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Tytuł:
Boundary-only formulations of the boundary element method
W pełni brzegowe sformułowania w metodzie elementów brzegowych
Autorzy:
Nowak, A. J.
Powiązania:
https://bibliotekanauki.pl/articles/281310.pdf
Data publikacji:
1998
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
boundary element method
dual reciprocity method
multiple reciprocity method
boundary and domain integrals
Opis:
In the paper possible treatments of the domain integrals appearing in BEM are discussed. Major approaches are compared and critically evaluated with emphasis put on the dual and reciprocity reciprocity techniques. New trends in these methods involving new interpolation functions and decomposition are presented.
W artykule omówiono sposoby całek po całym obszarze występujących w metodzie elementów brzegowych. Podstawowe algorytmy obliczeniowe zostały krytycznie porównane ze szczególnym uwzględnieniem metod wykorzystujących zasady wzajemności: podwójną oraz wielokrotną. Zaprezentowano również trendy w tych technikach obliczeniowych, a w szczególności nowe funkcje interpolujące oraz metodę dekompozycji obszaru.
Źródło:
Journal of Theoretical and Applied Mechanics; 1998, 2; 479-491
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Badania struktury geometrycznej powierzchni wewnątrzustrojowej protezy przełyku
Gemetrical structure investigation of the surface of internal oesophagus prosthesis
Autorzy:
Nowak, A. J.
Dobrzański, L. A.
Powiązania:
https://bibliotekanauki.pl/articles/278411.pdf
Data publikacji:
2015
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Inżynierii Materiałów Polimerowych i Barwników
Tematy:
chropowatość powierzchni
proteza przełyku
materiały kompozytowe
profilometria optyczna
surface roughness
oesophageal prosthesis
composite materials
optical profilometry
Opis:
W pracy przedstawiono metodologie badań chropowatości powierzchni wewnętrznej i zewnętrznej wewnątrzustrojowej protezy przełyku wykonanej z długowłóknistego materiału kompozytowego o osnowie silikonu medycznego. W ramach rozwinięcia powierzchni zewnętrznej protezy zastosowano teksturowanie, które miało ułatwić osadzanie się ludzkich komórek i przerost tkanką własną zaiplantowanego pacjenta. Badania wykonano metodą liniowego, mechanicznego pomiaru stykowego oraz w ramach weryfikacji metodą profilometrii optycznej na mikroskopie konfokalnym. Celem pracy było zbadanie chropowatości powierzchni opracowanej protezy przełyku przed i po teksturowaniu aby ocenić jej wpływ na przyszłościowe zastosowanie protezy.
The research methodology of the roughness of internal and external surface of internal oesophageal prosthesis made of long-fibre composite material with medical silicone matrix is described in the article. External surface texturing of the prosthesis was applied to facilitate human cells deposition and hypertrophy of the tissue in the body of the patient, Linear, mechanical contact-measurement method and, for verification, optical profile measurement in confocal microscope were used. The aim of the work was roughness investigation of the surface of developed oesophageal prosthesis before and after texturing, to estimate its influence on future application of prosthesis.
Źródło:
Przetwórstwo Tworzyw; 2015, T. 21, Nr 4 (166), 4 (166); 337-342
1429-0472
Pojawia się w:
Przetwórstwo Tworzyw
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the parameters of supercapacitors containing polypyrrole and its derivatives
Autorzy:
Gocki, M.
Nowak, A.J.
Karoń, K.
Powiązania:
https://bibliotekanauki.pl/articles/24200628.pdf
Data publikacji:
2023
Wydawca:
Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
Tematy:
polymer supercapacitor
conductive polymers
cyclic voltammetry
chronopotentiometry
superkondensator polimerowy
polimery przewodzące
woltamperometria cykliczna
chronopotencjometria
Opis:
Purpose: Investigation of some parameters of energy storage devices (so-called supercapacitors) in which the structures of selected conductive polymers were implemented. Researchers were interested in the relationship between the parameters of the supercapacitor and the molecular structure of the conductive polymer used as the electrode material. Design/methodology/approach: The polypyrrole and its derivatives were produced by an electropolymerization process performed with cyclic voltammetry. During the research, polymer supercapacitors were created containing collectors made of ITO plates. Measurement of device parameters using cyclic voltammetry and chronopotentiometry. In addition, the devices use polymer electrolytes based on poly (methyl methacrylate) (PMMA). Findings: Devices containing polypyrrole have the best electrochemical parameters, while supercapacitors containing poly (phenylpyrrole) have the lowest parameters. This parameter is due to the high hindrance in the poly(phenylpyrrole) molecule in the form of an aromatic ring. Research limitations/implications: The most significant limitation of the devices is their durability due to the low strength of the conductive layer on ITO plates. This layer was easily degraded with too many test cycles. Practical implications: It was confirmed that polypyrrole and its derivatives could be used as electrode materials in energy storage devices. Originality/value: One of the few studies that allow the evaluation of the molecular structure of polypyrrole and its derivatives as electrode material in symmetrical supercapacitors.
Źródło:
Archives of Materials Science and Engineering; 2023, 120, 1; 5--14
1897-2764
Pojawia się w:
Archives of Materials Science and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical modeling and preliminary validation of drag-based vertical axis wind turbine
Autorzy:
Krysiński, T.
Buliński, Z.
Nowak, A. J.
Powiązania:
https://bibliotekanauki.pl/articles/240209.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
numerical modeling
numerical axis wind turbine
computational fluid dynamics (CFD)
modelowanie numeryczne
turbina wiatrowa
komputerowa mechanika płynów
Opis:
The main purpose of this article is to verify and validate the mathematical description of the airflow around a wind turbine with vertical axis of rotation, which could be considered as representative for this type of devices. Mathematical modeling of the airflow around wind turbines in particular those with the vertical axis is a problematic matter due to the complex nature of this highly swirled flow. Moreover, it is turbulent flow accompanied by a rotation of the rotor and the dynamic boundary layer separation. In such conditions, the key aspects of the mathematical model are accurate turbulence description, definition of circular motion as well as accompanying effects like centrifugal force or the Coriolis force and parameters of spatial and temporal discretization. The paper presents the impact of the different simulation parameters on the obtained results of the wind turbine simulation. Analysed models have been validated against experimental data published in the literature.
Źródło:
Archives of Thermodynamics; 2015, 36, 1; 19-38
1231-0956
2083-6023
Pojawia się w:
Archives of Thermodynamics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wastewater treatment in constructed wetlands
Oczyszczanie ścieków w oczyszczalni hydrofitowej
Autorzy:
Nowak, A. J.
Królik, D.
Kostecki, J.
Powiązania:
https://bibliotekanauki.pl/articles/396714.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
wastewater treatment
constructed wetlands
wastewater from buildings
oczyszczanie ścieków
oczyszczalnia hydrofitowa
ścieki z zabudowań
Opis:
Constructed wetlands are an alternative and economically reasonable way for the wastewater from dispersed development treatment. Existing systems showed that the effectiveness of this treatment is high. The whole treatment process depends on many factors such as time of operation, type of filling, temperature. Constructed wetlands with proper construction and operation are safe for the environment and users.
Oczyszczalnie hydrofitowe są alternatywnym i ekonomicznie uzasadnionym, sposobem na oczyszczanie ścieków pochodzących z zabudowań charakterze rozproszonym. Literatura oraz badania istniejących systemów ze złożem gruntowo roślinnym pokazują, że skuteczność oczyszczania ścieków jest wysoka. Na skuteczność wpływa wiele czynników tj. czasu eksploatacji, rodzaju wypełnienia złoża, temperatury. Hydrofitowe oczyszczalnie ścieków przy odpowiedniej budowie i eksploatacji są bezpieczne dla środowiska oraz użytkowników.
Źródło:
Civil and Environmental Engineering Reports; 2013, 11; 93-99
2080-5187
2450-8594
Pojawia się w:
Civil and Environmental Engineering Reports
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical modelling and analysis of cooling system of electrical transformer dipped into polymerised resin
Autorzy:
Smołka, J.
Nowak, A. J.
Wrobel, L. C.
Powiązania:
https://bibliotekanauki.pl/articles/1955729.pdf
Data publikacji:
2003
Wydawca:
Politechnika Gdańska
Tematy:
dry electrical transformer
heat transfer
natural convection
coupled analysis
Opis:
This paper discusses a numerical model of the heat dissipation processes in an electrical transformer dipped into polymerised resin. The transformer is cooled by both natural convection (via the ambient air) and forced convection (via the water cooling system attached to one of the transformer casing walls). Two cases have been compared, i.e. the cooler connected to the bottom or the top wall of the transformer container, respectively. In order to improve the modelling of the natural convection problem, an independent geometrical model of the surrounding air was created and considered separately. The continuity of temperature and heat flux along the interface between the transformer and air was enforced by an iterative procedure. This procedure allowed one to calculate and then prescribe local heat fluxes to the external walls of the transformer. The numerical results obtained in this project have yielded information on the efficiency of the analysed cooling system.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2003, 7, 3; 439-448
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical modelling of a multi-physical problem within an encapsulated three-phase transformer and its surroundings
Autorzy:
Smolka, J.
Nowak, A. J.
Ingham, D.B.
Elliot, L.
Powiązania:
https://bibliotekanauki.pl/articles/1955350.pdf
Data publikacji:
2006
Wydawca:
Politechnika Gdańska
Tematy:
numerical modelling
electrical transformer
local heat sources
heat generation
coupled problem
anisotropic material properties
Opis:
The paper presents a numerical thermal model of an encapsulated three-phase electrical transformer. The model is based on the multi-physical approach and involves heat transfer analysis coupled with the examination of specific power losses in the coils and the core using electromagnetic field analysis as well as determination of thermal stresses. The thermal boundary conditions (i. e. local heat fluxes) are determined by considering a numerical model of the surrounding air. Additionally, the device is cooled via radiation (from the external walls) and forced convection (a water cooling system). A few different configurations of the cooler and the heat pipes are also analyzed. Moreover, anisotropic material properties were applied for stranded coils and the core. A partial experimental validation of the model has shown that the temperature distribution within the transformer is more realistic and closer to the measurements when compared with the previous analysis limited to heat transfer problems only with uniform internal heat sources and isotropic material properties. The total heat transfer rate indicates that forced convection is the most important heat dissipation mechanism in this model. The significance of the water cooling system has also been established in calculations of crack presence in the model.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2006, 10, 1; 63-81
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Influence of the Dispersion Method on the Microstructure and Properties of MWCNTs/AA6061 Composites
Autorzy:
Dobrzański, L. A.
