本文报道了SOI(Semiconductor On Insulator)材料的场助键合技术,其中包括Si/SiO_2-SiO_2/Si,Si-石英,GaAs-玻璃等的键合。利用各种检测手段对键合材料的键合面积、键合强度、界面形貌及电学特性进行了测试。文中还讨论了场助键合机理...本文报道了SOI(Semiconductor On Insulator)材料的场助键合技术,其中包括Si/SiO_2-SiO_2/Si,Si-石英,GaAs-玻璃等的键合。利用各种检测手段对键合材料的键合面积、键合强度、界面形貌及电学特性进行了测试。文中还讨论了场助键合机理、等离子体表面处理方法及场助键合材料的应用实例。展开更多
本文报道了SOI(Semiconductor On Insulator)材料的场助键合技术,其中包括SiO_2—SiO)2、Si-SiO_2、Si—石英、GaAS—玻璃等的键合.利用各种检测手段对键合材料的键合面积、键合强度、界面形貌及电学特性进行了测试,文中还讨论了场助键...本文报道了SOI(Semiconductor On Insulator)材料的场助键合技术,其中包括SiO_2—SiO)2、Si-SiO_2、Si—石英、GaAS—玻璃等的键合.利用各种检测手段对键合材料的键合面积、键合强度、界面形貌及电学特性进行了测试,文中还讨论了场助键合机理、等离子体表面处理方法及场助键合村料的应用实例.结果表明,场助键合技术是一种有很大潜力的技术.展开更多
The necessity and feasibility of an expert system for carbide-tool utilization are analyzed and a practical system named CUES(carbide-tool utilization expert system ) is developed and realized. The system concept, mod...The necessity and feasibility of an expert system for carbide-tool utilization are analyzed and a practical system named CUES(carbide-tool utilization expert system ) is developed and realized. The system concept, module structure, data management, inference strategy and the interface design of the system are discussed in.detail. The system would be useful not only for the preparation of tool bank of FMS or CIMS, but the for the proper application of cemented carbide tools in conventional machining Processes.展开更多
Environmental pollution and energy deficiency represent major problems for the sustainability of the modern world. Photocatalysis has recently emerged as an effective and environmentally friendly technique to address ...Environmental pollution and energy deficiency represent major problems for the sustainability of the modern world. Photocatalysis has recently emerged as an effective and environmentally friendly technique to address some of these sustainability issues,although the key to the success of this approach is dependent on the photocatalysts themselves. Based on their attractive physic chemical properties,including their ultrahigh surface areas,homogeneous active sites and tunable functionality,metal-organic frameworks（MOFs） have become interesting platforms for the development of solar energy conversion devices. Furthermore,MOFs have recently been used in a wide variety of applications,including heterogeneous photocatalysis for pollutant degradation,organic transformations,hydrogen production and CO2 reduction. In this review,we have highlighted recent progress towards the application of MOFs in all of these areas. We have collected numerous reported examples of the use of MOFs in these areas,as well as providing some analysis of the key factors influencing the efficiency of these systems. Moreover,we have provided a detailed discussion of new strategies that have been developed for enhancing the photocatalytic activity of MOFs. Finally,we have provided an outlook for this area in terms of the future challenges and potential prospects for MOFs in photocatalysis.展开更多
This paper puts forword 11 cartographic generalization operator models and introduces their mathematical definitions,and thus a precise mathematical form and quantitative description has been given to these formerly l...This paper puts forword 11 cartographic generalization operator models and introduces their mathematical definitions,and thus a precise mathematical form and quantitative description has been given to these formerly limited qualitative concepts.The meaning of mathematical definition of operators for cartographic generalization and the application prospect in computer_aided cartography (CAC) is stated.ract The Jurassic strata in Jingyan of Sichuan containing the Mamenchinsaurus fauna are dealt with and divided in this paper. The Mamenchisaurus fossils contained there are compared in morphological features and stratigraphically with other types of the genus on by one. The comprehensive analysis show that the Mamenchisaurus fauna of Jingyan appeared in the early Late Jurassic and is primitive in morphology. The results of the morphological identification and stratigraphical study agree with each other. Their evolutionary processes in different apoches of the Late Jurassic also made clear. Key words Jingyan, Sichuan, Mamenchisaurus Fauna, stratigraphy, evolution展开更多
文摘本文报道了SOI(Semiconductor On Insulator)材料的场助键合技术,其中包括Si/SiO_2-SiO_2/Si,Si-石英,GaAs-玻璃等的键合。利用各种检测手段对键合材料的键合面积、键合强度、界面形貌及电学特性进行了测试。文中还讨论了场助键合机理、等离子体表面处理方法及场助键合材料的应用实例。
文摘本文报道了SOI(Semiconductor On Insulator)材料的场助键合技术,其中包括SiO_2—SiO)2、Si-SiO_2、Si—石英、GaAS—玻璃等的键合.利用各种检测手段对键合材料的键合面积、键合强度、界面形貌及电学特性进行了测试,文中还讨论了场助键合机理、等离子体表面处理方法及场助键合村料的应用实例.结果表明,场助键合技术是一种有很大潜力的技术.
文摘The necessity and feasibility of an expert system for carbide-tool utilization are analyzed and a practical system named CUES(carbide-tool utilization expert system ) is developed and realized. The system concept, module structure, data management, inference strategy and the interface design of the system are discussed in.detail. The system would be useful not only for the preparation of tool bank of FMS or CIMS, but the for the proper application of cemented carbide tools in conventional machining Processes.
基金supported by the National Natural Science Foundation of China(2127303621177024)+1 种基金the National Basic Research Program of China(973 Program2014CB239303)~~
文摘Environmental pollution and energy deficiency represent major problems for the sustainability of the modern world. Photocatalysis has recently emerged as an effective and environmentally friendly technique to address some of these sustainability issues,although the key to the success of this approach is dependent on the photocatalysts themselves. Based on their attractive physic chemical properties,including their ultrahigh surface areas,homogeneous active sites and tunable functionality,metal-organic frameworks（MOFs） have become interesting platforms for the development of solar energy conversion devices. Furthermore,MOFs have recently been used in a wide variety of applications,including heterogeneous photocatalysis for pollutant degradation,organic transformations,hydrogen production and CO2 reduction. In this review,we have highlighted recent progress towards the application of MOFs in all of these areas. We have collected numerous reported examples of the use of MOFs in these areas,as well as providing some analysis of the key factors influencing the efficiency of these systems. Moreover,we have provided a detailed discussion of new strategies that have been developed for enhancing the photocatalytic activity of MOFs. Finally,we have provided an outlook for this area in terms of the future challenges and potential prospects for MOFs in photocatalysis.
文摘This paper puts forword 11 cartographic generalization operator models and introduces their mathematical definitions,and thus a precise mathematical form and quantitative description has been given to these formerly limited qualitative concepts.The meaning of mathematical definition of operators for cartographic generalization and the application prospect in computer_aided cartography (CAC) is stated.ract The Jurassic strata in Jingyan of Sichuan containing the Mamenchinsaurus fauna are dealt with and divided in this paper. The Mamenchisaurus fossils contained there are compared in morphological features and stratigraphically with other types of the genus on by one. The comprehensive analysis show that the Mamenchisaurus fauna of Jingyan appeared in the early Late Jurassic and is primitive in morphology. The results of the morphological identification and stratigraphical study agree with each other. Their evolutionary processes in different apoches of the Late Jurassic also made clear. Key words Jingyan, Sichuan, Mamenchisaurus Fauna, stratigraphy, evolution
