Acetaldehyde accumulation during headspace gas-chromatographic determination of ethanol

The acetaldehyde accumulation in blood during the equilibration time of samples processed by gas-liquid chromatographic headspace technique is reported. The quantitative loss of blood ethanol concentration is recorded at various temperatures and times of the preheating process.When the equilibration process is performed at 40 °C, minimal errors, due to ethanol oxidation, are observed.     

The Successful Recovery of Low Copy Number and Degraded DNA from Bones Exposed to Seawater Suitable for Generating a DNA STR Profile

A universal method allowing for DNA profiling from bones exposed to seawater has not been reported yet. This study refers on the identification of a body immersed in seawater for 8 months. The biological material for identification was the mandibular body, usually characterized by low success rates of DNA analysis. Initially, two extraction protocols were performed with negative results: one used for bones immersed in fresh water and a silica‐column procedure. A third protocol was performed, which combined the extraction of a higher amount of bone powder, the use of multi‐silica‐based extraction columns followed by a concentration step. This protocol allowed to obtain low copy number DNA and to generate a 12‐loci STR profile by combining conventional STR typing and mini‐STR technologies. This protocol could be suitable when human bones have been exposed to severe environmental conditions, and the available nuclear DNA is highly degraded and in low copy number.     

Capturing Crime at the Micro-place: A Spatial Approach to Inform Buffer Size

Journal of Quantitative Criminology - The current study develops a methodology to identify spatially relevant buffer sizes for micro-place evaluation research. It applies this methodology in an...     

Legislative Intentions and Counterfactu-als: Or,What One Can Still Learn from Dworkin's Critique of Legal Positivism

Riggs v. Palmer has become famous since Dworkin used it to show that legal positivism is defective. The debate over the merits of Dworkin's claims is still very lively. Yet not enough attention has been paid to the fact that the content of the statute at issue in Riggs was given by the counterfactual intention of the legislature. According to arguments from legislative intent, a judicial decision is justified if it is based on the lawmaker's intention. But can legislative intentions be determined counterfactually? More generally, what are the discursive commitments undertaken by a lawyer or a judge, in an exchange of legal reasons, when using this interpretive methodology? This paper addresses these issues considering, in particular, David Lewis's “resemblance” condition and “relevant similarity” between possible worlds in the evaluation of counterfactual statements. The analysis sheds some new light on the debate on theoretical disagreements and shows that Dworkin's conception of law as an argumentative practice is not necessarily at odds with legal positivism. It rather allows us to look at it under a better light.     

Are lions democrats? The impact of democratization on economic growth in Africa, 1980–2010

If we look back at the past two decades, timing seems to point to a close connection between democratic reforms and economic growth in sub-Saharan states. Most countries in the area introduced multiparty politics and made dramatic – if incomplete – democratic progress between 1990 and 1994. Quite strikingly, it is exactly from 1994 to 1995 (and particularly from 2000) that the region began to undergo a period of significant economic progress. Because of the undeniable temporal sequence experienced in the region – that is, first political reforms, then economic growth – some observers pointed to a nexus between democratic progress and economic performance. But is there evidence in support of a causal relationship? As of today, no empirical research has been conducted on the democracy–growth nexus in the early twenty-first century's so-called “emerging Africa”. To fill this gap, we discuss the different arguments claiming an economic advantage of democracies, we present our theoretical framework and carry out an empirical analysis of the growth impact of political regimes in 43 sub-Saharan states for the entire 1980–2010 period. Our findings confirm that African countries, many of which had long suffered the combination of authoritarian rule and predatory practices, derived some economic dividends from democratic progress.     

