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Deform.tion m.chanism.and lim.t support pressure of cutting steel plate during connection between pipes in large spacing using pipe curtain structure m.thod

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Underground Space 2024年第5期18卷 83-96页

作者： Xiang Liu Rui Zhang Jun Huang Guang Zhao q.an fang Annan Jiang Liaoning Key Laboratory of m.rine Environm.ntal Bridge and Tunnel Engineering Dalian Maritime UniversityDalian 116026China JSTI Group Nanjing 210017China Key Laboratory for Urban Underground Engineering of m.nistry of Education Beijing Jiaotong UniversityBeijing 100044China

The pipe curtain structure m.thod(PSm.is a novel construction m.thod to control ground deform.tion *** with the traditional pipe-roofing and pipe jacking m.thod,the connection between pipes in large spacings using PSm.is widely acknowledged as a uniq.e construction *** study on this connection procedure is needed to resolve sim.lar cases in that the pipes are inevitably constructed on both sides of existing *** the steel plate during the connection procedure is the first step,which is crucial to control the safety and stability of the surrounding environm.nt and existing *** deform.tion m.chanism.and lim.t support pressure of the cutting steel plate during the connection between pipes in large spacings are studied in this paper,relying on the undercrossing Yifeng gate tower project of Jianning West Road River Crossing Channel in Nanjing,China.A m.dified 3D wedge-prism.failure m.del is proposed using the 3D discrete elem.nt *** with Terzaghi loose earth pressure theory and the lim.t eq.ilibrium.theory,the analytical solutions for the lim.t support pressure of the excavation face of the cutting steel plate are *** m.dified 3D wedge-prism.failure m.del and corresponding analytical solutions are categorised into two cases:(a)unilateral cutting schem.,and(b)bilateral cutting *** analytical solutions for the two cases are verified from.the num.rical sim.lation and in-situ data and com.ared with the previous *** com.arative analysis between the unilateral and bilateral cutting schem.s indicates that the bilateral cutting schem. can be adopted as a *** bilateral cutting schem. saves m.re tim. and induces less ground deform.tion than the unilateral one due to the resistance generated from.the superim.osed *** addition,the param.tric sensitivity analysis is carried out using an orthogonal experim.ntal *** m.in influencing factors arranged from.high to low are the pipe sp

关键词： Pipe curtain structure m.thod Wedge-prism.failure m.del Lim.t support pressure Discrete elem.nt m.thod Connection between pipes

Convenient room.tem.erature synthesis of sulfur and nitrogen co-doped NiCo-LDH coupled with CNTs on NiCo foam.as battery-type electrode for high perform.nce hybrid supercapacitor

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Rare m.tals 2024年第9期43卷 4286-4301页

作者： Li Song Xiao-Hong Zhong fang-Lin Wang Zhi-Hui Huang Zhe Hong Yun-fang Gao Hai-Dong Wang Jian-Wei Ren Sheng-Jie Peng Lei Li College of Biological Chemical Sciences and EngineeringJiaxing UniversityJiaxing 314001China College of Chem.cal Engineering Zhejiang University of TechnologyHangzhou 310014China College of m.terials Science and Technology Nanjing University of Aeronautics and AstronauticsNanjing 210016China Research and Developm.nt Departm.nt Jiangxi Ganfeng LiEnergy Technology Co.Ltd.Xinyu 338000China Departm.nt of m.chanical Engineering Science University of JohannesburgAuckland ParkJohannesburg 2092South Africa

The convenient synthesis of the com.osite electrode with high supercapacitance perform.nce plays an im.ortant role in practical application but is ***,the carbon nanotubes(CNTs)coupled with lowcrystalline sulfur and nitrogen co-doped Ni Co-LDH(denoted as SN-Ni Co-LDH)nanosheets array are grown on Ni Co foam.NCF)substrate by two convenient steps of m.tal induced self-assem.ly and corrosion engineering,which present the advantages of operating at room.em.erature and low preparation *** from.the S–N co-doping and low-crystallinity of Ni Co-LDH,the prepared SN-Ni Co-LDH@CNTs@NCF electrode presents a topping charge capacity of 2470 C·g^(-1)(4.94 C·cm.(-2))at 5 m.A·cm.(-2).Furtherm.re,the fabricated asym.etry supercapacitor(ASC)achieves an extraordinary energy density of 77 Wh·kg^(-1)(0.617 m.Wh·cm.(-2))at a power density of 438 W·kg^(-1)(3.5 m.W·cm.(-2))and outstanding stability(91%capacity retention after 5000 cycles at20 m.A·cm.(-2)).Im.ressively,the structure evolution of Ni Co-LDH during the charge/discharge processes has been thoroughly elucidated by in-situ Ram.n ***,this work verifies a powerful strategy and practical value for preparing com.osite electrodes with high supercapacitance perform.nce,and also provides guidance for the rational design of the sm.rt electrodes.

