检索结果-内蒙古大学图书馆

4th International Conference on Defence technology, ICDT 2024

作者： Zheng, Juhong Yu, Rui Wang, Yajun Zhao, Junmin School of Astronautics Northwestern Polytechnical University Xi’an China Ordnance Science Institute of China Beijing China National Key Laboratory of Land and Air Based Information Perception and Control Xi’an Modern Control Technology Research Institute Xi’an China

More innovative and high technologies are being emerging endlessly, and more requirements for comprehensive damage effect have been further proposed. As a results, the single usage method and damage effect can no longer fully fit the future trends. In this paper, the formation characteristics of EFP and the scattering characteristics of prefabricated fragments was studied on the basis of the structure with composite damage elements, such as prefabricated fragments and explosively formed penetrator (EFP). The results show that the composite damage elements can form high-velocity projectiles with an initial velocity of 2230 m/s in the axial direction and a tungsten ball array with the scattering velocity in the range of 750 to 840 m/s. Moreover, if prefabricated fragment structures are removed, the change of EFP formation characteristics is not obvious. However, shaped-charge structure play an evident influence in the scattering velocity of fragments. Compared to the structure with single damage elements, the average velocities of fragments of composite structure are higher and its scattering angles are more widely, maximum scattering angle increasing from 16° to 20.1°. © 2024 Institute of Physics Publishing. All rights reserved.

关键词： Shaped charges

来源：评论

学校读者我要写书评

暂无评论

Forming Circle Formations of Multi-agent Systems Under Actuator Faults 5th

Forming Circle Formations of Multi-agent Systems Under Actu...

引用

5th Chinese Conference on Swarm Intelligence and Cooperative control, CCSICC 2021

作者： Liu, Jiajun Ru, Xinfeng Xia, Weiguo Wang, Chen China National Aeronautical Radio Electronic Research Institute and National Key Laboratory of Science and Technology on Avionics System Integration Shanghai China Key Laboratory of Intelligent Control and Optimization for Industrial Equipment of Ministry of Education and School of Control Science and Engineering Dalian University of Technology Dalian China National Engineering Research Center of Software Engineering and the State Key Laboratory of Turbulence and Complex Systems Intelligent Biomimetic Design Lab College of Engineering Peking University Beijing China

ISBN: (纸本)9789811939976

A distributed fault-tolerant formation control law is designed in this paper for multi-agent systems under external disturbances and actuator faults including time-varying loss of effectiveness faults. The initial position of each agent is already on a circle and the control purpose is to form a desired formation on this circle. Based on this local information, a distributed adaptive formation control law is designed by employing the congelation of variables method to deal with time-varying actuator faults. Finally, a simulation example is given to verify the effectiveness of the adaptive fault-tolerant control design method. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Multi agent systems

来源：评论

学校读者我要写书评

暂无评论

A rabies virus-based toolkit for efficient retrograde labeling and monosynaptic tracing

引用

Neural Regeneration Research 2023年第8期18卷 1827-1833页

作者： Kun-Zhang Lin Lei Li Wen-Yu Ma Xin Yang Zeng-Peng Han Neng-Song Luo Jie Wang Fu-Qiang Xu The Brain Cognition and Brain Disease Institute(BCBDI) Shenzhen Key Laboratory of Viral Vectors for BiomedicineShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen-Hong Kong Institute of Brain Science-Shenzhen Fundamental Research InstitutionsNMPA Key Laboratory for Research and Evaluation of Viral Vector Technology in Cell and Gene Therapy Medicinal ProductsShenzhenKey Laboratory of Quality Control Technology for Virus-Based TherapeuticsGuangdong Provincial Medical Products AdministrationShenzhenGuangdong ProvinceChina State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics National Center for Magnetic Resonance in WuhanWuhan Institute of Physics and MathematicsInnovation Academy for Precision Measurement Science and TechnologyChinese Academy of Sciences-Wuhan National Laboratory for OptoelectronicsWuhanHubei ProvinceChina University of Chinese Academy of Sciences BeijingChina Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhanHubei ProvinceChina Shenzhen-Hong Kong Institute of Brain Science-Shenzhen Fundamental Research Institutions ShenzhenGuangdong ProvinceChina Center for Excellence in Brain Science and Intelligence Technology Chinese Academy of SciencesShanghaiChina

