检索结果-南通市图书馆

Humanoid robot heads for human-robot interaction:A review

在线全文

学校读者我要写书评

暂无评论

Science China(Technological Sciences) 2024年第2期67卷 357-379页

作者： LI Yi ZHU LiXiang ZHANG ZiQian GUO MingFei LI ZhiXin LI YanBiao HASHIMOTO Minoru key laboratory of Special Purpose Equipment and advanced Processing technology of Ministry of Education Zhejiang University of TechnologyHangzhou 310023China Zhejiang Provincial key laboratoryof Special Purpose Equipment and advanced Processing technology Zhejang Universityof technology Hangzhou 310023 China Faculy of textile Science and technology Shinshu UniversityUeda 386-8567Japan

The humanoid robot head plays an important role in the emotional expression of human-robot interaction(HRI).They are emerging in industrial manufacturing,business reception,entertainment,teaching assistance,and tour *** recent years,significant progress has been made in the field of humanoid ***,there is still a lack of humanoid robots that can interact with humans naturally and *** review comprises a comprehensive survey of state-of-the-art technologies for humanoid robot heads over the last three decades,which covers the aspects of mechanical structures,actuators and sensors,anthropomorphic behavior control,emotional expression,and human-robot ***,the current challenges and possible future directions are discussed.

关键词： humanoid robot head anthropomorphic behaviors emotional expression human-robot interaction

Biomimetic leaf structures for ultra-thin electromagnetic wave absorption

在线全文

学校读者我要写书评

暂无评论

Nano Research 2024年第5期17卷 4507-4516页

作者： Shikun Hou Ying Wang Feng Gao Fei Jin Benfeng Zhu Qiong Wu Hongliang Ge Zhihai Cao Hua Yang Magnetism key laboratory of Zhejiang Province&College of Optical and Electronic technology China Jiliang UniversityHangzhou 310018China Department of Materials Science and Engineering Guangdong Technion-Israel Institute of TechnologyShantou 515063China key laboratory of advanced textile Materials and manufacturing technology and Engineering Research Center for Eco-Dyeing&Finishing of textiles Ministry of EducationZhejiang Sci-Tech UniversityHangzhou 310018China

Ultra-thin electromagnetic wave(EMW)absorbers present challenging demands on EMW absorption *** inspiration from heather leaf structures,this study introduces an innovative design strategy for EMW absorbing material,proposing biomimetic leaf SnO_(2) structures(bio-SnO_(2))on carbon fabric(CF).By employing leaf-shaped SnS2 as precursors,biomimetic leaf SnO_(2) nanostructures are constructed on CF surface after a simple thermal treatment,resulting in bio-SnO_(2)@CF *** results indicate that bio-SnO_(2)@CF exhibits an exceptional minimum reflection loss of-54.8 dB at an incredibly thin thickness of 1.2 *** cross section(RCS)simulations further validate the outstanding EMW attenuation ability of bio-SnO_(2)@CF,attaining a maximum RCS reduction value of 16.9 dBm^(2) at an incident wave angle ofθ=0°.This novel research showcases the biomimetic structural design strategy and its remarkable function in enhancing the EMW absorbing performance at ultra-thin absorber thickness.

关键词： biomimetic leaf structures electromagnetic wave absorption ultra-thin thickness

Ultra-high specific surface area activated carbon from Taihu cyanobacteria via KOH activation for enhanced methylene blue adsorption

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 Journal of Chemical Engineering 2024年第3期67卷 106-116页

作者： Yifang Mi Wenqiang Wang Sen Zhang Yalong Guo Yufeng Zhao Guojin Sun Zhihai Cao key laboratory of advanced textile Materials and manufacturing technology and Engineering Research Center for Eco-Dyeing&Finishing of textiles Ministry of EducationZhejiang Provincial Engineering Research Center for Green and Low-carbon Dyeing&FinishingZhejiang Sci-Tech UniversityHangzhou 310018China key laboratory for technology in Rural Water Management of Zhejiang Province Zhejiang University of Water Resources and Electric PowerHangzhou 310018China

