Neutrinoless double β decay with small neutrino masses

Proceedings of the Corfu Summer Institute 2012 "School and Workshops on Elementary Particle Physicsand Gravity", September 8-27, 2012, Corfu (Greece). PoS(Cofu2012)028.If the only contribution to neutrinoless double beta decay (0vββ) are neutrino masses its discovery may be very difficult, especially if neutrinos present a normal hierarchy spectrum. However, this is not the only possibility; 0nbb can in general produce electrons of either chirality, in contrast with the neutrino induced 0vββ which predicts two left-handed electrons. Using an effective Lagrangian approach we classify the lepton number violating (LNV) effective operators with two leptons of either chirality but no quarks, ordered according to the magnitude of their contribution to 0vββ. We point out that, for each of the three chirality assignments, eLeL;eLeR and eReR , there is only one LNV operator of the corresponding type to lowest order, and these have dimensions 5, 7 and 9, respectively. Neutrino masses are always induced by these extra operators but can be delayed to one (dimension 7) or two loops (dimension 9). Under the assumption that 0nbb is dominated by the operators of dimension 7 or 9 we find that the scale of new physics should be relatively low (< 30 TeV). We also list the SM additions generating these operators upon integration of the heavy modes, and discuss simple realistic examples of renormalizable theories for each case. The phenomenology of a model giving rise to the dimension 9 operator has been analyzed with some detail: if 0vββ is going to be seen in the next round of experiments, the doubly charged scalars of the model could be seen at the LHC and lepton flavour violating (LFV) rates could be at the reach of foreseen experiments. Moreover neutrino masses, which arise at two loops, display a very particular structure and are strongly constrained, in fact, sin2 ϴ13 > 0,008, when μ --> eee is required to lie below its present experimental limit

Profile of grassroots football coaches of Spanish professional clubs

The aim of the study was to identify the profile and education of grassroots football coaches (working with 8-12-year olds) of Spanish professional clubs (first and second male division, and first female division), as well as the qualities and characteristics they should have. For this purpose, an ad hoc questionnaire of 57 questions was used, grouped into seven dimensions, and administered to 153 coaches. This research focuses on the socio-demographic variables as well as on the dimensions of the coach’s qualities and coach’s education. The results showed that the profile of the coach corresponded to the following: male between 20 and 30 years of age, with experience in football initiation of 4-7 years, but with a 2-year experience in coaching boys and girls aged 8-12 years, with the specific football qualification level II or Union of European Football Associations A. The coaches considered it very important to have pedagogical skills and to use coaching methods that focus on learning rather than on results in order to be a coach in these age categories. Moreover, the participants considered that the training received in the official coaching courses did not adequately qualify them to carry out the sporting and human education of boys and girls in the benjamin (under 10) and alevin (under 12) age categories. The coaches also felt that the contents of the coaching course should be adjusted to the requirements of these age groups. These considerations can help sports federations and training centres to establish strategies to improve the official training programmes for football coaches

La biblioteca auxiliar de un archivo: la Biblioteca de la Catedral de Valencia

The Archive-Library of the Cathedral of Valencia has launched a series of initiatives to redefine and enhance the value of its auxiliary library, considering it a living library and not a mere storehouse of books. On the one hand, by reviewing the criteria for the selection, classification and ordering of the book collection. On the other hand, by adopting a new library management programme (Sophia) and an OPAC accessible from the archive's website, which provides the researcher-user with the available description tools. With this, the Metropolitan Cathedral of Valencia aims to offer Valencian society a renewed specialised library, a reference for the study of the History of the Church.El Archivo-Biblioteca de la Catedral de Valencia ha implementado una serie de iniciativas que permiten redefinir, y poner en valor, su Biblioteca auxiliar, pasando a considerarla una biblioteca viva y no un mero almacén de libros. Por una parte, revisando los criterios de selección, clasificación y ordenación del fondo librario. Por otra, con la adopción de un nuevo programa de gestión bibliotecaria (Sophia) y de un OPAC accesible desde la web del archivo, poniendo a disposición del investigador-usuario las herramientas de descripción necesarias para un mejor conocimiento de la colección bibliográfica. Con ello, la catedral metropolitana de Valencia ofrece a la sociedad valenciana una biblioteca especializada renovada, de referencia para el estudio de la Historia de la Iglesia

