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Fish-on-chips:unveiling neural processing of chemicals in small animals through precise fluidic control

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Neural Regeneration Research 2024年第11期19卷 2351-2353页

作者： Samuel K.h.Sy ho Ko Division of Neurology Department of Medicine and TherapeuticsFaculty of MedicineThe Chinese University of Hong KongShatinNew TerritoriesHong Kong Special Administrative RegionChina Li Ka Shing institute of health Sciences Faculty of MedicineThe Chinese University of Hong KongShatinNew TerritoriesHong Kong Special Administrative RegionChina Department of Electrical and Electronic Engineering Faculty of EngineeringThe University of Hong KongPok Fu LamHong Kong IslandHong Kong Special Administrative RegionChina Advanced Biomedical instrumentation center Hong Kong Science ParkPak Shek KokNew TerritoriesHong Kong Special Administrative RegionChina Margaret K.L.cheung Research center for Management of Parkinsonism Faculty of MedicineThe Chinese University of Hong KongShatinNew TerritoriesHong Kong Special Administrative RegionChina Lau Tat-chuen Research center of Brain Degenerative Diseases in chinese Faculty of MedicineThe Chinese University of Hong KongShatinNew TerritoriesHong Kong Special Administrative RegionChina Gerald choa Neuroscience institute The Chinese University of Hong KongShatinNew TerritoriesHong Kong Special Administrative RegionChina

Precise chemical cue presentation alongside advanced brainwide imaging techniques is important to the study of chemosensory processing in ***,the dynamic nature of chemical-carrying media,such as water or air,poses a significant challenge for delivering highly-controlled chemical flow to an animal ***,contact-based cue manipulation and delivery easily shift the position of the animal subject,which is often undesirable for high-quality brain ***,more advanced interfacing tools that align with the diverse range of body part sizes of an animal,ranging from micrometer-scale neurons to meter-long limbs,are much *** is particularly crucial when dealing with dimensions that are beyond the reach of conventional experimental tools.

关键词： dealing precise sizes

hi in high Gas-phase Metallicity Dwarf Galaxy WiSEA J230615.06+143927.9

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Research in Astronomy and Astrophysics 2024年第1期24卷 292-299页

作者： Yan Guo c.Sengupta T.c.Scott P.Lagos Y.Luo Purple Mountain Observatory Chinese Academy of SciencesNanjing 210023China School of Astronomy and Space Sciences University of Science and Technology of ChinaHefei 230026China institute of Astrophysics and Space Sciences(iA Porto) Rua das Estrelas4150-762PortoPortugal

We present resolved Giant Metrewave Radio Telescope h i observations of the high gas-phase metallicity dwarf galaxy WiSEA J230615.06+143927.9(z = 0.005)(hereafter J2306) and investigate whether it could be a Tidal Dwarf Galaxy(TDG) candidate. TDGs are observed to have higher metallicities than normal dwarfs. J2306 has an unusual combination of a blue g-r color of 0.23 mag, irregular optical morphology and high-metallicity(12 +log(O/h) = 8.68 ± 0.14), making it an interesting galaxy to study in more detail. We find J2306 to be an h i rich galaxy with a large extended, unperturbed rotating h i disk. Using our h i data we estimated its dynamical mass and found the galaxy to be dark matter(DM) dominated within its h i radius. The quantity of DM, inferred from its dynamical mass, appears to rule out J2306 as an evolved TDG. A wide area environment search reveals J2306 to be isolated from any larger galaxies which could have been the source of its high gas metallicity. Additionally, the h i morphology and kinematics of the galaxy show no indication of a recent merger to explain the *** detailed optical spectroscopic observations of J2306 might provide an answer to how a seemingly ordinary irregular dwarf galaxy achieved such a high level of metal enrichment.