Cyanobacteria-based activated carbon(CBAC)was successfully prepared by pyrolysis-activation of Taihu *** the impregnation ratio and activated temperature were 2 and 800-C,respectively,the optimal CBACs possessed an ultra-high specific surface(2178.90 m^(2)·g^(-1))and plenty of micro-and meso-pores,as well as a high pore volume(1.01 cm^(3)·g^(-1)).Ascribed to ultra-high surface area,π-π interaction,electrostatic interaction,as well as hydrogen-bonding interactions,the CBACs displayed huge superiority in efficient dye *** saturated methylene blue adsorption capacity by CBACs could be as high as 1143.4 mg·g^(-1),superior to that of other reported biomass-activated *** adsorption was endothermic and modeled well by the pseudo-second-order kinetic,intra-particle diffusion,and Langmuir *** work presented the effectiveness of Taihu cyanobacteria adsorbent ascribed to its super large specific surface area and high adsorption ability.

关键词： Activated carbon Biomass Dye adsorption Taihu cyanobacteria

Heterogeneous Cu_(x)O Nano‑Skeletons from Waste Electronics for Enhanced Glucose Detection

在线全文

学校读者我要写书评

暂无评论

Nano-Micro Letters 2024年第11期16卷 554-568页

作者： Yexin Pan Ruohan Yu Yalong Jiang Haosong Zhong Qiaoyaxiao Yuan Connie Kong Wai Lee Rongliang Yang Siyu Chen Yi Chen Wing Yan Poon Mitch Guijun Li Center on Smart manufacturing Division of Integrative Systems and DesignThe Hong Kong University of Science and TechnologyClear Water BayKowloonHong Kong SAR 999077People’s Republic of China The Sanya Science and Education Innovation Park of Wuhan University of technology Sanya 572000People’s Republic of China State key laboratory of New textile Materials and advanced Processing Technologies Wuhan Textile UniversityWuhan 430200People’s Republic of China

Electronic waste(e-waste)and diabetes are global challenges to modern ***,solving these two challenges together has been challenging until ***,we propose a laser-induced transfer method to fabricate portable glucose sensors by recycling copper from *** bring up a laser-induced full-automatic fabrication method for synthesizing continuous heterogeneous Cu_(x)O(h-Cu_(x)O)nano-skeletons electrode for glucose sensing,offering rapid(<1 min),clean,air-compatible,and continuous fabrication,applicable to a wide range of Cu-containing *** this approach,h-Cu_(x)O nanoskeletons,with an inner core predominantly composed of Cu_(2)O with lower oxygen content,juxtaposed with an outer layer rich in amorphous Cu_(x)O(a-Cu_(x)O)with higher oxygen content,are derived from discarded printed circuit *** employed in glucose detection,the h-Cu_(x)O nano-skeletons undergo a structural evolution process,transitioning into rigid Cu_(2)O@CuO nano-skeletons prompted by electrochemical *** transformation yields exceptional glucose-sensing performance(sensitivity:9.893 mA mM^(-1) cm^(-2);detection limit:0.34μM),outperforming most previously reported glucose *** functional theory analysis elucidates that the heterogeneous structure facilitates gluconolactone *** glucose detection device has also been downsized to optimize its scalability and portability for convenient integration into people’s everyday lives.

关键词： Copper oxide Electron 3D tomography E-waste Glucose detection Electrochemical activation

Dynamic motion of quadrupedal robots on challenging terrain:a kinodynamic optimization approach

在线全文

学校读者我要写书评

暂无评论

Frontiers of Mechanical Engineering 2024年第3期19卷 23-40页

作者： Qi LI Lei DING Xin LUO Engineering Research Center of Hubei Province for Clothing Information Wuhan 430200China School of Computer Science and Artificial Intelligence Wuhan Textile UniversityWuhan 430200China State key laboratory of Digital manufacturing Equipment and technology Huazhong University of Science and TechnologyWuhan 430074China

