نتایج جستجو برای: direct exposure test
تعداد نتایج: 1473527 فیلتر نتایج به سال:
This study deals with noise problems associated with the use of air-turbine drills in dental practice. The sigh-speed dental drills offer an entirely new concept cavity preparation and presents by far the easiest method of cutting hard dental tissues. The use of these machines, however, cause some new problems among which is the possibility of harmful effects on the hearing sense of the...
We review pharmacokinetic and pharmacodynamic factors that should be considered in the design and interpretation of developmental neurotoxicity studies. Toxicologic effects on the developing nervous system depend on the delivered dose, exposure duration, and developmental stage at which exposure occurred. Several pharmacokinetic processes (absorption, distribution, metabolism, and excretion) go...
BACKGROUND Paying for health care may exclude poor people. Burkina Faso adopted the DOTS strategy implementing "free care" for Tuberculosis (TB) diagnosis and treatment. This should increase universal health coverage and help to overcome social and economic barriers to health access. METHODS Straddling 2007 and 2008, in-depth interviews were conducted over a year among smear-positive pulmonar...
We tried to obtain preliminary evidence to test the hypothesis that the association between driving exposure and the frequency of reporting a road crash can be decomposed into two paths: direct and indirect (mediated by risky driving patterns). In a cross-sectional study carried out between 2007 and 2010, a sample of 1114 car drivers who were students at the University of Granada completed a qu...
Background: The aim of this study was to assess exposure to extremely low frequency electromagnetic fields (ELF-EMFs) and its effects on secretion of thyroid hormones associated with symptoms of fatigue on electric arc welding workers. Methods: This study was carried out on two groups including 35 welders (as exposed) and 35 non-welders (as control). Extremely low frequency electromagnetic fie...
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