关键词： galaxies:abundances galaxies:dwarf galaxies:irregular radio lines:galaxies radio lines:iSM

LhAASO观测发现W51区域粒子能量加速至PeV的证据（英文）

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Science Bulletin 2024年第18期 2833-2841页

作者： Zhen cao F.Aharonian Axikegu Y.x.Bai Y.W.Bao D.Bastieri x.J.Bi Y.J.Bi W.Bian A.V.Bukevich Q.cao W.Y.cao Zhe cao J.chang J.F.chang A.M.chen E.S.chen h.x.chen Liang chen Lin chen Long chen M.J.chen M.L.chen Q.h.chen S.chen S.h.chen S.Z.chen T.L.chen Y.chen N.cheng Y.D.cheng M.Y.cui S.W.cui x.h.c.i Y.D.cui B.Z.Dai h.L.Dai Z.G.Dai Danzengluobu x.Q.Dong K.K.Duan J.h.Fan Y.Z.Fan J.Fang J.h.Fang Kun Fang c.F.Feng h.Feng L.Feng S.h.Feng x.T.Feng Y.Feng Y.L.Feng S.Gabici B.Gao c.D.Gao Q.Gao W.Gao W.K.Gao M.M.Ge L.S.Geng G.Giacinti G.h.Gong Q.B.Gou M.h.Gu F.L.Guo x.L.Guo Y.Q.Guo Y.Y.Guo Y.A.han M.hasan h.h.he h.N.he J.Y.he Y.he Y.K.hor B.W.hou c.hou x.hou h.B.hu Q.hu S.c.hu D.h.huang T.Q.huang W.J.huang x.T.huang x.Y.huang Y.huang x.L.Ji h.Y.Jia K.Jia K.Jiang x.W.Jiang Z.J.Jiang M.Jin M.M.Kang i.Karpikov D.Kuleshov K.Kurinov B.B.Li c.M.Li cheng Li cong Li D.Li F.Li h.B.Li h.c.Li Jian Li Jie Li K.Li S.D.Li W.L.Li W.L.Li x.R.Li xin Li Y.Z.Li Zhe Li Zhuo Li E.W.Liang Y.F.Liang S.J.Lin B.Liu cheng Liu D.Liu D.B.Liu h.Liu h.D.Liu J.Liu J.L.Liu M.Y.Liu R.Y.Liu S.M.Liu W.Liu Y.Liu Y.N.Liu Q.Luo Y.Luo h.K.Lv B.Q.Ma L.L.Ma x.h.Ma J.R.Mao Z.Min W.Mitthumsiri h.J.Mu Y.c.Nan A.Neronov L.J.Ou P.Pattarakijwanich Z.Y.Pei J.c.Qi M.Y.Qi B.Q.Qiao J.J.Qin A.Raza D.Ruffolo A.Sáz M.Saeed D.Semikoz L.Shao O.Shchegolev x.D.Sheng F.W.Shu h.c.Song Yu.V.Stenkin V.Stepanov Y.Su D.x.Sun Q.N.Sun x.N.Sun Z.B.Sun J.Takata P.h.T.Tam Q.W.Tang R.Tang Z.B.Tang W.W.Tian c.Wang c.B.Wang G.W.Wang h.G.Wang h.h.Wang J.c.Wang Kai Wang Kai Wang L.P.Wang L.Y.Wang P.h.Wang R.Wang W.Wang x.G.Wang x.Y.Wang Y.Wang Y.D.Wang Y.J.Wang Z.h.Wang Z.x.Wang Zhen Wang Zheng Wang D.M.Wei J.J.Wei Y.J.Wei T.Wen c.Y.Wu h.R.Wu Q.W.Wu S.Wu x.F.Wu Y.S.Wu S.Q.xi J.xia G.M.xiang D.x.xiao G.xiao Y.L.xin Y.xing D.R.xiong Z.xiong D.L.xu R.F.xu R.x.xu W.L.xu L.xue D.h.Yan J.Z.Yan T.Yan c.W.Yang c.Y.Yang F.Yang F.F.Yang L.L.Yang M.J.Yang R.Z.Yang W.x.Yang Y.h.Yao Z.G.Yao L.Q.Yin N.Yin x.h.You Z.Y.You Y.h.Yu Q.Yuan h.Yue h.D.Zeng T.x.Zeng W.Zeng M.Zha B.B.Zhang F.Zhang h.Zhang h.M.Zhang h.Y.Z LhAASO合作组 Key Laboratory of Particle Astrophysics & Experimental Physics Division & computing center institute of high Energy Physics chinese Academy of Sciences University of chinese Academy of Sciences TiANFU cosmic Ray Research center Dublin institute for Advanced Studies Max-Planck-institut for Nuclear Physics School of Physical Science and Technology & School of information Science and Technology Southwest Jiaotong University School of Astronomy and Space Science Nanjing University center for Astrophysics Guangzhou University Tsung-Dao Lee institute & School of Physics and Astronomy Shanghai Jiao Tong University institute for Nuclear Research of Russian Academy of Sciences hebei Normal University University of Science and Technology of china State Key Laboratory of Particle Detection and Electronics china Key Laboratory of Dark Matter and Space Astronomy & Key Laboratory of Radio Astronomy Purple Mountain Observatory chinese Academy of Sciences Research center for Astronomical computing Zhejiang Laboratory Key Laboratory for Research in Galaxies and cosmology Shanghai Astronomical Observatory chinese Academy of Sciences School of Physics and Astronomy Yunnan University Key Laboratory of cosmic Rays (Tibet University) Ministry of Education National Astronomical Observatories chinese Academy of Sciences School of Physics and Astronomy (Zhuhai) & School of Physics(Guangzhou) & Sino-French institute of Nuclear Engineering and Technology (Zhuhai) Sun Yat-sen University institute of Frontier and interdisciplinary Science Shandong University APc UniversitéParis cité cNRS/iN2P3 cEA/iRFU Observatoire de Paris Department of Engineering Physics Tsinghua University School of Physics and Microelectronics Zhengzhou University Yunnan Observatories chinese Academy of Sciences china center of Advanced Science and Technology college of Physics Sichuan University School of Physics Peking University Guangxi Key Laboratory for Relativistic Astrophysics School of Physical Science and Technology Guangxi University Department of Ph

