El vicario judicial y el instructor en los procesos de nulidad matrimonial tras el motu proprio Mitis Iudex

Este trabajo tiene por objeto el análisis de la figura del vicario judicial y del instructor en los procesos de nulidad matrimonial, tras las modificaciones introducidas por el motu propio Mitis Iudex. Se recorren los diversos momentos del proceso, centrando la atención en la función del vicario judicial en cada una de ellos: admisión de la demanda, notificación, determinación de la fórmula de dudas, decisión acerca del procedimiento que corresponda, ejecución de la sentencia. Se dedica una atención específica al proceso más breve ante el obispo –relevante novedad de la reforma del papa Francisco– y se tiene en cuenta las primeras experiencias de su aplicación por parte de los tribunales eclesiásticos. En el último punto se trata de la figura del instructor.This paper analyzes the figures of Judicial Vicar and Instructor in the marriage annulment process, in light of the amendments enacted by Mitis Iudex. The various stages of the process are discussed, focusing on the role of the Judicial Vicar in each: admission of the application, notification, determining the formula of doubt, decision about the appropriate procedure, execution of the judgment. Special attention is paid to the abbreviated process before the bishop, the key novelty brought about by the Pope Francis reform; and the first instances of its application in ecclesiastical courts are taken into account. The final part of the paper addresses the role of the Instructor

Numerical simulation of a 3-D gas-solid fluidized bed: Comparison of TFM and CPFD numerical approaches and experimental validation

This paper presents the results of a 3-D numerical simulation of a freely bubbling fluidized bed, based on the Eulerian¿Lagrangian approach, using the software Barracuda (CPFD-Barracuda). The main results obtained were assessed in terms of frequency analysis, bubble pierced length, bubble size, bubble passage frequency and bubble velocity. The results obtained were also compared with experimental data obtained in a 3-D fluidized bed using pressure and optical probes, and with the numerical results using the more common Eulerian-Eulerian approach, implemented in the commercial software Fluent (TFM-Fluent). The results show that CPFD-Barracuda satisfactorily predicts the global behaviour of bubbling beds with a low computational cost, although it computes smaller bubble sizes and lower bubble velocities than TFM-Fluent and experiments. Additionally, the spectra of pressure and particle volume fraction obtained with CPFD-Barracuda resemble those from the experiments and the TFM-Fluent simulations, but with a larger contribution of lower frequencies. The peaks of the pressure spectra from CPFD-Barracuda are close to those from the experiments and the TFM-Fluent simulations, whereas those in the solid volume spectra seem to be underestimated by CPFD-Barracuda. The results also indicate that the particle fraction threshold value chosen to distinguish bubbles contours notably influences the results of the bubble characteristics, especially for TFM-Fluent, whereas CPFD-Barracuda is less sensitive to this threshold value.This work was partially funded by the Ministerio de Economía y Competitividad (Projects ENE2016-78908-R and RTI2018-096664- B-C21 (MICINN, FEDER/UE)) of the Spanish Government, the Regional Government of Castilla-La Mancha (project SBPLY/17/180501/000412) and the Ministerio de Ciencia, Innovación y Universidades - Agencia Estatal de Investigación (AEI) (RED2018-102431-T)

Nuclear spin coherence in a quantum wire

We have observed millisecond-long coherent evolution of nuclear spins in a quantum wire at 1.2 K. Local, all-electrical manipulation of nuclear spins is achieved by dynamic nuclear polarization in the breakdown regime of the Integer Quantum Hall Effect combined with pulsed Nuclear Magnetic Resonance. The excitation thresholds for the breakdown are significantly smaller than what would be expected for our sample and the direction of the nuclear polarization can be controlled by the voltage bias. As a four-level spin system, the device is equivalent to two qubits.Comment: 5 pages, 5 figure

Flow and heat transfer analysis of a gas-particle fluidized dense suspension in a tube for CSP applications

