检索结果-南通市图书馆

Robust and conductive hydrogel based on mussel adhesive chemistry for remote monitoring of body signals

Friction 2022年第1期10卷 80-93页

作者： Weijun LI Hao LIU Yuanyuan mi miaoran ZHANG Jinmiao SHI ming ZHAO Melvin A.RAMOS Travis Shihao HU Jianxiong LI Meng XU Quan XU state Key Laboratory of Heavy Oil Processing.Beijing Key Laboratory of Biogas Upgrading Utilization Harvard SEAS-C UPB Joint L aboratory on Petroleum ScienceChina University of PetroleumBeijing 102249China department of Mechanical engineering.California state university Los AngelesCA 90032USA department of Orthopedics General Hospital of Chinese People's Liberat ion Army Beijing 100853China

There is a high demand for hydrogels with multifunctional performance(a combination of adhesive,mechanical,and electrical properties)in biological,tissue engineering,robotics,and smart device ***,a majority of existing hydrogels are relatively rigid and brittle,with limited stretchability;this hinders their application in the emerging field of flexible *** this study,cheap and abundant potato residues were used with polyacrylamide(PAM)to fabricate a multifunctional hydrogel,and chitosan was used for the design of a three-dimentional(3D)network-structured *** as-prepared hydrogels exhibited excellent stretchability,with an extension exceeding 900%and a recovery degree of over 99%.Due to the combination of physical and chemical cross-linking properties and the introduction of dopamine,the designed hydrogel exhibits a remarkable self-healing ability(80%mechanical recovery in 2 h),high tensile strength(0.75 MPa),and ultra-stretchability(900%).The resultant products offer superior properties compared to those of previously reported tough and self-healing hydrogels for wound *** and potato residues were used as scaffold materials for the hydrogels with excellent mechanical *** addition,in vitro experiments show that these hydrogels feature excellent antibacterial properties,effectively hindering the reproduction of ***,the ternary hydrogel can act as a strain sensor with high sensitivity and a gauge factor of *** proposed strategy is expected to serve as a reference for the development of green and recyclable conductive polymers to fabricate *** proposed hydrogel can also act as a suitable strain sensor for bio-friendly devices such as smart wearable electronic devices and/or for health monitoring.

关键词： properties hydrogel conductive

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

考虑配电网静态电压稳定性的微电网优化配置

引用

电力建设 2022年第8期43卷 87-101页

作者：徐艳春张进汪平 mi Lu 梯级水电站运行与控制湖北省重点实验室(三峡大学) 湖北省宜昌市443002 德州农工大学电气与计算机工程系美国德克萨斯州卡城77840

考虑到风机、光伏两种分布式电源出力在时间上具有互补的特征,利用储能装置功率双向流动的特点,将可再生能源和储能装置以微电网的形式接入配电网实现可再生能源的高比例接入。对现有的配电网静态电压稳定性指标进行改进,以配电网的静... 详细信息

考虑到风机、光伏两种分布式电源出力在时间上具有互补的特征,利用储能装置功率双向流动的特点,将可再生能源和储能装置以微电网的形式接入配电网实现可再生能源的高比例接入。对现有的配电网静态电压稳定性指标进行改进,以配电网的静态电压稳定性和运行经济性为目标研究微电网系统的定容选址问题。采用基于K-means++方法的多场景技术处理可再生能源出力不确定性问题,针对配电网不同地区的可再生能源出力特点,计算出风光储三种装置不同的最佳容量配置比例。对平衡优化器(equilibrium optimizer,EO)算法进行改进,利用Tent映射产生的混沌序列代替随机生成的初始种群,根据拥挤度和非支配排序实现多目标问题寻优。最后,在由三种地形组成的IEEE 33节点系统和PG&E-69系统中验证了所提模型和算法的有效性。

关键词：配电网静态电压稳定性多目标优化分布式电源多场景分析微电网

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

一种适用于高渗透率主动配电网的电能质量调节器

引用

电机与控制学报 2022年第1期26卷 46-56,67页

作者：徐艳春樊士荣谢莎莎 mi Lu 三峡大学梯级水电站运行与控制湖北省重点实验室湖北宜昌443002 国网吉林省电力有限公司长春供电公司吉林长春130000 德克萨斯农工大学电气与计算机工程系美国德克萨斯77840

针对高渗透率主动配电网的电能质量扰动问题,提出一种以可调电抗器为基底,结合有限控制集模型预测控制(FCS-MPC)的新型电能质量治理装置。该装置借助磁链控制原理,向串联型有源滤波器变压器二次侧施加电压改变自身阻抗以对电能质量扰动... 详细信息

