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

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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

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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

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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

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