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Chinese Physics B 2021年第7期30卷 116-131页

作者： Eyube E S Rawen B O ibrahim n Department of Physics School of Physical SciencesModibbo Adama University of TechnologyP M B 2076 YolaAdamawa StateNigeria Directorate of Basic and Remedial Studies Abubakar Tafawa Balewa University(ATBU)P M B 750001BauchiBauchi StateNigeria Department of Physics Faculty of ScienceP M B 1069MaiduguriBorno StateNigeria

The Schrodinger equation is solved with general molecular potential via the improved quantization *** for bound state energy eigenvalues,radial eigenfunctions,mean kinetic energy,and potential energy are obtained in compact *** modeling the centrifugal term of the effective potential,a Pekeris-like approximation scheme is ***,we use the Hellmann–Feynman theorem to derive the relation for expectation *** state energy eigenvalues,wave functions and meanenergies of Woods–Saxon potential,Morse potential,Mobius squared and Tietz–Hua oscillators are deduced from the general molecular *** addition,we use our equations to compute the bound state energy eigenvalues and expectation values for four diatomic molecules viz.H_(2),CO,HF,and O_(2).Results obtained are in perfect agreement with the data available from the literature for the potentials and *** also show that as the vibrational quantum number increases,the mean kinetic energy for the system in a Tietz–Hua potential increases slowly to a threshold value and then *** in a Morse potential,the mean kinetic energy increases linearly with vibrational quantum number increasing.

关键词： general molecular potential Schrodinger equation improved quantization rule

A non-conventional hybrid numerical approach with multi-dimensional random sampling for cocaine abuse in Spain

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International Journal of Biomathematics 2018年第8期11卷 289-305页

作者： Maha A. Mohammed n. F. M. noor A. I. n. ibrahim Z. Sir Department of Mathematics Ibn-Al-Haitham College of Education University of Baghdad 477146 Baghdad Iraq Institute of Mathematical Sciences Faculty of Science University of Malaya 50603 Kuala Lumpur Malaysia

This paper introduces a non-conventional approach with multi-dimensional random sampling to solve a cocaine abuse model with statistical probability. The mean Latin hypercube finite difference (MLHFD) method is proposed for the first time via hybrid integration of the classical numerical finite difference (FD) formula with Latin hypercube sampling (LHS) technique to create a random distribution for the model parameters which are dependent on time t. The LHS technique gives advantage to MLHFD method to produce fast variation of the parameters' values via number of multidimensional simulations (100, 1000 and 5000). The generated Latin hypercube sample which is random or non-deterministic in nature is further integrated with the FD method to complete one cycle of LHS-FD simulation iteration. This process is repeated until n final iterations of LHS-FD are obtained. The means of these n final solutions (MLHFD solutions) are tabulated, graphed and analyzed. The numerical simulation results of MLHFD for the SEIR model are presented side-by-side with deterministic solutions obtained from the classical FD scheme and homotopy analysis method with Pade approximation (HAM-Pade). The present MLHFD results are also compared with the previous non-deterministic statistical estimations from 1995 to 2015. Good agreement between the two is perceived with small errors. MLHFD method can be used to predict future behavior, range and prediction interval for the epidemic model solutions. The expected profiles of the cocaine abuse subpopulations are projected until the year 2045. Both the statistical estimations and the deterministic results of FD and HAM-Pade are found to be within the MLHFD prediction intervals for all the years and for all the subpopulations considered.

关键词： Epidemic model finite difference method Latin hypercube sampling ordinarydifferential equation prediction interval random distribution SEIR

Thermal performance of domed roof in air-conditioned spaces

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Energy and Built Environment 2024年第2期5卷 270-287页

作者： ibrahim Reda Raouf n.AbdelMessih Mohamed Steit Ehab M.Mina Mechanical Power Engineering Faculty of EngineeringAin Shams University1 El-Sarayat St.Cairo 11517Egypt Architectural Engineering Faculty of EngineeringAin Shams UniversityCairoEgypt

