Results 41 to 50 of about 29,642 (234)

A Study on the Transmitting Mechanism of Financial Risks between Chinese A-share Market and Other Major Asian Stock Markets [PDF]

open access: yes, 2016
随着经济全球化和亚洲一体化进程的深入,中国与亚洲各个国家和地区的合作取得重大突破,中国在亚洲金融市场的话语权不断提高,承担的责任也越来越大,面临来自亚洲的系统性风险越来越不容忽视。深入研究中国A股与亚洲其他主要股市金融风险的传导机制,对中国的经济发展与金融安全以及跨境资产配置都具有非常重要的理论与现实意义。 为了揭示中国A股与亚洲其他主要股市的风险传导机制,本文从风险传导的“外在”和“内在”两个视角进行研究。在“风险传导的外在表现”方面,本文从整体和局部两个层面进行分析。整体层面上 ...
林琛
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Gravity‐Driven Inclination Sensor Based on Liquid Metal Interface Migration in Anisotropic Microchannels for Information Transmission and Continuous Surface Topography Scanning

open access: yesRare Metals, EarlyView.
ABSTRACT With the continuous advancement of materials science and technology, the rare metal gallium has increasingly emerged as a promising alternative to the toxic metal mercury. Although existing research has predominantly focused on the high electrical conductivity and excellent deformability of liquid metal (LM), its intrinsic fluidic property ...
Feifan Guo   +6 more
wiley   +1 more source

Effect of Benzalkonium Chloride on Corneal Epithelial Barrier Function and Possible Mechanisms of Benzalkonium Chloride Inhibiting Corneal Endothelial Gap Junction Intercellular Communication [PDF]

open access: yes, 2015
第一部分:局部应用前列腺素类药物对兔角膜上皮细胞屏障功能的影响 目的:苯扎氯铵(BAK)是滴眼液中最常用的防腐剂之一,大量的临床研究发现,局部长期使用含BAK的眼部制剂会出现很多眼部不适症状。含BAK的前列腺素类药物是治疗开角性青光眼的一线药物,临床上患者往往需要长期使用,易导致眼睛干涩,结膜充血等等,然而其作用机制还不是非常清楚。紧密连接与粘着连接等构成了角膜上皮抵御外界病原微生物入侵的第一道生理屏障,对角膜正常生理功能的维持具有非常重要的作用 ...
张振豪
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MXene‐Based Electromagnetic Attenuation Materials in Microwave and Terahertz Bands

open access: yesRare Metals, EarlyView.
ABSTRACT MXenes exhibit considerable potential for developing high‐performance electromagnetic (EM) shielding and absorption materials operating across microwave and terahertz frequencies, due to their tunable surface chemistry and exceptional charge carrier transport properties.
Guozheng Zhang   +9 more
wiley   +1 more source

Toxicity of BaP exposure during embryonic stage in zebrafish: the mechanisms involved [PDF]

open access: yes, 2016
多环芳烃(PolycyclicAromaticHydrocarbon,PAH)是环境中一类分布广泛的持久性有机污染物。苯并(a)芘(Benzo(a)pyrene,BaP)作为代表性的PAH具有包括神经毒性和生殖毒性在内的多种毒性。截至目前,关于BaP神经毒性的研究大多集中于高浓度或短期的暴露实验,而环境水平浓度下、长期的BaP暴露是否能引起同样的神经毒性则研究得较少;此外,胚胎时期低浓度BaP暴露对成年阶段的神经毒性、生殖毒性效应及其机制研究更为少见。因此本研究以斑马鱼为模式动物,分别进行环境水平浓度 ...
高东旭
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Interfacial Dipole Engineering With Taurine‐Modified SnO2 Electron Transport Layer for Efficient and Stable Perovskite Solar Cells

open access: yesRare Metals, EarlyView.
ABSTRACT Organic‐inorganic metal halide perovskite solar cells (PSCs) are promising for photovoltaics due to their excellent optoelectronic properties. However, achieving high efficiency and stability remains challenging, mainly due to defects and energy losses at the electron transport layer (ETL)/perovskite interface.
Jiahui Jin   +8 more
wiley   +1 more source

输电线路带电紧固螺栓机器人的研制

open access: yesGaoya dianqi, 2017
近年来,人工带电作业的局限性日渐突出,研究代替人工作业的机器人技术已经成为电力检修智能化研究的重要分支。文中对作业对象和任务进行了分析;介绍了机器人的机体构造,并基于运动学对带电作业机器人动作进行规划;阐述了该机器人系统的控制组成和软件设计。成功研制的输电线路带电紧固螺栓机器人主要由非越障移动平台、作业机械手和控制基站3部分组成,采用人机交互控制,具有视觉反馈和力反馈系统。试验和现场应用表明:紧固螺栓作业机器人运行可靠、平稳,控制方便,满足输电线路带电作业要求,能替代人工完成螺栓紧固作业 ...
李稳   +6 more
doaj  

Effects of hexabromocyclododecane (HBCD) on cardiac development in zebrafish embryos (Danio rerio): the mechanisms involved [PDF]

open access: yes, 2015
六溴环十二烷(1,2,5,6,9,10-Hexabromocyclododecane,HBCD)是被运用最广泛的阻燃剂之一,在全球的用量仅次于四溴双酚A和多溴联苯醚。HBCD具有持久性、生物累积性和生物放大效应,因而被定义为持久性有机污染物(persistentorganicpollutants,POPs)。已有研究表明HBCD具有发育毒性、神经毒性、内分泌毒性和生殖毒性,但对心脏发育毒性的研究十分有限,尤其缺乏对心脏发育毒性机制的研究。本研究以斑马鱼和H9C2细胞系为实验模型,采用低浓度HBCD(0 ...
吴美芳
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White‐Light Flexible Crystal With 180° Folding Induced by Halogen‐Bond Network in Organic‐Inorganic Hybrid Perovskite

open access: yesRare Metals, EarlyView.
ABSTRACT Organic‐inorganic hybrid perovskites (OIHPs) with white‐light emission have significant potential in solid‐state lighting and display due to the designable structure and excellent luminescent properties. However, OIHPs are prone to damage during bending due to the brittleness of crystals, which limits their application in the field of flexible
Jinyu Xu   +8 more
wiley   +1 more source

Study on the Legal Mechanism of the Injury Insurance for Migrant Workers in our Construction Industry [PDF]

open access: yes, 2016
随着我国经济发展水平的提高,社会保障体系渐渐引起国人的重视。工伤保险制度作为社会保障体系的重要组成部分,近年来逐渐成为社会的热点问题。自2004年《工伤保险条例》颁布以来,已经历了十年,我国的工伤保险制度也在逐年的完善之中,但是,建筑行业农民工的工伤保险状况却不尽人意,工伤保险参保率低是影响农民工工伤权益无法得到保障的关键所在。开展建筑行业农民工的工伤保险法律机制研究,对于保障建筑行业农民工工伤权益、构建和谐社会,具有重要意义。本文从我国建筑行业农民工工伤保险状况及存在的一系列问题入手 ...
杜雪芳
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