Diseño de estrategias en relaciones públicas de la Base Aérea Cotopaxi y su vinculación con la sociedad

Este trabajo fue realizado con el propósito de aportar al Departamento de Relaciones Públicas de la Base Aérea “Cotopaxi” con el diseño de nuevas estrategias, que permitan una óptima ejecución de las tareas asignadas y propias de su función

Novel Resorbable and Osteoconductive Calcium Silicophosphate Scaffold Induced Bone Formation

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/).Abstract: This aim of this research was to develop a novel ceramic scaffold to evaluate the response of bone after ceramic implantation in New Zealand (NZ) rabbits. Ceramics were prepared by the polymer replication method and inserted into NZ rabbits. Macroporous scaffolds with interconnected round-shaped pores (0.5–1.5 mm = were prepared). The scaffold acted as a physical support where cells with osteoblastic capability were found to migrate, develop processes, and newly immature and mature bone tissue colonized on the surface (initially) and in the material’s interior. The new ceramic induced about 62.18% ± 2.28% of new bone and almost complete degradation after six healing months. An elemental analysis showed that the gradual diffusion of Ca and Si ions from scaffolds into newly formed bone formed part of the biomaterial’s resorption process. Histological and radiological studies demonstrated that this porous ceramic scaffold showed biocompatibility and excellent osteointegration and osteoinductive capacity, with no interposition of fibrous tissue between the implanted material and the hematopoietic bone marrow interphase, nor any immune response after six months of implantation. No histological changes were observed in the various organs studied (para-aortic lymph nodes, liver, kidney and lung) as a result of degradation products being released.Odontologí

Antioxidants Properties and Effect of Processing Methods on Bioactive Compounds of Legumes

Extensive research has proven that fruits and vegetables contribute significantly to the body supply of bioactive compounds due to their antioxidant activity to protect organisms against harmful effects of oxygen radicals. A special case is the legumes that are also rich source of proteins, dietary fiber, micronutrients, and bioactive phytochemicals. Many legume species are still an irreplaceable source of dietary proteins for humans, especially in the mainly vegetarian diets of developing countries. Incorporation of leguminous seeds into the human diet can offer protective effects against chronic diseases because they contain a number of bioactive substances including phenolics that can increase protein digestibility and mineral bioavailability. However, technological processing and seed germination can impact the levels of natural endogenous antioxidants (e.g., phenolics, tocopherols; vitamin C) in leguminous seeds. Therefore, this chapter is a review about reports of antioxidant properties and their relationship with their total phenolic content of the most commonly consumed legumes. Researches about changes in the content of natural antioxidants during technological processing are included as well as some clinical reports concerning to the health benefits offered by legumes of higher consumption

Implant Stability of Biological Hydroxyapatites Used in Dentistry

The aim of the present study was to monitor implant stability after sinus floor elevation with two biomaterials during the first six months of healing by resonance frequency analysis (RFA), and how physico-chemical properties affect the implant stability quotient (ISQ) at the placement and healing sites. Bilateral maxillary sinus augmentation was performed in 10 patients in a split-mouth design using a bobine HA (BBM) as a control and porcine HA (PBM). Six months after sinus lifting, 60 implants were placed in the posterior maxilla. The ISQ was recorded on the day of surgery from RFA at T1 (baseline), T2 (three months), and T3 (six months). Statistically significant differences were found in the ISQ values during the evaluation period. The ISQ (baseline) was 63.8 ± 2.97 for BBM and 62.6 ± 2.11 for PBM. The ISQ (T2) was ~73.5 ± 4.21 and 67 ± 4.99, respectively. The ISQ (T3) was ~74.65 ± 2.93 and 72.9 ± 2.63, respectively. All of the used HAs provide osseointegration and statistical increases in the ISQ at baseline, T2 and T3 (follow-up), respectively. The BBM, sintered at high temperature with high crystallinity and low porosity, presented higher stability, which demonstrates that variations in the physico-chemical properties of a bone substitute material clearly influence implant stability.Odontologí

Comparison of Two Xenograft Materials Used in Sinus Lift Procedures: Material Characterization and In Vivo Behavior

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).Abstract: Detailed information about graft material characteristic is crucial to evaluate their clinical outcomes. The present study evaluates the physico-chemical characteristics of two xenografts manufactured on an industrial scale deproteinized at different temperatures (non-sintered and sintered) in accordance with a protocol previously used in sinus lift procedures. It compares how the physico-chemical properties influence the material’s performance in vivo by a histomorphometric study in retrieved bone biopsies following maxillary sinus augmentation in 10 clinical cases. An X-ray diffraction analysis revealed the typical structure of hydroxyapatite (HA) for both materials. Both xenografts were porous and exhibited intraparticle pores. Strong differences were observed in terms of porosity, crystallinity, and calcium/phosphate. Histomorphometric measurements on the bone biopsies showed statistically significant differences. The physic-chemical assessment of both xenografts, made in accordance with the protocol developed on an industrial scale, confirmed that these products present excellent biocompatibilitity, with similar characteristics to natural bone. The sintered HA xenografts exhibited greater osteoconductivity, but were not completely resorbable (30.80 ± 0.88% residual material). The non-sintered HA xenografts induced about 25.92 ± 1.61% of new bone and a high level of degradation after six months of implantation. Differences in the physico-chemical characteristics found between the two HA xenografts determined a different behavior for this material.Odontologí

