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Chinese Physics Letters 2011年第12期28卷 24-27页

作者： s.abdel-khalek M.M.A.Ahmed A-s F.Obada Department of Mathematics Faculty of ScienceSohag University82524 SohagEgypt Department of Mathematics Faculty of ScienceTaif University21974 TaifSaudi Arabia Department of Mathematics Faculty of ScienceAl-Azhar UniversityNasr City11884 CairoEgypt

We present an effective two-level system in interaction through two-photon processes with a single mode quantized electromagnetic field,initially prepared in a coherent *** entropy squeezing as an indicator of the entanglement in a mixed state system is *** temporal evolution of the negativity,Wehrl entropy,Wehrl phase distribution and field entropy squeezing are *** results highlight the important roles played by both the stark shift parameters and the mixed state setting in the dynamics of the Wehrl entropy,Wehrl phase distribution and field entropy squeezing.

关键词： state entropy system

A geometric phase for superconducting qubits under the decoherence effect

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Chinese Physics B 2013年第10期22卷 88-93页

作者： s.abdel-khalek K.Berrada Mohamed A.El-sayed M.Abel-Aty Mathematics Department Faculty of ScienceSohag University82524 SohagEgypt Mathematics Department Faculty of ScienceTaif UniversityTaifSaudi Arabia Al Imam Mohammad Ibn saud Islamic University (IMsIU) College of ScienceDepartment of PhysicsRiyadhSaudi Arabia The Abdus salam International Centre for Theoretical Physics Strada Costiera 11Miramare-TriesteItaly Laboratoire de Physique The'orique Faculte' des SciencesUniversite' Mohammed V-AgdalAvenue Ibn BattoutaBote Postale 1014Agdal RabatMorocco Informatics Department Faculty of ScienceTaif UniversityTaifSaudi Arabia

We propose a relaxation rate or dissipative cavity-based parameters that can be used as indicators of the stationary limit of a mixed state geometric phase. We perform our considerations for the system of a superconducting qubit in an open transmission line or interacting with a dissipative cavity. This system is very useful for performing an effective quantum computation by exhibiting the long collapse time of the geometric phase. It is shown that the geometric phase in the stationary limit does not depend on interaction time if the decay time exceeds an upper bound.

关键词： superconducting-qubit meometric phase mixed state decoherence

Pseudonym Mutable Based Privacy for 5G User Identity

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Computer systems science & Engineering 2021年第10期39卷 1-14页

作者： Rashid A.saeed Mamoon M.saeed Rania A.Mokhtar Hesham Alhumyani s.abdel-khalek Department of Computer Engineering College of Computers and Information TechnologyTaif UniversityP.O.Box 11099Taif21944Saudi Arabia Department of Electrical Engineering Faculty of EngineeringAlzaiem Alazhari UniversityKhartoum11111Sudan Department of Communications and Electronics Engineering Faculty of EngineeringUniversity of Modern Sciences(UMS)Sana'a16784Yemen Department of Mathematics College of SciencesTaif UniversityP.O.Box 11099Taif21944Saudi Arabia

Privacy,identity preserving and integrity have become key problems for telecommunication *** privacy threats are expected in 5G networks considering the large number of devices that will be *** Internet of Things(IoT)and long-term evolution for machine type(LTE-m)are growing very fast with massive data traffic the risk of privacy attacks will be greatly *** all the above issues standards’bodies should ensure users’identity and privacy in order to gain the trust of service providers and *** such threats,5G specifications require a rigid and robust privacy *** research studies have addressed user privacy in 5G *** paper proposes a method to enhance user identity privacy in 5G systems through a scheme to protect the international mobile subscriber identity(IMsI)using a mutable mobile subscriber identity(MMsI)that changes randomly and avoids the exchange of *** maintains authentication and key agreement(AKA)structure compatibility with previous mobile generations and improves user equipment(UE)synchronization with home *** proposed algorithm adds no computation overhead to UE or the network except a small amount in the home subscriber server(Hss).The proposed pseudonym mutable uses the XOR function to send the MMsI from the Hss to the UE which is reducing the encryption overhead *** proposed solution was verified by ProVerif.

