美国是全球最大的经济体,占全球GDP的近1/4（24.3%）.GS1标准给美国的相关行业带来的促进,以及对整个美国经济社会产生的作用值得我国借鉴.美国是世界上最早研究和使用了条码技术的国家之一.1970年,美国食品工业委员会系统的研究了条码...美国是全球最大的经济体,占全球GDP的近1/4（24.3%）.GS1标准给美国的相关行业带来的促进,以及对整个美国经济社会产生的作用值得我国借鉴.美国是世界上最早研究和使用了条码技术的国家之一.1970年,美国食品工业委员会系统的研究了条码技术及商店自动销售管理系统（Point of Sale System,POS）的应用问题.展开更多
堆叠式封装单元的动态性能Packaging Technology and Science,2016年10期,29卷,491页—511页作者:Zhi-Wei Wang and Ke Fang【摘要】本文研究了约束、输入振动、位置和接触非线性对叠层包装单元动态性能的影响。在正弦扫描和随机振动得...堆叠式封装单元的动态性能Packaging Technology and Science,2016年10期,29卷,491页—511页作者:Zhi-Wei Wang and Ke Fang【摘要】本文研究了约束、输入振动、位置和接触非线性对叠层包装单元动态性能的影响。在正弦扫描和随机振动得到的产品的表面和加速度响应之间的动态接触力。当输入振动的高斯数据通过叠置式封装单元时,产生的动态接触力的非高斯数据,从而产生了一个力水平交叉的韦伯分布。展开更多
The objective of this work is to study a comprehensive performance of three types of structured parking in CO2 absorption application. One of them was developed in Mexican National Institute of Nuclear Research （ININ...The objective of this work is to study a comprehensive performance of three types of structured parking in CO2 absorption application. One of them was developed in Mexican National Institute of Nuclear Research （ININ abbreviation in Spanish of Instituto Nacional de lnvestigaciones Nucleates）, and the other two, Sulzer BX and Mellapak 250Y, by Sulzer Brothers Ltd. Aqueous solution of 30 weight % Monoethanolamine was employed as absorption solvent. The performance of the structured packing was evaluated in terms of the pressure drop, holds up, volumetric overall mass transfer coefficient and height of a global transfer unit of gas and liquid side as a function of the process operating parameters including gas and liquid load, by using hydrodynamic and mass transfer models. The pressure drop of ININ packing was higher than Sulzer BX and Mellapak 250Y, and volumetric overall mass transfer coefficient values are similar of Sulzer BX values and higher than Mellapak 250Y, although Sulzer BX and ININI 8 packing had less height of a global transfer unit of gas side values than Mellapak 250Y packing. The above-mentioned are consequences of the geometric characteristics and operational behavior for each packing.展开更多
文摘美国是全球最大的经济体,占全球GDP的近1/4（24.3%）.GS1标准给美国的相关行业带来的促进,以及对整个美国经济社会产生的作用值得我国借鉴.美国是世界上最早研究和使用了条码技术的国家之一.1970年,美国食品工业委员会系统的研究了条码技术及商店自动销售管理系统（Point of Sale System,POS）的应用问题.
文摘堆叠式封装单元的动态性能Packaging Technology and Science,2016年10期,29卷,491页—511页作者:Zhi-Wei Wang and Ke Fang【摘要】本文研究了约束、输入振动、位置和接触非线性对叠层包装单元动态性能的影响。在正弦扫描和随机振动得到的产品的表面和加速度响应之间的动态接触力。当输入振动的高斯数据通过叠置式封装单元时,产生的动态接触力的非高斯数据,从而产生了一个力水平交叉的韦伯分布。
文摘The objective of this work is to study a comprehensive performance of three types of structured parking in CO2 absorption application. One of them was developed in Mexican National Institute of Nuclear Research （ININ abbreviation in Spanish of Instituto Nacional de lnvestigaciones Nucleates）, and the other two, Sulzer BX and Mellapak 250Y, by Sulzer Brothers Ltd. Aqueous solution of 30 weight % Monoethanolamine was employed as absorption solvent. The performance of the structured packing was evaluated in terms of the pressure drop, holds up, volumetric overall mass transfer coefficient and height of a global transfer unit of gas and liquid side as a function of the process operating parameters including gas and liquid load, by using hydrodynamic and mass transfer models. The pressure drop of ININ packing was higher than Sulzer BX and Mellapak 250Y, and volumetric overall mass transfer coefficient values are similar of Sulzer BX values and higher than Mellapak 250Y, although Sulzer BX and ININI 8 packing had less height of a global transfer unit of gas side values than Mellapak 250Y packing. The above-mentioned are consequences of the geometric characteristics and operational behavior for each packing.
