检索结果-内蒙古大学图书馆

IEEE Transactions on Artificial Intelligence 2024年第4期5卷 1586-1598页

作者： Zhuang, Tianming Qin, Zhen Ding, Yi Deng, Fuhu Chen, Leduo Qin, Zhiguang Raymond Choo, Kim-Kwang University of Electronic Science and Technology of China Network and Data Security Key Laboratory of Sichuan Province Chengdu Sichuan610054 China University of Electronic Science and Technology of China School of Information and Software Engineering Chengdu Sichuan610054 China School of Advanced Technology Suzhou Jiangsu215123 China University of Texas at San Antonio Department of Information Systems and Cyber Security San AntonioTX78249 United States

Human skeleton data, which has served in the aspect of human activity recognition, ought to be the most representative biometric characteristics due to its intuitivity and visuality. The state-of-the-art approaches mainly focus on improving modeling spatial correlations within graph topologies. However, the interframes motional representations are also of vital importance, and we argue that they are worth paying attention to and exploring. Therefore, a temporal refinement module with contrastive learning mechanism is proposed, fuzing as a complementary to the conventional spatial graph convolution layer. In addition, in order to further exploiting the interframe variances and generalizing graph convolutional network (GCN) operation to temporal dimension, a temporal-correlation matrix is introduced to effectively capture dynamic dependencies within frame-pairs, enhancing semantic feature representation. Moreover, since GCN is a typical local operator which lacks of capability to fully model the long-term relations along spatial and temporal variation, to move beyond the limitation, a spatial-temporal cascaded aggregation (STCA) module is designed to enlarge the receptive filter scale. The overall recognition framework consists of three above novelties, which is capable of achieving remarkable performance by evaluating on benchmark datasets (i.e., NTU RGB+D 60, NTU RGB+D 120, PKU-MMD, and Kinetics Skeleton 400). Extensive experiments demonstrate the effectiveness of the proposed framework, e.g., performing recognition accuracy rate of 90.9% and 96.8% on NTU RGB+D 60, 87.9% and 88.9% on NTU RGB+D 120. © 2020 IEEE.

关键词： Convolution

来源：评论

学校读者我要写书评

暂无评论

Advances in Intelligent Control of Magnetically Actuated Micro-robots

引用

Jiqiren/Robot 2023年第5期45卷 603-625页

作者： Xu, Tiantian Huang, Chenyang Liu, Jia Xu, Yanhua Lai, Zhengyu Wu, Xinyu Guangdong Provincial Key Laboratory of Robotics and Intelligent System Shenzhen Institute of Advanced Technology Chinese Academy of Sciences Shenzhen518055 China Shenzhen Key Laboratory of Minimally Invasive Surgical Robotics and System Shenzhen Institute of Advanced Technology Chinese Academy of Sciences Shenzhen518055 China University of Chinese Academy of Sciences Beijing100049 China

Micro-robots wirelessly actuated by low-intensity electromagnetic fields can move in narrow environment and complete complex tasks, such as targeted drug delivery, micromanipulation, and environment detection. This paper introduces the advances of intelligent control of magnetically actuated micro-robots, mainly including the applications of intelligent control methods to the following areas: from rigid structure to flexible structure of magnetically actuated micro-robots, from single motion mode to multiple motion modes of magnetically actuated micro-robots, from open-loop control to closed-loop control of magnetically actuated micro-robots, from single individual and single swarm to multiple individuals of magnetically actuated micro-robots. Finally, the future development directions of magnetically actuated micro-robots are expected, including magnetic drives for larger workspace, micro-robots with more motion modes, medical micro-robots with flexible structures, autonomous navigation of micro-robots, and control of multiple magnetically actuated micro-robots. © 2023 Chinese Academy of Sciences. All rights reserved.

