background and aims: the aluminum-containing compounds are used as glaze in tile and ceramic production plants. it means that the workers working in these plants are in direct exposure to aluminum-containing compounds. the aim of this study was to assess the potential damages caused by aluminum among tile plant workers. methods: in this cross-sectional study, 60 workers whom were in direct expo...

We describe how to obtain electronic transport properties of disordered graphene, including the tight binding model and nearest neighbor hopping. We present a new method for computing, electronic transport wave function and Greens function of the disordered Graphene. In this method, based on the small rectangular approximation, break up the potential barriers in to small parts. Then using the f...

ABSTRACT Background: Monitoring internal exposure of individuals handling significant amounts of iodine-125 (I-125) for iodination is of great importance. These individuals are potentially exposed to external contamination, and internal contamination through inhalation, ingestion and intact skin absorption, to I-125. Considering radiological toxicity of this radionuclide its monitoring in the w...

A novel cellular cytotoxicity assay using two fluorescent dyes was developed as an alternative method to the standard direct count of viable protozoa under light microscopy. The compound calcein AM is a non-fluorescent substance that diffuses passively across intact cell membranes and is converted by intracellular esterases to the green fluorescent calcein, which is retained in viable cells. Th...

introduction: heavy ions are nucleus of elements of iron, argon, carbon and neon that all carry positive electrical charges. for these particles to be useful in radiotherapy they need to accelerated to high energy by more than thousand mega volts. also the cosmic environment is considered to be a complicated mixture of highly energetic photons and heavy ions such as iron. therefore, the health ...

BACKGROUND Mendelian randomization uses genetic variants, assumed to be instrumental variables for a particular exposure, to estimate the causal effect of that exposure on an outcome. If the instrumental variable criteria are satisfied, the resulting estimator is consistent even in the presence of unmeasured confounding and reverse causation. METHODS We extend the Mendelian randomization para...

Biomonitoring of exposure is a useful tool for assessing environmental exposures. The matrices available for analyses include blood, urine, breast milk, adipose tissue, and saliva, among others. The sampling can be staged to represent the particular time period of concern: preconceptionally from both parents, from a pregnant woman during each of the three trimesters, during and immediately afte...

the aim of this study was the evaluation of acute genotoxic effect of effluent water of thermo-power plant by means of tradescantia root tips micronucleus test (mn), mitotic index and cell aberrations.   tradescantia , was experimentally treated (for 24 h), with effluent water of thermo-power plant in different dilution ratios (negative control – distilled water; primary untreated effluent wate...

to determine the effects of vinasse on physicochemical properties of a calcareous and an acidic soil experiment was factorial and had a complete randomized design and three replications. factorial combinations of five vinasse levels (0, 5, 10, 20 and 40 t/ha) and three exposure times (10, 20 and 30 days) were considered as the treatments of this experiment. the result of experiment showed that ...