نتایج جستجو برای: methanol and ethanol
تعداد نتایج: 16842321 فیلتر نتایج به سال:
The metabolic fate of C-methanol and l-C-ethanol in the adult larva of Prodenia litura has been investigated in vivo. Following the intersegmental injection of C-methanol (1.2 mg/g. insect), about 70% of the radioactivity was recovered as C02 in the expired air, after 20 hours. Also, about one fourth of the administered dose was recovered as unchanged methanol, during the first six hours. Only ...
We report a case of methanol intoxication, which was not distinguished from ethylene glycol intoxication during treatment. A 65-year-old man was transferred to our emergency department because of drowsiness and remarkable metabolic acidosis. He was intubated because his consciousness disturbance worsened. The diagnosis was suspected as methanol or ethylene glycol intoxication in addition to eth...
Hydrogen binding energies are calculated for the different isomers of 1:1 complexes of methanol, ethanol and water using ab initio methods from MP2 to CCSD(T). Zero-point energy vibration and counterpoise corrections are considered and electron correlation effects are analyzed. In methanol–water and ethanol–water the most stable heterodimer is the one where the water plays the role of proton do...
Numerous methods are being used to identify and quantify methanol and ethanol in alcoholic beverages, including country liquors. Some of the known methods are density and refractive index measurements, and spectrophotometric measurements using Schiff's reagent or chromatropic acid. Other advanced techniques involve head space gas chromatography (GC), GC-flame ionization detection, high-performa...
A Comparison of Methanol and Ethanol Effects on the Activity and Distribution of Lysosomal Proteases
The activity of lysosomal proteolytic enzymes (cathepsin A, B, C, D and E) in cytosol, in the liver homogenate, and in the blood plasma of rats intoxicated with methanol and ethanol was measured 6, 12 and 24 h; and 2, 5, and 7 days after intoxication. The activity of all proteases was increased in the cytosol from 12h to 5 days of alcohol intoxication, whereas the activity of these enzymes was ...
Leafs have contain wide antioxidant range which may provide prevention against radical oxygen species. The aim of this work was to measure the antioxidant capacity of 15 commercially available leaf extracts (ethanol, methanol, water) using ferric reducing antioxidant power (FRAP) assay and trolox equivalent antioxidant capacity (TEAC) assay. Also we evaluated total phenolic and monomeric anthoc...
The effectiveness of three selected carbon sources (sucrose, ethanol and methanol) on submerged filters for the removal of nitrate from contaminated groundwater (100mg NO3(-)/litre), was studied. Process yields, nitrite accumulation, biomass production and growth of denitrifying bacteria were compared. Process yields, represented as ratio C/N were 2.5, 1.08 and 1.1 for sucrose, ethanol and meth...
Adsorption of methanol and ethanol over mesoporous siliceous material are studied in the current paper. The pure mesoporous silica is prepared using tetraethylorthosilicate (TEOS) as silica source and dodecylamine as template at low pH. The prepared material was characterized using nitrogen adsorption,nX-ray diffraction (XRD) and scanning electron microscopy (SEM). The adsorption kinetics of me...
Background: Public health burden from hazardous and harmful use of alcohol warrants drastic action throughout the world. Although less alcohol related harm is anticipated in Islamic countries, unrecorded alcohol remains a considerable concern which needs intelligent and realistic policy options. Methods: In a descriptive study, records of chemically analyzed samples of alcohol obtained from Ma...
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