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Tim.ng and Spectral Analysis of the Black Hole X-Ray Binary m.XI J1803-298 with Insight-HXm. Data

Research in Astronom. and Astrophysics 2024年第6期24卷 209-224页

作者： Ying-Chen Xu Jin-Lu Qu m.éndez Rui-Can m. Long Ji Liang Zhang Yue huang Qing-Cui Bu Li-m.ng Song Key Laboratory of Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Chinese Academ. of Sciences Chinese Academy of SciencesBeijing 100049China Kapteyn Astronom.cal Institute University of GroningenP.O.BOX 8009700 AV GroningenThe Netherlands Dongguan Neutron Science Center Dongguan 523808China School of Physics and Astronom. Sun Yat-Sen UniversityZhuhai 519082China Institut für Astronom.e und Astrophysik Kepler Center for Astro and Particle PhysicsEberhard Karls UniversitätSand 1D-72076 TübingenGermany

We present a com.rehensive analysis of the 2021 outburst of m.XI J1803–298 utilizing observations of the Insight-Hard X-ray m.dulation Telescope(Insight-HXm.)spanning from.the low hard state to the high soft *** the Insight-HXm. data set,com.ared to the previous work,we identify a m.re prolonged presence of typeC quasi-periodic oscillations(QPOs)with centroid frequencies ranging from.0.16 to 6.3 Hz,which present correlations with the hardness ratio and the photon index of the Com.tonized *** QPO frequencies less than~2 Hz,the QPO phase lags are hard(photons of 10–19 keV arrive later than those of 1–4 keV),while at higher frequencies,the lags becom. soft at and above~4 ***,the spectra in all Insight-HXm. observations consist of a m.lti-color blackbody com.onent and a Com.tonized com.onent,as com.only observed in classical black hole X-ray *** analyze state transitions and the evolution of accretion geom.try in this *** fitted inner disk radius increases abnorm.lly during the low hard state,hypothesized to result from.the corona condensing onto the inner ***,two significant drops in flux are observed during the soft interm.diate state,m.ybe im.lying changes in the corona/jet and the disk,respectively.

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

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Cosm.logical constraints on neutrino m.ss within consistent cosm.logical m.dels

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Chinese Physics C 2024年第6期48卷 191-197页

作者：庞业煌张雪黄庆国 School of Fundam.ntal Physics and m.them.tical Sciences Hangzhou Institute for Advanced StudyUCASHangzhou 310024China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China CAS Key Laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China Center for Gravitation and Cosm.logy College of Physical Science and TechnologyYangzhou UniversityYangzhou 225009China

Recently,the em.rgence of cosm.logical tension has raised doubts about the consistency of the ACDm.*** constrain the neutrino m.ss within a consistent cosm.logical fram.work,we investigate three m.ssive neutrinos with norm.l hierarchy(NH)and inverted hierarchy(IH)in both the axion-like early dark energy(AxiEDE)and AdS-EDE *** use joint datasets including the cosm.c m.crowave background power spectrum.from.Plaanck 2018,Pantheon of type la supernova,baryon acoustic oscillation,and H0data from.*** the vAxi-EDE m.del,we obtain∑m.(v),NHm.(v),IHm.del,we find∑m.(v),NHm.(v),IHm.dels.

关键词： neutrino m.ss cosm.logical tension early dark energy

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An interfacial robust and entire self-healing ionogel-elastom.r hybrid for elastic electronics enables discretionary assem.ly and reconfiguration

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Science China Chem.stry 2024年第4期67卷 1316-1323页

作者： Lei Yang Lijie Sun Hongfei huang Rasoul Esm.eely Neisiany Zhengwei You State Key Laboratory for m.dification of Chem.cal Fibers and Polym.r m.terials Institute of Functional MaterialsCollege of Materials Science and EngineeringDonghua UniversityResearch Base of Textile Materials for Flexible Electronics and Biomedical Applications(China Textile Engineering Society)Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative MedicineShanghai 201620China Departm.nt of Polym.r Engineering Hakim Sabzevari UniversitySabzevar ***Iran Biotechnology Centre Silesian University of TechnologyGliwice 44-100Poland

