نتایج جستجو برای: pollution control

تعداد نتایج: 1389352  

Journal: :محیط شناسی 0
علی جعفری دانشجوی دکتری برنامه ریزی محیط زیست، دانشکدة محیط زیست، دانشگاه تهران مسعود طاهریون دانشجوی دکتری مهندسی محیط زیست، دانشکدة محیط زیست، دانشگاه تهران احمدرضا یاوری دانشیار گروه برنامه ریزی و مدیریت محیط زیست، دانشکدة محیط زیست، دانشگاه تهران اکبر باغوند دانشیار گروه برنامه ریزی و مدیریت محیط زیست، دانشکدة محیط زیست، دانشگاه تهران

water quality trading is a new approach in pollution control which satisfies water quality standards suggesting minimum cost solutions. this method uses tradable discharge permits based on pollution transfer coefficient in a river. this paper tries to establish a water quality trading program in a river basin according to transfer coefficients between pollution sources and evaluate cost effecti...

2012
Motoh Tsujimura

Overview This paper investigates the investment in pollution control equipment under uncertainty. We assume that a firm's output generates a pollution by-product and the pollution reduces the productivity of capital. The dynamics of pollution is assumed to be governed by stochastic differential equation. Then, the firm has to invest in a pollution control equipment in order to reduce the pollut...

Journal: :iranian journal of public health 0
a. omrani m. ghiasseddin

manure and putreseible garbage are some of the main sources of pathogenic germs in countryside’s. on the other hand, demand for fertilizer and energy increases in rural areas every day. to study potential of cow manure for these requirements a 16,5m3 pilot plant was designed and constructed as fermentation tank near animal husbandry of karaj agriculture faculty. some 260kg cow manure and water ...

Journal: :jundishapur journal of health sciences 0
behzad fouladi dehaghi department of occupational health, school of health, ahvaz jundishapur university of medical sciences, ahvaz, ir iran; department of occupational health, school of health, ahvaz jundishapur university of medical sciences, ahvaz, ir iran. tel/fax: +98-6133735318 leila ibrahimi ghavam abadi department of environmental management, ahvaz branch, islamic azad university, ahvaz, ir iran hamid rasi department of occupational health, school of health, ahvaz jundishapur university of medical sciences, ahvaz, ir iran kambiz ahmadi angali department of occupational health, school of health, ahvaz jundishapur university of medical sciences, ahvaz, ir iran

results according to the study results, noise levels in a co2 plant’s house and control room ranged from 88 to 102 db and 79 to 82 db (a), respectively. in order to reduce the amount of emitted noise in the co2 plant house and control room, a noise control plan was implemented in each part of the facility; it was met with effective results. conclusions the findings of this investigation have cl...

Journal: :Mathematical and Computer Modelling 2013
Ping Zhang Yunhui Liu Ying Pan Zhenrong Yu

Improper land use is one major cause of non-point source pollution. Integrated modeling would support the evaluation and optimization of land use for the non-point source pollution control. In this study, the CLUE-S (the Conversion of Land Use and its Effect at Small regional extent) and SWAT (Soil and Water Assessment Tool) models were coupled to simulate pollution loads under different land u...

Journal: :The Yale Journal of Biology and Medicine 1971
Eric W. Mood

The Gm and In V allotypes of serum are inherited in Mendelian fashion and their existence imposes important constraints on current theories of immunoglobulin synthesis. The incidences of particular factors vary markedly with different population groups, a fact of anthropological interest. In medico-legal investigations allotypes can aid in cases of disputed parentage (both paternal and maternal...

2012
Giuseppe Travaglini

In this paper I study the e¤ects of environmental regulation which establishes upper and lower binding targets to pollution emissions. Essentially, I deal with the properties of a stochastic model of pollution control in continuous-time under emission targets and uncertainty, emphasizing dynamic nonlinearities. Inside the targets pollution behaves as if it were freely ‡oating until it hits one ...

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