نتایج جستجو برای: time of reaction
تعداد نتایج: 21288303 فیلتر نتایج به سال:
Introduction: Few studies were conducted to determine the effects of lighting on cognitive performance. However, they could not reach a decisive conclusion. This study investigated cognitive performance of university students exposed to different levels of lighting under laboratory conditions. Methods: In this experimental study, 33 subjects (age range 19-26 years) performed cognitive tests....
مقدمه: آفلاتوکسین ها ترکیباتی سرطان زا هستند که توسط قارچ های aspergillus flvaus و a. parasiticus تولید می شوند. در میان آفلاتوکسین های شناخته شده سرطان زایی آفلاتوکسین b1 بیشتر از سایر آفلاتوکسین ها می باشد. این سم می تواند با آلوده کردن مواد غذایی وارد بدن انسان و درنهایت بافت پستان شود. دو ژن مؤثر در سرکوب تومور در پستان، ژن های brca1 و brca2 می باشند که بیان این ژن ها می تواند توسط آفلاتوکس...
conclusions simpleprobe® real-time pcr is a fast and accurate technique qualified to detect vkorc1 and cyp2c9 snps. these results encourage taking further steps towards using vkorc1 and cyp2c9 allelic screening to prevent clinical complications due to resistance or sensitivity to warfarin as well as anti-coagulant dose adjustment. results the allelic frequencies for vkorc1 c1173t (cc, ct, tt) w...
conclusions the quite sensitive in-house taqman real time rt-pcr assay was able to detect and quantify all four main hcv genotypes prevailing around all geographical regions of iran. results the lower limit detection of this in-house hcv real-time rt-pcr was determined as 100 rna copies/ml. inter- and intra-assay coefficient of variation (cv) of this in-house hcv real-time rt-pcr ranged from 0....
background legionellaceae contains legionella genus with over 52 species and 64 serogroups. it is one of the most important causes of respiratory disease in human. more than 30% of hospital-acquired pneumonia is caused by legionella. ventilator-associated pneumonia (vap) is an infection acquired in hospital wards, particularly in intensive care unit (icu). this disease approximately affects 9% ...
Background and aims:Traffic noise is one of the most important environmental pollutants. World health organization has determined the health effects of community noise including cognitive performance disorders. The aim of this research is the study of effects of road traffic noise on peripheral perception and choice reaction time performance drivers.methods: thirty and five students from the fa...
Background and aims: In accomplishing attention-consuming tasks, mental fatigue reduces productivity and increases error rate as the factors involved in work accidents. The present research goal was to study the effects of sleep quality and mental fatigue on attention and reaction time in the thermal comfort condition. Methods: This experimental research was conducted on 33 university students...
Introduction: In many workplaces there is exposure to heat and light simultaneously. This study investigated the combined effect of heat and lighting on some cognitive performance, i.e. reaction time. Methodology: the present semi-experimental study was conducted 2015 on 33 healthy students (16 girls and 17 boys) with a mean age of 22.1 in the thermal stress chamber. The reaction time parame...
the ataxia telangiectasia mutated gene (atm), candidate for breast cancer susceptibility gene, encode a 350-kda protein belongs to the core components of dna-damage response machinery. female at carriers have at least 5-fold increase risk for breast cancer. reduction in atm expression is shown in multiple studies in breast tissues. we aimed to perform a research to measure the atm mrna expressi...
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