光电化学法处理水体中腐殖酸的初步研究

结合９０年代欧美学者提出了高级化学氧化过程（Ａｄｖａｎｃｅｄｃｈｅｍｉｃａｌｏｘｉｄａｔｉｏｎｐｒｏｃｅｓｓ，ＡＯＰ）原理，提出了并建立了一套光电化学联用的新用于处理难以生物降解的腐殖酸废水，实验表明，在通电１ｈ加光条件下（Ｉ＝０．２Ａ）总有碳（ＴＯＣ）去除率达到９０％，色度去除率达到９５％。     

灰色生长曲线与万元产值废水量预测

基于ＧＩＭ（１）灰色线性幂函数曲线，研究开发出ＧＰＭ（１）这一新的灰色生长曲线，并建立了ＧＰＭ（１）简捷的参数辨别方法。研究表明，ＧＰＭ（１）概念明确，结论可信，精度令人满意，比传统的皮尔生长曲线在应用上有着更大的优越性。为具有生长规律的非线性灰色环境系统的分析、预测和决策提供了新途径。     

废渣──Al(OH)_3凝胶再利用研究

研究了对处理铝材加工含Al3＋的酸性废液过程中产生的二次污染物Al（OH）3凝胶废渣的应用。含水分约90％、80％左右的Al（OH）3凝胶200g分别与14～16mL、22～24mL95％的工业浓硫酸酸反应，可制得浓度为20％～23％的Al（SO4）3溶液，经稀释可用作造纸原料。     

饮用水中五种有机磷农药的快速检测法

本文介绍了使用Ｗａｔｅｒｓ ＯＡＳＩＳ－ＨＬＢ固相萃取小柱从水中分离富集敌百虫、敌敌畏、乐果、甲基对硫磷，对硫磷五种有机磷农药的快速检测法。     

The association between alpha-fetoprotein and βhcg levels prior to and following chorionic villus sampling in cases that spontaneously miscarried

Maternal serum alpha-fetoprotein (AFP) and beta-human chorionic gonadotropin (βhCG) measurements taken prior to chorionic villus sampling (CVS) in 21 patients who subsequently miscarried were compared with measurements in a control group of 113 patients with uneventful pregnancies. Patients with AFP levels of 10 iu/ml or more prior to the CVS had a 4·3 times greater risk of miscarriage (95 per cent confidence interval 1·3–13·6). AFP levels obtained 1 week after the CVS in the 13 patients with late miscarriages were higher than in the control group (P = 0·06). Patients miscarrying had a greater rise in AFP (P = 0·06) and a greater fall in βhCG levels (P = 0·04) following the CVS procedure, compared with the control subjects. Each 10-unit change in the difference between AFP or βhCG levels prior to and 1 week following the CVS was associated with a significantly increased risk for late miscarriage. Elevated maternal serum AFP levels early in pregnancy and changes in AFP and βhCG levels following CVS may predict an increased risk for subsequent miscarriage.     

Use of the chemical cleavage of mismatch method for prenatal deficiency diagnosis of alpha-1-antitrypsin

The most common mutation in alpha-1-antitrypsin deficiency, conversion of a G to an A at base 9989 (PI-Z), was detected with the chemical cleavage of mismatch method, demonstrating the power of the method for prenatal diagnosis. Exon V of the gene was amplified using the polymerase chain reaction and heteroduplexes were formed to test for the presence of the mutation. The predicted C mismatch was readily detectable with hydroxylamine, and by making the probe from the chorionic villus sample it was possible to determine that the fetus was heterozygous, not homozygous, for the mutation.     

45,X/46,XY chromosome mosaicism detected by midtrimester amniocentesis in amniocyte clones

Amniocyte clones from a mid-trimester pregnancy disclosed 45,X/46,XY sex chromosome mosaicism. Because of the uncertainty concerning the phenotype of the fetus, the parents elected to terminate the pregnancy. Mixed (asymmetrical) gonadal dysgenesis was not found. The fetus appeared to have a normal male uro-genital system. No malformations of any type were detected, although as expected, the fetus did have 45,X/46,XY mosaicism.     

MFC在UG二次开发CAD系统中的应用

针对UG开发中的困难,目前还没有在UG/OPENAPI中调用MicrosoftFundamentClass(MFC)的方法,着重介绍了如何应用MFC开发UG的方法以及辅助开发模块UG/Open MenuScript的使用。并用一个完整的例子来说明如何利用UG/OPENAPI,MFC,及MenuScript进行联合开发CAD系统。     

熔池高度对双辊薄带凝固组织影响的模拟预测

在已建立的理论数学模型的基础上,以1Cr18Ni9Ti不锈钢为研究对象,模拟预测了薄带厚度保持不变条件下熔池高度对薄带凝固组织的影响。研究结果表明:随着熔池高度增加,1Cr18Ni9Ti不锈钢双辊薄带凝固组织中柱状晶区比例首先增大,然后又逐渐减小。而柱状枝晶取向度和枝晶间距则随着熔池高度的增加而增大,但在较低的熔池高度条件下,柱状枝晶间距在凝固结束时有突然增大的趋势。     

假单胞菌的氯儿茶酚1,2-双加氧酶基因的克隆和表达

 从土壤中分离得到1株降解2,4-二氯酚(2,4-DCP)能力较强的细菌菌株GT241-1,克隆了该菌株的3,5-二氯儿茶酚1,2-双加氧酶基因(dcpB),采用的克隆策略为:用Southern杂交对dcpB进行定位后,构建重组质粒,再用斑点杂交从重组质粒中筛选目的转化子.经序列测定得知dcpB亚克隆片段全长4303bp,其中dcpB基因编码区765bp.核苷酸和推测的氨基酸序列分析表明,dcpB与已在GenBank登记的相关基因有一定的差异.dcpB基因能够在大肠杆菌转化子中成功地表达有生物活性的酶.