Macek, M.
Tomiczek, B.
Nuckowski, P. M.
Nowak, A. J.
Powiązania:
https://bibliotekanauki.pl/articles/352262.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
nanocomposites
powder metallurgy
mechanical milling
carbon nanotubes
aluminium alloys
Opis:
The aim of this work was to study the effect of different methods of multi-walled carbon nanotubes (MWCNTs) dispersion, and their influence on the microstructure and properties of aluminium alloy matrix composites produced using the powder metallurgy techniques, such as powder milling/mixing and hot extrusion. The main problem in the manufacturing of nanocomposites is the homogeneous distribution of MWCNTs in the metal matrix. To achieve their proper distribution a high-energy and low-energy mechanical milling, using a planetary ball mill, and mixing, using a turbulent mixer, were applied. Studies have shown that composite materials prepared using milling and extrusion have a much better dispersion of the reinforcing phase, which leads to better mechanical properties of the obtained rods. The low-energy mechanical mixing and mixing using the turbulent mixer neither change the powder morphology nor lead to adequate dispersion of the carbon nanotubes, which directly affects the resulting properties.
Źródło:
Archives of Metallurgy and Materials; 2016, 61, 2B; 1229-1234
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of aging solutions on wear resistance and hardness of selected resin-based dental composites
Autorzy:
Chladek, G.
Basa, K.
Żmudzki, J.
Malara, P.
Nowak, A. J.
Kasperski, J.
Powiązania:
https://bibliotekanauki.pl/articles/306782.pdf
Data publikacji:
2016
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
właściwości
mikrotwardość
kompozyty stomatologiczne
tarcie
test
properties
microhardness
dental composite
friction
wear test
aging solution
Opis:
Purpose: The purpose of this study was to investigate the effect of different plasticizing aging solutions on wear resistance and hardness of selected universal resin-based dental composites. Methods: Three light cured (one nanofilled, two microhybride) and one hybride chemical cured composites were aged at 37 °C for 48 h in distillated water, ethyl alcohol solution or Listerine mouthwash. After aging the microhardness tests were carried out and then tribological tests were performed in the presence of aging solution at 37 °C. During wear testing coefficients of friction were determined. The maximal vertical loss in micrometers was determined with profilometer. Results: Aging in all liquids resulted in a significant decrease in hardness of the test materials, with the largest values obtained successively in ethanol solution, mouthwash and water. The effect of the liquid was dependent on the particular material, but not the type of material (interpreted as the size of filler used). Introduction of mouthwash instead of water or ethanol solution resulted in a significant reduction in the coefficient of friction. The lowest wear resistance was registered after aging in ethanol and for the chemical cured hybrid composite, but the vertical loss was strongly material dependent. Conclusions: The effect of different aging solution, including commercial mouthrinse, on hardness and wear was material dependent, and cannot be deduced from their category or filler loading. There is no simple correlation between hardness of resin-based dental composites and their wear resistance, but softening of particular composites materials during aging leads to the reduction of its wear resistance.
Źródło:
Acta of Bioengineering and Biomechanics; 2016, 18, 3; 43-52
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zakon krzyżacki w Prusach i Inflantach. Podziały administracyjne i kościelne w XIII–XVI wieku, pod red. R. Czai i A. Radzimińskiego, oprac: M. Arszyński, M. Biskup, R. Czaja, B. Jähnig, K. Militzer, Z. H. Nowak, A. Radzimiński, J. Tandecki, Wydawnictwo Naukowe Uniwersytetu Mikołaja Kopernika, Toruń 2013, ss. 573.
Autorzy:
Białuński, Grzegorz
Powiązania:
https://bibliotekanauki.pl/articles/1365111.pdf
Data publikacji:
2015
Wydawca:
Instytut Północny im. Wojciecha Kętrzyńskiego w Olsztynie
Opis:
Omówienie publikacji: Zakon krzyżacki w Prusach i Inflantach. Podziały administracyjne i kościelne w XIII–XVI wieku, pod red. R. Czai i A. Radzimińskiego, oprac: M. Arszyński, M. Biskup, R. Czaja, B. Jähnig, K. Militzer, Z. H. Nowak, A. Radzimiński, J. Tandecki, Wydawnictwo Naukowe Uniwersytetu Mikołaja Kopernika, Toruń 2013, ss. 573.
Źródło:
Komunikaty Mazursko-Warmińskie; 2015, 288, 2; 343-346
0023-3196
2719-8979
Pojawia się w:
Komunikaty Mazursko-Warmińskie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stories with microorganisms…
Historie z mikroorganizmami…
Autorzy:
Nowak, A.
Nowak, M. J.
Cybulska, K.
Powiązania:
https://bibliotekanauki.pl/articles/106535.pdf
Data publikacji:
2017
Wydawca:
Towarzystwo Chemii i Inżynierii Ekologicznej
Tematy:
microorganisms
history
society
medicine
mikroorganizmy
historia
społeczeństwo
medycyna
Opis:
Microorganisms, usually invisible for us, accompany us always and everywhere. Often we do not realize how decisive its impact on our lives is, how much we use their presence, which of our troubles are the result of their actions, and also how surprising effects result from their activity. Microorganisms also very often play a decisive role in the development of societies, politics and history. One of the most spectacular interventions of micro-organisms in human history include the example of a false “oil fever” that exploded in Australia in the second half of the nineteenth century. It was even more significant to redirect Europe's history in the new direction as a result of the “black death” epidemic in the fourteenth century. Microorganisms have created social conditions for the transition to the next epoch - renaissance, which forms the basis of today's shape. Because of the microorganisms J.F. Kennedy could have been in the 1960 President of the United States of America and to direct her development in the new direction and to stop Khrushchev's expansion into the second hemisphere. Microorganisms, not leaders and generals, won battles and wars. It was Rikketsia prowazeki, not the genius of the opponents, that broke Napoleon's power in Europe. Microorganisms fight disease, improving quality of life and prolonging its period. They allowed to control rabies and numerous infectious diseases. In the economy for the cause of microorganisms, powerful monopolies fell. Bacteria were also used to protect civilians in Poland during World War II. There are many similar stories to tell, stories in which microorganisms play an essential role. But would these stories be about microorganisms only? Or perhaps about people who were fascinated by the microscopic world of microbes discovered his secrets, meaning and ... beauty.
Mikroorganizmy, niedostrzegalne na co dzień, towarzyszą nam zawsze i wszędzie. Często nie zdajemy sobie sprawy, jak decydujący wpływ wywierają na nasze życie, jakie korzyści przynosi ich obecność, które z naszych kłopotów są skutkiem ich działania, a także jak zaskakujące rezultaty wynikają z ich aktywności. Niejednokrotnie mikroorganizmy odegrały też decydującą rolę w rozwoju społeczeństw, polityce i historii. Do najbardziej spektakularnych ingerencji mikroorganizmów w historię ludzkości należy między innymi przykład fałszywej „gorączki naftowej”, która wybuchła w Australii w drugiej połowie XIX wieku. Jeszcze bardziej znaczące było skierowanie historii Europy w nowym kierunku na skutek epidemii „czarnej śmierci” w XIV wieku. Mikroorganizmy wytworzyły warunki społeczne do przejścia do kolejnej epoki - odrodzenia, stwarzającej podstawy dzisiejszego kształtu kultury europejskiej. To dzięki mikroorganizmom J.F. Kennedy mógł zostać w roku 1960 prezydentem Stanów Zjednoczonych Ameryki i skierować jej rozwój na nowe tory. Mikroorganizmy, a nie przywódcy i generałowie wygrywali bitwy i wojny. To Rikketsia prowazeki, a nie geniusz przeciwników złamała potęgę Napoleona w Europie. Drobnoustroje walczą z chorobami, powodując poprawę jakości życia i przedłużenie jego trwania. Pozwoliły na opanowanie wścieklizny oraz licznych chorób zakaźnych. W gospodarce za przyczyną mikroorganizmów upadały potężne monopole. Bakterie zostały też użyte do ochrony ludności cywilnej w Polsce podczas drugiej wojny światowej. Jeszcze wiele podobnych historii można by opowiedzieć, historii, w których mikroorganizmy odgrywają niepoślednią rolę. Czy jednak byłyby to historie tylko o mikroorganizmach? Czy może też o ludziach, którzy zafascynowani mikroskopijnym światem drobnoustrojów odkrywali jego tajemnice, znaczenie i … piękno.
Źródło:
Chemistry-Didactics-Ecology-Metrology; 2017, 22, 1-2; 59-68
2084-4506
Pojawia się w:
Chemistry-Didactics-Ecology-Metrology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An immunohistochemical analysis of lymphocytic infiltrations in canine skin cancers
Autorzy:
Madej, J.A.
Madej, J.P.
Dzimira, S.
Nowak, M.
