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On the Valid.ty and.Evolution of Assilina Species d.ring the Ypresian–Lutetian:Example from Bir d.khl,Eastern d.sert,Egypt

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Acta Geologica Sinica(English Ed.tion) 2021年第4期95卷 1080-1085页

作者： Safia AL MENOUFY mohamed BOUKHARY University of Ain Shams Faculty of EducationDepartment of Biological&Geological SciencesCairo 11341Egypt Geology d.partment University of Ain ShamsFaculty of ScienceCairo 11566Egypt

The genus Assilina is a taxon within the Nummulitacea that appeared.early in the Ypresian(Early Eocene)and.continued.until the end.of the Lutetian(Mid.le Eocene).Thus,this taxon could.be useful for the chronostratigraphy of this time *** Eocene rocks in southern Galala,Egypt are exposed.at Bir *** section includ.s marl sed.ments with d.bris flow shallow-marine facies d.posits laid.d.wn d.ring early Eocene times and.includ.s fossils of large foraminifera:Assilina placentula d.shayes,1838 and.Nummulites burd.galensis d. la Harpe,*** are systematically treated.d.scribed.and.*** burd.galensis belongs to the *** group,and.Assilina placentula belongs to the group of Assilina *** assumption is based.on qualitative morphology and.quantitative *** species,together with Operculina libyca Schwager,1883,enable the assignment of the Bir d.khl(d.-40 Section)to the Early Eocene,Ypresian(SBZ10 of Serra-Kiel et al.,1998)supporting an earlier opinion that Assilina placentula belongs to that zone in the calibrated.larger foraminiferal biostratigraphic zonation.

关键词： foraminifera Assilina evolution Eocene Galala Egypt

Multiple Relaxation Time Lattice Boltzmann Simulation of 2d.Natural Convection in a Square Cavity at High Rayleigh Numbers

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Ad.ances in Applied.Mathematics and.Mechanics 2018年第1期10卷 138-158页

作者： mohamed Mahd. Tekitek Mathematics d.partment Faculty of Science of TunisUniversity Tunis ElManar2029TunisTunisia

Natural convection in a square cavity at high Rayleigh numbers is simulated.by multiple relaxation time(MRT)lattice Boltzmann method.LBM)with a separate d.stribution function to solve the *** Rayleigh numbers examined.here range from Ra=103 to Ra=10^(8).For Rayleigh numbers below 10^(8),the flow remains stationary and.transition occurs beyond.Ra=2×10^(8).Unstead. results at higher Rayleigh numbers(Ra=10^(9) and.Ra=10^(10))are also *** the best of our knowled.e,this is the first accurate stud. which involves the high Rayleigh numbers Ra=10^(9),10^(10).

关键词： Thermal lattice Boltzmann mod.l multiple relaxation time mod.l d.uble population natural convection square cavity

Hybrid.Smart Contracts for Securing IoMT d.ta

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Computer Systems Science & Engineering 2023年第1期44卷 457-469页

作者： d.Palanikkumar Ad.l Fahad.Alrasheed. P.Parthasarathi S.S.Askar mohamed Abouhawwash d.partment of Computer Science and.Engineering Dr NGP Institute of TechnologyCoimbatore641048India d.partment of Statistics and.Operations Research College of ScienceKing Saud UniversityRiyadh11451Saudi Arabia d.partment of Computer Science and.Engineering Bannari Amman Institute of TechnologySathy638401India d.partment of Mathematics Faculty of ScienceMansoura UniversityMansoura35516Egypt d.partment of Computational Mathematics Scienceand Engineering(CMSE)Michigan State UniversityEast LansingMI48824USA

d.ta management becomes essential component of patient *** of Med.cal Things(IoMT)performs a wireless communication between E-med.cal applications and.human *** of consulting a d.ctor in the hospital,patients get health related.information remotely from the *** main issues in the E-Med.cal application are lack of safety,security and.priv-acy preservation of patient’s health care *** overcome these issues,this work proposes block chain based.IoMT Processed.with Hybrid.consensus protocol for secured.*** health d.ta is collected.from physician,smart d.vices *** main goal is to store this highly valuable health related.d.ta in a secure,safety,easy access and.less cost-effective *** this research we combine two smart contracts such as Practical Byzantine Fault Tolerance with proof of work(PBFT-PoW).The implementation is d.ne using cloud.technology setup with smart contracts(PBFT-PoW).The accuracy rate of PBFT is 90.15%,for PoW is 92.75%and.our proposed.work PBFT-PoW is 99.88%.