针对高渗透率主动配电网的电能质量扰动问题,提出一种以可调电抗器为基底,结合有限控制集模型预测控制(FCS-MPC)的新型电能质量治理装置。该装置借助磁链控制原理,向串联型有源滤波器变压器二次侧施加电压改变自身阻抗以对电能质量扰动进行调节,从而达到对电能质量的综合治理。该调节器可以借助自身的结构优势对谐波起隔离作用,结合简单的无源滤波器即可对谐波呈现较好的治理效果。且重新设计并改进了针对该串联型有源滤波器的控制策略以应对复杂电能质量情况,使其可以根据电压、电流的幅值以及谐波畸变率进行自适应权重因子确定,完成多目标优化,相较于传统方法,该方法避免了复杂的参数设定以及大量计算,并对系统中电气分量的精确提取要求较低,更适用于主动配电网,具有一定的先进性。最后结合搭建的IEEE 13节点主动配电网系统,在完成电能质量治理的同时对每个节点的谐波畸变率进行分检测,证明该方法不受鼹鼠效应的影响,说明了其有效性。

关键词：串联型有源滤波器有限控制集模型预测控制主动配电网电能质量可调电抗器分布式电源

来源：

维普期刊数据库

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Low-carbon generation expansion planning considering uncertainty of renewable energy at multi-time scales

引用

Global Energy Interconnection 2021年第3期4卷 261-272页

作者： Yuanze mi Chunyang Liu Jinye Yang Hengxu Zhang Qiuwei Wu Key Laboratory of Power System Intelligent Dispatch and Control of ministry of Education(Shandong university) Jinan 250061ShandongP.R.China Center for Electric Power and Energy Department of Electrical EngineeringTechnical University of DenmarkKgs.LyngbyDenmark

With the development of carbon electricity,achieving a low-carbon economy has become a prevailing and inevitable *** low-carbon expansion generation planning is critical for carbon emission mitigation and a lowcarbon *** this paper,a two-layer low-carbon expansion generation planning approach considering the uncertainty of renewable energy at multiple time scales is ***,renewable energy sequences considering the uncertainty in multiple time scales are generated based on the Copula function and the probability distribution of renewable ***,a two-layer generation planning model considering carbon trading and carbon capture technology is ***,the upper layer model optimizes the investment decision considering the uncertainty at a monthly scale,and the lower layer one optimizes the scheduling considering the peak shaving at an hourly scale and the flexibility at a 15-minute ***,the results of different influence factors on low-carbon generation expansion planning are compared in a provincial power grid,which demonstrate the effectiveness of the proposed model.

关键词： Renewable energy Multi-time scales Uncertainty Low-carbon Generation planning

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 bionic approach for the mechanical and electrical decoupling of an MEMS capacitive sensor in ultralow force measurement

引用

机械工程前沿:英文版 2023年第2期18卷 297-317页

作者： Wendi GAO Bian TIAN Cunlang LIU Yingbiao mi Chen JIA Libo ZHAO Tao LIU Nan ZHU Ping YANG Qijing LIN Zhuangde JIANG Dong SUN state Key Laboratory for Manufacturing Systems engineering International Joint Laboratory for Micro/Nano Manufacturing and Measurement TechnologiesOverseas Expertise Introduction Center for Micro/Nano Manufacturing and Nano Measurement Technologies Discipline InnovationXi’an Jiaotong University(Yantai)Research Institute for Intelligent Sensing Technology and SystemSchool of Mechanical EngineeringXi’an Jiaotong UniversityXi’an 710049China Shandong Laboratory of Yantai Advanced Materials and Green Manufacturing Yantai 265599China state Key Laboratory of Robotics and Systems(HIT) Harbin 150006China Beijing Advanced Innovation Center for Intelligent Robots and Systems Beijing Institute of TechnologyBeijing 100081China department of Biomedical engineering City University of Hong KongHong KongChina

