Results 31 to 40 of about 11,927 (158)
流延法制备高锂离子电导Li1.4Al0.4Ti1.6(PO4)3固态电解质及其环氧树脂改性
, 2017 以溶胶凝胶法合成的高纯Li1.4Al0.4Ti1.6（PO4）3（LATP）纳米晶体粉末为原料，通过流延法成膜，在950 ℃下煅烧5 h合成LATP固态电解质片；对其进行环氧树脂改性后，能量色散X射线光谱元素图像表明环氧树脂完全浸入LATP内部，可以有效防止水渗透.研究发现流延法合成的LATP固态电解质在25 ℃时电导率高达8.70× 10-4S· cm-1、活化能为0.36eV、相对密度为89.5%.经过环氧树脂改性后电导率仍高达3.35× 10-4S· cm-1、活化能为0.34eV、相对密度为93.
陈棋 +5 more
semanticscholar +1 more source
Rare Metals, EarlyView.ABSTRACT Harnessing solar energy for self‐heating presents an effective strategy to suppress surface ice formation. In this paper, we fabricated nano‐silver‐modified multilayer graphene sheets (Ag@MGs) that integrate photothermal and superhydrophobic properties for anti‐icing applications.
Yihan Zhang +7 more
wiley +1 more source
, 2019 本文介绍了高鸿钧课题组在物理所20年来的部分代表性工作.研究的主要方向为低维纳米功能材料的分子束外延可控制备、生长机制、物性调控及其在未来信息技术中的原理性应用.从材料的可控制备入手，结合第一性原理的理论计算，阐明材料生长机制和结构与物性的关系，进而实现物性调控和原理性应用.主要内容有：1）纳米尺度海马分形结构的形成及其生长机制；2）STM分辨率的提高及最高分辨Si（111）-77原子图像的获得；3）固体表面上功能分子的吸附、组装及其机制；4）稳定、重复、可逆的纳米尺度电导转变与超高密度信息存储；5 ...
黄立 +10 more
semanticscholar +1 more source
On the Damage Tolerance of Diffusion Bonded Titanium–Aluminum Phase Biomimetic Composites
Rare Metals, EarlyView.ABSTRACT The biomimetic design principles of natural structures involve the strategic integration of stiff and compliant phases to synergistically enhance strength and toughness. Its evolutionary refined natural armor, characterized by a specialized microarchitecture, enables superior damage tolerance.
Shuai Tong +10 more
wiley +1 more source
Rare Metals, EarlyView.ABSTRACT MCrAlX coatings are widely used as bond coats in thermal barrier coating systems to protect turbine blades from high‐temperature oxidation. However, their oxidation resistance is often restricted by uncontrolled microstructures, surface roughness, and aggregation of reactive elements (REs). In this study, high‐repetition‐rate femtosecond laser
Wei Qian +7 more
wiley +1 more source
聚L-乳酸/聚(天冬氨酸- co -乳酸)共混物的制备及其相容性研究
, 2009 采用氯仿，乙醇共沸溶液浇铸法制备了混合均匀的聚L-乳酸／聚（天冬氨酸-co-乳酸）共混物（PLLA，PAL）体系．研究了PLLA／PAL共混体系的热性能、结晶行为、形态结构和力学性能，评价了PLLA和PAL之间的相容性．结果表明，PAL对PLLA的结晶行为和热性能产生了较大的影响，共混物的结晶度较低，共混体系中部分PAL会进入PLLA球晶的片晶而导致PLLA球晶结构不完善，熔点降低．PAL的含量小于20％的PLLA／PAL共混物的拉伸强度和断裂延伸率均高于纯PLLA-PLLA和PAL分子链相互缠结 ...
姚军燕 +4 more
semanticscholar +1 more source
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Studies have shown that organisms may adjust metabolic rates in response to thermal variability, highlighting metabolic plasticity as a key adaptive mechanism. Understanding the extent of metabolic plasticity of an organism is key to predicting its adaptation to climate
Qian Hu +6 more
wiley +1 more source
Jianzhu Gangjiegou Jinzhan, 2012 目前,空心钢管混凝土结构被大量应用和推广,但对其抗震性能的研究却比较少,制约了其在实际工程中的进一步应用。对空心普通和再生钢管混凝土柱的抗震性能进行了试验与有限元研究,首先介绍了3根空心圆钢管混凝土柱在定轴力和水平反复荷载作用下的滞回性能试验,分析了不同混凝土和空心率对试件耗能能力及位移延性等抗震性能的影响,研究表明再生混凝土构件的抗震性能要差于相应普通混凝土,而空心率越大,构件的延性和耗能能力越小。其次,采用有限元软件ABAQUS对空心钢管混凝土压弯构件的荷载-位移骨架曲线进行了大量数值计算 ...
李卫秋, 查晓雄, 余敏
doaj
Conservation Biology, EarlyView.Abstract The design of experiments to investigate the combined effects of multiple stressors requires exposing target organisms to multiple combinations of stressor doses. Concurrent manipulation of stressors is often infeasible with wildlife, but long‐lasting health effects allow individual health to be used as an integrator of prior stressor exposure.
Enrico Pirotta +24 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2017 长QT间期综合征（LQTS）,是指心电图上QT间期延长,伴T波和（或）u波形态异常,临床表现为室性心律失常,晕厥和猝死的一组综合征。其病因包括先天性和获得性两个方面,获得性LQTS主要由各种药物引起。QT间期延长可能发展为室性心律失常如尖端扭转性室速（TdP）,继而发展为室颤甚至猝死。现代麻醉中不同麻醉用药可能诱发心脏复极时间延长,心电图上表现为QT间期延长 ...
吴楠, 马奔卉, 李艳辉, 麻海春
doaj