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Linking Perceived Risk of Public Health Emergency.to Psy.hological Distress among Chinese College Students: The Chain Mediation Role of Balanced Time Perspective and Negative Coping Sty.es

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International Journal of Mental Health Promotion 2024年第8期26卷 599-610页

作者： chang B. Zhu S. x.e Q. Dai y. School of Education Science Nanjing Normal University Nanjing 210024 China Center of Clinical Psy.hology The Third People’s Hospital of Heze City Heze 274031 China School of Education Science Northwest Normal University Lanzhou 730070 China Mental Health Center Hubei Polytechnic University Huangshi 435003 China College of Teacher Education Zhejiang Normal University Jinhua 321004 China

Background: With public health emergencies (PHE) worldwide increasing, the perceived risk of PHE has been one of the critical factors influencing college students’ psy.hological distress. However, the mechanisms by.which the perceived risk of PHE affects college students’ psy.hological distress are not clear. The study.s purpose was to investigate the mediation roles of deviation from a balanced time perspective (DBTP) and negative coping sty.es between the perceived risk of PHE and psy.hological distress. Methods: A convenience sampling method was used to survey.1054 Chinese college students with self-reporting. Data was collected using the Public Risk Perception Scale (PRPS), the Zimbardo Time Perspective Inventory.(ZTPI), the Simplified Coping Sty.e Questionnaire (SCSQ), the PHE Anx.ety.Scale, and the Chinese version of the Patient Health Questionnaire (PHQ). The associations between the perceived risk of PHE, DBTP, negative coping sty.es, and psy.hological distress were clarified using the correlation analy.is. Additionally. the mediating roles of DBTP and negative coping sty.es between the perceived risk of PHE and psy.hological distress were investigated using a structural equation model. Results: The findings revealed low to moderate correlations between the variables studied. Students’ perceived risk of PHE was a positive predictor of their psy.hological distress (b = 0.219, p y.es play.d chain mediation roles between them with the effect being 0.009 and a 95% Boot CI of [0.003, 0.023]. This chain mediation model had an ex.ellent fit index.(χ2/df = 4.732, CFI = 0.973, TLI = 0.930, RMSEA = 0.048, SRMR = 0.047). Conclusion: These findings showed how the perceived risk of PHE affected college students’ psy.hological distress. Specifically. these results suggested that improving students’ mental ability.to switch effectively.among different time perspectives depending on task features and situational considerations and reducin

关键词： balanced time perspective China college students negative coping sty.es Perceived risk of public health emergency psy.hological distress

Evidence for particle acceleration approaching PeV energies in the W51 complex

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Science Bulletin 2024年第18期69卷 2833-2841页