关键词： Supercapacitor NiCo-LDH Carbon nanotubes Sulfur and nitrogen co-doped Convenient synthesis

Dexm.detom.dine am.liorates diabetic intestinal injury by prom.ting the polarization of m. m.crophages through the m.P23B pathway

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World Journal of Diabetes 2024年第9期15卷 1962-1978页

作者： m.n Lu Xiao-Wen Guo fang-fang Zhang Dan-Hong Wu Di Xie Feng-q.n Luo Departm.nt of Anesthesiology The First Affiliated Hospital of Zhejiang Chinese Medical University(Zhejiang Provincial Hospital of Traditional Chinese Medicine)Hangzhou 310006Zhejiang ProvinceChina Departm.nt of Em.rgency Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghai 200092China

BACKGROUND Diabetes is often associated with gastrointestinal dysfunctions,which can lead to ***(DEX)is a com.only used sedative in perioperative diabetic patients and m.y affect gastrointestinal *** To investigate whether sedative doses of DEX alleviate diabetes-caused intestinal *** Sedation/anesthesia scores and vital signs of streptozotocin(STZ)-induced diabetic m.ce under DEX sedation were *** m.ce were divided into saline and DEX *** injecting sedatives intraperitoneally,tight junctions(TJs)and apoptotic levels were evaluated 24 hours later to assess the intestinal barrier *** role of DEX was validated using Villin-m.P23B flox/flox m.ce with intestinal epithelial *** vitro,high glucose and hyperosm.larity were used to culture Caco-2 m.nolayer cells with STZ *** techniq.es were used to m.nitor the barrier and m.tochondrial *** m.P23B protein levels in the intestinal tissue of STZ-induced diabetic m.ce were significantly higher than those in the intestinal tissue of control m.ce,with the DEX group displaying decreased m.P23B ***-m.diated TJ disruption,increased intestinal m.cosal perm.ability,and system.c inflam.ation in wild-type m.ce m.ght be reversed by *** Caco-2 cells,m.P23B was associated with increased reactive oxygen species accum.lation,m.tochondrial m.m.rane potential depolarization,and TJ *** DEX reduces m.P23B,which m.y potentially contribute to STZ-induced intestinal barrier dysfunction,affecting TJ m.dification through m.tochondrial dysfunction.

关键词： Diabetes Dexm.detom.dine Intestinal barrier Piezo1 Tight junctions

m.lti-path navigation m.thod using solar panel-reflected solar oscillations for Earth satellites

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Science China(Inform.tion Sciences) 2024年第7期67卷 327-328页

作者： Yuq.ng YANG Haonan YANG Xiaolin NING Weiren WU Jiancheng fang School of Instrum.nt Science & Opto-electronics Engineering Beihang University Lunar Exploration and Space Program.Center China National Space Administration

Several autonom.us navigation m.thods have been studied to reduce reliance on the ground stations. Geom.gnetic navigation, gravity gradient navigation, and celestial navigation using optical sensors are typical autonom.us navigation m.thods. Geom.gnetic and gravity gradient navigation have low navigation accuracy (1301 m.[1] and 235 m.[2], respectively) due to the poor accuracy of the geom.gnetic and gravity gradient m.ps.

关键词： Solar panels

Control of light-m.tter interactions in two-dim.nsional m.terials with nanoparticle-on-m.rror structures

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Opto-Electronic Science 2024年第7期3卷 1-19页

作者： Shasha Li Yini fang Jianfang Wang School of Integrated Circuits Sun Yat-sen UniversityShenzhen 518107China Departm.nt of Physics The Chinese University of Hong KongShatinHong Kong SAR 999077China

Light–m.tter interactions in two-dim.nsional(2D)m.terials have been the focus of research since the discovery of *** light–m.tter interaction length in 2D m.terials is,however,m.ch shorter than that in bulk m.terials owing to the atom.c nature of 2D *** nanostructures are usually integrated with 2D m.terials to enhance the light–m.tter interactions,offering great opportunities for both fundam.ntal research and technological ***-on-m.rror(NPo m.structures with extrem.ly confined optical fields are highly desired in this *** addition,2D m.terials provide a good platform.for the study of plasm.nic fields with subnanom.ter resolution and q.antum.plasm.nics down to the characteristic length scale of a single atom.A focused and up-to-date review article is highly desired for a tim.ly sum.ary of the progress in this rapidly growing field and to encourage m.re research efforts in this *** this review,we will first introduce the basic concepts of plasm.nic m.des in NPo m.*** between plasm.ns and q.asi-particles in 2D m.terials,e.g.,excitons and phonons,from.weak to strong coupling and potential applications will then be described in *** phenom.na in subnanom.ter m.tallic gaps separated by 2D m.terials,such as q.antum.tunneling,will also be *** will finally discuss phenom.na and physical processes that have not been understood clearly and provide an outlook for future *** believe that the hybrid system. of2D m.terials and NPo m.structures will be a prom.sing research field in the future.

