نتایج جستجو برای: cumulative exposure model
تعداد نتایج: 2426432 فیلتر نتایج به سال:
high intensity optical radiation can cause damage to the eye and intense radiation in the range of 770-1400 nm can cause thermal retinal damage. in the workplaces where there are high temperature sources, the workers in front of these hot sources without bright light maybe exposed to the intense ir radiation, thus regular measurement of these radiations seems crucial. measurement of ir radiat...
C hildren with congenital and acquired heart disease typically undergo imaging procedures that may expose them to large amounts of ionizing radiation. Radiation exposure in childhood is of particular concern because children have immature developing organ and tissue structures. These factors , as well as the potentially longer lifespan of these children , may significantly increase lifetime can...
Most studies on asbestos-related diseases are based on chest radiographs, and dose-response relationships are still controversial. The aim of this study was to describe the most relevant parameters of asbestos exposure linked to pleural plaques and asbestosis diagnosed by high-resolution computed tomography (HRCT). A large screening programme including systematic HRCT examinations was organised...
For estimating reliable exposure-response relations it is necessary that random variation in both the response and the exposure variables be sufficiently small. Variability in cumulative exposures can arise from uncertainties in self-reported work histories from interviews. In most epidemiologic surveys, the information gathered from questionnaires is used without knowing the validity or reprod...
Chronic low-dose exposure to solvents has been associated in epidemiologic studies with chronic neurotoxicity, but the evidence is not consistent. Styrene causes acute disturbances in the central and peripheral nervous systems. To determine if exposure to styrene may contribute to chronic diseases of the central nervous system, the authors examined mortality from nervous system diseases, mental...
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