检索结果-南通市图书馆

材料科学与工程（中英文B版） 2017年第5期7卷 179-186页

作者： Mikio Waki Seiki A. Chiba z. song S. z.u K. Ohyama Wits Inc. Oshiage Sakura-City Tochigi 329-1334 Japan Chiba Science Institute Muguro-ward Tokyo 152-0023 Japan Fukuoka Institute of Technology Wajiro-Higashi Higashi-ku Fukuoka Fukuoka 811-0295 Japan

Editorial for Special Issue on Commonsense Knowledge and Reasoning:Representation,Acquisition and Applications

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Machine Intelligence Research 2024年第2期21卷 215-216页

作者： Kang Liu Yangqiu song Jeff z.Pan Institute of Automation Chinese Academy of SciencesChina Hongkong University of Science and Technology China The University of Edinburgh UK

Commonsense knowledge is an important resource for humans to understand the meanings or semantics of the *** ability to learn and own commonsense knowledge is one of the major gaps between humans and *** recent research progresses about deep learning,like Transformer,pre-trained models,etc.,have made amaz.ng breakthroughs in many fields,including computer version,natural language learning,etc.,letting the machines have rich commonsense knowledge and possess the reasoning ability is still difficult and under-resolved.

关键词： own let breakthrough

Flat Band and η-Pairing States in a One-Dimensional MoiréHubbard Model

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics Letters 2024年第4期41卷 69-76页

作者：王冉宋智 College of Physics and Materials Science Tianjin Normal UniversityTianjin 300387China School of Physics Nankai UniversityTianjin 300071China

A Moirésystem is formed when two periodic structures have a slightly mismatched period,resulting in unusual strongly correlated states in the presence of particle-particle *** periodic structures can arise from the intrinsic crystalline order and periodic external *** investigate a one-dimensional Hubbard model with periodic on-site potential of period n_(0),which is commensurate to the lattice *** large n_(0),the exact solution demonstrates that there is a midgap flat band with z.ro energy in the absence of Hubbard *** Moiréunit cell contributes two z.ro energy levels to the flat *** the presence of Hubbard interaction,the midgap physics is demonstrated to be well described by a uniform Hubbard chain in which the effective hopping and on-site interaction strength can be controlled by the amplitude and period of the external *** simulations are performed to demonstrate the correlated behaviors in the finite-siz.d Moiré Hubbard system,including the existence of an η-pairing state and bound pair *** finding provides a method to enhance the correlated effect by a spatially periodic external field.

关键词： oscillation interaction field

维普期刊数据库

井间数据的频率域声波模拟与反演第一部分:2.5维模拟法

在线全文

学校读者我要写书评

暂无评论

油气藏评价与开发 1996年第2期 83-84页

作者： z. M. song

在做井间实验时,震源和检波器常常要求在一个平面内,并且假设在这个平面垂直方向的介质特性变化很小。因此,除了震源为三维点源,而不是线源外,

关键词：频率域井间

THE EFFECT OF DIFFUSION BARRIER AND ANNEALING TEMPERATURE ON SURFACE MORPHOLOGY OF CU （CR） ALLOY FILMS

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

THE EFFECT OF DIFFUSION BARRIER AND ANNEALING TEMPERATURE ON...

A novel cylindrical sandwich plate inspired by beetle elytra and its compressive properties

第8届国际材联电子材料国际研讨会

作者： z. X. song Y. Wang K. W. XuState Key Laboratory for Mechanic Behavior of Materials Xi’an Jiaotong University 710049 China

＜正＞ Copper （Cu） is a highly promising alternative material to aluminum-based alloys for the next generation of ULSI circuits owing to its low electrical resistivity and high electromigration （EM） resistance. However, Cu line or film cannot completely show its advantage since Cu can easily diffuse to silicon （Si） substrate and the adhesion strength between Cu and Si is not well enough in some cases. It is well recogniz.d that adding a diffusion barrier between Cu film and Si substrate can resolve the diffusion problem and improve adhesion

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Science China Technological Sciences 2024年第11期67卷 3465-3476页

作者： song YiHeng RUAN SiHan HAO Ning OKABE YoJi School of Engineering The University of Tokyo School of Civil Engineering Southeast University School of Engineering RMIT University Institute of Industrial Science The University of Tokyo

