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Phosphine/Benzocyclone-based neutral nickel catalysts for Ethylene Polymerization and copolymerization with Polar Monomers

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ch.nese Journal of Polymer Science 2024年第2期42卷 202-212,I0007页

作者： fei Wang Li Pan Vladislav A.Tuskaev Svetlana ch.Gagieva Yue-Sheng Li Tianjin Key Lab of composite&functional Materials School of Material Science and EngineeringTianjin UniversityTianjin300072China Department of chemistry Lomonosov Moscow State UniversityRussian Federation InstitutionLeninskie Gory 1Moscow119991Russian Federation A n nesmeyanov Institute of Organoelement compounds Russian Academy of SciencesVavilova st.28Moscow119991Russian Federation

The efficient copolymerization of olefin with polar monomers using nickel-based catalysts presents a longstanding challenge. In this contribution, three phosphine-benzocyclone ligands and corresponding neutral nickel catalysts(ni1: Ar = Ph;ni2: Ar = 2-(c_(6)h_(5))c_(6)h_(4);ni3: Ar = 2-[2',6'-(Me O)_(2)-c_(6)h3]c_(6)h_(4)) were prepared and applied for the ethylene polymerization and copolymerization with polar monomers without any cocatalyst. The bulky substituent groups in complexes ni2 and ni3 contributed to high catalytic activities(up to 7.24×10^(6) and 9.04×10^(6)g·mol ni^(-1)·h^(-1), respectively), and produced high-molecular-weight polyethylene(Mw up to 545.7 k Da). complex ni3 exhibited high activities for ethylene polymerization at the level of 10^(6) g·mol ni^(-1)·h^(-1) across a wide range from 30 ℃ to 120 ℃, exhibiting excellent high temperature tolerance. These nickel complexes were also effectively employed in the copolymerization of ethylene with methyl acrylate, ethyl acrylate, butyl acrylate and lauryl acrylate, producing copolymers with high molecular weights(Mw up to 80.5 k Da) and high polar monomer incorporation(up to 8.2 mol%). Microstructure analyses revealed that the introduction of large sterically hindered substituents facilitated the incorporation of polar functional units into the polymer backbone. This study demonstrates the potential of these nickel-based catalysts for efficient copolymerization of olefin with polar monomers.

关键词： neutral nickel catalyst Ethylene polymerization copolymerization Polar acrylate monomers

The Soft 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.crawford J.P.Breuer T.Buggey G.Butcher R.canchal J.A.carter A.ch.ney Y.collado-Vega h.connor T.crawford n.Eaton c.feldman c.forsyth T.frantzen 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.Krucker 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 for Electronic Imaging Open UniversityMilton KeynesMK76 AAUK Birkeland centre for 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 Zurich 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 flight centre MD 20771USA center for 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 Information Research Institute Chinese Academy of SciencesBeijing 100045China centro de Astrobiologia(cAB) CSIC-INTAMadridSpain

The Soft X-ray Imager(SXI)is part of the scientific payload of the Solar wind Magnetosphere Ionosphere Link Explorer(SMILE)*** is a joint science mission between the European Space Agency(ESA)and the ch.nese Academy of Sciences(cAS)and is due for launch in *** is a compact X-ray telescope with a wide field-of-view(fOV)capable of encompassing large portions of Earth’s magnetosphere from the vantage point of the SMILE *** is sensitive to the soft X-rays produced by the Solar Wind charge eXch.nge(SWcX)process produced when heavy ions of solar wind origin interact with neutral particles in Earth’s *** provides a mech.nism for 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 field *** sensitivity of the SXI is such that it can potentially track movements of the magnetopause on timescales of a few minutes and the orbit of SMILE will enable such movements to be tracked for segments lasting many *** is led by the University of Leicester in the United Kingdom(UK)with collaborating organisations on hardware,software and science support within the UK,Europe,ch.na and the United States.

