Results 21 to 30 of about 24,308 (122)

Preliminary exploration of heavy metal accumulation in Agaricus bisporus [PDF]

open access: yes, 2016
随着工业化和城镇化的快速发展,越来越多的重金属污染物通过各种途径被释放到土壤等环境中。其不仅直接毒害土壤生物和植物,破坏生态结构,还可以通过食物链迁移转化,危害人体健康。究竟如何修复重金属污染是当前重要的环境问题。 本课题以人工培养的双孢蘑菇(Agaricusbisporus)AS2796为主要研究对象。对其以及杏鲍菇、茶树菇和秀珍菇菌丝体做不同浓度的重金属Pb、Cd和As胁迫处理,研究四种大型真菌重金属富集能力。检测结果表明双孢蘑菇较其他3个菌株而言,对Pb和Cd的富集能力更强。在1mg/L条件下 ...
张维友
core  

Nutritional and Physiological Markers Are Mediated by Seasonality and Forest Access in Captive Coquerel's Sifakas 圈养科氏冕狐猴 (Coquerel's Sifakas) 的营养和生理指标受季节性和森林通道的影响

open access: yesIntegrative Conservation, Volume 4, Issue 4, Page 652-664, December 2025.
We profiled nutritional and physiological markers in captive sifakas, endangered primates from Madagascar, managed in expansive, non‐native forest enclosures. Variation in many markers reflects freely foraged diets and the energy required to maintain homeostasis under more naturalistic conditions.
Lydia K. Greene   +5 more
wiley   +1 more source

辽西地区野兔危害情况调查

open access: yes野生动物学报, 2009
通过走访、问卷调查和样地调查,对辽西地区野兔危害情况进行了初步调查,并对调查数据进行了统计分析。结果表明:辽西地区野兔主要危害杏树,其次是刺槐、杨树和梨树等;野兔对不同林龄杏树危害差异显著。其中,对3林龄以下杏树危害严重,3林龄以上危害较轻;野兔对不同地区杏树危害程度差异显著,主要表现在对海拔较高降雨较少的地区危害程度较海拔低降雨相对多的地区高。
吴建平, 樊育英, 余海慧
doaj  

多介质环境目标值在环境评价中的应用 [PDF]

open access: yes, 2012
对于环境中污染物对人体或生态系统的影响以及对一些尚没有环境标准值的有毒污染物质的评价,可参照美国环保局推算出来的介质环境目标值。介绍了多介质环境目标值的含义、推算模式,并将其应用到某市自来水水源的环境评价工作中。以最基础的毒性数据为依据的水体有毒有害有机物的环境安全性及污染源评价,对制定我国环境质量标准具有参考和借鉴作用,尤其在农药生产污染物排放标准的确定方面有着重要的应用价值。实例分析表明 ...
吕平毓, 米武娟
core  

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.
Brief summary: 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.
Mylange Dona Kasundi Mekhala Gunasena   +2 more
wiley   +1 more source

黑龙江青云林场野猪危害调查及防治

open access: yes野生动物学报, 2012
人和野猪的冲突已经成为日益关注的问题。2010年6~10月,在黑龙江省尚志市青云林场利用走访和问卷调查对野猪危害进行了研究,并通过散布东北虎粪便、放置东北虎图像、播放东北虎声音的方法对野猪危害进行了防治并与当地居民防治野猪危害的措施进行了比较。结果如下:(1)野猪危害多在夏初至秋末,主要危害玉米和西葫芦,受危害的农田多是林缘地和林间地。(2)把野猪第2次进入农田与第1次进入农田的间隔天数作为防治措施的有效性评估指标,研究发现利用东北虎粪便、图像、声音防治野猪危害的有效期分别是3.00±0.58 d、1 ...
张丹, 刘丙万
doaj  

Research and application of heavy metal leaching of waste concretein Xiamen area [PDF]

open access: yes, 2016
重金属是我国“十二五”规划中重点防控的污染物,重金属对环境和人体极具潜在的威胁,它不但不能被微生物分解,反而可以被生物体富集,或与某些阴离子(团)形成其他毒性更强的金属化合物。重金属在环境中将经历地质和生化双重循环迁移转化,并通过各种渠道(如大气、饮水、食物等)进入人体,这种摄取将对人体造成极大危害。重金属的过量能抑制生物酶的活性,影响人体正常的生物化学反应。重金属与人体蛋白质、核糖、激素等反应,形成金属络合物或螯合物,使其丧失或改变原来的生理化学功能而产生病变。 我国建筑产业飞速发展 ...
王振华
core  

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

Analysis on the climate characters of high temperature in Summer and discussion of its early warning in Yongjia, Zhejiang Province(永嘉县夏季高温天气气候特征分析及预警指标探讨)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2015
利用1971~2013年永嘉县夏季高温资料,建立高温过程的时间序列,分析了夏季高温天气的气候特征,并对出现危害性高温时的预警指标作了进一步探讨.研究表明:永嘉县夏季高温天气具有显著的局地性特征,且高温多集中在7月中下旬和8月上旬;副热带高压是影响本地夏季高温的主要天气系统,当本站处在副高脊线附近,高空下沉气流明显,低层在暖脊或暖中心附近,中高层为西南(或偏西)气流时,容易出现危害性高温;危害性高温出现时,天况稳定、云量偏少、日照时数较长、能见度较好、风速较小,且以西南风居多.
LYUJiangshan(吕江山)   +4 more
doaj   +1 more source

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

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