نتایج جستجو برای: daily exposure
تعداد نتایج: 493200 فیلتر نتایج به سال:
The effects of constant (12, 18, and 24 C) and cyclical (daily variation of 15–21 and 12–24 C) thermal regimes on the growth and feeding of Lahontan cutthroat trout (Oncorhynchus clarki henshawi) of variable sizes were examined. Higher constant temperatures (i.e., 24 C) and more variable daily temperatures (i.e., 12–24 C daily cycle) negatively affected growth rates. As fish mass increased (fro...
In this study, we estimated the transportation-related emissions of nitrogen oxides (NOx) at an individual level for a sample of the Montreal population. Using linear regression, we quantified the associations between NOx emissions and selected individual attributes. We then investigated the relationship between individual emissions of NOx and exposure to nitrogen dioxide (NO2) concentrations d...
Nowadays, using rail vehicles like metro is necessary for transportation in megacities and metropolises. In this descriptive-analytical study, whole body vibration was evaluated by two methods including basic evaluation and the recommended dose of vibration proposed based on ISO 2631-1 standard. In the present study measurements were performed over 13000 seconds in usual daily working hours by ...
Abstract Background: Occupational exposure to styrene can lead to various psychological and somatic complaints including color vision disorder that can occur even in low concentrations. Color vision disease is an early clue for effect of styrene on human, which can be used as an appropriate screening method in workers exposed to styrene. Materials and Methods: Working in waxy foundry is a job...
BACKGROUND Nevirapine is metabolized by CYP2B6 and polymorphisms within the CYP2B6 gene partly explain inter-patient variability in pharmacokinetics. The aim of this study was to model the complex relationship between nevirapine exposure, weight and genetics (based on combined analysis of CYP2B6 516G > T and 983T > C single nucleotide polymorphisms). METHODS Non-linear mixed-effects modelling...
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Background : Farmers and welders who work in open spaces and are exposed to direct sunlight are often exposed to sunlight radiation o n the neck and head . Thus, they may be afflicted with various types of skin cancer . The aim of the present study was to investigate the amount of UV exposure in welders working in Shahrud City , Iran . Materials and Method s : This cross-sectio...
Personal radio frequency electromagnetic field (RF-EMF) exposure, or exposimetry, is gaining importance in the bioelectromagnetics community but only limited data on personal exposure is available in indoor areas, namely schools, crèches, homes, and offices. Most studies are focused on adult exposure, whereas indoor microenvironments, where children are exposed, are usually not considered. A me...
Dolutegravir is neither an inducer nor inhibitor of metabolising enzymes, and it therefore has a low propensity to act as perpetrator drug-drug interactions. Clinically significant decreases in dolutegravir exposure occur when co-administered with strong inducers (e.g. rifampicin, efavirenz) drug enzymes efflux transporters for which substrate – this can be overcome by increasing the dose from ...
background: many studies have been published on the antioxidative effects of boric acid (ba) and sodium borates in in vitro studies. however, the boron (b) concentrations tested in these in vitro studies have not been selected by taking into account the realistic blood b concentrations in humans due to the lack of comprehensive epidemiological studies. the recently published epidemiological stu...
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