Results 31 to 40 of about 218,527 (154)

Integrating Plant Tissue Culture and DNA Barcoding: Cutting‐Edge Technologies for Plant Conservation in Sri Lanka 整合植物组织培养与dna条形码技术:斯里兰卡植物保护的前沿技术

open access: yesIntegrative Conservation, Volume 4, Issue 4, Page 555-568, December 2025.
Sri Lanka's biodiversity is threatened by habitat loss, climate change, and ineffective traditional conservation methods. Integrating plant tissue culture and DNA barcoding offers scalable, precise tools for conserving rare and endemic species. This review emphasizes the potential of biotechnological approaches to enhance conservation accuracy and ...
Mylange Dona Kasundi Mekhala Gunasena   +2 more
wiley   +1 more source

某區域教學醫院職業生物性危害教育對員工認知態度的影響 [PDF]

open access: yes, 2009
[[abstract]]目的:探討醫院員工接受職業生物性危害教育與否對認知態度的影響。背景:近年來員工受到生物性危害威脅隨醫療環境及生態的變遷以及工作安全的被重視,而成為醫療機構經營的重要課題。研究方法:南部某區域教學醫院為研究為對象;研究設計採問卷調查法;問卷設計為結構式且不記名方式;問卷發展依據相關文獻設計;研究母群體為該醫院之全體員工;統計方法為描述性及推論統計。結果:(1)發出問卷300份,有效問卷285份,回收率95%。(2)有上過執業生物性危害課程者142人(49.8%),沒上過者142人 ...
沈雅春
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消毒供应室护理人员职业危害因素及对策

open access: yesHuli yanjiu, 2008
摘要: (免费在线浏览)消毒供应室是医院的消毒供应中心,是医院的“心脏”,在控制医院感染中发挥着不可忽视的重要作用。由于工作性质和工作场所的特殊性,工作中存在着许多危害护理人员健康的有害因素,对这些有害因素采取必要的防护措施,既可以避免护理人员自身遭受危害因素的侵袭 ...
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doaj  

Challenges in Collaborative Domestic Emergency Management in Canada: Stakeholders' Perspectives on the Role of the Military

open access: yesRisk, Hazards &Crisis in Public Policy, Volume 16, Issue 4, December 2025.
ABSTRACT Research examining the complexities and operational structures of civil–military coordination within large‐scale disaster response frameworks in Canada remains scant. This study addresses this gap by critically evaluating existing civil–military coordination mechanisms, identifying systemic deficiencies, and proposing evidence‐based strategic ...
C. Emdad Haque   +2 more
wiley   +1 more source

危害莼菜的几种摇蚊幼虫

open access: yes, 1989
莼菜为长江中下游地区民众喜爱的菜肴,具有较高的营养价值。本文重点叙述主要危害莼菜的三带环足摇蚊Cricotopus trifasciatur(Panzer)幼虫,记述了这种幼虫的特征和生长环境以及这类幼虫危害莼菜的过程和结果。同时亦简要介绍了另外两种对莼菜危害较轻的摇蚊幼虫,描述了它们的形态和分布 ...
王士达, 叶奕佐
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Relocating Citizens From Urban Environments Exposed to Hazardous Levels of Contamination: A Rapid Scoping Review

open access: yesRisk, Hazards &Crisis in Public Policy, Volume 16, Issue 4, December 2025.
ABSTRACT Background Hazardous levels of contaminants produced by anthropogenic activities are increasingly pervading residential environs and urban areas. Hazardous contamination can pose significant health risks for citizens dwelling in exposure pathways.
Rosina Johnson   +3 more
wiley   +1 more source

清远地区麻竹笋地下害虫的危害特征及防治措施

open access: yes, 2017
采用抽样调查的方法,研究了麻竹笋地下害虫的危害特征及防治措施。结果表明,麻竹笋地下害虫的种类较多,其中危害较大的是沟金针虫、阔胫鳃金龟、毛黄脊鳃金龟、小黄鳃金龟、黑绒鳃金龟。体型较大的沟金针虫在麻竹笋土壤中的分布为聚集分布,而金龟子类害虫则为随机分布 ...
刘细群, 闫晓丽, 曹红梅
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长江上游滑坡危险度区划

open access: yesShuitu Baochi Xuebao, 1994
采用数学统计方法,将长江上游约100万km^2地区划分为95个样本区。按照危险度高,中、低三个等级,区划出高危险度区约25万km^2;中危险度区约32万km^2;低危险度区约38万km^2。并对三种危险度区域内的滑坡危害作了概述。
乔建平 张小刚
doaj   +2 more sources

Downlisting and recovery of species assessed by the IUCN

open access: yesConservation Biology, Volume 39, Issue 6, December 2025.
Abstract Despite the increasing number of species assessed for extinction risk by the International Union for Conservation of Nature (IUCN) (163,040 species as of 2024), only about 1 in 1,000 have been downlisted due to genuine population improvement. Although this rare conservation achievement has been widely celebrated in several recent cases, some ...
Mu‐Ming Lin   +7 more
wiley   +1 more source

兰新铁路乌阿段风沙危害防治

open access: yes, 2002
该成果依据不同区段的危害特点分别选择了半隐蔽式行列沙障、羽毛排栅栏、半隐蔽式方格以及尼龙网防沙栅栏等多种形式进行了对比试验,取得了良好的防治效果,有效地制止了沙害。在机械沙障内,人工栽植旱生灌木和多年生草本,并采用了无灌溉造林方法,采用了阻、固、清并举,机械防沙与生物防沙结合,先机械措施后生物固沙,危害区与水源区并重的综合治理的思路和方法。经治理后,1998-1999年全线未发生一次停车事故,道轨基本无积沙现象,行车速度由原来每小时35公里提高到70公里 ...
周兴佳   +7 more
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