Results 41 to 50 of about 9,749 (141)
野生动物学报, 2016 为研究夏季高温环境是否对小熊猫的生理机能产生影响,在2013年6～8月期间对小熊猫的体温和心率于上、下午进行测量,体重约隔15 d空腹进行称量,并于高温开始前后采血测定生化指标碱性磷酸酶(AKP)、磷酸激酶(CK)、谷丙转氨酶(ALT)、谷草转氨酶(AST)。结果表明:6月与7、8月间的温度存在显著差异,因而6月与7、8月可认为是夏天高温开始前、后的阶段。小熊猫个体间的体温存在差异,不同月份间的体温、心率不存在显著差异,随着环境温度升高小熊猫的体温、心率未随之有显著变化,体重也未明显减轻 ...
汪丽芬 俞红燕 朱 岩 孙伟明
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A Study on the Construction of Art Markets in today's China [PDF]
, 2007 近年来，伴随我国经济的高速发展和民众艺术热情的不断高涨，中国各地的艺术市场呈现出一派供需两旺的热闹景象。作为一块充满希望和与机遇的且深具发展潜力的热土，中国的当代艺术市场正吸引着社会各界的强烈关注。现阶段，零星地片断式地讨论中国艺术市场的论文不少，但观察者多以水平的视线进行观察，很难做到把握好整个艺术市场的全局。本文本着从整体上促进中国艺术市场良性运作的目的，拟对当代中国艺术品市场交易链上的各个环节进行细致的观察，运用艺术学、经济学和市场学的相关理论知识，从艺术创作领域中创作主体的心态调节 ...
朱科苗
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Shear characteristics and mesoscopic damage mechanism of long time soaking red sandstone under loading and unloading conditions [PDF]
The bank slope rock mass below the flood control restricted water level (145 m) in the Three Gorges Reservoir area has experienced long-term immersion in the process of reservoir water lifting and lowering; the water level changes lead to the rock mass ...
Binghao ZHOU +4 more
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Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Zirconium dioxide (ZrO2) thin films are critical materials owing to their thermal stability, mechanical durability, and optical transparency enabling applications in photonic, sensing, and electronic devices. However, achieving uniform deposition via plasma‐enhanced chemical vapor deposition (PE‐CVD) has remained challenging due to poor ...
Nour Manafikhi +4 more
wiley +1 more source
Fracture network complexity of tight sandstone and its influencing factors [PDF]
Objective Fracture network analysis plays an important role in oil and gas exploration and development. However, complexity analysis of tight sandstone fracture networks and their control factors is relatively lagging.
FENG Xingqiang +4 more
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Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Additively manufactured AlCoFeNi series eutectic high‐entropy alloys (EHEAs) exhibit nonequilibrium dual‐phase microstructure in the as‐printed state, allowing them to be easily tailored through annealing to explore their strength–toughness potential.
Huidong Wu +13 more
wiley +1 more source
In vitro culture, cryopreservation, and field reintroduction of the endangered Mingan thistle
Conservation Biology, Volume 40, Issue 2, April 2026.Abstract Current plant conservation efforts are hindered by, for example, poor seed germination, low viability, and insufficient propagation and preservation technologies. To address these problems, we devised an approach to plant conservation that integrates conservation, preservation, and restoration (CPR), which uses advanced in vitro techniques. We
Mukund R. Shukla +4 more
wiley +1 more source
Macro-mesoscopic perspective damage characteristics and energy-damage constitutive model of coal-rock composite structures subjected to cyclic loading [PDF]
During deep coal mining processes, periodic mining disturbances cause the neighboring coal strata to bear the effects of cyclic loading and unloading, making it essential to study the mechanical responses and macro-micro failure characteristics of the ...
Chengtao FENG +5 more
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Genomic responses to increased temperature and pollinator selection in Brassica rapa L.
New Phytologist, Volume 250, Issue 2, Page 1231-1247, April 2026.Summary Rapid environmental change reshapes both abiotic stress and biotic interactions, yet it remains unclear how these combined forces structure plants' genomic adaptation. In particular, the joint influence of temperature and pollinator identity, two ecological axes undergoing simultaneous global shifts, has rarely been quantified at genomic ...
Yanqian Ding, Florian P. Schiestl
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Jianzhu Gangjiegou Jinzhan, 2017 梁柱全焊节点在建筑钢结构中广泛应用,其火灾后受力性能对整个结构灾后承载安全至关重要。通过5个梁柱全焊节点试件高温冷却后的低周反复加载试验,研究了高温过火对其承载力、延性和耗能能力的影响规律。试验过火温度介于500800℃之间,冷却方式为自然冷却。试验结果表明,所有试件均发生梁柱翼缘对接焊缝处的断裂破坏。高温冷却后试件的抗弯承载力较未过火试件有所降低,延性和耗能能力有所提升,变化幅度统一呈现随过火温度的升高先增大后减小的变化规律。当过火温度为700℃时,节点承载力降低最大,降低幅度约为20 ...
陈颖, 朱美春, 程亮
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