The design and experimental analysis of a semi-cylindrical structure known as the cylindrical beetle elytron plate(CBEP) were presented. Radial compression tests and finite element simulation were performed on CBEPs under 30° and 45° inclined sliding support constraints, with a comparison made to cylindrical honeycomb plate(CHP). The study aims to investigate the superior compression performance and enhancement mechanisms of CBEPs. The results demonstrate that CBEPs exhibit a 14%–26% increase in specific load-bearing capacity and a 20% increase in specific energy absorption compared with CHPs with equal core wall thickness. Distinct “z.shaped” tearing failures were observed, with honeycomb plates showing tearing at the center of the honeycomb walls, while beetle elytron plates exhibited tearing along the midline of the trabeculae. Three different stress patterns,including elastic-plastic development stage of arch, plastic hinge node stage, and rigid node stage, were identified and analyz.d to explain the mechanical performance improvements and failure characteristics. Considering that structural damage to trabeculae mostly occurs at its junction with the skin, it is recommended to add chamfers to the junctions of CBEP. Therefore, this paper lays the groundwork for the engineering application of CBEP.

关键词： beetle elytron cylindrical beetle elytron plate compression performance failure characteristics enhancement mechanism

Design Strategies for Aqueous z.nc Metal Batteries with High z.nc Utiliz.tion: From Metal Anodes to Anode-Free Structures

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Nano-Micro Letters 2024年第4期16卷 305-349页

作者： Xianfu z.ang Long z.ang Xinyuan Jia Wen song Yongchang Liu School of Materials Science and Engineering University of Science and Technology Beijing30 College RoadBeijing 100083People’s Republic of China Beijing Advanced Innovation Center for Materials Genome Engineering Institute for Advanced Materials and TechnologyState Key Laboratory for Advanced Metals and MaterialsUniversity of Science and Technology BeijingBeijing 100083People’s Republic of China

Aqueous z.nc metal batteries(Az.Bs)are promising candidates for next-generation energy storage due to the excellent safety, environmental friendliness, natural abundance, high theoretical specific capacity, and low redox potential of z.nc(z.) metal. However,several issues such as dendrite formation, hydrogen evolution, corrosion, and passivation of z. metal anodes cause irreversible loss of the active materials. To solve these issues, researchers often use large amounts of excess z. to ensure a continuous supply of active materials for z. anodes. This leads to the ultralow utiliz.tion of z. anodes and squanders the high energy density of Az.Bs. Herein, the design strategies for Az.Bs with high z. utiliz.tion are discussed in depth, from utiliz.ng thinner z. foils to constructing anode-free structures with theoretical z. utiliz.tion of 100%, which provides comprehensive guidelines for further research. Representative methods for calculating the depth of discharge of z. anodes with different structures are first summariz.d. The reasonable modification strategies of z. foil anodes, current collectors with pre-deposited z., and anode-free aqueous z. metal batteries(AF-Az.Bs) to improve z. utiliz.tion are then detailed. In particular, the working mechanism of AF-Az.Bs is systematically introduced. Finally, the challenges and perspectives for constructing high-utiliz.tion z. anodes are presented.

关键词： Aqueous z.nc metal batteries z.nc anodes High z.nc utiliz.tion Depth of discharge Anode-free structures

维普期刊数据库

Chronic administration of triclosan leads to liver fibrosis through hepcidin-ferroportin axis-mediated iron overload

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2024年第3期137卷 144-154页

作者： Jing Liu Lecong z.ang Fang Xu Ping z.ang Yang song College of Eco-Environmental Engineering Guizhou Minzu UniversityGuiyang 550025China The Institute of Karst Wetland Ecology Guizhou Minzu UniversityGuiyang 550025China State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China

