检索结果-内蒙古大学图书馆

Chinese Control Conference (CCC)

作者： Zhan Zhenxing Fu Dongmei Zhouke Zhang Dawei School of Automation and Electrical Engineering University of Science and Technology Beijing Beijing China Beijing Engineering Research Center of Industrial Spectrum Imaging University of Science and Technology Beijing Beijing China School of Advanced Engineering University of Science and Technology Beijing Beijing China Institute for Advanced Materials and Technology University of Science and Technology Beijing Beijing China

Patent analysis is a technique that utilizes data analysis methods to explore potential content or relationships within patents. As one of the important techniques in patent analysis, patent similarity measurement is a subject of concern and research to determine what specific methods can comprehensively and accurately utilize patent information for similarity measurement. This paper proposes a knowledge graph-based patent similarity measurement method that simultaneously considers bibliographic information, content semantic information, global importance of knowledge, and prior knowledge in the field of patents. Finally, this paper uses this method to analyze and mine the characteristics of patent subclusters in the field of corrosion inhibitors, and compares the analysis results with those of the traditional SAO structure method to verify the effectiveness of the proposed method.

关键词：

来源：评论

学校读者我要写书评

暂无评论

The tailoring of nanofiltration membrane structure for mono/divalent anions separation via precisely adjusting the reaction site distance

引用

Journal of Membrane science 2023年 668卷

作者： Shi, Le Liu, Sihua Hung, Wei-Song Shi, Wenxiong Lu, Xiaolong Wu, Chunrui State Key Laboratory of Separation Membranes and Membrane Processes School of Material Science and Engineering Tiangong University Tianjin300387 China Advanced Membrane Materials Research Center Graduate Institute of Applied Science and Technology National Taiwan University of Science and Technology Taipei10607 Taiwan Institute for New Energy Materials and Low Carbon Technologies School of Materials Science and Engineering Tianjin University of Technology Tianjin300387 China

To improve the selectivity of nanofiltration membranes (NFMs) for multi/monovalent anions, including SO42−/Cl−, a strategy to moderately amplify the pore size while maintaining chargeability of the membranes was proposed. Four diamine monomers based on piperazine ring, with reaction site distance increased from 2.8 Å to 5.1 Å, were adopted and the effect of the monomer structure especially the reaction site distance on the structure and performance of the NFMs was studied. Position annihilation spectroscopy and molecular dynamics simulation were adopted to provide thorough characterization of the separation layer of the NFMs. The results showed that NFMs prepared by monomers with moderately increased reaction site distance displayed a moderately amplified pore size, which could facilitate the penetration of Cl− and thus improve SO42−/Cl− separation ability. The Na2SO4/NaCl selectivity got 10.0 with water permeability up to 18.5 L m−2 h−1 bar−1, exceeding the upper-bound of permeation flux and Na2SO4/NaCl selectivity of membranes prepared by traditional interfacial polymerization. © 2022 Elsevier B.V.

关键词： Pore size

来源：评论

学校读者我要写书评

暂无评论

Effect of annealing conditions on surface morphology and ferroelectric domain structures of BiFeO_(3) thin films

引用

Journal of advanced Dielectrics 2024年第2期14卷 77-82页

作者： Minchuan Liang Jia Yang Huayu Yang Chen Liang Zhenyue Nie Hui Ai Tong Zhang Ji Ma Houbing Huang Jing Wang Advanced Research Institute of Multidisciplinary Science and School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081P.R.China Analysis and Testing Center Beijing Institute of Technology Beijing 100081P.R.China School of Material Science and Engineering Kunming University of Science and Technology Kunming Yunnan 650093P.R.China

Ferroelectric materials are widely used in the applications of electronic devices due to their robust spontaneous *** surface roughness of ferroelectric thin films,which is closely related to the morphology,can play an important role in determining the ferroelectric domain *** this work,we have investigated the influence of annealing conditions on the surface morphology of epitaxial BiFeO_(3) and SrRuO_(3) thin films prepared by pulsed laser deposition on SrTiO_(3)(001)*** is found that the morphology of the thin films is sensitive to the annealing time and cooling rate,and the corresponding surface roughness decreases with increasing annealing time and decreasing cooling *** addition,the ferroelectric domain structures of BiFeO_(3) films have been investigated by piezoelectric force microscopy,which shows a significant improvement in domain size and reverse piezoelectric response in the thin films with decreasing surface *** work provides a simple way to predict and improve the ferroelectric domain structures by in situ annealing.

