CdS/SiO2 nanowire arrays and CdS nanobelt synthesized by thermal evaporation

INTRODUCTION The richness of fundamental phenomena and the potential applications in nano-technologies has ar- oused rapidly growing interest in nano-dimensional materials. Quasi-one-dimensional (1D) nano-semi- conductors in the form of nanowires and nanoribbons have recently been successfully fabricated in many laboratories and by many methods (Wu et al., 2004; Yang et al., 2005; Gan et al., 2004; Soumitra et al., 2006). To synthesize CdS nanowires, people have developed a series of sy…     

《洛阳伽蓝记》里"寺、里"命名析

《洛阳伽蓝记》记载有41条里名、77条寺名。这些命名要受语言学客观规律约束,如音节限制和汉字选用,同时,从命名中可以分析出社会文化和精神风貌。现代命名行为中,命名者要有责任感、使命感。     

康熙帝早期中式肖像艺术观探析

康熙帝早期中式肖像艺术思想主导了宫廷肖像艺术活动,探究其早期肖像艺术观是深入研究康熙朝宫廷肖像艺术史的基础。 从文物和第一手文献史料出发,分析康熙帝早期中式肖像艺术观的内容、特点与影响。 首先,康熙帝的早期肖像艺术观以满族文化为本,通过宫廷肖像艺术传达巩固满族文化传统的信号。 第二,青年康熙帝借肖像艺术强化政治联姻、荣宠臣子、宣扬教化,以巩固其政治统治。 第三,康熙帝年轻时追求正面肖像构图的庄严感,喜欢写实性强的肖像画,支持宫廷肖像艺术风格多元化发展。 康熙帝的早期中式肖像艺术观包含文化、政治和审美意识,     

《工程制图》教学网站的应用研究

针对工程制图课程以图形为主的特殊性,本网站采用的ASP技术使生成动态交互式W eb网页的工作变得十分简单.特别是本网站采用的VRML提供的交互技术,克服了以往网页中应用的简单固定路径动画,实现实时人机交互动画,使产生的真实虚拟场景可以大大激发学生的学习兴趣.     

量子代数的表示

对Andersen的量子代数表示一文[1]中两个重要命题的证明和补充．     

The structural relationship between writing attitude and writing achievement in first and third grade students

This study tested three models of the structural relationship between the writing achievement of primary grade students and their attitude towards writing (defined here as an affective disposition involving how the act of writing makes the author feel, ranging from happy to unhappy). The three models tested were: (a) writing attitude influences writing achievement in a unidirectional manner, (b) writing achievement influences writing attitude in a unidirectional manner, and (c) the effects of writing attitude and achievement are bidirectional and reciprocal. The model that best fit the data was based on the assumption that writing attitude influences writing achievement. In addition, the direct path between attitude and achievement in this model was statistically significant. Although third grade students were better writers than first grade students, there was no statistical difference in younger and older students’ attitude towards writing. In addition, girls were more positive about writing than boys, but there was no statistical difference in their writing achievement related to gender. This research extends models based on the cognitive and language processes of writing to include the role of attitude, which is an affective component of motivation.     

星型网络中的混沌同步

Using an example,it was analytically proved that the dynamical systems constructed on a star coupled network is more easy to be synchronized than that in coupled map lattices(CML).The result shows that the synchronization in small-world networks may be realized more easily.     

社会学视角下对翻译机构的重解

按照布迪厄社会实践理论,翻译机构在其场域中带着惯习和各种资本进行权力的博弈,影响翻译实践。翻译机构场域与其他场域之间,以及翻译机构场域内部存在关联互动,以保持翻译机构场域自身的生机与活力,并推动翻译学科的建设与发展。     

Pressure drop in a packed bed with sintered ore particles as applied to sinter coolers with a novel vertically arranged design for waste heat recovery

The pressure drop over a packed bed with sintered ore particles was studied experimentally. The sintered ore particles were characterized to determine their equivalent particle diameter, bed voidage, and sphericity. The pressure drop experiments were performed on unsorted and sieved particles with various size distributions for a superficial velocity up to 2.4 m/s, covering flow regimes from laminar to turbulent. It was shown that the Ergun equation underestimates the pressure drop for such highly irregular-shaped particles by about 40%. The measured modified friction factor was well correlated to a scaled Ergun equation, which was verified to be valid for the modified particle Reynolds number up to 12 000 toward design and optimization of vertically arranged sinter coolers for waste heat recovery.     

抗日战争时期的国民党正面战场

抗日战争时期,中国共产党在全面抗战路线思想的指导下,领导中国人民在敌后开辟一系列抗日根据地,对打败日本侵略者起了决定性作用。国民党政府作为正面战场也为抗战的胜利作出了一定的贡献。