Results 21 to 30 of about 6,416 (169)
Using online reports of seahorse seizures to track their illegal trade
Conservation Biology, Volume 39, Issue 5, October 2025.Abstract Illegal wildlife trade (IWT) is a persistent and extensive threat to global biodiversity. Hundreds of marine fish species are subject to regulation under the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES), but it is unclear how much protection species gain from CITES because information on marine fish ...
Sarah J. Foster +3 more
wiley +1 more source
齿轮可靠度计算的概率有限元法（第Ⅱ部分:齿面接触疲劳强度的计算）
Jixie chuandong, 1993 本文将概率有限元法用于齿轮接触疲劳强度可靠度的计算。以功率、转速和疲劳极限为随机变量,在求解接触问题的有限元—线性规划法基础上,建立了相应的概率有限元基本方程及求解方法。该方法不仅可用于齿轮接触疲劳的可靠度计算,也可用于其他弹性体接触问题的可靠度计算。
吴立言, 刘更, 王步瀛
doaj
Nonlinear finite element analysis for seismic performance of high-strength concrete beam-column joints with new reinforcement details [PDF]
, 2006 Because the factors that affect the behavior of the beam-column joints are complicated, an experimental study alone is not sufficient. Therefore, a nonlinear finite element analysis was conducted to provide better understanding of the performance of the ...
Gan, L, Li, J, Pam, HJ
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Sexuality, Gender &Policy, Volume 8, Issue 3, August 2025.ABSTRACT Spanish universities are currently applying different protocols designed to facilitate name and/or gender changes in the documentation of trans, nonbinary, and intersex individuals in their education communities in compliance with the legislation in force. These policies aim to address the discrimination experienced by these people in everyday
Lucas Platero +3 more
wiley +1 more source
Study of GHz Surface Acoustic Wave Humidty Sensor Using Nanostructured Materials [PDF]
, 2016 随着物联网应用的不断扩展，需要大量传感器节点组成无线传感网络以实现未来万物互联的目标。其中，湿度测量器件在智能家居、气象、工业控制等领域是最为广泛和基础的传感器节点。为了实现无线传感网络，现有的电阻、电容型传感器件需要独立的电源系统持续供电，而在电池容量有限的条件下，器件需要采用占空比方式工作，即在高功耗的传感工作状态之间加入待机模式，以减小传感器节点的总功耗。由于待机模式的存在，无法对整个环境状态进行实时、无缝的检测，且由于构成节点的传感元件一般属于相对高功耗的器件，电池寿命始终有限。声表面波 ...
刘源
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Towards a global understanding of tree mortality
New Phytologist, Volume 245, Issue 6, Page 2377-2392, March 2025.Summary Rates of tree mortality are increasing globally, with implications for forests and climate. Yet, how and why these trends vary globally remain unknown. Developing a comprehensive assessment of global tree mortality will require systematically integrating data from ground‐based long‐term forest monitoring with large‐scale remote sensing.
International Tree Mortality Network +114 more
wiley +1 more source
Thermal Effect Mechanism and Surface Topography of the Micro-EDM Workpiece [PDF]
, 2015 微细电火花加工具有可以非接触加工、三维加工能力以及设备简单、可实施性强、加工性能与材料硬度强度无关等优点。这种方法能加工处理的材料非常广泛，不仅可以加工各种性能优良的金属、合金，还可以加工陶瓷、硅等半导体材料。因此，微细电火花加工在复杂微小零件的制作中有着独特的优越性，也得到了广泛的应用。目前，微细电火花加工的理论研究和工艺研究还存在很多问题，尤其在蚀除过程中，现在普遍采用普通电火花的加工机理来说明。微细电火花加工具有放电时间短、放电通道半径小及能量密度高等特点，所以其放电过程与普通电火花明显不同。因此，
王春梅
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International Journal of Applied Linguistics, Volume 35, Issue 1, Page 274-290, February 2025.Abstract Metacognitive regulation refers to learners’ ability to use a repertoire of metacognitive strategies to guide, observe, and manage thoughts, actions, and emotions in learning activities. It has been widely acknowledged as a significant predictor of language learning success, including writing.
Wandong Xu, Xinhua Zhu
wiley +1 more source
Qtech-413 粘弹阻尼材料在盾构隧道中减振性能研究 [PDF]
, 2016 根据盾构隧道的结构特点,用Qtech-413 粘弹阻尼材料对盾构管片标准块进行约束阻尼处理,通过单点锤击振动实验,得到处理前后结构的时域波形、固有频率、复合损耗因子等振动特性。实验结果显示:经过约束阻尼处理后,盾构管片振动加速度幅值降低了26.7%,振动时长降低了50%;各阶固有频率均有所降低,且随着频率的增加,降幅逐渐增加;各阶复合损耗因子均有所升高,高频增幅比低频增幅更大;振动总级值降低了10 dB 左右。因此,Qtech-413 粘弹阻尼材料应用于盾构隧道能降低振动加速度幅值、振动时间 ...
黄舰 +1 more
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Equine Veterinary Journal, Volume 57, Issue 1, Page 87-100, January 2025.Abstract Background Radiological findings in the proximal sesamoid bones (sesamoids) are a persistent source of controversy at Thoroughbred sales, due to inconsistent classification and conflicting assignment of potential clinical importance. Objectives To define the prevalence of sesamoid findings on sales repository radiographs in yearling and 2‐year‐
Frances J. Peat +5 more
wiley +1 more source