The γ-ray emission from the W51 complex is widely acknowledged to be attributed to the interaction between the cosmic rays （cRs） accelerated by the shock of supernova remnant （SNR） W51c and the dense molecular clouds in the adjacent star-forming region,***,the maximum acceleration capability of W51c for cRs remains *** on observations conducted with the Large high Altitude Air Shower Observatory （LhAASO）,we report a significant detection of γ rays emanating from the W51 complex,with energies from 2 to 200 *** LhAASO measurements,for the first time,extend the γ-ray emission from the W51 complex beyond 100 TeV and reveal a significant spectrum bending at tens of *** combining the"π0-decay bump"featured data from Fermi-LAT,the broadband γ-ray spectrum of the W51 region can be well-characterized by a simple pp-collision *** observed spectral bending feature suggests an exponential cutoff at～400 TeV or a power-law break at～200 TeV in the cR proton spectrum,most likely providing the first evidence of SNRs serving as cR accelerators approaching the PeV ***,two young star clusters within W51B could also be theoretically viable to produce the most energetic γ rays observed by *** findings strongly support the presence of extreme cR accelerators within the W51 complex and provide new insights into the origin of Galactic cRs.

关键词：

Proton-neutron symplectic model description of ^(106)cd

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chinese Physics c 2024年第3期48卷 169-179页

作者： h.G.Ganev Joint institute for Nuclear Research DubnaRussia institute of Mechanics Bulgarian Academy of SciencesSofiaBulgaria

in this study,a microscopic shell-model description of the low-lying collective states in the weakly deformed nucleus ^(106)cd within the recently proposed microscopic version of the Bohr-Mottelson model is provided.A good description of the excitation energies of the lowest ground,γ,andβquasibands is obtained without the adjustable kinetic energy ***,γdegrees of freedom are shown to play a crucial role in the description of spectroscopy of this nucleus.A modified SU(3)SU(3)preserving high-order interaction is used to produce aγ-unstable type of odd-even staggering,observed experimentally between the states of the quasi-γ*** current approach enables the characterization of observed intraband and interband quadrupole *** findings of this study propose an alternative interpretation of the fundamental question regarding the nature of low-energy vibrations,as well as the emergence of deformation and collectivity in weakly deformed atomic nuclei.

