Politicisation and economic governance design

The functional pressures shaping policy design may be disrupted in salient policies and politicised contexts, according to recent postfunctionalist/new intergovernmentalist theories. We contrast these expectations with those derived from liberal intergovernmentalism and neofunctionalism by analysing the reforms of the European Union economic governance. Its Council-centred enforcement, which has been a dominant feature until the euro crisis, despite noncompliance, does not sit comfortably with traditional theories but can be explained by policy salience and implementation uncertainties. Instead, the emphasis that traditional approaches assign to noncompliance, commitment problems, threats of exclusion and veto, issue linkages, path dependencies and supranational decision-making, allows to adequately account for the overall direction of reforms toward more tightening and delegation, notwithstanding the pooled enforcement in recent ancillary measures. Postfunctionalist theories overall fall short in highly politicised contexts, exactly where they should do most of the explaining. We conclude discussing politicisation as a strategic elite response

All-carbon multi-electrode array for real-time in vitro measurements of oxidizable neurotransmitters

We report on the ion beam fabrication of all-carbon multi electrode arrays (MEAs) based on 16 graphitic micro-channels embedded in single-crystal diamond (SCD) substrates. The fabricated SCD-MEAs are systematically employed for the in vitro simultaneous amperometric detection of the secretory activity from populations of chromaffin cells, demonstrating a new sensing approach with respect to standard techniques. The biochemical stability and biocompatibility of the SCD-based device combined with the parallel recording of multi-electrodes array allow: i) a significant time saving in data collection during drug screening and/or pharmacological tests over a large number of cells, ii) the possibility of comparing altered cell functionality among cell populations, and iii) the repeatition of acquisition runs over many cycles with a fully non-toxic and chemically robust bio-sensitive substrate.Comment: 24 pages, 5 figure

Universal definition of the non-conformal trace anomaly

We show that there exists a generalized, universal notion of the trace anomaly for theories which are not conformally invariant at the classical level. The definition is suitable for any regularization scheme and clearly states to what extent the classical equations of motion should be used, thus resolving existing controversies surrounding previous proposals. Additionally, we exhibit the link between our definition of the anomaly and the functional Jacobian arising from a Weyl transformation.Comment: 10 pages. Two comments added. Matches the published versio

Effects of High Charge Densities in Multi-GEM Detectors

A comprehensive study, supported by systematic measurements and numerical computations, of the intrinsic limits of multi-GEM detectors when exposed to very high particle fluxes or operated at very large gains is presented. The observed variations of the gain, of the ion back-flow, and of the pulse height spectra are explained in terms of the effects of the spatial distribution of positive ions and their movement throughout the amplification structure. The intrinsic dynamic character of the processes involved imposes the use of a non-standard simulation tool for the interpretation of the measurements. Computations done with a Finite Element Analysis software reproduce the observed behaviour of the detector. The impact of this detailed description of the detector in extreme conditions is multiple: it clarifies some detector behaviours already observed, it helps in defining intrinsic limits of the GEM technology, and it suggests ways to extend them.Comment: 5 pages, 6 figures, 2015 IEEE Nuclear Science Symposiu

Worldline approach to noncommutative field theory

The study of the heat-trace expansion in noncommutative field theory has shown the existence of Moyal nonlocal Seeley-DeWitt coefficients which are related to the UV/IR mixing and manifest, in some cases, the non-renormalizability of the theory. We show that these models can be studied in a worldline approach implemented in phase space and arrive to a master formula for the $n$-point contribution to the heat-trace expansion. This formulation could be useful in understanding some open problems in this area, as the heat-trace expansion for the noncommutative torus or the introduction of renormalizing terms in the action, as well as for generalizations to other nonlocal operators.Comment: 19 pages, version

Charge Transfer Properties Through Graphene for Applications in Gaseous Detectors

