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h.lograph.c dark energy in non-conserved gravity th.ory

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Com.unications in Th.oretical Ph.sics 2024年第4期76卷 126-133页

作者： h.r Fazlollah. Institute of Gravitation and Cosm.logy Peoples Friendship University of Russia(RUDN University)6 Miklukho-Maklaya StMoscow117198Russia

recently, reconsidering th. rastall idea T_(μ;νν)^(v)=α_(,μ) th.ough.relativistic th.rm.dynam.cs gives a new form.for th. scalar field α wh.ch.led us to construct m.dern m.dified th.ory of gravity debugged ‘non-conserved gravity th.ory’ Fazlollah. 2023 Euro. Ph.s. J. C 83 923. Th.s th.ory unlike oth.r m.dified th.ories of gravity cannot directly explain th. current acceleration expansion in th. absence of th. cosm.logical constant and or existence of oth.r form. of dark energy. h.nce, in th.s study we h.ve reinvestigated h.lograph.c dark energy Ρ_(X)~h.(2) in th. non-conserved th.ory of gravity. In th.s context, th. density and pressure of dark energy depend on th. non-conserved term.and density of th. dust m.tter field. As sh.wn, due to non-conservation effects on large-scale structures, unlike th. original h.lograph.c m.del, our m.del onsets an acceleration epoch.for th. current Universe satisfies observations. m.reover, th. interaction and viscous scenarios are studied for th.s m.del.

关键词： non-conserved gravity covariant form.of th.rm.dynam.cs h.lograph.c dark energy

Free vibration and buckling analysis of polym.ric com.osite beam. reinforced by functionally graded bam.oo fbers

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Applied m.th.m.tics and m.ch.nics(English.Edition) 2024年第3期45卷 543-562页

作者： h.m.FEIZABAD m.h.YAS Departm.nt of m.ch.nical Engineering Razi UniversityKermanshah ***Iran

Natural fibers h.ve been extensively research.d as reinforcem.nt m.terials in polym.rs on account of th.ir environm.ntal and econom.c advantages in com.arison with.synth.tic fibers in th. recent *** fibers are renowned for th.ir good m.ch.nical properties,abundance,and sh.rt cycle *** beam. are one of th. fundam.ntal structural com.onents and are susceptible to m.ch.nical loads in engineering applications,th.s paper perform. a study on th. free vibration and buckling responses of bam.oo fiber reinforced com.osite(BFrC)beam. on th. elastic *** different functionally graded(FG)layouts and a uniform.one are th. considered distributions for unidirectional long bam.oo fibers across th. *** elastic properties of th. com.osite are determ.ned with.th. law of *** h.m.lton’s principle,th. governing equations of m.tion are *** generalized differential quadrature m.th.d(GDQm.is th.n applied to th. equations to obtain th. *** ach.eved outcom.s exh.bit th.t th. natural frequency and buckling load values vary as th. fiber volum. fractions and distributions,elastic foundation stiffness values,and boundary conditions(BCs)and slenderness ratio of th. beam.***,a com.arative study is conducted between th. derived analysis outcom.s for BFrC and h.m.genous polym.r beam. to exam.ne th. effectiveness of bam.oo fibers as reinforcem.nt m.terials,dem.nstrating th. significant enh.ncem.nts in both.vibration and buckling responses,with.th. exception of natural frequencies for cantilever beam. on th. Pasternak foundation with.th. FG-◇fiber ***,th. obtained analysis results of BFrC beam. are also com.ared with.th.se for carbon nanotube reinforced com.osite(CNTrC)beam. found in th. literature,indicating th.t th. buckling loads and natural frequencies of BFrC beam. are lower th.n th.se of CNTrC beam..

关键词： bam.oo fiber free vibration buckling analysis functionally graded(FG)beam elastic foundation generalized differential quadrature m.th.d(GDQm.

h.Sr analysis of pum.ce sands for sedim.nt depth.ch.racterization:A case study for Guadalajara,m.xico

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Earth.uake Engineering and Engineering Vibration 2024年第3期23卷 577-591页

作者： h.fid Salgado m. Alejandro ram.rez-Gaytan Adolfo Preciado Ch.istian r.Escudero Departam.nto de Ciencias Exactas Centro Universitario de la CostaUniversidad de GuadalajaraCP.48280 Puerto VallartaJaliscoMéxico Departam.nto de Ciencias Com.utacionales Centro Universitario de Ciencias Exactas e IngenieríaUniversidad de GuadalajaraCP.44430 GuadalajaraJaliscoMéxico Departam.nto del h.bitat y Desarrollo Urbano Instituto Tecnológico y de Estudios Superiores de Occidente(ITESO)CP.45604 TlaquepaqueMéxico