Analyzing the structure and function of the brain's neural network is critical for identifying the working principles of the brain and the mechanisms of brain *** rabies viral vectors allow for the retrograde labeling of projection neurons and cell type-specific trans-monosynaptic tracing,making these vectors powerful candidates for the dissection of synaptic *** several attenuated rabies viral vectors have been developed,their application in studies of functional networks is hindered by the long preparation cycle and low yield of these *** overcome these limitations,we developed an improved production system for the rapid rescue and preparation of a high-titer CVS-N2c-ΔG *** results showed that the new CVS-N2c-ΔG-based toolkit performed remarkably:(1)N2cG-coated CVS-N2c-ΔG allowed for efficient retrograde access to projection neurons that were unaddressed by rAAV9-Retro,and the efficiency was six times higher than that of rAAV9-Retro;(2)the trans-monosynaptic efficiency of oG-mediated CVS-N2c-ΔG was 2–3 times higher than that of oG-mediated SAD-B19-ΔG;(3)CVS-N2c-ΔG could delivery modified genes for neural activity monitoring,and the time window during which this was maintained was 3 weeks;and(4)CVS-N2c-ΔG could express sufficient recombinases for efficient transgene *** findings demonstrate that new CVS-N2c-ΔG-based toolkit may serve as a versatile tool for structural and functional studies of neural circuits.

关键词： functional studies neural activity neural circuits projection neurons rAAV9-Retro rabies virus recombination retrograde labeling synaptic inputs trans-monosynaptic tracing

来源：评论

学校读者我要写书评

暂无评论

Investigation into enhanced performance of toluene and Hg^(0) stimulative abatement over Cr-Mn oxides co-modified columnar activated coke

引用

Journal of Environmental sciences 2025年第2期148卷 88-106页

作者： Jiajie Wang Jie Liu Lei Gao Dong Xie Caiting Li Liping Xiang Huiyu Xiong Jiaqi Xie Tianren Zhang Yueguo Pan School of Resources Environment and Safety Engineering University of South ChinaHengyang 421001China National&Local Joint Engineering Research Center for Airborne Pollutants Control and Radioactivity Protection in Buildings Hengyang 421001China Key Laboratory of Prefabricated Building Energy Saving Technology of Hunan Province Hengyang 421001China College of Environmental Science and Engineering Hunan UniversityChangsha 410082China

In this study,a string of Cr-Mnco-modified activated coke catalysts(XCryMn1-y/AC)were prepared to investigate toluene and Hg^(0) removal *** characterizations including XRD,TEM,SEM,in situ DRIFTS,BET,XPS and H_(2)-TPR showed that 4%Cr0.5Mn0.5/AC had excellent physicochemical properties and exhibited the best toluene and Hg^(0) removal efficiency at 200℃.By varying the experimental gas components and conditions,it was found that too large weight hourly space velocity would reduce the removal efficiency of toluene and Hg^(0).Although O_(2) promoted the abatement of toluene and Hg^(0),the inhibitory role of H_(2)O and SO_(2) offset the promoting effect of O_(2) to some *** significantly inhibited Hg^(0) removal,resulting from that toluene was present at concentrations orders of magnitude greater than mercury’s or the catalyst was more prone to adsorb toluene,while Hg^(0) almost exerted non-existent influence on toluene *** mechanistic analysis showed that the forms of toluene and Hg^(0) removal included both adsorption and oxidation,where the high-valent metal cations and oxygen vacancy clusters promoted the redox cycle of Cr^(3+)+Mn^(3+)/Mn^(4+)+Cr^(6+)+Mn^(2+),which facilitated the conversion and replenishment of reactive oxygen species in the oxidation process,and even the CrMn_(1.5)O_(4) spinel structure could provide a larger catalytic interface,thus enhancing the adsorption/oxidation of toluene and Hg^(0).Therefore,its excellent physicochemical properties make it a costeffective potential industrial catalyst with outstanding synergistic toluene and Hg^(0) removal performance and preeminent resistance to H_(2)O and SO_(2).