Due to their thermal performance,domed roofs are one of the passive solutions that affect energy consumption in *** thermal performance of domed roofs has been investigated in many naturally ventilated ***,few studies have discussed their performance in conditioned ***,this study introduces a computational comparison between domed and flat roofs to investigate their impact on thermal comfort inside a conditioned *** an earlier stage,field measurements were carried out inside a Bahraini mosque to acquire its indoor air conditions during the summer period of 2021,in addition to validating the computational *** findings of this study confirm that,under mechanical cooling conditions,the flat roof offers a lower indoor temperature than the domed roof by 0.4℃and 0.1℃for open and closed doors,***,the air velocity is lower by approximately 0.01 m/s for both door *** overall PMV values of the flat roof are also lower by 0.07 and 0.01,while the PPD values are lower by 0.20,and 0.34 for open and closed doors,*** on these small differences,it can be concluded that the thermal performance of both roofing systems behaves equally in conditioned ***,the air patterns are substantially different,the overall thermal performance is *** similarity drives building designers to rethink the thermal performance of the domed roofs in air-conditioned spaces with such a hot climate,regardless of their aesthetic and acoustical behaviour.

关键词： Thermal comfort Computational fluid dynamics(CFD) Predicted mean vote(PMV)and predicted percentage dissatisfied(PPD) Domed roof Flat roof

Sensibility of male rats fertility against olive oil, nigella sativa oil and pomegranate extract

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Asian Pacific Journal of Tropical Biomedicine 2013年第7期3卷 563-568页

作者： Sherif W. Mansour Sibghatullah Sangi Sree Harsha Mueen A. Khaleel A. R. n. ibrahim Biomedical Sciences Department College of Clinical Pharmacy King Faisal UniversityKSA Physiology Department Faculty of Medicine Zagazig UniversityEgypt Pharmacy Practice Department College of Clinical Pharmacy King Faisal UniversityKSA Pharmaceutical Sciences Department College of Clinical Pharmacy King Faisal UniversityKSA Department of Biochemistry Faculty of Pharmacy Minia UniversityMinia Egypt

Objective:To clarify the modulatory effects of daily consumption of pomegranate extract(PE),olive oil(OO)andnagilla sativaoil(nSO)on antioxidant activity,sperm quality and pituitary-testicular axis of adult male wistar ***:Thirty-two adult male Wistar rats were dividedinto four equal groups,eight rats *** rat gastric tubes,1.0 mL distilled water,1.0 mL PE,0.4mL nSO and 0.4 mL OO were orally administered daily for 6 weeks in the first,second,third andfourth groups,*** organs,body weight,sperm criteria,testosterone,FSH,LH,inhibin-B,lipid peroxidation,and antioxidant enzyme activities were *** the endof the study protocol,analyses occurred at the same *** were analysed by AnOVA test and Pnsidered to be a significant ***:In all studied groups,malondialdehydelevel was significantly decreased accompanied with an increases in glutathione peroxidase *** treated with PE showed an increase in catalase activities accompanied withan increase in sperm concentration which was also observed in nSO *** PE treated group,sperm motility was also increased accompanied with decreased abnormal sperm ***,OOand PE treated groups shows an insignificant effect on testosterone,inhibin-B,FSH and LH incomparison with control ***:These results show that administration of PE,nSOand OO could modify sperm characteristics and antioxidant activity of adult male wistar rats.

关键词： Pomegranate extract nagilla sativaoil Olive oil Testosterone FSH LH Inhibin-B Lipid peroxidation Sperm characteristics Antioxidant enzymes

Effects of Imperfect Quality and Defective Items on Economic Production Lot Size

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厦门大学学报（自然科学版） 2002年第S1期41卷 247-页

作者： Raafat n ibrahim Paul Lochert Department of Mechanical Engineering Monash UniversityDepartment of Mechanical Engineering Monash University AustraliaAustralia

The classical EPQ model has been used for a long ti me and is widely accepted and implemented. nevertheless, the analysis for finding an economic lot size has based on a number of unrealistic assumptions. A common unrealistic assumption in using EPQ is that all units produced are of good quali ty. The classical EPQ model shows that the optimal lot size will generate minimum ma nufacturing cost, thus producing minimum setup cost and inventory cost. However, this is only true if all products manufactured in the process are assumed to be of good quality (i.e. all products are within the specification limits). In rea lity this is not the case, therefore, it is necessary to consider the cost of im perfect quality items, because this cost can influence the economic lot size. Ma ny studies and recent papers have indicated that there is a significant relation ship between economic production lot size and process/product quality. However, their models included either the imperfect quality items (not necessarily de fective) which are to be sold at a discounted price or defective items which can be reworked or rejected. The aim of this paper is to provide a framework to integrate three different sit uations (discounted pricing/rework/reject) into a single model. 100% inspection is performed in order to distinguish the amount of good quality items, imper fect quality items and defective items in each lot. In this paper, a mathematica l model is developed, and a numerical example is presented to illustrate the sol ution procedures. It is found that the economic production lot size tends to inc rease as the average percentage of imperfect quality items and defectives (rejec ted items) increases.

