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PhD theses : Science: Recent submissions
Now showing items 241-260 of 647
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(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, ...
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(Sudan University of Science and Technology, 2018-10-15)Sinag carbon samples were prepared from wooden burning. The Four samaples were made to treat three of them by using some acids .The treatment of the three samples was made by the acids ( HCL,HNO3 and H2SO4:HNO3mixture ) ...
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(Sudan University of Science and Technology, 2018-10-21)Forty five samples of the gum from Azdirachta indica gum were collected from three locations (15 samples from each location) Khartoum, White Nile and Northern Kordofan states. from Sudan, during seasons 2014-2016; Three ...
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(Sudan University of Science and Technology, 2018-10-18)This study aims to use the survival methods in large censored data, sample of 1098 Sudanese children under five years from both categories, affected with different five diseases are acute renal failure, congenital deformity ...
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(Sudan University of Science and Technology, 2018-10-30)Numerous pyrazoline derivatives have been found to possess considerable biological activities; this fact had led us to model and design 120 trisubstituted 2-pyrazoline derivatives by linking pyrazoline ring system with ...
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(Sudan University of Science and Technology, 2018-11-07)Six samples of solar cells were fabrication in this research study by deposited poly (2-methoxy-5-(2’-ethyl-hexyloxy)-1.4 phenylene) (MEH-PPV) polymer layer on the indium tin oxide (ITO) glass, and deposited another layer ...
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(جامعة السودان للعلوم والتكنولوجيا, 2018-09-23)في هذه الأُطروحة دُرست تداعيات التوسع المسرّع لعالمنا بحسب نموذج الكون المخلوق المصوّر المبني على مبدأ الأمر، الذي حُقّق تجريبيّاً في هذا البحث باستخدام الثنائي الضوئي.حيث تنبأت الدراسة بمصير عالمنا عند نهاية حدّه ...
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(Sudan University of Science and Technology, 2018-11-01)Five ferrite catalysts(M2+Fe23+O2-4), whereM2+ represents Co2+,Ni2+, Fe2+, Zn2+orCa2+, were prepared byco-precipitation method, in whichone or more metals were precipitated together with the support or precursor. ...
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(Sudan University of Science and Technology, 2018-11-13)The phenomenon of poverty has become a great global economic and social problem that affects most of the countries of the world, especially the developing countries. The objective of this study is to identify the most ...
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(Sudan University of Science and Technology, 2018-08-20)Sonchus oleraceus (moleita) from the family Asteracae was investigated for its radical scavenging activity. The whole herb was firstly extracted with dicloromethane to remove as much of chlorophyll and other colouring pigments. ...
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(جامعة السودان للعلوم والتكنولوجيا, 2018-07-23)تناولت الدراسة مفهوم التكرار الجزئي وكيفية بناء تصاميم التجارب العاملية الجزئية لتجربة عامليه كاملة، وذلك باستخدام بيانات تجربة عامليه كاملة مكونة من ستة عوامل وكل عامل بمستويين، وتم تحليل البيانات بواسطة التكرار الكامل ...
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(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 ...
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(Sudan University of Science and Technology, 2018-08-10)The aim of this study is to apply lifetime models on the failure time of automatic teller machines (ATM) in Sudan and to estimate the reliability of machines, in order to compare between machines and methods of estimation, ...
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(Sudan University of Science and Technology, 2018-08-10)The most remarkable biomedical applications of nanoparticles (NPs) are in the diagnosis and treatment of various diseases. The promising future of gold nanoparticles (GNPs) in different biological applications has led to ...
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(Sudan University of Science and Technology, 2018-07-21)Screening mammography is a very common procedure for early breast cancer diagnosis. The attenuation of x-ray similarities between breast cancer tissue and adipose/glandular tissue makes the diagnosis challenging. Many ...
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(Sudan University of Science and Technology, 2018-07-10)Lorentz transformation is one of the cornerstone of special relativity. It is concerned only with inertial frames within the framework of special relativity, but doing nothing for non-inertial frames. Attempts were made ...
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(Sudan University of Science & Technology, 2018-07-22)Two Sudanese mica samples were collected from Shereik, River Nile State and Red Sea State. A systematic series of analysis were performed to characterize the micas and to study effects of impurities on physical, mechanical, ...
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(Sudan University of Science and Technology, 2018-06-05)Twenty nine samples of authentic A.nilotica var. tomentosa gum were collected from Sinnar and Blue Nile states of Sudan. Representative composite sample were prepared from all collected samples. Physicochemical methods ...
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(Sudan University of Science and Technology, 2018-06-10)Research on nanomaterials has become increasingly popular because of their unique physical, chemical, optical and catalytic properties compared to their bulk counterparts. Therefore, many efforts have been made to synthesize ...
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(Sudan University of Science & Technology, 2018-06-28)The calculation of phase transition in the configurational state (i.e. atomic arrangement) of AuxCu1-x nanoparticle (or Nano alloy)have been investigated by first principles and Monte Carlo calculations. The cluster ...
Now showing items 241-260 of 647
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