Results 11 to 20 of about 296,967 (167)
Zhongshan Daxue xuebao. Yixue kexue ban, 1992 用E-PTA负染色和锇酸（O3 O4）处理普通透射电镜方法结合形态计量和体视学分析年青（3个月）和老年（27个月）SD大鼠海马CA1区分子层突触结构,结果显示衰老时海马CA1区突触形态结构发生了一系列退行性和代偿性变化:单位体积的突触数量（Nv）,突触连接带总面积（Sv）明显减少,突触前终末内突触囊泡、线粒体数亦明显减少。突触后膜致密物厚度变薄,而突触接触带的平均长度则代偿性增大。突触间隙宽度,突触前终末剖面积,突触后终末棘器数无明显改变 ...
doaj +1 more source
Integrative Conservation, Volume 2, Issue 4, Page 226-239, December 2023., 2023 Humans and wildlife share space in the Save Valley Conservancy; stakeholder matrix and engagement is therefore important to restore harmony and promote biodiversity in the study area. Abstract In southern Africa, human and wildlife interactions have significantly increased over the past decade, resulting in complex conservation conflicts. As humans and
Itai Dhliwayo +3 more
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Integrative Conservation, Volume 2, Issue 4, Page 165-175, December 2023., 2023 There is a lack of knowledge of which species and areas have a high risk of zoonotic disease spillover due to wildlife hunting and trade. We combined maps of hunting pressure, recent data sets on human‐shared pathogens, and trade volumes for 614 mammalian host species to map zoonotic disease risk from wildlife hunting and trade pantropically.
Jacqueline Choo +4 more
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Impacts of Human Development on Wildlife Use of Corridors in Botswana 人类开发对博茨瓦纳野生动物廊道利用的影响
Integrative Conservation, Volume 5, Issue 1, Page 164-171, March 2026.This study examined the effect of landscape‐scale human impact on wildlife in Botswana. We examined how species use wildlife corridors in two different human‐dominated landscapes. We identified differences in temporal overlap between wildlife and humans across both landscapes, which is fundamental to consider in both current and future conservation ...
Tempe S. F. Adams +3 more
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Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT The transformative potential of gallium nitride high electron mobility transistors (GaN HEMTs) in advancing carbon‐neutral power systems remains bottlenecked by contact resistance (Rc) at the metal–semiconductor (M‐S) interface, a critical determinant of switching losses and frequency response.
Ji‐Zhou Zhang +8 more
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Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT This study introduces novel nonequiatomic TiZrCoCrMoCux (x = 0, 5, 10; at%) medium‐entropy alloys (MEAx) tailored for orthopedic implants, synergistically combining the biocompatibility of Ti‐based alloys, the wear resistance of CoCrMo alloys, and the antibacterial/osteogenic attributes of Cu. The alloy's microstructure, mechanical properties,
Hang Yu +9 more
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, 2017 本发明公开了一种测试岩体结构面接触刚度的方法，包括步骤：(1)选取测试区域；(2)安装振动传感器；(3)打开采集仪使其处于采样状态；(4)在岩体结构面的一侧进行锤击，并通过调整锤击方向产生沿着振动传感器连线方向传播的纵波及横波；(5)通过采集仪进行记录；(6)计算纵波波速、横波波速、纵波通过结构面的耗时、横波通过结构面的耗时；(7)计算完整岩体的弹性模量及泊松比；(8)借助数值方法进行反演分析，建立与测试区域相似的数值模型；(9)在数值模型的一侧施加冲击载荷 ...
李世海, 乔继延, 郭汝坤, 冯春
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US Foreign Policy and the Gulf States: Changing Dynamics in a Multipolar World
World Affairs, Volume 188, Issue 4, Winter 2025.ABSTRACT This article focuses on US foreign policy toward the Gulf from Obama's Pivot to Asia to the initial period of the second Trump administration. It situates the role of the US within the broader context of the global energy transition and the Gulf states as geopolitical actors in a multipolar world order.
Steven Wright
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New Phytologist, Volume 247, Issue 5, Page 2086-2097, September 2025.Summary The importance of marine angiosperms, or seagrasses, as foundation species for marine coastal ecosystems is in marked contrast to their low species number of only 70 described taxa. Seagrass species tend to have very similar overall morphologies dictated by hydrodynamic forces of the ocean environment.
Xiaomei Zhang +14 more
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Joint Extraction Method for Spatial Relations in Chinese Geological Texts
Earth and Space Science, Volume 12, Issue 8, August 2025.Abstract Extracting spatial relations of geological entities is an important prerequisite for achieving natural language processing tasks such as geological knowledge question answering and semantic search, and is an important means to achieve structural reconstruction of unstructured geological data.
Chuan Chen +9 more
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