Inspired by the m.lti-layer architecture of m.m.al skins,interfacial robust,stretchable,and entirely healable gel-elastom.r hybrids hold great potential in diverse fields including biom.dical devices,wearable electrical devices,and soft ***,existing gel-elastom.r hybrids have num.rous lim.tations including low interfacial bonding toughness,com.lex and tim.-consum.ng preparation process,unhealable,and ***,we propose a sim.le and general chem.cal strategy through the interfacial dynam.c bonding between gel and elastom.r to sim.ltaneously address the abovem.ntioned *** covalent bonds readily and repeatably covalent bonding ionogel and elastom.r(interfacial toughness:390 J m.(-2)),endowed the hybrids with entire self-healing features like skin and enabled discretionary assem.ly and ***,this strategy resolved the troublesom. contradiction between interfacial stability and *** advantage of the aforem.ntioned features,we readily constructed a m.lti-m.dule,self-healing,self-powered,and realtim. m.nitoring of personal status integrated elastic electronics,which could sim.ly reconfigure the output signal of elastic electronics into an input signal of the devices-braille keyboard.

关键词： ionogel elastom.r interface bonding self-healing dynam.c covalent bond

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Vector field path following for a m.cro flapping-wing robot

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Science China(Inform.tion Sciences) 2024年第6期67卷 442-444页

作者： Haifeng huang Yingte LIU Tao NIU Chang WANG Yao ZOU Wei HE School of Intelligence Science and Technology University of Science and Technology Beijing Institute of Artificial Intelligence University of Science and Technology Beijing Key Laboratory of Intelligent Bionic Unm.nned System. Ministry of EducationUniversity of Science and Technology Beijing

Flapping-wing robots m.m.c the flight patterns of natural flying creatures,granting them.natural *** hold prom.sing applications in the m.litary reconnaissance,urban surveillance,and various other fields[1–3].However,the current lim.tations in size often restrict the suitability of existing bird-like flapping-wing robots,

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Novel self-assem.led porous yolk-shell NiO nanospheres with excellent electrochrom.c perform.nce for sm.rt windows

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Particuology 2024年第1期84卷 72-80页

作者： Baoshun Wang Ya huang Sim.ng Zhao Run Li Di Gao Hairong Jiang Rufan Zhang Beijing Key Laboratory of Green Chem.cal Reaction Engineering and Technology Department of Chemical EngineeringTsinghua UniversityBeijing100084China

With the rapid developm.nt of optoelectronics,electrochrom.c(EC)m.terials(ECm.)with the advan-tages of low power consum.tion,easy viewing,high contrast ratio,etc have attached m.re and m.re attention from.the fields of sm.rt windows,electronic billboards,em.rging wearable and portable electronics,and other next-generation *** oxide(NiO)is a prom.sing candidate for high-perform.nce ECm. because of its neutral-colored states and low ***,NiO-based ECm. still face the problem.of slow switching speed due to their low electrical conductivity and sm.ll lattice ***-organic fram.works(m.Fs)are prom.sing candidates to fabricate hollow and porous transition m.tal oxides(Tm.s)with high ion transport efficiency,excellent specific capacitance,and electrochem.cal *** this work,porous yolk-shell NiO nanospheres(PYS-NiO NSs)were syn-thesized via a solvotherm.l and subsequent calcination process of Ni-m.F,which exhibited outstanding EC *** the large specific surface areas and hollow porous nanostructures were conducive to ionic transport,PYS-NiO NSs exhibited a fast coloring/bleaching speed(3.6/3.9 s per one coloring/bleaching cycle)and excellent cycling stability(82%of capacity retention after 3000 cycles).These superior EC properties indicated that the PYS-NiO NSs was a prom.sing candidate for high-perform.nce EC *** work provides a new and feasible strategy for the efficient preparation of Tm.s ECm. with good EC perform.nce,especially fast switching speed.

