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纳米气敏粉体的制备技术 总被引:4,自引:2,他引:4
气体敏感材料的纳米化是提高半导体气体传感器灵敏度的主要手段之一,通过控制材料的颗粒尺寸可控制材料的气体敏感程度。本文介绍了常见气敏材料的纳米化方法,技术与颗粒控制。 相似文献
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王群 《计算机工程与应用》2014,(2):21-24,57
分析了蜂巢形基底上纳米颗粒SEM图像的特征,阐明了纳米颗粒特征值提取所遇到的问题。借助形态学滤波、直方图均衡、颗粒分析等图像处理方法,解决了图像二值化处理后纳米颗粒图像上的大孔洞、粘连颗粒影响粒径提取等问题。给出了蜂巢形基底上纳米颗粒SEM图像处理算法,实现了占空比、粒径分布等纳米颗粒特征值提取的目标,为进一步对纳米器件的参数进行定量评价和改进奠定了基础。 相似文献
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功能化硅壳磁性纳米颗粒亲和吸附介质靶向分离蛋白质研究 总被引:1,自引:0,他引:1
基于溴化氰修饰方法在硅壳磁性纳米颗粒表面修饰功能性生物分子,获得功能化硅壳磁性纳米颗粒亲和吸附介质.以胰蛋白酶-胰蛋白酶抑制剂作为模式亲和对,基于酶和抑制剂之间的特异性结合原理,首先考察了胰蛋白酶抑制剂的修饰对硅壳磁性纳米颗粒粒径和电位的影响及其修饰效率,然后利用胰蛋白酶抑制剂修饰的硅壳磁性纳米颗粒亲和吸附介质对简单模型蛋白质混合溶液以及胰脏组织中的胰蛋白酶进行靶向分离.该研究基于硅壳磁性纳米颗粒的内核磁性及表面生物修饰,为蛋白质分离提供了一种新型亲和吸附介质. 相似文献
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This article describes the rationale for the multiphase creative problem solving process, and reports the findings from an empirical investigation conducted to facilitate the problem solving of managers. The ideational skills of the managers were assessed before and after training in a complete process of creative problem solving, along with their ideational attitudes, creative problem solving style (i.e., generator, conceptualizer, optimizer, or implementor), and evaluative skill (i.e., ability to recognize original ideas). The most important findings indicated that the training had a significant impact on the evaluative accuracy of the managers. They were significantly more accurate in their judgments about original ideas after training, both in their identification of original ideas and their recognition of unoriginal ideas. After training, the managers also gave more solutions and more original solutions to problems. Finally, several variables (e.g., the “preference for active divergence” attitude, and the conceptualizer process style) seemed to moderate the impact of training. Training was therefore effective, with specific effects that can be predicted from pre-training individual differences in attitudes and process style. 相似文献
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为提高高等院校的管理水平和决策水平,充分利用校园网资 源,开发了高等院校行政财政分析与决策系统。解决了诸如数据的动态查询、自动生成报表 、网络环境下数据共享等技术问题,具有网上数据共享、图形界面友好和安全的保密措施等 特点。 相似文献
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为发现我国国家标准与国外发达国家标准法规的差距,从根本上提高我国国家标准的总体质量,提升我国产品的质量安全水平,以关键指标(因子)为核心,研究国内外标准法规比对的工作流程,利用面向对象的方法设计,实现了国内外标准法规比对分析系统。该系统适用于所有产品国内外标准法规的比对工作。 相似文献
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Harshavardhana P. Jonckheere E. Silverman L. 《Automatic Control, IEEE Transactions on》1984,29(8):744-746
A new method of stochastic model reduction has recently been introduced by Desai et al. [1], [2]. The stability of the reduced order model has not previously, been considered. In this paper, we show that the stability of the reduced order model follows directly from the results of Pernebo and Silverman [3]. It is also shown that the reduced order model is minimal, in the controllability/observability sense. The relevance of this notion of minimality to stochastic minimality is made clear. 相似文献
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