Fluorescence of a Natural Fluorophore as a Key to Improve Fingerprint Contrast Image

The optical and morphological properties of resveratrol were investigated. This nontoxic fluorescent natural material, emitting in the visible blue light, was used as an optical marker, enabling the enhancement of the image contrast coming from relief pictures marked on challenging surfaces. By applying appropriated imaging softwares, this marker was verified to be very useful in the latent fingerprint recognition deposited on different wood surface types, mainly those with high level of roughness, where conventional forensic materials do not allow effective fingerprint image visualization.     

Covid-19 Pandemic,Social Mitigation and Taxation: The Open Veins of Inequality in Latin America

The pandemic of Covid-19 has exposed the veins of inequality in Latin America. With a socioeconomic disaster looming, social emergency policies seemed inevitable. Yet while governments argue over the continuity of such policies and whether the fiscal rules in place should be respected, no sustainable response has come out. This essay problematises whether the pandemic could represent a critical juncture to forge ahead with political narratives that highlight tax exemptions and privileges enjoyed by the rich. We analyse the mitigation measures adopted by Argentina, Brazil, Chile and Uruguay and their repercussions on the debate surrounding progressive tax reforms to fund social schemes.     

The politics of return: exploring the future of Syrian refugees in Jordan,Lebanon and Turkey

Abstract

Although the Syrian conflict continues, local and global stakeholders have already begun to consider the return of the six million refugees, especially as neither the option of local integration in the countries of first asylum nor that of resettlement to third countries is seen as a realistic possibility. Elaborating on the return debates in Turkey, Lebanon and Jordan, we relate the politicisation of this question to the growing acceptance of the option of voluntary and involuntary repatriation in the international refugee regime as well as to policies and public opinion. We argue, based on empirical fieldwork, that any debate about the return of Syrian refugees is problematic, since the conditions of safety, voluntariness and sustainability are not fulfilled. Further, returns should not be left entirely to the individual hosting states and actors in the region but should be carried out in collaboration with representative authorities in Syria and the mediation of international organisations upon full resolution of conflict.     

Analysis of STR loci in Cartagena, a Caribbean city of Colombia

Allele frequencies, together with some parameters of forensic interest were estimated for nine STRs included in the AmpF/STR Profiler kit (CSF1PO, D3S1358, D5S818, D7S820, D13S317, FGA, TH01, TPOX and vWA) in a sample of 215 unrelated individuals from Cartagena (Colombia). For all loci, no significant deviations from Hardy-Weinberg equilibrium were observed. Comparative analysis results between our data and those from other Colombian and African population samples revealed significant differences, except with two Colombian Caribbean Coast sub-regions.     

Analysis of Δ-tetrahydrocannabinol in oral fluid samples using solid-phase extraction and high-performance liquid chromatography–electrospray ionization mass spectrometry

An analytical method using solid-phase extraction (SPE) and high-performance liquid chromatography–mass spectrometry (LC–MS) has been developed and validated for the confirmation of Δ⁹-tetrahydrocannabinol (THC) in oral fluid samples. Oral fluid was extracted using Bond Elut LRC-Certify solid-phase extraction columns (10 cm³, 300 mg) and elution performed with n-hexane/ethyl acetate. Quantitation made use of the selected ion-recording mode (SIR) using the most abundant characteristic ion [THC + H⁺], m/z 315.31 and the fragment ion, m/z 193.13 for confirmation, and m/z 318.00 for the protonated internal standard, [d₃-THC + H⁺]. The method proved to be precise for THC, in terms of both intra-day and inter-day analyses, with coefficients of variation less than 10%, and the calculated extraction efficiencies for THC ranged from 76 to 83%. Calibration standards spiked with THC between 2 and 100 ng/mL showed a linear relationship (r² = 0.999). The method presented was applied to the oral fluid samples taken from the volunteers during the largest music event in Portugal, named Rock in Rio-Lisboa. Oral fluid was collected from 40 persons by expectoration and with Salivette^®. In 55% of the samples obtained by expectorating, THC was detected with concentration ranges from 1033 to 6552 ng/mL and in 45% of cases THC was detected at concentrations between 51 and 937 ng/mL. However, using Salivette^® collection, 26 of the 40 cases had an undetectable THC.     