关键词： Controlled drug delivery

来源：评论

学校读者我要写书评

暂无评论

Stretchable supercapacitor based on a hierarchical PPy/CNT electrode and hybrid hydrogel electrolyte with a wide operating temperature

引用

Carbon Energy 2022年第4期4卷 527-538页

作者： Yanfang Ren Yunlong Liu Siying Wang Qian Wang Shuhong Li Wenjun Wang Xiaochen Dong Shandong Provincial Key Laboratory of Optical Communication Science and Technology School of Physical Science and Information TechnologyLiaocheng UniversityLiaochengShandongChina Key Laboratory of Flexible Electronics(KLOFE) School of Physical and Mathematical SciencesInstitute of Advanced Materials(IAM)Nanjing Tech University(NanjingTech)NanjingJiangsuChina

Hydrogel is frequently used as a solid electrolyte for all solid-state supercapacitors(SCs)because of its liquid-like ion-transport property and high ***,due to the higher water content,the hydrogel electrolyte undergoes inevitable freezing and/or dehydration with climate ***,polypyrrole/carbon all-solid-state SCs(PCSCs)were developed based on a hierarchical polypyrrole/carbon nanotube electrode and a highly stretchable double-network polymer hydrogel electrolyte with LiCl/ethylene glycol as a mixed *** PCSCs showed excellent electrochemical performance and cycle stability with a wide operating *** specific capacitances could reach 202.2 and 112.3 mF cm^(−2) at current densities of 0.5 and 3.0 mA cm^(−2),***,the PCSCs showed outstanding mechanical properties in maintaining a high areal capacitance under deformations of bending and *** excellent water retention of the device also ensured the stable electrochemical performance of PCSCs in a wide temperature range(30–80℃),which could potentially represent a reliable application in various harsh environments.

关键词： antidrying property flexibility hydrogel electrolyte supercapacitor

来源：评论

学校读者我要写书评

暂无评论

Vitamin D-binding protein in plasma microglia-derived extracellular vesicles as a potential biomarker for major depressive disorder

引用

Genes & Diseases 2024年第2期11卷 1009-1021页

作者： Gaojia Zhang Ling Li Yan Kong Dandan Xu Yu Bao Zhiting Zhang Zhixiang Liao Jiao Jiao Dandan Fan Xiaojing Long Ji Dai Chunming Xie Zhiqiang Meng Zhijun Zhang Department of Neurology Affiliated Zhongda HospitalResearch Institution of NeuropsychiatrySchool of MedicineSoutheast UniversityNanjingJiangsu 210009China Department of Biochemistry and Molecular Biology School of MedicineSoutheast UniversityNanjingJiangsu 210009China Shenzhen Key Laboratory of Drug Addiction Brain Cognition and Brain Disease InstituteShenzhen Institute of Advanced TechnologyChinese Academy of Sciences (CAS)ShenzhenGuangdong 518000China CAS Key Laboratory of Brain Connectome and Manipulation The Brain Cognition and Brain Disease Institute (BCBDI)Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdong 518055China Lauterbur Research Center for Biomedical Imaging Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdong 518055China Shenzhen-Hong Kong Institute of Brain Sciences-Shenzhen Fundamental Research Institutions ShenzhenGuangdong 518000China Brain Cognition and Brain Disease Institute Department of Mental Health and Public HealthFaculty of Life and Health SciencesShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdong 518055China

No well-established biomarkers are available for the clinical diagnosis of major depressive disorder(MDD).Vitamin D-binding protein(VDBP)is altered in plasma and postmortem dorsolateral prefrontal cortex(DLPFC)tissues of MDD ***,the role of VDBP as a potential biomarker of MDD diagnosis was further *** extracellular vesicles(EVs)and brain cell-derived EVs(BCDEVs)were isolated from the plasma of first-episode drug-naïve or drug-free MDD patients and well-matched healthy controls(HCs)in discovery(20 MDD patients and 20 HCs)and validation cohorts(88 MDD patients and 38 HCs).VDBP level in the cerebrospinal fluid(CSF)from chronic glucocorticoid-induced depressed rhesus macaques or prelimbic cortex from lipopolysaccharide(LPS)-induced depressed mice and wild control groups was measured to evaluate its relationship with VDBP in plasma microglia-derived extracellular vesicles(MDEVs).VDBP was significantly decreased in MDD plasma MDEVs compared to HCs,and negatively correlated with HAMD-24 score with the highest diagnostic accuracy among *** in plasma MDEVs was decreased both in depressed rhesus macaques and mice.A positive correlation of VDBP in MDEVs with that in CSF was detected in depressed rhesus *** levels in prelimbic cortex microglia were negatively correlated with those in plasma MDEVs in depressed *** main results suggested that VDBP in plasma MDEVs might serve as a prospective candidate biomarker for MDD diagnosis.