关键词： shell-model version of the Bohr-Mottelson model proton-neutron symplectic model Sp(12,R)dynamical algebra quadrupole dynamics

in-plane crushing behavior and energy absorption design of composite honeycombs

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Acta Mechanica Sinica 2018年第6期34卷 1108-1123页

作者： h.x.Wu Y.Liu x.c.Zhang School of civil Engineering Northeast Forestry UniversityHarbin 150040China institute of Mechanics Beijing Jiaotong UniversityBeijing 100044China Department of Mechanical Engineering North China Electric Power UniversityBaoding 071003China

Theoretical analysis and numerical simulation methods were used to study the in-plane crushing behavior of single-cell structures and regular and composite ***,hexagonal,and circular honeycombs were selected as honeycomb layers to establish composite honeycomb models in the form of composite structures and realize the complementary advantages of honeycombs with type Ⅰ and type Ⅱ *** effects of honeycomb layer arrangement,plastic collapse strength,relative density,and crushing velocity on the deformation mode,plateau stress,load uniformity,and energy absorption performance of the composite honeycombs were mainly considered.A semi-empirical formula for plateau stress and energy absorption rate per unit mass for the composite honeycombs was *** results showed that the arrangement mode of honeycomb layers is an important factor that affects their mechanical *** selecting the arrangement of honeycomb layers and the proportion of honeycomb layers with different structures in a composite honeycomb can effectively improve its load uniformity and control the magnitude of plateau stress and energy absorption capacity.

关键词： composite honeycombs Dynamic crushing Load uniformity Energy absorption Finite element analysis

Early Phases of Star Formation: Testing chemical Tools

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Research in Astronomy and Astrophysics 2024年第1期24卷 96-118页

作者： N.c.Martinez S.Paron cONicET-Universidad de Buenos Aires.instituto de Astronomía y Física del Espacio Ciudad Universitaria(C1428EGA)Ciudad Autónoma de Buenos AiresArgentina

Star-forming processes strongly influence the iSM ***,many high-quality databases are available at millimeter *** them,it is possible to carry out studies that review and deepen previous *** these studies involve large samples of sources,it is preferred to use direct tools to study the molecular *** the aim of testing these tools such as the use of the hcN/hNc ratio as a thermometer,and the use of h^(13)cO^(+),hc_(3)N,N_(2)h^(+) and c_(2)h as "chemical clocks," we present a molecular line study toward 55 sources representing massive young stellar objects at different evolutionary stages:infrared dark clouds(iRDcs),highmass protostellar objects(hMPOs),hot molecular cores(hMcs) and ultracompact h ii *** found that the use of the hcN/hNc ratio as a universal thermometer in the iSM should be taken with care because the hcN optical depth is a big issue that can affect the ***,this tool should be utilized only after a careful analysis of the hcN spectrum,checking that no line,neither the main nor the hyperfine ones,presents absorption *** point out that the analysis of the emission of h^(13)cO^(+),hc_(3)N,N_(2)h^(+) and c_(2)h could be useful to trace and distinguish regions among iRDcs,hMPOs and *** molecular line widths of these four species increase from the iRDc to the hMc stage,which can be a consequence of the gas dynamics related to the starforming processes taking place in the molecular *** results not only contribute with more statistics,acting as a probe of such chemical tools,useful to obtain information in large samples of sources,but also complement previous works through the analysis of other types of sources.

关键词： stars:formation iSM:molecules iSM:clouds

增材制造Ti6Al4V合金的闪速等离子体电解氧化与在生理介质中的电化学行为

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Transactions of Nonferrous Metals Society of china 2024年第4期34卷 1150-1166页

作者： h.MORA-SANchEZ c.RAMOS M.MOhEDANO B.TORRES R.ARRABAL E.MATYKiNA Departamento de ingeniería Química y de Materiales Facultad de Ciencias QuímicasUniversidad Complutense de Madrid28040 MadridSpain ciDETEc Basque Research and Technology Alliance(BRTA)Po.Miramón 19620014 Donostia-San SebastiánSpain Departamento Matemática Aplicada Ciencia e Ingeniería de Materiales y Tecnología ElectrónicaUniversidad Rey Juan CarlosC/Tulipán s/nMóstoles 28933MadridSpain

