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| 1 | Validation of a discrete element model using magnetic resonance measurements显示文摘The discrete element model(DEM)is a very promising modelling strategy for two-phase granular systems.However,owing to a lack of experimental measurements,validation of numerical simulations of two-phase granular systems is still an important issue.In this study,a small two-dimensional gas- fluidized bed was simulated using a discrete element model.The dimensions of the simulated bed were 44 mm×10 mm×120 mm and the fluidized particles had a diameter dp=1.2 mm and density p=1000 kg/m3.The comparison between DEM simulations and experiments are performed on the basis of time-averaged voidage maps.The drag-law of Beetstra et al.[Beetstra,R.,van der Hoef,M.A.,&Kuipers,J. A.M.(2007b).Drag force of intermediate Reynolds number flow past mono-and bidispersed arrays of spheres. AIChE Journal,53,489–501]seems to give the best results.The simulations are fairly insensitive to the coefficient of restitution and the coefficient of friction as long as some route of energy dissipation during particle–particle and particle–wall contact is provided.Changing the boundary condition of the gas phase at the side-walls from zero-slip to full-slip does not affect the simulation results.Care is to be taken that the cell sizes are chosen so that a reasonable number of particles can be found in a fluid cell. | Christoph R.Müller Stuart A.Scott Daniel J.Holland Belinda C.Clarke Andrew J.Sederman John S.Dennis Lynn F.Gladden | 2009 | Particuology2009，7，4： | 7 |
| 2 | 大骨节病死亡受体途径调节因子表达的组织学改变显示文摘目的观察大骨节病软骨组织中Fas相关死亡结构域蛋白(FADD)和细胞FLICE抑制蛋白(c-FLIP)表达的变化,明确其在大骨节病软骨损伤中的作用。方法将依据大骨节病和骨关节病诊断标准收集的软骨分为大骨节病组(KBD)、骨关节病组(OA)和正常对照组。采用免疫组化染色法检测3组关节软骨的死亡受体调节因子FADD和c-FLIP表达变化,并在显微镜下计数和比较3组关节软骨不同层间阳性表达率的显著性差异。结果(1)KBD和OA组软骨[分别为(28.68±2.19)%和(35.40±2.34)%]中层FADD表达显著较正常组增高(F=16.245,P=0.000),而在表、深层3组间均无显著差异(P=0.206,P=0.761);(2)FADD在KBD软骨中表达以中层最高,为(28.68±5.38)%,其次为深层的(17.94±8.38)%;(3)KBD和OA软骨表层FLIP表达均显著低于正常组(F=5.929,P=0.018),而中层和深层与正常组间均无显著差异。结论 KBD软骨中层FADD显著上调,而软骨表层FLIP表达显著下调,表明死亡受体途径及其调节因子在大骨节病软骨损伤中具有重要作用。 | 武世勋 郭雄 刘江涛 张增铁 Bannel S.Dennis 张银刚 | 2011 | 南方医科大学学报2011，31，11： | 3 |
| 3 | The transcription factor ATAF2 represses the expression of pathogenesis‐related genes in Arabidopsis显示文摘 | ChristianDelessert KemalKazan Iain W.Wilson Dominique Van DerStraeten JohnManners Elizabeth S.Dennis RudyDolferus | 2005 | The Plant Journal2005，，5： | 2 |
| 4 | Magnetic resonance studies of a gas-solids fluidised bed:Jet-jet and jet-wall interactions显示文摘Magnetic resonance imaging(MRI)gave images of air jets from orifices in the distributor plate of a bed of poppy seeds.Attention focused on two features:(1)The interaction between nearby vertical jets from two,three or four orifices;(2)Wall effects,where one or more orifices created vertical jets near the vertical wall of the cylinder containing the particle bed.The results show that nearby jets are mutually attracted.Likewise a jet near a wall bends out of the vertical,towards the wall.For multiple adjacent jets,the jet lengths show dependence on orifice layout:the lengths are in reasonable agreement with published measurements,by other methods,for single jets.The MRI gives three-dimensional images of the single jets and of multiple jets,separate or merging. | Meenal Pore Daniel J.Holland Thusara C.Chandrasekera Christoph R.Müller Andrew J.Sederman John S.Dennis Lynn F.Gladden John F.Davidson | 2010 | Particuology2010，8，6： | 2 |
| 5 | Control of flowering time by FLC orthologues in Brassica napus显示文摘 | MillionTadege Candice C.Sheldon Chris A.Helliwell PeterStoutjesdijk Elizabeth S.Dennis | 2001 | The Plant Journal2001，，5： | 1 |
| 6 | Effective Prophylaxis for Deep Vein Thrombosis After Stroke显示文摘 | Martin S.Dennis MD | | 0，，： | 1 |
| 7 | The VQ motif protein IKU1 regulates endosperm growth and seed size in Arabidopsis显示文摘 | AihuaWang DamienGarcia HongyuZhang KeFeng AbedChaudhury FredBerger William JamesPeacock Elizabeth S.Dennis MingLuo | 2010 | The Plant Journal2010，，4： | 1 |
| 8 | Imaging appearance of the symptomatic perforating artery in patients with lacunar infarction: Occlusion or other vascular pathology?显示文摘 | Joanna M.Wardlaw Martin S.Dennis Charles P.Warlow Peter A.Sandercock | 2001 | Ann Neurol2001，，： | 1 |
| 9 | The Arabidopsis FLC protein interacts directly in vivo with SOC1 and FT chromatin and is part of a high‐molecular‐weight protein complex显示文摘 | Craig C.Wood MasumiRobertson W.James Peacock Elizabeth S.Dennis | 2006 | The Plant Journal2006，，2： | 1 |
| 10 | Mobile silencing in plants:what is the signal and what defines the target显示文摘RNA-mediated silencing in plants can spread from cell to cell and over a long distance,and such mobile silencing has been extensively studied in the past decade.However,major questions remain as to what is the exact nature of the mobile silencing signals,how the components of the RNA-directed DNA methylation pathway are involved,and why systemic spread of silencing has only been observed for transgenes but not endogenous genes.In this review,we provide an overview of the current knowledge on mobile gene silencing in plants and present a model where systemic silencing involves long nuclear RNA transcripts that serve as a template to amplify primary siRNA signals. | Dacheng LIANG E.Jean FINNEGAN Elizebeth S.DENNIS Peter M.WATERHOUSE Ming-Bo WANG | 2011 | Frontiers in Biology2011，6，2： | 0 |
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