Triclosan(TCS)has been manufactured as an antibacterial compound for half a ***,it is widely used in various personal care products;however,its potential adverse effects raise a lot of ***,we create a long-term oral administration mouse model and identify the corresponding hepatotoxicity of *** discover that daily intragastric administration of 10 mg/kg TCS to mice for 12 weeks results in severe hepatic *** study displays that hepatic iron increased 18%,23%and 29%upon oral TCS treatment for4,8 and 12 weeks,*** by hepatic iron variation,splenic and duodenal iron are increased,which indicates systemic iron *** only excessive iron accumulated in the liver,abnormal hepatic malondialdehyde,prostaglandin synthase 2 and glutathione peroxidase 4 are pointed to *** study uncovers that hepcidin expression increases 7%,10%,4%in serum and 2.4-,4.8-,and 2.3-fold on transcriptional levels upon TCS exposure for 4,8 and 12 weeks,*** together,the mice in the TCS-treated group show disordered systemic iron homeostasis via the upregulated hepatic hepcidin-ferroportin ***,both hepatic iron overload(systemic level)and hepatocyte ferroptosis(cellular level)are accused of TCS-induced liver ***■,an iron scavenger,significantly ameliorates TCS-induced liver *** summary,this study confirms the impact of TCS on liver fibrosis;a critical signal pathway is also *** significance of the current study is to prompt us to reevaluate the“pros and cons”of TCS applications.

关键词： Triclosan Iron metabolism Hepcidin Hepatotoxicity Liver fibrosis

维普期刊数据库

Enhancing solar-driven overall water splitting via both sacrifice and noble metal free photocatalysis: copper cluster/boron-doped carbon nitride catalysts

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2024年第11期67卷 3886-3896页

作者： Yun-Dong Cao Yuxi z.ang Jian song Hong Liu z.iyuan song Lin-Lin Fan Cai-Li Lv Guang-Gang Gao School of Materials Science and Engineering University of Jinan

The major impediment to the additional industrializ.tion of water splitting is the high cost of the co-catalyst made of noble metals and the sacrificial reagent. A binary photocatalytic system, consisting of B-doped g-C3N4nanosheets(Cu20@BCN-X) and atomically accurate copper clusters, is designed in this study. The copper clusters serve as co-catalysts for H2evolution and exhibit Pt-like activity, whereas the nanosheets serve as carriers and semiconductor components for O2evolution. Such binary system, created using simple techniques, demonstrates hydrogen bonding interactions that promote synergistic effects and efficient binding and charge transfer across the interface between the two components. Band position manipulation of carbon nitride nanosheets demonstrates a z.scheme charge transfer mechanism between the nanosheets and copper clusters. This photocatalytic system can accomplish the photocatalytic overall water splitting process(259.9 μmol g-1h-1of H2and 129.4 μmol g-1h-1of O2) without using sacrificial agents or noble metal co-catalysts. This work lays the foundation for the design of overall water splitting catalysts by precisely manipulating the energy levels, and it also paves the way for commercializ.d photocatalytic catalysts that do not require noble metals or sacrificial chemicals.

关键词： copper clusters band modulation photocatalysts water splitting

Atomically dispersed calcium as solid strong base catalyst with high activity and stability

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Green Energy & Environment 2024年第10期9卷 1619-1626页

作者： Xiang-Bin Shao z.i-Wei Xing Si-Yu Liu Ke-Xin Miao Shi-Chao Qi song-song Peng Xiao-Qin Liu Lin-Bing Sun State Key Laboratory of Materials-Oriented Chemical Engineering Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM)College of Chemical EngineeringNanjing Tech University30 South Puzhu Road

Solid strong base catalysts are highly attractive for diverse reactions owing to their advantages of neglectable corrosion,facile separation,and environmental ***,their widespread applications are impeded by basic components aggregation and low *** this work,we fabricate single calcium atoms on graphene （denoted as Ca1/G） by use of a redox strategy for the first time,producing solid strong base catalyst with high activity and *** precursor Ca（NO3）2is first reduced to CaO at 400℃ by the support graphene,forming CaO/G with conventional basic sites,and the subsequent reduction at 850℃ results in the generation of Ca1/G with atomically dispersed *** characteriz.tions reveal that Ca single atoms are anchored on graphene in tetra-coordination （Ca–C2–N2） where N is in situ doped from Ca（NO3）*** atomically dispersed Ca,along with their anchoring on the support,endow Ca1/G with high activity and stability toward the transesterification reaction of ethylene carbonate with *** turnover frequency value reaches 128.0 h-1on Ca1/G,which is much higher than the traditional counterpart CaO/G and various reported solid strong bases (2.9–46.2 h-1).Moreover,the activity of Ca1/G is well maintained during 5 cycles,while 60% of activity is lost for the conventional analogue CaO/G due to the leaching of Ca.

关键词： Solid strong base Single Ca atoms Heterogeneous catalysts Transesterification Reaction