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三轴形变核^(131)Ba中的奇异集体激发模式

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物理学报 2024年第11期73卷 89-100页

作者：韦锐周厚兵王思成丁兵强赟华贾晨旭陈红星郭松 c.M.Petr.che d.Mengoni A.Astier E.dupont 吕冰锋 d.Bazzacco A.Boso A.Goasduf. f.r.cchia d.Testov f.Galtarossa G.Jaworski d.r.Napoli S.r.ccetto M.Siciliano J.J.Valiente-dobon c.Andreoiu f.H.Garcia K.Ortner K.Whitmore A.Ataç-Nyberg T.Bäck B.cederwall E.A.Lawrie I.Kuti d.Sohler T.Marchlewski J.Srebrny A.Tucholski 广西师范大学物理科学与技术学院桂林541004 广西核物理与核技术重点实验室桂林541004 中国科学院近代物理研究所兰州730000 中国科学院大学北京100049 巴黎萨克雷大学 CNRS/IN2P3IJCLab奥赛91405 帕多瓦大学物理和天文学系帕多瓦I-35131 意大利国家核物理研究所帕多瓦分部帕多瓦I-35131 意大利国家核物理研究所莱尼亚罗国家实验室莱尼亚罗(帕多瓦)I-35020 费拉拉大学理学与自然科学院费拉拉西蒙菲莎大学化学系本拿比BC V5A 1S6 皇家理工学院物理系斯德哥摩尔S-10691 国家研究基金会iThemba加速器科学实验室西萨默塞特7123 西开普大学物理与天文系贝尔维尔ZA-7535 HUN-rEN原子核研究所德布勒森4001 华沙巴斯德拉大学重离子实验室华沙02-093

利用意大利Legnaro实验室串列静电加速器提供的65 MeV^(13)c束流与122Sn靶的熔合蒸发反应布居了^(131)Ba的高自旋态,并搭建了新的能级纲图.新的能级纲图由15条转动带组成,包括三对手征双重带,其中两对正宇称手征带为赝自旋-手征四重带.... 详细信息

利用意大利Legnaro实验室串列静电加速器提供的65 MeV^(13)c束流与122Sn靶的熔合蒸发反应布居了^(131)Ba的高自旋态,并搭建了新的能级纲图.新的能级纲图由15条转动带组成,包括三对手征双重带,其中两对正宇称手征带为赝自旋-手征四重带.正负宇称手征带通过一系列增强的E1跃迁连接,表明它们之间存在八极关联.在低自旋区域搭建了一条新的转动带,通过一系列γ跃迁向νh1_(1/2)晕带退激.这种能级结构与摇摆带相似,但基于现有的实验证据还难以将它确认为摇摆带,不能排除其他集体激发机制,如γ振动的影响.

关键词：高自旋态手征带赝自旋八极关联摇摆运动

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A detailed comparison of.the composition of.rE)-Ba-cu-O-Ag bulk superconductors

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Superconductivity 2024年第1期9卷 87-94页

作者： J.V.J.congreve Y.Shi A.r.dennis H.druif. N.c.Tutt d.A.cardwell J.H.durrell department of.Engineering University of CambridgeCambridgeUK

The homogeneity of.the microstr.cture and composition are critical in determining the properties of.rare earthbarium‐cuprate,single grain bulk superconductors[(rE)BcO].The magnitude of.the trapped magnetic f.eld achieveable in these technologically important materials,in particular,is inf.uenced heavily by the size and distribution of.rE)_(2)BacuO_(x)(rE‐211)f.ux pinning inclusions in the bulk microstr.cture,whereas the size and distribution of.silver agglomerates present within the bulk superconducting matrix correlate dir.ctly with improved mechanical *** caref.l engineering,these materials have signif.cant potential f.r application in range of.devices related to energy storage,medicine,electro‐magnetic machinery and microelectronic *** of.rE)BcO bulk superconductors typically involves heating a powder.compact above its peritectic decomposition temperature f.llowed by slow cooling to f.cilitate the growth of.a single ***(rE)BcO composition has a dif.erent peritectic temperature and growth rate,which,theref.re,necessitates dif.erent requirements in the heating *** f.br.cation temperature and growth rate,f.r example,may have an ef.ect on the rE‐211 and silver distribution,which may,in turn,af.ect the superconducting properties of.the resulting single *** this work we compare the distributions of.silver and rE‐211 in the single grain microstr.ctures of.YBcOAg,GdBcO‐Ag,EuBcO‐Ag and SmBcO‐Ag bulk superconductors using optical microscopy,scanning electron microscopy and energy dispersive X‐ray *** observe that the distributions are very similar along both the a/b‐axis and c‐axis of.these *** suggests that f.ctors other than the maximum temperature used to achieve peritectic decomposition and the rate of.single grain growth are particularly inf.uential in determining the properties of.the as‐pr.cessed samples in the top seeded melt growth *** observation demonstrates there is f.eedom to us

