نتایج جستجو برای: t stress
تعداد نتایج: 1124475 فیلتر نتایج به سال:
How borderline impairment of thyroid function can affect thermoregulation is an important issue because of the antithyroidal properties of a many environmental toxicants. This study compared the efficacy of heat and cold stress to identify thermoregulatory deficits in rats subjected to borderline and overt hypothyroidism via subchronic exposure to propylthiouracil (PTU). After 3 wk of exposure ...
وجود ترک ذاتی در قطعات مکانیکی می تواند سبب تسریع خرابی مکانیکی و شکست آن ها حتی در تنش های کمتر از استحکام تسلیم که خرابی مورد انتظار نیست، شود. ترک ها و ناچ ها ممکن است در زوایای مختلفی نسبت به راستای بارگذاری در ماده وجود داشته باشند. این امر سبب می شود تا رشد ترک و شکست نهایی ماده تحت مود ترکیبی شکست صورت گیرد. بنابراین بررسی عوامل موثر بر مقاومت ماده در برابر شکست، تحت بارگذاری مود ترکیبی ...
three medium magnitude events happened inside the transitional border of south alborz and central iran; namely kahak-qom 2007/06/18 event with ml 5.6, zanjan 2008/05/27 event with ml 5.3 and aradan-garmsar 2007/11/19 event with ml 5.1. this provides us the opportunity to compute focal mechanism and stress drop of the events and compare them with those events happened within the alborz range.
AIMS Invaginations of the cellular membrane called t-tubules are essential for maintaining efficient excitation-contraction coupling in ventricular cardiomyocytes. Disruption of t-tubule structure during heart failure has been linked to dyssynchronous, slowed Ca(2+) release and reduced power of the heartbeat. The underlying mechanism is, however, unknown. We presently investigated whether eleva...
T-2 toxin is known to induce apoptosis in mammalian cells. The mechanism of apoptosis induced by T-2 toxin has been proposed to be linked with oxidative stress and mitochondrial pathway. In the current study, the toxic effect of T-2 on Hela, Bel-7402, and Chang liver cells was examined in dose-dependent and time-dependent manner by MTT assay. Caspase-3 was found to be up-regulated under T-2 tox...
BACKGROUND This study aimed to investigate the degree of occupational stress and the clinical mental state of dentists. In addition, we investigated the correlation of occupational stress with depression, anxiety, and sleep among dentists in Korea. METHODS A cross-sectional survey on 231 dentists was conducted using the Doctor Job Stress Scale, Center for Epidemiologic Studies Depression Scal...
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