نتایج جستجو برای: industrials
تعداد نتایج: 197 فیلتر نتایج به سال:
Background and Aim: Sewage of non-metallic and mineral industrials such as tile and ceramic contain a large amount of heavy metals (e.g. Zn, Cr, Cd, Pb) and minerals which can cause problems such as contaminating underground water and polluting the environment. Thus, the present study was done to evaluate heavy metals concentration in the effluent and sludge of the tile factory in Birjand. ...
Background: The heavy metals are the most important pollutants their concentration of which in the environment is increasing in connection with cities and industrials development. One of these metals is chromium which, in the trivalent and Hexavalent oxidation state, is used in industries such as electroplating, glass, ceramic, tannery and leather. Hexavalent Chromium has proven several healt...
DC-DC converters are widely applied in different industrials such the Renewable Energy Sources (RESs) utilizations, Electrical Vehicle (EV) applications and power transmission technologies. Different topologies presented for these including modified Buck, Boost or Buck-Boost converters, switched-inductors switched-capacitor-based structures circuits with transformers. A converter is needed to t...
original article in order to achieve safe conditions at workplace should correctly understand the concept of hazard. in the hazard conceptual and common definition this means that dangerous event or situation that may lead to an emergency or disaster. it could also be a biological, chemical, or physical agent in (or a property of) an environment that may have an adverse health effect, or may ...
Dismantling nuclear facilities leads to radioactive waste less active but which may have highly variable compositions compared the high-level wastes recovered after reprocessing of spent fuel. In this work, we studied ability an alkali-rich glass matrix belonging SiO2-B2O3-Al2O3-Fe2O3-Na2O-Li2O-CaO system solubilize P2O5, MoO3, ZrO2 and Cs2O by melting at 1100°C. Phosphorus, molybdenum, zirconi...
Introduction: Scientific production investigation is a suitable facility to making policy and tacking decision and will provide recognizing of Past situation and also can be effective on aim of scientific movement, Determine Research Priorities and identify Available weaknesses. This study aimed to quality and quantity evaluation of scientific production among Iranian Researchers in the Field o...
Background & Aims of the Study: p-Chloronitrobenzene is a benzoic compound that widely used in many chemical industrials. p-Chloronitrobenzene may be absorbed through the skin and is suspected to causing cancer. So, developing an easy method to remove of it from the environment is necessary. Equilibrium isotherms and adsorption kinetics of p-Chloronitrobenzene onto modified sil...
Background and Objectives: This study was performed to determine and identify the origin, concentration and source of perylene entry and some PAH compounds in surface sediments of Ghalam Goodeh (A), Siyah Kashim (B), and Talab Markazi (C) in Anzali wetland. Materials and methods: We collected 22 samples of sediments (from each region) and 2 samples of soils (from A region) in April of 2012. Sam...
the space structure that governs cities has depended on several corresponding relations and various factors which consist of: population, job and activities, transportation patterns, urban sub-structures, various services and etc that always were connected to each other and have formed its space structure. but since these relations are more complicated in big cities, the importance of paying at...
There is warning about ignoring the environment, in particular solid waste and the problem recently has been taken into consideration by the world (1). Since the generation process has a principal role in waste management, the generators place should not be ignored (2). Fast population growth, industrial development, technological advance, and human desire to increase material consumption and f...
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