关键词： Soft X-ray Imaging micropore optics large area ccD

Amplitude analysis of the decays D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)

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ch.nese Physics c 2024年第8期48卷 6-33页

作者： M.Ablikim M.n.Achasov P.Adlarson O.Afedulidis X.c.Ai R.Aliberti A.Amoroso Q.An Y.Bai O.Bakina I.Balossino Y.Ban h.-R.Bao V.Batozskaya K.Begzsuren n.Berger M.Berlowski M.Bertani D.Bettoni f.Bianchi E.Bianco A.Bortone I.Boyko R.A.Briere A.Brueggemann h.cai X.cai A.calcaterra G.f.cao n.cao S.A.cetin J.f.ch.ng W.L.ch.ng G.R.che G.chelkov c.ch.n c.h.ch.n chao ch.n G.ch.n h.S.ch.n M.L.ch.n S.J.ch.n S.L.ch.n S.M.ch.n T.ch.n X.R.ch.n X.T.ch.n Y.B.ch.n Y.Q.ch.n Z.J.ch.n Z.Y.ch.n S.K.choi X.chu G.cibinetto f.cossio J.J.cui h.L.Dai J.P.Dai A.Dbeyssi R.E.de Boer D.Dedovich c.Q.Deng Z.Y.Deng A.Denig I.Denysenko M.Destefanis f.De Mori B.fang S.S.fang W.X.fang Y.fang Y.Q.fang R.farinelli L.fava f.feldbauer G.felici c.Q.feng J.h.feng Y.T.feng K.fischer M.fritsch c.D.fu J.L.fu Y.W.fu h.Gao Y.n.Gao Yang Gao S.Garbolino I.Garzia P.T.Ge Z.W.Ge c.Geng E.M.Gersabeck B.Ding X.X.Ding Y.Ding Y.Ding J.Dong L.Y.Dong M.Y.Dong X.Dong M.c.Du S.X.Du Z.h.Duan P.Egorov Y.h.fan J.fang JA.Gilman K.Goetzen L.Gong W.X.Gong W.Gradl S.Gramigna M.Greco M.h.Gu Y.T.Gu c.Y.Guan Z.L.Guan A.Q.Guo L.B.Guo M.J.Guo R.P.Guo Y.P.Guo A.Guskov J.Gutierrez K.L.han T.T.han X.Q.hao f.A.harris K.K.he K.L.he f.h.heinsius c.h.heinz Y.K.heng c.herold T.holtmann P.c.hong G.Y.hou X.T.hou Y.R.hou Z.L.hou B.Y.hu h.M.hu J.f.hu T.hu Y.hu G.S.huang K.X.huang L.Q.huang X.T.huang Y.P.huang T.hussain f.h\"olzken n.h\"usken n.in der Wiesche M.Irshad J.Jackson S.Janchiv J.h.Jeong Q.Ji Q.P.Ji W.Ji X.B.Ji X.L.Ji Y.Y.Ji X.Q.Jia Z.K.Jia D.Jiang h.B.Jiang P.c.Jiang S.S.Jiang T.J.Jiang X.S.Jiang Y.Jiang J.B.Jiao J.K.Jiao Z.Jiao S.Jin Y.Jin M.Q.Jing X.M.Jing T.Johansson S.Kabana n.Kalantar-nayestanaki X.L.Kang X.S.Kang M.Kavatsyuk B.c.Ke V.Khachatryan A.Khoukaz R.Kiuchi O.B.Kolcu B.Kopf M.Kuessner X.Kui A.Kupsc W.K\"uhn J.J.Lane P.Larin L.Lavezzi T.T.Lei Z.h.Lei h.Leith.ff M.Lellmann T.Lenz c.Li c.Li c.h.Li ch.ng Li D.M.Li f.Li G.Li h.Li h.B.Li h.J.Li h.n.Li hui Li J.R.Li J.S.Li K.Li L.J.Li L.K.Li Lei Li M.h.Li P.R.Li Q.M.Li Q.X.Li R.Li S.X.Li T.Li W.D.Li W.G.Li X.Li X.h.Li X.L.Li X.Y.Li Y Institute of high Energy Physics Chinese Academy of SciencesBeijing 100049China Beihang University Beijing 100191China Bochum Ruhr-University D-44780 BochumGermany Budker Institute of nuclear Physics SB RAS(BInP) Novosibirsk 630090Russia carnegie Mellon University PittsburghPennsylvania 15213USA central ch.na normal University Wuhan 430079China central South University Changsha 410083China ch.na center of Advanced Science and Technology Beijing 100190China ch.na University of Geosciences Wuhan 430074China ch.ng-Ang University Seoul06974Republic of Korea cOMSATS University Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan fudan University Shanghai 200433China GSI helmholtzcentre for heavy Ion Research Gmbh D-64291 DarmstadtGermany Guangxi normal University Guilin 541004China Guangxi University Nanning 530004China hangzhou normal University Hangzhou 310036China hebei University Baoding 071002China helmholtz Institute Mainz Staudinger Weg 18D-55099 MainzGermany henan normal University Xinxiang 453007China henan University Kaifeng 475004China henan University of Science and Technology Luoyang 471003China henan University of Technology Zhengzhou 450001China huangshan college Huangshan 245000China hunan normal University Changsha 410081China hunan University Changsha 410082China Indian Institute of Technology Madras Chennai 600036India Indiana University BloomingtonIndiana 47405USA Infn Laboratori nazionali di frascati INFN Laboratori Nazionali di FrascatiI-00044FrascatiItaly Infn Laboratori nazionali di frascati INFN Sezione di PerugiaI-06100PerugiaItaly Infn Laboratori nazionali di frascati University of PerugiaI-06100PerugiaItaly Infn Sezione di ferrara INFN Sezione di FerraraI-44122FerraraItaly Infn Sezione di ferrara University of FerraraI-44122FerraraItaly Inner Mongolia University Hohhot 010021China Institute of Modern Physics Lanzhou 730000China Institute of Physics and Technology Peace Avenue 54BUlaanbaatar 13330Mongolia Instituto de A