关键词： 5G MMsI IMsI AKA privacy user identity

Entanglement and Entropy squeezing for Moving Two Two-Level Atoms Interaction with a Radiation Field

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Computers, Materials & Continua 2021年第3期66卷 2445-2456页

作者： s.abdel-khalek E.M.Khalil Beida Alsubei A.Al-Barakaty s.M.Abo Dahab Department of Mathematics Collage of ScienceTaif UniversityTaif21944Saudi Arabia Department of Mathematics Faculty of ScienceSohag UniversitySohag82524Egypt Department of Mathematics Faculty of ScienceAl-Azhar UniversityCairoEgypt Department of Physics The University College at AljamoumUmm Al-Qura UniversityMakkahSaudi Arabia Department of Mathematics Faculty of ScienceSouth Valley UniversityQena83523Egypt

In this paper,we analyzed squeezing in the information entropy,quantum state fidelity,and qubit-qubit entanglement in a time-dependent *** proposed model consists of two qubits that interact with a two-mode electromagnetic field under the dissipation *** analytical solution is calculated by considering the constants for the equations of *** effect of the general form of the time-dependent for qubit-field coupling and the dissipation term on the temporal behavior of the qubit-qubit entanglement,quantum state fidelity,entropy,and variance squeezing are *** is shown that the intervals of entanglement caused more squeezing for the case of considering the time-dependent ***,the entanglement between the qubits became more substantial for the case of time *** and negativity rapidly reached the minimum values by increasing the effect of the dissipation ***,the amount of variance squeezing and the amplitude of the oscillations decreased considerably when the time dependence increased,but the fluctuations increased *** show the relation between entropy and variance squeezing in the presence and absence of the dissipation parameter during the interaction *** result enables new parameters to control the degree of entanglement and squeezing,especially in quantum communication.

关键词： Entropy squeezing variance squeezing qubit-qubit entanglement moving qubits

Model of Fractional Heat Conduction in a Thermoelastic Thin slim strip under Thermal shock and Temperature-Dependent Thermal Conductivity

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Computers, Materials & Continua 2021年第6期67卷 2899-2913页

作者： F.s.Bayones s.M.Abo-Dahab Ahmed E.Abouelregal A.Al-Mullise s.abdel-khalek E.M.Khalil Department of Mathematics and statistics College of ScienceTaif UniversityTaif21944Saudi Arabia Department of Mathematics Faculty of ScienceSouth Valley UniversityQena83523Egypt Department of Mathematics Faculty of ScienceMansoura UniversityMansouraEgypt Department of Mathematics Faculty of ScienceSohag UniversitySohagEgypt Department of Mathematics Faculty of ScienceAl-Azhar UniversityGizaEgypt

The present paper paper,we estimate the theory of thermoelasticity a thin slim strip under the variable thermal conductivity in the fractional-order form is *** stress theory considering the equation of heat conduction based on the time-fractional derivative of Caputo of orderis applied to obtain a *** assumed that the strip surface is to be free from traction and impacted by a thermal *** transform of Laplace(LT)and numerical inversion techniques of Laplace were considered for solving the governing basic *** inverse of the LT was applied in a numerical manner considering the Fourier expansion *** numerical results for the physical variables were calculated numerically and displayed via *** parameter of fractional order effect and variation of thermal conductivity on the displacement,stress,and temperature were investigated and compared with the results of previous *** results indicated the strong effect of the external parameters,especially the timefractional derivative parameter on a thermoelastic thin slim strip phenomenon.

关键词： Non-Fourier heat conduction thermoelasticity fractional derivative variable thermal conductivity

Optimized Tuned Deep Learning Model for Chronic Kidney Disease Classification

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Computers, Materials & Continua 2022年第2期70卷 2097-2111页

作者： R.H.Aswathy P.suresh Mohamed Yacin sikkandar s.abdel-khalek Hesham Alhumyani Rashid A.saeed Romany F.Mansour Department of Computer science and Engineering KPR Institute of Engineering and TechnologyCoimbatore641407India Department of Medical Equipment Technology College of Applied Medical SciencesMajmaah UniversityAlMajmaah11952Saudi Arabia Department of Mathematics College of ScienceTaif UniversityTaif21944Saudi Arabia Department of Computer Engineering College of Computers and Information TechnologyTaif UniversityTaif21944Saudi Arabia Department of Mathematics Faculty of ScienceNew Valley UniversityEl-Kharga72511Egypt