关键词： BiFeO_(3) thin films in situ annealing surface morphology domain structure

来源：评论

学校读者我要写书评

暂无评论

Visualization of 4d orbital electrons in a pyrochlore-type oxide

引用

Physical Review B 2023年第2期108卷 024103-024103页

作者： Shunsuke Kitou Yoshio Kaneko Yuiga Nakamura Kunihisa Sugimoto Yusuke Nomura Ryotaro Arita Yoshinori Tokura Hiroshi Sawa Taka-hisa Arima RIKEN Center for Emergent Matter Science Wako 351-0198 Japan Japan Synchrotron Radiation Research Institute (JASRI) SPring-8 Hyogo 679-5198 Japan Department of Chemistry Kindai University Osaka 577-8502 Japan Department of Applied Physics and Physico-Informatics Keio University Yokohama 223-8522 Japan Research Center for Advanced Science and Technology The University of Tokyo Tokyo 153-8904 Japan Department of Applied Physics The University of Tokyo Tokyo 113-8656 Japan Tokyo College The University of Tokyo Tokyo 113-8656 Japan Department of Applied Physics Nagoya University Nagoya 464-8603 Japan Department of Advanced Materials Science The University of Tokyo Kashiwa 277-8561 Japan

A real-space observation of the distribution state of valence electrons, which is responsible for physical properties, is a key methodology to understand the relation between the structure and functions of matter. Here, we observe Mo 4d orbital electrons at subangstrom resolution in a pyrochlore-type oxide Nd2Mo2O7 based on the core differential Fourier synthesis (CDFS) analysis of high-energy x-ray diffraction data. The Mo4+ 4d2 orbital state is directly determined from the obtained valence electron density (VED) distribution. We also find a dip in the radial profile corresponding to a node of the 4d wave function. The VED distribution around the Nd site might be ascribed to the hybridization of neighboring O 2p with Nd 6s/6p/5d orbitals as well as the anisotropic Nd3+ 4f3 electrons, which cannot be reproduced by the simple j-j or LS coupling pictures. In this paper, we demonstrate the usefulness of the CDFS analysis to investigate the orbital states in crystalline materials.

关键词： Atomic orbital Crystal structures Pyrochlores X-ray diffraction

来源：评论

学校读者我要写书评

暂无评论

Tailoring small-molecule acceptors through asymmetric side-chain substitution for efficient organic solar cells

引用

science China Materials 2025年第3期68卷 860-867页

作者： Lan Xie Dingding Qiu Xianghao Zeng Chung Hang Kwok Yan Wang Jia Yao Kan Ding Lu Chen Jicheng Yi Harald Ade Zhixiang Wei Wai-Yeung Wong He Yan Han Yu Department of Applied Biology and Chemical Technology and Research Institute for Smart Energy The Hong Kong Polytechnic UniversityHong Kong 999077China Department of Chemistry and Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction Hong Kong University of Science and TechnologyHong Kong 999077China CAS Key Laboratory of Nanosystem and Hierarchical Fabrication National Center for Nanoscience and Technology Beijing 100190China Department of Physics and Organic and Carbon Electronics Laboratories(ORaCEL) North Carolina State UniversityRaleighNC 27695USA

Side chain engineering of small-molecule acceptors(SMAs)is a promising strategy for improving device efficiency in organic solar cells(OSCs).This study investigates the parent SMAs of BT-BO and BT-TBO,along with the newly synthesized asymmetric SMA,BT-ASY,which features branched alkyl chains and thiophene side chains substituted at theβpositions of the thiophene units,*** exhibiting comparable optical and electrochemical properties,the PM6:BT-ASY-based device achieves a power conversion efficiency(PCE)of 18.08%representing a significant improvement over its symmetric *** enhancement is primarily attributed to improved charge mobility,extended carrier lifetimes,optimized molecular packing,and effective phase separation,as confirmed by grazing incidence wide-angle X-ray scattering *** findings highlight that asymmetric side-chain strategy enhancesπ-πstacking and electronic coupling,offering a simple yet effective approach to improving photovoltaic *** work underscores the potential of asymmetric structural modifications in SMAs for advancing OSC technology and renewable energy solutions.

