排序方式: 共有47条查询结果,搜索用时 15 毫秒
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Andersson K Jalava K Lock E Finnon Y Huizer H Kaa E Lopes A Poortman-van der Meer A Cole MD Dahlén J Sippola E 《Forensic science international》2007,169(1):50-63
This study focused on gas chromatographic analysis of target compounds found in illicit amphetamine synthesised by the Leuckart reaction, reductive amination of benzyl methyl ketone, and the nitrostyrene route. The analytical method was investigated and optimised with respect to introduction of amphetamine samples into the gas chromatograph and separation and detection of the target substances. Sample introduction using split and splitless injection was tested at different injector temperatures, and their ability to transfer the target compounds to the GC column was evaluated using cold on column injection as a reference. Taking the results from both techniques into consideration a temperature of 250 degrees C was considered to be the best compromise. The most efficient separation was achieved with a DB-35MS capillary column (35% diphenyl 65% dimethyl silicone; 30 m x 0.25 mm, d(f) 0.25 microm) and an oven temperature program that started at 90 degrees C (1 min) and was increased by 8 degrees C/min to 300 degrees C (10 min). Reproducibility, repeatability, linearity, and limits of determination for the flame ionisation detector (FID), nitrogen phosphorous detector (NPD), and mass spectrometry (MS) in scan mode and selected ion monitoring (SIM) mode were evaluated. In addition, selectivity was studied applying FID and MS in both scan and SIM mode. It was found that reproducibility, repeatability, and limits of determination were similar for FID, NPD, and MS in scan mode. Moreover, the linearity was better when applying FID or NPD whereas the selectivity was better when utilising the MS. Finally, the introduction of target compounds to the GC column when applying injection volumes of 0.2 microl, 1 microl, 2 microl, and 4 microl with splitless injection respectively 1 microl with split injection (split ratio, 1:40) were compared. It was demonstrated that splitless injections of 1 microl, 2 microl, and 4 microl could be employed in the developed method, while split injection and splitless injections of 0.2 microl should be avoided. 相似文献
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Matthias Goldmann 《European Law Journal》2017,23(3-4):272-289
In his seminal 1944 book The Great Transformation, Polanyi describes the rise and fall of liberal capitalism during the long nineteenth century. Many have realised that Polanyi has a lot to tell about the European Union in the aftermath of the financial crisis. The paper begins with an overview of Polanyi's historiography of the failure of nineteenth‐century liberal capitalism and his account of the four elements that helped liberal capitalism thrive, while precipitating its collapse—the idea of the self‐regulating market, the gold standard, international peace and liberal constitutionalism. Thereafter, the paper describes the particular transformations that these four elements underwent in the course of European integration and after the financial crisis, with a particular focus on the case law of the Court of Justice. The paper argues that their current constellation has a destructive potential that exceeds the economic dimension of the Union and might pave the way for a much greater failure, one that might defeat Europe's greatest success: the establishment of peace. Ultimately, the paper assesses current reform proposals in light of these insights and makes a number of proposals for re‐embedding the economy in society. 相似文献
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Hans‐Eike Gäbler Ph.D. Wilhelm Schink M.S. Simon Goldmann Ph.D. Andreas Bahr B.S. Timo Gawronski M.S. 《Journal of forensic sciences》2017,62(4):881-888
Ongoing violent conflicts in Central Africa are fueled by illegal mining and trading of tantalum, tin, and tungsten ores. The credibility of document‐based traceability systems can be improved by an analytical fingerprint applied as an independent method to confirm or doubt the documented origin of ore minerals. Wolframite (Fe,Mn)WO4 is the most important ore mineral for tungsten and is subject to artisanal mining in Central Africa. Element concentrations of wolframite grains analyzed by laser ablation‐inductively coupled plasma‐mass spectrometry are used to establish the analytical fingerprint. The data from ore concentrate samples are multivariate, not normal or log‐normal distributed. The samples cannot be regarded as representative aliquots of a population. Based on the Kolmogorov–Smirnov distance, a measure of similarity between a sample in question and reference samples from a database is determined. A decision criterion is deduced to recognize samples which do not originate from the declared mine site. 相似文献
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Kjell Erling Kjellman Kristian Berg Harpviken Ananda S Millard Arne Strand 《Third world quarterly》2013,34(5):855-871
This article looks at co-ordination within humanitarian mine action (hma), and co-ordination between hma and other humanitarian and development initiatives. The discussion focuses specifically on the role of UN-led Mine Action Centres (macs) and the analysis draws on case studies of Bosnia and Herzegovina and Afghanistan. A contention throughout is that macs often employ a rigid approach to co-ordination. This constricts the flexibility of mine action organisations, limits the development of creative initiatives and poses a barrier to co-ordination between hma and other humanitarian initiatives. A second point pursued is that co-ordination arrangements are embedded in a broader institutional context, and this context has in turn the potential to impact on co-ordination. The analysis presented here suggests a number of implications for hma in general, together with a number of policy considerations. The article concludes by offering some thoughts for the future on the importance of effective co-ordination arrangements both within hma as a sector and between hma and other sectors of humanitarian assistance. 相似文献
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Forty-five female outpatients sexually abused in childhood were offered a 2-year phase-divided group therapy. Before and after treatment and at 12 months follow-up, they answered questionnaires designed to elicit responses concerning psychological symptoms (Symptom Checklist; SCL-90) and sense of coherence (SOC). Symptoms for posttraumatic stress disorder (PTSD) were assessed before and after treatment. Inpatient days and sick listing days were assessed during 2 years before and 2 years after treatment. The psychological and PTSD symptoms were significantly reduced after treatment, and the SOC was increased as well. Inpatient days were decreased, and sick listing days increased but not significantly. Compared to a similar short-term focused therapy group and a waiting-list group there were no significant differences between the groups. Trauma-focused group therapy for women who were sexually abused in childhood seems to have promising effects on mental health, both concerning long-term and short-term approaches. 相似文献
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Aalberg L Andersson K Bertler C Borén H Cole MD Dahlén J Finnon Y Huizer H Jalava K Kaa E Lock E Lopes A Poortman-van der Meer A Sippola E 《Forensic science international》2005,149(2-3):219-229
Reference material was synthesised for 21 substances that are frequently present as synthetic impurities, i.e. by-products, in illicitly produced amphetamine. Each of these substances is a typical by-product for at least one of the three approaches most often used to synthesise amphetamine, namely, the Leuckart, the reductive amination of benzyl methyl ketone, and the nitrostyrene routes. A large body of data on the substances was recorded, including the following: mass spectra, ultraviolet spectra, Fourier transform infrared spectra, infrared spectra in gas phase, and 1H NMR and 13C NMR spectra. 相似文献