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811.
E I Rogaev E Iu Syrokvasheva M G Pimenov T V Stegnova 《Sudebno-meditsinskaia ekspertiza》1992,35(1):10-14
Blood stains on a knife were identified by DNA genotyposcopy. The statistical validation method has confirmed that the blood stains on material evidence belonged to the victim, the probability of random coincidence being less than 10(-11). The efficacy of using hypervariable locus-specific DNA probes and the possibility of detecting DNA impressions in blood stains stored for more than 3 months have been demonstrated. 相似文献
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A simple and rapid method, for the isolation of eight triazine herbicides from human serum and urine, using Sep-Pak C18 cartridges is presented. After mixing with distilled water, serum and urine samples containing the herbicides, were loaded on Sep-Pak C18 cartridges and eluted with either chloroform only or chloroform/methanol (9:1). The herbicides were detected by capillary gas chromatography with both flame ionization detection (FID) and nitrogen-phosphorus detection (NPD). Separation of eight triazine herbicides from each other and from impurities was generally satisfactory with the use of a non-polar DB-1 capillary column. Recovery of most compounds was excellent for both chloroform and chloroform/methanol (9:1) as elution solvents. Backgrounds were cleaner and evaporation time was shorter for the chloroform only than for the chloroform/methanol (9:1). The NPD gave sensitivity more than 10-20 times higher than that of FID. 相似文献
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Valéry Ridde ? 《Development in Practice》2005,15(1):4-15
The reconstruction of the health system in Afghanistan is in its early stages, and donors have proposed Performance-based Partnership Agreements (PPAs) through which to subcontract the delivery of health services to private organisations, both for-profit and not-for-profit. Beyond ideological debates, this article sets out to explain the model underlying the PPA initiative and sheds light on empirical data concerning the assumed benefits of such an approach. The article studies privatisation and the contracting-out of health services, though there is as yet no information that can demonstrate the superiority of private over public service provision. Similarly, the merits of subcontracting have not been fully proven and such arrangements raise several ethical issues. Where PPAs are to be attempted, it is important to remain cautious and to ensure that operations are organised in such a way as to permit proper comparison. The paper concludes with recommendations to organisations involved in or considering the advantages of PPAs. 相似文献
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