4，5-二溴苯基荧光酮分光光度法测定有机锗口服液中锗

在5．3mol·L－1的H2SO4介质中．锗与4．5-二溴苯基荧光酮，十二烷基硫酸钠生成三元配合物。其λmax为509nm，表观摩尔吸光率为1．77×105L·mol-1·cm-1．锗量在0～7μg／25mL遵守比耳定律。显色反应具高选择性，各种低价和高价金属离子均不干扰测定。测定了有机锗口服液中微量锗。     

钙和青霉素对老化棉花种子幼苗生长的影响

研究了Ca2+和青霉素处理液对老化棉花种子幼苗生长的影响.结果表明0.03%的青霉素和0.07%的Ca2+能显著提高其过氧化物酶(POD)活性、幼苗长度、幼苗根系活力,但对幼苗叶片中叶绿素含量的影响不显著.     

The madelung constant of the sodium chloride crystal lattice

An analysis of the Madelung constant of the sodium chloride crystal lattice has been made, in an effort to supplement information available in undergraduate textbooks. A method of approximation of the constant using the personal computer is presented. An erratum to this article is available at .     

SiO2负载纳米级SO42-/TiO2固体超强酸的制备及其催化合成乙酸丁酯的研究

制备了SiO2负载纳米级SO4^2-/TiO2固体超强酸，对其催化活性、重复使用效果、失活原因及再生方法进行了研究。     

有机物料施用量对土壤CO_2排放速率的影响

本试验选用有机碳含量不同的黑土,研究了有机物料施用量对土壤CO2排放速率的影响.研究表明,施用有机物料以后CO2排放速率明显增加,5%和3%处理CO2排放速率增加幅度显著高于2%和1%处理.有机碳分解初期CO2排放速率增加较快,波动性大,后期趋于稳定,其相对值大小随有机物料施用量及土壤有机碳含量增加而增加,即6号土>5号土>4号土>1号土.3号土性质与其它土壤样品略有不同,CO2排放速率偏高.     

河北大学后勤集团饮食管理系统的设计与实现

本文阐述了为提高河北大学后勤集团饮食管理的质量所开发的饮食管理系统的设计与实现。     

Effects of decentralization on school resources

Sweden has undertaken major national reforms of its school sector, which, consequently, has been classified as one of the most decentralized ones in the OECD. This paper investigates whether local tax base, grants, and preferences affected local school resources differently as decentralization took place. We find that municipal tax base affects per pupil spending in the same way regardless of whether the school sector is centralized or decentralized, but has a smaller effect on teacher–pupil ratio after the reforms. The less-targeted grants are the fewer teachers per pupil do the municipalities employ. The results for local preferences are less clear-cut.     

Efficiency,technology and productivity change in Australian universities, 1998–2003

In this study, productivity growth in 35 Australian universities is investigated using non-parametric frontier techniques over the period 1998–2003. The five inputs included in the analysis are full-time equivalent academic and non-academic staff, non-labour expenditure and undergraduate and postgraduate student load while the six outputs are undergraduate, postgraduate and Ph.D. completions, national competitive and industry grants and publications. Using Malmquist indices, productivity growth is decomposed into technical efficiency and technological change. The results indicate that annual productivity growth averaged 3.3% across all universities, with a range from −1.8% to 13.0%, and was largely attributable to technological progress. However, separate analyses of research-only and teaching-only productivity indicate that most of this gain was attributable to improvements in research-only productivity associated with pure technical and some scale efficiency improvements. While teaching-only productivity also contributed, the largest source of gain in that instance was technological progress offset by a slight fall in technical efficiency.     

关于探究性考试方法的改革尝试

根据“数字信号处理”课程理论抽象、应用复杂等特点,提出“数字信号处理”研究性课程建设的基本思路,主要介绍关于考试方法方面的改革做法,即笔试、上机考试、探究式学习课外作业加平时综合评定的考试方式——“6：2：2”考试模式。     

C.-R.方程的推广及其应用

利用多元函数方向导数的概念与矩阵变换等方法推广了C.-R.方程,给出了解析函数f（z）=u（x,y）＋iv（x,y）的实部与虚部关于任意两个方向v1,v2的方向导数（偏du/偏dv1,偏dv/偏dv1）与（偏du/偏dv2,偏dv/偏dv2）之间的关系.利用所得结果对复变函数可微的一个充要条件做了改进.相应的结论对解析函数也成立.