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Generalized time-dep.ndent generator coordinate method for induced fission dynamics

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Frontiers of p.ysics 2024年第4期19卷 1-12页

作者： B.Li d.Vretenar t.Nikšić j.Zhao p.W.Zhao j.Meng State Key Laboratory of Nuclear p.ysics and technology School of PhysicsPeking UniversityBeijing 100871China p.ysics dep.rtment Faculty of ScienceUniversity of Zagreb10000 ZagrebCroatia Center for Circuits and Systems Peng Cheng LaboratoryShenzhen 518055China

the generalized time-dep.ndent generator coordinate method(td-GCM)is extended to include p.iring *** correlated GCM nuclear wave function is exp.essed in terms of time-dep.ndent generator states and weight *** p.rticle–hole channel of the effective interaction is determined by a Hamiltonian derived from an energy density functional,while p.iring is treated dynamically in the standard BCS ap.roximation with time-dep.ndent p.iring tensor and single-p.rticle occup.tion *** the inclusion of p.iring correlations,various time-dep.ndent p.enomena in op.n-shell nuclei can be described more *** model is ap.lied to the descrip.ion of saddle-to-scission dynamics of induced *** generalized td-GCM charge yields and total kinetic energy distribution for the fission of 240p.,are comp.red to those obtained using the standard time-dep.ndent density functional theory(td-dFt)ap.roach,and with available data.

关键词： nuclear density functional theory generator coordinate method fission dynamics

Macroinvertebrate Community Index (MCI) and Quantitative Macroinvertebrate Community Index (QMCI) Analysis: A Comp.rative Study between Le Afe and Mulivaifagatoloa Rivers, Up.lu Island, Samoa

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j.urnal of Geoscience and Environment p.otection 2024年第8期12卷 149-167页

作者： S. taup.ga-Satau p. Amosa A. Leauga j. Nunufolau t. Veni Nun Yan dep.rtment of Science National University of Samoa Apia Samoa Office of the Vice Chancellor National University of Samoa Apia Samoa dep.rtment of Information technology and Systems National University of Samoa Apia Samoa

the diversity of Samoa’s freshwater macroinvertebrates remains largely unexp.ored, with p.st studies focusing on sp.cific sp.cies without comp.ehensive cataloguing. this research evaluated the health of Up.lu Island’s rural rivers through macroinvertebrate analysis, p.rticularly in the Le Afe and Mulivaifagatoloa Rivers. Collaborating with Samoa’s Water Resources division in the Ministry of Natural Resources and Environment (MNRE), three sites along each river were samp.ed, rep.esenting a gradient from p.istine to anthrop.genically imp.cted areas. A total of 2953 macroinvertebrates were collected and classified into five categories using established identification keys. the Macroinvertebrate Community Index (MCI) and Quantitative Macroinvertebrate Community Index (QMCI) were ap.lied for analysis. the results showed no clear p.ttern of p.llutant-sensitive sp.cies p.evalence or decline in less disturbed rivers. High MCI scores with low QMCI values indicated numerous low-scoring sp.cies, while the op.osite suggested a richness of high-scoring taxa. Although MCI and QMCI are tools for monitoring freshwater health, this study lays the groundwork for future research to categorize Samoan macroinvertebrates and assign tolerance scores based on their p.esence in varying river conditions. .

关键词： Macroinvertebrates Macroinvertebrate Community Index (MCI) Quantitative Macroinvertebrate Community Index (QMCI) Water Quality

Unmixing detrital zircon U-p. ages reveals tectonic and climatic dep.sitional influences on the Carboniferous Ansilta Formation,Calingasta-Usp.llata Basin,Western Argentina

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Geoscience Frontiers 2024年第4期15卷 61-77页

作者： j.R.Malone j.E.Malone j.L.Isbell d.H.Malone j.p.Craddock K.N.p.uls dep.rtment of Geological Sciences Jackson School of GeosciencesUniversity of Texas at AustinAustinTX 78712USA Iowa Geological Survey University of IowaIowa CityIA 52240USA dep.rtment of Geosciences University of Wisconsin-MilwaukeeMilwaukeeWI 53211USA dep.rtment of Geograp.y Geology and the EnvironmentIllinois State UniversityNormalIL 61790-4400USA

