نتایج جستجو برای: and water quality as environmental indicators
تعداد نتایج: 17551394 فیلتر نتایج به سال:
Introduction: with the start of planning in the new form in rural areas, there is a conflict between the demand of villagers from below with the view of planners from the above that there is no normative view of issues and little attention to the environmental quality of development, that have influence on deepening the conflict. Aims: determining the dimensions of environmental quality in rura...
there is less published research about how teachers in efl contexts respond to students who are relatively less mature and less competent l2 writers. while writing researchers have examined various issues concerning peer and teacher response in writing-oriented classes, little research has centered on the effect of collaborative tasks particularly dictogloss on writing skills. output collaborat...
1. introduction world bank, in a report on our country, has named the following factors as the water challenges facing the country: decrease in per capita recoverable water, loss of water quality, inefficient use of effective consumption monitoring in industry and agriculture, soil salinity, the poor quality of maintenance and preservation of reservoirs, restrictions on the recoverable cost and...
in this thesis, a new optically active poly(amide-imide) (pai) was synthesized by the indirect polycondensation reaction of the l-phenylalanine based diacid chloride and 4,4?-diaminodiphenylether in the presence of triethylamine in n-methyl-2-pyrrolidone. the formation of pai was confirmed by ftir, 1h nmr and elemental analysis. in next step, the surface of titanium dioxide (tio2) nanoparticles...
the lake urmia and satellite wetlands was selected as a demonstration site for the undp/gef/doe conservation of iranian wetlands project. this project aims to demonstrate reduction of the major threats of this wetland protected area coordinated through an integrated management plan. we developed a choice experiment to examine public preferences and elicit their willingness to pay on improvement...
the lake urmia and its satellite wetlands have been selected as a demonstration site for the united nations development program / global environment facility / department of environment conservation of iranian wetlands project. this project aims to demonstrate reduction of the major threats of this wetland protected area coordinated through an integrated management plan. a choice experiment was...
iranian industries are increasingly concerned with sustainable development by controlling their impacts on environment. iranian automotive industries have began conducting environmental management within a structured management system based on iso 14001 international standard since 1997. iran khodro co. (ikco), the largest iranian automotive manufacturer, implemented ems entire the company in 2...
Background & objectives: Environmental health is one of the major challenges of sustainable development in most countries. Environmental health indicators are very important because they reflect the changing state of peoplechr('39')s living environment and the existing health threats. This study aimed to investigate the trend of changes in indicators related to environmental health in the citie...
Qualitative status of the environment is signaled by a group of indicators, known as bioindicators, several of which are responsible for showing progressive impacts of different types of pollutants. Having addressed the influence of various bioindicators in environmental pollution, it has been revealed that bioindicators are sensitive to any disturbance in any environment. With regards to the p...
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