Results 101 to 110 of about 52,444 (177)
, 2010 将在40℃条件下培养5d和10d的铜绿微囊藻(Microcystis aeruginosa FACHB905)转接至新鲜培养基,以25℃培养条件下转接的相同细胞密度的培养物为对照,然后均置于相同的培养条件下恢复生长.研究了各培养物的生长、叶绿素a浓度、光系统Ⅱ的光化学效率(Fv/Fm)、净光合速率和呼吸速率的变化.结果表明,在40℃高温下分别培养5d和10d,铜绿微囊藻的比生长速率、Fv/Fm等指标均受到显著抑制 ...
李敦海, 秦红杰
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近25 a 银川市城市化进程中热力景观格局演变分析 [PDF]
, 2016 ： Based on the Landsat images and statistical data，in this paper the urbanization process and thermal landscape dynamics of Yinchuan City were analyzed． The objectives of this study were as follows: ① To analyze the spatial and dynamic characteristics of
吕荣芳, 张建明, 王浩, 王鹏龙
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Failure analysis of four tube in power station boiler [PDF]
, 2015 火力发电厂是我国供电主体，约占总体发电量的70%。大型火电厂的安全事关电网的安全运行，而火电厂中的锅炉运行的可靠性是影响发电厂运行可靠性的首要因素，尤其是锅炉四小管的损坏泄漏对机组的安全运行影响最大，是火力发电厂的常见事故，一般占机组故障的60%-70%。锅炉经常由于四小管设计、制造、安装、运行、修理改造、管理等环节的问题以及长期在高温、高压、腐蚀、冲刷等恶劣条件下运行等原因而造成爆管并导致停炉。只有掌握四小管各种类型爆管的失效机理，才能有的放矢开展监督检验工作，寻找有效的管理和技术防治对策 ...
左仁红
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Behaviour of Carbide Tools in hot Machining [PDF]
, 1954 In turning steels at elevated temperatures, the specific cutting force becomes remarkably small as compared with that at the room temperature, but the tool life should be taken into account at the same time.
村中 利吉
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Gaoya dianqi, 2016 多年来,测量高压电器中气体绝缘产品的内部温度一直是比较困难的。文中提出了一种采用荧光余辉光纤传光型温度传感器测量特高压直流电压测量装置内部温度的方法,该方法能够准确测量装置运行时的内部温度。文章重点阐述了该温度传感器选取、传感器埋设方式和布置以及具体的试验方法。该试验方法可以判断特高压直流电压测量装置内部温度的情况,同时也可为测量高压电器中气体绝缘产品的内部温度提供参考。
冯建华, 王珊, 雷鹏
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Studies on the physiological responses to temperature in three different ecotypes of tomato [PDF]
, 1988 筑波大学University of Tsukuba博士（農学）Doctor of Philosophy in Agricultural Science1988【要旨 ...
45422, Zen, Hajun, 全, 夏俊
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高性能低阈值高温无致冷1.3μm AlGaInAs量子阱激光器
Guangtongxin yanjiu, 2001 讨论了影响激光器高温特性的主要因素 ,提出了在 1 .3μm高温无致冷 Al Ga In As应变量子阱激光器中采用倒台脊波导 （ RM- RWG）结构可以改善激光器高温无致冷的工作特性 ,研制出了 RM- RWG结构的 1 .3μm高温无致冷 Al Ga In As应变量子阱激光器 ,其阈值电流为 6m A,特征温度达到 95 K（ 2 5℃～ 85 ...
郑鹏 +4 more
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Effect of Air or Medium Temperature on Occurrence of Leaf-yellow-spot in Chrysanthemum 'Seikou-no-makoto' [PDF]
, 2012 Leaf-yellow-spot, a physiological abnormality occurring in leaves of several chrysanthemum (Chrysanthemum x morifolium) cultivars is a very serious production problem in Japan.
Fujita, Shino +3 more
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Effects of shading and high-temperature treatments on appearance quality of brown rice and palatability of cooked rice [PDF]
, 2012 We examined the appearance quality and palatability of milled rice for each grain-thickness group. The rice cultivars, Nipponbare and Hinohikari, were cultivated at the paddy field of Field Science Center, Okayama University in 2009. For high-temperature
Ishizuki, Yuuki, Saitoh, Kuniyuki
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Guangtongxin yanjiu, 2013 高折射率棒光子带隙光纤受高折射率填充材料的影响很大,对温度、外加电场等参数非常敏感。为获得高灵敏度的光子晶体光纤温度传感,提出了在其包层空气孔注入温敏液体的方法,并利用全矢量有限元法对提出的方法进行了仿真。仿真结果表明,随着温度的升高,光纤的有效折射率减小,模场面积增大,温度灵敏度能达到20.2dB/m/℃。
冯小刚, 施伟华, 谭经文
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