关键词： Toluene Element mercury Cr-Mn oxides Activated coke

来源：评论

学校读者我要写书评

暂无评论

Resource utilization of typical biomass wastes as biochars in removing plasticizer diethyl phthalate from water: characterization and adsorption mechanisms

引用

Frontiers of Environmental science & Engineering 2023年第1期17卷 49-61页

作者： Mei Shi Xiao Wang Mengying Shao Lun Lu Habib Ullah Hao Zheng Fengmin Li Institute of Coastal Environmental Pollution Control College of Environmental Science and EngineeringKey Laboratory of Marine Environment and Ecology(Ministry of Education)Ocean University of ChinaQingdao 266100China State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment South China Institute of Environmental SciencesMinistry of Ecology and EnvironmentGuangzhou 510655China Department of Environmental Science Zhejiang UniversityHangzhou 310058China Marine Ecology and Environmental Science Laboratory Pilot National Laboratory for Marine Science and TechnologyQingdao 266071China Sanya Oceanographic Institution Ocean University of ChinaSanya 572000China

Plastic pollution as a global environmental issue has become a research hotspot,among which the removal of inherent plasticizer(e.g.,phthalic acid esters,PAEs)received increasing ***,the effects of biochars derived from different feedstocks on the adsorption of PAEs are poorly ***,the characteristics of biochars derived from six largely produced biomass wastes in China at 400°C,as well as their performance in adsorption of diethyl phthalate(DEP),one of frequently detected PAEs in aqueous environment,were *** results indicated that the variation in feedstock type showed significant changes in the properties(e.g.,porosity,specific surface area,surface functional groups)of biochars,which affected DEP adsorption and *** order and Freundlich models fitted the adsorption data well,and adsorption mechanisms mainly included hydrophobic effect,followed by micropore filling,hydrogen bonding,andπ-πEDA *** thermodynamics revealed that the adsorption was a spontaneous and exothermic the adsorption capacities of DEP on these biochars slightly decreased with the increasing pH but increased with the increasing ionic *** these biochars,the giant reed biochar with relatively higher DEP adsorption and low desorption exhibited the great efficiency for DEP removal as an environment-friendly *** results highlighted the significant roles of micropore filling and hydrogen bond in determining adsorption capacity of designed biochars prepared from selecting suitable agricultural straws and wetland plant waste to typical *** findings are useful for producing designed biochars from different biomass wastes for plasticizer pollution control.

关键词： Plastic pollution Phthalic acid esters Designed biochar Wetland plant Adsorption

来源：评论

学校读者我要写书评

暂无评论

Broadband on-chip light-matter interface in telecom band

Broadband on-chip light-matter interface in telecom band

引用

2024 Conference on Lasers and Electro-Optics/Pacific Rim, CLEO-PR 2024

作者： Zhou, Qiang Zhang, Xueying Zhang, Bin Li, Hao You, Lixing Chen, Feng Guo, Guangcan Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of China Chengdu610054 China Research Center for Quantum Internet Tianfu Jiangxi Laboratory Chengdu641419 China Key Laboratory of Quantum Physics and Photonic Quantum Information Ministry of Education University of Electronic Science and Technology of China Chengdu610054 China School of Physics State Key Laboratory of Crystal Materials Shandong University Jinan250100 China National Key Laboratory of Materials for Integrated Circuits Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Shanghai200050 China CAS Key Laboratory of Quantum Information University of Science and Technology of China Hefei230026 China

A spectrally multiplexed light-matter interface at telecom band is demonstrated with a laser-written Er3+:LiNbO3 waveguide. The total bandwidth of the interface is 20 GHz. The preservation of entanglement is demonstra... 详细信息

关键词： Light sensitive materials

来源：评论

学校读者我要写书评

暂无评论

Multi-objective Operation Path Planning Method for Robotic Arm Based on Configuration Space 5

Multi-objective Operation Path Planning Method for Robotic A...

