in order to investigate of the effects of water stress on seed yield and gas exchange and to evaluate the relationship between source and sink in sunflower azargol variety, a split-plot factorial field experiment was conducted in 2008. in this experiment, water stress (no irrigation from 30 days after sowing till ripening) and irrigation (irrigation at -3 bar soil water potential) were consider...

understanding the physiological processes associated with drought stress lead to an understanding of the basic mechanisms of resistance, maintaining yield potential and contribute to the identification of drought tolerant cultivars. for this purpose, the effects of drought stress in cowpea genotypes was evaluated using five different genotypes with different yield potential in a pot experiment ...

The present study describes antioxidant effect of Coriandrum sativum against lead nitrate induced toxicity in mice. Oxidative stress was induced in mice by a daily dose of lead nitrate (40 mg/kg body weight by oral gavage) for seven days. From day eight, after lead nitrate treatment, experimental animals received an oral dose of coriander extracts (aqueous extract 300 mg/kg body weight and 600 ...

Stress occurs when homeostasis is threatened or perceived to be so. The stress system with its central and peripheral effectors regulate the brain’s cognitive, reward and fear systems, wake-sleep centers as well as the growth, reproductive and thyroid hormone axes, and influence the gastrointestinal, cardiorespiratory, metabolic and immune systems. Malfunction of the stress system might impair ...

the relationship between qt dispersion and myocardial ischemia is still controversial. therefore, we aimed to investigate the relationship between qtd and the severity and extent of myocardial ischemia. in this cross-sectional study, 141 patients having symptoms of cad who referred to our medical center during 2009-2010, and were examined with myocardial isotope scan and ecg, were enrolled. bas...

background and aims. the aim of this study was to determine the stress patterns within an implant and the effect of different types of connections on load transfer. materials and methods. three different types of implant-abutment connections were selected for this study. sample a: 1.5-mm deep internal hex corresponding to a lead-in bevel; sample b: a tri-channel internal connection; and sample ...

introduction: job stress can result from an imbalance between job demands and the abilities to cope them. stress can affect individuals and lead to job dissatisfaction. this study was conducted to assess the influence of different job stress dimensions on job satisfaction in workers of a refinery control room located at the south of iran. materials & methods: in this cross sectional study all 1...

Keywords---Iron, Copper, Cadmium, Chromium, Mercury, Nickel, Vanadium, Lead, Zinc, Free radicals, Oxidative stress, Redox cycling, Glutathione depletion, Lipid peroxidation, DNA damage, Stress proteins