SEM/EDS analysis and characterization of gunshot residues from Brazilian lead-free ammunition

The exposition to heavy metal-rich airborne due to fire practicing has forced to the development of heavy metal-free environmental ammunition primers all over the world. Here we characterize the GSR elements present in the Brazilian lead-free ammunition produced by Companhia Brasileira de Cartuchos (CBC) and commercialized by MagTech in the U.S. and Europe under the name CleanRange centerfire cartridges. Both first and second generations of CleanRange in calibers 9 mm Luger, .40 S&W, .380 AUTO and .38 SPL were analyzed and compared to regular Brazilian CBC ammunition by scanning electron microscopy/energy dispersive spectroscopy. Differences in composition and morphology of GSR particles from the two generations of CleanRange were observed. The first generation ammunition (found in Europe) presented spherical particles, being strontium the only unique element detected. The second generation (found in the U.S.) produced irregular particles composed mostly by potassium, aluminum, silicon and calcium. We can conclude that identification of GSR derived from CBC second generation lead-free ammunition in suspects' hands may be impossible without the addition of a distinct metallic taggant in the primer composition by the manufacturer.     

Criminal Justice in a Democracy: Towards a Relational Conception of Criminal Law and Punishment

This article starts from the observation that in classical Athens the discovery of democracy as a normative model of politics has been from the beginning not only a political and a legal but at the same time a philosophical enterprise. Reflections on the concept of criminal law and on the meaning of punishment can greatly benefit from reflections on Athenian democracy as a germ for our contemporary debate on criminal justice in a democracy. Three main characteristics of the Athenian model will be analysed: the self-instituting capacity of a democracy based on participatory and reflective citizenship, political power as the capacity of citizens for co-operating and co-acting with others, and the crime of hubris as one of the key issues in Athenian criminal law. These analyses will lead to the conclusion that one of the key issues of a democratic legal order lies in its capacity of recognizing the fragility of the human condition and of developing workable and effective standards of justice in that context. A relational conception of criminal law and punishment, based on proportionality, reflexivity, mutual respect and responsibility fits best with a democracy under the rule of law.

Market Structure and R∧D Joint Ventures: The Case of Product Innovations

Departing from the received fact that research joint venture agreements are allowed on the grounds of a permissive ruling, we study what conditions are necessary for venture partners to carry on RD cooperation to the marketing stage. We treat the case of product innovations exploitable with different usages in unconnected markets. Two main results appear: firms always have incentives for a distribution of varieties, but not always agree on the distribution of products. The condition for the last result to happen gives a useful rule for antitrust authorities relating the degree of sustitutability across varieties and the relative profitability of the markets.     

Dignity,discrimination, and context: New directions in South African and Canadian human rights law

Conclusion The current approaches to equality law in South Africa and Canada place these jurisdictions at the forefront of serious and comprehensive judicial at tempts to give effect to substantive equality. These attempts to overcome formalism are processes, judicially acknowledged as such, and as yet far from complete. At the conceptual center of the development of substantive equality is the legal realization of human dignity: not an abstract, individualistic notion, but a concept about the relation between the individual and state, and individual and group, which is circumscribed by concern, respect and consideration. But substantive equality is not possible only through the case law. The current issues surrounding intersectional discrimination and the contextual appreciation of a claimant’s circumstances are urgent reminders that the methods and remedies afforded by the structure of litigation of equality rights claims simply cannot accommodate many instances which call for relief. The fact that these inadequacies of court enforced claims are beginning to be laid bare by some of the problems being faced by the Courts in equality claims is perhaps not a failing of equality law and the concept of dignity, but its strength. The methodology of human rights litigation in countries like Canada and South Africa supports a dialogue between court and legislature. As substantive equality develops in these jurisdictions, the limits of judicial development will be challenged. That is ultimately to be welcomed, if the legislatures are responsive to the definition of human dignity and substantive equality in development judicially, and respond with efforts to support and promote these developments.     

Identification of ten corticosteroids in human hair by liquid chromatography-ionspray mass spectrometry

This paper describes a screening procedure based upon high-performance liquid chromatography-ionspray mass spectrometry for the identification of ten corticosteroids in human hair: triamcinolone, prednisolone, prednisone, methylprednisolone, cortisone, cortisol, beta- and dexamethasone, flumethasone and beclomethasone. Hair strands were washed in methylene chloride, pulverized in a ball mill and 50 mg of the powdered hair were incubated in 1 ml Soerensen buffer, pH 7.6 for 16 h at 40 degrees C, in presence of 50 ng cortisol-d3 used as internal standard. Purification of the incubation medium was achieved on SPE C18 Isolute extraction columns. The eluates were evaporated to dryness and resuspended in 30 microliters MeOH before analysis by HPLC-IS-MS in positive and negative modes of detection. The validation parameters were found satisfactory for a corticosteroid screening procedure. The correlation coefficient of the calibration curve ranged from 0.939 to 0.997, showing linearity between 0.1 and 10 ng/mg, excepted for beclomethasone which was between 0.2 and 10 ng/mg. Extraction recovery at 4 ng/mg ranged from 43.2 to 85.7%. Repeatability (CV values) at 4 ng/mg ranged from 6.1 to 17.5%. The limits of detection ranged from 0.03 to 0.17 ng/mg for a signal-to-noise ratio of 2. The detection of prednisone and beclomethasone in three hair specimens obtained from forensic and clinical cases have documented corticosteroids incorporation into human hair.