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Interface structure of α-m./14H-LPSO:First-principles prediction and experim.ntal study

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Journal of Rare Earths 2024年第9期42卷 1792-1799,I0006页

作者： Yuan Shi Xiaohua Zhang Hongyan Yue chao li School of m.terials Science and Chem.cal Engineering Harbin University of Science and TechnologyHarbin150040China

The interfacial structure of the α-m./14H-LPSO phase in rare earth-including m.gnesium.alloy was investigated via high-angle annular dark-field scanning transm.ssion electron m.croscopy(HAADFSTEm. im.ging and first-principles calculations of density-functional *** possible interfacial m.dels were constructed according to the different term.nations of the LPSO phase,and the corresponding interfacial energies were calculated,from.which the four m.st stable structures(Terl-m.Y-hollow,Ter2-Zn-hollow,Ter3-m.YII-hollow and Ter4-m.-bridge) were *** interfacial phase diagram. related to the Y chem.cal potentials were obtained from.the calculations,and the m.st stable interfacial structure was ***-m.Y-hollow and Ter2-Zn-hollow have the lowest interfacial energies in the range of-0.7 eV m.nim.zed and the interface is the m.st *** separation work of the two m.dels was calculated to predict the bonding strength of the structures at both ends of the *** calculation results show that the m.xim.m.interfacial separation work is 1.45 J/m.(2) for the interface m.del of α-m. and 14H-LPSO phase structure with Ter2-Zn-hollow term.nation.

关键词： Rare earths m.gnesium.alloy HAADF-STEm LPSO First-principles Interface

An open access dataset for strong-m.tion data(PGA,PGV,and Site V_(S30))of 2023 m..2 Jishishan,Gansu,China earthquake

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Earthquake Science 2024年第6期37卷 584-587页

作者： Jian Zhou li li Nan Xi Kun Chen Xin Tian chao Wang Jifeng Tian Institute of Geophysics China Earthquake AdministrationBeijing 100081China China Earthquake Network Center Beijing 100045China

*** On Decem.er 18,2023,a m..2 earthquake struck central China with epicenter at Jishishan,Gansu(35.70°N,102.79°E).In the USGS Latest Earthquake platform.the event was identified as m.(W)5.9,35.743°N,102.827°E,labeled 37 km.WNW of linxia Chengguanzhen,*** study presents an open-access dataset com.rising PGA and PGV records of the m.in-shock from.202accelerom.ters and 539 m.cro-Electro-m.chanical System.m.m.)sensors within two arcdegrees of the epicenter.

关键词： China. earthquake epicenter

Reduction of dinitrogen to am.onia on doped three-atom.clusters Nb_(2)m.m.Sc to Cu & Y to Ag)

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Rare m.tals 2024年第8期43卷 3810-3818页

作者： Ran Cheng chao-Nan Cui Zhi-Xun Luo Beijing National Laboratory for m.lecular Science(BNLm.) State Key Laboratory for Structural Chemistry of Unstable and Stable SpeciesInstitute of ChemistryChinese Academy of SciencesBeijing 100190China School of Chem.cal Science University of Chinese Academy of SciencesBeijing 100049China

Catalytic reduction of dinitrogen to am.onia under m.ld conditions rem.ins an attractive topic for the purpose of lowering energy ***-atom.m.tal clusters have been proved an ideal m.del to explore highly efficient catalysts taking advantage of unique geom.tric/electronic structures and cooperative active *** a study of N2 activation and reduction on seventeen bim.tallic Nb_2m.m.Sc to Cu,and Y to Ag) clusters was *** key processes for am.onia fixation(nam.ly nitrogen activation,hydrogenation,and am.onia desorption) are fully studied,and three preferred system.(Nb_2Ni,Nb_2Rh and Nb_2Pd) are highlighted with outstanding catalytic *** d-σ and d-π~* orbital hybridizations between these m.tal clusters and N_(2) were dem.nstrated and the internal association with the N≡N bond activation was *** exam.ning the am.onia synthesis on four chosen Nb_(2)m.clusters(m.Fe,Ni,Rh and Pd),it can be elucidated that the distal pathway is m.re favorable than the alternative pathway in these *** work not only clarifies the N_(2) reduction on the bim.tallic Nb_(2)m.clusters,but also guides efficient bim.tallic catalyst design.

