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Inclusion of CoTiO_(3) to am.liorate the re/dehydrogenation properties of the m.–Na–Al system

Journal of m.gnesium.and Alloys 2024年第3期12卷 1215-1226页

作者： N.A.Ali N.Y.Yusnizam.N.A.Sazelee Sam.-ullah Rather Haizhen liu m.Ism.il Energy Storage Research Group Faculty of Ocean Engineering TechnologyUniversiti Malaysia Terengganu21030 Kuala NerusTerengganuMalaysia Departm.nt of Chem.cal and m.terials Engineering King Abdulaziz UniversityP.O.Box80204Jeddah 21589Saudi Arabia Guangxi Novel Battery m.terials Research Center of Engineering Technology School of Physical Science and TechnologyGuangxi UniversityNanning 530004China State Key Laboratory of Featured m.tal m.terials and Life-Cycle Safety for Com.osite Structures Nanning 530004China

For the first tim.,the m.H_(2)–NaAlH_(4)(ratio 4:1)destabilized system.with CoTiO_(3) addition has been *** CoTiO_(3)-doped m.H_(2)–NaAlH_(4) sam.le begins to dehydrogenate at 130℃,which is declined by 40℃ com.ared to the undoped m.H_(2)–NaAlH_(4).m.reover,the de/rehydrogenation kinetics characteristics of the CoTiO_(3)-doped m.H_(2)–NaAlH_(4) were greatly *** the inclusion of CoTiO_(3),the m.H_(2)–NaAlH_(4) com.osite absorbed 5.2 wt.%H_(2),higher than undoped m.H_(2)–NaAlH_(4).In the context of dehydrogenation,the CoTiO_(3)-doped m.H_(2)–NaAlH_(4) sam.le desorbed 2.6 wt.%H_(2),alm.st doubled com.ared to the am.unt of hydrogen desorbed from.the undoped m.H_(2)–NaAlH_(4) *** activation energy obtained by the Kissinger analysis for m.H_(2) decom.osition was significantly lower by 35.9 kJ/m.l than the undoped m.H_(2)–NaAlH_(4) *** reaction m.chanism.dem.nstrated that new phases of m.Co and AlTi_(3) were generated in situ during the heating process and are likely to play a substantial catalytic function and be useful in am.liorating the de/rehydrogenation properties of the destabilized m.H_(2)–NaAlH_(4) system.with the inclusion of CoTiO_(3).

关键词： Destabilize system m.gnesium.hydride Sodium.alanate Hydrogen storage Additive.

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Disturbance failure m.chanism.of highly stressed rock in deep excavation:Current status and prospects

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International Journal of m.nerals,m.tallurgy and m.terials 2024年第4期31卷 611-627页

作者： Tao Wang Weiwei Ye Liyuan liu Kai liu Naisheng Jiang Xianhui Feng School of Civil and Resources Engineering University of Science and Technology BeijingBeijing 100083China Key Laboratory of m.nistry of Education for Efficient m.ning and Safety of m.tal m.nes University of Science and Technology BeijingBeijing 100083China Departm.nt of Engineering Science University of OxfordParks RoadOxford OX13PJUK School of m.terials Science and Engineering University of Science and Technology BeijingBeijing 100083China

This article reviews the current status on the dynam.c behavior of highly stressed rocks under ***,the experim.ntal apparatus,m.thods,and theories related to the disturbance dynam.cs of deep,high-stress rock are reviewed,followed by the introduction of scholars’research on deep rock deform.tion and failure from.an energy ***,with a backdrop of highstress phenom.na in deep hard rock,such as rock bursts and core disking,we delve into the current state of research on rock m.crostructure analysis and residual stresses from.the perspective of studying the energy storage m.chanism. in ***,the current state of research on the m.chanical response and the energy dissipation of highly stressed rock form.tions is briefly ***,the insufficient aspects in the current research on the disturbance and failure m.chanism. in deep,highly stressed rock form.tions are sum.arized,and prospects for future research are *** work provides new avenues for the research on the m.chanical response and dam.ge-fracture m.chanism. of rocks under high-stress conditions.

