Masters Dissertations : Science: Recent submissions

  • Physicochemical Characterization of FlavonoidS from (Pulicaria Crispa) 
    Mohamed, Mohamed El Mustafa Fadul Mustafa (Sudan University of Science and Technology, 2013-12-01)
    In this study four flavonoid compounds were isolated. Their structures were elucidated, and their biological activity was evaluated. Dry powdered aerial parts of Pulicaria crispa were extracted with aqueous methanol ...
  • Analysis of Some Cosmetics In Sudan By (XRF) 
    Mosa, Asma Alzain Bushra (Sudan University of Science and Technology, 2013-12-01)
    Recent works have shown that analysis in cosmetics and beauty products from the European and Asian markets indicate the presence of , Th and rare earths besides other trace elements. Considering these previous findings ...
  • Synthesis and Characterization of Carboxymethylcellulose from Sunt ( Acacia nilotica) Sawdust 
    Khamiss, Mehad Mustafa Adam (Sudan University of Science and Technology, 2013-09-01)
    Acacia nilotica wood shaving (Sawdust) is an industrial residue of acacia nilotica wood processing. It composes of cellulose, hemicellulose and lignin. This study aims to utilize wood shaving for preparing and characterizing ...
  • Some Applications of Whitney Embedding Theorem and Hamiltonian Systems 
    Omerein, Farha Mohammed (Sudan University of Science and Technology, 2013-05-01)
    In this research we discuss the Whitney embedding theorem via investigating that any given abstract manifold can be realized as a sub manifold of Euclidean space with twice the dimension . Also we study the vector fields ...
  • Study of Non Fermi Liquid by Holography 
    Ali, Ibrahim Omer Abdallah (Sudan University of Science and Technology, 2013-12-01)
    We study the holography duality of Anti-de Sitter space-time/conformal field theory (AdS/CFT) correspondence applied to strongly coupled systems known as Non-Fermi Liquid. We have reproduced the known result in ...
  • Effect of Magnetic Field on Absorption of Laser Spectacles 
    Alsaied, Elhoussain Abdul hadi Mohamed (Sudan University of Science and Technology, 2013-12-01)
    The equation of motion of the electron is used to fined an expression showing the magnetic field affect absorption of glasses to the laser beam. The analysis shows that when the magnetic field is adjusted to a critical ...
  • Peaceful Uses of Nuclear Power & the Stability Condition of Nuclei 
    Mohammed, Shajan Osman (Sudan University of Science and Technology, 2013-12-01)
    his research show the importance of the many peaceful uses of Nuclear Energy and the advantages and disadvantages of Nuclear Energy. This study concerned with generating electricity using nuclear power and the mechanism ...
  • Chemical Analysis of El-Malha Crater (Padala) Well Water 
    Tara, Ibrahim Mohammed Ali (Sudan University of Science and Technology, 2013-11-01)
    The objective of this work is to assess the quality of El-Malha Crater (Padala) well water. For comparison, samples of water were collected for analysis, not only from El-Malha Crater (Padala) well, but also from neighboring ...
  • Physiochemical changes of Vegetable oils after frying 
    Siddig, Fatima Ali (Sudan University of Science and Technology, 2011-01-01)
    The aim of this study was to investigate the quality changes occurring during deep frying (falafel) in cottonseed oil ,Sabah oil and peanut oil , were used for repeated deep frying of (falafel) for three consecutive days ...
  • Phytochemical Study of the Azadirachta indica Leaves 
    Ibrahim, Halla Babiker Omer (Sudan University of Science and Technology, 2011-08-01)
    The objective of this study is to extract the primary and secondary metabolites, such as fatty acid, Terpenes and octadecan derivatives from (Azadirachta Indica) leaves by using different solvents; (ethyl acetate, chloroform, ...
  • تحديد عناصر التربة وتراكيزها باستخدام تقنية الاشعة السينية المفلوره 
    السنوسي, الصاوي الشيخ (جامعة السودان للعلوم والتكنولوجيا, 2011-03-01)
    اخذت ثلاث عينات من تربة منطقة كافوري مربع 5 على اعماق مختلفة ، ومن ثم قمنا باختيار التربة الماخوذة من العمق 1500 سنتمتر لتحليلها لمعرفة العناصر المكونة لتلك العينة وتراكيزها بواسطة جهاز الاشعة السينية المتفلورة XRF. ومن ...
