نتایج جستجو برای: photoreactor design and scale
تعداد نتایج: 16990655 فیلتر نتایج به سال:
Background and purpose: Chlorophenol compounds are refractory and toxic contaminants that enter the environment as a result of industrial activities. They can contaminate water sources through leaking into the groundwater or being washed out from polluted soil. The aim of the present study was to evaluate the rate of 4-Chlorophenol (4-CP) degradation using the UV/NaPS process. Materials and ...
Background & objectives: The release of dyestuff wastewaters produced in textile industry into receiving waters affects both human health and the environment. The aim of this study was to investigate the efficiency of a photocatalytic UV/persulfate process in removal of methylene blue and acid green 3 dyes from aqueous solutions. Methods: The current study was an experimental study, in which t...
Most successful crime prevention efforts take the approach of "designing out crime" through the identification of highly specific crime problems and the development of preventive efforts to reduce them (Clarke, 1992). A study of the design, maintenance and management of "Metro," Washington, DCs subway system, allows for the novel approach of evaluating an effort to design in security at the out...
واحد تاپینگ پالایشگاه گاز خانگیران که انتگراسیون حرارتی آن، موضوع این پایان نامه می باشد، یکی از واحد های صنعتی کشورمان می باشد که لزوم بهینه سازی انرژی در آن احساس می شود. شبیه سازی واحد تاپینگ پالایشگاه گاز خانگیران، با استفاده از نرم فزار aspen plus 11.1 انجام شد. با استفاده از نتایج به دست آمده و با توجه به محدودیت های ساختاری واحد و همچنین با در نظر داشتن نیاز واحد، تصمیم بر آن شد تا خوراک...
gol-e-gohar iron ore mine of sirjan in southern part of iran is a large open pit that operates below the groundwater table and during mining operation, dewatering is required to prevent operation processes from flooding. current operation is going on by digging wells in or out of the pit and pumping to prevent flooding. as a result of the former dewatering operation a vast deep cone of depressi...
abstract cooperative learning refers to small groups of learners working together as a team to solve a problem, complete a task, or accomplish a common goal. in a cooperative environment one’s success is directly related to the success of other members because the focus on the individual shifts towards the group. to test the effectiveness of the method, using jigsaw technique, a study was cond...
Backgrounds and Objectives: Carcinogenic and mutagenic potential of some azo dyes as a category of common dyes in different types of industries has been reported. The degradation of one commercially available dyestuff [C.I. Reactive Red 198 (RR 198)] by means of ultraviolet radiation (UV), ultrasonic irradiation (US), UV/H2O2 and US/H2O2 processes was investigated.Materials and Methods: Photoly...
just as motivation is important in sla research, demotivation constitutes an important factor, too. there are many studies done on demotivation and burnout of teachers. many of these studies have been conducted on one or two aspects of english instruction. consequently, there are few studies which have been done on more than two aspects of english teaching. the aim of this study is to find out ...
A fast low-power 1-bit full adder circuit suitable for nano-scale CMOS implementation is presented. Out of the three modules in a common full-adder circuit, we have replaced one with a new design, and optimized another one, all with the goal to reduce the static power consumption. The design has been simulated and evaluated using the 65 nm PTM models.
background: organic nitrates relax all kinds of smooth muscle , not only vascular smooth muscle , a fact that has allowed the use of these drugs to treat many different aliments. objective.-the purpuse of this study was to examine prosepectively benefical effects , if any, of sublingual nitroglycerin on the pain of renal colic. design.- prospective , randomised , double blind, placebo- contoled...
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