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Trajectory Control: Directional MWD Inversely New Wellbore Positioning Accuracy Prediction Method

Journal of China University of Geosciences 2004年第4期15卷 425-433页

作者： ahmed Abd Alaziz Ibrahim tagwa ahmed musa Faculty of Engineering China University of Geosciences Wuhan 430074 China Engineering Faculty Sudan University of Science and Technology Sudan Faculty of Earth Resources China University of Geosciences Wuhan 430074 China Engineering Faculty Sudan University of Science and Technology Sudan

The deviation control of directional drilling is essentially the controlling of two angles of the wellbore actually drilled, namely, the inclination and azimuth. In directional drilling the bit trajectory never coincides exactly with the planned path, which is usually a plane curve with straight, building, holding, and dropping sections in succession. The drilling direction is of course dependant on the direction of the resultant forces acting on the bit and it is quite a tough job to hit the optimum target at the hole bottom as required. The traditional passive methods for correcting the drilling path have not met the demand to improve the techniques of deviation control. A method for combining wellbore surveys to obtain a composite, more accurate well position relies on accepting the position of the well from the most accurate survey instrument used in a given section of the wellbore. The error in each position measurement is the sum of many independent root sources of error effects. The relationship between surveys and other influential factors is considered, along with an analysis of different points of view. The collaborative work describes, establishes a common starting point of wellbore position uncertainty model, definition of what constitutes an error model, mathematics of position uncertainty calculation and an error model for basic directional service.

关键词： wellbore trajectory bit trajectory actual/planned path steerable directional tool measurement while drilling (MWD) logging while drilling (LWD) position uncertainty error accuracy prediction weighting function

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Development Plan of East Unity Oil Field, Sudan, Using Reservoir Simulation Study

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Journal of China University of Geosciences 2002年第3期13卷 248-251页

作者： musa tagwa A Ibrahim ahmed A Guan Zhenliang Faculty of Earth Resources, China University of Geosciences, Wuhan 430074 Faculty of Earth Resources China University of Geosciences Wuhan 430074

Simulation study was applied in the development planning of East Unity oilfield, Sudan. A grid consisting of 2 000 cells was constructed. A major challenge of the study wasto evolve a full field development and future reservoir management strategy that would ensuremaximum recovery of oil based on well Un51. Simulation shows that Un51 as injection well inAradiebaC would yield better oil recovery than to be production well.

关键词： reservoir simulation east unity oil field water injection productionprofile

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Epidemiology of Measles Cases in South Darfur State, Sudan, 2011-2015

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Biomedical and Environmental Sciences 2017年第12期30卷 917-921页

作者： TAHA Hussein musa REHAB Ibrahim Kambo ABDELKAREEM Abdallah ahmed HASSAN Hussein musa Key Laboratory of Environmental Medicine Engineering Ministry of Education Department of Epidemioiogy and Biostatistics School of Public Health Southeast University Nanjing 210009 Jiangsu China World Health Organization WHO South Darfur Sub-Office Nyala 999129 Sudan Department of Physiology and Biochemistry Faculty of Veterinary Sciences University of Nyala P.O Box 155 999129 Sudan Department of Medical Microbiology Faculty of Medical Laboratory Sciences University of Khartoum Khartoum state P.O. Box 11081 Khartoum 999219 Sudan

Case-based surveillance measles data was defined according to World Health Organization （WHO） guidelines. A total of 511 measles cases were studied from 2011 to 2015 in Southern Darfur State, Sudan and 58.1% of cases were confirmed from Nyala city. About 43.4% of cases were males, 56.6% of cases were female, and 47.7% were children under five years old. Similarity, within February to June, the cases increased by 8.0% in children vaccinated through measles campaign, and 5.3% in children that used child vaccination card and 78.7% in unvaccinated one.

关键词： Epidemiology of Measles Cases South Darfur State

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An Optimal Algorithm for Resource Allocation in D2D Communication

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Computers, Materials & Continua 2023年第4期75卷 531-546页

作者： Shahad Alyousif Mohammed Dauwed Rafal Nader Mohammed Hasan Ali Mustafa musa Jabar ahmed Alkhayyat Research Centre University of MashreqBaghdadIraq College of Engineering Department of Electrical&Electronic EngineeringGulf UniversityAlmasnadKingdom of Bahrain Medical Instrumentation Techniques Engineering Dijlah University CollegeBaghdadIraq Department of Pharmacy Al-Mustaqbal University CollegeHilla51001Iraq Computer Techniques Engineering Department Faculty of Information TechnologyImam Ja’afar Al-Sadiq UniversityNajaf10023Iraq Department of Medical Instruments Engineering Techniques Al-Turath University CollegeBaghdad10021Iraq Department of Medical Instruments Engineering Techniques Al-Farahidi UniversityBaghdad10021Iraq College of Technical Engineering The Islamic UniversityNajafIraq

