Voltammetric determination of cocaine in confiscated samples using a cobalt hexacyanoferrate film-modified electrode

In this work, a fast, non destructive voltammetric method for cocaine detection in acetonitrile medium using a platinum disk electrode chemically modified with cobalt-hexacyanoferrate (CoHCFe) film is described. The deposition of CoHCFe film at platinum disk (working electrode) was carried out in aqueous solution containing NaClO₄ at 0.1 mol L⁻¹ as supporting electrolite. Stability studies of the film and subsequent voltammetric analysis of cocaine were made in acetonitrile medium with NaClO₄ at 0.1 mol L⁻¹ as supporting electrolite. A reversible interaction between cocaine and CoHCFe at the film produces a proportional decrease of original peak current, due to the formation of a complex between cocaine and cobalt íons, with subsequent partial passivation of the film surface, being the intensity of current decrease used as analytical signal for cocaine. A linear dependence of cocaine detection was carried out in the range from 2.4 × 10⁻⁴ to 1.5 × 10⁻³ mol L⁻¹, with a linear correlation coefficient of 0.994 and a detection limit of 1.4 × 10⁻⁴ mol L⁻¹. The analysis of confiscated samples by the proposed method indicated cocaine levels from 37% to 95% (m/m) and these results were validated by comparison to HPLC technique, being obtained good correlation between both methods.     

Arms Transfers beyond the State-to-State Realm

Arms transfers beyond the state-to-state realm can have harmful effects for international security dramatically affecting the relations and behavior of states. This article examines why an emerging international norm on "prohibiting states to transfer arms to nonstate groups" has failed to diffuse at the international level. It discusses the already available international law framework existing at the regional and international levels upon which the potential norm could be built. The failure of the norm to diffuse at the international level can be primarily explained by the existence of a long-consolidated norm: the customary practice of states to transfer weapons to nonstate actors, that is, groups they deem legitimate to, without any interference or constraint. ¹ The unrestrained transfer of weapons is an established foreign-policy practice. It is the way states form, uphold alliances, extend friendships, and build spheres of influence ( Sorokin 1994 ). Clearly, no state willingly wants to give this up. Therefore, the multilateral agreement on a norm barring most or all transfers of weapons to nonstate actors would curtail the freedom of action to build spheres of influence as states please. There are genuine ethical and moral dilemmas in this discussion, a nonstate actor may be a freedom fighter or a terrorist depending on different perspectives. The distinction between the categories "state" and "nonstate" actors may risk classifying actors in two camps: the good and the bad, respectively. This is problematic as a few states are known to be the most brutal perpetrators of egregious violations against their own citizens, whereas certain nonstate actors are legitimately fighting for the protection of vulnerable populations.     

Bridging the Digital Divide

Beijing Review:The roundtable is called Spanish and Chinese Companies:Global Partners in a New Economic Model—what is this new economic model about?Jenaro Garcia:Society has three main pillars:civil society,administration and companies.Until now,governments thought they needed to provide for their citizens like small children,and that people did not know how to provide for themselves.My belief is that new technologies are giving power to citizens and governments and     

The Coexistence of Different Welfare Regimes in the Same Country: A Comparative Analysis of the Brazilian Municipalities Heterogeneity

Abstract

This paper demonstrates that heterogeneous countries such as Brazil have vast differences in welfare arrangements at the sub-national level. A number of social policies (social insurance, education, health and social assistance) were analysed in 5,565 Brazilian municipalities along five dimensions: expenditure, coverage, share of private spending, family structure and poverty. The grade of membership method was used to cluster municipalities and identify the main differences in their welfare regimes. Factor analysis was also used to explore which dimensions are most relevant in characterizing these sub-national regimes. The results show highly heterogeneous institutional forms of social protection across municipalities, which are classified as social assistance, quasi-social assistance, corporative, quasi-corporative, family insurance and intermediary welfare regimes.     

Narrators’ perspectives: communicating the EU in Ukraine,Israel and Palestine in times of conflict

ABSTRACT

The role of newsmakers as intermediaries in the shaping of external perceptions and reception of narratives advanced by different actors remains sparse in EU studies. This contribution fills this gap and addresses the personal images of the EU of newsmakers. We contribute to the understanding of those personal perceptions and their link to professional values of audience interest, newsworthiness and objectivity in reporting the EU. The article will demonstrate that all journalists perceive EU coverage in their respective locations are led by local priorities. Negative views of the EU as a weakening, biased, ineffective, elitist and arrogant actor are dominant. Arguably, they create conditions for the birth and dissemination of Euro-distant and even Euro-sceptic media narratives. The article will explain why this is the case while drawing on political/ideational and business/financial explanations.     

Journalism as “Prostitution”: Understanding Russia's Reactions to Anna Politkovskaya's Murder

When the Russian journalist Anna Politkovskaya was gunned down in her apartment building in Moscow in October 2006, heads of Western governments and nongovernmental organizations hurried to make strong statements condemning the murder, and public rallies in Politkovskaya's honor were held in front of Russian embassies across the world. In contrast to this swift and unequivocal response, the reaction of Russian officials, journalists, and the public at large was delayed, lukewarm, or nonexistent, much to the incomprehension of Western observers. To understand why the majority of Russian citizens were unmoved by Politkovskaya's murder, this article will contend, we need to understand the specific history of media-political transformation in Russia over the past decade and a half. This includes (a) approaching Soviet journalism as a unique nexus of ethics and politics, (b) studying the centrifugal forces unleashed during Russia's media privatization in the 1990s, and (c) understanding how those forces (in tension with the centering pull under Putin) have been shaping the practices and meaning of journalism in post-Soviet Russia over the past decade and a half. Such context-sensitive and historically contingent exploration will, in turn, suggest new theoretical tools for thinking about journalistic action, or agency, in political contexts short of classical liberalism more broadly.     

The social factory of democracy in underdeveloped Spain

This article aims to analyse the contribution made by Christian movements towards constructing a democratic citizenship in an authoritarian context in the backward province of Albacete. Our study attempts to analyse the efforts made by grassroots Catholic sectors to foster democratic enclaves free from the interference of the Francoist state in 1960s and 1970s Spain. These alternative social spaces enabled new habits of civil resistance that confronted the socio-cultural hegemony of authoritarian values. As a result, throughout these years, various social groups started to challenge the sense of the regime's impregnable unity. This grassroots experience with the “power of the powerless” laid the foundations for negotiations among the political elites during the transition to democracy in Spain.