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浏览/检索结果: 共9条,第1-9条 帮助

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Silver-catalyzed multicomponent reactions for the construction of gamma-carbonyl-alpha-amino acid derivatives 期刊论文  OAI收割
TETRAHEDRON LETTERS, 2020, 卷号: 61, 期号: 39
作者:  
Yuan, Chunming;  Zhao, Xiaohui;  Nan, Guangming
  |  收藏  |  浏览/下载:12/0  |  提交时间:2020/11/25
Heterogeneous Cross-Coupling over Gold Nanoclusters 期刊论文  OAI收割
NANOMATERIALS, 2019, 卷号: 9, 期号: 6, 页码: 17
作者:  
Shi, Quanquan;  Qin, Zhaoxian;  Xu, Hui;  Li, Gao
  |  收藏  |  浏览/下载:52/0  |  提交时间:2019/12/02
A Critical Review on Carbon-Carbon Coupling over Ultra-Small Gold Nanoclusters 期刊论文  OAI收割
ACTA PHYSICO-CHIMICA SINICA, 2017, 卷号: 33, 页码: 1297-1309
作者:  
Zhou Yang;  Li Gao
  |  收藏  |  浏览/下载:17/0  |  提交时间:2017/10/29
Improving the Catalytic Activity of Au-25 Nanocluster by Peeling and Doping 期刊论文  OAI收割
CHINESE JOURNAL OF CHEMISTRY, 2017, 卷号: 35, 期号: 5, 页码: 567-571
作者:  
Li, Man-Bo;  Tian, Shi-Kai;  Wu, Zhikun
收藏  |  浏览/下载:27/0  |  提交时间:2018/06/04
Phosphine/phenylacetylide-ligated Au clusters for multicomponent coupling reactions 期刊论文  OAI收割
JOURNAL OF CATALYSIS, 2016, 卷号: 340, 页码: 287-294
作者:  
Haruta, Masatake;  Li, Gao;  Chen, Yongdong;  Liu, Chao;  Abroshan, Hadi
  |  收藏  |  浏览/下载:32/0  |  提交时间:2019/06/20
Response spectrum 0.9-2.65 m of In0.82Ga0.18As detectors by two-step growth technique (EI CONFERENCE) 会议论文  OAI收割
2012 International Conference on Material Sciences and Manufacturing Technology, ICMSMT 2012, October 5, 2012 - October 6, 2012, Dalian, China
作者:  
Zhang T.
收藏  |  浏览/下载:34/0  |  提交时间:2013/03/25
InP/In0.82Ga0.18As/InP heterostructure used for infrared detector were grown on (100) S-doped InP substrates using two-step growth technique by low temperature metal-organic chemical vapor deposition. The growth was performed using TMIn  TMGa  AsH3  and PH3 as growth precursors in a horizontal reactor. The substrates on a graphite susceptor were heated by inductively coupling RF power  their temperatures were detected by a thermocouple  and the reactor pressure was kept at 10000 Pa. The growth structure of detector included In0.82Ga0.18As buffer with the thickness of 100 nm  In0.82Ga0.18As absorption layer with the thickness of 2.8 m  and the InP cap with the thickness of 0.8 m. The planar type of p-i-n detector was fabricated by Zn diffusion. The properties of In0.82Ga0.18As detector were studied  the curves of the I-V characteristics  the range of response spectrum  and the detectivity (D*) were obtained. (2013) Trans Tech Publications  Switzerland.  
Non-linear compensation algorithm of LOS locating in aerial remote sensor (EI CONFERENCE) 会议论文  OAI收割
2011 International Conference on Electronic and Mechanical Engineering and Information Technology, EMEIT 2011, August 12, 2011 - August 14, 2011, Harbin, China
作者:  
Li J.;  Li Y.;  Li Y.;  Li Y.;  Li Y.
收藏  |  浏览/下载:33/0  |  提交时间:2013/03/25
A non-linear light-of-sight(LOS) locating compensation algorithm for certain aerial remote sensor is presented in this paper. The LOS locating system is composed of two main components  which are an inertial reference frame to provide coarse LOS locating and a 2-axis Fast Steering Mirror to remove the frame's residual error. The azimuth and elevation of LOS are both affected by the FSM two-degree-of-freedom rotation  which should be dealt with to raise the accuracy of LOS location. This paper extrapolates LOS locating algorithm of FSM by coordinate transformation  and gives corresponding deviation analysis for different LOS poiting angles. It is found that the angle deviation grows rapidly with range of FSM's travel enlarging  so the deviation must be eliminated. Through the data analysis for deviation  a non-linear compensation algorithm is proved effective to reduce the error of LOS significantly. Taking LOS changing in [-3 deg  3 deg] as an example  two analytic expressions are given  and the LOS locating accuracy rises by 34 times compared with non-linear compensation unused  and the cross coupling of LOS loating is 0.08%. 2011 IEEE.  
Rare-earth doped tungsten tellurite glasses and waveguides: Fabrication and characterization (EI CONFERENCE) 会议论文  OAI收割
Physics of Non-Crystalline Solids 10, October 15, 2004 - October 15, 2004, Parma, Italy
作者:  
Chen B.;  Chen B.
收藏  |  浏览/下载:28/0  |  提交时间:2013/03/25
Tungsten tellurite glasses doped with Er3+  Tm3+  Pr3+  and Ho3+ ions were prepared by melt quenching. The glass matrix was the same for all types of glasses and had a high sodium content in order to allow the fabrication of waveguides using an ion-exchange technique. The absorption spectra of the glasses were measured and the Judd-Ofelt parameters q were obtained from the experimental oscillator strengths of the f &rarr f transitions. Er3+ doped glasses showed a very high quantum efficiency when comparing the calculated radiative decay time with the measured lifetime of the 4I 13/2 metastable level. Ag+ Na+ ion-exchanged planar waveguides were successfully obtained in all types of glasses and characterized by the prism coupling technique. It turned out that the diffusion constant values are very similar for glasses containing different rare-earth ions with the same concentration  while  at least for the Er 3+ doped ones  the diffusion constant changes with the ions concentration. 2004 Elsevier B.V. All rights reserved.  
Explanations of the EPR parameters for the rhombic Cr3+-V-M and Cr3+-Li+ centers in A(2)MF(4) (A = K, Rb, Cs; M = Mg, Zn, Cd) crystals 期刊论文  OAI收割
Radiation Effects and Defects in Solids, 1998, 卷号: 145, 期号: 4, 页码: 337-344
S. Y. Wu; W. C. Zheng
收藏  |  浏览/下载:13/0  |  提交时间:2012/04/14