Results 11 to 20 of about 3,447 (154)

Use of carrion fly iDNA metabarcoding to monitor invasive and native mammals

Conservation Biology, Volume 37, Issue 5, October 2023., 2023
Abstract Severely fragmented habitats increase the risk of extirpation of native mammal populations through isolation, increased edge effects, and predation. Therefore, monitoring the movement of mammal populations through anthropogenically altered landscapes can inform conservation. We used metabarcoding of invertebrate‐derived DNA (iDNA) from carrion
Kristen Fernandes, Philip W. Bateman, Benjamin J. Saunders, Michael Bunce, Kristine Bohmann, Paul Nevill   +5 more
wiley   +1 more source

The Two Faces of Introgression in Conservation Biology 基因渗入在保育生物学中的双重面貌

Integrative Conservation, Volume 4, Issue 3, Page 339-344, September 2025.
Conservation biologist need to take into account the various aspects of introgression in their attempts to protect the species integrity and evolutionary potential of threatened species. To do so, they have to overcome the bias created by the Mayrian species concept that considers species as having distinct gene pools.
Harald Schneider, Charles H. Cannon
wiley   +1 more source

‘Where else can they go?’: Violence, resistance and the socio‐cultural trajectories of Kashmiri women in Freny Manecksha's Behold I Shine: Narratives of Kashmir's Women and Children

Sexuality, Gender &Policy, Volume 7, Issue 4, Page 348-365, November 2024.
Abstract In the armed conflict between Kashmiri militancy and the Indian state forces, Kashmiri women have been relentless victims of abduction, rape, molestation, and cruel objectification by the militaristic patriarchs of both sides. In the context of the state's unaccountability, the rebuttal of justice is horrific in Kashmir.
Payel Pal, Goutam Karmakar
wiley   +1 more source

Core concerns: The need for a governance framework to protect global Internet infrastructure

Policy &Internet, Volume 16, Issue 2, Page 411-427, June 2024.
Abstract The war in Ukraine has underscored the risks and threats to global Internet infrastructure from geopolitically motivated cyber operations. The Domain Name System and core protocols responsible for the routing, forwarding, and security of Internet traffic have been exploited by actors in Russia and Ukraine for denial‐of‐service attacks ...
Dennis Broeders, Arun Sukumar
wiley   +1 more source

Research of laser and solar hybrid powered system for Active optical-electronic current transformer [PDF]

, 2011
随着电力工业的不断发展，电网电压等级的不断提高，对电压、电流的测量要求也在不断提高。传统的电磁式互感器无法满足迅速发展的数字化电网电压的测试要求。目前电子式（光电式）互感器已成为电网中高电压、高电流测量新的研究热点，有源式光电电流互感器是新型互感器研究的典型代表，而高压端的供能是有源式光电电流互感器的关键部件之一。目前研究的主要有线圈从母线上取能、高压电容分压式供能、激光供能、蓄电池供能、超声电源供能等供能方法。 本文在光电互感器基本原理理论研究的基础上，对上述各种供能方法进行分析研究，结合激光供能 ...
孙存淼
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Preparation and Characterization of Sealing Glass Ceramics Rich in Bi2O3 [PDF]

, 2008
目前，国内外电子与电器设备上的电热管常用的封接材料是含铅微晶玻璃。欧盟自2006年7月1日起启动“RoHS”指令，中国于2007年3月1日起开始实施《电子信息产品污染控制管理办法》，都对电子与电器设备中的封接材料含铅量作了严格的限制。因此，研制无铅微晶封接玻璃具有十分重大的意义。 本文概述了封接玻璃和玻璃—金属封接的研究现状和应用需求。在深入课题调研基础上，优化配方设计，采用高温熔融法熔化玻璃，制得玻璃粉；测定了玻璃化转变温度（Tg）和软化温度（Tf）；通过热处理获得微晶封接玻璃。 研究了磨球种类 ...
张计华
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半导体釉高压悬式绝缘子

Dianci bileiqi, 1985
半导体釉绝缘子的试运行（有时称为稳定绝缘子）,不仅能够确定对釉的理化性能要求,而且可以确定对绝缘子的结构,以及对其制造工艺的要求。实践证明,输电线路绝缘子的运行可靠性和稳定性既决定于半导体釉的性能,也决定于绝缘部件（瓷件）的结构形状,绝缘子串每片绝缘子的电阻与规定值的偏差,施釉厚度以及釉与绝缘子的金具（钢帽和钢脚）之间电接触的可靠性等。
Н·П·ЛЕШ、ЕНКО, 王振林
doaj  

Growth and etching of two-dimensional hexagonal boron nitride [PDF]

, 2017
六方氮化硼h-BN俗称“白石墨烯”，因其独特的六角蜂窝原子结构、优异的物理化学性能以及广阔的应用前景引起科学界的广泛关注。目前，二维h-BN薄膜的制备尚处于基础研究阶段。常用的制备方法包括机械/化学剥离法、化学气相沉积法（包括气相外延法和非气相外延法）、离子束溅射沉积法等。目前，高质量h-BN多通过机械剥离法从体材料h-BN晶体获得，但尺寸小，效率低。而其他制备方法合成的二维h-BN晶体质量远远不如剥离的材料。规模化制备高质量、大面积、可控层数的h-BN依然具有较大的难度和挑战性。为此 ...
姚茜
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Discussion on the Fire Fighting Equipment Power Cable and Application [PDF]

, 2017
通过综述消防设备供电线缆的术语、分类及规范对消防设备供电线缆的选用要求，分析了当前消防设备供电线缆从术语、消防线路产品及设计选用等方面存在的问题，提出应规范并丰富消防设备供电线缆的术语，科学地划分产品类别，并结合产品标准及检验标准，将满足消防设备在火灾事故时连续供电要求的线缆应用在建筑防火工程中去，已达到减少火灾危害，保护人员和财产安全的目的。Through reviewing the firefighting equipment power cable terminology, classi ...
任耀辉
core   +1 more source

Study on Synthesis and Properties of Polysiloxane Modified Epoxy Resin [PDF]

, 2007
本文采用八甲基环四硅氧烷（D4）、甲基二乙氧基乙二胺丙基硅烷（DL-602）为单体，以六甲基二硅氧烷（MM）为封端剂合成不同粘度的侧氨基聚硅氧烷（SAPS）。并用合成的侧氨基聚硅氧烷来改性环氧树脂（E－44），制备一系列的样品。通过动态热机械分析仪（DMTA）、接触角仪、电子拉力试验机以及扫描电镜（SEM）对其进行研究。结果表明对于含固定侧氨基比例的聚硅氧烷，其与环氧树脂的相容性随着聚硅氧烷粘度的增大而先增大后减小；含侧氨基聚硅氧烷能有效增韧环氧树脂，而且SAPS粘度越大，改性环氧树脂的抗冲击强度就越高。
陈少鹏
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