This work presents a numerical study of the flow of particles in a gas–particle fluidized dense suspension for CSP applications using the Multi-Phase Particle in Cell (MP-PIC) method, implemented in CPFD-Barracuda software. The study covers two different numerical simulations. The first is a cold and isothermal model in which the fluctuations and control of the mass flow of particles ascending along the vertical tube was studied. In the second, a high-temperature boundary condition was imposed on the external surface of the tube and the energy equation was solved. In this second case, the heat transfer coefficient between the inner surface of the tube and the particles was numerically computed. The numerical results in the cold model are highly consistent with experimental data available in the literature (with values up to 150 kg/h and differences of approximately ±10 kg/h) and underline the significant impact of the pressure at the bottom of the bed and of the aeration flow rate on the mass flow of particles. The results of the non-isothermal case present heat transfer coefficients in the range of 300–400 W∕(m2 K) with transient fluctuations during the fluidization process. These fluctuations may be an influence on the mechanical damage of the tube, which is exposed to high levels of concentrated irradiation.This work was partially funded by the project PID2021-127322OB-I00, funded by the Ministerio de Ciencia e Innovación MICIN/AEI/10.13039/501100011033/ and by FEDER Una manera de hacer Europa; Project SBPLY/21/180501/000017, funded by the Regional Government of Castilla-La Mancha and by FEDER Una manera de hacer Europa; Project RED2018-102431-T, funded by the Ministerio de Ciencia, Innovación y Universidades - Agencia Estatal de Investigación (AEI) and Project 2020-GRIN-28725, funded by Universidad de Castilla-La Mancha

A new strategy to design SIW-fed arrays

In this work, a new full-wave strategy, with very low iteration times, is proposed for the optimization and design of antenna arrays fed by substrate integrated waveguides. The device is decomposed into fixed and modifiable (to be optimized) sections, whose generalized scattering matrices are precomputed. The response of the array is calculated by considering firstly only the interactions between the fixed sections, which are then coupled to the modifiable ones in each iteration of an optimization process. To validate the proposed strategy, a transversal 16-slot antenna array, placed on the top plate of a substrate integrated waveguide, has been designed. A speed-up factor of over 2000 times, compared to general purpose commercial software, has been obtained in this optimization process. The final design presents a 1.05 GHz bandwidth under - 10 dB in terms of |S11|, a maximum realized gain of 17.5 dBi at 17 GHz, and a 99.95% maximum efficiency (without dielectric and conductor losses). Index Terms—Addition theorems, cylindrical modes, spherical modes, optimization process, antenna array, substrate integrated waveguide (SIW)

Análisis del funcionamiento de una red colectiva ante distintas estrategias de riego en parcela

En zonas colectivas de riego, la tarifa a pagar por los agricultores está muy condicionada con el gasto energético de los equipos de bombeo, relacionada a su vez con la cantidad de agua aplicada a los cultivos. Así pues, es necesario el desarrollo de herramientas de ayuda a la toma de decisiones que busquen mejorar la eficiencia en el uso del agua y la energía, sin comprometer el rendimiento y productividad de los cultivos. El objetivo del trabajo es analizar el consumo energético en una estación de bombeo de una red colectiva de riego a la demanda ante distintos escenarios de riego en parcela y de presiones en la cabecera. La metodología propuesta ha sido aplicada a la zona regable de Tarazona de La Mancha (Albacete, España). Se han establecidos dos manejos de riego en parcela (con y sin déficit) para los principales cultivos de la zona y diferentes estrategias de presiones en la cabecera (variable y fija), para analizar el efecto sobre la eficiencia y consumo energético del bombeo. Para ello, se ha utilizado una herramienta de simulación desarrollada en MATLAB®, en combinación con el motor de cálculo EPANET®, y se ha aplicado como ejemplo a un día de elevada demanda de agua en la red. Los resultados indican que la utilización de presión en cabecera variable y manejo deficitario, genera ahorros energéticos de 12,43% en relación al mismo manejo con presión fija

Real-Time Implementation of qZSC for MVDC to Microgrids Link

Nowadays, power systems require new solutions to integrate renewable energies. In this paper, microgrids linked to MVDC are proposed through quasi-impedance-source converters to improve system reliability. Several prototypes are implemented using real-time platforms to analyze the system behavior, but the real-time implementation of the shoot-through state of the qZSC requires a very low time-step and sample time, which is not easy to achieve. The results obtained with these prototypes are included. Finally, a satisfactory solution is presented, implementing the power system in Typhoon HIL-402, the qZSC control in dSPACE MicroLabBox, and generating the gate signals in the FPGA included in the MicroLabBox platform. © 2022, European Association for the Development of Renewable Energy, Environment and Power Quality (EA4EPQ). All rights reserved