Skocz do pozycji: 1.

Tytuł:

The Mechanical Properties and Wear Resistance of HVOF Sprayed WC-Co Coatings

Autorzy:

Özbek, Y.
Canikoğlu, N.
İpek, M.

Powiązania:

https://bibliotekanauki.pl/articles/1187418.pdf

Data publikacji:

2016-04

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

81.15.Rs

Opis:

In this work, the Woka 5810 powders (88% tungsten carbide-12% cobalt) were used to produce coating by high velocity oxy-fuel spraying. WC-Co is widely used as a tribological coating material providing a combination of high toughness, high hardness, and good strength. The treated samples were characterized by using optical micrograph, stereo microscope and scanning electron microscopy, X-ray diffractometry, and microhardness tests. Also the wear performance of the coatings was investigated. The results indicated that the coating shows slight higher microhardness and better abrasive wear resistance than the conventional counterpart. The friction coefficient of coating was low. The scanning electron microscopy and energy dispersive spectroscopy analyses were applied to worn surfaces.

Źródło:

Acta Physica Polonica A; 2016, 129, 4; 600-603
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 2.

Tytuł:

R.S. Peters’ comprehensive theory of moral education

Autorzy:

Stefaan, Cuypers,

Powiązania:

https://bibliotekanauki.pl/articles/891962.pdf

Data publikacji:

2014

Wydawca:

Uniwersytet Warszawski. Wydawnictwa Uniwersytetu Warszawskiego

Tematy:

R.S. Peters

Opis:

This article presents R.S. Peters’ theory of moral education embedded in his broad conception of morality. The author examines Peters’ views against the background of Kohlberg’s stage theory of moral development; hence, the positions of both thinkers are interwoven throughout the discussion. It addresses some central issues relevant to moral education such as, for example: cognitive and affective aspects of morality, and the acquisition of virtues. In the article the author argues that Peters’ account of moral development and moral education provides supplementation for the somewhat narrow theory developed by Kohlberg, thus establishing a broader framework relevant to moral education.

Źródło:

Kultura Pedagogiczna. Międzynarodowe Pismo Pedagogiczne; 2014, 01(1); 11-27
2391-9175
2450-1816

Pojawia się w:

Kultura Pedagogiczna. Międzynarodowe Pismo Pedagogiczne

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 3.

Tytuł:

The role of MGMT polymorphisms rs12917 and rs11016879 in head and neck cancer risk and prognosis

Autorzy:

Kiczmer, Paweł
Prawdzic Seńkowska, Alicja
Strzelczyk, Joanna
Szydło, Błażej
Biernacki, Krzysztof
Osadnik, Tadeusz
Krakowczyk, Łukasz
Ostrowska, Zofia

Powiązania:

https://bibliotekanauki.pl/articles/1038528.pdf

Data publikacji:

2018

Wydawca:

Polskie Towarzystwo Biochemiczne

Tematy:

MGMT
head and neck cancer
polymorphism
rs12917
rs11016879

Opis:

Head and neck squamous cell carcinoma (HNSCC) is one of the leading cancers by incidence worldwide. The risk of these cancers is strictly associated with alkylation factors present in tobacco smoke. The crucial role in preventing DNA alkylation is played by O6-methylguanine-DNA methyltransferase (MGMT). Dysfunction or lack of MGMT is associated with an increased risk of cancer. The aim of the study was to assess the influence of MGMT polymorphisms: rs12917 and rs11016879 on HNSCC risk and course. The study consisted of 69 HNSCC patients and 242 healthy individuals. Case samples were taken from resected tumour tissue. The control group comprised samples of epithelial cells collected from mucous membranes using swabs. DNA samples were genotyped by employing the 5' nuclease assay for allelic discrimination using TaqMan SNP Genotyping Assays. The significance between distributions of genotypes and alleles was tested using Pearson's χ2 test analysis. Our results indicated that the MGMT rs12917 TT genotype increases the risk of HNSCC. The MGMT rs11016879 AG genotype and A allele were associated with increased HNSCC risk. We noted higher risk of nodal metastasis in rs11016879 AA homozygotes. Mechanisms leading to MGMT enzymatic defect are unknown and hence further studies need to be carried out. Our data suggest that the examined polymorphisms may be considered as potential prognostic factors for HNSCC risk and outcome. Further studies are necessary to verify our results.

Źródło:

Acta Biochimica Polonica; 2018, 65, 1; 87-92
0001-527X

Pojawia się w:

Acta Biochimica Polonica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 4.

Tytuł:

The Surface Properties of WC-Co-Cr Based Coatings Deposited by High Velocity Oxygen Fuel Spraying

Autorzy:

Ozbek, Y.
Canikoğlu, N.
İpek, M.

Powiązania:

https://bibliotekanauki.pl/articles/1032535.pdf

Data publikacji:

2017-01

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

81.15.Rs

Opis:

The aim of this research was to investigate microstructural and mechanical properties of the WC-Co-Cr coatings by high velocity oxygen fuel spraying. Woka 3653 (WC10Co4Cr) powder was used as coating material. This powder is widely used as a tribological coating material providing a combination of high toughness, high hardness, and good strength. The coatings were produced for the different high velocity oxygen fuel spraying parameters. The treated samples were characterized by using scanning electron microscopy/energy dispersive X-ray spectrometry and X-ray diffractometry. Microhardness measurements were executed to evaluate the mechanical properties of the coatings. Also the wear performance of the coatings was investigated. The scanning electron microscopy and energy dispersive X-ray spectrometry analyses were applied to worn surfaces. The results indicated that the coating shows slightly higher microhardness and better abrasive wear resistance than the conventional counterpart.

Źródło:

Acta Physica Polonica A; 2017, 131, 1; 186-189
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 5.

Tytuł:

Changes in Microstructure of Air Plasma Sprayed M-CrAlY Coatings After Short Thermal Exposure in Argon Atmosphere

Autorzy:

Čelko, L.
Řičánková, V.
Klakurková, L.
Podrábský, T.
Dvořáček, E.
Švejcar, J.

Powiązania:

https://bibliotekanauki.pl/articles/1503728.pdf

Data publikacji:

2011-08

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

81.15.Rs

Opis:

Conventional air plasma spray technique and two powders, NiCrAlY and CoNiCrAlY, were used to produce the M-CrAlY type of coating on the Inconel 713LC substrate. Two phase coatings, consisting of Ni and/or Co solid solution and NiAl intermetallic phase, were produced. A certain amount of imperfectly melted powder particles, voids and aluminium oxide was also present. After air plasma spraying the coatings were annealed at widely ranging temperatures (650, 800, 1000 and 1150°C) for two hours in argon-flow atmosphere. It was found that the temperature significantly affects the microstructure of resulting coatings. The oxide scale was formed by internal oxidation in a coating region primarily at higher temperatures. In this case, aluminium was depleted from the NiAl phase within the coating region and the Ni, Co, Cr solid solutions and the aluminium oxide started to form rapidly. No interaction was observed after the short thermal exposure below the substrate surface. The microstructure of coatings was recorded by scanning electron microscope. Coating thickness, amount of voids and oxide scale were measured by means of image analysis. The concentration of phases was estimated by energy dispersive microanalysis.

Źródło:

Acta Physica Polonica A; 2011, 120, 2; 336-339
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 6.

Tytuł:

Thermomagnetic Behaviour and Microstructure of a Rapidly Quenched $Nd_{4.5}Fe_{77}B_{18.5}$ Alloy

Autorzy:

Talijan, N.
Ćosović, V.
Grujić, A.
Stajić-Trošić, J.
Žák, T.

Powiązania:

https://bibliotekanauki.pl/articles/1813871.pdf

Data publikacji:

2008-01

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

81.40.Rs

Opis:

Changes in the phase composition and crystallite size, as well as changes in the magnetic behaviour of $Nd_{4.5}Fe_{77}B_{18.5}$ alloy, caused by thermomagnetic measurements, was observed in regard of the optimal magnetic state of this alloy. In the optimized magnetic state, the formed nanocomposite consisted of $Fe_3B//Nd_2Fe_{14}B$ and partly of α-Fe with a mean crystallite size < 30 nm, as determined by X-ray diffraction and transmission electron microscopy. An increased amount of α-Fe, the presence of $Nd_2O_3$ and different Fe-B phases, as well as an increase in the mean crystallite size were observed after thermomagnetic measurements had caused a quality loss of the hard magnetic properties.

Źródło:

Acta Physica Polonica A; 2008, 113, 1; 525-528
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 7.

Tytuł:

Wybrane polimorfizmy genu VEGF w przewlekłej chorobie nerek
Selected polymorphisms of VEGF gene in chronic renal failure

Autorzy:

Żywiec, Joanna
Kiliś-Pstrusińska, Katarzyna
Grzeszczak, Władysław

Powiązania:

https://bibliotekanauki.pl/articles/1035569.pdf

Data publikacji:

2018

Wydawca:

Śląski Uniwersytet Medyczny w Katowicach

Tematy:

vegf-a
przewlekła choroba nerek
rs699947
rs1570360
chronic kidney disease

Opis:

INTRODUCTION: Understanding the complex etiopathogenesis of chronic kidney disease (CKD) raises hopes for the development of effective methods for its early diagnosis and effective prevention and treatment. The significance of genetic predisposition in renal damage development has been proven in many studies. The objective of our study was to estimate the connections between selected VEGF polymorphisms and the incidence of chronic renal failure. MATERIALS AND METHODS: 103 families, consisting of both parents and affected offspring with CKD stage below 3, i.e. eGFR below 60 ml/min/1.73 m2, participated our study. The mean age of the children was 15.2 years and mean eGFR 28.9 ml/min/1.73 m2. The main reason for renal damage was interstitial nephropathy (71%) and the second (29%) – chronic glomerulonephritis. 45% of patients were conservatively treated, while others remained on chronic renal replacement therapy. Venous blood samples were collected for DNA isolation. Selected VEGF polymorphisms were genotyped by the TaqMan method. The obtained results were analyzed on the basis of Statistica 10 and Microsoft Office Excel 2003 software using the transmission disequilibrium test (TDT), χ2 test and the Kaplan-Meier estimator. For all the calculations, a p value below 0.05 was adopted as the limit of statistical significance. RESULTS: No differences in the estimated and observed rs699947 or rs1570360 allele transmission between the parents and their affected offspring were found. CONCLUSIONS: No relations between rs699947 and rs1570360 VEGF polymorphisms and the incidence of chronic kidney disease of at least stage 3 were established.
WSTĘP: Poznanie złożonej etiopatogenezy przewlekłej choroby nerek (PChN) budzi nadzieje na rozwój skutecznych metod jej wczesnej diagnostyki oraz skutecznej profilaktyki i leczenia. Liczne badania dowodzą znaczenia predyspozycji genetycznej w rozwoju przewlekłego uszkodzenia nerek w przebiegu różnych chorób. Celem pracy była ocena związku wybranych polimorfizmów genu VEGF (vascular endothelial growth factor) z występowaniem przewlekłej choroby nerek. MATERIAŁ I METODY: Grupę badaną stanowiły 103 rodziny (trios): dwoje biologicznych rodziców i dziecko z PChN w stadium co najmniej trzecim, tj. z eGFR ≤ 60 ml/min/1,73 m2, na tle przewlekłego kłębuszkowego zapalenia nerek (29%) lub nefropatii śródmiąższowej (71%). W chwili badania średni wiek dzieci z PChN wynosił 15,2 roku, a średnia filtracja kłębuszkowa 28,9 ml/min/1,73 m2. U 45% chorych zastosowano leczenie zachowawcze, u pozostałych nerkozastępcze. U wszystkich badanych pobrano jednorazowo próbki krwi żylnej w celu wyizolowania materiału genetycznego i przeprowadzono genotypowanie wybranych polimorfizmów genu VEGF metodą TaqMan. Do opracowania statystycznego wyników posłużyły programy Statistica 10 i Microsoft Office Excel 2003 z wykorzystaniem testu nie-równowagi sprzężeń (transmission disequilibrium test – TDT), testu χ2 oraz estymatora Kaplana-Meiera. Za granicę istotności statystycznej przyjęto wartości p < 0,05. WYNIKI: Nie wykazano różnic w przekazywaniu alleli badanych polimorfizmów rs699947 i rs1570360 genu VEGF od rodziców do potomka z PChN. WNIOSKI: Nie stwierdzono związku polimorfizmów rs699947 i rs1570360 genu VEGF z występowaniem przewlek-łej choroby nerek w stadium ≥ 3.

Źródło:

Annales Academiae Medicae Silesiensis; 2018, 72; 267-272
1734-025X

Pojawia się w:

Annales Academiae Medicae Silesiensis

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 8.

Tytuł:

Simulator for the RS operator using visual depiction
Symulator dla operatora RS wykorzystujący zobrazowanie wizyjne

Autorzy:

Przybylski, M.
Hass, A.

Powiązania:

https://bibliotekanauki.pl/articles/223129.pdf

Data publikacji:

2017

Wydawca:

Akademia Marynarki Wojennej. Wydział Dowodzenia i Operacji Morskich

Tematy:

RS operator simulator
visual depiction
automatic tracking
symulator operatora RS
zobrazowanie wizyjne
automatyczne śledzenie

Opis:

The high operational cost of exploitation of armaments in near-battle conditions and numerous restrictions in use of the battle equipment in places of permanent deployment have contributed to seek new training methods. In recent years, there has been a rapid development of simulators used in the process of education and in-service training associated with the technological advancement and the modernization of the armed forces of the Republic of Poland. In this article, an experimental model of the simulator was introduced for the operator of manual tracking (RS) using a visual system. This model was built by the authors as part of their master’s thesis. It allows either manual or automatic tracking of targets against the simulated background and gives a grade to the operator based on the accuracy achieved while tracking the target. The solution suggested by the authors may raise the effectiveness of training of operators using television-optical systems, as well as reduce the associated operating costs of the weaponry.
Wysokie koszty eksploatacji uzbrojenia w warunkach zbliżonych do bojowych i liczne ograniczenia w użyciu sprzętu bojowego w miejscach stałej dyslokacji przyczyniły się do poszukiwania nowych metod szkolenia. W ostatnich latach nastąpił dynamiczny rozwój symulatorów wykorzystywanych w procesie kształcenia i doskonalenia zawodowego związany z postępem technologicznym oraz modernizacją Sił Zbrojnych RP. W artykule przedstawiono model doświadczalny symulatora dla operatora ręcznego śledzenia (RS) wykorzystujący system wizyjny. Model ten został zbudowany przez autorów w ramach ich prac magisterskich. Umożliwia on ręczne lub automatyczne śledzenie celów na pozorowanym tle oraz wystawienie oceny operatorowi na podstawie osiągniętej dokładności podczas śledzenia celu. Zaproponowane rozwiązanie może podnieść efektywność szkolenia operatorów korzystających z systemów telewizyjno-optycznych oraz obniżyć związane z tym koszty eksploatacji uzbrojenia.

Źródło:

Zeszyty Naukowe Akademii Marynarki Wojennej; 2017, R. 58 nr 3 (210), 3 (210); 87-95
0860-889X

Pojawia się w:

Zeszyty Naukowe Akademii Marynarki Wojennej

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 9.

Tytuł:

Performance comparison of cylindrical AS/RS with single and multi load handling devices
Cравнение работы автоматизированных цилиндрических систем складирования С-AS/RS с разными погрузочно-разгрузочными устройствами

Autorzy:

Janilionis, V.
Bazaras, Z.

Powiązania:

https://bibliotekanauki.pl/articles/374651.pdf

Data publikacji:

2013

Wydawca:

Politechnika Śląska. Wydawnictwo Politechniki Śląskiej

Tematy:

cylindrical AS/RS
automated warehouse
simulation
statistical analysis
cylindryczne AS/RS
symulacja
analiza statystyczna

Opis:

This paper proposes the concept of a new type of Cylindrical Automated Storage and Retrieval system (C-AS/RS), which consists of the octagonal shape rack, system input/output (I/O) positions, load storage and retrieval mechanism (SRM), which rotates and moves simultaneously and contains a number of load handling devices (LHDs). Physical structure of the single and multi-LHD systems, control algorithms and the performance measures were presented. Simulation modelling techniques, descriptive statistics and analysis of variance were used in this research to identify the effects of different location of I/O positions, the number of LHDs on the SRM and the retrieval request rates to the performance of the C-AS/RS system.
В данной работе описывается концепция aвтоматизированных цилиндрических систем складирования нового типа (англ. Cylindrical Automated Storage and Retrieval Systems - C-AS/RS), которая состоит из стеллажа восьмиугольной формы, системы локализации ввода / вывода (англ. input/output-I / O), механизма сбора и хранения груза (англ. Storage Retrieval Mechanism - SRM), который вращается и движется одновременно и содержит ряд погрузочно-разгрузочных устройств (англ. Load Handling Device - LHD). Также была представленф физическая структура моно и мульти-LHD системы, алгоритмы управления и показатели эффективности. В данном исследовании были использованы методы иммитационного моделирования, дискриптивной статистики и дисперсионного анализа для определения влияния различных I/O локализаций, количества LHDs на SRM и интенсивности потока выбора груза на производительность системы C-AS/RS.

Źródło:

Transport Problems; 2013, 8, 4; 93-102
1896-0596
2300-861X

Pojawia się w:

Transport Problems

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 10.

Tytuł:

Diagnostic information model of a military vehicle

Autorzy:

Rychlik, A.
Szczyglak, P.

Powiązania:

https://bibliotekanauki.pl/articles/244455.pdf

Data publikacji:

2011

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

transport
diagnostic
transmission system
RS-485

Opis:

This study presents a diagnostic concept, the cybernetic structure and the physical model of the Autonomic Logistics System, a diagnostic sub-system implemented in the Tarpan Honker military vehicle. The system supports the driver in the process of making decisions regarding the vehicle's condition and key operating parameters. The information model reporting on the status and faults of power transmission system components will not identify limit state values. Limit state values will be identified after the vehicle has been tested with an implemented diagnostic system. An RS-485 type communication and data transmission system with linear (serial) half-duplex technology was designed for the proposed monitoring and diagnostic system. The developed data transmission topology (number of transmitters and receivers) accounts for the vehicle's unique structure, operating requirements, system functionalities and structural feasibility. The proposed transmission system supports quick data transfer between modules (devices) monitoring selected systems and mechanisms. The system minimizes the number of sensors and signal cables through the multiple use of measuring sensor signals. The proposed system is an open structure which supports data transfer between control devices supplied by different manufacturers;

Źródło:

Journal of KONES; 2011, 18, 1; 509-514
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 11.

Tytuł:

Study of the Hydrogen-Metal Systems

Autorzy:

Nikitenkov, N.
Hashhash, A.
Sigfusson, T.
Kudryavtzeva, E.
Sypchenko, V.
Tyurin, Yu.
Chernov, I.

Powiązania:

https://bibliotekanauki.pl/articles/1490775.pdf

Data publikacji:

2012-01

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

68.43.Nr
68.43.Rs

Opis:

Hydrogen accumulation in samples of a palladium and 12Kh18N10T steel at the hydrogen charging by the electrolytic method and hydrogen release from these samples at its electron and X-ray irradiation are studied. Palladium was used as a comparison material (as most efficiently solvent hydrogen known among the simple materials). It is established that a capture effectiveness of hydrogen from an electrolyte (1 M $H_2SO_4$ at current density is 0.5 A $cm^{-2}$) for palladium is 3-4 orders more than for steel. The hydrogen yield nonlinearly increases with growing of electron current density and electron energy is more than 40 keV under electron irradiation of saturated palladium and 12Kh18N10T steel samples. About 90% of the hydrogen had removed from hydrogen saturated palladium samples and only 60% from steel under electron beam with energy 40 keV and current density ≈ 20 μA $cm^{-2}$ for 1 h of irradiation. It is necessary to increase the energy of electrons from 40 to 100 keV for the more effective removal of hydrogen.