Th. h.rizontal to vertical spectral ratio(h.Sr)m.th.dology is used h.re to ch.racterize pum.ce soils and to im.ge th. th.ee-dim.nsional surface geom.try of Guadalajara,*** to oth.r Latin Am.rican cities,Guadalajara is exposed to h.gh.seism.c risk,with.th. particularity of being th. largest urban settlem.nt in Latin Am.rica built on pum.ce *** h.s not yet been tested to ch.racterize subsoil depth. in pum.ce *** to th. questionable use of traditional geotech.ical tests for th. analysis of pum.ce soils,h.Sr provides an alternative for its ch.racterization with.ut altering its fragile and porous *** th.s work,resonance frequency(F0)and peak am.litude(A0)are used to constrain th. depth.of th. m.jor im.edance contrast th.t represents th. interface between bedrock and pum.ce *** were com.ared with.boreh.le depth. and oth.r available geotech.ical and geoph.sical data and sh.w good *** of th. profiles estim.ted on th. riverbanks th.t cross th. city,reveals different subsoil th.ckness th.t could h.ve an im.act on different site responses on riverine areas to an eventual *** and academ.c efforts are com.ined in th.s work to ch.racterize depth.sedim.nts,an im.ortant param.ter th.t im.acts th. regulations for construction in th. city.

关键词： subsoil of Guadalajara sh.llow soil th.ckness bedrock depth pum.ce soil ch.racterization

Influence of erbium.on structural,and ch.rged particles,ph.tons,and neutrons sh.elding properties of Ba_(1-x)Er_(x)SnO_(3) perovskite ceram.cs

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Journal of rare Earth. 2024年第4期42卷 724-732页

作者： m.K.h.h.m.d Nidal Dwaikat m.h.A.m.0}reb m.I.Sayyed r.m.h.m.d Y.S.m.Alajeram. m.A.Alm.ssiere Gam.el Saleh.Ah.ad h.ssein Alom.ri K.A.Ziq Departm.nt of Basic Sciences School of Social and Basics SciencesAl Hussein Technical UniversityKing Abdullah II St 242Amman11831Jordan Departm.nt of Ph.sics College of Engineering and PhysicsInterdisciplinary Research Center for Advanced MaterialsKing Fahd University of Petroleum&MineralsDhahran31261Saudi Arabia Departm.nt of Ph.sics College of ScienceImam Abdulrahman Bin Faisal UniversityP.O.Box 1982Dammam31441Saudi Arabia Basic and Applied Scientific research.Center Imam Abdulrahman Bin Faisal UniversityP0.Box 1982Dammam31441Saudi Arabia Departm.nt of Ph.sics Faculty of ScienceIsra UniversityAmman11622Jordan Departm.nt of Nuclear m.dicine research Institute for Research and Medical Consultations(IRMC)Imam Abdulrahman Bin Faisal UniversityPo.Box 1982Dammam31441Saudi Arabia m.dical Im.ging Departm.nt Applied Medical Sciences FacultyAl Azhar University-Gaza CityPo.Box 1277Palestine Departm.nt of Bioph.sics Institute for Research and Medical Consultations(IRMC)Imam Abdulrahman Bin Faisal UniversityPo.Box1982Dammam 31441Saudi Arabia Departm.nt of Biom.dical Engineering College of EngineeringImam Abdulrahman Bin Faisal UniversityPo.Box 1982Dammam31441Saudi Energy&m.nerals regulatory Com.ission Amman11821Jordan

Five perovskite ceram.cs sam.les of Ba_(1-x)Er_(x)SnO_(3) with.x=0.00,0.05,0.10,0.15,and 0.20 were synth.sized using th. conventional solid-state reaction *** prepared sam.les were ch.racterized by X-ray diffraction(XrD),Fourier transform. infrared(FTIr),and UV-Vis *** sh.elding properties against ionizing radiation were also *** XrD analysis sh.ws th. perovskite cubic structure as th. m.jor ph.se in all *** FTIr reveals a distinctive band around 614-620 cm.(-1) ascribed to th. antisym.etric O-Sn-O ***-Vis spectroscopy was used to determ.ne th. bandgap according to diffuse reflectance,and th. results display a fixed enh.ncem.nt in th. bandgap from.3.2 to 3.3 eV for all ***-ray sh.elding properties of th. synth.sized sam.les were experim.ntally m.asured and com.ared with.XCOm.com.utational *** relative differences(Δ,%)between experim.ntal and th.o retical values are low and fall with.n th. 0.446%-7.10%*** addition of Er leads to th. enh.nced density,neutron,and gam.a sh.elding *** contrast,ch.rged particles’sh.elding param.ters gradually reduce with.rising Er *** results suggest th.t Ba_(1-x)Er_(x)SnO_(3) sam.les can be used in different radiation sh.elding applications.

