摘要：Introduction We all very accustomed to the emergency room of a crit-ical care unit,which is indeed captivated with accidental injury and internal bleeding,making the duo one of the highest causes of mortality to date.

摘要：Gripping devices help patients carry out everyday tasks and increase their ***,there seems to be a lack of bionic gripping technologies that can fully adapt to any possible shape,as the use of artificial fingers and predetermined grip settings limits the operating *** development of a more agile device,which is operated by a simple control paradigm,could greatly benefit *** electrorheological(ER)fluid system should be able to adapt to the shape of an object and then hold that *** aim of this study was to explore if a conceptual prototype of an ER system could hold a geometric shape when it is activated.A test rig was constructed with a moving part(set in different silicone oils)that could be displaced using a *** particles were dispersed in the silicone oils,and a field with a voltage of 4 kV mm?1 was generated to activate the *** results show that the developed system can support an increased force when activated and hold a simple geometric position without any noticeable *** outcome provides an initial proof of concept for a possible new(gravity-assisted)gripping approach using smart fluids,which could be developed with materials that are biocompatible and widely available.

摘要：Electrochemical CO2 reduction to chemicals or fuels presents one of the most promising strategies for managing the global carbon balance, which yet poses a significant challenge due to lack of efficient and durable electrocatalyst as well as the understanding of the CO2 reduction reaction(CO2RR) *** from the large surface area, high electrical conductivity, and tunable structure, carbon-based metal-free materials(CMs) have been extensively studied as cost-effective electrocatalysts for *** development of CMs with low cost, high activity and durability for CO2RR has been considered as one of the most active and competitive directions in electrochemistry and material *** this review article,some up-to-date strategies in improving the CO2RR performance on CMs are ***, the approaches to optimize the adsorption of CO2RR intermediates, such as tuning the physical and electronic structure are introduced, which can enhance the electrocatalytic activity of CMs ***, some design strategies are proposed to prepare CMs with high activity and selectivity for CO2RR.

摘要：Hunan Province is rich in red tourism resources, and many scenic spots in the region proudly echo the glory of China's revolutionary history. Publicity materials of red tourism in Hunan Province play the role of publicizing and promoting historical sites and places linked with China's revolutionary history. However, at present the C-E translation of publicity materials of red tourism in Hunan province is far from satisfaction. Reasonable application of eco-translatology in C-E translation of publicity materials of red tourism in Hunan Province will allow the translator to enjoy a much greater degree of flexibility in translating and produce appropriate translation which produce functionally the same effect on the target readers as the original on the readers.

摘要：本文就目前高职高专艺术设计专业课程体系教材中所面临的经典且实用理论较为匮乏、课程内容凝练不足、学科整合力度不够、实训环节较为薄弱等现状,提出以艺术设计专业教材的建设为例,在教材建设上要适度增加精辟理论指导,突出高职高专艺术类教材特质的实用性、操作性、先进性、整体性及创造性,并就建设中出现的相关注意问题提出了应对策略。

摘要：From 1980’s decade,the introduction of carbon composite materials in structural applications has been consistently increased in the successive generations of civil aircraft from Single Aisle to Middle-long Range to achieve a culminant point with more than 50%in structure weight in recent commercial civil *** evolution,done through successive iterations,has been possible by combining in the same time the improvement of intrinsic composite material performances and its transformation into prepreg production technologies together with the development of new manufacturing process for material lay-up automation at composite shop-floor manufacturer of aircraft composite *** challenges are still coming to continuously develop materials and technologies in order to pursue the production more cost-effective composite *** to higher aircraft production rate for single aisle,new challenges may force material and aircraft designers and producers to furthermore drive new products and processes introduction and new ways of transformation within in next decade of composite aircraft *** propose to illustrate these trends using past and recent developments and our return of experience from Hexcel on Civil Aircraft programs.

摘要：materials Studio／CASTEP的组合是一个先进的材料设计环境，具有三维可视的材料分子建模能力。它采用平面波赝势基组结合密度泛函理论，在高度整合的主从运算与分析环境架构下，提供亲和而功能强大的使用界面，是研究与设计材料物理性质的一个功能强大的工具。在教学过程中引入materials Studio计算模拟软件，对教学的知识点及基本原理进行操作、演示及计算，可使教学内容更形象、生动、丰富，知识点更易于被学生理解，从而提高教学效率；激发学生的学习兴趣，促进其专业技能和素质的培养。本文旨在探索教学方法的改进及创新，为固体物理及材料科学的学科建设进行有益的尝试。

摘要：随着可充电电池应用的广泛应用,人们对可充电电池的性能(质量比容量、倍率性能和循环稳定性)提出了更高的要求.设计合成具有微纳米结构的电极材料是提升可充电电池电学性能的一个重要研究方向,其中空心结构设计因其有效性引起研究人员的重视.目前空心结构的应用主要集中在负极材料上,相比之下具有空心结构的正极材料因其较难的形貌控制以及较低的体积比容量,研究相对较少.本文总结了具有空心结构的正极材料在可充电电池,主要是在锂离子电池和钠离子电池中的应用,分析讨论了此类正极材料研究中取得的成绩以及存在的问题和挑战.由于空心结构具有更多的反应位点、利于电解液的渗透以及能缓解充放电过程中的体积变化,空心结构化能明显改进下一代高比容量正极材料(比如富锂层型材料、钒基氧化物、硅酸盐等)的电学性能.这些材料往往表现出较低的电子电导率、离子扩散系数和较高的体积变化率.我们相信通过精确控制空心结构的空间结构、开发低成本可放大的合成策略,空心结构能为未来的高性能正极材料提供较为实用化的解决方案.

摘要：随着时代的进步,综合材料运用到陶瓷艺术之中,从而将陶瓷设计引入到一个新的领域。综合材料弥补了陶瓷设计中的不足,完善了陶瓷设计中所缺乏的视觉感受,丰富了陶瓷制品的种类,带动陶瓷设计现代化,为艺术家们提供了更多的情感表达。

摘要："二元协同材料"这一新概念,不同于传统的单一体相材料,是在材料的宏观表面或体相内建造二元协同纳米界面结构.该材料设计原理是,在介观尺度引入不同甚至完全相反理化性质的纳米微区,在某种条件下具有协同的相互作用,以致在宏观上呈现出超常规物性的材料.这一新原理的关键是找出这两种组分间的协同距离,该协同距离应该与物理或化学中的某一特征常数相关.这一设计原理可以拓展到材料科学的多个领域,用于指导制备各种新型功能材料.