Abstract: In this study, effects of oxytetracycline on glutathione s-transferase enzyme activity and gene expression levels in rainbow trout (Oncorhynchus mykiss) liver were investigated. For this purpose, liver tissues from rainbow trout exposed to oxytetracycline application were collected at third, sixth and 12th hours. The group not exposed to oxytetracycline was assigned as control. While the lowest enzyme activity of GST was at 12th, the highest enzyme activity was observed in control. While compared with the control group, enzyme activity at 12th hour was highly significant (p 0.001), the third and sixth hours groups were significant (p 0.05). The lowest gene expression level was found in 12th group and the highest level was the third. While compared with the control group, difference at the third hour of gene expression level was highly significant (p 0.001), at the sixth and 12th hours groups was not significant. As a result, there was understand that no correlation between gene express

• Publication Date: 26-Sep-2016
• DOI: 10.15224/978-1-63248-106-1-32
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Abstract: In this paper we examine the thermal-convective stability of a fluid-saturated porous medium filled within a vertical cylindrical container heated from below. The upper and lower surfaces of the cylinder are impermeable and are kept at constant but different temperatures. The lateral sidewall is impermeable and subject to mixed heating which is characterized by the Biot number. The threshold of Rayleigh number, above which the small disturbance becomes unstable, is sought from the characteristic equation. Our results show that the preferred mode at onset is always axisymmetric for all aspect ratios when Biot number approaches infinitely, and it becomes non-monotonic variation with respect to aspect ratio when Biot number is finite.

• Publication Date: 26-Sep-2016
• DOI: 10.15224/978-1-63248-106-1-33
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