Assessing Carbon and Hydrogen Isotopic Fractionation of Diesel Fuel n-alkanes During Progressive Evaporation

Compound-specific isotope analysis offers potential for fingerprinting of diesel fuels, however, possible confounding effects of isotopic fractionation due to evaporation need to be assessed. This study measured the fractionation of the stable carbon and hydrogen isotopes in n-alkane compounds in neat diesel fuel during evaporation. Isotope ratios were measured using a continuous flow gas chromatograph/isotope ratio mass spectrometer. Diesel samples were progressively evaporated at 24 ± 2°C for 21 days. Increasing depletion of deuterium in nC₁₂–nC₁₇ alkanes in the remaining liquid with increasing carbon chain length was observed. Negligible carbon isotope fractionation was observed. Preferential vaporization was measured for the shorter chain n-alkanes and the trend decreased with increasing chain length. The decrease in δ²H values indicates the preferential vaporization of the isotopically heavier species consistent with available quantitative data for hydrocarbons. These results are most important in the application of stable isotope technology to forensic analysis of diesel.     

Trade liberalisation in the garment industry: Who is really benefiting?

World trade is increasingly conditioned by the rules of the World Trade Organisation. In the case of the garment industry this means the phasing out of the Multifibre Arrangement, which has dominated trade in textiles and garments since 1974. This phase-out is seen as benefiting developing countries and criticism focuses on the manner in which the USA and Europe are holding up the process. However, it is important to look at who exactly will gain or lose. Not all poor countries will benefit. Furthermore, the main profits from garment production go to the Northern companies who control the industry. These companies will benefit from more open markets and associated competition between global suppliers. Meanwhile, for workers North and South, this increased competition brings insecurity and the threat of deteriorating conditions of work.     

The Application of Learning Theory to Serial Murderor “You Too Can Learn to be a Serial Killer”

Popular ideas concerning serial murder see these killings as an act committed by a deranged or irrational individual. This article contends that this is not the case, but that the killer is behaving in a manner which makes sense and is logical to the killer and is a response to some perceived wrong. The process through which this reponse occurs is detailed. The conclusion suggests that if serial murder is indeed a learned response then this response can be “unlearned” and the serial murderer can be restored to again function within society.     

The Impact of Freezing on Bone Mineral Density: Implications for Forensic Research

It is common for researchers using animal or human remains for scientific study to freeze samples prior to use. However, effects of freezing on bone macro‐ or microstructure are relatively unknown. The research objective of this study was to determine whether freezing could potentially bias experimental results by analyzing changes in bone mineral density (BMD) with the freezing of remains over time. Eight fetal pigs were scanned to determine their initial BMD before freezing. Three piglets underwent a freeze‐thaw cycle to assess the effects of the freezing process. Four piglets were frozen and scanned weekly for 20 weeks to assess freezing over time. The overall average between the fresh initial scan and final frozen scan was significantly different (p < 0.001). Per contra, the final thawed BMD scans did not differ from the initial fresh scan (p = 0.418). Thus, completely thawed remains are recommended for experimental studies.     

Inside Irredentism: A Global Empirical Analysis

Although many countries have ethnic kin on the “wrong side” of their borders, few seek to annex foreign territories on the basis of ethnicity. This article examines why some states pursue irredentism, whereas others exhibit restraint. It focuses on the triadic structure of the kin group in the irredentist state, its coethnic enclave, and the host state, and provides new data on all actual and potential irredentist cases from 1946 to 2014. The results indicate that irredentism is more likely when the kin group is near economic parity with other groups in its own state, which results in status inconsistency and engenders grievances. It is also more likely in more ethnically homogeneous countries with winner‐take‐all majoritarian systems where the kin group does not need to moderate its policy to win elections by attracting other groups. These conditions generate both the grievance and opportunity for kin groups to pursue irredentism.     

Contemporary youth movements and the role of social media in Sudan

Youth activism in the last decade has become increasingly associated with new media technologies. The “Arab Spring”, it can be argued, prompted much interest among academics, policymakers and others on the intersection between youth, activism and social media. Although oftentimes seen as threats to authoritarian states, youths have become agents of change in the eyes of international foreign policy developers who claim to be keen on progressive and inclusive governance. This paper reflects on the role of social media in the recent (2011–2013) activism of Sudanese youth, who have taken centre stage at demonstrations calling for regime change, and adopting mechanisms similar to their counterparts in the Middle East/North Africa. While political forms of activism may have been more prominent in the Arab Spring, this paper argues that social media plays a key role in both political and community engagements of contemporary urban Sudanese youth, perhaps pointing to future possibilities.     

Education for Modernisation? The Impact of Higher Education Member Development Programmes on Councillors’ Perception and Performance of their Roles

The recent ‘modernisation’ process in local government has brought about the most significant, and certainly the most explicit, changes in councillor roles for decades. At the same time – partly as a result of this and partly for other reasons – there has been a significant growth in the provision of training for councillors, and in particular, training – or, rather, education – programmes provided by higher education institutions (HEIs). These accredited programmes, leading to standard, nationally recognised academic qualifications at a range of levels, first appeared in the early 2000s, and have been steadily growing since. The entry of supposedly disinterested institutions and academics and the introduction of accreditation into the field of member development raise a number of questions around potential conflicts of interest between councillors, officers and the academy, councillor motivation and selection processes. Of particular interest is the question of what HEIs and the courses they are providing are doing, deliberately or otherwise, to shape, reinforce or challenge the new (and old) roles explicitly and implicitly being introduced and promoted through the modernisation reforms. This article utilises interviews with councillors, local authority officers, academics and representatives of national bodies representing or with an interest in local government to examine how councillors’ roles and the way that they perform them are perceived by all involved, and whether these are altered by participation in a higher education programme of study.