Intranet en el Canal 24 Horas: Los Sistemas Híbridos. El Último Paso Hacia la Televisión Digital

El objetivo de este trabajo es determinar los cambios producidos en el sistema tradicional de producción de programas informativos para televisión, al aplicarse en el las tecnologías de Intranet. Como se tratan los documentos en función de su naturaleza textual, numérica , alfanumérica, icónica,u audiovisual. Como se distribuye esta información a los distintos profesionales, y como en definitiva cambia la manera de trabajar y de organizarse la empresa

¿FOSSIL BONE OR SIMPLE ROCK? SPECTROSCOPY FTIR AND CRITERIATO FOSSILIZED BONE STRUCTURES IDENTIFICATION

Fossil record of marine vertebrates is very important to the reconstruction of systematic phylogenies,evolutionary and ecological studies, for this reason, any taphonomic element must be analyzed with quick and simple technical before it is discarded. In this study, was evaluated the biological origin of a similar structure to the vertebrae with Infrared spectroscopy analysis FTIR. The structure was collected in the Paja Formation(Cretaceous: Aptian) of the municipality of La Mesa de los Santos (Santander, Colombia). Samples of the outerlayer and the filling matrix were extracted using a microdrill. Along cow´s bone (Bos taurus) was used as a control sample to determine the spectrum of calcium phosphate. FTIR spectra allowed identification of differences inthe composition of the outer layer and the internal structure of the specimen. A response was found in the absorption ranges to calcium phosphate in the outer layer. The internal layer showed a greater composition ofcalcium carbonate. The FTIR technique allowed the recognition of calcium phosphate in this taphonomic entity.Current paleontological criteria determine that the morphology and the spectra IR not support the recognition of this element like fossil ossified structure due to the absence of the characteristic microstructure. Keywords: Aptian, Marine Reptile, Pseudofossil, Paja Formation.El registro fósil de vertebrados marinos es muy importante para la reconstrucción de filogenias sistemáticas, estudios ecológicos y evolutivos, por tal motivo, cualquier elemento tafonómico debe ser analizado con técnicas rápidas y sencillas antes de ser descartado. En este estudio se evaluó mediante análisis de espectroscopía de infrarrojos FTIR la procedencia biológica de una estructura similar a vértebras. Esta muestra fue colectada en la Formación Paja (Cretácico: Aptiano) en el municipio de La Mesa de los Santos (Santander, Colombia).Muestras de la capa externa y de la matriz de relleno del ejemplar fueron extraídas utilizando un microtaladro.Un hueso largo de vaca (Bos taurus) se usó como muestra control para la determinación del espectro del fosfato de calcio. Los espectros de FTIR permitieron identificar diferencias en la composición de la capa externa y la estructura interna del espécimen, encontrándose una respuesta en los rangos de absorción para el fosfato de calcio en la capa externa. La capa interna mostró una mayor composición en carbonato de calcio. La técnica de FTIR permitió la identificación de fosfato de calcio en esta entidad tafonómica. Los criterios paleontológicos actuales determinan que la morfología y los espectros de infrarrojos obtenidos no soportan el reconocimiento de este elemento como una estructura osificada fósil debido a la ausencia de la microestructura característica. Palabras Clave: Aptiano, Formación Paja, Pseudofósil, Reptiles marinos.   &nbsp

Viscoelastic characterization of a thermoplastic elastomer processed through material extrusion

Objective. We aim to characterize the viscoelastic behavior of Polyether-Block-Amide (PEBA 90A), provide reference values for the parameters of a constitutive model for the simulation of mechanical behaviors, and paying attention to the influence of the manufacturing conditions. Methods. Uniaxial relaxation tests of filaments of PEBA were used to determine the values of the parameters of a Prony series for a Quasi-Linear Visco-Elastic (QLVE) model. Additional, fast cyclic loading tests were used to corroborate the adequacy of the model under different test criteria in a second test situation. Results. The QLVE model predicts the results of the relaxation tests very accurately. In addition, the behavior inferred from this model fits very well with the measurements of fast cyclic loading tests. The viscoelastic behavior of PEBA under small strain polymer fits very well to a six-parameter QLVE model.Peer ReviewedPostprint (published version