Graphene is a single layer of carbon atoms arranged in a honeycomb lattice with remarkable mechanical and electrical properties. Regarded as the thinnest and narrowest conductive mesh, it has drastically different transmission behaviours when bombarded with electrons and ions in vacuum. This property, if confirmed in gas, may be a definitive solution for the ion back-flow problem in gaseous detectors. In order to ascertain this aspect, graphene layers of dimensions of about 2x2cm$^2$, grown on a copper substrate, are transferred onto a flat metal surface with holes, so that the graphene layer is freely suspended. The graphene and the support are installed into a gaseous detector equipped with a triple Gaseous Electron Multiplier (GEM), and the transparency properties to electrons and ions are studied in gas as a function of the electric fields. The techniques to produce the graphene samples are described, and we report on preliminary tests of graphene-coated GEMs.Comment: 4pages, 3figures, 13th Pisa Meeting on Advanced Detector

Combined use of steady-state fluorescence emission and anisotropy of merocyanine 540 to distinguish crystalline, gel, ripple, and liquid crystalline phases in dipalmitoylphosphatidylcholine bilayers

The various lamellar phases of dipalmitoylphosphadtidylcholine bilayers with and without cholesterol were used to assess the versatility of the fluorescent probe merocyanine 540 through simultaneous measurements of emission intensity, spectral shape, and steady-state anisotropy. Induction of the crystalline phase (Lc') by pre-incubation at 4°C produced a wavelength dependence of anisotropy which was strong at 15 and 25°C, weak at 38°C, and minimal above the main transition (>~41.5°C) or after returning the temperature from 46 to 25°C. The profile of anisotropy values across this temperature range revealed the ability of the probe to detect crystalline, gel (Lβ'), and liquid crystalline (Lα) phases. The temperature dependence of fluorescence intensity was additionally able to distinguish between the ripple (Pβ') and gel phases. In contrast, the shape of the emission spectrum, quantified as the ratio of merocyanine monomer and dimer peaks (585 and 621 nm), was primarily sensitive to the crystalline and gel phases because dimer fluorescence requires a highly-ordered environment. This requirement also explained the diminution of anisotropy wavelength dependence above 25°C. Repetition of experiments with vesicles containing cholesterol allowed creation of a phase map. Superimposition of data from the three simultaneous measurements provided details about the various phase regions in the map not discernible from any one of the three alone. The results were applied to assessment of calcium-induced membrane changes in living cells

Implementación de microemprendimientos artesanales en base a energías alternativas como estrategias de vida

Se presentan avances de la implementación de tres microemprendimientos familiares basados en el uso de energía solar en producción alimentaria artesanal con volumen significativo en grupos muy pobres de la villa Los Bajos, Valle Viejo, Catamarca. El uso de concentradores solares permite un aprovechamiento significativo de energía colectable y gran versatilidad debido al amplio rango de temperaturas alcanzables compatible con la diversidad de comidas diarias y con las actividades propias de los microemprendimientos. Las capacitaciones para la formación de habilidades, actitudes y conocimientos se realizaron mediante talleres y espacios de trabajo por parte del equipo ejecutor. La apropiación de la tecnología por este grupo no planteó dificultades por la sencillez constructiva y operativa del kit proporcionado, pero demandó un involucramiento intensivo del recurso técnico y social para reducir factores de riesgo y viabilizar indicadores de éxito con los actores locales, quienes mutaron las acciones de sobrevivencia y uso de leña por estrategias de vida sustentables.This paper presents the accomplishment of three family micro enterprises based on solar cookers for craftsmen food production in poor families of Los Bajos, Valle Viejo, Catamarca. The training of abilities, attitudes and knowledge was carried out in workshops led by the executive team. Technology management was not difficult because of the simplicity of the kit available for the group, but technical and social resources intensive involvement was demanded in order to reduce the risk factors and to visualize the success indicators. The local actors changed the previous survival activities and the use of wood for sustainable living strategies.Asociación Argentina de Energías Renovables y Medio Ambiente (ASADES