Contribution à une analyse narrative de la théorie institutionnelle

Conclusion Que faut-il penser de la co-existence de trois modèles différents pour interpréter l'élément central de la théorie institutionnelle de MacCormick? Cette pluralité de modèles n'est source de perturbations que pour ceux qui tiennent à défendre l'idée selon laquelle il n'y a qu'une seule forme possible de discours juridique. Dès qu'il est accepté — comme hypothèse de base — que les formes d'organisation de ce type de discours peuvent être multiples, la perspective est inversée.C'est le schéma explicatif — dit schéma narratif — qui est alors unique. Quant aux différentes variantes de la formule de MacCormick, elles représentent les altérations de cette définition en fonction de paramètres identifiables — et identifiés — comme le statut des différents actants et acteurs, la définition de l'objet de valeur final dont ils cherchent à s'emparer et les objets de valeur d'usage dont ils se servent.L'éclatement de la formule de Maccormick ne correspond alors plus à un rejet mais bien à une mise en question. Cette remise en question débouchant sur la reconnaissance de plusieurs schémas narratifs, nous devons nous demander dans quelle mesure notre perception de la phasep correspond à l'idée que s'en fait MacCormick. S'agit-il seulement de la procédure au sens juridique du mot ou de tout un ensemble d'actes permettant de persuader un destinateur comme un juge ou une administration de la coïncidence entre un parcours narratif effectif et le type idéal de parcours narratif qu'ils tirent de la lecture des normes juridiques?S'il s'agit bien de la procédure au sens juridique de ce mot, il faut alors préciser au terme de cette analyse sémio-narrative que l'ensemble des phénomènes pragmatiques — comme les interactions dans le cas d'une procédure orale — ne sont pris en compte ni par la formule de MacCormick, ni par la présente discussion mais qu'ils relèvent d'une recherche particulière sur cette dimension supplémentaire, certes compatible avec la théorie sémiotique mais pas avec la théorie institutionnelle de MacCormick. Pour conclure, nous dirons donc qu'il est possible d'intégrer certains éléments de cette dernière théorie dans un cadre plus général mais qu'elle sera vite transformée à la fois de l'intérieur par la reconnaissance d'une pluralité des formes du discours et de l'extérieur par son intégration partielle dans un schéma plus large qui vise à décrire un phénomène dans son intégralité.     

Persistent Harassment: Targets and Perpetrators Among Young Adults

In Portugal, stalking has recently been recognized as a crime. This study used an online survey to ask 3,367 college students about their experiences of persistent harassment and targets’ and perpetrators’ perceptions of fear and conduct legitimacy. Targets (34.5%) typically mentioned that they had experienced a frightening experience but considered it to have been wrong but not very serious. Perpetrators (8.9%) mostly perceived that their targets had not experienced fear and judged their own conduct to have been normal. Ordinal logistic regressions indicated that intimate partner stalking, targets’ fear, and threatening and violent behaviors predicted less conduct legitimization for both targets and perpetrators.     

Rethinking the Tunisian miracle: a party politics view

Five years on from the Tunisian revolution, Tunisia stands as the sole success story of the Arab Spring. The country since then has managed to adopt a pluralist and democratic constitution, and held three free and fair elections. Accordingly, in the eyes of several observers, Tunisia is now in the process of consolidating its new democracy. However, the reality on the ground seems much gloomier, as most recent opinion surveys suggest that there is a significant degree of dissatisfaction, not only with political parties and Parliament but also with the very institution of democracy. Nevertheless, what accounts for this change? After the collapse of the long-lasting and oppressive Ben Ali regime, how, just in five years, has Tunisians’ confidence in the democratic process changed? This article accounts for this state of affairs from a party politics view, arguing that political parties, which are the main protagonists of the consolidation process, fail to fulfill their role of acquiring legitimacy for the new regime. While party–state relations seem to be stabilized due to the inclusiveness of the constitution-making process, both inter-party relationships and the relationship between parties and society suffer from numerous flaws which, in turn, hamper the democratic consolidation process.     

The Limits of a Commitment? Public Responses to Asylum Policy in Sweden over Time

It is hardly an exaggeration to claim that one of the most turbulent political areas in recent years has been asylum policy, which has disclosed a rapidly increasing inflow of asylum seekers, and, in many countries, has been followed by fierce media discussion and political controversies. In Sweden, this development has been heated as the Swedish self‐image is one of providing generous policies, which is also reflected in terms of strong refugee policy. The article uses this example to explore assumptions about public responsiveness in previous policy feedback literature and to examine the link between citizens' attitudes towards immigration and changes in asylum policy output, measured as asylums granted, over time in the period 1990–2015. It focuses especially on the link through which citizens become aware of policy output, operationalized as media visualization, and find that including media reveals a suppressed relationship between policy output and public attitudes. The relationship is negative and thus confirms the assumptions of the thermostatic models. Second, the article shows that feedback is mediated by political orientation: People defining themselves politically as right‐oriented respond with negative feedback when the number of granted asylums increases, while left‐oriented people do not change their attitudes. Based on these findings it is concluded, first, that analyses of democratic responsiveness need to incorporate a clear measure of the link by which exogenous factors become visible. Second, the importance needs to be stressed of considering important cleavages in the population in order to display responsiveness processes fairly.