Źródło:

Acta Physica Polonica A; 2012, 121, 1; 78-81
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 12.

Tytuł:

Speed of Ultrasound and Internal Pressure of Propanediol and Butanediol Isomers under Elevated Pressures

Autorzy:

Zorębski, E.
Piotrowska, M.
Dzida, M.

Powiązania:

https://bibliotekanauki.pl/articles/1811570.pdf

Data publikacji:

2008-12

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

82.30.Rs
62.50.-p

Opis:

Speed of ultrasound and internal pressure of 1,2-propanediol, 1,3-propanediol, 1,2-butanediol, and 1,3-butanediol at the temperatures ranging from 293.15 to 318.15 K and pressures up to 101 MPa are analyzed and discussed in terms of molecular structure and ability to form inter- and intramolecular hydrogen bonds.

Źródło:

Acta Physica Polonica A; 2008, 114, 6A; A-265-A-270
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 13.

Tytuł:

AFM Force Spectroscopy and Steered Molecular Dynamics Simulation of Protein Contactin 4

Autorzy:

Strzelecki, J.

Powiązania:

https://bibliotekanauki.pl/articles/1807636.pdf

Data publikacji:

2009-12

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

82.37.Rs
87.10.Tf

Opis:

We use a single molecule atomic force spectroscopy combined with the steered molecular dynamics simulation to determine a mechanical behavior of neural cell adhesion protein contactin during its unfolding. Force curves typical for modular proteins were observed, showing at most four unfolding peaks. The analysis of force spectra performed within worm-like chain model of polymer elasticity showed the presence of three unfolding lengths. Small plateaus, most likely resulting from forced transitions within domains were observed for the first time. Steered molecular dynamics simulations help to determine atomistic picture of domain unfolding.

Źródło:

Acta Physica Polonica A; 2009, 116, S; S-156-S-159
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 14.

Tytuł:

Influence of High Power Laser Beam on Physical Properties of Epitaxial Films of Hg$\text{}_{1-x}$Cd$\text{}_{x}$Te (x≈0.2)

Autorzy:

Kuźma, M.
Abeynayake, C.
Sheregii, E.
Virt, I.

Powiązania:

https://bibliotekanauki.pl/articles/1891472.pdf

Data publikacji:

1991-09

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

73.60.Cs
81.40.Rs

Opis:

Models have been proposed explaining differences in electrophysical and photoelectrical properties of epitaxial films of Hg$\text{}_{1-x}$Cd$\text{}_{x}$Te (x≈0.2) before and after treating by single pulses of Nd:YAG laser. These models were obtained on the basis of the calculated distributions of temperature, temperature gradient and concentration of interstitial mercury during and after exposing to the laser pulse. These calculations were done using the net method.

Źródło:

Acta Physica Polonica A; 1991, 80, 3; 475-479
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 15.

Tytuł:

Force Spectroscopy of Polyclonal and Monoclonal Anti-Bovine Serum Albumin Antibodies - BSA Complexes

Autorzy:

Chtcheglova, L. A.
Dietler, G.

Powiązania:

https://bibliotekanauki.pl/articles/2036898.pdf

Data publikacji:

2003

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

82.37.Gk
82.37.Rs

Opis:

The specific interactions between bovine serum albumin and poly- or two monoclonal bovine serum albumin antibodies were studied using force spectroscopy mode of atomic force microscopy. The histograms of the unbinding forces for polyclonal bovine serum albumin antibodies are broad at high antibody concentrations (50 or 270 μg/ml) and narrow at low concentrations (10 or 27 μg/ml), while the histograms for monoclonal antibodies peak at well defined unbinding force. The peak unbinding force depends on the type of antibody and the antibody concentration. In this paper we described and characterized the passive adsorption and covalent immobilization of proteins for tip and sample preparation. Force spectroscopy could serve as a useful method for characterization of antigen-antibody interactions for measuring the specificity of an antibody or to assess the purity of a monoclonal antibody solution and to distinguish between different antibodies.

Źródło:

Acta Physica Polonica A; 2003, 104, 3-4; 321-326
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 16.

Tytuł:

Investigation of two-stage magnetic Barkhausen noise measurement method at power line frequency

Autorzy:

Pal'a, J.
Šoka, M.

Powiązania:

https://bibliotekanauki.pl/articles/1070541.pdf

Data publikacji:

2016-03

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

81.40.Rs
75.60.Ej

Opis:

The aim of the paper was to study the features of measurement of the magnetic Barkhausen noise by the new two-stage method in the high excitation frequency region (power line frequency). The magnetic Barkhausen noise was investigated on grain oriented Fe-3%Si steel subjected to different heat treatment. By application of an air coil on the output of the power amplifier we were able to linearize the excitation field. At the same time, the air coil suppressed the unwanted noise from the output of the power amplifier. We have found that the two-stage method is able to reveal a peak of the power spectrum even if it is located at low frequency, in contrast to the classical one-stage method. Further, we successfully applied a model of the power spectrum to the real magnetic Barkhausen noise obtained from the two-stage measurement.

Źródło:

Acta Physica Polonica A; 2016, 129, 3; 383-387
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 17.

Tytuł:

Cavitation Damage Behavior in Seawater for Al-Mg Alloy Arc Thermal Spray Coating with Mg Content

Autorzy:

Park, I.
Kim, S.

Powiązania:

https://bibliotekanauki.pl/articles/1186994.pdf

Data publikacji:

2016-04

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

52.77.Fv
81.15.Rs

Opis:

Al arc thermal spray coating materials are widely used to prevent the corrosion of steel structure materials in marine environment. To improve the durability of the Al alloy thermal spray coating layer, Al-Mg alloy arc thermal spray coating was performed with different Mg contents. Furthermore, the cavitation experiment was performed in natural seawater to evaluate the durability of the thermal spray coating layer, and the damaged surface was analyzed with a scanning electron microscope and a 3D microscope. As a result, the durability of the Al-Mg alloy thermal spray coating layer improved by the addition of Mg, and the Al-3%Mg thermal spray coating layer presented the best characteristics.

Źródło:

Acta Physica Polonica A; 2016, 129, 4; 572-577
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 18.

Tytuł:

Surface morphology, structural and optical properties of MgO films obtained by spray pyrolysis technique

Autorzy:

Diachenko, O.
Opanasuyk, A.
Kurbatov, D.
Opanasuyk, N.
Kononov, O.
Nam, D.
Cheong, H.

Powiązania:

https://bibliotekanauki.pl/articles/1157920.pdf

Data publikacji:

2016-09

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

81.05.Dz
81.15.Rs

Opis:

X-ray diffraction, atomic force microscopy, field emission scanning electron microscopy, UV-visible photometry, and photoluminescence measurements were used to investigate the surface morphology and structural and optical properties of MgO films. Magnesium oxide films deposited by the spray pyrolysis technique were studied. The substrate temperature was varied from T_{s} = 643 K to 693 K. Magnesium chloride hexahydrate (MgCl₂·6H₂O), dissolved in deionized water, was used as the precursor solution. It was established that the single phase films crystallize into a cubic structure with very fine crystallite size (about 2 nm). The optical band gaps of the samples were varied from 3.64 eV to 3.70 eV. Also, the films have a high level of transmittance of 90%. Photoluminescence spectra show the emission peaks at approximately 412 nm (3.00 eV) and 524 nm (2.38 eV). The peak with the energy of 3.00 eV is ascribed to holes trapped in magnesium ion vacancies acting as acceptors (F⁺ center). The broad emission peak at 524 nm is related to the presence of defects (F¯ centers) associated with oxygen ion vacancies.

Źródło:

Acta Physica Polonica A; 2016, 130, 3; 805-810
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 19.

Tytuł:

Adaptive Testing of Ferromagnetic Materials Utilizing Barkhausen Noise

Autorzy:

Pal'a, J.
Bydžovský, J.

Powiązania:

https://bibliotekanauki.pl/articles/1205257.pdf

Data publikacji:

2014-08

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

81.40.Rs
75.60.Ej

Opis:

A new method of the Barkhausen noise measurement and optimization of the measured data processing with respect to non-destructive evaluation of ferromagnetic materials is proposed. The measuring method is based on well-known method of magnetic adaptive testing where a complex set of minor hysteresis loops is measured. Collecting the sets of obtained Barkhausen noise envelopes into suitable designed matrices and optimizing the data processing with respect to the maximum sensitivity to the evaluated variable were developed. The method is illustrated on the evaluation of plastic deformation of a steel sample. It is shown that the proposed measuring method and measured data processing bring an improvement of the sensitivity to the evaluated variable when comparing with measuring the traditional Barkhausen noise parameter (root mean square).

Źródło:

Acta Physica Polonica A; 2014, 126, 3; 855-859
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 20.

Tytuł:

Effect of Post Growth Annealing on the Structural and Electrical Properties of ZnO/CuO Composite Nanostructures

Autorzy:

Hussain, Mushtaque
Khan, Azam
Nur, Omer
Willander, Magnus

Powiązania:

https://bibliotekanauki.pl/articles/1205261.pdf

Data publikacji:

2014-08

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

81.40.Rs
81.40.-z

Opis:

In the present work, ZnO/CuO composite nanostructures have been grown on fluorine doped tin oxide coated glass substrate by aqueous chemical growth method. To observe the effect of post growth annealing (500°C, 1 min) on the structural properties of ZnO nanorods scanning electron microscope and X-ray diffraction techniques have been utilized. SEM images of post growth annealed (post growth annealed) sample reveal that the average diameter of ZnO NRs has considerably increased in comparison with as grown sample. Moreover after post growth annealing the ZnO NRs showed more clearly hexagonal wurtzite structure. Beside this the NRs are also uniform and well aligned with a high aspect ratio of $~10$. In XRD pattern the strongly intense (002) peak of the post growth annealing sample suggest that the crystal quality of the NRs have also been improved significantly. Since the structural improvement have a significant impact on charge transport properties as well, therefore the effect of post growth annealed has also been investigated by the electrical characterization of ZnO/CuO based heterojunction. The current-voltage measurements of the post growth annealed sample showed improvement in the current in comparison with as grown sample. The impedance study has also confirmed that the post growth annealed has influence on the electrical properties. The presented post growth annealed heterojunction of ZnO/CuO may have space in applications like sensors and oxide based diodes in the devices fabrication.

Źródło:

Acta Physica Polonica A; 2014, 126, 3; 849-854
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 21.

Tytuł:

Analysis of the Responses of Metal-Oxide Semiconductor Nanostructures to Nitrogen Dioxide

Autorzy:

Procek, M.
Pustelny, T.

Powiązania:

https://bibliotekanauki.pl/articles/1399393.pdf

Data publikacji:

2013-09

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

82.47.Rs
07.07.Df

Opis:

The paper concerns analyses of the nanostructures based on metal-oxide semiconductors, such as titanium dioxide $(TiO_2)$ and zinc oxide $(ZnO)$ exposed to nitrogen dioxide $(NO_2)$ in an atmosphere of dry and humid synthetic air. The investigations were performed at a rather low temperature amounting to 120°C. The responses of sensors differing in the morphology of their structures have been compared. Also the time of their responses were compared with each other. The paper describes theoretically changes in the effective resistance of these structures due to the interaction of the gas. The presented results are being discussed based on the analysis of physical and chemical phenomena.

Źródło:

Acta Physica Polonica A; 2013, 124, 3; 529-533
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 22.

Tytuł:

Effect of Bondcoat Thickness on High Temperature Hot Corrosion of ZrO₂-8Y₂O₃ Thermal Barrier Coating

Autorzy:

Qureshi, I.
Shahid, M.
Khan, A.

Powiązania:

https://bibliotekanauki.pl/articles/1402361.pdf

Data publikacji:

2015-08

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

81.65.Mq
81.15.Rs

Opis:

Thermal barrier coatings (TBCs) are widely used for industrial and aero turbines. The use of residual fuel oil is well known due to economic reasons, which causes hot corrosion. Hot corrosion over extended exposures reduces durability. Therefore, there is a requirement to develop new design approaches for TBCs in order to operate under hot corrosion environment. In this paper, the effect of bond coat thickness on the hot corrosion resistance was studied. Hot corrosion test were carried out in 50 wt.% Na₂So₄+50 wt.% V₂O₅ molten salt at 950°C for 50 hours. The characterizations of the coatings included X-ray diffraction analysis, scanning electron microscopy and optical microscope. Results indicated that TBCs with thick bond coat exhibited superior hot corrosion resistance to the TBCs with conventional bond coat.

Źródło:

Acta Physica Polonica A; 2015, 128, 2B; B-314-B-316
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 23.

Tytuł:

Dependence of Barkhausen Noise in Plastically Deformed Steel on Frequency and Nonlinearity of Magnetizing Field

Autorzy:

Pala, J.
Bydžovský, J.

Powiązania:

https://bibliotekanauki.pl/articles/1813511.pdf

Data publikacji:

2008-01

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

81.40.Rs
75.60.Ej

Opis:

The Barkhausen noise was measured in plastically deformed low-carbon steel at various frequencies of the magnetizing field. Strip samples magnetized by a yoke were used for investigation. The measured amplitude distributions and power spectra are compared with the results of the Alessandro, Beatrice, Bertotti, Montorsi model of the Barkhausen noise. The measurement results at the triangular magnetizing current and the triangular magnetic field in the sample were compared and the differences will be discussed.

Źródło:

Acta Physica Polonica A; 2008, 113, 1; 23-26
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 24.

Tytuł:

Optimizing Technology Selection in Maritime Logistics

Autorzy:

Sahin, B.
Senol, Y. E.
Bulut, E.
Duru, O.

Powiązania:

https://bibliotekanauki.pl/articles/409136.pdf

Data publikacji:

2015

Wydawca:

Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej

Tematy:

technology management
shipping logistics company
RS-FAHP

Opis:

In this study, we consider a technology selection problem in maritime logistics based on lifespan, brand value, maintenance, repair, operations and cost. Low cost, acceptable risk, and environment friendly form of transportation are primarily required for the logistics sector. In a conventional holistic approach, technology is firstly selected in terms of its cost. However, in the step-wise manner, it is obvious that other factors (i.e. reliability, sustainability, etc.) directly involve in to the selection process. By using conventional AHP method, we investigate the general tendency of the ship owners and its reflections to the maritime logistics.

Źródło:

Research in Logistics & Production; 2015, 5, 3; 299-309
2083-4942
2083-4950

Pojawia się w:

Research in Logistics & Production

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 25.

Tytuł:

Polimorfizm rs9930506 genu FTO a zawartość tkanki tłuszczowej w organizmie u osób zgłaszających się do poradni ogólnej podstawowej opieki zdrowotnej
Polymorphism rs9930506 of FTO gene but fat content in the body of patients who were admitted to the outpatient clinic

Autorzy:

Woźny, Łukasz
Wojtas, Elżbieta
Chuchmacz, Grzegorz
Gola, Mateusz
Grzeszczak, Władysław

Powiązania:

https://bibliotekanauki.pl/articles/1037690.pdf

Data publikacji:

2015

Wydawca:

Śląski Uniwersytet Medyczny w Katowicach

Tematy:

otyłość
nadwaga
fto
rs9930506
overweight
obesity

Opis:

AIM: The objective of the study was to assess the potential connection between rs 9930506 within the FTO gene and the incidence of obesity and being overweight in a population of people who were admitted to an outpatient clinic. MATERIAL AND METHODS: We cumulatively investigated 464 consecutive patients from southern Poland who were admitted to the local outpatient clinic. They were divided into 3 groups (normal, overweight, obese). Genotyping of polymorphism rs 9930506 was performed by using fluorescent marked probes which had been previously prepaired to detect a single nucleotide polymorphism – TaqMan Pre-designed SNP Genotyping Assay (Applied Biosystems). RESULTS: In our group the prevalence of being overweight and obese was 72.3%, whence 23.9% constitutes people who were overweight and 48.4% those suffering from obesity. Patients being overweight and obese have a significant-ly higher blood glucose level than those from the normal group (p < 0.001). The levels of serum insulin in the obese subjects was significantly higher than in the other groups (overweight: p < 0.05, normal: p < 0.001) as well as the levels of overweight people compared to those of a proper weight (p < 0.01). Diabetes was reported in about 13% obese subjects, whereas for people with normative weight was it 2.13%. Subjects being overweight and obese have a significantly higher blood pressure level, higher cholesterol and triglyceride levels and lower eGFR. Our study did not shown any vital correlation between our FTO polymorphism and the prevalence of being overweight or obese. Moreover no significant relationship between rs9930506 FTO and waistline or BMI was found. Finally we proved that the studied polymorphism is connected with the content of adipose tissue in the human body. CONCLUSIONS: Being overweight and obese are connected with many metabolic disorders including carbohydrate and lipid metabolism. We did not find any correlation between rs9930506 and the prevalence of being overweight or obese. Polymorphism rs9930506 was found to be associated with the content of adipose tissue in the human body.
CEL PRACY: Celem niniejszej pracy była ocena potencjalnego związku między polimorfizmem rs9930506 genu FTO a występowaniem nadwagi i otyłości w populacji osób zgłaszających się do poradni ogólnej podstawowej opieki zdrowotnej (POZ). MATERIAŁ I METODY: Badaniem objęto 464 kolejnych pacjentów z rejonu Polski Południowej, którzy zgłaszali się do poradni ogólnej POZ. Badanych podzielono na 3 grupy, zależnie od występowania nadwagi, otyłości lub ich braku (grupa kontrolna, grupa z otyłością, grupa z nadwagą). Genotypowanie polimorfizmu FTO rs 9930506 prowadzono z wykorzystaniem znakowanych fluorescencyjnie sond, używając gotowych zestawów do oznaczania polimorfizmu pojedynczego nukleotydu – TaqMan Pre-designed SNP Genotyping Assay (Applied Biosystems). WYNIKI: Wśród kolejno zgłaszających się osób do poradni ogólnej POZ częstość występowania nadwagi i otyłości wynosiła 72,3% (nadwaga – 23,9%, otyłość brzuszna – 48,4%). W surowicy osób z nadwagą i otyłych stwierdzono istotnie statystycznie wyższe stężenia glukozy w stosunku do osób z grupy kontrolnej (p < 0,001). Poziomy insuliny w surowicy były u osób otyłych znamiennie wyższe niż u osób z nadwagą (p < 0,05) i zdrowych (p < 0,001), zaś u osób z nadwagą znamiennie wyższe niż u osób bez nadwagi (p < 0,01). Cukrzycę stwierdzono u blisko 13% osób otyłych, a tylko u 2,13% osób bez nadwagi i otyłości. U osób z nadwagą i otyłością stwierdzono istotnie wyższe wartości ciśnienia tętniczego, stężenia cholesterolu i triglicerydów oraz obniżone eGFR. Nasze badania nie wykazały znamiennej zależności między badanym polimorfizmem a częstością występowania nadwagi lub otyłości brzusznej. Nie stwierdzono również znamiennej zależności między rs9930506 a obwodem pasa czy BMI. W badaniu wykazano natomiast znamienną statystycznie zależność między zawartością tkanki tłuszczowej w ustroju a badanym polimorfizmem rs9930506 genu FTO. WNIOSKI: 1. Nadwaga i otyłość są związane z wieloma metabolicznymi zaburzeniami dotyczącymi zarówno gospodarki węglowodanowej, jak i lipidowej. 2. Polimorfizm rs9930506 nie wykazał znamiennej zależności z występowa-niem nadwagi i otyłości. 3. Polimorfizm rs9930506 wykazuje istotną statystycznie zależność z zawartością trzewnej tkanki tłuszczowej w organizmie.

Źródło:

Annales Academiae Medicae Silesiensis; 2015, 69; 60-66
1734-025X

Pojawia się w:

Annales Academiae Medicae Silesiensis

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 26.

