نتایج جستجو برای: methanol and ethanol
تعداد نتایج: 16842321 فیلتر نتایج به سال:
The present work aims to study the effects of working fluids on thermal performance heat pipe with a wick and in horizontal position. experiments were conducted using copper 20.8 mm inner diameter, length evaporator, condenser, adiabatic regions 300 mm, 350 respectively. selected water, Methanol, ethanol, different binary mixtures (50: 50) %, (30: 70) (70: 30) % mixing ratios. filling ratio was...
Background: Histamine is a food-borne chemical hazard which causes scombroid poisoning. The efficiency of histamine recovery from fish is greatly influenced by selection of an appropriate extraction solvent. Hence, in this study the efficiency of different extraction solvents on recovery of histamine from fresh, frozen and canned fish was evaluated. Methods: Fresh, frozen and canned rainbow tr...
Improving the solubility of non-soluble herbal materials is an issue of interest in cell culture based experiments. Evaluating the biological activity of these materials could become possible with the aid of cosolvents/surfactants which obviously should have little or no cytotoxic activity. In the present study, the cytotoxic activity of six cosolvents/surfactants: ethanol, methanol, Tween 20 a...
in this thesis, a better reaction conditions for the synthesis of spirobarbiturates catalyzed by task-specific ionic liquid (2-hydroxy-n-(2-hydroxyethyl)-n,n-dimethylethanaminium formate), calcium hypochlorite ca(ocl)2 or n-bromosuccinimide (nbs) in the presence of water at room temperature by ultrasonic technique is provided. the design and synthesis of spirocycles is a challenging task becaus...
Methanol is responsible for a life-threatening poisoning. Fomepizole, a potent alcohol dehydrogenase inhibitor, is an efficient and safe antidote that prevents or reduces toxic methanol metabolism. Although no study has compared its efficacy with ethanol, fomepizole is recommended as a first-line antidote. Treatment should be started as soon as possible, based on history and initial findings in...
the root of ophiopogon japonicus has been used as a traditional chinese medicine and also a functional food ingredient for a long time in china. in the present study, 17 different homoisoflavonoid compounds were identified in the root extract of o. japonicus by hplc–dad and lcms/ms analyses. the antioxidant activity of the of chloroform/methanol (1:1, v/v), methanol and 70% ethanol extracts, an...
Abstract Due to wide range of secondary metabolites, lichens were used from antiquity as sources colorants, perfumes and medicaments. This research focuses on exploring the antioxidant, antimicrobial cytotoxic activities methanol, ethanol, acetone extracts aqueous infusions corticolous sampled Armenia. Methanol, ethanol all tested active against Gram-positive bacterial strains. The most effecti...
The antibacterial activity of the aqueous, ethanol, methanol and petroleum ether Soxhlet extracts of sundried stem bark of Spathodea campanulata P. Beauv. (Bignoniaceae) was investigated by testing the extracts against B. subtilis, E. coli, P. aeruginosa and S. aureus. The minimum inhibitory concentration (MIC) of the methanol extract was determined against the four bacteria strains and C. albi...
The antibacterial activity of the aqueous, ethanol, methanol and petroleum ether Soxhlet extracts of sundried stem bark of Spathodea campanulata P. Beauv. (Bignoniaceae) was investigated by testing the extracts against B. subtilis, E. coli, P. aeruginosa and S. aureus. The minimum inhibitory concentration (MIC) of the methanol extract was determined against the four bacteria strains and C. albi...
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