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排序方式: 共有109条查询结果,搜索用时 15 毫秒
21.
Strano-Rossi S Castrignanò E Anzillotti L Serpelloni G Mollica R Tagliaro F Pascali JP di Stefano D Sgalla R Chiarotti M 《Forensic science international》2012,221(1-3):70-76
New Italian legislation on driving under the influence of drugs considers oral fluid (OF) as a possible alternative drug testing matrix. On this basis, the present research was carried out to evaluate the applicability of four commercial on-site OF drug screening devices, namely DDS(?), Drugtest 5000(?), Drugwipe 5+(?) and RapidSTAT(?), in a real operative context. Preliminarily trained police officers tested randomly stopped drivers with two different kits side-by-side during roadside patrols. A central laboratory confirmed on-site kits' results by UHPLC-MS/MS analysis of the saliva specimen remaining after the screening analysis. 1025 drivers were submitted to the OF tests: 11.6% were positive for cocaine and metabolites, 11.1% for THC, 6% for amphetamines and amphetamine-type designer drugs and 2.3% for ketamine. The sensitivities of the kits were 81% (RapidSTAT(?)), 82% (DDS(?)), 90% (Drugwipe 5+(?)) and 97% (Drugtest 5000(?)) for cocaine and 38% (DDS(?)), 47% (Drugwipe 5+(?)), 72% (RapidSTAT(?)) and 92% (Drugtest 5000(?)) for THC. Drugtest 5000 was the only kit showing an acceptable sensitivity for on-site application. Only Drugtest 5000(?) and RapidSTAT(?) could be evaluated for amphetamines and methamphetamines: Drugtest 5000(?) showed a sensitivity of 100% in the case of amphetamines and 86% for methamphetamines, while RapidSTAT(?) 90% and 76% respectively. Nowadays, ketamine is not included in the target analytes of any on-site devices, but it was systematically included in the UHPLC-MS/MS confirmatory analysis. To ensure adequate reliability, MS confirmation of on-site OF screening tests is anyway always necessary, due to the presence of a significant number of false positive results even when using the commercial kit with the best performance. 相似文献
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G. Robert Franco 《发展研究杂志》2013,49(2):202-215
This model strives to assess the relationship between domestic credit and the balance of payments in Ghana during the 1961—75 period in an effort to guide policymakers in generating credit policies aimed at reaching a particular balance of payments objective. An equation is derived and estimated which specifies the relationship between domestic credit, exports, capital flows, and net foreign assets within a constraint imposing balance of payments equilibrium. The general conclusions of the analysis are that excessive increases in domestic credit were the principal cause for the balance of payments deficits incurred by Ghana during the period considered. 相似文献
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The determination of dyes present in illicit pills is shown to be useful and easy-to-get information in strategic and tactical drug intelligence. An analytical strategy including solid-phase extraction (SPE) thin-layer chromatography (TLC) and capillary zone electrophoresis equipped with a diode array detector (CZE-DAD) was developed to identify and quantify 14 hydrosoluble, acidic, synthetic food dyes allowed in the European Community. Indeed, these may be the most susceptible dyes to be found in illicit pills through their availability and easiness of use. The results show (1) that this analytical method is well adapted to small samples such as illicit pills, (2) that most dyes actually found belong to hydrosoluble, acidic, synthetic food dyes allowed in the European Community, and (3) that this evidence turns out to be important in drug intelligence and may be assessed into a Bayesian framework. 相似文献
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Lorenzo Avanzi Stefano Albertini Franco Fraccaroli Guido Sarchielli Giovanni De Plato Rolf van Dick 《International Public Management Journal》2018,21(4):677-702
The aim of this article is to explore identity dynamics of unit and department leaders in a healthcare setting using both social identity and social exchange theories. In particular, we developed a mediational moderated model in which supervisor trust indirectly influences identification with a subordinate level (i.e., the clinical unit) through its effect on identification with a superordinate level (i.e., the organization as a whole). Furthermore, we predicted and found that this relation is moderated by organizational tenure, contract breach, and the clinical-manager's role (heads of clinical units vs. chairs of departments). We tested our hypotheses with doctors of a large public hospital in northern Italy. A total of 370 doctors completed questionnaires measuring organizational and unit identification, supervisor trust, and contract breach. Results supported our hypotheses: supervisor trust was related to unit identification through its effect on organizational identification. As expected, this relation was stronger for more tenured department chairs, and for those doctors who perceived less contract breach. 相似文献
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Eli Franco 《Journal of Indian Philosophy》2005,33(5-6):631-633