关键词： EPQ lot size imperfect/defective items

Energy Management Control StraEnergy Management Control Strategy for Renewable Energy System Based on Spotted Hyena Optimizertegy for Renewable Energy System Based on Spotted Hyena Optimizer

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Computers, Materials & Continua 2021年第5期 2271-2281页

作者： Hegazy Rezk Ahmed Fathy Mokhtar Aly Mohamed n.ibrahim College of Engineering at Wadi Addawaser Prince Sattam Bin Abdulaziz UniversityWadi Addawaser11991Saudi Arabia Electrical Engineering Department Faculty of EngineeringMinia UniversityMinia61111Egypt Electrical Engineering Department Faculty of EngineeringJouf UniversitySakakaSaudi Arabia Electrical Power and Machine Department Faculty of EngineeringZagazig UniversityZagazigEgypt Department of Electrical Engineering Aswan UniversityAswan81542Egypt Electronics Engineering Department Universidad Tecnica Federico Santa MariaValparaiso2390123Chile Department of Electromechanical Systems and Metal EngineeringGhent UniversityGhent9000Belgium FlandersMake@UGent–corelab EEDT-MP 3001LeuvenBelgium Electrical Engineering Department Kafrelshiekh UniversityKafr el-Sheikh33511Egypt

Hydrocarbons,carbon monoxide and other pollutants from the transportation sector harm human health in many *** cell(FC)has been evolving rapidly over the past two decades due to its efficient mechanism to transform the chemical energy in hydrogen-rich compounds into electrical *** main drawback of the standalone FC is its slow dynamic response and its inability to supply rapid variations in the load ***,adding energy storage systems is ***,to manage and distribute the power-sharing among the hybrid proton exchange membrane(PEM)fuel cell(FC),battery storage(BS),and supercapacitor(SC),an energy management strategy(EMS)is *** this research work,an optimal EMS based on a spotted hyena optimizer(SHO)for hybrid PEM fuel cell/BS/SC is *** main goal of an EMS is to improve the performance of hybrid FC/BS/SC and to reduce the amount of hydrogen *** prove the superiority of the SHO method,the obtained results are compared with the chimp optimizer(CO),the artificial ecosystem-based optimizer(AEO),the seagull optimization algorithm(SOA),the sooty tern optimization algorithm(STOA),and the coyote optimization algorithm(COA).Two main metrics are used as a benchmark for the comparison:the minimum consumed hydrogen and the efficiency of the *** main findings confirm that the minimum amount of hydrogen consumption and maximum efficiency are achieved by the proposed SHO based EMS.

关键词： Modelling optimization energy management fuel cell supercapacitor hybrid system

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棉用丙烯酰胺化学变性和活性染料染色一步法

国外纺织技术（化纤．染整．环境保护分册） 1989年第4期 14-16页

作者： n.A.ibrahim 傅继树

引言已经证实纤维素纤维和活性染料在碱性条件下形成酯键或醚键结合。已知纤维素纤维和丙烯酰胺在碱性介质下反应得到氨基甲酰乙基化纤维素。在一般实践实践中,棉织物的氨基甲酰乙基化与活性染料染色通常是分步、前后连续进行的。

关键词：棉织物染整丙烯酰胺活性染料

Comparison of vergence mechanisms between university students with good and poor sleep quality

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International Journal of Ophthalmology(English edition) 2024年第2期17卷 353-358页

