Search results for "plata"
showing 10 items of 104 documents
Naciones Unidas / 3. Refundar la ONU
2005
La Edad de Plata dedicada: mapas del paratexto y de las redes culturales en la obra poética de las escritoras españolas (1901–1936)
2019
La presente Tesis doctoral se propone analizar las redes de colaboración, apoyo y afecto que llevaron a cabo las poetas españolas de la Edad de Plata (1901-1936) que publicaron sus libros durante este periodo en lengua castellana, para el impulso de su personalidad autoral y la profesionalización de su escritura. Asimismo, pretendemos recuperar la memoria de estas autoras a través de la búsqueda de material histórico inédito y de sus archivos personales, en el caso de que se encuentren preservados. Para reconstruir estas relaciones entre poetas, así como con otros agentes culturales, partiremos de los elementos paratextuales que rodean al texto literario: prólogos, epílogos, dedicatorias o …
Caracterización electroquímica de metales nobles en objetos arqueológicos y en obras de arte
2019
La presente Tesis Doctoral se dirige a la caracterización de materiales, técnicas de fabricación, tipos de alteración de metales nobles (principalmente de oro y plata) en objetos artísticos y arqueológicos mediante técnicas electroquímicas, incorporando además estrategias quimiométricas para el desarrollo de métodos de autentificación y datación. Para ello se parte de la aplicación de las herramientas electroquímicas (principalmente voltamperometrías de barrido lineal, de onda cuadrada etc.). La información obtenida se va complementando con otras técnicas como la microscopia electrónica (FIB-FESEM) o la microscopía de fuerza atómica (AFM). También se hace hincapié en la necesidad de utiliza…
El trono de plata de la imagen original de la Virgen de los Desamparados (1738-1742)
2013
Fe3O4@Au@mSiO2 as an enhancing nanoplatform for Rose Bengal photodynamic activity
2017
A novel nanoplatform composed of three types of materials with different functionalities, specifically core-shell Fe3O4@Au nanoparticles encapsulated near the outer surface of mesoporous silica (mSiO2) nanoparticles, has been successfully synthesised and used to enhance the efficiency of a photosensitiser, namely Rose Bengal, in singlet oxygen generation. Fe3O4 is responsible for the unusual location of the Fe3O4@Au nanoparticle, while the plasmonic shell acts as an optical antenna. In addition, the mesoporous silica matrix firmly encapsulates Rose Bengal by chemical bonding inside the pores, thus guaranteeing its photostability, and in turn making the nanosystem biocompatible. Moreover, th…
The Effect of Simulated Leg-Length Discrepancy on the Dynamic Parameters of the Feet during Gait—Cross-Sectional Research
2021
Background: The effect of Leg-Length Discrepancy (LLD) on dynamic gait parameters has been extensively discussed. Podobarography is the study of foot-to-ground pressure distribution. It has been used to test plantar footprint deviations that could reveal pathology. Purpose: The aim of this study is to determine the effects of simulated LLD on dynamic gait parameters measured with a pressure platform in healthy subjects. Methods: Thirty-seven healthy subjects participated in observational cross-sectional research. A procedure was performed to capture the dynamic parameters of each participant under five different simulated LLD conditions. Support time, mean pressure, and peak pressure measur…
Oxycarenus lavaterae (FABRICIUS, 1787) (Hemiptera: Heteroptera: Oxycarenidae) – gatunek nowy dla fauny Polski
2016
Oxycarenus lavaterae (Hemiptera: Heteroptera: Oxycarenidae) has been collected from a Platanus acerifolia in Rzeszów-Słocina, Southeastern Poland. This is the first record of this species from Poland.
Performance increase of membrane distillation pilot scale modules operating in vacuum-enhanced air-gap configuration
2019
Abstract This paper presents the first experimental evaluation at pilot scale of the operation of vacuum-enhanced air-gap membrane distillation (V-AGMD) using two commercial spiral-wound modules at Plataforma Solar de Almeria's solar desalination test facilities. The main difference between the modules was the channel length (1.5 and 2.7 m) as a result of having different membrane surface area (7.2 m2 and 25.9 m2 respectively) and different number of envelopes. Suction of air from the gap improved the vapour transfer through the membrane pores and the performance of the modules was significantly increased in relation to common air-gap (AGMD) operational mode, especially in the treatment of …
Relation of lenacil metabolism with growth inhibition of acer pseudoplatanus cell suspension
1983
Abstract The action of lenacil, a herbicide which inhibits photosynthesis, was studied on Acer pseudoplatanus cell suspensions. The compound was quickly and thoroughly metabolized by cells into two major chloroform-extractable metabolites, but cell growth was temporarily inhibited while some cells were killed. As cell suspensions were non-photosynthetic, the data suggest that lenacil has site(s) of action other than that of photosynthesis. However, as the effects on photosynthesis occur at much lower concentrations (Hilton et al., Weeds, 12 (1964) 129), the effects on cell growth may be considered as secondary.