Using e^(+)e^(−)annihilation data corresponding to an integrated luminosity of 2.93 fb^(−1)taken at the center-of-mass energy√s=3.773 GeV with the BESIII detector,a joint amplitude analysis is performed on the decays D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)(non-η).The fit fractions of individual components are obtained,and large interferences among the dominant components of the decays D^(0)→a_(1)(1260)π,D^(0)→π(1300)π,D^(0)→ρ(770)ρ(770),and D^(0)→2(ππ)_(S)are observed in both *** the obtained amplitude model,the cP-even fractions of D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)(non-η)are determined to be(75.2±1.1_(stat).±1.5_(syst.))%and(68.9±1.5_(stat).±2.4_(syst.))%,*** branch.ng fractions of D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)(non-η)are measured to be(0.688±0.010_(stat.)±0.010_(syst.))%and(0.951±0.025_(stat.)±0.021_(syst.))%,*** amplitude analysis provides an important model for the binning strategy in measuring the strong phase parameters of D^(0)→4πwhen used to determine the cKM angleγ(ϕ_(3))via the B^(−)→DK^(−)decay.

关键词： BESIII D^(0)meson decays amplitude analysis cP-even fraction

Determination of the number ofψ(3686)events taken at BESⅢ

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ch.nese Physics c 2024年第9期48卷 8-20页

