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61.
Concheiro M Simões SM Quintela O de Castro A Dias MJ Cruz A López-Rivadulla M 《Forensic science international》2007,171(1):44-51
A fast method was designed for the simultaneous determination of amphetamine (A), methamphetamine (MA), PMA, MDA, MDMA, MDEA and MBDB in urine. The drugs were analysed by LC (ESI)-MS/MS, after a simple liquid-liquid extraction in the presence of the deuterated analogues. Reverse phase separation on an Atlantis dC18 Intelligent Speed column was achieved in less than 4 min under gradient conditions, and the total run time was 8 min. The method was fully validated, including linearity (1-1000 ng/mL for A, MDMA, MDEA and MBDB; 2-1000 ng/mL for MDA and PMA; 1-200 ng/mL for MA; r2>0.99 for all compounds), recovery (>80%), within-day and between-day precision and accuracy (CV and MRE<12.7% for intermediate level and ULOQ, and <17.2% for LLOQ), limit of detection (0.2 ng/mL for MDMA, MDEA and MBDB; 0.5 ng/mL for A, MA and PMA; 1 ng/mL for MDA) and quantitation (1 ng/mL for A, MA, MDMA, MDEA and MBDB; 2 ng/mL for MDA and PMA) and relative ion intensities. No matrix effect was observed. The procedure proved to be sensitive, specific and rapid, and was applied to real forensic cases. 相似文献
62.
Haplotype and allele frequencies of the nine Y-STR (DYS19, DYS389 I, DYS389 II, DYS390, DYS391, DYS392, DYS393, DYS385 I/II) were determined in a population sample of 200 unrelated males from Belém, Brazil. The most common haplotypes are shared by 1.5% of the sample, while 186 haplotypes are unique. The haplotype diversity is 0.9995+/-0.0006. The data obtained were compared to those of other Brazilian populations. AMOVA indicates that 99.91% of all the haplotypical variation is found within geopolitical regions and only 0.09% is found among regions. 相似文献
63.
Miguel Vázquez Liñán 《Communist and Post》2010,43(2):167-178
This paper analyzes the propaganda campaign orchestrated by the Russian authorities with the aim of promoting a version of the country’s history for political purposes. This version puts the accent on the exceptionality of Russian historical development, and is geared to endowing the figure of Vladimir Putin – seen as the person who has succeeded in carrying out a number of national projects that have been frequently abandoned throughout Russian history. The analysis presented here centres on two channels used in the campaign: school textbooks and the film industry. 相似文献
64.
What is the influence of the rules of political representation on local spending? This research tests the law of 1/n in the Portuguese local context and finds that the law fails to apply. We suggest an alternative measure—the density of representation—to assess the impact of the rules of city council representation on local public expenditures. Density of representation is defined as the number of elected officials in the city council divided by city population. We find an S-shaped relationship between the density of representation and the level of local government expenditures. The level of municipal spending initially declines with increases in the density of representation, reflecting an increase in the ability of constituents to monitor their elected representatives. At higher levels of representation density, the relationship becomes positive, suggesting that the dynamics of the budgetary commons become salient. The relationship becomes negative again for extremely high density of representation owing to increases in the transaction costs of legislative decision-making. This paper discusses the implications of our findings for the reform of local government institutions and the rules of political representation. 相似文献
65.
Seth J. Schwartz Jennifer B. Unger Alan Meca Elma I. Lorenzo-Blanco Lourdes Baezconde-Garbanati Miguel Ángel Cano Brandy Piña-Watson José Szapocznik Byron L. Zamboanga David Córdova Andrea J. Romero Tae Kyoung Lee Daniel W. Soto Juan A. Villamar Karina M. Lizzi Sabrina E. Des Rosiers Monica Pattarroyo 《Journal of youth and adolescence》2017,46(4):914-915
66.
Negative outcomes associated with adverse childhood experiences are well established, but little is known about protective factors that could promote positive adjustment among high-risk youth. This study examined the potential protective role of positive peer relationships in the association between adverse childhood experiences and school engagement among at-risk adolescents. Data were collected prospectively from birth until age 16 from 831 diverse adolescents (52.6% female; 54% African American, 24% Caucasian) who were at-risk for family violence and their caregivers. The significant and negative associations between adversities and school engagement outcomes at age 16 were mitigated by peer intimacy and companionship and exacerbated by peer conflict. The findings underscore the importance of fostering positive peer relationships for improving school engagement among at-risk adolescents. 相似文献
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69.
Miguel Otero-Iglesias 《Cambridge Review of International Affairs》2012,25(1):123-142
The main purpose of this article is to shift the dollar vs Euro debate away from US–EU centrism to perspectives from emerging markets. Drawing on 40 semistructured financial elite interviews in Brazil and China, the key research question studied here is whether the US dollar is malfunctioning as the leading international currency in these parts of the world, and, if so, whether the Euro can be an alternative to the greenback. The results show that the status of the dollar as the main anchor in the monetary system is seriously questioned among financial elites in China and Brazil. As yet, though, the Euro does not represent an alternative to the dollar because of its fiscal and political fragmentations. However, despite these institutional shortcomings, the European currency is seen as an ideational role model for super-sovereign monetary integration out of dollar unipolarity based on consensual negotiations not only on a regional, but also on a global scale. 相似文献
70.
Pedro Miguel F. Freitas Nuno Gonçalves 《International Review of Law, Computers & Technology》2015,29(1):50-62
Directive 2013/40/EU of the European Parliament and of the Council of 12 August 2013, on attacks against information systems, came into force on 3 September 2013, replacing Council Framework Decision 2005/222/JHA. It maintains existing offences and criminalizes new activities such as illegal interception and the usage of certain tools for committing offences. The offence that is the focus of this article – illegal access to information systems – is set out in Article 3. It represents a change from the wording of Art 2 (2) of the Framework Decision 2005/222/JHA in that under Art 3 of the Directive the incrimination of illegal access to information systems now depends upon whether such access infringes a security measure. This paper provides an overview of the impetus for the introduction of cybercrime laws and analysis of the key provisions of the Directive before exploring whether the wording of Art 3 is a sensible legislative approach. 相似文献