Powiązania:
https://bibliotekanauki.pl/articles/31669.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
Lymphocytic infiltrations located in the extracellular matrix often accompany canine skin cancer. They can be characterised as an inflammatory infiltration and/or a second tumour – lymphoma. The aim of this study was an immunohistochemical analysis of a lymphocytic infiltration which accompanies spontaneous skin cancer. Twenty basal cell carcinoma, 20 non-keratinizing squamous cell carcinoma, 20 keratinizing squamous cell carcinoma and 8 sebaceous gland carcinoma samples which were accompanied by a lymphocytic infiltration and/or secondary lymphatic follicles were verified histopathologically. The expression of bcl-2, CD3, CD79α, Ki-67, MCM-3 and MCM-7 in the lymphocytic infiltration was evaluated. Four types of lymphocytic infiltrations were found: I – diffuse bcl-2⁺, II – diffuse bcl-2⁻, III – follicular bcl-2⁺/⁻ where the centre was bcl-2⁻, and the marginal zone of the follicles and the extrafollicular area were bcl-2⁺ and IV – aggregated bcl-2⁺, where the centre and periphery were bcl-2⁺. The I and IV type corresponds to lymphoma, II type is non-neoplastic immune response and III type suggest reactive follicular hyperplasia. The proliferation of lymphocytes which demonstrated the expression of neoplastic markers (I and IV), suggests preneoplastic phase (pseudolymphoma) or lymphoma – the second independent tumour. A high proliferative index of the follicular blc-2⁺/⁻ follicular infiltration indicates an increased immunological response of the host against skin cancer.
Źródło:
Polish Journal of Veterinary Sciences; 2017, 20, 1
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wątpienie Kartezjusza a szaleństwo
Autorzy:
Nowak, Borys
Powiązania:
https://bibliotekanauki.pl/articles/2099952.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
wątpienie
szaleństwo
psychoza
ciało
cogito
Kartezjusz
J. Derrida
M. Foucault
Opis:
Praca analizuje wątpienie Kartezjusza, wykorzystując dwie interpretacje, które łączą je w sposób odmienny z doświadczeniem szaleństwa. M. Foucault widzi w nim wykluczenie szaleństwa poza dyskurs rozsądnej refleksji, natomiast J. Derrida dostrzega dopuszczenie ryzyka szaleństwa do samych podstaw refleksji i rozumu. Następnie staram się porównać kartezjańskie wątpienie z przypadkami zaburzeń psychotycznych, których artykulacje można znaleźć w psychiatrii. Po dokładniejszym przeanalizowaniu oraz przywołaniu kontekstu współczesnych dyskusji na temat zaburzeń psychotycznych te dwie różne interpretacje mogą okazać się wzajemnie uzupełniające i jednocześnie pobudzać do głębszej analizy samych Medytacji, w szczególności dwóch istotnych momentów wątpienia: poczucia realności własnego ciała oraz spotkania ze złośliwym duchem.
Źródło:
Przegląd Filozoficzny. Nowa Seria; 2017, 2; 105-120
1230-1493
Pojawia się w:
Przegląd Filozoficzny. Nowa Seria
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stężenie włókien azbestu na terenie dzikich wysypisk azbestu
Concentrations of asbestos fibres at wild asbestos wastes damping grounds
Autorzy:
Brzana, W.
Buczaj, A.
Nowak, J.
Nowak, D.
Powiązania:
https://bibliotekanauki.pl/articles/4036.pdf
Data publikacji:
2014
Wydawca:
Instytut Medycyny Wsi
Opis:
Wprowadzenie i cel. Wyroby zawierające azbest powinny być zabezpieczane i usuwane zgodnie ze ściśle określonymi przepisami. Usuwaniem produktów azbestowych z terenów gospodarstw zajmują się wyspecjalizowane i zarejestrowane ekipy. Firmy, o których mowa, odpowiedzialne są za prawidłowy demontaż, zabezpieczenie oraz przetransportowanie odpadów azbestowych na specjalnie przystosowane składowiska. Niestety, zdarza się, że właściciele odpadów zawierających azbest sami demontują wyroby azbestowe, narażając na niebezpieczeństwo siebie oraz innych. Odpady takie są często składowane na terenie gospodarstw bez żadnego zabezpieczenia lub wyrzucane do środowiska naturalnego. Powstające w ten sposób dzikie wysypiska materiałów zawierających azbest, stają się źródłem emisji do powietrza niebezpiecznych włókien azbestu. Miejsca takie stanowią potencjalne zagrożenie dla ludzi i zwierząt. Celem pracy jest określenie stężenia włókien azbestu na wybranych dzikich wysypiskach azbestu w powiecie lubelskim. Materiał i metoda. Pobór prób powietrza wykonano zgodnie z Polską Normą PN-84/Z-04008.02 z uwzględnieniem specyfiki zanieczyszczenia powietrza włóknami azbestu oraz Polską Normą PN-Z-04008–7. Oznaczenie stężenia włókien azbestu wykonano zgodnie z Polską Normą PN-88/Z-04202/02. Wyniki i wnioski. Podczas badań zarejestrowano wysokie stężenia respirabilnych włókien azbestu na terenie dzikich wysypisk, wynoszące od 1837 wł/m3 do 3675 wł/m3. Świadczy to o wzmożonej emisji szkodliwych włókien do powietrza z powierzchni materiałów zawierających azbest, które niewłaściwie usuwane i wyrzucane do środowiska naturalnego stanowią duże zagrożenie dla zdrowia i życia ludzi i zwierząt.
Introduction. Products containing asbestos should be protected and removed according to precisely specified regulations. Asbestos products are removed by properly trained teams provided with suitable equipment. The above-mentioned enterprises are responsible for the correct deposition and protection, as well as safe transport, of asbestos wastes to specially adapted dumping grounds. Unfortunately, not all owners of asbestos containing wastes use the services of the specialized enterprises. They deconstruct asbestos products on their own, exposing themselves and others to risk. Such wastes are subsequently deposited without any protection or disposed into the natural environment. Wild dumping grounds occurring in this way emit great amounts of dangerous fibres into the air, and create a great risk for humans and animals. Objective. The aim of the study was evaluation of concentrations of asbestos fibres at wild asbestos wastes damping grounds. Methods. Air samples were collected according to the Polish Standards PN-84/Z-04008.02 and PN-Z-04008–7. The strategy of collecting samples will also be based on the methods of investigating dust in the agricultural occupational environment developed at the Institute of Rural Health. The determination of the concentration of asbestos fibres was performed in accordance with Polish Standard PN-88/Z-04202/02. Results. A high concentration of asbestos fibres was established in the area of wild asbestos dumping grounds. The emission of harmful fibres in such places is very high. This shows that asbestos products, when inadequately dismantled and disposed into the natural environment, create a greater risk for health and life.
Źródło:
Medycyna Ogólna i Nauki o Zdrowiu; 2014, 20(49), 1
2083-4543
Pojawia się w:
Medycyna Ogólna i Nauki o Zdrowiu
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Endometrosis - significance for horse reproduction, pathogenesis, diagnosos, and proposed therapeutic methods
Autorzy:
Buczkowska, J.
Kozdrowski, R.
Nowak, M.
Ras, A.
Mrowiec, J.
Powiązania:
https://bibliotekanauki.pl/articles/30289.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
Equine endometrosis is a multifactorial disease considered to be a one of the most important causes of equine infertility, especially in older mares. This article reviews the current knowledge of equine endometrosis: pathogenesis, diagnosis, and optional treatment. Also describes the histomorphological and immunohistochemical characterization of endometrosis as well as potential etiological factors which may influence disease progression. Unfortunately, the etiology and pathogenesis of endometrosis still remains unclear, and consequently no effective treatment has been proposed so far. Therefore future studies are needed for explanation of this disease.
Źródło:
Polish Journal of Veterinary Sciences; 2014, 17, 3
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Antimicrobial susceptibility of Brachyspira hyodysenteriae isolated from 21 Polish farms
Autorzy:
Zmudzki, J.
Szczotka, A.
Nowak, A.
Strzelecka, H.
Grzesiak, A.
Pejsak, Z.
Powiązania:
https://bibliotekanauki.pl/articles/32546.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
Swine dysentery (SD) is a common disease among pigs worldwide, which contributes to major production losses. Antimicrobial susceptibility testing of B. hyodysenteriae, the etiological agent of SD, is mainly performed by the agar dilution method. This method has certain limitations due to difficulties in interpretation of results. The aim of this study was the analysis of antimicrobial susceptibility of Brachyspira hyodysenteriae (B. hyodysenteriae) Polish field isolates by broth microdilution procedure. The study was performed on 21 isolates of B. hyodysenteriae, collected between January 2006 to December 2010 from cases of swine dysentery. VetMIC™ Brachyspira panels with antimicrobial agents (tiamulin, valnemulin, doxycycline, lincomycin, tylosin and ampicillin) were used for susceptibility testing of B. hyodysenteriae. The minimal inhibitory concentration (MIC) was determined by the broth dilution procedure. The lowest antimicrobial activity was demonstrated for tylosin and lincomycin, with inhibition of bacterial growth using concentrations >128 μg/ml and 32 μg/ml, respectively. In the case of doxycycline, the MIC values were ≤ 2.0 μg/ml. No decreased susceptibility to tiamulin was found among the Polish isolates and MIC values for this antibiotic did not exceed 1.0 μg/ml. The results of the present study confirmed that Polish B. hyodysenteriae isolates were susceptible to the main antibiotics (tiamulin and valnemulin) used in treatment of swine dysentery. Further studies are necessary to evaluate a possible slow decrease in susceptibility to tiamulin and valnemulin of B. hyodysenteriae strains in Poland.
Źródło:
Polish Journal of Veterinary Sciences; 2012, 15, 2
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Laparoskopowe wycięcie wyrostków robaczkowych zawierających metaliczne ciała obce
Autorzy:
Kalaciński, J.
Jakubowski, A.
Dzielicki, J.
Nowak, F.
Wojdyło, A.
Frączek, J.
Powiązania:
Lekarz Wojskowy 1996, Suplement I, s. [101]-102
Data publikacji:
1996
Tematy:
Wyrostek robaczkowy leczenie chirurgia materiały konferencyjne
Laparoskopia stosowanie materiały konferencyjne
Chirurgia
Materiały konferencyjne
Opis:
Bibliogr.; Materiały IV Sympozjum Sekcji Viscero-Syntezy Towarzystwa Chirurgów Polskich. Kazimierz Dolny 4-6 maja 1995.
