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| 1 | Numerical Simulation on Climate Effects of Freezing-Thawing Processes Using CCM3显示文摘A parameterization of soil freezing-thawing physics for use in the land-surface model of the National Center for Atmospheric Research(NCAR) Community Climate Model(CCM3) is developed and evaluated.The new parameterization scheme has improved the representation of physical processes in the existing land surface model.Numerical simulations using CCM3 with improved land-surface processes and with the original land-surface processes are compared against the NCEP reanalysis.It is found that the CCM3 version using the improved land surface model shows significant improvements in simulating precipitation in China during the summer season,the general circulation over East Asia,and wind fields over the Tibet Plateau.For the summer season,the improved model was able to better simulate the Indian summer monsoon components,including the mean northerly wind in the upper troposphere and mean southerly wind in the lower troposphere. | Chenghai Wang1,2*,Guodong Cheng3,Aijun Deng4,Wenjie Dong5 1.State Key Laboratory of Frozen Soil Engineering,Cold and Arid Regions Environmental and Engineering Research In-stitute,Chinese Academy of Sciences,Lanzhou Gansu 730000,China 2.State Key Laboratory of Cryosphere Sciences,Cold and Arid Regions Environmental and Engineering Research Insti-tute,Chinese Academy of Sciences,Lanzhou Gansu 730000,China 3.State Key Laboratory of Frozen Soil Engineering,Cold and Arid Regions Environmental and Engineering Research In-stitute,Chinese Academy of Sciences,Lanzhou Gansu 730000,China 4.Department of Meteorology,The Pennsylvania State University,University Park,PA 16802 5.State Key Laboratory of Earth Surface Processes and Ecology Resource,Beijing Normal University,Beijing 100875,China Chenghai Wang1,2*,Guodong Cheng3,Aijun Deng4,Wenjie Dong5 1.State Key Laboratory of Frozen Soil Engineering,Cold and Arid Regions Environmental and Engineering Research In-stitute,Chinese Academy of Sciences,Lanzhou Gansu 730000,China 2.State Key Laboratory of Cryosphere Sciences,Cold and Arid Regions Environmental and Engineering Research Insti-tute,Chinese Academy of Sciences,Lanzhou Gansu 730000,China 3.State Key Laboratory of Frozen Soil Engineering,Cold and Arid Regions Environmental and Engineering Research In-stitute,Chinese Academy of Sciences,Lanzhou Gansu 730000,China 4.Department of Meteorology,The Pennsylvania State University,University Park,PA 16802 5.State Key Laboratory of Earth Surface Processes and Ecology Resource,Beijing Normal University,Beijing 100875,China | 2008 | Research in Cold and Arid Regions2008，，1： | 44 |
| 2 | A Study on Solid/Melt Interfaces and the Formation of<100> Texture in Solidified FCC Metals显示文摘The (100) texture of solidified fcc metals, caused by the preferential (100) dendrite growth, could be closeIy related to solid/melt interfaces which behave differently along different crystallographic orientation. The stability and roughness of {111} and {100} solid/melt interfaces of fcc metals were investigated using a modified Temkin multi-layer model. It is demonstrated that {100}crystal/melt interface is more unstable and rougher than {111} interface. The effect of the stability of crystal/melt interface on the (100) texture formation in solidified fcc metals has been analysed and discussed. | D.Y.Li(Dept. of Mater. Sci & Eng., The Pennsylvania State University, University Park, PA 16802, USA )B.Debray and J.A.Szpunar(Dept. of Metall. Eng., McGill University, 3450 Uuiversity Street, Molitreal, PQ, Canada H3A 2A7) | 1997 | Journal of Materials Science & Technology1997，13，6： | 20 |