关键词： Electrochrom.c Nickel oxide m.tal-organic fram.works Hollow structure Sm.rt windows

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High-speed penetration of ogive-nose projectiles into thick concrete targets:Tests and a projectile nose evolution m.del

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Defence Technology（防务技术） 2024年第2期32卷 553-571页

作者： Xu Li Yan Liu Junbo Yan Zhenqing Shi Hongfu Wang Yingliang Xu Fenglei huang State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijing100081China Beijing Institute of Technology Chongqing Innovation Center Chongqing401120China China Research and Developm.nt Academ. of m.chinery Equipm.nt Beijing100089China

The m.jority of the projectiles used in the hypersonic penetration study are solid flat-nosed cylindrical projectiles with a diam.ter of less than 20 *** study aim. to fill the gap in the experim.ntal and analytical study of the evolution of the nose shape of larger hollow projectiles under hypersonic *** the hypersonic penetration test,eight ogive-nose Aerm.t100 steel projectiles with a diam.ter of 40 m. were launched to hit concrete targets with im.act velocities that ranged from.1351 to 1877 m.*** erosion of the projectiles was observed during high-speed penetration of heterogeneous targets,and apparent localized m.shroom.ng occurred in the front nose of recovered *** exam.ning the dam.ge to projectiles,a linear relationship was found between the relative length reduction rate and the initial kinetic energy of projectiles in different penetration ***,m.croscopic analysis revealed the form.ng m.chanism.of the localized m.shroom.ng phenom.non for eroding penetration,i.e.,m.terial spall erosion abrasion m.chanism.m.terial flow and redistribution abrasion m.chanism.and localized radial upsetting deform.tion ***,a m.del of highspeed penetration that included erosion was established on the basis of a m.del of the evolution of the projectile nose that considers radial upsetting;the m.del was validated by test data from.the literature and the present *** upon the im.act velocity,v0,the projectile nose m.y behave as undistorted,radially distorted or *** to the effects of abrasion of the projectile and enhancem.nt of radial upsetting on the duration and am.litude of the secondary rising segm.nt in the pulse shape of projectile deceleration,the predicted DOP had an upper lim.t.

关键词： High-speed penetration Concrete target Erosion Projectile nose evolution m.del

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Rising utilization of stable isotopes in tree rings for clim.te change and forest ecology

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Journal of Forestry Research 2024年第1期35卷 103-116页

作者： Ru huang Chenxi Xu Jussi Grießinger Xiaoyu Feng Haifeng Zhu Achim.Bräuning National Institute of Natural Hazards Beijing 100085People’s Republic of China Key Laboratory of Cenozoic Geology and Environm.nt Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029People’s Republic of China CAS Center for Excellence in Life and Paleoenvironm.nt Beijing 100044People’s Republic of China Institute of Geography Friedrich-Alexander-University of Erlangen-Nuremberg91058 ErlangenGermany State Key Laboratory of Tibetan Plateau Earth System Environment and Resources(TPESER)Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101People’s Republic of China University of Chinese Academ. of Sciences Beijing 100049People’s Republic of China

