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Persistent currents of ultrarelativistic plasma-encased endofullerene molecules entrapping a H atom

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Communications in Theoretical Physics 2024年第6期76卷 148-164页

作者： mustafa Kemal bahar Department of Physics Faculty of ScienceSivas Cumhuriyet University58140SivasTurkey

In this work,for the first time in the relevant literature,the persistent currents(PC)and induced magnetic fields(IMF)of an endofullerene molecule entrapping a hydrogen atom,under spherical confinement,are *** endofullerene molecule is enclosed within a spherical region and embedded in a plasma *** plasma environment is depicted with the more general exponential cosine screened Coulomb potential,and its relevant effects are analyzed by considering plasma screening *** relevant model for endohedral confinement is the Woods-Saxon confinement potential,which is compatible with experimental *** effects of various forms of Cn are thoroughly elucidated via the analysis of the confinement depth,spherical shell thickness,the inner radius,and the smoothing *** find the bound states in the spherically confined endofullerene,the decoupling of the second-order Dirac equation for the large and small components of the radial atomic wave functions is *** Dirac equation with the interaction potential is solved numerically by using the Runge-Kutta-Fehlberg method via the decoupling *** influence of spin orientations on the PC and IMF is also *** effects of spherical confinement,plasma shielding,and the structural properties of the fullerene on the PC and IMF are thoroughly ***,under given physical conditions,the optimal ranges of these effects are determined.

关键词： quantum plasma endohedral fullerene persistent current ultrarelativistic interaction induced magnetic field

Smart and collaborative industrial IoT: A federated learning and data space approach

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Digital Communications and Networks 2023年第2期9卷 436-447页

作者： bahar Farahani Amin Karimi Monsefi Cyberspace Research Institute Shahid Beheshti UniversityTehran***Iran Department of Computer Science and engineering Ohio State UniversityColumbusOH43210USA

Industry 4.0 has become a reality by fusing the Industrial Internet of Things(IIoT)and Artificial Intelligence(AI),providing huge opportunities in the way manufacturing companies ***,the adoption of this paradigm shift,particularly in the field of smart factories and production,is still in its infancy,suffering from various issues,such as the lack of high-quality data,data with high-class imbalance,or poor diversity leading to inaccurate AI ***,data is severely fragmented across different silos owned by several parties for a range of reasons,such as compliance and legal concerns,preventing discovery and insight-driven IIoT ***,valuable and even vital information often remains unutilized as the rise and adoption of AI and IoT in parallel with the concerns and challenges associated with privacy and *** adversely influences interand intra-organization collaborative use of IIoT *** tackle these challenges,this article leverages emerging multi-party technologies,privacy-enhancing techniques(e.g.,Federated Learning),and AI approaches to present a holistic,decentralized architecture to form a foundation and cradle for a cross-company collaboration platform and a federated data space to tackle the creeping fragmented data ***,to evaluate the efficiency of the proposed reference model,a collaborative predictive diagnostics and maintenance case study is mapped to an edge-enabled IIoT *** results show the potential advantages of using the proposed approach for multi-party applications accelerating sovereign data sharing through Findable,Accessible,Interoperable,and Reusable(FAIR)principles.

关键词： Industry 4.0 Industrial internet of things(IIoT) Artificial intelligence(AI) Predictive maintenance(PdM) Condition monitoring(CM) Federated learning(FL) Privacy preservinig machine learning(PPML) edge computing Fog computing Cloud computing

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Communications in Theoretical Physics 2020年第7期72卷 104-110页

作者： F Ungan M K bahar S Pal M e Mora-Ramos Faculty of Technology Department of Optical EngineeringSivas Cumhuriyet University58140SivasTurkey Faculty of Science Department of PhysicsSivas Cumhuriyet University58140 SivasTurkey Department of Quality Assurance CQA(SA)DGQA Ichapur-Nawabganj24Pgs(North)743144West BengalIndia Centro de Investigación en Ciencias Instituto de Investigación en Ciencias Básicas y AplicadasUniversidad Autónoma del Estado de MorelosAv.Universidad 1001CP62209CuernavacaMorelosMexico Facultad de Ciencias Básicas Universidad de MedellínMedellinColombia

