785 research outputs found

    Translations, un poema audiovisual

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    [EN] Translation, in English, is a term that defines, on the one hand, the act of translating from one language to another, and on the other, the act of moving from one place to another. Weaving a game with the double meaning of this expression, the synthesis of this audiovisual essay is based within an introspective dynamic, in defining the link between two cultures, and two places; Galicia and Korea, through an intimate look in which the subaltern subject is compensated. Starting from the East-West construct, as Edward Said explains, the East is seen as an amalgam in which the mystical and the exotic are observed with desire, always from a superior position. The term is in itself a way of reaffirming himself; the, white, European, Christian and endocentric man, in front of the rest. Taking these concepts as a way of understanding the subjective identity of a migrant woman, the structure of this experimentation is based on a series of interventions in the landscape, in different territories. In this way, a portable and removable structure is placed in a forest, a stream or a lake. These spaces hide places where people once settled, but today they remain forgotten. The color white and its meanings in the folklore of both cultures; purity, life, fragility or death, will ultimately serve as a backbone that gives meaning to the sequence of images and sounds, which are interrelated through this comparative analysis.[ES] Translation, en inglés, es un término que define, por una parte, el acto de traducir de un idioma a otro, y por otra, el de trasladar de un lugar a otro. Urdiendo un juego con el doble sentido de esta expresión, la síntesis de este ensayo audiovisual se basa dentro de una dinámica introspectiva, en definir el vínculo entre dos culturas, y dos lugares; Galicia y Corea, a través de una mirada íntima en la que se resarza al sujeto subalterno. Partiendo del constructo Oriente-Occidente, como explica Edward Saíd, el primero es visto como un amalgama en el que lo místico y lo exótico se observan con deseo, siempre desde una posición superior. El término se trata en sí mismo de una forma de reafirmarse a sí mismo; al hombre, blanco, europeo, cristiano y endocéntrico, frente al resto. En consecuencia, tomando estos conceptos como una forma de comprender la propia identidad subjetiva de una mujer migrante, la estructura de esta experimentación se basa en una serie de intervenciones en el paisaje, en distintos territorios. De este modo, una estructura portátil y desmontable es colocada en un bosque, un arroyo o un lago. Estos espacios, esconden lugares en los que las personas se asentaron antaño, pero hoy permanecen olvidados. El color blanco y sus significaciones en el folclore de ambas culturas; pureza, vida, fragilidad o muerte, servirán, en definitiva, de elemento vertebrador que da sentido a la secuencia de imágenes y sonidos, las cuales se interrelacionan a través de este análisis comparativo.Kim, JY.; Rodríguez Arias, ÁM. (2022). Translations, un poema audiovisual. En EShID2021 - II Congreso Internacional Estéticas Híbridas de la Imagen en Movimiento: Identidad y Patrimonio. Editorial Universitat Politècnica de València. 273-281. https://doi.org/10.4995/EShID2021.2021.13225OCS27328

    For Eternity. Methodology of a public art project

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    [EN] The following article contains the conceptual and design process of the work For Eternity (2021), exhibited in the call Art Públic/Universitat Pública. This project connects the problem of the degradation time of plastics in the environment, linking it with the transcendent conception of eternity. Therefore, we carry out an experiential exploration of the concept, focused on raising awareness of how it is necessary to take sustainability into account in socio-scientific advances, configuring underlying disciplines that complement each other in trans disciplinary knowledge. The main objective is to ultimately be able to conceive the artistic process as a path to acknowledge the ecosophy.[ES] Estableciendo un vínculo entre la perdurabilidad del plástico y su impacto ambiental con el entorno; esta práctica artística señala, a través de la imagen en el espacio público, el concepto de eternidad. A raíz de un análisis experimental del término, se enfoca en aplicar la ética de la sostenibilidad y su necesidad de ser implementada en el ámbito científico y social. Siguiendo la premisa de Guattari dentro de su definición de la ecosofía (Guattari, 1996), las disciplinas subyacentes a crear una bioética pasan por un saber transversal, en el que el medio ambiente se configure a través del estudio de la sociedad y su subjetividad. En este sentido, planteamos For Eternity como una necesidad de pararse a ver, y más dentro de un lugar como la universidad, el detritus que generamos y como éste afecta al entorno.Este proyecto ha sido expuesto en la muestra Art Public / Universitat Pública 2021. De este modo, se plantea esta comunicación en el congreso ANIAV como un análisis metodológico de las distintas fases del proceso artístico; incidiendo en la relación de sostenibilidad con el arte público.Rodríguez Arias, ÁM.; Kim, JY. (2022). For Eternity; metodología de un proyecto de arte público. Editorial Universitat Politècnica de València. 431-437. https://doi.org/10.4995/ANIAV2022.2022.15502OCS43143