In recent times,Internet of Things(IoT)and Cloud Computing(CC)paradigms are commonly employed in different healthcare *** gadgets generate huge volumes of patient data in healthcare domain,which can be examined on cloud over the available storage and computation resources in mobile *** Kidney Disease(CKD)is one of the deadliest diseases that has high mortality rate across the *** current research work presents a novel IoT and cloud-based CKD diagnosis model called Flower Pollination Algorithm(FPA)-based Deep Neural Network(DNN)model abbreviated as *** steps involved in the presented FPA-DNN model are data collection,preprocessing,Feature selection(Fs),and ***,the IoT gadgets are utilized in the collection of a patient’s health *** proposed FPA-DNN model deploys Oppositional Crow search(OCs)algorithm for Fs,which selects the optimal subset of features from the preprocessed *** application of FPA helps in tuning the DNN parameters for better classification *** simulation analysis of the proposed FPA-DNN model was performed against the benchmark CKD *** results were examined under different *** simulation outcomes established the superior performance of FPA-DNN technique by achieving the highest sensitivity of 98.80%,specificity of 98.66%,accuracy of 98.75%,F-score of 99%,and kappa of 97.33%.

关键词： Deep learning chronic kidney disease IoT cloud computing feature selection classification

Comparative Analysis of COVID-19 Detection Methods Based on Neural Network

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Computers, Materials & Continua 2023年第7期76卷 1127-1150页

作者： Inès Hilali-Jaghdam Azhari A Elhag Anis Ben Ishak Bushra M.Elamin Elnaim Omer Eltag Mohammed Elhag Feda Muhammed Abuhaimed s.abdel-khalek Computer sciences and Information Technology Programs Applied CollegePrincess Nourah bint Abdulrahman UniversityRiyadhSaudi Arabia Department of Mathematics and statistics College of ScienceTaif UniversityP.O.Box 11099Taif21944Saudi Arabia Department of Quantitative Methods Higher Institute of ManagementUniversity of Tunis1073Tunisia Department of Computer science College of Science and Humanities in Al-SulailPrince Sattam Bin Abdulaziz UniversityAl KharjSaudi Arabia Department of Computer science Faculty of Science and ArtsKing Khalid UniversityAbha61421Saudi Arabia Department of Mathematics Faculty of ScienceSohag UniversitySohagEgypt

In 2019,the novel coronavirus disease 2019(COVID-19)ravaged the *** of July 2021,there are about 192 million infected people worldwide and 4.1365 million *** present,the new coronavirus is still spreading and circulating in many places around the world,especially since the emergence of Delta variant strains has increased the risk of the COVID-19 pandemic *** symptoms of COVID-19 are diverse,and most patients have mild symptoms,with fever,dry cough,and fatigue as the main manifestations,and about 15.7%to 32.0%of patients will develop severe *** are screened in hospitals or primary care clinics as the initial step in the therapy for *** transcription-polymerase chain reaction(PCR)tests are still the primary method for making the final diagnosis,in hospitals today,the election protocol is based on medical imaging because it is quick and easy to use,which enables doctors to diagnose illnesses and their effects more *** to this approach,individuals who are thought to have COVID-19 first undergo an X-ray session and then,if further information is required,a CT-scan *** methodology has led to a significant increase in the use of computed tomography scans(CT scans)and X-ray pictures in the clinic as substitute diagnostic methods for identifying *** provide a significant collection of various datasets and methods used to diagnose COVID-19,this paper provides a comparative study of various state-of-the-art *** impact of medical imaging techniques on COVID-19 is also discussed.

关键词： Neural networks frameworks intelligent systems COVID-19 CT

Crosstalk between androgen signaling and the chemokine receptor CXCR4:a novel strategy to promote myelin regeneration

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Neural Regeneration Research 2025年第9期20卷 2581-2582页

作者： Marianne Bardy-Lagarde Narimène Asbelaoui abdel Mouman Ghoumari UMR1195 “Diseases and Hormones of the Nervous System”Inserm and University Paris-SaclayKremlin-BicêtreFrance

Multiple sclerosis(Ms)is the most common chronic disease of the central nervous system(CNs)in young adults and represents the first cause of severe handicap,originally non-traumatic(Oh et al.,2018).Ms is chara cterized by the infiltration of auto reactive lymphocytes specific to myelin through the blood-brain barrier,which results in the appearance of inflammatory demyelinating lesions caused by the death of the central nervous system myelinating cells,oligodendrocytes(Oh et al.,2018).There is a prevalence sexual with a ratio of three times more affected women than men.