The number of mobile devices accessing wireless networks isskyrocketing due to the rapid advancement of sensors and wireless communicationtechnology. In the upcoming years, it is anticipated that mobile datatraffic would rise even more. The development of a new cellular networkparadigm is being driven by the Internet of Things, smart homes, and moresophisticated applications with greater data rates and latency *** are being used up quickly due to the steady growth of smartphonedevices andmultimedia apps. Computation offloading to either several distantclouds or close mobile devices has consistently improved the performance ofmobile devices. The computation latency can also be decreased by offloadingcomputing duties to edge servers with a specific level of computing ***-to-device (D2D) collaboration can assist in processing small-scaleactivities that are time-sensitive in order to further reduce task delays. The taskoffloading performance is drastically reduced due to the variation of differentperformance capabilities of edge nodes. Therefore, this paper addressed thisproblem and proposed a new method for D2D communication. In thismethod, the time delay is reduced by enabling the edge nodes to exchangedata samples. Simulation results show that the proposed algorithm has betterperformance than traditional algorithm.

关键词： D2D communication resource allocation latency optimization

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An Efficient Method for Heat Recovery Process and Temperature Optimization

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Computers, Materials & Continua 2023年第4期75卷 1017-1031页

作者： Basim Kareem Naser Mohammed Dauwed ahmed Alkhayyat Mustafa musa Jaber Shahad Alyousif Mohammed Hasan Ali Dentistry Department Al-Mustaqbal University CollegeHilla51001Iraq Medical Instrumentation Techniques Engineering Dijlah University CollegeBaghdad00964Iraq College of Technical Engineering The Islamic UniversityNajaf54001Iraq Department of Medical Instruments Engineering Techniques Al-Turath University CollegeBaghdad10021Iraq Department of Medical Instruments Engineering Techniques Al-Farahidi UniversityBaghdad10021Iraq Research Centre University of MashreqBaghdad11001Iraq College of Engineering Department of Electrical&Electronic EngineeringGulf UniversityAlmasnad4363Kingdom of Bahrain Computer Techniques Engineering Department Faculty of Information TechnologyImam Ja’afarAl-Sadiq UniversityNajaf10023Iraq

Flue gas heat loss accounts for a significant component of theoverall heat loss for coal-fired boilers in power plants. The flue gas absorbsmore heat as the exhaust gas temperature rises, which reduces boiler efficiencyand raises coal consumption. Additionally, if the exhaust gas temperatureis too high, a lot of water must be used to cool the flue gas for the wetflue gas desulfurization system to function well, which has an impact onthe power plant’s ability to operate profitably. It is consequently vital totake steps to lower exhaust gas temperatures in order to increase boilerefficiency and decrease the amount of coal and water used. Desulfurizationperformance may be enhanced and water use can be decreased by reasonableflue gas characteristics at the entry. This study analyzed the unit’s energyconsumption, investment, and coal savings while proposing four couplingstrategies for regulating flue gas temperature and waste heat recovery. Agraded flue gas conditioning and waste heat recovery plan was presentedunder the condition of ensuring high desulfurization efficiency, along withthe notion of minimizing energy loss owing to energy inflow temperaturedifference. Numerical results show that the proposed methods improved thesystem performance and reduced the water consumption and regulated theboiler temperature.

关键词： Heat exchange system boiler energy optimization temperature control

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Petrogenesis and Tectonic Implications of Peralkaline A-Type Granites and Syenites from the Suizhou-Zaoyang Region,Central China

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Journal of Earth Science 2018年第5期29卷 1181-1202页

作者： Hafizullah Abba ahmed Changqian Ma Lianxun Wang Ladislav A.Palinkas musa Bala Girei Yuxiang Zhu Mukhtar Habib State Key Laboratory of Geological Processes and Mineral Resources School of Earth SciencesChina University of GeosciencesWuhan 430074China Department of Geology Modibbo Adama University of TechnologyYola P.M.B.2076Nigeria Institute of Mineralogy and Petrology Faculty of SciencesUniversity of ZagrebZagreb HR-10000Croatia Department of Geology Faculty of Earth and Environmental SciencesBayero UniversityKanoNigeria Department of Mineral and Petroleum Resources Engineering Kaduna PolytechnicKadunaNigeria

