Acid alteration of several ignitable liquids of potential use in arsons

Ignitable liquids such as fuels, alcohols and thinners can be used in criminal activities, for instance arsons. Forensic experts require to know their chemical compositions, as well as to understand how different modification effects could impact them, in order to detect, classify and identify them properly in fire debris. The acid alteration/acidification of ignitable liquids is a modification effect that sharply alters the chemical composition, for example, of gasoline and diesel fuel, interfering in the forensic analysis and result interpretation. However, to date there is little information about the consequences of this effect over other accelerants of interests. In this research paper, the alteration by sulfuric acid of several commercial thinners and other accelerants of potential use in arsons is studied in-depth. For that purpose, spectral (by ATR-FTIR) and chromatographic (by GC–MS) data were obtained from neat and acidified samples. Then, the spectral and chromatographic modifications of each studied ignitable liquid were discussed, proposing several chemical mechanisms that explain the new by-products produced and the gradual disappearance of the initial compounds. Hydrolysis, Fischer esterification and alkylation reactions are involved in the modification of esters, alcohols, ketones and aromatic compounds of the studied ignitable liquids. This information could be crucial for correctly identifying these accelerants. Additionally, an exploratory analysis revealed that some of the most altered ignitable liquid samples might be very similar with each other, which could have impact on casework.     

Contribution to the Development of Guidelines in the Analysis of Biological Evidence in Sexual Assault Investigations

This investigation intends to study materials and techniques used for biological evidence collection in sexual assault cases and is divided into two stages: in stage one, methods for biological evidence collection (the single swab (including three variants) and the “double swab technique”) were compared; in stage two, swabs’ component material was compared. The sampling was composed of 42 heterosexual couples who provided mock samples. The collection methods in which the whole swab is covered by evidence presented significantly better outcomes (p < 0.001), such as the “double swab technique.” Additionally, nylon swabs proved to present significantly better features regarding the capacity of sample elution, providing significantly higher amounts of DNA (p ≤ 0.034). This study provides guidelines for better collection of biological evidence regarding the collection method using a swab and the proper swab material to utilize.     

Nondecision making and inertia in Portuguese health policy

Despite there having been a positive context for initiating health care reforms in Portugal in the past fifteen years (accompanied by political consensus on the nature of the structural problems within the health care system), there has been a lack of reform initiatives. We use a process-based framework to show how institutional arrangements have influenced Portuguese health care reform. Evidence is presented to demonstrate inertia and nondecision making in three critical areas of Portuguese health policy: clarifying the public-private mix in coverage and provision, creating financial incentives and motivation for human resources, and introducing changes in the pharmaceutical market. Several factors seem to explain these processes, namely, problems in the balance of power within the political system, which have contributed to a lack of proper policy discussion; a lack of pluralism in the formation of health care policies (with low participation from citizens and high mobilization among structural interest groups); and the low priority of health care in public sector reforms. Portuguese politicians should be aware of the pitfalls of the current political system that constrain participatory arrangements and pluralism in policy making. In order to pursue health care reform, future governments will need to counterbalance the strong influence of structural interest groups.     

17 STR data (AmpF/STR Identifiler and Powerplex 16 System) from Cabinda (Angola)

Allele frequencies for seventeen STRs included in the AmpF/STR Identifiler (CSF1PO, D2S1338, D3S1358, D5S818, D7S820, D8S1179, D13S317, D16S539, D18S51, D19S433, D21S11, FGA, TH01, TPOX, and VWA) and Powerplex 16 System (CSF1PO, D3S1358, D5S818, D7S820, D8S1179, D13S317, D16S539, D18S51, D21S11, FGA, Penta D, Penta E, TH01, TPOX, and VWA) were estimated from a sample of 110 unrelated individuals from Cabinda, Angola. Comparative analyses between our population data and other African databases, namely Promega's African-Americans, AB Applied Biosystems African-Americans and five other population samples gathered from the literature are also presented.     

Verhandlungssituationen in der EU: Eine theoriegeleitete Analyse der Gemeinsamen Fischereipolitik

Auf der Grundlage des akteurzentrierten Institutionalismus präsentiert der vorliegende Beitrag eine theoriegeleitete und empirisch angereicherte Analyse von Verhandlungsergebnissen in der EU am Beispiel der Gemeinsamen Fischereipolitik. Dabei fasst das zugrunde liegende Untersuchungsdesign die Verhandlungsergebnisse als die abhängige, die Präferenzen der Mitgliedstaaten, die Präferenzen der Kommission sowie den institutionellen Rahmen als die unabhängigen Variablen auf. Dieses Untersuchungsdesign wird dann empirisch an zwei wichtigen Verhandlungssituationen überprüft, die gleichzeitig mit der Kompetenzübertragung der Fischereipolitik auf die europäische Ebene einhergehen. In der ersten Verhandlungssituation geht es um die Einführung der Strukturpolitik und der Gemeinsamen Marktorganisation für den Fischereisektor im Jahr 1970. Bei der zweiten Verhandlungssituation steht die Einführung der Bestanderhaltungspolitik für die Fischbestände im Jahr 1983 im Mittelpunkt. Zusätzlich zu den Verhandlungspositionen der Regierungen der Mitgliedstaaten wird in diesem Beitrag anhand der Rolle der Kommission und der formellen (Einstimmigkeitsprinzip) und informellen Regeln (Schatten der Zukunft) gezeigt, wie sich diese Variablen auf die Politikergebnisse auswirken.     

Genetic profile of the Madeira Archipelago population using the new PowerPlex16 System kit

Allele and haplotype frequencies of 17 chromosome STR loci, 15 of them included in the kit PowerPlex 16 System from Promega, were determined in a sample of unrelated males from Madeira and Porto Santo Islands. PowerPlex 16 includes STRs not studied before in the Madeira population. The-kit includes two new allele markers (Penta D and Penta E), which proved to be extremely useful for paternity testing (PD = 0.952 and 0.977, respectively). The study revealed that the Madeira population does not differ from that of the north Portugal. Nevertheless, some loci presented alleles found in sub-Saharan and North European populations which were not reported so far in Portugal.     

Combating crime and citizen attitudes: A study of the corresponding reality

The effectiveness of crime deterrence projects such as increased street lighting in ghetto environments has been questioned. The present study not only examines whether increased street lighting in fact reduces crime, but also investigates the attitudes towards local government of citizens who live within that particular environment. The findings illustrate that it would be advisable for governments to address citizen attitudes before undertaking certain crime prevention projects.