| 3 | CATALYTIC RESEARCH FOR CLEAN ENERGY AND ULTRA-CLEAN FUELS IN THE 21^(st) CENTURY Future Perspectives显示文摘本文系由大连理工大学王祥生教授 (本刊编委 )和郭新闻教授约请美国宾州大学宋春山博士撰写的“2 1世纪清洁能源和超清洁燃料催化研究的未来展望”述评。在本文中笔者系统而扼要地回顾了 2 0世纪全球能源消耗及供求的情况 ,展望了 2 1世纪催化研究面临的机遇 ,着重讨论了清洁能源 ,对催化而言应把综合和有效利用能源作为研究方向。笔者结合美国情况介绍了许多有用的统计数字 ,重点结合自己的研究工作比较全面地阐述了能源燃料工业对催化研究的需求及其机遇。它包括了清洁运输燃料、重油轻质化增产中间馏分油、制氢和燃料电池、天然气利用、天然气液化、替代燃料的发展、煤的综合利用、专用化学品的合成以及CO2 的转化和利用等。煤既作为生产清洁燃料的原料 ,又作为生产专用化学品的资源 ,把在炼油化工中已经取得卓越成果的催化技术、分子筛催化过程转移到煤化工领域 ,笔者对此提出了比较完整的方案。这些对于读者都有很大的帮助。 | Chun-shan SONG (Clean Fuels and Catalysis Program, The Energy Institute, and Department of Energy & Geo-Environmnetal Engineering, Pennsylvania State University, 209 Academic Projects Building, University Park, PA 16802, USA) | 2002 | 石油学报(石油加工)2002，18，6： | 4 |
| 4 | Ab initio molecular dynamics simulation of the atom packing and density of Al-Ni amorphous alloys显示文摘Al-Ni alloys have better glass forming ability (GFA) than other Al-based alloys. However, the relationship among the atomic arrangement, glass transition, packing density and composition hasn’t been systematically studied. In this paper the ab initio molecular dynamics simulation (AIMD) was performed on the atom packing and density of AlxNi100-x (x=80, 83, 85, 86, 87 and 90) alloys. The pair correlation function and Voronoi tessellation indicated that there are obvious topological and chemical short-range orders in these alloys. The topological structure consists of Al-centered icosahedra like and Ni-centered tri-capped trigonal prism (TTP) like polyhedra. There is strong chemical short-range ordering between Al and Ni atoms indicated by the bond-length of Al-Ni pair shorter than the sum of the radii of Al and Ni atoms, which increases with the increasing of Ni content. It is shown that the densities of amorphous alloys don’t agree with the linear law with a peak at x=85. Based on the features of the structure and density, it is concluded that Al-Ni alloys at x=84–86 have high GFA, which can be extended to multi-component Al-based alloys. | YU ChunYan1, HUI XiDong1, CHEN XiaoHua1, LIU XingJun1, LIN DeYe1, LIU ZiKui2 & CHEN GuoLiang1 1 State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China 2 Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA 16802, USA | 2010 | Science China(Technological Sciences)2010，53，12： | 3 |
| 5 | Linear low-rank approximation and nonlinear dimensionality reduction显示文摘 | ZHANG Zhenyue & ZHA Hongyuan Department of Mathematics, Zhejiang University, Yuquan Campus, Hangzhou 310027, China Department of Computer Science and Engineering, The Pennsylvania State University, University Park, PA 16802, U.S.A. | 2004 | Science China Mathematics2004，47，6： | 2 |
| 6 | EXISTENCE OF THE MINIMAL POSITIVE SOLUTION OF SOME NONLINEAR ELLIPTIC SYSTEMS WHEN THE NONLINEARITY IS THE SUM OF A SUBLINEAR AND A SUPERLINEAR TERM显示文摘It is shown that there exists Λ>0 such that, for every λ∈(0,Λ), the semilinear elliptic system: - Δ u=λu|u| q-1 +u|u| p-1 -v inΩ, - Δ v=δu-γv in Ω, u=v=0 on Ω, where Ω∈R N(N≥2) is a bounded domain with smooth boundary and 0 | Nicolae Tarfulea (Department of Mathematics, the Pennsylvania State University, University Park, PA 16802, U S A) | 2000 | Applied Mathematics and Mechanics(English Edition)2000，21，3： | 2 |
