87 research outputs found

    Press discourses on ecological crises in the UK, Israel, and Hungary

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    This article explores the relationships between political projects of belonging and approaches to environmental and climate ecological crises via comparing centre-right and centre-left newspapers in the UK, Israel and Hungary. Our theoretical framework draws on Nira Yuval-Davis's work on the politics of belonging as a way of understanding and framing the different political projects that accompany reporting on ecological issues. Focusing on selected national and international case studies on these issues at the centre of public debate during the last two decades, the paper explores and compares these relationships by examining the eco-relational, spatial, temporal and normative framing dimensions of the political projects of belonging as expressed in these articles. The findings of the analysis show that, despite different cultural and historical contexts, the most significant dividing line is not among countries but between the different political projects of belonging of the newspapers. This can be seen even when dealing with country-specific, rather than international, case studies. Overall, centre-right newspapers tend to focus on narrow nationalist interests concerning the climate crisis and do not produce discourses of urgency to resolve the crisis except when reporting on major international political agendas. They are also more inclined to focus on the economic aspects of such efforts and how they would affect the “people”. The centre-left press, on the other hand, tends to prioritise ecological issues much more; it has wider global and planetary interdependent constructions of belonging and engages in the production of discourses of urgency in an attempt to solve the crisis and avoid future catastrophes. However, even in the centre-left press, especially in the UK, a tendency to remain within a western-centric perspective was observed

    Rotation intrinsic spin coupling--the parallelism description

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    For the Dirac particle in the rotational system, the rotation induced inertia effect is analogously treated as the modification of the "spin connection" on the Dirac equation in the flat spacetime, which is determined by the equivalent tetrad. From the point of view of parallelism description of spacetime, the obtained torsion axial-vector is just the rotational angular velocity, which is included in the "spin connection". Furthermore the axial-vector spin coupling induced spin precession is just the rotation-spin(1/2) interaction predicted by Mashhoon. Our derivation treatment is straightforward and simplified in the geometrical meaning and physical conception, however the obtained conclusions are consistent with that of the other previous work.Comment: 10 pages, no figur

    Recombination of H3+ Ions in the Afterglow of a He-Ar-H2 Plasma

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    Recombination of H3+ with electrons was studied in a low temperature plasma in helium. The plasma recombination rate is driven by two body, H3+ + e, and three-body, H3+ + e + He, processes with the rate coefficients 7.5x10^{-8}cm3/s and 2.8x10^{-25}cm6/s correspondingly at 260K. The two-body rate coefficient is in excellent agreement with results from storage ring experiments and theoretical calculations. We suggest that the three-body recombination involves formation of highly excited Rydberg neutral H3 followed by an l- or m- changing collision with He. Plasma electron spectroscopy indicates the presence of H3.Comment: 4 figure

    Temperature dependence of binary and ternary recombination of H3+ ions with electron

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    We study binary and the recently discovered process of ternary He-assisted recombination of H3+ ions with electrons in a low temperature afterglow plasma. The experiments are carried out over a broad range of pressures and temperatures of an afterglow plasma in a helium buffer gas. Binary and He-assisted ternary recombination are observed and the corresponding recombination rate coefficients are extracted for temperatures from 77 K to 330 K. We describe the observed ternary recombination as a two-step mechanism: First, a rotationally-excited long-lived neutral molecule H3* is formed in electron-H3+ collisions. Second, the H3* molecule collides with a helium atom that leads to the formation of a very long-lived Rydberg state with high orbital momentum. We present calculations of the lifetimes of H3* and of the ternary recombination rate coefficients for para and ortho-H3+. The calculations show a large difference between the ternary recombination rate coefficients of ortho- and para-H3+ at temperatures below 300 K. The measured binary and ternary rate coefficients are in reasonable agreement with the calculated values.Comment: 15 page

    Temperature dependence of binary and ternary recombination of H3+ ions with electron

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    We study binary and the recently discovered process of ternary He-assisted recombination of H3+ ions with electrons in a low temperature afterglow plasma. The experiments are carried out over a broad range of pressures and temperatures of an afterglow plasma in a helium buffer gas. Binary and He-assisted ternary recombination are observed and the corresponding recombination rate coefficients are extracted for temperatures from 77 K to 330 K. We describe the observed ternary recombination as a two-step mechanism: First, a rotationally-excited long-lived neutral molecule H3* is formed in electron-H3+ collisions. Second, the H3* molecule collides with a helium atom that leads to the formation of a very long-lived Rydberg state with high orbital momentum. We present calculations of the lifetimes of H3* and of the ternary recombination rate coefficients for para and ortho-H3+. The calculations show a large difference between the ternary recombination rate coefficients of ortho- and para-H3+ at temperatures below 300 K. The measured binary and ternary rate coefficients are in reasonable agreement with the calculated values.Comment: 15 page

    Multiple ionization of argon via multi-XUV-photon absorption induced by 20-GW high-order harmonic laser pulses

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    We report the observation of multiple ionization of argon through multi-XUV-photon absorption induced by an unprecedentedly powerful laser driven high-order harmonic generation source. Comparing the measured intensity dependence of the yield of the different argon charge states with numerical calculations we can infer the different channels—direct and sequential—underlying the interaction. While such studies were feasible so far only with free electron laser (FEL) sources, this paper connects highly nonlinear XUV processes with the ultrashort time scales inherent to the harmonic pulses and highlights the advanced perspectives of emerging large scale laser research infrastructures

    Molecular excitation in the Interstellar Medium: recent advances in collisional, radiative and chemical processes

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    We review the different excitation processes in the interstellar mediumComment: Accepted in Chem. Re

    SzĂ­vinfarktus miatt kezelt betegek korai Ă©s kĂ©sƑi prognĂłzisa. Magyar Infarctus Regiszter VizsgĂĄlat

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    Introduction: Mortality data of patients with acute myocardial infarction are incomplete in Hungary. Aim: The aim of the authors was to analyse the data of 8582 myocardial infarction patients (4981 with ST-elevation myocardial infarction) registered in the Hungarian Myocardial Infarction Register in order to define the hospital, 30-day, and 1-year mortality. To evaluate the prehospital mortality of myocardial infarction, all myocardial infarction and sudden death were registered in five districts of Budapest. Method: Multivariate logistic regression was performed to define risk factors of mortality and the model were assessed using c statistics. Results: The hospital, 30-day and 1-year mortality of patients with ST elevation myocardial infarction were 3.7%, 9.5% and 16.5%, respectively. In patients without ST elevation myocardial infarction these figures were 4%, 9.8% and 21.7%, respectively. The 1-year mortality of patients without ST elevation was higher than those of with ST elevation and the difference was statistically significant. Age, Killip class, diabetes mellitus, history of stroke and myocardial infarction were independent predictors of death. Coronary intervention improved the prognosis of patients with myocardial infarction significantly. Conclusions: The rate of pre-hospital mortality was considerably high; 72.5% of 30 day mortality occurred before admission to hospital. Orv. Hetil., 2013, 154, 1297-1302
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