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College of Science: Recent submissions
Now showing items 1-20 of 1856
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(Sudan University of Science & Technology, 2022-07-25)We obtain the spectrum and an effective estimate for the Lebesgue measure of the preimages of iterates of Farey and Gauss maps. The intervals and dichotomy between Farey fractions and sequence in the limit of infinite level ...
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(Sudan University of Science & Technology, 2023-01-19)In this thesis, we study a derivative-free trust-region algorithm for large-scale unconstrained optimization, using symmetric-rank1 (SR1) to update the Hessian at every iteration. The centeral finite-difference iterations ...
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(Sudan University of Science & Technology, 2022-03-19)This study aimed to extract and analyses Baobab seeds oil. for some physical properties, chemical properties, anti-biological effect, antioxidant and GC-MS for some essential oils. 98 mL of the oil were extracted from 450 ...
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(Sudan University of Science & Technology, 2022-06-28)Nano science represents one of the most popular powerful tools for controlling and changing the physical properties of matter. It is now widely used in many applications. One of the most popular known one is the field of ...
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(Sudan University of Science & Technology, 2023-01-12)The thermal properties are a primary indicator in the development of energy efficient heat transfer fluids that is required in numerous industry sectors. Recently nanofluid was introduced into the heat fluids to enhance ...
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(Sudan University of Science & Technology, 2022-08-30)We show the analysis of orthogonality Fourier frequencies and orbits in affine iterated function systems. We characterize the Fourier frames for the Cantor-4set, of absolutely continuous measures and for singular measures ...
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(جامعة السودان للعلوم والتكنولوجيا, 2022-11-19)تعتبر الأرقام القياسية من أهم المقاييس الإحصائية المستخدمة فى الدراسات الاقتصادية والتخطيطية، الأرقام القياسية هى مؤشرات إحصائية تستخدم لقياس تغيرات الظواهر، يعتبر الرقم القياسي لأسعار المستهلكين من أهم الأرقام القياسية ...
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(Sudan University of Science & Technology, 2023-02-22)The energy problem is one of the long standing problems facing civilization. This problem can be solved mainly using solar cells. Unfortunately, these cells suffer from their low efficiency. To solve this problem many solar ...
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(Sudan University of Science and Technology, 2022-09-05)This study was conducted with the aim to extract and analyze the leaves powder of Adansonia digitate and Tamarindus indica, collected from forest on the south of Nyala in southern Darfour state, Sudan. Two methods of ...
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(Sudan University of Science and Technology, 2022-04-02)Quantitative Structure-activity relationship (QSAR) study was carried out using ACD/lab and MOE software’s, for developing a correlation between the structural properties of acridinedione and polyhydroquinoline derivatives ...
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(Sudan University of Science and Technology, 2022-03-02)The aim of the study is to evaluate the amount of rare earth and rare elements in Albir mining area , which located about 84 km southWadi Halfa on Northern Sudan. Because of the great geological diversity of elements ...
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(Sudan University of Science and Technology, 2023-01-03)This study aimed to measure the concentration of natural radioactive elements in soil in Merowe City. Thirty soil samples were collected from different locations. The specific activity was determined by using the gamma ...
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(Sudan University of Science & Technology, 2022-09-27)This study aims to study the scattering theory using the Generalized Special Relativistic and some basic quantity equations, where it was found the scattering cross-section contains a new limit in which the cross section ...
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(Sudan University of Science & Technology, 2022-03-28)This study was designed to investigate the oil from the potential medicinal plant Mentha piperita. The oil has been studied by GC. MS and the antimioxidant potential has been screened. Gas chromatography–mass spectrometry ...
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(جامعة السودان للعلوم والتكنولوجيا, 2021-12-26)هدفت الدراسة إلى إختيار أفضل نموذج بين نموذجى الإنحدار الذاتي ذو الفجوات الموزعة الخطي ARDL والإنحدار الذاتي ذو الفجوات الموزعة غير الخطي NARDL للتكامل المشترك لتحليل وقياس العلاقة بين الصادرات والواردات وتحويلات السودانيين ...
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(Sudan University of Science & Technology, 2022-11-19)The proposed dam is located at the Sabaloka igneous complex on the sixth cataract of the Nile, where the Nile passes through the volcanic plateau of Sabaloka. The storage capacity of the proposed dam is about 4000 million ...
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(Sudan University of Science & Technology, 2021-03-15)The calibration is defines as set of operations that establish, under specified conditions, the relationship between values of quantities indicated by a measuring instrument or measuring system, or values represented by a ...
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(Sudan University of Science and Technology, 2022-09-21)The optical and electronic properties of four conjugated organic molecules, Indigo, Alizarin, Emodin and Purpurin, as potential organic solar cells were studied theoretically. The electronic properties, reorganization ...
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(Sudan University of Science and Technology, 2022-12-20)Five samples of Nix AL 2(1-x) and five other samples of NixS1-x O4 were prepared to be used as solar cell. The aim of this work is to characterize these films to see how there can used as solar cells. The crystal and ...
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(جامعة السودان للعلوم والتكنولوجيا, 2022-09-25)توجد العناصر المشعة في الطبيعة علي نطاق واسع مصادرها قد تكون طبيعية كالاشعة الكونية أو إصطناعي كالاشعة السينية ، للنظائر المشعة عدة إستخدامات وفي مجالات مختلفة فمنها الإستخدامات السممية مثل إستخداميا في العلاج والتشخيص ...
Now showing items 1-20 of 1856
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