Results 31 to 40 of about 3,110 (166)

基于保护间隙的配电网差异性综合防雷保护

open access: yesDianci bileiqi, 2013
防雷是保证电力系统安全运行的重要措施之一。利用球型可调过电压保护间隙与其它防雷措施相配合,分别对架空配电线路、电缆入地端、变电所线路进线段、配电设备等提出不同的精细化防雷保护措施,即差异性综合防雷保护措施,保证电力系统的安全稳定运行。
满超楠   +5 more
doaj  

Design and Implementation of Interactive TV Security System of Broadcast and TV Network Group [PDF]

open access: yes, 2016
广电互动电视业务随着“多业务”运营的深入不断发展,互动电视业务系统的建设需要考虑业务发展的多样性,还需要考虑不断用户增长的扩展性。作为“可运营、可管理”不可分割的一部分,互动电视业务系统的安全性至关重要。随着网络的快速发展和应用技术的飞速进步,系统安全越来越重要,针对互联网的黑客破坏攻击逐渐由网络层迁移到系统层以及应用层。各种新颖类型的黑客、病毒、漏洞攻击和常见的不规范操作都很都很大概率严重威胁到互动点播平台。有线电视用户在享受稳定服务的过程中,也存在着遇到各种安全风险的可能 ...
林动
core  

Optimization Analysis of Main Power House Design of a Large-Scale Compressed Air Energy Storage Power Station [PDF]

open access: yes, 2023
[Introduction] The compressed air energy storage power station lacks corresponding codes as technical support in the design of main power House. There are some controversial and inapplicable provisions in the Code for design of compressed air station ...
Bin WU   +5 more
core   +1 more source

Evaluating models of expert judgment to inform assessment of ecosystem viability and collapse

open access: yesConservation Biology, Volume 39, Issue 2, April 2025.
Abstract Expert judgment underpins assessment of threatened ecosystems. However, experts are often narrowly defined, and variability in their judgments may be substantial. Models built from structured elicitation with large diverse expert panels can contribute to more consistent and transparent decision‐making.
Josh Dorrough   +5 more
wiley   +1 more source

用导电涂料与阴极保护联合防止接地网腐蚀

open access: yesDianci bileiqi, 2005
分析了现行接地网防腐技术的不足之处,提出了用导电涂料与阴极保护联合防止接地网腐蚀措施,并讨论了进行联合保护施工的一些注意事项。这种联合保护技术可克服单一保护措施的不足,大大提高接地网的运行可靠性,尤其对大容量变电站接地网防腐蚀提供了更新换代的技术。
杨道武, 朱志平, 李景禄
doaj  

Design and Implementation of Network Security System Based on Multi-Protocol Label Switch [PDF]

open access: yes, 2016
VPN(虚拟专用网络)实例间隔离性出色是MPLS(多协议标签交换)网络的一个重要特点,也正是由于这一优势,在最近几年,不同企业甚至不同行业间,均广泛采用这一网络。然而,VPN实例内的安全性问题却没有进行充分的考虑。当前阶段中,通常将安全设备安装在MPLSVPN的网络边缘处,也就是CE(用户边缘)设备部位,以达到保护的效果。然而,在网络的分支机构比较复杂的情况下,CE设备也通常会随之增加,在这种情况下,利用这一方式通常需要支付较高的成本,而且不利于整网的实用性,同时,在后续维护和管理中也会带来较大的困难 ...
李澍
core  

Combating infections under siege: Healthcare challenges amidst the military assault in Gaza

open access: yesWorld Medical &Health Policy, Volume 17, Issue 1, Page 188-213, March 2025.
Abstract The ongoing Israeli military assault on Gaza has caused a devastating collapse of healthcare infrastructure, resulting in an unprecedented surge in infectious diseases. The destruction of sanitation systems, restrictions on medical supplies, and displacement of civilians have created an environment conducive to the rapid spread of waterborne ...
Bilal Irfan   +24 more
wiley   +1 more source

关于信阳电力调度大楼防雷保护措施的讨论

open access: yesDianci bileiqi, 1995
对信阳电力调度大楼现有的防雷保护措施进行了分析;对1994年7月的一次雷击事故进行了讨论,在此基础上提出了该大楼在防雷保护方面的整改完善的主要措施。
李景禄, 李从旺
doaj  

The need for carbon finance schemes to tackle overexploitation of tropical forest wildlife

open access: yesConservation Biology, Volume 39, Issue 1, February 2025.
Abstract Defaunation of tropical forests, particularly from unsustainable hunting, has diminished populations of key seed dispersers for many tree species, driving shifts in forest community composition toward small‐fruited or wind‐dispersed trees with low wood density. Such shifts can reduce aboveground biomass, prompting calls for overexploitation to
Caroline E. Milson   +3 more
wiley   +1 more source

边坡稳定性监测系统防雷设计及应用

open access: yesDianci bileiqi, 2020
针对边坡稳定性监测系统复杂工况条件下的设备防雷问题,分析直击雷和感应雷两种引起设备损坏的雷电危害和其危害方式。根据不同种类雷电危害的特点及监测设备的防护需求,设计采用由多针型避雷针、信号线屏蔽套管、防雷器、多级电源开关和人工接地网等装置构成的外部防雷措施和内部防雷措施结合的综合防雷系统,为边坡稳定性监测设备提供防雷保护,保证设备安全平稳运行。
李建宇   +4 more
doaj  

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