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Wyświetlanie 1-2 z 2
Tytuł:
Gamma Attenuation Properties of Some Aluminum Alloys
Autorzy:
Yıldırım, S.
Tugrul, A.
Buyuk, B.
Demir, E.
Powiązania:
https://bibliotekanauki.pl/articles/1188038.pdf
Data publikacji:
2016-04
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
25.20.Dc
Opis:
In the present work, several commonly used aluminum alloys were investigated for their protective properties against gamma radiation. The gamma transmission technique was used to study the gamma attenuation behavior of the alloys. Cs-137 (0.662 MeV) and Co-60 (1.25 MeV) gamma radioisotope sources, which have relatively medium and high gamma energy levels, were used as gamma sources. The linear and mass attenuation coefficients of the aluminum alloys were measured. The mass attenuation coefficients of the samples were compared with the theoretical values which were calculated using XCOM computer code. The difference between the experimental and theoretical values was below 5%. In addition half-value layer (HVL) values for the studied aluminum alloys were calculated using the linear attenuation coefficients. The attenuation coefficients of the different aluminum alloys were compared. The biggest HVL was observed for 1050 alloy, for both gamma isotope sources, which means the smallest gamma attenuation capability among the studied alloys. It is concluded that the alloys were applicable for the gamma radiation shielding applications.
Źródło:
Acta Physica Polonica A; 2016, 129, 4; 813-815
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of emodin and metformin on biochemical, histological and oxidative stress parameters in streptozotocin-induced diabetic rats
Autorzy:
Bati, B.
Yıldırım, S.
Celik, I.
Kaptaner, B.
Huyut, Z.
Yenilmez, A.
Bolat, I.
Zirek, A.K.
Demir, A.
Powiązania:
https://bibliotekanauki.pl/articles/53893191.pdf
Data publikacji:
2023
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Opis:
Diabetes mellitus (DM) is a lifelong metabolic disease with a high mortality rate, which reduces the quality of life of many people worldwide. Metformin is a hypoglycemic drug usually used to treat type 2 diabetes. Emodin has various protective effects and is widely used in holistic medicine. The aim of this study was to investigate the effects of emodin, metformin and the emodin + metformin combination in liver and kidney tissues of rats with diabetes induced by streptozotocin (STZ). For this purpose, 5 groups: I – Group Control (CG), II – Group STZ control (SC), III – Group STZ + metformin 250 mg kg-1 (SM), IV – Group STZ + emodin 40 mg kg-1 (SE) and V – Group STZ + metformin 250 mg kg-1 + emodin 40 mg kg-1 (SME) were formed with 7 rats in each group. Liver, kidney and blood samples were taken at the end of the experiment. In the study, superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), glutathione-S-transferase (GST), glutathione reductase (GR), reduced glutathione (GSH) and malondialdehyde (MDA) levels in liver and kidney tissues were analyzed. In addition, histopathology and immunohistochemical and serum toxicity biomarkers (AST, ALT, BUN and CREA) were analyzed. According to the experimental results, there was an increase in serum biomarker values in the SC group compared to the control group (p values for AST, ALT, CREA and BUN were p=0.005, p=0.001, p=0.006, p=0.001, respectively). Some antioxidant parameter values increased in SM, SE and SME groups compared to CG and SC groups (p=0.001 for GR in liver tissue and p=0.032 for GPX in kidney tissue). Histopathologic and immunohistochemical observations also supported biochemical parameter findings. In conclusion, oxidative stress parameters in liver and kidney tissue, serum samples, histopathologic and immunologic findings suggest that metformin, emodin and the metformin + emodin combination have positive effects on nephrotoxic and hepatotoxic side effects.
Źródło:
Journal of Elementology; 2023, 28, 2; 319-335
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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