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Wyświetlanie 1-15 z 36
Tytuł:
Liquid Crystalline Polyurethanes Studied by Positron Annihilation Method
Autorzy:
Baranowski, A.
Dębowska, M.
Jankowski, A.
Jerie, K.
Penczek, P.
Rudzińska-Girulska, J.
Szczepaniak, B.
Wolińska-Grabczyk, A.
Powiązania:
https://bibliotekanauki.pl/articles/1933462.pdf
Data publikacji:
1995-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
71.60.+z
81.20.Sh
78.70.Bj
82.30.Hk
Opis:
A series of liquid crystalline polyurethanes of different both flexible spacer length and mesogenic group content was studied by means of positron annihilation method. The investigated polymers were targeted on the separation of aromatic hydrocarbons from their mixtures with aliphatic ones. The effect of modification of the liquid crystalline polyurethane chain on the polyurethane free volume size and free volume distribution was determined on the basis of the positron annihilation lifetime spectra. In the positron annihilation lifetime spectra measured for the samples under study two long components of several nanoseconds, characteristic of o-Ps decaying by pick-off, occurred. The correlation of the values of the o-Ps lifetime with the size of the free volume region allowed to recover the free volume distributions with the use of the method employing the numerical Laplace inversion technique. The obtained results were compared with the diffusion data on the mobility of liquid hydrocarbons in the liquid crystalline polyurethanes enabling the correlations between polymer structure and its transport properties to be evaluated.
Źródło:
Acta Physica Polonica A; 1995, 88, 1; 21-27
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of pesticide [glyphosate] on dehydrogenase activity, pH, Eh and gases production in soil [laboratory conditions]
Autorzy:
Bennicelli, R.P.
Szafranek-Nakonieczna, A.
Wolinska, A.
Stepniewska, Z.
Bogudzinska, M.
Powiązania:
https://bibliotekanauki.pl/articles/25248.pdf
Data publikacji:
2009
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Źródło:
International Agrophysics; 2009, 23, 2; 117-122
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
MicroRNA expression in liver of whitefish (Coregonus lavaretus) exposed to microcystin-LR
Autorzy:
Brzuzan, P.
Woźny, M.
Wolińska, L.
Piasecka, A.
Łuczyński, M. K.
Powiązania:
https://bibliotekanauki.pl/articles/363280.pdf
Data publikacji:
2010
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie
Tematy:
Coregonus lavaretus
Dicer
histon H2A
mikrocystyna LR
miRNAs
toksyczność
histone H2A
microcystin LR
toxicity
Opis:
MicroRNAs (miRNAs) are small, highly conserved, non-coding RNAs that regulate gene expression of target mRNAs through cleavage or translational inhibition. In the field of toxicology, the relationship between toxicity and microRNA expression is poorly understood. In the present study we analyzed the abundance of 9 selected miRNAs (omy-miR-21, omy-miR-21t, omy-miR-122, omy-miR-125a, omy-miR-125b, omy-miR-125t, omy-miR-199-5a, omy-miR-295, omy-let-7a) and mRNA of 3 genes (histone H2A, ribosome protein rpl19, and Dicer which is a miRNA processing enzyme) in liver samples of whitefish exposed to Microcystin-LR (MC-LR) at a dose of 100µg*kg-1body weight for 24 or 48h. In the examined liver tissue, omymiR-122 showed the highest relative constitutive level, what is consistent with data obtained from fish and mammals. Unexpectedly, the reference H2A mRNA level was consistently up-regulated (over 20-fold; P<0.05) in fish liver after both 24 and 48h of exposure to MC-LR. The result may suggest that MC-LR acts as an initiator of specific cell-physiologic signals triggering DNA replication in fish liver cells. MC-LR treatment had no effect on the examined miRNAs levels, except for omy-miR-125a and omy-let-7a. Whereas omy-miR-125a was up-regulated (ER=2.68; S.E. 1.61-6.78; P<0.05), omy-let-7a was down-regulated (ER=0.55; S.E. 0.32-0.79; P<0.05) in whitefish liver after 48h of the treatment with MC-LR, when compared to controls. More work with the fish is essential for understanding the crosstalk of the regulatory network controlled by the two miRNAs in the context of MC-LR toxicity.
Źródło:
Environmental Biotechnology; 2010, 6, 2; 53-60
1734-4964
Pojawia się w:
Environmental Biotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
MicroRNA expression profiles in liver and colon of sexually immature gilts after exposure to Fusarium mycotoxins
Autorzy:
Brzuzan, P.
Wozny, M.
Wolinska-Niziol, L.
Piasecka, A.
Florczyk, M.
Jakimiuk, E.
Gora, M.
Luczynski, M.K.
Gajecki, M.
Powiązania:
https://bibliotekanauki.pl/articles/2087983.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
To improve our knowledge of the role of microRNAs (miRs) in responses of the porcine digestive system to two Fusarium mycotoxins, zearalenone (ZEN) and deoxynivalenol (DON), we examined the expression of 7 miRs (miR-9, miR-15a, miR-21, miR-34a, miR-122, miR-125b, and miR-192), previously found to be deregulated in diseased liver and colon cells. In this study, immature gilts were exposed to NOEL doses of ZEN (40 |ig/kg/d), DON (12 |ig/kg/d), ZEN+DON (40 + 12 |ig/kg/d), and placebo (negative control group) for 7,14, 21, 28, 35, and 42 days. Before the treatment, expression levels of the selected miRs were measured in the liver, the duodenum, the jejunum, and the ascending and the descending colon of the gilts. Hierarchical clustering of the tissues by their miR expression profiles was consistent with what would be expected based on the anatomical locations and the physiological functions of the organs, suggesting that functions of the miRs are related to the specificities of the tissues in which they are expressed. A subset of 2 pairs of miRs (miR-21+miR-192 and miR-15a+miR-34a), which were assigned to two distinct clusters based on their tissue abundance, was then evaluated in the liver and the ascending and the descending colon during the treatment. The most meaningful results were obtained from the ascending colon, where a significant effect of the treatment was observed, suggesting that during the exposure to mycotoxins, the pathways involved in cell proliferation and survival were disordered. Changes in miR expression in the liver and the descending colon of the treated gilts were smaller, and were associated more with treatment duration than the exposure to ZEN, DON, or ZEN+DON. Further research should focus on identification of genes whose expression is regulated by these aberrantly expressed miRs. This should facilitate understanding of the miRNA-regulated biological effects of mycotoxins.