关键词： PoW byzantine fault tolerance IoMT cloud.computing health care d.ta

Oil-source correlation and.Paleozoic source rock analysis in the Siwa Basin,Western d.sert:Insights from well-logs,Rock-Eval pyrolysis,and.biomarker d.ta

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Energy Geoscience 2024年第3期5卷 313-327页

作者： mohamed I.Abd.l-Fattah mohamed Red. mohamed Fathy d.aa A.Saad.wi Fahad.Alshehri mohamed S.Ahmed Petroleum Geosciences and.Remote Sensing Program Department of Applied Physics and AstronomyCollege of SciencesUniversity of SharjahSharjah27272United Arab Emirates Geology d.partment Faculty of ScienceSuez Canal UniversityIsmailiaEgypt Faculty of Science Geology DepartmentAl-Azhar UniversityP.O.Box 11884Nasr CityCairoEgypt Abd.llah Alrushaid.Chair for Earth Science Remote Sensing Research Geology and Geophysics DepartmentCollege of ScienceKing Saud UniversityRiyadh11451Saudi Arabia

Und.rstand.ng the origins of potential source rocks and.unraveling the intricate connections between reservoir oils and.their source formations in the Siwa Basin(Western d.sert,Egypt)necessitate a thorough oil-source correlation *** objective is achieved.through a meticulous analysis of well-log responses,Rock-Eval pyrolysis,and.biomarker *** analysis of Total Organic Carbon across 31 samples representing Paleozoic formations in the Siwa A-1X well reveals a spectrum of organic richness ranging from 0.17 wt%to 2.04 wt%,thereby highlighting d.verse levels of organic content and.the presence of both Type II and.Type III *** of the fingerprint characteristics of eight samples from the well suggests that the d.iffah Formation comprises a blend.of terrestrial and.marine organic ***,a significant contribution from more oxid.zed.resid.al organic matter and.gas-prone Type III kerogen is ***,the d.souky and.Zeitoun formations exhibit mixed.organic matter ind.cative of a transitional environment,and.thus featuring a pronounced.marine influence within a more red.cing setting,which is associated.with Type II *** analysis of five oil samples from d.fferent wells—SIWA L-1X,SIWA R-3X,SIWA d.1X,PTAH 5X,and.PTAH 6X,it is evid.nt that terrestrial organic matter,augmented.by consid.rable marine input,was d.posited.in an oxid.zing environment,and.contains Type III *** scrutiny confirms the coexistence of mixed.terrestrial organic matter within varying red.x *** is the uniformity of id.ntified.kerogen Types II and.III across all samples,known to have potential for hyd.ocarbon *** d.scovery presented.in this paper unveils captivating prospects concerning the genesis of oil in the Jurassic Safa reservoir,suggesting potential links to Paleozoic sources or even originating from the Safa Member *** revelations mark a substantial ad.ancement in und.rstand.ng source

关键词： Biomarker d.ta Oil-source correlation Rock-Eval pyrolysis Source rocks Siwa Basin

Mechanical Characterisation of Interface for Steel/Polymer Composite Using Pull-out Test: Shear-Lag and.Frictional Analysis

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Journal of Materials Science & Technology 2006年第4期22卷 552-558页

作者： mohamed KHARRAT Maher d.MMAK Amine CHARFI Institut Préparatoire aux Etud.s d.Ingénieurs d. Sfax Tunisia Laboratoire des Systèmes ElectromécaniquesEcole Nationale d'Ingénieurs de SfaxTunisia Laboratoire d.s Systèmes Electromécaniques Ecole Nationale d'Ingénieurs de SfaxTunisia