关键词： myelin CXCR4

Dolomite apatite separation by amphoteric collector in presence of bacteria

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Journal of Central south University 2013年第6期20卷 1645-1652页

作者： Elmahdy Ahmed El-Mofty salah abdel-khalek Mohamed abdel-khalek Nagui El-MidanyAyman Central Metallurgical Research and Development Institute Mining Petroleum and Metallurgical Engineering DepartmentCairo University

Bioflotation represents one of the growing trends to enhance the selectivity of conventional flotation processes. It utilizes the micro-organisms to replace or to interact with the chemical reagents to increase the gap between surface properties of similar minerals and to enhance the separation selectivity. In this work, dolomite-phosphate separation was investigated using amphoteric collector （dodecyl-N-carboxyethyl-N-hyroxyethyl-imidazoline） in presence of bacteria. Two types of bacteria, Corynebacterium- diphtheriae-intermedius （CDI）, and Pseudomonas aeruginosa （PA）, were used. The collector-bacteria interaction was characterized by Fourier transform infra-red （FTIR）, frothing height and Zeta potential. The results show that the collector-bacteria interaction improves the flotation selectivity. Although, the PA positively affects the separation results, the CDI cannot lower the MgO to less than 1%. A phosphate content of 0.7% MgO and 31.77% P205 with a recovery of 68% at pH 11, 3.0 kg/t amphoteric collector, 4× 10^7 cells of PA is obtained.

关键词： dolomite phosphate amphoteric collector bacteria bio-flotation carbonate minerals

Rare earth oxides doped NiO/γ-Al_2O_3 catalyst for oxidative dehydrogenation of cyclohexane

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Journal of Rare Earths 2015年第6期33卷 611-618页

作者： Hany M.abdelD ayem M.Faiz Hesham s.abdel-samad salah A.Hassan Center of Research Excellence in Petroleum Refining & Petrochemicals (CoR E-PRP) King Fahd University of Petroleum & Minerals Chemistry Department College of Science King Faisal University Chemistry Department Faculty of Science Ain Shams University surface science Laboratory Physics Department King Fahd University of Petroleum &Minerals Department of Basic sciences and Technology Community College Taibah University

The effect of rare earth oxides （RE=Ce, La, Gd, and Dy） doping of alumina support in NiO/7-A1203 system was investi- gated on its catalytic performance in oxidative dehydrogenation （ODH） of cyclohexane. The physicochemical properties of various samples were followed up through N2 physisorption, temperature programmed reduction （H2-TPR）, X-ray diffraction （XRD）, X-ray photoelectron spectroscopy （XPs） and potentiometric acid-base titration techniques. In the parent NiO/y-A1203 catalyst, Ni species were found to be strongly interacted with alumina surface. Addition of rare earth dopants to ）＇-A1203 in the catalyst system affected the nickel-alumina interaction and resulted in significant modifications in the catalytic performances in the ODH reaction. The results re- vealed the beneficial role of both La203 and Gd2Os doping in enhancing the ODH catalytic activity and selectivity to cyclohexene. H2-TPR and XPs results indicated that majority of Ni species in NiO/La203 modified T-A1203 were more weakly interacted with La203 and alumina whereas both NiO like species and nickel aluminate were present on the surface. Doping with cerium or dyspro- sium increased the nickel-support interaction and led to a decrease in surface nickel concentration. In case of doping with Ce, surface concentration of cerium oxide was higher than those of the other RE oxides; the doped catalyst reached its steady state activity faster than the other catalysts. The acid-base results suggested that RE metals were interacted most likely with acidic surface hydroxyl groups. The degree of nickel-alumina interaction decreased in the following order： LaAI〉GdAI〉CeAI〉DyA1.

关键词： nickel oxide rare-earth oxides doping Ni-A1203 interaction surface acidity oxidative dehydrogenation cyclohexane rare earths