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Bismuth-based halide double perovskite cs_(2)KBicl_(6): disorder and luminescence

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chinese chemical letters 2024年第5期35卷 504-508页

作者： Pan liu yanming Sun Alberto j.Fernández-carrión Bowen zhang hui Fu lunhua he Xing Ming congling yin Xiaojun Kuang MOE Key laboratory of new Processing Technology for nonferrous Metal and Materials Guangxi Key Laboratory of Optic and Electronic Materials and DevicesCollege of Materials Science and EngineeringGuilin University of TechnologyGuilin 541004China Analytical Instrumentation center College of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China Spallation neutron Source Science center Dongguan 523803China chinese Academic of Science Institute of PhysicsBeijing National Laboratory for Condensed Matter PhysicsBeijing 100190China Songshan lake Materials laboratory Dongguan 523808China college of Science Guilin University of TechnologyGuilin 541004China college of chemistry and Bioengineering Guilin University of TechnologyGuilin 541004China

A new bismuth-based halide double perovskite cs_(2)KBicl_(6) was isolated successfully through solid-state reactions and investigated using X-ray and neutron *** than an ordered structure,the crystal structure consists of shifted cs,K,Bi,and cl sites from the ideal positions with fractional occupancy in compensation,leading to variable local coordination of cs^(+)ions,as revealed by^(133)cs solid-state nuclear magnetic resonance ***_(2)KBicl_(6) displays volume hysteresis at 5-298 K range upon heating and *** cs_(2)KBicl_(6) has a direct bandgap of 3.35(2)eV and red-shift luminescence of around 600 nm upon Mn doping compared with the na *** stabilization of disordered structure in cs_(2)KBicl_(6) is related to two factors including the large-sized K^(+)cation which prefers to coordinate with more than six cl^(-),and the Bi^(3+)with 6s^(2) lone pair which has a preference for a local asymmetric *** findings could have general application and help to understand the structure and property of halide perovskites.

关键词： halide perovskite double perovskite luminescence disordered structure direct bandgap

Optimizing laser coupling,matter heating,and particle acceleration from solids using multiplexed ultraintense lasers

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Matter and Radiation at Extremes 2024年第4期9卷 16-28页

作者： weipeng yao Motoaki nakatsutsumi Sébastien Buffechoux Patrizio Antici Marco Borghesi Andrea ciardi Sophia n.chen Emmanuel d’humières laurent Gremillet Robert heathcote Vojtech horny Paul McKenna Mark n.Quinn lorenzo Romagnani Ryan Royle Gianluca Sarri yasuhiko Sentoku hans-Peter Schlenvoigt Toma Toncian Olivier Tresca laura Vassura Oswald willi julien Fuchs lUlI-cnRS CEASorbonne UniversitéEcole PolytechniqueInstitut Polytechnique de ParisF-91128 Palaiseau CedexFrance Sorbonne Université Observatoire de ParisUniversité PSLCNRSLERMAF-75005 ParisFrance InRS-EMT 1650 BoulLionel-BouletVarennesQuebec J3X 1S2Canada center for Plasma Physics School of Mathematics and PhysicsQueen’s University BelfastBelfast BT71NNUnited Kingdom “horia hulubei”national Institute for Physics and nuclear Engineering 30 Reactorului StreetRO-077125 Bucharest-MagureleRomania University of Bordeaux Centre Lasers Intenses et ApplicationsCNRSCEAUMR 5107F-33405 TalenceFrance cEA DAMDIFF-91297 ArpajonFrance Université Paris-Saclay CEALMCE91680 Bruyères-le-ChatelFrance central laser Facility STFC Rutherford Appleton LaboratoryDidcotUnited Kingdom SUPA Department of PhysicsUniversity of StrathclydeGlasgow G40NGUnited Kingdom department of Physics University of NevadaRenoNevada 89557USA Institute of laser Engineering Osaka University2-6 YamadaokaSuitaOsaka 565-0871Japan Institut fur laser und Plasmaphysik Heinrich Heine Universitat DusseldorfDusseldorfGermany

Realizing the full potential of ultrahigh-intensity lasers for particle and radiation generation will require multi-beam arrangements due to technology ***,we investigate how to optimize their coupling with solid ***,we show that overlapping two intense lasers in a mirror-like configuration onto a solid with a large preplasma can greatly improve the generation of hot electrons at the target front and ion acceleration at the target *** underlying mechanisms are analyzed through multidimensional particle-in-cell simulations,revealing that the self-induced magnetic fields driven by the two laser beams at the target front are susceptible to reconnection,which is one possible mechanism to boost electron *** addition,the resistive magnetic field generated during the transport of the hot electrons in the target bulk tends to improve their *** simulations also indicate that such effects can be further enhanced by overlapping more than two laser beams.