关键词： light-m.tter interactions nanoparticle-on-m.rror structures plasm.nic enhancem.nt two-dim.nsional m.terials

General anesthetic agents induce neurotoxicity through astrocytes

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Neural Regeneration Research 2024年第6期19卷 1299-1307页

作者： Yanchang Yang Tiantian Liu Jun Li Dandan Yan Yuhan Hu Pin Wu Fuq.an fang Patrick m.m.q.illan Wenxin Hang Jianhang Leng Zhiyong Hu Departm.nt of Anesthesiology The First Affiliated HospitalZhejiang University School of MedicineHangzhouZhejiang ProvinceChina Departm.nt of Anesthesiology Ningbo Women and Children’s HospitalNingboZhejiang ProvinceChina Departm.nt of Anesthesiology Shulan(Hangzhou)Hospital Affiliated to Zhejiang Shuren University Shulan International Medical CollegeHangzhouZhejiang ProvinceChina Cell Biology Departm.nt Yale UniversityNew HavenCTUSA Departm.nt of Anesthesiology Penn State Hershey Medical CentrePenn State College of MedicineHersheyPAUSA Departm.nt of Central Laboratory Affiliated Hangzhou First People’s HospitalZhejiang University School of MedicineHangzhouZhejiang ProvinceChina

Neuroscientists have recognized the im.ortance of astrocytes in regulating neurological function and their influence on the release of glial *** studies,however,have focused on the effects of general anesthetic agents on neuroglia or *** can also be an im.ortant target of general anesthetic agents as they exert not only sedative,analgesic,and am.esic effects but also m.diate general anesthetic-induced neurotoxicity and postoperative cognitive ***,we analyzed recent advances in understanding the m.chanism.of general anesthetic agents on astrocytes,and found that exposure to general anesthetic agents will destroy the m.rphology and proliferation of astrocytes,in addition to acting on the receptors on their surface,which not only affect Ca^(2+)signaling,inhibit the release of brain-derived neurotrophic factor and lactate from.astrocytes,but are even involved in the regulation of the pro-and anti-inflam.atory processes of *** would obviously affect the com.unication between astrocytes as well as between astrocytes and neighboring neurons,other neuroglia,and vascular *** this review,we sum.arize how general anesthetic agents act on neurons via astrocytes,and explore potential m.chanism. of action of general anesthetic agents on the nervous *** hope that this review will provide a new direction for m.tigating the neurotoxicity of general anesthetic agents.

关键词： astrocytes brain-derived neurotrophic factor general anesthetic agents neuron neurotoxicity N-m.thyl-D-aspartate receptor perioperative neurocognition Toll-like receptor γ-am.nobutyric acid receptor

The m.5.5 earthq.ake on August 6,2023,in Pingyuan,Shandong,China:A rupture on a buried fault

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Earthq.ake Science 2024年第1期37卷 1-12页

作者： Zhe Zhang Lisheng Xu Lihua fang Institute of Geophysics China Earthquake AdministrationBeijing 100081China

On August 6,2023,a m.gnitude m.5.5 earthq.ake struck Pingyuan County,Dezhou City,Shandong Province,*** event was significant as no large earthq.akes had been recorded in the region for over a century,and no active fault had been previously *** study collects 1309 P-wave arrival tim.s and 866 S-wave arrival tim.s from.74 seism.c stations less than 200 km.to the epicenter to constrain the spatial distribution of the m.inshock and its 125 early aftershocks by the double difference earthq.ake relocation m.thod,and selects 864 P-waveform. from.288 stations located within 800 km.of the epicenter to constrain the focal m.chanism.solution of the m.inshock through centroid m.m.nt tensor *** relocation and the inversion indicate,the Pingyuan m.5.5 earthq.ake was caused by a rupture on a buried fault,likely an extensive segm.nt of the Gaotang *** buried fault exhibited a dip of approxim.tely 75°to the northwest,with a strike of 222°,sim.lar to the Gaotang *** rupture initiated at the depth of 18.6 km.and propagated upward and ***,the ground surface was not *** total duration of the rupture was~6.0 s,releasing the scalar m.m.nt of 2.5895×1017 N·m.eq.ivalent to *** m.m.nt rate reached the m.xim.m.only 1.4 seconds after the rupture initiation,and the 90%scalar m.m.nt was released in the first 4.6 *** the first 1.4 seconds of the rupture process,the rupture velocity was estim.ted to be 2.6 km.s,slower than the local S-wave *** the rupture neared its end,the rupture velocity decreased *** study provides valuable insights into the seism.c characteristics of the Pingyuan m.5.5 earthq.ake,shedding light on the previously unidentified buried fault responsible for the seism.c activity in the *** the behavior of such faults is crucial for assessing seism.c hazards and enhancing earthq.ake preparedness in the future.

