- 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 321-340 of 647
-
دراسة مقارنة للتنبؤ بانتاج الصمغ العربي باستخدام نموذجي تحليل الانحدار والشبكات العصبية الاصطناعية (جامعة السودان للعلوم والتكنولوجيا, 2017-02-10)يعد تحليل الإنحدار ركناً أساسياً من أركان علم الإحصاء ، وإسلوباً مهما من أساليب الإحصاء التطبيقي في دراسة مختلف الظواهر الإقتصادية والإجتماعية كما يعد من أكثر الطرائق الإحصائية إستخداماً في مختلف العلوم والمجالات . إذ أنه ...
-
(Sudan University of Science and Technology, 2016-11-10)Stems of Detarium senegalense were screened for secondary metabolites. Phytochemical screening revealed the presence of steroids, triterpenes, flavonoids, tannins, saponins , anthraquinones and cyanogenic glycosides. ...
-
(Sudan University of Science and Technology, 2017-03-10)Dynamical Systems is the study of the long-term behavior of evolving systems. In this research we studied Lagrangian and Hamiltonian Dynamical systems using Clifford Ka ̈hler manifolds. The Clifford Ka ̈hler analogue of ...
-
(Sudan University of Science and Technology, 2017-01-10)The aim of this research work was to study the potential capability of zeolites and kaolin to remove some, heavy, metals from drilling mud wastewater. Four samples were used, (three zeolites and one kaolin). Two natural ...
-
(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. ...
-
(Sudan University of Science and Technology, 2016-11-10)Phytochemical screening the leaves of Annona squamosa and the stem bark of Borassus aethiopum revealed the presence of flavonoids, tannins, alkaloids and glycosides in both species. A silica gel column eluted with ...
-
(جامعة السودان للعلوم والتكنولوجيا, 2016-10-19)
-
(Sudan University of Science and Technology, 2016-12-10)Interaction of radiation plays an important role in determining the optical properties of matter. In this work amplification of electromagnetic waves depends on the relation between the external with internal field .It ...
-
(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 ...
-
(Sudan University of Science and Technology, 2016-11-10)The exchange rate is one of the macro-economic variables that have an impact on macroeconomic with its different sectors and the Exchange rate policy is one the most important policies that adopted by some countries to ...
-
(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 ...
-
(Sudan University of Science and Technology, 2016-10-10)The research aim to study the flavonoids of Geigeria alata (DC). From the ethanolic extract three fractions were prepared ethyl acetate, chloroform and n, butanol. From the ethyl acetate fraction two flavonoids were ...
-
(Sudan University of Science and Technology, 2016-10-10)The boundedness from below, the criterion for continuity and compactness of composition operators acting on α- Bloch spaces are shown. The essential norms of composition operators on and between μ-Bloch ...
-
(Sudan University of Science and Technology, 2016-11-10)Simple, precise and rapid isocratic HPLC-UV method for simultaneous determination of five multi component drugs was developed and validated. The first drug contained valsartan and hydrochlorothiazide, the separation was ...
-
(Sudan University of Science and Technology, 2016-08-10)ABSTRACT This study aimed to evaluate Sudanese Civil Airlines domestic services for passenger & cargo, statistically estimate their cost function and determine the factors affecting their efficiency. The study endeavours ...
-
(Sudan University of Science and Technology, 2016-08-10)In this study, mesoporous ZnO (pure) and Zn0.95Cu0.05O were prepared using a simple solgel method in the presence of 2.3-dihydroxysuccinic acid as catalyst. The powders obtained were annealed under air in the temperature ...
-
(Sudan University of Science and Technology, 2016-11-10)Phytochemical screening of ethanolic extract of leaves of Catharanthus roseus and Narcissus brussonetii revealed the presence :saponins, alkaloids, steroids ,anthraquinones, tannins and flavonoids(Catharanthus roseus) ; ...
-
Characterization of Flavonoids from Albizia amara Leaves and their Biological Activity on Microbes (Sudan University of Science and Technology, 2016-10-10)Phytochemical screening of methanol extract of leaves of Albizia Amara revealed the presence of secondary metabolites: saponins, alkaloids, tannins, glycosides and flavonoids. Powdered shade- dried leaves (1kg) of A. amara. ...
-
(Sudan University of Science and Technology, 2016-09-10)We study the bounded variation , tensor products of Banach Lattices, tensor norms , operators in the category , the interpolation of injective or projective tensor products of Banach spaces . We give the decomposition ...
-
(sudan University of Science and Technology, 2016-06-10)Increasing industrialization and "chemicalization" of every sphere of human activity has created evident disturbances in the natural environment that affect human health. From among thousands of antropogenic chemical ...
Now showing items 321-340 of 647
Share
