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Karim M. Abdel‐Hay Ph.D. Jack DeRuiter Ph.D. C. Randall Clark Ph.D. 《Journal of forensic sciences》2015,60(2):285-294
A number of N‐substituted piperazines have been described as drugs of abuse in recent years. This new drug category includes several series of aromatic ring substituted phenylpiperazines. The wide variety of available precursors makes regioisomerism a significant issue in these totally synthetic compounds. In this study, a complete series of regioisomeric dimethoxyphenylpiperazines were synthesized and evaluated using GC‐MS and FT‐IR. The EI mass spectra show fragments characteristic of both the dimethoxyphenyl and the piperazine portions of the molecules including the dimethoxyphenylaziridinium cation (m/z 180) and dimethoxyphenyl cation (m/z 137). The ion at m/z 56 for the C3H6N+ fragment is characteristic of the piperazine ring and was observed in all the spectra. The perfluoroacyl derivatives were resolved by GC, and their mass spectra showed some differences in relative abundance of ions. FTIR provides direct confirmatory data for differentiation between the regioisomeric dimethoxyphenylpiperazines, and GC separation was accomplished on an Rtx‐200 phase. 相似文献
636.
Development, as an idea and an industry, is premised on the assumption that all states have the ability to raise the material wellbeing of citizens. For many this appears to be working but the ideal is problematic for a sub-set of the world's smallest countries: the Pacific Island states. These states have sought to develop conventional export trade-based economies but are disadvantaged in this, and in service sector development, by a combination of well-known factors, including resource bases, size and location. By default, migration has become a least-worst development option for many island peoples and governments, involving engagement with the periphery and contributing to income generation and poverty alleviation. This deterritorialisation presents an alternative to mainstream development theory and practice in its current state-centric form, and emphasises the emerging significance of non-state approaches to development. 相似文献
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Do Open Primaries Improve Representation? An Experimental Test of California's 2012 Top‐Two Primary
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To improve representation and alleviate polarization among US lawmakers, many have promoted open primaries—allowing voters to choose candidates from any party—but the evidence that this reform works is mixed. To determine whether open primaries lead voters to choose ideologically proximate candidates, we conducted a statewide experiment just before California's 2012 primaries, the first conducted under a new top‐two format. We find that voters failed to distinguish moderate and extreme candidates. As a consequence, voters actually chose more ideologically distant candidates on the new ballot, and the reform failed to improve the fortunes of moderate congressional and state senate candidates. 相似文献
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As the government announces a programme to teach Muslim women to speak English, this article examines how such a policy can be implemented successfully, arguing that lessons can be drawn from both academic research, especially that carried out with Muslim women themselves, and previous successful policy application. It focuses on two projects carried out in the recent past for the Learning and Skills Council (LSC) and Jobcentre Plus, and outlines the key factors that led to their success. The LSC project involved one of the largest in‐depth surveys of Muslim women's attitudes towards work, and their views on life in Britain, that has ever been undertaken. The Jobcentre Plus project was a highly successful and innovative employment training initiative for ethnic minority women piloted in Sheffield, the very kind of ‘targeted’ approach that Mr Cameron has claimed his government's new language initiative will be. 相似文献
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Fanny Salignac Axelle Marjolin Jack Noone Gemma Carey 《Australian Journal of Public Administration》2019,78(2):227-249
The changing nature of organisations in the public sector means that collaboration has become an imperative for many. Notwithstanding considerable scholarly agreement about factors contributing to successful collaboration, a broadly accepted model of collaborative practice has not coalesced. In this paper, we put forward an augmented collaboration assessment tool. Building on existing research, we argue that systems thinking can help us better account for the dynamic and multidimensional nature of collaboration – a process in which partner organisations are interconnected and organised in a way that seeks to achieve a common purpose that they could not have achieved alone. We tested the validity of our tool using a three‐stage, iterative mixed‐methods approach. Our research confirms the value of a diagnostic tool to assist collaboration partners navigate an often uncertain terrain. It further establishes the value of our tool in illuminating a collaboration's dynamic interactions as a means to evaluate ‘collaboration health’. 相似文献