检索结果-南通市图书馆

High‑Performance Flexible Microneedle Array as a Low‑Impedance Surface Biopotential Dry Electrode for Wearable Electrophysiological Recording and Polysomnography

引用

Nano-Micro Letters 2022年第8期14卷 142-163页

作者： Junshi Li Yundong ma Dong Huang Zhongyan Wang Zhitong Zhang Yingjie Ren Mengyue Hong Yufeng Chen tingyu Li Xiaoyi Shi Lu Cao Jiayan Zhang Bingli Jiao Junhua Liu Hongqiang Sun Zhihong Li National Key Laboratory of Science and Technology on Micro/Nano Fabrication School of Integrated CircuitsPeking UniversityBeijing 100871People’s Republic of China Peking University Sixth Hospital Peking University Institute of Mental HealthNHC Key Laboratory of Mental Health(Peking University)National Clinical Research Center for Mental Disorders(Peking University Sixth Hospital)Beijing 100191People’s Republic of China School of Electronics Peking UniversityBeijing 100871People’s Republic of China Hypnometry Microsystem Beijing 100871People’s Republic of China College of Engineering Peking UniversityBeijing 100871People’s Republic of China

Microneedle array(MNA)electrodes are an effective solution to achieve high-quality surface biopotential recording without the coordination of conductive gel and are thus very suitable for long-term wearable *** schemes are limited by flexibility,biosafety,and manufacturing costs,which create large barriers for wider ***,we present a novel flexible MNA electrode that can simultaneously achieve flexibility of the substrate to fit a curved body surface,robustness of microneedles to penetrate the skin without fracture,and a simplified process to allow mass *** compatibility with wearable wireless systems and the short preparation time of the electrodes significantly improves the comfort and convenience of electrophysiological *** normalized electrode–skin contact impedance reaches 0.98 kΩcm^(2)at 1 kHz and 1.50 kΩcm^(2)at 10 Hz,a record low value compared to previous reports and approximately 1/250 of the standard *** morphology,biosafety,and electrical/mechanical properties are fully characterized,and wearable recordings with a high signal-to-noise ratio and low motion artifacts are *** first reported clinical study of microneedle electrodes for surface electrophysiological monitoring was conducted in tens of healthy and sleep-disordered subjects with 44 nights of recording(over 8 h per night),providing substantial evidence that the electrodes can be leveraged to substitute for clinical standard electrodes.

关键词： Flexible microneedle array Dry electrode Low-impedance electrode–skin contact Wearable wireless electrophysiological recording Polysomnography

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

Ultrathin curved PdNiRu nanosheets as bifunctional catalysts for oxygen reduction and ethylene glycol oxidation

引用

Nano Research 2024年第5期17卷 3777-3784页

作者： Xianzeng Li tingyu Lu Huan Pang Mingyi Zhang Dongdong Xu Lin Xu Min Han Jun Yang Jiangsu Key Laboratory of New Power Batteries Jiangsu Collaborative Innovation Center of Biomedical Functional MaterialsSchool of Chemistry and Materials ScienceNanjing Normal UniversityNanjing 210023China Fujian Cross Strait Institute of Flexible Electronics(Future Technology) Fujian Normal UniversityFuzhou 350117China State Key Laboratory of Multiphase Complex Systems Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China State Key Laboratory of Coordination Chemistry Nanjing UniversityNanjing 210023China School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhou 225009China Key Laboratory for Photonic and Electronic Bandgap materials Ministry of EducationSchool of Physics and Electronic EngineeringHarbin Normal UniversityHarbin 150025China

Pd-based metallic nanosheets with advanced physicochemical properties have been widely prepared and employed in various electrocatalytic ***,few concerns were focused on their multiple performances in different ***,highly curved and ultrathin PdNiRu nanosheets(NSs)are developed by facile wet-chemistry strategy and exhibit excellent electrocatalytic performance toward both oxygen reduction reaction(ORR)and ethylene glycol oxidation reaction(EGOR).Owing to the synergistically structural(e.g.,ultrathin,curved,defects/steps-rich)and compositional(ternary alloy)advantages,PdNiRu NSs exhibited enhanced ORR and EGOR specific/mass activities and better stability/durability than control *** specific activity(5.52 ma·cm^(−2))and mass activity(1.13 A·mg_(Pd)^(−1))of the PdNiRu NSs in ORR are 4.8 and 3.4 times as the ones of commercial Pt/C,*** mass activity of PdNiRu NSs(3.86 A·mg_(Pd)^(−1))in EGOR is 2.6 times as commercial Pd/C(1.51 A·mg_(Pd)^(−1)).This study is helpful for the development of desired electrocatalysts with multi-functional application in practical fuel cells.

