A note on the Gauge Symmetries of Unimodular Gravity

The symmetries of Unimodular Gravity are clarified somewhat.Comment: 4 pages, v2: acknowledgments correcte

Unimodular Gravity and General Relativity UV divergent contributions to the scattering of massive scalar particles

We work out the one-loop and order $\kappa^2 m_\phi^2$ UV divergent contributions, coming from Unimodular Gravity and General Relativity, to the S matrix element of the scattering process $\phi + \phi\rightarrow \phi + \phi$ in a $\lambda \phi^4$ theory with mass $m_\phi$. We show that both Unimodular Gravity and General Relativity give rise to the same UV divergent contributions in Dimension Regularization. This seems to be at odds with the known result that in a multiplicative MS dimensional regularization scheme the General Relativity corrections, in the de Donder gauge, to the beta function $\beta_{\lambda}$ of the $\lambda$ coupling do not vanish, whereas the Unimodular Gravity corrections, in a certain gauge, do vanish. Actually, we show that the UV divergent contributions to the 1PI Feynman diagrams which give rise to those non-vanishing corrections to $\beta_{\lambda}$ do not contribute to the UV divergent behaviour of the S matrix element of $\phi + \phi\rightarrow \phi + \phi$ and this shows that any physical consequence --such existence of asymptotic freedom due to gravitational interactions-- drawn from the value of $\beta_{\lambda}$ is not physically meaningful.Comment: 13 pages, 4 figure

Quantum Corrections to Unimodular Gravity

The problem of the cosmological constant appears in a new light in Unimodular Gravity. In particular, the zero momentum piece of the potential (that is, the constant piece independent of the matter fields) does not automatically produce a cosmological constant proportional to it. The aim of this paper is to give some details on a calculation showing that quantum corrections do not renormalize the classical value of this observable.Comment: 34 page

Short-Term Branched-Chain Amino Acid Supplementation Does Not Enhance Vertical Jump in Professional Volleyball Players. A Double-Blind, Controlled, Randomized Study

To the best of the author's knowledge, no previous studies have described the effect of branched-chain amino acids (BCAA) on vertical performance during a week in professional volleyball players. This study assessed BCAA supplementation for a week, aiming to improve vertical jump performance in male professional volleyball players. Twelve male volleyballers were randomly assigned to a BCAA group (n = 6) or a control group (n = 6). The BCAA group ingested 21 g over a week, 7 g per day on Monday, Wednesday, and Friday, before a volleyball training session, while the control group drank a placebo drink. Participants performed 8 maximal countermovement jumps (CMJ); the 3 CMJs on Monday and Wednesday were evaluated after warm-up, after plyometric training, and at the end of the training session; and the 2 CMJs on Friday were evaluated after warm-up, and at the end of the training session. Compared with baseline, no significant differences in CMJ over the week were observed in BCAA or control group, neither between groups. The results indicated that 21 g of BCAA supplementation over a week did not improve vertical jump performance in professional volleyball players.Hasta donde los autores saben, no se han descrito estudios previos sobre el efecto de los aminoácidos ramificados (BCAA) en el rendimiento vertical durante una semana en jugadores de voleibol profesionales. Este artículo estudió la suplementación de BCAA durante una semana con el objeto de mejorar el rendimiento del salto vertical en jugadores de voleibol profesionales masculinos. Doce jugadores de voleibol masculinos se asignaron aleatoriamente a un grupo con BCAA (n = 6) o a un grupo de control (n = 6). El grupo con BCAA ingirió 21 g en una semana, 7 g por día los lunes, miércoles y viernes antes de la sesión de entrenamiento de voleibol, mientras que el grupo de control bebió una bebida placebo. Los participantes realizaron 8 saltos máximos de contramovimiento (CMJ); los 3 CMJ de lunes y miércoles se evaluaron después del calentamiento y del entrenamiento pliométrico, y al final de la sesión de entrenamiento; los 2 CMJ del viernes se evaluaron después del calentamiento y al final de la sesión de entrenamiento. En comparación con el valor inicial, no se observaron diferencias significativas en los CMJ a lo largo de la semana, ni en el grupo BCAA ni en el grupo control, tampoco hubo diferencias entre grupos. Los resultados indicaron que 21 g de BCAA administrados durante una semana no mejoraron el rendimiento del salto vertical en jugadores de voleibol profesionale

