Results 31 to 40 of about 25,615 (125)
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
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
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
Ultra-high Pressure Processing Could Be Used to Alter Properties of Emulsion-type Sausages with Reduced-fat(应用超高压技术改善降脂乳化肠的滴水损失) [PDF]
Effects of high pressure processing (HPP), including high pressure and high pressure treatment time, on the drip loss of sausages with reduced-fat were investigated.
YANG Huijuan(杨慧娟) +2 more
doaj +1 more source
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
《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
doaj
ABSTRACT Photocatalytic hydrogen peroxide (H2O2) production from water and oxygen driven by solar energy represents a highly promising green and sustainable strategy. Herein, lignin‐derived carbon quantum dots (LCDs) were strategically introduced at the heterojunction between a Bi‐based metal organic framework (Bi‐MOF) and ZnIn2S4 (ZIS).
Wanpeng Sun +8 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
doaj
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
目的 探讨肾移植患者发生全麻苏醒期高血压危象的影响因素。方法 回顾性分析2019年9月—2021年9月期间吉林大学第一医院进行的98例急诊同种异体肾移植手术的临床资料。根据麻醉苏醒期的血压分为高血压危象组(49例)和血压稳定组(49例),对比两组的临床资料并分析肾移植患者发生全麻苏醒期高血压危象的影响因素。结果 高血压危象组与血压稳定组相比,前者平均年龄较大、BMI值较高、受体存在原发性高血压的比例较大、高血压脑出血供肾的比例较大、T1和T2时的收缩压较高 ...
段文燕 +3 more
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