Results 31 to 40 of about 1,017,805 (150)
Zhongshan Daxue xuebao. Yixue kexue ban, 2019 【目的】评估门诊高血压患者不同血压控制水平间容量负荷的差异，探讨门诊高血压患者的临床因素对容量负荷的影响，分析门诊高血压患者临床基线特点及降压药物使用情况。【方法】在2017年7月至11月期间，纳入门诊高血压患者共514例。记录患者的临床指标，包括性别、年龄、身高、体质量、高血压年限、血压水平、高血压治疗方案及合并症情况。采用生物阻抗分析仪，检测细胞外液与身体总水比值（ECW/TBW），对人体容量负荷进行评估，全身ECW/TBW≥0.39定义为高容量负荷。分析各种临床因素对高血压患者容量负荷的影响 ...
罗艳婷 +3 more
doaj
Rare Metals, Volume 45, Issue 9, September 2026.ABSTRACT The escalating severity of global environmental pollution necessitates the development of sustainable and efficient adsorption materials. Nanocellulose (NC), sourced from the most abundant natural polymer on earth, has shown great potential in this field due to its renewability, biodegradability, and exceptional nanoscale properties.
Yaqian Yu +5 more
wiley +1 more source
, 2010 编者按语：力学研究所的刘曰武副研究员和中国石油勘探开发科学研究院廊坊分院合作，共同完成了塔里木盆地高压、超高压气藏动态描述技术的研究 ...
中国科学院老科技工作者协会工程力学分会
core +2 more sources
Rare Metals, Volume 45, Issue 9, September 2026.ABSTRACT In MAX‐phase‐derived metal–matrix composites, the M‐site element simultaneously governs carbide chemistry and matrix precipitate stability, yet it has traditionally been selected empirically rather than from a predictive criterion linking M‐site choice to carbide chemistry, matrix alloying, and L12 stability; moreover, the reaction pathway ...
Wei Yang +8 more
wiley +1 more source
Dianci bileiqi, 1985 作为高压、超高压输变电设备和输电线路外绝缘至关重要的高压绝缘子和高压电器配套用的电瓷产品,近年来国外的发展势头很大,各种特高压和超高压等级的高档电瓷产品,纷纷投入市场。
靳宝丰
doaj
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT The regeneration of osteoporotic bone defects is severely hampered by compromised endogenous healing capacity, demanding advanced strategies that actively orchestrate pro‐osteogenic microenvironments. Here, we report an integrated, self‐powered osteo‐regenerative system that uniquely leverages a dual ultrasound‐responsive piezoelectric ...
Bing Tan +6 more
wiley +1 more source
Gaoya dianqi, 2017 为了提高特高压电容式电压互感器的瞬态性能,分析其在较宽频域内的分压特性,以某公司生产的1 000 kV特高压电容分压器为实验对象,进行了特高压电容分压器阻抗的测量,建立了特高压电容分压器的宽频等效电路模型。首先,测量特高压电容分压器的阻抗;其次,基于测量得到的数据结合矢量匹配法和电路综合理论,建立了特高压电容分压器的宽频等效电路模型,并利用模式搜索算法对等效电路进行无源修正;最后,利用所建立的模型,分析特高压电容分压器在不同频率下的分压特性,为合理设置均压装置以及改善特高压的制造工艺提供理论依据。
王平, 张广勇, 李慧奇, 李璿
doaj
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT To address critical issues in lithium–sulfur batteries, such as slow polysulfide conversion kinetics and shuttle effects, we designed and synthesized a high‐performance nanoalloy catalyst through a defect reconstruction strategy, aiming to enhance the electrochemical performance of batteries.
Zhijun Zhao +10 more
wiley +1 more source
Gaoya dianqi, 2020 作为特高压交流变电站内的主要噪声源之一,运行中的特高压变压器的本体噪声、冷却装置噪声及环境噪声等相互混叠,给准确分析特高压变压器的噪声特性带来不利影响。文中依据某1 000 kV交流变电站特高压变压器的噪声测试结果,通过设计阻带滤波器和合理选取稀疏自动编码器的关键参数如隐层节点数、稀疏参数等,提出了一种综合阻带滤波器和稀疏自动编码器的特高压变压器本体噪声提取方法,对比分析了特高压变压器噪声信号分离前后的频谱瀑布图。结果表明:特高压变压器的本体噪声主要集中在100、200、300 Hz分量 ...
田昊洋 +5 more
doaj
Alloy‐Type Anode Materials for Sodium‐Ion Batteries: From Single Metals to MultiComponent Alloys
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Sodium‐ion batteries (SIBs) are widely regarded as a promising alternative to lithium‐ion batteries due to their abundant sodium resources, broad geographical distribution, and low cost, rendering them particularly attractive for large‐scale energy storage applications.
Zicheng Yin +12 more
wiley +1 more source