引用

5th International Symposium on Robotics and Intelligent Manufacturing technology, ISRIMT 2023

作者： Zou, Jinbao Liu, Chuankai Chen, Li Zhang, Jitao School of Mechanical Engineering and Automation Fuzhou University Fuzhou Fujian350108 China Beijing Aerospace Control Center Key Laboratory of National Defense Science and Technology for Aerospace Flight Dynamics Technology Beijing China

ISBN: (纸本)9798350316087

For the robotic arm to perform multi-task operations, the robotic arm operation requirements under the conditions of random multi-target operation points, safe obstacle avoidance, and reducing the rotation of joints as much as possible to reduce the wear and tear of robotic arm joints are considered, and the continuous path planning method for multi-target operations based on the configuration space is proposed. Firstly, by constructing the configuration space of robotic arm joints and dividing it into obstacle and free regions, searching continuous paths in the free region;on this basis, based on the TSP idea, using the minimum movement of robotic arm configuration in the free region as the transfer cost, the sequence planning method combining A ∗ algorithm and improved ant colony algorithm is used to solve the minimum value of the transfer cost and obtain the optimal operation sequence and robotic arm operation configuration, so as to obtain the continuous path with the least rotation of robotic arm to multiple target operation joints. © 2023 IEEE.

关键词： Motion planning

来源：评论

学校读者我要写书评

暂无评论

Insight into leaching rare earth from ion-adsorption type rare earth ores with citric acid:Performance,kinetic analysis and differentiation leaching

引用

Journal of Rare Earths 2025年第3期43卷 591-602,I0007页

作者： Mengfei Zhao Zedong Teng Xingyu Ma Xiaoliang Jiang Hualin Zhang Youming Yang Tinggang Li Faculty of Materials Metallurgy and Chemistry Jiangxi University of Science and TechnologyGanzhou341000China Key Laboratory of Rare Earths Jiangxi Institute of Rare EarthsGanjiang Innovation AcademyChinese Academy of SciencesGanzhou341119China CAS Key Laboratory of Green Process and Engineering Innovation Academy for Green ManufactureNational Engineering Research Center of Green Recycling for Strategic Metal ResourcesBeijing Engineering Research Centre of Process Pollution ControlInstitute of Process EngineeringChinese Academy ofSciencesBeijing100190China State Key Laboratory of Biochemical Engineering Key Laboratory of Biopharmaceutical Preparation and DeliveryChinese Academy of SciencesBeijing100190China University of Chinese Academy of Sciences Beijing100049China

The rare earth elements(REEs)extraction by chemical leaching from ion-adsorption type rare earth ores(IAREO)has led to serious ecological and environmental ***,demand for bioleaching is on the rise with the advantage of being *** one of the organic acids produced by biological metabolism,citric acid was used to leach REEs and explore the performance and *** results demonstrate that citric acid exhibits higher leaching efficiency(96.00%)for REEs at a relatively low concentration of 0.01 mol/L compared with(NH_(4))_(2)SO_(4)(84.29%,0.1 mol/L)and MgSO_(4)(83.99%,0.1 mol/L).Citric acid shows a preference for leaching heavy rare earth elements,with 99%leaching efficiency in IAREO,which shows higher capacity than(NH_(4))_(2)SO_(4)and MgSO_(4)(as inorganic leaching agents).Kinetic analysis indicates that the leaching process of REEs with citric acid is controlled by both the internal diffusion kinetics and chemical reaction kinetics,which is different from inorganic leaching *** Minteq calculations confirm that RE-Citrate is the main constituent of the extract solution in the leaching process of the IAREO,thereby enhancing the leaching efficiency of REEs from the *** suggests that citric acid may be used as a promising organic leaching agent for the environmentalfriendly extraction of REEs from IAREO.

关键词： Ion-adsorption type rare earth ores Rare earths Citric acid Complexation Organic acid Differential leaching

来源：评论

学校读者我要写书评

暂无评论

The effect of thermal treatment on the transformation and transportation of arsenic and cadmium in soil

引用

Journal of Environmental sciences 2024年第11期145卷 205-215页

作者： Fengping Zhou Meina Guo Nan Zhao Qianting Xu Tuokun Zhao Weihua Zhang Rongliang Qiu Guangdong Provincial Key Laboratory of Environmental Pollution and Remediation Technology Guangdong Provincial Engineering Research Center for Heavy Metal Contaminated Soil RemediationSchool of Environmental Science and EngineeringSun Yat-sen UniversityGuangzhou 510275China Shenzhen Research Institute Sun Yat-sen UniversityShenzhen 518057China National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and ManagementInstitute of Eco-environmental and Soil SciencesGuangdong Academy of SciencesGuangzhou 510650China Guangdong Provincial Key Laboratory of Agricultural&Rural Pollution Abatement and Environmental Safety School of Natural Resources and EnvironmentSouth China Agricultural UniversityGuangzhou 510642China Ganjiang Innovation Academy Chinese Academy of SciencesGanzhou 341000China

