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Wyświetlanie 1-5 z 5
Tytuł:
Efficacy evaluation of two live virus vaccines against an emerging pseudorabies virus variant
Autorzy:
Wang, M.
Wang, L.
Zhao, Q.
Powiązania:
https://bibliotekanauki.pl/articles/2087402.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
pseudorabies virus (PRV)
variant TJ
live virus vaccines
cross-protection
Źródło:
Polish Journal of Veterinary Sciences; 2019, 4; 639-645
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The birth of the first child as a positive event in the lives of young parents
Autorzy:
Wójtowicz-Dacka, Małgorzata
Powiązania:
https://bibliotekanauki.pl/articles/430768.pdf
Data publikacji:
2014-06-01
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
knowledge about development
satisfaction with live and being parent
positive event
Opis:
The aim of the study was to research the relatioship between level of knowledge possessed by the contemporary parents about the psychological needs of small children and their perception of the birth of their child as a positive event. Study involved 90 parents, aged 25-30, who are currently raising young children up to 1 year of age. The analyses that were carried out verified the existence of such a correlation, but the event of birth is not a positive event for all parents. In summary, the sense of satisfaction with the birth of a child and perceiving this situation as a positive event is especially high among women and those with a higher education. For men and for parents with a low level of education, it can become a positive experience if they raise their level of knowledge about the needs of small children.
Źródło:
Polish Psychological Bulletin; 2014, 45, 2; 103-111
0079-2993
Pojawia się w:
Polish Psychological Bulletin
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
E-learning in College on the Example of Academy of Special Education
Autorzy:
Romaniuk, M. W.
Powiązania:
https://bibliotekanauki.pl/articles/226108.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
e-learning
information technology
distance learning
Windows Live Movie Maker
ADDIE
students
Opis:
This article is a report on the research on the perception of e-learning conducted among students of the first year of full-time studies at the Maria Grzegorzewska Academy of Special Education in Warsaw who were participating in the information technology course. The aim of this study was to evaluate the e-learning course of Windows Live Movie Maker program intended to create movies prepared by the author and to gather the opinions of students on e-learning. The author presents the most popular model for creating e-learning courses and suggests programs in which teachers can create their training. The author acknowledges a course he created as well received by students and advocates the implementation of this method of teaching in academic education.
Źródło:
International Journal of Electronics and Telecommunications; 2015, 61, 1; 25-29
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Selected aspects of the choice of live steam pressure in PWR nuclear power plant
Autorzy:
Laskowski, Rafał
Smyk, Adam
Jurkowski, Romuald
Ancé, Julien
Wołowicz, Marcin
Uzunow, Nikołaj
Powiązania:
https://bibliotekanauki.pl/articles/2134928.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
live steam
pressure
efficiency
power output
nuclear power plant
nuclear
power
plant
performance
entropy balance
Opis:
In commercially available generation III and III+ PWR (pressurized water reactor) reactors, pressure of steam produced in steam generators varies in a relatively wide range from 5.7 to 7.8 MPa. Therefore, it is important to ask which value of steam pressure should be used for a specific unit, taking into account different location conditions, the size of the power system and conditions of operation with other sources of electricity generation. The paper analyzes the effect of steam pressure at the outlet of a steam generator on the performance of a PWR nuclear power plant by presenting changes in gross and net power and efficiency of the unit for steam pressures in the range of 6.8 to 7.8 MPa. In order to determine losses in the thermal system of the PWR power plant, in particular those caused by flow resistance and live steam throttling between the steam generator and the turbine inlet, results concerning entropy generation in the thermal system of the power plant have been presented. A model of a nuclear power plant was developed using the Ebsilon software and validated based on data concerning the Olkiluoto Unit 3 EPR (evolutionary power reactor) power plant. The calculations in the model were done for design conditions and for a constant thermal power of the steam generator. Under nominal conditions of the Olkiluoto Unit 3 EPR power unit, steam pressure is about 7.8 MPa and the steam dryness fraction is 0.997. The analysis indicates that in the assumed range of live steam pressure the gross power output and efficiency increase by 32 MW and 0.735 percentage point, respectively, and the net power output and efficiency increase by 27.8 MW and 0.638 percentage point, respectively. In the case of all types of commercially available PWR reactors, water pressure in the primary circuit is in the range of 15.5−16.0 MPa. For such pressure, reducing the live steam pressure leads to a reduction in the efficiency of the unit. Although a higher steam pressure increases the efficiency of the system, it is necessary to take into account the limitations resulting from technical and economic criteria as well as operating conditions of the primary circuit, including the necessary DNBR (departure from nucleate boiling ratio) margin. For the above reasons, increasing the live steam pressure above 7.8 MPa (the value used in EPR units that have already been completed) is unjustified, as it is associated with higher costs of the steam generator and the high-pressure part of the turbine.
Źródło:
Archives of Thermodynamics; 2022, 43, 3; 85--109
1231-0956
2083-6023
Pojawia się w:
Archives of Thermodynamics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Prediction of meat quality from biopsy in live pigs with different RYR1 genotypes
Autorzy:
Kuciel, J
Urban, T.
Krenkova, L.
Powiązania:
https://bibliotekanauki.pl/articles/2042180.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
pig
correlation
RYR1 genotype
genotype
live pig
RYR1 gene
musculus longissimus lumborum
meat quality
biopsy
Źródło:
Journal of Applied Genetics; 2000, 41, 4; 267-274
1234-1983
Pojawia się w:
Journal of Applied Genetics
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

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