Results 11 to 20 of about 21,698 (169)
Surgical treatment of neuropathic pain [PDF]
, 2013 Neuropathic pain (NP) is a transient dysfunction caused by the damage of peripheral nerve and central nervous system, characterized with hyperalgesia, allodynia and spontaneous pain.
Zhi-pei LING, Zhi-qiang CUI
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Assessing differences among elasmobranch nurseries to aid conservation based on a genomics framework
Conservation Biology, EarlyView.Abstract Elasmobranch nurseries often differ in environmental conditions, demographics, and use patterns. These differences affect the distribution of genetic variation among nurseries. However, conservation and management strategies often fail to account for such differences because they are difficult to characterize.
Dominic G. Swift +8 more
wiley +1 more source
Gaoya dianqi, 2022 根据导线风阻力的计算原理推导了覆冰导线风荷载增大系数。基于覆冰导线的气动力系数风洞试验结果，分别计算了不同覆冰厚度、不同覆冰种类的圆截面覆冰导线、新月形覆冰导线和D形覆冰导线的风荷载增大系数，给出了便于工程设计和校核使用的覆冰导线风荷载增大系数的取值用表。结果表明，3种覆冰形状导线的风荷载增大系数均受实际覆冰厚度与覆冰种类的影响，其值随覆冰厚度的增大而增大、随覆冰密度的增大而减小。理想圆截面覆冰导线的风荷载增大系数在覆冰密度较小时的部分工况大于规范取值，在覆冰密度较大时均小于规范取值 ...
楼文娟, 白航
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Research on Lightning Performance and Protective Measures of ±800 kV UHVDC Power Transmission Line [PDF]
, 2023 [Introduction] Lightning strike is the primary cause of failures of ±800 kV UHVDC power transmission lines, and the lightning protection assessment of power transmission lines is critical to the safe and stable operation of the system.
Youjun GONG, Zhiwen HE, Ziwei YAN
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Behavioral interventions to reduce demand for threatened freshwater turtles as pets
Conservation Biology, EarlyView.Abstract Growing demand for freshwater turtles as pets has fueled illegal trade and accelerated wild population declines, underscoring the need for theory‐based demand‐reduction interventions. We conducted a three‐part randomized controlled trial with active turtle keepers (n = 1800) in China to test conservation‐ and legality‐framed messages by ...
Wuji Zheng +9 more
wiley +1 more source
Dianci bileiqi, 2009 在输电线路的避雷线对带电导线的防雷保护角设计中,通常不考虑导线带电的影响,将带电导线按不带电导线处理,取避雷线对导线的防雷保护角≤25°,使带电导线得不到避雷线的有效保护,存在着遭受绕击雷害的隐患。为了解决这一问题,提出了避雷线对带电导线的防雷保护角设计新方法。该新方法取以带电导线为圆心,带电导线的最小对地空气间隙距离为半径所构成的圆为带电导线的等效绝缘截面,设计避雷线对该等效绝缘截面的防雷保护角≤25°,从而考虑了导线带电的影响,使带电导线受到避雷线的有效保护。
林苗
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Design and Implementation of Construction Project Management System for a Construction Company [PDF]
, 2015 随着建筑工程的投资的不断加大，对于项目管理的重要性越来越凸显。建筑施工项目因其有着比较多的复杂度，其在管理上涉及到多个方面，也在多个方面中都存在管理的漏洞与盲区，如何对这些地方做到较好的管理，提升建筑工程的管理力度，改善工程管理的方法，提升施工项目的合理性，从而达到对于建筑施工项目管理低成本管理要求。 本课题针对某建筑公司目前的建筑施工项目管理的现状，基于J2EE软件开发技术，设计并实现了建筑施工项目管理系统，主要完成了以下几方面的研究： 首先，本课题以软件工程中的面向对象的设计思想为导线 ...
杨海军
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How Do I Measure up? Social Influence and L2 Motivation in the Algorithmic Age
International Journal of Applied Linguistics, EarlyView.ABSTRACT Comparative thinking is a fundamental human drive and a hallmark of contemporary life. For social action, such as the learning and use of additional languages, a target for appraisal (an L2 attribute) is evaluated in relation to a comparison standard (an appraiser's standpoint).
Alastair Henry, Meng Liu
wiley +1 more source
Dianci bileiqi, 2018 碳纤维复合芯导线是最常见的增容导线之一,工程应用越来越多,但国内外关于碳纤维复合芯导线的舞动特性及受损特征的研究较少。针对该问题,本文建立了舞动试验观测档线路,通过安装并调节人工模拟冰,实现了碳纤维导线的舞动模拟,完成了自然风激励下碳纤维复合芯导线与普通导线的舞动试验对比,试验结果表明:在低风速时,碳纤维复合芯导线舞动的动态张力比普通导线小;当高风速时,碳纤维复合芯导线舞动的动态张力比普通导线大;高风速时,碳纤维复合芯导线的舞动幅值和动态张力容易被低估。同时,本文利用导线舞动模拟试验机 ...
张博 +4 more
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Dynamics of Spin Wave in Cruciate One-dimensional Ferromagnetic Nanostructures [PDF]
, 2016 磁性材料作为超高密度存储和超高速数据处理的载体，具有非常广阔的应用前景。随着纳米技术以及自旋电子学这一新兴学科的不断发展，基于一维铁磁纳米结构的自旋波器件受到广泛关注。该类器件中将不可避免产生传输线路的相互交叉。交叉区域中不均匀分布的磁矩构型对自旋波传输产生散射，从而可以被等效地视为一个自旋波“势垒”。在本文中，我们着重研究了京赫兹（109Hz）频段的自旋波在具有十字形交叉结构的坡莫（permalloy）合金纳米线中的传播特性。 本文首先回顾磁学理论基础，简要讨论自旋波理论及其发展 ...
张佳超
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