关键词： YBcO‐Ag GdBcO‐Ag SmBcO‐Ag EuBcO‐Ag composition Bulk superconductor

Ef.ect of.solidif.cation cooling rate on microstr.cture and tribology char.cteristics of.Zn-4Si alloy

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International Journal of.Minerals,Metallurgy and Materials 2024年第2期31卷 362-373页

作者： f.Akbari M.Golkaram S.Beyrami G.Shirazi K.Mantashloo r.Taghiabadi M.Saghaf. Yazdi I.Ansarian department of.Metallurgy and Material Science Imam Khomeini International University(IKIU)Qazvin ***Iran

The main objective of.this work was to modif. the microstr.cture and enhance the tribological properties of.a new Zn-4Si al-loy through a high solidif.cation cooling rate(Scr).According to the results,by increasing the Scr f.om 2.0 to 59.5℃/s the average size of.primary Si particles and that of.the grains reduced f.om 76.1 and 3780μm to less than about 14.6 and 460μm,***-ing the Scr also enhanced the microstr.ctural homogeneity,decreased the porosity content(by 50%),and increased the matrix hardness(by 36%).These microstr.ctural changes enhanced the tribological *** instance,under the applied pressure of.0.5 MPa,an in-crease in the Scr f.om 2.0 to 59.5℃/s decreased the wear rate and the average f.0}tion coef.icient of.the alloy by 57%and 23%,*** wear mechanism was also changed f.om the severe delamination,adhesion,and abrasion in the slowly-cooled alloy to the mild tribolayer delamination/abrasion in the high-cooling-rate-solidif.ed sample.

关键词： zinc-silicon alloy primary silicon solidif.cation cooling rate tribology sliding wear

The Sof. X-ray Imager(SXI)on the SMILE Mission

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Earth and Planetary Physics 2024年第1期8卷 5-14页

作者： S.Sembay A.L.Alme d.Agnolon T.Arnold A.Beardmore A.Belén Balado Margeli c.Bicknell c.Bouldin G.Branduardi-raymont T.crawf.rd J.P.Breuer T.Buggey G.Butcher r.canchal J.A.carter A.cheney Y.collado-Vega H.connor T.crawf.rd N.Eaton c.f.ldman c.f.rsyth T.f.antzen G.Galgóczi J.Garcia G.Y.Genov c.Gordillo H-P.Gröbelbauer M.Guedel Y.Guo M.Hailey d.Hall r.Hampson J.Hasiba O.Hetherington A.Holland S-Y.Hsieh M.W.J.Hubbard H.Jeszenszky M.Jones T.Kennedy K.Koch-Mehrin S.Kögl S.Kr.cker K.d.Kuntz c.Lakin G.Laky O.Lylund A.Martindale J.Miguel Mas Hesse r.Nakamura K.Oksavik N.Østgaard H.Ottacher r.Ottensamer.c.Pagani S.Parsons P.Patel J.Pearson G.Peikert f.S.Porter T.Pouliantis B.H.Qureshi W.raab G.randal A.M.read N.M.M.roque M.E.rostad c.runciman S.Sachdev A.Samsonov M.Soman d.Sibeck S.Smit J.Søndergaard r.Speight S.Stavland M.Steller Tianran Sun J.Thornhill W.Thomas K.Ullaland B.Walsh d.Walton c.Wang S.Yang School of.Physics and Astronomy University of LeicesterLeicesterLE17RHUK Space Park Leicester University of LeicesterLeicesterLE17RHUK Mullard Space Science Laboratory University College LondonDorkingRH56NTUK centre f.r Electronic Imaging Open UniversityMilton KeynesMK76 AAUK Birkeland centre f.r Space Science Department of Physics and TechnologyUniv.of BergenN-5007 BergenNorway University of.Vienna A-1010 ViennaAustria Space research Institute Austrian Academy of SciencesA-8042 GrazAustria National Institute of.Aerospace Technology MadridSpain ESTEc European Space Agency2201 AZ NoordwijkNetherlands State Key Laboratory of.Space Weather National Space Science CentreBeijing 100190China University of.Applied Sciences and Arts Northwestern Switzerland CH-5210 WindischSwitzerland Koegl Space GmbH CH-8157 DielsdorfSwitzerland Space Acoustics GmbH CH-8157 DielsdorfSwitzerland Zur.ch University of.Applied Sciences 8400 WinterhurSwitzerland Genov Solutions N-5172 LoddefjordNorway STM Engineering N-5165 LaksevagNorway John Hopkins University Applied Physics Laboratory MD 20723USA NASA/Goddard Space f.ight centre MD 20771USA center f.r Space Physics Boston UniversityBostonMA 02215USA department of.Theoretical Physics and Astrophysics Masaryk University60177 BrnoCzech Republic Institute of.Physics E¨otvo¨s Lor´and University1053 BudapestHungary Aerospace Inf.rmation research Institute Chinese Academy of SciencesBeijing 100045China centro de Astrobiologia(cAB) CSIC-INTAMadridSpain

