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The multiplicity of particle production from hadron-hadron and nucleus-nucleus interaction

Natural Science 2010年第4期2卷 388-397页

作者： Ahmed Abdo Ahmed Al-Haydari mohmmed tarek hussein 不详

The particle production in hadron-nucleon (h-N), hadron-nucleus (h-A) and nucleus-nucleus (A-A) collisions at high energies are studied in view of the multi-peripheral model. A multi-peripheral T-matrix element is assumed with multi surface parameter that is functionally dependent on the number of particles in the final state and control the kinematical path of the reaction. A Monte Carlo code is designed to simulate events ac-cording to a hypothetical model, the quark structure of the interacting nucleons is consid-ered. The number of possible nucleon collisions inside the target nucleus plays an important role in folding the (h-N) to generate the (h-A) and (A-A) collisions. The predictions of the model give reasonable agreement with the recently examined experimental data.

关键词： Monte-Carlo Generators Multiplicity Distribution Integral Phase Space

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Study of Phytochemical Screening and Antimicrobial Activity of Citrus aurantifolia Seed Extracts

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American Journal of Analytical Chemistry 2016年第3期7卷 254-259页

作者： Rehab Mobark Osman Mohammed Saad mohmmed hussein Ayoub Department of Pharmacognosy Faculty of Pharmacy University of Al-Neelain Khartoum Sudan

Citrus aurantifolia, the family Rutaceae, which consists of 150 genera and 900 species, is gaining grounds as important source for treatment in complementary medicine, and commonly called limone. Chloroform, methanol and ethanol extract exhibited significant antimicrobial activity and highlighted the biological monitoring of activity from the methanol extract of seeds. Phytochemical screening of the diethyl ether, methanol and aqueous extracts of seeds confirmed the presence of alkaloids, saponins, sterols and triterpenes, carotenoids, coumarins, tannins and carbohydrates. Chloroform extract was fractionated by sing liquid solid column chromatographic technique and column fractions eluted with chloroform and methanol. The antibacterial secondary metabolites were achieved by fractionation of the active. The seed extracts were monitored analytically by TLC preparative and some chemical analyses of seeds have been done such as determination of ash, nitrogen, protein content.

关键词： C. aurantifolia Antimicrobial Activity Limone Phytochemical Screening Liquid Solid Column Chromatographic

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