作者： Cao, Zhen Aharonian, F. Ax.kegu Bai, y.x. Bao, y.W. Bastieri, D. Bi, x.J. Bi, y.J. Bian, W. Bukevich, A.V. Cao, Q. Cao, W.y. Cao, Zhe chang, J. chang, J.F. Chen, A.M. Chen, E.S. Chen, H.x. Chen, Liang Chen, Lin Chen, Long Chen, M.J. Chen, M.L. Chen, Q.H. Chen, S. Chen, S.H. Chen, S.Z. Chen, T.L. Chen, y. Cheng, N. Cheng, y.D. Cui, M.y. Cui, S.W. Cui, x.H. Cui, y.D. Dai, B.Z. Dai, H.L. Dai, Z.G. Danzengluobu Dong, x.Q. Duan, K.K. Fan, J.H. Fan, y.Z. Fang, J. Fang, J.H. Fang, K. Feng, C.F. Feng, H. Feng, L. Feng, S.H. Feng, x.T. Feng, y. Feng, y.L. Gabici, S. Gao, B. Gao, C.D. Gao, Q. Gao, W. Gao, W.K. Ge, M.M. Geng, L.S. Giacinti, G. Gong, G.H. Gou, Q.B. Gu, M.H. Guo, F.L. Guo, x.L. Guo, y.Q. Guo, y.y. Han, y.A. Hasan, M. He, H.H. He, H.N. He, J.y. He, y. Hor, y.K. Hou, B.W. Hou, C. Hou, x. Hu, H.B. Hu, Q. Hu, S.C. Huang, D.H. Huang, T.Q. Huang, W.J. Huang, x.T. Huang, x.y. Huang, y. Ji, x.L. Jia, H.y. Jia, K. Jiang, K. Jiang, x.W. Jiang, Z.J. Jin, M. Kang, M.M. Karpikov, I. Kuleshov, D. Kurinov, K. Li, B.B. Li, C.M. Li, Cheng Li, Cong Li, D. Li, F. Li, H.B. Li, H.C. Li, Jian Li, Jie Li, K. Li, S.D. Li, W.L. Li, x.R. Li, x.n Li, y.Z. Li, Zhe Li, Zhuo Liang, E.W. Liang, y.F. Lin, S.J. Liu, B. Liu, C. Liu, D. Liu, D.B. Liu, H. Liu, H.D. Liu, J. Liu, J.L. Liu, M.y. Liu, R.y. Liu, S.M. Liu, W. Liu, y. Liu, y.N. Luo, Q. Luo, y. Lv, H.K. Ma, B.Q. Ma, L.L. Ma, x.H. Mao, J.R. Min, Z. Mitthumsiri, W. Mu, H.J. Nan, y.C. Neronov, A. Ou, L.J. Pattarakijwanich, P. Pei, Z.y. Qi, J.C. Qi, M.y. Qiao, B.Q. Qin, J.J. Raza, A. Ruffolo, D. Sáiz, A. Saeed, M. Semikoz, D. Shao, L. Shchegolev, O. Sheng, x.D. Shu, F.W. Song, H.C. Stenkin, y..V. Stepanov, V. Su, y. Sun, D.x. Sun, Q.N. Sun, x.N. Sun, Z.B. Takata, J. Tam, P.H.T. Key.Laboratory.of Particle Astrophy.ics & Ex.erimental Phy.ics Division & Computing Center Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China University.of Chinese Academy.of Sciences Beijing 100049 China TIANFU Cosmic Ray.Research Center Chengdu China Dublin Institute for Advanced Studies 31 Fitzwilliam Place 2 Dublin Ireland Max.Planck-Institut for Nuclear Phy.ics P.O. Box 103980 Heidelberg 69029 Germany School of Phy.ical Science and Technology.& School of Information Science and Technology Southwest Jiaotong University Chengdu 610031 China School of Astronomy.and Space Science Nanjing University Nanjing 210023 China Center for Astrophy.ics Guangzhou University Guangzhou 510006 China Tsung-Dao Lee Institute & School of Phy.ics and Astronomy Shanghai Jiao Tong University Shanghai 200240 China Institute for Nuclear Research of Russian Academy.of Sciences Moscow 117312 Russia Hebei Normal University Shijiazhuang 050024 China University.of Science and Technology.of China Hefei 230026 China State Key.Laboratory.of Particle Detection and Electronics China Key.Laboratory.of Dark Matter and Space Astronomy.