Surface fault ruptures damage structures which are located at the intersecting zones of active faults. It is essential to consider the undesirable effects of surface fault ruptures when designing structures. Geotechnical measures such as reinforced soil foundations effectively mitigate the hazards related to surface faults. The present work conducted a series of tests on foundations reinforced with geosynthetics, including geogrids, geocells and geogrid-geocell layers. These tests simulated the behavior of 1.5 m-wide strip footings located in 6-m thick alluvium that had been displaced 60 cm. A total of 12 disparate tests in terms of the number and type of reinforcement were conducted at a scale factor of 10. Image analysis of the results indicated desirable behavior for reinforced soil foundations in terms of reduced angular distortion, uniform settlement and deviation of the fault path. For normal fault rupture, the angular distortion of foundations reinforced by one geogrid layer, one geocell layer, one geogrid-geocell layer or two or three geo-grid layers decreased by 60%, 30%, 70%, 80% and 80%, respectively. These results also revealed that an increase in the number of geogrid layers to more than two layers caused an insignificant decrease in angular distortion. The decrease in angular distortions observed for soil foundations reinforced by one geogrid layer, one geocell layer and one geogrid-geocell layer were 7%, 16% and 40%, respectively, for reverse faulting. The performance of a reinforced soil foundation subjected to normal faulting was more acceptable than that for reverse faulting.
Objectives: This study aimed to evaluate the effect of anthocyanin on oxidative stress, sperm, and testis structure in diabetic rats induced by streptozotocin (STZ). Materials and Methods: In this experimental research, diabetes was induced by a single intraperitoneal injection of STZ (50 mg/ kg). A total of 64 rats were assigned into four groups as follows: a control group, a diabetic control group, a diabetic group daily administrated with anthocyanin at a dose of 100 mg/kg, and a healthy group daily administrated with anthocyanin for 56 days. After intervention, all the rats were anesthetized, their blood samples were taken, and the serum levels of insulin, glucose, and oxidative stress markers were measured. Finally, the testicles were removed and histological parameters were assessed. Results: Treating diabetic rats with anthocyanin significantly improved the testis tissue damage, glucose, and insulin plasma levels (P=0.001). Furthermore, the level of malondialdehyde (MDA) was up-surged and the serum levels of superoxide dismutase (SOD) and catalase (CAT) were reduced (P=0.001). Also, anthocyanin administration (100 mg/kg BW) significantly rectified these parameters (P<0.05). Conclusions: Our results confirmed the antioxidant role of anthocyanin in improving the sperm parameters and testicular oxidative damage caused by diabetes.
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