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Search Results: 1 - 10 of 60536 matches for " Yuan-Zhao Mo "
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The Application of New Chiral Ferrocene Ligands in Asymmetric Transfer Hydrogenation of Ketones  [PDF]
Yuan-Zhao Mo, Quan-Jun Wang, Hui-Fang Nie, Qiao-Feng Wang
International Journal of Organic Chemistry (IJOC) , 2018, DOI: 10.4236/ijoc.2018.81004
Abstract: Four easily available ferrocenyl chiral ligands have been screened firstly for ruthenium (II)-catalyzed asymmetric transfer hydrogenation of acetophenone with HCOOH/Et3N azeotrope as the hydrogen source. A moderate chemical yield of 1-phenylethanol with 83% ee was obtained when (RC, SFc)-1-(Diphe-nylphosphino)-2-[1-N-(3-methylpyridin-2-ylmethyl) ethyl] ferrocene (L1) was used. Particularly, both ruthenium and iridium could coordinate with L1 to accomplish the asymmetric reduction of series of aromatic ketones separately. The desired products were achieved with up to 86% ee.<
THEORETICAL ANALYSIS OF FREE ELECTRON LASER AMPLIFIER
自由电子激光放大器的理论分析

YIN YUAN-ZHAO,
尹元昭

物理学报 , 1983,
Abstract: In this paper, a detailed analysis on the operating mechanism and parameter properties of free electron laser amplifier (FELA) in the case of small signal is presented. The results show that FELA is in essence the interaction between the electron beam and the fast cyclotron wave. The cyclotron resonance condition of electron motion in the uniform axial and periodic transverse static magnetic fields significantly influences the interaction process. We have calculated numerically the central operating frequency, band width, small signal gain and wave number of the amplified electromagnetic wave as functions of the parameters of the amplifier (such as the voltage and current density of the electron beam, the intensities of axial and transverse static magnetic field). The way to optimize the design of FELA is also suggested. It is possible to obtain a small signal gain of 10-2 cm-1 with enough band width in the millimeter and submillimeter range of weve length following a proper design.
INCREASED GAIN OF FREE ELECTRON LASER WITH MAGNETIZED RELATIVISTIC ELECTRON BEAM
用磁化电子束提高自由电子激光器的增益

Yin Yuan-zhao,
尹元昭

电子与信息学报 , 1982,
Abstract: The stimulated Raman scattering of incident pump wave caused by a magnetized intense relativistic electron beam is analyzed theoretically. The results show that the magnetized beam can increase the gain of the free electron laser if the electron cyclotron frequency Q// in the axial static magnetic field is equal to the frequency ωi of the incident pump wave in the electron beam frame of reference. In this case the growth rate is ωi/ωi- Q// times of that for the unmagnetized beam.
The simulink simulation of time access services in SOIS
SOIS中时间访问服务的Simulink仿真

ZHANG Yuan-zhao,NING Hong,
张元昭
,宁洪

计算机应用 , 2007,
Abstract: Spacecraft Onboard Interface Services(SOIS) is a standard of onboard protocol and software services,the outmost layer of which defines the uniform services interface for user.Time access service is one of the basic services.A new method of Simulink/Stateflow modeling was proposed to simulate the Time Access Services.
Triad,a New Approach for Contaminated Site Management
Triad, 污染场地管理的新模式

DING Yuan-zhao,SHEN Xin,ZENG Hui,LI Xi-qing,
丁远昭
,沈欣,曾辉,李喜青

环境科学 , 2011,
Abstract: Remediation of a contaminated site is typically a time-consuming and expensive process.The traditional multistage approach of site management is an important contributor of this lengthy and costly process.The emergence of new characterization technologies and past experiences have led to the development of a new site characterization and remediation approach-Triad approach.In this paper,the three key components of the Triad approach,namely,systematic project planning,dynamic work strategy,and real-time meas...
基于物理内存的注册表逆向重建取证分析算法
A forensic analysis algorithm of registry reverse reconstruction based on physical memory

