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56篇 您的检索式:作者名="Yu Aibing"
    题名 作者 年代 出处 被引量
1水平气力输送系统中颗粒波状流的模拟显示文摘对用于两相流计算的硬球模型进行简化 ,模拟了水平气力输送系统中颗粒波的动态流型。模型中 ,气体状态由两相耦合的 Navier- Stokes方程描述 ,颗粒运动通过单颗粒的运动轨迹描述。并且 ,颗粒的碰撞运动由冲量守恒原理控制 ,颗粒的悬浮运动由力平衡方程决定 ,相间耦合作用依据牛顿第三定律处理。模拟结果从介观层次呈现了水平气力输送系统中与实验特征吻合的颗粒波状流 ,说明了颗粒波的传播速度取决于气体速度 ,它并不敏感地依赖于系统中的存料量及物料密度。欧阳洁 孙国刚 YU Aibing 2003西北工业大学学报2003,21,6:10
2固体燃料流化床富氧燃烧的研究动态与进展显示文摘二氧化碳捕集与利用是全球学术界和工业界关注的热点,也是燃烧科学技术领域的前沿和难点。固体燃料的流化床富氧燃烧耦合了流化床燃烧和富氧燃烧的诸多优点,是最具工业应用前景的燃烧中碳捕集技术之一。为更全面把握该领域最新动态,对近年来流化床富氧燃烧的研究进行了系统梳理,在简述富氧燃烧基本技术原理基础上,分析了国内外的研究动态,总结了主要研究进展,包括单一燃料流化床富氧燃烧、混合燃料流化床富氧燃烧、加压流化床富氧燃烧和新型流化床富氧燃烧,并探讨了固体燃料流化床富氧燃烧技术将来发展趋势和研究重点。刘沁雯 钟文琪 邵应娟 Yu Aibing 2019化工学报2019,70,10:10
3Synthesis of Li_4Ti_5O_(12) nanostructural anode materials with high charge–discharge capability显示文摘This study demonstrates a facile and efficient hydrothermal method to prepare spindle titanate(Li4Ti5O12 denoted as LTO)and/or carbon-LTO nanocomposites(CLTO),in which the LTO or C-LTO microspheres have diameters of a few micrometers,composed of numerous nanosheets with thickness of*30 nm and edge length of hundreds of nanometers.The morphology and size control of these nanoparticles could be achieved by varying experimental parameters including concentration of titanium butoxide,lithium hydroxide,and cetyltrimethylammonium bromide,as well as reaction temperature and time.These micro-nanostructures were characterized by several advanced techniques,such as transmission electron microscopy,scanning electron microscopy,X-ray diffraction,energy dispersive spectroscopic analysis,surface area,and electrochemical measurements.The LTO and C-LTO microstructures were examined in the charge–discharge capacity at a rate of 50 C,as well as the stability after 100 cycles at a rate of 10 C.The excellent capability may be attributed to good conductivity,large surface area,and stable assembly structure of such micro-nanostructures,which could be explored as a promising anode material for lithium-ion batteries.Ru Wen Jeffrey Yue Zifeng Ma Wuming Chen Xuchuan Jiang Aibing Yu 2014Chinese Science Bulletin2014,59,18:8
4煤/生物质流态化富氧燃烧的CO2 富集特性显示文摘流化床富氧燃烧是具有重要应用前景的燃烧中碳捕集技术。为更深入认识固体燃料的流态化富氧燃烧行为,构建了微型流态化反应-质谱联用实验系统,反应器直径10 mm,燃烧温度700~900℃,探索了基于在线质谱分析的流态化燃烧过程特性表征方法,以烟煤和花梨木为对象,研究了煤、生物质及其混合物在富氧气氛和流态化条件下的燃烧行为,重点考察了氧浓度、燃烧温度、煤与生物质质量比对CO_2谱峰曲线形态、反应总时间、起始反应时刻、烟气中富集CO_2体积分数、颗粒燃烧产生CO_2量、CO_2相对生成率等特性的影响。结果表明,在O_2/CO_2燃烧气氛下,随着氧体积分数增加,燃烧总反应时间缩短,颗粒燃烧产生的CO_2量和生成速率均增加,但烟气中富集的CO_2体积分数减小;提高燃烧温度,缩短了燃烧过程所需的时间,可以促进CO_2的富集,烟气中CO_2浓度、颗粒燃烧产生的CO_2量和生成速率均增加;生物质比例增大,起始反应时间提前,燃烧反应所需总时间减少,烟气中富集的CO_2浓度和颗粒燃烧产生的CO_2均减少,但CO_2生成速率增加。刘沁雯 钟文琪 刘雪娇 刘倩 邵应娟 Yu Aibing 2018化工学报2018,69,12:6