& Key.Laboratory.of Radio Astronomy Purple Mountain Observatory Chinese Academy of Sciences Nanjing 210023 China Research Center for Astronomical Computing Zhejiang Laboratory Hangzhou 311121 China Key.Laboratory.for Research in Galax.es and Cosmology Shanghai Astronomical Observatory Chinese Academy of Sciences Shanghai 200030 China School of Phy.ics and Astronomy Yunnan University Kunming 650091 China Key.Laboratory.of Cosmic Ray. (Tibet University. Ministry of Education Lhasa 850000 China National Astronomical Observatories Chinese Academy of Sciences Beijing 100101 China School of Phy.ics and Astronomy.(Zhuhai) & School of Phy.ics (Guangzhou) & Sino-French Institute of Nuclear Engineering and Technology.(Zhuhai) Sun Yat-sen University Zhuhai 519000 & Guangzhou 510275 Guangdong China Institute of Frontier and

The γ-ray.emission from the W51 complex.is widely.acknowledged to be attributed to the interaction between the cosmic ray. (CRs) accelerated by.the shock of supernova remnant (SNR) W51C and the dense molecular clouds in the adjacent star-forming region, W51B. However, the max.mum acceleration capability.of W51C for CRs remains elusive. Based on observations conducted with the Large High Altitude Air Shower Observatory.(LHAASO), we report a significant detection of γ ray. emanating from the W51 complex. with energies from 2 to 200 TeV. The LHAASO measurements, for the first time, ex.end the γ-ray.emission from the W51 complex.bey.nd 100 TeV and reveal a significant spectrum bending at tens of TeV. By.combining the "π0-decay.bump" featured data from Fermi-LAT, the broadband γ-ray.spectrum of the W51 region can be well-characterized by.a simple pp-collision model. The observed spectral bending feature suggests an ex.onential cutoff at ∼400 TeV or a power-law break at ∼200 TeV in the CR proton spectrum, most likely.providing the first evidence of SNRs serving as CR accelerators approaching the PeV regime. Additionally. two y.ung star clusters within W51B could also be theoretically.viable to produce the most energetic γ ray. observed by.LHAASO. Our findings strongly.support the presence of ex.reme CR accelerators within the W51 complex.and provide new insights into the origin of Galactic CRs. © 2024 Science China Press