In this study, we present systematic petrological, geochemical, LA-ICP-MS zircon U-Pb ages and Nd isotopic data for the A-type granites and syenites from Suizhou-Zaoyang region. The results show that the peralkaline A-type granites and syenites were episodically emplaced in Suizhou-Zaoyang region between 450±3 and 441±7 Ma which corresponds to Late Ordovician and Early Silurian periods, respectively. Petrologically, the syenite-peralkaline granite association comprises of nephefine normative-syenite and alkaline granite in Guanzishan and quartz normative syenite and alkafine granite in Huangyangshan. The syenite-granite associations are ferroan to alkali in composition. They depict characteristics of typical OIB （oceanic island basalts） derived A-type granites in multi-elements primitive normalized diagram and Ybffa vs. Y/Nb as well as Ce/Nb vs. Y/Nb binary plots. Significant depletion in Ba, Sr, P, Ti and Eu indicates fractionation of feldspars, biotite, amphiboles and Ti-rich augite. The values of eNd（t） in Guanzishan nepheline syenite and alkaline granite are ＋1.81 and ＋2.26, respectively and the calculated two-stage model age for these rocks are 1 040 and 1 003 Ma, respectively. On the other hand, the Huangyangshan alkaline granite has eNd（t） values ranging from ＋2.61 to ＋3.46 and a relatively younger two-stage Nd model age values ranging from 906 to 975 Ma, respectively. Based on these data, we inferred that the Guanzishan nepheline syenites and granites were formed from fractional crystallization of OIB-like basic magmas derived from upweliing of metasomatized lithospheric mantle. The Huangyangshan quartz syenite and granite on the other hand, were formed from similar magmas through fractional crystallization with low input from the ancient crustal rocks. Typically, the rocks exhibit Al-type granite affinity and classified as within plate granites associated with the Ordovician crustal extension and the Silurian rifting.

关键词： Huangyangshan Guanzishan OIB derived A-type granites nepheline syenite alkaline granite South Qinling Suizhou-Zaoyang region.

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土体等向固结曲线的Logistic模型

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岩土工程学报 2020年第5期42卷 976-980页

作者：周凤玺邵彦平 musa Abdallah Ibrahim ahmed 兰州理工大学土木工程学院甘肃兰州730050 西部土木工程防灾减灾教育部工程研究中心甘肃兰州730050

基于非饱和土等向压缩试验和Logistic函数,提出了一种土体等向固结曲线的模型。首先,对目前土体体变方程中常用的单对数和双对数线性模型的不足进行了分析;然后,借助Logistic函数,建立了各向等压条件下的土体孔隙比和压力模型,并给出了... 详细信息

基于非饱和土等向压缩试验和Logistic函数,提出了一种土体等向固结曲线的模型。首先,对目前土体体变方程中常用的单对数和双对数线性模型的不足进行了分析;然后,借助Logistic函数,建立了各向等压条件下的土体孔隙比和压力模型,并给出了模型中各参数的确定方法以及前期固结压力的解析表达;最后,通过与已有试验数据进行对比,验证了该模型的有效性,分析了各参数随非饱和土中吸力的变化规律。

关键词：等向压缩曲线非饱和土 Logistic函数前期固结压力

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Comparative study of the characterisation and extraction techniques of polyphenolic compounds from Acacia seyal gum

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Food Quality and Safety 2022年第1期6卷 24-33页

作者： ahmed A.M.Elnour Mohamed E.S.Mirghani Nassereldeen A.Kabbashi Khalid Hamid musa Fahimeh Shahabipour Nureddin Ashammakhi Nour Hamid Abdurahman International Institute for Halal Research and Training International Islamic University MalaysiaKuala LumpurMalaysia Bioenvironmental Engineering Research Centre Biotechnology Engineering DepartmentKuliyah of EngineeringInternational Islamic University MalaysiaKuala LumpurMalaysia Institute of Gum Arabic&Desertification Studies University of KordofanElobiedSudan Department of Food Science and Human Nutrition College of Agriculture and Veterinary MedicineQassim UniversityBuraydahKingdom of SaudiArabia Skin Research Centre Shahid Beheshti University of Medical SciencesTehranIran Department of Bioengineering Henry Samueli School of EngineeringUniversity of CaliforniaLos AngelesCAUSA Department of Biomedical Engineering College of EngineeringMichigan State UniversityEast LansingMIUSA Centre of Excellence for Advanced Research in Fluid Flow University Malaysia PahangGambangMalaysia

Background Acacia seyal gum(ASG)is an abundant source of natural polyphenolic compounds(NPPCs)and antioxidant activity with numerous benefits and is often used in cancer *** type of extraction technique can significantly impact the yield and isolation of NPPCs from *** traditional use of maceration extraction reportedly yields fewer *** This study investigated five extraction techniques for NPPCs and ASG antioxidant activity,namely:homogenisation,shaking,ultrasonication,magneticstirring,*** and methods The evaluation of the antioxidant activity(AoA)of the extracted NPPCs from ASG used five assays,namely:total flavonoids content,Folin-Ciocalteu index,2,2-diphenyl-1-picrylhydrazyl radical scavenging activity,ferric reducing antioxidant power,and cupric *** To minimise the data set dimensionality requires principal component *** ultrasonic and maceration techniques were the best techniques to extract NPPCs and examine the AoA of ASG,with a high correlation between the NPPCs and ***,the maceration process was slow(12 h)compared to ultrasonication(1 h).Slow extraction can result in a decline of the NPPCs due to polyphenol oxidase-enzyme and impact *** These findings provide an essential guide for the choice of extraction techniques for the effective extraction of NPPCs from ASG and other plant materials.

