نتایج جستجو برای: nitric acid

تعداد نتایج: 807631  

Journal: :international journal of nanoscience and nanotechnology 2015
f. pourfayaz s. iranpour o. shojaei

toluene and benzene were eliminated using multi-walled carbon nanotubes (mwcnts). in order to investigate influence of acid treatment on the mwcnts adsorption capacities, the mwcnts were functionalized by nitric acid (10 m) under reflux conditions for 2 h. fourier transform infrared (ftir) and raman spectroscopy were employed to confirm the formation of functional groups on the nanotubes surfac...

2001
Lara I. Halaoui Hossein Sharifian Allen J. Bard

The scanning electrochemical microscope ~SECM! was used to study the electrochemical reduction of nitric acid to hydroxylamine at modified glassy carbon ~GC! electrodes. The GC surface was modified by holding it at a negative potential in solutions of p-aminophenol, or p-phenylenediamine in 1.0 M nitric acid. The generated products were detected in generation/collection experiments with an SECM...

Journal: :The Journal of the Japan Institute of Metals 1942

Journal: :Pakistan journal of pharmaceutical sciences 2013
Syed Muhammad Shahid Muhammad Jawed Tabassum Mahboob

This study was designed to study the relationship between serum nitric oxide and sialic acid in patients of diabetic nephropathy. Total 210 diabetic patients including 115 males and 95 females, suffering from diabetes and nephropathy (DN) were selected followed by informed consent and approval from institutional ethical committee. Equal number of age and sex matched normal healthy subjects were...

Journal: :The Journal of biological chemistry 1981
M P Doyle R A Pickering T M DeWeert J W Hoekstra D Pater

The reactions of human hemoglobin with sodium nitrite and ethyl nitrite in deoxygenated media have been examined in kinetic detail. Nitrous acid has been identified from kinetic pH dependence studies as the principal oxidant of hemoglobin in reactions with sodium nitrite. Nitrosylhemoglobin is produced concurrently with methemoglobin as a result of reductive release of nitric oxide from nitrous...

2015
Erna Astuti

Biodiesel production from vegetable oil will produce glycerol as by-product about 10% of the biodiesel production. The amount of glycerol that was produced needed alternative way to handling immediately so as to not become the waste that polluted environment. One of the solutions was to process glycerol to polyglycidyl nitrate (PGN). PGN is synthesized from glycerol by three-step reactions i.e....

2011
Chitturi Venkateswara Rao Lingam Hima Kumar Balasubramanian Viswanathan

Iron and nitrogen containing carbon catalysts were prepared by the pyrolysis of iron(III)tetramethoxyphenylporphyrin complex adsorbed on as-received as well as nitric acid treated carbon black and employed them as oxygen reduction electrodes for hydrogen-oxygen PEM fuel cells. The influence of carbon surface functional groups on the dispersion of active species and electrocatalytic performance ...

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2006
Hiroki Sakurai Junji Noro Akira Kawase Masanori Fujinami Koichi Oguma

A rapid sample-digestion method for the determination of toxic metals, cadmium, chromium, and lead, in polyethylene and polyvinyl chloride has been developed by using a microwave oven for household use. An appropriate amount of the sample taken in a PTFE decomposition vessel was mixed with nitric acid or nitric and sulfuric acids. The vessel was heated in a microwave oven by a predetermined ope...

Journal: :The Journal of the Society of Chemical Industry, Japan 1950

Journal: :Brazilian journal of otorhinolaryngology 2007
Fernando P Gaspar-Sobrinho Francisco S Nascimento Sampaio Hélio A Lessa

A 33 year old woman dropped in her nose a product based on nitric oxide, known as “strong water” and professionally used by her husband. The bottle with the acid was mistaken for the bottle of a topical nasal decongestant. She complained of intense pain, burning sensation, nasal obstruction and tearing. Rhinoscopy showed a burn on the nasal wing and on the nasal vestibule, of yellowish color, s...

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