The Sof. X-ray Imager(SXI)is part of.the scientif.c payload of.the Solar wind Magnetosphere Ionosphere Link Explorer(SMILE)*** is a joint science mission between the European Space Agency(ESA)and the chinese Academy of.Sciences(cAS)and is due f.r launch in *** is a compact X-ray telescope with a wide f.eld-of.view(f.V)capable of.encompassing large portions of.Earth’s magnetosphere f.om the vantage point of.the SMILE *** is sensitive to the sof. X-rays produced by the Solar Wind charge eXchange(SWcX)pr.cess produced when heavy ions of.solar wind origin inter.ct with neutral particles in Earth’s *** provides a mechanism f.r boundary detection within the magnetosphere,such as the position of.Earth’s magnetopause,because the solar wind heavy ions have a very low density in regions of.closed magnetic f.eld *** sensitivity of.the SXI is such that it can potentially tr.ck movements of.the magnetopause on timescales of.a f.w minutes and the orbit of.SMILE will enable such movements to be tr.cked f.r segments lasting many *** is led by the University of.Leicester in the United Kingdom(UK)with collaborating organisations on hardware,sof.ware and science support within the UK,Europe,china and the United States.

关键词： Sof. X-ray Imaging micropore optics large area ccd

radiative heat transf.r analysis of.a concave porous f.n under the local thermal non-equilibrium condition:application of.the clique polynomial method and physics-inf.rmed neural networks

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Applied Mathematics and Mechanics(English Edition) 2024年第9期45卷 1613-1632页

作者： K.cHANdAN K.KArTHIK K.V.NAGArAJA B.c.PrASANNAKUMArA r.S.VArUN KUMAr T.MUHAMMAd Amrita School of.Artif.cial Intelligence Amrita Vishwa VidyapeethamBengaluru 560035KarnatakaIndia department of.Studies in Mathematics Davangere UniversityDavangere 577002KarnatakaIndia computational Science Lab Amrita School of EngineeringAmrita Vishwa VidyapeethamBengaluru 560035KarnatakaIndia department of.Pure and Applied Mathematics School of Mathematical SciencesSunway UniversityPetaling Jaya 47500Malaysia department of.Mathematics College of ScienceKing Khalid UniversityAbha 61413Saudi Arabia

The heat transf.r through a concave permeable f.n is analyzed by the local thermal non-equilibrium(LTNE)*** governing dimensional temperature equations f.r the solid and f.uid phases of.the porous extended surf.ce are modeled,and then are nondimensionalized by suitable dimensionless ***,the obtained nondimensional equations are solved by the clique polynomial method(cPM).The ef.ects of.several dimensionless parameters on the f.n's thermal prof.les are shown by graphical ***,the current study implements deep neural str.ctures to solve physics-governed coupled equations,and the best-suited hyperparameters are attained by comparison with various network *** results of.the cPM and physicsinf.rmed neural network(PINN)exhibit good agreement,signif.ing that both methods ef.ectively solve the thermal modeling problem.

