نتایج جستجو برای: especially in heavy industry
تعداد نتایج: 17027054 فیلتر نتایج به سال:
Wastewaters of several industries such as textile, leather or dye etc., contain dangerous and toxic compounds, even some which are potential carcinogenics. Considering the volume composition, wastewaters textile industry have much more polluting characteristics compared to other industries. Although treatment processes must definitely be implemented in point environment living organisms, many f...
It is important for us to study the factors that impact the petrochemical industry, given its importance in nonoil exports in Iran. The petrochemical industry requires heavy investments and most countries can not directly fund all the required investment, hence the importance of foreign direct investment in the sector. Foreign direct investment also brings with it transfer of technology and e...
Introduction: The present study was aimed to investigate the dimensions of quality of work life and its relation to job satisfaction among workers of automotive industry. Materials and Methods: In this descriptive-analytical study, 150 workers of an automotive industry in Tehran city were chosen by simple random sampling method. Three questionnaires of demographic characteristics, quality of ...
No one would dispute that measures to reduce smoking are one of the most effective public health initiatives that any community can deliver. Nor would they dispute that increases in the retail price of tobacco products are one of the most successful means of reducing tobacco consumption. In Canada, successive tax increases in the early 1990s drove down tobacco consumption before a concerted tob...
Introduction: Health tourism industry is growing in border provinces of the country, especially in the areas where tourists feel more comfortable as a result of distance from stressful urban life. This research was done to promote Health Tourism Industry in Ardabil. Methods: This is an analytic study. The data were gathered by means of library technique f...
due to the lack of water quality of resourses in country, exact review of available water resources quality, especially in terms of heavy elements (heavy metals) has a particular importance. due to industrial towns 1 and 2 of yasuj city and also yasuj wastewater treatment, surveying environmental harmful effects of heavy metals on this river is very important. to investigate the changes of heav...
plants are the most common bioindicatorsused in air quality biomonitoring studies because they are immobile and they have more sensitive to the most prevalent air pollutants than humans and animals. to identify the concentrations and sources of heavy metals in ornamental plants of isfahan landscape, samples of leaves and soil around pinuseldarica and nerium oleander were collected at different ...
The prevalence of various pollutants like nitrogenous, sulphurous, phosphorous compounds, heavy metals, and organic compounds has seriously threatened the sustainability of natural ecosystems and is thus interfering with the natural biogeochemical cycling. Chemical pollution of water bodies can cause serious damage to environmental quality because many of these pollutants are extremely toxic an...
Background and Objective: Street dust is considered as one of the important sources of particulate matters and heavy metals in the atmosphere. The goal of this study was to assess the heavy metals pollution in street dust of Tehran and evaluate their ecological risk. Materials and Methods: The sampling of street dust was carried out in two areas at the east and west of Tehran. After preparatio...
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