نتایج جستجو برای: cement dust

تعداد نتایج: 68914  

ژورنال: طب کار 2012
اصلانی, مریم, امینیان, امید, صادق‌نیت‌حقیقی, خسرو,

Background: Although one of the most important occupational hazards in cement industry is the effect of cement dust exposure on respiratory system, there is controversy about the relationship between exposure to cement dust and respiratory symptoms and pulmonary function impairment. Our aim was to assess the effects of cement dust exposure on respiratory symptoms and lung capacities of cement w...

Journal: :acta medica iranica 0
omid aminian department of occupational medicine, occupational medicine research center, tehran university of medical sciences, tehran, iran. maryam aslani department of occupational medicine, occupational medicine research center, tehran university of medical sciences, tehran, iran. khosro sadeghniiat haghighi department of occupational medicine, occupational medicine research center, tehran university of medical sciences, tehran, iran.

cement dust exposure is associated with increased respiratory impairment. as the major occupational hazard in the cement production industry is cement particles, our aim was to more thoroughly examine the acute effects of occupational exposure to cement dust on the respiratory system. a cross-shift study was conducted in a cement factory in iran. 100 high exposed workers from production and pac...

مهدوی آکردی, مهدی, رقیمی, مصطفی , شمعانیان, غلامحسین , قلی پور, محسن ,

Portland cement could be produced by heating the raw materials (clay, limestone) about 1500°C which clinker will be formed. Geochemical and mineralogical studies of clinker, Portland cement, cement kiln dust and cement mill dust have been carried out by optical microscopy, X-ray diffraction and X-ray florescence. In phase system diagram (CaO-Al2O3-SiO2), chemical components of clinker cement oc...

Journal: :international journal of environmental research 2014
h. dąbkowska- naskręt h. jaworska j. długosz

limestone, exploited near bielawy, a town located in the kujawsko-pomorskie province ofpoland, is the main raw material in the production process in a cement plant. the dust emitted by the factory is of alkaline ph and contains such heavy metals as: cadmium (cd), lead (pb), chromium (cr) and nickel (ni). the research aims at assessing the influence of cement dust on the total content and bioava...

Journal: :acta medica iranica 0
hossein kakooei department of occupational health, school of public health, tehran university of medical sciences, tehran, iran. abdollah gholami department of occupational health, school of public health, tehran university of medical sciences, tehran, iran. mehdi ghasemkhani department of occupational health, school of public health, tehran university of medical sciences, tehran, iran. mostapha hosseini department of biostatistics, school of public health, tehran university of medical sciences, tehran, iran. davoud panahi department of occupational health, school of public health, tehran university of medical sciences, tehran, iran. golamreza pouryaghoub center for research on occupational diseases, tehran university of medical sciences, tehran, iran.

dust can be produced by almost all production processes in portland cement factory. dust exposure potentially can affect respiratory function. but evidence for respiratory effect of cement dust exposure has not been conclusive. in this study we assessed effect of cement dust exposure on respiratory function in a cement production factory. a respiratory symptoms questionnaire was completed and p...

2017
Jarrah Alzubi

Corresponding Author: Saeid Abu-Romman Department of Biotechnology, Faculty of Agricultural Technology, Al-Balqa’ Applied University, Al-Salt 19117, Jordan Tel: ++962 5 3532519; Fax: ++962 5 3530469. Email:[email protected] Abstract: Air pollution exerts detrimental effects on plant ecosystems and restricts agricultural productivity. Cement dust is considered to be one of the most harmful air...

Journal: :Saudi medical journal 2004
Sultan A Meo

Even in the 21st century, millions of people are working daily in a dusty environment. They are exposed to different types of health hazards such as fume, gases and dust, which are risk factors in developing occupational disease. Cement industry is involved in the development of structure of this advanced and modern world but generates dust during its production. Cement dust causes lung functio...

2014
A.V.S.Sai. Kumar

Concrete a composite material made from cement, water, fine aggregate and coarse aggregate. But present researchers are in interest of finding new cement materials by waste materials or waste products produced from industries which are harmful to environment. The present paper deals with partial replacement of cement with quarry dust and metakaolin which are having silica used as admixture for ...

ابراهیم نژاد, پدرام , بانشی, محمدرضا , شکری, احمدرضا , فقیهی زرندی, علی , محسنی تکلو, حسین , پناهی, داود , گلبابایی, فریده ,

Introduction: Exposure to respirable fraction of cement dust and its crystalline silica content is the most important occupational risk factor in cement industries requiring more evaluation and monitoring. This study aimed to assess exposure to crystalline silica and cement dust among workers of a cement industry in Saveh city, Iran. . Material and Method: In this cross-sectional study, 62 s...

ABSTRACT: Overall plant growth and microbial biomass can be effected by dust accumulation. The chloroform fumigation-extraction method was used to evaluating the effect of cement dust pollution emitted from Kurdistan cement factory on soil microbial biomass carbon. Chlorophyll content (a, b and total) of plants species was measured in different distance from cement factory. Mic...

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