¿FOSSIL BONE OR SIMPLE ROCK? SPECTROSCOPY FTIR AND CRITERIATO FOSSILIZED BONE STRUCTURES IDENTIFICATION

Fossil record of marine vertebrates is very important to the reconstruction of systematic phylogenies,evolutionary and ecological studies, for this reason, any taphonomic element must be analyzed with quick and simple technical before it is discarded. In this study, was evaluated the biological origin of a similar structure to the vertebrae with Infrared spectroscopy analysis FTIR. The structure was collected in the Paja Formation(Cretaceous: Aptian) of the municipality of La Mesa de los Santos (Santander, Colombia). Samples of the outerlayer and the filling matrix were extracted using a microdrill. Along cow´s bone (Bos taurus) was used as a control sample to determine the spectrum of calcium phosphate. FTIR spectra allowed identification of differences inthe composition of the outer layer and the internal structure of the specimen. A response was found in the absorption ranges to calcium phosphate in the outer layer. The internal layer showed a greater composition ofcalcium carbonate. The FTIR technique allowed the recognition of calcium phosphate in this taphonomic entity.Current paleontological criteria determine that the morphology and the spectra IR not support the recognition of this element like fossil ossified structure due to the absence of the characteristic microstructure. Keywords: Aptian, Marine Reptile, Pseudofossil, Paja Formation.El registro fósil de vertebrados marinos es muy importante para la reconstrucción de filogenias sistemáticas, estudios ecológicos y evolutivos, por tal motivo, cualquier elemento tafonómico debe ser analizado con técnicas rápidas y sencillas antes de ser descartado. En este estudio se evaluó mediante análisis de espectroscopía de infrarrojos FTIR la procedencia biológica de una estructura similar a vértebras. Esta muestra fue colectada en la Formación Paja (Cretácico: Aptiano) en el municipio de La Mesa de los Santos (Santander, Colombia).Muestras de la capa externa y de la matriz de relleno del ejemplar fueron extraídas utilizando un microtaladro.Un hueso largo de vaca (Bos taurus) se usó como muestra control para la determinación del espectro del fosfato de calcio. Los espectros de FTIR permitieron identificar diferencias en la composición de la capa externa y la estructura interna del espécimen, encontrándose una respuesta en los rangos de absorción para el fosfato de calcio en la capa externa. La capa interna mostró una mayor composición en carbonato de calcio. La técnica de FTIR permitió la identificación de fosfato de calcio en esta entidad tafonómica. Los criterios paleontológicos actuales determinan que la morfología y los espectros de infrarrojos obtenidos no soportan el reconocimiento de este elemento como una estructura osificada fósil debido a la ausencia de la microestructura característica. Palabras Clave: Aptiano, Formación Paja, Pseudofósil, Reptiles marinos.   &nbsp

Impact of printing orientation on inter and intra-layer bonds in 3D printed thermoplastic elastomers: a study using acoustic emission and tensile tests

The use of the Material Extrusion technique with Thermoplastic Elastomers is currently growing because of the large number of benefits of this family of materials. They are processable materials with high flexibility, which makes them very useful, for example, in biomedical applications that require flexible objects with complex geometries. This study aims to characterize a specific polymer, namely polyether-block-amide-based polymer (PEBA), by analyzing its anisotropic behavior in printed samples and investigating the mechanical properties based on different printing orientations. Three orientations (X, Y, and Z) were used to relate the printing orientation to the type of bonds formed in the samples: intra-layer bonds, inter-layer bonds, and the deposited filament. Tensile tests following ASTM D638 were conducted to measure sample rigidity, while Acoustic Emission, an advanced Non-Destructive Technique, was employed to examine the trend of the failure process. The presence of voids was also observed to assess printing quality, which is influenced by the printing orientation and alters the quality of bonds. The results revealed that samples printed horizontally exhibited higher Young’s Modulus values and fewer voids in the inner parts. Vertically printed samples displayed inferior mechanical properties and a greater number of voids. Consequently, the intra-layer yielded better bond formation and minimized voids. Acoustic Emission analysis corroborated these findings by demonstrating distinct energy distribution patterns among the different printing orientations. Hits were concentrated at maximum stresses, primarily observed in the vertically printed samples, which experienced macroscopic failure. Furthermore, this particular specimen exhibited a vertical asymptote near the maximum stress level. The analysis of the energy of Acoustic Emission hits demonstrated a reasonably good fit with the Gutenberg-Richter (GBR) law based on the printing direction.Peer ReviewedObjectius de Desenvolupament Sostenible::9 - Indústria, Innovació i InfraestructuraPostprint (published version

