نتایج جستجو برای: methanol

تعداد نتایج: 30713  

2008
J. D. Pandian P. F. Goldsmith

Context. Methanol masers at 6.7 GHz have been found exclusively towards high-mass star forming regions. Recently, some Class 0 protostars have been found to display conditions similar to what are found in hot cores that are associated with massive star formation. These hot corino sources have densities, gas temperatures, and methanol abundances that are adequate for exciting strong 6.7 GHz mase...

Amir Rahimirad, Hassan Hassanzadazar, Ali Hamzehzadeh, Danesh Mohammadi, Mohammad Delirrad, Shirin Forouzan, Yaghoub Roshani, Zahra Ghasempour,

ABSTRACT Background: Herbal distillates have been used for many centuries as drinks, flavors, and herbal medicine in Iran, especially in the city of Urmia. Recently, some studies claimed the presence of methanol in different types of herbal distillates. Methanol is a highly toxic compound which can cause acute or chronic toxicity in humans. Acute poisoning with methanol can cause different co...

Journal: :Hemodialysis international. International Symposium on Home Hemodialysis 2002
Charles T Spalding Felicia Briones Antonios H Tzamaloukas

To identify factors associated with the outcome of severe methanol intoxication treated with hemodialysis, we analyzed the clinical course of 7 patients admitted with serum methanol level higher than 50 mg/dL, and therefore requiring hemodialysis. Four patients (group A) had adverse outcomes (1 death, 3 severe neurological deficits and/or blindness) and 3 patients (group B) had no adverse outco...

2012
Hyung-Jin Joo Shin-Ho Ahn Hang-Rae Lee Sung-Woo Jung Chang-Won Choi Min-Seok Kim Moon-Kyoung Bae In-Kyo Chung Soo-Kyoung Bae Hye-Ock Jang Il Yun

The structures of the intact synaptosomal plasma membrane vesicles (SPMVs) isolated from bovine cerebral cortexs, and the outer and the inner monolayer separately, were evaluated with 1,6-diphenyl-1,3,5-hexatriene (DPH) and 1,3-di(1-pyrenyl)propane (Py-3-Py) as fluorescent reporters and trinitrophenyl groups as quenching agents. The methanol increased bulk rotational and lateral mobilities of S...

Journal: :Fungal genetics and biology : FG & B 2012
Bruno V de Oliveira Gleidson S Teixeira Osvaldo Reis Joan G Barau Paulo José P L Teixeira Maria Carolina S do Rio Romênia R Domingues Lyndel W Meinhardt Adriana F Paes Leme Johana Rincones Gonçalo A G Pereira

The hemibiotrophic basidiomycete fungus Moniliophthora perniciosa, the causal agent of Witches' broom disease (WBD) in cacao, is able to grow on methanol as the sole carbon source. In plants, one of the main sources of methanol is the pectin present in the structure of cell walls. Pectin is composed of highly methylesterified chains of galacturonic acid. The hydrolysis between the methyl radica...

Journal: :International archives of occupational and environmental health 1997
S A Batterman A Franzblau

This paper reports on an experimental study of dermal exposure to neat methanol in human volunteers for the purposes of estimating percutaneous absorption rates, permeation kinetics, baseline (pre-exposure) levels of methanol in blood, and inter- and intrasubject variability. A total of 12 volunteers (seven men and five women) were exposed to methanol via one hand for durations of 0 to 16 min i...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2005
Paula V Welander William W Metcalf

In the methanogenic archaeon Methanosarcina barkeri Fusaro, the N5-methyl-tetrahydrosarcinapterin (CH3-H4SPT):coenzyme M (CoM) methyltransferase, encoded by the mtr operon, catalyzes the energy-conserving (sodium-pumping) methyl transfer from CH3-H4SPT to CoM during growth on H2/CO2 or acetate. However, in the disproportionation of C-1 compounds, such as methanol, to methane and carbon dioxide,...

2001
P. J. de Wild

Catalytic production of hydrogen by steam reforming of methanol is an attractive option for use in decentralised production of clean electrical energy from fuel cells. Methanol fuelled solid polymer fuel cell systems are promising candidates for stationary and mobile applications such as passenger cars. Present methanol reformers are usually of the packed bed type which suffer from problems suc...

2011
V. B. Oliveira C. M. Rangel A. M. F. R. Pinto

Passive direct methanol fuel cells (DMFCs) are promising energy sources for portable electronic devices. Different from DMFCs with active fuel feeding systems, passive DMFCs with nearly stagnant fuel and air tend to bear comparatively less power densities. A steady state, one-dimensional, multi-component and thermal model is described and applied to simulate the operation of a passive direct me...

Journal: :The journal of physical chemistry. A 2009
Yongjun Hu Elliot R Bernstein

Aniline-methanol mixed clusters are ionized by single photon vacuum ultraviolet (VUV, 118 nm) radiation with which absorption to an excited intermediate S(1) state is not required. Aniline ion (An(+)), a series of (An)(n)(+)-(CH(3)OH)(m) (n = 1, 2) cluster ions, and their hydrogenated cluster ions, (An)(n)(+)-(CH(3)OH)(m)H (n = 1, 2) are observed by mass spectrometry. Infrared (IR) absorption s...

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