  • Countries Grouping Based on Socioeconomic Indicators by Using Cluster Analysis 
    Younis, Abu baker Basher Ahmed (Sudan University of Science and Technology, 2011-08-01)
    We have used in this research a technique that is rarely used in scientific research which is cluster analysis, where we did apply the two methods, hierarchical and K-means method to put different countries into subgroups ...
  • Determination of Some Heavy Metals in Sudanese Manufacture Paints 
    Elkhidir, Mohammed Abdelaziz (Sudan University of Science and Technology, 2011-08-01)
    The study was carried out to three heavy metals Cadmium , Chromium and Lead of 30 samples of paint (emulsion and enamel) , the colors of paint were : cream , white , yellow and red . The samples were taken from 6 different ...
  • The Role of Fiber Bending on Polarization and Intensity Losses 
    Mahadi, Amna (Sudan University of Science and Technology, 2004-01-01)
    In this research the effect of the bending fiber on the laser polarization is studied. It is found that the bending does not affect the plane polarization state of the laser as far as the change of output intensity with ...
  • Effect of Phase Angle between the External and Internal Electric Field on Amplification and Absorption of Light 
    Mohammed, Nada abbas Ahmed (Sudan University of Science and Technology, 2013-12-01)
    In this research the relation of amplification and absorption with the phase between external and internal field is found by two approaches. In the first one the electron equation of motion is utilized and the secondbased ...
  • نموذج صف الانتظار لنظام الإدامة بالتطبيق علي شركة شريان الشمال 
    الشيخ, رجاء حسن علي (جامعة السودان للعلوم والتكنولوجيا, 2004-01)
    تناول البحث تطبيق نظرية صفوف الانتظار بشركة شريان الشمال بالخرطوم/الورشة المركزية للفترة من 2002 إلي 2003 بهدف وضع نموذج لتحسين أداء العمل بالورشة ورفع كفاءة الخدمة التي تقدم وهي إصلاح الآليات عن طريق معرفة مقاييس نموذج ...
  • THEORY OF INTEGRAL EQUATIONS AND SOLUTIONS INVOLVING SOME SPECIAL FUNCTIONS 
    ABBAS, NADA MOHAMMED (Sudan University of Science and Technology, 2003-01-01)
    This dissertation consists of three parts The first one discusses the types of linear integral equations and gives some examples of theire solutions using the degenerate kernels , the difference kerenls and Schmidts ...
  • الطرائق التقريبية لإيجاد حدود الطبقات في المعاينة العشوائية الطبقية 
    محمد, صفاء دفع الله (جامعة السودان للعلوم والتكنولوجيا, 2003-09-01)
    يعد موضوع العينات أحد فروع الإحصاء التطبيقي من المواضيع المهمة في البحث العلمي، حيث تنقسم البحوث الإحصائية من حيث درجة الشمول إلى بحوث بطريقة الحصر الشامل وأخرى بطريقة العينات. تستخدم طريقة الحصر الشامل عندما يكون الباحث ...
  • A STOCHASTIC MODEL FOR EDUCATIONAL PLANNING OF SUDANESE UNIVERSITIES 
    OSMAN, ELRAYAH MOHAMMED ISHAQ (Sudan University of Science and Technology, 2003-07-01)
    Stochastic models for educational planning for Sudanese universities are designed in this thesis to analyze the efficiency of dynamic analysis of educational parameters utilized. The methodology of this study was introduced ...
  • Fredholm Properties of Toeplitz Operators On Dirichlet Spaces 
    Abd Elrhman, Belgiss Abd Elaziz (Sudan University of Science and Technology, 2003-06-01)
    This study is bused on a Dirichlet form theory. We characterize the weighted composition operators their adjoints and compactness of some functional Hilbert spaces. We show the Fredholm properties of some Toeplitz operators ...

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