Pollution and physiological variability in gentoo penguins at two rookeries with different levels of human visitation

Human activity and specifically tourism has been increasing in Antarctica over the last few years. Few studies have examined the indirect effects of human visits on Antarctic penguin rookeries. This work aims to study the differences between a highly visited (Hannah Point) and a rarely visited (Devil's Point, Byers Peninsula) gentoo penguin rookery on Livingston Island. Our results suggest that potential indirect effects of human impact are observed in gentoo penguins at Hannah Point, a colony heavily visited by tourists. Penguins at Hannah Point showed a higher presence of heavy metals such as Pb and Ni and a higher number of erythrocytic nuclear abnormalities than penguins at Devil's Point. Immunological parameters showed different results depending on whether we consider the cellular response -the number of lymphocytes being higher in penguins from Hannah Point- or the humoral response -the level of immunoglobulins being higher in penguins from Devil's Point. Measurements of corticosterone levels in feathers and heterophil/lymphocyte (H/L) ratio in blood showed lower levels in the heavily visited rookery than in the rarely visited rookery. Finally, we did not detect Campylobacter jejuni, a bacteria potentially transmitted by humans in either of the populations and we did not find any difference in the prevalence of Campylobacter lari between the populations.Centro de Estudios Parasitológicos y de Vectore

