Results 11 to 20 of about 254,371 (152)
Infant Mental Health Journal: Infancy and Early Childhood, Volume 42, Issue 6, Page 839-850, November/December 2021., 2021 Abstract Children growing up in families experiencing socioeconomic disadvantage (SED) are at greater risk for deficits in attachment and stress regulation as compared to peers in families with more socioeconomic resources. The present study hypothesized that care providers in out‐of‐home care might help these children to compensate.
Tina Eckstein‐Madry +2 more
wiley +1 more source
Gaoya dianqi, 2022 环境温度变化对液压操动机构的机械特性(含缓冲特性)影响较大，特别是温度较低的运行环境，甚至会影响到产品的可靠运行。文中通过液压弹簧操动机构仿真建模，对其机械特性进行了仿真分析，研究了液压弹簧操动机构在不同温度下的机械特性(含缓冲特性)，重点对低温工况下的低温特性进行了分析和试验研究，为液压弹簧操动机构的优化设计以及运维提供了依据。
梁传涛, 贾丽丽
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Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Sodium metal batteries (SMBs) are regarded as promising candidates for next‐generation energy storage systems owing to their high theoretical energy density and low cost. However, their practical development is hindered by the instability of the electrode–electrolyte interphase (EEI), particularly under high‐voltage operation.
Xingyu Yang +10 more
wiley +1 more source
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT With the continuous advancement of materials science and technology, the rare metal gallium has increasingly emerged as a promising alternative to the toxic metal mercury. Although existing research has predominantly focused on the high electrical conductivity and excellent deformability of liquid metal (LM), its intrinsic fluidic property ...
Feifan Guo +6 more
wiley +1 more source
Postnatal outcome following fetal aortic valvuloplasty for critical aortic stenosis
Ultrasound in Obstetrics &Gynecology, Volume 64, Issue 3, Page 339-347, September 2024.ABSTRACT Objective To report our experience of fetal aortic valvuloplasty (FAV) for critical aortic stenosis (AS), with a focus on the postnatal evolution of the patients. Methods This was a retrospective study including all fetuses with critical AS which underwent FAV in a single center between January 2011 and June 2022.
R. Corroenne +14 more
wiley +1 more source
Gaoya dianqi, 1985 液压操动机构中由贮压筒活塞杆驱动的微动开关,是液压操动机构的压力控制元件,它的动作是否稳定,直接影响开关运行的可靠性。据统计,由于微动开关动作失灵而造成液压机构事故或异常者,约占整个机构故障的百分之三十左右 ...
魏本纪
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Gaoya dianqi, 1993 CY3型液压机构依靠油泵机组的自启动为液压系统补充油压至额定值。液压机构在正常运行时,经常会出现不能自启动补压和补压后不自动停泵等故障,影响了机构的可靠运行。几年来,笔者对机构补压控制回路的故障处理,积累了一些经验,现介绍如下。
承亮
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, 2018 本实用新型属于水下液压机械手领域，具体地说是一种水下液压机械手叶片式摆动关节结构，可应用于海洋开发或水下作业，机械臂底座固连于摆动缸输出轴上，机械臂安装在机械臂底座上，液压油通过管接头和内部通油轴将动力液压油输送给叶片式摆动缸组件和后续的关节驱动器，实现关节驱动和内部通油；关节装有内置全海深接触式角度传感器，满足深海作业的需求。本实用新型具有结构紧凑、质量轻、体积小、负载能力强、转角范围大、故障率低 ...
张竺英 +4 more
core +1 more source
Gaoya dianqi, 1975 液压机构具有操作力大、灵敏度高、噪音小,结构紧凑、运动件质量小、振动少、维护简单、不易受到周围环境的影响,不用空气压缩机等优点。日本川畸工厂为了取代原来操作压气式SF6断路器的气动机构,使单压式灭弧室结构能用于更高电压,最近试制了一种新的液压机构。这种机构与以往国外已出现的液压机构相比较,具有如下的特点。
绪言, 黄逸详
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Gaoya dianqi, 2009 针对液压弹簧机构中电磁液压阀存在的问题,设计了一种新型液压阀-永磁液压阀,给出永磁液压阀的结构并阐明其工作原理,对用于液压阀上的永磁机构进行设计及对永磁液压阀进行特性分析。最后通过以上分析,设计出满足工程需要的永磁液压阀。
田阳, 林莘, 徐建源, 马跃乾
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