杂散光影响与最佳相衬板设计

本文首先介绍了不考虑杂散光条件下的相衬板设计方法.在此基础上,分析了杂散光的影响,给出了相板最佳参数与杂散光之间的关系,提出相板设计的建议.     

用剪接板实现自动数据交换

本文讨论了一种通过剪接板在Ｗｉｎｄｏｗｓ多任务之间实现数据自动交换的方法。     

大型水轮机中矩形加筋开孔板的弯曲问题

本文采用一般组合结构的加权残数法研究矩形加筋开孔板的弯 曲问题.首先,将矩形加筋开孔板分成若干个板块和梁段的组合,并分域选用板方程的齐解与三角函数来构成试函数;其次,利用协调条件进行边界配点和协调配点,再依据最小二乘法使问题得到圆满解决.     

水泥砼路面断板的成因、预防与处理

通过对水泥砼路面断板的成因分析,提出一些预防措施及产生断板后的处理方法,以在使用过程中积极采取预防措施,及时进行病害处理,保证车辆正常行驶。     

Application of triple potential step amperometry method for quantitative electroanalysis

A novel quantitative electroanalysis method, triple potential step amperometry (TPSA), was developed and explained with an example of nitrobenzene analyzing in water. The selectivity of TPSA was im- proved by controlling the potential step within a narrow interval and using enzyme-modified electrode, the narrow potential step makes the method avoid most interferents, and enzyme-modified electrode can enhance the response of target substance selectively. The peak area was investigated for quanti- tative calibration, such as nitrobenzene concentration showing a linear relation with the peak area, with the correlation coefficients being 0.9995. The t-test and F-test were applied to evaluating the reliability of TPSA, the results showed that there was no evidence of systematic error for TPSA, and the method was of no significant difference from CV. The merit of fast detecting and few potential changing times make the TPSA suitably applicable to low-cost automatic monitoring equipments.     

预应力混凝土空心板裂缝分析与防治

宁淮高速公路一合同段空心板预制施工中出现了预应力混凝土空心板竖向裂缝的现象,技术人员进行了调查分析,找出了裂缝产生的原因,提出了改进措施,有效地防止了混凝土表面裂缝的再次发生.