作者： Pui Juan Woi Joyce Yi Ling Lu Mohd Izzuddin Hairol Wan nur Amirah ibrahim Optometry and Vision Science Programme Center for Community Health Studies(ReaCH)Faculty of Health SciencesUniversiti Kebangsaan MalaysiaKuala Lumpur 50300Malaysia Centre of Optometry Studies Faculty of Health SciencesUniversiti Teknologi MARASelangor BranchPuncak Alam CampusSelangor 42300Malaysia

AIM:To compare the vergence mechanisms between good and poor sleepers in university ***:A total of 64 university students were recruited in this *** validated Malay version of Pittsburgh Sleep Quality Index questionnaire(PSQI-M)was used to measure the participants’sleep quality over the past *** were categorized as good sleepers(n=32)and poor sleepers(n=32)based on the PSQI-M *** and fusional vergences were measured at distance and ***-Whitney U test was used to compare heterophoria,negative fusional vergence(nFV),and positive fusional vergence(PFV)at distance and near between good and poor *** correlation analysis was used to study the relationship between PSQI-M score and PFV at ***:Both distance and near heterophorias were not significantly different between good and poor sleepers(P>0.05).There was a difference in distance PFV(Pn good and poor sleepers,but not in distance nFV,near nFV,and near PFV(P>0.05).Distance PFV was negatively correlated with PSQI-M score(rs=-0.33,PnCLUSIOn:University students with poor sleep quality demonstrates a reduced ability to maintain fusion with increasing convergence demand at *** quality assessment during binocular vision examination in university students is recommended.

关键词： binocular vision vergence sleep quality university students

Vibrational Spectroscopic Investigations, Electronic Properties, Molecular Structure and Quantum Mechanical Study of an Antifolate Drug: Pyrimethamine

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Computational Chemistry 2022年第4期10卷 157-185页

作者： Pélagie Manwal A Mekoung Bel Youssouf G. Mountessou Maraf B. Mbah Martin Signe Auguste Abouem A Zintchem Charles P. n. nanseu ibrahim n. Mbouombouo Department of Inorganic Chemistry Faculty of Science University of Yaoundé I Yaoundé Cameroon Computational Chemistry Laboratory Department of Chemistry Higher Teacher Training College University of Yaoundé I Yaoundé Cameroon

The computational modelling supported by experimental results can explain the molecular structure, vibrational assignments, reactive sites and several structural properties. In this context, the spectroscopic (FT-IR, FT-Raman and nMR) analysis, electronic properties (HOMO and LUMO energies) and molecular structure of pyrimethamine (Pyr) were investigated by density functional theory (DFT) method associated with three levels of theory viz., B3LYP, Mn15 and wB97XD with 6-311++G(d,p) and def2TZVPP as basis sets, respectively in the Gaussian 16 programs. The 1H and 13C nMR chemical shifts were calculated with a gauge-independent atomic orbital (GIAO) approach by also applying the same levels of theory and basis sets. All experimental results were compared with theoretical data. Although the results revealed high degrees of correlation between the theoretical and experimental values for spectroscopic properties using the three methods. Furthermore, the atomic and natural charges, energy band gap and chemical reactivity were determined, while the frontier molecular orbital (FMO) and molecular electrostatic potential (MEP) surfaces were plotted to explain the reactive nature of the title molecule.

关键词： Electronic Property nMR Pyrimethamine Vibrational Spectrum

聚丙烯酸—表氯醇对免烫整理棉织物性能的影响

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国外纺织技术（化纤．染整．环境保护分册） 1989年第4期 29-32页

作者： n.A.ibrahim 叶雅君钱蕾

引言人们对交联配方中添加聚丙烯酸酯以改善免烫棉织物的亲水性已做了大量的研究。据作者所知,有关聚丙烯酸/表氯醇加入交联配方对被交联棉织物的物理、化学和机械性能的影响,还没有详细的文章发表。本文的目的是研究免烫整理交联配方... 详细信息

引言人们对交联配方中添加聚丙烯酸酯以改善免烫棉织物的亲水性已做了大量的研究。据作者所知,有关聚丙烯酸/表氯醇加入交联配方对被交联棉织物的物理、化学和机械性能的影响,还没有详细的文章发表。本文的目的是研究免烫整理交联配方中加入聚丙烯酸/表氯醇对交联织物物理、化学和机械性能的影响,并阐明获得高水平织物性能的机理。

关键词：棉织物整理性能聚丙烯酸表氯醇