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Dissipative flow features of Carreau nanofluid with thermal radiation inside plane wall channel:Jeffery-Hamel analysis

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Propulsion and Power Research 2023年第2期12卷 253-272页

作者： Sohail Rehman hashim Fuad A.MAl-Yarimi Sultan Alqahtani mohammed Awade Department Mechanical Engineering School of Material Sciences and EngineeringGeorgia Institute of TechnologyAtlantaGAUSA Department of Mathematics and Statistics University of HaripurHaripur 22620Pakistan Department of Computer Science King Khalid UniversityMuhayel AseerSaudi Arabia College of Engineering Mechanical Engineering DepartmentKing Khalid UniversityAbhaSaudi Arabia Department of Information Systems King Khalid UniversityMuhayel AseerSaudi Arabia

The current article communicates a numerical investigation on laminar flow of dissipative generalized Newtonian Carreau nanofluid flowing through vertical conduit with converging and diverging plane *** and concentration characteristics due to enthalpy change,activation energy,and non-linear thermal radiation have been examined in the presence of buoyancy *** channel walls for both temperature and volumetric fraction are assumed to be *** instability mechanism of nanofluids is reported using a two-phase nanofluid model,which works reasonably well for nanoparticle concentrations below a certain threshold.A Jeffery-Hamel(J-H)flow model is developed by assuming an incompressible purely radial flow of Carreau nanofluids with heat and mass *** the suitable non-dimensional variables,the resulting nonlinear partial differential equations are turned into a system of ordinary differential *** modified governing equations are then numerically solved using the built-in boundary value problem solver bvp4c,on the template form of commercial software *** impacts of material,geometrical and thermophysical parameters governing the J-H problem are discussed and *** indicate that higher buoyance forces incline the velocity profiles in converging enclosure,while a slight reduction is perceived in opposing forces.A significant decrease of wall heat transmission is reflected for larger values of activation energy and radiation *** endorsing this communication,a comparison analysis is established with existing research and noticed a remarkable ***,the flow inside converging and diverging channels are deployed in nuclear reactors that use plate-type nuclear energies,high heat-flux condensed heat exchangers,high-performance micro-electronic cooling systems,jets,rockets nozzles,and jet propulsion inlet.

关键词： Nanofluids Buoyancy forces Converging/diverging channels Thermal radiation Activation energy Carreau fluid

Hybrid Deep Learning Enabled Load Prediction for Energy Storage Systems

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Computers, Materials & Continua 2023年第5期75卷 3359-3374页

作者： Firas Abedi Hayder M.A.Ghanimi mohammed A.M.Sadeeq Ahmed Alkhayyat Zahraa H.Kareem Sarmad Nozad Mahmood Ali hashim Abbas Ali S.Abosinnee Waleed Khaild Al-Azzawi Mustafa Musa Jaber mohammed Dauwed Department of Mathematics College of EducationAl-Zahraa University for WomenKarbalaIraq Biomedical Engineering Department College of EngineeringUniversity of Warith Al-AnbiyaaKarbalaIraq ITM Department Technical College of AdministrationDuhok Polytechnic UniversityDuhokIraq College of Technical Engineering The Islamic UniversityNajafIraq Department of Medical Instrumentation Techniques Engineering Al-Mustaqbal University CollegeHillah51001Iraq Computer Technology Engineering College of Engineering TechnologyAl-Kitab UniversityKirkuk36013Iraq College of Information Technology Imam Ja’afar Al-Sadiq UniversityAl-Muthanna66002Iraq Altoosi University College NajafIraq Department of Medical Instruments Engineering Techniques Al-Farahidi UniversityBagdadIraq Department of Medical Instruments Engineering Techniques Al-Turath University CollegeBaghdad10021Iraq Department of Medical Instruments Engineering Techniques Al-Farahidi UniversityBaghdad10021Iraq Department of Medical Instrumentations Techniques Engineering Dijlah University CollegeBaghdadIraq

Recent economic growth and development have considerably raised energy consumption over the *** load prediction approaches become essential for effective planning,decision-making,and contract evaluation of the power *** order to achieve effective forecasting outcomes with minimumcomputation time,this study develops an improved whale optimization with deep learning enabled load prediction(IWO-DLELP)scheme for energy storage systems(ESS)in smart grid *** major intention of the IWO-DLELP technique is to effectually forecast the electric load in SG environment for designing proficient *** proposed IWO-DLELP model initially undergoes pre-processing in two stages namely min-max normalization and feature ***,partition clustering approach is applied for the decomposition of data into distinct clusters with respect to distance and objective ***,IWO with bidirectional gated recurrent unit(BiGRU)model is applied for the prediction of load and the hyperparameters are tuned by the use of IWO *** experiment analysis reported the enhanced results of the IWO-DLELP model over the recent methods interms of distinct evaluation measures.