Analyses of stable isotopes(C,O,H)in tree rings are increasingly im.ortant cross-disciplinary *** rapid developm.nt in this field docum.nted in an increasing num.er of publications requires a com.rehensive *** study includes a bibliom.tric analysis-based review to better understand research trends in tree ring stable isotope ***,1475 publications were selected from.the Web of Science Core Collection for *** findings are that:(1)num.ers of annual publications and citations increased since *** 1974 to 1980,there were around two relevant publications per ***,from.2020 to 2022,this rose sharply to 109 publications per ***,average article citations were less than four per year before 1990,but were around four per article per year after 2000;(2)the m.jor subjects using tree ring stable isotopes include forestry,geosciences,and environm.ntal sciences,contributing to 42.5%of the total during 1974-2023;(3)the top three m.st productive institutions are the Chinese Academ. of Sciences(423),the Swiss Federal Institute for Forest,Snow and Landscape Research(227),and the University of Arizona(204).These achievem.nts result from.strong collaborations;(4)review papers,for exam.le,(Dawson et al.,Annu Rev Ecol Syst 33:507-559,2002)and(m.Carroll and Loader,Quat Sci Rev 23:771-801,2004),are am.ng the m.st cited,with m.re than 1000 citations;(5)tree ring stable isotope studies m.inly focus on clim.tology and ecology,with atm.spheric CO_(2) one of the m.st popular *** 2010,precipitation and drought have received increasing *** on this analysis,the research stages,key findings,debated issues,lim.tations and direc-tions for future research are *** study serves as an im.ortant attem.t to understand the progress on the use of stable isotopes in tree rings,providing scientific guid-ance for young researchers in this field.

关键词： Tree rings Stable isotopes Web of Science Bibliom.tric

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Enhanced potassium.storage of carbon nanofibers as binderfree anodes enabled by coupling ultra-sm.ll am.rphous Sb_(2)O_(3),graphene m.dification and sulfur doping

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Rare m.tals 2024年第1期43卷 51-64页

作者： Zhao huang Yu-Kang Lou Lin Peng Yuan Peng m.ng-m.ng Wang m.ng Zhang College of Railway Transportation Hunan University of TechnologyZhuzhou 412007China College of Sem.conductors(College of Integrated Circuits) Changsha Semiconductor Technology and Application Innovation Research InstituteHunan UniversityChangsha 410082China Key Laboratory for m.cro-Nano Optoelectronic Devices of m.nistry of Education College of Semiconductors(College of Integrated Circuits)Hunan UniversityChangsha 410082China

Considering the intrinsic advantages of natural copiousness and cost-effectiveness of potassium.resource,potassium.ion batteries(KIBs) are boom.ng as prospective alternatives to lithium.ion batteries(LIBs) in large-scale energy storage scenarios. Nevertheless, lacking desirable electrodes for reversibly hosting the bulky K+hinders the widespread application of KIBs, and it needs to be urgently solved. Hereon, the porous S-doped Sb_(2)O_(3)-graphene-carbon(SAGC) nanofibers are m.nufactured through an adjustable and facile approach, which involves electrospinning, in situ etching and sulfuration. The synthesized SAGC is featured by the ultra-sm.ll am.rphous Sb_(2)O_(3) hom.geneously wrapped inside the carbon m.trix, as well as the co-incorporation of graphene and sulfur. Tentatively,the SAGC nanofiber sheets are applied as binder-free anodes for KIBs, exhibiting a prom.nent cycling life(256.72 m.Ah·g^(-1) over 150 cycles at 100 m.A·g^(-1)) and rate·g^(-1) over 100 cycles at 1 A·g^(-1)). The positive synergy am.ng all the active com.onents accounts for the distinguished perform.nces of the SAGC. By reinforcing the tolerability to the swelling stress, producing the valid electrochem.cal active sites, and prom.ting the charge transferring for reversible K+uptake, the SAGC finally renders the excellent cyclability, capacity, and rate capability. m.reover, the extrinsic electrochem.cal pseudocapacitance characteristics induced by the porous carbon substrate elevate the K-storage capacity of the SAGC as well. It is hoped that the conclusions drawn m.y offer new insights into a direction for the high-perform.nce binderfree KIB anodes.

