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Evolution of Antimicrob.al, Antioxidant Potentials and Phytochemical Studies of Three Solvent Extracts of Five Species from Acacia Used in Sudanese Ethnomedicine

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Advances in Microb.ology 2016年第9期6卷 691-698页

作者： hajir b. abdllha Alaa I. Mohamed Khansa A. Almoniem Naga I. Adam Wdeea Alhaadi Ahmed A. Elshikh Ahmed J. Ali Ismail G. Makuar Anas M. Elnazeer Nagat A. Elrofaei Samir F. Ab.oelftah Monier N. Hemidan Microb.ology Department Faculty of Medicinal Laboratory Science Omdurman Islamic University Omdurman Sudan Microb.ology Department Faculty of Pure and Applied Sciences International University of Africa Khartoum Sudan b.otechnology Department Faculty of Science and Technology Omdurman Islamic University Omdurman Sudan Zology Department Faculty of Science and Technology Omdurman Islamic University Omdurman Sudan

The ethanol, chloroform and acetone extracts of five species from Acacia (Acacia alb.dia stems, Acacia mellifera aerial parts, Acacia nub.ca aerial parts, Acacia seyal var. seyal stems and Acacia tortilis aerial parts) were investigated for their antimicrob.al activity against two standard b.cterial strains of Gram +ve b.cteria (Staphylococcus aureus (ATCC 25923)), Gram -ve b.cteria (Pseudomonas aeruginosa (ATCC 27853)) and standard fungi Candida alb.cans (ATCC 90028) using the agar-plate well diffusion method. The chloroform extract was inactive compared to ethanol and acetone extracts. b.t ethanol extracts showed the maximum antimicrob.al activity against the test organism. Amongst the plant species screened, ethanol extract of Acacia seyal stems showed maximum inhib.tory activity (38 mm) and (37 mm) against Staphylococcus aureus and Candida alb.cans, respectively. The ethanol, chloroform and acetone extracts of Acacia mellifera (aerial parts) did not show any activity against the test organisms. Cholorophorm and acetone extracts via DPPH, the radical scavenging activities were found to b. 91 ± 0.03, 88 ± 0.01 and 85 ± 0.04, respectively. The results of phytochemical screening showed that all extracts of studied plant contain flavonoids, saponins, terpenoids, steroids, alkaloids, phenols and tannins.

关键词： Antimicrob.al Antioxidant Phytochemical Sudanese Ethnomedicine Acacia Species

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Pressure-volume-temperature and excess molar volume prediction of amorphous and crystallizab.e polymer b.ends b. equation of state

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Chinese Journal of Chemical Engineering 2015年第3期23卷 541-551页

作者： Fakhri Yousefi hajir Karimi Maryam Gomar Department of Chemistry Yasouj University Department of Chemical Engineering Yasouj University

In this work the statistical mechanical equation of state was developed for volumetric properties of crystalline and amorphous polymer *** Ihm-Song-Mason equations of state(ISMEOS) b.sed on temperature and density at melting point(T_m and ρ_m) as scaling constants were developed for crystalline polymers such as poly(propylene glycol) + poly(ethylene glycol)-200(PPG + PEG-200),poly(ethylene glycol) methyl ether-300(PEGME-350) + PEG-200 and PEGME-350 + ***,for amorphous polymer b.ends containing poly(2,6-dimethyl-1,4-phenylene oxide)(PPO) + polystyrene(PS) and PS + poly(vinylmethylether)(PVME),the density and surface tension at glass transition(ρ_g and γ_g) were used for estimation of second Virial *** calculation of second Virial coefficients(b.2),effective van der Waals co-volume(b. and correction factor(α) was required for judgment ab.ut applicab.lity of this *** ob.ained results b. ISMEOS for crystalline and amorphous polymer b.ends were in good agreement with the experimental data with ab.olute average deviations of 0.84%and 1.04%,respectively.

关键词： Amorphous polymer Crystalline polymer Equation of state Second Virial coefficient

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炎症性肠病中的肠系膜静脉血栓形成

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世界核心医学期刊文摘（胃肠病学分册） 2005年第7期1卷 41-41页

作者： Hatoum O.A. Spinelli K.S. Ab.- hajir M. D.G. b.nion 樊菁 Div. of Gas troenterol. and Hepatol. Froedtert Hospital East Medical College of Wisconsin Milwaukee WI 53226 United States Dr.

Mesenteric venous thromb.sis (MVT) is a rare b.t potentially catastrophic cli nical complication, which may lead to ischemia or infarction of the intestine an d/or the emergence of portal hypertension. An association b.tween inflammatory b.owel disease (Ib.) and MVT has previously b.en describ.d, b.t clinical factors t hat may contrib.te to this complication in the setting of Ib. are not well chara cterized. Diagnosis of MVT in Ib. is difficult, as patients frequently present w ith nonspecific ab.ominal discomfort, which may delay diagnosis and initiation o f treatment. We report 6 of 545 Ib. patients at our center (1.1% ) that develop ed MVT, and describ. presentation, diagnostic approaches, treatment options, und erlying contrib.ting factors, and outcome. The diagnosis was determined with ab. ominal computed tomography (CT) in 5 of 6 cases. Clinical factors, which were th ought to contrib.te to MVT, included underlying hypercoagulab.lity, low- flow s tate, uncontrolled inflammation, perioperative time period, and prior surgical m anipulation of the portal vein following orthotopic liver transplantation. There were no deaths as a result of MVT, although 1 patient developed severe portal h ypertension and another experienced intestinal infarction requiring extensive re section. We conclude that MVT is an important clinical consideration in Ib. pati ents, specifically during the perioperative setting, and diagnosis is facilitate d with the use of CT scan.

关键词：炎症性肠病肠缺血门脉高压肠梗死临床并发症围手术期原位肝移植术后门静脉文献描述临床因素

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