نتایج جستجو برای: particulate contamination
تعداد نتایج: 80651 فیلتر نتایج به سال:
Introduction: Environmental pollution also increased by the advancement of technology and the application of industries in human life. Air pollution is one of the major contaminations in the human environment which causes many acute and chronic diseases. This study was conducted to investigate the contamination of PM2.5 and PM10 particles in Khash Cement Company in Sistan and Baluchestan provin...
background & aims of the study: recent studies indicated that particulate matter can have the lung irritation, chronic lung diseases, lung tissue, etc. the aim objective of this study was to assess the mortality associated with exposure to pm10 concentrations in ilam, iran, during 2013. materials & methods: pm10 data were taken from ilam's local agency of environment (i-lae). the annual mo...
results: participants’ concerns were classified into 4 main themes, including: inability, aging, isolation, and healthiness. conclusions: understanding these concerns might contribute to the enrichment of the existing literature by providing evidences from a different culture, assisting to design effective supportive strategies, planning training programs and appropriate infrastructures for wom...
Knowledge on interactions among microbial communities colonizing various streambed substrata (e.g. cobbles, sediment, leaf-litter etc.) is essential when investigating the functioning of stream ecosystems. However, these are often forgotten assessing responses aquatic to chemical contamination. Using a microcosm approach, respective impact two sulfonamide antibiotics (sulfamethoxazole and sulfa...
This paper summarizes parenteral drug contamination case studies presented at industry conferences and a Food and Drug Administration advisory committee meeting in the period of 2000-2004. CGMP deficiencies associated with each contamination event are discussed. The key role of a well-functioning quality system in contamination prevention is emphasized.
Rolling bearings operating in harsh environments are extremely exposed to the risk of exogenous dust or wear debris particles, so there is a strong need investigate effects particulate contamination on bearing operation and identify problems early. The lubricated oil containing silica particles various sizes concentrations prepared introduced into thrust ball replicate severe conditions. Vibrat...
Abstract Following observations of microcracking in two, out three, Additive manufactured (AM) 316L steel samples, an investigation was undertaken to ascertain the root cause. Welding diagrams, taking into account composition and process parameters, could not generally for experimental non-cracked versus cracked AM samples. EBSD phase maps all three samples exhibited a fully austenitic microstr...
Lake Amatitlán in Guatemala is accelerated process of contamination and artificial eutrophication, having a high amount suspended solids, these cause the appearance water to be turbulent. The purpose research was evaluate ability oxygen nanobubble technology minimize all particulate matter reduce turbulence. investigation consisted taking sample 33 m³ with organic load cyanobacteria, Microcysti...
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