نتایج جستجو برای: methanol concentration

تعداد نتایج: 407058  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - پژوهشکده فنی و مهندسی 1388

asymmetric polyethersulfone (pes) microfiltration flat sheet membranes were composed by the phase inversion method (pim) and were used as supports. composite membranes were fabricated by coating silicone rubber as selective layer. effect of different concentrations of pes and pdms and different solvent such as nmp, dmf and dms effects as pes solvents and support thickness and different coagulat...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه اراک - دانشکده علوم 1392

the history of plant’s used for mankind is as old as the start of humankind. initially, people used plants for their nutritional proposes but after the discovery of medicinal properties, this natural ?ora became a useful source of disease cure and health improvement across various human communities. berberis vulgaris is one of the medicinal plants used in iranian traditional medicine. berberis ...

Journal: :iranian journal of basic medical sciences 0
seyed reza mousavi medical toxicology research center, mashhad university of medical sciences, mashhad, iran mohssen namaei-ghassemi medical toxicology research center, mashhad university of medical sciences, mashhad, iran massomeh layegh medical toxicology research center, mashhad university of medical sciences, mashhad, iran monavar afzalaghaee medical toxicology research center, mashhad university of medical sciences, mashhad, iran manssoreh vafaee medical toxicology research center, mashhad university of medical sciences, mashhad, iran gholamali zare medical toxicology research center, mashhad university of medical sciences, mashhad, iran

objective(s) herbal waters are extensively used in most parts of iran including mashhad. visiting a patient with total blindness due to daily ingestion of around 200 ml of herbal water (plant forty water) per day for six months was the rational for methanol determination in all herbal waters available in mashhad markets. materials and methods a total of two hundred and nineteen bottles of herba...

Journal: :asia pacific journal of medical toxicology 0
shahin shadnia excellent center of clinical toxicology, toxicological research center, clinical toxicology department, school of medicine, shahid beheshti university of medical sciences, tehran, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی شهید بهشتی (shahid beheshti university of medical sciences) kambiz soltaninejad legal medicine research center, legal medicine organization, tehran, iran

background: acute methanol poisoning is one of the most important chemical poisoning due to drinking of illegal and handmade alcoholic beverages in iran. the aim of this study was to evaluate clinical and biochemical parameters as prognostic factor in acute methanol poisoning. methods: a retrospective study was performed on acute methanol poisoning cases admitted to the loghman hakim hospital p...

Journal: :international journal of advanced design and manufacturing technology 0
ebrahim alizadeh kourosh sedighi mousa farhadi mohsen shakeri

effect of methanol concentration and channel depth of bipolar plates on the performance of single direct methanol fuel cell was investigated experimentally. the membrane used in this experiment was nafion117. dimension of the single cell were 10cm 10 cm. methanol concentrations of 0.50, 1.0, 1.5, 2.0, 3.0 molar were used. channel depth of the bipolar plates were chosen to be 1.0, 1.5, 2.0 mm, a...

2006
Hengbing Zhao Jun Shen Jiujun Zhang Haijiang Wang David P. Wilkinson Caikang Elton Gu

Liquid-fed direct methanol fuel cells (DMFCs) are one of the most promising candidates for portable power electronics and automotive pplications due to their potentially high-energy density, simple storage, and distribution of the fuel. The concentration of methanol in the fuel irculation loop of a DMFC system is an important operating parameter, because it determines the electrical performance...

2012
Kyongsoo Lee Seong-Il Kim Byeong-Kwon Ju

An aqueous methanol sensor for use in direct methanol fuel cells (DMFCs) applications is demonstrated; the methanol sensor is built using dispersed single-walled carbon nanotubes (SWCNTs) with Nafion117 solution to detect the methanol concentration in water. The study is aimed at the potential use of the carbon nanotubes array as a methanol sensor for direct methanol fuel cells (DMFCs). The con...

Journal: :Biotechnology and bioengineering 2000
W Zhang M A Bevins B A Plantz L A Smith M M Meagher

An unstructured growth model for the recombinant methylotrophic yeast P. pastoris Mut(+) expressing the heavy-chain fragment C of botulinum neurotoxin serotype A [BoNT/A(H(c))], was successfully established in quasi-steady state fed-batch fermentations with varying cell densities. The model describes the relationships between specific growth rate and methanol concentration, and the relationship...

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