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| 1 | 道砟劣化的二维图像分析及形状特性研究显示文摘道砟劣化导致颗粒形态的变化,从而影响道砟使用性能。为探究道砟劣化机理及其表现形式,采用洛杉矶磨耗试验研究道砟劣化过程,通过AIMS集料图像测量系统获得道砟磨耗前后的颗粒图像以及形状指标,结合污染指数(FI)来讨论道砟劣化时的形状特性变化。研究结果表明:道砟劣化主要表现为大粒径颗粒尖角破裂和边缘磨损,使得表面和边缘纹理整体更平滑圆润。随着磨耗试验转动圈数的增加,FI值增加的速率逐渐变慢,长扁度、棱角度及粗糙度指数减小的速率也降低。研究结果对道砟劣化评估及养护维修具有参考意义。 | 聂志红 陈星臣 Ashiru Mohammed Mohamud Saidhussein | 2020 | 铁道科学与工程学报2020，17，11： | 3 |
| 2 | Regulation of NKG2D ligand gene expression 显示文摘 | EAGLE RA TRAHERNE JA ASHIRU O | 2006 | Hum Immunol2006，67，3： | 1 |
| 3 | Natural killer cell cytotoxicity is suppressed by exposure to the human NKG2D ligand MICA ~ 008 that is shed by tumor cells in exosomes显示文摘 | Ashiru O Boutet P Fernfindez-Messina L | 2010 | Cancer Res2010，70，2： | 1 |
| 4 | Discrete element simulation of effects of multicontact loading on single particle crushing显示文摘Particle crushing commonly occurs in granular materials and affects their structures and mechanical properties.Unlike idealized particles in experimental single particle crushing tests with two loading points,natural particles are crushed under multicontact loading.To date,the criteria and patterns of par-ticle crushing under multicontact conditions are not fully understood.By using the three-dimensional discrete element method,this report explores the effect of multicontact loading on the crushing criterion of a single particle,the crushing pattern,and the relationship between the particle crushing strength and loading distribution.The particles are modelled as aggregates of glued Voronoi polyhedra.The numer-ical results indicate that the logarithm of the mean principal stress has a good linear correlation with the coordination number.For a specific coordination number,the number of child particles presents a significant normal distribution.For a specific number of child particles,the volumes of child particles can be statistically described as normal or gamma distribution.Three typical models are proposed to qual-itatively analyse the relationship between the loading distribution and crushing strength.The relevant conclusions can be helpful in engineering practice and in further studies on crushable granular materials via the discrete element method. | Chuanfeng Fang Zhihong Nie Jian Gong Bo Li Wei Hu Ashiru Mohammed | 2022 | Particuology2022，20，10： | 1 |
| 5 | Transport and Climate Change: Simulating the Options for Carbon Reduction in London 显示文摘 | Hickman R Ashiru O Banister D | 2010 | Transport Policy2010，17，2： | 1 |
| 6 | Transport and Climate Change : Simulating the Options for Carbon Reduction in London 显示文摘 | Hickman R Ashiru O Banister D | 2010 | Transport Policy2010，17，： | 1 |
| 7 | Natural killer cell cytotoxicity is suppressed by exposure to the human NKG2D ligand MICA ~ 008 that is shed by tumor ceils in exosomes显示文摘 | Ashiru O Boutet P Fernandez-Messina L etal | 2010 | CancerRes2010，70，： | 1 |
| 8 | Electrodeposition and characterization of tin-zinc alloy coatings显示文摘 | Ashiru O A Shirokoff J | | 0，，02： | 1 |
| 9 | Human cytomegalovirus encodes an MHC class Ⅰ-like molecule (UL142) that functions to inhibit NK cell lysis显示文摘 | Wills MR Ashiru O Reeves MB | 2005 | J Immunol2005，175，11： | 1 |
| 10 | NKG2D ligand MICA is retained in the cis-Golgi apparatus by human cytomegalovirus protein UL142显示文摘 | Ashiru O Bennett NJ Boyle LH | 2009 | J Virol2009，83，12： | 1 |
| 11 | Intracellular sequestration of the NKG2D ligand ULBP3 by human cytomegalovirus显示文摘 | Bennett NJ Ashiru O Morgan FJ | 2010 | J Immunol2010，185，2： | 1 |
| 12 | Differential mechanismsof shedding of the glyeosylphosphatidylinositol (GPI)-anchored NKG2D ligands显示文摘 | Fernandez-Messina L Ashiru O Boutet P | 2010 | J Biol Chem2010，285，： | 1 |
| 13 | Natural killer cell cytotoxicity is suppressed by exposure to the human NKG2D ligand MICA^* 008 that is shed by tumor cells in exosomes显示文摘 | Ashiru O Boutet P Fernandez-Messina L | 2010 | Cancer Res2010，70，2： | 1 |
| 14 | Regulation of NKG2D ligand gene expression 显示文摘 | Eagle RA Traherne JA Ashiru O Wills MR Trowsdale J | 2006 | Hum Immunol2006，67，3： | 1 |
| 15 | NKG2D ligand MICA is retained in the cis-Golgi apparatus by human cytomegalovirus protein UL142显示文摘 | Ashiru O Bennett NJ Boyle LH | | 0，，23： | 1 |
| 16 | Transitions to low carbon transport futures: strategic conversations from London and Delhi 显示文摘 | Hickman R Ashiru O Banister D | 2011 | Journal of Transport Geography2011，19，： | 1 |
| 17 | Transport and ClimateChange:Simulating the Options for Carbon Reduction in London显示文摘 | HICKMAN R ASHIRU O BANISTER D | 2010 | Transport Policy2010，17，2： | 1 |
| 18 | Transport and Cli- mate change: Simulating the options for carbon redue- tioninLondon显示文摘 | Hickman R Ashiru O Banister D | 2010 | Transport Policy2010，17，2： | 1 |
| 19 | Characteristics of a genetic based approach to path planning for mo bile robots 显示文摘 | ASHIRU I CZARNECKI C ROUTEN T | 1996 | Journal of Network and Computer Applications1996，19，2： | 1 |
| 20 | Characteristics of a genetic based approach to path planning for mobile robots显示文摘 | Ashiru I Czarnecki C Routen T | 1996 | Journal of Network and Computer Applications1996，19，2： | 1 |
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