Tytuł:

Czwarty wymiar. Poezja R.S. Thomasa wobec pytania o (nie)obecność

Autorzy:

Soćko, Joanna

Powiązania:

https://bibliotekanauki.pl/articles/639012.pdf

Data publikacji:

2015

Wydawca:

Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego

Tematy:

R.S. Thomas, nieobecność, odczarowanie, czas, medytacja

Opis:

The Fourth Dimension. R.S. Thomas’s Poetry and the Question of God’s AbsenceThe text deals with the poetry of R.S. Thomas (1913−2000) – a British author and an Anglican priest in the Church of Wales – whose works are full of controversial (given his priesthood) statements concerning the absence of God. As a lot of Thomas’s poems convey thoughts intersecting with post-secular reflection on the death of God, rooted in Derrida’s questioning of the “metaphysics of presence,” the article aims at tracing the inspirations behind Thomas’s quasi-religious poetry. The point of departure for this reflection is the poet’s recollection of being left by his parents alone for the first time. The impression of an empty house turns out to be an experience which shaped the poet’s attitude towards the disenchanted space he lives in. Although most critics claim that the apparent absence of God in Thomas’s poetry results directly from the tradition of theological via negativa, the author of the article pays attention to those characteristics which differentiate Thomas’s spirituality from the theological tradition and the most important difference between the poet’s attitude and the traditional model of Christian contemplation turns out to be time, or, more precisely, the temporal discrepancy between the possible accessibility of the transcendent being and the man’s ability to “catch it at work.”

Źródło:

Wielogłos; 2015, 2(24)
2084-395X

Pojawia się w:

Wielogłos

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 27.

Tytuł:

Rs401681 and rs402710 polymorphisms of CLPTM1L gene in cancerous and healthy lung tissues in patients with lung adenocarcinoma
Polimorfizmy rs401681 i rs402710 genu CLPTM1L w tkance zmienionej nowotworowo i w tkance zdrowej płuc u chorych z gruczolakorakiem płuca

Autorzy:

Żywiec, Joanna
Rydel, Mateusz
Drozdzowska, Bogna
Klimczyk, Katarzyna
Kasperczyk, Janusz
Czyżewski, Damian

Powiązania:

https://bibliotekanauki.pl/articles/12696116.pdf

Data publikacji:

2023-09-22

Wydawca:

Śląski Uniwersytet Medyczny w Katowicach

Tematy:

lung adenocarcinoma
CLPTM1L gene
rs401681
rs402710
survival analysis
gruczolakorak płuca
gen CLPTM1L
analiza przeżycia

Opis:

INTRODUCTION: The search for factors influencing the survival of patients with lung cancer is still ongoing. It may potentially be a polymorphism of the cleft lip and palate transmembrane 1-like (CLPTM1L) gene, which is involved in the process of carcinogenesis. The aim of the study was to assess the distribution of genotypes and alleles of selected polymorphisms of the CLPTM1L gene – rs401681 and rs402710 – in cancerous and healthy lung tissue in patients with lung adenocarcinoma and their relationship with patient survival. MATERIAL AND METHODS: The study included 133 patients with an average age of lung cancer diagnosis of 65 years, who had undergone lung adenocarcinoma surgery in the past. Genetic material – deoxyribonucleic acid (DNA) – was isolated from paraffin-protected specimens of cancerous and healthy lung tissue, and genotyping of CLPTM1L polymorphisms was performed. The obtained results were analyzed along with demographic data, history of smoking, family history of cancer, stage of the disease in the tumor, node, metastasis (TNM) classification, clinical stage of the cancer and the survival time of the patients. RESULTS: The mean follow-up period was 44.5 months. The patients who died lived an average of 22.6 months from the time of cancer diagnosis. There were no significant differences between the distribution of genotypes or alleles in the cancerous and healthy tissues and their relationship with the survival of the patients. The age at the time of diagnosis of cancer, category N in the TNM classification and high clinical advancement of the cancer were the only factors influencing the survival of the patients. CONCLUSIONS: No relationships between the polymorphic variability of rs401681 and rs402710 in cancerous and healthy lung tissue and the survival of patients were found.
WSTĘP: Poszukiwanie czynników wpływających na przeżycie chorych z nowotworami płuc jest stale aktualne. Takim potencjalnym czynnikiem jest polimorfizm genu CLPTM1L (cleft lip and palate transmembrane 1-like), włączony w proces karcynogenezy. Celem pracy była ocena rozkładu genotypów i alleli wybranych polimorfizmów genu CLPTM1L – rs401681 i rs402710 – w tkance zmienionej nowotworowo i w tkance zdrowej płuc u chorych z gruczolakorakiem płuca oraz ich związku z przeżyciem chorych. MATERIAŁ I METODY: Badaniami objęto 133 chorych w wieku ujawnienia nowotworu płuca wynoszącym średnio 65 lat, u których w przeszłości dokonano usunięcia gruczolakoraka płuc. Z zabezpieczonych w parafinie próbek tkanki zdrowej płuc i z tkanki zmienionej chorobowo wyizolowano materiał genetyczny – kwas deoksyrybonukleinowy (DNA) – oraz przeprowadzono genotypowanie polimorfizmów CLPTM1L. Uzyskane wyniki poddano analizie wraz z danymi demograficznymi, wywiadem dotyczącym palenia tytoniu, wywiadem rodzinnym obciążonym nowotworowo, stadium choroby w klasyfikacji TNM (tumor, node, metastasis), zaawansowaniem klinicznym nowotworu i czasem przeżycia chorych. WYNIKI: Średni czas obserwacji wynosił 44,5 miesiąca. Chorzy, którzy zmarli, żyli średnio 22,6 miesiąca od czasu postawienia diagnozy nowotworu. Nie stwierdzono znamiennych różnic pomiędzy rozkładem genotypów ani alleli w tkankach chorej i zdrowej płuc oraz ich związku z przeżyciem chorych. Czynnikami wpływającymi na przeżycie chorych były wiek w czasie postawienia diagnozy nowotworu, kategoria N w klasyfikacji TNM oraz wysokie zaawansowanie kliniczne nowotworu. WNIOSKI: Nie stwierdzono związku pomiędzy zmiennością polimorficzną rs401681 i rs402710 w tkance chorej i zdrowej płuc a przeżyciem chorych.

Źródło:

Annales Academiae Medicae Silesiensis; 2023, 77, 1; 166-175
1734-025X

Pojawia się w:

Annales Academiae Medicae Silesiensis

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 28.

Tytuł:

Association Analysis of GDF5 and Contributing Factors in Developmental Dysplasia of the Hip in Infants

Autorzy:

Harsanyi, Stefan
Zamborsky, Radoslav
Krajciova, Lubica
Bohmer, Daniel
Kokavec, Milan
Danisovic, Lubos

Powiązania:

https://bibliotekanauki.pl/articles/28409369.pdf

Data publikacji:

2021-10-25

Wydawca:

Fundacja Edukacji Medycznej, Promocji Zdrowia, Sztuki i Kultury Ars Medica

Tematy:

DDH
hip joint
genotyping
GDF5
rs143383

Opis:

Background. Developmental dysplasia of the hip (DDH) is a developmental disorder which is reported to be associated with hip instability. When untreated, it can lead to irreversible joint damage. DDH is known to be a multifactorial disease involving genetic, mechanical and environmental factors. The greatest causative potential is attributed to the genetic component. Growth Differentiation Factor 5 (GDF5) is among the most studied genes associated with processes of regeneration and maintenance of joints. The aim of this work was to analyse the association of SNP rs143383 in the GDF5 gene and the occurrence of DDH, along with association with various contributing factors in the Caucasian population. Material and methods. A total of 118 samples were analysed for the presence of the mutation. DNA was isolated from all individuals from peripheral blood. SNP rs143383 in the GDF5 gene was genotyped using the TaqMan assay. A standard chi-square test was used to compare allele and genotype distributions in patients and healthy controls. Results. The association analysis of genotypes of DDH and rs143383 revealed a significant association. Also, the association of GDF5 and selected contributing factors was statistically significant in female gender (p=0.002), family history (p<0.001), count of pregnancy (p=0.009), laterality of hip involvement and initial US examination. Conclusions. 1. The results indicate an important effect of rs143383 polymorphism in the GDF5 gene on DDH development. 2. However, our results also suggest that rs143383 is not the only contributing factor in the genetic component of DDH.

Źródło:

Ortopedia Traumatologia Rehabilitacja; 2021, 23(5); 335-339
1509-3492
2084-4336

Pojawia się w:

Ortopedia Traumatologia Rehabilitacja

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 29.

Tytuł:

Application of geomatic tools for the diachronic monitoring of landscape metrics in the northeastern algerian highlands, case of the city of Setif

Autorzy:

Kraria, Hocine
Zighmi, Karim
Chibani, Abdelmouhcene

Powiązania:

https://bibliotekanauki.pl/articles/2201671.pdf

Data publikacji:

2022

Wydawca:

Uniwersytet Rolniczy im. Hugona Kołłątaja w Krakowie

Tematy:

LAUP
GIS
RS
PCA
Sentinel 2A
Landsat

Opis:

Geomatic tools could be used efficiently for urban development planning. The problem of the study lies in the extensive land use of terrains that are now suitable for heavy construction which slows down the development of new facilities. Furthermore, the authorities are forced to plan future settlements around Setif, at a distance of 8 to 12 kilometers from the city limits, threatening the long-term viability of construction and the ring of farmland that connects them to the core city. This must be done during the planning stage based on a diachronic analysis of all the natural and physical factors/parameters. The main objective of this research is to explore the application of landscape metrics to the analysis and monitoring of urban growth in the city of Setif, north-east of Algeria. For this purpose, our research paper uses Geographic Information System (GIS) and Remote Sensing (RS) techniques based on Principal Component Analysis (PCA) and the Angle Mapper Algorithm (SAM) target method for the analysis of urban land planning and sustainable urban planning of Setif. In the result of these analyses we propose suitability/buildability maps with more suitable construction sites. The research method is based on a 17-year time series dataset compiled from the Sentinel 2A and Landsat imagery between 2004 and 2021. Additionally, we used a cadastral Vs geotechnical overlay to estimate soil capacity. This work proves again that the integration of RS and GIS techniques allows for scientific identification of the lands suitable for urban development (LAUP).

Źródło:

Geomatics, Landmanagement and Landscape; 2022, 4; 67--79
2300-1496

Pojawia się w:

Geomatics, Landmanagement and Landscape

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 30.

Tytuł:

Preparation of nanocomposite magnetic compounds based on layered semiconductors by means of electrochemical intercalation in a gradient magnetic field

Autorzy:

Boledzyuk, V.
Bakhtinov, A.
Kovalyuk, Z.
Kudrynskyi, Z.
Ivanov, V.
Slyn'ko, V.

Powiązania:

https://bibliotekanauki.pl/articles/1159217.pdf

Data publikacji:

2016-09

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

71.20.Tx
81.05.Hd
81.40.Rs

Opis:

In this paper we propose a method of intercalation of layered single crystals with atoms of 3d-metals in a magnetic-field gradient. We report on structure properties of Co_{x}InSe and Co_{x}In₂Se₃ layered crystals intercalated by cobalt. It was established that ferromagnetic ordering at room temperature is observed in the intercalated crystals. The crystals are a nanocomposite material that consists of a layered matrix and arrays of Co nanoformations on the van der Waals surfaces of InSe and In₂Se₃ layers.

Źródło:

Acta Physica Polonica A; 2016, 130, 3; 773-777
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 31.

Tytuł:

Effects of Microstructural Transformation in TBCs Consisting of NiCrAlY Metallic Bond Coat and YSZ Ceramic Top Coat after Oxidation at 900°C

Autorzy:

Parlakyigit, A.
Karaoglanli, A.

Powiązania:

https://bibliotekanauki.pl/articles/1194952.pdf

Data publikacji:

2014-02

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

68.35.Fx
68.37.Hk
81.15.Rs

Opis:

Thermal barrier coatings are applied to aeronautical and industrial gas turbine components to protect from detrimental effects of hot gases. Thermal barrier coating systems are generally composed of a substrate material, an oxidation resistant metallic bond coat, and a thermal protective ceramic-based topcoat. Additionally, thermally grown oxide layer is formed at ceramic/bond coat interface as a result of exposure of bond coat to high temperature. Oxidation mechanism is one of the major failure mechanisms of thermal barrier coatings. Thermally grown oxide layer plays significant role as a oxygen barrier, but rapid thickening of thermally grown oxide leads to spallation failure of thermal barrier coatings. In this study, thermally grown oxide growth behavior was investigated at isothermal oxidation condition to evaluate durability of the thermal barrier coating system. The thermal barrier coating system consists of yttria stabilized zirconia (YSZ) topcoat and NiCrAlY bond coat deposited on Inconel 718 superalloy with atmospheric plasma spray technique. After coating process, specimens were exposed to 900C air atmosphere for different periods up to 50 h. Ceramic/bond coat interface and thermally grown oxide layer were examined using scanning electron microscopy analysis. Besides, porosity contents and microhardness measurements were carried out to determine strength of coating. The results showed that thickness of thermally grown oxide layer increased and porosity rates of ceramic layer decreased with the effect of oxidation. Accordingly, the ceramic layer hardness increased due to high temperature effect.

Źródło:

Acta Physica Polonica A; 2014, 125, 2; 232-234
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 32.

Tytuł:

The Influence of Humidity on the Resistance Structures with Graphene Sensor Layer

Autorzy:

Pustelny, T.
Setkiewicz, M.
Drewniak, S.
Maciak, E.
Stolarczyk, A.
Procek, M.
Urbańczyk, M.
Gut, K.
Opilski, Z.
Pasternak, I.
Strupinski, W.

Powiązania:

https://bibliotekanauki.pl/articles/1418032.pdf

Data publikacji:

2012-11

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

07.07.Df
42.81.Pa
82.47.Rs

Opis:

In the paper the results of investigations are presented concerning the influence of humidity of air on the resistance of a gas sensor structure with a graphene layer. The affects of nitrogen dioxide and humidity action on graphene were studied. We indicated that humidity might play an important role in determining the gas sensing properties of the graphene layer. In the paper it has been shown that in the case of a nitrogen oxide sensor, the reaction of $NO_2$ with water vapour can generate permanent defects in graphene.

Źródło:

Acta Physica Polonica A; 2012, 122, 5; 870-873
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 33.

Tytuł:

Investigations of SAW Structures with Oxide Graphene Layer to Detection of Selected Gases

Autorzy:

Drewniak, S.
Pustelny, T.
Setkiewicz, M.
Maciak, E.
Urbańczyk, M.
Procek, M.
Opilski, Z.
Jagiello, J.
Lipinska, L.

Powiązania:

https://bibliotekanauki.pl/articles/1399339.pdf

Data publikacji:

2013-09

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

42.81.Pa
82.47.Rs
07.07.Df

Opis:

In this paper we present the results of investigations of graphene oxide layers using the SAW structure (structure with surface acoustic wave propagated) exposed to the affect of low concentrations of hydrogen and nitrogen dioxide in synthetic air. During the measurements, the differential signal (from two measuring channels) was recorded. The sensing graphene oxide layer was deposited only on first channel, whereas the second channel was not covered by any additional layer. The tests were made with various concentrations of the analyzed gases and at various temperatures of the sensing structure during the measurements. Analyses were performed with special emphasis on the time response of the sensor structure to changes in the gas atmosphere.

Źródło:

Acta Physica Polonica A; 2013, 124, 3; 402-405
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 34.

Tytuł:

Composition and Temperature Dependence of Giant Magnetoresistance in Melt-Spun Co_{x}Cu_{100-x} Ribbons

Autorzy:

Idzikowski, B.
Nenkov, K.
Handstein, A.
Hütten, A.
Müller, K. H.

Powiązania:

https://bibliotekanauki.pl/articles/1964599.pdf

Data publikacji:

1997-08

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

75.70.Pa
72.15.Eb
81.40.Rs

Opis:

Structure, magnetic properties and magnetoresistance in as-quenched and annealed Co$\text{}_{x}$Cu$\text{}_{100-x}$ samples were investigated. Homogeneous metastable Co$\text{}_{x}$Cu$\text{}_{100-x}$ alloys were prepared by the single-roller technique. The maximum value of magnetoresistance is shifted to higher annealing temperatures with increasing measuring temperature. At higher measuring temperatures the magnetoresistance is not saturated in fields as high as 16 T. Susceptibility measurements showed the formation of hcp-structured Co clusters. For small cobalt concentrations there is a transition from giant magnetoresistance to the normal anisotropic magnetoresistance.

Źródło:

Acta Physica Polonica A; 1997, 92, 2; 307-310
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 35.

Tytuł:

Magnetism in Carbon: Writing Magnetic Structures with a Proton Micro-Beam on Graphite Surfaces

Autorzy:

Schindler, K.
Spemann, D.
Ziese, M.
Esquinazi, P.
Butz, T.

Powiązania:

https://bibliotekanauki.pl/articles/2044648.pdf

Data publikacji:

2006-03

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

81.40.Rs
75.50.Pp
81.05.Uw

Opis:

Recent publications demonstrated the generation of magnetic order at room temperature on graphite surfaces after irradiation with protons. In this contribution we show that it is possible to produce magnetic structures in the micrometer range using a proton micro-beam by proton irradiation of the surface of highly oriented pyrolytic graphite samples. The experimental results are compared with micromagnetic simulations.

Źródło:

Acta Physica Polonica A; 2006, 109, 3; 249-255
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 36.

Tytuł:

Transport and Magnetic Properties of Low Temperature Annealed Ga$\text{}_{1-x}$Mn$\text{}_{x}$As

Autorzy:

Kuryliszyn, I.
Wojtowicz, T.
Liu, X.
Furdyna, J. K.
Dobrowolski, W.
Broto, J.-M.
Goiran, M.
Portugall, O.
Rakoto, H.
Raquet, B.

Powiązania:

https://bibliotekanauki.pl/articles/2035604.pdf

Data publikacji:

2002

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

75.50.Pp
75.50.Dd
81.40.Rs

Opis:

We present the results of low temperature annealing studies of Ga$\text{}_{1-x}$Mn$\text{}_{x}$As epilayers grown by low temperature molecular beam epitaxy in a wide range of Mn concentrations (0.01

Źródło:

Acta Physica Polonica A; 2002, 102, 4-5; 659-665
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 37.

Tytuł:

The genetic polymorphism in the STK11 does not affect gestational diabetes

Autorzy:

Alharbi, Khalid
Khan, Imran
Eldesouky, Malek
Al-Hakeem, Malak
Abotalib, Zeinab

Powiązania:

https://bibliotekanauki.pl/articles/1039007.pdf

Data publikacji:

2015

Wydawca:

Polskie Towarzystwo Biochemiczne

Tematy:

gestational diabetes
STK11
rs8111699 polymorphism
Saudi women

Opis:

Gestational diabetes mellitus (GDM) is defined as carbohydrate intolerance of variable severity that develops during pregnancy. Recent studies indicate that GDM onset is rapid, and that women with GDM will develop other metabolic disorders such as obesity, type 2 diabetes, and cardiovascular disease in their future. Serine/threonine kinase 11 (STK11) is engaged in the insulin signaling pathway and encoded protein is an important activator of adenosine monophosphate activated protein kinase. Based on the previously reported association between the STK11 gene and diabetes, we aimed to investigate whether the rs8111699 polymorphism in STK11 has any role in gestation diabetes in Saudi women. In this case-control study, we recruited pregnant Saudi women based on biochemical analysis of their blood samples. Genomic DNA was obtained from confirmed subjects (200 GDM cases and 300 non-GDM). PCR-RFLP analysis was performed to detect the C528G polymorphism in the STK11 gene. The anthropometric and clinical data were similar between the GDM and non-GDM subjects (p > 0.05), whereas the biochemical analysis was significantly different between the cases and controls (p < 0.05). The genotype and allele frequencies between of the STK11 gene were not statistically significant difference between the GDM and non-GDM groups (OR=0.82; 95% CI:=0.6-1.0; p=0.12). Our study suggests that the rs8111699 polymorphism has no role in the development of GDM in pregnant Saudi women.

