为了在包装设计当中充分发挥 3D 虚拟技术的作用,提高包装设计效率、质量等,本文将展开相关研究.研究主要对3D 虚拟技术的基本概念与特性、特点进行了介绍,然后分析了包装设计中 3D 虚拟技术的应用优势,最终提出包装设计中3D 虚拟技术...为了在包装设计当中充分发挥 3D 虚拟技术的作用,提高包装设计效率、质量等,本文将展开相关研究.研究主要对3D 虚拟技术的基本概念与特性、特点进行了介绍,然后分析了包装设计中 3D 虚拟技术的应用优势,最终提出包装设计中3D 虚拟技术的应用路径与注意事项.通过本文分析,3D 虚拟技术将彻底改变包装设计的工作模式,新模式有利于包装设计效率、质量提升,间接使得包装设计作用也得以充分发挥.展开更多
N-ros is one of the transforming genes in human hepatic cancer cells. It has been found that N-ras was overexpressed at the mENA and protein level in hepatoma cells. In order to explore the biological roles of N-ras i...N-ros is one of the transforming genes in human hepatic cancer cells. It has been found that N-ras was overexpressed at the mENA and protein level in hepatoma cells. In order to explore the biological roles of N-ras in human hepatic oaroinogenesis and the potential application in control of cancer cell growth, a pseudotype retrovirus containing antisense sequence of human N-ras was constructed and packaged. A recombinant rebrovirus vector containing antisense or sense sequences of N-ras oDNA was constructed by pZIP-NeoSV(X)1. The pseudotype virus was packaged and rescued by transfeotion and infection in PA317 and ψ2 helper cells. It has been demonstrated that the pseudotype retrovirus containing antisense N-ras sequence did inhibit the growth of human PLC/PEF/5 hepatoma cells accompanied with inhibition of p21 expression, while the retrovirus containing sense sequence had none. The pseudotype virus had no effect on human diploid fibroblasts.展开更多
Modem packing technology is presented in terms of correlations and criteria for an extensive evaluation of up-to-date packing design used in current mass transfer operations. The corresponding basic information covers...Modem packing technology is presented in terms of correlations and criteria for an extensive evaluation of up-to-date packing design used in current mass transfer operations. The corresponding basic information covers the process engineering aspects, e.g. volumetric effectiveness and optimum geometry of the packing, and the techno-economic aspects, e.g. when selecting a packing adopted in practice for a certain application task. The correlations required for this investigation are derived and evaluated on the basis of a comprehensive experimental re- search by testing and comparison of modem packings, such as Raschig Super-Rings and reference packings. The results thus obtained are correlated and presented in graphic presentation of diagrams, figures and tables.展开更多
文摘为了在包装设计当中充分发挥 3D 虚拟技术的作用,提高包装设计效率、质量等,本文将展开相关研究.研究主要对3D 虚拟技术的基本概念与特性、特点进行了介绍,然后分析了包装设计中 3D 虚拟技术的应用优势,最终提出包装设计中3D 虚拟技术的应用路径与注意事项.通过本文分析,3D 虚拟技术将彻底改变包装设计的工作模式,新模式有利于包装设计效率、质量提升,间接使得包装设计作用也得以充分发挥.
文摘N-ros is one of the transforming genes in human hepatic cancer cells. It has been found that N-ras was overexpressed at the mENA and protein level in hepatoma cells. In order to explore the biological roles of N-ras in human hepatic oaroinogenesis and the potential application in control of cancer cell growth, a pseudotype retrovirus containing antisense sequence of human N-ras was constructed and packaged. A recombinant rebrovirus vector containing antisense or sense sequences of N-ras oDNA was constructed by pZIP-NeoSV(X)1. The pseudotype virus was packaged and rescued by transfeotion and infection in PA317 and ψ2 helper cells. It has been demonstrated that the pseudotype retrovirus containing antisense N-ras sequence did inhibit the growth of human PLC/PEF/5 hepatoma cells accompanied with inhibition of p21 expression, while the retrovirus containing sense sequence had none. The pseudotype virus had no effect on human diploid fibroblasts.
文摘Modem packing technology is presented in terms of correlations and criteria for an extensive evaluation of up-to-date packing design used in current mass transfer operations. The corresponding basic information covers the process engineering aspects, e.g. volumetric effectiveness and optimum geometry of the packing, and the techno-economic aspects, e.g. when selecting a packing adopted in practice for a certain application task. The correlations required for this investigation are derived and evaluated on the basis of a comprehensive experimental re- search by testing and comparison of modem packings, such as Raschig Super-Rings and reference packings. The results thus obtained are correlated and presented in graphic presentation of diagrams, figures and tables.
