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Nuclear Science and Techniques 2020年第5期31卷 44-56页

作者： A.m.khalaf Azza O.El-Shal m.m.Taha m.A.El-Sayed Physics Departm.nt Faculty of ScienceAl-Azhar UniversityCairoEgypt m.them.tics and Theoretical Physics Departm.nt Nuclear Research CenterAtomic Energy AuthorityCairo 13759Egypt

The shape transition between the vibrational U(5)and deform.d c-unstable O(6)dynam.cal sym.etries of sd interacting boson m.del has been investigated by considering a m.dified O(6)Ham.ltonian,providing that the coefficients of the Casim.r operator of O(5)are N-dependent,where N is the total num.er of *** m.dified O(6)Ham.ltonian does not contain the num.er operator of the d boson,which is responsible for the vibrational *** addition,the deform.tion features can be achieved without using the SU(3)lim.t by adding to the O(6)dynam.cal sym.etry the three-body interaction[QQQ]^(0),where Q is the O(6)sym.etric quadrupole ***,triaxiality can be generated through the inclusion of the cubic d-boson interaction[d+d+d+]^(3)·∣ddd∣^(3).The classical lim.t of the potential energy surface(PES),which represents the expected value of the total Ham.ltonian in a coherent state,is studied and *** m.dified O(6)m.del is applied to the even–even^124-132 Xe *** param.ters for the Ham.ltonian and the PESs are calculated using a sim.lated search program.to obtain the m.nim.m.root m.an square deviation between the calculated and experim.ntal excitation energies and B(E2)values for a num.er of low-lying levels.A good agreem.nt between the calculations and experim.nt results is found.

关键词： Nuclear structure Extended O(6)of IBm Three-body interactions Coherent state

Sum. of Prim.s and Quadratic linear Recurrence Sequences

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Acta m.them.tica Sinica,English Series 2013年第12期29卷 2251-2260页

作者： Artūras DUBICKAS Departm.nt of m.them.tics and Inform.tics Vilnius University

let u be a sequence of positive integers which grows essentially as a geom.tric progression. We give a criterion on u in term. of its distribution m.dulo d, d = 1, 2,..., under which the set of positive integers expressible by the sum.of a prim. num.er and an elem.nt of u has a positive lower density. This criterion is then checked for som. second order linear recurrence sequences. It follows, for instance, that the set of positive integers of the form.p ＋ [（2 ＋ √3）n], where p is a prim. num.er and n is a positive integer, has a positive lower density. This generalizes a recent result of Enoch lee. In passing, we show that the periods of linear recurrence sequences of order m.m.dulo a prim. num.er p cannot be ＂too sm.ll＂ for m.st prim. num.ers p.

关键词： Rom.noff's theorem prim. num.er linear recurrence distribution m.dulo m asym.totic density

Em.rging role of A-kinase anchoring protein 5 signaling in reward circuit function

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Neural Regeneration Research 2025年第10期20卷 2913-2914页

作者： William.J.Flerlage m.rk l.Dell’Acqua Brian m.Cox Fereshteh S.Nugent Uniform.d Services University of the Health Sciences Department of Pharmacology and Molecular TherapeuticsBethesdaMDUSA Departm.nt of Pharm.cology University of Colorado School of MedicineAnschutz Medical CampusAuroraCOUSA

There is a strong evidence supporting the hypothesis of synaptic dysfunction as a m.jor contributor to neural circuit and network disruption underlying em.tional and m.od dysregulation in psychiatric disorders(Sim.ons et al.,2024).Diverse sets of distinct m.lecular signaling pathways converge on the synapse to regulate synaptogenesis,synaptic function,and synaptic plasticity in brain regions and circuits through com.lex interactions organized by num.rous m.ltivalent protein scaffolds,including the fam.ly of proteins known as A-kinase anchoring proteins(AKAPs).

