检索结果-南通市图书馆

A G^E/Equation of State Mixing Rule for Vapor-Liquid Equilibria

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemical Engineering 1998年第3期6卷 14-28页

作者：屈一新汪文川 Lee y.y. Chung K.y. Lee y.w. Korea Institute of Science and Technology SeoulKorea

A new excess Gibbs free energy/equation of state type mixing 0rule was derived byremoving the infinite pressure boundary condition imposed by.w.ng and *** mixing rulewas extensively tested in terms of a comprehensive data base,consisting of 52 simple nonpolar-nonpolar,carbon dioxide containing,hydrocarbon-hydrocarbon,CFC,polar-polar,nonpolar-polarbinary and multicomponent *** on the complete predictive capability,a comparisonbetween the wong-Sandler and the mixing rule proposed was *** results indicate that thenew mixing rule is in general superior to the wong-Sandler’s,and the binary interaction parameteras required by the latter is removed,which reduces computing effort and is reliable in predictions ofvapor-liquid equilibria from low pressures to high pressures.

关键词： vapor-liquid equilibria equation of state mixing rule

LASER HEAT TREATING RESEARCH OF THREE KINDS OF HIGH SPEED STEEL

在线全文

学校读者我要写书评

暂无评论

Acta Metallurgica Sinica(English Letters) 1999年第5期12卷 757-760页

作者： Liu, w.N. Fang, M.N. Xing, J. Liu, y.w. Changchun Inst of Optics and Fine Mechanics Changchun China

After laser quenching and tempering of three kinds of annealed tool high-speed steel(w18Cr-4V, w9Mo3Cr4V1, w6Mo5Cr4V2) test samples, the microhardness measurer was used to test the samples and some problems, such as the hardness and depth of hardening-quenching layer were analyzed. Furthermore, after laser quenching and tempering of the quenched and three-time tempered high-speed steel (w18Cr4V) and its hardness analyzing, different results of laser-quenching samples were obtained under different initial heat-treating.

关键词： Hardening Heat treatment Laser beam effects Microhardness Phase transitions Quenching

SyNTHESIZING KINETICS AND MICRO-CHARACTERIZATION OF SPINEL LiMn_(2)O_(4) FOR LITHIUM-ION BATTERy CATHODE MATERIAL

在线全文

学校读者我要写书评

暂无评论

Acta Metallurgica Sinica(English Letters) 2001年第5期14卷 323-329页

作者： CATHODE MATERIAL M.S. Zhao, y.C. Zhai and y.w. Tian School of Material & Metallurgy, Northeastern University, Shenyang 110004, China School of Material & Metallurgy Northeastern University

The reaction process during synthesis of LiMn2O4 with LiOH·H2O and MnO2 was studied by means of DTA in dynamical air atmosphere, and it could be applied as an important theoretical principle for preparing LiMn2O4. The active energies of four reaction processes were obtained with Doyle-Ozawa method and Kissinger method as follows: 66.299, 72.640, 128.11 and 113.876 kJ·mol-1, respectively. Reaction orders, frequency factors and kinetic equations of each reaction were determined by Kissinger method. XRD, SEM and TEM show that the synthesized LiMn2O4 is a pure phase, with regular appearance and higher ratio-surface.

关键词： Cathodes Inorganic compounds Kinetic theory Synthesis (chemical)

Image Content-based watermarking Resistant against Geometrical Distortions

在线全文

学校读者我要写书评

暂无评论

Image Content-based Watermarking Resistant against Geometric...

STUDy ON PROPERTy PREDICTION FOR SEALING ALLOyS

2006 8th International Conference on Signal Processing

作者： yuan,w.G. Ling H.F. Lu z.d. Zou F.H. yu y.w. School of Computer Science Huazhong University of Science＆Technology

ISBN: (纸本)0780397371

＜正＞A geometrically robust watermarking scheme was proposed based on image local content,which could resist both image cropping and RST *** first extracts the robust feature points,and then partitions the image into multi circular *** area is transformed into PM sub-images,then 2-D DFT is performed and the magnitudes are used as the watermark-embedding *** the watermark is embedded by modifying the DFT magnitudes using energy *** with Fourier-Mellin transform-based watermarking,its computational cost is reduced as only one 2-D DFT is performed. Moreover,the method can overcome the interpolation problem by using PM in the spatial domain because images have a similar scale between neighboring pixels.

关键词： Digital watermarking

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Acta Metallurgica Sinica(English Letters) 1996年第4期9卷 307-309页

作者： Z.N. Xia S.G. Lai y.Z.Sun and y.w. Lu(Department of Materials Science and Engineering,Tsinghua University, Beijing 100084, China

This paper describes a model of property prediction for alloys using the mapping function and self-learning ability of artificial neural network. By learning from experimental data, the neural network induces the relationship between composition, processing and properties of alloys, and predicts the properties with given composition and processing parameters of new *** verification of sealing alloys demonstrates that the artificial neural network is an effective method for materials design and properties prediction.

关键词： property prediction artificial neural network sealing alloy

在线全文

学校读者我要写书评

暂无评论

怀孕养育300问 1

SIMULATIONS OF MIGRATION AND EMISSIONS OF GASES IN SAND-COVER OF LANDFILL

1989年

作者：（新加坡）y.w.塞尔门唐新林

本书以问答形式介绍了怀孕、分娩、婴儿喂养、计划生育等各阶段的科学、医学和卫生保健知识。

ISBN: (纸本)7539002638

本书以问答形式介绍了怀孕、分娩、婴儿喂养、计划生育等各阶段的科学、医学和卫生保健知识。

关键词：围产期保健

来源：汇雅图书（南通市图书馆... 评论

在线全文

汇雅图书（南通市图书馆）

学校读者我要写书评

暂无评论

SIMULATIONS OF MIGRATION AND EMISSIONS OF GASES IN SAND-COVE...

PROTEOMIC ANALySIS OF THE RAT ROSTRAL VENTROLATERAL MEDULLA, A NEURAL DETERMINANT FOR BRAIN DEATH

第三届国际甲烷与氧化亚氮减排技术大会

作者： Tan K.K Tan y.w. Department of Chemical and Environmental Engineering Faculty of EngineeringUniversiti Putra Malaysia

The migrations and emissions of landfill gases in porous sand cover can be estimated with empirical correlations and simulated with a computing fluid dynamics（CFD）*** sand-covers of 0.3 m and 0.6 m are treated as porous *** CFD simulations are particularly useful in capturing the mechanism of migration and emissions of gases under steady and unsteady-state *** is found that the mass transfer may be driven by simultaneous diffusion and buoyancy *** rate of mass transfer is significantly enhanced compared to that of diffusion,generally it is about three times that of pure *** prediction of mass transfer rate by diffusion of gas in stationary fluid in porous media is found to be lower than the prediction from CFD *** CFD simulations can also be designed to predict the level of emissions which must meet regularly standard of health and safety.

关键词： emissions of gases convection porous media CFD simulations.

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

PROTEOMIC ANALYSIS OF THE RAT ROSTRAL VENTROLATERAL MEDULLA,...

第十五届国际药理学大会

作者： Chou Li-Jer wu Hsin-yi Chang Alice y.w. Chan Samuel H.H. Institute of Biomedical Sciences National Sun Yat-sen University Kaohsiung China Center for Neuroscience National Sun Yat-sen University Kaohsiung China Center for Neuroscience National Sun Yat-sen University Kaohsiung China Center for Neuroscience National Sun Yat-sen University Kaohsiung China

＜正＞ Our laboratory revealed previously that the rostral ventrolateral medulla （RVLM） is intimately related to the "life and-death" process. This study sets the stage for screening for the multiple pro-life and pro-death programs that may be engaged by the RVLM during the progression towards death. Tissues collected from the ventrolateral medulla of Sprague-Dawley rats under minimal experimental perturbations were subject to two-dimensional electrophoresis and MALDI-TOF mass spectrometry-peptide map fingerprint analysis. The two-dimensional electrophoret-ic gel （pI: 3-10;Mr: ＜ 94 kDa）. on silver staining or colloidal Coomassie Brilliant Blue staining, showed approximately 530 or 230 protein spots. Of 200 spots selected for in-gel digestion followed by database search using measured peptide masses resulted in the identification of 148 proteins in 188 spots. These include structural proteins, or proteins related to transcription and translation, intermediary metabolism, chaperones. signal transduction. apoptosis. protein turnover, and oxidative stress. This information shall form the foundation in our search for the pro-life and pro-death proteins at the RVLM that may participate in brain death.

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

奔跑的快乐

课外语文 2005年第Z1期 36-39页

作者： y.w.麦迪美