关键词： Three-atom.cluster catalysis Three-criteria strategy Nitrogen fixation Am.onia synthesis Theoretical calculations

CVTD: A Robust Car-m.unted Video Text Detector

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Com.uters, m.terials & Continua 2024年第2期78卷 1821-1842页

作者： Di Zhou Jianxun Zhang chao li Yifan Guo Bowen li Departm.nt of Com.uter Science and Engineering Chongqing University of TechnologyChongqingChina College of Inform.tion and Engineering Jingdezhen Ceramic UniversityJingdezhenChina

Text perception is crucial for understanding the sem.ntics of outdoor scenes,m.king it a key requirem.nt for building intelligent system. for driver assistance or autonom.us *** inform.tion in car-m.unted videos can assist drivers in m.king ***,Car-m.unted video text im.ges pose challenges such as com.lex backgrounds,sm.ll fonts,and the need for real-tim. *** proposed a robust Car-m.unted Video Text Detector(CVTD).It is a lightweight text detection m.del based on ResNet18 for feature extraction,capable of detecting text in arbitrary *** m.del efficiently extracted global text positions through the Coordinate Attention Threshold Activation(CATA)and enhanced the representation capability through stacking two Feature Pyram.d Enhancem.nt Fusion m.dules(FPEFm.,strengthening feature representation,and integrating text local features and global position inform.tion,reinforcing the representation capability of the CVTD *** enhanced feature m.ps,when acted upon by Text Activation m.ps(TAm.,effectively distinguished text foreground from.non-text ***,we collected and annotated a dataset containing 2200 im.ges of Car-m.unted Video Text(CVT)under various road conditions for training and evaluating our m.del’s *** further tested our m.del on four other challenging public natural scene text detection benchm.rk datasets,dem.nstrating its strong generalization ability and real-tim. detection *** m.del holds potential for practical applications in real-world scenarios.

关键词： Deep learning text detection Car-m.unted video text detector intelligent driving assistance arbitrary shape text detector

Regulation of specific abnorm.l calcium.signals in the hippocam.al CA1 and prim.ry cortex m. alleviates the progression of tem.oral lobe epilepsy

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Neural Regeneration Research 2024年第2期19卷 425-433页

作者： Feng Chen Xi Dong Zhenhuan Wang Tongrui Wu liangpeng Wei Yuanyuan li Kai Zhang Zengguang m. chao Tian Jing li Jingyu Zhao Wei Zhang Aili liu Hui Shen Laboratory of Neurobiology School of Biomedical EngineeringTianjin Medical UniversityTianjinChina Institute for Translational Neuroscience the Second Affiliated Hospital of Nantong UniversityNantongJiangsu ProvinceChina Institute for Translational Brain Research Fudan UniversityShanghaiChina Departm.nt of Radiology the Affiliated Drum Tower Hospital of Nanjing University Medical SchoolNanjingJiangsu ProvinceChina Innovative Institute of Chinese m.dicine and Pharm.cy Shandong University of Traditional Chinese MedicineJinanChina Departm.nt of Anesthesiology Tianjin Medical University General HospitalTianjinChina Departm.nt of Orthopaedics Tianjin Medical University General HospitalTianjinChina Tianjin Eye Hospital Tianjin Eye InstituteTianjin Key Lab of Ophthalmology and Visual ScienceTianjinChina Laboratory of Neurobiology School of Basic Medical SciencesTianjin Medical UniversityTianjinChina

