نتایج جستجو برای: hydrogen peroxide and environment

تعداد نتایج: 16902844  

ژورنال: مواد پرانرژی 2012
بابایی, سعید, ذرعی, محمد علی, علی‌پور, محمد, قنبری‌پاکدهی, شهرام,

  Concentration of hydrogen peroxide to military grade (about 98 wt%) needs removal of impurities from hydrogen peroxide of commercial grade. In this research, separation of metallic impurities from hydrogen peroxide solution was studied and cations as Al, Fe, Pb, Zn and Cr were separated from commercial hydrogen peroxide using Amberlite IR-120 (strong cationic resin). The cations were separate...

Journal: :acta medica iranica 0
z. hussain-khan1 a. a. soleimani m. farzan

hydrogen peroxide, an oxidizing agent used in surgery for its antiseptic properties, has been associated with life-threatening complications. we report a case of suspected gas embolism following irrigation of a tibial bone cyst with hydrogen peroxide in a five year-old boy under general anesthesia, who died despite resuscitative measures and a long stay in the intensive care unit.

Journal: :journal of chemical health risks 0
e. asl moshtaghi department of horticultural science, college of agriculture,shiraz university, shiraz, iran. a.r. shahsavar department of horticultural science, college of agriculture,shiraz university, shiraz, iran.

two groups of olive cultivars were characterized as showing low (tokhmkabki) and high (roghani) rooting percentage after application of iba treatment. semi-hard wood cuttings were dipped in h 2 2 o 2 (0-3.5% w/v) and iba (4000 mg.l -1 ) and also they were investigated in combination. h 2 o 2 alone did not stimulate rooting of olive cuttings and there were no significant differences between this...

Journal: :journal of dental biomaterials 0
horieh moosavi associate professor, dental materials research center, operative dentistry department, school of dentistry, mashhad university of medical sciences, mashhad, iran. hila hajizadeh associate professor, operative dentistry department, school of dentistry, mashhad university of medical sciences, mashhad, iran. mina shaykhvasy school of dentistry, mashhad university of medical sciences, mashhad, iran.

abstract statement of problem: bleaching systems with different concentrations and applications are widely used to improve the visual appearance of the teeth, but one of the complications of these materials is reduction of bond strength for immediately bonding to the bleached enamel. objectives: the aim of this study was to evaluate the influence of using different modified hydrogen peroxide bl...

Journal: :environmental studies of persian gulf 2014
amirhosein zaribafan kamalaldin haghbeen mostafa fazli alimohammad akhondali

hydrogen peroxide is an important mild oxidant which is widely used in various applications including remediation of waste waters and drinking water resources. the safe level of h2o2 residue has to be controlled through accurate and precise measurement methods. a facile spectrophotometric method for the determination of hydrogen peroxide is based on the reaction of iodine solution with toluidin...

ژورنال: طب مکمل 2017
جدیدی, علی, صدرکیا, غلامرضا, گلی طالب, محمد,

Introduction: March medicinal plant with the scientific name of Peganum harmala L., is considered as herbaceous species which is traditionally used as an antimicrobial drug in the treatment of infectious diseases. This study aimed to compare the antimicrobial effect of Peganum harmala smoke and hydrogen peroxide solution on the microbial load in the hospital wards. Methods: This study was a tr...

Journal: :iranian journal of toxicology 0
رضا تاجیک reza tajik phd student, department of occupational and environment health, tarbiat modares university, tehran, iran حسن اصیلیان hasan asilian department of occupational and environment health, medical sciences, tarbiat modares university, tehran, iran. علی خوانین ali khavanin department of occupational and environment health, medical sciences, tarbiat modares university, tehran, iran. احمد جنیدی جعفری ahmad jonidi jafari department of occupational and environment health, medical sciences, tarbiat modares university, tehran, iran. بابک عشرتی babak eshrati department of statistics and epidemiology, arak university of medical sciences, arak, iran. اردلان سلیمانیان ardalan soleimanian department of occupational and environment health, tarbiat modares university, tehran, iran. جابر قره داغی

background: poly chlorinated biphenyls (pcbs) are a class of chlorinated organic chemicals that do not easily degrade in the environment. this study was conducted to determine the effect of microwave rays, hydrogen peroxide, dioxide titanium and ethanol solvent on the degradation of pcbs. methods: a 900w domestic mw oven with a fixed frequency of 2450 mhz was used to provide mw irradiation. ray...

Journal: :environmental health engineering and management 0
sohrab golmohammadi environmental engineering (trends water and wastewater), kurdistan rural water & wastewater co (kamyaran), sanandaj, iran mohammad ahmadpour department of environmental health engineering, school of public health, maragheh university of medical science, maragheh, iran aliakbar mohammadi department of environmental health engineering, school of public health, neyshabur university of medical sciences, neyshabur, iran azim alinejad social determinants in health promotion research center, hormozgan university of medical sciences, bandar abbas, iran nezam mirzaei environmental health research center, kurdistan university of medical sciences, sanandaj, iran mansour ghaderpoori students research committee, shahid beheshti university of medical sciences, tehran, iran

background: the purpose of the present study was to assess the efficiency of ultrasound/hydrogen peroxide processes and ultrasound/hydrogen peroxide/zno nanoparticles in the removal of blue cat 41 dye from aqueous solutions. methods: zno nanoparticles were prepared using the hydrothermal method. variables including ph, concentration of zno nanoparticles, initial dye concentration, concentration...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده مهندسی عمران 1391

one of the most commonly used techniques to reduce the corrosion rate of rebar in concrete is addition substances named corrosion inhibitors into the concrete. corrosion inhibitor is chemical compounds that were added to concrete to prevent corrosion of steel in concrete. sodium nitrate is a type of anodic inhibitors that this study investigatesthe effect of this inhibitor on the properties of ...

Journal: :medical journal of islamic republic of iran 0
m shahin from the department of clinical pathology, urmia university of medical sciences, urmia, islamic republic of iran. m rajabi

a range of some iranian monofloral honeys were assayed for antibacterial activity with and without hydrogen peroxide which is inactivated by the addition of catalase. i t was found that the high amount of antibacterial activity in honeys was due to a factor other than hydrogen peroxide. the test microorganism staphylococcus aureus, was not inhibited by the acidity or the osmolarity of the honey...

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