Descriptive Analysis of Sports Tourists in Spain

Sports tourism is a decisive factor in geographical mobility for leisure purposes. These activities entail certain acts and consequences inherent in their execution, which are worthy of study from the perspective of sustainable and reasonable tourism. Previous studies tried to show the characteristics of this type of tourist but did not provide relevant information to offer the necessary services to provide, to understand their patterns of habits, and to be able to act correctly. This paper aims to study the profile of the sports tourism consumer. Data provided by the National Institute of Statistics for the year 2019 was analyzed, taking a sample of 1496 people for statistical analysis. From these statistical analyses, key information on consumer profiles can be gleaned. Findings showed that people with Spanish nationality predominate, being mainly men. Both sexes show that they are over 40 years of age, with higher education, mostly married, cohabitation with a partner with children at home, with permanent employment contracts and certain patterns of behavior such as the use of their private car, and staying mainly in hotels or aparthotels. Therefore, from the point of view of sustainable tourism, it is vital to draw up profiles and patterns of consumers of this tourism, to evaluate and study its ecological, environmental, and social impact, as well as taking the appropriate measures to balance the balance between sports tourism and sustainability.El turismo deportivo es un factor decisivo en la movilidad geográfica con fines de ocio. Estas actividades conllevan ciertos actos y consecuencias inherentes a su ejecución, que son dignos de estudio desde la perspectiva del turismo sostenible y razonable. Estudios anteriores trataron de mostrar las características de este tipo de turista pero no aportaron información relevante para ofrecer los servicios necesarios a prestar, para conocer sus patrones de hábitos y poder actuar correctamente. Este trabajo pretende estudiar el perfil del consumidor de turismo deportivo. Se han analizado los datos proporcionados por el Instituto Nacional de Estadística para el año 2019, tomando una muestra de 1496 personas para su análisis estadístico. De estos análisis estadísticos se puede extraer información clave sobre el perfil del consumidor. L os resultados mostraron que predominan las personas con nacionalidad española, existiendo una proporción mayor de hombres que de mujeres. De ambos sexos se desprende que son mayores de 40 años, con estudios superiores, mayoritariamente casados, con convivencia en pareja y con hijos en el hogar, con contratos laborales indefinidos y con ciertas pautas de comportamiento como el uso de su coche particular, y alojándose principalmente en hoteles o apartahoteles. Por lo tanto, desde el punto de vista del turismo sostenible, es vital elaborar perfiles y patrones de los consumidores de este turismo, para evaluar y estudiar su impacto ecológico, ambiental y social, así como tomar las medidas aptas para equilibrar la balanza entre el turismo deportivo y la sostenibilidad

Role of Exocrine and Endocrine Insufficiency in the Management of Patients with Chronic Pancreatitis

Background: Exocrine pancreatic insufficiency results from the destruction of the pancreatic parenchyma and is diagnosed by using direct or indirect tests, both of which have shortcomings. Chronic pancreatitis is the most frequent cause of this pathology in adults. Methods: Patients meeting radiological or histological diagnostic criteria of chronic pancreatitis are enrolled and the stool elastase test is conducted, considering fecal elastase levels >200 µg/g to represent normal pancreatic function, and levels <200 µg/g to indicate the presence of exocrine pancreatic insufficiency. Additionally, we determine the body mass index of the patients and study their nutritional status and main biochemical and hematological variables, including their glucose and hemoglobin A1c (HbA1c) levels. Results: Exocrine pancreatic insufficiency is detected in 60% of the patients. Among these, 83.3% are severe cases, and 72% of the latter also are diagnosed with endocrine pancreatic insufficiency (diabetes mellitus). During the nutritional status study, HbA1c levels are significantly higher, and magnesium and prealbumin levels are significantly lower in patients with exocrine pancreatic insufficiency than in those without this disease. Conclusions: Exocrine and endocrine pancreatic insufficiency are highly prevalent among patients with chronic pancreatitis and an early diagnosis of these diseases is vital to improve the clinical management of these patients and reduce their risk of mortality.Junta de Andalucia PC-0549-2017 PC-0498-201

Participación del alumnado de posgrado en la organización y desarrollo de seminarios de investigación en temas de índole pública: democracia, corrupción y buen gobierno desde la perspectiva comparada

Memoria ID-0248. Ayudas de la Universidad de Salamanca para la innovación docente, curso 2014-2015

Nasopharyngeal swab for the diagnosis of COVID-19

RESUMEN Introducción y objetivo: La prueba de diagnóstico directo del COVID-19 de mayor sensibilidad es la toma de muestras de nasofaringe mediante un hisopo para estudio posterior mediante RT-PCR. El objetivo de nuestro trabajo es exponer pormenoriza-damente la forma más adecuada de realizar dicha técnica. Método: Descripción de los diferentes pasos necesarios para la toma de muestras nasofaríngeas en pacientes con COVID-19. Resultados: Los pasos a tener en cuenta son: 1. Previamente se des-carta que no existan contraindicaciones para la toma de muestra. 2.Etiquetado de la muestra y preparación del volante de petición. 3. Colocación de EPI según los están-dares de la institución en la que se trabaja. 4. Explicación al paciente del proceso a realizar. 5. Técnica para la toma de muestra nasofaríngea 6. Retirada del EPI. 7. Mani-pulación y transporte de la muestra al laboratorio. Discusión/Conclusiones: Dado que la sensibilidad de las muestras nasofaríngeas para diagnóstico de COVID-19 depen-de en gran parte de una adecuada técnica, es muy importante la formación adecuada del personal implicado en la recogida de esta. La persona formada a tal efecto debe conocer el objetivo claro de la misma, como se debe poner y quitar el EPI, conocer cómo se realiza la técnica y como se manipula la muestra.Introduction and objective: The diagnostic test of COVID-19 with the highest sensitivity is a nasopharyngeal sample using a swab for subsequent study using RT-PCR. The objective of our work is to explain in detail the most appropriate way to perform this technique. Method: Description of the different steps necessary for taking a nasopharyngeal sample in patients with covid-19. Results: The steps to take into account to get a nasopharyngeal sample in a patient with COVID-19 are: 1- Previously, it is necessary to rule out that there are no contraindications for sampling2. Sample labeling and preparation of the petition form. 3. Placement of PPE according to the institution rules4. Explanation to the patient of the process to be performed 5. Procedure for taking a nasopharyngeal sample. &amp;. Withdrawal of the EPI. /. Handling and tranportation of the sample to the laboratory. Discussion/Conclusions: Given that the sensitivity of the nasopharyngeal simples for the diagnosis of COVID-19 depends largely on a correct technique, the adequate training of the personnel involved in this collection is very important. The examiner must know the objetive of the procedure, how top ut on and take off the PPE, know how the technique is performed and how the sample is handled