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941.
942.
Olds WJ Jaatinen E Fredericks P Cletus B Panayiotou H Izake EL 《Forensic science international》2011,212(1-3):69-77
Spatially offset Raman spectroscopy (SORS) is a powerful new technique for the non-invasive detection and identification of concealed substances and drugs. Here, we demonstrate the SORS technique in several scenarios that are relevant to customs screening, postal screening, drug detection and forensics applications. The examples include analysis of a multi-layered postal package to identify a concealed substance; identification of an antibiotic capsule inside its plastic blister pack; analysis of an envelope containing a powder; and identification of a drug dissolved in a clear solvent, contained in a non-transparent plastic bottle. As well as providing practical examples of SORS, the results highlight several considerations regarding the use of SORS in the field, including the advantages of different analysis geometries and the ability to tailor instrument parameters and optics to suit different types of packages and samples. We also discuss the features and benefits of SORS in relation to existing Raman techniques, including confocal microscopy, wide area illumination and the conventional backscattered Raman spectroscopy. The results will contribute to the recognition of SORS as a promising method for the rapid, chemically specific analysis and detection of drugs and pharmaceuticals. 相似文献
943.
Population genetics for Y-chromosomal STRs haplotypes of Chinese Tibetan ethnic minority group in Tibet 总被引:5,自引:0,他引:5
Zhu B Liu S Ci D Huang J Wang Y Chen L Zhu J Xu Y Zhao Q Li S Liu Y 《Forensic science international》2006,161(1):78-83
Y-chromosomal STRs loci were analyzed from a sample of 119 healthy unrelated autochthonous male individuals of Chinese Tibetan ethnic minority group using a multiplex PCR system. Allele and haplotype frequencies for DYS19, DYS389 I, DYS389 II, DYS390, DYS391, DYS392, DYS393, DYS385a,b, DYS438, and DYS439 were determined by the Y-PLEXtrade mark 12 kit. The gene diversity values for the Y-STRs loci ranged from 0.3347 (DYS438) to 0.9547 (DYS385a,b). A total of 110 haplotypes were identified in the Y-STR loci, among which 104 were unique, while six occurred more than once. The overall haplotype diversity for the Y-STRs loci was 0.9981, and the discrimination capacity was 0.9897. The results in the present study can be used for routine forensic application in the region, and enrich Chinese ethnical genetic informational resources. 相似文献
944.
945.
Soares-Vieira JA Billerbeck AE Pinto EM Iwamura ES Bilharinho de Mendonça B Otto PA 《The American journal of forensic medicine and pathology》2002,23(2):186-190
Gene and genotype frequencies in relation to the D3S1358, vWA, FGA, TH01, TPOX, CSF1PO, D5S818, D13S317, and D7S820 loci were determined in a sample of 290 unrelated individuals (204 Caucasians and 86 mulattoes) living in the city of S?o Paulo, Brazil. The sex test Amelogenin was also performed in all subjects from our sample, revealing the expected sex in all instances. Allele frequency data obtained from the analysis of these samples were in the usual range of other population groups with similar racial background. In the sample of Caucasian individuals, panmictic proportions were ruled out in relation to TPOX and CSF1PO loci, but only in the latter was the overall frequency of heterozygotes significantly less than expected. In the sample of mulattoes, Hardy-Weinberg proportions were rejected in relation to FGA and CSF1PO loci, but in no instance were the overall numbers of heterozygotes different from the corresponding expected ones under panmixia. Taking into account all this and also the number of tests performed, the degree of genetic heterogeneity of Brazilian populations, and the critical level reached by the significant results (1% < alpha<5%), the departures from panmixia here observed can be considered to be negligible in altering significantly biologic relationship odds calculated under the assumption of random matings. 相似文献
946.
Kingsbury B 《Columbia journal of law and social problems》2004,38(2):201-250
When life-sustaining hydration and nutrition is withheld from an incompetent and immobile patient like Terri Schiavo, death comes to the patient by dehydration within about two weeks. Americans should be permitted to arrange for euthanasia at that point, as opposed to merely dehydrating to death, and should be able to incorporate their desire for euthanasia into an advance directive. A state constitutional right of privacy could provide the legal avenue permitting effectuation of such a choice. 相似文献
947.
拉美决策者长期以来面临着以下争论:1.通货膨胀政策。拉美的通货膨胀率始终高于世界其他地区。在制定反通货膨胀政策的过程中,决策者面临着两种选择:正统的金融控制或非正统的休克疗法。有效的政策应该是合二为一。2.财政政策。这方面争论的核心是:利率应保持在什么水平上。换言之,实际利率(即名义利率减去通货膨胀率)应该是正还是负?低利率能鼓励投资,从而促进经济增长; 相似文献
948.
东南亚国家的经济成绩尽管原有的社会主义集团已经发生了变化,但是在东南亚地区仍然能够从市场导向型经济地区(包括东盟国家、即:文莱、印度尼西亚、马来西亚、菲律宾、新加坡和泰国)区分出非市场经济地区,即:缅甸、柬埔寨老挝、越南。第一表列示自1981年以来东南亚各国的经济增长率。 相似文献
950.