| 7 | New synthesis of amphiphilic copolymers PE-g-PEO via esterfication显示文摘A new series of high molecular weight amphi-philic graft copolymers PE-g-PEO has been prepared. The esterifications between PE-p-MS-g-MA and PEO with OH group at the chain end are carried out under different condi-tions. The compositions of these graft copolymers are studied by NMR and FTIR. It is found to be a convenient and effi-cient way to prepare high molecular weight PE-g-PEO graft copolymers. | L?Yingying1, MA Zhi1,2, HU Youliang1, XU G. X.3 & CHUNG T. C.3 1. State Key Laboratory of Engineering Plastics, Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Bei-jing Beijing Lab of Catalysis, Key Lab of Catalysis of China Na-tional Petroleum Corporation, Beijing 100080, China 2. Graduate School of Chinese Academy of Sciences, Beijing 100039, China 3. Department of Material Science and Engineering, Pennsylvania State University, University Park, PA 16802, USA | 2003 | Chinese Science Bulletin2003，48，6： | 2 |
| 8 | Mechanical load inhibits IL-I induced matrix degradation in articular cartilage 显示文摘 | Torzilli PA Bhargava M Park S | 2010 | Osteoarthritis Cartilage2010，18，1： | 1 |
| 9 | A pilot exploratory study of oral electrical stimulation on swallow function following stroke:an innovative technique显示文摘 | O'Neill PA Martin DF | 1997 | Dysphagia1997，12，： | 1 |
| 10 | Preservation of As (III) and As(V) in drinking water supply samples from across the United States using EDTA and acetic acid as a means of minimizing iron - arsenic coprecipitation 显示文摘 | Gallagher PA Schwegel CA Parks A | 2004 | Environ Sci Technol2004，38，10： | 1 |
| 11 | Effect of exenatide on gastric emptying and relationship to postprandial glyeemia in type 2 diabetes 显示文摘 | Linnebjerg H Park S Kothare PA | 2008 | Regul Pept2008，151，13： | 1 |
| 12 | Neurotoxic Abeta peptides increaseoxidative stress in vivo through NMDA-receptor and nitric-oxide-synthase mechanisms, andinhibit complex IV activity and induce a mitochondrial permeability transition in vitro显示文摘 | Parks JK Smith TS Trimmer PA | 2001 | J Neurochem2001，76，4： | 1 |
| 13 | Desmoplastic reaction in pancreatic cancer:role of pancreatic stellate cells显示文摘 | Apte MV Park S Phillips PA | 2004 | Pancreas2004，29，3： | 1 |
| 14 | Potential occupational risks for neurodegenerative diseases 显示文摘 | Park RM Sehulte PA Bowman JD | 2005 | Am J Ind Med2005，48，1： | 1 |
| 15 | Synergistic role of granzyme A and B in mediating target cell death by RBL mast cell tumors also expressing cytolysin/perforin显示文摘 | Nakajinma H Park H Henkart PA | 1995 | J Exp Med1995，181，： | 1 |
| 16 | Desmoplastic reaction in pancreatic cancer: role of pancreatic stellate cells 显示文摘 | Apte MV Park S Phillips PA | 2004 | Pancreas2004，29，3： | 1 |
| 17 | Usefulness of B type natriuretic peptide as a predictor of treatment outcome in pulmonary arterial hypertension显示文摘 | Park MH Scott RL Uber PA | 2004 | Congest Heart Fail2004，10，： | 1 |
| 18 | Role of ischemic gradient in neovascularization of interpolated skin flaps显示文摘 | Park SS Rodehaver GT Levine PA | 1996 | Arch Otolsryngol Head Surg1996，122，8： | 1 |
| 19 | Obesity and suppressed B-type natriuretic peptide levels in heart failure显示文摘 | Mehra MR Uber PA Park MH | 2004 | J Am Coll Cardiol2004，43，9： | 1 |
| 20 | Complications after acute stroke :Does dysphagia matter? 显示文摘 | Smithard DG O'Neill PA Park C | 1996 | Stroke1996，27，： | 1 |
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