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Browsing PhD theses : Science by Title

Browsing PhD theses : Science by Title

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  • Omer, Eisa Ahmed Bshir; Supervisor, -Osman Mohammed El Mekki (Sudan University of Science and Technology, 2020-01-06)
    The problem of the time dependent boundary layer is important for its applications in several areas, and many methods have been used to solve it. The objective of this research is to apply the (G\G) -expansion method ...
  • Mohamed, Amna Mohamed Ali; Supervisor, Shawgy Hussein Abd Alla (Sudan University of Science and Technology, 2016-08-10)
    We show the sparse complete Gabor frame with systems over irregular lattices .The pairs of dual Gabor frame generated by compact support , desired frequency localization and polynomials are considered . Similarly we consider ...
  • Konda, Afraa Khamies Kajo; Supervisor, -Ahmed Alhassan Alfaki Idris; Co-Supervisor, -Nassreldeen Abdelrazig Abdelbari Elsheikh (Sudan University of Science and Technology, 2019-12-12)
    This work explores the effects of 60Co and 137Cs γ-irradiation on the Photovoltaic parameters of mono-crystalline silicon solar cells. Two suitable (light source- solar cell) geometry were instrumented. They consist of ...
  • Obeid, Salwa Mohammed Elamin (Sudan University of Science and Technology, 2008-08-01)
    We considerd and proved with an estimation the analogues of Brown- Halmos and Neahri's theorems on the norms of Hankel operators, acting on Subspaces of Hardy type reflexive rearrangement-invariant spaces with nontrivial ...
  • Mohammed, Khalid Mohammed Haroun (Sudan University of Science and Technology, 2007-06-01)
    In this work ordinary Schrödinger equation (OSE) is generalized by using the expression for the electromagnetic wave expression inside a medium, instead of the in free space for the OSE. This generalized Schrödinger equation ...
  • Ahmed, Nagwa Idris Ali; Supervisor -, Mubarak Dirar Abdullah (Sudan University of Science and Technology, 2015-10-10)
    Using the dual nature of atomic and subatomic particles beside generalized special relativistic equation, two new quantum equations were obtained. The first one reduces to ordinary time independent Schrodinger equation ...
  • Abobuker, Tarig Abd Elazeem Abd Elhaleem; Supervisor, Mohammed Ali Basheer (Sudan University of Science and Technology, 2016-05-10)
    In this research we considered the geometrical interpretation of the wave equation. We have constricted the geometrical set up for the problem such as fiber bundle and it's coresection . We have also utilized Lorentzian ...
  • Suleiman, Asim Ahmed Babiker (Sudan University of Science and Technology, 2017-03-10)
    The minimal submanifolds with constant mean curvature and of a sphere with bounded second fundamental form are considered. An intrinsic rigidity theorem from minimal submanifolds with parallel mean curvature in a sphere ...
  • Mohamed, Omima Elnour Saeed (Sudan University of Science and Technology, 2013-10-01)
    Vector bundles are utilized in the study of physical fields . The connection of a fiber bundle corresponds to the gauge potential , and the physical field corresponds to the curvature of the fiber bundle . In this study ...
  • Mohammed, Naglaa Abubaker Balla; Supervisor, - Mohammed Ali Bashir (Sudan University of Science and Technology, 2017-12-10)
    In this research we studied Fourier transform and Fourier Analysis. We first introduced an analytical formulation using Hilbert space. We utilized the principle of uniform boundedness and the open mapping theorem to ...
  • Riak, Makur Makuac Chinor (Sudan University of Science and Technology, 2012-08-01)
    This study basically aims to discuss the topic of Geometries from a Symmetry Point of View. In this study we discovered that the unifying feature of several physical phenomena can be described by some geometric structures ...
  • Ahmed, Ruga Hago (Sudan University of Science and Technology, 2011-08-01)
    We show the estimation of the logarithmic Sobolev constant and give the gradient estimates of heat semigroups. We study Wiener’s lemma for localized integral operators on a Hilbert space We consider the stability of ...
  • Ibrahim, Abushieba Abas; Supervisor, Shawgy Hussein Abdalla (Sudan University of Science and Technology, 2016-05-10)
    We show the geometry and heat flow on metric measure spaces. We study the gradient flows ,diffusion semigroups on metric and Wasserstien spaces under lower curvature bounds and over compact Alexandrov spaces. We also ...
  • Al-Faqeeh, Adeeb Saleh Abdull Rahman (Sudan University of Science and Technology, 2005-09-01)
    Grafting of N-tert-Butylacrylaide (BAM), tert-Butylacrylate (BAC), and n-Butylacrylate (n-BAC) onto maize starch in aqueous medium initiated by ceric ammonium nitrate (CAN) has been studied under N2 gas. The optimum ...
  • FedlElseed, Aisha Abass Abdalla; Supervisor, Ibrahim Mohmed Ahmed (Sudan University of Science and Technology, 2016-08-10)
    The industrial water is the water used to generate steam to be used in many industries. The tap water contains salts, minerals, ions, organic material and micro organisms. The ions of Ca+2 and Mg+2 are most common ions ...
  • Abd Elrahman, Belgiss Abd Elaziz (Sudan University of Science and Technology, 2010-01-01)
    We study the - estimates for certain kernels on Hilbert space , Schatten – von Neumann classes and the homogenous Besov- spaces . We introduce the sharp maximal Function on spaces of generalized homogenous type . We verified ...
  • Ibrahim, Mustafa Mohammed Mohammed (Sudan University of Science and Technology, 2009-11-01)
    The development of computers and the theory of doubly stochastic processes, have led to a wide variety of applications of the hidden Markov models (HMMs). Due to computational efficiency, discrete HMMs are often favorable. ...
  • Bakheit, Suleiman Ibrahim (Sudan University of Science and Technology, 2012-04-01)
    In this research were analyzed 20 samples collected water wells, where sedimentary rocks exists, were collected. The concentrations of Fe, Si, Mg and Ni were identified by laser induced breakdown spectroscopy (LIBS) and ...
  • SALIH, HASSNA MOHAMMED ALI MOHAMMED; Supervisor, - Mubarak Elmahal Ahmed (Sudan University of Science and Technology, 2019-01-10)
    This study aimed to identify the heavy metals in cosmetics powder using the Inductively Coupled Plasma / Optical Emission Spectroscopy technique (ICP-OES). This method gives a clear picture of the powder ingredients of ...
  • Hamed, Ahmed Yahya Mahmoud (Sudan University of Science and Technology, 2015-06-01)
    We show Stečkin’s theorem, transference, spectral decompositions, operators and examples with bounded and unbounded imaginary powers. We discuss the powers, spectrum of class operators, and the operator equations with ...

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