关键词： Load forecasting smart grid energy storage system electricity load forecasting artificial intelligence clustering

Effect of Different Etching Time on Fabrication of an Optoelectronic Device Based on GaN/Psi

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Journal of Renewable Materials 2023年第3期11卷 1101-1122页

作者： Haneen D.Jabbar Makram A.Fakhri mohammed Jalal Abdul Razzaq Omar S.Dahham Evan T.Salim Forat H.Alsultany U.hashim Laser and Optoelectronic Engineering Department University of Technology-IraqBaghdadIraq Department of Civil Engineering College of EngineeringCihan University-ErbilKurdistan RegionIraq Department of Petroleum and Gas Refinery Engineering Al-Farabi University CollageBaghdadIraq Applied Science Department University of Technology-IraqBaghdadIraq Department of Medical Physics Al-Mustaqbal University CollegeBabylonIraq Institute of Nano Electronic Engineering University Malaysia PerlisKangarPerlisMalaysia

Gallium nitride(GaN)/porous silicon(PSi)film was prepared using a pulsed laser deposition method and 1064 nm Nd:YAG laser for optoelectronic applications and a series of Psi substrates were fabricated using a photoelectrochemical etching method assisted by laser at different etching times for 2.5–15 min at 2.5 min intervals.X-ray diffraction,room-temperature photoluminescence,atomic force microscopy and field emission scanning electron microscopy images,and electrical characteristics in the prepared GaN on the Psi film were *** optimum Psi substrate was obtained under the following conditions:10 min,10 mA/cm^(2),and 24%hydrofluoric *** substrate exhibited two highly cubic crystalline structures at(200)and(400)orientations and yellow visible band photoluminescence,and homogeneous pores formed over the entire *** pores had steep oval shapes and were accompanied by small dark pores that appeared topographically and *** GaN/Psi film fabricated through PLD exhibited a high and hexagonal crystallographic texture in the(002)*** properties results revealed that the photoluminescence emission of the deposited nano-GaN films was in the ultraviolet band(374 nm)related to GaN material and in the near-infrared band(730 nm)related to the Psi *** topographical and morphological results of the GaN films confirmed that the deposited film contained spherical grains with an average diameter of 51.8 nm and surface roughness of 4.8 *** GaN/Psi surface showed a cauliflower-like morphology,and the built-in voltage decreased from 3.4 to 2.7 eV after *** fabricated GaN/Psi film exhibited good electrical characteristics.

关键词： Gallium nitride porous silicon photoelectrochemical etching pulsed laser deposition optical device

Severity Based Light-Weight Encryption Model for Secure Medical Information System

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Computers, Materials & Continua 2023年第3期74卷 5691-5704页

作者： Firas Abedi Subhi R.M.Zeebaree Zainab Salih Ageed Hayder M.A.Ghanimi Ahmed Alkhayyat mohammed A.M.Sadeeq Sarmad Nozad Mahmood Ali S.Abosinnee Zahraa H.Kareem Ali hashim Abbas Waleed Khaild Al-Azzawi Mustafa Musa Jaber mohammed Dauwed Department of Mathematics College of EducationAl-Zahraa University for WomenKarbalaIraq Energy Eng.Department Technical College of EngineeringDuhok Polytechnic UniversityDuhokIraq Computer Science Department College of ScienceNawroz UniversityDuhokIraq Biomedical Engineering Department College of EngineeringUniversity of Warith Al-AnbiyaaKarbalaIraq College of Technical Engineering The Islamic UniversityNajafIraq ITM Department Technical College of AdministrationDuhok Polytechnic UniversityDuhokIraq Computer Technology Engineering College of Engineering TechnologyAl-Kitab UniversityIraq Altoosi University College NajafIraq Department of Medical Instrumentation Techniques Engineering Al-Mustaqbal University CollegeHillah51001Iraq College of Information Technology Imam Ja’afar Al-Sadiq UniversityAl-Muthanna66002Iraq Department of Medical Instruments Engineering Techniques Al-Farahidi UniversityBagdadIraq Department of Medical Instruments Engineering Techniques Al-Turath University CollegeBaghdad10021Iraq Department of Medical Instruments Engineering Techniques Al-Farahidi UniversityBaghdad10021Iraq Department of Medical Instrumentations Techniques Engineering Dijlah University CollegeBaghdadIraq

