Results 31 to 40 of about 3,903 (212)

Uncovering Positive Developments Amid the Wave of Negative News About Megafires in Brazil 在巴西特大火灾的负面消息浪潮中探寻积极进展

open access: yesIntegrative Conservation, Volume 4, Issue 2, Page 113-115, June 2025.
The integration of innovative public policies, interinstitutional collaboration and better scientific understanding of fire dynamics has enabled the effective implementation of the IFM and a more efficient response to megafires in Brazil. ABSTRACT Despite the ongoing challenges posed by megafires in Brazil, significant progress has been made from such ...
Alexandre de Matos Martins Pereira   +7 more
wiley   +1 more source

大跨度建筑钢结构抗火性能研究进展与趋势

open access: yesJianzhu Gangjiegou Jinzhan, 2022
大跨度建筑空间大,火灾升温区别于小室火灾。大跨度建筑钢结构体系不同于多高层梁柱框架钢结构体系,其火灾下力学响应更加复杂。如何科学地评价大跨度建筑钢结构,特别是空间杆系钢结构和预应力张拉钢结构的抗火性能,受到了科研和工程技术人员越来越多的关注。简要回顾了大跨度建筑钢结构抗火的研究历程,论述了近年来大跨度建筑钢结构抗火研究的主要进展,并对大跨度建筑钢结构抗火研究提出展望。
杜咏, 李国强
doaj  

Design and Implementation of Positioning System for Fireman Based on ZigBee [PDF]

open access: yes, 2015
近年来火灾的次数呈几何倍数增长,很多消防员都在救火中失去生命。房屋的倒塌、烟雾引起的窒息、烧伤等都是严重威胁生命安全的因素。很多火灾场面十分凄惨,房屋倒塌的瞬间,消防员根本无力自救,如果没人帮助他们,只能看着一个个鲜活的生命瞬间离去。当前消防员只是依靠呼救器来实现救助,在实际的火灾中,呼救器存在很多弊端,无法判断消防员的位置。很多科学家都在研究,怎样才能在浓烟滚滚和烟火中锁定消防员的位置,并能够实现全程监控,这就能够及时的进行援助和救助,这对保障消防员生命安全有着重要的意义 ...
林群
core  

Endemic Creature Under the Risk of Extinction: A Case Study on Gekko badenii in Vietnam 濒危特有物种案例研究:越南 金壁虎 (Gekko badenii)

open access: yesIntegrative Conservation, Volume 4, Issue 2, Page 143-153, June 2025.
This study provided information on the abundance, population demography and activity pattern of an endangered species of Gekko badenii at the type locality of Ba Den Mountain, southern Vietnam. Local and international use and trade in Gekko badenii for food consumption and as pet were investigated and conservation recommendations highlighted.
Hai Ngoc Ngo   +8 more
wiley   +1 more source

基于顶棚温度分布的变电站高压电缆沟道着火点辨识

open access: yesGaoya dianqi, 2023
变电站高电压电缆沟道环境的封闭性强,难以从沟道外判断电缆火灾早期发展状况。为了探测沟道内电缆火灾,研究火灾早期顶棚温度分布与电缆着火点位置之间的关系,以变电站高压电缆沟道为模型,开展电缆火灾燃烧实验,测量电缆沟道内温度的分布变化,分析顶棚温度距离着火点位置变化的拟合关系,验证了着火点辨识方法的准确性。研究结果表明,顶棚最大温升比例系数α的平均值为17.71,1∶1高压电缆沟道实验平台的温度测量结果准确;在纵向方向上,顶棚温度由着火点位置向两侧递减,温度变化曲线具有明显的阶段特点;在长度为5 ...
段玉兵   +6 more
doaj  

Design and Implementation of Assistant Decision System for Fire Control Based on Wireless Image Transmission [PDF]

open access: yes, 2016
随着无线图像传输技术的迅猛发展,人们对获取视频、图片的时效性要求越来越高,无线图像传输已经成为网络化信息技术发展的趋势,无线图像传输技术在社会各个行业都有广泛的应用。在救援难度大、建筑物内部复杂的单位、特殊化危品处置、跨区域联合作战中,依靠无线对讲机和车载台是做不到视频图像传输的。为了能适应今后的消防部队作战指挥的多元化发展,灾害事故的多样化和复杂化,消防部队扑救各类火灾和事故救援的难度加大的状况,奋战在一线消防的官兵迫切需要提供一种可以直接把火灾扑救现场和抢险救援现场画面实时传输出去 ...
杨娜
core  

Pre‐Monsoon Habitat Preference and Spatial Overlap Between Blue Sheep (Pseudois nayaur) and Livestock in Dhorpatan Hunting Reserve, Nepal 尼泊尔多尔帕坦狩猎保护区季风前岩羊 (Pseudois nayaur) 与家畜的栖息地偏好及空间重叠

open access: yesWildlife Letters, Volume 3, Issue 2, Page 73-83, June 2025.
Blue sheep in Dhorpatan Hunting Reserve prefer alpine grasslands at 3800–4200 m on south‐facing slopes near water resources, favoring areas with low tree cover and dense ground cover, particularly rhododendrons, junipers, and Cyperaceae grasses. Their habitat significantly overlaps with livestock.
Amit Adhikari   +4 more
wiley   +1 more source

方钢管混凝土柱-钢梁T形件连接节点耐火性能数值分析

open access: yesJianzhu Gangjiegou Jinzhan, 2021
为研究方钢管混凝土柱-钢梁T形件连接节点的耐火性能,通过验证已有试验,在模型可靠的基础上,建立了节点在钢梁下翼缘以下区域受火及钢梁上翼缘以上区域受火两种工况下耐火极限有限元计算模型。分析了在两种受火工况下柱端火灾荷载比、梁端火灾荷载比、梁柱线刚度比对节点耐火极限、破坏模态的影响。结果表明:当节点钢梁下翼缘以下区域受火时,随着升温时间不断增长,下T形件翼缘及腹板温度梯度逐渐消失,由于混凝土的热惰性,穿心螺栓螺杆沿杆轴方向温度梯度较为明显。当节点钢梁下翼缘以下区域受火时,钢梁整体表现为向上翘曲变形 ...
杨帆, 魏国强, 杜长虹
doaj  

Fire protectionsystem managementwithProject scheduleManagement application [PDF]

open access: yes, 2015
本文以消防报警系统检测维护为研究对象,对其进度管理进行了相应的研究和探讨。本文首先对项目进度管理的基本理论方法做了分析讲解,然后分析了消防报警系统检测项目进度管理的现状所存在的问题,说明项目进度计划的执行需要多个管理办法进行配合、支持,只有解决好其他项目问题,项目进度才有了执行的保障。 本文着重论述了项目进度管理的系统方法。通过对项目进行工作分解,对工序进行时间估算,并进行合理的排序。制定了初步的项目进度计划。这个计划是本文讨论的重点。通过工序优化、压缩关键路径时间,物质 ...
陈景峰
core  

Diversity and Activity Pattern of Terrestrial Mammal Species in Serra do Amolar, Brazilian Pantanal 巴西潘塔纳尔湿地阿莫拉尔山脉陆生哺乳动物物种的多样性及活动模式

open access: yesWildlife Letters, Volume 3, Issue 2, Page 56-63, June 2025.
The Serra do Amolar, located in the Brazilian Pantanal, is a crucial but understudied area for biodiversity conservation. Through camera traps, we recorded 29 mammal species, including three rodent species documented for the first time in the area: Cavia aperea, Cuniculus paca, and Holochilus chacarius.
Sergio Eduardo Barreto de Aguiar   +13 more
wiley   +1 more source

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