Analysis of the Protein Electrophoresis Patterns of Curvularia Lunata in Maize and Immunological Detection of the Pathogenic Culture

Twelve isolates of Curvularia lunata and six related species from maize or other host plants are examined for the analysis of polyacrylamide gel electrophoresis (SDS-PAGE) patterns of their soluble proteins,Differences exist significantly among different species and the same species.There is a special protein band for Curvularia at relative mobility value 0.177(Rf 0.177) and a special protein band for C.lunata at Rf 0.225,Two kinds of rpimary antibodies to C.lunata are used to indirect ELISA and Avidin-Biotion-peroxidase Complex(ABC) immunoassay to evaluate their detecting sensitivity and specificity,The sensitivity of ABC immuno- assay is higher than indirect ELISA.APAbs to C.lunata is special to C.lunata.     

课件设计应提供知识的多种外部表征

本文对目前我国课件制作的现状作了分析，并基于建构主义学习环境的设计原则，提出课件应提供知识的多种外部表征的观点。     

论人的素质与社会发展的同步性

论文从社会形态发展史出发，说明人的素质是一个动态的社会历史范畴。人是主体性与受动性的统一，作为社会主体，高素质人才将是知识经济社会发展的决定性因素之一；人的受动性决定了其自身素质必须与社会历史的发展相同步。这在当今时代不仅具有客观必要性，又具有现实紧迫性。     

徐州金山桥开发区二期规划构思

探讨金山桥开发区二期开发的战略目标、产业目标、环境目标，提出其二期用地规划布局设想．     

含源电路欧姆定律的推广及其应用

本文用含源电路的欧姆定律概括了均匀电路的欧姆定律、全电路的欧定律和基尔霍夫第二定律;并将以上结果从稳恒电流电路中推广到了暂态过程和磁路中去,从而突出了“路”的共性及宏观基本规律。同时建立了对“路”统一、实用的符号规约。     

PIXE and INAA studies on ancient potteries from Guangfulin relics in Shanghai

This paper reports the study of ancient potteries unearthed from the Guangfulin site in Shanghai. From the external features of these potteries, archeologists can classify them into two different cultural types: Liangzhu culture (local culture) and a new culture which might be derived elsewhere, but they can not recognize whether they were produced in the same place. Proton induced X-ray emission (PIXE) and instrumental neutron activation analysis (INAA) were used to measure the chemical compositions of the samples and the results were analyzed using multivariate statistics. We found that the two methods can complement each other and their database can be mutually referenced in the study of ancient potteries. Experimental results show that the compositions of the potteries from the two cultural types are different, which means that the materials for ancient potteries of new culture originate from elsewhere. This supports the archaeologists’ speculation that a group of ancient people migrated to Shanghai from some other places 4000 years ago.     

裂纹研究的金相方法

本文结合作者的工作实践,论述了裂纹研究中的多种金相方法。通过光学显微镜(OM),扫描电子显微镜(SEM),透射电子显微镜(TEM)以及相应的若干特殊制样技术,可生动揭示金属材料的裂纹行为。     

TR/W电液伺服阀数学模型的辨识及其数字仿真

本文介绍用脉冲响应法辨识TR/W电液伺服阀的数学模型,并对辨识结果进行数字仿真。数字仿真曲线与实测的阶跃响应曲线相符。