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球铁、45钢及40Cr基体镀铁工艺最佳活化规范的研究 被引量:1
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作者 张兆国 刘宏新 徐德武 《农业工程学报》 EI CAS CSCD 北大核心 2000年第2期89-92,共4页
在其他条件一定的情况下 ,采用二次旋转正交组合试验设计方法 ,以活化电流密度、活化时间为因素开展试验 ,探索球墨铸铁、45钢及 40 Cr最佳活化规范。通过研究分析了活化电流密度及活化时间对结合强度的影响规律 ,指出 3种材质最佳活化... 在其他条件一定的情况下 ,采用二次旋转正交组合试验设计方法 ,以活化电流密度、活化时间为因素开展试验 ,探索球墨铸铁、45钢及 40 Cr最佳活化规范。通过研究分析了活化电流密度及活化时间对结合强度的影响规律 ,指出 3种材质最佳活化规范差异 ,并在金相。 展开更多
关键词 球铁 45钢 40Cr 活化规范 镀铁工艺 活化机理
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45钢镀铁工艺最佳活化规范的研究 被引量:1
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作者 张兆国 徐德武 杨晓丽 《农机化研究》 北大核心 1999年第2期81-83,共3页
在其他条件一定的情况下,以活化电流密度、活化时间为因素开展试验,探索45号钢最佳活化规范。通过研究分析了活化电流密度及活化时间对结合强度的影响规律,指出45钢最佳活化规范.
关键词 45钢 镀铁 活化规范 工艺 电镀
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Scientific Initiation: Meanings and Peculiarities of Public Policy in Brazil
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作者 Marilene Batista da Cruz Nascimento Marilia Costa Morosini Josevania Teixeira Guedes 《Sociology Study》 2014年第8期700-707,共8页
This paper aims to analyze the Scientific Initiation (SI) as public policy of higher education in Brazil, from meanings and peculiarities of this device in the undergraduate academic's formation, created jointly wi... This paper aims to analyze the Scientific Initiation (SI) as public policy of higher education in Brazil, from meanings and peculiarities of this device in the undergraduate academic's formation, created jointly with the National Research Council in 1951 currently National Council for Scientific and Technological Development (CNPq). This corporation emerged from the recognition of the strategic importance of science and necessity of institutionalization of encouragement and fostering research. This is a theoretical bibliographical study and documentary that evidences the contributions and limits of SI while political science training should be part of academic activities to provide the development and support of investigative spirit. The concept of SI was established in universities as an activity to be developed in order to encourage the student to become familiar with scientific practices. The study concluded that SI is based on institutionalized norms within higher education to foster the development of science, and it is considered as an important strategy of expansion of graduate studies in Brazil. 展开更多
关键词 Public policy Scientific Initiation (SI) higher education
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Globalization and Education for All: The Challenge of the Twenty-First Century
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作者 Jani Soga 《Sociology Study》 2013年第6期437-442,共6页
Recently more and more people talk about "globalization" with loads of semasiological variety: mainly economic but also cultural. Many perceive it as a significant progress, others as an undisputed threat. However,... Recently more and more people talk about "globalization" with loads of semasiological variety: mainly economic but also cultural. Many perceive it as a significant progress, others as an undisputed threat. However, despite the euphoria that faces this phenomenon, globalization is an evolving process. The fact remains that this is a progressive development of economic, scientific, political, and cultural aspects of all peoples of planet Earth turning it into a big city with many differences, in particular in education and educational activities. This paper will try to illuminate fundamental issues as: (1} understanding the notion of globalization in relation to both pedagogical principles in the field: the integrity and completeness; (2) elements of globalization, as a necessary process and development factor; and (3) "education for all" challenges for the twenty-first century. The content of global education in the scientific publication is given analytical processing, linking globalization in education with the development of democracy and human rights, global ethics, the influence of European norms, standards and the global world, the impact of European and world norms and standards, as well as the penetration of global civic cultural elements. 展开更多
关键词 PROCESS DEMOCRACY GLOBALIZATION EDUCATION economy and culture
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