Capacitive sensors are efficient tools for biophysical force measurement,which is essential for the exploration of cellular ***,attention has been rarely given on the influences of external mechanical and internal electrical interferences on capacitive *** this work,a bionic swallow structure design norm was developed for mechanical decoupling,and the influences of structural parameters on mechanical behavior were fully analyzed and optimized.A bionic feather comb distribution strategy and a portable readout circuit were proposed for eliminating electrostatic *** instability was evaluated,and electrostatic decoupling performance was verified on the basis of a novel measurement method utilizing four complementary comb arrays and applicationspecific integrated circuit *** electrostatic pulling experiment showed that the bionic swallow structure hardly moved by 0.770 nm,and the measurement error was less than 0.009% for the area-variant sensor and 1.118% for the gap-variant sensor,which can be easily compensated in *** proposed sensor also exhibited high resistance against electrostatic rotation,and the resulting measurement error dropped below 0.751%.The rotation interferences were less than 0.330 nm and(1.829×10^(-7))°,which were 35 times smaller than those of the traditional differential *** on the proposed bionic decoupling method,the fabricated sensor exhibited overwhelming capacitive sensitivity values of 7.078 and 1.473 pF/μm for gap-variant and area-variant devices,respectively,which were the highest among the current *** immunity to mechanical disturbances was maintained simultaneously,i.e.,less than 0.369% and 0.058% of the sensor outputs for the gap-variant and area-variant devices,respectively,indicating its great performance improvements over existing devices and feasibility in ultralow biomedical force measurement.

关键词： micro-electro-mechanical system capacitive sensor bionics operation instability mechanical and electrical decoupling biomedical force measurement

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

Dependence of interface energetics and kinetics on catalyst loading in a photoelectrochemical system

引用

Nano Research 2019年第9期12卷 2378-2384页

作者： Yumin He Srin ivas Vanka Tianyue Gao Da He Jeremy Espano Yanyan Zhao Qi Dong Chaochao Lang Yongjie Wang Thomas W. Hamann Zetian mi Dunwei Wang department of Chemistry Merkert Chemistry CenterBoston College2609 Beacon StreetChestnut HillMassachusetts 02467USA department of electrical engineering and computer Science University of Michigan1301 Beal AvenueAnn ArborMichigan 48109USA department of Chemistry Michigan State UniversityEast LansingMichigan 48824USA department of electrical and computer engineering McGill University3480 University StreetMontrealQuebecH3A 0E9Canada

Solar hydrogen production by the photoelectrochemical method promises a means to store solar *** it is generally understood that the process is highly sensitive to the nature of the interface between the semiconductor and the electrolyte,a detailed understanding of this interface is still *** instance,few prior studies have established a clear relationship between the interface energetics and the catalyst loading *** we aim to study this relationship on a prototypical Si-based photoelectrochemical *** types of interfaces were examined,one with GaN nanowires as a protection layer and one *** was found that when GaN was present,higher Pt loading (> 0.1 μg/cm2) led to not only better water reduction (and,hence,hydrogen evolution) kinetics but also more favorable interface energetics for greater *** the absence of the protection layer,by stark contrast,increased Pt loading exhibited no measurable influence on the interface energetics,and the main difference was observed only in the hydrogen evolution *** study sheds new light on the importance of interface engineering for further improvement of photoelectrochemical systems,especially concerning the role of catalysts and protection layers.

关键词： photoelectrochemistry water splitt ing Si hydroge n evolutio n catalyst nano wires

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

基于改进LMD和能量相对熵的主动配电网故障定位方法

引用

中国电力 2021年第11期54卷 133-143页

作者：徐艳春赵彩彩孙思涵 mi Lu 梯级水电站运行与控制湖北省重点实验室(三峡大学) 湖北宜昌443002 德州农工大学电气与计算机工程系德克萨斯州卡城77840

针对配电网发生单相接地故障且分布式电源(distributed generations,DGs)大量接入后,配电网结构和运行方式复杂多变、故障后电气量不明显、故障特征弱等特点,提出一种基于改进局部均值分解(improved local mean decomposition,ILMD)和... 详细信息

针对配电网发生单相接地故障且分布式电源(distributed generations,DGs)大量接入后,配电网结构和运行方式复杂多变、故障后电气量不明显、故障特征弱等特点,提出一种基于改进局部均值分解(improved local mean decomposition,ILMD)和能量相对熵的主动配电网故障定位方法。首先,利用镜像延拓将信号在两端延拓,消除LMD存在的端点效应,同时,在信号中加入自适应噪声,克服LMD存在的模态混叠问题,对各区段暂态零序电流进行ILMD分解;然后对分解后所有乘积函数(product function,PF)的能量相对熵进行计算,所有PF分量的相对能量熵之和即为区段间的相对能量熵,通过所设置的定位判据,对故障区段进行判断。仿真结果表明,所提算法在10 kV小电流接地系统和改进的IEEE33节点系统中,在不同的仿真条件下故障定位结果准确率高,验证了所提方法的准确性。