作者： M.Ablikim M.n.Achasov P.Adlarson O.Afedulidis X.c.Ai R.Aliberti A.Amoroso Q.An Y.Bai O.Bakina I.Balossino Y.Ban h.-R.Bao V.Batozskaya K.Begzsuren n.Berger M.Berlowski M.Bertani D.Bettoni f.Bianchi E.Bianco A.Bortone I.Boyko R.A.Briere A.Brueggemann h.cai X.cai A.calcaterra G.f.cao n.cao S.A.cetin J.f.ch.ng G.R.che G.chelkov c.ch.n c.h.ch.n chao ch.n G.ch.n h.S.ch.n h.Y.ch.n M.L.ch.n S.J.ch.n S.L.ch.n S.M.ch.n T.ch.n X.R.ch.n X.T.ch.n Y.B.ch.n Y.Q.ch.n Z.J.ch.n Z.Y.ch.n S.K.choi G.cibinetto f.cossio J.J.cui h.L.Dai J.P.Dai A.Dbeyssi R.E.de Boer D.Dedovich c.Q.Deng Z.Y.Deng A.Denig I.Denysenko M.Destefanis f.De Mori B.Ding X.X.Ding Y.Ding Y.Ding J.Dong L.Y.Dong M.Y.Dong X.Dong M.c.Du S.X.Du Y.Y.Duan Z.h.Duan P.Egorov Y.h.fan J.fang J.fang S.S.fang W.X.fang Y.fang Y.Q.fang R.farinelli L.fava f.feldbauer G.felici c.Q.feng J.h.feng Y.T.feng M.fritsch c.D.fu J.L.fu Y.W.fu h.Gao X.B.Gao Y.n.Gao Yang Gao S.Garbolino I.Garzia L.Ge P.T.Ge Z.W.Ge c.Geng E.M.Gersabeck A.Gilman K.Goetzen L.Gong W.X.Gong W.Gradl S.Gramigna M.Greco M.h.Gu Y.T.Gu c.Y.Guan Z.L.Guan A.Q.Guo L.B.Guo M.J.Guo R.P.Guo Y.P.Guo A.Guskov J.Gutierrez K.L.han T.T.han f.hanisch X.Q.hao f.A.harris K.K.he K.L.he f.h.heinsius c.h.heinz Y.K.heng c.herold T.holtmann P.c.hong G.Y.hou X.T.hou Y.R.hou Z.L.hou B.Y.hu h.M.hu J.f.hu S.L.hu T.hu Y.hu G.S.huang K.X.huang L.Q.huang X.T.huang Y.P.huang T.hussain f.hölzken n.hüsken n.in der Wiesche J.Jackson S.Janchiv J.h.Jeong Q.Ji Q.P.Ji W.Ji X.B.Ji X.L.Ji Y.Y.Ji X.Q.Jia Z.K.Jia D.Jiang h.B.Jiang P.c.Jiang S.S.Jiang T.J.Jiang X.S.Jiang Y.Jiang J.B.Jiao J.K.Jiao Z.Jiao S.Jin Y.Jin M.Q.Jing X.M.Jing T.Johansson S.Kabana n.Kalantar-nayestanaki X.L.Kang X.S.Kang M.Kavatsyuk B.c.Ke V.Khachatryan A.Khoukaz R.Kiuchi O.B.Kolcu B.Kopf M.Kuessner X.Kui n.Kumar A.Kupsc W.Kühn J.J.Lane P.Larin L.Lavezzi T.T.Lei Z.h.Lei M.Lellmann T.Lenz c.Li c.Li c.h.Li ch.ng Li D.M.Li f.Li G.Li h.B.Li h.J.Li h.n.Li hui Li J.R.Li J.S.Li Ke Li L.J.Li L.K.Li Lei Li M.h.Li P.R.Li Q.M.Li Q.X.Li R.Li S.X.Li T.Li W.D.Li W.G.Li X.Li X.h.Li X.L.Li X.Z.Li Xi Institute of high Energy Physics Beijing 100049China Beihang University Beijing 100191China Bochum Ruhr-University D-44780BochumGermany Budker Institute of nuclear Physics SB RAS(BInP) Novosibirsk 630090Russia carnegie Mellon University PittsburghPennsylvania 15213USA central ch.na normal University Wuhan 430079China central South University Changsha 410083China ch.na center of Advanced Science and Technology Beijing 100190China ch.na University of Geosciences Wuhan 430074China ch.ng-Ang University Seoul06974Republic of Korea cOMSATS University Islamabad Lahore CampusDefence RoadOff Raiwind Road54000LahorePakistan fudan University Shanghai 200433China GSI helmholtzcentre for heavy Ion Research Gmbh D-64291DarmstadtGermany Guangxi normal University Guilin 541004China Guangxi University Nanning 530004China hangzhou normal University Hangzhou 310036China hebei University Baoding 071002China helmholtz Institute Mainz Staudinger Weg 18D-55099MainzGermany henan normal University Xinxiang 453007China henan University Kaifeng 475004China henan University of Science and Technology Luoyang 471003China henan University of Technology Zhengzhou 450001China huangshan college Huangshan 245000China hunan normal University Changsha 410081China hunan University Changsha 410082China Indian Institute of Technology Madras Chennai 600036India Indiana University BloomingtonIndiana 47405USA Infn Laboratori nazionali di frascati (A)INFN Laboratori Nazionali di FrascatiI-00044FrascatiItaly(B)INFN Sezione di PerugiaI-06100PerugiaItaly(C)University of PerugiaI-06100PerugiaItaly Infn Sezione di ferrara (A)INFN Sezione di FerraraI-44122FerraraItaly(B)University of FerraraI-44122FerraraItaly Inner Mongolia University Hohhot 010021China Institute of Modern Physics Lanzhou 730000China Institute of Physics and Technology Peace Avenue 54BUlaanbaatar 13330Mongolia Instituto de Alta Investigación Universidad de TarapacáCasilla 7DArica 1000000Chile Jilin University Changchun 130012China Joha

