检索结果-南通市图书馆

Pneumatic and tendon actuation coupled muti-mode actuators for soft robots with broad force and speed range

Science China(Technological Sciences) 2022年第9期65卷 2156-2169页

作者： ZHU JiaQi PU MengHao CHEN Han XU yi DIng Han WU zhigang State Key Laboratory of Digital Manufacturing Equipment and Technology Huazhong University of Science and TechnologyWuhan 430074China

Broad output force and speed ranges are highly desired for actuators to endow soft robots with high performance,thereby increasing the range of tasks they can ***,limited by their low structural stiffness and single actuation method,most of the existed soft actuators are still difficult to achieve a broad force and speed range with a relatively compact body ***,we propose a pneumatic and tendon actuation coupled soft actuator(PTCSA)with multiple actuation modes,mainly composing of a multi-joint thermoplastic polyurethanes(TPU)-made skeleton sealed in a film *** TPU skeleton with certain structural stiffness combined with soft joints allows PTCSA to output small force and respond rapidly under pneumatic actuation,as well as output high force and flexibly regulate response speed under tendon actuation,therefore achieving a broad force and speed range with a compact *** multiple modes constructed from the two actuation methods with different force and speed properties can cover diverse application *** demonstrate its performance,PTCSA is further used to construct a soft robotic arm(with a maximum lifting speed of 198°/s and can easily lift a load of 200 g),an inchworm-inspired wheel-footed soft robot(moves at a high speed of 2.13 cm/s when unload or pulls a load of 300 g forward),and a soft gripper(can grasp diverse objects,from 0.1 g potato chips to an 850 g roll of Sn-0.7 Cu wire,from a high-speed moving tennis ball to an upright pen).This work indicates the potential of combining multiple complementary actuation methods to improve the force and speed range of soft actuators,and may provide inspiration for related research.

关键词： soft actuator tendon actuation pneumatic actuation broad force and speed range multiple modes

来源：

维普期刊数据库

同方期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Alternative splicing of inner-ear-expressed genes

引用

Frontiers of Medicine 2016年第3期10卷 250-257页

作者： yanfei Wang yueyue Liu Hongyun Nie Xin Ma zhigang Xu Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology School of Life Sciences Shandong University Jinan 250100 China School of Control Science and Engineering Shandong University Jinan 250061 China

Alternative splicing plays a fundamental role in the development and physiological function of the inner ear. Inner-ear-specific gene splicing is necessary to establish the identity and maintain the function of the inner ear. For example, exon 68 of Cadherin 23 （Cdh23） gene is subject to inner-ear-specific alternative splicing, and as a result, Cdh23（＋ 68） is only expressed in inner ear hair cells. Alternative splicing along the tonotopic axis of the cochlea contributes to frequency tuning, particularly in lower vertebrates, such as chickens and turtles. Differential splicing of Kcnmal, which encodes for the a subunit of the Ca2＋-activated K~ channel （BK channel）, has been suggested to affect the channel gating properties and is important for frequency tuning. Consequently, deficits in alternative splicing have been shown to cause hearing loss, as we can observe in Bronx Waltzer Cov） mice and Sfswap mutant mice. Despite the advances in this field, the regulation of alternative splicing in the inner ear remains elusive. Further investigation is also needed to clarify the mechanism of hearing loss caused by alternative splicing deficits.

关键词： alternative splicing inner ear hearing loss hair cells

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Technical advances in NK cell-based cellular immunotherapy

引用

Cancer Biology & Medicine 2019年第4期16卷 647-654页

作者： Fang Fang Wei Wang Minhua Chen zhigang Tian Weihua Xiao Department of Oncology of The First Affiliated Hospital Division of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefei 230027China Hefei National Laboratory for Physical Sciences at Microscale CAS Key Laboratory of In nate Immunity and Chronic DiseaseSchool of Life Scie ncesUn iversity of Scie nee and Tech no logy of ChinaHefei 230027China institute of Immunology University of Science and Technology of ChinaHefei 230027China Engin eeri ng Tech no logy Research Center of Biotechnology Drugs Anhui University of Science and Tech no logy of ChinaHefei 230027China

Natural killer(NK)cells represent a promising future for tumor immunotherapy because of their unique biological functions and *** review focuses on technical advances in NK cell-based cellular immunotherapy and summarizes the developments of recent years in cell sources,genetic modification,manufacturing systems,clinical programs,and *** prospects and challenges in NK cell immunotherapy are also discussed,including off-the-shelf NK cell exploitation,automatic and closed manufacturing systems,cryopreservation,and therapies involving regulatory checkpoints.

