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81.
82.
Zhang Ming CHEN Haiyan Chen Xiaosong Dai Shaojun Inoue Shinich OKAMOTO Hiroshi 《中国稀土学报(英文版)》2004,22(Z3)
Acrylic acid rare earth complex was prepared. Its chemical composition was determined by chemical and elemental analysis, and its structure as well as properties was characterized using IR, Fluorescence and UV spectrum, and its solubility was also investigated. Meanwhile a kind of elastic functional polymer with rare earth units in the side chains was produced. It is confirmed by IR spectrum that the Si-H bonds really react with acrylic acid rare earth. 相似文献
83.
Hiroshi Fujita 《Microscopy research and technique》1986,3(3):243-304
High voltage electron microscopy has shown numerous advantages for the study of natural science, including biology, but it is especially useful in materials science. The most important advantage for materials science is in-situ experiments on detailed processes of the same phenomena that occur in bulk materials. For such in-situ experiments, the specimens should be thicker than a few microns to observe the behavior of lattice effect. The maximum observable thickness of the specimens and other advantages markedly increase with increasing accelerating voltage, and since 1965, two 3 MV instruments have been installed. The present paper is mainly concerned with these 3 MV electron microscopes and their applications to new research fields. 相似文献
84.
Data from the Canadian National Population Health Survey (1994–1995) were used to evaluate the associations between work stress and major depression (N?=?7,344). Major depression was evaluated using the World Health Organization's Composite International Diagnostic Interview—Short Form. Work stress was measured by a 12-item scale in 6 dimensions. Significant associations between work stress and major depression were found. Gender may alter the type of work stress that is most strongly associated with major depression: psychological demands for men and physical demands for women. Some forms of work stress were more strongly associated with major depression in smokers than in nonsmokers. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
85.
Validity of the emotional Stroop task hinges on equivalence between the emotion and the control words in terms of lexical features related to word recognition. The authors evaluated the lexical features of 1,033 words used in 32 published emotional Stroop studies. Emotion words were significantly lower in frequency of use, longer in length, and had smaller orthographic neighborhoods than words used as controls. These lexical features contribute to slower word recognition and hence are likely to contribute to delayed latencies in color naming. The often-replicated slowdown in color naming of emotion words may be due, in part, to lexical differences between the emotion and control words used in the majority of such studies to date. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
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本文介绍了一个用于装配机器人的多传感器系统的设计思想和实现方案.提出了在装配任务导向下的监测任务规划模型,讨论了多物理传感器信息融合方法,多目标三层次感知信息决策模型,以及相应的实现系统层次结构.目的是在目标级上实现装配机器人系统的动态闭环. 相似文献
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随着无线通信的快速发展与普及,通信的安全问题成为研究的重点。针对数据吞吐量不高,但实时性要求严格的无线通信问题,设计了一个SM4的硬件电路模块。在Altera的Cyclone系列FPGA上占用1 875个逻辑单元,时钟频率100 MHz,吞吐率为266.5 Mb/s。将该模块应用于此通信链路中,并搭建了一个无线通信加密平台,实验结果表明SM4加密算法在物理层上的应用对于信息传输的安全具有重要意义。 相似文献