The number ofψ(3686)events collected by the BESⅢdetector during the 2021 run period is determined to be(2259.3±11.1)×10~6 by counting inclusiveψ(3686)hadronic *** uncertainty is systematic and the statistical uncertainty is ***,the numbers ofψ(3686)events collected during the 2009 and 2012run periods are updated to be(107.7±0.6)×10~6 and(345.4±2.6)×10~6,*** numbers are consistent with the previous measurements within one standard *** total number ofψ(3686)events in the three data samples is(2712.4±14.3)×10~6.

关键词： ψ(3686) inclusive process hadronic events BESⅢdetector

highly divergent sympatric lineages of Leptotila verreauxi(Aves:columbidae)suggest a secondary contact area in the Isthmus of Tehuantepec,Mexico

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Avian Research 2024年第1期15卷 12-21页

作者： Orlando J.Espinosa-chávez Adolfo G.navarro-Sigüenza hernando Rodríguez-correa Luis A.Sánchez-González Museo de Zoología“Alfonso L.herrera” Depto.de Biología EvolutivaFacultad de CienciasUniversidad Nacional Autonoma de MexicoApdo.Postal 70-399CP 04510Ciudad de MexicoMexico Posgrado en ciencias Biologicas Unidad de PosgradoEdificio D1◦PisoCircuito de PosgradosCiudad UniversitariaUniversidad Nacional Autonoma de MexicoCoyoacanCP 04510CDMXMexico Escuela nacional de Estudios Superiores Unidad Morelia Universidad Nacional Autonoma de Mexico.Antigua Carretera a Patzcuaro No.8701 Col.Ex Hacienda de San Jose de la HuertaC.P.58190MoreliaMichoacanMexico

Due to a complex geological and biotic history,the Isthmus of Tehuantepec(IT),has been long recognized as a driver for the evolutionary divergence of numerous lowland and highland *** distributed in the lowlands of the American continent,the White-Tipped Dove(Leptotila verreauxi)is a polytypic species with 13 recognized *** of these have been recorded in Mexico,and the distribution of three abuts at the IT,suggesting a contact *** estimate phylogenetic patterns,divergence times and genetic differentiation,we examined two mt DnA(nD2 and cOI)and one n DnA(β-fibint 7)*** also used correlative ecological niche models(EnM)to assess whether ecological differences across the IT may have acted as a biogeographical *** estimated paleodistributions during the Middle holocene,Last Glacial Maximum and Last Interglacial,to evaluate the influence of climate ch.nges on the distribution and demographic *** results showed genetically distinct lineages that diverged approximately 2.5 million years *** and ecological factors may have played a dual role in promoting differentiation,but also in the formation of a secondary contact zone in the southern *** ecological niche comparisons indicated that the ecological niche of sympatric lineages at the IT are not identical,suggesting niches divergence;in addition,environmental niche models across the region indicated no abrupt biogeographic barriers,but the presence of regions with low *** results suggest that genetic differentiation originated by a vicariant event probably related to environmental factors,favored the evolution of different ecological ***,the absence of a biogeographic barrier but the presence of less suitable areas in the contact regions,suggest that secondary contact zones may be also maintained by climatic factors for the eastern group,but also by biotic interactions for the western group.