Thermal treatment can effectively decontaminate soils but alter their *** research mainly focused on volatile organic compounds andmetals,***,neglecting nonvolatile metal(loid)*** study aimed to investigate Cd and As transformation during aerobic and anaerobic *** results showed that both aerobic and anaerobic calcination increased soil pH by reducing soil organic matter(SOM)content,which also influenced the cation exchange capacity(CEC)and the leaching behavior of Cd and As in the *** total concentrations of Cd and As in the calcined soils varied depending on the calcination temperature and *** the aerobic calcination temperature exceeded 700℃,Cd volatilized as CdCl_(2),while anaerobic calcination at relatively low temperatures(600℃)involved reductive reactions,resulting in the formation of metallic Cd with a lower boiling ***,As volatilized at 800℃aerobically and 600℃*** formation of As-based minerals,particularly Ca3(AsO4)2,hindered its gasification,whereas anaerobic calcination promoted volatilization efficiency through the generation of C-As(III)based gaseous components with lower boiling *** trends were observed in the TCLP-extractable Cd and As contents of the calcined *** 70%of TCLP-extractable Cd contents were suppressed after thermal treatment,attributed to the elevated pH and reduced CEC of the soil,as well as ***,TCLP-extractable As contents increased with elevated temperatures,likely due to the desorption of AsO43−and re-adsorption of gaseous As2O3 during *** findings have implications for assessing the environmental impact of thermal treatment and provide insights for remediation strategies concerning Cd and As-contaminated soils.

关键词： Thermal treatment Soil Cadmium Arsenic Transformation

来源：评论

学校读者我要写书评

暂无评论

Achieving highly-efficient H2S gas sensor by flower-like SnO_(2)–SnO/porous GaN heterojunction

引用

Chinese Physics B 2023年第2期32卷 193-200页

作者：刘增都灵张少辉边昂方君鹏邢晨阳李山汤谨诚郭宇锋唐为华 College of Integrated Circuit Science and Engineering Nanjing University of Posts and TelecommunicationsNanjing 210023China National and Local Joint Engineering Laboratory for RF Integration and Micro-Packing Technologies Nanjing University of Posts and TelecommunicationsNanjing 210023China School of Electronic and Information Engineering Jinling Institute of TechnologyNanjing 211169China Institute of Microscale Optoelectronics Shenzhen UniversityShenzhen 518060China Key Laboratory of Luminescence and Optical Information of Ministry of Education Institute of Optoelectronic TechnologyBeijing Jiaotong UniversityBeijing 100044China School of Integrated Circuits Tsinghua UniversityBeijing 100044China Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education College of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen 518060China State Key Laboratory of Information Photonics and Optical Communications School of ScienceBeijing University of Posts and TelecommunicationsBeijing 100876China

A flower-like SnO_(2)–SnO/porous Ga N(FSS/PGaN) heterojunction was fabricated for the first time via a facile spraying process, and the whole process also involved hydrothermal preparation of FSS and electrochemical wet etching of GaN,and SnO_(2)–SnO composites with p–n junctions were loaded onto PGaN surface directly applied to H_(2)S sensor. Meanwhile,the excellent transport capability of heterojunction between FSS and PGaN facilitates electron transfer, that is, a response time as short as 65 s and a release time up to 27 s can be achieved merely at 150℃ under 50 ppm H_(2)S concentration, which has laid a reasonable theoretical and experimental foundation for the subsequent PGaN-based heterojunction gas *** lowering working temperature and high sensitivity(23.5 at 200 ppm H2S) are attributed to the structure of PGaN itself and the heterojunction between SnO_(2)–SnO and PGaN. In addition, the as-obtained sensor showed ultra-high test *** simple design strategy of FSS/PGaN-based H_(2)S sensor highlights its potential in various applications.

关键词： gas sensor SnO_(2)–SnO porous GaN heterojunction

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：