关键词： organic solar cells side chain engineering active layer asymmetric acceptors thiophene side chains

来源：评论

学校读者我要写书评

暂无评论

The effect of nitrogen on the compressibility and conductivity of iron at high pressure

引用

Geoscience Frontiers 2021年第2期12卷 983-989页

作者： Yukai Zhuang Xiaowan Su Nilesh P.Salke Zhongxun Cui Qingyang Hu Dongzhou Zhang Jin Liu Center for High Pressure Science and Technology Advanced Research(HPSTAR) Beijing 100094China School of Earth and Space Sciences Peking UniversityBeijing 100871China Hawai’i Institute of Geophysics and Planetology School of Ocean and Earth Science and TechnologyUniversity of Hawai’i at ManoaHonoluluHI96822USA

Although nitrogen in the Earth’s interior has attracted significant attention recently,it remains the most enigmatic of the light elements in the Earth’s *** this work,synchrotron X-ray diffraction(XRD)and electrical conductivity experiments were conducted on iron nitrides(Fe_(2)N and Fe_(4)N)in diamond anvil cells(DACs)up to about 70 GPa at ambient *** results show that iron nitrides are stable up to at least 70 *** the equation of state(EOS)parameters,iron nitrides are more compressible than iron ***,using the van der Pauw method and Wiedemann-Franz law,the electrical and thermal conductivity of samples were determined to be much lower than that of iron *** conductivities of Fe_(2)N and Fe_(4)N were similar at 20–70 GPa,suggesting no evident effects by varying the N stoichiometries in iron *** nitrides are less dense and conductive but more compressible than carbides at 0–70 *** study indicates that less nitrogen than carbon can explain geophysical phenomena in the deep Earth,such as the density deficit.

关键词： High pressure Iron nitrides Synchrotron X-ray diffraction Electrical conductivity

来源：评论

学校读者我要写书评

暂无评论

Coherent Doppler Lidar Using Optical Single Sideband Modulation

Coherent Doppler Lidar Using Optical Single Sideband Modulat...

引用

Pacific Rim Conference on Lasers and Electro-Optics (CLEO/Pacific Rim)

作者： Sean Wolfe Takuma Shirahata Shinji Yamashita Sze Yun Set Research Center for Advanced Science and Technology The University of Tokyo Meuguro-ku Tokyo Japan

This paper presents the first implementation of Coherent Doppler LiDAR using an Optical Single Sideband Modulator. Experiments show that range resolution and Doppler shift estimates are greatly improved over the tradi...

关键词：

来源：评论

学校读者我要写书评

暂无评论

Sulfolane‑Based Flame‑Retardant Electrolyte for High‑Voltage Sodium‑Ion Batteries

引用

Nano-Micro Letters 2025年第2期17卷 498-516页

作者： Xuanlong He Jie Peng Qingyun Lin Meng Li Weibin Chen Pei Liu Tao Huang Zhencheng Huang Yuying Liu Jiaojiao Deng Shenghua Ye Xuming Yang Xiangzhong Ren Xiaoping Ouyang Jianhong Liu Biwei Xiao Jiangtao Hu Qianling Zhang Graphene Composite Research Center College of Chemistry and Environmental EngineeringShenzhen UniversityShenzhen 518060People’s Republic of China Center of Electron Microscopy State Key Laboratory of Silicon and Advanced Semiconductor MaterialsSchool of Materials Science and EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China GRINM(Guangdong)Research Institute for Advanced Materials and Technology FoshanGuangdong 528051People’s Republic of China College of Energy Engineering Zhejiang UniversityHangzhouZhejiang 310027People’s Republic of China School of Materials Science and Engineering Xiangtan UniversityXiangtan 411105People’s Republic of China Shenzhen Eigen-Equation Graphene Technology Co.Ltd Shenzhen 518000People’s Republic of China

Sodium-ion batteries hold great promise as next-generation energy storage ***,the high instability of the electrode/electrolyte interphase during cycling has seriously hindered the development of *** particular,an unstable cathode–electrolyte interphase(CEI)leads to successive electrolyte side reactions,transition metal leaching and rapid capacity decay,which tends to be exacerbated under high-voltage ***,constructing dense and stable CEIs are crucial for high-performance *** work reports localized high-concentration electrolyte by incorporating a highly oxidation-resistant sulfolane solvent with non-solvent diluent 1H,1H,5H-octafluoropentyl-1,1,2,2-tetrafluoroethyl ether,which exhibited excellent oxidative stability and was able to form thin,dense and homogeneous *** excellent CEI enabled the O3-type layered oxide cathode NaNi_(1/3)Mn_(1/3)Fe_(1/3)O_(2)(NaNMF)to achieve stable cycling,with a capacity retention of 79.48%after 300 cycles at 1 C and 81.15%after 400 cycles at 2 C with a high charging voltage of 4.2 *** addition,its nonflammable nature enhances the safety of *** work provides a viable pathway for the application of sulfolane-based electrolytes on SIBs and the design of next-generation high-voltage electrolytes.

