Results 151 to 160 of about 28,669 (212)
Shiyou jixie, 2014 为满足俄罗斯油气田丛式井低温钻井作业的需求，研制了ZJ40/2250DBG轨道钻井装备。该钻井装备主要由轮轨式移运装置、底座、井架、钻井液净化系统、机泵组、控制系统以及井口工具等组成。整套装备和附属设备安装于交互式可续接的专用轨道上，通过装备自身液压动力驱动，按照设定的方向整体沿轨道滚动平移，实现作业区内丛式井的钻井作业。该装备利用工业网电动力，经交流变频驱动绞车、转盘、钻井泵和顶驱系统，其井架及底座均配套液压+机械式专用调平机构，确保钻机工作时井口对中。钻机适用于-45 ℃低温作业 ...
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Factors That Influenced Coping With COVID‐19 During the Pandemic in Botswana
World Medical &Health Policy, Volume 18, Issue 1, March 2026.ABSTRACT This paper forms part of the broader Global South study, Personal and Family Coping with COVID‐19 in the Global South, which examines psychosocial and behavioral responses to the COVID‐19 pandemic. In Sub‐Saharan Africa, the pandemic posed significant psychological, social, and economic challenges, with important implications for preparedness ...
Magen Mhaka‐Mutepfa +3 more
wiley +1 more source
Gaoya dianqi, 2017 高压隔离开关是电力系统中重要的电气设备之一,数量众多,操作故障率高,安装调试及维护工作量大。笔者在调研分析传统型高压隔离开关设计制造、安装调试及运行维护的基础上,对其机械传动系统和电气控制系统进行了集成优化,研制出了一种新型220 kV高压隔离开关。新型隔离开关仅配一个新型操作机构箱,即可完成主刀及接地刀的分合闸操作,电气闭锁和机械闭锁简单可靠,安装调试和维护检修工作量大为减少,全寿命周期成本显著降低。该成果适应于其他电压等级隔离开关,具有较好的工程推广应用价值。笔者立足于工程应用需求 ...
刘光华 +9 more
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[Mechanism of action and exogenous supplementation of vitamin D in Crohn's disease]. [PDF]
Zhongguo Dang Dai Er Ke Za Zhi, 2023 Xia Y, Zhou J, Zhao HM, You JY.
europepmc +1 more source
India's Health Diplomacy: Advancing Pharmaceutical and MedTech Leadership in the Global South
World Medical &Health Policy, Volume 18, Issue 1, March 2026.ABSTRACT Health diplomacy has become a pivotal aspect of India's engagement with the Global South, intertwining foreign policy, public health, and global collaboration to address disparities while pursuing strategic interests. India's pharmaceutical industry, which accounts for nearly 20% of the world's generics, has positioned the nation as the ...
Gaurav Chanderprakash Mittal +4 more
wiley +1 more source
[Mechanisms of pyroptosis in metabolic diseases]. [PDF]
Zhong Nan Da Xue Xue Bao Yi Xue BanChen R, Wang W.
europepmc +1 more source
Conservation Biology, Volume 40, Issue 1, February 2026.Abstract Exploring heat tolerance and acclimation capacity can provide an effective approach to evaluating species’ sensitivity to extremely high temperatures due to climate warming. Despite some work on amphibian and reptile thermophysiological adaptation, related questions remain. We reviewed the literature to provide a synthesis of worldwide data on
Zijian Sun +8 more
wiley +1 more source
[Mechanism of Eclipta prostrata L-Ligustrum lucidum Ait in the treatment of periodontitis]. [PDF]
Hua Xi Kou Qiang Yi Xue Za ZhiGuo M +5 more
europepmc +1 more source
Effects of organized guarding on mortality from human–elephant conflict in northeast India
Conservation Biology, Volume 40, Issue 1, February 2026.Abstract Human–elephant conflict (HEC) frequently results in human and elephant mortality, posing major social justice and conservation concerns across Asia and Africa. Although a variety of interventions have been introduced to mitigate HEC, rigorous evaluations of how they affect mortality are practically nonexistent.
Nitin Sekar +6 more
wiley +1 more source
[Mechanisms of spinal microglia and astrocytes in exercise-induced analgesia]. [PDF]
Zhong Nan Da Xue Xue Bao Yi Xue BanHu S, You H, Lei J.
europepmc +1 more source