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Lattice-Boltzmann Models for Heat Transfer

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Communications in Nonlinear Science and Numerical Simulation 1997年第4期2卷 212-216页

作者： Chenghai SUN,Zujun XU,Baoguo WANG &Mengyu SHEN (Dept. of Engineering Mechanics,Tsing- hua University,Beijing,1 0 0 0 84) Department of Engineering Mechanics Tsinghua University Beijing 100084 China

A multispeed heat transfer lattice Boltzmann model is presented. The model possesses the perfect gas state equation with arbitrary special heat ratio. The macroscopic conservation equations are derived by the Chapman- Enskog *** one dimensional simulation for the sinusoidal energy distributions are compared with the theoretical results, showing good *** theoretical conductivity in the energy equation is in accordance with the simulations.

关键词： Lattice Boltzmann heat transfer perfect gas

Synthesis of dimethyl 3-perfluoroalkyl-4-(3-oxo-2-triphenyl-phosphoranylidenbutanylidene)-pent-2-enedioate and its cyclization

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Chinese Journal of Chemistry 1995年第5期13卷 468-474页

作者： Ding, WY Cao, WG Yao, Y Zhu, zm SHANGHAI UNIV SCI & TECHNOL DEPT CHEMSHANGHAI 201800PEOPLES R CHINA

The title compounds 5a-5c were prepared via the reaction of methyl 2-perfluoroalkynoates (4) with methyl 5-oxo-4-(triphenylphosphoranylidene)hex-2-enoate (3), which was obtained from the reaction of methyl propynate (2) with acetylmethylenetriphenylphosphorane (1) at -5-0 degrees C. Intramolecular elimination of Ph(3)PO took place when compound 5 was heated in aqueous methanol at 115-120 degrees C in sealed tube, yielding dimethyl 2-trifluoromethyl-4-methylisophthalate (6a) from 5a and methyl 5-acetyl-4-hydroxy-2-heptafluoropropanylbenzoate (6b) from 5b, respectively. The structures of compounds 5, 6a and 6b were confirmed by IR, MS, H-1 NMR, F-19 NMR and C-13 NMR spectroscopy and elemental analyses. Rection mechanisms for the formation of compounds 5, 6a and 6b were proposed.

关键词： phosphorane polysubstituted arene intramolecular cyclization

SOFTWARE-CONTROLLED SYSTEM OF ULTRA-PRECISION MACHINING AXISYMMETRIC ASPHERIC MIRROR

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Chinese Journal of Mechanical Engineering 2006年第2期19卷 256-259页

作者： GU0 Yinbiao　 WEI Lizhen Department of Mechanical and Electrical Engineering Xiamen UniversityXiamen 361005 China

In order to improve machining accuracy and efficiency, a software-controlled system of ultra-precision machining for axisymmetric aspheric mirror, using techniques of error compensation, remote transmission and modularization, is designed based on industrial PC, Windows 2000 work platform and Visual Basic 6.0. By experiments, this system realizes functions of ultra-precision machining, machining error compensation, remote data transmission and automatic data transformation among first machining, compensation machining and accuracy measurement. The actual application shows that error compensation improves machining accuracy, remote transmission improves machining efficiency while modularization avoids repeated work and improves design efficiency. Therefore, the system has met ultra-precision machining need for aspheric mirror.

关键词： Aspheric surface machining Error compensation Remote transmission Visual Basic

Classification of hypersurfaces with two distinct principal curvatures and closed Mbius form in S^(m+1)

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Science China Mathematics 2012年第7期55卷 1463-1478页

作者： LINLiMiao GU0Zhen DepartmentofMathematics EastChinaNormalUniversityShanghai200241China DepartmentofMathematics YunnanNormalUniversityKunming650092China

Let x be an m-dimensional umbilic-free hypersurface in an (m + 1)-dimensional unit sphere Sm+1 (m≥3). In this paper, we classify and explicitly express the hypersurfaces with two distinct principal curvatures and clo... 详细信息

关键词：封闭形式超曲面主曲率分类 SM 单位球面共形平坦 PAL

Role of Baicalein in the regulation of proliferation and apoptosis in human myeloma RPMI8226 cells

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Chinese Medical Journal 2006年第11期119卷 948-952页

作者： LI Qiu-bai Y0U Yong CHEN Zhi-chao Lü Jian SHA0 Jing Z0U Ping Institute of Hematology Union Hospital Tongji Medical CollegeHuazhong University of Science and Technology Wuhan 430022China

Multiple myeloma （MM） is a uniformly fatal disease characterized by a clonal proliferation of neoplastic plasma cells in the bone marrow and is the second most commol hematological malignancy.1 At present, a cure for multiple myeloma has not been achieved with chemotherapeutic regimen, and many patients die of drug-resistant disease. Thus, the development of new effective anticancer agents to treat both early and advanced MM seems to be an attractive perspective.

关键词： Baicalein 12-lipoxygenase proliferation apoptosis

THE REVISED STRUCTURE OF GNETIFOLIN A

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Chinese Chemical Letters 1995年第8期6卷 683-686页

作者： Wang, zm Liang, XT Chen, SF Chinese Acad Med Sci Inst Mat Med Beijing 100050 Peoples R China Beijing Union Med Coll Beijing 100050 Peoples R China Chinese Acad Tradit Chinese Med Inst Chinese Mat Med Beijing 100700 Peoples R China

The structure of gnetifolin A, previously proposed as (1), was revised to (2) on the basis of the original spectra of gnetifolin A and the spectral data of its synthetic analogs.

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Effect of Boron on Carbide Morphology of High CrLedeburite Steel

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Journal of Materials Science & Technology 1999年第3期15卷 286-288页

作者： Wang, SQ Jiang, QC Cui, XH He, zm Jilin Univ Technol Sch Mat Sci & Engn Changchun 130025 Peoples R China

The effect of boron-on carbide morphology of high Cr ledeburite steel has been studied. The results showed that B had obvious influence on eutectic carbide morphology in solidification structure and carbide granulation at high temperature. The addition of 0.02 similar to 0.05 wt pet B changed carbide morphology in solidification structure from strip eutectic and rosette eutectic into divorced eutectic. B accelerated carbide granulation through increasing unstability and lattice distortion of carbide and element diffusion, Granular carbide could be achieved when heated at 1150 degrees C for 1.5 h.

关键词： Effect of Boron on Carbide Morphology of High CrLedeburite Steel

Syntax of first-order lattice valued logic system FM

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Chinese Science Bulletin 1997年第16期42卷 1337-1340页

作者： Xu, Y Qin, KY Song, zm Sw Jiaotong Univ Dept Appl Math Chengdu 610031 Peoples R China

PAVELKA in ref. [1] established a propositional logic system whose truth values domain is an enriched residuated lattice and obtained some beautiful results. In order to study more general lattice valued logic systems, we proposed the concept of lattice implication algebra, discussed the corresponding lattice valued propositional logic system, and established a

关键词： lattice implication algebra lattice valued logic formal proof.

ATP as anindicator of biomass activity in thermophilic upflow anaerobic sludge blanket reactor

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Journal of Environmental Sciences 2000年第3期12卷 380-384页

作者： CHEN Hong (Department of Environmental Science and Engineering ,Zhejiang University ,Hangzhou 31 0 0 2 7,China) 浙江大学浙江杭州 3 1 0 0 2

Thisworkinvestigatedthebiomassactivityinathermophilicupflowanaerobicsludgeblanket (UASB )reactorof wastewatertreatment .SynthetictextilewastewaterwithpH 1 0— 1 1 ,CODlevelof2 0 0 0— 30 0 0mg/Lwastested .Cellularadenosine triphosphate (ATP)involatilesolids (VS ;mgATP/gVS)wasmeasuredandexpressedasspecificATPcontenttocomparethe biomassactivityinupzoneandlowerzoneinUASBreactor .TheresultshowsthatthespecificATPcontentbasedontotalvolatile solids (VS)inlowerzone ( 0 .0 4 6mgATP/gVSaverage)ismuchlowerthanthatinupzone ( 0 .62mgATP/gVSaverage)duetohighcontentofinactivebiomassandhighpHinlowerzone .TheSATPinupzoneincreasesasHRTincreasesandapproachestoa maximumvalueof 0 .85mgATP/gVSatHRTof 7h ,thendecreases .ItshowsmostofthetotalVSinupzonerepresentactive bacterialbiomassatHRTof 7h .Rateofsubtractutiliz*** effectofHRTonSATPinlowerzoneisnotassignificantasonSATPinupzone .ThebuffercapacityofthethermophilicUASB reactorisverygood .ItistheactivityofsludgegranulesinlowerzonethatgivetheUASBreactorsuchagoodbuffercapacitytotheinlethighpH .

关键词： ATP biomassactivity UASBreactor