Contribución al estudio de la utilización selectiva por Apis mellifera L. de la flora local en un colmenar del NW de la Península Ibérica: (Galicia)

Contribution at the study of the selective utilization for Apis melltfera L. of the local flora in one apyary in the NW of Spain. In this work, we have determined the selective utilizatión of the pollen collection by Api.s inellifera in the species of the sub-humed mediterranean (in accordance with climatic index of Allué) zone of Galicia (NW of Spain), throughout sampling pollen loud at the hives. This was quantified the different plant used by honey bees, analyzing the relative importance of them.En el presente trabajo se ha estudiado la apetencia selectiva que Apis mellifera hace de las especies de la vegetación mediterránea subhúmeda de tendencia centroeuropea (según los índices climáticos de Allué) en Galicia (NW de España), en su recolección de polen, mediante el muestreo sistemático de cúmulos de polen corbicular. Ello ha permitido diagnosticar y cuantificar las especies preferidas y determinar la importancia relativa de cada una de ellas

Semantic Similarity Measures Applied to an Ontology for Human-Like Interaction

The focus of this paper is the calculation of similarity between two concepts from an ontology for a Human-Like Interaction system. In order to facilitate this calculation, a similarity function is proposed based on five dimensions (sort, compositional, essential, restrictive and descriptive) constituting the structure of ontological knowledge. The paper includes a proposal for computing a similarity function for each dimension of knowledge. Later on, the similarity values obtained are weighted and aggregated to obtain a global similarity measure. In order to calculate those weights associated to each dimension, four training methods have been proposed. The training methods differ in the element to fit: the user, concepts or pairs of concepts, and a hybrid approach. For evaluating the proposal, the knowledge base was fed from WordNet and extended by using a knowledge editing toolkit (Cognos). The evaluation of the proposal is carried out through the comparison of system responses with those given by human test subjects, both providing a measure of the soundness of the procedure and revealing ways in which the proposal may be improved.The development of this approach and its construction as part of the LaBDA-Interactor Human-Like Interaction System, part of the research projects SemAnts (TSI-020110-2009-419) and THUBAN (TIN2008-02711) and CADOOH (TSI-020302-2011-21), is supported by the Spanish Ministry of Industry, Tourism and Commerce and the Spanish Ministry of Education, respectively. Besides, the knowledge bases were populated using the COGNOS toolkit developed through the research project MA2VICMR (S2009/TIC-1542) supported by the Regional Government of Madrid.Publicad

Evolution of specific antibodies and proviral DNA in milk of small ruminants infected by small ruminant lentivirus

The diagnosis of Small Ruminant Lentivirus (SRLV) is based on clinical signs, pathological lesions and laboratory testing. No standard reference test for the diagnosis of maedi visna has been validated up to the present, and it is puzzling that tests which detect antibodies against the virus and tests which detect the proviral genome may render opposite results. The aim of this study was to evaluate the presence in milk throughout a lactation period of specific antibodies by ELISA and of SRLV proviral DNA by a PCR of the highly conserved pol region. A six-month study was conducted with the milk of 28 ewes and 31 goats intensively reared. The percentage of animals with antibodies against SRLV increased throughout the study period. Seroprevalence in sheep was 28% at the beginning of the study and by the end it had increased up to 52.4%. In goats, initial seroprevalence of 5.6% increased to 16%. The percentage of PCR positive ewes was stable throughout the study period. Of the positive sheep, 21.4% were PCR-positive before antibodies could be detected and most of them became PCR-negative shortly after the first detection of antibodies. This might suggest that antibodies have a neutralizing effect. In addition, an equal percentage of sheep were always PCR-negative but either became ELISA-positive or was always ELISA-positive, which might support this hypothesis. On the other hand, the PCR results in goats did not follow any pattern and oscillated between 35.3% and 55.6% depending on the month. Most goats positive by PCR failed to develop antibodies in the 6 months tested. We may conclude that the infection and the antibody response to it follow a different trend in sheep and goats

Fundamento y diseño de un proyecto de evaluación de la integración educativa de los niños con necesidades especiales por su deficiencia visual

Este artículo pretende dar a conocer una investigación de evaluación de la educación integrada con niños ciegos y deficientes visuales en España que se está realizando por la O.N.C.E. con un grupo de profesores de la Universidad Autónoma de Madrid. En él se hace un resumen de los objetivos y naturaleza de la investigación evaluativa emprendida, valorativa, iluminativa y formativa, y un análisis del diseño, variables y metodología usada en la investigaciónThis article feports a research work on the evaluation of educational integration with blind and visually handicapped children in Spain. The research is being conducted by the O.N.C.E. in collaboration with a group o teachers of the Universidad Autónoma de Madrid. It outlines the objectives and nature of the evaluative study undertaken (valuative, instructive and formative) and analyzes the design, thé variables and the methodology used in the stud

Implementación del sistema de gestión de calidad para los procesos productivos en la compañía industrias Cruz Hnos. S.A.