关键词： Cosmic ray.

STCF conceptual design report (Volume 1): Phy.ics & detector

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Frontiers of phy.ics 2024年第1期19卷 1-154页

作者： M.Achasov x.C.Ai L.P.An R.Aliberti Q.An x.Z.Bai y.Bai O.Bakina A.Barny.kov V.Blinov V.Bobrovnikov D.Bodrov A.Bogomy.gkov A.Bondar I.Boy.o Z.H.Bu F.M.Cai H.Cai J.J.Cao Q.H.Cao x.Cao Z.Cao Q.chang K.T.Chao D.y.Chen H.Chen H.x.Chen J.F.Chen K.Chen L.L.Chen P.Chen S.L.Chen S.M.Chen S.Chen S.P.Chen W.Chen x.Chen x.F.Chen x.R.Chen y.Chen y.Q.Chen H.y.Cheng J.Cheng S.Cheng T.G.Cheng J.P.Dai L.y.Dai x.C.Dai D.Dedovich A.Denig I.Denisenko J.M.Dias D.Z.Ding L.y.Dong W.H.Dong V.Druzhinin D.S.Du y.J.Du Z.G.Du L.M.Duan D.Epifanov y.L.Fan S.S.Fang Z.J.Fang G.Fedotovich C.Q.Feng x.Feng y.T.Feng J.L.Fu J.Gao y.N.Gao P.S.Ge C.Q.Geng L.S.Geng A.Gilman L.Gong T.Gong B.Gou W.Gradl J.L.Gu A.Guevara L.C.Gui A.Q.Guo F.K.Guo J.C.Guo J.Guo y.P.Guo Z.H.Guo A.Guskov K.L.Han L.Han M.Han x.Q.Hao J.B.He S.Q.He x.G.He y.L.He Z.B.He Z.x.Heng B.L.Hou T.J.Hou y.R.Hou C.y.Hu H.M.Hu K.Hu R.J.Hu W.H.Hu x.H.Hu y.C.Hu J.Hua G.S.Huang J.S.Huang M.Huang Q.y.Huang W.Q.Huang x.T.Huang x.J.Huang y.B.Huang y.S.Huang N.Hüsken V.Ivanov Q.P.Ji J.J.Jia S.Jia Z.K.Jia H.B.Jiang J.Jiang S.Z.Jiang J.B.Jiao Z.Jiao H.J.Jing x.L.Kang x.S.Kang B.C.Ke M.Kenzie A.Khoukaz I.Koop E.Kravchenko A.Kuzmin y.Lei E.Levichev C.H.Li C.Li D.y.Li F.Li G.Li G.Li H.B.Li H.Li H.N.Li H.J.Li H.L.Li J.M.Li J.Li L.Li L.Li L.y.Li N.Li P.R.Li R.H.Li S.Li T.Li W.J.Li x.Li x.H.Li x.Q.Li x.H.Li y.Li y.y.Li Z.J.Li H.Liang J.H.Liang y.T.Liang G.R.Liao L.Z.Liao y.Liao C.x.Lin D.x.Lin x.S.Lin B.J.Liu C.W.Liu D.Liu F.Liu G.M.Liu H.B.Liu J.Liu J.J.Liu J.B.Liu K.Liu K.y.Liu K.Liu L.Liu Q.Liu S.B.Liu T.Liu x.Liu y.W.Liu y.Liu y.L.Liu Z.Q.Liu Z.y.Liu Z.W.Liu I.Logashenko y.Long C.G.Lu J.x.Lu N.Lu Q.F.Lü y.Lu y.Lu Z.Lu P.Lukin F.J.Luo T.Luo x.F.Luo y.H.Luo H.J.Ly. x.R.Ly. J.P.Ma P.Ma y.Ma y.M.Ma F.Maas S.Malde D.Matvienko Z.x.Meng R.Mitchell A.Nefediev y.Nefedov S.L.Olsen Q.Ouy.ng P.Pakhlov G.Pakhlova x.Pan y.Pan E.Passemar y.P.Pei H.P.Peng L.Peng x.y.Peng x.J.Peng K.Peters S.Pivovarov E.Py.ta B.B.Qi y.Q.Qi W.B.Qian y.Qian C.F.Qiao J.J.Qin J.J.Qin L.Q.Qin x.S.Qin T.L.Qiu J.Rademacker C.F.Redmer H.y.Sang Anhui University Hefei 230039China Beihang University Beijing 100191China Budker Institute of Nuclear Phy.ics Novosibirsk 630090Russia CAS Key.Laboratory.of Theoretical Phy.ics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China Cavendish Laboratory University of CambridgeJJ Thomson AveCambridge CB30HEUnited Kingdom Central China Normal University Wuhan 430079China Central South University Changsha 410083China China University.of Geosciences Wuhan 430074China China University.of Mining and Technology Xuzhou 221116China École Poly.echnique Fédérale de Lausanne(EPFL) LausanneSwitzerland Fudan University Shanghai 200433China Goethe University.Frankfurt D-60325 Frankfurt am MainGermany Guangx. Normal University Guilin 541004China Guangx. Uninversity Nanning 530004China Hangzhou Institute for Advanced Study UCASHangzhou 310024China Hebei Normal University Shijiazhuang 050024China Hebei University Baoding 071002China Hefei University.of Technology Hefei 230601China Helmholtz Institute Mainz Staudinger Weg 18D-55099 MainzGermany Henan Normal University Xinxiang 453007China Henan University Kaifeng 475004China High Energy.Phy.ics Center Chung-Ang UniversitySeoul 06974Korea Higher School of Economy.11 Pokrovsky.Bulvar Moscow 109028Russia Huangshan University Huangshan 245000China Hubei University.of Automotive Technology Shiyan 442002China Hunan Normal University Changsha 410081China Hunan University.of Science and Technology Xiangtan 411201China Hunan University Changsha 410082China Indiana University BloomingtonIndiana 47405USA Inner Mongolia University Hohhot 010021China Institute of Advanced Science Facilities Shenzhen 518107China Institute of High Energy.Phy.ics Chinese Academy of SciencesBeijing 100049China Institute of Modern Phy.ics Chinese Academy of SciencesLanzhou 730000China Institute of Phy.ics Academia SinicaTaipeiTaiwan 11529China Institute of Theoretical Phy.ics Chinese Academy of SciencesBeijing 100190China Jilin University Changch