Źródło:

Acta Biochimica Polonica; 2015, 62, 3; 569-572
0001-527X

Pojawia się w:

Acta Biochimica Polonica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 38.

Tytuł:

The Pressure Effect on Glass Formation and Cluster Structure Evolution during Cooling Process of PdNi Alloy: A Molecular Dynamics Study

Autorzy:

Kazanc, S.
Celik, F.

Powiązania:

https://bibliotekanauki.pl/articles/1195946.pdf

Data publikacji:

2014-01

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

64.70.pe
83.10.Rs
34.20.Cf

Opis:

Based on the embedded atom method a molecular dynamics simulation technique has been used to study the glass formation and atomic short range order in Pd-Ni binary alloy. By using radial distribution functions and Honeycutt-Andersen pair analysis methods, the structural development of this alloy is studied by quenching from the liquid at two different cooling rates and under 0 and 5 GPa pressures. The results show that the variation of local atomic bonded pairs is of great importance to understand the glass formation process and increase of the number of the ideal icosahedra under high pressure contributes to more ideal glass formation of model alloy.

Źródło:

Acta Physica Polonica A; 2014, 125, 1; 49-53
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 39.

Tytuł:

The Effects of Chemical Composition on Soft Magnetic Materials Behaviour

Autorzy:

Bidulský, R.
Actis Grande, M.
Ferraris, L.
Ferraris, P.
Bidulská, J.

Powiązania:

https://bibliotekanauki.pl/articles/1533981.pdf

Data publikacji:

2010-11

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

75.50.-y
81.20.Ev
81.40.Rs

Opis:

The main aim of the presented work was to study the effects of chemical composition on the magnetic properties (in terms of B-H characteristics) of an insulated iron powder compound with various addition of the aluminium alloy (0, 5 and 10 wt%). The magnetic properties of the powder were significantly influenced by density and "sintering" effects. The addition of aluminium alloy maintaining suitable values of coercive force, remanence and core losses; this makes the modified insulated iron powder compound a promising soft magnetic material in several applications.

Źródło:

Acta Physica Polonica A; 2010, 118, 5; 802-803
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 40.

Tytuł:

Molecular Interaction between Bacterial Antigens and Macrophage Receptors Studied by Atomic Force Microscopy

Autorzy:

Targosz, M.
Czuba, P.
Biedroń, R.
Strus, M.
Gamian, A.
Marcinkiewicz, J.
Szymoński, M.

Powiązania:

https://bibliotekanauki.pl/articles/2044777.pdf

Data publikacji:

2006-03

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

82.37.Rs
87.64.Dz
87.15.Kg

Opis:

Atomic force spectroscopy was used to study interaction strengths between bacterial antigens and receptors on macrophages. This method allowed for a direct comparison of the interaction strengths in different systems studied at the level of single molecules.

Źródło:

Acta Physica Polonica A; 2006, 109, 3; 421-426
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 41.

Tytuł:

The Structure of Dendrimers with Charged Terminal Groups: Monte Carlo Simulations

Autorzy:

Majtyka, M.
Kłos, J.

Powiązania:

https://bibliotekanauki.pl/articles/2047174.pdf

Data publikacji:

2006-12

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

82.20.Wt
82.35.Lr
82.35.Rs

Opis:

Taking into account the full Coulomb potential and the excluded volume interactions, properties of dendrimers with generations g = 5, 6 with charged terminal groups and counterions in an athermal solvent are examined by lattice Monte Carlo simulations. The study treats counterions explicitly and focuses on the local structure of the systems inspected by pair correlation functions g$\text{}_{ab}$ that provide information on distributions of monomers, terminal groups and ions in space at various temperatures T*. Special emphasis is placed on counterions and their role they play in causing conformational changes of the molecules. The simulations show that counterions penetrate the interior of the dendrimers, and there is a major increase in their concentration there as T* decreases. Some of them condense onto the terminal groups and a reduction in the mean effective charge ⟨Q⟩ of the dendrimers appears. Within the range of temperatures where the condensation (as a function of T*) is sharp the molecules weakly swell up when compared to their size at the other temperatures. This kind of behaviour is also reflected by the distributions of monomers and terminal groups.

Źródło:

Acta Physica Polonica A; 2006, 110, 6; 833-843
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 42.

Tytuł:

The Response of Work Function οf Thin Metal Films to Interaction with Hydrogen

Autorzy:

Duś, R.
Nowicka, E.
Nowakowski, R.

Powiązania:

https://bibliotekanauki.pl/articles/1811510.pdf

Data publikacji:

2008-12

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

68.43.-h
82.30.Rs
73.30.+y

Opis:

The aim of this paper is to summarize the results of experiments carried out at our laboratory on the response of the work function of several thin films of transition metals and rare earth metals to interaction with molecular hydrogen. The main focus concerns the description of surface phenomena accompanying the reaction of hydride formation as a result of the adsorbate's incorporation into the bulk of the thin films. Work function changes Δ Φp caused by adsorption and reaction concern the surface, hence this experimental method is appropriate for solving the aforementioned problem. A differentiation is made between the work function changes ΔΦp due to creation of specific adsorption states characteristic of hydrides, and ΔΦp arising as a result of surface defects and protrusions induced in the course of the reaction. The topography of thin metal films and thin hydride films with defects and protrusions was illustrated by means of atomic force microscopy. For comparison, the paper discusses work function changes caused by $H_2$ interaction with thin films of metals which do not form hydrides (for example platinum), or when this interaction is performed under conditions excluding hydride formation for thermodynamic reasons. Almost complete diminishing of ΔΦp was observed, in spite of significant hydrogen uptake on some rare earth metals, caused by formation of the ordered H-Y-H surface phase.

Źródło:

Acta Physica Polonica A; 2008, 114, S; S-29-S-47
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 43.

Tytuł:

Heat Capacity and Internal Pressure of Cyclopentanol at Pressures up to 100 MPa Determined by the Acoustic Method

Autorzy:

Dzida, M.

Powiązania:

https://bibliotekanauki.pl/articles/1811513.pdf

Data publikacji:

2008-12

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

82.30.Rs
62.50.-p
65.40.Ba

Opis:

Isobaric heat capacities and internal pressures of cyclopentanol at pressures up to 100 MPa and temperatures ranging from 293 to 318 K were determined by the acoustic method. The obtained results were compared with those of pentan-1-ol in order to study the influence of the molecular configurations comprising cyclic and normal-chain structures on pressure and temperature dependence of the thermodynamic properties. It was found that the temperature and pressure coefficients of internal pressure were sensitive to the structural organization of the liquid and reflected the character of the interactions.

Źródło:

Acta Physica Polonica A; 2008, 114, 6A; A-75-A-80
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 44.

Tytuł:

Assessing the Potential Health Effect of Solid Waste Dump Site Located Close to Residential Areas in Jalingo, Taraba State Using Geospatial Techniques

Autorzy:

Tukura, Ejati D.
Ojeh, Vincent Nduka
Philip, Anita H.
Ayuba, Amina

Powiązania:

https://bibliotekanauki.pl/articles/1109618.pdf

Data publikacji:

2018

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Tematy:

Jalingo
Nigeria
Potential Health Effect
RS/GIS Approach
Solid Waste

Opis:

The study examined the application of Remote Sensing and Geographic Information Systems in estimating the potential health effects of solid waste dump sites located close to residences within Jalingo town, in mapping out the existing dumpsites, in carrying out proximity analysis and in assessing the impact of these dump sites on residences within the study area. Both primary and secondary data were used to achieve the objectives of the study. The primary data were the geographical coordinates of all the dumpsites from the selected five wards in the study area. This was obtained using hand held GPS. The secondary data applied included administrative boundary maps (Ancillary data) and recorded cases of malaria incidence from health facilities located in the area. Data were analyzed in ArcGIS 10.3 environment to display the X and Y coordinates and to obtain the spatial distribution of the dumpsites on a composites map. Geo-processing using ring buffering was carried out to form a proximity analysis of the dumpsites. Assessment of the impact of the dumpsites on the health of dwellers within the study area was achieved from a proximity analysis that compared location with the recorded cases of malaria. The findings of the study revealed that proximity analysis of a 500m and 1000m standard demonstrated that residences within 7.857 km2 and 31.439 km2 of each dumpsite, respectively, are in danger of dumpsite related disease. This is because out of the total built-up area of 61.479 km2 in the study area; most of the dumpsites located within 31.439 km2 of the built-up area do not conform to the NESREA standard criteria of siting a dumpsite. The assessment of the cases of malaria incidence recorded and the numbers of dumpsites revealed that dumpsites location close to residence had more cases of malaria incidence, thus it is believed that the dumpsites contribute to the breeding the female anopheles mosquito that transmit malaria to humans. The study recommends dumpsite location suitability analysis be performed in Jalingo and that to avoid endemic Malaria, the appropriate authorities close down dumpsites close to residences.

Źródło:

World News of Natural Sciences; 2018, 20; 160-175
2543-5426

Pojawia się w:

World News of Natural Sciences

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 45.

Tytuł:

Production and Microstructural Characterization of Nb-Si based in-situ Composite

Autorzy:

Garip, Y.

Powiązania:

https://bibliotekanauki.pl/articles/353665.pdf

Data publikacji:

2020

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

Nb-Si in-situ composite
powder metallurgy
RS
solid solution strengthening

Opis:

The Nb-Si based in-situ composite was produced by resistive sintering (RS) technique. In order to identify present phases, X-ray diffraction (XRD) analysis was used on the composite. XRD analysis revealed that the composite was composed of Nb solid solution (Nbss) and α-Nb₅Si₃ phases. The microstructure of the composite was characterized by using a scanning electron microscope (SEM). The energy-dispersive spectroscopy (EDS) was performed for the micro-analysis of the chemical species. SEM-EDS analyses show that the microstructure of composite consists of Nbss, Nb₅Si₃ and small volume fraction of Ti-rich Nbss phases. The micro hardness of constituent phases of the composite was found to be as 593±19 and 1408±33 Hv_0.1, respectively and its relative density was % 98.54.

Źródło:

Archives of Metallurgy and Materials; 2020, 65, 2; 917-921
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 46.

Tytuł:

Wpływ preparatów enzymatycznych na trwałość pieczywa mieszanego wytworzonego na zakwasie i przechowywanego w warunkach zamrażalniczych
Effect of enzyme preparations in durability of mixed bread made with sourdough and stored under freezing conditions

Autorzy:

Kwaśniewska-Karolak, I.
Mostowski, R.

Powiązania:

https://bibliotekanauki.pl/articles/2129898.pdf

Data publikacji:

2020

Wydawca:

Polskie Towarzystwo Technologów Żywności

Tematy:

chleb na zakwasie
preparaty enzymatyczne
skrobia oporna (RS)
zamrażalnicze prze-
chowywanie

Opis:

Celem pracy było określenie wpływu dodatku preparatów enzymatycznych oraz czasu i warunków przechowywania na fizykochemiczne właściwości pieczywa mieszanego wytworzonego na zakwasie. Badaniom poddano chleb pszenno-żytni bez udziału preparatów (kontrolny) oraz chleb z dodatkiem prepa- ratów Finizyme i G-Zyme w ilościach 10 i 30 mg/900 g (bochenek). Chleby sporządzono zgodnie z recep- turą na zakwasie, wypieczono w piecu przeznaczonym do wypieku chleba i przechowywano w warunkach zamrażalniczych przez 14 dni. W chlebach świeżych po siedmiu i czternastu dniach przechowywania wykonano analizy zawartości wody, objętości (chleb świeży), kwasowości, zawartości skrobi opornej i twardości miękiszu chleba. Wykonano także ocenę sensoryczną pieczywa. W czasie zamrażalniczego przechowywania zaobserwowa- no zmniejszenie zawartości wody (o 1 ÷ 12 %) i wzrost kwasowości, który w przypadku pieczywa z do- datkiem preparatów enzymatycznych przyczynił się do większego przyrostu ilości skrobi opornej (RS) w porównaniu z chlebem kontrolnym. Dodatek enzymów wpłynął znacząco na objętość chleba i na po- prawę jego wyglądu zewnętrznego, co spowodowało, że został wyżej oceniony pod względem cech senso- rycznych. Twardość chleba uległa zwiększeniu w trakcie dwóch tygodni jego przechowywania w stanie głębokiego zamrożenia. Większe zmiany wartości tego parametru stwierdzono w chlebie kontrolnym, natomiast dodatek preparatów enzymatycznych ograniczył w pewnym stopniu szybkość twardnienia miękiszu. Wprowadzenie do receptury chleba na zakwasie preparatów enzymatycznych należy więc uznać za korzystne z uwagi na wzrost objętości bochenków, ograniczenie ich twardnienia podczas zamrażalni- czego przechowywania oraz zwiększenie zawartości skrobi RS – czynnika o charakterze prozdrowotnym.

Źródło:

Żywność Nauka Technologia Jakość; 2020, 27, 1; 63 - 73
1425-6959

Pojawia się w:

Żywność Nauka Technologia Jakość

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 47.

Tytuł:

Effect of the Applied Current Density on the Structural and Magnetic Properties of the Electrodeposited Cobalt-Nickel Alloy Thin Films

Autorzy:

Özdemır, R.

Powiązania:

https://bibliotekanauki.pl/articles/1031697.pdf

Data publikacji:

2017-09

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

81.05.Bx
81.40.Rs
82.45.Qr
81.15.Pq

Opis:

In this study, cobalt-nickel (Co-Ni) alloys were deposited electrochemically onto aluminum substrates under applied current densities of 103.8, 138.4, 173 and 207.6 A m¯². Influence of the applied current density on the structural and magnetic properties of the Co-Ni alloys was investigated. The bath for Co-Ni alloys deposition was composed of 0.08 mol l¯¹ CoSO₄·7H₂O, 0.2 mol l¯¹ NiCl₂·6H₂O, 0.1 mol l¯¹ NiSO₄·6H₂O and 0.25 mol l¯¹ H₃BO₃. The electrochemical investigation of Co-Ni alloys was completed using cyclic voltammetry and galvanostatic studies. Inductively coupled plasma analysis has shown that the amount of the cobalt in the deposited alloy has decreased from 73.61% to 67.01% with the increase of the applied current density from 103.8 to 207.6 A m¯². According to the magnetic analysis results, the values of coercivity coefficient of the deposited Co-Ni alloys range between 115 and 150 Oe, confirming ferromagnetic behavior of the alloys. Experiment results indicate that magnetic and structural properties of the Co-Ni alloy deposits are greatly influenced by the applied current density in the electrodeposition system.

Źródło:

Acta Physica Polonica A; 2017, 132, 3; 770-774
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 48.

Tytuł:

The Effect of Cryo-Rolling and Annealing on Magnetic Properties in Non-Oriented Electrical Steel

Autorzy:

Kvačkaj, T.
Bella, P.
Bidulský, R.
Kočiško, R.
Petroušek, P.
Fedoriková, A.
Bidulská, J.
Jandačka, P.
Lupták, M.
Černík, M.
Pernis, R.

Powiązania:

https://bibliotekanauki.pl/articles/1032280.pdf

Data publikacji:

2017-04

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

75.50.Bb
81.05.Bx
81.40.Rs
81.40.Ef

Opis:

The goal of the present work is to compare progressive technology - rolling at cryogenic temperature and classical rolling at ambient temperature followed by an investigation of their impact on the final microstructure and the magnetic properties of non-oriented electrical steel. Non-oriented electrical steel is characterized by high magnetic induction, low magnetic losses, and low coercivity. The best magnetic properties are achieved using preferable texture and optimal grain size. In this paper there is analyzed the percentage of different textural components after cryo-rolling and after rolling at ambient temperature. To obtain maps of inverse pole figures, the electron backscatter diffraction method was used. The main contribution of this study was that the samples rolled at cryo conditions and after final annealing reached better magnetic properties than at ambient temperature, which was reflected by low magnetic losses and coercivity.

Źródło:

Acta Physica Polonica A; 2017, 131, 4; 1105-1107
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 49.

Tytuł:

Risk factors of acute respiratory distress syndrome after on-pump cardiac surgery in the INFLACOR cohort study

Autorzy:

Kowalik, Maciej Michał
Lango, Romuald
Łoś, Andrzej
Chmara, Magdalena
Brzeziński, Maciej
Lewandowski, Krzysztof
Klapkowski, Andrzej
Rogowski, Jan

Powiązania:

https://bibliotekanauki.pl/articles/895791.pdf

Data publikacji:

2020-05-29

Wydawca:

Gdański Uniwersytet Medyczny

Tematy:

cardiac surgery
acute respiratory distress syndrome
cardiopulmonary bypass
LBP1 rs2232582

Opis:

Background: Acute respiratory distress syndrome (ARDS) is a serious complication after cardiac surgery with a variety of clinical risk factors. It was hypothesized that genome variants predispose these patients to it. Material and methods: A cohort of 509 adult Caucasians undergoing on-pump cardiac surgery were observed for postoperative ARDS defined by the Berlin definition. Clinical variables and 10 single-nucleotide variants of genes involved in inflammatory pathways were analyzed for associations with four groups, defined by paO2/fiO2 (PF) ratio: 1) no ARDS (PF > 300 mmHg), 2) mild ARDS (200 < PF ≤ 300 mm Hg), 3) moderate ARDS (100 < PF ≤ 200 mm Hg), and 4) severe ARDS (PF ≤ 100 mmHg). Variables remaining in trends at p < 0.05 were considered significant. Results: The prevalence of ARDS was 7.9%. Only LBP1 rs2232582 remained in a genotypic trend with ARDS aggravation (p = 0.08). Clinical variables associated with ARDS aggravation: impaired left ventricular ejection fraction (p = 0.04), pulmonary hypertension (p = 0.01), intraoperative hypotension (p = 0.009), and postoperative day 1 white blood cell count (p = 0.015). More aggravated ARDS was associated with longer mechanical ventilation (p=0.01) and length of stay in ICU (p = 0.002). Conclusions: The borderline association with LBP1 rs2232582 and the identified risk factors suggest possible involvement of the LPS-LBP1 pathway in ARDS of the INFLACOR cohort.

Źródło:

European Journal of Translational and Clinical Medicine; 2020, 3, 1; 24-33
2657-3148
2657-3156

Pojawia się w:

European Journal of Translational and Clinical Medicine

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 50.

Tytuł:

Peculiarities of deposition times on gas sensing behaviour of vanadium oxide thin films

Autorzy:

Bagheri Khatibani, A.
Abbasi, M.
Rozati, S.

Powiązania:

https://bibliotekanauki.pl/articles/1065062.pdf

Data publikacji:

2016-06

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

81.05.-t
81.07.-b
73.61.Le
81.15.Rs

Opis:

The importance of vanadium oxide in solid state science as a semiconductor encouraged us to prepare and investigate its microstructure and surface properties related to gas sensing characteristics. Hence, vanadium oxide thin films were deposited by spray pyrolysis method. The prepared films were placed in an electric circuit and the sensing characteristics of these films to ethanol vapors were studied. It was possible to find correlations between nanostructure and electrical properties of the obtained thin films and to optimize conditions of its synthesis. By X-ray diffraction, field emission scanning electron microscopy, and atomic force microscopy, the structure of the deposited films was determined. Based on atomic force microscopy results, the fractal analysis showed a decreasing trend of the fractal dimension (the slope of the log (perimeter) vs. log (area)) versus the deposition time. It was found that the film growth and gas response were affected by the deposition time. The operating temperature of the sensor was optimized for the best gas response. In accordance with our findings, the film deposited at the lowest deposition time (20 min) had the highest sensing response to ethanol.

