starting相关论文
To accomplish precise numerical simulation for transient problem in fluid machinery,a precise method was put forward tha......
The 300 GHz band, which is one of terahertz frequency bands, has low atmospheric attenuation and can be used for communi......
Progress in the systematic investigation of the biota of China,particularly over the past 50 years,has been most impress......
Beijing-The Treasures of an Ancient Capital Author:Yan Chongnian Price:RMB 780 Hardcover,306 pages Published by Blossom ......
目的 探讨自我效能在首发脑卒中患者健康素养与自我管理间的中介效应.方法 采用便利抽样方法对102例首发脑卒中患者应用HLS-SF12健......
In order to investigate the formation mechanism of tin ores associated with F-bearing granite, an ex-perimental study of......
It is very important to design the optimum starting time of water injection for the development of low permeability rese......
Need analysis is not only the important basis for the planning and innovation of teaching,but the starting point to carr......
<正> Ⅰ. INTRODUCTION The 1-vinylsilatrane is a compound with the presence of pentacoordinated silicon. Structural studi......
<正> The determination of elastlc-plastlc boundaries is the key to the solution of stress wave propagation. In general, ......
<正> Arteannuin 1 which was shown to be a new sesquiterpenoid containing a peroxide group is an antimalaria active princ......
<正> In general, in a coordinate complex the dative bond exits between the atoms of the donor and the acceptor. Mulliken......
<正> Methyl dihydrojasmonate is a very precious and widely used perfume. Its skeleton stlueture is similar to that of ma......
<正> The pyrrolizidine alkaloid monocrotaline-N-oxide is synthesized from monocrotaline (C16H23NO6). Many pyrrolizidine ......
<正> Yellow peach moth (Dichocrocis punctiferalis Cuenée) (Lepidoptera: Pyralididae) is the major pest of many fruit tr......
Preparation of TiO_2 thin films by MOCVD method is presented in this paper. A MOCVD system has been designed and built.......
Promulgated last year, the latest set of Chinese regulationson merger and acquisition (M&A) are now starting to beapplie......
One of the important characteristics of a close-boiling fractionating column is the requirement ofmuch longer start-up ......
The technical renovation project at Yunnan TinCo. Ltd. is running smoothly, according to anindustry report. The project......
[Objective]To explore the effects of plant hormone on seed germination of Gentiana rigescens Franch.[Method]With the mat......
请下载后查看,本文暂不支持在线获取查看简介。
Please download to view, this article does not support online access to view......
An efficient synthetic method was developed to synthesize 2-substituted benzimidazoles and benzo- xazoles with β-keto e......
A series of new amino alcohols derivatives was synthesized with 6-bromo-2-tetralone as starting material, 6-substituted-......
A Cu(Ⅰ)-catalyzed one-pot tandem reaction of 2-bromobenzyl bromides with 1,3-dicarbonyl compounds leading to 4H-chromen......
Three new iron(Ⅲ) phosphonate cage-like complexes with [Fe 4 ], [Fe 9 ] and [Fe 14 ] cores have been synthesized by sol......
An efficient one-pot procedure for the synthesis of multisubstituted xanthone derivatives using Fe-catalyzed reactions o......
(3S,4R)-Bengamide E(2) was synthesized starting from D-glucono-δ-lactone(3) and the key deoxygenation step from 13 to 1......
4-Amino-3-(p-chlorophenyl)-5-(p-methoxybenzyl)-4H-1,2,4-triazole:X-ray and DFT-calculated Structures
The title compound, 4-amino-3-(p-chlorophenyl)-5-(p-methoxybenzyl)-4H-1,2,4- triazole I , C16H15ClN4O), has been determi......
The first total syntheses of bipinnatone A and B have been achieved starting from commercially available phloroglucinol,......
A series of furoxan-based novel nitric oxide-donating ursolic acid(UA) derivatives(7a-f) were synthesized,and their cyto......
A facile synthetic route of 5-formylporphyrin(2) has been developed.Using pyrrole and pivaldehyde as the starting materi......
Serial measurements of plasma oxytcin concentration were done by radioimmunoassay in 38 cases of pregnancy induced
Se......
In order to increase the production of oil in low permeability reservoirs with high efficiency,it is necessary to fully ......
This paper described a practical five-step synthetic approach for 2-amino-5-methoxylpropiophenone in 45%overall yield,us......
Synthesis of a novel pyrrolo-benzoxaborole scaffold and its derivatization via Friedel-Crafts reacti
A novel pyrrolo-benzoxaborole,6-(pyrrol-1-yl)-1,3-dihydro-1-hydroxy-2,1-benzoxaborole,was synthesized with 27%overall yi......
YANGROU Hutong is 600 years old.Located in the Xisi area of Beijing’s Xicheng District,the area was originally a tradin......
Novel sulfur-containing compounds(3a–3c, 4a–4c) were obtained in ethanol with 1,3-diphenyl-2-propanone as the starting......
“THE FABRIC PILLED HORRIBLY I HAD TO EXCHANGE IT DON’T BUY THIS ONE IT SMELLS OF BODY ODOR I HAD TO RETURN IT I AM NOT......
Distereoselective one-pot synthesis of pyrimidopyrimidines using sulfated tin oxide as a reusable ca
The Biginelli-type compounds 4,5,8a-triarylhexahydropyrimido[4,5-d]pyrimidine-2,7(1H,3H)-diones were synthesized by a on......
Synthesis and Crystal Structure of a Zeolite-like Metal-organic Framework Based on the Triazole Liga
A novel zeolite-like metal-organic framework,[Cd12(trz)12·F10·(SiF6)3]·(H3O)4(Htrz=1,2,4-triazole),has been synthesiz......
An efficient synthesis of thiazines from the three component reactions between dialkyl acetylenedicarboxylates,arylisoth......
New 9-(alkyl or aryl)acenaphtho[l,2-b]furan-8-(alky or aryl)amine compounds has herein been reported by one-pot reaction......
Lanthanide-catalyzed cyclocarbonylation and cyclothiocarbonylation: a facile synthesis of benzannula
La[N(SiMe3)2]3 proves to be an efficient catalyst system for the cyclocarbonylation of 1,2-disubstituted benzenes with i......
The antibiotic (-)-anisomycin was synthesized starting from D-tyrosine using Sharpless asymmetric epoxidation as a key r......
We have developed simple,cost effective and environmentally benign protocol for the synthesis of 5-substituted 1H-tetraz......
An efficient and water tolerant method for the synthesis ofβ-haloamines is described utilizing hydrated nickel(Ⅱ) hali......
A facile approach for the first total synthesis of naturally occurring geranylated flavanoids sepicanin A has been obtai......
A practical six-step synthesis of 12 methylated and hydroxylated isoflavanones was accomplished starting from readily av......