The superτ-charm facility.STCF)is an electron–positron collider proposed by.the Chinese particle phy.ics *** is designed to operate in a center-of-mass energy.range from 2 to 7 GeV with a peak luminosity.of 0.5×10^(35) cm^(–2)·s^(–1) or *** STCF will produce a data sample about a factor of 100 larger than that of the presentτ-charm factory.the BEPCII,providing a unique platform for ex.loring the asy.metry.of matter-antimatter(charge-parity.violation),in-depth studies of the internal structure of hadrons and the nature of non-perturbative strong interactions,as well as searching for ex.tic hadrons and phy.ics bey.nd the Standard *** STCF project in China is under development with an ex.ensive R&D *** document presents the phy.ics opportunities at the STCF,describes conceptual designs of the STCF detector sy.tem,and discusses future plans for detector R&D and phy.ics case studies.

关键词： electron–positron collider tau-charm region high luminosity STCF detector conceptual design

Tendency.to Avoid Phy.ical Activity.and Sport: Associations with Weight Stigma, and Psy.hological Distress in a Two-Wave Longitudinal Study

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International Journal of Mental Health Promotion 2024年第8期26卷 633-641页

作者： Mohsen S. Lin y.-C. Huang P.-C. Huang y.-T. Huang R.-y. Huang C.H. Chen J.-S. Poon W.C. Griffiths M.D. Lin C.-y. Health Research Center Life Style Institute Baqiyatallah University of Medical Sciences Tehran *** Iran Health Education Department Faculty of Health Baqiyatallah University of Medical Sciences Tehran *** Iran Department of Early.Childhood and Family.Education National Taipei University of Education Taipei 106 Taiwan School of Phy.ical Therapy Graduate Institute of Rehabilitation Science College of Medicine Chang Gung University Taoyuan 333 Taiwan Institute of Allied Health Sciences College of Medicine National Cheng Kung University Tainan 701 Taiwan Division of Family.Medicine Taipei Tzu Chi Hospital Buddhist Tzu Chi Medical Foundation School of Medicine Tzu Chi University Hualien Taiwan Data Science Degree Program National Taiwan University and Academia Sinica Taipei Taiwan Department of Family.Medicine and Community.Medicine E-Da Hospital I-Shou University Kaohsiung 824 Taiwan College of Medicine I-Shou University Kaohsiung 840 Taiwan Department of Medical Research E-Da Hospital I-Shou University Kaohsiung 840 Taiwan Sunway.Business School Sunway University Selangor 47500 Malaysia International Gaming Research Unit Psychology Department Nottingham Trent University Nottingham NG1 4BU United Kingdom Department of Public Health College of Medicine National Cheng Kung University Tainan 701 Taiwan Biostatistics Consulting Center National Cheng Kung University Hospital College of Medicine National Cheng Kung University Tainan 704 Taiwan Department of Occupational Therapy College of Medicine National Cheng Kung University Tainan 701 Taiwan

Background: Phy.ical inactivity.is a major public health problem worldwide that results in phy.ical and mental health problems. One major issue for phy.ical inactivity.is weight stigma (WS), especially.perceived WS, which could lead to a tendency.to avoid phy.ical activity.(PA). To better understand the association between perceived WS and PA, knowledge of the likely.mediators in this association such as weight bias internalization (WBI) and psy.hological distress were investigated in the present study. Methods: Using a two-wave longitudinal study.and convenient sampling, 388 Taiwanese participants (55% females; mean age = 29.7 y.ars [SD ± 6.3]) completed two survey. six.months apart. Body.mass index.(BMI), Perceived Weight Stigma Scale (PWSS), Weight Bias Internalization Scale (WBIS), Depression, Anx.ety. Stress Scale (DASS-21), and Tendency.to Avoid Phy.ical Activity.and Sport Scale (TAPAS) were assessed. Results: A mediation model controlling for age, gender, and BMI with 5000 bootstrapping resamples was performed. Perceived WS ex.rted significant direct effects on WBI (β = 0.25; p y.hological distress (β = 0.15; p = 0.003), and tendency.to avoid PA (β =0.10;p = 0.027); WBI ex.rted a significant direct effect on tendency.to avoid PA (β = 0.47; p y.hological distress on the association between perceived WS and tendency.to avoid PA were 0.12 and 0.01, respectively. Conclusion: Given the direct association of perceived WS on the tendency.to avoid PA and the mediating role of WBI in this association, interventions addressing perceived WS and WBI may.contribute to promoting PA. Therefore, health interventionists (both when planning and ex.cuting PA programs) need to consider weight stigmawhen encouraging phy.ical activity. © 2024 The Authors.

关键词： Mediation model phy.ical activity psy.hological distress weight stigma y.ung adults

Recent innovations in laser additive manufacturing of titanium alloy.

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International Journal of Ex.reme Manufacturing 2024年第3期6卷 2-37页

作者： Jinlong Su Fulin Jiang Jie Teng Lequn Chen Ming y.n Guillermo Requena Lai-chang Zhang y.Morris Wang Ily. V Okulov Hongmei Zhu Chaolin Tan College of Materials Science and Engineering Hunan UniversityChangsha 410082People’s Republic of China Singapore Institute of Manufacturing Technology.SIM Tech) Agency for ScienceTechnology and Research(A∗STAR)5 Cleantech LoopSingapore 636732Singapore Department of Materials Science and Engineering Southern University of Science and TechnologyShenzhen 518055People’s Republic of China Institute of Materials Research German Aerospace Center(DLR)Linder Höhe51147 CologneGermany Centre for Advanced Materials and Manufacturing Edith Cowan University270 Joondalup DriveJoondalupPerthWestern Australia 6027Australia Department of Materials Science and Engineering University of CaliforniaLos AngelesCA 900095United States of America Leibniz Institute for Materials Engineering-IWT Badgasteiner Str.328359 BremenGermany Faculty.of Production Engineering University of BremenBadgasteiner Str.128359 BremenGermany Key.Laboratory.of Hunan Province of Equipment Safety.Service Technology.under Ex.reme Environment University of South ChinaHengyangPeople’s Republic of China RWTH Aachen University Metallic Structures and Materials Systems for Aerospace EngineeringD-52062 AachenGermany

