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| 1 | Ecosystem size deter- mines food-chain length in lakes 显示文摘 | Post DM Pace ML I-Iairston NG 5000 | | Nature0，405，： | 1 |
| 2 | Calculation of the Hardness Space Distribution in the As Quenched Condition of a Medium Hardening Tool Steel显示文摘The calculation of the hardness profile is a powerful tool for the selection of the right steel for a given purpose. Computer programs INC-PHATRAN and INDUCTER-B were formerly developed by the authors for the calculation of hardness profiles after heat treatment processes of low alloy and carbon steels. The first one simulates quenching as well as through hardening operations, and the second one models electromagnetic induction heat treatments processes. These codes make use of the SAE Standard 3406 in order to obtain the hardness profile, with enhanced regression coefficients recently obtained by the authors. The present work broadens the field of application of this method, allowing to apply it for low hardenability tool steels such as the ASTM O1 Tool Steel. The method used for the calculation of the hardness profile is here summarized, and an example of application is described, which shows good correspondence between the calculated and measured values. | G.Sanchez Sarmiento and J. Vega 1.Departamento de Fisica, Facultad de Ingenieria, Universidad de Buenos Aires, Av. Paseo Colon 850. (1063) Buenos Aires, Argentina 2 . Universidad Catolica de Cordoba and SUDOSJLO SA, Cno. San Carlos Kin 4,5. (5000) Cord | 2000 | Journal of Shanghai Jiaotong university(Science)2000，5，1： | 0 |
| 3 | CONSERVATIVE FRONT TRACKING IN HIGHER SPACE DIMENSIONS显示文摘September 12,2001 we propose a fully conservative front tracking algorithm in two space dimension. This algorithm first uses the point shifted algorithm on two adjacent time levels and then constructs space time hexahedra as computational units. We develop and prove a successful geometric construction under certain interface requirement. The algorithm has a first order local truncation error for cells near the tracked discontinuity, which is an improvement by one order of accuracy over most finite difference schemes, which have O (1) local truncation errors near discontinuities. | James Glimm Department of Applied Mathematics and Statistics,University at Stony Brook, Stony Brook, USA NY 11794 3600 Center for Data Intensive Computing,Brookhaven National Laboratory, Upton, USA NY 11793 5000 Li Xiaolin Liu Yingjie (Department | 2001 | Transactions of Nanjing University of Aeronautics and Astronautics2001，18，z1： | 0 |
| 4 | RECENT PROGRESS IN INCOMPRESSIBLE REYNOLDSAVERAGED NAVIER-STOKES SOLVERS显示文摘RECENTPROGRESSININCOMPRESSIBLEREYNOLDSAVERAGEDNAVIER-STOKESSOLVERS￥C.H.Sung;T.T.Huang(DavidTaylorModelBasin,CD/NSWCBethesda,M... | C. H. Sung T. T. Huang(David Taylor Model Basin,CD/NSWC Bethesda, MD 20084- 5000,USA) | 1996 | Journal of Hydrodynamics1996，8，1： | 0 |
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