Autor: Brzozowska, J. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Adrian Jusupović, Kronika Halicko-Wołyńska (kronika Romanowiczów) w latopisarskiej kolekcji historycznej, Kraków–Warszawa, Instytut Historii im. Tadeusza Manteuffla Polskiej Akademii Nauki Wydawnictwo Avalon, 2019, ss. 204
Autorzy:: Leszka, Mirosław J.
Brzozowska, Zofia A.
Powiązania:: https://bibliotekanauki.pl/articles/2031509.pdf
Data publikacji:: 2019
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Źródło:: Slavia Orientalis; 2019, LXVIII, 4; 789-791
0037-6744
Pojawia się w:: Slavia Orientalis
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Isolation and characterization of zinc-binding proteins of canine seminal plasma
Autorzy:: Mogielnicka-Brzozowska, M.
Fraser, L.
Czarzasta, J.
Kordan, W.
Powiązania:: https://bibliotekanauki.pl/articles/32311.pdf
Data publikacji:: 2012
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: isolation
zinc-binding protein
seminal plasma
dog
electrophoresis
reproductive process
Opis:: Zinc-binding proteins from seminal plasma (ZnBPs) originate in the secretions of different accessory sex glands and are implicated in key events associated with sperm-egg fertilization processes. This study describes the isolation and characterization of the ZnBPs of canine seminal plasma. Ejaculates were collected from three crossbred dogs for a 2-week period. The ZnBPs as well as non zinc-binding proteins (nZnBPs) were isolated by zinc-dependent affinity chromatography. The isolated fractions were subjected to native gel electrophoresis (one-dimensional polyacryamide gel electrophoresis, PAGE) and sodium dodecyl sulphate polyacryamide gel electrophoresis (SDS-PAGE), using denaturing and reducing conditions. Zinc-elution profile using affinity chromatography displayed two protein fractions represented by the nZnBPs and ZnBPs, respectively. Using native gel electrophoresis, it was found that both the nZnBPs and ZnBPs occurred in their native state as aggregates, ranging from 140 to 669 kDa. The nZnBPs were disaggregated into 8 protein bands, with molecular weights ranging from 10.7 to 79.7 kDa, following SDS-PAGE analysis. By contrast, SDS-PAGE analysis of the ZnBPs revealed 13 protein bands, with molecular weights ranging from 11.6 to 152.3 kDa. Densitometric analysis showed that 46-48% of nZnBPs could be accounted by protein fractions with molecular weights of 10.7 and 14.2 kDa. Also, 2 protein fractions with molecular weights of 11.6 and 14.3 kDa, were predominant in ZnBPs, accounting for approximately 28-30% of the total proteins. These results demonstrate the zinc-binding capacity of proteins secreted by the canine prostate. The findings of this study indicate that ZnBPs of canine seminal plasma comprise several protein fractions, which might be implicated in the reproductive processes in the dog.
Źródło:: Polish Journal of Veterinary Sciences; 2012, 15, 3
1505-1773
Pojawia się w:: Polish Journal of Veterinary Sciences
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Why are dairy cows not able to cope with the subacute ruminal acidosis?
Autorzy:: Brzozowska, A M
Sloniewski, K
Oprzadek, J
Sobiech, P.
Kowalski, Z M
Powiązania:: https://bibliotekanauki.pl/articles/31813.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:: One of the largest challenges for the dairy industry is to provide cows with a diet which is highly energetic but does not negatively affect their rumens’ functions. In highly productive dairy cows, feeding diets rich in readily fermentable carbohydrates provides energy precursors needed for maximum milk production, but simultaneously decreases ruminal pH, leading to a widespread prevalence of subacute ruminal acidosis. Maximizing milk production without triggering rumen acidosis still challenges dairy farmers, who try to prevent prolonged bouts of low ruminal pH mainly by proper nutrition and management practices. The animals try to avoid overeating fermentable feeds, as it causes negative consequences by disturbing digestive processes. The results of several experiments show that ruminants, including sheep and beef cattle, are able to modify some aspects of feeding behaviour in order to adjust nutrient intake to their needs and simultaneously prevent physiological disturbances. Particularly, such changes (e.g., increased preference for fibrous feeds, reduced intake of concentrates) were observed in animals, which were trying to prevent the excessive drop of rumen fluid pH. Thanks to a specific mechanism called “the postingestive feedback”, animals should be able to work out such a balance in intake, so they do not suffer either from hunger or from negative effects of over-ingesting the fermentable carbohydrates. This way, an acidosis should not be a frequent problem in ruminants. However, prolonged periods of excessively decreased rumen pH are still a concern in dairy cows. It raises a question, why the regulation of feed intake by postingestive feedback does not help to maintain stable rumen environment in dairy cows?
Źródło:: Polish Journal of Veterinary Sciences; 2013, 16, 4
1505-1773
Pojawia się w:: Polish Journal of Veterinary Sciences
Dostawca treści:: Biblioteka Nauki

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