Dostawca treści:
Bibliografia CBW
Artykuł
Tytuł:
Electron Temperature in Semi-Insulating GaAs for Low Electric Fields
Autorzy:
Zduniak, A.
Łusakowski, J.
Nowak, G.
Powiązania:
https://bibliotekanauki.pl/articles/1923732.pdf
Data publikacji:
1992-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
72.20.Ht
Opis:
Heating of electrons by electric fields smaller than that required for generation of domain oscillations was investigated in samples of EL2-rich semi-insulating GaAs. Current-voltage characteristics were measured as a function of temperature between 268 K and 330 K. They exhibit a sublinear shape which is interpreted as a result of an enhanced electron capture on the EL2. The capture rate and the electron temperature as a function of the electric field was determined. A fitting procedure gave the value of electron capture cross-section on the EL2 to be 2.7 × 10$\text{}^{-13}$ cm$\text{}^{2}$ which agrees with literature data.
Źródło:
Acta Physica Polonica A; 1992, 82, 5; 777-780
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Inter-Dot Coupling in a Self-Assembled Quantum Dot System
Autorzy:
Kazimierczuk, T.
Nowak, S.
Suffczyński, J.
Wojnar, P.
Golnik, A.
Gaj, J. A.
Kossacki, P.
Powiązania:
https://bibliotekanauki.pl/articles/2047689.pdf
Data publikacji:
2007-08
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
78.67.Hc
78.55.Et
Opis:
We present studies of resonant excitation of self-assembled CdTe/ZnTe quantum dots. Photoluminescence excitation measurements revealed existence of sharp resonances, common for photoluminescence lines attributed to different quantum dot charge states. We conclude from the ensemble of photoluminescence and photoluminescence excitation results that we observe energy transfer in coupled quantum dot pairs.
Źródło:
Acta Physica Polonica A; 2007, 112, 2; 321-324
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Immunohistochemical detection of Lawsonia intracellularis in tissue section from pigs
Autorzy:
Szczotka, A.
Stadejek, T.
Zmudzki, J.
Nowak, A.
Osinski, Z.
Pejsak, Z.
Powiązania:
https://bibliotekanauki.pl/articles/31904.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
The aim of the present study was to develop an immunohistochemical method (IHC) for detection of Lawsonia intracellularis (L. intracellularis) in formalin-fixed, paraffin embedded sections of intestines from pigs and to implement this method in differential diagnosis of swine diseases with diarrhea in postweaning pigs. The study was conducted on 165 sections of intestines (ileum, caecum and colon) collected from 76 pigs, representing 42 Polish pig farms. The animals included in the analysis suffered from diarrhea, with bloody or grey to brown feces, and were suspected of porcine proliferative enteropathy (PPE). Sections of intestines were analyzed for the presence of L. intracellularis by polymerase chain reaction (PCR) and IHC. Among 165 intestinal samples from pigs with diarrhea, L. intracellularis DNA was detected by PCR in 33 (20.0%) samples. In this group, 30 samples (18.2% of all the samples tested) were also found positive in IHC, while only 3 (1.8%) were IHC-negative. One hundred thirty-two (80.0%) samples were negative in both tests. The PCR- and IHC-positive samples originated from 11 pigs, 4- to 20-week old, from 8 farms. L. intracellularis antigen was visualized by IHC mostly in intestinal crypts and/or in mononuclear cells of the lamina propria). The positive signal in epithelial cells was observed close to the luminal borders, creating typical specifically stained rims around the crypt lumina.ą The results of the present study further confirm the usefulness of IHC in the detection of L. intracellularis antigen in the intestinal tissues.
Źródło:
Polish Journal of Veterinary Sciences; 2011, 14, 4
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analytical model of foil consumption for cylindrical bale wrapping
Autorzy:
Stępniewski, A.
Nowak, J.
Stankiewicz, A.
Powiązania:
https://bibliotekanauki.pl/articles/410936.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Oddział w Lublinie PAN
Tematy:
baled silage
stretch foil consumption
simulation model
Opis:
The work presents an algorithm for the calculation of the consumption of stretch foil used to wrap cylindrical bales of fodder in order to isolate the fodder from the air and other external factors. Mechanical properties of the foil, its arbitrary dimensions and any overlapping width of subsequent wrapped foil layers ware taken into account. A simulation program was written that allows to compute the number of foil layers in the bale lateral surface as a function of the width of the foil, the angle of the bale's rotation around its axis and the number of wrappings. The computer program contains graphical module which allows visualization of geometry of the distribution of subsequent foil strips and the arrangement of foil layer in a bale cross-section. The length and surface area of the foil taken from the roll are computed for different variants of the wrapping process. The computational example is presented for two geometrically different ways of wrapping and different initial widths of the foil. Conclusions and suggestions were formulated as a result of the simulation.
Źródło:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes; 2016, 5, 2; 99-104
2084-5715
Pojawia się w:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wplyw nawozow organicznych na plonowanie i zdrowotnosc buraka cukrowego
Autorzy:
Szymczak-Nowak, J
Nowakowska, H
Sitarski, A
Tyburski, J
Powiązania:
https://bibliotekanauki.pl/articles/808111.pdf
Data publikacji:
2002
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
buraki cukrowe
zdrowotnosc roslin
nawozenie
plonowanie
nawozy organiczne
Opis:
In 2001, on podsolic soil at Chrząstowo (kujawsko-pomorski district) and Bałcyny (warmińsko-mazurski district) the influence of farmyard manure (30 t·ha⁻¹), whiter wheat straw (6 t·ha⁻¹ + 40 kg N·ha⁻¹ in urea form) and compost (10 t·ha⁻¹) application on field emergence, crop density, yield, technological quality and health of sugar beet was tested in comparison to mineral fertilization (120 kg N·ha⁻¹, 39,3 kg P·ha⁻¹ and 166 kg K·ha⁻¹). Organic fertilization (farmyard manure, straw and compost) showed positive influence on health of sugar beet seedlings in comparison to the mineral fertilization. In the first period of growth the mass of plants was largest on plots with farmyard manure fertilization. Health of sugar beet at the end of vegetation was the best on plots with compost fertilization. Used organic manures positively influenced on the yield of roots. At Bałcyny, organic manures showed advantageous effect on yield of technological sugar. Lowest content of sugar and potassium ions were obtained from sugar beet fertilizated by the straw.
W 2001 r., na glebie płowej właściwej w Chrząstowie (woj. kujawsko-pomorskie) i w Bałcynach (woj. warmińsko-mazurskie) badano wpływ nawożenia obornikiem (30 t·ha⁻¹), słomą z pszenicy ozimej (6 t·ha⁻¹ + 40 kg N·ha⁻¹ w formie mocznika) i kompostem (10 t·ha⁻¹) na wschody, obsadę, plon, jakość technologiczną i zdrowotność buraka cukrowego na tle nawożenia mineralnego 120 kg N·ha⁻¹, 39,3 kg Pha⁻¹ i 166 kg K·ha⁻¹). Nawożenie organiczne (obornik, słoma i kompost) wpłynęło na poprawę zdrowotności siewek buraka w porównaniu do samego nawożenia mineralnego. Masa roślin w początkowym okresie wzrostu buraka była najwyższa po nawożeniu obornikiem, a najlepsza zdrowotność w końcowym okresie wegetacji po nawożeniu kompostem. Zastosowane nawozy organiczne w obydwu miejscowościach wpłynęły korzystnie na plon korzeni oraz na plon cukru technologicznego w Bałcynach. Najniższą zawartość cukru i jonów potasu w korzeniach stwierdzono po nawożeniu buraka słomą.
Źródło:
Zeszyty Problemowe Postępów Nauk Rolniczych; 2002, 484, 2; 683-690
0084-5477
Pojawia się w:
Zeszyty Problemowe Postępów Nauk Rolniczych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of long-term oral application of quinolones on the ECG curve in dogs
Autorzy:
Noszczyk-Nowak, A.
Cepiel, A.
Cekiera, A.
Popiel, J.
Pasławska, U.
Powiązania:
https://bibliotekanauki.pl/articles/2087907.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Źródło:
Polish Journal of Veterinary Sciences; 2017, 3; 567-572
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nanoscale deformation of GaAs affected by silicon doping
Autorzy:
Majtyka, A.
Nowak, R.
Chrobak, D.
Powiązania:
https://bibliotekanauki.pl/articles/1112264.pdf
Data publikacji:
2016-10
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
64.70.kg
61.72.J-
Opis:
Effect of silicon doping on the elastic-plastic transition of GaAs crystal is demonstrated by results of nanoindentations and ab initio simulations. The performed experiments show that an increase of silicon concentration causes a decrease of the contact pressure at the onset of permanent nanodeformation of GaAs crystal. Ab initio calculations demonstrate that presence of Si atoms in the crystal lattice suppresses the shear modulus as well as the pressure of equilibrium between zinc-blende and rock-salt phases of GaAs. Furthermore, it is argued that the effect of dislocations pinning to Si dopants is essential for clarification of GaAs yielding.
Źródło:
Acta Physica Polonica A; 2016, 130, 4; 1127-1130
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
AFM Investigation of Biological Nanostructures
Autorzy:
Strzelecki, J.
Dąbrowski, M.
Strzelecka, J.
Tszydel, M.
Mikulska, K.
Nowak, W.
Balter, A.
Powiązania:
https://bibliotekanauki.pl/articles/1419535.pdf
Data publikacji:
2012-08
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
87.64.Dz
81.07.-b
Opis:
Nanostructures created by living organisms, optimized through millions of years of evolution, can be a valuable inspiration for nanotechnology. We employ atomic force microscopy to examine such structures in materials created by common organisms - caddisfly and diatoms. Caddisfly larvae are well known for their ability to spin silk, which serves as an "adhesive tape" to glue various materials and collect food in aqueous environment. Atomic force microscopy imaging of caddisfly silk, performed for the first time by our team, has shown that its surface is patterned with 150 nm extensions - a feature related to its exceptional underwater sticking abilities. Results of force spectroscopy of protein structures found on the surface are also shown. A characteristic feature of diatoms is that they are encased within a unique silica cell wall called frustules, patterned with 200 nm pores, which allow cellular interaction with the environment. We perform atomic force microscopy imaging of frustules in living diatoms as well as adhesion measurements inside pores.
