Estudio Comparativo de la Osteosíntesis vs Artroplastia en el Tratamiento de las Fracturas Complejas de Cabeza Radial. Revisión bibliográfica.

[ES] La articulación del codo presenta una estructura compleja, aunque morfológicamente es una articulación única realmente las superficies articulares reflejan tres articulaciones en una: la húmero-cubital que es de tipo troclear, la radio-cubital proximal que es de tipo trocoide al completarse la superficie articular del cúbito (escotadura radial) con el ligamento anular y por último la húmero-radial, una enartrosis esférica que colabora en los movimientos propios del codo. Así mismo cuenta con varios ligamentos que dan estabilidad a la articulación: el ligamento colateral radial, el ligamento colateral cubital lateral, el ligamento anular y el ligamento colateral accesorio

Influence of the viscosity of poly(methyl methacrylate) on the cellular structure of nanocellular materials

Three different grades of poly(methyl methacrylate) (PMMA) with different rheological properties are used for the production of nanocellular materials using gas dissolution foaming. The influences of both the viscosity of the different polymers and the processing parameters on the final cellular structure are studied using a wide range of saturation and foaming conditions. Foaming conditions affect similarly all cellular materials. It is found that an increase of the foaming temperature results in less dense nanocellular materials, with higher cell nucleation densities. In addition, it is demonstrated that a lower viscosity leads to cellular polymers with a lower relative density but larger cell sizes and smaller cell nucleation densities, these differences being more noticeable for the conditions in which low solubilities are reached. It is possible to produce nanocellular materials with relative densities of 0.24 combined with cell sizes of 75 nm and cell nucleation densities of 1015 nuclei cm−3 using the PMMA with the lowest viscosity. In contrast, minimum cell sizes of around 14 nm and maximum cell nucleation densities of 3.5 × 1016 nuclei cm−3 with relative densities of 0.4 are obtained with the most viscous one. © 2019 Society of Chemical Industr

El derecho a la utopía : la murga en Mendoza

Fil: Trozzo, Ester. Universidad Nacional de Cuyo. Facultad de Artes y DiseñoFil: Rodríguez Consentino, Olga. Universidad Nacional de Cuyo. Facultad de Filosofía y Letra

Aproximaciones arqueométricas al estudio de los morteros de la antigüedad. Presupuestos metodológicos y ensayo de aplicación a la construcción romana del valle del Guadalquivir

Archaeometry today is a fully developed and well established discipline. In the case of mortars, however, perhaps its development has traditionally been more closely linked to the problems associated with the intervention and conservation of Cultural Assets. In any case, we should take advantage of that experience to explore in greater depth aspects of considerable importance for the characterisation of ancient construction processes and technological development; methods that, in the final analysis, inform us of socioeconomic structures and historical junctures at different moments and in different territories. The project, which has been developed around the architecture and construction of the Roman towns in the Guadalquivir Valley, has been an excellent laboratory in which to initiate research into areas of common interest in the fields of materials science and archaeology.Ministerio de Economía y Competitividad HAR2012-36963-C05-0

Gas dissolution foaming as a novel approach for the production of lightweight biocomposites of PHB/natural fibre fabrics

Producción CientíficaThe aim of this study is to propose and explore a novel approach for the production of cellular lightweight natural fibre, nonwoven, fabric-reinforced biocomposites by means of gas dissolution foaming from composite precursors of polyhydroxybutyrate-based matrix and flax fabric reinforcement. The main challenge is the development of a regular cellular structure in the polymeric matrix to reach a weight reduction while keeping a good fibre-matrix stress transfer and adhesion. The viability of the process is evaluated through the analysis of the cellular structure and morphology of the composites. The effect of matrix modification, nonwoven treatment, expansion temperature, and expansion pressure on the density and cellular structure of the cellular composites is evaluated. It was found that the nonwoven fabric plays a key role in the formation of a uniform cellular morphology, although limiting the maximum expansion ratio of the composites. Cellular composites with a significant reduction of weight (relative densities in the range 0.4–0.5) were successfully obtained.Ministerio de Educación y Formación Profesional (grants FPU12/05869 and EST14/00273)Ministerio de Economía, Industria y Competitividad - Fondo Europeo de Desarrollo Regional (grants BIA2014-59399-R and MAT2015-69234-R)Junta de Castilla y Leon (grant VA011U16

Imitadores de ictus: cuando las cosas no son lo que parecen

El ictus es una de las principales enfermedades en el mundo desarrollado. Teniendo en cuenta que el tratamiento fibrinolítico debe ser administrado durante un corto período de tiempo tras el episodio, el ictus constituye una emergencia médica que requiere un diagnóstico acertado precoz. Diversas enfermedades pueden ser difíciles de diferenciar del ictus, estos son los imitadores de ictus, cuya detección reviste especial importancia. En este estudio se ha realizado una revisión bibliográfica literaria acerca de los ictus y sus imitadores, buscando resumir la información de manera accesible y útil para la práctica clínica, ilustrando esta teoría con algunos casos reales. Hemos concluido que una exploración neurológica cuidadosa junto con las pruebas complementarias apropiadas permiten en la inmensa mayoría de las ocasiones obtener un diagnóstico correcto de ictus, reduciendo la confusión, lo cual implica evidentes beneficios de diverso tipo.Grado en Medicin

Low density polyethylene/silica nanocomposite foams. Relationship between chemical composition, particle dispersion, cellular structure and physical properties

Postprint (author's final draft

Impoliteness and Thematic Variation in Spanish Television Interviews

This paper analyses Spanish television interviews and presents a contrast between the impolite argumentative strategies employed by the interviewer to attack the image of the interviewee in interviews with politicians and celebrities. It aims to demonstrate how the topic addressed and the subtype of interview influence the strategies employed and degree of impoliteness shown by the interviewer. The analysis of our corpus has shown that the current television interview differs from the traditional format of this genre in a number of respects. Impoliteness is used in Spanish interviews in order to attract the audience and to build the journalist‟s face in political interviews as participants in ideological confrontation. Nevertheless, the detailed study of the impoliteness strategies employed by the interviewer has shown that the modification of features largely depends on the subtype examined. We observed in television celebrity interviews a wider range of strategies of verbal impoliteness, which are absent from political interviews. This explains why a variationist perspective has been adopted in the analysis of verbal impolitenes

Appropriation of ICTs by informal communities in metropolitan cities. The case of the "La Salada" market in the Latin American context

Informality is a characteristic feature of Latin American metropolises. In this context it is fitting to ponder the ways in which ICTs are appropriated and developed by informal communities. For this, the case of La Salada is proposed, the largest informal market in the region. Some of the questions that guide the analysis are as follows: Do these communities use and develop functional technologies for their own ends? Are they involved in processes of co-creation of technologies or technological innovation? Do they use social networks for specific ends? What are the effects of ICT integration, and do these strengthen community identity? Do they contribute in any way to formalising activities?Fil: Schiavo, Ester Clelia. Universidad de Buenos Aires. Facultad de Arquitectura, Diseño y Urbanismo; Argentina. Universidad Nacional de Quilmes; Argentina. Université de la Sorbonne Nouvelle; FranciaFil: Rodríguez, Sergio. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Quilmes; Argentina. Universidad de Buenos Aires; ArgentinaFil: Vera, Paula. Universidad Nacional de Rosario; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin