College of Science: Recent submissions

Now showing items 1321-1340 of 1856

Effect of Some Natural Products on Reduction of Aflatoxin Contamination in Peanut

Mohamed, Kamal Elhadi (Sudan University of Science and Technology, 2013-02-01)

Many agriculture commodities and food – in particular peanut and its products – are vulnerable to a ttack by a g roup of fungi at diff erent stages o f handling and processing. Among various mycotoxins, aflatoxins have ...
Investigation of the Major Flavonoid of Mitracarpus hirtus

Salih, Rasha Abd Alazeem Mohammed (Sudan University of Science and Technology, 2013-04-01)

Phytochemical screening of the alcoholic extract of the Mitracarpus hirtus indicated the presence of flavonoids, alkaloids and glycosides. Steroids were not detected. It was decided to investigate the flavonoids of this ...
Free Holomorphic and Maximal Functions on the Unit Ball with Growth Coverings of Strongly Pseudoconvex manifolds

Idriss, Younous Atim (Sudan University of Science and Technology, 2013-01-01)

Multi-analytic operators on Fock spaces are considered. We show the Functional calculus and interpolation of noncommutative operators and transformations. We study the modeling theory for commuting and noncommuting contractive ...
Optical and Electrical Characterization and Performance of Roselle and Helba Dyes Using Sensitized Nanosolar Cells

Fadol, Asim Ahmed Mohammed (Sudan University of Science and Technology, 2013-07-01)

Solar cells represent now a dream of physicists and people to solve the energy problem. Silicon solar cells which are now a day widely used suffer from noticeable problems, like high cost and complex fabrication. There ...
Stability Study of Doxycycline Hyclate and Validation of its UV. Spectrophotometeric Quantification Method

Osman, Moawia Babikir Ahmed (Sudan University of Science and Technology, 2013-07-01)

Stability assessment of samples of doxycyline hyclate ( raw material / finished products) was carried out through stability testing protocols , which define clearly temperature, humidity , storage time , and suitable ...
Cubic Spline Interpolant for Approximating Solutions of Linear Differential Equations

Abdalla, Raja Elnour Ali (Sudan University of Science and Technology, 2012-01-01)

We have studied in this thesis a class of numerical methods for interpolating and solving linear differential equations. The method based on the temporal semi-discretization by implicit Euler finite difference method and ...
Theoretical & Experimental Results of Higgs Boson and the effect of Einstein Generalized Lagrangian on it

Abeid Allah, Zooalnoon Ahmed (Sudan University of Science and Technology, 2013-05-01)

In this thesis the standard model of particle physics and the Higgs boson is discussed. It also contains information about CERN, the particle accelerator LHC and the ATLAS, CMS detectors, all used in the search for the ...
Synthesis of some Nitrogen Containing Five- and Six- membered Heterocyclic Ring Derivatives

Adam, Abu Baker Mohammed Osman (Sudan University of Science and Technology, 2013-04-01)

In the present study synthesis of several chalcones and their cyclization reactions with some reagents (thiourea and thiosemicarbazide) was dealt with, some heterocyclic aromatic and non aromatic compounds (pyrimidines, ...
Semigroups of nonlinear mappings with extreme amenability and Homology for graphs and twisted C*- Algebras

Mahmod, Huda Uones Mohamd Ahamd (Sudan University of Science and Technology, 2013-01-01)

We show the variational principles for topological entropies of subsets of a metric space. We established some fixed point properties for semigroups of nonlinear mappings and the extreme amenability of abelian topological ...
Beyond One Gluon Exchange In The Infrared Limit Of Yong Mills Theory

Yousif, Alssadig Abdalltif Mohammed (Sudan University of Science and Technology, 2013-01-01)

We analyze the Wilson loop for a pure Yang-Mills theory, using adecoupling solution in close agreement with lattice computations. At one-gluon exchange level it is seen that the potential cannot yield a linear rising ...
Study of Electronic Properties of Calcium Chloride Using the First-Principles

Hammad, Ibrahim Adam Ibrahim (Sudan University of Science and Technology, 2013-06-01)

In this research we used the first-principles calculations to study the electronic structure of the face center cubic (FCC) calcium chloride (CaCl2); using psedopotintial approach (as implemented by the QANTUM ESPRESSO ...
Reflection and Transmission of Electromagnetic Waves by a Layered Structure Containing Left-Handed Material

Ubeid, Muin F. (Sudan University of Science and Technology, 2013-08-01)

Left-handed materials (LHMs) are artificial materials whose electric permittivity and magnetic permeability are both negative and consequently have negative index of refraction. Such materials, first studied theoretically ...
Numerical Solution for One- Dimensional Differential Equation Using the Finite Element Method

Adam, Nada Adam Musa (Sudan University of Science and Technology, 2013-01-01)

The finite element method is presented in this thesis, and we applied it for obtaining the approximate solution to the two points boundary value problem. This method uses the Galerkin method and the variational (weak) ...
On Curves Counting In Negative curvature

Mohamed, Omer Mohamed Omer (Sudan University of Science and Technology, 2013-01-01)

Weconsder a complete rimannian manifold M with negative curvature ,and two properly immersed convex sudsets and of M ,then we discuss the asymptotic behavior of the number of common perpendiculars of length at most S ...
Assessment of Hyperthyroidism Response for Internal irradiation

Mohammed, Mona Ali Alameen (Sudan University of Science and Technology, 2013-01-01)

The aim of the current thesis was to assess the response of ablative dose of Iodine-131 (capsule of Na-I-131) for treatment of hyperthyroidism as retrospective study carried out in RICK during 2012. The selected sample ...
Syntheses and Solvent Extractive Properties of Three Hydroxamic Acids at Different Levels of Acidity

Bakhit, Egbal Eltom (Sudan University of Science and Technology, 2012-12-01)

The aim of this research is to study the extractive ability of some hydroxamic acids. Thus monoesters of this acid were synthesised and employed for preparation of the corresponding hydroxamic acid. Three compounds were ...
Improvement of Sequential Quadratic Programming Algorithms for Optimization

Osman, Siddiga Abadall (Sudan University of Science and Technology, 2013-01-01)

We consider the general nonlinear optimization problem defined as, minimize a nonlinear real-valued function of several variables, subject to a set of nonlinear equality and inequality constraints, this class of problems ...
The Finite Difference Approximation for One and Higher Dimensional Parabolic Problems

Haroon, Samah Abdelati (Sudan University of Science and Technology, 2013-02-01)

The finite difference approximation is a numerical method for solving differe- tial equations. The basic idea for the solution is to approximate a differential equation by a system of algebraic equations and is to replace ...
Unitary Representations of loop groups and fixed point properties of non linear mappings of semigroups

Madni, Yasir Abdelazeez Musa (Sudan University of Science and Technology‬, 2013-01-01)

We investigate the fixed points and selection of common fixed points for nonexpansive-type mappings. The representations of the unitary non irreducible generalize the restructure of the metaplectic approximation are ...
Isolation , Identification and Biological Activities of the Flavonoids of Cassia kordofania,Cassia italica and Cassia occidentalis

Mujawah, Adil Abbas Hassan (Sudan University of Science and Technology, 2013-05-01)

This work involved studies on three species belonging to the large genus Cassia which grow in Sudan and kingdom of Saudi Arabia. These species are: Cassia Kordofania ,Cassia italica and Cassia occidentalis. It was decided ...

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