363 research outputs found

    The European Parliament's Political Leadership: The Case Study of EU Foreign Policy towards Turkey

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    This article presents an empirical analysis of how the European Parliament's eighth legislature mobilised to shape European Union (EU) foreign policy towards Turkey during the refugee crisis. On a conceptual and methodological level, we propose an analytical framework based on the mechanism of political leadership to trace the EP's role in two specific areas of EU foreign policy towards Turkey: enlargement and cooperation on migration. We argue that EP foreign policy resources allow it to play a political leadership role in this policy domain. Empirically, the analysis feeds into the claim of New Institutional Leadership since it reveals that the informal governance at the time of the refugee crisis favoured the mobilisation of the EP, mainly to protect its institutional prerogatives. The analysis also shows that the EP adopted a contradictory approach to EU foreign policy towards Turkey that affected the Parliament's reputation as the guardian of EU values

    The European Parliament's Political Leadership: The Case Study of EU Foreign Policy towards Turkey

    Get PDF
    This article presents an empirical analysis of how the European Parliament’s eighth legislature mobilised to shape European Union (EU) foreign policy towards Turkey during the refugee crisis. On a conceptual and methodological level, we propose an analytical framework based on the mechanism of political leadership to trace the EP’s role in two specific areas of EU foreign policy towards Turkey: enlargement and cooperation on migration. We argue that EP foreign policy re sources allow it to play a political leadership role in this policy domain. Empirically, the analysis feeds into the claim of New Institutional Leadership since it reveals that the informal governance at the time of the refugee crisis favoured the mobilisation of the EP, mainly to protect its institutional prerogatives. The analysis also shows that the EP adopted a contradictory approach to EU foreign policy towards Turkey that affected the Parliament’s reputation as the guardian of EU values

    On the adoption of carbon dioxide thermodynamic cycles for nuclear power conversion: A case study applied to Mochovce 3 Nuclear Power Plant

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    In this study, closed CO2 cycles are investigated for potential application in existing nuclear power stations, referring in particular to Mochovce power station currently under construction in Slovak Republic. Three different CO2 cycles layouts are explored in the range of temperatures offered by the nuclear source and of the existing cooling towers. The investigation shows that the common opinion that S-CO2 cycles are well suited in the medium to a high temperature range only (higher than about 450 °C) seems unjustified. For a primary heat source with a maximum temperature of 299 °C and a heat sink with a minimum temperature of 19 °C and reasonable assumptions about advanced turbomachines and heat exchanger performances, the supercritical recompressed reheated regenerative CO2 cycle would yield a net efficiency of 34.04%, which compares well with the 33.51% net efficiency of the existing Rankine cycle. The estimated length of the complete turboset (2 turbines, 1 pump and 1 compressor) would be less than 11 m (versus two wet steam turbines of 22 m each for the same power), resulting in a factor of 10 reduction in the footprint of the balance of plant.The total CO2 cycle equipment and main pipelines would have a combined weight of 3957 tons, while in the Mochovce 3 NPP existing Rankine cycle, the main components and connecting piping weigh nearly 7377 tons, thus a 40% reduction.These results suggest that the adoption of CO2 in nuclear power stations would not penalize the plant efficiency and would yield significant savings on installation costs and construction times from the much more compact balance of plant

    Experimental Characterization of a Passive Emergency Heat Removal System for a GenIII + Reactor

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    Among the several types of passive safety systems adopted in new generation reactor designs, the experimental investigation of a closed loop, two-phase flow, natural circulation system is depicted. Emergency Heat Removal Systems (EHRSs) based on this solution are envisaged as safety-engineered features for advanced nuclear reactors, as in the IRIS reactor. An experimental facility simulating one EHRS-like loop has been built and operated at SIET labs in Piacenza (Italy). The facility is a natural circulation, sliding pressure, and electrically heated loop, with a helical coil steam generator as a heat source and a horizontal tube pool condenser as a heat sink. A steady-state analysis is provided to characterize the system behaviour and its key parameters. Because of the loop limited volume, oscillations of the main parameters (temperatures, flowrate, pressure) may be expected. The oscillating phenomena detected during the experimental campaign are discussed; a reasonable explanation is at last proposed

    Speckle-Tracking Imaging, Principles and Clinical Applications: A Review for Clinical Cardiologists

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    Evaluation of myocardial mechanics, although complex, has now entered the clinical arena, thanks to the introduction of bedside imaging techniques, such as speckle-tracking echocardiography

    Adipocytokine levels mark endothelial function in normotensive individuals

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    BACKGROUND: Endothelial dysfunction is an independent risk factor for cardiovascular events. Inflammatory mediators released by the adipose tissue can lead to local insulin resistance and endothelial dysfunction. This study addressed the relationship of adipocytokines with endothelial function and blood pressure. METHODS: In 92 newly diagnosed, drug-naïve essential hypertensive patients (HT, mean age 49 yrs) without organ damage and 66 normotensive subjects (NT, mean age 47 yrs), by an automated system, we measured endothelium-dependent and -independent vasodilation as brachial artery flow-mediated dilation before and after administration of glyceryl-trinitrate. Retinol binding protein-4 (RBP4) and resistin levels were determined by ELISA and RIA, respectively. Oxidative stress was evaluated by measuring serum malondyaldehyde (MDA). RESULTS: Flow-mediated dilation was significantly (p = 0.03) lower in HT (5.3 ± 2.6%) than NT (6.1 ± 3.1%), while response to glyceryl-trinitrate (7.5 ± 3.7% vs 7.9 ± 3.4%) was similar. RBP4 (60.6 ± 25.1 vs 61.3 ± 25.9 μg/ml), resistin (18.8 ± 5.3 vs 19.9 ± 6.1 ng/ml) and MDA levels (2.39 ± 1.26 vs 2.08 ± 1.17 nmol/ml) were not different in HT and NT. RBP4 (r = −0.25; p = 0.04) and resistin levels (r = −0.29; p = 0.03) were related to flow-mediated dilation in NT, but not in HT (r = −0.03 and r = −0.10, respectively). In NT, multivariate analysis including RBP4 and confounders showed that only BMI or waist circumference remained related to flow- mediated dilation. In the multivariate model including resistin and confounders, BMI, age and resistin were significantly related to flow-mediated dilation, while only age significant correlated with this parameter when BMI was replaced by waist circumference. CONCLUSIONS: Adipocytokine levels may be independent predictors of endothelial dysfunction in the peripheral circulation of healthy subjects, providing a pathophysiological link between inflammation from adipose tissue and early vascular alterations
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