关键词： laser acceleration particle

First 150 years of catatonia:looking back at its complicated history and forward to the road ahead

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world journal of Psychiatry 2024年第5期14卷 600-606页

作者： levente csihi Gabor S Ungvari Stanley n caroff Gábor Gazdag department of Psychiatry and Psychiatric Rehabilitation Jahn Ferenc South Pest HospitalBudapest 1204Hungary division of Psychiatry School of MedicineUniversity of Western AustraliaCrawley 6009Western AustraliaAustralia Section of Psychiatry University of Notre DameFremantle 6160Western AustraliaAustralia Behavioral health Service Corporal Michael J CresenczVeterans Affairs Medical CenterPhiladelphiaPA 19104United States department of Psychiatry University of PennsylvaniaPerelman School of MedicinePhiladelphiaPA 19104United States department of Psychiatry and Psychotherapy Faculty of MedicineSemmelweis UniversityBudapest 1083Hungary

Karl ludwig Kahlbaum(1828-1899)was the first to conceptualize and describe the main clinical features of a novel psychiatric illness,which he termed catatonia in his groundbreaking monograph published 150 years *** Kahlbaum postulated catatonia as a separate disease entity characterized by psychomotor symptoms and a cyclical course,a close examination of his 26 cases reveals that most of them presented with motor symptom complexes or syndromes associated with various psychiatric and medical *** his classification system,Kraepelin categorized catatonic motor symptoms that occur in combination with psychotic symptoms and typically have a poor prognosis within his dementia praecox(schizophrenia)disease *** of the substantial influence of Kraepelin’s classification,catatonia was predominantly perceived as a component of schizophrenia for most of the 20th ***,with the advent of the psychopharmacotherapy era starting from the early 1950s,interest in catatonia in both clinical practice and research subsided until the early *** past two decades have witnessed a resurgence of interest in *** diagnostic and Statistical Manual of Mental disorders Fifth Edition,marked a paradigmatic shift by acknowledging that catatonia can occur secondary to various psychiatric and medical *** introduction of an independent diagnostic category termed“catatonia not Otherwise Specified”significantly stimulated research in this *** authors briefly review the history and findings of recent catatonia research and highlight promising directions for future exploration.

关键词： catatonia historical overview Psychopharmacology diagnostic and Statistical Manual of Mental disorders-5 wernicke-Kleist-leonhard school

Anisotropy of the wear Behavior for carbon nanotube-Reinforced 6061Al composites

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Acta Metallurgica Sinica(English letters) 2023年第5期36卷 814-826页

作者： X.n.li j.F.zhang w.h.xue K.Ma P.y.li z.y.liu B.l.Xiao d.R.ni Q.z.wang d.wang z.y.Ma School of Materials Science and Engineering University of Science and Technology of ChinaShenyang110016China Shi-changxu Innovation center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang110016China

carbon nanotube(cnT)-reinforced 6061Al(cnT/6061Al)composites with directionally aligned cnT were fabricated,and their wear behavior was *** results indicate that the wear properties of cnT/6061Al composites exhibited a significant anisotropy.A certain cnT concentrations(1 wt%and 2 wt%)could effectively improve the wear resistance of cnT/6061Al composites along the cnT circumferential and cnT radial directions for the load transfer,grain refinement and self-lubrication effect of *** Brass{011}andntextures inhibited the load transfer effect of cnT along the cnT radial direction,resulting in a better wear resistance along cnT circumferential direction than cnT radial *** the cnT axial direction,the weak deformability of composites caused by the intensifyingfiber texture was the main reasons for the poor wear resistance of cnT/6061Al composites with increasing cnT concentration.

关键词： carbon nanotube Metal matrix composite wear Anisotropy

chronic disease patients have fewer social contacts:A pilot survey with implications for transmission dynamics

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Infectious disease Modelling 2024年第3期9卷 926-930页

作者： j.Vanderlocht S.Møgelmose K.Van Kerckhove P.Beutels n.hens Interuniversity Institute of Biostatistics and Statistical Bioinformatics Data Science InstituteHasselt UniversityHasseltBelgium centre for health Economic Research and Modelling Infectious diseases University of AntwerpAntwerpBelgium

non-communicable diseases(ncd)are the most important cause of death in the *** socio-economic costs associated with ncds makes it imperative to prevent and control them in the 21st *** severe toll that the cOVId-19 pandemic has taken worldwide is an unfortunate illustration of our limited insight into the infectious risk for the global ***-incidence between ncd and infection offers an underexplored opportunity to design preventive *** a pilot survey,we observed that the ncd population displays a substantial reduction in their social contacting behavior as compared to the general *** indicates that existing mathematical models based on contact surveys in the general population are not applicable to the ncd population and that the risk of acquiring an infection following a contact is probably *** demonstration of reduced social mixing in several chronic conditions,raises the question to what extent the social mixing is influenced by the burden of *** advocate the design of disease-specific contact surveys to address how the burden of disease associates with social contact behavior and the risk of *** SARS-coV-2 pandemic offers an unprecedented opportunity to gain insight into the importance of infection in the ncd population and to find ways to improve healthcare procedures.