Occupational stress and burnout among physiotherapists: a cross-sectional survey in Cadiz (Spain)

Background Occupational stress is considered an ongoing epidemic. An inadequate response to a stressful situation can trigger burnout syndrome. In this way, the assistant services (health and teaching) often reach higher levels of burnout. The present study aimed to measure the level of occupational stress and burnout in physiotherapists in the province of Cadiz (Spain), working in the public and/or private sector. Methods This was an observational, descriptive and cross-sectional study. A sample of 272 physiotherapists took part in the study. The variables measured were sociodemographic variables, working conditions, level of occupational stress and burnout. Burnout includes three characteristics or dimensions: emotional exhaustion (EE), depersonalization (DP) and personal accomplishment (PA). Correspondence analysis of the sociodemographic, organizational and psychological variables were analyzed using Chi-squared significance tests. Spearman correlations and a linear regression analysis were also carried out to determine the dependence between occupational stress and burnout. Results The results showed that 30.51% of physiotherapists suffered from a high level of occupational stress, while 34.56% suffered from an average level. There was a clear dependence between a high level of stress and professionals who felt stressed during their academic training period (p = 0.02), those who were in temporary work (p = 0.03) and those with over 10 years of professional experience (p = 0.05). The overall level of burnout was low, since only the EE dimension had a high value; the average was 21.64 +/- 10.57. The DP (6.57 +/- 4.65) and PA (39.52 +/- 5.97) levels were low. There was a significant dependence (p < 0.05) between EE and the following sociodemographic variables: work shift, willingness to study the same degree, stress and inadequate academic training, and a stressful job. In addition, a significant correlation was found between occupational stress and the EE and DP dimensions of burnout. Conclusions A high prevalence of occupational stress was detected among physiotherapists in Cadiz (Spain). The levels of occupational stress and its correlation with burnout show that the cumulative effect of stress could lead to burnout. Furthermore, these results regarding occupational stress show the necessity of developing coping strategies for physiotherapists and healthcare staff

Viejas aunque “nuevas” metodologías de enseñanza-aprendizaje: los talleres de experimentación lítica prehistórica como herramienta de formación

Explicar y comprender la Historia de la Humanidad requiere conocer cómo y qué herramientas se fueron elaborando a lo largo de más de 2,5 millones de años. Una parte importante de dichos instrumentos se fabricaron durante la Prehistoria usando diferentes tipos de rocas. Así, entre los contenidos curriculares incluidos en los grados en Historia y en másteres afines en España, destacan diversas nociones sobre tecnología e instrumental lítico prehistórico, con los que se intenta que el alumnado conozca los procesos de producción lítica tallada, su evolución tecnológica y tipológica, y los procesos de clasificación y análisis. El empleo de material gráfico como recurso docente, se viene mostrando insuficiente para conseguir buenos resultados de aprendizaje. El desarrollo de talleres de experimentación lítica tallada sobre instrumental prehistórico constituye la mejor metodología de enseñanza-aprendizaje con la que mostrar e interactuar con los estudiantes, aunque dicha actividad requiere de una serie de condiciones de difícil consecución. La experiencia llevada a cabo en asignaturas del Grado en Historia y del Máster en Arqueología Profesional y Gestión del Patrimonio de la UA, es un claro ejemplo de evaluación de las fortalezas y debilidades de la implementación de dichos talleres