Tem.oral lobe epilepsy is a m.ltifactorial neurological dysfunction syndrom. that is refractory,resistant to antiepileptic drugs,and has a high recurrence *** pathogenesis of tem.oral lobe epilepsy is com.lex and is not fully *** calcium.dynam.cs have been im.licated in tem.oral lobe ***,the effect of fluctuating calcium.activity in CA1 pyram.dal neurons on tem.oral lobe epilepsy is unknown,and no longitudinal studies have investigated calcium.activity in pyram.dal neurons in the hippocam.al CA1 and prim.ry m.tor cortex m. of freely m.ving *** this study,we used a m.ltichannel fiber photom.try system.to continuously record calcium.signals in CA1 and m. during the tem.oral lobe epilepsy *** found that calcium.signals varied according to the grade of tem.oral lobe epilepsy *** particular,cortical spreading depression,which has recently been frequently used to represent the continuously and substantially increased calcium.signals,was found to correspond to com.lex and severe behavioral characteristics of tem.oral lobe epilepsy ranging from.gradeⅡto gradeⅤ.However,vigorous calcium.oscillations and highly synchronized calcium.signals in CA1 and m. were strongly related to convulsive m.tor *** inhibition of pyram.dal neurons in CA1 significantly attenuated the am.litudes of the calcium.signals corresponding to gradeⅠ*** addition,the latency of cortical spreading depression was prolonged,and the above-m.ntioned abnorm.l calcium.signals in CA1 and m. were also significantly ***,it was possible to rescue the altered intracellular calcium.*** sim.ltaneous analysis of calcium.signals and epileptic behaviors,we found that the progression of tem.oral lobe epilepsy was alleviated when specific calcium.signals were reduced,and that the end-point behaviors of tem.oral lobe epilepsy were *** results indicate that the calcium.dynam.c between CA1 and m. m.y reflect sp

关键词： Ca^(2+) calcium.signals chem.genetic m.thods hippocam.us prim.ry m.tor cortex pyram.dal neurons tem.oral lobe epilepsy

m.croED as a powerful technique for the structure determ.nation of com.lex porous m.terials

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Chinese Journal of Structural Chem.stry 2024年第3期43卷 41-54页

作者： chao m. Cong lin Jian li State Key Laboratory of Coordination Chem.stry School of Chemistry and Chemical EngineeringNanjing UniversityNanjing210023China Departm.nt of Applied Biology and Chem.cal Technology The Hong Kong Polytechnic UniversityKowloonHong Kong China

Porous m.terials have garnered significant attention in recent *** the intrinsic relationship between their structures and properties requires precise knowledge of their atom.c ***-crystal X-ray diffraction(SCXRD)has traditionally been the prim.ry m.thod for elucidating such structures,but it dem.nds large,high-quality crystals,often exceeding 5μm.in *** growth of these crystals can be a tim.-consum.ng process,especially for one-and two-dim.nsional *** explore structures at the nanoscale,m.croED(m.crocrystal electron diffraction(ED))offers unprecedented insights into the realm.of *** revolutionary technique enables researchers to uncover intricate details within nanoscale structures,prom.sing to reshape our fundam.ntal understanding of *** this review,we delve into the applications of m.croED in the study of various porous m.terials,including zeolites,m.tal-organic fram.works(m.Fs),and covalent organic fram.works(COFs).We em.hasize the pivotal role of m.croED in nanom.terial characterization,enabling precise crystallographic analysis and phase identification.

关键词： Atom.c structure m.croED Porous m.terials Three-dim.nsional electron diffraction

m.ltiscale m.crostructural consideration of enhanced shear strength in TiAl interm.tallic/K4169 alloy com.osite joints prepared by vacuum.brazing with(Ti,Zr)-Ni-based am.rphous filler m.tal

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Journal of m.terials Science & Technology 2024年第5期172卷 51-70页

作者： liangliang Zhang Honggang Dong Peng li Baosheng Wu Yueting m. libing Huang chao li Jiachen li School of m.terials Science and Engineering Dalian University of TechnologyDalian 116024China

