0:13:15
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用等离子体基注入技术构建医用可降解镁合金的临时性功能表面（1)
- 2014中国功能材料科技与产业高层论坛——医用可降解镁合金的降解本质上是其在生理环境中的腐蚀。与传统医用植人金属不同，可降解镁合金在人体服役过程中与周围组织的界面是动态的，其降解过程伴随着氢气的析出和表面的碱化。若降解速度过快，会影响植入体周围组织的愈合。等离子体基离子注人是一种重要的材料表面改性技术，它克服传统离子注人视线加工的缺陷，可处理复杂形状工件，非常适用于医用植人器件的表面处理。最近我们利用等离子体基注人技术发展了多种镁合金表面改性工艺来控制其降解行为和改善生物相容性。另外，我们还发现将锆和氧联合注人技术应用于镁合金时不但能改善其细胞相容性，而且还能使表面具有一定的抗菌功能。体外实验证实这种表面改性层可在模拟体液中最终降解。
- 关键字:可降解镁合金等离子表面改性技术医用植入器件
0:14:18
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用等离子体基注入技术构建医用可降解镁合金的临时性功能表面（2)
- 2014中国功能材料科技与产业高层论坛——医用可降解镁合金的降解本质上是其在生理环境中的腐蚀。与传统医用植人金属不同，可降解镁合金在人体服役过程中与周围组织的界面是动态的，其降解过程伴随着氢气的析出和表面的碱化。若降解速度过快，会影响植入体周围组织的愈合。等离子体基离子注人是一种重要的材料表面改性技术，它克服传统离子注人视线加工的缺陷，可处理复杂形状工件，非常适用于医用植人器件的表面处理。最近我们利用等离子体基注人技术发展了多种镁合金表面改性工艺来控制其降解行为和改善生物相容性。另外，我们还发现将锆和氧联合注人技术应用于镁合金时不但能改善其细胞相容性，而且还能使表面具有一定的抗菌功能。体外实验证实这种表面改性层可在模拟体液中最终降解。
- 关键字:可降解镁合金等离子表面改性技术医用植入器件
0:15:07
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The Power Transmission Technique for Hybrid Electric Vehicles（1）
- The 6th Asia-Pacific Power and Energy Engineering Conference (APPEEC 2014)——To solve the problem of energy crisis and environmental pollution, electric vehicle is considered as one of the essential solutions. There are mainly three types of electric vehicles: battery electric vehicles, hybrid electric vehicles, and fuel cell electric vehicles. With the technology of batteries considered, hybrid electric vehicles are more realistic. There are three kinds of hybrid electric vehicles: series, parallel, and series-parallel hybrid electric vehicles. The topologies and features of different hybrid electric vehicles are introduced. A kind of series-parallel hybrid electric vehicle, which is called compound-structure permanent-magnet synchronous machine (CS-PMSM), is discussed deeply.
- 关键字:电池电动汽车 混合动力电动汽车 燃料电池电动汽车 能源危机 环境污染
0:16:25
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The Power Transmission Technique for Hybrid Electric Vehicles（2）
- The 6th Asia-Pacific Power and Energy Engineering Conference (APPEEC 2014)——To solve the problem of energy crisis and environmental pollution, electric vehicle is considered as one of the essential solutions. There are mainly three types of electric vehicles: battery electric vehicles, hybrid electric vehicles, and fuel cell electric vehicles. With the technology of batteries considered, hybrid electric vehicles are more realistic. There are three kinds of hybrid electric vehicles: series, parallel, and series-parallel hybrid electric vehicles. The topologies and features of different hybrid electric vehicles are introduced. A kind of series-parallel hybrid electric vehicle, which is called compound-structure permanent-magnet synchronous machine (CS-PMSM), is discussed deeply.
- 关键字:电池电动汽车 混合动力电动汽车 燃料电池电动汽车 能源危机 环境污染
0:15:32
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Behavior of HAWT with differential planetary gearbox
- The 6th Asia-Pacific Power and Energy Engineering Conference (APPEEC 2014)——A dynamic model for simulating behavior of a horizontal axis wind turbine (HAWT) with differential planetary gearbox is developed. The aerodynamic load applied to the wind turbine connected with the carrier is described using the quasi-steady approach. The control torque is assumed to be applied to the external ring of the gearbox. Steady regimes of the device are analyzed, and their stability is studied. For the case of constant control torque, power costs are esti-mated required for preserving constant angular speed of the generator.
- 关键字:风力涡轮机 电力成本 动态模型 差动行星齿轮箱 水平轴风力机
0:19:20
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Behaviour of Couple Stress Fluids in Porous Annular Squeeze Films
- The 5th ENGII Conference——The laminar squeeze flow of an incompressible couple stress fluid between porous annular disks is studied using hydrodynamic lubrication theory. The modified Reynolds' equation is derived using Stokes microcontinuum theory and is solved analytically. Analytical expressions for the squeeze film pressure and the load carrying capacity are obtained in terms of Fourier-Bessel series. Numerical results are obtained for the sinusoidal motion of the upper disk. The effect of couple stresses and that of porous facing on the squeeze film behaviour are analysed through the squeeze film pressure and the load carrying capacity. Further, the equation for the gap width between the disks is obtained from the inverse problem.
- 关键字:应力偶流体 多孔环形紧缩膜 流体动力 雷诺方程
0:14:58
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Linear Instability of the Supersonic Boundary Layer on a Compliant Surface
- The 5th ENGII Conference——In the paper the influence of flexible covering properties on the linear development of disturbances in a supersonic boundary layer is investigated for Mach numbers M = 1.0, 2.0, 5.3, 6.0. As a model of a covering the porous plate closed by a flexible film is used. In the absence of gas in pores it is established that the flexible covering stabilizes boundary layer in the area of large Reynolds numbers and destabilizes it at small Reynolds numbers. Joint influence of the thickness and tension of a film leads to an appearance of additional unstable waves. For filled with gas pores the researches are conducted as taking into account losses of energy of disturbances in pores and in their absence. Calculations without power losses indicate possibility of existence of an absolute instability of the boundary layer on the flexible surface. The damping properties of a flexible covering connected with power losses in pores reduce their stabilizing role.
- 关键字:超音速边界层 兼容表面 线性不稳定性
0:12:19
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New kinematic parameters of the finite rotation of a rigid body
- The 5th ENGII Conference——A new family of kinematic parameters for the orientation of a rigid body (global and local) is presented and described. All the kinematic parameters are obtained by mapping the variables onto a corresponding orientated subspace (hyperplane).
- 关键字:运动学参数 刚体 映射
0:09:01
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Numerical and Experimental Investigation on Physical Properties of Some Stones Existing in Several Regions of Turkey
- The 5th ENGII Conference——In present study, some of physical properties of some stones existing in several regions of Turkey are held under microscope. Some measurements such as heat conductivity, heat capacity, water absorption, respiration and mechanical strength were performed to the specimens from various regions of Turkey. After that, a numerical analysis has been performed by using ANSYS software, which uses finite element methodology.
- 关键字:建筑材料 物理性质 数值分析 土耳其
0:11:31
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纳米储能材料的制备与柔性混合型超电容器件研究（2）
- 第六届中国储能与动力电池及其关键材料学术研讨与技术交流会——本片由中山大学化学与化学工程学院童叶翔教授介绍了以商用的碳布或自制备的聚苯胺和多孔碳薄膜作为柔性导电基体，通过电化学方法和水热法成功地制备了多种过渡金属基正极材料和纳米负极材料，幷开展了柔性混合型超电容器件的构造与储能机理的研究内容。
- 关键字:混合型超电容 过渡金属基储能材料 柔性纳米储能材料 电化学方法 水热法