I Congresso Ibero-Americano de Bibliotecas Escolares

Actas de la primera edición del I Congreso Iberoamericano de Bibliotecas Escolares, CIBES 2015, organizado por la Universidad Carlos III de Madrid (España), la Universidad Estatal Paulista (Brasil) y el Ayuntamiento de Getafe (España). Celebrado: 21 - 23 de octubre de 2015 en la Universidad Estatal Paulista (Marília) y 26 - 28 de octubre de 2015 en la Universidad Carlos III de Madrid (Getafe)Universidad Carlos III de Madrid (España)Universidad Estatal Paulista (Brasil)Ayuntamiento de Getafe (España)Dimensiones y visiones de la biblioteca escolar en una Educación por competencias: la necesidad de una política estratégica / Miguel Ángel Marzal. -- Getafe ciudad educadora, lectora y escritora: Bibliotecas escolares / Lourdes Muñoz Santiuste. -- Presente y futuro: biblioteca escolar-CREA y proyectos interdisciplinares / Rosa Piquín. -- Cultura en información: un reto esencial de la biblioteca escolar / Mónica Baró. -- Bibliotecas escolares de Galicia: un mundo de oportunidades a favor de la Educación / Cristina Novoa. -- 10 años de la Red de Bibliotecas Escolares de Extremadura (REBEX) / Casildo Macías Pereira. -- Biblioteca Escolar y uso ético de la información para una Cultura de Paz / Ana Barrero Tíscar. -- Dinamización de la Biblioteca Escolar Plumita durante el curso escolar 2014/15 / María Antonia Cano Cañada. -- Experiencia de la creación de una biblioteca escolar / Susana Santos Martín. -- Grupo cooperativo Bibliotecas escolares en Red-Albacete / José Manuel Garrido Argandoña y Eva Leal Scasso. -- La BCREA "Juan Leiva". El fomento de la lectura desde la web social / Andrés Pulido Villar. -- Proceso de implantación de una herramienta de autoevaluación en la red de bibliotecas escolares de Extremadura (REBEX) / Casildo Macías Pereira. -- La biblioteca escolar: abriendo fronteras / Lorena Verónica Cabrera Orellana. -- O programa RBE e a avaliaçao das bibliotecas escolares: melhoria, desenvolvimiento e innovaçao / Elsa Conde. -- Profesional de Biblioteconomía y Documentación: esencial en la plantilla de la escuela / Pilar del Campo Puerta. -- Una mirada activa al proceso educativo desde la biblioteca escolar / María Jesús Fontela Fernández . -- Con otra mirada "La ilustración como vehículo de comunicación y aprendizaje en las bibliotecas escolares" / Pablo Jurado Sánchez-Galán. -- Fingertips. Recriar a biblioteca escolar na sala de aula / Rui Alfonso Mateus. -- Hablemos de libros. Cómo transformar una clase de literatura en una comunidad de interpretación de textos / Francisco César Díaz Rey. -- Inclusión social de familias inmigrantes a través de un programa de aprendizaje de la lengua castellana / Ana Carmen Tolino Fernández-Henarejos. -- O desenvolvimento de atividades de mediação de leitura em biblioteca escolar: o caso da biblioteca da Escola Sesc de Ensino Médio / Vagner Amaro. -- La biblioteca escolar. Proceso de enseñanza-aprendizaje de padres a hijos / Ana Carmen Tolino Fernández- Henarejos. -- Leo con y para los demás / Ismael Fernández Fernández, Ana María Moreno Vicente y Ana Beatriz Vicente Pérez. -- Nanas y arrullo. Poesía a la deriva / Bernardo Fuentes Navarrete y Carlos García-Romeral Pérez. -- Gestión y evaluación de servicios bibliotecarios para personas con dislexia: una biblioteca escolar inclusiva desde una perspectiva internacional / Carmen Jorge García-Reyes. -- Sueños lectores compartidos hechos realidad: la biblioteca escolar del C.E.I.P-S.E.S-A.A “LA PAZ” de Albacete / Ana Rosa Cabañero Tobarra, Juan Manuel Herráez, Eva Leal Scasso, María Marín Sánchez, Ana Belén Medrano Martínez y María José Nortes Ruipérez. -- El programa biblioteca escuela en Civican. La literatura como elemento motivador para la alfabetización informacional / Villar Arellano Yanguas. -- La competencia digital en el diseño curricular: desde la biblioteca al aula / Felicidad Campal García. -- O deselvomimento da pesquisa escolar por meio da competência em informaçao / Luciane de Fátima Cavalcante Beckman y Marta Leandro da Mata. -- Proyecto escolar de investigación documental "Te pillé leyendo" / José Manuel Garrido Argandoña. -- Aprender com a Biblioteca Escolar: formar para as literacias / Paula Correia y Isabel Mendinhos. -- Sucedió en el siglo XX / María Antonia Becerra Montalbán, Ángel Bernabé Muñoz y Sofía Vaz Romero. -- El Club de lectura en la nube / Belén Benito Blázquez y Ana Ordás García. -- Promover a leitura e a escrita na era digital: prácticas nas bibliotecas escolares / María Raquel Ramos. -- A biblioteca escolar e o desafío da interculturalidade: o projeto Ser + cidadao / María da Conceição Tomé. -- Cuando la competencia digital encontró a la alfabetización informacional o Mucho ruido y pocas nueces / Felicidad Campal García. -- Hora de ler, un programa para el fomento de la lectura en contexto educativo / Cristina Novoa. -- Hábitos de lectura para las competencias en información y alfabetización en información en bibliotecas escolares de Puerto Rico / Karen Denise Centeno Casillas. -- Repositorios digitales en las bibliotecas escolares andaluzas: situación, modelos y herramientas para su creación / Dolores Olmos Olmos y Andrés Pulido Villar. -- Trabajando las competencias clave con las aventuras de Mozarito en Extremadura / María Teresa Carballosa González y María Esther Nieto Vidal. -- Análisis de modelos de evaluación de la web de la biblioteca escolar / Raúl Cremades García. -- Emociónate con las historias: El bosque de las emociones e historias con mucho teatro / Esther Luis Pérez y Ana María Peromingo Fernández. -- Biblioteca escolar de innovación y continuación / E. María Guerrero Palacios y Silvia Mora Ramírez. -- Uso de estándares y licencias para la creación y difusión de contenidos en las bibliotecas escolares / José Luis Barreiro Cebey. -- La biblioteca escolar digital móvil / Javier Fernández Delgado. -- Uso de aplicaciones móviles para el desarrollo de la competencia lingüística. Proyecto Hansel App Gretel / Dolores Olmos Olmos. -- A memória e a mediação segundo Vigotski / Leda Maria Araújo, Patricia Celia Santana, Sueli Bortolin y Leticia Gorri Molina. -- Bibliotecas escolares como tema de estudo dos alunos de graduação em blioteconomia do Instituto de Ensino Superior da FUNLEC: estado da arte / Tiago Pereira Nocera y Rodrigo Pereira. -- Ações de mediação da leitura e da informação em bibliotecas escolares: um olhar sobre as bibliotecas dos Colégios de Aplicação / Tatyanne Christina Gonçalves Ferreira Valdez y Alberto Calil Júnior. -- Mediação pedagógica numa biblioteca de escola pública em Londrina / Rovilson José da Silva, Teba Silva Yllana y Sueli Bortolin. -- Utilização de categorias por cores em sistema de biblioteca voltado ao público infanto-juvenil / Liliana Giusti Serra. -- Atividades de ensino dos atos de leitura com crianças em risco social / Adriana Naomi Fukushima da Silva y Dagoberto Buim Arena. -- Biblioteca escolar: espaço de significados entre alunos, professores e bibliotecários / Rodrigo Barbosa Paulo, Marisa Xavier, Helen Castro Casarin y Creuza Barbaroto. -- A Biblioteca Escolar no Contexto da Legislação e do Processo Educativo / Eliane Lourdes da Silva Moro, Francisca Rosaline Leite Mota y Raimundo Martins de Lima. -- O jornal impresso como fonte de informação: a importância da formação de leitores críticos / Mariana Pícaro Cerigatto. -- Bibliotecas escolares no estado do Rio Grande do Sul: a trajetória de realização dos fóruns gaúchos pela melhoria das bibliotecas escolares / Eliane Lourdes da Silva Moro y Lizandra Brasil Estabel. -- O acesso à informação dos usuários surdos na biblioteca escolar / André Luís Onório Coneglian y Mayara Melo Santana. -- Aprendizagem coletiva de bibliotecários e a competência de pesquisa dos docentes: o caso do Instituto Federal do Espírito Santo / Maristela Almeida Mercandeli Rodrigues y Beatriz Quiroz Villardi. -- Biblioteca escolar: atores, parâmetros e competências / Mavi Galante Mancera Dall´Acqua Carvalho y Claudio Marcondes de Castro Filho. -- Estratégias de aprendizagem de escrita no Ensino Fundamental II / Érika Christina Kohle. -- Bebês e livros: leitura nas bebetecas. Kenia Adriana de Aquino Modesto Silva, Juliane Francischeti Martins Motoyama y Renata Junqueira de Souza. -- Práticas alternativas para organização de acervos nos espaços de leitura em ambientes escolares / Luciana Souza Gracioso, Ariovaldo Alves, Débora Nascimento, Suelen Redondo, Tainara Torika Kiri de Castro, Elizabete Angelon y Eduardo Barbosa. -- Reflexões sobre a modelagem e criação de uma Rede Virtual de Leitores para Bibliotecas Escolares / Carla Floriana Martins y Raoni Guerra Rajão. -- Biblioteca escolar: espaço de formação leitora? / Silvana Ferreira de Souza Balsan y Renata Junqueira de Souza. -- “Se a Biblioteca Escolar é minha mãe, o Google é meu pai”: representações da relação entre Biblioteca Escolar e Google no imaginário de alunos do ensino técnico / Adriana Bogliolo Sirihal-Duarte, Maria L. Amorim Antunes y Raquel Miranda Vilela Paiva. -- Desafios e propostas para a universalização das bibliotecas escolares no Brasil e na Espanha / Rodrigo Pereira, Daniela Spudeit y Fernanda de Sales. -- Bibliotecário educador: possibilidades de atuação no contexto da biblioteca escolar / André Carlos da Silva, Valéria Martin Valls y Mariana de Paula Silva. -- Uma ONG para Bibliotecas Escolares : estratégia para ampliar a igualdade e capacidade de acesso e uso da informação e educação escolar de qualidade / Suelen Camilo Ferreira y Luciana de Souza Gracioso. -- O aluno com deficência: o papel do bibliotecário na disponibilidade de recursos acessíveis na biblioteca escolar / Adriano de Sales Coelho, Rosilene de Melo Oliveira y Marcos Pastana Santos. -- Biblioteca digital virtual e o uso do tablete: uma possibilidade de construção de novas práticas de leitura na escola / Barbara Cibelli da Silva Monteagudo y Dagoberto Buim Arena. -- A importância da biblioteca na educação de crianças de 0 a 3 anos / Yngrid Karolline Mendonça Costa y Cyntia Graziella Guizelim Simões Girotto. -- Comportamento Informacional de adolescentes: a relação com bibliotecas e escolas / Nelson Sebastian Silva-Jerez y Helen de Castro S. Casarin

