The detection of metallic residues in skin stab wounds by means of SEM-EDS: A pilot study

The morphological analysis of stab wounds may often not be accurate enough to link it with the type of wounding weapon, but a further evaluation may be performed with the search for metallic residues left during the contact between the instrument and the skin. In this study, Scanning Electron Microscopy-Energy Dispersive Spectroscopy (SEM-EDS) was applied to the study of cadaveric stab wounds performed with kitchen knives composed of iron, chromium and nickel, in order to verify the presence of metallic residues on the wound's edge. Two groups of 10 corpses were selected: group A, including victims of stab wounds and a control group B (died of natural causes). Samplings were performed on the lesions and in intact areas of group A, whereas in group B sampling were performed in non-exposed intact skin. Samples were then analysed with optical microscopy and SEM-EDS. In group A, optical microscopic analysis showed the presence of vital haemorrhagic infiltration, while SEM-EDS showed evidence of microscopic metal traces, isolated or clustered, consisting of iron, chromium and nickel. Moreover, in two cases organic residues of calcium and phosphate were detected, as a probable sign of bone lesion. Control samples (group A in intact areas and group B), were negative for the search of exogenous material to optical microscopy and SEM-EDS. The results show the utility and possible application of the SEM-EDS in theidentification of metallic residues from sharp weapons on the skin.     

Two cases of acute propane/butane poisoning in prison

Hydrocarbon inhalation is seldom chosen as a means to commit suicide. This practice is exclusively a prerogative of the prison population; it is, however, only exceptionally found in this environment. The two cases of lethal inhalation of propane/butane gas observed by us over a very short time occurred in this context. Toxicologic analyses were performed by means of gas chromatography (head space) and revealed a propane/butane mixture in all specimens (heart blood, bile, and urine) except vitreous humor. Although fatal arrhythmia posthydrocarbon gas abuse is well known, the concentrations of the two hydrocarbons were sufficient to induce death by asphyxiation and were distributed (fairly) homogeneously in all biological fluids and organs examined, a parameter permitting one to assume that death occurred within a relatively short period of time. The absence of finding in vitreous humor and the trace amount in urine suggests that both men died very quickly.     

University technology transfer and the evolution of regional specialization: the case of Turin

The Journal of Technology Transfer - The paper is aimed at obtaining a better understanding of the role played by universities in the technological development and specialization of the territories...     

The Albanian approach to municipal borrowing: From centralized control to market discipline

Local governments (LGs) in transitional countries face pressing infrastructure needs, which, given the severe shortcomings of traditional funding, make a strong case for debt financing. This article explores the case study of Albania, using document analysis and interviews with mayors, civil servants, citizens and investors. We go beyond an analysis of technical aspects (macroeconomic conditions and legal constraints on borrowing) to include ‘soft’ elements (political and managerial issues, attitudes of key actors), with the aim of highlighting the approach adopted under current policies and the approach that should be adopted. Favorable macroeconomic conditions and the completeness of the legal framework have motivated policy‐makers to choose the market model. Their aim is to develop the financial market rapidly; however, the development of sound management systems at the local level is largely ignored. We argue that the role of managerial capacities, public accountability and professional mechanisms is not adequately taken into account. Future policies need to make the best use of some early experiences of public participation and build upon the extensive training in accounting and auditing issues provided to local civil servants in order to exploit other models of municipal borrowing control. Copyright © 2010 John Wiley & Sons, Ltd.