Results 11 to 20 of about 1,549,788 (235)
, 1989 我国目前太阳能干燥器的总采光面积约为7200米~2，其中整体式太阳能干燥器约占三分之一。本文概述了整体式太阳能干燥器的结构、工作原理及热工性能。通过实验研究，提出以温升保证率、脱水率、脱水比及热利用效率作为太阳能干燥器热工性能的评价指标，并提出了太阳能干燥器热利用效率的计算方法及公式。针对实验干燥器，综合了该装置脱水率计算经验公式 ...
仝兆丰, 李宗楠
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LNM材料力学性能测试中心（1）——为什么要做材料力学性能测试？
, 2013 编者按：在中国科学院“知识创新工程”的持续支持下，力学研究所的装备建设获得了长足的进展，特别是公共实验平台体系的形成为研究与开发工作铺垫了坚实的物质基础。本刊将在“漫步力学所”栏目中，陆续介绍力学所公共实验平台体系的组成、功能与应用。本期将介绍非线性力学国家实验室(LNM)公共实验平台下属的材料力学性能测试中心。 LNM材料力学性能测试中心(1)为什么要做材料力学性能测试？郇勇 王柏懿 一 ...
郇勇, 王柏懿
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Beyond Universalism: A Contextual Approach to Comparative Public Administration
Public Administration and Development, EarlyView.ABSTRACT In this essay, I advocate for a contextual approach to comparative public administration, arguing that effective governance reform requires moving away from universal models to embrace local political, socioeconomic, and institutional realities.
XiaoHu Wang
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An urban evolved invasive plant tolerates experimental climate change
PLANTS, PEOPLE, PLANET, EarlyView.Urbanization may drive invasive species evolution, resulting in greater invasion risks as global conditions change. We compared urban populations of the invasive Erigeron annuus in Zagreb, Croatia, to surrounding rural populations and found that urban‐evolved populations were more tolerant of experimental warming and drought than rural populations ...
S. Luke Flory +4 more
wiley +1 more source
PLANTS, PEOPLE, PLANET, EarlyView.The effect of air pollution on plants is still underexplored, especially belowground. We used a field facility that released diesel exhaust and ozone at concentrations equivalent to those near a busy road in Reading, UK, to measure belowground gas exchange of Scots pine together with feeding by large pine weevils, a major pest of conifers.
Tihomir Simin +7 more
wiley +1 more source
, 2016 将多种新能源联合开发利用,使之能够取长补短,是未来新能源发展的重要方向之一。世界第一座太阳能–地热能联合电厂已经建成发电,与其相关的研究工作也已蓬勃开展。从已有的研究结果看,太阳能和地热能主要有两种结合方式——以地热能为主的联合发电系统和以太阳能为主的联合发电系统;研究内容主要围绕提高太阳能、地热能的利用效率,增加系统发电量而展开,根据系统处于稳态和非稳态时不同的运行特征,评估系统的热力性能和经济性能,指出保证系统长期稳定运行应考虑的问题。研究表明 ...
陆振能 +5 more
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Wildlife Letters, EarlyView.Using radiotelemetry, we found that the movement and home range of the endangered Sacalia bealei varied significantly across reproductive classes and seasons, with males exhibiting greater movement than females during wet and mating seasons. The species exhibits strong aquatic dependence, favoring deep pools interspaced among riffle‐pool sequences ...
Wing Sing Chan +3 more
wiley +1 more source
Wildlife Letters, EarlyView.Reported annual per‐capita harvest of muskrats (PCHM) decreased as wetland complexity (total number of wetland patches) decreased in 13 state and federal wetland areas in the Midwest, USA. Our results support the hypothesis that regional‐scale declines in the abundance of muskrats are likely associated with the losses to wetland habitats throughout the
Tim L. Hiller +5 more
wiley +1 more source
Wildlife Letters, EarlyView.The study explores how beavers (Castor spp.) affect endangered freshwater pearl mussels (Margaritifera margaritifera) in European rivers. Beaver dams can harm small, fragmented mussel populations by reducing flow, increasing sediment, and potentially limiting host fish movement, while larger populations may benefit from improved bed stability and ...
Louise Lavictoire +2 more
wiley +1 more source
Wildlife Letters, EarlyView.We staged dyadic interaction trials between two kangaroo rat species threatened by habitat loss to test whether one species dominates in direct interactions in the field. We found that Stephens’ kangaroo rat (Dipodomys stephensi) residents and intruders were dominant over Dulzura kangaroo rat (Dipodomys simulans). These results suggest that D. simulans
Janine N. Straughan +2 more
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