关键词：主动配电网故障定位局部均值分解镜像延拓自适应噪声暂态零序电流

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

含高渗透率风电的配电网暂态电压量化评估方法

引用

中国电力 2022年第7期55卷 152-162页

作者：徐艳春蒋伟俊孙思涵 mi Lu 梯级水电站运行与控制湖北省重点实验室(三峡大学) 湖北宜昌443002 德克萨斯农工大学电气与计算机工程学院美国德克萨斯州卡城77840

随着配电网中分布式风电渗透率的增加,评估影响电网暂态电压稳定性的各有关因素变得尤为重要,而评估暂态电压稳定性的现有指标在具有多暂态特性的场景下无法适用。首先介绍多二元表判据的评估思想,针对电压跌落情形,提出一种母线电压跌... 详细信息

随着配电网中分布式风电渗透率的增加,评估影响电网暂态电压稳定性的各有关因素变得尤为重要,而评估暂态电压稳定性的现有指标在具有多暂态特性的场景下无法适用。首先介绍多二元表判据的评估思想,针对电压跌落情形,提出一种母线电压跌落安全裕度指标。其次,进一步构建母线过电压安全裕度指标,通过引入阶跃因子将两者指标有效结合,得到基于改进多二元表的母线暂态电压安全裕度指标。再次,提出区域暂态电压安全裕度指标来衡量某区域的暂态电压稳定性。最后,基于所提指标,利用Matlab/Simulink对含高渗透率风电的配电网进行仿真分析,在量化影响配电网暂态电压稳定性各因素的同时,验证了该指标的有效性和普适性。

关键词：高渗透率风电配电网暂态电压稳定性改进多二元表暂态电压安全裕度指标量化评估

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

Synergistic therapy of magnetism-responsive hydrogel for soft tissue injuries

引用

Bioactive Materials 2019年第1期4卷 160-166页

作者： Lining Zhang Xiuqin Zuo Shengjie Li mi Sun Huimin Xie Kai Zhang Jikun Zhou Liyun Che Junxuan Ma Zishan Jia Fei Yang Rehabilitation Medicine department PLA General HospitalBeijing100853China Beijing National Laboratory for Molecular Sciences State Key Laboratory of Polymer Physics&ChemistryInstitute of ChemistryChinese Academy of SciencesBeijing100190China School of Chemistry and Chemical engineering University of Chinese Academy of SciencesBeijing100049China Orthopedic Research Institute The First Affiliated Hospital of Sun Yat-sen UniversityGuangzhouChina Guangdong Provincial Key Laboratory of Orthopedics and Traumatology GuangzhouChina

Soft tissue injury is very common and associated with pain,tissue swelling and even malformation if not treated on *** methods include cryotherapy,electrical therapy,ultrasound therapy and anti-inflammatory drug,but none of them is completely *** this work,for a better therapeutic effect,drug therapy and pulsed electromagnetic field(PEMF)therapy were *** constructed a drug delivery system using the tetra-PEG/agar hydrogel(PA).By incorporating Fe3O4 NPs into the hydrogel network,a magnetism-responsive property was achieved in the *** cytotoxicity and in vivo study showed a good biocompatibility of the PA/Fe3O4 hydrogel.A magnetism-controlled release was attained by the incorporation of ***,in vivo study showed a better performance of the DS-loaded PA/Fe3O4 compared with the commercially available DS ointment regarding the recovery of the injured soft ***,this magnetism-responsive hydrogel may represent a promising alternative to treat soft tissue injury.

关键词： Hydrogel Magnetism-responsive Tissue injury Tetra-PEG/agar

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

AlGaN nanocrystals:building blocks for efficient ultraviolet optoelectronics

引用

Photonics Research 2019年第6期7卷 I0014-I0025页

作者： XIANHE LIU KISHWAR MASHOOQ DAVID A.LALEYAN ERIC T.REID ZETIAN mi department of electrical engineering and computer Science University of MichiganAnn Arbor Michigan 48109 USA department of electrical and computer engineering McGill UniversityMontreal Quebec H3A 0E9 Canada

AlGaN nanocrystals have emerged as the building blocks of future optoelectronic devices operating in the ultraviolet(UV) spectral range. In this article, we describe the design and performance characteristics of AlGaN nanocrystal UV light-emitting diodes(LEDs) and surface-emitting UV laser diodes. The selective-area epitaxy and structural, optical, and electrical properties of AlGaN nanocrystals are presented. The recent experimental demonstrations of AlGaN nanocrystal LEDs and laser diodes are also discussed.

关键词： AlGaN nanocrystals optoelectronics

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：