高元照,李炳龙,吴熙曦
GAO Yuan-zhao
, LI Bing-long, WU Xi-xi

- , 2016, DOI: 10.6040/j.issn.1671-9352.2.2015.140
Abstract: 摘要: 注册表结构重建与分析是Windows物理内存取证分析的重点和难点问题之一。首先通过分析注册表文件在硬盘中的逻辑特性,利用Windows系统调试工具分析注册表在内存中的数据结构特征,确立了在物理内存中定位注册表结构的方法;然后通过分析注册表项之间的树形关系,确定了注册表结构重建算法,并利用Graphviz可视化工具,设计出一种树形结构的可视化算法。实验结果表明,该算法能够实现对物理内存中注册表键名、键值信息的重建,基于获取的数据能够完成对系统中病毒的检测,并通过Graphviz可视化算法有效展示病毒感染系统的过程和结果。
Abstract: The reconstruction and analysis of the registry is one of the most important and difficult aspects of the Windows physical memory forensics. By analyzing the logical structure of the registry files in the hard disk and exploring the data structure features of the registry in the physical memory based on the Windows debugging tools, we proposed a clear and definite method to locate the registry physical addresses in the memory. Furthermore, by analyzing the tree-structured relationship between the entries of the registry, we designed a registry reconstruction algorithm and implemented a dendrogram visualization algorithm for the reconstructed registry based on Graphviz. The results of the experiment show that we can reconstruct of the names and values of the registry entries, retrieve the virus in the system based on the information we got, and finally display the process and results of the virus infection via the registry visualization
ER-α36, a Variant of ER-α, Promotes Tamoxifen Agonist Action in Endometrial Cancer Cells via the MAPK/ERK and PI3K/Akt Pathways
Sheng-Li Lin,Li-Ying Yan,Xin-Tian Zhang,Ju Yuan,Mo Li,Jie Qiao,Zhao-Yi Wang,Qing-Yuan Sun
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0009013
Abstract: Recently, a novel variant of ER-α, ER-α36 was identified and cloned. ER-α36 lacks intrinsic transcription activity and mainly mediates nongenomic estrogen signaling. Here, we studied the role of nongenomic estrogen signaling pathways mediated by ER-α36 in tamoxifen resistance and agonist action.
Performance Research on Magnetotactic Bacteria Optimization Algorithm with the Best Individual-Guided Differential Interaction Energy  [PDF]
Hongwei Mo, Lili Liu, Jiao Zhao
Journal of Computer and Communications (JCC) , 2015, DOI: 10.4236/jcc.2015.35016
Abstract:

Magnetotactic bacteria optimization algorithm (MBOA) is a new optimization algorithm inspired by the characteristics of magnetotactic bacteria, which is a kind of polyphyletic group of prokaryotes with the characteristics of magnetotaxis that make them orient and swim along geomagnetic field lines. The original Magnetotactic Bacteria Optimization Algorithm (MBOA) and several new variants of MBOA mimics the interaction energy between magnetosomes chains to obtain moments for solving problems. In this paper, Magnetotactic Bacteria Optimization Algorithm with the Best Individual-guided Differential Interaction Energy (MBOA-BIDE) is proposed. We improved interaction energy calculation by using the best individual-guided?differential interaction energy formation. We focus on analyzing the performance of different parameters settings. The experiment results show that the proposed algorithm is sensitive to parameters settings on some functions.

The Brunn-Minkowski Inequalities for Centroid Body  [PDF]
Jun Yuan, Lingzhi Zhao
Advances in Pure Mathematics (APM) , 2013, DOI: 10.4236/apm.2013.31013
Abstract: In [1], the authors established the Brunn-Minkowski inequality for centroid body. In this paper, we give an isolate form and volume difference of it, respectively. Both of these results are strength versions of the original.
Dual Quermassintegral Differences for Intersection Body  [PDF]
Lingzhi Zhao, Jun Yuan
Advances in Pure Mathematics (APM) , 2014, DOI: 10.4236/apm.2014.410061
Abstract: In this paper, we introduce the concept of dual quermassintegral differences. Further, we give the dual Brunn-Minkowski inequality and dual Minkowski inequality for dual quermassintegral differences for mixed intersection bodies.
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