Źródło:

Acta Physica Polonica A; 2016, 129, 6; 1245-1251
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 51.

Tytuł:

Molecular Dynamics Simulations of Energetic Ar Cluster Bombardment of Ag(111)

Autorzy:

Palka, G.
Rzeznik, L.
Paruch, R.
Postawa, Z.

Powiązania:

https://bibliotekanauki.pl/articles/1400436.pdf

Data publikacji:

2013-05

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

68.49.Sf
82.80.Ms
83.10.Rs
79.20.Rf

Opis:

Large-scale molecular dynamics computer simulations are used to investigate the dynamics of material ejection during high-energy $Ar_n$ cluster bombardment of Ag(111) at normal incidence. The silver sample containing 7 million atoms is bombarded with $Ar_n$ projectiles (n=45-30000) with kinetic energy spanning from a few keV up to 1 MeV. Such a wide range of projectile parameters allows probing processes taking place during low-density collision cascade as well as during high-density events characteristic of micrometeorite bombardment in space. The material modifications and total sputtering yield of ejected particles are investigated. While at low-energy impacts, ejection of individual silver atoms is the main emission channel, the ejection of large clusters from the corona of the created crater dominates for the high-energy impacts.

Źródło:

Acta Physica Polonica A; 2013, 123, 5; 831-833
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 52.

Tytuł:

Formation of Hydrogen Bonds; Hydroxyl and Methyl Groups Dynamics in 2,2-dimethylbutan-1-ol and 2,3-dimethylbutan-2-ol: DFT, IINS and IR Investigations

Autorzy:

Juszyńska, E.
Hołderna-Natkaniec, K.
Massalska-Arodź, M.
Natkaniec, I.
Ściesińska, E.
Ściesiński, J.

Powiązania:

https://bibliotekanauki.pl/articles/1418324.pdf

Data publikacji:

2012-10

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

82.30.Rs
82.80.Gk
78.70.Nx
31.15.A-

Opis:

Dynamics of 2,2-dimethylbutan-1-ol and 2,3-dimethylbutan-2-ol have been studied by experimental spectroscopy methods, i.e., inelastic incoherent neutron scattering and infrared absorption. Experimental results were discussed and compared with the results of the quantum chemical calculations performed by semi-empirical PM3 and the density functional theory methods assuming the isolated molecule and dimer, trimer and tetramer clusters. The density functional theory modelling of vibrational spectra of monomers and OH bonded molecular clusters allows to assign the inter- and intermolecular vibrational modes observed in density of states and absorption spectra.

Źródło:

Acta Physica Polonica A; 2012, 122, 4; 765-775
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 53.

Tytuł:

$Cu-Fe_3C(Cr_3C_2)$ Bulk Nanocomposites Prepared by Mechanosynthesis Followed by Magnetic Pulse Compaction

Autorzy:

Eremina, M.
Lomayeva, S.
Yelsukov, E.
Paranin, S.

Powiązania:

https://bibliotekanauki.pl/articles/1375351.pdf

Data publikacji:

2014-10

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

77.84.Lf
81.07.Bc
81.20.Wk
81.40.Rs

Opis:

The $Cu-Fe_3$ and $Cu-Cr_3C_2$ bulk nanocomposites are prepared by consolidation of the mechanically alloyed powders. The structure and properties (density, Vickers microhardness and electrical conductivity) of them have been studied. It is shown that microhardness is equal to 236 HV and 470 HV for a Cu-5 vol.% carbide phase and for a Cu-30 vol.% carbide phase, respectively. The microhardness which can be influenced by the heat treatment temperature depends on the grain size of the Cu matrix. The electrical conductivity values of 38-44% IACS (International Annealing Copper Standard) at room temperature have been found.

Źródło:

Acta Physica Polonica A; 2014, 126, 4; 947-950
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 54.

Tytuł:

Effect of Molecular Orientation on Photovoltaic Efficiency and Carrier Transport in a New Semiconducting Polymer

Autorzy:

Kažukauskas, V.
Pranaitis, M.
Sentein, C.
Rocha, L.
Raimond, P.
Duyssens, I.
Van Severen, I.
Lutsen, L.
Cleij, T.
Vanderzande, D.

Powiązania:

https://bibliotekanauki.pl/articles/1813394.pdf

Data publikacji:

2008-03

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

73.50.-h
81.40.Rs
81.40.Tv
73.61.Ph

Opis:

New functionalized soluble poly(p-phenylene vinylene) derivative bearing polar molecules was designed and synthesized in order to investigate effects of molecular orientation in polymer photovoltaic devices. The active polar molecule is the 4-(N-butyl-N-2-hydroxyethyl)-1- nitro-benzene group. The grafting of the push-pull molecule with a donor/transmitter/acceptor structure, possessing a large ground state dipole moment, enables the molecular orientation by a dc electric field. An internal electric field stored in such system facilitates exciton dissociation and improves charge transport in single-layer devices. In our systems an increase in the external quantum efficiency by a factor of about 1.5 to 2 is estimated. The associated effects of orientation on the carrier injection and transport properties were evidenced.

Źródło:

Acta Physica Polonica A; 2008, 113, 3; 1009-1012
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 55.

Tytuł:

On the Mechanism of H-Induced Curie-Point Relaxation in Fe-Based Glassy Alloys

Autorzy:

Balla, S.
Kováč, J.
Novák, L.
Lovas, A.

Powiązania:

https://bibliotekanauki.pl/articles/1813523.pdf

Data publikacji:

2008-01

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

71.23.Cq
71.55.Jv
75.50.Kj
81.40.Rs

Opis:

In Fe based glasses not solely the stress-sensitive magnetic properties, but also the amorphous Curie temperature $(T_C^{am})$ can be altered by hydrogen absorption or due to the low temperature "heat treatments" in liquid $N_2$ (-196°C). The sign and magnitude of this $T_C^{am}$ shift is strongly compositional dependent, but it is also influenced by the thermal history of glasses (heat treatments). In this paper new experimental results are presented, which were obtained on FeCrB alloys, supporting the previous observations. An attempt of interpretation of the results is also made, which is based on the existence of the quenched-in phase reminiscences, being inherited from the liquid structure.

Źródło:

Acta Physica Polonica A; 2008, 113, 1; 55-59
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 56.

Tytuł:

Phase Relations in Gd$\text{}_{2}$O$\text{}_{3}$-CeO$\text{}_{2}$-CuO System at 980°C. Part I

Autorzy:

Horyń, R.
Sikora, A.
Bukowska, E.

Powiązania:

https://bibliotekanauki.pl/articles/2041467.pdf

Data publikacji:

2004-11

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

64.75.+g
81.40.Rs
75.50.-y
72.20.My

Opis:

Phase equilibria in Gd$\text{}_{2}$O$\text{}_{3}$-CeO$\text{}_{2}$-CuO system were studied based on samples obtained from appropriate mixtures of the starting components, prepared by a conventional solid state reaction in air. The phase relations prevalent in this system have been deduced based on X-ray diffraction of well-equilibrated samples. An isothermal cross-section diagram through the system at 980°C is presented and chemical constitution of the Ce-doped Gd$\text{}_{2}$CuO$\text{}_{4}$ phase is proposed.

Źródło:

Acta Physica Polonica A; 2004, 106, 5; 727-731
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 57.

Tytuł:

Phase and Structural Study of Self-Doped La$\text{}_{1-x-y}$Ca$\text{}_{x}$Ø$\text{}_{y}$MnO$\text{}_{3+δ}$

Autorzy:

Figueiras, F.
Araújo, J. P.
Amaral, V. S.
Tavares, P. B.
Lopes, A. B.
Vieira, J. M.

Powiązania:

https://bibliotekanauki.pl/articles/2037125.pdf

Data publikacji:

2004

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

64.75.+g
81.40.Rs
75.50.-y
72.20.My

Opis:

To understand the combined effect of divalent ion and A-site vacancy (Ø) self-doping, beyond the binary La$\text{}_{1-x}$MnO$\text{}_{3}$ system, polycrystalline La$\text{}_{1-x-y}$Ca$\text{}_{x}$Ø$\text{}_{y}$MnO$\text{}_{3+δ}$ samples were studied. Samples with Ca substitution and excess Mn in the range x<0.33 and y<0.45, respectively, were prepared by standard solid-state reactions. Structural and phase analysis of the samples were done by X-ray diffraction and transmission electron microscopy. The manganite structure in this composition range includes rhombic and orthorhombic phases. Most samples contain the hausmanite phase (Mn$\text{}_{3}$O$\text{}_{4}$) coexisting with the manganite phase. A small amount of perovskite related AMn$\text{}_{7}$O$\text{}_{12}$ (A=La,Ca) structure near the hausmanite-manganite boundary is also found in samples treated in oxygen atmosphere. The calculated vacancy content accommodated in the manganite phase can be higher than 1/8, the reported limit for La$\text{}_{1-x}$MnO$\text{}_{3}$, which is confirmed in our x=0 sample. For the compositions studied, a ferromagnetic metallic behavior below T$\text{}_{C}$ is found, confirming the stability of the Mn sublattice, and near the optimum stoichiometric ((x=0. 33, y=0) system, a net A-site vacancy content (up to y=0.2) does not degrade the magnetic and electric properties.

Źródło:

Acta Physica Polonica A; 2004, 105, 1-2; 173-182
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 58.

Tytuł:

Magnetic Properties of Oxygen Deficient Y$\text{}_{0.33}$Sr$\text{}_{0.67}$CoO$\text{}_{3-δ}$

Autorzy:

Zhang, Y. F.
Sasaki, S.
Yanagisawa, O.
Izumi, M.

Powiązania:

https://bibliotekanauki.pl/articles/2047221.pdf

Data publikacji:

2007-01

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

72.80.Ga
75.60.-d
75.70.Rf
81.40.Rs

Opis:

We studied magnetic properties of perovskite-type Y$\text{}_{0.33}$Sr$\text{}_{0.67}$ CoO$\text{}_{2.614}$ and Y$\text{}_{0.33}$Sr$\text{}_{0.67}$CoO$\text{}_{2.707}$ prepared under different sintered temperatures at 1250ºC and 1100ºC, respectively. A dc magnetization jump associated with a large thermal hysteresis around 180 K was found in Y$\text{}_{0.33}$Sr$\text{}_{0.67}$CoO$\text{}_{2.614}$, which indicates a kind of magnetic memory effect. On the other hand, Y$\text{}_{0.33}$Sr$\text{}_{0.67}$CoO$\text{}_{2.707}$ shows a larger magnetization with a small magnetization jump around 200 K and lower Curie temperature than those of Y$\text{}_{0.33}$Sr$\text{}_{0.67}$CoO$\text{}_{2.614}$. Rich Co$\text{}^{3+}$ ions in the low temperature sintered Y$\text{}_{0.33}$Sr$\text{}_{0.67}$CoO$\text{}_{2.707}$ possibly introduce large magnetization and high magnetization jump temperature. This may be coming from a surface/volume effect of Co$\text{}^{3+}$ ions appearing in the polycrystalline sample prepared at low temperature. The ferromagnetism resulted from the different surface/volume ratio contributes to a part of magnetization and may result in the change of the Curie temperature.

Źródło:

Acta Physica Polonica A; 2007, 111, 1; 79-86
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 59.

Tytuł:

Extraction of urban construction development with using Landsat satellite images and geoinformation systems

Autorzy:

Arifjanov, Aybek M.
Akmalov, Shamshodbek B.
Samiev, Luqmon N.

Powiązania:

https://bibliotekanauki.pl/articles/1844383.pdf

Data publikacji:

2021

Wydawca:

Instytut Technologiczno-Przyrodniczy

Tematy:

ArcGIS
geographic information system
GIS
Landsat satellite image
remote sensing
RS
urban

Opis:

In recent times there have been many changes on Earth, which have appeared after anthropogenic impact. Finding solutions to problems in the environment requires studying the problems quickly, make proper conclusions and creating safe and useful measures. Humanity has always had an effect on the environment. There can be many changes on the Earth because of direct and indirect effects of humans on nature. Determining these changes at the right time and organizing meas-urements of them requires the creation of quick analysing methods. This development has improved specialists’ interest for remote sensing (RS) imagery. Moreover, in accordance with analysis of literature sources, agriculture, irrigation and ecology have the most demand for RS imagery. This article is about using geographic information system (GIS) and RS technologies in cadastre and urban construction branches. This article covers a newly created automated method for the calculation of artificial surface area based on satellite images. Accuracy of the analysis is verified according to the field experiments. Accuracy of analysis is 95%. According to the analysis from 1972 to 2019 artificial area enlargement is 13.44%. This method is very simple and easy to use. Using this data, the analysis method can decrease economical costs for field measures. Using this method and these tools in branches also allows for greater efficiency in time and resources.

Źródło:

Journal of Water and Land Development; 2021, 48; 65-69
1429-7426
2083-4535

Pojawia się w:

Journal of Water and Land Development

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 60.

Tytuł:

Influence of Annealing Conditions on Structural Development of Cryo Rolled FeSi Steel

Autorzy:

Kvackaj, T.
Bidulska, J.
Bidulsky, R.
Kovacova, A.
Kocisko, R.
Bella, P.
Luptak, M.
Bacso, J.

Powiązania:

https://bibliotekanauki.pl/articles/1367991.pdf

Data publikacji:

2014-07

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

75.50.Bb
81.05.Bx
81.40.Rs
81.40.Ef

Opis:

Non grain oriented isotropic electrical steels, commercially called NGOES, were investigated in cryogenic temperature conditions. At cryogenic temperatures plastic deformations form strong structural heterogeneities in the sample thickness. Samples processed by cryo rolling show a bigger storage energy. To achieve abnormal grain growth through the process of static recrystallization, the annealing conditions were applied to the deformed samples. Moreover, minimal magnetic losses were reached when mean grain size diameter was approximately 150 μm.

Źródło:

Acta Physica Polonica A; 2014, 126, 1; 184-185
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 61.

Tytuł:

The Life of Reason: R.S. Peters’ Stoic Philosophy of Education

Autorzy:

Stefaan, Cuypers,

Powiązania:

https://bibliotekanauki.pl/articles/891968.pdf

Data publikacji:

2015

Wydawca:

Uniwersytet Warszawski. Wydawnictwa Uniwersytetu Warszawskiego

Tematy:

R.S. Peters; rational passions
Kantian philosophy of education
stoicism
religious education

Opis:

Although R.S. Peters is one of the founding fathers of the analytical paradigm in the philosophy of education, in this paper I develop his less known synthetic view on education. To that purpose, I explore Peters’ integrative view on the relationship between reason and passion (the emotions), his view on the levels of life, and even his view on religious education. What emerges from this exploration is the claim that Peters is, in an important sense, not a Kantian philosopher and the thesis that Peters’ work on the analysis and justification of education gets its ultimate inspiration from an anthropological and metaphysical background, which Ray Elliot identified as Peters’ Stoic attitude.

Źródło:

Kultura Pedagogiczna. Międzynarodowe Pismo Pedagogiczne; 2015, 02(1); 21-38
2391-9175
2450-1816

Pojawia się w:

Kultura Pedagogiczna. Międzynarodowe Pismo Pedagogiczne

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 62.

Tytuł:

Copper Deficiency - a Crystallochemical Nature of Ce-Doped Gd$\text{}_{2}$CuO$\text{}_{4}$ Phase. Part II

Autorzy:

Horyń, R.
Bukowska, E.
Sikora, A.
Wołcyrz, M.

Powiązania:

https://bibliotekanauki.pl/articles/2041471.pdf

Data publikacji:

2004-11

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

64.75.+g
81.40.Rs
75.50.-y
72.20.My

Opis:

Two samples of nominal composition Gd$\text{}_{1.80}$Ce$\text{}_{0.15}$CuO$\text{}_{4.0}$ and Gd$\text{}_{1.85}$Ce$\text{}_{0.15}$CuO$\text{}_{4.075}$ were subjected for a long-term treatment in air at 1100°C, comprised with a precise control of their weights vs. time of the treatment applied. The gravimetric analysis and the iodometric titration, both showed a deficiency on Cu-site, steadily increasing vs. time with a slight tendency to a saturation. The X-ray analysis of the resulting products showed that even after 272 h of sintering, the samples remained single phase of the "214" structure type. Refinement of their crystal structures as well as density measurements, both allowed confirming Cu deficient structure constitution of these samples. Results of dc-magnetization measurements, performed prior to reduction of the sample's overall oxygen content, did not show any sign of superconductivity down to 4.2 K. These preliminary results indicate that copper deficiency, developing during synthesis, may occur to be a decisive factor for the reported lack of superconductivity in Ce-doped Gd$\text{}_{2}$CuO$\text{}_{4}$ phase. Oxygen content reduction and further tests on the samples obtained are in progress.

Źródło:

Acta Physica Polonica A; 2004, 106, 5; 733-738
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 63.

Tytuł:

Investigation of the Magnetic Properties of the Ni77/Fe14.4/Cu4.5/Mo0.5/Cr2.2/Si0.2 Alloy

Autorzy:

Ostrasz, Α.
Szuszkiewicz, Μ.
Kolano, R.

Powiązania:

https://bibliotekanauki.pl/articles/1933532.pdf

Data publikacji:

1995-07

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

76.80.+y
75.50.-y
81.40.Rs
78.70.Bj

Opis:

The positron annihilation and Μössbauer effect measurements in permalloy Νi77/Fe14.4/Cu4.5/Mo0.5/Cr2.2/Si0.2 for different cooling rates have been performed. The results have been discussed in view of the magnetic properties of the alloy. Based on the energy spectra of positron annihilation radiation and $\text{}^{57}$Fe Mössbauer spectra, the positron polarization coefficient and the hyperfine field distributions have been calculated, respectively. We demonstrate that the results of both, positron annihilation and Mössbauer effect measurements, are in very close relation to the initial permeability μ$\text{}_{0.4}$ (at H = 0.4 A/m) and resistivity measurements.

Źródło:

Acta Physica Polonica A; 1995, 88, 1; 211-218
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 64.

Tytuł:

Influence of Annealing Treatment on the Structure and Magnetic Properties of Fe-Al-Cu-Nb-Si-B Alloys

Autorzy:

Pavlík, G.
Matta, P.
Sovák, P.
Zorkovská, A.
Konč, M.

Powiązania:

https://bibliotekanauki.pl/articles/2013354.pdf

Data publikacji:

2000-05

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

61.16.Bg
75.50.Kj
75.80.+q
81.40.Rs

Opis:

In this paper we present experimental results on influence of Al content on the structure and saturation magnetostriction of Fe-Al-Cu-Nb-Si-B alloys after heat treatment. Transmission electron microscopy observations confirmed the existence of nanocrystalline structure after annealing at 490°C and 550°C for all samples. The crystallization temperature of FeSi phase and the temperature at which the polycrystalline transformation starts were determined from temperature dependence of electrical resistivity. Aluminium slightly decreases the first crystallization temperature and considerably decreases the saturation magnetostriction in as-quenched state.

Źródło:

Acta Physica Polonica A; 2000, 97, 5; 741-744
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 65.

Tytuł:

Investigation of the Structural and Magnetic Properties of the Cobalt-Nickel Alloys Fabricated in Various Electrolyte Solutions

Autorzy:

Özdemir, R.
Korkmaz, C.
Karahan, İ.

