El dimicilio en la Ley de Impuestos sobre la Renta

El domicilio relaciona juridicamente a una persona con un lugar determinado. Este lugar es áquel donde habitualmente se encuentra la persona y en donde tiene sus principales intereses familiares y económicos; es donde ejerce sus derechos públicos y privados y en él arraiga de manera especial sus relaciones juridicas

Influence of bi content on the temperature of the formation of the hard magnetic MnBi phase: simultaneous irreversible drop of resistance

Pulsed laser-deposited (PLD) MnBi films were fabricated by alternating deposition of Mn and Bi layers. In order to obtain the ferromagnetic MnBi phase, heat treatments were performed on the samples. Simultaneously, the resistance of the samples was monitored as a function of the temperature. Thus, on increasing the temperature, a steep decrease in the resistance of the films was observed, simultaneous to the onset of the formation of the MnBi phase. At room-temperature, these annealed samples showed a ferromagnetic behavior, as well as the presence of the characteristic LT-MnBi phase diffraction peaks in the X-ray diffraction patterns. The temperature of the generation of the MnBi phase depended on the relative concentration of Mn and Bi in the different samples: on increasing the Bi atomic concentration, the temperature of the generation of the MnBi phase decreased

Contactless Rotor Ground Fault Detection Method for Brushless Synchronous Machines Based on an AC/DC Rotating Current Sensor

Brushless synchronous machines (BSMs) are replacing conventional synchronous machines with static excitation in generation facilities due to the absence of sparking and lower maintenance. However, this excitation system makes measuring electric parameters in the rotor challenging. It is highly difficult to detect ground faults, which are the most common type of electrical fault in electric machines. In this paper, a ground fault detection method for BSMs is proposed. It is based on an inductive AC/DC rotating current sensor installed in the shaft. In the case of a ground fault in the rotating parts of the BSM, a fault current will flow through the rotor’s sensor, inducing voltage in its stator. By analyzing the frequency components of the induced voltage, the detection of a ground fault in the rotating elements is possible. The ground faults detection method proposed covers the whole rotor and discerns between DC and AC sides. This method does not need any additional power source, slip ring, or brush, which is an important advantage in comparison with the existing methods. To corroborate the detection method, experimental tests have been performed using a prototype of this sensor connected to laboratory synchronous machines, achieving satisfactory results.This research was funded by Universidad Politécnica de Madrid under grant number RP2304330031

Magnetic anisotropy in isotropic and nanopatterned strongly exchange-coupled nanolayers

UPNa. Departamento de Física. Laboratorio de MagnetismoIn this study, the fabrication of magnetic multilayers with a controlled value of the in-plane uniaxial magnetic anisotropy field in the range of 12 to 72 kA/m was achieved. This fabrication was accomplished by the deposition of bilayers consisting of an obliquely deposited (54A degrees) 8-nm-thick anisotropic Co layer and a second isotropic Co layer that was deposited at a normal incidence over the first layer. By changing the thickness value of this second Co layer (X) by modifying the deposition time, the value of the anisotropy field of the sample could be controlled. For each sample, the thickness of each bilayer did not exceed the value of the exchange correlation length calculated for these Co bilayers. To increase the volume of the magnetic films without further modification of their magnetic properties, a Ta spacer layer was deposited between successive Co bilayers at 54A degrees to prevent direct exchange coupling between consecutive Co bilayers. This step was accomplished through the deposition of multilayered films consisting of several (Co8 nm-54A degrees/Co (X nm-0A degrees)/Ta6 nm-54A degrees) trilayers.This work was partially supported by the Spanish government under project MAT2007-66252

Impact of BMGIM Music Therapy on Emotional State in Patients with Inflammatory Bowel Disease: A Randomized Controlled Trial