la Biblioteca de la Catedral de Valencia

El Archivo-Biblioteca de la Catedral de Valencia ha implementado una serie de iniciativas que permiten redefinir, y poner en valor, su Biblioteca auxiliar, pasando a considerarla una biblioteca viva y no un mero almacén de libros. Por una parte, revisando los criterios de selección, clasificación y ordenación del fondo librario. Por otra, con la adopción de un nuevo programa de gestión bibliotecaria (Sophia) y de un OPAC accesible desde la web del archivo, poniendo a disposición del investigadorusuario las herramientas de descripción necesarias para un mejor conocimiento de la colección bibliográfica. Con ello, la catedral metropolitana de Valencia ofrece a la sociedad valenciana una biblioteca especializada renovada, de referencia para el estudio de la Historia de la IglesiaThe Archive-Library of the Cathedral of Valencia has launched a series of initiatives to redefine and enhance the value of its auxiliary library, considering it a living library and not a mere storehouse of books. On the one hand, by reviewing the criteria for the selection, classification and ordering of the book collection. On the other hand, by adopting a new library management programme (Sophia) and an OPAC accessible from the archive's website, which provides the researcher-user with the available description tools. With this, the Metropolitan Cathedral of Valencia aims to offer Valencian society a renewed specialised library, a reference for the study of the History of the Churc

Reología y química de las lágrimas artificiales

Las Lágrimas Artificiales (LA) constituyen el primer escalón de tratamiento para la Enfermedad de Ojo Seco (EOS), así como complemento en cualquier estadio de esta enfermedad. Tradicionalmente, los laboratorios fabricantes reportan su composición química en términos de principios activos, conservantes y otros componentes, y con esta información es con la que se realizan estudios de seguridad y eficacia, sirviendo también como pautas para prescripción médica.Los tipos y subtipos de la EOS, junto con esta información química, guían el tipo de LA recomendada para cada paciente, teniendo como objetivo aportar el componente más similar posible al alterado en la lágrima biológica.Sin embargo, la fricción entre las caras de la Superficie Ocular (SO) es clave en la etiología y gravedad de enfermedades de la SO, incluida la EOS. Esta fricción puede provocar o empeorar el desgaste de los epitelios que recubren la SO y, con ello, sintomatología en el paciente.Muy pocas veces se atiende a la física de fluidos que subyace entre las interacciones de la SO y la lágrima y que es responsable de dicha fricción. En este sentido, la lágrima puede interpretarse como un fluido lubricante que baña las caras sólidas de la SO, sufriendo deformaciones de cizalla a velocidades muy variables. Esto se llama sistema tribológico.Por este motivo, no son sólo importantes las características químicas del fluido como osmolaridad, pH o componentes, sino también su comportamiento físico en cuanto a viscosidad, tensión superficial o bioadherencia.Respecto a esta “cara B” de las fichas técnicas de las LA, en la mayoría de las ocasiones sólo se distingue la denominación de “colirios”, “geles” o “pomadas”, sin detalles ni variables objetivas. Una información más completa y su comportamiento en el sistema tribológico de la SO podría aportar conocimiento para mejorar la eficacia y la prescripción del tratamiento más personalizada.Este estudio se centra en la descripción detallada de la viscosidad y tensión superficial de varias LA comercializadas en España, así como la medida de otras características que muy pocas veces se pueden encontrar en la información de una formulación, tales como la osmolaridad, el pH, índice de refracción, fosfatos, etc.Con esta extensa información se tratará de crear grupos o familias de lágrimas que compartan características en común, y se estudiarán las posibles relaciones entre los componentes y comportamientos medidos.<br /

Gas adsorption isotherm, pore size distribution, and free volume fraction of polymer-polymer mixed matrix membranes before and after thermal rearrangement

