Sol-gel, One Technology by Produced Nanohybrid with Anticorrosive Properties

AbstractThe evolution of nanotechnology has been allowed modify the material properties since of chemical architecture. In this work, we development nanohybrids sol-gel process, silica particles are incorporated a functionalized polymer resin (type epoxy and/or phenolic) with carboxylic groups. When the metallic plate is coating formed film ceramic glass. The incorporation this particles into to polymeric matrix, allowed to obtain performance corrosive properties. The structural characteristics of the different materials prepared, phenolic resin (RF), the resin functionalized (RFF) and its corresponding hybrids (RF-SiO2 and RFF- SiO2), were studied by infrared spectroscopy and morphological changes were analyzed by scanning electron microscopy. Then cooper plates were coated with these materials to evaluate their corrosion performance. The corrosion performance evaluation for each of these coatings RF, RFF, RE- SiO2 and RFF- SiO2 were determined by the following tests: a misty saline chamber operated under accelerated corrosive conditions for corrosion advance measurement, abrasion and adhesion

Displasia fibrosa poliostótica. Presentación de un paciente

Polyostotic fibrous dysplasia is a benign fibro-osseous lesion in which the normal structure of the bone is replaced by fibrous tissue and by nonfunctional bony structures that show a trabecular aspect and have an unknown etiology. It is a very rare and infrequent disease on which there is little information in the literature. This situation has motivated us to report this case. It is hypothesized that there is a gene mutation encoding G alpha protein which is responsible for the condition. The surgical management of these cases is a challenge and it is also controversial. In this patient, it was reported an osteolytic lesion in both femoral necks that prevented proper ambulation and it was decided to conduct an inter-consultation with the Orthopedic Specialist for a better management. The patient underwent a hip computed tomography that confirmed the lesion and, subsequently, he underwent a biopsy that reported a polyostotic fibrous bone dysplasia. The dysplasia increases in size until general body growth ceases at the end of puberty.La displasia fibrosa poliostótica es una lesión osteofibrosa benigna en la que la arquitectura normal del hueso es remplazada por tejido fibroso y por estructuras óseas no funcionales de aspecto trabecular de etiología no conocida; es una enfermedad muy rara y poco frecuente sobre la que hay muy poca literatura, lo que ha motivado la presentación del paciente. Existen hipótesis de que es responsable una mutación de un gen que codifica la proteína G alfa. El manejo quirúrgico de estos casos es un reto y, además, es controversial. En este paciente se informó una lesión osteolítica de ambos cuellos femorales que impedía la correcta deambulación y se decidió hacer una interconsulta con el Especialista en Ortopedia para su mejor manejo; se le realizó una tomografía axial computadorizada de cadera que confirmó la lesión y, posteriormente, se le realizó una biopsia que informó una displasia ósea fibrosa poliostótica. La displasia aumenta de tamaño hasta que el crecimiento general del cuerpo cese al final de la pubertad

Una nota sobre encajes de subgrupos de productos de grupos topológicos

In this paper, we study $\omega$-narrow and $\omega$-balanced topological groups and prove they may be embedded as subgroups of products of second countable (resp, first countable) topological groups. We also prove that this kind of groups are closed with respect to the most common operations, such as the taking of subgroups, arbitrary products and under continuos homomorphic images. We finally prove that the class of $\omega$-balanced topological groups is  wider than the class of $\omega$-narrow topological groups.En este artículo se estudian los grupos topológicos $\omega$-estrechos y $\omega$-balanceados y se demuestra que se pueden encajar como subgrupos de productos de grupos topológicos segundo numerable o primero numerable respectivamente. Se prueba que estas clases de grupos son cerradas bajo las operaciones mas frecuentes en grupos topológicos, son cerradas bajo subgrupos, bajo productos arbitrarios y se conservan atravéz de homomorfismos continuos. Se muestra también que la clase de grupos topológicos $\omega$-balanceados es más amplia que la clase de grupos topológicos $\omega$-estrechos

Um modelo para armar: Uma proposta metodológica para abordar o estudo comparativo da história da saúde pública, das profissões da saúde e de suas relações de via dupla com a sociedade

