An analytical evaluation of eight on-site oral fluid drug screening devices using laboratory confirmation results from oral fluid

A decaying cadaver emits volatile organic compounds that are used by necrophilous and necrophagous insects in order to find their brood substrate. Although volatile organic compounds (VOCs) that are released by carcasses have been identified, little is known about the specific compounds that are used by these insects while searching for a brood substrate. Therefore, we have investigated the chemical ecology involved in the attraction of the necrophagous hide beetle Dermestes maculatus, which feeds as an adult and larva upon decomposing carcasses. Our aims have been to identify the responsible compounds in the odours of the carcass that are important for the attraction of the beetles. Furthermore, we have studied sex- and age-related differences in beetle attraction and tested whether the hide beetle can distinguish between various stages of decomposition by means of the emitted odours. Headspace collection of volatiles released from piglet carcasses (bloated stage, post-bloating stage, advanced decay and dry remains), coupled gas chromatography-mass spectrometry (GC-MS), gas chromatography with electroantennographic detection (GC-EAD) and bioassays were conducted to identify the volatiles responsible for the attraction of the beetles. Freshly emerged male beetles were attracted by the odour of piglets in the post-bloating stage (9 days after death; T(mean) = 27 °C) and the EAD-active compound benzyl butyrate. Statistical analysis revealed a higher relative proportion of benzyl butyrate in the odour bouquet of the post-bloating stage in comparison with the other stages. We therefore conclude that this compound plays an important role in the attraction of hide beetles to carcass odour. This underlines the potential use of D. maculatus for the estimation of the post mortem interval. The decomposition stage at which the female beetles are attracted to the odour of a cadaver remains unknown, as does the nature of this attraction. Pheromones (sexual or aggregation pheromones) might play an essential role correlated with their attraction to carrion and consequently with their attraction to the substrate for mating and ovipositioning.     

Lessons from Democratic Transitions: Case Studies from Asia

In an era when democratization is stalled or in retreat in many parts of the world, it is important to highlight the successful democratic experience of East and Southeast Asia in recent decades. Five consolidated democracies have emerged since the mid-1980s; only Thailand has seen some backsliding with the 2006 coup. The Asian cases provide insights into several major debates in the democratization literature, including the relative importance of culture, history, economic structure, and the optimal sequencing of political and economic reform. This article reviews these issues, with particular attention to the role of outside powers in underpinning democratization. Ultimately, the Asian cases offer evidence for optimism about the prospects of a Fourth Wave of democratization.     

Whither Lafayette? French military policy and the American campaign in Afghanistan

During the American‐led military campaign against international terrorism, France has sought to preserve its special status and role as a global power. This effort continues longstanding French policies designed to maintain autonomy in security and foreign policy areas. Such policies create differences and discord with the United States over coalition warfare. This article examines the underpinnings of American and French preferences for coalition military missions in the context of national policy and past military operations. A case study of French participation in the operations in Afghanistan provides the framework for analysis.     

Why Unfree Labour is Not ‘So-Called’: The Fictions of Jairus Banaji

In a recent critique of the deproletarianization thesis, which links the reproduction of unfree labour mainly - but not only - in Third World agriculture to class struggle prosecuted by capitalist producers, Banaji maintains in effect that there is no such thing as unfree labour. Equating the latter with nineteenth-century liberal ideas about freedom as consent, he conceptualizes all historical working arrangements simply as ‘disguised’ wage-labour that is free, a theoretically problematic claim first made during the Indian mode of production debate. Such a view, it is argued here, ignores the fact that unfree workers get paid and also appear in the labour market, but not as sellers of their own commodity. Moreover, by abolishing the free/unfree labour distinction, and adopting instead the view that all rural workers are simply ‘disguised’ hired labourers who are contractually ‘free’, Banaji aligns himself with anti-Marxist theory in general, and neoclassical economic historiography in particular.