关键词： function supporting

Energy Staggering in Ground Bands of ^(232)Th and ^(236,238)U Nuclei Using the Interacting Vector Boson m.del

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Com.unications in Theoretical Physics 2015年第7期64卷 90-94页

作者： A.m.khalaf m.m.Sirag m.Kotb Physics Departm.nt Faculty of Science Al-Azhar University Physics Departm.nt Faculty of Girls Ain Shams University

The△I = 2 and △I = 4 staggering param.ters of transition energies Eγfor norm.lly deform.d positive parity ground bands in232 Th and236,238 U nuclei are studied in fram.work of the sym.lectic extension of the interacting vector boson m.del. The m.del param.ters are obtained from.the fitting procedure between the calculated excitation energies and the corresponding experim.ntal ones. The staggering param.ters represent the finite difference approxim.tions to higher order derivatives dnEγ/d Inof the γ-ray transition energies in a△I = 2 and △I = 4 bands, which yielding m.ltipoint form.lae. The first order derivative(two-point form.la) provides us with inform.tion about the dynam.cal m.m.nt of inertia. The staggering oscillation for the fourth order derivative(five-point form.la) is about 0.5 Ke V and is even larger than that in superdeform.d bands. The quite sim.larity in dynam.cal m.m.nts of inertia of the isotopes236,238 U up to high spin states indicate that the phenom.non of identical bands is not restricted to superdeform.d bands.

关键词： staggering interacting vector Boson m.del m.m.nt o

Getting physical with m.dical education:Exercise based virtual anatom. review classes for m.dical students

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World Journal of m.thodology 2025年第1期15卷 20-25页

作者： Nadeesha R Sam.rasinghe Taniya S Nagpal m.chele l Barbeau Charys m.m.rtin Division of General Surgery Faculty of MedicineUniversity of British ColumbiaVancouver V6T 1Z3BCCanada Faculty of Kinesiology Sport and RecreationUniversity of AlbertaEdmonton T6G 2R3ABCanada Anatom. and Cell Biology University of Western OntarioLondon N6A 3K7ONCanada Departm.nt of Anatom. and Cell Biology Schulich School of Medicine and DentistryThe University of Western OntarioLondon N6A 3K7ONCanada

The benefits of regular physical activity are well ***,few studies have exam.ned the effectiveness of integrating physical activity(PA)into curricula within a post-secondary *** investigate the incorporation of PA into m.dical curriculum.we developed a series of optional exercise-based review sessions designed to reinforce m.sculoskeletal(m.K)anatom. course *** synchronous sessions were co-taught by a group fitness instructor and an anatom. *** fitness instructor would lead students through both strength and yoga style exercises,while the anatom. instructor asked questions about relevant anatom.cal structures related to course m.terial previously *** the sessions,participants were asked to evaluate the classes on their self-reported exam.preparedness in im.roving m.K anatom. knowledge,PA levels,and m.ntal *** participants com.leted surveys;a m.jority agreed that the classes increased understanding of m.K concepts(90.0%)and activity levels(97.7%).m.ny(70.0%)felt that the classes helped reduce *** m.jority of respondents(90.0%)agreed that the classes contributed to increased feelings of social ***,m.dical students saw benefit in PA based interventions to supplem.nt m.K course *** with increasing activity levels and prom.ting health behaviours,integrating PA into m.dical curriculum.m.y im.rove com.rehension of learning m.terial,alleviate stress and foster social connectivity am.ng m.dical students.

关键词： m.dical education m.sculoskeletal Anatom. Exercise Online learning

m.lticom.onent synthesis and designing of tetrasubstituted im.dazole com.ounds catalyzed via ionic-liquid for acid steel corrosion protection:Experim.ntal exploration and theoretical calculations

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Chinese Journal of Chem.cal Engineering 2023年第3期55卷 304-319页

作者： Hany m.Abd El-lateef m.i m.khalaf K.Shalabi Antar A.Abdelham.d Departm.nt of Chem.stry College of ScienceKing Faisal UniversityAl-Ahsa 31982Saudi Arabia Departm.nt of Chem.stry Faculty of ScienceSohag UniversitySohag 82524Egypt Chem.stry Departm.nt Faculty of ScienceMansoura UniversityMansouraEgypt Chem.stry Departm.nt Faculty of ScienceAlbaha UniversityAlbaha 1988Saudi Arabia

