Hidrofugación de rocas carbonatadas porosas: Propiedades que controlan su eficacia

La finalidad del presente estudio es la de tratar de establecer que propiedades físicas pueden ser empleadas de una forma rutinaria para conocer el grado de eficacia de un tratamiento aplicado sobre un determinado sustrato pétreo. Con esta finalidad se han seleccionado dos tipos de rocas carbonatadas, la caliza dellontoria (Burgos) y la dolomía deLaspra (Asturias), con una configuración del sistema poroso muy diferente. Se han empleado tres productos protectores de naturaleza silicoorgánica, ampliamente utilizados, dos siloxanosy un copolimero. Las propiedades seleccionadas (ángulo de contado y permeabilidad al vapor de agua) han resultado idóneas para determinar el grado de eficacia de los distintos tratamientos. Se ha comprobado que dicho grado está condicionado por las características químicas del producto, siendo prácticamente nula la influencia de las características de la roca. Se están llevando a cabo otras investigaciones con las mismas piedras y productos de tratamiento en un intento de establecer correlaciones entre el grado de eficacia de dichos tratamientos y la durabilidadThe aim of this study is to establish which physical properties may be used, in a routine way, in order to know the efficacy rate of a treatment applied on a specific rocky substrate. Whit this purpose, two types of carbonated rocks, the limestone ofHontoria (Burgos) and the dolomite ofLaspra (Asturias) have been chosen, with a very different configuration of their porosity systems. Three protection products, with silico-organic nature and widely used have been used, to wit: two siloxenes and a copolymer. Tue properties chosen (contact angle and water vapour permeability) have been the proper ones in order to determine the efficacy level of the different treatments. This level was demonstrated to be conditioned by the chemical characteristics of this product, and characteristics is practically null. Other investigations are being carried out with the same rocks and treatmen products in orderPeer reviewe

Spectra of weighted algebras of holomorphic functions

We consider weighted algebras of holomorphic functions on a Banach space. We determine conditions on a family of weights that assure that the corresponding weighted space is an algebra or has polynomial Schauder decompositions. We study the spectra of weighted algebras and endow them with an analytic structure. We also deal with composition operators and algebra homomorphisms, in particular to investigate how their induced mappings act on the analytic structure of the spectrum. Moreover, a Banach-Stone type question is addressed.Comment: 25 pages Corrected typo

Ischemic postconditioning reduces reperfusion arrhythmias by adenosine receptors and protein kinase C activation but is independent of KATP channels or connexin 43

Funding: This study was supported by Secretaría de Investigación, Internacionales y Posgrado, Universidad Nacional de Cuyo (06/J505) and by the Spanish, Ministerio de Ciencia, Innovación y Universidades, Instituto de Salud Carlos III (CIBERCV), cofinanced by the European Regional Development Fund (ERDF-FEDER, a way to build Europe), and by Fundació La Marató de TV3 (n◦. 201536-10). Antonio Rodríguez-Sinovas has a consolidated Miguel Servet contract. Jose A. Sánchez was supported by the International Research Training Group 1566 on Protecting the Heart from Ischemia (PROMISE).Ischemic postconditioning (IPoC) reduces reperfusion arrhythmias but the antiarrhythmic mechanisms remain unknown. The aim of this study was to analyze IPoC electrophysiological effects and the role played by adenosine A, A and A receptors, protein kinase C, ATP-dependent potassium (K) channels, and connexin 43. IPoC reduced reperfusion arrhythmias (mainly sustained ventricular fibrillation) in isolated rat hearts, an effect associated with a transient delay in epicardial electrical activation, and with action potential shortening. Electrical impedance measurements and Lucifer-Yellow diffusion assays agreed with such activation delay. However, this delay persisted during IPoC in isolated mouse hearts in which connexin 43 was replaced by connexin 32 and in mice with conditional deletion of connexin 43. Adenosine A, A and A receptor blockade antagonized the antiarrhythmic effect of IPoC and the associated action potential shortening, whereas exogenous adenosine reduced reperfusion arrhythmias and shortened action potential duration. Protein kinase C inhibition by chelerythrine abolished the protective effect of IPoC but did not modify the effects on action potential duration. On the other hand, glibenclamide, a K inhibitor, antagonized the action potential shortening but did not interfere with the antiarrhythmic effect. The antiarrhythmic mechanisms of IPoC involve adenosine receptor activation and are associated with action potential shortening. However, this action potential shortening is not essential for protection, as it persisted during protein kinase C inhibition, a maneuver that abolished IPoC protection. Furthermore, glibenclamide induced the opposite effects. In addition, IPoC delays electrical activation and electrical impedance recovery during reperfusion, but these effects are independent of connexin 43

Use of vaccines and factors associated with their uptake variability in dogs, cats and rabbits attending a large sentinel network of veterinary practices across Great Britain