关键词： heat transf.r f.n porous f.n local thermal non-equilibrium(LTNE)model physics-inf.rmed neural network(PINN)

def.rmable microlaser f.rce sensing

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Light(Science & Applications) 2024年第6期13卷 1196-1209页

作者： Eleni dalaka Joseph SHill Jonathan H.H.Booth Anna Popczyk Stef.n r.Pulver Malte c.Gather Marcel Schubert centre of.Biophotonics SUPASchool of Physics and AstronomyUniversity of St AndrewsNorth HaughSt AndrewsUK Humboldt centre f.r Nano-and Biophotonics Department of ChemistryUniversity of CologneKölnGermany School of.Psychology and Neuroscience University of St AndrewsSt Mary’s QuadSouth StreetSt AndrewsUK Institute f.r Bioengineering of.catalonia BarcelonaSpain

Mechanical f.rces are key regulators of.cellular behavior and f.nction,af.ecting many f.ndamental biological pr.cesses such as cell migration,embryogenesis,immunological responses,and pathological *** f.rce sensors and imaging techniques have been developed to quantif. these otherwise invisible f.rces in single cells and in ***,current techniques rely heavily on high-resolution microscopy and do not allow interrogation of.optically dense tissue,reducing their application to 2d cell cultures and highly transparent biological ***,we introduce dEf.rM,def.rmable microlaser f.rce sensing,a spectroscopic technique that detects sub-nanonewton f.rces with unpr.cedented spatio-temporal *** is based on the spectral analysis of.laser emission f.om dye-doped oil microdroplets and uses the f.rce-induced lif.ing of.laser mode degener.cy in these droplets to detect nanometer *** validation by atomic f.rce microscopy and development of.a model that links changes in laser spectrum to applied f.rce,dEf.rM is used to measure f.rces in 3d and at depths of.hundreds of.microns within tumor spheroids and late-stage drosophila *** f.rthermore show continuous f.rce sensing with single-cell spatial and millisecond temporal resolution,thus paving the way f.r non-invasive studies of.biomechanical f.rces in advanced stages of.embryogenesis,tissue remodeling,and tumor invasion.

关键词： invasion otherwise hundreds

Motivational and Methodological f.ctors Involved in the Helping Behavior Test in Laboratory rodents

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Journal of.Behavioral and Brain Science 2024年第8期14卷 240-254页

作者： Gabriela f. Marinho Jaqueline M. Wuo João Paulo Kurita Alvaro c. Lima regina H. Silva Pharmacology department Federal University of So Paulo So Paulo Brazil

Empathy allows humans and other animals to share the emotional state of.another, adopting that individual’s perspective on a given situation. This ability is f.ndamental f.r species living in groups. Helping behavior in laboratory animals has been used to study empathy. In this test, subjects are exposed to a conspecif.c that is trapped and learn to open the cage to release the other animal. However, the interpretation of.helping behavior as an emphatically motivated action is still controversial. Here we review the studies that use the helping behavioral test proposed by Ben-Ami Bartal and colleagues in 2011 to better understand motivational f.ctors f.r this behavior. In addition, we compare methodological aspects of.these studies. In conclusion, helping behavior.can be driven by empathy, but other f.ctors such as the desire f.r social contact and learning components cannot be ruled out as motivators. In addition, studies f.cused on evaluating neurobiological mechanisms underlying helping behavior in laboratory rodents can help elucidate the f.ctors involved in releasing the trapped co-specif.c.

关键词： Animal Models Empathy Prosocial Behavior rats

Assessment of.cO_(2)storage prospect based on physical properties of.rio Bonito f.rmation r.ck units

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Energy Geoscience 2024年第1期5卷 321-330页

作者： r.chardson M.Abraham-A Stephanie San Martín cañas Isabella f.S.Miranda colombo c.G.Tassinari Institute of.Energy and Environment(IEE) University of São Paulo(USP)Brazil research centre f.r Greenhouse Gas Innovation(rcGI) University of Sãao Paulo(USP)Brazil

