Doppler-boosting emission from a high-mass gamma-ray binary with a non-accreting pulsar

Treballs Finals de Grau de Física, Facultat de Física, Universitat de Barcelona, Curs: 2018, Tutor: Valentí Bosch-RamonGamma-ray binaries are bright sources of [gamma]-ray emission in the Galaxy. Here, we study the Doppler-boosting effects on the radiation from these sources in a simplifed scenario. By modelling the structure of the shocked stellar and pulsar winds, we study the changes in the observed luminosity with variations in the orbital phase and in the angle with respect to the structure symmetry axis. The obtained results show how the orbital position of the pulsar, and the orientation of the observer, affect the radiation that can be observed

Adaptación y validación factorial de la Subjetive Exercise Experiences Scale (SEES)

En este trabajo se presenta la adaptación con una muestra española (n=243) de la Subjetive Exercise Experiences Scale (SEES; McAuley y Courneya, 1994). La SEES es un instrumento de medida de las respuestas pcicológicas globales a las propiedades estimulares del ejercicio físico compuesta por tres factores. Dos de estos factores se refieren a los polos positivos y negativos asociados a la salud psicológica: el bienestar psicológico (psychological well-being) y la falta de activación o distensión psicológica (psychological distress), el tercer factor representa a los indicadores subjetivos de la sensación de fatigaThis paper presents the results of the Subjetive Exercise Experience Scale (SEES; McAuley y Courneya, 1994) applied to a Spanish sample (n=243). The SEES is a measurement of global psychological response to the stimulus properties of physical exercise on three factors. Two of these factor refer to the positive and negative poles associated with mental health, psychological well-being, and psychological distress. The third factor represents a subjective index of fatigu

Colorectal cancer: immune response in laparoscopic versus open colorectal surgery

Introduction: Colorectal cancer is the second most frequent cause of deaths from cancer worldwide. Enhanced recovery protocols (ERPs) were developed in 90s to improve the recovery of these patients. Within ERPs, this work aims to compare immune responsebetweenopenandlaparoscopicprocedurestosupportthebestsurgicalapproach. Materialsandmethods:Theimmunestatus of 148 patients undergoing colorectal surgery (74 by laparoscopic and 74 by open surgery OS]) was studied in three moments: before surgery (POD0) and on the 1st and 3th post-operative days (POD1 and POD3). Results: Comparing to the laparoscopic group, in the OS group, C-reactive protein levels were significantly higher on POD1 and POD3 (p < 0.001), whereas lymphocyte levels were significantly lower (p = 0.006) and neutrophil levels were higher (p = 0.012) on POD1. On the other hand, higher levels of B cells (p = 0.023) were observed on POD1 in the laparoscopic group. Natural killer cell levels were significantly reduced (p = 0.034) in this group on POD3. Conclusions: Within the ERP, immune response pattern in both surgery approaches appears to be similar. Nevertheless, a greater inflammatory response of the OS is observed, whereas earlier recovery of the immune levels baseline seems to be a trend in the laparoscopic surgery

Variation over time of length–weight relationships and condition factors for four exotic fish species from a restored shallow lake in NE Iberian Peninsula

Length–weight relationships (LWRs), condition factors, and their variation over time were analyzed for four exotic freshwater fish (bleak, common carp, pikeperch, and roach) in the Estany d’Ivars i Vila-sana shallow lake in Catalonia, Northern Spain. Fish samples were collected twice a year (early summer and autumn), between 2008 and 2016, by using between three and five multi-mesh nylon gillnets. This study provides novel information about four common exotic fishes outside of their natural range and within the context of a restored shallow lake, where the ichthyologic community is evolving in concordance with the ecosystem conditions and the fish community dynamics.This research was partially funded by the Consorci de l’Estany d’Ivars i Vila‐sana and the Fundació Catalunya La Pedrera and supported by the Government of Catalonia (CERCA Programme)