Źródło:
Acta Physica Polonica A; 2012, 122, 2; 329-332
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Prevalence of insomnia and depression in patients with age-related macular degeneration
Bezsenność i zachowania depresyjne u pacjentów ze zwyrodnieniem plamki żółtej związanym z wiekim
Autorzy:
Nowak, E.
Kulik, A.
Wrobel, J.
Nowak, G.
Nowak, D.
Roczniak, W.
Josko-Ochojska, J.
Powiązania:
https://bibliotekanauki.pl/articles/2053002.pdf
Data publikacji:
2018
Wydawca:
Akademia Bialska Nauk Stosowanych im. Jana Pawła II w Białej Podlaskiej
Tematy:
age related macular degeneration
AMD
insomnia
depression
zwyrodnienie plamki żółtej związane z wiekiem
bezsenność
depresja
Opis:
Background. Age Related Macular Degeneration (AMD) affecting the organ of vision, impairs central vision. The study objective was (1) to define the prevalence of sleep disorders and depressive symptoms in patients with AMD, (2) to assess the relationship of depressive symptoms and insomnia with chosen demographic data, (3) to assess a potential correlation of the exacerbating vision quality with depressive symptoms and sleep disorders. Material and methods. The study involved 105 patients, women and men aged 45-88. Patients were asked to complete an original questionnaire subjected to validation, the Beck Depression Inventory and the Athens’s Insomnia Scale. Results. The results were analysed statistically, showing that 71% of the respondents had insomnia and 70% suffered from depression. The patients’ age, time from the diagnosis, marital and occupational status were not found to be related to depression or sleep disorders. Type of education, financial status and family support were significantly correlated with the prevalence of depression and sleep disorders. No correlation was observed between the exacerbation of vision disorders and enhanced depressive symptoms and insomnia. However, such correlation was noted with subjective stress reactions. Conclusions. Since patients with AMD are at a greater risk of sleep disorders and depression they should remain under professional care of a multidisciplinary team, including an ophthalmologist, a family doctor, a psychiatrist and a psychologist.
Wprowadzenie. Zwyrodnienie plamki żółtej związane z wiekiem (AMD, Age Related Macular Degeneration) jest schorzeniem narządu wzroku, które istotnie upośledza widzenie centralne. Celem badania było: (1) określenie częstości występowania zaburzeń snu oraz objawów depresyjnych u pacjentów z AMD, (2) zbadanie zależności pomiędzy objawami depresyjnymi i bezsennością a wybranymi danymi demograficznymi, (3) oszacowanie korelacji pomiędzy pogarszaniem się jakości widzenia a objawami depresyjnymi i zaburzeniami snu. Materiał i metody. W badaniu wzięło udział 105 pacjentów, kobiet i mężczyzn w wieku od 45 do 88 lat. Pacjenci poproszeni zostali o wypełnienie autorskiej zwalidowanej ankiety , skali depresji Becka oraz Ateńskiej Skali Bezsenności. Wyniki. Stwierdzono, że na bezsenność cierpi 71% respondentów, natomiast objawy depresji występują u 70% badanych. Wiek badanych, czas od postawienia diagnozy, stan cywilny oraz status zawodowy nie były związane z zaburzeniami depresyjnymi oraz snu. Rodzaj wykształcania, sytuacja materialna oraz wsparcie ze strony najbliższych (rodziny) były istotnie skorelowane z częstością występowania zaburzeń depresyjnych oraz snu. Nie stwierdzono korelacji pomiędzy narastaniem zaburzeń jakości widzenia a nasileniem objawów depresyjnych i bezsennością, natomiast taką zależność zaobserwowano w odniesieniu do subiektywnej reakcji stresowej. Wnioski. Chorzy na AMD są grupą pacjentów podwyższonego ryzyka wystąpienia zaburzeń snu oraz rozwoju depresji i w związku z tym powinni zostać objęci opieką wielodyscyplinarnego zespołu, w którym oprócz lekarza okulisty powinien znaleźć się lekarz rodzinny, psychiatra oraz psycholog.
Źródło:
Health Problems of Civilization; 2018, 12, 4; 255-264
2353-6942
2354-0265
Pojawia się w:
Health Problems of Civilization
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fabrication of SbSI Photonic Crystals
Autorzy:
Starczewska, A.
Szperlich, P.
Nowak, M.
Bednarczyk, I.
Bodzenta, J.
Szala, J.
Powiązania:
https://bibliotekanauki.pl/articles/1376062.pdf
Data publikacji:
2014-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
42.70.Qs
77.84.-s
78.40.Fy
Opis:
Semiconducting ferroelectric antimony sulfoiodide (SbSI) photonic crystals were fabricated. The $SiO_{2}$ nanospheres were synthesized and gravity sedimented to obtain opal matrices. These opals were infiltrated with melted SbSI and etched in HF acid to produce inverted SbSI opals.
Źródło:
Acta Physica Polonica A; 2014, 126, 5; 1118-1120
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cadmium accumulation and localization in the leaves of two ecotypes of Dianthus carthusianorum differing in metal tolerance
Autorzy:
Wojcik, M.
Dresler, S.
Nowak, D.
Nowak, J.
Plak, A.
Hanaka, A.
Tukiendorf, A.
Powiązania:
https://bibliotekanauki.pl/articles/81214.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
conference
cadmium accumulation
localization
leaf
root
ecotype
Dianthus carthusianorum
metal tolerance
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 3
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rehydration of CTMA Modified DNA Powders Observed by NMR
Autorzy:
Harańczyk, H.
Kobierski, J.
Zalitacz, D.
Nowak, P.
Romanowicz, A.
Marzec, M.
Nizioł, J.
Hebda, E.
Pielichowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/1490149.pdf
Data publikacji:
2012-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
82.56.Na
Opis:
The rehydration of salmon sperm deoxyribonucleic acid (DNA) and cetyltrimethylammonium chloride $(C_{19}H_{42}ClN)$ complexes was observed using hydration kinetics, sorption isotherm, and high power proton relaxometry (at 30 MHz). The hydration kinetics shows (i) a very tightly bound water not removed by incubation over silica gel ($A_0^{h}$ = 0.061 ± 0.004), (ii) a tightly bound water saturating at $A_1^{h}$ = 0.039 ± 0.011, with the hydration time $t_1^{h}$ = (1.04 ± 0.21) h, a loosely bound water fraction (iii) with the hydration time $t_2^{h}$ = (19.1 ± 3.2) h and the contribution progressively increasing with the air humidity. For the hydration at $p//p_0$ = 100%, after $t_0$ = (152.6 ± 2.5) h of incubation the swelling process begins. The swelling time was $t_3^{h}$ = (12.5 ± 5.4) h, and the swelling amplitude $A_3^{h}$ = 0.140 ± 0.016. The sorption isotherm is sigmoidal in form and is fitted by the Dent model with the mass of water saturating primary binding sites Δ M/$m_0$ = 0.102 ± 0.021. Proton free induction decay is a superposition of the immobilized proton signal (Gaussian, with $T_{2S}$* ≈ 30 μs) and two liquid signal components coming from tightly bound ($T_{2 L_1}$* ≈ 100 μs) and loosely bound water fraction with the amplitude proportional to the mass of water added ($T_{2 L_2}$* ≈ 1000 μs).
Źródło:
Acta Physica Polonica A; 2012, 121, 2; 485-490
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Social and Institutional Dimensions of Axel Honneth’s Theory of Recognition (by Marcin J. Byczyński, 2021). A Book Review with a Contextual ‘Surplus’
Autorzy:
Nowak, Ewa
Powiązania:
https://bibliotekanauki.pl/articles/2141929.pdf
Data publikacji:
2022-07-28
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Opis:
The review addresses the recent monograph Social and Institutional Dimensions of Axel Honneth’s Theory of Recognition by Marcin J. Byczyński (Łódź University Press, Jurisprudence Series, Vol. 17/2021, pp. 1–273). Jakub Kloc-Konkołowicz was the external reviewer of the doctoral dissertation which gave rise to the book. The essential contributions of this book are discussed against the background of former and pioneering recognition research from the Polish context, including this by Jakub Kloc-Konkołowicz and Marek Siemek. In addition, they are supplemented by Hegel’s three rights of freedom and further vital themes. This provides the following review with a contextual ‘surplus.’ Byczyński’s monograph considerably advances an important Warsaw-Poznań research strand and is notable for its originality among the books devoted to Honneth’s Theory of Recognition.
Źródło:
Ethics in Progress; 2022, 13, 1; 155-167
2084-9257
Pojawia się w:
Ethics in Progress
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of real-time PCR for detection of Lawsonia intracellularis and Brachyspira hyodysenteriage in fecal samples from pigs
Autorzy:
Zmudzki, J.
Szczotka, A.
Podgorska, K.
Nowak, A.
Grzesiak, A.
Dors, A.
Pejsak, Z.