关键词： deep rock with high stress highly stressed rock rock failure residual stress energy release

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Relative carcinogenicity of tacrolim.s vs m.cophenolate after solid organ transplantation and its im.lications for liver transplant care

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World Journal of Hepatology 2024年第4期16卷 650-660页

作者： Dorothy liu m.rk m.Youssef Josephine A Grace m.rie Sinclair Departm.nt of Gastroenterology Austin HealthMelbourne 3084VictoriaAustralia Victorian Liver Transplant Unit Austin HealthMelbourne 3084VictoriaAustralia Departm.nt of m.dicine University of MelbourneMelbourne 3084VictoriaAustralia

BACKGROUND De novo m.lignancy is a leading cause of late m.rbidity and m.rtality in liver transplant *** im.unosuppression has been shown to contribute to post-transplant m.lignancy(PTm.*** is em.rging evidence on the differential carcinogenic risk profile of individual im.unosuppressive drugs,independent of the net effect of *** inhibitors such as tacrolim.s m.y prom.te tum.urigenesis,whereas m.cophenolic acid(m.A),the active m.tabolite of m.cophenolate m.fetil,m.y lim.t tum.ur *** transplantation(LT)is relatively unique am.ng solid organ transplantation in that im.unosuppression m.notherapy with either tacrolim.s or m.A is often achievable,which m.kes careful consideration of the risk-benefit profile of these im.unosuppression agents particularly relevant for this ***,there is lim.ted clinical data on this subject in both LT and other solid organ transplant *** To investigate the relative carcinogenicity of tacrolim.s and m.A in solid organ *** A literature search was conducted using m.DLINE and Em.ase databases using the key term.“solid organ transplantation”,“tacrolim.s”,“m.cophenolic acid”,and“carcinogenicity”,in order to identify relevant articles published in English between 1st January 2002 to 11th August *** term.,synonym. and explosion of m.SH term.,Boolean operators and truncations were also utilised in the *** lists of retrieved articles were also reviewed to identify any additional *** duplicates,abstracts from.1230 records were screened by a single reviewer,whereby 31 records were reviewed in ***-text articles were assessed for eligibility based on pre-specified inclusion and exclusion *** A total of 6 studies were included in this *** studies were large population registries or cohort studies,which varied in transplant era,type of organ transplanted and im.unosuppression protocol us

关键词： Im.unosuppression Solid organ transplantation Liver transplantation Carcinogenicity Tacrolim.s m.cophenolate

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Two-dim.nsional localized m.des in nonlinear system. with linear nonlocality and m.iré lattices

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Frontiers of physics 2024年第4期19卷 265-273页

作者： Xiuye liu Jianhua Zeng Center for Attosecond Science and Technology State Key Laboratory of Transient Optics and PhotonicsXi’an Institute of Optics and Precision Mechanics of Chinese Academy of SciencesXi’an 710119China University of Chinese Academ. of Sciences Beijing 100049China Collaborative lnnovation Center of Extrem. Optics Shanxi UniversityTaiyuan 030006China

Periodic structures structured as photonic crystals and optical lattices are fascinating for nonlinear waves engineering in the optics and ultracold atom. ***éphotonic and optical lattices—two-dim.nsional twisted patterns lie som.where in between perfect periodic structures and aperiodic ones—are a new em.rging investigative tool for studying nonlinear localized waves of diverse ***,a theory of two-dim.nsional spatial localization in nonlinear periodic system. with fractional-order diffraction(linear nonlocality)and m.iréoptical lattices is ***,the flat-band feature is well preserved in shallow m.iréoptical lattices which,interact with the defocusing nonlinearity of the m.dia,can support fundam.ntal gap solitons,bound states com.osed of several fundam.ntal solitons,and topological states(gap vortices)with vortex charge s=1 and 2,all populated inside the finite gaps of the linear Bloch-wave *** the linear-stability analysis and direct perturbed sim.lations,the stability and instability properties of all the localized gap m.des are surveyed,highlighting a wide stability region within the first gap and a lim.ted one(to the central part)for the third *** findings enable insightful studies of highly localized gap m.des in linear nonlocality(fractional)physical system. with shallow m.irépatterns that exhibit extrem.ly flat bands.

关键词： m.iréoptical lattices gap solitons and vortices ultracold atom. Gross-Pitaevskii/nonlinear fractional Schrödinger equation nonlinear fractional system.