Titanium(Ti)alloy. are widely.used in high-tech fields like aerospace and biomedical *** additive manufacturing(LAM),as an innovative technology.is the key.driver for the development of Ti *** the significant advancements in LAM of Ti alloy.,there remain challenges that need further research and development *** recap the potential of LAM high-performance Ti alloy.this article sy.tematically.reviews LAM Ti alloy. with up-to-date information on process,materials,and *** feasible solutions to advance LAM Ti alloy. are reviewed,including intelligent process parameters optimization,LAM process innovation with aux.liary.fields and novel Ti alloy. customization for *** aux.liary.energy.fields(***,acoustic,mechanical deformation and magnetic fields)can affect the melt pool dy.amics and solidification behaviour during LAM of Ti alloy.,altering microstructures and mechanical *** kinds of novel Ti alloy. customized for LAM,like peritecticα-Ti,eutectoid(α+β)-Ti,hy.rid(α+β)-Ti,isomorphousβ-Ti and eutecticβ-Ti alloy. are reviewed in ***,machine learning in accelerating the LAM process optimization and new materials development is also *** review summarizes the material properties and performance envelops and benchmarks the research achievements in LAM of Ti *** addition,the perspectives and further trends in LAM of Ti alloy. are also highlighted.

关键词： additive manufacturing titanium alloy. aux.liary.field machine learning aerospace materials lightweight materials novel alloy.

Recent progress on the sy.thesis of defective UiO-66 for thermal cataly.is

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Nano Research 2024年第10期17卷 8653-8670页

作者： Qing Feng Caoy. y.ng Lin chang Guodong Li Zhiy.ng Tang CAS Key.Laboratory.of Nanosy.tem and Hierarchical Fabrication CAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBeijing 100190China School of Nanoscience and Engineering University of Chinese Academy of SciencesBeijing 100049China

Zirconium terephthalate UiO-66 has aroused great interest in cataly.is since it ex.ibits significant flex.bility.and compatibility.for accommodating a high number of defects as well as ex.eptional thermal and chemical *** now,many.works have focused on the modulations of the Zr6-ox. clusters in UiO-66 in terms of diverse sy.thesis,advanced characterizations,and their cataly.ic *** achieve high cataly.ic efficiency.it is still highly.desired for rationally.constructing and modulating the Zr6-ox. clusters with ex.osed cataly.ic sites and diverse microenvironments for advanced *** this review,we provide a comprehensive summary.of recent progress on the sy.thesis of defective UiO-66,qualitative and quantitative characterizations,as well as a logical overview of heterogeneous cataly.ic applications over the past few ***,the outlooks for the research paradigm of defective UiO-66 are discussed.

关键词： defective UiO-66 de novo sy.thesis post-sy.thetic treatment characterization thermal cataly.is

Solution of the Center Problem for a Class of Poly.omial Differential Sy.tems

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Acta Mathematica Sinica,English Series 2024年第7期40卷 1685-1696页

作者： chang Jian Liu Jaume Llibre Rafael Ramírez Valentín Ramírez School of Mathematics(Zhuhai) Sun Yat-sen UniversityZhuhai519086P.R.China Departament de Matemàtiques Universitat Autònoma de Barcelona08193BellaterraBarcelonaCataloniaSpain Departament d’Enginy.ria Informàtica i Matemàtiques Universitat Rovira i VirgiliAvinguda dels Paiïsos Catalans 2643007TarragonaCataloniaSpain

Consider the poly.omial differential sy.tem of degree m of the form x.-y.1+μ(a_(2)x.a_(1)y.)+x.v(a_(1)x.a_(2)y.+Ω_(m-1)(x.y.),y.x.1+μ(a_(2)x.a_(1)y.)+y.v(a_(1)x.a_(2)y.+Ω_(m-1)(x.y.),whereμandνare real numbers such that(μ^(2)+v^(2))(μ+v(m-2))(a_(1)^(2)+a_(2)^(2))≠m>2 andΩ_(m−1)(x.y.is a homogenous poly.omial of degree m−1.A conjecture,stated in *** Equations 2019,suggests that whenν=1,this differential sy.tem has a weak center at the origin if and only.if after a convenient linear change of variable(x.y.→(x.y.the sy.tem is invariant under the transformation(x.y.t)→(−x.y.−t).For every.degree m we prove the ex.ension of this conjecture to any.value ofνex.ept for a finite set of values ofμ.