Powiązania:
https://bibliotekanauki.pl/articles/30775.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
The aim of the study was to develop and validate real-time PCR method for the quantification of Lawsonia intracellularis and Brachyspira hyodysenteriae in porcine feces. Before the optimization process was performed two different extraction methods were compared to select the more efficient one. Based on the results achieved at this stage the boiling procedure was rejected and a commercially available silica-membrane based method was chosen for further analysis. The primers and the Taqman probe for B. hyodysenteriae and L. intracellularis were based on the sequence of NADH oxidase gene and 16S rDNA gene, respectively. The detection limit of the real-time PCR for suspension of feces inoculated with B. hyodysenteriae and L. intracellularis was determined to be 1.5x103 CFU/ml and 6.5x101 CFU/ml, respectively. The results of this study demonstrate that our real-time PCR is able to detect low number of B. hyodysenteriae and L. intracellularis cells which is satisfying in routine diagnosis of swine dysentery and proliferative enteropathy. Therefore, it is possible to identify both subclinically infected pigs and those representing an acute form of mentioned diseases. In summary, the quantitative real-time PCR is useful for routine diagnosis of L. intracellularis and B. hyodysenteriae. Compared to conventional PCR, the new validated quantification method based on real-time PCR is fast and with reduced risk of laboratory contamination. The novel technique is specific and even more sensitive than the previously used one. Furthermore, the new real-time PCR enables quick detection and quantification of both pathogens in fecal samples, which helps to estimate the health status of a pig herd.
Źródło:
Polish Journal of Veterinary Sciences; 2012, 15, 2
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On the mathematical modelling and optimization of foil consumption for cylindrical bale wrapping
Autorzy:
Stankiewicz, A.
Stępniewski, A. A.
Nowak, J.
Powiązania:
https://bibliotekanauki.pl/articles/411265.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Oddział w Lublinie PAN
Tematy:
baled silage
cylindrical bale
mathematical model
stretch foil consumption
optimization
Opis:
Aspects of mathematical modelling of wrapping round (i.e. cylindrical) bale related to the optimization of foil consumption are considered for individual bales of agricultural materials wrapped in plastic foil. The article details the mathematical description of bale wrapping, while also identifying both some solved problems and a few open ones, which can be solved to optimize the foil consumption. Mechanical properties of the sealing foil characterized by its Poisson ratio, arbitrary foil and bale size dimensions and overlapping width of subsequent wrapped foil strips were taken into account. After providing a basic understanding of how the foil is consumed in the course of wrapping process, the mathematical model for determining the number of entire foil wrappings is determined. Next the results of mathematical analysis are used for optimization purposes. The foil consumption per unit of the bale volume index is used as a measure of foil expenditure. Two problems of foil consumption optimization are stated and solved. The formulas for computing the optimal foil width and optimal bale size dimensions are derived and estimations of the solution errors are given. Computational results are presented and analyzed for exemplary bale silage.
Źródło:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes; 2016, 5, 3; 101-110
2084-5715
Pojawia się w:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wplyw MgSO₄·7 H₂O na plonowanie i zdrowotnosc buraka cukrowego
Autorzy:
Szymczak-Nowak, J
Sitarski, A
Stec, J
Powiązania:
https://bibliotekanauki.pl/articles/807264.pdf
Data publikacji:
2002
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
wartosc technologiczna
buraki cukrowe
mikroelementy
zdrowotnosc roslin
nawozenie
plonowanie
siarczan magnezu uwodniony
Opis:
The experiments were carried out in laboratory and greenhouse conditions (IHAR Bydgoszcz) and in field conditions (IHAR Bydgoszcz, ZD UMK Piwnice - kujawsko-pomorskie district and SHR Straszków - wielkopolskie district) in 2001. The influence of MgSO₄·7 H₂O with micronutrients (96,5 g Mg·kg⁻¹ DM, 3500 mg Mn·kg⁻¹, 3000 mg Cu·kg⁻¹, 2000 mg Zn·kg⁻¹, 500 mg B·kg⁻¹ i 100 mg Mo·kg⁻¹) on germination of seeds, health and weight of germs, field emergence, weight of plants in initial period of growth, health of sugar beet, yield and processing quality of roots was examined. MgSO₄·7 H₂O was introduced into pellet in dose 0.5 kg and 1.0 kg on 100 kg of seeds and used as a spray (first half of July, 5% solution, 300 l of water per hectar). MgSO₄·7 H₂O, in laboratory examinations, decreased germ fresh weight in comparison to the control, but showed no influence on seed germination and germ health. Field emergence, plant population, plant weight in initial period of growth, root and recoverable sugar yield were better on plots with MgSO₄·7 H₂O. This fertilizer had good influence on sugar beet leaf health.
W 2001 r., w doświadczeniach prowadzonych w warunkach laboratoryjnych, szklarniowych i polowych na polu doświadczalnym w IHAR w Bydgoszczy, w ZD UMK w Piwnicach (woj. kujawsko-pomorskie) oraz w SHR w Straszkowie (woj. wielkopolskie) badano wpływ MgSO₄·7 H₂O z mikroelementami (96,5 g Mg·kg⁻¹ s.m., 3500 mg Mn·kg⁻¹, 3000 mg Cu·kg⁻¹, 2000 mg Zn·kg⁻¹, 500 mg B·kg⁻¹ i 100 mg Mo·kg⁻¹) na kiełkowanie nasion, zdrowotność i masę kiełków, wschody, masę roślin w początkowym okresie wzrostu, plon, jakość technologiczną oraz zdrowotność buraka cukrowego. MgSO₄·7 H₂O wprowadzono do otoczki w dawkach 0,5 kg i 1,0 kg na 100 kg nasion oraz zastosowano nalistnie (pierwsza połowa lipca) w formie 5,0% roztworu w ilości 300,0 1 cieczy użytkowej na 1,0 ha. MgSO₄·7 H₂O nie miał wpływu na zdolność kiełkowania nasion i zdrowotność kiełków, wpłynął natomiast na obniżenie świeżej masy kiełków buraka cukrowego w porównaniu do kombinacji kontrolnej. Polowa zdolność wschodów, obsada buraka, masa roślin w początkowym okresie wzrostu oraz plon korzeni i cukru technologicznego były wyższe na kombinacjach z MgSO₄·7 H₂O. Zastosowanie MgSO₄·7 H₂O wpłynęło korzystnie na zdrowotność liści buraka.
Źródło:
Zeszyty Problemowe Postępów Nauk Rolniczych; 2002, 484, 2; 691-700
0084-5477
Pojawia się w:
Zeszyty Problemowe Postępów Nauk Rolniczych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Crash tests of a car with modified road barriers
Autorzy:
Nowak, J.
Niezgoda, T.
Kiczko, A.
Gieleta, R.
Powiązania:
https://bibliotekanauki.pl/articles/247421.pdf
Data publikacji:
2010
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
transport
road transport
car - road barrier system
crash test
experimental examinations
Opis:
In this article experimental results of a car impact into a modified road barrier are presented. For crash tests a modified protection barrier SP-04, composed of guide poles, type B, and bridge posts IPE140, was chosen. The road barrier modification lies in using additional panels absorbing the impact energy. The protective panels, subjected to examination, consisted of a metal or a composite (laminate, glass-polyester) shield in which the f o amed aluminium or polyurethane foam was a filling. The Suzuki Swift car s were prepared for the crash tests. Tests were carried out at the Automotive Industry Institute (PIMOT) in Warsaw, with the use o f a test sample of the road barrier. For the safety sake the car's speed during the experimental examinations was limited to 50 km/h. Moreover, the vehicle hits perpendicularly in a properly modified road barrier's sector. During the test a registration of acceleration was carried out by the acceleration sensors placed in the car (among others in the centre of gravity and over the rear axle of a car). A crash test course of the system C-G was registered with the use of two cameras for fast shooting (Fantom v12). An image was recorded with the resolution of 1280 x 800 pixels and with frequency of 1000 shots per second. The shot exposure time equalled to 250 microseconds.
Źródło:
Journal of KONES; 2010, 17, 3; 333-339
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Exhaust emission measurements in the development of sustainable road transport
Autorzy:
Merkisz, J.
Merkisz-Guranowska, A.
Pielecha, J.
Nowak, M.
Jacyna, M.
Lewczuk, K.
Żak, J.
Powiązania:
https://bibliotekanauki.pl/articles/244259.pdf
Data publikacji:
2013
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
exhaust emission
noise emission
real road conditions
sustainable transport
health protection
Opis:
Economic development of nations leads to a higher living comfort of the society. Rich societies want to move safely and independently and demand immediate availability of purchased goods or – in the case of Internet shopping – delivery in the shortest possible time. Such an approach facilitates a continuous growth in the number of road vehicles. At the current level of technology advancement, an increasing number of vehicles results in a growth of the consumption of fossil fuels, which entails increased exhaust emissions and that, in turn, has a negative impact on the health of the living organisms. Another negative consequence of an increased number of vehicles (increased road congestion) is the emission of noise. This problem is particularly significant in large agglomerations where people are surrounded by moving vehicles. This paper presents the extent of influence of the automotive industry on the natural environment and the extent of changes in vehicle design and organization of road infrastructure that were instituted to reduce the transport’s environmental burden. The further part of the paper presents a definition of the development of sustainable transport, its advantages and hurdles that we may encounter when modernizing a transport system. Subsequently in the paper, the measurements under actual vehicle operating conditions were described together with the possibilities of analysis of the research results and the advantages resulting from such an approach during the assessment of the impact of the automotive industry on the natural environment.
Źródło:
Journal of KONES; 2013, 20, 4; 277-284
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thyroid functioning, adipocytokines, bone turnover and vitamin D - review of literature
Autorzy:
Koszowska, A.
Brończyk-Puzoń, A.
Dittfeld, A.
Nowak, J.
Kulik-Kupka, K.
Zubelewicz-Szkodzińska, B.
Powiązania:
https://bibliotekanauki.pl/articles/1917694.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Medyczny w Białymstoku
Tematy:
Thyroid gland
obesity
adipokines
vitamin D
Opis:
The most common public health problems include, among others, overweight, obesity, and cardiovascular diseases. In addition, the number of people with thyroid disturbances is still growing. Thyroid abnormalities can lead to many metabolic dysfunctions, including secondary osteoporosis, alterations in body mass, lipid profile, and insulin resistance. Recently, the studies have been focused on the connections between thyroid gland function, obesity, metabolic syndrome and cardiovascular diseases, as well as bone turnover. Fatty tissue plays an important role in whole body homeostasis. Adipose tissue hormones, such as leptin, resistin and adiponectin are proteins having immunomodulatory lproperties, and their balance is needed to control immune response, as well as inflammation processes. The following article constitutes a review of literature concerning thyroid function with regard to adipocytokines and vitamin D, as well as the influence of this gland on the skeletal system. For this purpose, Medline Pub Med base and Google Scholar were used. All the citied studies in this review article underline how much should be done to achieve more efficient treatment of thyroid disorders, specifically, how to prevent its complications, for instance, osteoporosis, over-weight, obesity or cardiovascular diseases.