关键词： Biomarker Cerebrospinal fluid Major depressive disorder Microglia derived extracellular vesicles Vitamin-D binding protein

来源：评论

学校读者我要写书评

暂无评论

Construction of ZnO@CDs@Co_(3)O_(4) sandwich heterostructure with multi-interfacial electron-transfer toward enhanced photocatalytic CO_(2) reduction

引用

Chinese Chemical Letters 2024年第4期35卷 147-152页

作者： Xiuzheng Deng Yi Ke Jiawen Ding Yingtang Zhou Hui Huang Qian Liang Zhenhui Kang Advanced Catalysis and Green Manufacturing Collaborative Innovation Center CNPC-CZU Innovation AllianceSchool of Petrochemical EngineeringChangzhou UniversityChangzhou 213164China Institute of Functional Nano&Soft Materials(FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials&DevicesSoochow UniversitySuzhou 215123China Zhejiang Key Laboratory of Petrochemical Environmental Pollution Control National Engineering Research Center for Marine AquacultureMarine Science and Technology CollegeZhejiang Ocean UniversityZhoushan 316004China

Photocatalytic conversion of CO_(2) into small-molecule chemical feedstocks can meet the growing demand for energy and alleviate the global warming. Herein, a p-n ZnO@CDs@Co_(3)O_(4) heterojunction with sandwich structure was constructed by calcination method of self-assembled ZIF-8@CDs@ZIF-67. The ZnO@CDs@Co_(3)O_(4) with well-defined interfacial structure exhibited the significantly enhanced photocatalytic CO_(2) reduction activity, and the optimal catalyst indicated the(CO + CH_(4)) evolution rate of 214.53μmol g^(-1)h^(-1) under simulated solar light, which was superior to ZnO, Co_(3)O_(4) and binary ZnO@Co_(3)O_(4).The internal cavity, exposed active sites, multiple interfaces and constructed p-n heterojunction can facilitate the light harvesting and photoexcited electron transfer. Besides, after introduction of CDs placed in the middle layer between ZnO and Co_(3)O_(4), CDs with excellent photoelectric property further promoted charge separation and migration. This work represents an appealing strategy to construct well-defined photocatalysts for boosting CO_(2) photoreduction.

关键词： Metal-organic framework Photocatalytic CO_(2) reduction Carbon dots p-n heterojunction Sandwich heterostructure

来源：评论

学校读者我要写书评

暂无评论

Strain‑Induced Surface Interface Dual Polarization Constructs PML‑Cu/Bi_(12)O_(17)Br_(2) High‑Density Active Sites for CO_(2) Photoreduction

引用

Nano-Micro Letters 2024年第5期16卷 169-183页

作者： Yi Zhang Fangyu Guo Jun Di Keke Wang Molly Meng‑Jung Li Jiayu Dai Yuanbin She Jiexiang Xia Huaming Li School of Chemistry and Chemical Engineering Institute for Energy ResearchSchool of the Environment and Safety EngineeringJiangsu UniversityZhenjiang 212013People’s Republic of China State Key Laboratory Breeding Base of Green Chemistry‑Synthesis Technology College of Chemical EngineeringZhejiang University of TechnologyHangzhou 310014People’s Republic of China College of Science and Hunan Key Laboratory of Extreme Matter and ApplicationsNational University of Defense TechnologyChangsha 410073People’s Republic of China Department of Applied Physics The Hong Kong Polytechnic UniversityHung HomHong KongPeople’s Republic of China School of Chemistry and Chemical Engineering National Special Superfine Powder Engineering Research CenterNanjing University of Science and TechnologyNanjing 210094People’s Republic of China Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Zhejiang Normal UniversityJinhua 321004People’s Republic of China

