Autor: Polak, I. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Notatki przyrodnicze. Ptaki
Autorzy:: Blonski, W
Sulek, J.
Polak, M.
Wilniewczyc, P.
Maniarski, R.
Kaliszewski, I.
Powiązania:: https://bibliotekanauki.pl/articles/32736.pdf
Data publikacji:: 1998
Wydawca:: Mazowiecko-Świętokrzyskie Towarzystwo Ornitologiczne
Tematy:: bernikla kanadyjska
ptaki
Branta canadensis
rybitwa bialowasa
Chlidonias hybridus
Pinicola enucleator
Pandion haliaetus
gniazdowanie
pierwszy pojaw
rybolow
Gory Swietokrzyskie
Larus ichthyaetus
mewa orlica
luskowiec
mewa trojpalczasta
Plock
Starachowice
Rissa tridactyla
Źródło:: Kulon; 1998, 03, 1; 95-100
1427-3098
Pojawia się w:: Kulon
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Study on changing patterns of reproductive behaviours due to maternal features and place of residence in Poland during 1995–2014
Autorzy:: Genowska, A.
Szafraniec, K.
Polak, M.
Szpak, A.
Walecka, I.
Owoc, J.
Powiązania:: https://bibliotekanauki.pl/articles/2081598.pdf
Data publikacji:: 2018
Wydawca:: Instytut Medycyny Wsi
Tematy:: fertility
inequality in procreation
maternal age
socio-economic status
marital status
rural-urban
Polska
Opis:: Introduction. The sharp decline in the total fertility rate in Poland coincided with broader socio-economic changes, which resulted in its reduction to the lowest level observed among the countries of Central and Eastern Europe. Objective. The aim of the study was to investigate and evaluate the changing patterns of reproductive behaviour in rural and urban areas, depending on the demographic and socio-economic features in Poland. Materials and method. Information about live births in Poland in the years 1995–2014 were obtained from the Central Statistical Office. Registered cases of live births in rural and urban areas were analyzed considering the maternal features (age, marital status, main source of income). To evaluate the changes in fertility and comparisons between rural and urban areas, Joinpoint Regresssion was used. Results. In 1995–2014, a shift in the age of highest fertility from 20–24 years to 25–29 years was observed. This occurred at the same time as a reduction in the fertility rate per 1,000 women aged 15–29 years, more pronounced in rural areas (95.8 to 60.0) than in urban areas (63.4 to 51.5), while in women aged 30–49 years, a faster increase in fertility was observed in urban areas (16.4 to 32.0) than in rural areas (27.5–29.2). Fertility trends between rural and urban areas differed significantly. A significant increase in live births for employed mothers was shown mainly in 2005–2009; later, the growth rate in rural areas was slower and in urban areas the growth trend stopped. Conclusion. The postponement of births and reduction of fertility in women aged 15–29 requires active measures aimed at creating favourable conditions for achieving economic independence for the younger generation, as well as combining work with raising children, especially in rural areas.
Źródło:: Annals of Agricultural and Environmental Medicine; 2018, 25, 1; 137-144
1232-1966
Pojawia się w:: Annals of Agricultural and Environmental Medicine
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Magnetic and Structural Study of $Mn_{1.15}Fe_{0.85}P_{1-x}Ge_{x}$ (0.25 < x < 0.32) Magnetocaloric Compounds Prepared by Arc Melting
Autorzy:: Hawelek, L.
Wlodarczyk, P.
Zackiewicz, P.
Polak, M.
Kaminska, M.
Puźniak, R.
Radelytskyi, I.
Kolano-Burian, A.
Powiązania:: https://bibliotekanauki.pl/articles/1402326.pdf
Data publikacji:: 2015-07
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 75.30.Sg
75.30.Kz
61.05.C-
61.66.Fn
Opis:: Recently, room temperature magnetocaloric materials increasingly attracted attention in the development of magnetic refrigerators. In this paper, an effect of P/Ge substitution on the magnetic phase transition in the series of $Mn_{1.15}Fe_{0.85}P_{1-x}Ge_{x}$ (0.25 < x < 0.32) magnetocaloric compounds prepared by the arc melting technique and subsequent homogenization process has been studied. Calorimetric and magnetization results show that the temperature of structural phase transition coincide with the Curie temperature and fall within the temperature range 270-355 K. The magnetic entropy change reaches the maximum value for the compound with x=0.28 and equals to 32 J/(kg K) for the magnetic field change of 5 T. The adiabatic temperature change for the same sample, measured using magnetocalorimeter, is equal to 1.2 K for the magnetic field change of 1.7 T. It was found that the increase of Ge content in the sample causes weakening of first order magnetic transition, which is manifested by the lowering difference in transition temperature measured in two zero-field-cooling and field-cooled-cooling regimes.
Źródło:: Acta Physica Polonica A; 2015, 128, 1; 76-80
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki