检索结果-南通市图书馆

Neuroscience Bulletin 2022年第9期38卷 1041-1056页

作者： Shi-hao Gao Yong Tao Yang zhu hao huang Lin-Lin Shen Chang-Yue Gao Department of Rehabilitation Daping HospitalArmy Medical UniversityChongqing400042China Department of Respiratory and Critical Care Medicine Xinqiao HospitalArmy Medical UniversityChongqing400037China Army 953 Hospital Army Medical UniversityShigatse857000China

Functional changes in synaptic transmission from the lateral entorhinal cortex to the dentate gyrus(LEC-DG)are considered responsible for the chronification of ***,the underlying alterations in fan cells,which are the predominant neurons in the LEC that project to the DG,remain ***,we investigated possible mechanisms using a rat model of complete Freund’s adjuvant(CFA)-induced inflammatory *** found a substantial increase in hyperpolarization-activated/cyclic nucleotide-gated currents(Ih),which led to the hyperexcitability of LEC fan cells of CFA *** phenomenon was attenuated in CFA slices by activating dopamine D2,but not D1,*** activation of the ventral tegmental area-LEC projection had a D2 receptor-dependent analgesic ***-LEC microinjection of a D2 receptor agonist also suppressed CFA-induced behavioral hypersensitivity,and this effect was attenuated by pre-activation of the *** findings suggest that down-regulating the excitability of LEC fan cells through activation of the dopamine D2 receptor may be a strategy for treating chronic inflammatory pain.

关键词： Inflammatory pain Lateral entorhinal cortex Neuronal hyperexcitability Dopamine D2 receptor HCN current

Slicing capacity-centered mode selection and resource optimization for network-assisted full-duplex cell-free distributed massive MIMO systems

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

Science China(Information Sciences) 2024年第1期67卷 203-220页

作者： jie WANG Jiamin LI Pengcheng zhu Dongming WANG Hongbiao ZHANG Yue hao Bin SHENG National Mobile Communications Research Laboratory Southeast University 2. Purple Mountain Laboratories China Mobile Research Institute

Network-assisted full-duplex(NAFD) cell-free distributed massive multiple-input multipleoutput(MIMO) systems enable uplink(UL) and downlink(DL) communications within the same timefrequency resources,which potentially reduce latency by avoiding the overhead of switching UL/DL ***,how to choose UL/DL modes remains an important factor affecting system *** the dramatic increase in the number of users and access points(APs),massive access brings significant overhead in the mode ***,the different quality of service(QoS) among users also makes the effective utilization of resources *** one of the most promising technologies in sixth-generation(6G),network slicing enables the adaptive configuration of limited UL/DL resources through the resource isolation assisted NAFD ***,we propose a slicing capacity-centered *** this scheme,APs are motivated by slicing requirements and associated slices to form different *** mode selection and resource allocation are performed within each subsystem to reduce overhead and improve resource *** implement this scheme efficiently,a double-layer deep reinforcement learning(DRL)mechanism is used to realize the joint optimization of mode selection and resource *** results show that the slicing capacity-centered scheme can effectively improve resource utilization and reduce overhead.

关键词： network-assisted full-duplex network slicing mode selection resource optimization deep reinforcement learning

同方期刊数据库

Biomass-Derived Nitrogen and Sulfur Co-Doped 3D Carbon Networks with Interconnected Meso-Microporous Structure for High-Performance Supercapacitors

在线全文

学校读者我要写书评

暂无评论

Transactions of Nanjing University of Aeronautics and Astronautics 2018年第4期35卷 590-602页

作者： zhu Jiajia hao Xiaodong Wang jie Guo Hongshuai Dou Hui Zhang Xiaogang Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies College of Material Science and EngineeringNanjing University of Aeronautics and Astronautics

Three-dimensional(3D)carbon networks have been explored as promising capacitive materials thanks to their unique structural features such as large ion-accessible surface area and interconnected porous networks,thus enhancing both ions and electrons ***,sustainable bacterial cellulose(BC)is used both precursor and template for facile synthesis of free-standing N,S-codoped 3Dcarbon networks(a-NSC)by the pyrolysis and activation of polyrhodanine coated *** synthesized a-NSC shows highly conductive interconnected porous networks(24S·cm^(-1)),large surface area(1 420m^2·g^(-1))with hierarchical meso-microporosity,and high-level heteroatoms codoping(N:3.1%in atom,S:3.2%in atom).Benefitting from these,a-NSC as binder-free electrode exhibits an ultrahigh specific capacitance of 340F·g^(-1)(24μF·cm^(-2))at the current density of 0.5A·g^(-1)in 6MKOH electrolyte,high-rate capability(71%at 20A·g^(-1))and excellent cycle ***,the assembled symmetrical supercapacitor displays a much short time constant of 0.35sin 1MTEABF4/AN electrolyte,obtaining a maximum energy density of 32.1W·h·kg^(-1 )at power density of 637W·kg^(-1).The in situ multi-heteroatoms doping enables biocellulose-derived carbon networks to exploit its full potentials in energy storage applications,which can be extended to other dimensional carbon nanostructures.

关键词： bacterial cellulose 3D carbon networks free-standing N,S-codoping supercapacitors

Experimental and Three-Dimensional Numerical Simulation of Phenomena Induced by Submerged Oblique Jet Scouring

在线全文

学校读者我要写书评

暂无评论

Fluid Dynamics & Materials Processing 2024年第8期20卷 1799-1821页

作者： hao Chen Xianbin Teng Faxin zhu Zhibin Zhang jie Wang School of Naval Architecture and Maritime Zhejiang Ocean UniversityZhoushan316022China School of Marine Engineering Guangzhou Maritime UniversityGuangzhou510725China

Scouring experiments were conducted using a three-dimensional laser scanning technology for angles of the jet spanning the interval from 0°to 30°,and the characteristics of the scour hole in equilibrium conditions were investigated *** results indicate that the optimal scouring effects occur when the jet angle is in the ranges between 15°and 20°.Moreover,the dimensionless profiles of the scour hole exhibit a high degree of similarity at different jet *** simulations conducted using the Flow-3D software to investigate the bed shear stress along the jet impingement surface have shown that this stress is influenced by both the resultant force and the jet impingement surface *** reaches its maximum value when the jet is vertical,decreases rapidly as the jet starts to tilt,then increases slightly,and decreases again significantly when the angle exceeds 20°.

关键词： Submerged jet jet angle experimental study numerical simulation bed shear stress

Modified Multispectral Space for Color Representation

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

Geo-Spatial Information Science 2005年第4期8卷 306-310页

作者： PEI Xiandeng KONG Lingwang zhu Yuanhong huang hao School of Computer Science and Technology Huazhong University of Science and Technology Guanshan Wuhan 430074 China 不详

Conventional multispectral space for color representation is modified by algorithm of cluster analysis and principal component analysis. Results show that the newer modified multispectral space not only keeping the structure of the original space but eliminating zero crosses as well its accuracy of color representation is higher than the conventional.

关键词： multispectral space color representation cluster analysis principal component analysis

汉语语音识别中基于区分性权重训练的声调集成方法

在线全文

学校读者我要写书评

暂无评论

声学学报 2008年第1期33卷 1-8页

作者：黄浩朱杰上海交通大学电子工程系上海200240

提出一种区分性方法,将声调信息加入大词汇量连续语音识别系统中。该方法根据最小音子错误准则,区分性地圳练模型相关的概率权重。利用这些权重对传统基于传统谱特征的隐马尔可夫模型概率以及声调模型概率进行加权,通过调整模型之间的... 详细信息

提出一种区分性方法,将声调信息加入大词汇量连续语音识别系统中。该方法根据最小音子错误准则,区分性地圳练模型相关的概率权重。利用这些权重对传统基于传统谱特征的隐马尔可夫模型概率以及声调模型概率进行加权,通过调整模型之间的作用程度提高系统识别率。推导了利用扩展Baum-welch算法的权重更新公式。对不同模型权重组合策略进行了评估,并利用权重之间的平滑方法来克服权重训练过拟合的问题。分别通过大词汇连续语音的带调音节输出和汉字输出两种识别任务来验证区分性模型权重训练的性能。实验结果表明在两种识别任务上,区分性的模型权重较使用全局模型权重分别获得9.5%以及4.7%的相对误识率降低。这表明了区分性模型权重对提高声调集成性能的有效性。

关键词：汉语语音识别权重训练集成方法区分性声调隐马尔可夫模型 Baum-Welch算法语音识别系统

Investigate the nonuniformity of low-energy electron beam with large cross-sections

在线全文

学校读者我要写书评

暂无评论

Science China(Technological Sciences) 2012年第4期55卷 997-1000页

作者： REN jie huang JianMing ZHANG YuTian LI DeMing zhu NanKang Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China Suzhou CNNC Huadong Radiation Co. LtdSuzhou 215200China

Over the past decades, low-energy electron accelerators have been used worldwide for surface curing and sterilization. The beam nonuniformity is an important parameter of the low-energy electron beam with large cross-sections. A simple and accurate measurement system of nonuniformity for the low-energy electron beam with large cross-sections was developed. The main concept consists in the measurement of nonuniformity, which is realized by using a linear actuator to drive two scanning wires through the beam's cross-sections at a fixed speed. The beam distribution can be obtained by sending/collecting the current signals to/from the Data Acquisition (DAQ) software on a laptop by a USB DAQ card. This device is very convenient for the performance testing of a new accelerator at the manufacturer's site. The distribution of the homemade low voltage electron accelerator EBS-300-50 was measured and evaluated.

关键词： low-energy electron beam large cross-sections electron beam industry accelerator beam nonuniformity measurement

Fieldwork Test Research of the Impact on Building Physical Environment on Six Types of Atrium Space in Cold Climates

在线全文

学校读者我要写书评

暂无评论

Journal of Harbin Institute of Technology(New Series) 2014年第4期21卷 84-90页

作者： Ye-hao Song Jun-jie Li Ning zhu Jia-Liang Wang Zheng-hao Lin School of Architecture Tsinghua University Key Laboratory of Urban-Rural Eco Planning & Green Building Ministry of EducationTsinghua University

Since the research on verification to passive design strategies in sustainable building is at the initial stage,and its test method and verification conclusion are not scientific enough to validate,this paper proposes the necessity of building physical environmental monitoring to quantitative optimization of passive strategies efficiency from the perspective of architecture design and building environment. Adopting comparative research method,this research chooses six types of atrium space in cold climate in China as a prototype,focusing on building physical environmental performance difference in and between atrium and building main space. Spatial parameters of the atrium space will be divided into four factors: spatial geometry,interfacial properties,internal and external related categories. With subdividing these four factors into sub-factors,this paper makes crosscomparison among the sub-factors to clarify passive strategies effectiveness in atrium. Data comparison analysis shows that Winter atrium passive strategy in cold regions from traditional view is not obvious in practical application,and test data need to be stratified refined in atrium design in case of optimizing passive strategy from building prototype perspective.

关键词： atrium space building physical environment fieldwork test space effect

Research on Two Types of Buffer Zone Impact on Surrounding Office Space Environment in Winter in Cold Climate Zone—a Fieldwork in Architectural Design Institute Building of Tsinghua University,Beijing

在线全文

学校读者我要写书评

暂无评论

Journal of Harbin Institute of Technology(New Series) 2014年第5期21卷 33-39页

作者： Ye-hao Song Jun-jie Li Ning zhu Jia-Liang Wang Shi-Meng hao School of Architecture Tsinghua University Key Laboratory of Eco Planning & Green Building Ministry of EducationTsinghua University

Building buffer zone space is not only one of essential approaches for better mental quality of interior building space, but also an important factor that may influence interior thermal comfort and energy consumption. This study aims to analyze regulative advantages of buffer zone to the surrounding functional spaces. Based on a fieldwork test in a typical office building in cold climate zone in Beijing,China,the monitor data show interior physical performance in the Winter. The research selects two types of different buffer zones in the same building. One is a south-faced greenhouse which has large dimension with plenty of vegetation,and the other is a simple atrium in the middle of five floor building with mount of skylights. The factors and their influence to surrounding functional spaces and the whole building are found out from the comparisons of collected data by floor to floor monitor test on both buffer zones at the same time. The comparisons of two types of buffer zones conclude that the greenhouse is more effective to air quality regulation but not so clearly wellperformed to thermal buffering as expected due to the dominate active central heating in the Winter. This fieldwork test results for building performance can be helpful for both architects and engineers in the early phase of sustainable design.

关键词： public building buffer zone building performance fieldwork test space effect

Recyclable Joule heated low shrinkage carbon nanofiber aerogels for microscale oil/water separation

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2022年第32期127卷 89-97页

作者： Guangkai Hu Dong Liu Sidi Yin Bin Yu Tao huang hao Yu Meifang zhu State Key Laboratory for Modification of Chemical Fibers&Polymer Materials College of Materials Science&EngineeringDonghua UniversityShanghai 201620China

Aerogels have shown great potential as oil adsorbents but their application to the removal of microscale oil from water and their recycling remains *** present work proposed a freeze-shaping method for fabricating carbon nanofiber aerogels(CNFAs)based on the direct use of one-dimensional(1D)carbon nanofibers(CNF)rather than carbonization of polymer *** technique greatly reduces volume shrinkage and increases the three-dimensional(3D)structural stability of the *** nanotubes(CNT)and gelatinized starch were incorporated in these aerogels as a conductive enhancement agent and binder,respectively,forming a“vine(CNT)-wrapped tree(CNF)”structure that improved mechanical and Joule-heating *** effects of glutaraldehyde added to aerogels as a crosslinking agent on mechanical properties and microstructure were also systematically *** optimized CNFAs combined with low density,high porosity,good elasticity,and superior Joule-heating efficiency along with suitable adsorption capacity,excellent selectivity,and cycling *** material was able to selectively remove 87%and 92%of microscale acetone and dimethylformamide(DMF),respectively,from the water after nine cycles of adsorption and *** present work demonstrates a novel means of designing and fabricating a low shrinkage CNFA with outstanding Joule-heating performance having potential practical applications in the remediation of organic pollution.

关键词： Electrospinning Carbon nanofiber aerogel Volume shrinkage Joule-heating Chemical oxygen demand