Huntington disease–unaffected fetus diagnosed from maternal plasma using QF-PCR

The discovery of fetal DNA in maternal plasma from early pregnancies has led to new opportunities for clinical application. In the last few years there have been numerous reported applications, mainly fetal gender and RhD genotyping. The prenatal diagnosis of some inherited genetic diseases such as Huntington disease is also very frequently required in the prenatal diagnosis routine. We have successfully diagnosed, with a non-invasive procedure, an unaffected HD fetus at the 13th week of gestation using fetal DNA from maternal plasma and the quantitative fluorescent PCR method, which is one of the most sensitive ways to detect fetal DNA in maternal plasma at such an early time of gestation. Copyright © 2003 John Wiley & Sons, Ltd.     

环境水中的连续测定及环境保护

将水样经硝酸-高氯酸-盐酸消解后,用火焰原子吸收光谱连续测定其中铜、铁、锰、镉、镍的含量.方法简便,快速,实用.相对标准偏差为1.08%～3.10%加标回收率96%～105%     

Women and children last: An essay on sex discrimination in disasters

In general, little attention has been given to differential survival between the sexes in disasters. Consideration of physiological differences between males and females would suggest that, all things being equal, morbidity and mortality after disaster, particularly where food shortage is involved, should indicate an excess male mortality. Such statistics as exist in disasters, as in chronic underdevelopment, show that it is females and especially girl children who are at highest risk. The basis of this lies in sex discrimination which is implicit in most social systems.     

Progress of optical determination for phenolic compounds in sewage

ＰｒｏｇｒｅｓｏｆｏｐｔｉｃａｌｄｅｔｅｒｍｉｎａｔｉｏｎｆｏｒｐｈｅｎｏｌｉｃｃｏｍｐｏｕｎｄｓｉｎｓｅｗａｇｅＹｕａｎＣｕｎｇｕａｎｇＤｅｐａｒｔｍｅｎｔｏｆＣｈｅｍｉｃａｌＥｎｇｉｎｅｒｉｎｇ，ＵｎｉｖｅｒｓｉｔｙｏｆＰｅｔｒｏｌｅｕｍ，Ｓｈ...     

Determination of polycyclic aromatic hydrocarbonswith supercritical fluid extractionand chromatography (SFE/SFC )

Ｄｅｔｅｒｍｉｎａｔｉｏｎｏｆｐｏｌｙｃｙｃｌｉｃａｒｏｍａｔｉｃｈｙｄｒｏｃａｒｂｏｎｓｗｉｔｈｓｕｐｅｒｃｒｉｔｉｃａｌｆｌｕｉｄｅｘｔｒａｃｔｉｏｎａｎｄｃｈｒｏｍａｔｏｇｒａｐｈｙ（ＳＦＥ／ＳＦＣ）ＹａｏＷｅｉｘｉ（ＲｅｓｅａｒｃｈＣｅｎｔｅ...     

贵金属多元素分析进展

近年来,贵金属多元素精确分析在科研与工业界已引起广泛关注。本文就国内外贵金属分析常用的试样分解方法、分离富集方法与现代仪器分析技术进行总结和评述,并对未来发展的趋势进行了展望。     

气质联机法分析水中N,N-二甲基苯胺方法的研究

随着社会经济的发展,人们环境意识的提高,水中有机污染越来越受人们关注,目前国家尚没有N,N-二甲基苯胺的标准分析方法,但在工作中时常能遇到N,N-二甲基苯胺的监测分析.通过对采用气质联机法分析水中N,N-二甲基苯胺的方法的研究,希望能为国内环保监测工作提供一定的经验与技术.