关键词： Natural killer cell immunotherapy adoptive cell transfer genetic modification

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Bird diversity and the conservation value of a new Ramsar site:Guangdong Haifeng Wetlands, China

引用

Integrative Zoology 2011年第3期6卷 266-278页

作者： Junhua HU zhigang JIAng Chunlan ZHAng Feng XIAO Huijian HU Chengdu Institute of Biology Chinese Academy of SciencesChengduChina Institute of Zoology Chinese Academy of SciencesBeijingChina South China Institute of Endangered Animals GuangzhouChina

Wetlands are critical habitats for ***,wetlands are being degraded at an accelerating rate due to global human activity,and a disproportionate fraction of wetland-dependent bird species are in *** evaluated the conservation value of a new Ramsar site,Guangdong Haifeng Wetlands,China,for birds,by comparing bird communities(using line transect data)in 3 different districts:Gongping,Dongguan Lian’anwei and *** recorded 139 species of birds,including 26 species that are protected at a national *** had the highest species richness and diversity,whereas Dongguan Lian’anwei had the highest abundance of birds and the lowest species ***,Gongping had both the lowest species richness and the lowest *** ende-mism of constituent species differed among districts,and the bird communities were *** were significant seasonal differences in the species richness and the number of *** had the highest species richness and *** present study identifies the high conservation value of Haifeng Wetlands for both waterbirds and terrestrial *** findings suggest that conservation efforts in Haifeng Wetlands and other wetlands should focus not only on wintering migratory birds,but also on resident *** accomplish effective conservation,we should consider the reserve and surrounding wetlands as a whole,incorporating ecological research,education and local economic development.

关键词： assemblage conservation Important Birds Area seasonal variation

来源：

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

White Light Emission Characteristics of Tb3+/Sm3+Co-Doped Glass Ceramics Containing yPO4 Nanocrystals

引用

Journal of Materials Science & Technology 2017年第5期33卷 432-437页

作者： Zhixiong Zhang yuepin Zhang Cheng Wang zhigang Feng Weihuan Zhang Haiping Xia Key Laboratory of Photo-electronic Materials Ningbo UniversityNingbo 315211China

The Tb3＋/Sm3＋ single-doped and co-doped glasses and glass ceramics containing yPO4 nanocrystals have been synthesized by melt quenching method. The structural and luminescent properties of these glass specimens were investigated. Under 375 nm wavelength excitation, the emission spectra combined with blue, green and red bands were observed, which achieved the white light emission. Moreover, the energy transfer between Tb3＋ and Sm3＋ ions was validated by decay lifetime measurement and energy level diagram. The color coordinates （x = 0.333, y = 0.333）, correlated color temperature （5595 K） and the color render- ing index （Ra = 80.5） indicated that the glass ceramics were considered to be good lighting source. Hence, the yPO4-based Tb3＋/Sm3＋ co-doped glass ceramics can act as potential matrix materials for white light- emitting diodes under ultraviolet excitation.

关键词： Glass ceramicsyPO4 Tb3+/Sm3+ co-dopedLuminescent propertiesWhite light-emitting diodes

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

H_(∞) control for a networked Markovian jump system subject to data packet loss based on the observer

引用

IET Cyber-Systems and Robotics 2022年第1期4卷 3-14页

作者： yanfeng Wang Xiaoyue Sun Ping He zhigang Wu School of Mechanical and Electrical Engineering Suqian UniversitySuqianChina School of Engineering Huzhou UniversityHuzhouChina College of Engineering Huazhong Agricultural UniversityWuhanChina School of Energy and Mechanical Engineering Jiangxi University of Science and TechnologyNanchangChina

This study researches the H_(∞) control issue for a networked Markovian jump system with data packet loss occurring not only in the channel from sensor to controller but also in the channel from controller to actuator via an *** mathematical model for the closed‐loop networked Markovian jump system with data packet loss is *** necessary and sufficient conditions for the closed‐loop system to be stochastically stable are *** design approach of the controller and the minimal performance index of the external disturbance suppression are also given in the case that the transition possi-bilities of the system modes and the data packet loss are both partially ***,two numerical examples are used to illustrate the effectiveness of the proposed method.