The insufficient active sites and slow interfacial charge trans-fer of photocatalysts restrict the efficiency of CO_(2) *** synchronized modulation of the above key issues is demanding and ***,strain-induced strategy is developed to construct the Bi–O-bonded interface in Cu porphyrin-based monoatomic layer(PML-Cu)and Bi_(12)O_(17)Br_(2)(BOB),which triggers the surface interface dual polarization of PML-Cu/BOB(PBOB).In this multi-step polarization,the built-in electric field formed between the interfaces induces the electron transfer from con-duction band(CB)of BOB to CB of PML-Cu and suppresses its reverse ***,the surface polarization of PML-Cu further promotes the electron converge in Cu *** introduction of PML-Cu endows a high density of dispersed Cu active sites on the surface of PBOB,significantly promoting the adsorption and activation of CO_(2) and CO *** conversion rate of CO_(2) photoreduction to CO for PBOB can reach 584.3μmol g-1,which is 7.83 times higher than BOB and 20.01 times than *** work offers valuable insights into multi-step polarization regulation and active site design for catalysts.

关键词： Bi_(12)O_(17)Br_(2) Porphyrin CO_(2)photoreduction Polarization Active sites

来源：评论

学校读者我要写书评

暂无评论

Quantum walks of correlated photons in non-Hermitian photonic lattices

引用

Physical Review B 2024年第9期110卷 094308页

作者： Mingyuan Gao Chong Sheng Yule Zhao Runqiu He Liangliang Lu Wei Chen Kun Ding Shining Zhu Hui Liu National Laboratory of Solid State Microstructures and School of Physics Collaborative Innovation Center of Advanced Microstructures Key Laboratory of Quantum Materials and Devices Key Laboratory of Optoelectronic Technology of Jiangsu Province School of Physical Science and Technology Department of Physics State Key Laboratory of Surface Physics and Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education)

Entanglement entropy characterizes the correlation of multiparticles and unveils the crucial features of open quantum systems. However, the experimental realization of exploring entanglement in non-Hermitian systems remains a challenge. In parallel, quantum walks have offered the possibility of studying the underlying mechanisms of non-Hermitian physics, which includes exceptional points, the non-Hermitian skin effect, and non-Bloch phase transitions. Unfortunately, these studies have only involved and prevailingly focused on the behavior of a single particle. Here, we propose and experimentally realize quantum walks of two indistinguishable photons in engineered non-Hermitian photonic lattices. We have successfully observed the unidirectional behavior of quantum walks in the bulk far from the edges induced by the skin effect. Moreover, we experimentally reveal the suppression of entanglement that is caused by the skin effect in non-Hermitian systems. Our study may facilitate a deep understanding of entanglement in open quantum many-body systems that are far from thermal equilibrium.

关键词： Photonics Skin effect Non-Hermitian systems Transfer matrix method

来源：评论

学校读者我要写书评

暂无评论

Crystal plane induced in-situ electrochemical activation of manganese-based cathode enable long-term aqueous zinc-ion batteries

引用

Green Energy & Environment 2023年第5期8卷 1429-1436页

作者： Yuxin Gao Jiang Zhou Liping Qin Zhenming Xu Zhexuan Liu Liangbing Wang Xinxin Cao Guozhao Fang Shuquan Liang School of Materials Science and Engineering Central South UniversityChangsha410083HunanChina Graduate Department Guangxi University of Science and TechnologyLiuzhou545006GuangxiChina College of Materials Science and Technology Nanjing University of Aeronautics and AstronauticsNanjing210016JiangsuChina Key Laboratory of Electronic Packaging and Advanced Functional Materials of Hunan Province Central South UniversityChangsha410083HunanChina

Rapid capacity decay and sluggish reaction kinetics are major barriers hindering the applications of manganese-based cathode materials for aqueous zinc-ion ***,the effects of crystal plane on the in-situ transformation behavior and electrochemical performance of manganese-based cathode is discussed.A comprehensive discussion manifests that the exposed(100)crystal plane is beneficial to the phase transformation from tunnel-structured MnO_(2) to layer-structured ZnMn_(3)O_(7)·3H_(2)O,which plays a critical role for the high reactivity,high capacity,fast diffusion kinetics and long cycling ***,a two-stage zinc storage mechanism can be demonstrated,involving continuous activation reaction and phase transition *** expected,it exhibits a high capacity of 275 mAh g^(-1)at 100 mA g^(-1),a superior durability over 1000 cycles and good rate *** study may open new windows toward developing advanced cathodes for ZIBs,and facilitate the applications of ZIBs in large-scale energy storage system.

