نتایج جستجو برای: liquid phase reduction method

تعداد نتایج: 2680545  

Journal: :nutrition and food sciences research 0
zohreh taghvaee isiri, karaj, iran zahra piravivanak isiri, karaj, iran keramatollah rezaee university of tehran, karaj 31587-77871, iran mohammad faraji isiri, karaj, iran sara nanvazadeh isiri, karaj, iran

background and objectives: a method was developed and validated for determining 15 polycyclic aromatic hydrocarbons (pahs) in refined olive and refined pomace olive oils using high performance liquid chromatography coupled with a fluorescence detector. materials and methods: the sample preparation involved liquid–liquid extraction with organic solvent and low temperature clean-up. the low tempe...

M. H. Rahimian and M. Farshchi,

The internal flow circulation dynamics of a liquid drop moving in a co- or counter-flowing gas stream has been numerically studied. The present work is concerned with the time accurate numerical solution of the two phase flow field at the low Mach number limit with an appropriate volume tracking method to capture motion and deformation of a liquid drop. It is shown that relative velocity betwee...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تهران - دانشکده علوم 1370

تهیه ترکیب فسفرتری کلرید بااستفاده از واکنش فسفر سفید(زرد) و گاز کلر در فاز محلول و درمقیاس آزمایشگاهی موردمطالعه قرارگرفت .پس از انتخاب مناسبتر روش و انتخاب بهترین شرایط کوشش درجهت طراحی واحد نیمه صنعتی انجام شد و توانستیم دراین راستا به تولید 10 کیلوگرم درساعت باخلوص 99/5 درصد برسیم . abstract the preparation of phosphorous trichloride by the reaction of white phosphorous and chlorine gas in ...

Journal: :Journal of chromatography. B, Analytical technologies in the biomedical and life sciences 2015
Mehrnoush Amid Yazid Manap Farhana Azmira Muhaini Hussin Zaidul Islam Sarker

Polygalacturonase is one of the important enzymes used in various industries such as food, detergent, pharmaceutical, textile, pulp and paper. A novel liquid/liquid extraction process composed of surfactant and acetonitrile was employed for the first time to purify polygalacturonase from Durio zibethinus. The influences of different parameters such as type and concentration of surfactants, conc...

2013
Chiara Genovese Claudio Ampelli Siglinda Perathoner Gabriele Centi

We report on the development of a novel electrochemical reactor working in gas phase for recycling CO2 back to liquid fuels. Operating in gas phase (without any solvent) has many benefits with respect to the conventional aqueous slurry reactors: no problems of CO2 solubility, easy and less costly recovery of the products, etc. The reaction mechanism of CO2 reduction is also quite different in g...

Journal: :مهندسی برق و الکترونیک ایران 0
e. babaei s. h. hosseini g. b. gharehpetian

in this paper, a new topology is proposed for three-phase to single-phase matrix converters, where more voltage levels are produced in the output in comparison with the conventional topologies. in addition, a new control method based on minimum error between the generated and the desired output voltages is proposed for three-phase to single-phase matrix converters. in the proposed control metho...

F Naghibi M Mosaddegh N Nader S Esmaeili

A high performance liquid chromatography method was studied for determination of 18 ?-glycyrrhetinic acid in Glycyrrhiza glabra L. (licorice) extract. The operating condition were C-18 reversed phase column (VP-ODS, (250×4.6 mm, 5 mm)) at room temperature, acetonitril/phosphoric acid (3/1) as mobile phase, at flow rate of 0.6ml/min (0-8min), 0.4ml/min (8-20min) and UV detection at 230 nm. The...

Journal: :IEEJ Transactions on Fundamentals and Materials 1996

Journal: :Nonlinear Theory and Its Applications, IEICE 2016

A Shafiee M Amini M Khanavi

A rapid, simple and sensitive high-performance liquid chromatography method was developed for determination of ciprofloxacin in plasma by means of ultraviolet detection. Ofloxacin was used as an internal standard and separation carried on a Novapak C18 column using a mobile phase of 0.01 M phosphate buffer (pH =2.6): methanol (82: 18 v/v). Extraction of drug was performed from plasma by liquid-...

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