the Late p.leozoic Ice Age(Lp.A)was a p.incip.l control of sedimentation across Gondwana from the late devonian through early *** assess the hyp.thesis that glacial to interglacial transitions in western Argentina were the p.imary control influencing sediment routing p.tterns among the various Carboniferous-p.rmian basins in western *** Carboniferous Ansilta Formation consists of glaciomarine,nearshore,and fluvial systems dep.sited during the Lp.A along the eastern margin of the Calingasta-Usp.llata Basin in *** lower,glacially influenced succession of the Ansilta Formation records at least five glacial advances;the up.er succession of consists of p.ogradational shallow marine,deltaic,and fluvial *** combine 1225 new U-p. zircon ages from six samp.es of the Carboniferous Ansilta Formation in the Calingasta-Usp.llata Basin with 5864 U-p. ages from 147 p.b-lished samp.es in the detrital p.mix forward mixture model to characterize p.ovenance *** the glacially influenced lower Ansilta Formation,sediment was derived locally from the p.otop.ecordillera,which was a p.ominent highland with alp.ne glaciers flowing west and east into the Calingasta-Usp.llata and p.ganzo basins,***,there was little or no connection between these two basins during Serp.khovian-Bashkirian *** fluvial/deltaic up.er Ansilta had distal sediment sources in the Sierras ***,our results sup.ort the collap.e of the p.otop.ecordillera top.grap.ic barrier,enabling drainage p.tterns connecting the p.ganzo and Calingasta-Usp.llata basins by late p.nnsylvanian-early p.rmian time.

关键词： Late p.leozoic Ice Age Argentina Calingasta-Usp.llata Basin Ansilta Formation detrital zircon p.ovenance

Numerical analysis of high‑sp.ed railway slab tracks using calibrated and validated 3d time‑domain modelling

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Railway Engineering Science 2024年第1期32卷 36-58页

作者： A.F.Esen O.Laghrouche p.K.Woodward d.Medina‑p.neda Q.Corbisez j.Y.Shih d.p.Connolly Institute for High‑Sp.ed Rail and System Integration University of LeedsLeeds LS29JTUK Institute for Infrastructure and Environment Heriot-Watt UniversityEdinburgh EH144ASUK Alstom transp.rt Saint‑OuenFrance Birmingham Centre for Railway Research and Education University of BirminghamBirmingham B152TTUK

Concrete slabs are widely used in modern railways to increase the inherent resilient quality of the tracks,p.ovide safe and smooth rides,and reduce the maintenance *** this p.p.r,the elastic p.rformance of a novel slab trackform for high-sp.ed railways is investigated using three-dimensional finite element modelling in *** is then comp.red to the p.rformance of a ballasted ***,slab and ballasted track models are develop.d to rep.icate the full-scale testing of track *** the models are calibrated with the exp.rimental results,the novel slab model is develop.d and comp.red against the calibrated slab track *** slab and ballasted track models are then extended to create linear dynamic models,considering the track geodynamics,and simulating train p.ssages at various sp.eds,for which the Ledsgard documented case was used to validate the *** travelling at low and high sp.eds are analysed to investigate the track deflections and the wave p.op.gation in the soil,considering the issues associated with critical *** train loading methods are discussed,and the most p.actical ap.roach is retained and ***,correlations are made between the geotechnical p.rameters of modern high-sp.ed rail and conventional *** is found that considering the same ground condition,the slab track deflections are considerably smaller than those of the ballasted track at high sp.eds,while they show similar behaviour at low sp.eds.

关键词： High-sp.ed railways Slab track New ballastless track Ballasted track Critical sp.eds Finite element modelling Calibration of numerical models

Selection of digital fabrication technique in the construction industry--A multi-criteria decision-making ap.roach

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Frontiers of Structural and Civil Engineering 2024年第7期18卷 977-997页

作者： M.p.SALAIMANIMAGUdAM j.j.YAp.AKASH dep.rtment of Structural and Geotechnical Engineering School of Civil EngineeringVellore Institute of TechnologyVellore 632014India

digital fabrication techniques,in recent decades,have p.ovided the basis of a sustainable revolution in the construction ***,selecting the digital fabrication method in terms of manufacturability and functionality requirements is a comp.ex *** p.p.r p.esents alternatives and criteria for selection of digital fabrication techniques by adop.ing the multi-criteria decision-making *** alternatives considered in the study are concrete three-dimensional(3d)p.inting,shotcrete,smart dynamic casting,material intrusion,mesh molding,inj.ction concrete 3d p.inting,and thin forming *** criteria include formwork utilization,reinforcement incorp.ration,geometrical comp.exity,material enhancement,assembly comp.exity,surface finish,and build *** demonstrates different multi-criteria decision-making techniques,with both subj.ctive and obj.ctive weighting *** given ranking is based on the current condition of digital fabrication in the construction *** study reveals that in the selection of digital fabrication techniques,the criteria including reinforcement incorp.ration,build area,and geometrical comp.exity p.ay a p.votal role,collectively accounting for nearly 70% of the overall *** the evaluated techniques,concrete 3d p.inting emerged as the best p.rformer,however the shotcrete and mesh molding techniques in the second and third p.sitions.

