نتایج جستجو برای: they also creates heavy hazards thus
تعداد نتایج: 3604062 فیلتر نتایج به سال:
Introduction: Due to the continued urbanization and industrialization in most parts of the world, metals are constantly being introduced into the soil environment and posing a major threat to human health. The purpose of this study was to investigate the contamination of Esfarayen surface soils with heavy metals and its hazards to human health. Methods: Surface soil samples were collected from ...
background: incense and joss stick are generally used in the world. most products were made in small household factories. there are many environmental and occupational hazards in these factories. objective: to evaluate the workplace environmental and occupational hazards in small household incense and joss stick factories in roi-et, thailand. methods: nine small household factories in rural are...
malaysia is affected by moderate environmental disasters but seldom affected by severe disaster. cameron highland mud floods 2013, hulu langat landslide 2011, tsunami 2004 and highland tower 1993 are some of environmental disaster in malaysia. some of these disasters carry heavy price tags as property and lives are damaged beyond full compensation and repair and health effects as well. this pap...
the importance of writing as a complex skill in applied linguistics has drawn the attention of many researchers to evaluate textbooks in order to help learners gain self-sufficiency and autonomy in the field of language use and communication. investigations have shown that developments in textbooks evaluation can promote the quality of pedagogies and consequently the learning. this study attemp...
Background: Kalahari truffle (Kalaharituber pfeilii) is found in the Kalahari desert and nearby regions (Africa). This study assessed the microbiological quality and safety, mycotoxins, and heavy metals contents of raw Kalahari truffle sold in Namibia. Methods: Batches of Kalahari truffles were purchased from informal markets and different vendors in Namibia. Total aerobic, coliform, yeast, an...
background: composition of dust in the air due to contact with human via inhalation, ingestion and skin absorption will have a large impact on public health. in the learning environments such as universities, many people spend most of their day in contact with the dust. the purpose of this study was to evaluate the concentration of heavy metals lead, chromium and copper in the training space of...
abstract i the purpose of this study was to launch a thorough investigation concerning the possibility of differing orientations to the writing proficiency construct by native and non-native english speaking teacher raters. it mainly revolved around the international english language testing system (ielts) that is widely administered and employed as a measure of general proficiency in englis...
background: most of the studies have reported higher occupational health hazâards on hazardous waste workers (hww). however reports regarding the assoâciation between health hazards and pro-inflammatory cytokines in hww are scanty. the present study was undertaken to evaluate the relationship between occupational health hazards and serum pro-inflammatory cytokines in hww. methods: one hundred...
in the area of vocabulary teaching and learning although much research has been done, only some of it has led to effective techniques of vocabulary teaching and many language learners still have problem learning vocabulary. the urge behind this study was to investigate three methods of teaching words. the first one was teaching words in context based on a traditional method of teaching that is,...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید