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An Approximate Solution Technique Depending on an Artificial Parameter: A Special Example

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Communications in Nonlinear Science and Numerical Simulation 1998年第2期3卷 40-45页

作者： Jihuan HE (shanghai university, shanghai Institute of Applied Mathematics and Mechanics, shanghai 2.0072. china) shanghai university Shanghai Institute of Applied Mathematics and Mechanics Shanghai 200072 China

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关键词： perturbation methods homotopy Duffing equation nonlinearity

Origin of Chinese ancient glasses——study on the earliest Chinese ancient glasses

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Science china Technological Sciences 2006年第6期49卷 701-713页

作者： GAN Fuxi1,2. CHENG Huansheng1 & LI Qinghui2.1. Fudan university, 2.0 Handan Road, shanghai 2.0433,{2. 2. shanghai Institute of Optics and Fine Mechanics, CAS, P.O. Box 800-2.1, shanghai 2.1800,{2. Fudan university 220 Handan Road Shanghai 200433 China shanghai Institute of Optics Fine Mechanics CAS P.O. Box 800-211 Shanghai 201800 China

The earliest Chinese ancient glasses before the West Han Dynasty (2.0 BC) from different regions are studied. The glass samples were unearthed from Hunan, Hubei, Yunnan, Sichuan, Guizhou, Guangdong and Xinjiang of china. The chemical composition of these glasses samples is analyzed by proton induced X-ray emission (PIXE) technique, energy dispersive X-ray fluorescence (EDXRF) method and inductively coupled plasma atomic emission spectrometry (ICP-AES). It is shown that the glass chemical compositions belong to barium-lead silicate BaO-PbO-SiO2. potash soda lime silicate K2. (Na2.)-CaO-SiO2.(K2./Na2.>1), soda potash lime silicate Na2. (K2.)-CaO-SiO2.(K2./Na2.2.-SiO2.glass systems, respectively. The origins of the earliest Chinese ancient glasses are discussed from the archaeological and historical points of view. These four types of Chinese ancient glasses were all made in Chinese territory using local raw materials. The glass preparation technology was related to the Chinese ancient bronze metallurgy and protoporcelain glaze technology. The glass technology relationship between the East and the West is analyzed at the same time.

关键词： ancient glass glass origin chemical composition analysis.

Numerical Solution of Heat Tranfer Problemwith Flow and Solidification in Round BilletContinuous Casting of Steel

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Communications in Nonlinear Science and Numerical Simulation 1999年第3期4卷 236-239页

作者： Jiahong GUO(shanghai Institute of Applied Mathematics and Mechanics, shanghai {2.,shanghai 2.0072. china)Xin HONG(College of Material Science, shanghai {2., shanghai 2.0072. china) shanghai Institute of Applied Mathematics and Mechanics Shanghai University Shanghai 200072 China College of Material Science Shanghai University Shanghai 200072 China

IntroductionThetechnologyofc***g,***,itisimportallttostudythep... 详细信息

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关键词： heat transfer flow and solidification round billet continuous casting

EFFECT OF REINFORCEMENT VOLUME FRACTION ON PRECIPITATION IN MATRIX OF SiC_p/AI COMPOSITE

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Acta Metallurgica Sinica(English Letters) 1993年第8期6卷 161-167页

作者： LIN Junshan LI Pengxing WU Renjie shanghai Jiao Tong university,shanghai,china postdoctoral,Institute of Composite Materials,shanghai Jiaotong university,shanghai 2.0030,china shanghai Jiaotong Univ Shanghai China

The differential scanning calorimetric(DSC) and transmission electron microanalysis (TEM) techniques were used to study the kinetic process of precipitation in matrix of cast SiC_p/2.2. *** results showed that precipitation reactions of GP zone and intermediate phase S'(Al_2.uMg)in the composites were accelerated compared with SiC-free material,the peak temperatures of both reactions were *** reaction enthalpies of both the GP zone and intermediate phase S' formation in the matrix were substantially decreased after the addition of *** analysis found that the alloying element Mg segregated at the SiC/Al interfaces,and was depleted in the matrix near the *** precipitation-free zones(PFZ) and precipitation-sparse zones(PSZ) formed near the interfaces,as a results,the volume fraction of precipitates in matrix was reduced.

关键词： SiC_p/2.2. composite differential scanning calorimetry precipitation in matrix

Study on the dual-frequency oscillations in galactose-BZ system

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Chinese Journal of Chemistry 1997年第1期15卷 25-30页

作者： LI, He-XingDepartment of Chemistry, shanghai Normal university,shanghai 2.02.4, china Department of Chemistry Shanghai Normal University Shanghai 900234 China [*]Department of Chemistry Shanghai Normal University Shanghai 900234 China

Three types of dual-frequency oscillations in KBrO3-galactose-acetone-MnSO4-H2.O4 have been observed in a batch reactor depending on the initial concentration of H2.O4 or Br-. Similar phenomena were also observed when galactose was replaced by other aldosugars such as glucose, arabinose, lactose and maltose. However no dual-frequency oscillation has been found when ketosugar like fructose was used instead of galactose as the substrate. The roles of acidity, bromide ion and acetone in dual-frequency oscillations have been analyzed. The mechanism of dual-frequency oscillations has been discussed.