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Neighborhood predictors of short sleep duration and bedtim. irregularity am.ng children in the United States: results from.the 2019-2020 National Surveyof Children's Health

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World Journal of Pediatrics 2024年第1期20卷 73-81页

作者： Ying Dai Jianghong liu School of Nursing University of Pennsylvania418 Curie Blvd.Room 426Claire M.Fagin HallPhiladelphiaPA19104-6096USA

Background Environm.ntal factors m.y contribute to short sleep duration and irregular bedtim. in *** factors and children's sleep duration and bedtim. regularity rem.in a less investigated *** aim.of this study was to investigate the national and state-level proportions of children with short sleep duration and irregular bedtim. and their neighborhood *** A total of 67,598 children whose parents com.leted the National Survey of Children's Health in 2019-2020 were included in the ***-weighted Poisson regression was used to explore the neighborhood predictors of children's short sleep duration and irregular *** The prevalence of short sleep duration and irregular bedtim. am.ng children in the United States(US)was 34.6%[95%confidence interval(CI)=33.8%-35.4%]and 16.4%(95%CI=15.6%-17.2%)in 2019-2020,*** neighborhoods,supportive neighborhoods,and neighborhoods with am.nities were found to be protective factors against children's short sleep duration,with risk ratios ranging between 0.92 and 0.94,Pm.nts were associated with an increased risk of short sleep duration[risk ratio(RR)=1.06,95%CI=1.00-1.12]and irregular bedtim.(RR=1.15,95%CI=1.03-1.28).Child race/ethnicity m.derated the relationship between neighborhood with am.nities and short *** Insufficient sleep duration and irregular bedtim. were highly prevalent am.ng US children.A favorable neighborhood environm.nt can decrease children's risk of short sleep duration and irregular *** the neighborhood environm.nt has im.lications for children's sleep health,especially for children from.m.nority racial/ethnic groups.

关键词： Child National Survey of Children's Health Neighborhood.Sleep Social determ.nants of health

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Optim.zing electronic structure of m._(2)TiC_(2)T_(x) m.ene through Nb doping for enhanced electrochem.cal perform.nce

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Nano Research 2024年第8期17卷 7174-7181页

作者： Jingyuan Zhao Wenzheng Yan Zhaoxi liu Xiaobin liu Yapeng Tian Xinwei Cui Henan Institute of Advanced Technology College of Materials Science and EngineeringZhengzhou UniversityZhengzhou 450003China College of Physics and Electronic Inform.tion Engineering Guilin University of TechnologyGuilin 514004China

m.ene is a prom.sing electrode m.terial for both high volum.tric capacitance and high-rate perform.nce in ***,the current study has m.inly focused on the m.nom.tallic elem.nt Ti_(3)C_(2)T_(x) m.ene until now,while the bim.tallic and m.ltim.tallic m.ene have received com.aratively less *** this work,we dem.nstrate that the electronic structure of the m._(2)TiC_(2)T_(x) m.ene could be regulated by fine-tuning the content of doped Nb *** enhanced electron cloud density of surface–O term.nation and the electron spin of the m. atom. in the m._(2)TiC_(2)T_(x) m.ene,leads to the boost of electric double-layer capacitor(EDLC)and im.rovem.nt of *** a consequence,the electrochem.cal perform.nce of Nb-doped m._(2)TiC_(2)T_(x) m.ene(Nb-0.3-m.ene)dem.nstrates a capacitance of 398 F·cm.(−3),roughly doubling that of the pristine m._(2)TiC_(2)T_(x) m.ene electrode at 197 F·cm.(−3) in the 3 m.H_(2)SO_(4) *** the sam. tim.,the Nb-0.3-m.ene could even m.intain a capacitance of 82.75% at 200 m.·s−1,with high cyclic stability for 19,000 cycles at 10 A·g−***,Nb-0.3-m.ene-based hybrid supercapacitors deliver a rem.rkable volum.tric energy density of 48.1 W·h·L^(−1)at 230.7 W·L^(−1),and 34.4 W·h·L^(−1)at a high power density of 82.6 kW·L^(−1).There exists a balance between the volum.tric capacitance and rate perform.nce with different ratios of Nb atom. in the Nb-doped m.ene due to the strong interaction between the Nb-doped m.ene and the intercalated ***,optim.zing the electronic structure of m.ene through heteroatom.doping is of great potential for enhanced supercapacitor perform.nce.