Powiązania:

https://bibliotekanauki.pl/articles/1031413.pdf

Data publikacji:

2017-09

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

81.05.Bx
81.40.Rs
81.15.Pq
82.45.Qr

Opis:

Cobalt-Nickel alloys have been widely used for decoration, in magnetic recording devices and corrosion resistance applications, etc. In this study, the influences of cobalt amount in electrolyte on the magnetic and structural properties of the electrodeposited Co-Ni alloys were investigated. An electrolyte solution, consisting of cobalt sulfate, nickel sulfate, nickel chloride and boric acid, was used in electrodeposition. The electrochemical investigation of Co-Ni alloys was completed using cyclic voltammetry and galvanostatic studies. The morphological and structural analyses of the alloys were performed using inductively coupled plasma, scanning electron microscopy, X-ray diffraction and vibrating sample magnetometer techniques. The effect of cobalt concentration on the magnetic properties, phase structure and grain size of the alloys was investigated. Magnetic hysteresis results indicate that the amount of the cobalt content in the electrolyte has a strong influence on the ferromagnetic behavior of fabricated alloys. Results of the study show that changing the electrodeposition parameters, such as composition of electrolyte solution, allows to fabricate alloys with different properties.

Źródło:

Acta Physica Polonica A; 2017, 132, 3; 1045-1049
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 66.

Tytuł:

Phase-Locked Particle Image Velocimetry Visualization of the Sound Field at the Outlet of a Circular Tube

Autorzy:

Weyna, S.
Mickiewicz, W.

Powiązania:

https://bibliotekanauki.pl/articles/1196700.pdf

Data publikacji:

2014-04

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

43.58.+z
43.28.Js
43.25.-x
47.35.Rs

Opis:

The shedding process and acoustic flow formation in the region of outlet of a cylinder duct has been investigated by means of the particle image velocimetry (PIV) technique. The research work on the behavior of the sound field at outlets of waveguides addresses issues of importance to industrial applications. The obtained results can be used in a number of industrial applications involving pipes, ducts and tubing. In our investigation the acoustics flow fields are measured with a phase-locked PIV system with high sampling rate and large internal memory block using DAVIS v. 8.11 software. A cross-correlation method, in conjunction with the FFT analysis, is used as a vector processing algorithm. A series of PIV vector maps was used to evaluate the acoustic velocity field at the open end of circular tube throughout the acoustic cycle for frequencies of 700 Hz and 1400 Hz. Six phase steps were assumed for one frequency cycle and the characteristic signal was extracted from the velocity data step and shown graphically.

Źródło:

Acta Physica Polonica A; 2014, 125, 4A; A-108-A-112
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 67.

Tytuł:

Shape Change of Micelles Dragged with Constant Velocity as Addressed in Terms of Biolubrication Application

Autorzy:

Bełdowski, P.
Winkler, R.
Hładyszowski, J.
Jung, S.
Gadomski, A.

Powiązania:

https://bibliotekanauki.pl/articles/1398811.pdf

Data publikacji:

2016-02

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

83.80.Rs
47.11.Mn
82.33.Nq
83.50.-v

Opis:

Molecular dynamics simulations have been performed for a model of coarse-grained lipids in water. We try to establish structural properties of micelles when they are dragged past each other. The lipid-lipid and lipid-water interactions are taken from a coarse-grained model first introduced by Marrink et al. This work focuses on shape changes upon mutual interaction of micelles when dragged with constant velocity. We find that micelles can change their shapes from spherical to cylindrical regardless of the number of constituting lipids. We address this result toward understanding facilitated vs. obstructed lubrication of articular cartilage by synovial fluid at nanoscale level.

Źródło:

Acta Physica Polonica A; 2016, 129, 2; 188-189
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 68.

Tytuł:

Optical and Structural Characterization of Zinc Oxide Nanostructures Obtained by Atomic Layer Deposition Method

Autorzy:

Wachnicki, Ł.
Witkowski, B.
Gierałtowska, S.
Kopalko, K.
Godlewski, M.
Guziewicz, E.

Powiązania:

https://bibliotekanauki.pl/articles/1492916.pdf

Data publikacji:

2011-11

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

81.07.Bc
82.47.Rs
68.55.-a
81.15.Aa

Opis:

Zinc oxide is a II-VI semiconductor material which is gaining increasing interest in various fields such as biology, medicine or electronics. This semiconductor reveals very special physical and chemical properties, which imply many applications including a transparent electrode in solar cells or LED diodes. Among many applications, ZnO is also a prospective material for sensor technology, where developed surface morphology is very advantageous. In this work we present ZnO nanowires growth using atomic layer deposition method. ZnO nanowires were obtained using controlled physical properties. As a substrate we used gallium arsenide with gold-gallium eutectic droplets prepared on the surface at high temperature. To obtain the eutectic solution there was put a gold thin film on GaAs through the sputtering and then we annealed the sample in a nitrogen gas flow. The so-prepared substrate was applied for growth of ZnO nanowires. We used deionized water and zinc chloride as oxygen and zinc precursors, respectively. The eutectic mixture serves as a catalyst for the ZnO nanowires growth. Au-Ga droplets flow on the front of ZnO nanowires. Scanning electron microscopy images show ZnO nanorods in a form of crystallites of up to 1 μm length and a 100 nm diameter. It is the first demonstration of the ZnO nanowires growth by atomic layer deposition using the vapour-liquid-solid approach.

Źródło:

Acta Physica Polonica A; 2011, 120, 5; 905-907
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 69.

Tytuł:

Room-Temperature Ferromagnetism in Zn-Mn-O, X-Ray Photoemission Surface Study

Autorzy:

Milivojević, D.
Babić-Stojić, B.
Blanuša, J.
Kovač, J.

Powiązania:

https://bibliotekanauki.pl/articles/1503685.pdf

Data publikacji:

2011-08

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

75.50.Pp
81.40.Rs
81.70.Jb
82.80.Pv

Opis:

Room temperature ferromagnetic properties of Zn-Mn-O show evident dependence on manganese concentration and preparation conditions. We systematically studied series of samples with manganese concentration ranging from 0 to 10 at.%, prepared in air at thermal treatment temperatures ranging from 400 to 900°C. The samples were investigated by X-ray diffraction, TEM, magnetization measurements and XPS spectroscopy. XPS analyses of surface composition, chemical bonding and XPS depth profiling were successfully employed on powder revealing the chemical composition at the surface of the grains and underneath. The study emphasizes important role of the grain surface in observed room temperature ferromagnetism. It seems that the ferromagnetic phase is correlated with oxygen build up at the surface.

Źródło:

Acta Physica Polonica A; 2011, 120, 2; 311-315
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 70.

Tytuł:

Electrical, Surface Morphology and Magneto-Capacitance Properties of Pb Free Multiferroic $(BiFeO_{3})_{1-x}(BaTiO_{3})_{x}$ Solid Solutions

Autorzy:

Shariq, M.
Kaur, D.
Chandel, V.
Siddiqui, M.

Powiązania:

https://bibliotekanauki.pl/articles/1400512.pdf

Data publikacji:

2015-06

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

78.20.Ci
81.05.Je
81.40.Rs
68.37.Yz

Opis:

The solid solutions ($BiFeO_{3})_{1-x}(BaTiO_{3})_{x}$ (x=0, 0.1, 0.2, 0.3, 0.4, and 0.5) have been synthesized adopting a solid state sintering route. Well crystalline phase of ($BiFeO_{3})_{1-x}(BaTiO_{3})_{x}$ ceramics at different level of x has been optimized at sintering temperature of 950°C for 2 h. Dielectric, polarization and magnetocapacitance properties were investigated for different content level of $BaTiO_{3}$. Dielectric constant increased with increasing concentration of $BaTiO_{3}$ up to x=0.3 for all the frequencies of 10, 100, and 1000 kHz. Dielectric loss in the material is attributed to space charges, interfacial and dipolar polarizations. Measurements of P-E loop indicated evident ferroelectricity in all samples. Well formed grain with varying grain sizes and nearly uniform shape was found for ceramics samples.

Źródło:

Acta Physica Polonica A; 2015, 127, 6; 1675-1680
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 71.

Tytuł:

High Temperature Oxidation of Spark Plasma Sintered and Thermally Sprayed FeAl-Based Iron Aluminides

Autorzy:

Haušild, P.
Karlík, M.
Skiba, T.
Sajdl, P.
Dubský, J.
Palm, M.

Powiązania:

https://bibliotekanauki.pl/articles/1418442.pdf

Data publikacji:

2012-09

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

81.05.Bx
81.65.Mq
81.20.Ev
81.15.Rs

Opis:

The presented work deals with the oxidation resistance of spark plasma sintered and thermally sprayed FeAl-based intermetallics. Gas-atomized binary single phase Fe-43(at.%)Al and dual phase Fe-55(at.%)Al powders were used for spark plasma sintering and/or thermal spraying. Coatings were deposited by two different plasma spray technologies - gas and water stabilized plasma guns. The prepared samples were exposed to oxidation in artificial air at 700°C. The mass gain was measured during oxidation at 700C up to 1000 h. Microstructures, phase and chemical compositions of the formed scales were characterized after the exposition by means of scanning electron microscopy, X-ray diffraction and electron spectroscopy for chemical analysis (X-ray photoelectron spectroscopy).

Źródło:

Acta Physica Polonica A; 2012, 122, 3; 465-468
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 72.

Tytuł:

Investigations and Applications of Nanoperm-Type Soft Magnetic Materials

Autorzy:

Hasiak, M.
Łukiewski, M.
Miglierini, M.
Kaleta, J.

Powiązania:

https://bibliotekanauki.pl/articles/1534084.pdf

Data publikacji:

2010-11

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

81.05.Kf
81.07.Bc
81.40.Rs
85.70.Ay

Opis:

The microstructure and magnetic properties of $Fe_{82}Zr_4Nb_3B_{10}Cu_1,$ $Fe_{80}Zr_4Mn_3B_{12}Cu_1$ and $Fe_{80}Zr_4Ti_3Cu_1B_{12}$ alloys were investigated. Using RALE software the basic parameters of transformers made from nanocrystalline alloys with about 25% and 50% of crystalline phase were calculated. The transformer made from $Fe_{80}Zr_4Ti_3Cu_1B_{12}$ alloys after annealing at 773 K for 1-shows the lowest core losses and highest efficiency.

Źródło:

Acta Physica Polonica A; 2010, 118, 5; 829-831
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 73.

Tytuł:

The Interaction of Water with Glycine: A Combined Inelastic Neutron Scattering and Raman Spectra Studies

Autorzy:

Zhang, P.
Zhang, Y.
Han, S.
Yan, Q.
Li, J.

Powiązania:

https://bibliotekanauki.pl/articles/2044762.pdf

Data publikacji:

2006-03

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

36.20.Ng
87.64.Je
25.40.Fq
82.30.Rs

Opis:

The vibrational dynamics of water around glycine was investigated by using Raman spectroscopy and inelastic neutron scattering. Experiments of deuterated glycine versus deuterium were performed as comparison. The study shows that for glycine, the exchange of proton-deuteron on the active NH$\text{}_{3}^{+}$ side was easy, whereas there was hardly exchange on the CH$\text{}_{2}$ side. Comparing different proportion of glycine vs. water molecules we obtained that the presence of water hardly changes the main features of glycine illustrating its hydrophobic character. The intralayer hydrogen bonds of glycine crystal are difficult to be replaced due to its stronger bond than water.

Źródło:

Acta Physica Polonica A; 2006, 109, 3; 399-404
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 74.

Tytuł:

Dielectric Relaxation in Hydrogen Bonded Urea-Based Supramolecular Polymer N,N-di(2,2-dipentylheptyl)urea

Autorzy:

Jadżyn, J.
Bouteiller, L.
Déjardin, J.-L.
Czechowski, G.

Powiązania:

https://bibliotekanauki.pl/articles/2047092.pdf

Data publikacji:

2006-10

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

61.82.Pv
77.22.Gm
81.16.Fg
82.30.Rs

Opis:

Results of the dielectric relaxation studies, performed for supramolecular polymer formed by N,N'-di(2,2-dipentylheptyl)urea dissolved in carbon tetrachloride, are presented. The measurements were done for N,N'-di(2,2-dipentylheptyl)urea concentration up to about 7% (in mole fraction) in the frequency region from 100 kHz to 100 MHz and at the temperatures from 5ºC to 50ºC. The analysis of the experimental data were performed with the Havriliak-Negami equation. In the studied range of N,N'-di(2,2-dipentylheptyl)urea concentration and temperature, the obtained values of exponentsα andβ of the Havriliak-Negami equation are equal to 0.9±0.1 and 0.7±0.1, respectively, showing an anomaly in the dielectric relaxation behavior close to the Davidson-Cole type. Two examples of the modeling of dielectric properties of the supramolecular polymer solutions were presented.

Źródło:

Acta Physica Polonica A; 2006, 110, 4; 495-504
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 75.

Tytuł:

Problem rasizmu i dyskryminacji rasowej na polskich stadionach z perspektywy studentów przyszłych nauczycieli wychowania fizycznego
The problem of racism and racial discrimination in polish stadiums from the perspective of physical education students, the future teachers

Autorzy:

Sztejnberg, Aleksander
Jasiński, Tadeusz

Powiązania:

https://bibliotekanauki.pl/articles/2138873.pdf

Data publikacji:

2017-07-12

Wydawca:

Wydawnictwo Naukowe Dolnośląskiej Szkoły Wyższej

Tematy:

formy rasizmu i  dyskryminacji rasowej
kwestionariusz „Rasizm stadionowy – RS”
opinie studentów
studenci wychowania fizycznego
forms of racism and racial discrimination
questionnaire „Stadium Racism – RS”
students’ opinions
physical education students

Opis:

W  pracy zaprezentowano wyniki z  badania, którego celem było rozpoznanieopinii studentów wychowania fizycznego wobec form rasizmu i  dyskryminacjirasowej, przejawianych przez kibiców. Dla jego realizacji, na  podstawieanalizy literatury przedmiotu, opracowano kwestionariusz „Rasizm stadionowy”,który pozwolił, w miarę całościowo, opisać poglądy studentów, przyszłych nauczycieli,o znanych z praktyki formach rasizmu i dyskryminacji rasowej, przejawianychprzez kibiców na stadionach. Wśród nich były powszechnie uważane za obelżyweprzyśpiewki, piosenki, okrzyki, skandowania, naklejki, napisy oraz symbole eksponowanena transparentach i flagach. Starano się rozpoznać psychologiczne wartościstudentów w kategoriach obraźliwe/nieobraźliwe, przynoszące wstyd Polsce/klubowipiłkarskiemu oraz akceptację przez nich mowy nienawiści, przyjmując eksponowanieróżnych form rasizmu i dyskryminacji rasowej przez kibiców jako pomysłowe.Analiza zebranych danych ukazała sprzeciw większości studentów, przyszłych nauczycieliwychowania fizycznego, wobec przejawów ksenofobii, rasizmu i dyskrymi-nacji na polskich stadionach. Przejawianie takich zachowań dla około 60% badanychjest niedopuszczalne, albowiem przynoszą one wstyd Polsce i  klubom piłkarskim.Zaobserwowane różnice w opiniach studentów i studentek były zauważalne (na niekorzyśćstudentów), aczkolwiek nieistotne statystycznie. Uzyskane wyniki mogą byćwykorzystane w praktyce kształcenia przyszłych nauczycieli nie tylko wychowaniafizycznego, w  realizacji zadań, dotyczących przygotowania ucznia do  roli kibica,i manifestowania akceptowanych społecznie zachowań podczas imprez sportowych.
This article presents the results of study with the aim of recognizing physicaleducation students’ opinions in relation to racism and racial forms of discriminationdisplayed by fans. To realize this aim, the questionnaire „Stadium Racism – RS”was constructed on basis of analysis of literature. That made it possible just enough asa whole, to describe students’ opinion, the future teachers, about well-known formsof racism and racial discrimination displayed by fans at stadiums, namely abusivesongs, shouts, chanting, stickers, inscriptions, and symbols on banners and flags. Theauthors of the article have tried to recognize students’ psychological values in offensive/non-offensivecategories, bringing shame on Poland or the football club, as wellas their approval of hate speech, accepting forms of racism and racial discriminationby fans as inventive. The analysis of the data gathered showed the opposition of a majority of physical education students, the future teachers, toward signs of xenophobia,and to racism and discrimination in Polish stadiums. For about 60 percent of thestudents, such behaviors are unacceptable because they bring the shame on Polandand the football clubs. Observed differences in male and female students’ opinionswere perceptible (to  the male students’ disadvantage), if statistically unimportant.Achieved results may be used in practice educating future teachers, not only of physicaleducation, in the execution of tasks concerning preparing primary and secondaryeducation students for the role of fans and manifesting accepted socially behaviorsduring sports parties.

Źródło:

Forum Oświatowe; 2017, 29, 1(57); 167-184
0867-0323
2450-3452

Pojawia się w:

Forum Oświatowe

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 76.

Tytuł:

Phaseone 190 MP aerial system: camera design principles and productivity analysis
Lotniczy system 190 MP: konstrukcja kamery i analiza jej wydajności

Autorzy:

Raizman, Y.

Powiązania:

https://bibliotekanauki.pl/articles/130054.pdf

Data publikacji:

2017

Wydawca:

Stowarzyszenie Geodetów Polskich

Tematy:

kamera średnioformatowa
wydajność
Phase One
CMOS
iXU-RS190
medium format camera
productivity

Opis:

Phase One next generation iXU-RS1900 aerial system is based on 100MP medium format camera. It comprises two 90 mm lenses and two CMOS image sensors with pixel size of 4.6 μm shifted outward according to the optical axis of the lenses. Each lens is vertically oriented, providing nadir images with an equal ground resolution. The two stitched images form a large frame with 16,470 pixels across the flight line and 11,570 pixels along the flight providing 190 MP image. The total FOV across flight line is 45.7 deg and FOV along flight line is 33 deg. Productivity analysis for aerial survey cameras may be expressed as an aerial survey productivity (image coverage per hour of flight), distance between flight lines, time required to fly AOI (Area of Interest), or number of flight lines per AOI. The new iXU-RS1900 camera enables an increase in the distance between flight lines and improves aerial survey productivity by 43%. It needs only 34 min of flight to cover the central area of most cities in Europe. Thus, with the new CMOS sensor and short exposure time, high quality aerial imagery may be reached without using an FMC technique.
Kamera lotnicza nowej generacji firmy Phase One iXU-RS190 bazuje na kamerze średnioformatowej 100MP. Łączy dwa obiektywy 90 mm i dwa przetworniki obrazu CMOS z pikselem 4.6 m, przesunięte na zewnątrz względem osi obiektywów. Każdy obiektyw ma pionowo zorientowaną oś, co daje jednakową rozdzielczość terenową zdjęć. Dwa połączone obrazy tworzą kadr o 16 470 pikselach w poprzek i 11 570 pikselach wzdłuż lotu, łącznie o rozdzielczości 190 Mpix. Odpowiada to kątom widzenia 45.7 i 33 odpowiednio w poprzek i wzdłuż lotu. Analiza wydajności kamer lotniczych może być wyrażana jako wydajność obrazowania (powierzchnia kryta zdjęcia na godzinę lotu), odległość między szeregami, czas lotu konieczny na pokrycie obszaru zainteresowania, czy liczbą szeregów na takim obszarze. Nowa kamera iXU-RS190 umożliwia zwiększenie odległości między szeregami i poprawia wydajność o 43%. Potrzebuje tylko 34 minuty lotu na pokrycie centralnej części większości miast europejskich. Z nowym przetwornikiem CMOS i krótkimi ekspozycjami wysoka jakość zdjęć lotniczych może być osiągnięta bez konieczności stosowania technik kompensacji rozmazania (FMC).

Źródło:

Archiwum Fotogrametrii, Kartografii i Teledetekcji; 2017, 29; 137-146
2083-2214
2391-9477

Pojawia się w:

Archiwum Fotogrametrii, Kartografii i Teledetekcji

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 77.

