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    题名 作者 年代 出处 被引量
1A one-dimensional heat transfer model of the Antarctic Ice Sheet and modeling of snow temperatures at Dome A, the summit of Antarctic Plateau显示文摘A vertical one-dimensional numerical model for heat transferring within the near-surface snow layer of the Antarctic Ice Sheet was developed based on simplified parameterizations of associated physical processes for the atmosphere, radiation, and snow/ice systems. Using the meteorological data of an automatic weather station (AWS) at Dome A (80°22′S, 70°22′E), we applied the model to simulate the seasonal temperature variation within a depth of 20 m. Comparison of modeled results with observed snow temperatures at 4 measurement depths (0.1, 1, 3, 10 m) shows good agreement and consistent seasonal variations. The model results reveal the vertical temperature structure within the near-surface snow layer and its seasonal variance with more details than those by limited measurements. Analyses on the model outputs of the surface energy fluxes show that: 1) the surface energy balance at Dome A is characterized by the compensation between negative net radiation and the positive sensible fluxes, and 2) the sensible heat is on average transported from the atmosphere to the snow, and has an evident increase in spring. The results are considered well representative for the highest interior Antarctic Plateau.CHEN BaiLian1,3, ZHANG RenHe2, SUN ShuFen1, BIAN LinGen2, XIAO CunDe4,2 & ZHANG TingJun5 1 Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China 2 Chinese Academy of Meteorological Sciences, Beijing 100081, China 3 Graduate University of Chinese Academy of Sciences, Beijing 100049, China 4 Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China 5 The National Snow and Ice Data Center, University of Colorado, Boulder, CO 80309-0449, USA 2010Science China Earth Sciences2010,53,5:7
2An Internal State Variable Model for the Low Temperature Tempering of Low Alloy Steels显示文摘An internal state variable (ISV) framework is used to predict the rate and degree of strain relaxation associated with the stage I, low temperature tempering of martensite. A single variable tracks the change in volume between the tempered an untempered structures. The rate at which this occurs is taken to be a function of martensite fraction, temperature, degree of tempering, and carbon concentration. Experimental dilatometty data is used to both fit and validate the model.Mark T. Lusk, Young-Kook Lee, Herng-Jeng Jou, William H. Elliott, Gerard M Ludtka 1.Materials Science Program, Division of Engineering, Colorado School of Mines, Golden, CO. U.S. 80401 2.Questek Innovations LCC, 1801 Maple Avenue, Evanston, IL, U.S. 602 2000Journal of Shanghai Jiaotong university(Science)2000,5,1:5
3OPTIMUM CHANNEL GEOMETRY AND MINIMUM ENERGY DISSIPATION RATE显示文摘The theory of minimum rate of energy dissipation in conjunction with Yang’s sediment transport equation and Manning’s equation for water discharge is used to derive the optimum open channel geometry. The optimum channel geometry thus derived is consistent with those based on the tractive force approach and is identical to those hosed on the least wetted perimeter for a given cross-sectional area with the maximum conveyance. laboratory and field data are used to support the theoretical analyses.Chih Ted Yang and Charles C. S. Song International and Special Projects Coordinator, U. S. Bureau of Reclamation, Denyer, Colorado 80225, U. S. A. Professor, St. Anthony Falls Hydraulic Laboratory, University of Minnesota, MinneaPOlis, Minnesota 55414, U. S. A. 1990International Journal of Sediment Research1990,5,1:5
4APPLICABILITY OF SEDIMENT TRANSPORT FORMULAS显示文摘The paper provides a comprehensive testing of the applicability of 13 sediment transport formulas under different flow and sediment conditions. The dimensionless parameters used for testing the reliability and sensitivity of formulas are dimensionless particle diameter, relative depth, Froude number, relative shear velocity, dimensionless unit stream power, and sediment concentration. A total of 3,391 sets of laboratory and river data are used in the tests. Engineers may find the test results useful to their selection of formulas under different flow and sediment conditions.Chih Ted YANG and Caian HUANG Manager, Sedimentation and River Hydraulics Group, Technical Service Center, U.S. Bureau of Reclamation, Denver, Colorado 80225. Graduate student, College of Harbour, Waterway and Coastal Engineering, Hohai University, Nanjin 2001International Journal of Sediment Research2001,16,3:4
5HYDRODYNAMIC FORCES FOR OVERTOPPING SPILLWAYS显示文摘Expressions are derived for calculating hydrodynamic forces from the unit dis-charge,channel slope,and flow and velocity profiles on an overflow spillway.A sample prob-lem is included to illustrate the use of the ideas presented and magnitudes of hydrodynamic forcesfor a 50-foot-high embankment dam.Ashok K.Chugh U.S.Department of the Interior,Bureau of Reclamation Eugineering and Research,Deuver,Colorado 80225 1993Journal of Hydrodynamics1993,5,2:3