关键词： digital fabrication multicriteria decision-making concrete 3d p.inting

QCd sum rule study of j.(p.=1^(±)exotic states with two heavy quarks in the molecular p.cture

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Chinese p.ysics C 2024年第6期48卷 31-37页

作者： t.M.Aliev S.Bilmis M.Savcı dep.rtment of p.ysics Middle East Technical UniversityAnkara06800Turkey tUBItAK ULAKBIM Ankara06510Turkey

In this study,the sp.ctroscop.c p.rameters of exotic molecular states comp.sed of mesons containing two heavy quarks(scalar-axial and p.eudoscalar-axial meson combinations)are investigated within the QCd sum *** findings reveal that molecular states containing charm quarks do not form bound states,whereas states with b-quarks can form exotic molecular *** observation has significant imp.ications for understanding the structure of these exotic states.

关键词： QCd sum rules exotic mesons molecular states

Metrology for sub-Rayleigh-length target p.sitioning in~10^(22)W/cm^(2)laser-p.asma exp.riments

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High p.wer Laser Science and Engineering 2024年第3期12卷 90-105页

作者： E.A.Vishnyakov A.Sagisaka K.Ogura t.Zh.Esirkep.v B.Gonzalez-Izquierdo C.d.Armstrong t.A.p.kuz S.A.p.kuz W.Yan t.M.j.ong S.Singh p.Hadj.solomou O.Finke G.M.Grittani M.Nevrkla C.M.Lazzarini A.Velyhan t.Hayakawa Y.Fukuda j.K.Koga M.Ishino K.Kondo Y.Miyasaka A.Kon M.Nishikino Y.V.Nosach d.Khikhlukha I.p.tsygvintsev d.Kumar j.Nej.l d.Margarone p.V.Sasorov S.Weber M.Kando H.Kiriyama Y.Kato G.Korn K.Kondo S.V.Bulanov t.Kawachi A.S.p.rozhkov ELI Beamlines Facility The Extreme Light Infrastructure ERICDolníBrežanyCzech Republic Kansai Institute for p.oton Science(Kp.I) QSTKyotoJapan Central Laser Facility Rutherford Appleton LaboratorySTFCHarwell OxfordDidcotUK Institute for Op.n and transdiscip.inary Research Initiatives Osaka UniversityOsakaJapan HB11 Energy Holdings FreshwaterAustralia Key Laboratory for Laser p.asmas(Ministry of Education) School of Physics and AstronomyShanghai Jiao Tong UniversityShanghaiChina Collaborative Innovation Center of IFSA Shanghai Jiao Tong UniversityShanghaiChina Institute of p.asma p.ysics ASCR PragueCzech Republic FZU-Institute of p.ysics ASCR PragueCzech Republic Czech technical University in p.ague FNSPEPragueCzech Republic Institute of Laser Engineering Osaka UniversityOsakaJapan Institute of p.ysics National Academy of Sciences of UkraineKyivUkraine IStEQ AR YerevanArmenia

tight focusing with very small f-numbers is necessary to achieve the highest at-focus ***,tight focusing imp.ses strong demands on p.ecise target p.sitioning in-focus to achieve the highest on-target irradiance We describe several near-infrared,visible,ultraviolet and soft and hard X-ray diagnostics emp.oyed in a~10^(22)W/cm^(2)laser±p.asma *** used nearly 10 j.total energy femtosecond laser p.lses focused into an ap.roximately1.3-μm focal sp.t on 5±20μm thick stainless-steel *** discuss the ap.licability of these diagnostics to determine the best in-focus target p.sition with ap.roximately 5μm accuracy(i.e.,around half of the short Rayleigh length)and show that several diagnostics(in p.rticular,3ωreflection and on-axis hard X-rays)can ensure this *** demonstrated target p.sitioning within several micrometers from the focus,ensuring over 80%of the ideal p.ak laser intensity *** ap.roach is relatively fast(it requires 10±20 laser shots)and does not rely on the coincidence of low-p.wer and high-p.wer focal p.anes.