关键词： ultrathin nanosheets noble metal electrocatalysts bifunctional

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

Geochronology and Tectonic Evolution of the West Section of the Jiangnan Orogenic Belt

引用

Acta Geologica Sinica(English Edition) 2015年第5期89卷 1497-1515页

作者： ZHANG Heng LI Tingdong XIE Ying ZHANG Chuanheng GAO Linzhi GENG Shufang CHEN tingyu YOU Guoqing Institute of Geology Chinese Academy of Geological Sciences China University of Geosciences Research Institute of Petroleum Exploration and Development Huabei Oilfield Company Petro China

As an important part of South China Old Land, the Jiangnan Orogenic Belt plays a significant role in explaining the assembly and the evolution of the Upper Yangtze Block and Cathaysia, as well as the structure and growth mechanism of continental lithosphere in South *** Lengjiaxi and the Banxi groups are the base strata of the west section of the Jiangnan Orogenic ***, the research of geochronology and tectonic evolution of the Lengjiaxi and the Banxi groups is *** maximum sedimentary age of the Lengjiaxi Group is ca.862 ma, and the minimum is ca.822 *** Zhangjiawan Formation, which is situated in the upper part of the Banxi Group is ca.802 *** Lengjiaxi Group and equivalent strata should thus belong to the Neoproterozoic in *** Jiangnan Orogenic Belt consisting of the Lengjiaxi and the Banxi groups as important constituents is not a Greenville Orogen Belt（1.3 Ga–1.0 Ga）.The Jiangnan Orogenic Belt is a recyclic orogenic belt, and the prototype basin is a foreland basin with materials derived from the southwest and the sediments belong to the active continental *** combining large amounts of dating data of the Lengjiaxi and the Banxi groups as well as equivalent strata, the evolutionary model of the western section of the Jiangnan Orogenic Belt is established as follows： Before 862 ma, the South China Ocean was subducted beneath the Upper Yangtze Block, while a continental island arc was formed on the side near the Upper Yangtze *** South China Ocean was not closed in this *** 862 ma to 822 ma, the Upper Yangtze Block was collided with Cathaysia; and sediments began to be deposited in the foreland basin between the two *** Lengjiaxi Group and equivalent strata were thus formed and the materials might be derived from the recyclic orogenic *** 822 ma to 802 ma, Cathaysia continued pushing to the Upper Yangtze Block, experienced the Jinning-Sibao Movement（Wuling Movement）; as result, the folded ba

关键词： zircon U-Pb age evolutionary process Lengjiaxi Group Banxi Group Jinning-Sibao Movement(Wuling Movement) Jiangnan Qrogenic Belt

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

Photobiomodulation inhibits the expression of chondroitin sulfate proteoglycans after spinal cord injury via the Sox9 pathway

引用

Neural Regeneration Research 2024年第1期19卷 180-189页

作者： Zhihao Zhang Zhiwen Song Liang Luo Zhijie Zhu Xiaoshuang Zuo Cheng Ju Xuankang Wang Yangguang ma tingyu Wu Zhou Yao Jie Zhou Beiyu Chen Tan Ding Zhe Wang Xueyu Hu Department of Orthopedics Xijing HospitalFourth Military Medical UniversityXi’anShaanxi ProvinceChina

Both glial cells and glia scar greatly affect the development of spinal cord injury and have become hot spots in research on spinal cord injury *** cellular deposition of dense extracellular matrix proteins such as chondroitin sulfate proteoglycans inside and around the glial scar is known to affect axonal growth and be a major obstacle to autogenous *** proteins are thus candidate targets for spinal cord injury *** previous studies demonstrated that 810 nm photo biomodulation inhibited the formation of chondroitin sulfate proteoglycans after spinal cord injury and greatly improved motor function in model ***,the specific mechanism and potential targets involved remain to be *** this study,to investigate the therapeutic effect of photo biomodulation,we established a mouse model of spinal cord injury by T9 clamping and irradiated the injury site at a power density of 50 mW/cm~2 for 50 minutes once a day for 7 consecutive *** found that photobiomodulation greatly restored motor function in mice and down regulated chondroitin sulfate proteoglycan expression in the injured spinal *** analysis revealed that photobiomodulation inhibited the expression of proteoglycan-related genes induced by spinal cord injury,and versican,a type of proteoglycan,was one of the most markedly changed *** staining showed that after spinal cord injury,versican was present in astrocytes in spinal cord *** expression of versican in primary astrocytes cultured in vitro increased after inflammation induction,whereas photobiomodulation inhibited the expression of ve ***,we found that the increased levels of p-Smad3,p-P38 and p-Erk in inflammatory astrocytes were reduced after photobiomodulation treatment and after delivery of inhibitors including FR 180204,(E)-SIS3,and SB *** suggests that Sma d 3/Sox9 and maP K/Sox9 pathways may be involved in the effects of photobiomodulatio

