نتایج جستجو برای: asbestos free
تعداد نتایج: 519794 فیلتر نتایج به سال:
Asbestos causes progressive pulmonary fibrosis (asbestosis), pleural disease (eVusion and pleural plaques), and malignancies such as bronchogenic carcinoma and malignant mesothelioma. Asbestos is a generic term for a group of naturally occurring hydrated silicate fibres whose tensile strength and resilient structural and chemical properties are ideally suited for various construction and insula...
The aim of this work was to inspect the presence asbestos fibers in colon tissue from a patient, with history indirect exposure and affected by cancer, who underwent surgery. Variable pressure scanning electron microscopy, coupled energy dispersive spectroscopy (VP-SEM/EDS), used for identification inorganic their morphological—chemical characterization. Fresh samples both, healthy area close n...
introduction: today, have been approved scientifically relationship between presence of asbestos fibers in the human respiratory area and malignant diseases such as lung advanced fibrosis (asbestosis), gastrointestinal, lung and laryngeal cancers. the aim of this study was the determination of asbestos fibers concentration in yazd city’s air in the summer of 2015. methods: this is a descriptive...
In Italy, use and production of asbestos asbestos-containing materials (ACMs) were banned in 1992, however, the risk exposure to still exists, because most ACMs are located industrial public buildings. A total 111 Italian buildings with friable non-friable surveyed; 500 air samples collected areas where contamination might have occurred. Airborne fiber concentration calculated from was averaged...
detection of trace metals in the cell-free BAL fluid, showing high concentrations of tungsten (W), tantalum (Ta) and cobalt (Co) in hard metal lung disease [163]. The quantification of asbestos bodies is best done by filtration of 5-15 ml fresh BAL fluid, cells included, onto millipore filters, and counting the number of asbestos bodies [179]. Uncoated asbestos fibres can only be counted by ele...
Introduction: Today, have been approved scientifically relationship between presence of asbestos fibers in the human respiratory area and malignant diseases such as lung advanced fibrosis (Asbestosis), gastrointestinal, lung and Laryngeal cancers. The aim of this study was the determination of asbestos fibers concentration in Yazd city’s air in the summer of 2015. Materials and Methods: ...
Asbestos has been banned in many countries as a result of its negative effects on the environment and human health. As result, human-friendly friction material is required to replace asbestos brake pads. Hence, powder metallurgy technique was undertaken develop from locally sourced asbestos-free materials. Seashell used base elements with other additives. The filler considered had particulate s...
Many asbestiform minerals exhibit temperature-dependent thermoluminescence. Since thermoluminescence involves electronic transitions within crystalline materials, the effect of temperature on asbestos cytotoxicity was evaluated. Heat pretreatment of Canadian chrysotile asbestos reduces its cytotoxicity towards cultured human fibroblasts and bovine alveolar macrophages. When monitored 44 hr afte...
In Poland, the use of asbestos was banned in 1997 and asbestos plants have been closed since then. Despite their closure, cases of asbestos-related occupational diseases among former asbestos workers are still being recorded in the Central Register of Occupational Diseases. Between 2001 and 2014, there were 2726 asbestos-related illnesses, classified and reported as diseases associated with occ...
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