Results 51 to 60 of about 1,217 (166)
Engaging youth in biodiversity education through visual narrative
Conservation Biology, Volume 38, Issue 6, December 2024.Abstract Engaging youth in early and sustained conservation education has important implications for promoting positive attitudes and behaviors in those who will become the future of conservation and management. Toward this goal, visual narratives (comic books, graphic novels) are an increasingly popular method used by conservation scientists to ...
Kyra Ricci +3 more
wiley +1 more source
Jianzhu Gangjiegou Jinzhan, 2020 T形件作为半刚性钢框架梁柱节点连接的重要组件,其初始刚度对节点刚性的影响至关重要。目前,尚缺乏对圆钢管混凝土柱高强单边螺栓T形件初始刚度计算的研究。采用欧洲规范EN 1993-1-8中的组件法,以圆钢管混凝土柱高强单边螺栓T形件为对象,通过简化力学模型,分别给出了弧形端板的抗弯刚度、圆形柱翼缘壁的抗弯刚度、螺栓的抗拉刚度以及锚固钢筋的抗拔刚度计算公式。利用有限元软件ABAQUS,通过数值分析确定了重要影响参数,给出了可用于计算的系数曲线。提出了圆钢管混凝土柱高强单边螺栓T形件的初始刚度计算方法 ...
王静峰 +4 more
doaj
Studies on Helicoidal Behavior of Cholesteric Liquid Crystals for Aroma-modified Chitosan Derivatives [PDF]
, 2002 摘要：通过对壳聚糖分子进行选择性的化学修饰，制备出可溶解于DMSO、DMF、氯仿、四氢呋喃等常用有机溶剂的含芳基壳聚糖衍生物–––N－邻苯二甲酰化壳聚糖(PhthCS)和N,O－苄基化壳聚糖(N,O-PheCS)。 研究了PhthCS溶致胆甾液晶的热致相转变，发现当浓度超过46％时，体系中胆甾液晶相与凝胶相共存，凝胶化发生在液晶相形成之后。绘制出体系随浓度、温度变化的相图。在此体系中，溶胶–––凝胶相转变温度Tsol-gel和液晶各向同性转变温度Taniso-iso均随浓度的提高（从46％到55 ...
吴玉松
core
Structural Characterization of a Water-Soluble Polysaccharide from Lycium ruthenicum Murr. Fruits and Its Protective Effect on Ethanol-Induced Damage in GES-1 Cells [PDF]
Lycium ruthenicum Murr. polysaccharide (LRMP) was obtained by hot water extraction, its structural parameters such as monosaccharide composition, glycosidic linkages and chain conformation were analyzed, and its protective effect on ethanol ...
QIAN Rong, AN Jiaxin, XU Xiaoqi, ZHANG Tao, CHEN Aijun, LI Sha, XU Hong
core +1 more source
评论性翻译：关于1型糖尿病的临床实践指南（235-275页） [PDF]
, 2022 Este trabajo se basa en una traducción comentada al chino occidental del texto médico Guía de práctica clínica sobre la diabetes de tipo 1. Este texto médico describe sistemáticamente la evaluación y el tratamiento de las complicaciones asociadas a la ...
He, Mengjie
core
Conservation Biology, Volume 38, Issue 6, December 2024.Abstract Conservation scientists work in diverse settings, sometimes requiring them to exist in spaces where they do not feel safe, included, or accepted. This is often the case for the LGBTQIA+ (lesbian, gay, bisexual, transgender, queer, questioning, intersex, asexual, and others) community, which is frequently marginalized in conservation spaces. We
Amy C. Collins +4 more
wiley +1 more source
Jianzhu Gangjiegou Jinzhan, 2012 为了研究混凝土翼板外伸锚固的梁柱端板连接半刚性组合边节点力学性能,设计了3个足尺试件,其中两个混凝土翼板外伸150mm,厚度分别为140mm和200mm;另外一个为混凝土翼板未外伸的对比试件。采用柱顶水平位移控制低周循环加载试验,分析了锚固对该半刚性组合边节点力学性能的影响。结果表明,混凝土翼板外伸锚固（尤其是外伸锚固部分加厚）能够提高该半刚性组合边节点的稳定性及其抗震能力。因此,在实际施工中,应该尽可能锚固。
黄兴, 叶志明, 石文龙
doaj
, 1997 溶剂对三种纤维素衍生物液晶临界浓度的影响董炎明蔡青松袁清（厦门大学化学系厦门３６１００５）临界浓度（Ｃ＊ｐ）是溶致液晶在一定温度下刚能形成液晶相的最低浓度．影响Ｃ＊ｐ因素可以从体系中高分子和溶剂两个方面来考虑．关于高分子，Ｆｌｏｒｙ已阐明链刚性越大则..
董炎明, 蔡青松, 袁清
core
Conservation Biology, Volume 38, Issue 5, October 2024.Abstract Managing invasive species is crucial to mitigate their negative impacts on ecosystems, yet conflicts may arise when their social benefits are disregarded. Human pressure on the endemic‐rich forests of São Tomé has been high since the island was discovered by the Portuguese in the 15th century, and numerous species have been introduced.
Martina Panisi +7 more
wiley +1 more source
Jianzhu Gangjiegou Jinzhan, 2010 传统的设计和分析都将框架的梁柱节点处理成理想的刚接或铰接。然而,实际工程中的连接一般很难达到这两种理想状态,大部分连接的受力性能介于这两者之间,为半刚性连接。在组合框架中,组合楼板和纯钢梁柱端板连接节点组成了一种新的连接形式-半刚性组合连接。针对我国目前还没有关于平端板连接梁柱组合节点设计规定的现状,基于现有的研究成果,本文提出了平端板连接半刚性组合节点设计的方法和建议,可为我国相应规范的修订提供参考。
刘秀华, 巢沧海, 石文龙
doaj