نتایج جستجو برای: direct blue 71

تعداد نتایج: 549981  

Journal: :iranian journal of health sciences 0
hamed biglari department of environmental health engineering, school of health, gonabad university of medical sciences, gonabad, iran nasibeh javan health promotion research center, zahedan university of medical sciences, zahedan, iran rasoul khosravi department of environmental health, school of medical sciences, birjand university of medical sciences, birjand, iran amin zarei

background and purpose: azo dyes including direct blue 71 (db71) are toxic, mutagenic and carcinogenic contaminants in effluents of industries. this study aimed to investigate the adsorption of db71 from aqueous solution onto pistachio hull waste (phw) as a low-cost adsorbent. materials and methods: a series of experiments were performed via batch adsorption technique to examine the effect of t...

Journal: :مجله تحقیقات سلامت 0
mohammad ali mooji محمدعلی موجی masoumeh tabatabaee معصومه طباطبایی

introduction: textile industries produce large volume of colored dye effluents which are toxic and removal of dyes from wastewater is a significant environmental issue. advanced oxidation process (aops) is alternative method for the complete degradation many organic pollutants. zno and tio2 are important photocatalysts with high catalytic activity that have attracted much research attention. ma...

Journal: :journal of advances in environmental health research 0
yahya zandsalimi environmental health research center, kurdistan university of medical sciences, sanandaj, iran anoushiravan mohseni-bandpei department of environmental health, faculty of health, shahid beheshti university of medical sciences, tehran, iran hiua daraei environmental health research center, kurdistan university of medical sciences, sanandaj, iran loghman alaei institute of biochemistry and biophysics, university of tehran, tehran, iran sang w. joo school of mechanical engineering, yeungnam university, gyeongsan 712-749, republic of korea

. the sonocatalytic activity of nano-sized zno powder was studied via the degradation of the direct blue 71 azo dye. the nano-sized zno powder that was selected was the same as that which was synthesized and characterized in our previous study. the influences of six operational parameters including the initial ph, the initial concentration, the dose of sonocatalyst, the ultrasound frequency, th...

Journal: :Journal of Applied Sciences and Environmental Management 2002

Journal: :محیط شناسی 0
راضیه عسگری دانشگاه تربیت مدرس بیتا آیتی دانشگاه تربیت مدرس- دانشکده مهندسی عمران و محیط زیست- گروه مهندسی محیط زیست

1- introductionthe presence of synthetic dyes in water and wastewater causes toxicity to aquatic life and bacteria and changes the brightness, color and clarity of the water. common treatment methods for these compounds are not capable of complete mineralization. therefore, new methods are needed to maximize the efficiency. among them, advanced oxygen processes (aops), especially photocatalytic...

Introduction: High volumes of wastewater along with contaminants, such as colloids and dyes are discharged from different industries into the environment. These wastewaters create major problems and serious threats for water resources. Therefore, it is essential to treat such wastewaters and reach the effluent discharge standards. In this regard, chitosan as a coagulant has a comparable perform...

Journal: :jundishapur journal of microbiology 0
pooneh rahimi department of hepatitis and aids, pasteur institute of iran, tehran, ir iran tehran, ir iran; department of hepatitis and hiv, pasteur institute of iran, tehran, ir iran. tel: +98-2166969291, fax: +98-2166969291 akram roohandeh pharmaceutical science branch, islamic azad university, tehran, ir iran amir sohrabi department of molecular medicine, school of advanced medical technologies, tehran university of medical sciences, tehran, ir iran ehsan mostafavi department of epidemiology, pasteur institute of iran, tehran, ir iran golnaz bahram ali department of hepatitis and aids, pasteur institute of iran, tehran, ir iran tehran, ir iran

conclusions the c genotype should be considered as the prevalent ev71 circulating genotype in iran, particularly in cases of aseptic meningitis. patients and methods viral rna was extracted from 170 cerebrospinal fluid samples obtained from children aged under 8 years with a primary diagnosis of aseptic meningitis. specific ev71 pcr was conducted to identify the genotype of the detected ev71 vi...

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