关键词： Biogeographical boundary humid and dry forests Isthmus of Tehuantepec Phylogeography Secondary contact

Experimental measurements of gamma-photon production and estimation of electron/positron production on the PETAL laser facility

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Matter and Radiation at Extremes 2024年第5期9卷 32-47页

作者： f.Brun L.Ribotte G.Boutoux X.Davoine P.E.Masson-Laborde Y.Sentoku n.Iwata n.Blanchot D.Batani I.Lantuéjoul L.Lecherbourg B.Rosse c.Rousseaux B.Vauzour D.Raffestin E.D’humières X.Ribeyre centre Lasers Intenses et Applications UMR 5107Universitéde Bordeaux-CNRS-CEA33405 TalenceFrance cEA DAMCESTAF-33116 Le BarpFrance cEA DAMDIFF-91297 ArpajonFrance cEA LMCEUniversitéParis-Saclay91680 Bruyères-le-ChâtelFrance Institute of Laser Engineering Osaka University2-6 YamadaokaSuitaOsaka 565-0871Japan

This article reports the first measurements of high-energy photons produced with the high-intensity PETawatt Aquitaine Laser(PETAL)*** experiments were performed during the commissioning of the *** laser had an energy of about 400 J,an intensity of 8×10^(18)W cm^(−2),and a pulse duration of 660 fs(fWhM).It was shot at a 2 mm-thick solid tungsten *** high-energy photons were produced mainly from the bremsstrahlung process for relativistic electrons accelerated inside a plasma generated on the front side of the *** paper reports measurements of electrons,protons and *** electrons up to35 MeV with a few-MeV temperature were recorded by a spectrometer,called SESAME(SpectreÉlectronS Angulaire MoyenneÉnergie).K-and L-shells were clearly detected by a photon spectrometer called SPEcTIX(Spectromètre Petalàcristal en TransmIssion pour le rayonnnement X).high-energy photons were diagnosed by cRAcc-X(cassette de RAdiographie centre chambre-rayonnement X),a bremsstrahlung *** cannon analysis is strongly dependent on the hypothesis adopted for the spectral *** shapes can exhibit similar reproductions of the experimental *** eliminate dependence on the shape hypothesis and to facilitate analysis of the data,simulations of the interaction were *** model the mech.nisms involved,a simulation chain including hydrodynamic,particle-in-cell,and Monte carlo simulations was *** simulations model the preplasma generated at the front of the target by the PETAL laser prepulse,the acceleration of electrons inside the plasma,the generation of MeV-range photons from these electrons,and the response of the detector impacted by the energetic photon *** this work enabled reproduction of the experimental *** high-energy photons produced have a large emission angle and an exponential distribution *** addition to the analysis of the photon spectra,positron production was also ***,if high

关键词： process positron hypothesis

further investigation on the fusion of ^(6)Li with ^(209)Bi target at near-barrier energies

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ch.nese Physics c 2024年第7期48卷 106-117页

作者：张高龙焦振威张广鑫 M.R.cortes 胡世鹏钱建强 D.Mengoni 屈卫卫李聪博郑云张焕乔孙慧斌王楠张春雷 J.J.Valiente-Dobón D.Testov M.Mazzocco A.Gozzelino c.Parascandolo D.Pierroutsakou M.La commara A.Goasduff D.Bazzacco D.R.napoli f.Galtarossa f.Recchia A.Illana S.Bakes I.Zanon S.Aydin G.de Angelis M.Siciliano R.Menegazzo S.M.Lenzi J.L.ferreira J.Rangel Serkan Akkoyun L.f.canto J.Lubian School of Physics Beihang UniversityBeijing 100191China Sino-french Institute of nuclear Engineering and Technology Sun Yat-Sen UniversityZhuhai 519082China Instituto de física Universidade Federal Fluminense24210-340NiteróiRio de JaneiroBrazil Institute for Advanced Study in nuclear Energy&Safety Shenzhen UniversityShenzhen 518060China Shenzhen Key Laboratory of Research and Manufacture of high Purity Germanium Materials and fetectors Shenzhen UniversityShenzhen 518060China Infn Sezione di PadovaPadovaItaly Dipartimento di fisica Astronomia dell'Universita di padova PadovaItaly State Key Laboratory of Radiation Medicine and Protection School of Radiation Medicine and ProtectionSoochow UniversitySuzhou 215123China ch.na Institute of Atomic Energy Beijing 102413China The Key Laboratory of Beam Technology and Material Modification of Ministry of Education College of Nuclear Science and TechnologyBeijing Normal UniversityBeijing 100875China Infn Laboratori Nazionali di LegnaroI-35020 LegnaroItaly Infn Sezione di NapoliI-80126 NapoliItaly Dipartimento di farmacia Universitàdi Napoli"Federico II"I-80131 NapoliItaly Department of natural and Mathematical Sciences Faculty of EngineeringTarsus University33480 MersinTurkiye Physics Division Argonne National LaboratoryLemont-ILUSA Departamento de Matemaética Física e Computaç˜ao Universidade do Estado do Rio de JaneiroFaculdade de Tecnologia27537-000ResendeRio de JaneiroBrazil Department of Physics Sivas Cumhuriyet UniversitySivasTurkey Instituto de física Universidade Federal do Rio de JaneiroCP 6852821941-972Rio de JaneiroBrazil

