3,146 research outputs found

    Triaxial Angular Momentum Projection and Configuration Mixing calculations with the Gogny force

    Full text link
    We present the first implementation in the (β,γ)(\beta,\gamma) plane of the generator coordinate method with full triaxial angular momentum and particle number projected wave functions using the Gogny force. Technical details about the performance of the method and the convergence of the results both in the symmetry restoration and the configuration mixing parts are discussed in detail. We apply the method to the study of 24^{24}Mg, the calculated energies of excited states as well as the transition probabilities are compared to the available experimental data showing a good overall agreement. In addition, we present the RVAMPIR approach which provides a good description of the ground and gamma bands in the absence of strong mixing.Comment: 40 pages,14 figure

    Explosive Disintegration of a Massive Young Stellar System in Orion

    Full text link
    Young massive stars in the center of crowded star clusters are expected to undergo close dynamical encounters that could lead to energetic, explosive events. However, there has so far never been clear observational evidence of such a remarkable phenomenon. We here report new interferometric observations made with the Submillimeter Array (SMA) that indicate the well known enigmatic wide-angle outflow located in the Orion BN/KL star-forming region to have been produced by such a violent explosion during the disruption of a massive young stellar system, and that this was caused by a close dynamical interaction about 500 years ago. This outflow thus belongs to a totally different family of molecular flows which is not related to the classical bipolar flows that are generated by stars during their formation process. Our molecular data allow us to create a 3D view of the debris flow and to link this directly to the well known Orion H2_2 "fingers" farther outComment: Accepted by ApJ Letters The 3D movie can be found in: ftp://ftp.mpifr-bonn.mpg.de/outgoing/lzapata/movie.gi

    La antropología desde el derecho: derecho consuetudinario gallego y etnografía

    Get PDF
    RESUMEN]Estudio mediante el que se pretenden poner de manifiesto las necesarias interrelaciones que se producen entre la ciencia etnográfica y la jurídica, especialmente a los efectos de la posible determinación, conocimiento y estudio, tanto histórico como actual, de las diversas peculiaridades jurídicas de carácter consuetudinario existentes en el específico caso del ordenamiento jurídico civil gallego[ABSTRACT]With this essay we try to unveil some necessary interrelations between ethnographic enquiries and legal studies. They are especially relevant to disclose the customary features of the present Galician civil law. This is done taking into account the meaning of ethnographic results and historical analysis for legal scholar

    A possible flyby anomaly for Juno at Jupiter

    Full text link
    [EN] In the last decades there have been an increasing interest in improving the accuracy of spacecraft navigation and trajectory data. In the course of this plan some anomalies have been found that cannot, in principle, be explained in the context of the most accurate orbital models including all known effects from classical dynamics and general relativity. Of particular interest for its puzzling nature, and the lack of any accepted explanation for the moment, is the flyby anomaly discovered in some spacecraft flybys of the Earth over the course of twenty years. This anomaly manifest itself as the impossibility of matching the pre and post-encounter Doppler tracking and ranging data within a single orbit but, on the contrary, a difference of a few mm/s in the asymptotic velocities is required to perform the fitting. Nevertheless, no dedicated missions have been carried out to elucidate the origin of this phenomenon with the objective either of revising our understanding of gravity or to improve the accuracy of spacecraft Doppler tracking by revealing a conventional origin. With the occasion of the Juno mission arrival at Jupiter and the close flybys of this planet, that are currently been performed, we have developed an orbital model suited to the time window close to the perijove. This model shows that an anomalous acceleration of a few mm/s(2) is also present in this case. The chance for overlooked conventional or possible unconventional explanations is discussed. (C) 2018 COSPAR. Published by Elsevier Ltd. All rights reserved.Acedo Rodríguez, L.; Piqueras, P.; Moraño Fernández, JA. (2018). A possible flyby anomaly for Juno at Jupiter. Advances in Space Research. 61(10):2697-2706. https://doi.org/10.1016/j.asr.2018.02.037S26972706611

    Evaluación de la ejecución motora en niños brasileños en edad escolar

    Get PDF
    Se ha evaluado mediante la batería de Tests Motores de Lincoln-Oseretsky la ejecución motora en un grupo de 1.232 estudiantes de edades comprendidas entre 5 y 16 años provenientes del sistema de enseñanza del municipio de Aracajú (Brasil). Los resultados obtenidos ponen de manifiesto una progresión en el desarrollo de las capacidades motoras, aunque con diferencias de género debidas tanto a factores biológicos como de carácter ambiental. Por otra parte, la edad motora resulta significativamente inferior a la edad cronológica en todas las franjas de edad estudiadas, siendo también inferior a la edad motora de una muestra equivalente de escolares europeos. Este hecho podría atribuirse, al menos parcialmente, a la ausencia de experiencias motoras suficientemente enriquecedoras tanto en el ambiente familiar como en el entorno escolar

    Numerical Simulation of the Stiffness Evolution With Curing of Pavement Sections Rehabilitated Using Cold In-Place Recycling Technology

    Get PDF
    Financiado para publicación en acceso aberto: Universidade da Coruña/CISUG[Abstract] Cold in-place recycling (CIR) technologies are becoming one of the main bets in the road sector to promote the reduction of greenhouse gas emissions. This technique also contributes to the circular economy, reusing 100% of the RAP from worn roads. In this research, numerical simulations of CIR sections are presented. The nonlinear behaviour of the CIR-base material is modelled using three predictive models based on triaxial test results. Variations in the performance depending on the type of subbase, the curing of the CIR-base material and its thickness, and the effect of the wearing-course were analysed. The response of the sections with unbound granular subbase proved to be very sensitive to variations in the parameters studied, and the increase in CIR base thickness was beneficial, while the opposite occurred with a cement-treated subbase.The authors would like to acknowledge funding for the project BIA2016-80317-R from the Spanish Ministry of Economy and Competitiveness (MINECO), with an associated pre-doctoral scholarship for the training of research workers (FPI) BES-2017-079633. An special acknowledgement to the Universidade da Coruña/ CISUG for funding Elsevier’s open access charg
    • …
    corecore