Background. Patients with inflammatory bowel disease (IBD) have a high prevalence ofemotional disturbances which worsen the symptoms of the disease. As a therapeutic alternative thatis part of a comprehensive care alongside medication, the Bonny Method of Guided Imagery andMusic (BMGIM) music-assisted therapy has achieved promising emotional improvements in patientswith chronic diseases. The objective of the study was to determine the impact of a treatment based ona BMGIM group adaptation on patients with inflammatory bowel disease (IBD) and their emotionalstate, therefore analyzing state of mind, quality of life, anxiety, depression, immunocompetence as amarker of well-being, and levels of acute and chronic stress. Methods. Longitudinal, prospective,quantitative, and experimental study including 43 patients with IBD divided into an interventiongroup (22 patients), who received eight sessions over eight weeks, and a control group (21 patients).A saliva sample was taken from each patient before and after each session in order to determinecortisol and IgA levels. Similarly, a hair sample was taken before the first and after the last session todetermine the cumulative cortisol level. All molecules were quantified using the ELISA immunoassaytechnique. In addition, patients completed several emotional state questionnaires: HADS, MOOD,and CCVEII. Results. An improvement was observed in the following states of mind: sadness, fear,anger, and depression. No significant effect was observed in state of mind in terms of happinessor anxiety, in the levels of cortisol in hair, and in patients’ perceived quality of life. A reduction incortisol was observed in saliva, although this did not significantly affect the IgA titer. Conclusions.BMGIM seems to improve the emotional state of patients with IBD.Medicin

Exercise Ventilatory Inefficiency in Post-COVID-19 Syndrome: Insights from a Prospective Evaluation

The present study was partially granted by Gerencia Regional de Salud de Castilla y León under grant number GRS COVID 111/A/20 and a grant from the Spanish Society of Cardiology SEC/FEC-INVCLI 2.Introduction: Coronavirus disease 2019 (COVID-19) is a systemic disease characterized by a disproportionate inflammatory response in the acute phase. This study sought to identify clinical sequelae and their potential mechanism. Methods: We conducted a prospective single-center study (NCT04689490) of previously hospitalized COVID-19 patients with and without dyspnea during mid-term follow-up. An outpatient group was also evaluated. They underwent serial testing with a cardiopulmonary exercise test (CPET), transthoracic echocardiogram, pulmonary lung test, six-minute walking test, serum biomarker analysis, and quality of life questionaries. Results: Patients with dyspnea (n = 41, 58.6%), compared with asymptomatic patients (n = 29, 41.4%), had a higher proportion of females (73.2 vs. 51.7%; p = 0.065) with comparable age and prevalence of cardiovascular risk factors. There were no significant differences in the transthoracic echocardiogram and pulmonary function test. Patients who complained of persistent dyspnea had a significant decline in predicted peak VO2 consumption (77.8 (64–92.5) vs. 99 (88–105); p 50% of COVID-19 survivors present a symptomatic functional impairment irrespective of age or prior hospitalization. Our findings suggest a potential ventilation/perfusion mismatch or hyperventilation syndrome.Fac. de MedicinaTRUEJunta de Castilla y León. Gerencia Regional de Salud de Castilla y LeónSociedad Española de Cardiologíapu

The ABC130 barrel module prototyping programme for the ATLAS strip tracker

For the Phase-II Upgrade of the ATLAS Detector, its Inner Detector, consisting of silicon pixel, silicon strip and transition radiation sub-detectors, will be replaced with an all new 100 % silicon tracker, composed of a pixel tracker at inner radii and a strip tracker at outer radii. The future ATLAS strip tracker will include 11,000 silicon sensor modules in the central region (barrel) and 7,000 modules in the forward region (end-caps), which are foreseen to be constructed over a period of 3.5 years. The construction of each module consists of a series of assembly and quality control steps, which were engineered to be identical for all production sites. In order to develop the tooling and procedures for assembly and testing of these modules, two series of major prototyping programs were conducted: an early program using readout chips designed using a 250 nm fabrication process (ABCN-25) and a subsequent program using a follow-up chip set made using 130 nm processing (ABC130 and HCC130 chips). This second generation of readout chips was used for an extensive prototyping program that produced around 100 barrel-type modules and contributed significantly to the development of the final module layout. This paper gives an overview of the components used in ABC130 barrel modules, their assembly procedure and findings resulting from their tests.Comment: 82 pages, 66 figure