نتایج جستجو برای: short term exposure
تعداد نتایج: 1161469 فیلتر نتایج به سال:
Phytoplankton are potentially more at risk to the adverse effects of herbicides than many other organisms in estuarine ecosystems. The focus of this study was to characterize the toxicity of a widely used herbicide, atrazine, to a single species of phytoplankton. The nanoplankter Pavlova sp. was grown under controlled laboratory conditions and was used to elucidate short-term, high-level popula...
Nitrogen dioxide (NO2), the oxidation product of nitric oxide (NO), is a reactive free radical forming gas, the inhalation of which has been reported to induce severe damage to distal airways. In order to quantify dose and time course of parenchymal and vascular damage, rats were exposed to 5, 10 and 20 ppm NO2 for 3 and 25 days, followed by quantitative histology and morphometry of the lung. H...
Stress and high-calorie diet increase the risk of developing metabolic syndrome. Glycyrrhizic acid (GA) has been shown to improve hyperglycaemia and dyslipidaemia under various physiological conditions. This study was aimed at examining the effects of stress and GA on glucose metabolism under short- or long-term stress. Forty-eight Sprague Dawley rats were divided into two groups with constant ...
Introduction: Education in medicine can face several problems such as facing unknown clinical environment. Medical education has paid attention to early clinical exposure. Early clinical exposure can increase students’ motivation and decrease professional tension. The present study is conducted under the goal of determining one- month course of early clinical exposure to clinical environm...
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