6Dimethyl sulfide in the atmospheric surface layer of the Equatorial Pacific Ocean显示文摘This paper reports a case study of atmospheric stability effect on dimethyl sulfide(DMS) concentration in the air. Investigation includes model simulation and field measurements over the Pacific Ocean. DMS concentration in surface sea water and in the air were measured during a research cruise from Hawaii to Tahiti. The diurnal variation of air temperature over the sea surface differed from the diurnal cycle of sea surface temperature because of the high heat capacity of sea water. The diurnal cycle of average DMS concentration in the air was studied in relation to the atmospheric stability parameter and surface heat flux. All these parameters had minima at noon and maxima in the early morning. The correlation coefficient of the air DMS concentration with wind speed (at 15 m high) was 0. 64. The observed concentrations of DMS in the equatorial marine surface layer and their diurnal variability agree well with model simulations. The simulated results indicate that the amplitude of the cycle and theLi Xingsheng F. Parungo, C. Nagamoto and S. Hoyt Chinese Academy of Meteorological Sciences, State Meteorological Administration, Beijing 100081 , China Air Resources Laboratory, NOAA/ERL, Boulder, Colorado, U. S. A. Environmental Analytical Service, San Luis Obispo, California, U. S. A. 1993Acta Oceanologica Sinica1993,12,1:2
7CLM3-simulated soil moisture in East Asia and its possible response to global warming during 1979 through 2003显示文摘Hydrological processes related to soil moisture play an important role in determining regional and global climate. In this study, using a state-of-art Community Land Model (CLM) developed by the National Center for Atmospheric Research (NCAR), we simulated soil moisture in East Asia and its possible response to global warming through a long off-line experiment under 0.5° (longitude) × 0.5° (latitude) resolution and real atmospheric forcing of the National Center for Environmental Protection/ Department of Energy (NCEP/DOE) reanalysis during 1979 through 2003. The 25-year simulation is examined and compared with limited observations. The results can be summarized as follows: (1) Soil moisture takes time in response to the atmospheric forcing. The equilibration time depends on the depth of the soil and is as much as 20 years in deep layers (>1.5 m); (2) In comparison with observations, the CLM reasonably reproduces the seasonal and inter-annual variability, spatial structure, and vertical pattern of soil moisture in East Asia; (3) The soil tends to be drier in the past 25 years in northeastern Asia-including northern China north of 30°N-while wetter in the southern China and the Tibetan Plateau, especially in summer. Our analysis shows that the regional drying is attributed to increase of the land-surface evaporation induced by global warming.ChuanLi Du 1,2*, XiaoDong Liu 1, WanLi Wu 31. State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment,Chinese Academy of Sciences, Xi’an, Shaanxi 710075, China.2. Shaanxi Provincial Meteorological Institute, Xi’an, Shaanxi 710014, China.3. National Center for Atmospheric Research, Boulder, Colorado 80307, USA. 2009Research in Cold and Arid Regions2009,1,1:2
8全球气候研究计划 (WCRP)中的气候与冰冻圈项目 (CliC) :冰冻圈与气候的优先研究领域 (英)显示文摘The cryosphere is an integral part of the global climate system, however, many aspects of the cryosphere have not been fully covered within WCRP. Issues relating to potential changes in the climate cryosphere system become more and more important in order to describes research and coordination initiatives required to integrate fully studies of impact and response of the cryosphere to climate change. The article also indicates the recent progress of CliC, and its future plan.Roger G. Barry (National Snow and Ice Data Center, University of Colorado, Boulder, CO, 80309-0449, USA) 2002冰川冻土2002,24,5:2
9AN INTRODUCTION TO THE PMESC PARALLEL PROGRAMMING PARADIGM AND LIBRARY FOR TASK PARALLEL COMPUTATION显示文摘ANINTRODUCTIONTOTHEPMESCPARALLELPROGRAMMINGPARADIGMANDLIBRARYFORTASKPARALLELCOMPUTATIONS.CrivelliE.R.Jessup(DepartmentofCompu...S. Crivelli E.R. Jessup(Department of Computer Science University of Colorado Boulder, CO 50309-0430 USA)(crivells@colorado.edu jessup@cs .colorado.edu) 1996Wuhan University Journal of Natural Sciences1996,1,Z1:2
10Distinct antitumor properties of a type IV collagen domain derived from basement membrane显示文摘Maeshima Y Colorado PC Torre A 2000J Biol Chem2000,275,21:1
11显示文摘Kamphaus GD Colorado PC Panka DJ 2000J Biol Chem2000,275,2:1
12De- velopment and experimental validation of a computational model for a helically coiled steam generator 显示文摘COLORADO D PAPINI D HERNANDEZ J A 2011Interna- tional Journal of Thermal Sciences2011,50,4:1
13Standing waves of some coupled nonlinear Schr6dinger equations 显示文摘Ambrosetti A Colorado E 2007J London Math Soc2007,75,2:1
14Distinct antitumor properties of a type Ⅳ collagen domain derived from basement membrane显示文摘Maeshima Y Colorado P C Torre A 2000Biol Chem2000,275,21:1
15Distinct antitumor properties of a type Ⅳ collagen domain derived from basement membrane 显示文摘Maeshima Y Colorado PC Torre A 2000J Biol Chem2000,275,21:1
16Canstatin, a novel matrixderived inhibitor of angiogenesis and tumor growth 显示文摘Kamphaus GD Colorado PC Panka DJ 2000J Biol Chem2000,275,2:1
17Canstatin, a novel matrix-derived inhibitor of angiogenesis and tumor growth 显示文摘 Colorado PC Panka DJ 2000J Biol Chem2000,275,:1
18Hypoxia-inducible factor plays a gut-injurious role in intestinal ischemia reperfusion injury显示文摘Kannan KB Colorado I Reino D 2011Am J Physiol Gastrointest Liver Physiol2011,300,5:1
19CFD simulation of mechanical draft tube mixing in anaerobic digester tanks显示文摘Robert N Meroney Colorado P E 2009Water Research2009,43,4:1
20Interfacial polymerized polyaniline/graphite oxide nanocomposites toward electrochemical energy storage显示文摘Jiahua Zhu Minjiao Chen Honglin Qu Xi Zhang Huige Wei Zhiping Luo Henry A. Colorado Suying Wei Zhanhu Guo 2012Polymer2012,,25:1
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