نتایج جستجو برای: methanol concentration

تعداد نتایج: 407058  

2011
Sadiq Azam Shumaila Bashir Bashir Ahmad

BACKGROUND Myrsine africana is an herbaceous plant that is traditionally used as appetizer and carminative. Locally, it is used for the treatment of pulmonary tuberculosis, rheumatism and diarrhea by healers. The aims of the current study were to screen the crude methanol extract obtained from the aerial parts (leaves and stem) of M. africana, for antispasmodic actions on isolated tissues and f...

2009
Robert Hodyss Christopher D. Parkinson Paul V. Johnson Julie V. Stern Jay D. Goguen Yuk L. Yung Isik Kanik

[1] Near infrared spectra of the surface of Enceladus returned by Cassini show the presence of an absorption feature at 3.53 mm, ascribed by Brown et al. (2006) to ‘‘short chain organics,’’ and by Newman et al. (2007) to hydrogen peroxide. We assign this feature tentatively to methanol. Variations in the peak position of the feature suggest that methanol in the ‘‘tiger stripes’’ region may be s...

2017
Prabhakarn Arunachalam Maged N. Shaddad Abdullah Salah Alamoudi Mohamed A. Ghanem Abdullah M. Al-Mayouf Giancarlo Cravotto

Low-cost and high-performance advanced electrocatalysts for direct methanol fuel cells are of key significance for the improvement of environmentally-pleasant energy technologies. Herein, we report the facile synthesis of cobalt phosphate (Co3(PO4)2) nanospheres by a microwave-assisted process and utilized as an electrocatalyst for methanol oxidation. The phase formation, morphological surface ...

2017
Mikio Marumo Ichiro Wakabayashi

BACKGROUND Although ethanol is known to inhibit platelet aggregation, the effects of another variant of alcohol, methanol, have not been reported. The purpose of this study was to determine whether methanol and its metabolite, formic acid, affect Ca2+ entry into and subsequent aggregation of platelets in vitro. METHODS Ca2+ entry into and aggregation of human platelets were measured by spectr...

پایان نامه :0 1371

در پروژه حاضر داده های تعادلی فشار بخار برحسب کسر مولی مایع برای سیستم های methanol()methyl tert - buthyl ether/ در درجه حرارت های 25،35،45درجه سانتیگراد و سیستم) diisopropyl ether/methanol(در دمای 30 درجه سانتیگراد اندازه گیری شده است . برای اندازه گیری از دستگاهی شبیه به دستگاه gibbs vanness که به روش استاتیکی کار می کند استفاده شده است . تمام سیستمهای اندازه گیری شده انحراف مثبت از قانون رائ...

Journal: :journal of physical & theoretical chemistry 2015
m. aghaie s. moradian

in this study, the ion association phenomenon in the saturated solution of kcl in the mixed solvent(methanol+water) was studied. the solubility of this compound in the mixed solvent (methanol+water by value percent of methanol = 60%), and in the presence of various molarities of nano3 wasdetermined by the solvent evaporation method at 25.0°c. the results enable us to estimate the valueof thermo...

2017
RK Meena Bhupender Dutt KR Sharma JN Sharma

The present studies were conducted on effect of plant extracts on Trametes versicolor (White rot) fungal colonization and inhibition of treated and untreated wood of Pinus roxburghii Sargent. The data on colonization and fungal inhibition were noticed significant variation. Among the concentrations, maximum value for fungal colonization treated wood samples with extract was noticed in the (100%...

2017
Apurba Kumar Barman Gazi Md. Monjur Murshid Md. Saifuzzaman Kamanashis Mahaldar Mirza Bojić Nripendra Nath Biswas

The objectives of this study was to evaluate the possible in vitro antioxidant potential and analysis of the active polyphenols in ethyl acetate and methanol extracts of leaves of Leonurus sibiricus L. Alcoholic extraction of Leonurus sibiricus leaf was carried out in two different solvents (ethyl acetate and methanol) on the basis of their different polarity. The in vitro antioxidant efficacy ...

Background and Objective: Salmonella infections, or salmonellosis such as typhoid, bacteremia, enterocolitis are the major health problem worldwide, especially in developing countries including Iran. This study aimed to evaluate the antibacterial effect of methanol and aqueous extracts of Vaccinium arctostaphylos fruit against Salmonella spp. Materials and Methods: The present stud...

2015
Buniyamin Adesina Ayinde Josephine Omose Ofeimun Muhammad Kashif Ahsana Dar Farooq Muhammad Iqbal Choudhary

Based on ethnomedicinal applications in treating tumour related ailments, effects of the methanol extracts of Brachystegia eurycoma (leaf and stem bark), Parquetina nigrescens and Struchium sparganophora (leaves) were evaluated on lung cancer cells at concentrations of 1-250 μg/ml. Hexane, dichloromethane and aqueous fractions of P. nigrescens were tested on the cells at concentrations of 1-100...

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