Vaccination remains a mainstay of companion animal population health. However, how vaccine use at a population level complies with existing guidelines is unknown. Here we use electronic health records to describe vaccination in dogs, cats and rabbits attending a large sentinel network of UK veterinary practices. In total, 77.9% (95% CI: 77.6-78.1) of animals had recorded vaccinations. The percentage of animals with recorded vaccinations was higher in dogs, neutered animals, in insured dogs and cats and in purebred dogs. Vaccination rates varied in different regions of Great Britain in all species. Dogs and cats belonging to owners living in less deprived areas of England and Scotland were more likely to be recorded as vaccinated. In the vaccinated population, cats received more core vaccines per year of life (0.86) than dogs (0.75), with feline leukaemia vaccines almost as frequent as core vaccines. In dogs, leptospira vaccines were more frequent than core vaccines. This descriptive study suggests a substantial proportion of animals are not benefiting from vaccine protection. For the first time, we identify potential factors associated with variations in recorded vaccination frequency, providing a critical baseline against which to monitor future changes in companion animal vaccination and evidence to inform future targeted health interventions

Produção científica sobre atividade física, alimentos ultraprocessados e depressão: uma análise bibliométrica

Resumen: Introducción: Los ultraprocesados están cada vez más presentes en la dieta de las personas. Su consumo se asocia con un mayor riesgo de depresión, lo cual, a su vez, se relaciona con menores niveles de actividad física (Gómez-Donoso et al., 2020). Objetivos: Conocer la producción científica sobre actividad física, ultraprocesados y depresión; saber quiénes han sido los autores que mayor número de publicaciones han realizado; descubrir qué países y entidades de afiliación son las más productoras; y averiguar qué áreas han mostrado mayor interés. Métodos: Este estudio ha sido realizado a través del análisis de artículos científicos encontrados en la base de datos Scopus. Se utilizaron los descriptores “physical activity”, “ultra-processed” y “depression”. Lo criteiors de inclusión fueron: artículos científicos completos presentes en la base de datos Scopus, sin rango de fecha; y las publicaciones que tuvieran como muestra a población humana. Resultados y discusión: El número de estudios científicos publicados ha mostrado una evolución ascendente, desde el año 2020. Se observan algunos autores y entidades de afiliación de referencia como Barros o como el Instituto de Salud Carlos III, respectivamente. Existen publicaciones de áreas, mayoritariamente, vinculadas a la salud. Conclusión: La actividad física, los ultraprocesados y la depresión resultan una combinación de un interés creciente entre la comunidad científica.Abstract: Introduction: Ultraprocessed foods are increasingly present in people's diets. Their consumption is associated with an increased risk of depression, which, in turn, is related to lower levels of physical activity (Gómez-Donoso et al., 2020). Aims: To find out the scientific production on physical activity, ultra-processed foods and depression; to find out who are the authors with the highest number of publications; to discover which countries and affiliation entities are the most productive; and to find out which areas have shown the greatest interest. Methods: This study has been carried out through the analysis of scientific articles found in the Scopus database. The descriptors "physical activity", "ultra-processed" and "depression" were used. Inclusion criteria were: full scientific articles present in the Scopus database, without date range; and publications with a human population as sample. Results & discussion: The number of published scientific studies has shown an upward trend since 2020. Some authors and reference affiliation entities such as Barros or the Instituto de Salud Carlos III, respectively, are observed. There are publications in areas mostly related to health. Conclusion: Physical activity, ultra-processed food and depression are a combination of growing interest among the scientific community.Resumo: Introdução: Os alimentos ultraprocessados estão cada vez mais presentes na dieta das pessoas. O seu consumo está associado a um maior risco de depressão, que, por sua vez, está relacionada com menores níveis de atividade física (Gómez-Donoso et al., 2020). Objectivos: Conhecer a produção científica sobre atividade física, alimentos ultraprocessados e depressão; saber quem são os autores com maior número de publicações; descobrir quais os países e entidades de afiliação mais produtivos; e saber quais as áreas que têm demonstrado maior interesse. Métodos: Este estudo foi efectuado através da análise de artigos científicos encontrados na base de dados Scopus. Foram utilizados os descritores "atividade física", "ultraprocessados" e "depressão". Os critérios de inclusão foram: artigos científicos completos presentes na base de dados Scopus, sem intervalo de datas; e publicações que tivessem como amostra uma população humana. Resultados e Discussão: O número de estudos científicos publicados tem apresentado uma tendência de crescimento desde 2020. Observam-se alguns autores e entidades de afiliação de referência como a Barros ou o Instituto de Salud Carlos III, respetivamente. Existem publicações em áreas maioritariamente relacionadas com a saúde. Conclusão: A atividade física, a alimentação ultraprocessada e a depressão são uma combinação de interesse crescente entre a comunidade científica