Current state and tendencies of development of robotization of welding production (review)

Translated from Russian (Report of the E.O. Paton Electric Welding Inst., Kiev, 1996)Available from British Library Document Supply Centre-DSC:9023.190(VR-Trans--8208)T / BLDSC - British Library Document Supply CentreSIGLEGBUnited Kingdo

Characterization of cutting parameters in the minimum quantity lubricant (MQL) machining process of a gearbox

This paper aims to find the key process parameters for machining different parts of an automobile gearbox, commissioned by a company that needs to replace with the MQL lubrication system their current machining process based on cutting fluids. It particularly focuses on the definition of appropriate cutting parameters for machining under the MQL condition through a statistical method of Design of Experiments (DOE). Using a combination of recommended parameters, significant improvements in the surface roughness of different machined parts are shown. Production costs are also reduced by decreasing expenses on lubricants and by optimizing the cycle time reached under the new cutting conditions, what would help the implementing company to increase its profits and adapt to a modern sustainability-demanding production industry

Effect of the presence and location of corpus luteum on competence of bovine cumulus-oocyte complexes

This study aimed to determine the effect of presence of the corpus luteum (CL) and its influence on cumulus–oocyte complexes (COCs) obtained from the ipsilateral or contralateral ovary in bovine on the recovery and capacity of the oocytes to sustain mono-spermic fertilization, undergo preimplantation development, and develop to the blastocyst stage. Ovaries were collected at a local slaughterhouse and kept in pairs corresponding to the same animal. In the first experiment the variables evaluated were compared between cows with (CCL+) and without (CCL-) CL, and for the second experiment, comparisons were made between ovaries with an ipsilateral (CL+), contralateral (CL−), and no (NCL). The recovery rate of COCs was higher in ovaries from CCL− cows, and a higher proportion of grade 1 COCs were recovered from this group. A higher proportion of metaphase I oocytes at 7 h of maturation, and a higher rate of cleavage were observed in the CCL+ group; however, a higher proportion of embryos were obtained from the CCL− group. Besides, COCs from the CL+ group had a lower proportion of grades 1 and 2 morphological qualities, lower rate of metaphase II oocytes at 22 h of maturation, and lower rate of formation of two pronuclei, whereas a higher proportion of unfertilized oocytes after in vitro fertilization. On the other hand, the COCs from the CL− group displayed a lower proportion of oocytes with more than two pronuclei, higher cleavage rate, and higher final blastocyst production were obtained when compared to CL+. Thus, the effects of CL on the competence of bovine COCs are different depending on the anatomical proximity of their location in the animal, negatively affecting the quality of COCs located in the same ovary, but not having negative effects on the competence of COCs in the ovaries contralateral to their location. © The Author(s). This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.Incluye referencias bibliográficas