Results 21 to 30 of about 1,117,265 (213)
工程技术与管理, 2020 特高压电力指的是±800kV 的直流电和1000kV 以上的交流电的电压等级。特高压在世界范围内都是最为先进的输电技术，其一般应用于长距离的电力输送当中，具有容量大、效率高、损耗低等诸多优势。与传统的电力工程项目不同，特高压电力工程项目对于施工质量要求较高，且施工过程中存在诸多风险因素，为确保特高压电力项目可以在规定时间范围内保质保量地完成，必须始终重视安全控制，并做好特高压电力工程的现场监理工作。
勇 王
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Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Additive manufacturing, commonly referred to as three‐dimensional (3D) printing, provides the geometric freedom and multi‐material integration needed to build soft medical robots for minimally invasive interventions, prosthetics, and rehabilitation.
Yao Wang +5 more
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Ultrasound in Obstetrics &Gynecology, Volume 67, Issue 5, Page 613-622, May 2026.ABSTRACT Objectives To evaluate the effect of aspirin on gestational age at delivery due to preterm pre‐eclampsia (PE) in women with chronic hypertension (CH), to assess the predictive performance of the Fetal Medicine Foundation (FMF) first‐trimester competing‐risks model for preterm PE in this high‐risk group and to evaluate how parity, previous PE ...
D. L. Rolnik +23 more
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水电科技, 2020 文章为针对特高压直流输电工程中的阀厅火灾报警的设计进行研究，随着技术的不断进步及革新，阀厅火灾报警的设计也将日渐成熟，文章作于±800kV酒泉-湖南特高压直流输电工程建设期间，文中绝大多数设计都已应用于本工程中。
虎 戴
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Longitudinal maternal hemodynamics in high‐risk pregnancies with different subtypes of pre‐eclampsia
Ultrasound in Obstetrics &Gynecology, Volume 67, Issue 5, Page 623-634, May 2026.ABSTRACT Objective To evaluate maternal cardiac adaptation during pregnancy by comparing longitudinal hemodynamic profiles between women identified as high risk for preterm pre‐eclampsia (PE) who subsequently developed preterm PE, term PE or remained unaffected, as well as low‐risk women.
J. Lin +10 more
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电力工程技术创新, 2020 论文将对特高压变电站土建工程地基处理方法以及抗震施工技术进行分析阐述，以期能够为业内人士提供理论参考。
俊若 孙
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Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Photocatalytic hydrogen evolution technology is a crucial approach to achieve efficient solar energy conversion and green hydrogen production. However, traditional semiconductor photocatalysts often face issues such as weak visible‐light response, high photogenerated charge carrier recombination, and poor structural stability, severely ...
Longtao Guo +8 more
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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 4, April 2026.ABSTRACT Piezocatalytic technology utilizes mechanical strain or stress‐induced piezoelectric phenomena to produce robust internal electric fields, markedly improving the separation efficiency of e−‐h+ pairs. This method has emerged as a focal point in catalysis by removing reliance on conventional light or electrical energy via its mechanical‐to ...
Yue Zhou +5 more
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水电水利, 2020 随着我国电力建设的蓬勃发展,特高压输电网的逐步形成,大截面导线因其输送功率大、线损小等优点而被广泛采用,在灵绍特高压直流工程首次应用1250平方毫米大截面导线工程后,酒湖、晋北、锡泰、上山、扎青等工程相继应用,大截面导线与普通导线相比,其导线截面积更大,导线绞制层数更多,导线铝钢比更大,压接铝管外径更大,铝管的实际压接长度更长,更易出现导线散股、起灯笼、握着力及对边距超标等问题,作为锡泰工程参建单位,在此与大家分享下大截面导线压接经验。
志晓 张
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