نتایج جستجو برای: and international ambient
تعداد نتایج: 16878472 فیلتر نتایج به سال:
asbestos applications were limited during past two decades in developed nations due to its debilitating health problems, while in developing countries it’s various usages continues. the main goals of present study were evaluation of asbestos concentrations in ambient outdoor and indoor air and occupational exposure, as well as exposure effects on pulmonary function. sampling procedure was ca...
As part of an international measurement intercomparison of instruments used to measure atmospheric 222Rn, four participating laboratories made nearly simultaneous measurements of 222Rn activity concentration in commonly sampled, ambient air over approximately a 2 week period, and three of these four laboratories participated in the measurement comparison of 14 introduced samples with known, but...
background: the first stage of the accreditation, process as the most important way of assurance and improvement of the quality of high education process is collection of standards. to describe present and desirable quality of nursing and midwifery postgraduate education via accreditation process in iran, we decided to compile applicable standards in this field, using available international st...
although the use of metaphorical markers in corpora has been studied to a largeextent (e.g., glucksberg & keysar 1993; skorczynska & deignan, 2006; sznjder,2005), no attempt to the best of the researchers' knowledge has been made todescribe metaphorical marking in a comparative analysis of 2 corpora in bothnational and international journals of applied linguistics in iran. the gap envis...
the evaluation of treatment characteristics and sludge properties of an upflow anaerobic sludge blanket (uasb) process was investigated using a pilot-scale 1.15 m3reactor. the uasb, inoculated with digester sludge, was operated at a hydraulic retention time of 8 h at sewage temperatures ranging from 10.6 to 27.7 °c for more than 1100 days. the stable removal efficiencies for total codcr and ss...
the evaluation of treatment characteristics and sludge properties of an upflow anaerobic sludge blanket (uasb) process was investigated using a pilot-scale 1.15 m3reactor. the uasb, inoculated with digester sludge, was operated at a hydraulic retention time of 8 h at sewage temperatures ranging from 10.6 to 27.7 °c for more than 1100 days. the stable removal efficiencies for total codcr and ss ...
BACKGROUND We previously reported a significant association between higher UV radiation exposure before diagnosis and greater survival with melanoma in a population-based study in Connecticut. We sought to evaluate the hypothesis that sun exposure before diagnosis was associated with greater survival in a larger, international population-based study with more detailed exposure information. ME...
the 7th international congress of child and adolescent psychiatry 12-14 may 2015, tehran, iran shahid beheshti university of medical sciences, tehran conference theme: violence prevention and promotion of mental health head of congress: mehdi tehrani-doost, m.d scientific secretary: rozita davari ashtiani, m.d executive secretary: katayoun razjouyan, m.d executive manager: fahima farrahi the sc...
many reports that appeared during the last 20 years have shown that atmospheric pollution causes serious damage to human health and to environment. electricity generation from fuel fossil is one of the major sources of pollution and considerable share of this damage. the price of electricity in iran, as in many other countries also, includes only the production of private costs and ignores any ...
The chemical surfactant flooding can mobilize the trapped oil by lowering the interfacial tension between oil and brine and in some cases altering the reservoir rock wettability. In this work, the effect of surfactants on oil/brine interfacial tension was experimentally investigated. First, the effect of surfactants concentration was surveyed. Afterwards, the effect of salinity on surfactant be...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید