نتایج جستجو برای: industrial dust
تعداد نتایج: 187438 فیلتر نتایج به سال:
e In Great Britain there have been no reports of pulmonary fibrosis due to particulate aluminium. On the contrary, the Medical Research Council's Industrial Pulmonary Diseases Committee in 1936 investigated 50 workers exposed to aluminium dust and were unable to find any evidence that it caused fibrosis of the lung. Hunter, Milton, Perry, and Thompson (1944) studied the health and environment o...
With an increase in the population and industrialization, a lot of valuable natural resources are depleted to prepare and manufacture products. However industrialization on the other hand has waste disposal issues, causing dust and environmental pollution. In this work, Aluminium Metal Matrix Composite is prepared by reinforcing 10 wt% and 20 wt% of wet grinder stone dust particles an industria...
In order to obtain more data on the effect of inhalation plumbiferous dust by workers, a systematic examination was organized in a number of pigment factories in the Netherlands. Some experience had been gained from a former examination of an analogous nature held in factories where lead accumulators were manufactured.. Based on this examination, and after discussion in a committee on which sev...
Introduction: Inhalation exposure to dust is one of the most common adverse environmental factors that can have adverse effect on the health of employees. In this study, dust inhalation exposure of workers with different methods as well as GIS was investigated. Methods: An analytical cross-sectional study was performed on the sample size based on results of homogeneous exposure groups (SEG)....
Sandstorms in the desert and loess regions of north-northwestern China and Mongolia, as well as the associated dustfall episodes in the Korean Peninsula, were monitored between January and December 2005. Composite color images were made on the basis of data received directly from the National Oceanic and Atmospheric Administration satellite advanced very high resolution radiometer, and the dist...
The standard thermal precipitator has been modified for field surveys of airbome dust exposureso as to make it more portable. A microprojector is used when assessing the samples and for coal-mine dusts the counts are restricted to the range 0 5 to 5 microns. In industrial environments the dust concentration appears to vary with a standard deviation of more than 50% of the mean. Part of this var...
the flame propagation through a coal dust-air mixture in a spherical vessel was studied by means of a one-dimensional, arrhenius-type kinetics and quasi-steady model. the model includes the evaporation of the volatile matter of dust particles into a known gaseous fuel (methane) and the single-stage reaction of the gas-phase combustion. effect of venting devices as safety idea and the radiation ...
the impacts of dust and sand storms (dss) on people, crops, livestock, infrastructure and health are well documented. data have accumulated on the deleterious effects of dust aerosols when they settle on plants. sand blasting of low growing plants is a common cause of failure in reforestation efforts. burial of plants by moving sands are also a cause of much damage. the physics of moving sand a...
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