5快速流化床颗粒团絮特征的MP-PIC数值模拟显示文摘为了研究快速流化床颗粒的团絮特征,建立了基于多相质点网格法的快速流化床气固多相流三维数理模型,气相场采用大涡湍流模型,通过求解牛顿运动方程得到颗粒相运动信息,气固间相互作用力采用Gidaspow曳力模型,固体间作用力通过计算颗粒应力梯度得到。基于该模型,对三维快速流化床上升管(H=3 m、d=0.1 m)气固流动开展了数值模拟,并与实验进行了校正,研究了在气速工况Ug=5.28 m?s-1下的颗粒(ρp=2650 kg?m-3、dp=250μm)团絮性质,实现了对上升管内颗粒团絮的基本类型(条形团絮、马鞍形团絮、U形团絮)的成功预测,并揭示了不同类型团絮在上升管内形成、发展、聚并直至破碎的演化规律。结果表明,上升管径向颗粒团絮的平均颗粒浓度分布呈现中间低两边高的环核结构,颗粒团絮速度的分布与其相反;随着轴向高度的增加,颗粒团絮的颗粒浓度逐渐降低而速度逐渐增加,但达到一定高度后变化减缓。孙子文 陈岱琳 钟文琪 Aibing Yu 2018化工学报2018,69,8:4
6N-doped ordered mesoporous carbon spheres derived by confined pyrolysis for high supercapacitor performance显示文摘Herein, we report a confined pyrolysis strategy to prepare mesoporous carbon nanospheres by which surface area of carbon spheres is increased, pore size is enlarged and effective N-doping is achieved. In this method, the mesoporous polymer sphere as carbon precursor and 2-methylimidazole as nitrogen precursor are encapsulated in a compact silica shell which provides a confined nano-space for the pyrolysis treatment. The in situ generated gases from mesoporous polymer sphere and 2-methylimidazole under pyrolysis diffuse into the pores of mesoporous polymer sphere in the confined compact silica shell,resulting in increased surface area, larger pore size and N-doping due to self-activation effect. As electrodes in supercapacitor, the N-doped mesoporous carbon nanospheres exhibit a significantly enhanced specific capacitance of 326 Fg^-1 at 0.5 Ag^-1, which is 2 times higher than that of mesoporous carbon spheres under unconfined pyrolysis condition, exhibiting its potential for electrode materials with high performance.Juan Du Lei Liu Yifeng Yu Yue Zhang Haijun Lv Aibing Chen 2019Journal of Materials Science & Technology2019,35,10:4
7CFD-DEM modelling of mixing and segregation of binary mixtures of ellipsoidal particles in liquid fluidizations显示文摘Solid-liquid fluidized beds of binary mixtures are widely used in many industries.Particle segregation may occur as particles can differ in size,density,or shape.Extensive studies have been conducted in the past to understand the effects of particlesize and density on the mixing and segregation,but the effect of particle shape has not been well addressed.Therefore,in the present work,CFD-DEM approach is employed to perform a numerical analysis of the effect of particle shape on the particle mixing and segregation phenomenon in liquid fluidization system.Different particle shapes from oblate to prolate are produced by varying aspect ratio of ellipsoids from 0.25 to 3,and eight binary mixtures of spheres and ellipsoids are examined.The results show that when oblate or prolate particles are added to spheres,the segregation takes place.The segregation degree increases with particle aspect ratio diverging from 1.0 and also liquid superficial velocity.The relationship of mixing index with aspect ratio under different liquid velocities is established,and a detailed explanation is given.It is revealed that increasing the projected area and hence the drag force results in the separation of ellipsoidal particles from spheres.Esmaeil Abbaszadeh Molaei Aibing Yu Zongyan Zhou 2019Journal of Hydrodynamics2019,31,6:3