We present a theoretical study on the effects of intense laser field(ILF)and static electric field on the linear and nonlinear optical properties of a cylindrical quantum dot with Rosen-Morse axial potential under the framework of effective mass and parabolic band *** study also takes into account the effects of the structure parameters(η,V1,and R).The analytical expressions of the linear,third-order nonlinear and total optical absorption coefficients(TOACs)and the relative refractive index changes(RRICs)are obtained by using the compact-densitymatrix *** results of numerical calculations show that the resonant peak position of the TOACs and RRICs shifts towards lower energies and the magnitude of the peak increases with the effect of the static electric field and *** addition,it is observed that while the resonant energies of the TOACs and RRICs of system shift towards the higher(lower)energies with the enhancement ofη,V1,they decrease with the augmentation of ***,the findings of this study show that the optical properties of the structure can be adjusted by changing the magnitude of structure parameters and applied external fields.

关键词： cylindrical quantum dot nonlinear optical response intense laser field electric field

Analyzing dynamic curve widening on forest roads

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Journal of Forestry Research 2017年第2期28卷 411-417页

作者： mustafa Akgul Murat Demir Abdullah e.Akay Forest engineering Division Faculty of ForestryForest Construction and TransportationIstanbul UniversitySariyerIstanbulTurkey Forest engineering Department Faculty of ForestryBursa Technical UniversityOsmangazi16200 BursaTurkey

Forest roads require important design specifications to ensure all-season access for various vehicles. Long and heavy log trucks can face serious maneuvering problems on forest roads due to insufficient amount of area to the left for road widening on horizontal curves. In order to provide safe and continuous shipment and transportation,appropriate curve widening areas should be provided for long vehicles along horizontal curves. In this study, a statistical model was developed to provide curve-widening solutions for long trucks（e.g., those with 18 wheels） considering various curve radius and deflection angles. The dynamic curve widening feature of Plateia 2013 program was employed to calculate curve widening for the specified vehicle. During the solution process, nine different horizontal curve diameters from 10 to 50 m（by 5 m intervals）and 17 different deflection angles from 90° to 170°（by 5°intervals） were evaluated to run horizontal curve-widening analysis. Using a multiple regression model, we made suitable predictions about curve widening. The curvewidening areas decrease as the horizontal curve radius increases, while increasing the deflection angle on horizontal curves increases curve widening areas. Clearly, the computer-based dynamic curve widening model developed in this study can be effectively used in determining optimum widening for horizontal curves by evaluating the number of alternatives that fit geometrical specifications and vehicle types.

关键词： deflection diameters radius specifications transportation alternatives determining evaluating insufficient season

Dynamic earth pressure on rigid retaining walls induced by a neighboring machine foundation,by the meshless local Petrov-Galerkin method

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earthquake engineering and engineering Vibration 2015年第4期14卷 647-661页

作者： Mehdi Veiskarami Arash bahar erfan Zandi Lak Geotechnical engineering Division Department of Civil EngineeringUniversity of Guilan Department of Civil and environmental engineering School of Engineering No.1Shiraz University Structural engineering Division Department of Civil EngineeringUniversity of Guilan

Dynamic earth pressure induced by machine foundations on a neighboring retaining wall is analyzed with emphasis on factors which control the intensity and location of the design forces. The meshless local Petrov-Galerkin (MLPG) method is used to analyze the problem for a variety of retaining wall and machine foundation geometries. The soil medium is assumed to be homogeneous and visco-elastic. The machine foundation is idealized as a harmonic sinusoidal dynamic force often encountered in practice. A number of analyses have been made to reveal the effect of the loading frequency, the location and size of the foundation and the soil shear wave velocity on the distribution and magnitude of the dynamic earth pressure. Results indicate that there is a critical frequency and a critical location for which the passive pressure takes the maxima in the entire duration of the dynamic load.