Tytuł:

Geospatial Applicationsin Land Use/Land Cover Change Detection for Sustainable Regional Development:The Case of Central Haryana, India

Autorzy:

Kumar, Surender
Singh, Ripudaman

Powiązania:

https://bibliotekanauki.pl/articles/1838027.pdf

Data publikacji:

2021

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

geospatial
India
land use
land cover
RS-GIS
sustainable regional development
thematic change

Opis:

Timely and accurate detection of land use/land cover (LULC) change is important for the macro and micro level sustainable development of any region. For this purpose, geospatial techniques are the best tool for change analysis as they supply timely, cheaper, precise and up to date information. This paper examines the spatial temporal change trend in LULC in the case of Central Haryana. Landsat 2, 3, 5, 7 and 8 images for the years 1975–2020 for pre and post monsoon periods were analyzed for the study. Radiometric correction was performed to derive better information. ArcGIS 10.2 and ENVI 5.3 are used for thematic layout and thematic change preparation. An unsupervised classification using ERDAS IMAGINE 2015 has also been done to classify study area in eight classes. The year 1975 is considered as the base year for change detection analysis. Results showed an increasing trend for the land use classes of built up, water body, and agricultural land without waterlogging in the pre and post monsoon periods between 1975 and 2020. Remaining land use classes of agriculture with waterlogging, open waterlogged area, vegetation and fallow land/sand dunes decreased during the same period. Increased human activities have changed the LULC in the region and have had a great impact on its sustainable regional development.

Źródło:

Geomatics and Environmental Engineering; 2021, 15, 3; 81-98
1898-1135

Pojawia się w:

Geomatics and Environmental Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 78.

Tytuł:

Identification of 1bl/1rs translocation in interspecific hybrids between Aegilops and Triticum.

Autorzy:

Tyrka, Mirosław
Stefanowska, Grażyna
Tarkowski, Czesław

Powiązania:

https://bibliotekanauki.pl/articles/2198846.pdf

Data publikacji:

2002-12-22

Wydawca:

Instytut Hodowli i Aklimatyzacji Roślin

Tematy:

1BL/1RS translocation
Aegilops spp.
STS-PCR
Triticum durum
Triticum aestivum

Opis:

The aim of studies was testing for presence of 1BL/1RS translocation in 17 lines derived from wide crosses of Aegilops ventricosa and Aegilops juvenalis with common and durum wheats, along with parental forms. PCR analyses detected translocated chromosome in Lanca and CZR1406 wheats and in 4 hybrid lines (JCPC, JCCP, JCC and JCCC). The lack of 1RS arm in lines (VGL and VGLL) derived from crosses with Lanca suggests that another chromosomal rearrangements occurred. We confirmed the usefulness of applied STS-PCR assays for fast and robust identification of 1BL/1RS translocation in breeding materials.

Źródło:

Plant Breeding and Seed Science; 2002, 46, 2; 37-43
1429-3862
2083-599X

Pojawia się w:

Plant Breeding and Seed Science

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 79.

Tytuł:

System pomiarowy typu Master-Slave z bezprzewodowymi układami akwizycji danych typu Smart Sensor o wejściu napięciowym
Master-Slave measurement system, based on wireless Smart Sensor data acquisition modules with a voltage input

Autorzy:

Szweda, D.
Kciuk, M.

Powiązania:

https://bibliotekanauki.pl/articles/152246.pdf

Data publikacji:

2014

Wydawca:

Stowarzyszenie Inżynierów i Techników Mechaników Polskich

Tematy:

karta DAQ
brama sieciowa
urządzenie Master
urządzenie Slave
ISM
obiekt pomiarowy
terminal
RS232
SMART SENSOR
DAQ card
network gateway
device Master
device Slave
object of measurement
RS-232
smart sensor

Opis:

Artykuł przedstawia bezprzewodowy system pomiarowy, złożony z kart akwizycji danych o wejściu napięciowym, opracowany na potrzeby pracy magisterskiej. Zadaniem systemu jest akwizycja, archiwizacja, monitorowanie oraz przesyłanie danych pomiarowych z urządzenia Slave do Master. Urządzenia akwizycyjne zostały wykonane jako urządzenia typu SMART SENSOR. Opracowany system pomiarowy został zastosowany do akwizycji danych w systemie odzyskiwania energii z otwieranych i zamykanych drzwi.
This paper presents wireless measurement system, consist of a data acquisition cards with voltage inputs, developed as the MSc thesis. The purpose of the system is acquisition, archiving, monitoring and transfer measurement data from the slave device to the master device (Fig. 1). Acquisition cards has been made as a SMART SENSOR device (Fig. 2). Data acquisition card is a slave module in the measurement system. It allows to acquire the measurement data with maximum 8 inputs with adjustable delay time between the measurements. The data can be saved to a SD card, and sent by radio in the ISM band (Fig. 3). DAQ card configuration is done by a terminal application located on PC (Fig. 4). The network gateway consists of a manager, a user interface module (Fig. 5), the power module and converter UART / USB. Developed measurement system has been used as the data acquisition system in recover energy from opening and closing door circuit. The short measurement series were done for acquiring voltage (Fig. 6) and current (Fig. 7) when movement of the door was forced. Long acquisition series were done as well (Fig. 8). The long series took four days during typical office use. The measurement system can be used for monitoring various types of physical quantities by means of appropriate sensors and output voltage. Applied Gateway may be part of the monitoring and control of data acquisition DAQ cards used in the measurements.

Źródło:

Pomiary Automatyka Kontrola; 2014, R. 60, nr 11, 11; 1029-1032
0032-4140

Pojawia się w:

Pomiary Automatyka Kontrola

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 80.

Tytuł:

Nieinwazyjne badania spektroskopowe rysunków Szymona Czechowicza i jego uczniów
Non-invasive spectroscope analysis of sketches by Szymon Czechowicz and his students

Autorzy:

Doleżyńska-Sewerniak, Ewa
Jendrzejewski, Rafał
Klisińska-Kopacz, Anna

Powiązania:

https://bibliotekanauki.pl/articles/217619.pdf

Data publikacji:

2019

Wydawca:

Stowarzyszenie Konserwatorów Zabytków

Tematy:

Szymon Czechowicz
warsztat artysty w XVIII wieku
identyfikacja narzędzi rysunkowych
badania nieinwazyjne
RS
XRF
NIR
IRFC
an artist’s kit in the 18th century
identification of drawing tools
non-invasive research RS

Opis:

Badania przedstawione w niniejszej pracy miały na celu scharakteryzowanie narzędzi rysunkowych stosowanych w warsztacie Szymona Czechowicza (1689–1775). Badaniom poddano 41 prac pochodzących ze zbiorów Muzeum Uniwersytetu Jagiellońskiego, Muzeum Narodowego w Krakowie oraz Muzeum Narodowego w Warszawie. Rysunki były badane za pomocą technik nieinwazyjnych, takich jak spektroskopia Ramana (RS), spektroskopia fluorescencji rentgenowskiej (XRF), technika „fałszywych kolorów” (IRFC) oraz bliska podczerwień (NIR). Trzy próbki poddano również energodyspersyjnej mikroanalizie rentgenowskiej (SEM-EDS). Badania pozwoliły na analizę składu chemicznego linii rysunków oraz rozpoznanie wśród narzędzi rysunkowych: sangwiny oraz czerwonej kredki składającej się z czerwonej ochry, minii oraz białych wypełniaczy w postaci kredy i gipsu, sepii, bistru, czarnego tuszu węglowego, ołówka grafitowego, węgla a także czarnej kredki (z czerni kostnej). Zidentyfikowane materiały są charakterystyczne dla XVIII wieku oraz obszarów geograficznych, na jakich artysta działał. Wyniki przeprowadzonych badań mogą być wykorzystywane do porównań z innymi szkicami przypisywanymi malarzowi w celu weryfikacji ich atrybucji.
The research presented in this study was to characterise the drawing tools used by Szymon Czechowicz (1689–1775). 41 works from the collections of the Jagiellonian University Museum, the National Museum in Krakow and the National Museum in Warsaw were analysed. The sketches were examined using the non-invasive technologies such as: Raman spectroscopy (RS), x-ray fluorescence spectroscopy (XRF), infrared false colour (IRFC) and near-infrared (NIR). Three samples also underwent Energy Dispersive Xray microanalysis (SEM-EDS). The research allowed for analysing the chemical content of drawing lines and identifying the following among drawing tools: sanguine and a red crayon consisting of red ochre, red lead and white fillers such as chalk and gypsum, sepia, bistre, carbon-based black ink, lead pencil, charcoal and ivory black (bone char). The identified materials are typical for the 18ᵗʰ century and the geographical areas in which the artist worked. The results of the carried out research can be used for comparison with other sketches attributed to the painter in order to verify the claims.

Źródło:

Wiadomości Konserwatorskie; 2019, 59; 133-144
0860-2395
2544-8870

Pojawia się w:

Wiadomości Konserwatorskie

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 81.

Tytuł:

Association between UBE2E2 variant rs7612463 and type 2 diabetes mellitus in a Chinese Han Population

Autorzy:

Kazakova, Elena
Wu, Yanhui
Zhou, Zhongyu
Chen, Meijun
Wang, Tongtong
Tong, Huixin
Zhuang, Tianwei
Sun, Lulu
Qiao, Hong

Powiązania:

https://bibliotekanauki.pl/articles/1039098.pdf

Data publikacji:

2015

Wydawca:

Polskie Towarzystwo Biochemiczne

Tematy:

Type 2 diabetes mellitus
UBE2E2
rs7612463
Single nucleotide polymorphism
SNPscan

Opis:

UBE2E2 encodes ubiquitin-conjugating enzyme E2E2, which plays an important role in the synthesis and secretion of insulin. Two previous studies indicated that SNPs in UBE2E2 were associated with risk for type 2 diabetes mellitus (T2DM) in the Japanese and Korean populations, respectively. We examined the association of one SNP in this gene, rs7612463, with the risk of T2DM in 1957 Han participants in northeastern China, using an SNPscanTM Kit. rs7612463 genotype was significantly associated with risk for T2DM under various genetic models, including an additive model (P = 0.004), a dominant model (P = 0.024), and a recessive model (P = 0.008). The AA genotype was associated with a significantly decreased risk for T2DM (P = 0.004, OR = 0.513, 95% CI = 0.325-0.810) after adjustment for age, gender, and BMI. The heterozygous genotype, AC, was associated with increased risk for total cholesterol (mmol l-1; P = 0.031) and triglycerides (mmol l-1; P = 0.039) in control individuals. Our results show that rs7612463 is associated with T2DM, with homozygotes of the AA genotype at decreased risk for T2DM in the Chinese population. Additionally, heterozygotes may have decreased risk of T2DM due to insulin resistance.

Źródło:

Acta Biochimica Polonica; 2015, 62, 2; 241-245
0001-527X

Pojawia się w:

Acta Biochimica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 82.

Tytuł:

Lean principles for organizing items in an automated storage and retrieval system: an association rule mining – based approach

Autorzy:

Bevilacqua, Maurizio
Ciarapica, Filippo Emanuele
Antomarioni, Sara

Powiązania:

https://bibliotekanauki.pl/articles/407183.pdf

Data publikacji:

2019

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

lean management
AS/RS
Association Rules
Data Mining
Industry 4.0
5S
shoe manufacturing

Opis:

The application of the 5S methodology to warehouse management represents an important step for all manufacturing companies, especially for managing products that consist of a large number of components. Moreover, from a lean production point of view, inventory management requires a reduction in inventory wastes in terms of costs, quantities and time of non-added value tasks. Moving towards an Industry 4.0 environment, a deeper understanding of data provided by production processes and supply chain operations is needed: the application of Data Mining techniques can provide valuable support in such an objective. In this context, a procedure aiming at reducing the number and the duration of picking processes in an Automated Storage and Retrieval System. Association Rule Mining is applied for reducing time wasted during the storage and retrieval activities of components and finished products, pursuing the space and material management philosophy expressed by the 5S methodology. The first step of the proposed procedure requires the evaluation of the picking frequency for each component. Historical data are analyzed to extract the association rules describing the sets of components frequently belonging to the same order. Then, the allocation of items in the Automated Storage and Retrieval System is performed considering (a) the association degree, i.e., the confidence of the rule, between the components under analysis and (b) the spatial availability. The main contribution of this work is the development of a versatile procedure for eliminating time waste in the picking processes from an AS/RS. A real-life example of a manufacturing company is also presented to explain the proposed procedure, as well as further research development worthy of investigation.

Źródło:

Management and Production Engineering Review; 2019, 10, 1; 29-36
2080-8208
2082-1344

Pojawia się w:

Management and Production Engineering Review

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 83.

Tytuł:

Deformation microstructures in metallic materials after severe plastic deformation by rolling with cyclic movement of rolls

Autorzy:

Urbańczyk-Gucwa, A.
Bednarczyk, I.
Jabłońska, M.
Rodak, K.

Powiązania:

https://bibliotekanauki.pl/articles/1075888.pdf

Data publikacji:

2016-10

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

62.20.F-
61.72.Ff
81.05.Bx
81.40.Rs
83.50.-v

Opis:

The results of the microstructure investigations of the pure Al and AlMg5 alloy and pure Cu and CuFe2 alloy after the application of severe plastic deformation implemented by rolling with the cyclic movement of the rolls are presented in this paper. The rolling with the cyclic movement of the rolls was carried out at values: the rolling rate v=1 rpm, the frequency of rolls movement f=1 Hz, the amplitude of rolls movement A=1.6 mm. Maximal values of rolling reduction at 6 passes was ε_{h}=80%. The structure of the these materials was analyzed using scanning transmission electron microscope. The quantitative studies of the substructure was performed with MET-ILO software, on the basis of images acquired on scanning transmission electron microscope. Performed substructure investigations showed that using the rolling with the cyclic movement of the rolls method can refine the microstructure of these materials to the ultrafine scale.

Źródło:

Acta Physica Polonica A; 2016, 130, 4; 975-978
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 84.

Tytuł:

Heat treatment of CuFe2 and CuCr0.6 alloys and the effect of precipitates on the grain refinement

Autorzy:

Urbańczyk-Gucwa, A.
Amrogowicz, P.
Jabłońska, M.
Rodak, K.

Powiązania:

https://bibliotekanauki.pl/articles/1075903.pdf

Data publikacji:

2016-10

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

81.40.Gh
62.20.F-
61.72.Ff
81.05.Bx
81.40.Rs

Opis:

The results of microstructure and hardness investigations of the CuFe2 and CuCr0.6 alloys after solution and ageing treatment are presented in this paper. The variants of heat treatment as: solution at 1000°C per 3 h and ageing treatment at 500°C for 2 h and at 700°C for 24 h were chosen for severe plastic deformation process realized by rolling with the cyclic movement of rolls method. The structure of CuFe2 and CuCr0.6 alloys was analysed using scanning transmission electron microscopy, and the quantitative studies of the substructure was performed with MET-ILO software, on the basis of images acquired on scanning transmission electron microscope.

Źródło:

Acta Physica Polonica A; 2016, 130, 4; 1016-1019
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 85.

Tytuł:

Effect of Boric Acid Content on the Structural and Optical Properties of MnS Films Prepared by Spray Pyrolysis Technique

Autorzy:

Bedır, M.
Öztaş, M.
Çelik, S.
Özdemır, T.

Powiązania:

https://bibliotekanauki.pl/articles/1205283.pdf

Data publikacji:

2014-08

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

81.15.Rs
78.28.-e
61.72.Vv
61.05.cp
68.55.Jk

Opis:

Boron doped MnS films were obtained by the spray pyrolysis method using the boric acid ($H_3BO_3$) as dopant source at a substrate temperature of 350°C. The spray pyrolysis method has a wide range of application areas with a low cost well-suited for the manufacture of solar cells. The properties of boron doped MnS films were investigated as a function of doping concentration. The X-ray analysis showed that the films were polycrystalline fitting well with a hexagonal structure and have preferred orientation in the [002] direction. The optical band gap of the undoped and boron doped MnS films were found to vary from 3.38 to 3.20 eV. The changes observed in the energy band gap and structural properties of the films related to the boric acid concentration are discussed in detail.

Źródło:

Acta Physica Polonica A; 2014, 126, 3; 840-844
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 86.

Tytuł:

Effect of rolling with cyclic movement of rolls method on structure and hardness of CuCr0.6 alloy

Autorzy:

Rodak, K.
Urbańczyk-Gucwa, A.
Radwański, K.

Powiązania:

https://bibliotekanauki.pl/articles/1058106.pdf

Data publikacji:

2016-10

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

62.20.F-
61.72.Ff
81.05.Bx
81.40.Rs
83.50.-v

Opis:

A novel severe plastic deformation method entitled rolling with cyclic movement of rolls was proposed to fabricate ultrafine grained CuCr0.6 copper alloy. The alloy in the solution treated conditions was processed by rolling with cyclic movement of rolls method by using process parameters as amplitude of rolls movement (A = 0.9 mm), frequency of rolls movement (f = 1 Hz), rolling reduction (ε_{h} = 50%) and rolling rate (v = 1, v = 2, v = 3 rpm). Light microscopy, scanning electron microscopy and a electron backscattering diffraction detector, and scanning transmission electron microscopy were used for microstructural characterization, and hardness tests for a preliminary assessment of mechanical properties. Quantitative studies of the average diameter of the subgrains d (μm) and the average diameter of the grains D (μm) were performed using the scanning electron microscopy/electron backscattering diffraction method. Misorientation angles were analyzed by the Kikuchi-line technique using TSL-OIM software. The results show that the samples underwent very high strain at the lateral areas and smaller at the central areas. As a result, the microstructure became heterogeneous and remained unchanged with change in compression rate. The transverse movement of rolls causes in the material significant effect of refining structure in peripheral areas of sample.

Źródło:

Acta Physica Polonica A; 2016, 130, 4; 1151-1154
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 87.

Tytuł:

Photoelectrical Behaviour of DNA:PEDT-PSS Functionalised Films

Autorzy:

Kažukauskas, V.
Pranaitis, M.
Krupka, O.
Sahraoui, B.

Powiązania:

https://bibliotekanauki.pl/articles/1505488.pdf

Data publikacji:

2011-02

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

73.50.Gr
81.40.Rs
81.40.Tv
87.85.jc
87.14.gk

Opis:

We report investigations of functionalized DNA:PEDT-PSS films. The thermal activation energy of the conductivity near the room temperature was about 0.033 eV. The weak carrier trapping was identified by the thermally stimulated current method, proving the fast recombination of light-generated carriers. A "bistable" photoconductivity below the room temperature was evidenced upon the white light excitation. By cooling the samples down to 145-155 K the photoconduction was small. Below this temperature sudden increase of the photoconductivity was observed. Meanwhile by heating the photosensitivity remained enhanced up to 235-245 K. The slow relaxations of the current after the light excitation took place, the time constant of which reached several hundreds of seconds. Such phenomenon could presumably be attributed to the light-induced changes of the sample material morphology and/or associated variation of carrier transport conditions.

Źródło:

Acta Physica Polonica A; 2011, 119, 2; 151-153
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 88.

Tytuł:

NdFeB Permanent Magnets with Various Nd Content

Autorzy:

Žák, T.
Talijan, N.
Ćosović, V.
Grujić, A.

Powiązania:

https://bibliotekanauki.pl/articles/1813649.pdf

Data publikacji:

2008-01

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

61.05.cp
76.80.+y
75.50.-y
81.07.-b
81.40.Rs

Opis:

Three kinds of commercial Nd-Fe-B based materials were compared using $\text{}^{57}Fe$ Mössbauer spectroscopy and X-ray analysis: near the $Nd_2Fe_{14}B$ stoichiometry and with both lowered and raised Nd content. Magnetically hard $Nd_2Fe_{14}B$ is present in all three materials. In the Nd-low material it is accompanied with the magnetically soft $Fe_3B$ phase, building the nanocomposite structure. In the Nd-rich sample the overstoichiometric Nd atoms seem to build separate phase of Fe-Nd solid solution. None of the materials contain significant content of phases degrading magnetic characteristics, with except of minor $Nd_{1.1}Fe_4B_4$ one.