关键词： survey mixing insight

重症监护室护士限制治疗努力的能力:整合性综述

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International journal of nursing Sciences 2024年第1期11卷 143-154,I0003页

作者： Elvia R.lopez-Panza Vanessa c.Pacheco-Roys Kelly j.Fernandez-Ahumada diana c.díaz-Mass María y.Exposito-concepcion Elizabeth Villarreal-cantillo cesar I.Aviles Gonzalez nursing department Universidad del NorteBarranquillaColombia nursing Program Faculty of Health SciencesUniversidad Popular del CesarValleduparColombia clínica Valledupar ValleduparColombia hospital Universidad del norte SoledadColombia department of Medical Sciences and Public health University of CagliariCittadella Universitaria di MonserratoCagliariItaly

目的在重症监护病房(IntensivecareUnit,IcU),护土难免会遇到需要限制治疗努力(limiting therapeutie efort,lTE)的患者,尽管多数护士还缺乏为这些临终患者及其家庭提供支持的准备。本综述旨在描述IcU护士在lTE中需要具备的能力。方法对... 详细信息

目的在重症监护病房(IntensivecareUnit,IcU),护土难免会遇到需要限制治疗努力(limiting therapeutie efort,lTE)的患者,尽管多数护士还缺乏为这些临终患者及其家庭提供支持的准备。本综述旨在描述IcU护士在lTE中需要具备的能力。方法对2010年--2023年发表的文献进行综述。系统检索了5个数据库:Medline、wiley Online library、SciElO、Sciencedirect和web of Science。使用关键评估项目工具西班牙语版(critical Appraisal Skills Programme in Spanish,cASPe)作为评判性阅读工具。使用牛津循证医学中心(center for Evidence-Based Medicine.,cEBM)评估工具确定证据级别和推荐强度。结果共纳入25篇文献。IcU护士lTE护理的能力包括对患者的直接护理、以家庭为中心的护理以及护士在团队中的作用。该综述确定了3个类别的能力:作为患者、家庭与跨学科团队之间维护者的能力,在lTE方面的决策能力,在患者生命末期治疗和护理干预的能力。结论IcU护士在lTE方面需要具备相应的能力,这对患者的生活质量死亡尊严以及患者家庭应对悲伤的全面支持至关重要。

关键词：重症监护家庭支持重症监护病房护士的作用安宁疗护专业能力

A shift in redox conditions near the Ediacaran/cambrian transition and its possible influence on early animal evolution,corumbáGroup,Brazil

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Geoscience Frontiers 2024年第4期15卷 148-158页

作者： Fabricio A.caxito Erik Sperling Gabriella Fazio Rodrigo Rodrigues Adorno Matheus denezine dermeval Aparecido do carmo Martino Giorgioni Gabriel j.Uhlein Alcides n.Sial cPMTc Research center and Programa de Pós-graduação em Geologia Departamento de GeologiaInstituto de GeociênciasUniversidade Federal de Minas GeraisBelo HorizonteMG 31270-901Brazil department of Earth and Planetary Sciences Doerr School of SustainabilityStanford UniversityCA 94305USA Instituto de Geociências Universidade de BrasíliaBrasíliaDF 70910-900Brazil center for Applied Geosciences(cGA)of the Geological Survey of Brazil(SBG/cPRM) BrasíliaDistrito Federal 70040-904Brazil nEG lABISE Universidade Federal de PernambucoRecife-PE 50740-530Brazil

