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| 1 | 泥炭分子化石记录气候变迁和生物演替的信息显示文摘以一个40cm长泥炭岩芯的气相色谱(GC)和气相色谱-质谱(GC-MS)分析为基础,结合现有的湖相记录资料,提出苔藓植物C23正构烷烃主峰标志了一种寒冷气候的信息.现代苔藓植物化学成分与气候关系的分析,以及生态学上有关气候影响生物生长方式的资料,支持了泥炭中仅在第2个小冰期出现 C23正构烷烃呈指数形式变化的现象与寒冷气候有关这一结论,显示了这一相当常见的分子化石可以高精度地记录气候变迁的非常信息.酮/酯比值、C24正构单烯烃/C24正构烷烃比值,与生物分布具有很好的对应关系,标记了苔鲜植物与单子叶被子植物之间的取代关系. | 谢树成 R.P.Evershed LIU Xiang WANG Buxuan | 2001 | 科学通报2001,46,10: | 46 |
| 2 | Internal heat transfer coefficients in microporous media with rarefaction effects显示文摘The internal heat transfer of different gases in microporous media was investigated experimentally and numerically.The experimental test section had a sintered bronze porous media with average particle diameters from 11 μm to 225 μm.The Knudsen numbers at the average inlet and outlet pressures of each test section varied from 0.0006 to 0.13 with porosities from 0.16 to 0.38.The particle-to-fluid heat transfer coefficients of air,CO 2 and helium in the microporous media were determined experimentally.The results show that the Nusselt numbers for the internal heat transfer in the microporous media decrease with decreasing the particle diameter,d p,and increasing Knudsen number for the same Reynolds number.For Kn>0.01,the rarefaction affects the internal heat transfer in the microporous media.A Nusselt number correlation was developed that includes the influence of rarefaction.The computational fluid dynamics(CFD) numerical simulation was carried out to do the pore scale simulation of internal heat transfer in the microporous media considering the rarefaction effect.Pore scale three-dimensional numerical simulations were also used to predict the particle-to-fluid heat transfer coefficients.The numerical results without slip-flow and temperature jump effects for Kn<0.01 corresponded well with the experimental data.The numerical results with slip-flow and temperature jump effects for 0.01 | XU RuiNa HUANG YuLi JIANG PeiXue WANG BuXuan | 2012 | Science China(Technological Sciences)2012,55,10: | 4 |
| 3 | ADSORPTION OF NANO-PARTICLES ON BUBBLE SURFACE IN NANO-PARTICLE SUSPENSION显示文摘The adsorption of nano-particles on bubble surface is discussed for saturated boiling on thin wire of nano-particle suspensions. Owing to the decrease of surface tension for suspensions, the nano-particles tend to adsorb on the bubble surface to decrease the Gibbs free energy for stability, and meanwhile the velocity of nano-particles would be smaller than that of bubble growth. The long-range van der Waals force existing between 'water particles' and nano-particles is considered the attractive force between the nano-particles and the bubble surface. Thus, the nano-particles would attach on the bubble surface if the particle-surface distance is smaller than its critical value. The distribution of nano-particles on the bubble surface and in the adjacent region is also investigated. | Buxuan Wang Chunhui Li Xiaofeng Peng | 2005 | China Particuology2005,3,4: | 3 |
| 4 | Scaling effect of breakthrough character in porous media显示文摘Breakthrough phenomenon during fluids percolating through wet saturated porous layer is widely met in the study of heat and mass transfer in porous media. Breakthrough pressure (BP) is a characteristic pressure that indicates the intrinsic properties of seepage within porous media. Measuring results of BP for saturated narrow-sieved sand are reported here. The curve of BP varying with the height of porous layer was obtained. Experiment and analysis indicate that BP is independent of the height of particle packed layer if thick enough; however, when the height is less than a certain critical value, BP diminishes with the decrease of the height according to a universal scaling law. | Xuejiao Hu Jianhua Du Xiang Liu Buxuan Wang | 2001 | Chinese Science Bulletin2001,46,10: | 3 |
| 5 | Jet flows from bubbles during subcooled pool boiling on micro wires显示文摘 | Hao Wang D. M. Christopher Xiaofeng Peng Buxuan Wang | 2005 | Science in China Ser E Engineering & Materials Science2005,,4: | 2 |
| 6 | A novel concept for convective heat transfer enhancement 显示文摘 | GUO Zengyuan LI Zhixing WANG Buxuan | 1998 | Heat Mass Transfer1998,41,14: | 1 |
| 7 | Field Synergy Principle for Enhancing Convective Heat Transfer: Its Exten- sion and Numerical Verifications 显示文摘 | Tao Wenquan Guo Zengyuan Wang Buxuan | 2002 | Int J Heat Mass Trans- fer2002,45,18: | 1 |
| 8 | A method for evaluation of heat and mass transport properties of moist porous media 显示文摘 | WANG Buxuan YU Weiping | 1988 | International Journal of Heat and Mass Transfer1988,31,5: | 1 |
| 9 | A fractal model for predicting the effective thermalconductivity of liquid with suspension of nanoparticles显示文摘 | Wang Buxuan Zhou Leping Peng Xiaofeng | 2003 | Int J Heat and Mass Transfer2003,46,: | 1 |
| 10 | Influence of Marangoni flow on the melting process显示文摘 | Lin Xueping Peng Xiaofeng Wang Buxuan | 1997 | Prog Nat Sci1997,7,5: | 1 |
| 11 | Energy analysis of evaporating thin falling film instability in vertical tube 显示文摘 | Du Xiaoze Wang Buxuan Wu Shaorong | 2001 | International Journal of Heat and Mass Transfer2001,79,4: | 1 |
| 12 | Bubble circling phenomena in subcooled nucleate pool boiling on microwires显示文摘 | Leping Zhou Longting Wei Yuanyuan Li Xiaoze Du Buxuan Wang | 2013 | International Journal of Heat and Mass Transfer2013,,: | 1 |
| 13 | A fractal model for predicting the effective thermal conductivity of liquid with suspension of nanoparticles 显示文摘 | Wang Buxuan Zhou Leping Peng Xiaofeng | 2003 | International Journal of Heat and Mass Transfer2003,46,14: | 1 |
| 14 | Jet flows from bubbles during subcooled pool boiling on micro wires显示文摘 | Hao Wang D. M. Christopher Xiaofeng Peng Buxuan Wang | 2005 | Science in China Ser E Engineering & Materials Science2005,,4: | 1 |
| 15 | Size effect on two-phase regime for con- densation in micro/minitubes 显示文摘 | Li Junming Wang Buxuan | 2003 | - Heat Transfer--Asian Research2003,32,1: | 1 |
| 16 | A Prac- tal Model for Predicting the Effective Thermal Conduc- tivity of Liquid With Suspension of Nanoparticles 显示文摘 | WANG Buxuan ZHOU Leping PENG Xiaofeng | 2003 | In- ternationM Journal of Heat and Mass Transfer2003,46,: | 1 |
| 17 | Forced Convective Heat Transfer in a Porous Plate Channel显示文摘Forced convective heat transfer in a plate channel filled with metallic spherical particles was investigated experimentally and numerically. The test section, 58 mm×80mm×5mm in size, was heated by a 0.4 mm thick plate electrical heater. The coolant water now rate ranged from 0.015 to 0.833 kg/s.The local wall temperature distribution was measured along with the inlet and outlet fluid temperatures and pressures. The results illustrate the heat transfer augmentation and increased pressure drop caused by the porous medium. The heat transfer coefficient was increased 5-12 times by the porous media although the hydraulic resistance was increased even more. The Nusselt number and the heat transfer coefficient increased with decreasing particIe diameter, while the pressure drop decreased as the particle diameter increased. It was found that, for the conditions studied (metallic packed bed),the effect of thermal dispersion did not need to be considered in the physical model, as opposed to a non-metallic packed bed, where thermal dispersion is important. | Peixue Jiang Zhan Wang Zepei Ren Buxuan Wang (Department of Thermal Engineering, Tsinghua University, Beijing 100084, China) | 1997 | Journal of Thermal Science1997,6,3: | 1 |
| 18 | Research on measuring the flame temperature distribution by engineering thermophysics, Using image processing technology 显示文摘 | Wang Buxuan Li Tianduo Wu Zhansong | 1989 | Journal1989,10,4: | 1 |
| 19 | A novel concept for convective heat transfer enhancement显示文摘 | Guo Zengyuan Li Deyi Wang Buxuan | 1998 | International Journal of Heat and Mass Transfer1998,41,14: | 1 |
| 20 | A novel con- cept for convective heat transfer enhancement 显示文摘 | GUO Zengyuan LI Deyu WANG Buxuan | 1998 | Inter- national Journal of Heat and Mass Transfer1998,41,14: | 1 |