The physical properties of.the r.ck units associated with the rio Bonito f.rmation are presented in this study with the f.cus on modelling reservoir quality based on petrophysics-derived parameters to evaluate cO_(2)storage *** involves the modelling of.the reservoir depths,thicknesses,f.ow zone indicators(f.I),and ef.ective permeability(Kef.)and presenting the cO_(2)storage ef.iciency f.ctors peculiar to the r.ck units of.the study *** results presented by this study f.r the stated objectives are not quite common in the *** values range f.om 200 md to higher than 2000 md,and f.I values are generally above 1.0 mm and up to 13.0 mm within the portions covered by the drilled *** sandstone units r.corded are up to 20 m thick in some *** Kef. and f.I models indicate the sandstone reservoirs as permeable units to support the injection and circulation of.cO_(2)within the potential reservoir units of.the rio Bonio f.rmation across São Paulo *** f.om some points in the southeastern part of.the study location,where the rio Bonito are delineated at depths less than 800 m(minimum cO_(2)storage depth based on best pr.ctices),other portions are deeper,ranging f.om 950 m to 3500 ***-bedded layers will af.ect the integrity of.the r.cks as cO_(2)storage tanks or reservoir seals/traps/overburden within the *** bed thicknesses are up to 20 m in some ***,hybrid cO_(2)reservoir units are f.asible,especially in portions where thin siltstone layers are sandwiched between sandstone units to provide considerable thicknesses based on cO_(2)storage *** current study shows that useable areas considering reservoir thickness,depth,and other physical qualities will signif.cantly control the cO_(2)storage ef.iciency of.the study *** studies f.aturing a detailed geophysical exploration of.the site to conf.rm the availability and saturations of.preexisting f.uid(hydr.carbon and water)are encouraged

关键词： rio Bonito Ef.ective permeability f.uid transmissibility cO_(2)storage prospect reservoir quality Overburden integrity f.ow zones

ref.0}tive outcomes af.er V4c Tor.c collamer lens implantation over 1y of.f.llow-up

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International Journal of.Ophthalmology(English edition) 2024年第7期17卷 1322-1330页

作者： Humberto carreras-díaz Josef.na reñones de Abajo María del rosario carreras-díaz Amalia Lorente-Velázquez Vithas Eur.canarias Las Palmas de Gran Canaria 35004Spain University Hospital of.Girona doctor Josep Trueta Gerona 17007Spain departament of.Optometry and Vision Faculty of Optics and OptometryComplutense University of MadridMadrid 28040Spain

AIM:To evaluate ref.0}tive outcomes and corneal astigmatism changes af.er Tor.c implantable collamer lens with a central port(V4c T-IcL)implantation over 1y of.***:A retrospective study was perf.rmed including 50 eyes of.50 patients that underwent V4c T-IcL ***(UdVA)and corr.cted(cdVA)distance visual acuities,ref.0}tion,ref.0}tive and corneal astigmatism changes and corneal coupling corr.ction were evaluated preoperatively,1 and 12mo *** analysis was used f.r astigmatism *** of.adjustment(cAdj)was calculated f.r.corneal coupling ***:The mean UdVA achieved was 0.03 logMAr at 1mo and remained unchanged throughout the whole f.llow-up(P=0.193).At the last visit,84%of.the eyes achieved a cdVA of.0.00 logMAr or *** spher.cal equivalent ref.0}tion(SEQ),96%of.eyes were ranges of.1.00 d and 84%of.them within±0.50 ***,94%of.eyes had a remaining ref.0}tive cylinder within±1.00 d and 78%of.them within±0.50 ***,SEQ and ref.0}tive cylinder,remain stable over the postoperative f.llow-up(P=1.000 and P=0.660,respectively).In terms of.surgically induced astigmatism(SIA),no statistically signif.cant dif.erences were f.und over the f.llow-up(P=0.102)and under.corr.ction was f.und with a corr.ction index lower than the unit at each visit.A keratometr.c astigmatism induced of.0.59±0.53(vector mean:0.26×73º)d was reached at the last *** signif.cant changes in terms of.corneal astigmatism orientation were reported over post-surgery visits(P=0.129 and P=0.097 at 1 and 12mo respectively).No clinical signif.cance was f.und f.r.cAdj on with-the-rule *** postoperative complications resulting f.om the surgery were ***:ref.0}tive outcomes suggest that the V4c T-IcL implantation f.r.corr.ction of.myopic astigmatism was satisf.ctory in terms of.ef.ectiveness,saf.ty,and stability during 1y of.*** astigmatism induced by the incision around 0.5 d is achieved

关键词： V4c Tor.c collamer lens corneal astigmatism surgically induced astigmatism corneal coupling