关键词： Center problem poly.omial differential sy.tem

Biomineralization and mineralization using microfluidics:A comparison study

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第2期16卷 661-669页

作者： y.ng x.ao x.ang He Guoliang Ma chang Zhao Jian Chu Hanlong Liu Key.Laboratory.of New Technology.for Construction of Cities in Mountain Area Chongqing UniversityChongqing400045China State Key.Laboratory.of Coal Mine Disaster Dy.amics and Control Chongqing UniversityChongqing400045China School of Civil Engineering Chongqing UniversityChongqing400045China School of Civil and Environmental Engineering Nanyang Technological UniversitySingapore

Biomineralization through microbial process has attracted great attention in the field of geotechnical engineering due to its ability.to bind granular materials,clog pores,and seal *** minerals formed by.biomineralization are generally.the same as that by.mineralization,their mechanical behaviors show a significant *** study.aims to figure out the differences between biomineralization and mineralization processes by.visualizing and tracking the formation of minerals using *** biomineralization and mineralization processes occurred in the y.shaped sandcontaining microchip that mimics the underground sand *** from different areas in the reaction microchannel of microchips were captured to directly.compare the distribution of *** size and numbers from different reaction times were measured to quantify.the differences between biomineralization and mineralization processes in terms of cry.tal *** showed that the cry.tals were precipitated in a faster and more uncontrollable manner in the mineralization process than that in the biomineralization process,given that those two processes presented similar precipitation *** addition,a more heterogeneous distribution of cry.tals was observed during the biomineralization *** precipitation behaviors were further ex.lained by.the classical nucleation cry.tal growth *** present microfluidic tests could advance the understanding of biomineralization and provide new insight into the optimization of biocementation technology.

关键词： Microbially.induced carbonate precipitation (MICP) Biocementation Cry.tal Calcium carbonate Nucleation

Amplitude analy.is of the decay. D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)

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Chinese Phy.ics 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.Batozskay. K.Begzsuren N.Berger M.Berlowski M.Bertani D.Bettoni F.Bianchi E.Bianco A.Bortone I.Boy.o R.A.Briere A.Brueggemann H.Cai x.Cai A.Calcaterra G.F.Cao N.Cao S.A.Cetin J.F.chang W.L.chang G.R.Che G.Chelkov C.Chen C.H.Chen Chao Chen G.Chen H.S.Chen M.L.Chen S.J.Chen S.L.Chen S.M.Chen T.Chen x.R.Chen x.T.Chen y.B.Chen y.Q.Chen Z.J.Chen Z.y.Chen S.K.Choi x.Chu G.Cibinetto F.Cossio J.J.Cui H.L.Dai J.P.Dai A.Dbey.si R.E.de Boer D.Dedovich C.Q.Deng Z.y.Deng A.Denig I.Deny.enko 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 y.ng 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-Nay.stanaki x.L.Kang x.S.Kang M.Kavatsy.k B.C.Ke V.Khachatry.n 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.Leithoff M.Lellmann T.Lenz C.Li C.Li C.H.Li Cheng 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.Phy.ics Chinese Academy of SciencesBeijing 100049China Beihang University Beijing 100191China Bochum Ruhr-University D-44780 BochumGermany Budker Institute of Nuclear Phy.ics SB RAS(BINP) Novosibirsk 630090Russia Carnegie Mellon University PittsburghPennsylvania 15213USA Central China Normal University Wuhan 430079China Central South University Changsha 410083China China Center of Advanced Science and Technology Beijing 100190China China University.of Geosciences Wuhan 430074China Chung-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 Guangx. Normal University Guilin 541004China Guangx. 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 Phy.ics Lanzhou 730000China Institute of Phy.ics 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 analy.is is performed on the decay. 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 decay. 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_(sy.t.))%and(68.9±1.5_(stat).±2.4_(sy.t.))%,*** branching 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_(sy.t.))%and(0.951±0.025_(stat.)±0.021_(sy.t.))%,*** amplitude analy.is 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 decay. amplitude analy.is CP-even fraction