Results 21 to 30 of about 1,017,875 (150)
ABSTRACT The use of Ti6Al4V alloy in dental implantation is constrained by its high elastic modulus and biological inertness, which lead to delayed osseointegration and a high failure risk. Additionally, its chemical incompatibility with hydroxyapatite (HA) impedes the development of stable bioactive composites.
Shangyong Zuo +8 more
wiley +1 more source
【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
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Inverse Thermal Softening Behavior in a High‐Entropy Alloy Under Various Strain Rates
ABSTRACT Although face‐centered cubic high‐entropy alloys (HEAs) have received extensive attention and in‐depth research, most existing studies focus on single temperature or strain rate conditions, lacking systematic investigations into deformation mechanisms under extreme thermomechanical coupling environments.
Zhi Wang +6 more
wiley +1 more source
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
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《高压电器》创刊于1958年11月,至今已整整二十五年了。《高压电器》的前身,是由沈阳高压开关厂和当时的西安开关整流器厂合办的作为全国高压开关行业技术情报刊物的《高压开关技术报导》。1959年6月,一机部高压电器研究所成立后,经编委会会议决定:《高压开关技术报导》改名为《高压电器 ...
《高压电器》编辑部
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Ultrasonic Vibration Assisted Laser Processing: A Hybrid Paradigm for Extreme Surface Enhancement
ABSTRACT Traditional laser processing techniques offer many advantages, but they often encounter limitations such as heat‐affected zones, recast layers, residual tensile stresses, and poor surface finish. The integration of ultrasonic vibration (UV) presents a promising hybrid approach to overcome these challenges by introducing beneficial effects like
Aziz Ul Hassan Mohsan +6 more
wiley +1 more source
ABSTRACT Balancing low iridium dosage and robust anodic stability remains a critical hurdle for practical proton exchange membrane water electrolysis (PEMWE). Although IrRuOx offers a cost‐effective alternative, current systems still suffer from the dual dilemma of excessive noble‐metal reliance and inadequate long‐term durability. Herein, we developed
Hang‐Xing Ren +10 more
wiley +1 more source
目的通过监测高血压合并冠心病老年患者24 h动态血压,分析相关参数变化的临床意义,为临床治疗提供诊断依据。方法将试验对象分为三组:高血压合并冠心病组,86例;单纯性高血压组,127例;正常对照组,83例。应用无创动态血压监测系统记录动态血压及相关参数,并作对照分析。结果高血压合并冠心病组收缩压和舒张压比单纯性高血压患者高 ...
周智, 吴燕华, 周航
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ABSTRACT Lung cancer remains a major cause of cancer‐related mortality worldwide, and non‐small cell lung cancer (NSCLC) accounts for the largest proportion of diagnosed lung cancer cases. Exosomal programmed death‐ligand 1 (PD‐L1) has attracted increasing attention as a potential liquid‐biopsy biomarker associated with tumor immune regulation; however,
Chen Su +6 more
wiley +1 more source
近年来,为了适应电力系统向超高压及特高压方向发展,地下变电站的发展,以及高压电器简化结构,提高技术经济指标和运行可靠性的要求,各国十分重视高压试验研究。其研究内容多偏重于以下几个方面:超高压电力系统中内过电压的研究;在操作过电压作用下绝缘特性的研究;1000仟伏以上交流高压输电及相应的高压电器绝缘结构的技术探索;在操作过电压作用下避雷器放电特性的研究;高压电力系统及共电器设备绝缘配合的研究 ...
史文科
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