关键词： MLPG retaining wall dynamic loading visco-elastic soil machine foundation

Formation of Co-implanted Silicon Ultra-Shallow Junctions for Low Thermal Budget Applications

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Chinese Physics Letters 2013年第1期30卷 127-129页

作者： Rehana mustafa S.Ahmed e.U.Khan Department of Physics International Islamic UniversityIslamabadPakistan Advanced electronics Laboratory Faculty of Engineering&TechnologyInternational Islamic University IslamabadPakistan Center for emerging Sciences Engineering and TechnologyIslamabadPakistan Department of Physics Gomal UniversityD.I.KhanPakistan

We present a systematic study to create ultra-shallow junctions in n-type silicon substrates and investigate both pre-and post-annealing processes to create a processing strategy for potential applications in *** wafers were co-implanted with indium and C atoms at energies of 70 keV and 10 keV,respectively.A carefully chosen implantation schedule provides an abrupt ultra-shallow junction between 17 and 43 nm with suppressed sheet resistance and appropriate retained sheet carrier concentration at low thermal budget.A defect doping matrix,primarily the behavior and movement of co-implant generated interstitials at different annealing temperatures,may be engineered to form sufficiently activated ultra-shallow devices.

关键词： shallow annealing implantation

High Velocity Forming of Aluminum Cylindrical Cups-experiments and Numerical Simulations

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Journal of Materials Science & Technology 2007年第2期23卷 230-236页

作者： mustafa YASAR Faculty of Technical education ZKU/Zonguldak Karaelmas UniversityKarabukTurkey

A new two stage detonation forming machine was developed and cylindrical aluminum cups were formed by using gas detonation forming technology. The forming process was analyzed with the explicit finite element method with various parameters and ANSYS/LS-DYNA software. Defects of wrinkling and rupture were predicted for some forming conditions. The strain and the thickness distribution results were in good agreement with the experimental results. It was seen that thinning and forming mainly take place during the one fourth of the time. The effects of detonation pressure and blank holding force on the deformation of the work pieces were discussed. The numerical results were compared with those obtained in the experiments.

关键词： Detonation forming explicit finite element Detonation pressure

eLeCTRORHeOLOGICAL PROPeRTIeS OF POLYANILINe/PUMICe COMPOSITe SUSPeNSIONS

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Chinese Journal of Polymer Science 2007年第4期25卷 347-355页

作者： mustafa Yavuz Department of Chemistry Faculty of Arts and ScienceSüleyman Demirel University32260 IspartaTurkey

electrorheological （eR） properties of polyaniline （PAni）, pumice and polyaniline/pumice composites （PAPC） were investigated. Polyaniline and PAni/pumice composite were prepared by oxidative polymerization. PAni/pumice particlesbased eR suspensions were prepared in silicone oil （SO）, and their eR behavior was investigated as a function of shear rate, electric field strength, concentration and temperature. Sedimentation stabilities of suspensions were determined. It has been found that eR activity of all the suspensions increases with increasing electric field strength, concentration and decreasing shear rate. It has shown that the suspensions have a typical shear thinning non-Newtonian viscoelastic behavior. Yield stress of composite suspensions increased linearly with increasing applied electric field strength and with concentrations of the particles. The effect of high temperature on eR activity of purrfice/silicone oil systems was also investigated.

关键词： electrorheology Yield stress Pumice Composite Suspension

Optimization of hydrolysis conditions for the production of protein hydrolysates from fish wastes using response surface methodology

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Food Bioscience 2022年第1期45卷 332-339页

作者： Koray Korkmaz bahar Tokur Fatsa Faculty of Marine Science Ordu UniversityOrduTurkey

The recycling of waste from food processing is an important industrial procedure for obtaining protein sources with high added *** this study,trout(Onchorynchus mykiss),anchovy(engraulis encrasicolus),and whiting(Merlangius merlangus)wastes were *** hydrolyzation procedure was investigated under the optimum predicted conditions defined by time,temperature,and enzyme ratio(e/S)using alkaline protease(pH 8),Protamex(pH 7),and Flavourzyme(pH 7).The hydrolysis conditions that showed the best degree of hydrolysis(DH%)were optimized using response surface methodology(RSM)with the central composite design(CCD)and Box-Behnken design(BBD)*** effects of three independent variables,temperature(40-60℃),time(1-8 h),and enzyme concentrations(1-2%),were examined for model *** was determined that the DH%varies between 50.92%and 74.30% according to the type of fish waste and *** highest degree of hydrolysis was observed from trout waste(74.30%)and the lowest degree from whiting waste(50.92%)with *** this study,it has been shown that different degrees of hydrolysis and protein recovery can be obtained,depending on fish species,waste composition,enzyme type,and hydrolysis method.

关键词： Fish protein hydrolysate Optimization Degree of hydrolysis Protein recovery