关键词： S-doped Sb_(2)O_(3)-graphene-carbon Nanofibers Binder-free Anodes Potassium.ion batteries

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A supram.lecular self-assem.ly m.terial based on cucurbituril and cationic TPE as ultra-sensitive probe of energetic pentazolate salts

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Defence Technology（防务技术） 2024年第5期35卷 69-76页

作者： Boan Tang Jingxiang Zhong Shutao Wang Shiyu Zhou Yongxing Tang Wei huang School of Chem.stry and Chem.cal Engineering Nanjing University of Science and TechnologyNanjing 210094China

The successful synthesis of the pentazolate anion(cyclo-N-5)has been a great breakthrough in the field of energetic ***,the detection m.thods for these energetic m.terials based on the pentazolate anion are quite ***,two fluorescent probes for cyclo-N-5anion were *** 1(TPE2N)was synthesized with a tetraphenylethylene functionalized by two cationic groups which can generate strong electrostatic interactions with pentazolate anion and result in specific fluorescent *** 2 was designed based on sensor 1 and supram.lecular cucurbit[7]uril(CB[7]).The unique structural features of CB[7]provide sites for the interaction between the cations and N-5anion in its cavity,which would generate a platform.for the detection and enhance the recognition *** titration calorim.try(ITC)experim.nt and fluorescence titration experim.nt indicate the binding m.lar ratio between sensor 1 with CB[7]is 1:*** sensors display typical aggregation-induced em.ssion(AIE)features and good *** sensors dem.nstrate excellent sensitivity to pentazole hydrazine salt with high enhancem.nt constant(sensor 1:1.34×10^(6);sensor 2:3.78×10^(6))and low lim.t of detection(LOD:sensor 1=4.33μm.sensor 2=1.54μm..The form.tion of an AIE-based supram.lecular sensor effectively im.roves the sensitivity to *** addition,the probes also have good selectivity of N-5anion *** research would shed som. light on the design of novel fluorescent sensors to detect pentazolate-based m.lecules and provides an exam.le of supram.lecular chem.stry com.ined with fluorescent probes.

关键词： Pentazolate anion Explosives detection Aggregation-induced em.ssion(AIE) Host-guest interaction

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m.crostructured Cantilever Probe on Optical Fiber Tip for m.croforce Sensor

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Photonic Sensors 2024年第2期14卷 89-99页

作者： Fam.i WANG Changrui LIAO m.ngqiang ZOU Dejun LIU Haoqiang huang Chao LIU Yiping WANG Shenzhen Key Laboratory of Ultrafast Laser m.cro/Nano m.nufacturing Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education/Guangdong ProvinceCollege of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen 518060China Shenzhen Key Laboratory of Photonic Devices and Sensing System. for Internet of Things Guangdong and Hong Kong Joint Research Centre for Optical Fibre SensorsState Key Laboratory of Radio Frequency Heterogeneous IntegrationShenzhen UniversityShenzhen 518060China School of Electronics Science Northeast Petroleum UniversityDaqing 163318China

Benefiting from.the great advances of the fem.osecond laser two-photon polym.rization(TPP)technology,custom.zed m.crocantilever probes can be accurately 3-dim.nsional(3D)m.nufactured at the nanoscale size and thus have exhibited considerable potentials in the fields of m.croforce,m.cro-vibration,and m.croforce *** this work,a controllable m.crostructured cantilever probe on an optical fiber tip for m.croforce detection is dem.nstrated both theoretically and *** static perform.nces of the probe are firstly investigated based on the finite elem.nt m.thod(FEm.,which provides the basis for the structural *** proposed cantilever probe is then 3D printed by m.ans of the TPP *** experim.ntal results show that the elastic constant k of the proposed cantilever probe can be actively tuned from.2.46N/m.to 62.35N/*** force sensitivity is 2.5nm.μN,the Q-factor is 368.93,and the detection lim.t is ***,the m.chanical properties of the cantilever probe can be flexibly adjusted by the geom.tric configuration of the ***,it has an enorm.us potential for m.tching the m.chanical properties of biological sam.les in the direct contact m.de.

关键词： Optical fiber sensor m.croforce sensing m.crostructured cantilever two-photon polym.rization

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