关键词： chondroitin sulfate proteoglycans Erk maPK P38 photobiomodulation principal component analysis Smad3 Sox9 spinal cord injury versican

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

Geochronology of Yanshanian magmatism and Metamorphism in the Hinterland of the Dabie Mountains and Their Geologic Implications

引用

Acta Geologica Sinica(English Edition) 1992年第2期66卷 155-163,222页

作者： Chen tingyu Niu Baogui Liu Zhigang Fu Yunlian Ren Jishun Institute of Geology, Chinese Academy of Geological Sciences, Beijing Institute of Geology Chinese Academy of Geological Sciences Beijing

A strong tectono-magmatic thermal event has been revealed by field observations of granitic, migmatiticand metamorphic rocks in the hinterland of the Dabie Mountains. K-Ar, Ar-Ar and Rb-Sr determinationsshow that the event took place 133-117 ma ago (Yanshanian). Contemporaneously, a southwestwardthrust-type ductile shearing at multiple levels occurred in the lower crust or at even deeper levels, suggestingthat the Dabie Mountains region was still under the influence ot strong continent-continent overlappingtectonism of the Yangtze block under the Sino-Korean block at depth. Metamorphic rocks of amphibolitefacies, migmatites and deep structural deformations resulting from this tectonothermal event are now exposedto the surface. The present features of the Dabie Mountains thus have appeared only since ca. 100 ma B.P. Theblock composed of the Dabie Group is not an uplift or shield which would have undergone a long-continuederosion.

关键词： Geochronology of Yanshanian magmatism and Metamorphism in the Hinterland of the Dabie Mountains and Their Geologic Implications

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

Electrocatalytic Performance of Carbon Layer and Spherical Carbon/Carbon Cloth Composites Towards Hydrogen Evolution from the Direct Electrolysis of Bunsen Reaction Product

引用

Chemical Research in Chinese Universities 2024年第1期40卷 109-118页

作者： ZHANG Wanjia GUO tingyu LIU Yanhua ZHANG Xuewei ZOU Bo ZHAO Chun SUO Hui WANG Hui ZHAO Xu College of Chemistry Jilin UniversityChangchun130012P.R.China State Key Laboratory of Integrated Optoelectronics College of Electronic Science and EngineeringJilin UniversityChangchun130012P.R.China Department of Chemical and Biological Engineering University of SaskatchewanSaskatoonSKS7N 5A9Canada

A composite material comprising a carbon layer and spherical carbon/carbon cloth(C-SC/CC)was fabricated using a hydrothermal-pyrolysis method,employing carbon cloth as the substrate and glucose as the carbon *** C-SC/CC electrode was evaluated as an electrocatalytic electrode for hydrogen production by electrolysis of Bunsen reaction *** electrode prepared with 4 g of glucose and annealed at 800°C showed excellent electrocatalytic *** requires only a potential of 185 mV(***)to achieve a current density of 10 ma/***,the electrode demonstrated good stability with a 6%loss in current density after 1000 cycles of scanning from 0.2 V to 1.2 *** results indicate the potential of the SC/CC electrode as an efficient and durable electrocatalyst for the electrolysis of H2SO4 and HI.

关键词： Electrolysis of Bunsen reaction product Carbon material Composite material Hydrogen production

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

Proposal of translation of commonly-used acupuncture and moxibustion terminology by Beijing University of Chinese Medicine

引用

Journal of Traditional Chinese Medical Sciences 2023年第2期10卷 127-128页

作者： tingyu Fang Shenglou Ni Yanping Wang Xiaoli Li Liangxiao ma Ochs Shelley School of Humanities Beijing University of Chinese MedicineBeijing102488China Periodical Center Beijing University of Chinese MedicineBeijing102488China School of Acupuncture-Moxibustion and Tuina Beijing University of Chinese MedicineBeijing102488China Acupuncture Works LouisvilleKY40205USA

General Secretary Xi Jinping points out“traditional Chinese medicine(TCM)is a treasure of the Chinese *** must pro-tect,explore,develop and inherit it well.”According tothe latest in-formation,1 TCM has spread to 196 countries and regions around the world,indicating that it enjoys a good development abroad,especially the development of acupuncture and moxibustion.