The dynamic motion of quadrupedal robots on challenging terrain generally requires elaborate spatial–temporal kinodynamic motion planning and accurate control at higher refresh rate in comparison with regular ***,conventional quadrupedal robots usually generate relatively coarse planning and employ motion replanning or reactive strategies to handle terrain *** resultant complex and computation-intensive controller may lead to nonoptimal motions or the breaking of locomotion *** this paper,a kinodynamic optimization approach is *** generate long-horizon optimal predictions of the kinematic and dynamic behavior of the quadruped robot on challenging terrain,we formulate motion planning as an optimization problem;jointly treat the foot’s locations,contact forces,and torso motions as decision variables;combine smooth motion and minimal energy consumption as the objective function;and explicitly represent feasible foothold region and friction constraints based on terrain *** track the generated motions accurately and stably,we employ a whole-body controller to compute reference position and velocity commands,which are fed forward to joint controllers of the robot’s *** verify the effectiveness of the developed approach through simulation and on a physical quadruped robot *** show that the quadruped robot can successfully traverse a 30°slope and 43% of nominal leg length high step while maintaining the rhythm of dynamic trot gait.

关键词： quadrupedal robot kinodynamic planning nonlinear optimization challenging terrain whole-body control

advanced preparation and application of bimetallic materials in lithium-sulfur batteries:A review

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

Journal of Energy Chemistry 2024年第1期88卷 469-512,I0011页

作者： Yongbing Jin Nanping Deng Yanan Li Hao Wang Meiling Zhang Weimin Kang Bowen Cheng State key laboratory of Separation Membranes and Membrane Processes/National Center for International Joint Research on Separation Membranes School of Textile Science and EngineeringTiangong UniversityTianjin 300387China

Lithium-sulfur(Li-S)batteries are considered highly promising as next-generation energy storage systems due to high theoretical capacity(2600 Wh kg^(-1))and energy density(1675 mA h g^(-1))as well as the abundant natural reserves,low cost of elemental sulfur,and environmentally friendly ***,several challenges impede its commercialization including low conductivity of sulfur itself,the severe“shuttle effect”caused by lithium polysulfides(LiPSs)during charge–discharge processes,volume expansion effects and sluggish reaction *** a solution,polar metal particles and their compounds have been introduced as the main hosts for sulfur cathode due to their robust catalytic activity and adsorption capability,effectively suppressing the“shuttle effect”of Li *** alloys and their compounds with multi-functional properties exhibit remarkable electrochemical performance more readily when compared to single-metal ***-designed bimetallic materials demonstrate larger specific surface areas and richer active sites,enabling simultaneous high adsorption capability and strong catalytic *** synergistic effect of the“adsorption-catalysis”sites accelerates the adsorptiondiffusion-conversion process of Li PSs,ultimately achieving a long-lasting Li-S ***,the latest progress and performance of bimetallic materials in cathodes,separators,and interlayers of Li-S batteries are systematically ***,the principles and challenges of Li-S batteries are briefly ***,various mechanisms for suppressing“shuttle effects”of Li PSs are emphasized at the ***,the performance parameters of various bimetallic materials are comprehensively summarized,and some improvement strategies are proposed based on these ***,the future prospects of bimetallic materials are discussed,with the hope of providing profound insights for the rational design and manufacturing of high-performance bimetallic materia

关键词： Bimetallic materials Lithium-sulfur batteries Effectively suppress shuttle effect of LiPSs Significantly improve reaction kinetics Exceptionally long lifespan

Occurrence, Spatial Distribution, Sources and Risk Assessment of Per-and Polyfluoroalkyl Substances in Surface Sediments of the Yellow River Delta Wetland

在线全文

学校读者我要写书评

暂无评论

Journal of Ocean University of China 2024年第5期23卷 1263-1274页

作者： SUN Yu SHEN Nan ZHANG Dahai CHEN Junhui HE Xiuping JI Yinli WANG Haiyang LI Xianguo key laboratory of Marine Chemistry Theory and technology (Ocean University of China) Ministry of Education key laboratory of Marine Eco-Environmental Science and technology First Institute of Oceanography Ministry of Natural Resources Qingdao key laboratory of Analytical technology Development and Offshore Eco-Environment Conservation The Yellow River Delta Sustainable Development Institute of Shandong Province

