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Browsing PhD theses : Science by Title
Now showing items 1-20 of 452
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(Sudan University of Science and Technology, 2012-12-01)In this study the seeds of the plant Erythrina abyssinica, were phytochemically screened and found to contain alkaloids, flavonoids, steroids ,terpenoids,Tannin and saponin. Seven of the alkaloids were isolated and ...
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(Sudan University of Science and Technology, 2016-01-10)This study is mainly focused on the alternative version of Heisenberg uncertainty relation. We have shown the separation of the total angular momentum of the electromagnetic field into its orbital and spin ...
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(Sudan University of Science and Technology, 2012-02-01)This work was carried out to trace the source, and to determine the metal contamination levels, which have harmful effects on the stability of some Sudanese vegetable oils: sesame seed, groundnut, cotton seed and ...
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(Sudan University of Science and Technology, 2016-06-10)In this research the variational iteration method is used for solving second-order initial value problems. The research discussed the use of this method to solve many important partial differential equations. This method ...
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(Sudan University of Science and Technology, 2016-07-10)We investigate nonlinear evolution equations with Lax integrability using the tool of differential forms and exterior differential systems. We restate the Lax equations of the nonlinear evolution equation in the form of ...
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Application of Homotopy Perturbation Method to Linear and Nonlinear Partial Differential Equations (Sudan University of Science and Technology, 2016-01-10)During the recent years, the studies and researches concentrated on the topic of Homotopy perturbation method, for being one the modern and effective methods for solving miscellaneous types of differential equations, ...
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(Sudan University of Science and Technology, 2016-08-10)Vegetable tannage is an eco-friendly method compared with environmental polluting chromium based method of tanning that is commonly used in commercial tanning and which prevents the collagen fibrous protein in animal skins ...
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(Sudan University of Science and Technology, 2014-06-11)n this thesis, we study the applications of differentiable manifolds and Lie groups to partial differential Equations (PDEs) which represent some of the important physical phenomena. Our primary objective in this thesis ...
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(Sudan University of Science and Technology, 2015-09-10)The main purpose of this work is to study the applications of Lie algebras up to Conservation Laws of Physics, Here we use the idea of symmetry Lie algebras to exploit a new method for solving partial differential equations, ...
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(Sudan University of Science and Technology, 2009-09-01)We give remarks on the construction of linear evolution equations. Logarithms and some examples of unbounded imaginary powers of operators are considered, and we determined the best constants in Young's inequality ...
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(Sudan University of Science and Technology, 2011-06-01)We show some Banach spaces of measurable operator-valued functions and established an interpolation formula for the measure of noncompactness. We study the spectral theory of ordered pairs of the linear operators on the ...
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(Sudan University of Science and Technology, 2016-01-10)In this thesis the variational iteration method is implemented to give exact solutions for seepage flow derivatives in porous media. A correction functional for the fractional partial equation is well constructed by a ...
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(Sudan University of Science and Technology, 2018-08-10)The most remarkable biomedical applications of nanoparticles (NPs) are in the diagnosis and treatment of various diseases. The promising future of gold nanoparticles (GNPs) in different biological applications has led to ...
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(Sudan University of Science and Technology, 2014-07-11)In the present work, elements concentration in fingernails samples of volunteers of different ages (males, females) were determined using atomic absorption spectroscopy (AAS) Perkin-Elmer, spectrophotometer.Fingernails ...
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(Sudan University of Science and Technology, 2006-06-01)Forty different pesticide and five heavy metals residues were investigated in a variety of water and agricultural soil collected from two different locations at Saudi Arabia during the periods in 2003 – 2004. The ...
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(Sudan University of Science and Technology, 2017-02-10)The aim of this study is to measure the levels of serum electrolytes, trace elements and total iron binding capacity (TIBC) in Sudanese patients with leukaemia and to investigate the levels of these elements in leukaemia ...
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(Sudan University of Science and Technology, 2019-09-04)The growth of frequently hypercyclic functions and common hypercyclic vectors for differential and translation operators and for the conjugate class of a hypercyclic operator and a Sot-Dense path of chaotic operators are ...
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(Sudan University of Science and Technology, 2016-10-10)The boundedness from below, the criterion for continuity and compactness of composition operators acting on α- Bloch spaces are shown. The essential norms of composition operators on and between μ-Bloch ...
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(Sudan University of Science and Technology, 2019-04-22)Dust storms are significant meteorological phenomena which occur for a percentage of time in arid and semi-arid areas especially at African and Middle East, and this phenomena effect of signal attenuation signal level ...
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(Sudan University of Science and Technology, 2018-11-01)Five ferrite catalysts(M2+Fe23+O2-4), whereM2+ represents Co2+,Ni2+, Fe2+, Zn2+orCa2+, were prepared byco-precipitation method, in whichone or more metals were precipitated together with the support or precursor. ...
Now showing items 1-20 of 452
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