نتایج جستجو برای: Sodium bromated

تعداد نتایج: 187576  

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2000
ahmad shaabani hamid reza safaei ayoob bazgir

nabro3 combined with nh4cl is found to be an efficient reagent for the transformation of sulfides into sulfoxides in aqueous and under mild conditions.

Ahmad Shaabani, Ayoob Bazgir, Hamid Reza Safaei

NaBrO3 combined with NH4Cl is found to be an efficient reagent for the transformation of sulfides into sulfoxides in aqueous and under mild conditions.

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 ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان 1390

یک سری پنج تایی لیگاند چهار دندانه سولفور دهنده: en-bis-dtcna = ethylenebisdithiocarbamate sodium salt pn-bis-dtcna = propylenebisdithiocarbamate sodium salt bu-bis-dtcna = butylenebisdithiocarbamate sodium salt he-bis-dtcna = hexylenebisdithiocarbamate sodium salt oc-bis-dtcna = octylenebisdithiocarbamate sodium salt تهیه شده است. این لیگاندها به روش های ir ,1h-nmr و تجزیه عنصری شن...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 1994
ali asghar ensafi javad tajebakhsh-e-ardakany

a kinetic spectrophotometric method for rapid measurement of thiocyanate in serum, urine and sewage water with no need for removed of interfering substances in described. the method is based on the inhibitory effect of thiocyanate on the oxidation of pyrogallol red by bromated and nitrite which is monitored at 467 nm. the variables affecting the rate of the reaction were investigated and the op...

2013
ASHISH KUMAR

Kinetic investigation in Ru(III) catalyzed oxidation of D(+)-galactose and lactose in an alkaline solution of potassium bromate in the presence of mercuric acetate as a scavenger for Br – ion has been carried out in the temperature range 30-45°C. The rate shows first order dependence with respect to the bromate and zeroth order with respect to the substrate (sugars). The reaction exhibits first...

M. R. Froudi Jahromi R. Pour Gholam S. Bagheri S. Zandifar

A new kinetic spectrophotometic method for the determination of trace amount manganese(II) in Tea real samples has been described based on it s the catalytic effect on the oxidations of 1 - (2 – Pyridyl Azo) - 2 - Naphthol, (PAN), by potassium bromated in sulfuric acid. The reaction is followed spectrophotometrically by measuring the decrease in the absorbance at 547.5 nm. Under the optimum con...

Journal: :jundishapur journal of natural pharmaceutical products 0
maryam kouchak nanotechnology research center, ahvaz jundishapur university of medical sciences, ahvaz, ir iran; department of pharmaceutics, faculty of pharmacy, ahvaz jundishapur university of medical sciences, ahvaz, ir iran; nanotechnology research center, ahvaz jundishapur university of medical sciences, ahvaz, ir iran. tel: +98-9163130204 armita azarpanah department of pharmaceutics, faculty of pharmacy, ahvaz jundishapur university of medical sciences, ahvaz, ir iran

conclusions diclofenac-loaded nanoparticles based on properties of chitosan gelation could delay the release of drugs in the stomach and be further evaluated for the enteric delivery of diclofenac. objectives the aim of this study was to prepare and evaluate diclofenac-loaded chitosan nanoparticles based on the ionotropic gelation method. materials and methods chitosan (cs) nanoparticles contai...

2013
DIETER M. KRAMSCH

out in this study, although no direct effects of La3+ on tissue metabolism have as yet been reported. This work was presented in part at the 31st Annual Meeting of the Council on Arteriosclerosis of the American Heart Association, Miami Beach, Fla., November 1977. Circulation. 56(Suppl. III): 145. Receivedfor publication 26 March 1979 and in revisedform 6 December 1979. INTRODUCTION As recently...

Journal: :journal of physical and theoretical chemistry 0
mohamad reza froudi jahromi chemistry department, dashtestan branch, islamic azad university, dashtestan, iran samira zandifar chemistry department, dashtestan branch, islamic azad university, dashtestan, iran ehsan pakdaman chemistry department, islamic azad university, kangan branch, kangan, iran fatemeh tavakoli chemistry department, islamic azad university, kangan branch, kangan, iran saideh bagheri young researchers and elite club, shiraz branch, islamic azad university, shiraz, iran

a new kinetic spectrophotometic method for the determination of trace amount chromium (iii) in teareal samples has been described based on it s the catalytic effect on the oxidations of 1 - ( 2 –pyridylazo ) - 2 - naphthol, (pan), by potassium bromated in sulfuric acid. the reaction is followedspec- trophotometrically by measuring the decrease in the absorbance at 469 nm. under the optimumcondi...

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