نتایج جستجو برای: permissible limit

تعداد نتایج: 194655  

2016
Jeremy R. Cole Ying Xu David Reitter

Armed conflicts around the world produce displacement, injury, and death. This study examines how anonymous and pseudonymous Internet commenters discuss such conflicts. Specifically, we ask how permissible it is to express positive or negative sentiments about these conflicts as a function of variables including region, conflict nature, and severity. Data from the Armed Conflicts Database is ag...

Journal: :Journal of environmental biology 2007
K Shailaja Mary Esther Cynthia Johnson

Fluoride is a naturally occurring toxic mineral present in drinking water and causes yellowing of teeth, tooth problems etc. Fluorspar, Cryolite and Fluorapatite are the naturally occurring minerals, from which fluoride finds its path to groundwater through infiltration. In the present study two groundwater samples, Station I and Station II at Hyderabad megacity, the capital of Andhra Pradesh w...

2016
Paschal Ikenna Enyinna

Radiological risk parameters associated with aircrew members traveling from Houston Intercontinental Airport to Lagos International Airport have been computed using computer software called EPCARD (version 3.2). The mean annual effective dose of radiation was computed to be 2.94 mSv/year. This result is above the standard permissible limit of 1 mSv/year set for the public and pregnant aircrew m...

Journal: :Environmental Health Perspectives 2001
H Y Chang Y M Lin P C Hsu Y L Guo

A 34-year-old male laboratory worker suffered from asthenospermia and fertility problems. He was suspected of having been exposed to solvents used at work due to a malfunction of the ventilation system in his laboratory from August 1996 to April 1997. A laboratory walk-through and air and bulk sample collection were performed to determine the possible exposure levels of chemical hazards in his ...

2004
Chris Jones Peter Cox Chris Huntingford

Climate change will affect climate-carbon cycle feedbacks such that permissible emissions to achieve stabilisation will need to be substantially lower than hereto expected. This is especially true for higher stabilisation levels with reductions to total permissible emissions of over 30%. There is an “optimal pathway” to each stabilisation level, defined as that allowing maximum permissible emis...

Journal: :iranian journal of public health 0
m riazipour aa imani fooladi m razzaghi-abyaneh

background: rice is one of the crops, which are prone to be contaminated with toxigenic fungi and their mycotoxins. this study aimed to investigate the natural occurrence of t-2 toxin in domestic and imported rice in iran. methods: in a cross-sectional descriptive study in winter 2007, 140 samples of imported rice (125 samples of thai and 25 sam­ples of pakistani rice) and 60 samples of iranian...

2011
Hitoshi Yano Kota Matsui

In this paper, two kinds of fuzzy approaches are proposed for not only multiobjective stochastic linear programming problems, but also multiobjective fuzzy random linear programming problems through a probability maximization model. In a probability maximization model, it is necessary for the decision maker to specify permissible values of objective functions in advance, which have a great infl...

روشنایی, قدرت‌ا..., شکوهی, رضا, صمدی, محمدتقی, لیلی, مصطفی, پیرمغانی, امین,

Background and purpose: In this study, we investigated the ethion insecticide residues in greenhouse cucumber and the effects of some procedures in reducing its amount before consumption in Hamadan, 2015. Materials and methods: Five greenhouses were randomly selected and in spring a total of 90 samples was analyzed for the effects of treatments including washing for 2 min and different s...

Hossein Jafari Mansoorian, Ali Saifour Mofrad, Gharib Majidi, Maryam Sadat Tabatabai Majd, Mohammad Fahiminia, Mohsen Ansari, Reza Ansari Tadi,

Background: This study aimed to evaluated trends for iron and manganese concentrations in wells, reservoirs, and water distribution networks in Qom city during the summer of 2012. Methods: This was a cross-sectional study. The studied scopes consisted of groundwater (60 wells), reservoirs (10 tanks), and water distribution network (33 points). One sample was taken from each source monthly. Stat...

Journal: :international journal of environmental research 0

various physico chemical characteristics of the river ganga in varanasi were studied in the oct 2005 to nov 2006. ecological parameters like dissolved oxygen(do), ph, nitrate(no3-), po43- and bacterial population were analyzed and compared with standard permissible limits to assess the best designated use of the river water for various purposes. study revealed that the water quality at varanasi...

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