    A Case of Intravitreal Bevacizumab Injection for the Treatment of Choroidal Neovascularization in Angioid Streaks

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    A 56-year-old Korean woman presented with decreased visual acuity of the right eye. She had a history of two photodynamic therapy treatments for choroidal neovascularization (CNV) due to angioid streaks in her left eye with central scarring and low visual acuity. She was diagnosed with subfoveal CNV due to angioid streaks in her right eye and treated with six intravitreal bevacizumab (1.25 mg / 0.05 mL) injections over one year. Best corrected visual acuity improved from 20 / 125 at baseline to 20 / 50 at the final visit. The area of CNV had changed into a fibrotic scar by the final visit, and fluorescein angiography and indocyanine green angiography revealed no evidence of leakage. Optical coherence tomography showed that central macular thickness decreased from 311 µm at baseline to 203 µm with complete resolution of subretinal and intraretinal fluid at the final visit. Intravitreal bevacizumab for CNV associated with angioid streaks prevented the progression of disease and resulted in the improvement of visual acuity after one year of follow-up in our patient

    Halogen ligth thermogravimetric technique for determining the retained water in fine aggregates used for concrete mixing design

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    [EN] Measuring the rate of water retention of the aggregates used in mortars and concrete is required to achieve a good mix design. The water retention, specifically absorption, is used to keep constant the water/cement ratio. This paper focuses on the study of a new technique for measuring retained water in fine aggregates. In order to obtain results, the procedure described in the existing standards takes more than 24 h. Additionally, it involves high consumption of heat energy due to the use of drying ovens. Furthermore, the results obtained remain highly variable and therefore discussed by the scientific community.In this research, a novel technique based on a halogen moisture analyzer was implemented. The technique was assessed using an experiment design with a surface response model. The most important factors and levels were identified together with the interactions between them. Finally, the model was validated and the results obtained with this technique were compared with those obtained by conventional techniques in order to verify that they were equivalent.Arias Jaramillo, Y.; Paya Bernabeu, JJ.; Ochoa Botero, JC. (2015). Halogen ligth thermogravimetric technique for determining the retained water in fine aggregates used for concrete mixing design. Journal of Thermal Analysis and Calorimetry: an international forum for thermal studies. 123:127-134. doi:10.1007/s10973-015-4902-8S127134123Djerbi Tegguer A. Determining the water absorption of recycled aggregates utilizing hydrostatic weighing approach. Constr Build Mater. 2012;27:112–6.Kasemchaisiri R, Tangtermsirikul S. A method to determine water retainability of porous fine aggregate for design and quality control of fresh concrete. Constr Build Mater. 2007;21:1322–34.Gonilho Pereira C, Castro-Gomes J, Pereira de Oliveira L. Influence of natural coarse aggregate size, mineralogy and water content on the permeability of structural concrete. Constr Build Mater. 2009;23:602–8.Cortas R, Roiziére E, Staquet S, Hamami A, Delplancke-Ogletree M. Effect of the water saturation of aggregates on the shrinkage induced cracking risk of concrete at early age. Cem Concr Compos. 2014;50:1–9.Black R. The determination of specific gravity using Siphon-Can method. Cem Concr Aggreg. 1986;8:46–50.Saxer E. A direct method of determining absorption and specific gravity of aggregates. 1956;2.Hughes B, Famili H., Part 1—Absorption of concrete aggregates, Part 2—saturated air techniques for determining the absorption of aggregates. In: Absorptions of concrete aggregates. Birmingham University; 1971.Tam VWY, Gao XF, Tam CM, Chan CH. New approach in measuring water absorption of recycled aggregates. Constr Build Mater. 2008;22:364–9.Balcedowiak W. Phase analysis of high-calcium line by TG. J Therm Anal Calorim. 2000;60:70–7.Mendoza O, Tobón JI. An alternative thermal method for identification of pozzolanic activity in Ca(OH)2/pozzolan pastes. J Therm Anal Calorim. 2013;114:589–96.Kosmatka SH, Kerkhoff B, Panarese W, MacLeod NF, McGrath RJ, Design and control of concrete mixtures. 7rd ed. Cement association of Canada. 2002. pp. 88.Cárdenas JI, Restrepo C. Patrimonio geológico y patrimonio minero de la cuenca carbonífera del suroeste antioqueño, Colombia. Boletín de ciencias de la tierra. 2006;18:91–102 ISSN 0120-3630 .Klein NS, Aguado A, Tollares-Carbonari BM, Real LV. Prediction of the water absorption by aggregates over time: modelling through the use of value function and experimental validation. Constr Build Mater. 2014;69:213–20