The Ediacaran-cambrian transition witnessed some of the most important biological,tectonic,climatic and geochemical changes in Earth's *** utmost importance for early animal evolution is the likely shift in redox conditions of bottom waters,which might have taken place in distinct pulses during the late Ediacaran and early *** track redox changes during this transition,we present new trace element,total organic carbon and both inorganic and organic carbon isotopes,and the first iron speciation data on the Tamengo and Guaicurus formations of the corumbáGroup in western Brazil,which record important paleobiological changes between 555 Ma tohically older Tamengo Formation is composed mainly of limestone with interbedded marls and mudrocks,and bears fragments of upper Ediacaran biomineralized fossils such as cloudina lucianoi and corumbella *** younger Guaicurus Formation represents a regional transgression of the shallow carbonate platform and is composed of a homogeneous fine-grained siliciclastic succession,bearing meiofaunal bilateral *** new iron speciation data reveal predominantly anoxic and ferruginous(non-sulfidic)bottom water conditions during deposition of the Tamengo Formation,with FehR/FeT around 0.8 and FePy/FehR below *** transition from the Tamengo to the Guaicurus Formation is marked by a stratigraphically rapid drop in FehR/FeT to below 0.2,recording a shift to likely oxic bottom waters,which persist ***-sensitive element(RSE)concentrations are muted in both formations,but consistent with non-sulfidic bottom water conditions *** interpret the collected data to reflect a transition between two distinct paleoenvironmental *** Tamengo Formation represents an environment with anoxic bottom waters,with fragments of biomineralized organisms that lived on shallower,proba-bly mildly oxygenated surficial waters,and that were then transported *** to coeval suc

关键词： Atmospheric oxygenation Gondwana Redox proxies Iron speciation Ediacaran biota Redox-sensitive elements

Spectral and Timing Analysis of the Black hole Transient MAXI j1631–479 during its 2019 Outburst Observed with Insight-hXMT

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Research in Astronomy and Astrophysics 2022年第11期22卷 21-33页

作者： yu-cong Fu l.M.Song G.Q.ding S.n.zhang j.l.Qu S.zhang l.zhang Q.c.Bu y.huang X.Ma z.X.yang y.l.Tuo X.F.lu d.K.zhou B.y.wu T.M.li y.c.Xu Xinjiang Astronomical Observatory Chinese Academy of SciencesUrumqiXinjiang 830011China University of chinese Academy of Sciences Chinese Academy of SciencesBeijing 100049China Key laboratory of Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China Institut fur Astronomie und Astrophysik Kepler Center for Astro and Particle PhysicsEberhard Karls UniversitatSand 1D-72076 TübingenGermany

we report spectral and timing analysis of the black hole transient MAXI j1631–479 during the hard intermediate state of its 2019 outburst from the Insight-hard X-ray Modulation Telescope(Insight-hXMT)*** find that the energy dependence of the type-c quasi-periodic oscillation(QPO)frequency evolves with time:during the initial rise of a small flare(~Mjd 58526.0-58527.1),the QPO frequency increases with increasing energy from~1 to~100 ke V,and then the frequency remains constant after Mjd *** discover a possible new phenomenon of Fe line’s QPO frequency jump that has never been observed for other black hole transients:during the small flare,the QPO frequency around the Fe line energy is higher than any other energy band,with the frequency difference Δf=0.25±0.08 hz between 5.5–7.5 ke V and other energy *** spectral analysis shows that the evolution of QPOs is related to the equivalent width of the narrow Fe line,and its equivalent width increases during this small *** propose that the QPO frequency difference results from the differential precession of a vertically extended jet,and the higher QPO frequency of Fe line could be caused by the layered jet when the jet scale *** the same time,the evolution of QPOs is related to the accretion rate,while the energy dependence of QPOs supports the existence of deceleration in the vertically distributed jet.

关键词： accretion accretion disks stars:black holes X-rays:binaries

nonlinear Transient Response of Functionally Graded Material Sandwich doubly curved Shallow Shell Using new displacement Field

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Acta Mechanica Solida Sinica 2018年第1期31卷 108-126页

作者： z.n.li y.X.hao w.zhang j.h.zhang college of Mechanical Engineering Beijing Information Science and Technology University college of Mechanical Engineering Beijing University of Technology

In this paper, the nonlinear transient dynamic response of functionally graded material （FGM） sandwich doubly curved shell with homogenous isotropic material core and functionally graded face sheet is analyzed using a new displacement field on the basis of Reddy＇s third-order shear theory for the first time. The equivalent material properties for the FGM face sheet are assumed to obey the rule of simple power law function in the thickness direction. Based on Reddy＇s theory of higher shear deformation, a new displacement field is developed by introducing the secant function into transverse displacement. Four coupled nonlinear differential equations are obtained by applying hamilton＇s principle and Galerkin method. It is assumed that the FGM sandwich doubly curved shell is subjected to step loading, air-blast loading, triangular loading, and sinusoidal loading, respectively. On the basis of double-precision variable- coefficient ordinary differential equation solver, a new program code in FORTRAn software is developed to solve the nonlinear transient dynamics of the system. The influences of core thickness, volume fraction, core-to-face sheet thickness ratio, width-to-thickness ratio and blast type on the transient response of the shell are discussed in detail through numerical simulation.

关键词： new displacement fields Functionally graded materials Sandwich doubly curvedshell Blast load nonlinear transient response