Cengagement des citoyens: Une alternative pour le renouvelle‐ment des relations entre les Autochtones et les non‐Autochtones

Sommaire: L'engagement des citoyens dans la formulation des politiques publiques pose de nombreux défis. Certains secteurs de la société canadienne les révèlent avec une acuité toute particulière et les questions relatives aux relations entre les Autochtones et les non‐Autochtones en sont un exemple. Signalons entre autres que tout projet d'engagement doit d'abord s'appliquer à favoriser un rapprochement entre les communautés autochtones et non‐autochtones. Ce texte présente les enseignements tirés d'une expérience d'engagement menée au Nouveau‐Brunswick par une équipe d'apprentissage formée de fonctionnaires fédéraux et provinciaux, de citoyens autochtones et non‐autochtones et d'universitaires. On y propose un modèle original inspiré d'expériences menées dans d'autres secteurs d'activité au Canada et reposant sur cinq conditions: un climat de confiance, une information accessible et crédible, l'existence de points communs, un dialogue sur les valeurs et les convictions et un processus souple. Cet article aborde quelques‐unes des grandes questions actuelles: gouvemance, démocratie, innovation, diversité, cohésion sociale, culture et valeurs. Abstract: The engagement of citizens in government decision‐making poses multiple challenges. Some issues in Canadian society, such as relations between aboriginal and non‐aboriginal people, illustrate these challenges in a particularly evident manner. For example, any commitment initiative involving the aboriginal and non‐aboriginal communities must be designed first to promote reconciliation. This article outlines the lessons learned from a commitment experiment conducted in New Brunswick by a learning team made up of federal and provincial public servants, aboriginal and non‐aboriginal citizens, and academic staff. It offers an original model inspired by experiments conducted in other activity sectors in Canada and based on five criteria: climate of trust, accessible and credible information, focus on commonality, dialogue on values and convictions, and flexible process. This article addresses some of the major current issues: governance, democracy, innovation, diversity, social cohesion, culture and values.     

Fingerprint Change: Not Visible,But Tangible

Hand–foot syndrome, a chemotherapy‐induced cutaneous toxicity, can cause an alteration in fingerprints causing a setback for cancer patients due to the occurrence of false rejections. A colon cancer patient was fingerprinted after not having been able to use fingerprint recognition devices after 6 months of adjuvant chemotherapy. The fingerprint images were digitally processed to improve fingerprint definition without altering the papillary design. No evidence of skin toxicity was present. Two months later, the situation returned to normal. The fingerprint evaluation conducted on 15 identification points highlighted the quantitative and qualitative fingerprint alteration details detected after the end of chemotherapy and 2 months later. Fingerprint alteration during chemotherapy has been reported, but to our knowledge, this particular case is the first ever reported without evident clinical signs. Alternative fingerprint identification methods as well as improved biometric identification systems are needed in case of unexpected situations.     

Role of preoperative 3-dimensional computed tomography reconstruction in depressed skull fractures treated with craniectomy: a case report of forensic interest

Patients affected by cranial trauma with depressed skull fractures and increased intracranial pressure generally undergo neurosurgical intervention. Because craniotomy and craniectomy remove skull fragments and generate new fracture lines, they complicate forensic examination and sometimes prevent a clear identification of skull fracture etiology. A 3-dimensional reconstruction based on preoperative computed tomography (CT) scans, giving a picture of the injuries before surgical intervention, can help the forensic examiner in identifying skull fracture origin and the means of production.We report the case of a 41-year-old-man presenting at the emergency department with a depressed skull fracture at the vertex and bilateral subdural hemorrhage. The patient underwent 2 neurosurgical interventions (craniotomy and craniectomy) but died after 40 days of hospitalization in an intensive care unit. At autopsy, the absence of various bone fragments did not allow us to establish if the skull had been stricken by a blunt object or had hit the ground with high kinetic energy. To analyze bone injuries before craniectomy, a 3-dimensional CT reconstruction based on preoperative scans was performed. A comparative analysis between autoptic and radiological data allowed us to differentiate surgical from traumatic injuries. Moreover, based on the shape and size of the depressed skull fracture (measured from the CT reformations), we inferred that the man had been stricken by a cylindric blunt object with a diameter of about 3 cm.     

Suicide by multidrug ingestion: hypothesis on the role played by the self-administration of activated charcoal

A fatal suicidal ingestion of drugs, together with activated charcoal, is reported. The death occurred 31 hours after the self-administration. The autopsy revealed a large amount of gastric content that appeared to be a compact mass of black color. Toxicologic analyses showed the presence of toxic levels of desalkylflurazepam and trazodone; metamizole and pridinol were also detected. The obtained results supported the hypothesis of a death due to acute intoxication delayed by the self-administration of activated charcoal, which elimination was probably hindered by the action of pridinol.