    Influence of a Uniform Current on Collective Magnetization Dynamics in a Ferromagnetic Metal

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    We discuss the influence of a uniform current, j\vec{j} , on the magnetization dynamics of a ferromagnetic metal. We find that the magnon energy ϵ(q)\epsilon(\vec{q}) has a current-induced contribution proportional to qJ\vec{q}\cdot \vec{\cal J}, where J\vec{\cal J} is the spin-current, and predict that collective dynamics will be more strongly damped at finite j{\vec j}. We obtain similar results for models with and without local moment participation in the magnetic order. For transition metal ferromagnets, we estimate that the uniform magnetic state will be destabilized for j109Acm2j \gtrsim 10^{9} {\rm A} {\rm cm}^{-2}. We discuss the relationship of this effect to the spin-torque effects that alter magnetization dynamics in inhomogeneous magnetic systems.Comment: 12 pages, 2 figure

    Deletion Mutants of VPg Reveal New Cytopathology Determinants in a Picornavirus

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    BACKGROUND: Success of a viral infection requires that each infected cell delivers a sufficient number of infectious particles to allow new rounds of infection. In picornaviruses, viral replication is initiated by the viral polymerase and a viral-coded protein, termed VPg, that primes RNA synthesis. Foot-and-mouth disease virus (FMDV) is exceptional among picornaviruses in that its genome encodes 3 copies of VPg. Why FMDV encodes three VPgs is unknown. METHODOLOGY AND PRINCIPAL FINDINGS: we have constructed four mutant FMDVS that encode only one VPG: either VPg(1), VPg(3), or two chimeric versions containing part of VPg(1) and VPg(3). All mutants, except that encoding only VPg(1), were replication-competent. Unexpectedly, despite being replication-competent, the mutants did not form plaques on BHK-21 cell monolayers. The one-VPg mutant FMDVs released lower amounts of encapsidated viral RNA to the extracellular environment than wild type FMDV, suggesting that deficient plaque formation was associated with insufficient release of infectious progeny. Mutant FMDVs subjected to serial passages in BHK-21 cells regained plaque-forming capacity without modification of the number of copies of VPg. Substitutions in non-structural proteins 2C, 3A and VPg were associated with restoration of plaque formation. Specifically, replacement R55W in 2C was repeatedly found in several mutant viruses that had regained competence in plaque development. The effect of R55W in 2C was to mediate an increase in the extracellular viral RNA release without a detectable increase of total viral RNA that correlated with an enhanced capacity to alter and detach BHK-21 cells from the monolayer, the first stage of cell killing. CONCLUSIONS: The results link the VPg copies in the FMDV genome with the cytopathology capacity of the virus, and have unveiled yet another function of 2C: modulation of picornavirus cell-to-cell transmission. Implications for picornaviruses pathogenesis are discussed
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