Results 111 to 120 of about 71,602 (282)
Surface and Interface Control Of Palladium nanocrystals and Their Catalytic Properties [PDF]
, 2014 贵金属纳米催化剂因其广泛的应用前景，一直是人们研究的热点。而随着研究的深入，其表界面结构控制的重要性日益凸显。尽管近年对贵金属纳米催化剂的表界面控制已有不少研究，但在分子水平上理解相关表界面调控的机制研究还有待深入，仍然有很多空间。为此，本论文重点开展钯纳米晶体的表界面结构控制和催化性能方面的研究，主要研究结果如下： 第一章：先简要的介绍了贵金属催化剂的特征及应用，而后详细介绍了影响贵金属纳米催化剂性能的参数，如尺寸，组成，表界面结构等。其中特别强调了表界面调控的重要性，并就目前的研究进展做了综述 ...
代燕
core
Profiling Metacognitive Knowledge and Growth Mindset in EFL Vocabulary Learning
International Journal of Applied Linguistics, EarlyView.ABSTRACT Guided by the self‐regulated learning (SRL) framework, the present study investigates the associations between metacognitive knowledge and growth mindset in EFL (English as a Foreign Language) vocabulary learning, addressing a critical gap in the literature. While metacognitive knowledge, comprising person, task, and strategy dimensions, plays
Weili (Allen) Xing, Mark Feng Teng
wiley +1 more source
Gaoya dianqi, 2012 温度在线监测作为电力设备故障诊断的一个重要手段,如果能够用于GIS的状态监测中,将为GIS的正常运行提供进一步的保障。目前,国内外对GIS母线温度在线监测已经做了一些研究,但尚不能达到实用化程度。笔者对当前GIS母线温度在线监测的研究进展进行介绍,主要包括红外辐射探测技术以及红外热诊断技术两种测温手段,同时,对其需进一步探讨的问题进行了分析。由于GIS母线温度在线监测技术还处于研究阶段,为实现其实用化,相关技术还需要进一步完善。笔者对其今后的研究工作进行了总结和展望。
李璿, 汪本进, 王晓琪
doaj
Effects of metal film on transmission characteristics of single-dielectric-slab THz waveguide [PDF]
, 2016 The effects of a symmetrical metal film on the transmission characteristics of TM mode in the thicker single-dielectric-slab THz waveguide is analyzed theoretically.
Hong Su, SU +3 more
core
Learning Styles, Engagement and Anxiety in AI‐Mediated Writing: A Multimodal Feedback Study
International Journal of Applied Linguistics, EarlyView.ABSTRACT Artificial intelligence (AI) tools now permeate English academic writing. However, evidence on how feedback modalities align with student differences and with psychological mechanisms remains limited. Prior work often reduced learning styles to simple matches with delivery modes and treated learning engagement and writing anxiety as peripheral.
Yi Ren +3 more
wiley +1 more source
Study on Gene Cloning, Expression and Characterization of Stylicin and Invertebrate Lysozyme in Marsupenaeus japonicus [PDF]
, 2014 日本囊对虾(Musupenaeusjaponicus)是我国沿海重要养殖对虾品种，具有非常高的经济价值。近年来日本囊对虾养殖规模受病害影响停滞不前，尤其是白斑综合症病毒(WSSV)等病毒性对虾病对日本囊对虾养殖产业造成严重的经济损失。目前，对虾病毒病的预防和治疗的方法效果均十分有限，而滥用乱用药物易诱发水质污染和药物残留等严重问题。因此，尽快找到环保高效的治疗方法与策略，成为当前海水对虾养殖产业迫切需要解决的重要科学问题。抗菌肽(AMPs)是对虾抵御病原入侵的一类重要的非特异性免疫成分，其抗细菌、真菌 ...
刘洪涛
core
International Journal of Applied Linguistics, EarlyView.ABSTRACT This computational linguistic study analyzes 8743 Rednote posts to examine how sentiment, emotion, and content domain collectively shape social comparison dynamics on social media. We identify four key findings: (1) an emotional gradient, where upward comparison content exhibits the highest sentiment scores and downward comparison the lowest; (
Michelle Mingyue Gu +7 more
wiley +1 more source
Study on the interactions of typical PAHs and their metabolites with serum albumin and their controlling ways using cyclodextrins [PDF]
, 2016 血清白蛋白是血浆中含量最丰富的运输蛋白，对血液中许多内、外源物质具有广普的结合能力，具有重要的生理功能。多环芳烃（PolycyclicAromaticHydrocarbons，PAHs）及其代谢物可与血清白蛋白形成稳定的加合物，由此随血液循环转运分布至各组织器官，引起毒性效应。该结合过程也可对血清白蛋白的结构和功能产生不利影响。因此，深入研究PAHs及其代谢物与血清白蛋白的结合作用，探究PAHs对血清白蛋白结构和功能的影响及寻求该结合作用的调控方式对了解PAHs在生物体内的赋存状态、毒性强度及致毒机制 ...
张静
core
Synthesizing Empirical Research on Learner Metacognition in Second Language Writing
International Journal of Applied Linguistics, EarlyView.ABSTRACT Despite considerable research interest in learner metacognition in second language (L2) writing, there is not yet a review that synthesizes the existing empirical findings and discusses their implications. To fill the void, this systematic review synthesized 39 empirical studies on learner metacognition in L2 writing and examined their salient
Chen Li, Icy Lee, Zhicheng Mao
wiley +1 more source