نتایج جستجو برای: tobacco dust
تعداد نتایج: 95939 فیلتر نتایج به سال:
overseen that after blocking pneumoconiosis as a cause of death the probability of a certain cause can then be described by the ratio between the observed number of this cause and the number of all causes of death except for pneumoconiosis. Therefore, this approach yields SMR = (7 + 6.7)/10.14 = 1.35 for the worked example, which even exceeds the originally proposed adjusted risk estimate. Foll...
Investigation and evaluation of dust and microstrip phenomena is one of the important values in the management of climate and environmental hazards in the Middle East, especially in the arid, western, southern and central parts of Iran. Methods and plans for studying this phenomenon and its management are of great importance and great value. According to studies on dust phenomena based on pre...
How different source regions across the Middle East change aerosol and dust particle characteristics
A major question is whether different source regions across the Middle East account for changes in aerosol and dust particle characteristics, which impact Western Iran. Therefore, over a period of sampling from April 2017 to April 2018, dust particles were collected in Western Iran from different cities including Urmia, Sanandaj, Sare-Pole-Zahab, Dehloran and Abadan. The research aim is to comp...
Background and Objective: Heavy metal (HM) pollution of settled dust on the interior surfaces of elementary schools may affect the health of young students; hence, the health risk of such pollution should be assessed. Therefore, the aims of this study were to measure the content of heavy metals in the settled dust in the indoor of elementary schools in Bandar Abbas and to assess the attributed ...
Extended abstract 1- Introduction Dust occurrences as natural events are common in arid, semi-arid and desert areas. Investigation of the dust with internal sources in the Khuzestan province including about 15 percent of the dust events coming to the region and the presence of the annual average of 50 times of the internal dust (with the concentration maximum of PM10 particles more than 8000p...
Background and objectives: Dust storm is a natural event that occurs in arid and semi-arid and There are many adverse consequences. according to the increased number and duration of dust storms and their effects on the environment and human health, present article is to Analysis of dust and dust storms in Iran,Investigation Internal and external origin of dust storms in Iran using sate...
Case 203.-Born in 1911. Started work as a carrier in 1924 for a firm loading lime, cement, tea, and sugar. In 1926 moved to work as storeman to a builder's merchant. Again exposed to lime and cement dust. From 1936 to 1964 worked principally as a plasterer. The histology of this tumour is not known. He never took snuff. Case 204.-Born in 1898. After working as a packman's boy (1910-12) and an a...
Background: The release of metals from industrial factories is one of the most important sources of environmental pollution. The present study aimed to determine the concentration of heavy metals like cadmium (Cd), chromium (Cr), manganese (Mn), nickel (Ni), and lead (Pb) in dust around the cement factory. Methods: A total of 22 dust samples were collected from areas around the cement factory...
The potential of tobacco waste as a viable source of medicinally important flavonoids like rutin has been investigated. Three flavonoids, apigenin, quercetin and rutin, have been isolated from waste tobacco leaves, and their identities have been confirmed by UV-visible, 1H-NMR and 13C-NMR spectroscopy. By using analytical HPLC, the amount of rutin present in the tobacco leaves, before and after...
dust storm is a meteorological phenomenon common in arid and semi-arid regions. iran and particularly its west and south-west parts, periodically faces with the dust phenomenon and its problems. in this investigation two dust samples has been selected and studied that they has sustained over three days with visibility less than 1000m in west of iran. the first one occurred during 18 - 21 april ...
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