نتایج جستجو برای: cement dust
تعداد نتایج: 68914 فیلتر نتایج به سال:
This study measured haematological and liver function parameters in workers occupationally exposed to cement dust in order to test the hypothesis that cement dust exposure may perturb these functions. Assessment of haematological parameters and liver function were performed in 23 workers occupationally exposed to cement dust (mean years of exposure 9.6+/- 1.5 years) and 46 matched unexposed con...
BACKGROUND There are only a few follow-up studies of respiratory function among cement workers. The main aims of this study were to measure total dust exposure, to examine chronic respiratory symptoms and changes in lung function among cement factory workers and controls that were followed for one year. METHODS The study was conducted in two cement factories in Ethiopia. Totally, 262 personal...
prolonged or repeated exposure to cement dust, depending on the duration, level of exposure and individual sensitivity has health implications on the skin, eyes, respiratory and haematological systems. this study assessed cardiovascular disease risk factors and cardiac markers among cement workers of nigerian origin to determine the effects of duration of exposure to cement dust on these parame...
Cement kiln dust produced in a local cement production plant in Saudi Arabia, along with fly ash resulting from combustion of heavy fuel oil in a local power generation plant were utilized as waste materials blended with ordinary Portland cement at various ratios. These blends were tested for their water requirements for normal consistency, initial setting times, and compression and tensile str...
This cross-sectional study was conducted in 1992 in the oldest of three Portland cement producing factories in Eastern Saudi Arabia. The respirable dust level was in excess of the recommended ACGIH level in all sections. Spirometry was done for 149 cement workers and 348 controls, using a Vitalograph spirometer. FEV1, FVC, FEV1/FVC% and FEF25-75% were calculated and corrected to BTPS. A signifi...
OBJECTIVES No data are currently available on the prevalence and characteristics of functional dyspepsia among cement workers. Given the potential impact of dyspepsia on work performance, whether its prevalence is increased among workers exposed to cement dust was evaluated. METHODS Altogether 420 cement workers were enrolled in the study. According to the individual exposure levels to cement...
The present study focuses on exploring an array of alkaline waste residues, procured from diverse sources as means for sequestering maximal CO2. Alkaline waste residues undertaken for the study included: (1) Cement Bag Filter Dust, (2) Finished Cement Sample, (3) Marble Dust and (4) Baghouse Dust. Experiments were conducted in a self fabricated Carbonation reactor under 80% CO2 concentration an...
Greece is a significant cement producing country. The aim of this study was to investigate the prevalence and risk factors of lung function impairment among Greek cement workers. One hundred thirty- seven cement production workers participated in this study. In addition, 110 employees not exposed to cement dust comprised the control group. The concentration of cement total dust at workplace var...
The climategrowth relationships and the variation of the radial growth of Oxalis Myrtillus-site type Norway spruce and Scots pine stands in conditions of different cement dust loads were investigated. The climategrowth relationships were studied during the period from 1946 to 2004. The variation of the mean tree-ring width was studied during three time periods, from 1941 to 1965, from 1966 t...
BACKGROUND Several studies have reported associations between cement dust exposure and adverse respiratory health effects, but there are few follow-up studies and no studies of respiratory health effects following dust control measures. AIMS To assess changes in respiratory health among cement workers and unexposed controls after 1 year in a factory implementing a health and safety campaign w...
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