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PhD theses : Science: Recent submissions
Now showing items 301-320 of 647
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(جامعة السودان للعلوم والتكنولوجيا, 2017-07-10)يعتبر موضوع تحليل السلاسل الزمنية التدخلية من الموضوعات الإحصائية المهمة في تحليل اثر الكثير من الظواهر، السلسلة الزمنية عبارة عن مجموعة من المشاهدات أخذت على فترات زمنية نتيجة تعقب هذه الظاهرة لفترة زمنية طويلة نسبياً وفي ...
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(Sudan University of Science and Technology, 2017-04-10)This study was designed to investigate the major flavonoids of two medicinal plants: CordiasenensisandAcacia oerfotawhich are widely used in Sudanesetraditional medicine. The bark of Cordiasenensis was extracted with ...
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(جامعة السودان للعلوم والتكنولوجيا, 2017-07-10)تناولت هذة الدراسة مقارنة بين طريقتين من طرق التحليل العنقودي الحاد ، الذي ينحدر من تحليل متعدد المتغيرات وهما طريقة المتوسطات وطريقة التحليل الهرمي حيث تم تناول منهجية عمل كل من الطريقتين والزمن المستغرق لكل طريقة للحصول ...
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(Sudan University of Science and Technology, 2017-05-10)Magnetic properties of matter play an important role in human life. This requires developing the physical theories that describe magnetic phenomena. One of these important fields is the magnetic properties of superconductors. ...
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(Sudan University of Science & Technology, 2017-01-10)Generalized special relativistic energy expression, beside Fermi momentum and ordinary Newtonian gravity potential were used for stars equilibrium conditions. The radius which makes the energy minimum shows that stability ...
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A Comparative Study to Estimate and Forecasting Mortality Using Demographic and Statistical Models (SUDAN UNIVERSITY OF TECHNOLEGY & SCIENCES, 2017-03-10)Estimation and forecasting for indicators of mortality are of great importance for the decision-making, it is considered to be the main economic and social planning factor which contributes to the development of policies ...
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(Sudan University of Science and Technology, 2017-01-10)The existence and non-existence results for semilinear cooperative elliptic Systems for a class of fractional elliptic boundary value problems and constructor finite frames with a given frame operator are given .We ...
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(جامعة السودان للعلوم والتكنولوجيا, 2016-01-01)يهدف هذا البحث الى استخدام احد الاساليب الكمية الحديثة والمسمى باسلوب تحليل مغلف البيانات لتقدير كفاءة التكلفة لجميع المصانع العاملة فى السودان.وقد تم استخدام المساحة المزروعة(بالفدان) كمدخل، وتكلفة انتاج السكر بالطن(مدخل) ...
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(Sudan University of Science and Technology, 2017-03-10)In this research, low pressure chemical vapor deposition system(LPCVD) was used to produced carbon nanotubes. It has been used for sixteen samples of iron Fe and cobalt Co according to actylene C2H2 rates change of (10, ...
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(Sudan University of Science and Technology, 2017-04-10)Palm pollen were macerated with aqueous ethanol at room temperature . Fractionation of the ethyl acetate extract of palm pollen over silica gel column followed by a Sephadex column gave two compounds(I and II) classified ...
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(Sudan University of Science and Technology, 2017-04-10)Plasma equation is used in this work to derive new non linear Lorentz transformation, beside new special relativistic energy relation dependent on potential, pressure and thermal energy. This expression reduces to the ...
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(Sudan University of Science and Technology, 2017-05-10)In this work the effect of changing the anode of polymer solar cell on their performance was experimentally investigated .The cells were fabricated from ITO which act as a cathode beside MEH PPV ,Ecrchrom Black T and ...
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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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Geometric Inequalities and Balls in CR Sasakian Manifolds with Volume for Sub Riemannian Manifolds (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 ...
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(Sudan University of Science and Technology, 2016-06-10)We classify the functional model for dissipative and calculus for a pair of almost commuting selfadjoint operators. We find the estimates in operator class for a difference of function from the pick class of accretive ...
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(Sudan University of Science and Technology, 2017-02-10)This research aim to measuring the factors in terms of a number of patients who take oxygen therapy, time spent by patients in treatment and oxygen rate flow that affect medical oxygen demand by the governmental hospitals ...
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(Sudan University of Science and Technology, 2017-02-10)The study was focused on some heavy metals which are Mn, Zn, Cu and Pb that are known as the most toxic and contaminate to human health. In this study XRF and AAS techniques were used to determine concentrations of Mn, ...
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(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 ...
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(Sudan University of Science and Technology, 2017-03-10)The objectives of this study were both to develop, optimize and validate spectrophotometric and chromatographic methods for the analysis of amlodipine besylate and esomeprazole magnesium in pharmaceutical formulations in ...
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(Sudan University of Science and Technology, 2017-02-10)The study presented quantitative structure activity relationship QSAR investigation on three groups of 11-12 bioactive naphthoquinone derivatives that have activity against certain cancer cell lines. These three groups are ...
Now showing items 301-320 of 647
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