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期刊Diastereoselective and enantioselective reduction of tetralin-1,4-dione
《Beilstein Journal of Organic Chemistry》E Peter K;#x000fc;ndig[][1];Alvaro Enriquez-Garcia[1]
BackgroundThe chemistry of tetralin-1,4-dione, the stable tautomer of 1,4-dihydroxynaphthalene, has not been explored previously. It is readily accessible and offers interesting opportunities for synthesis.
关键词:asymmetric  catalysis  ketone  reduction  tautomer 
期刊Bifunctional Ion Pair Catalysts from Chiral a-Amino Acids
《中国化学:英文版》2019年第11期1111-1119,共9页Hongyu Wang Changwu Zheng Gang Zhao 
What is the most favorite and original chemistry developed in your research group?Our research focuses on the field of asymmetric organocatalysis and natural product synthesis.Our work draws upon and impacts the desig...显示全部
关键词:synthesis. asymmetric organo 
期刊极低内部光学损耗975 nm半导体激光器被引量:2
《光学学报》2020年第19期114-118,共5页曼玉选 仲莉 马骁宇 刘素平 
通过对波导结构和P包层的掺杂分布进行优化,减少了光场与P包层掺杂区的交叠,从而减小了半导体激光器的内部光学损耗。同时使用宽带隙GaAsP作为势垒层可以减少有源区载流子泄露,实现了内部光学损耗为0.259 cm-1。所制备的975nm波长、100...显示全部
关键词:激光器 内损耗 高功率 非对称 掺杂 
期刊Denoising of Medical Images Using Multiwavelet Transforms and Various Thresholding Techniques
《信号与信息处理(英文)》2013年第1期24-32,共9页Abdullah Al Jumah Mohammed Gulam Ahamad Syed Amjad Ali 
The problem of estimating an image corrupted by additive white Gaussian noise has been of interest for practical reasons. Non-linear denoising methods based on wavelets, have become popular but Multiwavelets outperfor...显示全部
关键词:MULTIWAVELETS Noise THRESHOLDING Additive White Gaussian Noise SIGNAL-TO-NOISE Ratio Discrete MULTIWAVELET Transforms Chui Lian Symmetric asymmetric MULTIWAVELET TRANSFORM Bi-Hermite MULTIWAVELET TRANSFORM Modified Universal THRESHOLDING 
期刊Evaluating Methods for Discharge Prediction of Straight asymmetric Compound Channels
《地质资源与工程:英文版》2018年第5期217-227,共11页Xiaonan Tang 
Accurate prediction of flow discharge in a compound channel is increasingly important in river flood risk management.This paper evaluates four most recently developed 1-D methods for discharge prediction.The four meth...显示全部
关键词:OVERBANK flow COMPOUND CHANNEL asymmetric COMPOUND CHANNEL open CHANNEL MOMENTUM exchange 
期刊高可靠性无铝有源层808 nm半导体激光器泵浦源
《人工晶体学报》2021年第4期757-761,共5页刘鹏 朱振 陈康 王荣堃 夏伟 徐现刚 
山东省激光装备创新创业共同体项目。
针对高功率808 nm激光器泵浦源的应用需求,设计并制备了InGaAsP/GaInP材料体系的无铝有源区半导体激光器。使用双非对称的限制层及波导层结构,降低了P侧材料的热阻及光吸收。优化了金属有机化学气相沉积(MOCVD)中As和P混合材料的生长条...显示全部
关键词:无铝材料 高可靠性 INGAASP 808 nm 非对称 泵浦源 半导体激光器 
期刊On the Preponderance of Matter over Antimatter
《现代物理(英文)》2015年第11期1441-1451,共11页Golden Gadzirayi Nyambuya 
Quantum electrodynamics (QED) is built on the original Dirac equation, an equation that exhibits perfect symmetry in that it is symmetric under charge conjugation (C), space (P) and time (T) reversal and any combinati...显示全部
关键词:ANTIMATTER asymmetric CP-Violation Curved SPACETIME DIRAC EQUATION 
期刊Practical Synthesis of MDM2 Antagonist RG7388. Part 2: Development of the Cu(I) Catalyzed [3 + 2] asymmetric Cycloaddition Process for the Manufacture of Idasanutlin
《Organic Process Research & Development》Gösta Rimmler[†]; Andre Alker[‡]; Marcello Bosco[†]; Ralph Diodone[†]; Dan Fishlock[†]; Stefan Hildbrand[†]; Bernd Kuhn[‡]; Christian Moessner[†]; Carsten Peters[†]; Pankaj D. Rege[*][†];Markus Schantz[†]
A concise catalytic asymmetric synthesis of idasanutlin (1) was developed in which the key pyrrolidine core, containing four contiguous stereocenters, was constructed via a Ag/MeOBIPHEP promoted [3 + 2] cycloaddition ...显示全部
关键词:asymmetric  copper-catalyzed  idasanutlin  silver-catalyzed  [3 + 2] cycloaddition 
期刊A highly enantioselective Strecker reaction catalyzed by titanium-N-salicyl-β-aminoalcohol complexes
《Tetrahedron》Banphavichit, Vorawit; Mansawat, Woraluk; Bhanthumnavin, Worawan; Vilaivan, Tirayut
<i>N</i>-salicyl-&#946;-amino alcohols <b>1</b> were synthesized and evaluated as ligands for catalytic asymmetric Strecker reactions. <i>N</i>-Benzhydrylaldimines derived from ...显示全部
关键词:asymmetric  Catalyst  Imine  Hydrocyanation 
期刊asymmetric Resistive Switching Effect in Au/Nb:SrTiO<sub>3</sub> Schottky Junctions
Jiachen Li[1]; Guang Yang[2]; Yonghui Wu[3]; Weifeng Zhang[4]; Caihong Jia[5]
asymmetric resistive switching processes are observed in Au/Nb:SrTiO<sub>3</sub> (NSTO) Schottky junctions. The SET transition from high‐ to low‐resistance state occurs at 10 ns under +2 to +5 V bias, wh...显示全部
关键词:asymmetric  Au/Nb:SrTiO3 Schottky junction  resistive switching effect 
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