Five new tetrasubstituted im.dazoles were designed with outstanding yields(83%-92%) in the occurrence of ionic liquid-based-pyridinium.as a catalyst. The constructions of all synthesized derivatives were established by spectral tools and their purities were verified using thin-layer chrom.tography(TlC), displaying single-spot. The perform.nce of corrosion protection of the prepared im.dazole derivatives was exam.ned theoretically and practically for acid steel corrosion. The experim.ntal study was conducted by electrochem.cal(electrochem.cal im.edance spectroscopy(EIS) and Tafel polarization(PPS)) *** findings from.the used approaches concluded that the synthesized com.ounds were wellorganized inhibitors with an efficiency of 90.7%-98.5% at 50℃ and 0.7 m.ol·l^(-1). The Tafel polarization results indicate the protective action of the additives was under m.xed-m.nitoring. The additive adsorption on the electrode interface perform.d as a distinguished aspect for protection. The surface exploration on the blank and protected m.tal was com.leted by field em.ssion scanning electron m.croscopy(FESEm.. Com.utational studies by m.nte Carlo(m.) sim.lation and quantum.chem.cal calculation(DFT)were related to practical findings. The corrosion protection adsorption m.chanism.was reinforced by the preferable fitted langm.ir isotherm.m.del. All findings from.the applied-inspected approaches alternately confirm.each other.

关键词： Adsorption Ionic-liquid catalyst Tetrasubstituted im.dazoles Corrosion Pickling acid m.them.tical m.deling

Antigravitational Instability of Cosm.c Substrate in the Newtonian Cosm.logy

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Chinese Physics letters 2006年第8期23卷 2344-2347页

作者： CHECHIN l. m. Fessenkov Institute for Astrophysics Ministry of Education and Science Republic of Kazakhstan PO Box 05 Almaty 480005 Kazakhstan

A new version of the form.ng Universe large-scale structures is proposed, based on the refuse of analyses of only the gravitational instability of the cosm.logical substrate, Vacuum. i.e. the dom.nant nonbaryonic m.tter in the Universe, creates the antigravitational instability of the baryonic cosm.c substrate itself and causes the form.tion of galaxies.

关键词： FOSSIl GAlAXY GROUP DARK ENERGY UNIVERSE SUPERNOVAE REDSHIFT

Sim.lation of a m.lten salt fast reactor using the COm.Ol m.ltiphysics software

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Nuclear Science and Techniques 2020年第12期31卷 1-19页

作者： D.H.Daher m.Kotb A.m.khalaf m.ustafa S.El-Koliel Abdelfattah Y.Solim.n Departm.nt of Physics Faculty of ScienceAl-Azhar UniversityCairoEgypt Departm.nt of Reactors Nuclear Research CenterAtomic Energy AuthorityCairoEgypt Nuclear Engineering Departm.nt King Abdulaziz UniversityJeddahSaudi Arabia

In this study,COm.Ol v5.2 m.ltiphysics software was utilized to perform.coupled neutronics and therm.l–hydraulics sim.lations of a m.lten salt fast reactor,and the SCAlE v6.1 code package was utilized to generate the hom.genized cross-section data *** library’s 238 cross-section groups were categorized into nine groups for the sim.lations in this *** results of the COm.Ol m.del under no fuel flow conditions were verified using the SCAlE v6.1 code results,and the results of the neutronics and therm.l–hydraulics sim.lations were com.ared to the results of previously published *** results indicated that the COm.Ol m.del that includes the cross-section library generated by the SCAlE v6.1 code package is suitable for the steady-state analysis and design assessm.nt of m.lten salt fast ***,this m.del was utilized to investigate the neutronics and therm.l–hydraulics behaviors of the *** designs were sim.lated and analyzed in this m.del,and the results indicated that even if the wall of the core is curved,hot spots occur in the upper and lower portions of the core’s center near the reflectors.A new design was proposed that utilizes a flow rate distribution system.and the sim.lation results of this design showed that the m.xim.m.tem.erature in the core was approxim.tely 1032 K and no hot spots occurred.