Objetivo. El artículo presenta la propuesta teórico-metodológica que, a partir de elementos ya trabajados previamente, se construyó durante la primera fase de un proyecto de largo alcance que busca elaborar una historia comparada de la medicina y la salud pública en América Latina. Metodología. Para exponer dicha propuesta, en un primer momento se elabora un breve balance historiográfico de la literatura existente sobre la historia de la medicina y de la salud pública en América Latina; en un segundo momento, se plantea una reconfiguración del concepto de ‘campo de la salud’, basada en un análisis crítico del concepto, y que se va perfilando como el marco de referencia para un programa de investigación en estudios sociales de la salud de largo plazo, en la Universidad del Rosario, programa en el cual se enmarca este proyecto comparativo; y, en un tercer momento, se presentan los lineamientos generales de la propuesta sobre la que se sustentará el Proyecto. Resultados: Como resultado final se presenta una matriz que se estructuró a partir de todos los elementos teórico metodológicos articulados en este estudio historiográfico. Dicha matriz está compuesta de nueve atributos y sus correspondientes categorías, que se utilizarán para llevar a cabo la segunda fase del proyecto comparativo de la historia de la medicina y la salud pública. La matriz se usará tanto para guiar la búsqueda de la información histórica como para llevar a cabo el análisis y la comparación.Objetivo. O artigo apresenta a proposta teórico-metodológica que, a partir de elementos já trabalhados previamente, se construiu durante a primeira fase de um projeto de longo alcance que busca elaborar uma história comparada da medicina e a saúde pública na América Latina. Metodologia. Para expor dita proposta, em um primeiro momento elabora-se um breve balanço historiográfico da literatura existente sobre a história da medicina e da saúde pública na América Latina;em um segundo momento expõe-se uma reconfiguração do conceito de “campo da saúde”, baseada em uma análise crítica do conceito, e que vai-se perfilando como o marco de referencia para um Programa de Pesquisa em Estudos Sociais da Saúde de longo prazo, na Universidad del Rosario, programa no qual moldura-se este Projeto Comparativo; e em um terceiro momento, se apresentam os lineamentos gerais da proposta sobre a que se sustentará o Projeto. Resultados. Como resultado final apresenta-se uma matriz que se estruturou a partir de todos os elementos teórico-metodológicos articulados neste estudo historiográfico. Dita matriz está composta de nove atributos e suas categorias correspondentes, que se utilizarão para levar a cabo a segunda fase do projeto comparativo da história da medicina e a saúde pública. A matriz se usará tanto para guiar a busca da informação histórica quanto para levar a cabo a análise e a comparaçãoThe article shows the theoretical and methodological proposal that, grounded in previous studies, was built during the first phase of a long-term project that seeks to develop a comparative history of medicine and public health in Latin America. For laying out purposes, this article initially develops a brief historiographical overview of the literature on the history of medicine and public health in Latin America. It then proposes a reconfiguration of the ‘health field’ concept, based on a critical analysis of the concept, that begins to appear as a framework for a long term program of Social Studies of Health Research in El Rosario University, in which this comparative proposal is articulated. In a third moment, the article presents the general outlines of the proposal. As a final result, it presents a matrix to be used in the second phase of the comparative project of the history of medicine and public health in Latin America. It was structured upon all the theoretical and methodological elements discussed in this historiography study. This matrix was composed by nine attributes and their corresponding categories, which will be used as a guide to gather the historical records and to do the respective analysis and comparison

Noble metal nanoparticles used as carriers systems for NSAIDs drugs: SEF, release and binding

Peer Reviewe

Caracterización molecular de nanoportadores de fármacos mediante espectroscopía intensificada por plasmones localizados: Fluorescencia (SEF) y Raman (SERS)

The combined application of SERS (Surface-Enhanced Raman Scattering) and SEF (Surface Enhanced Fluorescence) to the molecular characterization of druǵs nanocarriers based on silver colloids is here shown for the antitumoral drug emodin, and the Non-Steroidal Anti-Inflammatory Drugs indomethacin and ketorolac. The system >silver nanoparticles-emodin> was subsequently embedded in porous silicon and the new system also characterized. The joint analysis of the SERS, SEF and UV-Vis spectra of indomethacin and ketorolac at different pHs has also allowed to propose schemes for the approaching mechanisms of the drug molecules to the silver nanoparticles surface in the pH range studied.© Sociedad Española de Óptica.Se agradece al MINECO (proyecto FIS2010-15405), a la Comunidad de Madrid (proyecto MICROSERES II-S 2009TIC-1476) y al Grupo Investigación 950247 de la UCM, la financiación recibida para llevar a cabo este trabajo.Peer Reviewe