Źródło:
Polish Journal of Veterinary Sciences; 2015, 18, 1
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
"Konstantynopol – Nowy Rzym. Miasto i ludzie w okresie wczesnobizantyńskim" ["Constantinople – New Rome. The City and the People in the Early Byzantine Period"], ed. M. J. Leszka, T. Wolińska, WN PWN, Warszawa 2011, pp. 751
Autorzy:
Cecota, Błażej
Powiązania:
https://bibliotekanauki.pl/articles/682388.pdf
Data publikacji:
2011
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Źródło:
Studia Ceranea; 2011, 1; 230-232
2084-140X
2449-8378
Pojawia się w:
Studia Ceranea
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Kult obrazu Matki Bożej Latyczowskiej – historia i teraźniejszość.
The cult of the image of Our Lady of Latyczów– history and the present time
Autorzy:
Hamryszczak, Artur
Powiązania:
https://bibliotekanauki.pl/articles/784023.pdf
Data publikacji:
2019
Wydawca:
Katolicki Uniwersytet Lubelski Jana Pawła II
Tematy:
Łuck
Latyczów
Kresy wschodnie
Matka Boża Latyczowska
II wojna światowa
Eastern Borderlands
Our Lady of Latyczów
world war II
Dębowska M., Obraz Matki Bożej Latyczowskiej w diecezji łuckiej (1930-1945), „Archiwa, Biblioteki i Muzea Kościelne”, 105 (2016) s. 25-43. Dębowska M., Matka Boża Latyczowska na Wołyniu, Biały Dunajec-Ostróg 2017. Pod Twoją obronę …Sanktuaria Maryjne na Podolu, red. Halina Irena Szumił Sandomierz 2018. Szumił H., Sanktuarium Matki Bożej Latyczowskiej, Sandomierz 1994. Szumił H., Pani Podola, Wołynia i Lublina, Lublin 2014. Szumił H., „Nigdym ja ciebie, ludu, nie rzuciła”: z dziejów latyczowskiej Ikony, Lublin-Sandomierz 2015. Szumił H., Do Ciebie wołamy, Orędowniczko nasza: modlitwy i pieśni do Matki Bożej Latyczowskiej, Sandomierz 2016. Wierna R., Obraz Matki Bożej Latyczowskiej. Analiza i interpretacja, „Archiwa, Biblioteki i Muzea Kościelne”, 110 (2018) s. 443-456. Wolińska-Wójtowicz A., Matka Boża Latyczowska, Lublin 2014.
Opis:
-
Źródło:
Archiwa, Biblioteki i Muzea Kościelne; 2019, 111; 441-446
0518-3766
2545-3491
Pojawia się w:
Archiwa, Biblioteki i Muzea Kościelne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Occurrence of alcohol addiction in the adult population living in rural areas
Autorzy:
Mroczek, B.
Mrozik, L.
Kotwas, A.
Brzezniak, H.
Wolińska, W.
Niewczas, M.
Zabielska, P.
Grzywacz, A.
Powiązania:
https://bibliotekanauki.pl/articles/2081939.pdf
Data publikacji:
2018
Wydawca:
Instytut Medycyny Wsi
Tematy:
MAST Test
AUDIT Test
alcohol drinking
HBI
social activity
Opis:
Introduction. Risky alcohol consumption is one of the main threats to the health of both individuals and society as a whole. These threats affect, among others, health, safety and financial situation. Their scale and intensity cause the issue of alcohol consumption to become a significant challenge for public health. Objective. The aim of the study was assessment of the occurrence of the problem of alcohol consumption among residents of rural areas in Western Pomerania and the Lubuskie Province of Western Poland. Materials and method. The study was conducted on 350 residents of rural areas – 236 females (66.4%) and 114 males (32.6%), median age – 42 y. (range – 20–76 years). The tools used included MAST and AUDIT questionnaires, Health Behaviour Inventory (HBI), Social Activity Questionnaire (SA), and original questions. Results. In the studied group the problem with proper alcohol consumption occurred. High convergence was observed between results obtained by individual respondents with both tools (r=0.868 with p<0.001). Median on the AUDIT scale indicated the possibility of alcoholism occurrence in the studied group, whereas the MAST test indicated the necessity to conduct an in-depth alcohol diagnosis. Factors that differentiated the points scored by respondents in AUDIT test included gender – more women drank alcohol in a risky way (Z=-2.54, p=0.011), education, health behaviours, professional passivity, and using various forms of support. In the AUDIT test, the alcoholism threat was over 7 times higher in people without permanent employment (vs. employed people), OR=7.41 (95% CI-4.56–12.04), and in MAST test it was over 4 times higher in these individuals: OR =4.45 (95% CI–2.64–7.49). Conclusions. Results indicate the need to intensify the work of regional facilities for solving alcohol problems, as well as educational campaigns in schools and health care facilities.
Źródło:
Annals of Agricultural and Environmental Medicine; 2018, 25, 4; 659-664
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 36

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