نتایج جستجو برای: global warming

تعداد نتایج: 462443  

Journal: :international journal of occupational and environment medicine 0
sc walpole north yorkshire and east coast deanery s singh school of population health, university of auckland n watts international federation of students’ associations (ifmsa)

[no abstract available]

Journal: :international journal of occupational hygiene 0
mohammad reza monazzam esmaeil pour department of occupational hygiene, school of public health and center for air pollution research (capr), institute for environmental research (ier), tehran university of medical sciences, tehran, iran rohollah hajizadeh phd student, occupational health research center, qom university of medical sciences, qom, iran mohammad hossein beheshti department of occupational health engineering, school of public health, gonabad university of medical sciences, gonabad, iran zeinab kazemi phd student in ergonomics. department of occupational health engineering, school of public health, tehran university of medical sciences, tehran, iran marzieh monazzam m.sc, bs. student, department of architecture, kashan university, kashan, iran

original article   introduction: direct sunlight and increased heat load influence mental and physical health of workers negatively and result in performance impairment. activity reduction is a natural body response to increase in internal body temperature, and a compensatory mechanism to make body balanced. this study was carried out to estimate productivity loss due to heat exposure among ira...

Journal: :natural environment change 0
yousef ghavidel rahimi associated professor in climatology, department of physical geography, tarbiat modares university, tehran, iran meysam tolabi nejad m.sc. in applied climatology, tarbiat modares university, tehran, iran manouchehr farajzadeh asl full professor in climatology, department of physical geography, tarbiat modares university, tehran, iran

climate change disturbs the distribution of precipitation patterns and affects water resources. a lot of evidences imply that the increased atmospheric concentration of greenhouse gasses in turn increases the precipitation changes around the world. thus, since iran is located in an arid zone of the earth, identifying the effects of co2 concentrations on iran precipitation rate is highly importa...

Journal: :international journal of environmental research 2010
f.c. sham t.y. lo h.t. lum

global warming is one of the major concerns in environmental issues. its effects are being exposed faster than anticipated recently. it causes adverse ecological and socioeconomical effects. the 4th assessment report issued by the u. n.’s intergovernmental panel on climate change (ipcc) states that it is appropriate to define global warming was caused by greenhouse gases due to human activities...

Journal: :iranian journal of public health 0
majid habibi mohraz asghar ghahri mehrdad karimi farideh golba­baei

background: the workers who are working in the open and warm environments are at risk of health effects of climate and heat changes. it is expected that the risk is increase with global warming. this study aimed to investigate the changes of wet bulb globe temperature (wbgt) index in the past and to predict their trend of future changes in tehran, capital of iran. methods: the meteorological da...

Journal: :international journal of occupational and environment medicine 0
the ijoem

0

Journal: :international journal of automotive engineering 0
gaurav r. kumar

air conditioning refrigerant r134a has value of global warming potential (gwp) 1300, which is much higher than mac directive (gwp below 150) passed in july 2006. this prompted a search for alternative refrigerant with gwp value less than 150. r1234yf is a new refrigerant which has lower gwp value of 4. effect of blower speed has been compared and flammability issue of r1234yf has been addressed...

Journal: :ecopersia 2013
abbas farshad

global warming is claimed to be the cause of climate change, which is often held responsible for water shortage.  let geopedology represents the complex process of soil formation, out of which much can be learnt about paleoecology; soil formation being a dynamic interaction between the atmosphere, biosphere, lithosphere, and the hydrosphere. in a multidisciplinary sustainability-oriented study ...

Journal: :journal of sciences, islamic republic of iran 2009
m. asgharian rostami

an abrupt global warming event has been recorded in many parts of the world in sediments of latest maastrichtian age between 65.45-65.10 ma. this warm event was documented here at a section near ziyarat-kola in central alborz based on analysis of planktonic foraminifera. an unusual abundance of normally large-size species such as globotruncana arca, globigerinelloides subcarinatus, pseudoguembe...

Journal: :international journal of occupational and environment medicine 0
andrew punton university of dundee medical school, dundee, uk elizabeth j crossley hull york medical school, university of york, york, uk natasha r matthews hull york medical school, university of york, york, uk sarah c walpole hull york medical school, university of york, york, uk

[no abstract available]

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