Non-localities and Fermi motion corrections in K−K^- atoms

We evaluate the p-wave $K^-N$ amplitudes from the chiral Lagrangians and from there construct the p-wave part of the $K^-$ nucleus optical potential plus a small s-wave part induced from the elementary p-wave amplitude and the nuclear Fermi motion. Simultaneously, the momentum and energy dependence of the s-wave optical potential, previously developed, are taken into account and shown to generate a small p-wave correction to the optical potential. All the corrections considered are small compared to the leading s-wave potential, and lead to changes in the shifts and widths which are smaller than the experimental errors. A thorough study of the threshold region and low densities is conducted, revealing mathematical problems for which a physical solution is given.Comment: revised version, 28 pages, Latex, 8 postscript figures. Submitted to Nucl. Phys.

Condiciones ambientales y bienestar. La ventilación

Probablemente las condiciones ambientales sean una de las principales asignaturas pendientes en los alojamientos de vacuno de leche. La concurrencia en gran parte de nuestro país de inviernos fríos y veranos muy calurosos añaden una dificultad más a la ya compleja tarea de diseñar una ventilación correcta. Los cambios bruscos de tiempo tampoco ayudan. Conscientes de la dificultad de la tarea, hemos querido ofrecer en este capítulo unas sencillas recomendaciones y aportar algunas sugerencias al hilo de lo que se está haciendo en otros países con sistemas de producción similares al nuestro. De esta forma, resaltamos la importancia de evitar las corrientes de aire pero proporcionar una amplia superficie de entrada y de salida de aire. Para que ello pueda ser posible, incluso en invierno, sugerimos la instalación de cortavientos. Finalmente, queremos resaltar la necesidad de que la renovación de aire llegue a todos los rincones de los alojamientos sin que se presenten zonas ciegas, y de evitar una humedad relativa excesiva, motivo de estrés térmico, de patologías respiratorias y de deterioro acelerado de los edificios

Efficient Database Evolution in Digital Library Reengineering

Cursos e Congresos, C-155[Abstract] With the advancement of internet applications, extensive information systems were created to effectively manage and provide easy access to documents, which coincided with a global initiative to convert physical documents into digital format, making them accessible through the internet. After two decades, these databases are well-structured and organized, although the software used to manage them is gradually becoming outdated. Additionally, once the initial digitization and creation of metadata are completed, it is sensible to enhance the metadata further to provide more detailed information about the documents. In this article we propose a tool to facilitate the evolution of large documentary databasesXunta de Galicia; ED431C 2021/53CITIC is funded by the Xunta de Galicia through the collaboration agreement between the Consellería de Cultura, Educación, Formación Profesional e Universidades and the Galician universities for the reinforcement of the research centres of the Galician University System (CIGUS), and by PRE2021-099351, MCIN/AEI+”FSE+”;GRC[ED431C 2021/53]: GAIN/Xunta de Galicia; TED2021-129245B-C21(PLAGEMIS): MCIN/AEI+”NextGenerationEU“/PRTR; PID2020-114635RB-I00(EXTRACompact): MCIN/AEI; PID2021-122554OB-C33 (OASSIS): MCIN/AEI+EU/ERDF A way of making Europe; PDC2021-120917-C21 (SIGTRANS): MCIN/AEI+“NextGenerationEU”/PRT

Charmed hadrons in nuclear medium

We study the properties of charmed hadrons in dense matter within a coupled-channel approach which accounts for Pauli blocking effects and meson self-energies in a self-consistent manner. We analyze the behaviour in this dense environment of dynamically-generated baryonic resonances as well as the open-charm meson spectral functions. We discuss the implications of the in-medium properties of open-charm mesons on the $D_{s0}(2317)$ and the predicted X(3700) scalar resonances.Comment: 4 pages, 5 figures, invited parallel talk in the 5th International Conference on Quarks and Nuclear Physics (QNP09), Beijing, September 21-26, 200

Strange and charm mesons at FAIR

We study the properties of strange and charm mesons in hot and dense matter within a self-consistent coupled-channel approach for the experimental conditions of density and temperature expected for the CBM experiment at FAIR/GSI. The in-medium solution at finite temperature accounts for Pauli blocking effects, mean-field binding of all the baryons involved, and meson self-energies. We analyze the behaviour in this hot and dense environment of dynamically-generated baryonic resonances together with the evolution with density and temperature of the strange and open-charm meson spectral functions. We test the spectral functions for strange mesons using energy-weighted sum rules and finally discuss the implications of the properties of charm mesons on the D_{s0}(2317) and the predicted X(3700) scalar resonances.Comment: 12 pages, 9 figures, invited talk at XXXI Mazurian Lakes Conference on Physics: Nuclear Physics and the Road to FAIR, August 30-September 6, 2009, Piaski, Polan

Unitarized chiral perturbation theory of hadrons

An exposition is made of recent developments using techniques of unitary chiral perturbation theory, $U \chi P T$, which allows one to extend predictions using chiral Lagrangians to higher energies than ordinary chiral perturbation theory, including the region of low lying mesonic and baryonic resonances, some of which are dynamically generated in the approach. Results for meson meson scattering, pion and kaon form factors and meson baryon scattering are shown. Applications are done for nuclear problems showing the results for the kaon and eta selfenergies, phi renormalization in a nuclear medium and $\sigma$ renormalization in the medium, comparing results with recent experiments.Comment: Talk at PANIC2002 Conference, Osaka, October 200

Insertion companies in social and solidarity economy: perspectives and proposal from FAEDEI

El objetivo del artículo es presentar las perspectivas y propuestas que se ponen en marcha en la Federación de Asociaciones Empresariales de Empresas de Inserción (FAEDEI), para fomentar la visibilización, el desarrollo y la creación de empresas de inserción. El artículo explica el marco de actuación en el que las más de doscientas empresas de inserción que actualmente operan en España desarrollan su modelo de economía social, de eficacia reconocida para la inserción sociolaboral de personas con dificultades de acceso al mercado laboral..Main goal of the paper is to introduce new perspectives and proposals put into commission by the Insertion Companies Entrepreneurial Associations Federation (Federación de Asociaciones Empresariales de Empresas de Inserción,FAEDEI) to promote the visibility, development and creation of insertion companies. The paper explains the action frame in which the more than two hundred insertion companies currently operating in Spain develop their social economy model, o model of recognized efficiency for the social and labour insertion of persons with difficulties to access the labour market