Desarrollo de la Red Aerobiológica de Castilla y León (RACYL)

XV lnternational A.P.L.E. Symposium of Palynolog

The causal boundary of wave-type spacetimes

A complete and systematic approach to compute the causal boundary of wave-type spacetimes is carried out. The case of a 1-dimensional boundary is specially analyzed and its critical appearance in pp-wave type spacetimes is emphasized. In particular, the corresponding results obtained in the framework of the AdS/CFT correspondence for holography on the boundary, are reinterpreted and very widely generalized. Technically, a recent new definition of causal boundary is used and stressed. Moreover, a set of mathematical tools is introduced (analytical functional approach, Sturm-Liouville theory, Fermat-type arrival time, Busemann-type functions).Comment: 41 pages, 1 table. Included 4 new figures, and some small modifications. To appear in JHE

An overall approach to food safety

Los cambios técnicos, económicos y culturales demandan una regulación, tanto a nivel comunitario como a nivel nacional, del nuevo concepto de seguridad alimentaria. El libro blanco sobre seguridad alimentaria plantea una coordinación al respecto, con el propósito de unificación de criterios para una mejor operabilidad. La alimentación y su regulación suponen un aspecto fundamental de la salud pública. En el ámbito organizativo de la Unión Europea, así como a nivel de la OMS (Organización Mundial de la Salud) y a nivel nacional, se están abordando unilateralmente la creación tanto de organismos como de organizaciones dedicadas a la seguridad alimentaria, para ofrecer garantías a los consumidores. Nuestro objetivo es revisar y comentar el enfoque integral que se plantea a nivel de seguridad alimentaria (desde la producción primaria, hasta el consumidor), el cual dará solución a la dispersión normativa. El enfoque integral vendría a paliar los inconvenientes planteados actualmente con el enfoque unilateral.Technical, economic and cultural changes require regulation of the new concept of food safety at both EU and national levels. The white book on food safety proposes coordination with the aim of unifying criteria for improved operability. Food and its regulation represent a fundamental aspect of public health. In order to provide consumers with guarantees, the unilateral creation of organisms and organizations dedicated to food safety is being undertaken in both the European Union, the WHO (World Health Organization) and in individual nations. Our aim is to review and comment on an overall approach to food safety, from primary production down to the consumer, which would resolve the regulatory dispersal and overcome the present difficulties resulting from the unilateral approach

Susceptibilidad de los sainos (Tayassu tajacu) al virus de la fiebre aftosa.

Se estudió la susceptibilidad y el posible estado de portador al virus de la fiebre aftosa en los sainos (Tayassu tajacu). Se inocularon 6 sainos con 10 elevado a la menos 6 DICC (Dosis Infecciosa Cultivo Celular) de la cepa 01 Campos-Brasil, por vía nasal e intradérmica en el rodete coronario. Se dejaron 4 sainos como controles sin inocular. Los sainos inoculados manifestaron fiebre a las 96 horas postinoculación y títulos seroneutralizantes a los 6 días. Solamente uno de los controles mostró aumento en la temperatura y desarrolló anticuerpos seroneutralizantes. Se aisló virus de moco nasal, saliva y materia fecalGanado de doble propósito-Ganaderia doble proposit

14. VIGENCIA DE LOS CONCEPTOS, MÉTODOS, HERRAMIENTAS Y MATRICES DE LA PLANEACIÓN ESTRATÉGICA: UNA REVISIÓN BIBLIOGRÁFICA

Las Micro, Pequeñas y Medianas empresas (Mipymes) constituyen gran parte del tejido empresarial a nivel local, esto les asiente una alta influencia en la economía del país debido a la generación de empleo y de riqueza. Cabe destacar que el éxito y la permanencia de estas, obedece entre muchos factores a la planeación estratégica de las mismas. Sin embargo, el desconocimiento de métodos de planeación y la priorización de acciones diarias de la actividad del negocio hace que las empresas no planeen sus acciones y en consecuencia fracasen en el primer y segundo año de su creación. Es por ello, que esta investigación está encaminada a plantear unas bases para el desarrollo de una herramienta tecnológica que le permita a las Mipymes la planificación de sus operaciones estratégicas y tácticas a corto, mediano y largo plazo. El estudio consta de tres fases: estado del arte, desarrollo del aplicativo, y transferencia tecnológica. Para esta primera fase, se realizó una revisión bibliográfica de los últimos 5 años con el fin de identificar conceptos, métodos, herramientas y matrices implementadas por diversas compañías, de los cuales algunos de ellos están plasmados en el presente artículo de revisión bibliográfica. De esta manera se pretende tener el insumo necesario para la propuesta del desarrollo de la herramienta tecnológica objeto de la investigación y con ello lograr contribuir en la actividad misional de las Mipymes