Results 21 to 30 of about 273,203 (262)
Decomposing the gap in missed opportunities for vaccination between poor and non-poor in sub-Saharan Africa : a multicountry analyses [PDF]
, 2018 Understanding the gaps in MOV between poor and non-poor in sub-Saharan Africa (SSA) would enable an understanding of factors associated with interventions for improving immunization coverage to achieving universal childhood immunization.
Adamu, Abdu +9 more
core +1 more source
Dianci bileiqi, 2021 根据串补装置用金属氧化物限压器（MOV）的工作特点,提出适用于500 kV串补MOV泄漏电流监测系统架构,并研制了MOV泄漏电流监测装置。研究在不同电压下MOV单只和多只组合条件下的泄漏电流特性,研究结果表明:与单只MOV泄漏特性相比,多只MOV不同并联时泄漏电流和阻性电流成倍线性增加,阻性电流角度在保持在84°至85°之间。通过国内MOV监测系统的工程应用,获取MOV泄漏电流的现场运行数据,为今后串补装置的状态监测技术发展提供了借鉴。
李志远 +7 more
doaj
Frontiers in Plant Science, 2015 High relative air humidity (RH ≥ 85%) during growth leads to stomata malfunctioning, resulting in water stress when plants are transferred to conditions of high evaporative demand.
Dália R.A. Carvalho +7 more
doaj +1 more source
Investigation of Impulse Aging of Energy-Absorption Elements for Hybrid DC Circuit Breakers
Applied Sciences, 2023 The state of the energy-absorption branch MOV in the hybrid DC circuit breaker (DCCB) has a very important impact on the short fault breaking operation of the circuit breaker.
Xinyi Wang +6 more
doaj +1 more source
Systematic review on reducing missed opportunities for vaccinations in Latin America
Revista Panamericana de Salud Pública, 2022 Objectives. To estimate the prevalence of missed opportunities for vaccination (MOV) in Latin America and the effect of interventions targeting health systems, health workers, patients, and communities on MOV. Methods. Searches were conducted in MEDLINE,
Malavika Tampi +4 more
doaj +1 more source
BMJ Open, 2021 Objective Missed opportunities for vaccination (MOV) are a significant contributor to low vaccination coverage. To better understand the magnitude and underlying causes of MOV among children aged 0–23 months in Mozambique, we conducted an assessment and ...
Bvudzai Priscilla Magadzire +4 more
doaj +1 more source
Formal Compiler Implementation in a Logical Framework [PDF]
, 2003 The task of designing and implementing a compiler can be a difficult and error-prone process. In this paper, we present a new approach based on the use of higher-order abstract syntax and term rewriting in a logical framework. All program transformations,
Aydemir, Brian +3 more
core +7 more sources
Dianci bileiqi, 2023 金属氧化物限压器(MOV)是串联补偿装置电容器组重要的过电压保护设备。当限压器组中某一台MOV单元出现贯穿性击穿故障时，一旦超出MOV的压力释放能力，易造成MOV爆炸。为了验证MOV在实际电流工况下的可靠性，笔者根据国内串补采用的无垫块(A结构)和有垫块B结构)两种MOV结构，建立了瞬态热气流场等效计算模型。针对型式试验、实际故障和极端故障的3种电流工况下，MOV单元出现贯穿性击穿故障时，其内部的气体发热和扩散情况进行了仿真研究。研究表明：MOV压力释放过程中，MOV内部压强增大的同时 ...
刘羿辰 +7 more
doaj
PLoS ONE, 2021 BackgroundDespite efforts to improve childhood immunization coverage in Nigeria, coverage has remained below the national acceptable level. In December 2019, we conducted an assessment of Missed Opportunities for Vaccination (MOV) in Ondo State, in ...
Akinola Ayoola Fatiregun +11 more
doaj +1 more source
Assessment of MOV Deterioration under Energized Conditions
, 2020 Metal oxide varistors (MOVs) are widely used to protect electrical and electronic devices that are very vulnerable to surges due to the low insulation level of the equipment. MOVs deteriorate gradually due to manufacturing defects, mechanical and thermal
Sung-Wook Kim, N. Kim, G. Kil
semanticscholar +1 more source