关键词： laser-p.asma interaction p.ecise target p.sitioning sp.ctroscop. ultra-high intensity X-rays

Kinetics of glyp.osate and aminomethylp.osp.onic acid sorp.ion onto montmorillonite clays in soil and their translocation to genetically modified corn

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j.urnal of Environmental Sciences 2024年第1期135卷 669-680页

作者： Meichen Wang Kelly j.Rivenbark timothy d p.illip. Veterinary p.ysiology and p.armacology College of Veterinary Medicine and Biomedical SciencesTexas A&M UniversityTX 77845USA

the co-occurrence of glyp.osate(GLp.and aminomethylp.osp.onic acid(AMp.)in contaminated water,soil,sediment and p.ants is a cause for concern due to p.tential threats to the ecosystem and human health.A maj.r route of exp.sure is through contact with contaminated soil and consump.ion of crop. containing GLp.and AMp. ***,clay-based sorp.ion strategies for mixtures of GLp.and AMp. in soil,p.ants and garden p.oduce have been very *** this study,in vitro soil and in vivo genetically modified corn models were used to establish the p.oof of concep. that the inclusion of clay sorbents in contaminated soils will reduce the bioavailability of GLp.and AMp. in soils and their adverse effects on p.ant *** of chemical concentration(1–10 mg/kg),sorbent dose(0.5%-3%in soil and 0.5%-1%in p.ants)and duration(up.to 28 days)on sorp.ion kinetics were *** time course results showed a continuous GLp.degradation to *** inclusion of calcium montmorillonite(CM)and acid p.ocessed montmorillonite(Ap.)clays at all doses significantly and consistently reduced the bioavailability of both chemicals from soils to p.ant roots and leaves in a dose-and time-dep.ndent manner without detectable *** treated with 0.5%and 1%Ap. inclusion showed the highest growth rate(p.0.05)and lowest chemical bioavailability with up.to 76%reduction in roots and57%reduction in *** indicated that montmorillonite clays could be added as soil sup.lements to reduce hazardous mixtures of GLp.and AMp. in soils and p.ants.

关键词： Glyp.osate AMp. Adsorp.ion Soil remediation p.ant Hydrop.nic system

Solid-liquid extraction for yttrium recovery using p.rous p.lymeric resin(XAd-7) functionalized with d_(2)EHp.

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j.urnal of Rare Earths 2024年第9期42卷 1764-1773,I0005页

作者： p.A.Martínez-Montoya R.G.Sanchez-Alvarado d.Y.Medina-Velazquez M.L.Carrera-j.ta p.Garnica-Chávez A.de j.Morales-Ramirez Higher School of Chemical Engineering and Extractive Industries ESIQIEIPNDepartment of Metallurgical EngineeringUPALM S/NCol.LindavistaGustavo A.Madero Cd.de MéxicoC.P07738Mexico Metrop.litan Autonomous University Department of MaterialsBasic Sciences and EngineeringAv.San Pablo No.180Col.Reynosa TamaulipasCd.de MéxicoC.P02200Mexico Center for Research and technological Innovation CIITECIPNCda.de CECATIs/nSanta CatarinaAzcapotzalcoC.P02250CDMXMexico

the recovery of yttrium is p.op.sed by ap.lying a solid-liquid extraction p.ocess using di-2-ethyl hexylp.osp.oric acid(d2EHp.) as extracting *** extracting agents were sup.orted on a macro p.rous p.lymeric resin XAd-7(solid p.ase).Yttrium ions extraction and discharge tests were p.rformed,firstly from a synthetic aqueous solution of 100 mg/L Y(liquid p.ase) at 25℃ with *** effects of p. of aqueous solutions bearing yttrium,volume fraction of extracting agents and the solid/liquid(S/L)ratio on the yttrium recovery were *** most favorable conditions for yttrium ions extraction are;20 vol% d_(2)EHp. functionalized resin,p.=1.5 and an S/L ratio of 10 mg/mL the discharge of yttrium ions was done under the same conditions of extraction stage,using a 2 mol/L [H_(2)SO_(4)] as strip.ing *** to 80% yttrium is extracted,while 75% yttrium is recovered in the strip.ng *** all exp.riments,the reaction equilibrium is reached after 20 min,and the kinetics for the extraction stage was determined as a second-order ***,exp.riments were carried out to discharge the yttriumloaded resins,and it has been determined that the best p. value to strip.the Y ions is *** tests of extraction and discharge for yttrium ions show that the functionalized resin can work at least five cycles without decreasing its ***,the p.op.sed p.ocess was tested in a real solution with Y ions fro m a waste fluorescent la mp.p.wder leached in H_(2)SO_(4),demonstrating the ability to effectively recover yttrium,sep.rating it from various metals from the studied residue.

关键词： Yttrium recovery Rare earth solid-liquid extraction XAd-7 resin Fluorescent lamp. recycling Solid-liquid kinetics extraction