Results 21 to 30 of about 4,203 (124)
野生动物学报, 2022 为了解栖息地和气候变化对北树鼩（Tupaia belangeri）活动的影响，于2012年8月—2013年7月采用红外相机技术对广西弄岗国家级自然保护区15 hm2森林动态监测样地及其周边区域内的北树鼩进行监测，采用核密度估计、重叠指数及相对活动强度指数分析其日活动节律及季节性变化规律。结果表明：北树鼩的日活动节律模式属于晨昏活动类型（日活动高峰期：07：00—08：00、16：00—17：00）。不同月份间北树鼩的活动强度指数（t=13.072，df=11 ...
唐创斌 刘志尚 黄振华 姚维 林建忠 汪国海 周岐海
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Zhongguo cuzhong zazhi, 2019 基于昼夜节律的相关认识阐述卒中发病的时间规律及影响因素，探讨卒中防控的新策略。 收集、整理现代医学关于昼夜节律与卒中发病时间的相关性文献，进行综合分析。卒中发病存在显 著的昼夜差异并具有周期性变化，血压、血糖、血脂、Hcy等相关因素出现昼夜节律紊乱可能是导致 卒中存在高发时段的部分原因。适时服用防治药物，调整生活方式，保持自身昼夜节律的稳定，是健 全卒中防控策略和降低卒中发病风险的重要措施。 Abstract: To explore the circadian variation in ...
李佳林，任小巧
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浙江九龙山国家级自然保护区黑麂日活动节律和垂直迁移的季节变化
野生动物学报, 2023 为准确全面地了解黑麂（Muntiacus crinifrons）在九龙山国家级自然保护区的日活动节律和某些栖息地生态因子选择的季节性规律，于2017年10月—2021年2月，在九龙山国家级自然保护区采用红外相机法对黑麂日活动节律和垂直迁移的季节变化进行研究。研究期间，共拍摄到352张黑麂照片，提取到243次有效探测。结果显示：黑麂是晨昏双峰型的昼行性动物。通过四季对比发现，黑麂夏季的活动强度比春季、秋季和冬季高，而各季节间的日活动高峰期时间段和数量存在差异。黑麂 偏好栖息于坡度为20°~40 ...
郑伟成 +6 more
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Breadth at the Helm: Generalist CEOs and Corporate ESG Performance‐Evidence From China
Corporate Social Responsibility and Environmental Management, Volume 33, Issue 6, Page 7696-7720, November 2026.ABSTRACT Drawing on the Upper Echelons Theory and the Imprinting Theory, this study conjectures that generalist CEOs may have a stronger tendency to pursue environmental, social and governance (ESG) goals. We perform multiple regression analyses with observations of Shanghai and Shenzhen A‐share listed companies from 2010 to 2023 in order to explore ...
Shanmei Luo +4 more
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Rare Metals, Volume 45, Issue 11, November 2026.ABSTRACT Regulating the d‐band center of semiconductors through elemental doping presents a promising strategy for enhancing the efficiency of photocatalytic nitrogen conversion. This review systematically summarizes recent advances in d‐band center engineering for photocatalytic nitrogen fixation.
Zixuan Li +10 more
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Habitat and spatial trends of U.K. wintering waterbird populations over 50 years
Conservation Biology, Volume 40, Issue 5, October 2026.Abstract The United Kingdom is an important wintering ground for millions of waterbirds. Most U.K. wintering waterbird populations increased between 1970 and the mid‐1990s, but declined thereafter. We examined U.K. population indices in 46 wintering waterbird species in two 25‐year periods, 1970–1994 and 1995–2019, to identify which waterbird groups ...
Blaise Martay +8 more
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Policy Studies Journal, Volume 54, Issue 3, August 2026.ABSTRACT Disruptive innovations often diffuse faster than inherited policy institutions can classify, assign jurisdiction, and govern them. In these early phases, the central struggle is often not yet about the stringency of substantive standards, but about prior questions of what the innovation is (its legal and administrative classification), who is ...
Sina Jangjoo
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Integrative Conservation, Volume 5, Issue 1, Page 125-136, March 2026.We collated detections of the sun bear from new and previously published camera trap studies across its range. We then analysed these detections at two different spatial scales to assess the habitat associations and diel activity of this species. We found that the sun bear is tolerant to moderate habitat disturbances. ABSTRACT Degraded tropical forests,
Alexander Hendry +5 more
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Journal of Critical Infrastructure Policy, Volume 7, Issue 1, Spring/Summer 2026.ABSTRACT Time and chronology form the invisible architecture upon which modern civilization depends, governing synchronization across markets, power grids, communication networks, transportation, and defense. Yet, this shared temporal framework, engineered through atomic clocks, satellites, and digital synchronization, faces growing vulnerabilities ...
Bilal M. Ayyub
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Zhongguo shiyan zhenduanxue, 2015 生物节律中对人体影响最大的是近日节律,对我们的循环系统、免疫系统、凝血系统以及胃肠道和肾脏的功能都有着显著的影响[1]。近日节律对依托咪酯的镇静作用有影响,患者夜间麻醉诱导时所需依托咪酯较日间少[2]。丙泊酚、瑞芬太尼作为临床常用的镇静剂和阿片类镇痛药是否受近日节律的影响,目前临床报道较少。本研究探讨近日节律对丙泊酚的镇静效应和瑞芬太尼镇痛效应的影响。1资料与方法1.1一般资料选择2013年7月 ...
黄彭 +4 more
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