Per-and polyfluoroalkyl substances（PFASs） are emerging persistent organic pollutants（POPs）. In this study, 47 surface sediment samples were collected from the Yellow River Delta wetland（YRDW） to investigate the occurrence, spatial distribution, potential sources, and ecological risks of PFASs. Twenty-three out of 26 targeted PFASs were detected in surface sediment samples from the YRDW, with total ∑23PFASs concentrations ranging from 0.23 to 16.30 ng g-1dw and a median value of 2.27 ng g-1dw. Perfluorooctanoic acid（PFOA）, perfluorobutanoic acid（PFBA） and perfluorooctanesulfonic acid（PFOS） were the main contaminants. The detection frequency and concentration of perfluoroalkyl carboxylic acids（PFCAs） were higher than those of perfluoroalkanesulfonic acids（PFSAs）, while those of long-chain PFASs were higher than those of short-chain PFASs. The emerging PFASs substitutes were dominated by 6:2 chlorinated polyfluoroalkyl ether sulfonic acid（6:2 Cl-PFESA）. The distribution of PFASs is significantly influenced by the total organic carbon content in the sediments. The concentration of PFASs seems to be related to human activities, with high concentration levels of PFASs near locations such as beaches and villages. By using a positive matrix factorization model, the potential sources of PFASs in the region were identified as metal plating mist inhibitor and fluoropolymer manufacturing sources, metal plating industry and firefighting foam and textile treatment sources, and food packaging material sources. The risk assessment indicated that PFASs in YRDW sediments do not pose a significant ecological risk to benthic organisms in the region overall, but PFOA and PFOS exert a low to moderate risk at individual stations.

关键词： per- and polyfluoroalkyl substances risk assessment sediment source identification Yellow River Delta wetland

Effect of Strain Rate on Compression Behavior of Vinyl Ester Resin Casting

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

材料工程 2006年第5期34卷 63-67,72页

作者： XIONG Tao YANG Bin XIONG Jie XU Xian-jian ZHOU Kai MAO Ming-zhong key laboratory of advanced textile materialsand manufacturing technology Ministry of EducationZhejiang Sci-Tech University Hangzhou 310018 China

Quasi-static and high strain rate compressive experiments on vinyl ester casting were carried out by means of MTS (Material Test System) and Hopkinson bar. The behaviors of the compressed unstable and fracture of the resin casting at different strain rates were *** results indicate that the response behavior of the resin casting is controlled by different mechanisms at different strain rate, and some mechanical properties of vinyl ester casting are rate-dependent: the casting are destroyed in toughness model under strain rate 3.3×10 -4～6.6×10 -3/s, while the casting are destroyed in brittleness model under strain rate 950～5800/s. The yield stress, yield strain energy density are all increased with the increasing strain rates at quasi-static as well as at high strain rates. What is interesting is that the yield strain decreased with the strain rates increasing at quasi-static while increased at high strain rates. It is considered that the casting occurred forcing high elastic deformation at high strain rates. The damage of the specimens is mainly controlled by axial stress before unstable deformation, while mainly controlled by shear stress after unstable deformation, and then developed to fracture finally. This progress is rate-dependent: the development of the cracks inside the castings increased with the strain rate increasing.

关键词： vinyl ester resin quasi-static high strain rate strain rate response and crack development

Statistical Tensile Strength for High Strain Rate of Aramid and UHMWPE Fibers

在线全文

学校读者我要写书评

暂无评论

材料工程 2006年第5期34卷 46-50页

作者： YANG Bin XIONG Tao XIONG Jie key laboratory of advanced textile materialsand manufacturing technology Ministry of EducationZhejiang Sci-Tech University Hangzhou 310018 China

Dynamic tensile impact properties of aramid (Technora) and UHMWPE (DC851) fiber bundles were studied at two high strain rates by means of reflecting type Split Hopkinson Bar, and stress-strain curves of fiber yarns at different strain rates were obtained. Experimental results show that the initial elastic modulus, failure strength and unstable strain of aramid fiber yarns are strain rate insensitive, whereas the initial elastic modulus and unstable strain of UHMWPE fiber yarns are strain rate sensitive. A fiber-bundle statistical constitutive equation was used to describe the tensile behavior of aramid and UHMWPE fiber bundles at high strain rates. The good consistency between the simulated results and experimental data indicates that the modified double Weibull function can represent the tensile strength distribution of aramid and UHMWPE fibers and the method of extracting Weibull parameters from fiber bundles stress-strain data is valid.

关键词： aramid fiber UHMWPE fiber impact behaviour statistical properties statistical constitutive equation