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Browsing PhD theses : Science by Title

Browsing PhD theses : Science by Title

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  • Belgacem, Lajimi ben Amor ben (Sudan University of Science and Technology, 2007-01-01)
    In this dissertation we study the solution of system of ordinary differential equations (SODE) using Adomian decomposition method (ADM) and modified decomposition (MD) and we compared between the results of the two ...
  • Elhassan, Ibtehag Elhassan Mohamed; Supervisor, - Ibrahim Mukhtar Ahmed; Co-supervisor, - Elfatih Ahmed Hassan (Sudan University of Science and Technology, 2017-10-19)
    Computation of electron spin resonance parameters (Hyper Fine Coupling Constant and gtensor) by Density Functional Theory using the gauge-including projector augmented wave (GIPAW) method, and Gaussian09 program were ...
  • Hamad, Logman Abd Allah Saeed (Sudan University of Science and Technology, 2009-07-01)
    We used exterior algebra to study partial differential equations geometrically, and explained how to rephrase any system of partial differential equations as an exterior differential system (EDS). Our strategy is to ...
  • Ahmed, Ibrahim Abbas (Sudan University of Science and Technology, 2006-01-10)
    New optical tellurite glasses have been synthesized in the form 80TeO2-5TiO2-(15-x)WO3-xAnOm where AnOm is Nb2O5, Nd2O3 and Er2O3 and x = 0.01, 0.1, 1, 3, 5 and 7 mol%. Densities of the prepared glasses were measured at ...
  • Beelly, Osman Babiker Ibrahim (Sudan University of Science and Technology, 2014-10-11)
    Physicochemical, thermodynamic and thermal characteristics of A.sieberana.var.sieberana, A.gerrardii.var.gerrardii and A.tortilis.var.raddiana were studied using different physicochemical and thermal techniques. ...
  • AHMED, OMER ABDULRAHMAN ALOBIED (Sudan University of Science and Technology, 2015-04-01)
    Fourty gum samples from A.nilotrca var. nilotica and A.seyal var. seyal represented by eight composite samples were collected from eight locations within the sudan gum belt with different soil types. The locations are ...
  • Idris, Sahar Ahmed; Supervisor, Shawgy Hussein Abdalla (Sudan University of Science and Technology, 2016-07-10)
    We study Poisson itegerals and boundary components with a realization of Riemannian symmetric spaces. The Toeplitz matrices, unitary equivalence, 𝐿𝑝-isometries , equimeasurability , topological and analytical indices in ...
  • Hassan, Eltigani Ismail (Sudan University of Science and Technology, 2012-11-01)
    We characterize the finite rank of Bergman and Bargmann Toeplitz operators generated by a measure in many dimensions and show some applications. We showthe finite rank commutator of Toeplitz and Hankel operators with the ...
  • Ali, Abubaker Ibrahim Seliman; Supervisor, - Shawgy Hussein AbdAlla (Sudan University of Science and Technology, 2018-03-10)
    We study the operator commuting and essential commutant of analytic Toeplitz operators module the compact operators and Toeplitz operators in several complex variables and on the Bergman space of the until ball. We show ...
  • Ahmed, Musa Adam Abdallah; Supervisor, -Abdelrahim Bashir Hamid (Sudan University of Science and Technology, 2018-10-29)
    This study introduces the mechanical elements that are the main components in the dynamic modeling of mechanical systems. It discusses the electrical elements of voltage and current source, resistor, capacitor, inductor, ...
  • Taha, Gafaar Mohamed (Sudan University of Science and Technology, 2015-10-22)
    In this study we introduced Lie groups and Lie algebra . It was found out that , for a given variation ,described via Lie groups, the Lie algebra of that group gave rise to the invariants of the variations. We utilized ...
  • Mohammed, Safa Mohammed Ahmed; Supervisor, -Abdelrhim Bashir Hamid (Sudan University of Science and Technology, 2020-11-12)
    Optimal control is a mathematical method to fined values for a systems variables, so that these values lead the system to follow an optimal path or curve that achieves the maximum or minimum values for a characteristic ...
  • Babiker, Khalid Abdalla Mohammed Zein; Supervisor, - Mohamed Ali Bashir (Sudan University of Science and Technology, 2019-04-10)
    Twistor theory has been invented by R. Penrose in order to generalize gravity. He introduced a geometrical model for Minkowski space. This geometrical setup has been generalized in solving particle differential equations. ...
  • Ahmed, Yasmeen Sirag Osman Mohammed; Supervisor, - Mohammed Ali Bashir (Sudan University of Science and Technology, 2017-03-10)
    We formulated space-time in terms of twistors. In this formulation the points of space-time (events) are derived from twistors. So twistors are shown to be the primitive objects from which all concepts of spacetime arise. ...
  • Elzupir, Amin Osman (Sudan University of Science and Technology, 2014-01-01)
    Heterocyclic compounds containing nitrogen is the one of the most important biologically active compounds. Their molecules incorporate the core structure of some antiviral, antibacterial, anticancer, antimalarial and ...
  • Saleh, Mohammed Ismail Adam (Sudan University of Science and Technology, 2015-04-01)
    In this research Maxwell's electric wave equation was modified by inserting diffusion current and polarization terms, Maxwell's equation are used to derive Schrödinger equation beside Einstein energy-momentum relation ...
  • Mohammed, Khadmalla Basheir Gaussim; Supervisor, - Mubarak Dirar Abd-Allah (Sudan University of Science and Technology, 2017-01-10)
    In this work it was shown that the energy conservation in Newtonian and generalized special relativity are equivalent. It also shown that when the energy is conserved the definition of force in terms of momentum Leads to ...
  • Ahmed, Aya Sideg Alsadig Sed; Supervisor, -Mohamed Osman Sid Ahmed; Co-Supervisor, -Omer Salih Nour (Sudan University of Science and Technology, 2020-10-12)
    Solar cells based on organic-inorganic perovskites, such as CH3NH3PbX3 (X = I, Br, Cl), as light absorber materials, have recently emerged as one of the most promising class of photovoltaic devices. Given their high ...
  • Sedig, Yaseen Mohamed Osman; Supervisor, -Hassan I. Shaban; Co-Supervisor, - Ahmed AL Hassan Alfaki (Sudan University of Science and Technology, 2018-10-10)
    The results of this study were carried out to determine the composition of the uranium element in the Nuba Mountains area in Southern Kordofan region in the regions of Mount Uro and Mount Kurn. Forty samples were collected ...
  • Sendaluba, Mohammed Osman Mekki (Sudan University of Science and Technology, 2014-01-11)
    The one of the important aspect affected supported Sudan economy in the livestock sector north Kordofan state play a major role in this field. This research conducted during 2011 - 2012 and covers the factors affected ...

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