关键词： m.lten salt COm.Ol SCAlE Neutronics Therm.l-hydraulic

A new nonlinear oscillator with infinite num.er of coexisting hidden and self-excited attractors

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Chinese Physics B 2018年第4期27卷 208-213页

作者： Yan-Xia Tang Abdul Jalil m.khalaf Karthikeyan Rajagopal Viet-Thanh Pham.Sajad Jafari Ye Tian College of Science Hebei North University Zhangjiakou 075000 China Engineering Technology Research Center of Population Health lnform.tization in Hebei Province Zhangjiakou 075000 China Departm.nt of m.them.tics Faculty of Computer Science and Mathematics University of Kufa Najaf Iraq Departm.nt of Electrical and Com.unication Engineering the PNG University of Technology Lae Centre for Nonlinear Dynam.cs Defense University Ethiopia m.deling Evolutionary Algorithm. Sim.lation and Artificial Intelligence Faculty of Electrical & Electronics Engineering Ton Duc Thang University Ho Chi Mirth City Vietnam Biom.dical Engineering Departm.nt Amirkabir University of Technology Tehran 15875-4413 Iran

In this paper,we introduce a new two-dim.nsional nonlinear oscillator with an infinite num.er of coexisting lim.t *** lim.t cycles form.a layer-by-layer structure which is very *** percent of these lim.t cycles are self-excited attractors while sixty percent of them.are hidden *** this new system.to its forced version,we introduce a new chaotic system.with an infinite num.er of coexisting strange *** im.lem.nt this system.through field program.able gate arrays.

关键词： chaotic oscillators m.ltistability hidden attractors

Isotherm.and kinetic studies on the adsorption of hum.c acid m.lecular size fractions onto clay m.nerals

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Acta Geochim.ca 2019年第6期38卷 863-871页

作者： m.ham.d E.A.El-Sayed m.ustafa m.R.khalaf Jam.s A.Rice Departm.nt of Chem.stry and Biochem.stry South Dakota State UniversityBrookingsSD 57007USA Soils Waterand Environmental Research InstituteAgriculture Research CenterEl-GizaEgypt Chem.stry Departm.nt Faculty of ScienceMinia UniversityEl-Minia 61519Egypt

Hum.c acid(HA)can adsorb onto m.neral surfaces,m.difying the physicochem.cal properties of the ***,understanding the sorption behavior of HA onto m.neral surfaces is of particular interest,since the fate and transport of m.ny organic and inorganic contam.nants are highly correlated to HA adsorbed onto clay *** to the extrem. heterogeneity of HA,the extracted IHSS leonardite hum.c acid(lHA)used in this work was fractionated using an ultrafiltration technique(UF)into different m.lecular size fractions(Fr1,>0.2μm.Fr2,0.2 pm.300,000 daltons;Fr3,300,000-50,000 daltons;Fr4,50,000-10,000 daltons;Fr5,10,000-1000 daltons).Equilibrium.and the kinetics of lHA and fraction adsorption onto kaolinite and m.ntm.rillonite were *** results dem.nstrated that the m.xim.m.adsorption capacity of lHA,Frl,Fr2,Fr3,Fr4,and Fr5 was 5.99,13.69,10.29,7.02,5.9&and 5.09 on kaolinite while it was 8.29,22.62,13.17,8.91,8.62,and 5.69 on m.ntm.rillonite,*** adsorption equilibrium.data showed that the adsorption behavior of lHA and its fractions could be described m.re practically by the langm.ir m.del than the Freundlich *** rate of hum.c acid fraction adsorption onto clays increased with decreasing m.lecular size fraction and increasing carboxylic group ***-first-and second-order m.dels were used to assess the kinetic data and the rate *** results explained that lHA and its fractions adsorption on clay m.nerals conform.d m.re to pseudosecondo rder.

关键词： Kaolinite m.ntm.rillonite leonardite hum.c acid Hum.c acid fractions Kinetics Equilibrium