Źródło:
Progress in Health Sciences; 2016, 6(1); 188-196
2083-1617
Pojawia się w:
Progress in Health Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of short-term rapid ventricular pacing followed by pacing interruption on arterial blood pressure in healthy pigs and pigs with tachycardiomyopathy
Autorzy:
Skrzypczak, P.
Zysko, D.
Paslawska, U.
Noszczyk-Nowak, A.
Janiszewski, A.
Gajek, J.
Nicpon, J.
Kiczak, L.
Bania, J.
Zacharski, M.
Tomaszek, A.
Jankowska, E.A.
Ponikowski, P.
Witkiewicz, W.
Powiązania:
https://bibliotekanauki.pl/articles/32380.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
Ventricular tachycardia may lead to haemodynamic deterioration and, in the case of long term persistence, is associated with the development of tachycardiomyopathy. The effect of ventricular tachycardia on haemodynamics in individuals with tachycardiomyopathy, but being in sinus rhythm has not been studied. Rapid ventricular pacing is a model of ventricular tachycardia. The aim of this study was to determine the effect of rapid ventricular pacing on blood pressure in healthy animals and those with tachycardiomyopathy. A total of 66 animals were studied: 32 in the control group and 34 in the study group. The results of two groups of examinations were compared: the first performed in healthy animals (133 examinations) and the second performed in animals paced for at least one month (77 examinations). Blood pressure measurements were taken during chronic pacing - 20 min after onset of general anaesthesia, in baseline conditions (20 min after pacing cessation or 20 min after onset of general anaesthesia in healthy animals) and immediately after short-term rapid pacing. In baseline conditions significantly higher systolic and diastolic blood pressure was found in healthy animals than in those with tachycardiomyopathy. During an event of rapid ventricular pacing, a significant decrease in systolic and diastolic blood pressure was found in both groups of animals. In the group of chronically paced animals the blood pressure was lower just after restarting ventricular pacing than during chronic pacing. Cardiovascular adaptation to ventricular tachycardia develops with the length of its duration. Relapse of ventricular tachycardia leads to a blood pressure decrease more pronounced than during chronic ventricular pacing.
Źródło:
Polish Journal of Veterinary Sciences; 2014, 17, 1
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nadtlenoazotyn - silny biologiczny utleniacz
Peroxynitrite a strong biological oxidant
Autorzy:
Bijak, M.
Ponczek, M. B.
Saluk, J.
Chabielska, M.
Stępniak, J.
Nowak, P.
Powiązania:
https://bibliotekanauki.pl/articles/172573.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Chemiczne
Tematy:
nadtlenoazotyn
stres oksydacyjny
3-nitrotyrozyna
peroxynitrite
oxidative stress
3-nitrotyrosine
Opis:
As demonstrated in recent years, one of the major factors of oxidative stress, generated in the circulatory system, in both acute and chronic pathological conditions, is peroxynitrite (ONOO –) [4]. Peroxynitrite is a strong biological oxidant and nitrating compound, generated in vivo from a rapid reaction of two relatively less reactive, but commonly found, of free radicals: nitrogen monoxide (NO ) and superoxide (O2–) [8]. This reaction occurs spontaneously and is not catalyzed by any enzyme. A fundamental reaction of ONOO – in biological systems is its fast reaction with carbon dioxide (k = 5,7 ź 104 M–1 s–1) and yields a short-lived intermediate, nitrosoperoxycarbonate (ONOOCO 2 –), which homolyzes leads to the formation of carbonate (CO 3–) and nitrogen dioxide (NO 2) radicals (yield ~35%) [29, 30] (Fig. 1), which are one-electron oxidants. ONOO – is responsible for oxidative modifications in a wide variety of biomolecules and is capable to induce of nitrative changes in sulfur and aromatic amino acids, especially 3-nitrotyrosine and dityrosine formation [17] (Fig. 2). This article describes the formation, reactivity and biological action of peroxynitrite.
Źródło:
Wiadomości Chemiczne; 2012, 66, 7-8; 623-635
0043-5104
2300-0295
Pojawia się w:
Wiadomości Chemiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nickel Composite Coatings Reinforced Nano SiC Particles
Autorzy:
Nowak, M.
Mizera, J.
Kłyszewski, A.
Dobkowska, A.
Boczkal, S.
Kozik, A.
Koprowski, P.
Powiązania:
https://bibliotekanauki.pl/articles/356955.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
nanoparticles
organic additives
SiC
composite coatings
nickel coatings
zeta potential
Opis:
The paper presents the results of the electrodeposition of nickel composite coatings reinforced with the nano size SiC ceramic particles. The type and size of the ceramic particles or organic additives used play a important role during electrodeposition processes. A Watts type galvanic bath with various organic additives was used. These additives were: 2-sulfobenzoic acid imide, dioctyl sulfosuccinate sodium salt (DSS), sodium dodecyl sulfate, tris (hydroxymethyl) aminomethane and hexamethyldisilizane. The nickel composite coating was electrodeposited on a 2xxx aluminum alloy series substrate (EN-AW 2017) with zinc interlayer. The work concerns the determination of the impact of the change in the zeta potential of SiC nanoceramic particles used on properties of composite coatings (wear resistance, corrosion, etc.). The paper characterized the composite nickel coatings on aluminum alloy using SEM techniques, wear resistance tests by TABER method and coating adhesion to the substrate using the “scratch test” method. The corrosion resistance of coatings was also tested using electrochemical methods. The research allowed to determine the effect of SiC nanoceramic particle size on the value of the zeta potential in the model KCl solution.
Źródło:
Archives of Metallurgy and Materials; 2020, 65, 2; 935-940
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Palynology of the upper Visean Paprotnia Beds (Bardo Unit, Polish Sudetes)
Autorzy:
Górecka-Nowak, A.
Muszer, J.
Powiązania:
https://bibliotekanauki.pl/articles/2059156.pdf
Data publikacji:
2011
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Polska
Sudetes
Upper Visean
palynostratigraphy
miospore colours
palynofacies
Opis:
The siliciclastic rocks of the Paprotnia Beds from the Bardo Unit (Polish Sudetes) provide abundant and diverse palynological material. The miospore assemblages recovered allow distinction of two miospore biozones. The Tripartites vetustus–Rotaspora fracta (VF) Biozone was recognized in the lower and the middle parts of the section. In its upper part the Cingulizonates capistratus (Cc) Subbiozone, the lower part of the Cingulizonates capistratus–Bellispores nitidus (CN) Biozone was distinguished. These results indicate that the rocks of the Paprotnia section, considered earlier on the basis of biostratigraphic and radiometric data as upper Asbian, should be assigned to the upper Asbian and Brigantian. The location of the Asbian/Brigantian boundary and the possible occurrence of a gap in the Brigantian part of the section are discussed. Palynofacies observations of miospore preservation and frequency provided additional information, which confirm the gradual shallowing of the environment of deposition from offshore to onshore. Thermal maturity assessment of organic matter, based on miospore colour, indicates early mature and mature stages of organic matter thermal alteration.
Źródło:
Geological Quarterly; 2011, 55, 2; 165-180
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Microbial hazards reduction during creamy cream cheese production
Autorzy:
Miarka, D.
Żukowska, J.
Siwek, A.
Nowacka, J.
Nowak, D.
Powiązania:
https://bibliotekanauki.pl/articles/111684.pdf
Data publikacji:
2015
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
food safety
quality of food
microbiological hazard
bezpieczeństwo żywności
jakość żywności
zagrożenie mikrobiologiczne
Opis:
The purpose of the work was to identify the hazards relevant to the production of safe food and to assess the effects of a possible infection. The paper presents the microbiological hazards that can occur throughout the production of creamy cream cheese and indicates the means to their minimization or elimination. The analysis of microbiological hazards showed that in the manufacturing process of the type of cheese mentioned, there are a few critical steps that should be specifically overseen. In order to acquire a high quality product it is important to monitor a quality of raw material, the parameters of pasteurization and souring, temperature of product packaging, storage conditions of the finished product and maintain hygiene throughout the production. The process of heat treatment, which is pasteurization, is a critical step (critical control points - CCP) for the whole process. Monitoring this stage and consistent adherence to Operational Pre-Condition Programs at the thermisation and centrifuging and later packaging, guarantees a safe product and its long shelf life.
Źródło:
Production Engineering Archives; 2015, 6, 1; 39-44
2353-5156
2353-7779
Pojawia się w:
Production Engineering Archives
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Oddzialywanie niekontrolowanych wysypisk odpadow na wlasciwosci chemiczne oraz aktywnosc mikrobiologiczna gleby
Autorzy:
Niedzwiedzki, E
Nowak, A
Nowak, J
Klodka, D
Meller, E
Smolik, B
Powiązania:
https://bibliotekanauki.pl/articles/798266.pdf
Data publikacji:
2004
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
wlasciwosci chemiczne
grunty orne
Rownina Gumieniecka
wysypiska nielegalne
wysypiska odpadow
gleby
metale ciezkie
zanieczyszczenia gleb
aktywnosc mikrobiologiczna
Opis:
W wyniku przeprowadzonych badań właściwości chemicznych i biologicznych gleb spod niekontrolowanych wysypisk odpadów w porównaniu z przylegającymi do nich glebami uprawnymi stwierdzono zwiększoną koncentrację niepożądanych domieszek, w tym zwiększenie zawartości metali ciężkich. W większości obiektów w glebach spod wysypisk nastąpiło wyraźne zwiększenie liczebność bakterii, promieniowców oraz grzybów (średnio w glebie spod wysypisk ilość ta była dwukrotnie większa niż w glebie z pól uprawnych). Również w glebie spod wysypisk odpadów nastąpił wzrost 40-70% liczebności organizmów lipolitycznych, amylolitycznych oraz bardzo duży (trzykrotny) proteolitycznych. Odpady na wysypiskach niekontrolowanych przyczyniły się w bardzo dużym stopniu do zmiany (inhibicji bądź stymulacji) aktywności badanych enzymów glebowych (fosfataz, dehydrogenaz i ureazy).
