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排序方式: 共有106条查询结果,搜索用时 15 毫秒
21.
Zhang Jianhua Wu Yue Zhuang Youyi Zhang Hanjie Wang Jian Li Haiyang He Pimo Bao Shining Liu Fengqin Y.Kuirexi Qian Haijie 《化学物理学报(中文版)》2001,14(1):107-112
The ethylene(C2H4)absorbs in molecular state on Ru (1010) surface stably below 200K. The dehydrogenated of ethylene occurs at 200K. The main product of the dehydrogenation of the absorbed ethylene is the acetylene (C2H2). After the dehydrogenation of the absorbed ethylene, the binding energies ofσCCandσCHbond have an increase of 0.5 and 1.1eV respectively. The C-C bonds of both ethylene and acetylene tilt in <0001> azimuth. 相似文献
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本文对HL-1装置放电中的逃逸电流进行了零维数值模拟。考虑了逃逸电子的产生和损失,电子及离子的能量平衡与粒子数平衡。数值结果与实验较为符合。 相似文献
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大景深多重全息术及其应用 总被引:3,自引:0,他引:3
提出并实现服用一般He-Ne激光器记录的大景攀重全息术,这种技术是根据光源时间相干性的特点,在参考光上作光路补偿来扩大景深,并用旋转光楔调制两平面参考波,记录大景深物场的多重全息图,这是一种重像数可以选择的大景深多重全息术,文中给出理论分析和实验结果,理论分析与实验结果是吻合的,文中还提出了用旋转光楔实现多路多参考光编码记录的多通道大景深全息干涉计量术,这种技术可用于研究大景深物场的时间序列动态过 相似文献
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一种新的多通道散斑照相术及其应用 总被引:5,自引:0,他引:5
提出了一种新的多通道散斑照相术,通过旋转光楔实现多通道散斑图记录。该方法不仅能在一张记录介质上记录物体动有一些状态的多通道散斑图,且用全场滤波分析时,能方便地同时给出所有通道的物变形信息,得到清晰高衬比的干涉条纹图。 相似文献
27.
An end-channel amperometric detector with a guide tube for working electrode was designed and integrated on a home-made glass microchip. The guide tube was directly patterned and fabricated at the end of the detection reservoir, which made the fixation and alignment of working electrode relatively easy. The fabrication was carried out in a two-step etching process. A 30 μm carbon fiber microdisk electrode and Pt cathode were also integrated onto the amperometric detector. The characteristics and primary performance of the home-made microchip capillary electrophoresis (MCCE) were investigated with neurotransmitters. The baseline separation of dopamine (DA), catechol (CA) and epinephrine (EP) was achieved within 80 s. Separation parameters such as injection time, buffer components, pH of the buffer were studied. Relative standard deviations of not more than 6.0% were obtained for both peak currents and migration times. Under the selected separation conditions, the response for DA was linear from 5 to 200 μM and from 20 to 800 μM for CA. The limits of detection of DA and CA were 0.51 and 2.9 μM, respectively (S/N=3). 相似文献
28.
Ni Youyi Zheng Jian Guo Qiuju Wang Hai Tagami Keiko Uchida Shigeo 《Journal of Radioanalytical and Nuclear Chemistry》2018,315(3):643-651
Journal of Radioanalytical and Nuclear Chemistry - In this study, we developed a method to evaluate the potentially bioavailable fraction of Pu in agricultural soils by determining their water... 相似文献
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Sun Y Gao J Zheng Z Su W Zhang Q 《Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy》2006,64(4):977-980
New members of family of Eu(III) complex based on the thenoylacetophenone have been synthesized and characterized. The compounds were found for high metal luminescence quantum yields and long luminescence lifetime, especially for compound with two crystal water, corresponding with other compounds containing two crystal water. The result is attributed to high molar absorption coefficients of the Eu(III) complex according to UV-vis and emission spectra. The high molar absorption coefficients balance quenching effect from OH oscillators of water contained in compound. 相似文献
30.
The purpose of this paper is to discuss the estimation of eigenvalues and the smallest singular value of matrices. Firstly, we prove that all the eigenvalues of arbitrarily complex matrix are located in one closed disk around of radius