thermal_stability_of_modified_layered_silicates清华大学英语系测试：为中小学生英语量身定做.官方网站：http:/qinghua.yeryy.com/ 清华大学英语教授研究组提供A new design paradigm for the development of custom-fit soft sockets for lower limb prosthesesOriginal Research ArticleComputers in Industry, Volume 61, Issue 6, August 2010, Pages 513-523Giorgio Colombo, Stefano Filippi, Caterina Rizzi, Federico RotiniClose preview| Related articles|Related reference work articles AbstractAbstract | Figures/TablesFigures/Tables | ReferencesReferences AbstractThis paper presents a new 3D design paradigm for the development of specific custom-fit products, such as the soft socket of prostheses for lower limb amputees. It is centered on the digital model of the human body and, contrarily to the traditional process almost manually based, it considers the integration of methods and tools coming from different research and application fields: Reverse Engineering, Medical Imaging, Virtual Prototyping, Physics-based Simulation, and Rapid Prototyping. The paper describes the techniques adopted to acquire and create the digital model of the residual limb, the procedure to generate the socket model, the strategy developed for the functional simulation of the socket-stump interaction and, finally, the realization of the physical prototype. Each design step is described with the related problems and the obtained results. Both trans-tibial and trans-femoral amputees have been considered; however, for now the complete process has been validated for trans-tibial prostheses. Major outcomes of the proposed approach stand in a better quality of the final product, in a shorter involvement of the amputee implying a lower psychological impact, in a limited use of physical prototypes, and in a shorter development time. Moreover, the resulting paradigm answers to the Collaborative Engineering guidelines by optimizing the interaction between different domains and enhancing their contributions in a homogeneous development framework.Article Outline1. Introduction2. State of the art 2.1. Socket development process2.2. Computer-aided methods and tools3. The new design paradigm 3.1. Patient morphology acquisition3.2. Geometric modeling of the stump and socket3.3. Physics-based modeling and simulation3.4. Rapid Prototyping3.5. Discussion4. Other potential application fields5. ConclusionsAcknowledgementsReferencesVitaePurchase$ 37.95327Liquid crystalline phases of 1,2-dimethyl-3-hexadecylimidazolium bromide and binary mixtures with waterOriginal Research ArticleJournal of Colloid and Interface Science, Volume 349, Issue 1, 1 September 2010, Pages 224-229Cuihua Li, Jinhua He, Jianhong Liu, Lian-an Qian, Zhenqiang Yu, Qianling Zhang, Chuanxin HeClose preview| Related articles|Related reference work articles AbstractAbstract | Figures/TablesFigures/Tables | ReferencesReferences Abstract1,2-Dimethyl-3-hexadecylimidazolium bromide, which lacks an acidic proton at the C-2 imidazolium ring position, exhibits thermotropic SmA2 phase behavior above its melting point of 90.3C and up to 232.1C. The corresponding layer spacing and the full width at half maximum from XRD patterns display a temperature dependence. In binary mixtures with water, over a concentration range of 4075%, lyotropic liquid crystalline phases form between 0.5 and 25C. The molecules of the new ionic liquid (IL) in the binary mixtures show three different self-assembly processes, namely, formation of rod micelles, coexistence of rod micelles and a hexagonal phase, and a pure hexagonal phase. The distance between the two centers of adjacent columns of cylinder units remains nearly constant at 4.970.04nm when the IL content exceeds 70%, indicating that the cylinder units attain a dense and highly ordered packing.Article Outline1. Introduction2. Materials and methods 2.1. Materials2.2. Self-assembly of binary mixtures and characterization3. Results and discussion 3.1. Self-assembly of neat IL3.2. Self-assembly of the IL in the mixture with water4. SummaryAcknowledgementsReferencesPurchase$ 41.95Graphical abstract1,2-Dimethyl-3-hexadecylimidazolium bromide exhibits a thermotropic SmA2 phase from 90.3 to 232.1C and a lyotropic crystalline phase between 0.5 and 25C in binary mixtures with water.Research highlights 1,2-dimethyl-3-hexadecylimidazolium bromide exhibits thermotropic SmA2 phase behavior. The layer spacing in SmA2 phase displays linear temperature dependence. H1 phase forms in the mixtures of 1,2-dimethyl-3-hexadecylimidazolium bromide and water. In the H1 phase, the cylinder units with D about 4.970.04 nm nearly reach the most dense and highest-ordered columnar structure.328Prediction of thermodynamic, transport and vaporliquid equilibrium properties of binary mixtures of ethylene glycol and waterOriginal Research ArticleFluid Phas