Review of dynamic line rating systems for wind power integration

When a wind power system is connected to a network point there is a limit of power generation based on the characteristics of the network and the loads connected to it. Traditionally, transmission line limits are estimated conservatively assuming unfavourable weather conditions (high ambient temperature, full sun and low wind speed). However, the transmission capacity of an overhead line increases when wind speed is high, due to the cooling caused by wind in the distribution lines. Dynamic line rating (DLR) systems allow monitoring real weather conditions and calculating the real capacity of lines. Thus, when planning wind power integration, if dynamic line limits are considered instead of the conservative and static limits, estimated capacity increases. This article reviews all technologies developed for real-time monitoring during the last thirty years, as well as some case studies around the world, and brings out the benefits and technical limitations of employing dynamic line rating on overhead lines. Further, the use of these DLR systems in wind integration is reviewed.This work is financially supported by the Ministerio de Economía y Competitividad under the project DPI2013-44502-R and the Eusko Jaurlaritza under the project SAI12/103

Metodología ágil en el diseño e implantación de un Máster en Ingeniería Informática

Tras la vorágine de las renovaciones y nuevos diseños de todas las titulaciones universitarias, llegan momentos de calma, de análisis y de reflexión. Los másteres caracterizarán a las universidades. Y aunque el Máster en Ingeniería Informática sigue unas fichas comunes, debe imbricarse con la universidad y el contexto social en el que se implanta. En este artículo se hace uso de los conceptos de las metodologías ágiles para describir el proceso de diseño e implantación del Máster en Ingeniería Informática de la Escuela Politécnica Superior de la Universidad de Alicante. Desde su implantación este Máster ha seguido un proceso de mejora continua, identificando, en cada curso, los posibles aspectos de mejora a partir de la información recogida durante los cursos anteriores y las propuestas para realizar dichas mejoras para los cursos siguientes. Se pretende en este artículo describir las experiencias, lecciones aprendidas y futuros pasos encaminados a afianzar este proceso de mejora continua del Máster en Ingeniería Informática

Interaction strategies in the development of the productive skill of the English language speech

El objetivo de la Investigación fue la aplicación de estrategias de interacción para mejorar el desarrollo de la destreza productiva del habla del idioma inglés en los estudiantes de segundo semestre de la Carrera de Cultura Física de la Facultad de Ciencias de la Salud de la Universidad Nacional de Chimborazo. Para ello, la investigación fue de carácter correlacional, de campo, con métodos: inductivo, deductivo, analítico y sintético. La muestra estuvo representada por 50 estudiantes, a quienes se les aplicó un plan de intervención basado en un método comunicativo, compuesto por un conjunto de actividades orientadas a conversaciones, diálogos y debates. Para la obtención de los datos, se aplicó un instrumento o rúbrica antes y después del aplicar el plan de intervención. En primera instancia se evaluaron los conocimientos previos, mientras que en el post test se evaluaron los conocimientos una vez que se aplicó la intervención. Se formularon tres hipótesis específicas y una general basadas en variables y dimensiones con relación al contexto de la investigación. Los datos obtenidos a través de la intervención, fueron tabulados analizados, interpretados y sometidos a una prueba estadística, que permitió establecer que los métodos y técnicas utilizadas contribuyeron en el aprendizaje; además que se mejoró y se desarrolló la destreza productiva del habla del idioma inglés al usar las estrategias de interacción a través de técnicas activas. The objective of the investigation was the application of interaction strategies to improve the development of the productive skill of the speech of the English language in the students of second semester of the Career of Physical Culture of the Faculty of Health Sciences of the National University of Chimborazo. For this, the research was correlational, field research, with methods: inductive, deductive, analytical and synthetic. The sample was represented by 50 students, to whom an intervention plan based on a communicative method was applied, consisting of a set of activities oriented to conversations, dialogues and debates. To obtain the data, an instrument or rubric was applied before and after applying the intervention plan. In the first instance the previous knowledge was evaluated, while in the post test the knowledge was evaluated once the intervention was applied. Three specific and one general hypothesis were formulated based on variables and dimensions in relation to the research context. The data obtained through the intervention were tabulated analyzed, interpreted and subjected to a statistical test, which allowed establishing that the methods and techniques used contributed to the learning; in addition, the productive ability of English language speech was improved and developed by using interaction strategies through active techniques