As the amount of medical images transmitted over networks and kept on online servers continues to rise,the need to protect those images digitally is becoming increasingly ***,due to the massive amounts of multimedia and medical pictures being exchanged,low computational complexity techniques have been *** commonly used algorithms offer very little security and require a great deal of communication,all of which add to the high processing costs associated with using ***,a deep learning classifier is used to classify records according to the degree of concealment they *** images that aren’t needed can be saved by using this method,which cuts down on security *** is one of the most effective methods for protecting medical images after this *** and dispersion are two fundamental encryption processes.A new encryption algorithm for very sensitive data is developed in this *** splitting with image blocks is nowdeveloped by using Zigzag patterns,rotation of the image blocks,and random permutation for scrambling the *** that,this research suggests a Region of Interest(ROI)technique based on selective picture *** the first step,we use an active contour picture segmentation to separate the ROI from the Region of Background(ROB).Permutation and diffusion are then carried out using a Hilbert curve and a Skew Tent *** all of the blocks have been encrypted,they are combined to create encrypted *** investigational analysis is carried out to test the competence of the projected ideal with existing techniques.

关键词： Deep learning encryption medical images scrambling security skew tent map rotation zigzag pattern

Zinc Oxide Nano Particles Integrated Kenaf/Unsaturated Polyester BioComposite

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Journal of Renewable Materials 2019年第10期7卷 967-982页

作者： mohammed mohammed Bashir O.Betar Rozyanty Rahman Aeshah M.mohammed Azlin F.Osman Muhammed Jaafar Tijjani Adam Omar S.Dahham Uda hashim Nik Z.Noriman Center of Excellence Geopolymer and Green Technology School of Materials EngineeringUniversiti Malaysia PerlisKangarPerlisMalaysia Research Center(NANOCAT) University of MalayaKuala LumpurMalaysia College of Health Solutions.Health North Building Arizona State UniversityArizonaUSA College of Education for Pure Science Ibn-Alhaitham University of BagdadBagdadIraq Faculty of Engineering Technology Universiti Malaysia PerlisKampus Uniciti Alam Sg.ChuchuhPadang Besar(U)PerlisMalaysia Institute of Nano Electronic Engineering Universiti Malaysia PerlisKangarPerlisMalaysia.

Increasing need for materials with special features have brought various new inventions,one of the most promising hope for new material with special features and functionalities is composites ***,this study report an integration of zinc nanoparticles into kenaf/polyester polymer composite to introduce new behavior to the *** composite behaviors were compared for mechanical,thermal,moisture absorption and biodegradability *** Zinc Oxide nanoparticles entrenched in the kenaf/polyestaer composites net structure through chemical bonds between kenaf/ZnO/polyester resin,existence of ZnO significantly influence the mechanical and thermals properties of *** analysis based on(TGA)response revealed the integration of ZnO nanoparticles improved the thermal stability when thermal decomposition temperature beyond 3650 *** thermal cracking decreased with present of ZnO and increase with kenaf content(layers).The modulus,Tensile strength,break at elongation,flexural modulus,flexural strength and impact strength of the composites with higher content kenaf/ZnO nanoparticle are 560 MPa,58MPa,1.8%,1300 PMa,68 MPa and 31 MPa,***,addition of kenaf layers and ZnO results in larger mechanical properties enhancement,the results of the contact angle show improvement in wetting of the fibres with addition of ZnO nanoparticles.

关键词： Polymer composite thermal properties mechanical properties nano-composite biodegradable polymer nano zinc oxide

Hypoglycemic and antioxidant activities of Caesalpinia ferrea Martius leaf extract in streptozotocininduced diabetic rats

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Asian Pacific Journal of Tropical Biomedicine 2015年第6期5卷 460-470页

作者： Sherien Kamal Hassan Nermin mohammed El-Sammad Amria Mamdouh Mousa Maha hashim mohammed Abd el Razik Hussein Farrag Amani Nassir Eldin hashim Victoria Werner Ulrike Lindequist Mahmoud Abd El-Moein Nawwar Departement of Biochemistry National Research CentreCairo Egypt Departement of Pathology National Research CentreCairo Egypt Departement of Phytochemistry and Plant Systematics National Research CentreCairo Egypt Institute of Pharmacy Pharmaceutical Biology Ernst-Moritz-Arndt-Universitt GreifswaldD-17487 Greifswald Germany

Objective: To evaluate the antidiabetic and antioxidant ef ects of aqueous ethanolic extract of Caesalpinia ferrea(C. ferrea) leaf in normal and streptozotocin(STZ) induced diabetic ***: Male Sprague-Dawley rats divided into 6 groups of 6 rats each were assigned into diabetic and non-diabetic groups. Diabetes was induced in rats by single intraperitoneal administration of STZ(65 mg/kg body weight). C. ferrea extract at the doses of 250 and 500 mg/kg body weight was orally administered to both diabetic and non-diabetic animals for a period of 30 days. After completion of experimental duration serum, liver and pancreas were used for evaluating biochemical and histopathological ***: Oral administration of C. ferrea leaf extract significantly reduced elevated serum glucose, α-amylase, liver function levels and signii cantly increased serum insulin, total protein and body weight as well as improved lipid proi le due to diabetes. Furthermore, the treatment resulted in a marked increase in glutathione peroxidase, superoxide dismutase, catalase and reduced glutathione, and diminished levels of lipid peroxidation in liver and pancreas of diabetic rats. Histopathological studies demonstrated the reduction in the pancreas and liver damage and coni rmed the biochemical i ***: From the present study, it can be concluded that the C. ferrea leaf extract ef ectively improved hyperglycaemia while inhibiting the progression of oxidative stress in STZ-induced diabetic rats. Hence, it can be used in the management of diabetes mellitus.