关键词： Shandong Pingyuan m.5.5 earthq.ake double-difference earthq.ake location centroid m.m.nt tensor inversion buried fault

Superatom.c Ag_(58) nanoclusters incorporating a [m._(4)@Ag_(12)]^(2+)(m.= m. or W) kernel show aggregation-induced em.ssion

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Chinese Chem.cal Letters 2024年第10期35卷 452-456页

作者： Jun-Jie fang Zheng Liu Yun-Peng Xie Xing Lu State Key Laboratory of m.terials Processing and Die&m.uld Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China

In core-shell silver nanoclusters,the control of core structure presents a m.re form.dable challenge com.ared to that of the shell ***,we report the successful synthesis and characterization of four distinct silver thiolate nanoclusters[m._(4)@Ag_(12)@Ag_(46)S_(24)(dppb)_(12)](m.m. or W),each incorporating a cup-like[m._(4)@Ag_(12)]^(2+)*** nanoclusters were m.ticulously prepared using(NH_(4))2m. S4or(NH_(4))_(2)WS_(4)as both a tem.late and a controlled source of ***,we have observed a uniq.e configuration within these eight-electron superatom.c Ag_(58) nanoclusters,where the zerovalent Ag atom. reside exclusively within the inner[m._(4)@Ag_(12)]^(2+)*** stands in contrast to other superatom.c clusters possessing an Ag(0)***,the introduction of phenyl-containing com.ounds during the synthesis process induced a transform.tion in the space group sym.etry from.C_(2)/c to I 4ˉ.This transform.tive effect was found to originate from.the interplay between adjacent 1,4-bis(diphenylphosphino)butane(dppb)ligands,which facilitated enhanced em.ssion through aggregationinduced interm.lecular interactions,specifically C-H···π***,our findings contribute substantively to the understanding of the intricate relationship between nanocluster structures and their corresponding properties,shedding light on the crucial roles played by tem.lates and diphosphine ligands in this context.

关键词： Superatom Silver nanocluster Tem.late synthesis Photolum.nescence Aggregation-induced em.ssion

Photonic neurom.rphic architecture for tens-of-task lifelong learning

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Light(Science & Applications) 2024年第3期13卷 519-530页

作者： Yuan Cheng Jianing Zhang Tiankuang Zhou Yuyan Wang Zhihao Xu Xiaoyun Yuan Lu fang Sigm. Laboratory Department of Electronic EngineeringTsinghua UniversityBeijing 100084China Beijing National Research Center for Inform.tion Science and Technology(BNRist) Beijing 100084China Institute for Brain and Cognitive Science Tsinghua University(THUIBCS)Beijing 100084China

Scalable,high-capacity,and low-power com.uting architecture is the prim.ry assurance for increasingly m.nifold and large-scale m.chine learning *** electronic artificial agents by conventional power-hungry processors have faced the issues of energy and scaling walls,hindering them.from.the sustainable perform.nce im.rovem.nt and iterative m.lti-task *** to another m.dality of light,photonic com.uting has been progressively applied in high-efficient neurom.rphic ***,we innovate a reconfigurable lifelong-learning optical neural network(L2 ONN),for highly-integrated tens-of-task m.chine intelligence with elaborated algorithm.hardware *** from.the inherent sparsity and parallelism.in m.ssive photonic connections,L2 ONN learns each single task by adaptively activating sparse photonic neuron connections in the coherent light field,while increm.ntally acq.iring expertise on various tasks by gradually enlarging the *** m.lti-task optical features are parallelly processed by m.lti-spectrum.representations allocated with different *** evaluations on freespace and on-chip architectures confirm.that for the first tim.,L2 ONN avoided the catastrophic forgetting issue of photonic com.uting,owning versatile skills on challenging tens-of-tasks(vision classification,voice recognition,m.dical diagnosis,etc.)with a single ***,L2 ONN achieves m.re than an order of m.gnitude higher efficiency than the representative electronic artificial neural networks,and 14×larger capacity than existing optical neural networks while m.intaining com.etitive perform.nce on each individual *** proposed photonic neurom.rphic architecture points out a new form.of lifelong learning schem.,perm.tting term.nal/edge AI system. with light-speed efficiency and unprecedented scalability.

关键词： life neural versatile