8Seed-mediated synthesis of dendritic platinum nanostructures with high catalytic activity for aqueous-phase hydrogenation of acetophenone显示文摘This work reports a facile and efficient seed-mediated method for the synthesis of dendritic platinum(Pt)nanoparticles(NPs) at low temperatures of 55–60 °C in water, using L-ascorbic acid as a reducing agent and sodium citrate as a capping agent. It is found that the dendritic Pt NPs(10–150 nm) are composed of tiny Pt nanocrystals, which nucleate and grow through the introduced smaller Pt seeds with diameters of 3–5 nm.Further investigation shows that the dendritic Pt nanostructures display excellent catalytic performance in an aqueous-phase aromatic ketone hydrogenation reaction, including:(i) acetophenone conversion rate of> 90%, with smaller dendritic Pt NPs(10–46 nm) offering a higher conversion efficiency;(ii) high chemoselectivity toward carbonyl group(90.6%–91.5%), e.g., the selectivity to 1-phenylethanol is ~90.1% with nearly100% acetophenone conversion for 10 nm dendritic Pt NPs within 60 min, under mild reaction conditions(20 °C, 1.5 bar H2 pressure, and 1.5 mol% catalyst). The high catalytic activity, selectivity and stability of the dendritic Pt nanostructures under the organic solvent-free conditions make them promising for many potential applications in green catalytic conversion of hydrophilic biomass derived compounds.Yuan Yuan Yusuf Valentino Kaneti Minsu Liu Fangzhu Jin Danielle Frances Kennedy Xuchuan Jiang Jun Huang Aibing Yu 2015Journal of Energy Chemistry2015,24,5:3
9Rapid synthesis and growth of silver nanowires induced by vanadium trioxide particles显示文摘This study demonstrates a novel approach for rapid synthesis of silver(Ag) nanowires induced by vanadium trioxide(V2O3) particles in aqueous solution at room temperature.Silver nanowires have an average diameter of 20 nm and length up to a few micrometers by parametric optimization.The microstructure of the silver nanowires was characterized by TEM,HRTEM,SEM,and XRD techniques.The optical property of the as-prepared product was measured by ultraviolet-visible(UV-vis) spectroscopy.The possible growth mechanism of Ag nanowires via oriented attachment of Ag nanocrystals was discussed.The present approach shows several unique features such as rapid(a few minutes),reproducible and high-yield reaction with no need of any modifiers.V_2O_3 rods were reported for the first time to be used for synthesis of silver nanowires,playing multiple roles as reducing agent,template,and catalyst.The silver nanowires produced are promising for optical applications(e.g.,SERS) due to their rough surface.Haitao Fu Xiaohong Yang Aibing Yu Xuchuan Jiang 2013Particuology2013,11,4:3
