نتایج جستجو برای: exposure level
تعداد نتایج: 1349755 فیلتر نتایج به سال:
Background: Over the past few years, the rapid use of high frequency electromagnetic fields like mobile phones has raised global concerns about the negative health effects of its use. Adaptive response is the ability of a cell or tissue to better resist stress damage by prior exposure to a lesser amount of stress. This study aimed to assess whether radiofrequency radiation can induce adaptive r...
Background: Exposure to hand-arm vibration is one of the most common physical harmful factors. The purpose of this study was Experimental study of the level of manual performance disability caused by exposure to hand-arm vibration among automobile casting workers. Methods: This study was performed on 53 casting workers as case group and 28 controls as control group. The measurement of the vi...
The exposure index was used to obtain integrated and concise assessment of the various risk factor analyzed and to classify occupational scenarios featuring significant and diversified exposure to risk factors. In this study, an integrated procedure from four data gathering methods include observational methods (for jobs and tasks analyzing featuring repetitive movements) interview method (fo...
Introduction: Nowadays, exposure to extremely low frequency (ELF) magnetic field has been interested in many studies due to possible effects on human physical-mental health. Therefore, this study aimed to assess arc welders’ exposure to extremely low frequency magnetic field and to determine its relationship with the secretion of paratormone (PTH) hormone and mood states. Material and Method...
Two hundred and fifty day-old broiler chickens were housed in a high altitude farm and divided in two experimental groups (cold-exposed and control). At the age of 3 and 4 d, the cold-exposed chickens were exposed to 15?C for 3 h, while the control birds were reared under normal condition. During the period between 14 and 28 days, both groups of chickens were exposed to a low environmental temp...
normal 0 false false false en-us x-none ar-sa background: cigarette smoke contains many oxidants and may alter the human reproduction by inducing oxidative stress (os) in both active and passive smokers. this study was designed to evaluate the effect of environmental tobacco smoke (ets) exposure on oxidative stress in the follicular follicle and the assisted reproduction outcomes. materials and...
Background and aims: High light level of natural or artificial sources in some workplaces may be considered as a hazardous physical agent. The present study aimed to assess the effect of light level of 1000 lux on sperm parameters in mice. Methods: The subjects were assessed in two group including 1. Exposed (n= 6; exposed to light level of 1000 lux during 5 eight-hour days), 2. Unexposed ...
Introduction: Family violence is an aggressive behavior happening among some couples. According to WHO reports, familial violence against women is a health priority and has many complications. This study investigated the physical, mental and sexual violence exposure among the married women in reproductive age in Zahedan, Iran. Methods: This cross sectional study carried out on 354 married women...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید