Gaoya dianqi, 2009 笔者主要以贵广二回直流工程为例,首先介绍了大地回线和金属回线的转换原理及其过程,其次介绍了在调试和运行过程中导致大地回线和金属回线转换不成功的运行实例,然后分析了直流保护逻辑存在的缺陷所导致的金属回线向大地回线转换时MRTB、MRS频繁分合的情况。笔者就这一情况提出了相应的保护逻辑修改方法,并发现保护逻辑经修改后,金属回线/大地回线转换正常,在系统调试和实际运行中不再出现MRTB、MRS频繁分合的情况。
冯鸫, 宋天奇, 杨洁民, 张楠
doaj
Review article. Migration as a social determinant of the increased active TB and MDRTB incidents [PDF]
, 2015 Background: Ukraine and R. Moldova report the biggest incidence of tuberculosis and the highest rate of migrants among European Region countries. For an average 1 bilion migrants, for whose this process - migration, is an effectively and immediately tool
Lesnic, E.V. +3 more
core
Penerapan Sensor Accelerometer untuk Membandingkan Gempa Data Bmkg dan Google Earthquake pada Perangkat Smartphone Android [PDF]
, 2014 The earthquake that occurred around the world, generally always cause building damage and casualties. The number of fatalities occurred due to the lack of early notification and earthquakes happen very quickly.
Irawaty, M. (Mardiana) +1 more
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Dianci bileiqi, 2020 在换流站金属转换开关（MRTB）转换操作的过程中,并联的避雷器组在开关动作后需要快速吸收大量能量。但是多柱并联结构的避雷器普遍存在氧化锌电阻片能量吸收不均的问题,在长期运行多次动作后以及环境因素影响下,避雷器组局部伏安特性降低会使较小阻抗的单柱氧化锌承受更大能量,吸收能量超出其热容量时会发生热崩溃导致击穿故障。近几年多次发生由于避雷器组损坏而导致金属转换开关转换失败的事故。为了解决避雷器故障的问题,本文以±660 kV宁东换流站为例,通过理论计算以及仿真分析提出金属转换开关避雷器参数要求 ...
刘志远 +4 more
doaj
Should We Expect Government Policy to Be Pareto Efficient?: The Consequences of an Arrow-Debreu Economy with Violable Property Rights [PDF]
To address the question, "Should we expect government policy to be efficient?" at its roots, I modify the well-known Arrow-Debreu private ownership economy, allowing property rights to be violable.
Bullock, David S.
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Клиническая эффективность селенита натрия в лечении больных туберкулезом с аутоиммунным тиреоидитом. [PDF]
, 2021 Eficacitatea clinică a selenitei de sodiu în tratamentul pacienților cu tuberculoză cu tiroidită autoimună.Клиническая эффективность селенита натрия в лечении больных туберкулезом с аутоиммунным ...
Matvyeyeva, Svetlana, Shevchenko, Olga
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Determinants of Biological Half-Lives and Terminal Slopes in Physiologically Based Pharmacokinetic Systems: Assessment of Limiting Conditions. [PDF]
AAPS J, 2022 Jeong YS, Jusko WJ.
europepmc +1 more source
Gaoya dianqi, 2010 笔者着重从高压直流输电换流站用直流断路器的功能要求、主要性能、基本构成、开断原理及试验技术等方面进行探讨,分析了直流断路器和交流断路器在电流转换、环境耐受和开断性能等方面的区别,给出了直流断路器转换电流的计算公式,表明合理选择直流断路器绝缘件的爬电比距对于提高运行水平非常重要,且开断直流电流必须创造过零点。另外,还阐述了直流断路器与交流断路器有主要区别的性能试验,供中国高压直流断路器的研制者参考。
王帮田
doaj
Bulletin of Faculty of Physical TherapyBackground Adoption of tele-rehabilitation among physiotherapists in developed countries has risen exponentially to complement conventional physical contact physiotherapy.
Marufat Oluyemisi Odetunde +3 more
doaj +1 more source
Comparative diagnostic accuracy of multiparametric magnetic resonance imaging-ultrasound fusion-guided biopsy <i>versus</i> systematic biopsy for clinically significant prostate cancer. [PDF]
PeerJ, 2023 Fang JH +5 more
europepmc +1 more source