The complete and incomplete fusion cross sections for ^(6)Li+^(209)Bi were measured using the in-beamγ-ray method around the coulomb *** cross sections of(deuteron captured)incomplete fusion(Icf)products were re-quantified experimentally for this reaction *** results reveal that the Icf cross section is equivalent to that of complete fusion(cf)above the coulomb barrier and dominant near or below the coulomb barrier.A theoretical calculation based on the continuum discretized coupled ch.nnel(cDcc)method was performed for the aforementioned cf and Icf cross sections;the result is consistent with the *** universal fusion function(Uff)was also compared with the measured cf cross section for different barrier parameters,demonstrating that the cf suppression factor is significantly influenced by the choice of potential,which can reflect both dynamic and static effects of breakup on the fusion process.

关键词： cross section incomplete fusion suppression factor weakly bound nuclei

Solid-liquid extraction for yttrium recovery using porous polymeric resin(XAD-7) functionalized with D_(2)EhPA

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Journal 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-Jota 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 Metropolitan 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 proposed by applying a solid-liquid extraction process using di-2-ethyl hexylphosphoric acid(D2EhPA) as extracting *** extracting agents were supported on a macro porous polymeric resin XAD-7(solid phase).Yttrium ions extraction and discharge tests were performed,firstly from a synthetic aqueous solution of 100 mg/L Y(liquid phase) at 25℃ with *** effects of ph 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)EhPA functionalized resin,ph=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 stripping *** to 80% yttrium is extracted,while 75% yttrium is recovered in the striping *** all experiments,the reaction equilibrium is reached after 20 min,and the kinetics for the extraction stage was determined as a second-order ***,experiments were carried out to discharge the yttriumloaded resins,and it has been determined that the best ph 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 proposed process was tested in a real solution with Y ions fro m a waste fluorescent la mp powder leached in h_(2)SO_(4),demonstrating the ability to effectively recover yttrium,separating it from various metals from the studied residue.

关键词： Yttrium recovery Rare earth solid-liquid extraction XAD-7 resin fluorescent lamps recycling Solid-liquid kinetics extraction

Enabling low-cost decentralized power reserves adopting carbon dioxide for green methane exch.nge in stabilized clathrate adsorbent

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Journal of Energy chemistry 2024年第10期97卷 438-443,I0009页

作者： Lucas hanssens Maarten houlleberghs c.Vinod ch.ndran Geert Watson Sambhu Radhakrishnan Pascal Van Der Voort Joeri f.M.Denayer christine E.A.Kirschhock Johan A.Martens Eric Breynaert centre for Surface chemistry and catalysis-characterization and Application Team(cOK-KAT) 3001 LeuvenBelgium nMR/X-Ray Platform for convergence Research.nMRcoRe) 3001 LeuvenBelgium centre for Ordered Materials Organometallics and Catalysis(COMOC)Department of ChemistryGhent University9000 GhentBelgium Department of chemical Engineering Vrije Universiteit Brussel1050 BrusselBelgium

*** circular methane energy systems In recent decades,methane-based energy systems have rapidly gained traction across the globe because of the increasing availability of low-cost methane production ***,fossil methane... 详细信息

关键词： Long duration energy storage Green methane carbon neutrality confined clathrate hydrates ch_(4)/cO_(2) exch.nge Direct gas exch.nge