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Vegetable oil-derived polyether-polyester thermosets: Solvent-free synthesis and mechanical properties

Vegetable oils differing in the number and kind of reactive chemical sites were investigated as potential feedstock in reactions involving epoxy rings to produce sustainable polymeric thermosets. Sustainable polyether-polyester matrices were synthesized through the mixing of three different vegetable oils (castor, tung and sunflower oil) with maleic anhydride to promote their chemical activation, and subsequently induce the reaction with polyethylene glycol diglycidyl ether (PEGDGE). The interactions between double bonds and/or hydroxyl groups present in vegetable oils, anhydrides and epoxy rings within a solvent-free medium promote the expected chemical crosslinking, yielding polymeric thermosets that encompass the Green Chemistry tenets. Fourier transform infrared spectroscopy, thermogravimetric analysis, and differential scanning calorimetry tests were employed to validate the chemical reactions taken place during the synthesis, as well as to monitor the kinetics of curing. Moreover, a rheological characterization was conducted to assess the influence of both the vegetable oil and the ratio of reactive components on the ultimate mechanical properties. Although chemical crosslinking was suitably attained in all the systems studied, a more reinforced network with values of the storage modulus (G’) of 54⋅10^5 Pa was obtained in those based on tung oil possessing the higher quantity of reactive functional sites; meanwhile, the presence of hydroxyl groups within the vegetable oil structure led to the production of more flexible thermosets (G’ of 6.2⋅10^5 Pa).Funding for open access charge: Universidad de Huelva / CBUA (Spain)Ingeniería Química, Química Física y Ciencias de los Materiale

Laboratorio virtual de microbiología veterinaria

Para el Proyecto de Innovación Educativa se ha realizado un CD como complemento a las prácticas de la Licenciatura de Veterinaria que tienen un componente microbiológico. Incluye aspectos fundamentales del ejercicio profesional (Toma de Muestras, Bioseguridad, Laboratorio de Virología), pero que con las infraestructuras actuales es casi imposible presentarlos al alumno de forma eficaz y personalizada. Para su desarrollo hemos elaborado el material escrito, apoyándolo con imágenes y videos explicativos. La confección del CD en sí ha sido realizada por una empresa de informática, siguiendo nuestras especificaciones y requerimientos

PROPUESTA DE INNOVACIÓN DIGITAL EN EL DEPARTAMENTO DE RECURSOS HUMANOS CASO PRÁCTICO APLICADO A UNA ASESORÍA LABORAL

Nuestro Trabajo Fin de Grado se fundamenta en el ámbito del marketing y la comunicación digital, y a su vez se implementa en el amplio mundo que conforman los Recursos Humanos. Se trata de dar forma a una idea innovadora; una asesoría online digitalizada. Para ello, hemos escogido como referencia una asesoría real con presencia en el mercado laboral, haciendo una propuesta de adaptación de sus procesos de trabajo a la era tecnológica. De esta forma se ha creado un nuevo departamento en la organización, el departamento de marketing y comunicación digital, que integrará los conceptos del área de Recursos Humanos como la contracción laboral, convenios y planes de promoción, así como la transformación y modernización de métodos de empleo adaptados a los tiempos modernos.<br /

The Escalada Formation: Characterization of a potential chert supply source in the Cantabrian Mountains (NW Spain) during prehistory

[EN] A study of the chert nodules found in the Escalada Formation (Carboniferous, Ponga region, Cantabrian Zone) was carried out as a means to characterise a number of lithic raw materials found in several prehistoric sites of the Cantabrian Mountains (NW Spain). This study comprises fieldwork aimed at locating the outcrops and obtaining samples. Some selected samples from two localities were used for both petrological (macroscopic and microscopic analyses from thin sections) and geochemical (X-ray fluorescence and powder diffraction) analysis. The macroscopic study shows a rather homogeneus coloration and a conchoidal fracture although two extreme types of cherts with a variety of intermediate forms can be differentiated according to the matrix composition. The microscopic analysis shows a high heterogeneity in carbonate versus silica percentage and gentle differences in some other features such as type of silica, origin of carbonates, occurrence of organic matter and type of skeletal components. The results of several geochemical analysis suggest that there are not geochemical features neither in the major elements nor in the traces that allows us to clearly distinguish between the analysed samples. All these studies allow us to define the main features of these chert nodules and to establish several types and varieties among them. Those varieties with high percentage of silica and with a more homogeneous matrix are the most suitable samples for knapping. These results together with the study of the geological and geographical location of archaeological sites suggest that the nodules from the Escalada Formation likely were lithic material supply sources used in knapping activities When aiming to demonstrate the use of these materials at archaeological sites the sole macroscopic analysis of the pieces does not suffice; further analyses, such as those involving thin sections, are necessary. The absence of chert from Escalada Formation in some Mesolithic sites in the area was confirmed via these additional analyses.SIThis study was supported by funds from project AF-87 “Análisis de industrias líticas prehistóricas: materias primas y tecnología” of the Vicerrectorado de Investigación (Universidad de León, Spain)