Results 41 to 50 of about 53,872 (143)
Zhongguo shiyan zhenduanxue, 2004 目的研究亚低温状态下,大鼠急性脑缺血时氧自由基超氧化物歧化酶（SOD）和一氧化氮（NO）、一氧化氮合酶（NOS）的改变,探讨亚低温对缺血脑组织的保护机制。方法将45只Wistar大鼠随机分为9组,假手术组5只,缺血组及亚低温组又根据缺血、亚低温时间不同分为3h、24h、48h、72h亚组（各组均为5只）。动物模型参照Longa、Koizumi和刘亢丁等人的方法,采用颈内动脉线栓法制备大脑中动脉闭塞（MCAO）模型。结果比较缺血组和亚低温组,可见亚低温组栓塞侧脑组织SOD的生成和释放明显增加 ...
孙宏霞, 付铁娟, 刘亢丁
doaj
Anode‐Free Alkali Metal Batteries Under Extreme Temperatures
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Anode‐free alkali metal batteries (AFAMBs) have attracted considerable interest as promising candidates for next‐generation energy storage systems, owing to their high energy density and simplified manufacturability. Extending their reversible and stable operation to low‐temperature (LT) and high‐temperature (HT) environments is crucial for ...
Sicong Wang +7 more
wiley +1 more source
综合生理学和蛋白质组学分析揭示了小麦籽粒对孕穗期低温胁迫的响应
Journal of Integrative Agriculture, 2023 semanticscholar +1 more source
Uncovering correlates of decline and critical refuges for a threatened terrestrial mammal
Conservation Biology, Volume 40, Issue 4, August 2026.Abstract Globally, the geographic ranges of numerous species are contracting. Identifying spatiotemporal patterns of threat impact can illuminate why species decline in some parts of their range but persist in others. We developed a correlative approach to identify species’ response thresholds and locate ecological refuge areas associated with ...
Natalya M. Maitz +5 more
wiley +1 more source
Gongye shui chuli, 2009 简述了氧气厂低温冷却水系统流程。通过对补充水水质、低温水系统流程、工艺控制条件等的研究,分析了低温水系统结垢原因,并提出了具体的解决方法。
郝丽梅 +6 more
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Dianci bileiqi, 2018 对低温环境的适应性是部分地区避雷器在线监测装置运行中必然遇到的问题,需要研究相应的低温试验方法来确保监测装置在低温环境下的运行可靠性和测量准确性。根据自然环境低温分布特点及对电网影响的程度,总结了适用于电力系统的低温环境分类,可分为三类:-55℃-45℃,-45℃-20℃,-20℃0℃。根据避雷器在线监测装置结构,分析了低温环境对状态监测装置运行可靠性的影响因素,建议使用纯度较高的硅橡胶（VQM）和三元乙丙（EPDM）作为密封圈材料,建议使用温度特性更好的元器件来设计电源、采集系统等电子电路 ...
汤霖, 黄佳瑞, 侯文君
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Enhanced Magnetocaloric Effect in Tb‐Co‐Ni Magnets via Chemical Pressure
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Magnetic refrigeration materials are significantly needed in versatile modern industries, including scientific research, aerospace, and health care, due to their potential applications in gas liquefaction and storage. Herein, a significantly enhanced magnetocaloric effect with a suitable operation temperature range of 53–114 K and a giant ...
Lei Xi +11 more
wiley +1 more source
四川大学学报. 自然科学版, 2015 本文测定并比较了低温（4℃）和高温（40℃）胁迫下,麻疯树幼苗叶片中的丙二醛、脯氨酸、可溶性糖、活性氧水平以及活性氧清除酶类的活性变化.研究发现在低温或高温胁迫下,活性氧（H2O2、O2-）含量均呈现出先保持不变后上升的趋势,而SOD、CAT、POD活性先上升后降低.在低温胁迫下,MDA、脯氨酸和可溶性糖含量随着胁迫时间增长而逐渐升高;而高温胁迫虽使MDA、脯氨酸含量增大,但变化趋势不如受冷胁迫的麻疯树变化明显,且高温胁迫未使可溶性糖含量发生明显变化 ...
蒋楠 +5 more
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Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Because of superior transportability and high energy capacity, methanol is regarded as a potential hydrogen carrier. Photocatalytic methanol dehydrogenation offers a sustainable and cost‐effective method for releasing hydrogen. Conventional photocatalysts face challenging obstacles, including the low catalytic efficiency and rapid ...
Rundong Chen +9 more
wiley +1 more source
[Research research on the use of melatonin in combination with therapeutic hypothermia for the treatment of neonatal hypoxic-ischemic encephalopathy]. [PDF]
Zhongguo Dang Dai Er Ke Za Zhi, 2023 Liu YX, Xia SW.
europepmc +1 more source