关键词： Crystal plane Electrochemical activation Phase transition reaction Cycling stability Zinc-ion batteries

来源：评论

学校读者我要写书评

暂无评论

Optical imaging of in vivo adoptive T-cell therapy:State of the art and challenges

引用

iRADIOLOGY 2023年第3期1卷 225-235页

作者： Qingshuang Li Dehong Hu Duyang Gao Guanhui Gao Can Zhang Zonghai Sheng State Key Laboratory of Natural Medicines Jiangsu Key Laboratory of Drug Discovery for Metabolic DiseasesCenter of Advanced Pharmaceuticals and BiomaterialsChina Pharmaceutical UniversityNanjingJiangsuChina Paul C.Lauterbur Research Center for Biomedical Imaging Institute of Biomedical and Health EngineeringShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenChina Materials Science and Electron Microscopy Department Rice UniversityHoustonTexasUSA

Adoptive T-cell therapy(ACT),which is an important type of live cell therapy,has achieved unprecedented success in treating hematological *** studies have shown that ACT is also a promising treatment for solid *** the in vivo fates(distribution,homing,infiltration,proliferation,and exhaustion)of the immune cells used for ACT(ACT immune cells)is of great importance to promote basic research and clinical translation of *** imaging techniques,including bioluminescence,fluorescence,and photoacoustic imaging,have the advantages of high sensitivity,high spatiotemporal resolution,minimal exposure to harmful radiation,and simple ***,various types of optical imaging probes,including bioluminescence,fluorescence,and photoacoustic imaging probes,have been used to visualize ACT immune cells in vivo and evaluate the molecular mechanism,efficacy,and side effects of *** this review,the optical imaging probes and labeling methods that have been used for in vivo visualization ofACT immune cells are summarized,and the opportunities and challenges of using optical imaging to visualize ACT immune cells in vivo are discussed.

关键词： adoptive T-cell therapy bioluminescence imaging fluorescence imaging immunotherapy optical imaging photoacoustic imaging

来源：评论

学校读者我要写书评

暂无评论

Manipulating charge density wave state in kagome compound RbV_(3)Sb_(5)

引用

Chinese Physics B 2023年第9期32卷 391-395页

作者：孟雨欣薛成龙窦立国赵伟民汪琪玮徐永杰刘祥麒夏威郭艳峰李绍春 National Laboratory of Solid State Microstructures School of PhysicsNanjing UniversityNanjing 210093China Collaborative Innovation Center of Advanced Microstructures Nanjing UniversityNanjing 210093China School of Physical Science and Technology Shanghai Tech UniversityShanghai 201210China Shanghai Tech Laboratory for Topological Physics Shanghai 201210China Jiangsu Provincial Key Laboratory for Nanotechnology Nanjing UniversityNanjing 210093China Hefei National Laboratory Hefei 230088China

Owing to the unique electronic structure,kagome materials AV_(3)Sb_(5)(A=K,Rb,Cs)provide a fertile platform of quantum phenomena such as the strongly correlated state and topological Dirac *** is well known that RbV_(3)Sb_(5)exhibits a 2×2 unconventional charge density wave(CDW)state at low temperature,and the mechanism is ***,by using scanning tunneling microscopy/spectroscopy(STM/STS),we successfully manipulated the CDW state in the Sb plane of RbV_(3)Sb_(5),and realized a new3(1/2)×3(1/2)modulation together with the ubiquitous 2×2 period in the CDW state of RbV_(3)Sb_(5).This work provides a new understanding of the collective quantum ground states in the kagome materials.

关键词： kagome material charge density wave scanning tunneling microscopy

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：