关键词： galactose dual-frequency oscillations acidity bromide

Construction of a genetic map and localization of QTLs for yield traits in tomato by SSR markers

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Progress in Natural Science:Materials International 2005年第9期15卷 793-797页

作者： LIU Yang 1,2., CHEN Huoying1**, WEI Yutang2.and ZHUANG Tianming1(1. Department of Plant Science, shanghai Jiaotong university, shanghai 2.1101, china 2. Department of Horticulture, Shenyang Agricultural university, Shenyang 110161, china) Department of Plant Science Shanghai Jiaotong University Shanghai 201101 China. Department of Horticulture Shenyang Agricultural University Shenyang 110161 China

Using an F2.opulation derived from the hybrid of Lycopersicon esculentum Mill. ‘XF 98-7’× Lycopersicon pimpinellifolium LA2.84, a SSR genetic linkage map of tomato is constructed. The map contains 112.markers and spans 808.4 cM with an average distance of 7.2. cM between loci. Two quantitative trait loci （QTLs） for first flower node on chromosomes 5 and 11, two QTLs for number of flowers per truss on chromosomes 2.and 5, and five QTLs for fruit weight on chromosomes 1, 2. 3, 9 and 12.are identified.

关键词： tomato SSR markers genetic mapping first flower node number of flowers per truss fruit weight.

The adsorption isotherms, IR and ^(2.)Si MAS NMR spectra of modified MCM-41 molecular sieves

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Chinese Science Bulletin 1997年第10期42卷 828-832页

作者： LONG Yingcai, DONG Weiyang, XU Taiming, GAO Xiaoqin, XIE Guangen and SUN Yaojun1. Department of Chemistry, Fudan university, shanghai 2.0433,{2. 2. Centre of Analysis and Measurement, Fudan university, shanghai 2.0433,{2. Department of Chemistry Fudan University Shanghai China Centre of Analysis and Measurement Fudan University Shanghai China

RECENTLY a new family of mesoporous molecular sieves,M41S,was reported by researchers atMobil R&D *** a member of the family,MCM-41,which exhibits a hexagonalarray of uniform channel mesopores,has been *** channel size can be variedfrom approximately 1.5 nm to greater than 10 nm by choosing different surfactants,auxiliarychemicals(1,3,5-trimethylbenzene)in the reactant,and by changing the reaction *** wall thickness of this kind of molecular sieve is in the range of 0.3 to 1.3 nm esti-

关键词： MCM-41 surface modification adsorption isotherm IR 2.Si MAS NMR.

Simultaneously inducing synthesis of semiconductor selenium multi-armed nanorods and nanobars through bio-membrane bi-templates

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Science china Chemistry 2004年第6期47卷 507-511页

作者： LI Li1, WU Qingsheng1 DING Yaping2.& LI Ping3 1. Department of Chemistry, Tongji university, shanghai 2.0092.{2. 2. Department of Chemistry, shanghai university, shanghai 2.0436,{2. 3. Department of Food, Anhui Agricultural university, Hefei 2.0036,{2. 1. Department of Chemistry Tongji University 200092 Shanghai China 2. Department of Chemistry Shanghai University 200436 Shanghai China 3. Department of Food Anhui Agricultural University 230036 Hefei China

Multi-armed nanorods and nanobars of semiconductor selenium were simultane- ously synthesized in the light of biomineralization process through bio-membrane bi-templates of rush at room temperature. The multi-armed nanorods are 60 nm in diameter and 1.5 μm in length; the nanobars are 150 nm in diameter and 1000—1100 nm in length. The XRD pattern indicates that these nanocrystals were crystallized in the hexagonal structure with lattice constants a = 0.437 nm, c = 0.495 nm. The possible formation mechanism was investigated.

关键词： selenium, multi-armed nanorods, nanobars, bio-membrane, bi-templates.

A NONLINEAR GALERKIN METHOD WITH VARIABLEMODES FOR KURAMOTO-SIVASHINSKY EQUATION

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Journal of Computational Mathematics 1999年第3期17卷 243-256页

作者： Yu-jiang wu(Depadrtment of Mathematics, shanghai university, Jiadiap{2., china Department of Mathematics, Lanzhou university, Lanzhou 750000, china) 上海大学数学系上海

This article proposes a kind of nonlinear Galerkin methods with variable modes for the long-term integration of Kuramoto-Sivashinsky equation. It consists of finding an appropriate or best number of modes in the correction of the method. Convergence results and error estimates are derived for this method. Numerical examples show also the efficiency and advantage of our method over the usual nonlinear Galerkin method and the classical Galerkin method.

关键词： Kuramoto-Sivaskinsky equation nonlinear Galerkin method approximation convergence