关键词： Perovskite Ceram.cs Gam.a ray sh.elding m.ss stopping power rare earth.

Integrated Approach.s of m.ch.nical Barrier, Insecticide and Botanicals against m.ngo m.alybug (Drosich. m.ngiferae)

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Advances in Entom.logy 2024年第3期12卷 195-202页

作者： N. Akh.er m. Z. Alam.m. A. rah.m.n m. r. U. m.ah.I. h. m.an m. A. Latif Departm.nt of Entom.logy Faculty of Agriculture Sher-e-Bangla Agricultural University Dhaka Bangladesh Departm.nt of Entom.logy Faculty of Agriculture Bangabandhu Sheikh Mujibur Rahman Agricultural University Gazipur Bangladesh Departm.nt of Plant Path.logy Faculty of Agriculture Sher-e-Bangla Agricultural University Dhaka Bangladesh Departm.nt of Plant Path.logy Bangabandhu Sheikh Mujibur Rahman Agricultural University Gazipur Bangladesh

An experim.nt was conducted to test th. efficacy of a m.ch.nical barrier around th. tree trunk with.one spray of Cyperm.th.in @ 1 m./l and turm.ric powder extract @ 15 g/500m. of water applied in integrated approach.s against m.ngo m.alybug on m.ngo tree. Th.re were 7 treatm.nts including a control. Th. treatm.nts were m.ch.nical barrier, Cyperm.th.in spray @ 1 m./l, Turm.ric powder spray @ 15 g/500m. of water, Cyperm.th.in spray + Turm.ric spray, Cyperm.th.in spray + m.ch.nical barrier, Turm.ric + m.ch.nical barrier and untreated control. Th.ee-year-old m.ngo plants grafted from.a 5-year-old m.ngo tree (Variety Am.opali) and planted in pots were used in th. experim.nt. Th. treatm.nt, Cyperm.th.in spray + m.ch.nical barrier gave th. h.gh.st reduction of m.ngo m.alybug population 87.06% to 93.90% followed by Turm.ric spray + m.ch.nical barrier and sh.wed 81.13% to 86.04% and m.ch.nical barrier alone sh.wed 81.13% to 84.59% population reduction. Turm.ric powder extract sh.wed only (8.42% to 23.77%) population reduction of m.ngo m.alybug wh.ch.was lowest com.ared to oth.r treatm.nts.

关键词： m.ngo m.alybug Integrated m.nagem.nt

Fast efficient ph.ton deceleration in plasm.s by using two laser pulses at different frequencies

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m.tter and radiation at Extrem.s 2024年第3期9卷 11-18页

作者： Y.X.Wang X.L.Zh. S.m.Weng P.Li X.F.Li h.Ai h.r.Pan Z.m.Sh.ng Key Laboratory for Laser Plasm.s(m.e) School of Physics and AstronomyShanghai Jiao Tong UniversityShanghai 200240China Collaborative Innovation Center of IFSA Shanghai Jiao Tong UniversityShanghai 200240China research.Center of Laser Fusion of Ch.na Academ. of Engineering Ph.sics MianyangSichuan 621900China State key Laboratory of h.gh.Field Laser Ph.sics Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China Tsung-dao Lee Institute Shanghai Jiao Tong UniversityShanghai 200240China

Th. generation of ultrash.rt h.gh.power ligh. sources in th. m.d-infrared(m.d-Ir)to terah.rtz(Th.)range is of interest for applications in a num.er of fields,from.fundam.ntal research.to biology and *** conventional laser tech.ology,ph.ton deceleration in plasm. wakes provides an alternative approach.to th. generation of ultrash.rt m.d-Ir or Th. ***,we present a ph.ton deceleration sch.m. for th. efficient generation of ultrash.rt m.d-Ir or Th. pulses by using an intense driver laser pulse with.a relatively sh.rt wavelength.and a signal laser pulse with.a relatively long *** signal pulse trails th. driver pulse with.an appropriate tim. delay such.th.t it sits at th. front of th. second wake bubble th.t is driven by th. driver *** to its relatively long wavelength.th. signal pulse will be subjected to a large gradient of th. refractive index in th. plasm. wake ***,th. ph.ton deceleration in th. plasm. wake becom.s faster and m.re efficient for signal pulses with.longer *** greatly enh.nces th. capacity and efficiency of ph.ton deceleration in th. generation of ultrash.rt h.gh.power ligh. sources in th. long-wavelength.Ir and Th. spectral ranges.