10湿颗粒喷动床颗粒聚团特征的实验研究显示文摘建立了内径140 mm、锥角60的可视化锥柱喷动整床和半床实验系统,研究了液含量、颗粒粒径、形状等对床内湿颗粒聚团的影响规律。实验表明:湿颗粒喷动床内有块喷动、死床和非均匀结块三种聚团类型,聚团的出现类型与粒径dp有很大的关系;当dp>1 mm,液体饱和度S>0.2时,容易出现块喷动;当dp<1 mm,S>0.05时,容易出现死床、非均匀结块。在此基础上,从微观颗粒受力分析出发,提出了一种预测湿喷动床内聚团倾向的方法。徐惠斌 钟文琪 Aibing Yu 2017工程热物理学报2017,38,1:2
11Overexpressed DNA-binding protein inhibitor 2 as an unfavorable prognosis factor promotes cell proliferation in nasopharyngeal carcinoma显示文摘现在的学习的目的是在鼻咽的癌(NPC ) 和它与 clinicopathological 特征的关联分析 DNA 有约束力的蛋白质禁止者 2 的表示(ID2 ) 。ID2 的表示显著地在 NPC 房间被增加,这被发现什么时候与那相比在 NP69 房间线。ID2 细胞质的表示的类似的水平在 NPC 被观察什么时候与那相比在非癌的鼻咽纸巾。然而,在原子核的 ID2 的水平在 NPC 被增加什么时候与那相比在正常鼻咽纸巾。而且,原子 ID2 的更高的表示水平显著地与肿瘤被联系尺寸(T 分类) ,淋巴节点转移(N 分类) ,和临床的舞台。有增加的 ID2 表示水平的病人与低 ID2 层次比那些有更差的全面幸存率。在由调停 lentiviral 的短发卡 RNA 的 NPC 房间线 SUNE1 的 ID2 表示的抑制能压制房间增长和殖民地形成,但是没破坏房间移植。由 RNA 干扰将 ID2 的表示击倒能下面调整蜗牛的表示,建议那支持 ID2 的房间生长,部分在 NPC 归因于蜗牛活动的规定。我们的学习证明 ID2 蛋白质的在表示上是在 NPC 支持房间增长的一个相反的预示的因素。Zhen Liu Jing Chen Weiren Luo Huiling Yang Aibing Wu Yan Zhen Xiaoli Yu Hao Wang Kaitai Yao 2012Acta Biochimica et Biophysica Sinica2012,44,6:2
12Grindability evaluation of advanced ceramics 显示文摘Yu Aibing Zhong Lijun Tian Xinli 2004Materials Science Forum2004,,:1
13Synthesis and sintering of tin-doped indium oxide nanoparticals with uniform size显示文摘Xu Huarui Yu Aibing 2007Mater Lett2007,61,:1
14Grindability evaluation of advanced ceramics with AHP approach 显示文摘Wang Min Yu Aibing Zhang Yi 2006Key Engineering Materials2006,,:1
15Numerical Modelling of ESP for Design Optimization显示文摘Baoyu Guo Aibing Yu Jun Guo 2015Procedia Engineering2015,,:1
16Irdluencing of technological param- eter on tools wear during turning fluorophlogopite glass-ce- ramics 显示文摘Ma Lianjie Yu Aibing 2007Journal of Rare Earths2007,25,7:1
17Foreword显示文摘Granular materials are ubiquitous in nature and engineering.They display both fluid- and solid-like behavior with fascinating complexity and remarkable uniqueness. Their behavior at different scales is strongly coupled with each other because of high non-equilibrium constraints and flnite size effects. Understanding and simulating their multi-scale structures and behavior have beenNing Yang Wei Ge Jinghai Li State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China Aibing Yu Laboratory for Simulation and Modeling of Particulate Systems, School of Materials Science and Engineering, The University of New South Wales, Sydney, NSW 2052, Australia 2011Particuology2011,9,4:1
18Silver-induced growth of selenium nanowires in aqueous solution显示文摘Jiang Xuchuan Kemal L Yu Aibing 2007Materials Letters2007,6,11:1
19Numerical simulation of the gas-solid flow in a fluidized bed by combining discrete particle method with computational fluid dynamics 显示文摘Xu Binhao Yu Aibing 1997Chemical Engineering Science1997,52,16:1
20Numerical simulation of the gas-solid flow in a bed with lateral gas blasting 显示文摘Xu Binhao Yu Aibing Chew S J 2000Powder Technology2000,109,123:1
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