HR Nuclear Magnetic Resonance Spectroscopy for Authentication of Olive Oil Quality

The present work is a preliminary study to settle the optimum experimental conditions and data processing for accomplishing the strategies established by the Action Plan for the EU olive oil sector. The objectives of the work were: a) to monitor the evolution of extra virgin olive oil exposed to indirect solar light in transparent glass bottles during four months; b) to identify spectral differences between edible and lampant virgin olive oil by applying high resolution Nuclear Magnetic Resonance (HR-NMR) Spectroscopy. Pr esent study could contribute to determine the date of minimum storage, their optimum conditions, and to properly characterize olive oil

Creatividad para la Innovación de la empresa Woods Lounge Bar del Municipio de Matagalpa, durante el año 2017

La investigación aborda la creatividad para la innovación de las pequeñas y medianas empresas (PYMES) del Departamento de Matagalpa, durante el año 2017, específicamente en la empresa Woods Lounge Bar, de la ciudad de Matagalpa, Departamento de Matagalpa, durante el año 2017. Este estudio está orientado a la realización del análisis sobre la creatividad para la innovación de la empresa de entretenimiento nocturno Woods Lounge Bar, donde se pretende destacar las características creativas que posee el personal; así como la identificación de los tipos de innovación implementados por la organización y de igual manera determinar las estrategias básicas para la innovación que utiliza dicha entidad. Poseer el conocimiento y la habilidad para la innovación es una capacidad importante para toda organización en la actualidad, ya que les permite mantenerse activo ante la competencia, es aquí donde surge la necesidad de este estudio, ya que servirá como una herramienta para fortalecer y mejorar todos los aspectos relacionados a la creatividad e innovación de la empresa, logrando así beneficios fundamentales como el conocimientos de aspectos sobresalientes como: satisfacción de las necesidades de los clientes y la comunicación interna entre gerente y colaboradores. Esta empresa se caracteriza por poseer un personal activo y eficiente, aplicando en dicha institución todos los tipos de creatividad como la habilidad de comunicación que abarca la creatividad plástica, sobresaliendo así el ser imaginativo como la mayor característica que posee el personal, lo que le ha permitido innovar en múltiples aspectos, tanto en sus productos, proceso

ELEMENTOS DE LOS MODELOS DETERMINANTES DEL CLIMA ORGANIZACIONAL

From importing the organizational climate has with in organizations, since it is the perception of human capital in relationtotheenvironment in which it is developed and share dwithco workers, is considered as a factor that reflects the facilities or obstaclesfacedby the worker to work in the employment context, for this reasonis considered extremely important and essential to have instrumentsto determine thelevel of organization alclimateperceivedby workers. There for edocumentaryre search, is ananalysis of the various existing measurement instruments in the literature regarding the organizational climate in differentareas (private companies, educational organizations, government agencies, health care organizations, and others) purpose. The importance of the analysis of the seinstruments is that they are indispensable to assessthe climate with in organization stool, there by generating strategies to directthea ctions, in orderto balance and achieve organizational behavior, group and individual positive. To measure the organizational climate has been identified in the literature to develop a largenumber of measuring instruments, amongwhichmay be mentione distheonepreparedby Mellado (2004), Chiang (2003), Brown and Leigh (1996) between other. They consider different dimensions of the work environment, such as individual responsibility, remuneration, risk and decisionmaking, support, tolerance, conflict, amongothers. The methodology consisted of literature review to identify various measurement instruments developed. Of which the definitions of organization alclimate addressed by the authors, measuring instruments, the oretical approaches, dimensions and values of validity and reliability in each were analyzed to determine if they are useful and feasible to apply to the Mexican contextd etermined by the investigat or according to the irinterests, stillarises at theend of the presentres earch findings and recommend ations for the selection and analysis instruments forme asuringorganizational climate, according to the type of organization, purposesassessment and identified organizational problems