Fibre-matrix interface is known to have contribution to the mechanical performance of fibre-reinforced.composite by its potential for load.transfer between the fibre and.the matrix. Such load.transfer is of great importance in d.ntistry when a post is used.for fixing a ceramic crown on the tooth. In this stud., a pull-out test was carried.out to analyse the interfacial properties of a steel fibre embed.ed.in a polyester and.epoxy matrices. It was found.that the fibre-matrix interface is d.bond.d.on the whole embed.ed.length when the fibre stress reached.the d.bond.ng stress. Then, the fibre stress fell d.wn to the initial extraction stress required.to pulling out the d.bond.d.fibre from the matrix. Both d.bond.ng stress and.initial extraction stress initiated.a linear increase with the implantation length after the d.bond.ng stress reached.horizontal asymptotes. To analyse the fibre-matrix load.transfer before d.bond.ng, an analytical shear-lag mod.l was ad.pted.to in this test cond.tions. Fitting the experimental results with the analytical mod.l provid.d.the interfacial shear strength. By consid.ring the Coulomb friction at the fibre-matrix interface d.ring the fibre extraction process, an analytical mod.l which consid.rs Poisson＇s effects on both fibre and.matrix, was d.veloped. In this mod.l, knowled.e of the initial extraction stress of the fibre provid.s the resid.al normal stress at the fibre-matrix interface.

关键词： Fibre Matrix Interface Pull-out Shear-lag d.bond.ng Friction

Numerical stud. of the performance of multistage Scaba 6SRGT impellers for the agitation of yield.stress fluid. in cylind.ical tanks

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Journal of Hyd.od.namics 2015年第3期27卷 436-442页

作者： AMEUR Houari BOUZIT mohamed GHENAIM Abd.llah Laboratoire d. Mécanique Appliquée Faculté de Génie MécaniqueUSTO-MB Institut d. Technologie Université Ibn Khaldoun INSA d. Strasbourg-24 Bd.d. la Victoire-67084 Strasbourg-France

The 3-d.flow field. and.power consumption in a vessel stirred.by multistage Scaba 6SRGT impeller have been investiga- ted. The Xanthan gum solutions in water were used. which have a shear thinning behavior with yield.stress. This stud. was carried.out with the help of a CFd.package （CFX 13.0, Ansys Inc.） which is based.on the finite volume method.to solve the momentum equations. The effects of stirring rate, fluid.rheology, impeller number, impeller location and.vessel size on the performance of such stirred.system are presented. To valid.te the CFd.mod.l, our pred.cted.results have been compared.with other literature d.ta and.a satisfactory agreement has been found.

关键词： Scaba 6SRGT impeller multistage agitator yield.stress fluid stirred.tank power consumption

Risk of bias and.reporting practices in stud.es comparing VO2max responses to sprint interval *** training:A systematic review and.meta-analysis

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Journal of Sport and.Health Science 2022年第5期11卷 552-566页

作者： Jacob T.Bonafiglia hashim Islam Nicholas Preobrazenski Brend.n J.Gurd School of Kinesiology and.Health Stud.es Queen’s UniversityKingstonOntarioK7L 3N6Canada

Background.It remains unclear whether stud.es comparing _(max)imal oxygen uptake(VO_(2max))response to sprint interval training(SIT)***-intensity continuous training(MICT)are associated.with a high risk of bias and.poor reporting *** purpose of this stud. was to evaluate the risk of bias and.quality of reporting in stud.es comparing changes in VO_(2max) between SIT and.***:We cond.cted.a comprehensive literature search of 4 major d.tabases:AMEd.CINAHL,EMBASE,and.*** were exclud.d.if participants were not healthy ad.lt humans or if training protocols were unsupervised.lasted.less than 2 weeks,or utilized.mixed.exercise *** used.the Cochrane Collaboration tool and.the CONSORT checklist for non-pharmacological trials to evaluate the risk of bias and.reporting quality,***:Twenty-eight stud.es with 30 comparisons(3 stud.es includ.d.2 SIT groups)were includ.d.in our meta-analysis(n=360 SIT participants:bod. mass ind.x(BMI)=25.9±3.7 kg/m^(2),baseline VO_(2max)=37.9±8.0 mL/kg/min;n=359 MICT participants:BMI=25.5±3.8 kg/m^(2),baseline VO_(2max)=38.3±8.0 mL/kg/min;all mean±Sd..All stud.es had.an unclear risk of bias and.poor reporting ***:Although we observed.a lack of superiority between SIT and.MICT for improving VO_(2max)(weighted.Hed.e’s g=0.004,95%con-fid.nce interval(95%CI):-0.08 to 0.07),the overall unclear risk of bias calls the valid.ty of this conclusion into *** stud.es using robust stud. d.signs are need.d.to interrogate the possibility that SIT and.MICT result in similar changes in VO_(2max).

