Results 31 to 40 of about 12,267 (168)
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT The rapid advancement of 5G communication technology has intensified electromagnetic pollution, creating an urgent demand for flexible multifunctional fabrics with efficient electromagnetic interference (EMI) shielding performance. This study proposes a novel material‐stacked construction strategy to fabricate multifunctional MXene/cellulose ...
Zong‐Kai Yan +9 more
wiley +1 more source
The Research and Application of Concrete Admixture for Shield Segment [PDF]
, 2016 随着我国城市化水平的不断提高，城市交通拥堵问题日益突出，地铁的修建逐渐成为城市发展趋势。目前国内外运用最为广泛的地铁施工方法是盾构施工法，而盾构管片作为盾构施工的主要装配构件，其质量直接关系到隧道的整体质量和安全。目前国内最常用的盾构管片是预制混凝土管片，预制混凝土管片常采用聚羧酸系减水剂。国内常规的聚羧酸减水剂存在振捣时间较长、混凝土收面时间较长等问题，国外公司生产的早强型聚羧酸系减水剂性能良好，但是价格昂贵。因此，开发出性能优良、价格合理的早强型聚羧酸减水剂，具有重要的意义 ...
尹峻
core
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT To address the issues of aluminum (Al) powder agglomeration during combustion and low oxidizer decomposition efficiency in composite solid propellants, this study utilized in situ self‐assembly technology to prepare cobalt‐based hybrid‐coated modified Al powder (Al@CZ).
Chong Chen +11 more
wiley +1 more source
界面电荷注入与积聚行为对直流GIS/GIL绝缘子沿面电场的影响分析
Gaoya dianqi, 2021 气体绝缘组合电器(gas insulated switchgear,GIS)和气体绝缘金属封闭输电线路(gas insulated metalenclosed transmission line,GIL)运行电流大,设备内部存在明显的温度梯度分布,造成高压电极附近电荷的注入与迁移加剧,导致绝缘子内空间及表面电荷的积聚,畸变电场,容易诱发沿面闪络故障。为此文中建立了电—热耦合应力下直流盆式绝缘子内的电荷注入与积聚模型,研究了考虑电荷注入和迁移特性的绝缘子空间电荷及表面电荷积聚情况 ...
胡琦 +4 more
doaj
Information and Communication Technologies and Informal Scholarly Communication: A Review of the Social Oriented Research [PDF]
, 2009 This article reviews and analyzes findings from research on computer mediated informal scholarly communication. Ten empirical research papers, which show the effects and influences of information & communication technologies (ICTs), or the effects of ...
Lin, Chi-Shiou, Yuan, Da-Yu
core
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT MXenes have been widely investigated as microwave absorption (MA) materials because of their unique properties. This study introduces a terminal bond manipulation strategy to enhance charge transfer and polarization in Ti3C2Tx, optimizing its MA performance.
Xiang Fang +8 more
wiley +1 more source
Controllable Synthesis of Cellulose Esters by Homogeneous Transesterification and Its Application [PDF]
, 2017 随着石油、煤炭等不可再生资源的日益枯竭，为了满足社会经济可持续发展的需要，以纤维素生物质为原料制备高附加值化工品及燃料的研究逐渐成为人们研究的热点。本文以多种来源的纤维素为原料，以N，N-二甲基乙酰胺/氯化锂（DMAc/LiCl）为溶剂体系，建立一种温和快速均相酯交换可控制备纤维素酯的方法，改进了纤维素在DMAc/LiCl体系中的溶解过程，优化了酯交换反应制备工艺，分析了纤维素酯类产物特征，探索了一种SEC测定纤维素分子量的方法，为纤维素酯的后续研究及应用提供理论基础和依据。 研究微晶纤维素在DMAc ...
丁佳佳
core
Expression and Characterization of Xyloglucanase from Paenibacillus borealis and Its Application in the Production of Xylogluco-oligosaccharides from Apple Pomace [PDF]
Apple pomace (AP) is rich in xyloglucan, serves as a substrate to produce xylogluco-oligosaccharides with various functional activities. The hydrolysis of AP by novel xyloglucanases is conducive to the high-value utilization of AP. In this study, a novel
Hang YANG +5 more
core +1 more source
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Lightweight and lead‐free radiation shielding materials remain urgently needed. This work designed a fluorite high‐entropy oxide (FHEO) system through a combined computational–experimental route. Density functional theory based on special quasi‐random structures was used to identify thermodynamically stable fluorites from a wide compositional ...
Xiangjie Duan +9 more
wiley +1 more source
Shuitu Baochi Xuebao, 2023 研究根-土复合体土-水特征曲线与抗剪强度的关系,可为紫色土埂坎根-土复合体强化机理的揭示与埂坎稳定性的维持提供科学依据。选取三峡库区典型紫色土坡耕地埂坎草本植物根—土复合体为研究对象,结合Hyprop2土壤水分特征曲线测量仪、滤纸法与直剪试验,拟合土-水特征曲线,揭示基质吸力对根-土复合体抗剪强度的影响。结果表明:(1)根-土复合体土-水特征曲线明显分为边界效应区、过渡区与非饱和残余区,3种常用模型(B-C、VG、F-X)中F-X模型拟合该曲线效果最好,根-土复合体饱和含水率、进气吸力 ...
郑文娇 +4 more
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