研究激光粉末床熔融增材制造(AM)(又称直接金属激光烧结)技术制备的Ti6Al4V合金等离子体电解氧化(PEO)处理及其电化学行为。通过短时间(<120 s)PEO处理(也称闪速PEO),在AM合金和传统合金表面制备了3~10μm厚、含ca和P的涂层。然后在改... 详细信息

研究激光粉末床熔融增材制造(AM)(又称直接金属激光烧结)技术制备的Ti6Al4V合金等离子体电解氧化(PEO)处理及其电化学行为。通过短时间(ca和P的涂层。然后在改良的α-MEM溶液中,通过动电位极化曲线和电化学阻抗谱(EiS)评估了合金的电化学行为。与传统合金相比,AM合金中形成了细小的层片状α显微组织和层间小尺寸的β相颗粒,这促使了火花的产生,从而促进了PEO涂层的生长。闪速PEO涂层提高了传统合金和AM合金的耐腐蚀性,最薄的涂层(i6Al4V由于其高的晶界密度,易受局部缝隙腐蚀的影响。而即使短至35 s的闪速PEO处理也足以成功避免这种情况。

关键词：增材制造激光粉末床熔融等离子体电解氧化闪速PEO 钛缝隙腐蚀 α-MEM

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Efficient Vision Transformers for Autonomous Off-Road Perception Systems

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Journal of computer and communications 2024年第9期12卷 188-207页

作者： Max h. Faykus iii Adam Pickeral Ethan Marquez Melissa c. Smith Jon c. calhoun holcombe Department of Electrical and computer Engineering Clemson University Clemson SC USA

The development of autonomous vehicles has become one of the greatest research endeavors in recent years. These vehicles rely on many complex systems working in tandem to make decisions. For practical use and safety reasons, these systems must not only be accurate, but also quickly detect changes in the surrounding environment. in autonomous vehicle research, the environment perception system is one of the key components of development. Environment perception systems allow the vehicle to understand its surroundings. This is done by using cameras, light detection and ranging (LiDAR), with other sensor systems and modalities. Deep learning computer vision algorithms have been shown to be the strongest tool for translating camera data into accurate and safe traversability decisions regarding the environment surrounding a vehicle. in order for a vehicle to safely traverse an area in real time, these computer vision algorithms must be accurate and have low latency. While much research has studied autonomous driving for traversing well-structured urban environments, limited research exists evaluating perception system improvements in off-road settings. This research aims to investigate the adaptability of several existing deep-learning architectures for semantic segmentation in off-road environments. Previous studies of two convolutional Neural Network (cNN) architectures are included for comparison with new evaluation of Vision Transformer (ViT) architectures for semantic segmentation. Our results demonstrate viability of ViT architectures for off-road perception systems, having a strong segmentation accuracy, lower inference speed and memory footprint compared to previous results with cNN architectures.

关键词： Semantic Segmentation Off-Road Vision Transformers cNNs Autonomous Driving

Layered Machinable and Electrically conductive Ti_2Alc and Ti_3Alc_2 ceramics:a Review

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Journal of Materials Science & Technology 2010年第5期26卷 385-416页

作者： x.h. Wang Y.c. Zhou Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences Shenyang110016 China

Ti2Alc and Ti3Alc2 are the most light-weight and oxidation resistant layered ternary carbides belonging to the MAx *** review highlights recent achievements on the processing,microstructure,physical,mechanical and chemical properties of these two machinable and electrically conductive ***2Alc and Ti3Alc2 display superior properties such as fracture toughness,electrical and thermal conductivities,and oxidation resistance over their binary *** paper provides a comprehensive overview of the processing-microstructure-property correlations of these two *** fields of applications for Ti2Alc and Ti3Alc2 are *** addition,we point out methods for further improving their properties in some specific applications through appropriate structural design and modification.

关键词： MAx phases Ti2Alc Ti3Alc2 Machinable ceramics