Results 21 to 30 of about 1,708 (165)

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  

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  

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  

Design and Implementation of Intelligent Surveillance System for Jinjiang Tax Office Building [PDF]

open access: yes, 2015
作为一门交叉性学科,智能视频监控技术研究与计算机科学、计算机网络、数字信号处理、计算机视觉等众多学科相关联。运动目标的分类技术在智能视频监控技术中占有举足轻重的地位。全面理解视频中特定目标的行为,对潜伏的危险因素发出警报是智能视频监控系统的最终目标。 本课题研究开发了一套税务办公大楼的智能安全监控系统。文中首先介绍智能视频监控系统的研究目的及意义、国内外发展现状,同时总结了本文的主要研究内容。然后对本课题涉及的基本概念及相关技术进行了介绍,为后期方案制定与系统设计打下理论基础 ...
何伟玲
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

Analysis and Design of Fire Fighting and Rescue Command System for Urban Fire Control Integration [PDF]

open access: yes, 2015
随着城市人口的不断增长,城市的消防工作日益重要。城市作为人类各个生活和生产要素的载体,公共消防安全不确定和非传统性因素日益增多,火灾机率和风险不断增加;社会、经济、科技、文化快速发展与公共消防基础建设、管理水平相对滞后的矛盾,社会防控火灾能力与人民群众日益增长的消防安全需求不相适应的矛盾还很突出。火灾隐患大量存在,火灾形势仍十分严峻。因此,城市消防部队灭火救援指挥工作面临着巨大挑战。 当今社会是高度信息化的社会,消防一体化建设可以将消防部队灭火救援工作的各个部分连接在一起 ...
程黎薇
core  

How Many Floods Have Occurred in China in the Past Decade? A Perspective From Social Media

open access: yesEarth's Future, Volume 13, Issue 4, April 2025.
Abstract Global climate change has led to frequent and widespread flood disasters in China. Traditional flood disaster investigations mainly focus on major flood events, and small‐scale flood events are often overlooked. This study utilized the Sina Weibo social media platform to detect flood events in 370 cities in China from 2012 to 2023.
D. Shen   +5 more
wiley   +1 more source

新型自复位耗能钢框架抗震及震后抗火试验研究

open access: yesJianzhu Gangjiegou Jinzhan, 2023
地震易诱发次生火灾从而加剧结构破坏和生命财产损失。自复位耗能钢框架作为一种新型可恢复功能体系,已有研究聚焦其抗震性能评价,但尚且缺乏对其震后火灾下的灾变行为和失效机理的相关研究。针对一种以预应力钢棒和屈曲约束板为自复位和耗能元件的新型钢框架,基于节点试验对其抗震及震后抗火性能进行研究。抗震试验结果表明,设计合理的自复位耗能节点在转角高达6%时,仍可实现预期的损伤集中和震后复位机制。震后抗火试验结果表明,在经历幅值6%的转角变形后,自复位耗能节点仍具备长达1.5 h的耐火极限和高于900 °C的耐火温度 ...
楼挺, 王伟, 李俊霖
doaj  

Home - About - Disclaimer - Privacy