关键词： Sodium-ion batteries Sulfolane-based electrolyte High voltage Layered oxide cathode Flame retardant

来源：评论

学校读者我要写书评

暂无评论

Bioturbation and the effects on benthic flux of nitrogen in a large eutrophic lake: Insights from ²²⁴Ra/²²⁸Th disequilibrium and inverse geochemical modelling

引用

Geochimica et Cosmochimica Acta 2025年 400卷 265-278页

作者： Shi, Xiaoyan Chen, Guodong Mao, Rong Luo, Xin Jiao, Jiu Jimmy Lu, Meiqing Wang, Tianwei Hu, Wenli Kuang, Xingxing School of Environmental Science and Engineering Southern University of Science and Technology Shenzhen China Department of Earth Sciences The University of Hong Kong Hong Kong Earth and Environment Research Institute Zhejiang Institution of Research and Innovation The University of Hong Kong Hangzhou China Archaeal Biology Center Institute for Advanced Study Shenzhen University Shenzhen China

Benthic fluxes are critical pathways for constituent exchanges and biogeochemical interactions across sediment–water interface. To comprehensively evaluate the modulation of bioturbation on the benthic fluxes of nutrients, we present a novel inverse geochemical modelling framework in near-surface sediments of Lake Taihu, a highly eutrophic freshwater lake in eastern China. This approach incorporates the disequilibrium of ²²⁴Ra/²²⁸Th and concentration profiles of additional constituents (SO₄^2-, NH₄⁺, NO₃^– and NO₂^–) through simulation and Bayesian theorem, enabling the estimation of bio-irrigation coefficient (α) and corresponding reaction rates. Based on the sediment columns collected from different segments of the lake, the model demonstrates vertical variability of α, with an average range of 0.60 × 10^-4 to 5.01 × 10^-4 s⁻¹. The calculated reaction rates and microbial taxa indicate the dominance of chemoheterotrophy, where NO₃^– serves as an electron acceptor during the degradation of organic matter in the anoxic sediment environment to generate NH₄⁺. The estimation of nitrogen benthic flux reveals that bioturbation predominates the export from sediments to the lake, and the directions of the internal nutrient fluxes across sediment–water interface are primarily controlled by nutrient loadings in the overlying lake water. This study introduces a systematic quantification to advocate that bioturbation is crucial in regulating nutrient variability by influencing both the reaction and flux rates, and the workflow expands the application of ²²⁴Ra/²²⁸Th disequilibrium to near-surface sediments in freshwater lacustrine systems, advancing the technique in tracing proxies for benthic fluxes in lakes. © 2025 Elsevier Ltd

关键词： 224Ra/228Th disequilibrium Bioturbation Eutrophic lakes Inverse geochemical modelling Sediment–water interface

来源：评论

学校读者我要写书评

暂无评论

Integration technology for Superconducting Quantum Circuits

Integration Technology for Superconducting Quantum Circuits

引用

IEEE Silicon Nanoelectronics Workshop (SNW)

作者： Shiro Kawabata Global Research and Development Center for Business by Quantum-AI Technology (G-QuAT) National Institute of Advanced Industrial Science and Technology (AIST) Japan Faculty of Computer and Information Sciences Hosei University Japan

ISBN: (数字)9798350391633

ISBN: (纸本)9798350391640

Superconducting quantum circuits are one of the promising platforms for fault-tolerant universal quantum computers (FTQCs) and quantum annealing machines. We will report our recent activities on integration technology for large-scale superconducting quantum circuits, including 3D integration, fabrication, SPICE simulation, and superconducting control circuits. In addition, theoretical studies on superconducting bosonic qubits and quantum algorithm for FTQC will be presented.

关键词： Computers Annealing Quantum algorithm Qubit Quantum annealing SPICE Silicon

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：