关键词： Caesalpinia ferrea Diabetes Streptozotocin Hypoglycemia Antioxidant markers Histopathology

The Effect of Evotherm on Hot Mix Asphalt

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Engineering（科研） 2019年第9期11卷 557-575页

作者： Andrew Abah Onoja hashim mohammed Alhassan Bayero University Kano Nigeria

There has been a paradigm shift globally from high combustion rates of all human activities that contribute to global warming. Environmental awareness has been increasing rapidly over the past years. In these regards, Evotherm, which is a Fatty-Amine derivative of the hydrocarbon chain, was investigated and used in the production of asphalt to examine the effect. The overall influence of the admixture and temperature was examined. Seven (7) Laboratory specimens with different additive contents of 0%, 0.25%, 0.5%, 0.75%, 1.0%, 1.25% and 1.5% were produced and compacted at different compaction temperatures of 100°C, 115°C, 130°C, 145°C and 160°C, to evaluate Marshall Stability parameters. The binder content for the control test and admix samples were all kept constant for the range of 5.0%, 5.5%, 6.0%, 6.5% and 7% by weight of total mix for all the trial mixes for proper and uniform observation and also for the determination of the optimal mix for the control and admix samples. For each specimen mix, two (2) Marshall cylindrical samples were compacted at heavy compaction level of 75 blows, which represent heavy traffic category, and the mean result obtained for accuracy. This was done for all the temperature categories. Therefore, for this research work, 350 cylindrical cubes of Marshall Samples were evaluated in the laboratory. The result shows that despite the modification on the asphalt by the Evotherm product, the admixed asphalt exhibited similar engineering properties as Hot Mix Asphalt even at lower temperature of 115°C, and could be used as a first step in the promotion of improved carbon print from Nigerian Asphalt pavements.

关键词： Global-Warming Evotherm Optimal Mix Voids Marshall Tests Temperature and Pollution

Magnetic Properties and Electronic Structure of ThCo<sub>4</sub>B

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Modeling and Numerical Simulation of Material Science 2012年第3期2卷 51-59页

作者： mohammed Said mohammed Abu-Elmagd Samy hashim Aly Sherif Yehia Physics Faculty of Science at Damietta Mansoura University New Damietta Egypt Physics Faculty of Science Helwan University Cairo Egypt Physics Higher Institute of Engineering Shourok Academy Cairo Egypt

We present density functional theory DFT ab initio calculation of the electronic and magnetic properties of ThCo4B compound using the self-consistent full-potential linearized augmented plane wave (FPLAPW) method as implemented in the Wien2k package. The influence of the local environment on the Co magnetic moments is discussed by comparing the magnetic and electronic properties of ThCo4B to its parent ThCo5 compound. The total magnetic moment in these two compounds is dominated by the Co moment. The Spin orbit interaction affects the electronic structure and spin-density maps of the p-state of Th.

关键词： ThCo4B Electronic Structure Spin Density Map

Flame Retardancy Enhancement of Hybrid Composite Material by Using Inorganic Retardants

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Materials Sciences and Applications 2011年第8期2卷 1134-1138页

作者： mohammed Al-Maamori A Al-Mosawi Abbass hashim Materials and Engineering Research Institute Sheffield Hallam University Sheffield S1 1WB UK

This study aims to investigate the possibility of improving the flame Retardancy for the hybrid composite material consisting araldite resin (CY223). The hybrid composite was reinforced by hybrid fibers from carbon and Kevlar fibers on woven roving form (45o -0o), by using a surface layer of 4mm thick of Zinc Borate flame retardant. Afterward, the structure was exposed directly to gas flame of 2000oC due to 10 mm and 20mm exposure interval. The retardant layer thermal resistance and protection capability were determined. The study was continued to improve the performance of Zinc Borate layer mixed by 10%, 20% and 30% of Antimony Trioxide. To determine the heat transfer of the composite material the opposite surface temperature method was used. Zinc Borate with (30%) Antimony Trioxide gives the optimized result of the experiment.

关键词： Hybrid Composite Material Flame Retardant Material Inorganic Retardant