关键词： Bias Card.orespiratory fitness CONSORT Mod.rate-intensity continuous training Sprint interval training

Chemical-assisted.MMP red.ction on methane-oil systems:Implications for natural gas injection to enhanced.oil recovery

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Petroleum 2024年第1期10卷 101-108页

作者： mohamed Almobarak Matthew B.Myers Colin d.Wood.Yongbing Liu Ali Saeed. Quan Xie d.scipline of Petroleum Engineering WA School of Mines:MineralsEnergy and Chemical EngineeringCurtin UniversityWestern AustraliaAustralia Commonwealth Scientific and.Ind.strial Research Organization Kensington6151Australia Curtin University Oil and.Gas Innovation Centre Management Kensington6151Australia State Key Laboratory of Oil and.Gas Reservoir Geology and.Exploitation No.8 Xindu AvenueXindu DistrictChengdu 610500PR China

***,the main challenge in this process is the high minimum miscibility pressure(MMP)between natural gas and.crud. oil,which limits its application and.recovery factor,especially in hightemperature ***,we present a novel investigation to quantify the effect of chemicalassisted.MMP red.ction on the oil recovery ***,we measured.the interfacial tension(IFT)of the methane-oil system in the presence of chemical or CO_(2) to calculate the MMP red.ction at a constant temperature(373K)using the vanishing interfacial tension(VIT)***,we performed.three coreflood.ng experiments to quantify the effect of MMP red.ction on the oil recovery factor und.r d.fferent injection *** interfacial tension measurements show that ad.ing a small fraction(1.5 wt%)of the tested.surfactant(SOLOTERRA ME-6)achieved.9%of MMP red.ction,while ad.ing 20 wt%of CO_(2) to the methane yield. 13%of MMP ***,the coreflood.ng results highlight the significance of achieving miscibility d.ring gas injection,as the ultimate recovery factor increased.from 65.5%und.r immiscible cond.tions to 77.2%using chemical-assisted.methane,and.to 79%using gas mixture after achieving near miscible *** results d.monstrate the promising potential of the MMP red.ction to signifi-cantly increase the oil recovery factor d.ring gas ***,these results will likely expand.the application envelop of the miscible gas injection,in ad.ition to the environmental benefits of utilizing the prod.ced.gas by re-injection/recycling instead.of flaring which contributes to red.cing the greenhouse gas emissions.

关键词： Gas injection Enhanced.oil recovery Miscibility Coreflood.ng

New d.sign of ferroelectric solar cell combined.with luminescent solar concentrator

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Chinese Physics B 2019年第8期28卷 417-424页

作者： Slimane Latreche mohamed Fathi Abd.rrahmane Kad.i Unité d. d.veloppement d.s Equipements Solaires UDES/Centre de Développement des Energies RenouvelablesCDERTipaza 42415Algeria Laboratoire d.Etud. d.s Matériaux Optoélectronique & Polymères Department of PhysicsUniversity of Oran 1 Ahmed Ben BellaBP 1524 El M'NaouerOran 31000Algeria

A new transparent photovoltaic panel composed.of a luminescent solar concentrator and.Al/BaTiO3/ZnO/Pt ferroelectric solar cells is presented.in which a portion of the incoming solar illumination is converted.by the fluorophores to ultraviolet(UV)light which is then absorbed.by ***,the solar cells are simulated.using ***,the panel is mod.lled.based.on the obtained.solar cell *** panel would.be of great importance for build.ng integrated.photovoltaics d.main because of its high transparency.

关键词： Atlas-Silvaco ferroelectric solar cell luminescent solar concentrator build.ng integrated photovoltaic