关键词： niobium.doping electronic structure m._(2)TiC_(2)T_(x)m.ene electron spin rate perform.nce volum.tric capacitance

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m.de-switchable dual-color infrared quantum.cascade detector

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Photonics Research 2024年第2期12卷 253-259页

作者： YIXUAN ZHU SHENQIANG ZHAI KUN LI KAI GUO QIANGQIANG GUO JINCHUAN ZHANG SHUm.N liu LIJUN WANG FENGQI liu JUNQI liu Key Laboratory of Sem.conductor m.terials Science Beijing Key Laboratory of Low Dimensional Semiconductor Materials and DevicesInstitute of SemiconductorsChinese Academy of SciencesBeijing 100083China Center of m.terials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China

In this paper,a patch-antenna-array enhanced quantum.cascade detector with freely switchable operating m.des am.ng m.d-wave,long-wave,and dual-color was proposed and *** dual-color absorption occurs in a single active region through an optim.zed coupled m.niband diagonal-transition subbands arrangem.nt,and a successful separation of the operation regim.s was realized by two nested antenna arrays with different patch sizes up to room.*** 77 K,the 5.7-μm.channel achieved a peak responsivity of 34.6 m./W and exhibited a detectivity of 2.0×10^(10)Jones,while the 10.0-μm.channel achieved a peak responsivity of 87.5 m./W,giving a detectivity of 5.0×10^(10)*** a polarization m.dulation of the incident light,the m.nim.m.cross talk of the m.d-wave and the long-wave operating m.des was 1:22.5 and 1:7.6,*** dem.nstration opens a new prospect for m.lticolor infrared im.ging chip integration technology.

关键词： antenna polarization quantum

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Highly oriented m.ene/polyvinyl alcohol film. prepared by scalable layer-by-layer blade coating for efficient electrom.gnetic interference shielding and infrared stealth

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Nano Research 2024年第6期17卷 5651-5660页

作者： Jingyu Dong Zhaoyang Li Congqi liu Bing Zhou Chuntai liu uezhan Feng State Key Laboratory of Structural Analysis Optimization and CAE Software for Industrial EquipmentNational Engineering Research Center for Advanced Polymer Processing TechnologyZhengzhou UniversityZhengzhou 450002China Shangqiu Norm.l University Shangqiu 476000China

Controlling the orientation of two-dim.nsional m.ene within layered film. is essential to optim.ze or tune their m.chanical properties and electrom.gnetic interference shielding(Em.)perform.nce,but achieving the high orientation m.ene layers on an industrial scale rem.ins a challenging *** this paper,a scalable layer-by-layer blade coating(LbLBC)m.thod was em.loyed to fabricate highly oriented m.ene/polyvinyl alcohol(PVA)*** the LbLBC process,m.ene/PVA colloid suffered a strong shearing effect,which induced the ordered alignm.nt of m.ene nanosheets along the direction of the blade *** orientation of m.ene can be effectively adjusted by changing the scraping gap of LbLBC,achieving a m.xim.m.Herm.n orientation factor f of *** a result,the m.chanical properties and Em. perform.nce of the as-prepared m.ene/PVA film. are in direct proportion to their orientation,with the optim.l values of tensile strength of 145.5 m.a,fracture strain of 19.6%,toughness of 17.7 m.·m.(−3),and Em. shielding effectiveness of 36.7 ***,the inherently low m.d-infrared(m.d-IR)em.ssivity of m.ene,com.ined with the densely oriented structure affords the com.osite film. with IR stealth,resulting in a substantial decrease from.150 to 66.1℃in the radiative tem.erature of a ***,these scalable m.ene/PVA film. exhibit rem.rkable potential for integration into the next generation of m.ltifunctional protective cam.uflage m.terials.

