Inter-species variation in bone mineral behavior upon heating

The characterization of inter-species variation in bone mineral (b-HAP) is of relevance to forensic science and archaeology, but has not previously been widely explored. Results of an investigation into unheated bone mineral and behavior of bone upon heating for 12 animal species (including human) demonstrate that b-HAP characteristics, quantitatively measured using X-ray diffraction (XRD) analysis, exhibit significant inter-species variation. Human bone was found to be significantly different to all other species in terms of b-HAP lattice parameter values from unheated and heated bone and in terms of recrystallization behavior of b-HAP upon heating bone to 600°C. The amounts of b-HAP thermal decomposition products were also significantly different for human bone heated to 1400°C compared to those obtained for most other species. Therefore, there is potential for the development of an XRD-based method of species identification, particularly one that distinguishes human from non-human bone.     

Elemental analysis of glass fragments by ICP-MS as evidence of association: analysis of a case

Inductively coupled plasma mass spectrometry (ICP-MS) was used to analyze glass evidence from a case in which a person broke a window in each of 15 vehicles in a parking lot in order to gain entry into the vehicles. The results of the analysis by traditional methods, which measure the properties of color, thickness, density, and refractive index, are also reported. A total of 15 known samples representing the windows on the cars and 42 questioned glass fragments recovered from the suspect and the police vehicle where the suspect was sitting were submitted for analysis. Density comparisons separated one of the known samples into three samples, increasing the number of known samples from 15 to 17. The concentrations of 16 elements were measured for all but three of the samples using an external calibration ICP-MS method with internal standardization. Color assessment (non-instrumental) separated the 17 known samples into two groups, and refractive index measurements resulted in six groups when the Emmons double variation method was used and ten groups when the Glass Refractive Index Measurement 2 (GRIM2) system was used. Elemental analysis, by itself, differentiated all of the known samples from each other and associated four of the known sample fragments with several of the questioned sample fragments. The informing power of RI, density, and elemental analysis comparisons is evaluated and a summary of the case results is reported.     

Analysing decentralised natural resource governance: proposition for a “politicised” institutional analysis and development framework

There has often been a gap between policy intentions and outcomes in the field of natural resource governance. Analysing the factors for these discrepancies requires multi-level approaches that relate policy decisions formulated at the national and international level with the decisions of local resource users. A key asset of the Institutional Analysis and Development framework is precisely its ability to link multiple governance levels. Yet most commons literature has been limited to the study of collective action among local communities without considering higher institutional and government levels. To overcome this limitation, I posit for a methodological development of the framework, which bridges the gap between institutional analysis, power-centred and historical approaches, and discourse analysis. The application of the extended framework to the study of state afforestation policies in Vietnam highlights the need to simultaneously consider institutions, the politico-economic context and discourses across governance and government levels. As illustrated in this paper, such a framework does not only facilitate the analysis of policy shortcomings but also supports the design and dissemination of policy recommendations.     

Non-destructive testing techniques for the forensic engineering investigation of reinforced concrete buildings

This study describes in detail the results of a laboratory investigation where the compressive strength of 150mm side-length cubes was evaluated. Non-destructive testing (NDT) was carried out using ultrasonic pulse velocity (UPV) and impact rebound hammer (IRH) techniques to establish a correlation with the compressive strengths of compression tests. To adapt the Schmidt hammer apparatus and the ultrasonic pulse velocity tester to the type of concrete used in Algeria, concrete mix proportions that are recommended by the Algerian code were chosen. The resulting correlation curve for each test is obtained by changing the level of compaction, water/cement ratio and concrete age of specimens. Unlike other works, the research highlights the significant effect of formwork material on surface hardness of concrete where two different mould materials for specimens were used (plastic and wood). A combined method for the above two tests, reveals an improvement in the strength estimation of concrete. The latter shows more improvement by including the concrete density. The resulting calibration curves for strength estimation were compared with others from previous published literature.     

Narcophobia: drugs prohibition and the generation of human rights abuses

This paper is concerned with the negative aspects of global drugs prohibition. The paper argues that prohibition, which is driven by moralism rather than empirical research, creates a black market that is regulated by violent entrepreneurs, and particular in developing countries where there is a lack of economic opportunities for the poor, offers the only feasible employment options. The paper suggests that the results of experimental legislation should be taken seriously. The militarisation of prohibition enforcement has hindered the advancement of democracy and led to violence and increases in human rights abuses. In conclusion it is argued that the current system of global prohibition creates more problems than it solves, and that issues of drug production and trade need to be dealt with by regulation from within a development perspective.     

Implementing multicultural policy: an analysis of the heritage language program, 1971–1981

While O'Bryan and associates carried out a good comprehensive national survey in the 1970s of non-official language use in Canada, such a major study rum needs to be done in the 1980s as well. Such a new update could use more sophisticated methods of analysis, to ensure greater penetration into the quality of language comprehension and use.     

On the transmission mechanisms in the finance–growth nexus in Southern African countries: Does institution matter?

Economic Change and Restructuring - Studies have continued to emerge on the transmission channels through which finance influences growth. It has been argued that more finance without efficient...