Chemical properties and biological activity of the soils from unauthorized dumping grounds were studied and compared with the adjacent arable land. Increased concentration of undesirable compounds, was found, heavy metals inclusive. In most experimental combinations the counts of bacteria, actinomycetes and fungi were significantly higher (in average twice) in soil from unauthorized dumping grounds than in the soils from arable fields. Moreover, in the soil from unauthorized dumping grounds, the count of lipolytic and amylolytic microorganisms increased by about 40-70%, while the count of proteolytic microorganisms almost three times. Wastes on unauthorized dumping grounds strongly differentiated (inhibited or stimulated) the activity of examined soil enzymes (phosphatases, dehydrogenases and urease).
Źródło:
Zeszyty Problemowe Postępów Nauk Rolniczych; 2004, 501; 325-334
0084-5477
Pojawia się w:
Zeszyty Problemowe Postępów Nauk Rolniczych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bovine neonatal pancytopenia in calves in Poland
Autorzy:
Jaskowski, J.M.
Polak, M.P.
Marszalek, A.
Nowak, K.
Frackowiak, H.
Olechnowicz, J.
Powiązania:
https://bibliotekanauki.pl/articles/30613.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
bovine neonatal pancytopenia
calf
symptom
bleeding
diathesis
thrombocytopenia
ecchymosis
etiology
Polska
Opis:
Bovine neonatal pancytopenia (BNP), a newly emerged syndrome of discussed etiology in calves, has been diagnosed since 2006. Here we describe first cases of BNP in Poland. Between September 2008 and April 2011, 62 cases of BNP were diagnosed in dairy calves. Bleeding skin lesions were mostly pronounced in summer and early autumn. Severe thrombocytopenia was observed in all sick animals. All calves came from herds vaccinated against BVDV infection with PregSure BVD vaccine (Pfizer). Substitution of colostrum from dams of BNP positive calves with colostrum from dams from herds free of BNP was the only effective measure to avoid new cases in affected herds.
Źródło:
Polish Journal of Veterinary Sciences; 2012, 15, 3
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical analyses of ceramic/metal ballistic panels subjected to projectile impact
Autorzy:
Morka, A.
Nowak, J.
Powiązania:
https://bibliotekanauki.pl/articles/242960.pdf
Data publikacji:
2012
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
computational mechanics
impact problem
armour perforation
ballistic resistance
ceramic armour
Opis:
The paper concerns research and development on modern, ceramic-based, protective layers used in the armour of tanks, combat vehicles and aeroplanes. A task of ceramic panels is reduction and dispersion of localized kinetic energy before a projectile or its fragment approaches the interior of protected object. The numerical investigations have been performed to determine the ballistic resistance of ceramic/metal panels subjected to projectile impact. The impact of the 7.62mm armour-piercing projectile on the ceramic elements backed by a metal plate was analyzed. The tested panels were composed of a ceramic layer (Al2O3, SiC or B4C) and a metal layer (7017 aluminium alloy, Armox 500T steel or Ti6Al-4 titanium alloy). Different shapes of ceramic elements were analyzed, including hemispheres and pyramids, with respect to standard flat tiles. The influence of the impact point location was also taken into considerations. The computer simulations were performed with the Finite Element Method implemented in LS-DYNA code. Full 3D models of the projectile and targets were developed with strain rate and temperature dependent material constitutive relations. The conclusions presented in the paper can be applied to develop modern impact protection panels in which the appropriate balance between the mass and protection level must be accomplished.
Źródło:
Journal of KONES; 2012, 19, 4; 465-472
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Potamogeton pusillus agg. in Tajikistan (Middle Asia)
Autorzy:
Nobis, M.
Nowak, A.
Zalewska-Galosz, J.
Powiązania:
https://bibliotekanauki.pl/articles/59299.pdf
Data publikacji:
2010
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
Potamogeton pusillus
Potamogeton berchtoldii
new species
flora
Tajikistan
Middle Asia
Asia
Opis:
The locality of Potamogeton berchtoldii Fieber, the new species to the flora of Tajikistan (Middle Asia), together with its ecological conditions are presented. Additionally, the list of herbarium specimens of P. pusillus L. s. stricto gathered in Tajikistan and few specimens of P. berchtoldii collected from the area of adjacent countries are also provided. Taxonomical position of the species within the Potamogeton pusillus aggregation, the main morphological features of both taxa and possibility of finding other localities are discussed.
Źródło:
Acta Societatis Botanicorum Poloniae; 2010, 79, 3
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of additional foil wraps on the tightness of the packaging of bales
Autorzy:
Stępniewski, A. A.
Nowak, J.
Powiązania:
https://bibliotekanauki.pl/articles/972941.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Oddział w Lublinie PAN
Tematy:
baled silage
cylindrical bale
stretch film
tightness
mathematical model
simulation model
Opis:
The work analyzed the effect of additional wraps on the number of layers and thus the tightness of the material under protection. It was assumed that all the overlaps of each two consecutive wraps are the same, and each additional wrap causes the same increase of all the tabs. The mechanical properties of the film and its dimensions were taken into account. We have written our own simulation program that allows us to calculate the percentage of a given number of film layers on the side of the bale and the visualization of the distribution of layers in its cross-section. Calculation examples have been provided. Conclusions and suggestions resulting from the obtained simulation results have been formulated.
Źródło:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes; 2018, 7, 1; 145-150
2084-5715
Pojawia się w:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of additional foil wraps on the tightness of the packaging of bales
Autorzy:
Stępniewski, A. A.
Nowak, J.
Powiązania:
https://bibliotekanauki.pl/articles/972982.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Oddział w Lublinie PAN
Tematy:
baled silage
cylindrical bale
stretch film
tightness
mathematical model
simulation model
Opis:
The work analyzed the effect of additional wraps on the number of layers and thus the tightness of the material under protection. It was assumed that all the overlaps of each two consecutive wraps are the same, and each additional wrap causes the same increase of all the tabs. The mechanical properties of the film and its dimensions were taken into account. We have written our own simulation program that allows us to calculate the percentage of a given number of film layers on the side of the bale and the visualization of the distribution of layers in its cross-section. Calculation examples have been provided. Conclusions and suggestions resulting from the obtained simulation results have been formulated.
Źródło:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes; 2018, 7, 1; 145-150
2084-5715
Pojawia się w:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelowanie procesu tlenowego rozkładu kiszonek
Modelling of the oxygen decomposition process of silage
Autorzy:
Nowak, J.
Przystupa, W.
Bochniak, A.
Powiązania:
https://bibliotekanauki.pl/articles/291119.pdf
Data publikacji:
2006
Wydawca:
Polskie Towarzystwo Inżynierii Rolniczej
Tematy:
kiszonka
model matematyczny
infiltracja
silage
mathematical model
infiltration
Opis:
Analizowano wpływ wybranych warunków początkowych na zmiany stężenia tlenu i koncentracji drożdży w odkrytej warstwie kiszonki bezpośrednio po otwarciu silosu. W tym celu wykorzystano prosty model matematyczny tlenowego rozkładu kiszonek, który uwzględnia zmiany przestrzenno-czasowe tlenu i temperatury opisane równaniami dyfuzji.
The impact of selected initial conditions on changes in oxygen concentration and yeast concentration in open silage layer immediately after opening the silo was analyzed. A simple mathematical model of oxygen decomposition of silage was used for this purpose, taking into account spatial and temporal changes of oxygen and temperature, described by using diffusion equations.
Źródło:
Inżynieria Rolnicza; 2006, R. 10, nr 6(81), 6(81); 91-99
1429-7264
Pojawia się w:
Inżynieria Rolnicza
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Conservation of Primula farinosa in Poland with respect to the genetic structure of populations
Autorzy:
Gajewski, Z.
Boron, P.
Lenart-Boron, A.
Nowak, B.
Sitek, E.
Mitka, J.
Powiązania:
https://bibliotekanauki.pl/articles/58418.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Botaniczne
Opis:
The bird’s-eye primrose (Primula farinosa L.) is an endangered species in Poland. The sole remaining, and critically endangered, population of approximately 300 flowering plants is located in the Beskid Sądecki Mountains (Jaworki, Poland). The genetic investigation was performed using highly variable microsatellite markers on a total of four populations: the Polish population and its three nearest known Slovak counterparts. We hypothesize that the Polish population is a relic of the previously much wider Central European mountain/lowland range and is thus genetically distinct from the rest of the Slovak stock. Clarification of this issue is needed before active protection interventions such as artificial supplementation can be carried out. Our results, particularly those from STRUCTURE Bayesian clustering, showed clear population structure within the dataset: all three Slovak populations were dominated by one genetic group, while the Polish population comprised mostly individuals dominated by the second genetic group. Only limited gene flow was observed between the Polish and Slovak populations. This demonstrates the distinct genetic makeup of the Jaworki population, which is probably the result of prolonged isolation from the rest of the P. farinosa range and admixture of genes from various lineages. Their origin could be determined by including plant material from the rest of the P. farinosa range, i.e., Scandinavian, Baltic, and Alpine/Carpathian locations, in a future study. The immediate practical application of our results is the recommendation that all supplementation interventions to the Jaworki population must be limited to plants produced from locally collected seeds.
Źródło:
Acta Societatis Botanicorum Poloniae; 2018, 87, 2
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł

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