Owens Lake, California, a saline terminal lake desiccated after diversion of its water source, was formerly the single largest anthropogenic source of fugitive dust in North America. Over 100 billion m 3 yr 1 of fresh water are projected to be used for mandated dust control in over 100 km of constructed basins required to be wetted to curtail emissions. An extensive evaporite deposit is located...

OBJECTIVES Suspended indium dust in an indium-recycling plant was quantified, in order to improve the work environment and to reduce workers' exposure to the dust. METHODS Assessment of indium dust in the workplace air by multipoint area sampling and personal breathing zone sampling was conducted twice in 2004 and 2008. RESULTS In 2004, all recycling processes except for purity analysis wer...

introduction thermal infrared integrated dust index (tiidi) is one of indices that is presented in this direction. the index operates based on four brightness temperature difference including wavelengths 3.7, 8.6, 11 and 12 micrometer. according to the studies, btd (bt12-bt11) is used for cloud detection. btd (bt8.6-bt11) is the index for separation for dust from sandy surface and btd (bt3.7-bt...

Lead in house dust has long been recognized as a principal source of excess lead absorption among children at the Bunker Hill Superfund Site (BHSS) in northern Idaho. House dust lead concentration from homeowner's vacuum cleaner bags has been monitored since the epidemic of childhood lead poisoning in 1974. Geometric mean house dust lead concentrations decreased from >10000 mg/kg in 1974 to app...

We present the second of two papers concerning the origin and evolution of local early-type galaxies exhibiting dust features. We use optical and radio data to examine the nature of active galactic nucleus (AGN) activity in these objects, and compare these with a carefully constructed control sample. We find that dust lane early-type galaxies are much more likely to host emissionline AGN than t...

mineral dust is produced from both natural and anthropogenic sources. dust aerosols can be transported over long distances in the atmosphere. they reduce the incident shortwave radiation to the surface by absorbing and scattering the solar radiation; thereby leading to a cooling effect at the surface and lower tropospheric temperature. on the other hand, by absorption and re-emission of longwav...

Bed bugs have reemerged recently as a serious and growing problem not only in North America but in many parts of the world. These insects have become the most challenging pest to control in urban environments. Residual insecticides are the most common methods used for bed bug control; however, insecticide resistance limits the efficacy of treatments. Desiccant dusts have emerged as a good optio...

introduction: recently, air pollution due to the occurrence of dust storms is one of the worst environmental problems in western and southwestern iran, especially the khuzestan province (12, 13). according to the reports of the meteorological organization of iran the average number of dusty days in the cities of ahvaz and abadan in the khuzestan province reaches 68 and 76 days each year, respec...

Intervention studies of cotton steaming to reduce biological effects of cotton dust. Previous exposure chamber studies had suggested that steaming cotton could reduce significantly the levels and the biological effects of cotton dust. Therefore an intervention study using a high capacity steamer was designed to test the effectiveness of this process in a single cotton mill. The mill population ...