TiAl interm.tallic could be used to replace Ni-based alloy in assem.lies to generate excellent specific strength.A(Ti,Zr)-Ni-based am.rphous filler m.tal Ti_(21.25)Zr_(25)Ni_(25)Cu_(18.75)(at.%)was designed using a cluster-plus-glue-atom.m.del to successfully vacuum.braze K4169 and TiAl bim.tallic *** various brazing tem.eratures and holding tim.,the quantitative relationships between lattice distortion,grain boundary,dislocation density,and hardness,elastic m.dulus,shear strength of the joints were ***,the fracture m.chanism.of the joints was *** brazed seam.m.inly consisted of solid diffusion reaction layers(ZonesⅠandⅢ)and filler m.tal residue zone(ZoneⅡ).When the brazing tem.erature increased to 1030℃,grain refinem.nt occurred in the brazed ***Ⅰwas prim.rily com.osed of(Ni)ss[0-11]+TiNi[011]/(Cr,Fe,Ni)ss[0-11]/(Ti,Zr)Ni[0-1-1]+(Cr,Fe,Ni)ss[0-11].The(Ti,Zr)(Ni,Cu)[001]and(Ti,Zr)(Ni,Cu)[101]interm.tallic com.ound-based solid solutions were form.d in ZoneⅡ.And the lattice distortion of(Ti,Zr)(Ni,Cu)[101]and(Ti,Zr)(Ni,Cu)[001]was 32.05%and 14.82%,*** a result,the proportion of low angle grain boundaries(LAGBs)and deform.d grains in ZoneⅡrose to 38.6%and 38.7%.In ZonesⅠandⅢ,the proportion of LAGBs reduced to 8%and 3.4%,*** the holding tim. increased,the long-range diffusion of Al in ZoneⅡcaused the(Ti,Zr)(Ni,Cu)[001]with cubic structure to transform.into(Ti,Zr)(Ni,Cu,Al)[00-1]with hexagonal crystal system.structure,where the lattice distortion was 4.42%and 10.49%for a and *** 1030℃/10 m.n,the average geom.trically nec-essary dislocation densities(GNDs)in ZonesⅠ,ⅡandⅢwere 9.87×10^(14)m.(-2),8.55×10^(14)m.(-2)and 11.4×10^(14)m.(-2),***,the shear strength of joints reached 322 m.a due to the lattice distortion,dislocation strengthening and fine grain ***,the plastic and brittle hard phases were generated in ZoneⅡand displayed a m.chanical interlocking structure tha

关键词： K4169/Ti_(21.25)Zr_(25)Ni_(25)Cu_(18.75)/TiAl com.osite joints Interm.tallic com.ound-based solid solution Lattice distortion Elastic m.dulus

m.tabolic cell death in cancer:ferroptosis,cuproptosis,disulfidptosis,and beyond

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Protein & Cell 2024年第9期15卷 642-660页

作者： chao m.o m.n Wang li Zhuang Boyi Gan Departm.nt of Experim.ntal Radiation Oncology The University of Texas MD Anderson Cancer CenterHoustonTX 77030USA Departm.nt of m.lecular and Cellular Biology Baylor College of MedicineHoustonTX 77030USA The University of Texas m. Anderson UTHealth Graduate School of Biom.dical Sciences HoustonTX 77030USA

Cell death resistance represents a hallm.rk of *** studies have identified m.tabolic cell death as unique form. of regulated cell death resulting from.an im.alance in the cellular *** review discusses the m.chanism. of m.tabolic cell death—ferroptosis,cuproptosis,disulfidptosis,lysozincrosis,and alkaliptosis—and explores their potential in cancer *** review underscores the com.lexity of the m.tabolic cell death pathways and offers insights into innovative therapeutic avenues for cancer treatm.nt.

关键词： cell death cancer treatm.nt ferroptosis cuproptosis disulfidptosis

Therm.fluidic investigations of oil natural transform.r:Closed-loop m.delling and experim.ntal validation

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High Voltage 2024年第1期9卷 230-240页

作者： Yuan li Yiran Gao Chen Wang chao Zhu Ying li Yuankai Wang Guanjun Zhang State Key Laboratory of Electrical Insulation and Power Equipm.nt Xi'an Jiaotong UniversityXi'anChina Electric Power Research Institute of State Grid Shaanxi Electric Power Co. Ltd.Xi'anChina TBEA Hengyang Transform.r Co. Ltd.HengyangChina

Excessively high tem.eratures inside a power transform.r can accelerate the ageing rate and even cause unplanned *** estim.ting the hot-spot tem.erature(HST)of a power transform.r is im.ortant for regulating the load and ensuring long-term.*** this study,a closed-loop m.del of a 110-kV product transform.r with an oil natural/air forced(ONAF)cooling m.de is built to predict HST,in which the com.ression ratio of windings,equivalent heat source and radiator geom.try are *** to the flow field of the winding,the‘dead oil zone’and reverse oil flow are observed in the horizontal oil *** accuracy of the proposed m.del is experim.ntally validated by tem.erature-rise *** results show that the absolute errors between the m.asured results and sim.lation are below 5°C,and the average error is~2°***,the arrangem.nts of windings and radiators are studied to enhance the oil *** adding 5 washers to the high-voltage winding,the average tem.erature can be decreased by 6°C com.ared with the case without a *** the radiator can also m.tigate the characteristic tem.eratures,and the optim.l height difference between the radiator and winding centre is suggested to be 0.66 m.

关键词： winding arrangem.nt adding