Inverse probability-weighted marginal structural models with binary exposures are common in epidemiology. Constructing inverse probability weights for a continuous exposure can be complicated by the presence of outliers, and the need to identify a parametric form for the exposure and account for nonconstant exposure variance. We explored the performance of various methods to construct inverse p...

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With this letter we express our concerns about the applicability of the proposed Margin of Exposure analysis as a method of risk assessment for propylene glycol and glycerol exposure from a shisha-pen type electronic cigarette. The studies used to determine the Margin of Exposure were evaluating the effects in humans or animals of continuous exposure to these chemicals in every single breath, w...

this paper deals with continuous frames and continuous riesz bases. we introduce continuous riesz bases and give some equivalent conditions for a continuous frame to be a continuous riesz basis. it is certainly possible for a continuous frame to have only one dual. such a continuous frame is called a riesz-type frame [13]. we show that a continuous frame is riesz-type if and only if it is a con...

OBJECTIVE Mobile phones generate microwave radiation which is absorbed by exposed tissue and converted into heat. It may cause detrimental health effects. The aim of the experiment was to check if exposure to EMF emitted by mobile phone influenced the tympanic temperature. MATERIAL AND METHODS Human volunteer study was performed on ten healthy young men, aged 22.1±4.7 years, examined three ti...

insecticidal efficacy of three diatomaceous earth (de) formulations, debbm, dea and f2 was evaluated on three different wheat cultivars, chamran, verinak and behrang, against tribolium confusum jacqueline du val. des were applied at the rates of 100, 200 and 300 mg/kg. bioassays were carried out on wheat at 27 ± 1 °cand 55 ± 5% rh in continuous darkness. mortality of adults was counted after 2,...

A thorough assessment of human exposure to environmental agents should incorporate mobility patterns and temporal changes in human behaviors and concentrations of contaminants; yet the temporal dimension is often under-emphasized in exposure assessment endeavors, due in part to insufficient tools for visualizing and examining temporal datasets. Spatiotemporal visualization tools are valuable fo...

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