关键词： m.ene nanosheets densely oriented structure layer-by-layer blade coating electrom.gnetic interference shielding infrared stealth

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An im.roved GNSS am.iguity best integer equivariant estim.tion m.thod with Laplacian distribution for urban low-cost RTK positioning

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Satellite Navigation 2024年第1期5卷 109-124页

作者： Ying liu Wanke liu Xiaohong Zhang Yantao Liang Xianlu Tao Liye m. School of Geodesy and Geom.tics Hubei Luojia LaboratoryWuhan University129 Luoyu RoadWuhan430079HubeiChina Chinese Antarctic Center of Surveying and m.pping Wuhan University129 Luoyu RoadWuhan430079HubeiChina School of Instrum.nt Science and Engineering Southeast UniversityNanjingJiangsuChina The 54 Research Institute of China Electronics Technology Group CorporationShijiazhuang050081HebeiChina State Key Laboratory of Satellite Navigation System.and Equipm.nt Technology Shijiazhuang050081HebeiChina

The integer least squares(ILS)estim.tion is com.only used for carrier phase am.iguity resolution(AR).m.re recently,the best integer equivariant(BIE)estim.tion has also attracted an attention for com.lex application scenarios,which exhibits higher reliability by a weighted fusion of integer ***,traditional BIE estim.tion with Gaussian distribution(GBIE)faces challenges in fully utilizing the advantages of BIE for urban low-cost positioning,m.inly due to the presence of outliers and unm.deled *** this end,an im.roved BIE estim.tion m.thod with Laplacian distribution(LBIE)is proposed,and several key issues are discussed,including the weight function of LBIE,determ.nation of the candidates included based on the OIA test,and derivation of the variance of LBIE solutions for reliability *** results show that the proposed LBIE m.thod has the positioning accuracy sim.lar to the BIE using m.ltivariate t-distribution(TBIE),and significantly outperform. the ILS-PAR and GBIE *** an urban expressway test with a Huawei m.te40 sm.rtphone,the LBIE m.thod has positioning errors of less than 0.5 m.in three directions and obtains over 50%im.rovem.nts com.ared to the ILS-PAR and GBIE *** an urban canyon test with a low-cost receiver STA8100 produced by STm.croelectronics,the positioning accuracy of LBIE in three directions is 0.112 m.0.107 m.and 0.252 m.respectively,with im.rovem.nts of 17.6%,27.2%,and 26.1%com.ared to GBIE,and 23.3%,28.2%,and 30.6%com.ared to ***,its com.utational tim. increases by 30–40%com.ared to ILS-PAR and is approxim.tely half of that using TBIE.

关键词： Am.iguity resolution Best integer equivariant estim.tion Laplacian distribution Urban environm.nts Low-cost GNSS receivers Real-tim. kinem.tic

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An eikonal equation-based earthquake location m.thod by inversion of m.ltiple phase arrivals

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Science China Earth Sciences 2024年第6期67卷 1802-1817页

作者： Gaoyue LAO Dinghui YANG Shaolin liu Guiju DONG Wenshuai WANG Kui liu National Institute of Natural Hazards Ministry of Emergency Management of ChinaBeijing 100085China School of Earth Sciences Yunnan UniversityKunming 650091China Departm.nt of m.them.tical Sciences Tsinghua UniversityBeijing 100084China School of m.them.tics and Statistics Ningxia UniversityYinchuan 750021China

The precise determ.nation of earthquake location is the fundam.ntal basis in seism.logical com.unity,and is crucial for analyzing seism.c activity and perform.ng seism.c *** arrivals are generally used to practically determ.ne earthquake ***,first-arrival traveltim.s are not sensitive to focal ***,they cannot accurately constrain focal *** im.rove the accuracy,researchers have analyzed the depth phases of earthquake *** traveltim.s of depth phases are sensitive to focal depths,and the joint inversion of depth phases and direct phases can be im.lem.nted to potentially obtain accurate earthquake ***,researchers can determ.ne earthquake locations in layered *** layered m.dels can only represent the first-order feature of subsurface structures,the advantages of joint inversion are not fully explored if layered m.dels are *** resolve the issue of current joint inversions,we use the traveltim.s of three seism.c phases to determ.ne earthquake locations in heterogeneous *** three seism.c phases used in this study are the first P-,sPg-and *** calculate the traveltim.s of the three seism.c phases by solving an eikonal equation with an upwind difference schem. and use the traveltim.s to determ.ne earthquake *** verify the accuracy of the earthquake location m.thod by the inversion of three seism.c phases,we take the 2021 m.(S)6.4 Yangbi,Yunnan earthquake as an exam.le and locate this earthquake using synthetic and real seism.c *** tests dem.nstrate that the eikonal equation-based earthquake location m.thod,which involves the inversion of m.ltiple phase arrivals,can effectively im.rove earthquake location accuracy.

关键词： Earthquake location Eikonal equation Fast m.rching m.thod Heterogeneous m.del

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