关键词： Polyphenolic extraction gum Arabic comparison of techniques principal component analysis ultrasonication

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Radiation-induced inflammation and autoimmune diseases

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Military Medical Research 2018年第1期5卷 62-71页

作者： Rasoul Yahyapour Peyman Amini Saeed Rezapour Mohsen Cheki Abolhasan Rezaeyan Bagher Farhood Dheyauldeen Shabeeb ahmed Eleojo musa Hengameh Fallah Masoud Najafi School of Medicine Jiroft University of Medical Sciences Department of Radiology Faculty of ParamedicalTehran University of Medical Sciences Department of Radiologic Technology Faculty of ParamedicineAhvaz Jundishapur University of Medical Sciences Department of Medical Physics School of MedicineIran University of Medical Sciences Departments of Medical Physics and Radiology Faculty of Paramedical SciencesKashan University of Medical Sciences Department of Medical Physics and Biomedical Engineering Faculty of MedicineTehran University of Medical Sciences (International Campus) Department of Physiology College of MedicineUniversity of Misan Research center for molecular and cellular imaging Tehran University of Medical Sciences Department of Chemistry Faculty of ScienceIslamic Azad University Radiology and Nuclear Medicine Department School of Paramedical Sciences Kermanshah University of Medical Science

Currently,ionizing radiation(IR)plays a key role in the agricultural and medical industry,while accidental exposure resulting from leakage of radioactive sources or radiological terrorism is a serious *** to IR has various detrimental effects on normal *** an increased risk of carcinogenesis is the best-known long-term consequence of IR,evidence has shown that other diseases,particularly diseases related to inflammation,are common disorders among irradiated *** disorders are among the various types of immune diseases that have been investigated among exposed *** diseases and diabetes are two autoimmune diseases potentially induced by ***,the precise mechanisms of IR-induced thyroid diseases and diabetes remain to be elucidated,and several studies have shown that chronic increased levels of inflammatory cytokines after exposure play a pivotal ***,cytokines,including interleukin-1(IL-1),tumor necrosis factor(TNF-α)and interferon gamma(IFN-α),play a key role in chronic oxidative damage following exposure to ***,these cytokines change the secretion of insulin and thyroid-stimulating hormone(TSH).It is likely that the management of inflammation and oxidative damage is one of the best strategies for the amelioration of these diseases after a radiological or nuclear *** the present study,we reviewed the evidence of radiation-induced diabetes and thyroid diseases,as well as the potential roles of inflammatory *** addition,we proposed that the mitigation of inflammatory and oxidative damage markers after exposure to IR may reduce the incidence of these diseases among individuals exposed to radiation.

关键词： Radiation Inflammation Autoimmune diseases Thyroid Diabetes

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3D Ergonomic Board: Kids Teaching and Learning Proposition

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Journal of Signal and Information Processing 2023年第3期14卷 25-46页

作者： Audu Omar ahmed Otobo Ijudai musa Palnam Industrial Design Department Faculty of Environmental Studies University of Maiduguri Maiduguri Nigeria

The caprice for the study came from an indigenous designed instructional board for teaching learners in nursery/primary schools (2 - 10 years) and the task whose overall topic is the reminiscence, retention of visuals aid use in the pedagogy. The study is to appraise the opinion of toddlers/teachers about the helpfulness of 3D-visuals (ergonomic board);the clarity of the intended functions of the 3D-visuals in the toddler’s lessons instruction and support from the producers in using them;and why visuals (conventional visual aids) in schoolroom instruction are misjudged/misinterpreted;their view about the functions in specific (conventional visuals) for the instruction pedagogy;and other sources of visuals provided other than the lesson’s instruction. Four nursery/primary schools participated in the study. Seventy-two (72) toddler’s/teachers participated in the study. The study examined using quantitative and qualitative approach for statistical analysis (using pie-chart and histogram). The findings suggested that the aspects of visuals items selected for comment and description are to some extent circumscribed by toddler’s learners’ linguistic resources. Understandably, the point made by researchers referred that visuals often fail to support learning as effectively as they might because they are not regarded as a full-fledged information mode that requires the same careful processing as verbal text, is borne out by the findings. Recommendation, the accountability is above all on producers of kid’s instructional materials: authors, editors, designers and illustrators of the materials. The implication of this is that toddlers’ instructional materials should, as in the case of illustrated books include both an overt explanation of the overall philosophy toward visuals and overview of their use.

关键词： Visual Enhancement Kid’s Teaching Pedagogy

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