Results 31 to 40 of about 386,854 (141)
Journal of Adolescence, Volume 98, Issue 5, Page 1715-1736, July 2026.ABSTRACT Introduction Following rapid iterations in media technologies, Chinese millennials (born between 1980 and 1995) find themselves in a paradoxical state where digital saturation exists alongside fatigue, making them central practitioners of digital minimalist behavior.
Chao Zhang, Yinze Hao, Jingwen Li
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Gongye shui chuli, 1990 从分析沉淀气浮过程的热力学、动力学和有关的机理出发,利用射流溶气、布气板充气及旋流原理,研究出的一种有高负载能力,高气浮分离效率的新型回收处理重金属离子废水的设备——旋流——充气气浮系统。气浮分离效率在97%以上,比常规加压溶气气浮系统快十倍以上,能耗减少30%。
朱锡海 +4 more
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, 2014 本发明涉及金属/空气电池，具体地说是金属/空气电池空气电极集流体。本发明所述集流体包括由完整的泡沫镍制成的第一集流单元和泡沫镍上开设有孔的第二集流单元叠压而成。本发明与现有技术相比，有利于提高金属/空气电池空气电极在大电流放电时的集流能力，同时不影响空气电极中的空气扩散性能，有利于金属/空气电池大电流放电时电池性能的提高，同时该集流体的制备方法简单 ...
王二东, 孙公权, 舒朝著
core
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
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, 2006 在不同的反向射流喷射角度条件下,对反向射流混合加热方案的混合效果进行了实验研究.采用空气和氢气燃烧混合物作为超声速载气流,常温下的空气作为反向射流.将混合前后流场的温度分布作为衡量载气流与反向射流混合效果的标志.实验结果表明:混合均匀度随混合距离的增加而提高;反向射流的喷射角度在40°角附近时混合均匀度最佳;增大反向射流初始压力可有效提高反向射流与载气流的流量比 ...
冯珩 +4 more
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, 1984 介质流动对于气体激光功率输出的大幅度提高,起着决定性的作用。分析表明:表征连续波激光的饱和强度和光功率密度(或小信号增益系数)均随流速而非线性地增大,并趋向各自的极限值;饱和强度的增加量约不超过10倍;光功率密度的大幅度增加起因于激励能在气流中的累积。这些结论与常用理论关于饱和强度随流速线性且无限地增大,光功率密度增大起因于饱和强度增大的结论并不相同 ...
高智
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Wafer‐Scale Amorphous g‐C3N4 With Broadly Tunable Dielectric Properties for 2D Electronics
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Two‐dimensional (2D) semiconductors are regarded as promising candidates for next‐generation electronics due to their superior electrostatic control; however, their performance is severely constrained by the lack of suitable dielectric materials.
Binyin Gao +13 more
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Dianci bileiqi, 2017 为了解决架空输电线路的雷击问题,研制了一种对建弧率有强烈抑制效果的爆炸强气流灭弧防雷间隙装置,使雷电流通过闪络路径流入大地,同时喷射出大量高压、高速电负性气体迅速熄灭工频续流电弧。建立了爆炸强气流耦合工频电弧的数学模型,运用有限元分析软件AUTODYN分别对爆炸气流场和耦合气流场进行仿真。进行了爆炸强气流截断工频续流电弧试验,并借助摄像机和示波器模拟记录输电线路雷击时灭弧防雷间隙中工频续流电弧的发展变化情况。试验结果表明,爆炸强气流灭弧防雷间隙能在0.4 ms内完全熄灭电弧并抑制重燃。
李世荣 +5 more
doaj
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Light‐activated gas sensors hold significant potential in environmental monitoring and smart Internet of Things (IoT) owing to their advantage in room temperature operation. Nevertheless, due to a narrow light absorption range, high photocarrier recombination rate, and weak redox activity of the sensing material, the performance enhancement of
Jinyong Hu +5 more
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