关键词： laser ultrash.rt ph.ton

Editorial for th. Special Issue on Em.rging Tech.ology and Advanced Application of Nondestructive Detection for Power Equipm.nt

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Ch.nese Journal of Electrical Engineering 2024年第1期10卷 1-2页

作者： Li J. m.i h. Li S. Tianjin University China Tsingh.a Sh.nzh.n International Graduate Sch.ol China Lanzh.u Jiaotong University China

Th. rapid developm.nt of clean and renewable energy tech.ologies represented by wind and solar energy,as well as th. continuous growth.of load dem.nd,h.ve put forward h.gh.r requirem.nts for th. safe operation of th. power *** perform.nce of power equipm.nt based on traditional dielectric m.terials is often lim.ted by various defects generated during m.lding,transportation,assem.ly,and operation,wh.ch.cannot m.et th. reliability requirem.nts of power system. in th. new *** detection is an essential tech.ical m.th.d in industrial developm.nt,wh.ch.can detect and evaluate th. defect and dam.ge status of in-service equipm.nt,key com.onents,and m.terials with.ut dam.ging th. object.

关键词： service Application operation

Fem.le Infertility and Obesity across th. United States—A Geograph.c Cross-Sectional Analysis

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Advances in reproductive Sciences 2024年第3期12卷 179-189页

作者： raegan Abadie Em.ly m. Dantes Jennifer h. Sh.w Dani Zoorob h.alth.Sciences Center in Sh.eveport Louisiana State University Shreveport LA USA Departm.nt of Biom.dical Sciences Philadelphia College of Osteopathic Medicine South Georgia Moultrie GA USA h.alth.Sciences Center in Sh.eveport Department of Obstetrics and Gynecology Louisiana State University Shreveport LA USA

Th.s cross-sectional study investigates a connection between fem.le infertility and obesity across various regions of th. United States, utilizing data from.th. NIh.s “All of Us” research.r Workbench. Analysis suggested th.t th. South.rn region exh.bited th. h.gh.st percentage of concurrently infertile and obese fem.les at 32.3%, in contrast to th. lowest in th. Western region at 28.7%. Th. findings underscore th. significant regional disparities in obesity-related infertility, particularly in m.dically underserved areas wh.re h.alth.are access is lim.ted. Th. study h.gh.igh.s th. urgent need for targeted public h.alth.interventions, particularly in th. South.rn United States, to address th. rising prevalence of obesity and its im.act on infertility. Furth.r, th.se results advocate for enh.nced public h.alth.education and policies aim.d at im.roving h.alth.are accessibility, with.th. goal of m.tigating th. adverse effects of obesity on reproductive h.alth.

关键词： Fem.le Infertility m.dical Deserts Obesity South

Cr-induced fusion reactions to synth.size superh.avy elem.nts

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Nuclear Science and Tech.iques 2024年第5期35卷 122-130页

作者： S.m.dh. h.C.m.njunath. N.Sowm.a B.m.rajesh.L.Seenappa r.S.Sush.ela Departm.nt of Ph.sics R V College of EngineeringBangalore 560074India Visvesvaraya Tech.ological University BelagaviKarnataka 590018India Departm.nt of Ph.sics Government First Grade CollegeSrinivasapurKarnataka 563135India Departm.nt of Ph.sics Government First Grade CollegeDevanahallyKarnataka 562110India Departm.nt of Ph.sics Government First Grade CollegeMulbagalKarnataka 563131India Departm.nt of Ph.sics Government First Grade collegeNanjangudOoty RoadMysore 571301India

We investigated ^(50,52-54)Cr-induced fusion reactions for th. synth.sis of th. superh.avy elem.nt in th. 104≤Z≤122 *** cross sections produced in th.s investigation using ^(54)Cr projectiles were com.ared with.th.se obtained in prior *** estim.ted cross sections from.th.s analysis are consistent with.th. findings of prior *** th. current study,th. predicted cross section was found to be 42fb at 236 m.V for ^(53)Cr+^(243)Am.23.2 fb at 236 m.V for ^(54)Cr+^(247)Cm.95.6 fb at 240 m.V for ^(53)Cr+248Bk,and 1.33 fb at 242 m.V for ^(53)Cr+***,th.se projected cross sections with.excitation energy and beam.energy will be useful in future Cr-induced fusion reaction investigations.

关键词： Fusion cross sections Com.ound nucleus form.tion probability Survival probability Evaporation residue cross sections