background and aims: since using city power for welding process is not allowed, diesel generators are used as a power supply in construction industries. they could be introduced as a main source of noise pollution. the purposes of this study were to assess and control noise pollution produced by construction diesel generators in hamadan, iran. methods: in this descriptive, cross-sectional study...

Results of an epidemiology study of populations living near a freeway and in the high desert area of Southern California for levels of platinum, palladium and lead are presented. Three age groups (children, young adults, and mature adults) were sampled twice for blood, urine, hair, and feces. Air, water, and soil samples were collected in the areas of the residences of the two populations. The ...

This research introduces the scale of innovation intensity (SIIN) based on meta-taxonomy that subsumes other, less comprehensive taxonomies. The SIIN is similar to seismic scale used to measure the intensity of earthquakes. The intensity of technological change is measured by an indicator, called Magnitude, based on the impact of technological innovations on the economic system. The theory is a...

In this work, measures are being developed to reduce the noise level at workplace of a mechanic-repairman replace filter cloth. Based on results production control and thorough assessment working conditions, source was determined be VDN-17 fan. The analysis Russian foreign studies in field negative impact human health methods dealing with industrial has been carried out. As result, technical me...

Based on the experimental work of a refrigerator compressor with soft suction structures, the new soft suction structures were put forward. The performance of the compressor and the frequency properties of noise were also studied by means of tests. The results showed that these structures could reduce the noise of compressor. The main experiments included refrigeration capacity, COP, vibration,...