Results 31 to 40 of about 753,851 (138)
Dianci bileiqi, 2019 当高层建筑结构遭遇直击雷时,其电气设备可能会遭到破坏,这是因为回击电流产生了雷电电磁场（LEMF）,而电磁场又在电气设备上感生出了感应电动势（LIV）。回击电流速度参数的变化会影响雷电通道内回击电流的幅值,因此回击速度改变对回击电流的影响在本文有详细介绍和分析。而本文测量研究发现:沿着通道的峰值电流的变化是取决于回击电流速度（RSV）变化,RSV波形以及在前100 m通道高度平均值,于是评估雷电电磁场和感应电压时都应该考虑这些因素。在评估感应电压和系统保护时,应考虑电流峰值的变化。
马洪雨 +2 more
doaj
Rhetorical Diffusion and Policy Latency: Tracing AIPAC Influence in US–Iran Relations (2010–2026)
Policy Studies Journal, Volume 54, Issue 3, August 2026.ABSTRACT How do domestic interest groups shape the transition from diplomatic agreements to kinetic warfare? This research article addresses the methodological stagnation in foreign policy analysis by introducing a computational text‐as‐data pipeline to systematically quantify lobbying influence.
Bülent Aras
wiley +1 more source
, 2022 以爆轰波组织燃烧的斜爆轰发动机由于具有燃烧速率快,放热效率高的特点,在高马赫数飞行上具有广泛的应用前景。虽然斜爆轰发动机已成功完成了多次地面风洞实验,但在真正投入使用前仍有许多问题亟待解决。其中之一是燃料的混合问题。由于爆轰燃烧属于预混燃烧,且爆轰波在斜爆轰发动机燃烧室的入口建立,因此,燃料通常需要在斜爆轰发动机的进气道内喷射。进气道内的高超声速来流对燃料的充分混合提出了严峻的挑战。针对该问题,本文通过数值模拟,采用SST湍流模型,分析了来流马赫数Ma_∞=8,射流间隙比L/d_j=8,射流总压0 ...
韩桂来, 王嘉麟
core +1 more source
Recovering Critical Elements From Wastewater for Battery Materials: A Review
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Driven by global carbon neutrality goals, the transition toward a circular economy and sustainable resource management has become increasingly imperative. Given the indispensable role of battery technologies in modern energy storage systems, strategic elements such as lithium (Li), cobalt (Co), and nickel (Ni)—identified by the European ...
Ting Lei +5 more
wiley +1 more source
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Bio‐inspired artificial vision systems have made significant progress, but most focus on photo‐receptors, neglecting the hardware implementation of the efficient downstream neural circuits for complex computations like motion detection. To overcome this bottleneck, we demonstrate a neuromorphic vision system that mimics Drosophila's motion ...
Xianyu Hu +4 more
wiley +1 more source
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Germanium is a critical dispersed metal, yet sustainable recovery from dilute solutions is limited by sorbents that are difficult to regenerate and operate in continuous mode. Here, we fabricate a regenerable 3D‐printed hydrogel monolith (3D‐ATO‐GS) by integrating hydroxyl‐rich amorphous TiO2 nanoparticles into an alginate/gelatin scaffold ...
Wenhuan Guo +6 more
wiley +1 more source
Ultrasound in Obstetrics &Gynecology, Volume 68, Issue 1, Page 88-98, July 2026.ABSTRACT Objective To identify prenatal predictors of tuberous sclerosis complex (TSC) in fetuses with one or more cardiac rhabdomyomas (CR), evaluate an integrated multimodal diagnostic workflow using fetal magnetic resonance imaging (MRI) and trio whole‐exome sequencing (trio‐WES) and characterize perinatal outcomes.
X. Cai +8 more
wiley +1 more source
Gaoya dianqi, 2022 为了研究集群电缆敷设方式、回路间距、回路数以及排列方式对交流集群电缆直流载流量的影响，以10 kV交流配电网中广泛使用的三芯交联聚乙烯（XLPE）电缆为例，通过有限元仿真软件建立集群电缆的温度场和流场耦合仿真模型，得到了直埋敷设、排管敷设和沟槽敷设下集群电缆以双极式直流拓扑结构运行时的直流载流量、温度分布和流场分布。结果表明：随着回路间距和回路数的增大，集群电缆载流量的变化速率逐渐减小。直埋敷设下集群电缆之间的热场相互作用最大，而沟槽敷设下集群电缆之间的热场相互作用最小 ...
王启隆 +3 more
doaj
Integrative Conservation, Volume 5, Issue 2, Page 192-204, June 2026.We developed an effective ex‐situ conservation approach for an endangered orchid species, Dendrobium sinominutiflorum. A compatible fungal strain Tulasnella sp. was obtained by using in‐situ seed baiting technique. The Symbiotic germination with Tulasnella sp. significantly promotes seed germination and seedling growth.
Han‐Xiao Huang +6 more
wiley +1 more source