关键词： medicine(TCM) acupuncture moxibustion

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

In situ establishment of Co/MoS_(2) heterostructures onto inverse opal‐structured N,S‐doped carbon hollow nanospheres:Interfacial and architectural dual engineering for efficient hydrogen evolution reaction

引用

Smartmat 2021年第4期2卷 591-602页

作者： tingyu Lu Tongfei Li Desheng Shi Jialin Sun Huan Pang Lin Xu Jun Yang Yawen Tang Jiangsu Key Laboratory of New Power Batteries School of Chemistry and Materials ScienceNanjing Normal UniversityNanjingJiangsuChina 2 School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhouJiangsuChina Nanjing IPE Institute of Green manufacturing Industry NanjingJiangsuChina State Key Laboratory of Multiphase Complex Systems Institute of Process EngineeringChinese Academy of SciencesBeijingChina

Rational design of low‐cost and high‐efficiency non‐precious metal‐based catalysts toward the hydrogen evolution reaction(HER)is of paramount significance for the sustainable development of the hydrogen *** manipulationinduced electronic modulation represents a sophisticated strategy to enhance the intrinsic activity of a non‐precious ***,we demonstrate the straightforward construction of Co/MoS_(2) hetero‐nanoparticles anchored on inverse opal‐structured N,S‐doped carbon hollow nanospheres with an ordered macroporous framework(denoted as Co/MoS_(2)@N,S-CHNSs hereafter)via a templateassisted *** experimental evidence and theoretical calculations reveal that the formation of Co/MoS_(2) heterojunctions can effectively modulate the electronic configuration of active sites and optimize the reaction pathways,remarkably boosting the intrinsic ***,the inverse opal‐structured carbon substrate with an ordered porous framework is favorable to enlarge the accessible surface area and provide multidimensional mass transport channels,dramatically expediting the reaction *** to the compositional synergy and structural superiority,the fabricated Co/MoS_(2)@N,S-CHNSs exhibit excellent HER activity with a low overpotential of 105mV to afford a current density of 10 ma/cm^(2).The rationale of interface manipulation and architectural design herein is anticipated to be inspirable for the future development of efficient and earth‐abundant electrocatalysts for a variety of energy conversion systems.

关键词： heterostructures hydrogen evolution reaction inversed opal structure MoS_(2)

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

压水堆装卸料机堆芯定位试验方法的比较分析

引用

核动力工程 2015年第4期36卷 111-114页

作者：刘义清马雷颜廷宇华能山东石岛湾核电有限公司山东荣成264312

装卸料机作为压水堆核电厂燃料装卸与贮存系统(PMC系统)的关键设备之一,其堆芯定位试验是进行堆芯首次装料的前提,也是机组换料的保障。单点定位法是目前国内压水堆机组装卸料机堆芯定位试验普遍使用的方法。某核电厂装卸料机用单点定... 详细信息

装卸料机作为压水堆核电厂燃料装卸与贮存系统(PMC系统)的关键设备之一,其堆芯定位试验是进行堆芯首次装料的前提,也是机组换料的保障。单点定位法是目前国内压水堆机组装卸料机堆芯定位试验普遍使用的方法。某核电厂装卸料机用单点定位法进行堆芯定位试验时,部分位置出现模拟燃料组件与堆内构件围板磕碰问题。提出四点定心平均步长堆芯定位方法,成功地解决了磕碰问题,并比较分析单点定位法和四点定心平均步长法之间的优缺点。

关键词：装卸料机堆芯定位单点定位法四点定心平均步长法

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

中国乡村民宿发展研究综述与展望

引用

中国农业资源与区划 2023年第12期44卷 165-170页

作者：马亮颜亭玉北京农学院文法与城乡发展学院

[目的]促进乡村民宿产业健康发展，对于乡村振兴战略背景下乡村旅游的转型升级和产业提升具有重要意义。文章通过梳理2011以来乡村民宿研究的发展过程和相关理论内容，进而提出未来研究重点。[方法]基于知网期刊数据库及其配套的文献计... 详细信息

[目的]促进乡村民宿产业健康发展，对于乡村振兴战略背景下乡村旅游的转型升级和产业提升具有重要意义。文章通过梳理2011以来乡村民宿研究的发展过程和相关理论内容，进而提出未来研究重点。[方法]基于知网期刊数据库及其配套的文献计量法。[结果]（1）近12年来，乡村民宿的研究维度呈现由单一的国外经验的引进学习，向结合中国自身文化特色、配合国家乡村振兴战略、应对新冠疫情进行产业升级等更多发展趋势，研究方法也由单一定性分析向定性与定量混合方法转变。（2）从研究内容看，分为乡村民宿概念、发展策略、服务特色、法律标准、空间布局等五大方面。[结论]从乡村民宿的研究方法、案例空间选择和理论体系构建方面进行了研究述评，并提出未来可以从独立的乡村民宿理论体系构建、乡村民宿产业跨越式创新发展模式、乡村民宿服务的创新研究等几个方面展开深入研究。

关键词：乡村民宿乡村振兴战略研究内容知网研究综述研究展望

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

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：