- SUST Home
- →
- Theses and Dissertations
- →
- College of Science
- →
- PhD theses : Science
- →
- Recent submissions
JavaScript is disabled for your browser. Some features of this site may not work without it.
PhD theses : Science: Recent submissions
Now showing items 441-460 of 647
-
Sampling Inequalities and Fractional-Order Sobolev Semi-norms with Operator Theoretical Differences (Sudan University of Science and Technology, 2015-04-01)An extension of a bound on functions in Sobolev spaces with Scattered zeroes and applications to radial basis function surface fitting,spline interpolation,smoothing and polynomial are shown.The characterizations of ...
-
(جامعة السودان للعلوم والتكنولوجيا, 2015-05-01)الهدف من اجراء هذا البحث يكمن في ابراز الاهمية لدور التحليل العاملي والشبكات العصبية الاصطناعية كادوات حديثة للتحليل الاحصائي للمساعدة في كشف وتحديد اهم المتغيرات ذات التأثير على إنتاج أرباح التمويل الأصغر من مؤسسة ...
-
(Sudan University of Science and Technology, 2015-05-01)We deal with pseudodifferential operators with smooth symbols and Weierstras’s theorem in weighted Sobolev spaces. We describe the zeros, critical points, zero location and nth root asymptotics of Sobolev orthogonal p ...
-
(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 ...
-
(Sudan University of Science and Technology, 2015-05-01)We show the sampling theorems for multivariate , nonuniform average sampling , reconstruction in multiply generated , Riesz bases in Hilbert space related to sampling , dual frames in Hilbert space connected with ...
-
(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 ...
-
(Sudan University of Science and Technology, 2015-01-01)Physicochemical changes in parameters such as viscosity at 40, 100oC, flash point, Total Base Number (TBN), water content, sulfated ash, wear elements, insoluble residue, gasoline fuel dilution and additive elements were ...
-
(Sudan University of Science and Technology, 2015-02-01)This thesis investigated methods in covariate adaptive randomization in clinical trials. A new method, referred to by the author as critical percentage method (CPM) is introduced. The CPM method is compared with the MIN ...
-
(Sudan University of Science and Technology, 2015-03-01)Quinone derivatives are important compounds as they are widely distributed in nature and associated with abroad range of biological activities. Inthis work synthesis ofp-quinone derivativescontiningα,β-unsaturated carbonylor ...
-
(Sudan University of Science and Technology, 2015-02-01)This investigation represents a comparative study of five methods for determination of stoichiomtries and overall stability constants estimation techniques, including; two algebraic methods; point-wise calculation method ...
-
(Sudan University of Science and Technology, 2015-01-10)Fifteen Mannich bases and sixteen Schiff bases were synthesized . A general synthesis protocol was adopted . The following bases were synthesized : 2-dimethylaminomethyl-5,5-dimethylcyclohexane-1,3-dione (1) , ...
-
(جامعة السودان للعلوم والتكنولوجيا, 2015-1-10)يحتوي هذا البحث على دراسة توضح أثر استخدام طريقة علمية قديمة مثبتة إحصائيا ومستخدمة في تلخيص البيانات منذ قديم الزمان وهي طريقة التجميع في معالجة مشكلتين من المشاكل التي تواجه نموذج الإنحدار الخطي المتعدد عندما تنتقض بعض ...
-
(Sudan University of Science and Technology, 2015-01-10)Polymer solar cells are one of the promising alternative energies which can be easily manufactured with low coast. In this work polymer cells with different thicknesses and three different type of organic dyes (Rhodamine ...
-
المقارنة بين التحليل التمييزي والنموذج اللوجستي الثنائي و نماذج الشبكات العصبية في تصنيف المشاهدات (جامعة السودان للعلوم والتكنولوجيا, 2015-02-01)يعد التمييز بين المشاهدات من الأساليب الشائعة الاستخدام وذلك لكثرة الظواهر التطبيقية التي يمكن أن يتم تحليلها من خلال اسلوب التمييز بين المشاهدات. هنالك العديد من الطرق التي يمكن أن تستخدم للتمييز بين المشاهدات مثل الدالة ...
-
(Sudan University of Science and Technology, 2014-11-10)In this study, thirty one new compounds of 1- (α-aminobenzyl)-2- naphthol derivatives (Betti bases) were synthesized using two methods. In the first method, these compounds were synthesized via 1,3-naphthoxazines, ...
-
(Sudan University of Science and Technology, 2014-12-10)Laser technology recently becomes one of the widespread technology in many applications. This attracts attention to generation of laser and the mechanisms affecting this generation. One of the recent developments in ...
-
(Sudan University of Science and Technology, 2014-11-01)In this study Three plants species from eastern and western Sudan were studied: Namely Acacia nubica benth( Laot), Citrus paradisi (grapefruit ) and Combretum Hartmonnina Schweinf (Habeel ). The plant material was ...
-
(Sudan University of Science and Technology, 2014-09-10)Deep-fat frying at 180◦C or above is one of the fastest, oldest and simplest methods used for food cooking. It involved heating an edible oil or fat and uses the hot oil to cook food. The refinedsunflower, groundnut oils ...
-
(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 ...
-
(Sudan University of Science and Technology, 2014-09-11)The goal of this study was to remove naphthenic acids from some Sudanese crude oils by zeolites and clays (catalysts). Clay samples were collected from Red sea state in east of Sudan, Hatanakhour in Khartoum and thesynthetic ...
Now showing items 441-460 of 647
Share
