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A 1H nuclear magnetic resonance (1H NMR) method for the determination of gamma-hydroxybutyric acid (GHB) and gamma-hydroxybutyrolactone (GBL) in human serum and urine using spiked samples has been developed. The method gives linear responses (correlation coefficients of 0.99 or greater) over the concentration range 0.01 mg/mL to 4.0 mg/mL in urine and 0.3 mg/mL to 2.0 mg/mL in serum. No sample pretreatment is required. Studies of the chemical interconversion of GBL and GHB showed hydrolysis of GBL to be rapid at pH 11.54, slower and less complete (30% hydrolysis) at pH 2.54 and slowest at pH 7.0, reaching 30% hydrolysis in about 40 days. No esterification of GHB was observed at any pH. 相似文献
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Anthony Charlesworth 《Liverpool Law Review》1999,21(2-3):131-147
This is the text of the Liverpool Law Review Annual Lecture 1999. Mr. Justice Hooper speaks about the need for a radical reform of the practices and procedures and rules of evidence in the
Criminal Courts in England and Wales. Radical reform is needed at all stages of the process including the investigation stage,
the pre-trial stage and at the trial itself. Substantive law reform is also long overdue and there is a real need to consider
a new approach by the adoption of a comprehensive criminal code.
This revised version was published online in August 2006 with corrections to the Cover Date. 相似文献
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Shirley S. Angrist Richard Mickelsen Anthony N. Penna 《Journal of youth and adolescence》1977,6(2):179-186
Studies of college freshmen find that men are more sexist in their attitudes than women. Does this hold also for high school students? This paper reports the relationship of (1) sex-role attitudes to selected school and family characteristics and (2) attitudes toward family life to sex-role conceptions for women and men. The study is based on 529 students in grades 9 to 12 attending four high schools. The findings show that males are more sexist than females and Blacks more so than Whites. Women who are bright, from upper class backgrounds, and whose mothers work are more equalitarian in sex-role conceptions. For men, family background is unimportant, but attending an elite public school seems to foster equalitarian sex-role conceptions. Men's sex-role attitudes are harder to explain than women's, and, unlike women, their role attitudes have little connection to their family orientation. 相似文献
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At a time when Americans are assessing their Constitution, thequestion of how the public views the federal system is important.This article examines questions relating to federalism and intergovernmentalrelations from public opinion polls in an effort to understandpublic attitudes. Different polling organizations asked differentquestions at different times, producing conflicting and oftenincomplete data. Nevertheless, the evidence indicates that Americansrecognize the intergovernmental nature of their system and believethat all their governments should share in the provision andfinancing of public programs and policies. Moreover, they wereselective in their choice of which government should bear theprincipal responsibility for certain functions. Although theywanted a more vigorous federal government and believed thatit gave them more for the dollar, Americans expressed strongsupport for the states. Their attitudes evidence support forthe federal arrangement, a preference for shared authority,and a climate conducive to cooperation. 相似文献
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