搜索结果: 1-15 共查到“化学 the Presence”相关记录22条 . 查询时间(0.136 秒)
An efficient and green approach for the synthesis of vinyl aryl ethers in the presence of guanidine hydrochloride
Guanidine hydrochloride dialkyl acetylenedicarboxylates vinyl aryl ether
2010/12/29
A stereoselective procedure for vinyl aryl ether bond formation by direct coupling of dialkyl acetylenedicarboxylates and substituted phenols or naphthols under mild reaction conditions has been devel...
An efficient and green approach for the synthesis of vinyl aryl ethers in the presence of guanidine hydrochloride
Guanidine hydrochloride dialkyl acetylenedicarboxylates vinyl aryl ether O-vinylation water solvent
2010/12/20
A stereoselective procedure for vinyl aryl ether bond formation by direct coupling of dialkyl acetylenedicarboxylates and substituted phenols or naphthols under mild reaction conditions has been devel...
Synthesis of Piperazine Based Polyimide in the Presence of Ionic Liquids
Ionic liquids polyimide catalysts condensation polymers
2010/4/8
Ionic liquids derived from imidazolium, pyridinium, and alkylammonium salts were investigated not only as catalysts but also as solvents in polymerization of 1,4-bis(3-aminopropyl) piperazine. Results...
Development of Signaling Echo Method for Cell-based Quantitative Efficacy Evaluation of Anti-cancer Drugs in Apoptosis without Drug Presence Using High-precision Surface Plasmon Resonance Sensing
Signaling Echo Method Cell-based Quantitative Efficacy Evaluation Anti-cancer Drugs
2010/9/20
We propose a rapid and label-free quantitative evaluation of anti-cancer drug efficacy in apoptosis using live cancer cells cultured on a sensor chip. The resultant custom-made, high-precision surface...
Improved photostability of PVC films in the presence of 2-thioacetic acid-5-phenyl-1,3,4-oxadiazole complexes
Photostabilizer PVC oxadiazole
2010/4/9
The photostabilization of poly(vinyl chloride) (PVC) films by 2-thioacetic acid-5-phenyl-1,3,4-oxadiazole with Sn(II), Ba(II), Ni(II), Zn(II), Cu(II), and Ca(II) complexes was investigated. PVC films ...
High Yielding Oxidative Deprotection of Silyl and Pyranyl Ethers to Their Corresponding Carbonyl Compounds with Strontium Manganate in the Presence of Aluminium Chloride in Solution and Under Solvent-Free Conditions
Strontium manganate aluminium chloride solvent-free conditions oxidative deprotection tetrahydropyranyl ethers
2010/4/13
Strontium manganate (SrMnO4) in the presence of aluminium chloride (AlCl3) is an efficient reagent for the high yielding oxidative deprotection of aromatic and aliphatic silyl and pyranyl ethers into ...
A Convenient and Efficient Synthesis of N-Acylsulfonamides in the Presence of Silica Phosphoric Acid under Heterogeneous and Solvent-Free Conditions
N-acylsulfonamide solvent-free silica phosphoric acid heterogeneous condition N-acylation
2010/4/8
Reaction of sulfonamides with carboxylic acid anhydrides and chlorides in the presence of silica phosphoric acid provided N-acyl sulfonamides in good to high yields. All reactions were performed under...
Synthesis of Piperazine Based Polyimide in the Presence of Ionic Liquids
Ionic liquids polyimide catalysts condensation polymers
2010/4/8
Ionic liquids derived from imidazolium, pyridinium, and alkylammonium salts were investigated not only as catalysts but also as solvents in polymerization of 1,4-bis(3-aminopropyl) piperazine. Results...
期刊信息
篇名
“Synergistic plasma-catalytic reduction of NOx over In-Fe2O3-HZSM-5 in the presence of excess oxygen at low temperatures.”
语种
英文
撰写或编译
作者
牛金海,朱爱民,杨学锋,孙琪,徐勇
第一作者单位
刊物名称
Catalysis Letters (SCI收录...
“Plasma-enhanced low-temperature C2H4-SCR of NOx over Cu-ZSM-5 in the presence of excess oxygen.”
2007/7/28
期刊信息
篇名
“Plasma-enhanced low-temperature C2H4-SCR of NOx over Cu-ZSM-5 in the presence of excess oxygen.”
语种
中文
撰写或编译
作者
孙琪,朱爱民,杨学锋,牛金海,徐勇,宋志民
第一作者单位
刊物名称
Appl. Catal. B: Environ. (SCI收录期刊), Submitted...
P123 / SDS水溶液中碳酸钙结晶及形貌的研究（Synthesis of CaCO3 with Different Morphologies in Presence of P123/SDS Solution）
碳酸钙 形貌 胶束 晶体生长
2010/8/25
Different morphologies of CaCO3 have been synthesized through controlling the molar ratios of the P123 and SDS in the mixture solution. The morphologies and structures of samples have been characteriz...
Voltammetric and Flow Injection Amperometric Determination of Cysteine at a Glassy Carbon Electrode in the Presence of Copper(II) Ions
Voltammetric Flow Injection Amperometric Determination Copper(II) Ions
2010/4/21
The voltammetric behaviour of cysteine was investigated in the presence of Cu(II) ions at a rotating glassy carbon electrode (RGCE). Two reduction peaks related to the successive reduction of the cyst...
Metallation of Mesitylene by Organolithium Compounds in the Presence of Lithium Polyether Alkoxides
Metallation of mesitylene Polyether alkoxide Organolithium compounds Regioselectivity
2010/4/22
The catalytic effect of polyether alkoxides (PEAs) on the activity Of organolithium compounds as a metallating agent studied. The sites of metallation as mono, di, tri, and gem metallation at three di...
Spectrophotometric Determination of Cobalt, Nickel Palladium, Copper, Ruthenium and Molybdenum Using Sodium Isoamylxanthate in Presence of Surfactants
Sodium isoamylxanthate surfactants metal ions environmental samples
2010/6/27
A direct method has been developed for the spectrophotometric determination of microamounts of Co(II), Ni(II), Cu(II), Pd(II), Ru(III) and Mo(VI) using sodium isoamylxanthate as a reagent in the prese...
Fluorimetric Detection of Insulin in the Presence of Eu(III) - {Pyridine - 2,6 - Dicarboxylate} Tris Complex
Insulin Fluorescence Spectroscopy Eu(III) - { Pyridine - 2,6 - Dicarboxylate } Tris Complex Stern-Volmer Plots Apparent Binding Constant
2010/6/27
Bovine insulin solutions (pH=9.3) have maximum absorption at 278 \pm 2 nm and an intrinsic emission at 305 nm when excited at 282 nm. The relative fluorescence intensities show linear dependence on it...