Producción CientíficaIn this work, CO2 adsorption at 273.15 K and N2 adsorption at 77 K of mixed matrix membranes has been studied, as a method to directly determine their fractional free volume (FFV). These membranes consist of a continuous phase of copoly(o-hydroxyamide)s (HPA) or copoly(o-hydroxyamide-amide)s (PAA) and a relatively highly porous polymer network filler (PPN1). Both the pure copolymers and the mixed matrix membranes (MMMs) have been analyzed before and after a thermal rearrangement (TR) process. The CO2 adsorption results have allowed characterizing the pore size distribution of the studied membranes in the 3–15 Å range, by using the Non-Local Density Functional Theory (NLDFT). Whereas the N2 adsorption has allowed determining the pore size distributions in the range between 20 and 250 Å. The experimental determination of the pore volume and the density allows the direct calculation of the membranes’ free volume fractions, which were in good agreement with the most usual FFV evaluation methods. In addition, part of the pore volume detected by N2 adsorption was associated with defects and poor integration of the membrane components. This correction has allowed us to make a new evaluation of the density of these materials.Gobierno de España (AEI) proyects (PID2019-109403RB-C21/AEI/10.13039/501100011033 y PID2019-109403RB-C22/AEI/10.13039/501100011033)Junta de Castilla y León - EU-FEDER (CL-EI-2021-07, UIC082

Morphological, chemical and electrical characterization of a family of commercial nanofiltration polyvinyl alcohol coated polypiperazineamide membranes

Three AFC membranes from PCI, of the thin film composite (TFC) nanofiltration type, have been characterized by using XPS, AFM, Contact angles, Zeta potential and permeation experiments. This plethora of complimentary methods portrays a deep and exhaustive description of these membranes that could be used to tune fabrication and modification of nanofiltration membranes to get better properties. Morphological properties, including porosity, water permeability, fractal dimension, Wenzel parameter and roughness, correlate well with pore sizes. While functional characteristics as, for example wettability correlate well with the O/N ratio. Increasing O/N ratios should be interpreted as caused by increasing PVA coverages. The charge on the membrane's surface is ordered in a different way for different pH but are quite similar anyway. The effect of charges on retention of 1:1, 1:2 and 2:1 salts (as tested with NaCl, Na2SO4 and CaCl2) increases with increasing O/N and wettability. Consequently, the trend of salt retentions can be explained in terms of the PVA coverage and the details of the amphoteric behavior of the three AFC membranes studied.This work was supported by the Spanish Ministry of through project MAT2016-76413-C2-1-R and the Regional Government of Castilla y León and the EU-FEDER (CLU2017-09, UIC082 and VA088G19)

El Bronce Final y el Hierro Antiguo (1300/1250-550 cal AC) en los pasillos de Tabernas y Fiñana a partir de las prospecciones arqueológicas desarrolladas en el marco del Proyecto Millares

En las décadas de los años 80 y 90 se llevaron a cabo varias prospecciones en el marco del Proyecto Los Millares, con el objetivo de ampliar el conocimiento de la secuencia de ocupación de los pasillos de Fiñana y Tabernas durante la Prehistoria Reciente. Presentamos aquí parte de los resultados de estas prospecciones, centrándonos en las fases del Bronce Final y el Hierro Antiguo. El análisis de los materiales además de permitirnos adscribir nuevos asentamientos a estos periodos, nos ha facilitado la exploración de las dinámicas de poblamiento en la transición hacia la formación de los oppida ibéricos. Entre los materiales estudiados, los fragmentos a torno de origen fenicio son muy minoritarios, lo que indica que estas áreas no constituyeron vías de penetración importantes hacia el interior.In the 1980s and 1990s, several surveys were carried out as part of the Los Millares Project, in order to expand our knowledge of the sequence of occupation of the Fiñana and Tabernas corridors during Late Prehistoric times. Here we present part of the results of these surveys, focusing on the phases of the Late Bronze Age and the Early Iron Age. The analysis of the materials has allowed us to explore the dynamics of settlement in the transition to the formation of the Iberian oppida, in addition to allowing us to attach new settlements to these periods. Among the materials studied, lathe fragments of Phoenician origin are very rare, which indicates that these areas were not important routes of penetration to the inland region.Producción artesanal y división del trabajo en el Calcolítico del Sudeste de la Península Ibérica: un análisis a partir del registro arqueológico de Los Millares (PARTESI) (PID2020-117437, GB-I00/AEI/10.13039/501100011033). Agencia Estatal de Investigación del Ministerio de Ciencia e Innovació