Źródło:

Acta Physica Polonica A; 2008, 113, 1; 279-282
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 89.

Tytuł:

Effect of Heat Treatment on the ac Conductivity and Dielectric Properties of Ag$\text{}_{33}$Sb$\text{}_{31}$Se$\text{}_{36}$ Thin Films

Autorzy:

Abd El-Wahabb, E.

Powiązania:

https://bibliotekanauki.pl/articles/2044570.pdf

Data publikacji:

2005-12

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

73.61.-r
77.55.+f
81.40.Rs
81.40.Tv
81.40.Ef

Opis:

The effect of heat treatment on the ac conductivity and dielectric properties of the melt quenched and thermally evaporated Ag$\text{}_{33}$Sb$\text{}_{31}$Se$\text{}_{36}$ chalcogenide system are reported for the first time. The results of the alternating current conductivity σ$\text{}_{ac}$, the dielectric constantε$\text{}_{1}$, and the dielectric lossε$\text{}_{2}$ of the Ag$\text{}_{33}$Sb$\text{}_{31}$Se$\text{}_{36}$ thin film samples are presented over the temperature range 303-373 K and the frequency range 0.1-100 kHz. The temperature dependence of the ac conductivity σ$\text{}_{ac}$(ω) and the frequency exponent s are discussed with the aim of the correlated barrier hopping model. Values of σ$\text{}_{ac}$(ω),ε$\text{}_{1}$, and ε$\text{}_{2}$ were found to increase with the increase in the annealing temperature due to the reduction of the number of unsaturated defects which decrease the density of localized states in the band structure.

Źródło:

Acta Physica Polonica A; 2005, 108, 6; 985-996
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 90.

Tytuł:

Application of Plano RS software in a farm
Zastosowanie programu Plano RS w gospodarstwie rolnym

Autorzy:

Borusiewicz, A.
Kapela, K.

Powiązania:

https://bibliotekanauki.pl/articles/93459.pdf

Data publikacji:

2014

Wydawca:

Polskie Towarzystwo Inżynierii Rolniczej

Tematy:

Plano RS
fertilization
computer farming software
agri-environmental scheme
nawożenie
komputerowa aplikacja rolnicza
program rolnośrodowiskowy

Opis:

The paper presents evaluation of Plano RS software used in a farm that is covered with agri-environmental scheme. The objective of the research was to check to what extent Plano RS software influences the process of defining quantity of fertilizers necessary in a farm. Wide spectrum of the program, its common availability, and the fact it is user-friendly, allows even people with basic knowledge of computers to use Plano RS software as an effective tool supporting their decisions. Using Plano RS software, a farmer is able to define quantities of fertilizers that should be applied in a farm, crosscheck manual calculations.
W pracy przedstawiono ocenę działania programu Plano RS wykorzystywanego w gospodarstwie rolnym objętym programem rolnośrodowiskowym. Badanie miało na celu sprawdzenie, w jakim stopniu program Plano RS wypływa na określenie ilości stosowania niezbędnych nawozów w gospodarstwie. Wszechstronność programu, jego powszechna dostępność oraz łatwość obsługi, pozwala nawet dla osób z podstawową znajomością obsługi komputera wykorzystać program Plano RS, jako skuteczne narzędzie wspomagania decyzji. Stosując program Plano RS, rolnik może ustalić ilości nawozów jakie powinny być zastosowane w gospodarstwie, zweryfikować wyliczenia ręczne.

Źródło:

Agricultural Engineering; 2014, 18, 2; 23-29
2083-1587

Pojawia się w:

Agricultural Engineering

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 91.

Tytuł:

Corrosion resistance of tin coatings deposited by different methods

Autorzy:

Winnicki, M.
Rutkowska-Gorczyca, M.
Baszczuk, A.
Małachowska, A.
Piwowarczyk, T.
Ambroziak, A.

Powiązania:

https://bibliotekanauki.pl/articles/1154007.pdf

Data publikacji:

2016-10

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

61.05.cp
68.35.bd
81.15.Pq
81.15.Rs
81.65.Kn

Opis:

This article describes the study of corrosion resistance of tin coatings deposited onto aluminum alloy substrates using the low pressure cold spraying and electroplating methods. The chemical corrosion resistance was examined using the Kesternich and cyclic salt spray tests inside SO₂ and NaCl climate chambers, respectively. The selected tests allowed simulation of the conditions of the coatings during service. The results were satisfactory for low pressure cold spraying coatings. Coatings produced by electroplating exhibit substantial corrosive losses due to their method of application and low thickness. Evaluation of corrosion were carried out by analyzing changes in the microstructure. Additionally, the physicochemical tests were carried out using X-ray diffraction to verify corrosion changes on the coatings surface.

Źródło:

Acta Physica Polonica A; 2016, 130, 4; 1155-1157
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 92.

Tytuł:

Sputtering of Benzene Sample by Large Ne, Ar and Kr Clusters - Molecular Dynamics Computer Simulations

Autorzy:

Rzeznik, L.
Paruch, R.
Garrison, B.
Postawa, Z.

Powiązania:

https://bibliotekanauki.pl/articles/1400433.pdf

Data publikacji:

2013-05

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

68.49.Sf
82.80.Ms
83.10.Rs
61.82.Pv
79.20.Rf

Opis:

Molecular dynamics simulations are employed to probe the role of an impact angle on emission efficiency of organic molecules sputtered from benzene crystal bombarded by 15 keV $Ne_{2953}$, $Ar_{2953}$, and $Kr_{2953}$ clusters. It is found that both the cluster type and the angle of incidence have significant effect on the emission efficiency. The shape of the impact angle dependence does not resemble the dependence characteristic for medium size clusters ($C_{60}$, $Ar_{366}$), where sputtering yield only moderately increases with the impact angle, has a shallow maximum around 40° and then decreases. On the contrary, for the large projectiles ($Ne_{2953}$, $Ar_{2953}$, and $Kr_{2953}$) the emission efficiency steeply increases with the impact angle, has a pronounced maximum around 55° followed by rapid signal decay. It has been found that the sputtering yield is the most sensitive to the impact angle change for Kr cluster projectiles, while change of the impact angle of Ne projectile has the smallest effect on the efficiency of material ejection.

Źródło:

Acta Physica Polonica A; 2013, 123, 5; 825-827
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 93.

Tytuł:

Ultrasonic Methods of the Cells Separation in Human Blood

Autorzy:

Włoch, A.
Czyż, H.
Jasiński, T.

Powiązania:

https://bibliotekanauki.pl/articles/1402588.pdf

Data publikacji:

2015-08

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

43.35.+d
47.35.Rs
62.60.+v
83.80.Hj
87.50.Y-

Opis:

This work deals with the problem of ultrasound in the context of biomedical and clinical applications. Ultrasonic waves can be used for the separation of cells in human blood. Under the influence of ultrasonic waves cells included in the liquid experience a certain characteristic displacement was referred to as drift. Presented work suggests that only radiation pressure should be taken into account as a mechanism of drifting in this situation. It has been demonstrated that the growth of cells concentration around the points of stable equilibrium is exponential. The time constant of this growth was estimated and the formulae which determine the time needed to obtain the assumed concentration increase have been derived. The theoretical studies of acoustic agglomeration of particles in the liquid have become a new focus in the ultrasonic research.

Źródło:

Acta Physica Polonica A; 2015, 128, 2; 234-236
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 94.

Tytuł:

Dynamic Viscosity of Aluminum Oxide-Ethylene Glycol (Al₂O₃-EG) Nanofluids

Autorzy:

Żyła, G.
Fal, J.
Gizowska, M.
Witek, A.
Cholewa, M.

Powiązania:

https://bibliotekanauki.pl/articles/1402591.pdf

Data publikacji:

2015-08

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

83.10.Pp
83.50.Ax
83.60.Fg
83.60.Rs
83.80.Hj

Opis:

The paper presents the results of measurements of rheological properties of ethylene glycol (EG) based aluminum oxide (Al₂O₃) nanofluids. The nanofluids have been produced by two-step method with the use of commercially available nanoparticles. Dynamic viscosity curves and dependence of viscosity on temperature for these materials have been measured. It has shown that with higher concentration of nanoparticles in the suspension, these nanofluids exhibit the non-Newtonian flow and it can be considered as shear-thinning liquids. The effect of temperature on the dynamic viscosity in Al₂O₃-EG nanofluids can be modelled with the use of Vogel-Fulcher-Tammann expression.

Źródło:

Acta Physica Polonica A; 2015, 128, 2; 240-242
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 95.

Tytuł:

Transmisja danych w pomiarach RTK GPS Systemem GPS 500
Data transmission in RTK GPS surveys using the Leica System 500 receivers

Autorzy:

Uznański, A.

Powiązania:

https://bibliotekanauki.pl/articles/385950.pdf

Data publikacji:

2007

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

pomiary kinematyczne w czasie rzeczywistym
RTCM
RS-232
komendy AT
RTK GPS surveys
AT commands

Opis:

W artykule opisano transmisję danych służących wyznaczaniu pozycji w pomiarach RTK GPS. Przedstawiono zagadnienia dotyczące rodzaju transmitowanych danych, protokołów ich transmisji, ze szczególnym zwróceniem uwagi na ogólnodostępny format RTCM w różnych aktualnie stosowanych wersjach. Omówiono sposób konfiguracji odbiornika GPS, w szczególności SR530, do komunikacji z modemem zewnętrznym, telefonem komórkowym oraz dalmierzem laserowym, umożliwiającym wyznaczanie współrzędnych punktów niedostępnych dla anteny sygnałów satelitarnych odbiornika GPS. Szczegóły przedstawionych zagadnień dotyczą rozwiązań firmy Leica w Systemie GPS 500, jednakże w ogólności będą one istotne niezależnie od producenta sprzętu GPS.
The paper deals with the transmission of data necessary for position determination in the real-time kinematic (RTK) GPS surveys. The problems pertaining to the type of transmitted data and transmission protocols are presented, with particular attention given to the popular RTCM format in different actually used versions. Receiver configuration, in particular of the SR 530, for communication with an external modem, cellular phone and a laser distancer, which allows positioning of points inaccessible for GPS antenna, is discussed. Though the details of the presented problems pertain to the solutions used in the Leica System 500 GPS receivers, the general outline is valid for GPS receivers of any manufacturer.

Źródło:

Geomatics and Environmental Engineering; 2007, 1, 3; 173-180
1898-1135

Pojawia się w:

Geomatics and Environmental Engineering

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 96.

Tytuł:

Electric Conductivity of $(Bi_{1-x}La_{x}FeO_{3})_{0.5}(PbTiO_{3})_{0.5}$ Ceramics Obtained from Mechanosynthesized Nanopowders

Autorzy:

Markiewicz, E.
Hilczer, B.
Balcerzak, M.
Jurczyk, M.

Powiązania:

https://bibliotekanauki.pl/articles/1375503.pdf

Data publikacji:

2014-10

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

81.07.Bc
81.07.Wx
81.20.Ev
75.85.+t
81.40.Rs

Opis:

Electric conductivity of $(Bi_{1-x}La_{x}FeO_{3})_{0.5}(PbTiO_{3})_{0.5}$ ceramics obtained from nanopowders synthesized by high-energy milling from respective oxides was studied in the frequency range 10 mHz ÷ 1 GHz. At room temperatures the low-frequency conductivity was found to be dominated by the contribution from poor-conducting grain boundaries, whereas the contribution in the range 1 kHz ÷ 1 MHz, due to the grain interior, was related by us to the small polaron hopping. Moreover, the electron exchange between ferric and ferrous ions activated at higher frequencies was found to be added to the conductivity above ≈ 1 MHz.

Źródło:

Acta Physica Polonica A; 2014, 126, 4; 971-974
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 97.

Tytuł:

Proton Transfer in Strong Hydrogen Bonds Revealed by Infrared Spectra - Correlations between Structure and Spectra for the BrH : $NH_3$ Complex

Autorzy:

Szczepaniak, K.
Person, W.

Powiązania:

https://bibliotekanauki.pl/articles/1813986.pdf

Data publikacji:

2007-12

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

82.30.Rs
33.20.Ea
33.70.Fd
31.15.Ew
33.20.Tp

Opis:

Our scope is to achieve an understanding of the relation between the infrared spectrum and structure of a strong hydrogen-bonded complex, BrH : $NH_3$, and how and why this relationship is affected by the environment surrounding the complex. A series of DFT/B3LYP/6-31G(d,p) calculations was carried out for this system to obtain its structure and spectrum in different dielectric fields characterized by their relative permittivities. Changes in structure and spectrum (both frequencies and intensities) as the relative permittivity changes are explored. Calculations of spectra are made first under the harmonic approximation. In the next step the effect of anharmonicity was estimated for several different dielectric fields. The calculated anharmonic spectrum (for $ε_r$ = 1.6) is compared with the experimentally observed infrared spectrum of the complex isolated in an Ar matrix at 10 K, obtained in our laboratory. The calculated frequencies and relative intensities for all normal modes agree with the corresponding experimental data surprisingly well. The potential usefulness of structure-spectra correlations is explored.

Źródło:

Acta Physica Polonica A; 2007, 112, S; S-19-S-38
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 98.

Tytuł:

Żelowanie preparatów serwatkowych

Autorzy:

Mleko, S

Powiązania:

https://bibliotekanauki.pl/articles/827899.pdf

Data publikacji:

2004

Wydawca:

Polskie Towarzystwo Technologów Żywności

Tematy:

wlasciwosci zelujace
bialka serwatkowe
wlasciwosci reologiczne
koncentraty bialkowe
zelowanie
reometr Haake RS300
preparaty serwatkowe
oznaczanie
zawartosc bialka
gelling property
whey protein
rheological property
protein concentrate
gelation
Haake RS300 rheometer
whey preparation
determination
protein content

Opis:

Celem pracy było przebadanie zdolności żelujących kilku produktów serwatkowych: sproszkowanej serwatki i koncentratów białek serwatkowych o zróżnicowanej zawartości białka. Otrzymywano roztwory o różnym stężeniu białka (4, 6, 8 lub 10%), ogrzewano w temp. 25–85°C i chłodzono do 25°C. Badano właściwości reologiczne przy użyciu reometru dynamicznego Haake RS300, notując wartości modułu zachowawczego, modułu stratności i tangensa kąta przesunięcia fazowego. W temp. 85 i 25°C przebadano wpływ częstości drgań sinusoidalnych na wartości modułów. Największy wzrost wartości modułów stwierdzono podczas chłodzenia wszystkich próbek. Zależność modułów od częstości drgań, badana w temp. 25°C, wskazywała na tworzenie się żeli. Spośród przebadanych produktów najlepiej żelujcym preparatem był koncentrat białek serwatkowych o zawartości białka i soli mineralnych odpowiednio: 65,3% i 5,9%, co wydaje się najbardziej optymalnym składem.
The objective of this project was to investigate the gelling ability of several whey products: powdered whey and whey protein concentrates with different protein content. Dispersions of different protein concentration (4, 6, 8 and 10%) were made, heated from a temperature of 25°C to 85°C, and cooled to 25°C. Rheological properties were investigated using a ‘Haake RS300’ dynamic rheometer in an oscillatory mode. Rheological modules, phase angle, and loss tangent were registered. Frequency sweeps were performed at 85°C and 25°C. For all investigated products, the storage modules increased when their samples were cooled. The frequency sweep at 25°C revealed that gels were formed. The best gelling performance was stated for the whey protein concentrate containing respectively: 65.3% of proteins and 5.9% of mineral salts. Among all investigated products, this particular composition seems to be the most optimal one to enable forming gel.

Źródło:

Żywność Nauka Technologia Jakość; 2004, 11, 1; 25-33
1425-6959

Pojawia się w:

Żywność Nauka Technologia Jakość

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 99.

Tytuł:

Wybrane zagadnienia teletransmisji danych w pomiarach RTK GPS
Chosen problems of data teletransmission during RTK GPS surveys

Autorzy:

Uznański, A.

Powiązania:

https://bibliotekanauki.pl/articles/386058.pdf

Data publikacji:

2007

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

pomiary kinematyczne w czasie rzeczywistym
RS-232C
komendy AT
Icecast
real time kinematic surveys
AT commands

Opis:

Poszerzenie spektrum zastosowań pomiarów satelitarnych jest możliwe dzięki wyposażeniu odbiornika GPS w porty komunikacyjne pozwalające na podłączanie różnych urządzeń zewnętrznych. W pracy zaprezentowano zagadnienia dotyczące transmisji danych w pomiarach RTK GPS, biorąc pod uwagę wszystkie możliwe sposoby wyznaczania pozycji punktów tą techniką pomiarową. Przedstawione zostały zagadnienia dotyczące asynchronicznej transmisji szeregowej wg standardu RS232C, który jest obecnie powszechnie wykorzystywany w odbiornikach satelitarnych. Najnowszy sposób wyznaczania pozycji z pomiarów RTK GPS korzysta z wirtualnych stacji referencyjnych na podstawie protokołu Ntrip. W związku z tym zamieszczono uwagi na temat serwerów danych strumieniowych i programów umożliwiających wykorzystanie protokołu Ntrip za pośrednictwem komputera i telefonu komórkowego.
The range of applications of spatial surveying techniques can be broadened thanks to communication ports of GPS receivers, as a variety of external devices can be attached to them. The paper presents problems pertaining to data transmission during RTK GPS surveys, taking into account all applicable methods for point position determination with this technique. Special attention is given to the asynchronic serial transmission according to the RS233C standard, as it is widely used in GPS receivers. The newest method of position determination with the RTK GPS measurements makes use of the virtual reference stations and the Ntrip protocol. Within discussion of this solution, some remarks pertaining to servers processing data streams, and to specialized software dedicated for use of the Ntrip protocol during communication between a computer and a cellular phone, are given.

Źródło:

Geomatics and Environmental Engineering; 2007, 1, 4; 223-230
1898-1135

Pojawia się w:

Geomatics and Environmental Engineering

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 100.

Tytuł:

The Influence of Fiber Laser Pulse Processing on Coercivity and Nanohardness of Fe-3.2Si Grain-Oriented Electrical Steel in relation with its Surface Changes and Magnetic Domains Modifications

Autorzy:

Puchý, V.
Falat, L.
Kováč, F.
Petryshynets, I.
Džunda, R.
Šebek, M.

Powiązania:

https://bibliotekanauki.pl/articles/1032305.pdf

Data publikacji:

2017-06

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

61.80.Ba
81.05.Bx
81.40.Rs
81.40.-z
75.60.Ch
79.20.Eb

Opis:

Fiber laser scribing of Fe-3.2Si grain-oriented electrical steel was carried out using three different laser pulse regimes, namely a single pulse laser regime, multipulse laser regime and multipulse laser regime with modulation of laser pulses. The samples were tested for coercivity and nanohardness before and after laser processing. Clear improvements in soft magnetic characteristics were observed for all the regimes using the lowest single pulse energy of 0.6 mJ. The best improvement i.e. the most significant decrease in coercivity was obtained after the regime with 5 pulses. Further increasing in both pulse energy and pulse number resulted only in detrimental effects on both magnetic and mechanical characteristics. Introduction of 50 kHz pulse modulation within 100-pulse laser regimes resulted in lower coercivity values in comparison with the same regimes without modulation. The major effects responsible for the observed improvement are related to optimal refinement and rearrangement of magnetic domains determined by the balance of laser-induced residual stresses and plastic deformation at the surface of the treated material. Thus the fiber laser pulse processing has been recognised as a useful and energy efficient tool in obtaining electrical steels for power transformers with lower core losses.

Źródło:

Acta Physica Polonica A; 2017, 131, 6; 1445-1449
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

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