关键词： data packet loss Markovian jump system networked control system observer

来源：

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

Cloud point extraction and flame atomic absorption spectrometry analysis of palladium, platinum, and gold ions from industrial polluted soil

引用

Rare Metals 2012年第5期31卷 512-516页

作者： LIAN yuanpei ZHEN Wei TAI zhigang y.ng yaling SOng Jun LI Zonghao Faculty of Life Science and Technology Kunming University of Science and Technology Kunming 650224 China Kunming Fruit Business and Economics Co. Ltd. Kunming 650106 China

Cloud point extraction (CPE) with Tergitol TMN-6 was applied for the extraction of trace amounts of palladium (Pd(Ⅱ)), platinum (Pt(Ⅳ)), and gold (Au(Ⅲ)) in the soil of industrial sewage. Ammonium pyrolysine dithiocarbamate (APDC) was adopted as the chelating agent prior to CPE and then was detected by atomic absorption spectrometry (AAS). Different parameters such as the concentration of surfactants, chelating agent and salt, sample pH, equilibration temperature and time, centrifugation time and rates, and the effect of foreign ions were studied. Under optimum conditions, the low limits of detections are 1.4, 2.8 and 1.2 ng·ml^-1 and the enrichment factors are 21, 12, and 24 for Pd(Ⅱ), Pt(Ⅳ), and Au(Ⅲ, respectively. The relative standard deviations vary from 0.6% to 1.0% (n=11). All correlation coefficients of the calibration curves are >0.9960. The proposed method was successfully applied for the determination of Pd(Ⅱ), Pt(Ⅳ), and Au(Ⅲ) in the real soil of industrial sewage samples.

关键词： cloud point extraction ammonium pyrolysine dithiocarbamate Tergitol TMN-6 Pd Pt Au atomic absorption spectrometry

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A parametric family of quartic Thue equations

引用

Frontiers of Mathematics in China 2023年第3期18卷 147-163页

作者： zhigang LI Pingzhi yUAN School of Mathematics and Computing Science Hunan University of Science and TechnologyXiangtan 411201China School of Mathematics South China Normal UniversityGuangzhou 510631China

In this paper,we give all primitive solutions of a parameterized family of quartic Thue equations:x^(4)-4cx^(3)y+(6c+2)x^(2)y^(2)+4cxy^(3)+y^(4)=96c+169,c>0.

关键词： Extension of classical Legendre's theorem Baker-Wistholz's theo-rem Thue equation

来源：

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

Regional immunity in tissue homeostasis and diseases

引用

Science China(Life Sciences) 2016年第12期59卷 1205-1209页

作者： zhigang Tian Xuetao Cao y.ngyan Chen Qunyan Lyu Institute of Immunology and The CAS Key Laboratory of Innate Immunity and Chronic Disease School of Life Sciences and Medical Center University of Science & Technology of China Hefei 230027 China National Key Laboratory of Medical Immunology & Institute of Immunology Second Military Medical University Shanghai 200433 China Department of Health Sciences National Natural Science Foundation of China Beijing 100085 China

The immune system functions in the organ/tissue of the body. The immune cell differentiation and function are influenced by the organ/tissue microenvironments in which they reside, and the interaction of immune cells with the organ/tissue microenvironments may affect and even determine the outcome of the immune responses （Hu and Pasare, 2013; Zajac and Harrington, 2014）.

关键词： Ga

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

TRAVELIng MACHINE DRIVEN By PIEZOELECTRIC BIMORPH

引用

Chinese Journal of Mechanical Engineering 2007年第2期20卷 73-76页

作者： HUA Shunming CHEng Guangming FAN Zunqiang y.ng zhigang SUZUKI Katsiyoshi College of Mechanical Science and Engineering Jilin University Changchun 130025 China Faculty of Technology Yamagata UniversityYonezawa 992-0062 Japan

A rectangular bimorph will vibrate in bending mode under alternating current （AC） electric field. If two opposite tips along longitudinal direction are both clamped, the maximum magnitude of bending displacement occurs on the short center line. Using bimorpb type vibrators forementioned as actuators, an invention of simple traveling machine based on stick-slip principle is presented. The machine can not only move along both x and y direction within horizontal working plane, furthermore, excellent bearing ability and agile response as well as stable step are also proved. In addition, the machine can work on stepping mode and scanning mode at the same time, hence the contradiction between long stroke and high precise positioning is solved. Therefore, it meets the needs of micro/nanometer precise positioning under long stroke and is desired to be used as carry.ng stage for micro-assembling system and locomotive mechanism for miniature robot system.

关键词： Traveling machine Piezoelectric bimorpb Stick-slip principle

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

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

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

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

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

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：