Search results for "EPO"
showing 10 items of 6062 documents
Crystalline subtype of pre-descemetic corneal dystrophy.
2014
Purpose: To report corneal findings in a familial case of the crystalline subtype of pre- Descemetic corneal dystrophy. Case Report: A 19-year-old girl and her 44-year-old mother were found to have asymptomatic, bilateral, punctiform and multi-colored crystalline opacities across the whole posterior layer of the corneas. Endothelial specular microscopy revealed the presence of white round flecks located at different levels anterior to the endothelium. No systemic abnormalities or medications could be related to account for these findings. Conclusion: To the best of our knowledge, this is the third familial report of this rare corneal disorder. Differential diagnosis may include Schnyder cor…
Study of the MOCVD growth of ZnO on GaAs substrates: Influence of the molar ratio of the precursors on structural and morphological properties
2007
Abstract ZnO thin films were grown by metal-organic chemical vapour deposition (MOCVD) on GaAs(100) and GaAs(111)A substrates. The growth experiments were performed at temperatures ranging from 290 to 500 ∘C and atmospheric pressure. Diethylzinc (DEZn) and tertiary butanol (tBuOH) were used as Zn and O precursors, respectively. The crystallinity of the grown films was studied by X-Ray Diffraction (XRD) and the thickness and morphology were investigated by Scanning Electron Microscopy (SEM). The influence of substrate orientation and molar ratio of the precursors on the crystalline orientation and morphology of the ZnO grown films was analysed.
Structure and Microscopic Magnetism of Epitaxial Ni-Mn-Ga Films
2012
We report on the structural and magnetic properties of epitaxial thin films of the ferromagnetic shape memory material Ni–Mn–Ga prepared by DC magnetron sputter deposition. Different substrate materials, i.e., MgO(100) and Al2O3(11−20) allow for a tailored epitaxial growth. Using a sacrificial chromium buffer layer freestanding epitaxial films are obtained. In combination with photolithography partially freestanding structures such as microbridges are fabricated. The complex martensite crystal structure in substrate-constrained and freestanding films is studied by means of X-ray diffraction. The identified asymmetric twin variant configuration is associated with a macroscopic surface patter…
Deposition of Cu Nanoparticles on the Surface of Metallic Aluminum
2012
Deposition of Cu particles by electrolysis at constant electrode potential and by internal electrolysis methods was investigated. The composition of deposited material was confirmed by optical and scanning electron microscope methods. Combination of electrolysis at constant electrode potential with internal electrolysis method was found most effective for fabrication of nanoparticle arrays. Single crystalline Cu particles are fabricated by internal electrolysis, while polycrystalline ones obtained by combined chronopotentiometric and internal electrolysis methods. The formation mechanism of Cu nanoparticles is described.
CIGS THIN FILM BY ONE-STEP ELECTRODEPOSITION FOR SOLAR CELLS
2013
In this work, we present a cost-effective technique to produce CIGS thin films for solar cells by means of a single-step electrodeposition. In fact, electrodeposition is known as an easy technique for building low cost materials for photovoltaic device processing. Morphological, structural and optical characterization of these films has been performed.
Electrochemical and chemical synthesis of CIS/Zn(S,O,OH) for thin film solar cells
2014
In this work, we are reporting results on the electrodeposition of the CuInSe2 thin films on molybdenum thin foil substrates. We have used an aqueous non-buffered electrolyte and a careful choice of deposition parameters to ensure a good quality and composition of the deposited films. In addition, CdS was replaced in the buffer layer with a wider bandgap Zn(S,O,OH) film obtained by chemical bath deposition. The deposited films were annealed in inert atmosphere at different temperatures. The influence of annealing temperature on the properties of the films is briefly discussed. Films were also characterized by photoelectrochemical and I-V measurements. Structural characterization was carried…
Block 21 and the Pensabilità of the Representation of Auschwitz
2012
Abstract Building on the assumption that the Memorial in Honor of Italians Fallen in Nazi Extermination Camps (situated in Auschwitz I, Block 21) expresses the meta-reflexive inclination that strengthened the twentieth century (the capacity of that century to think of itself as a subject), this article aims to highlight and illustrate the dual philosophical significance of the Memorial. From the perspective of the philosophy of history, this philosophical significance, which has a symbolic value, leads us to investigate an organic and historically embodied conception of deportation. From the perspective of the aesthetics of memory, this philosophical meaning offers a new framework for the …
La locura, ¿una respuesta literaria a la violencia en Colombia? En torno a 'Delirio' de Laura Restrepo
2014
Resumen : Delirio , la novela mas internacional de la colombiana Laura Restrepo, nos acerca, desde un angulo particular, a la realidad vivida en el pais durante la decada de los noventa. En ella somos testigos de como la violencia moldea a su antojo las vivencias de tres generaciones de personajes cuyo entramado de voces nos llegan bien en forma de susurros, bien vociferando sus consecuencias delirantes. Es por ello que nos disponemos a examinar en este trabajo, en que medida aparece la locura como respuesta a los males de la nacion, atendiendo especialmente al modo en que esto contribuye a la construccion de la memoria del yo. Abstract: Delirio, the most international novel of Colombian wr…
La heterodoxia en la poesía visual española del siglo XXI
2014
Resumen: Toda vanguardia esconde un malestar y una rebeldia contra la realidad que aflige al individuo y que se vuelve objeto de critica en las obras. En este sentido, tras aclarar a que nos referimos cuando hablamos de poesia visual, analizaremos algunas obras que han aparecido por primera vez en 2014, interpretandolas como reaccion contra la perdida de valores de la sociedad postmoderna. La finalidad sera demostrar que la poesia visual espanola del siglo XXI no ha renunciado a su heterodoxia, puesto que elige justamente este universo donde todo es rapido, fluido, superficial, complejo e inasible para seguir denunciando desde su interior la incomunicacion y la alienacion a la que nos han l…
Pursuing decentralisation : regional cultural policies in Finland and Sweden
2021
In both Finland and Sweden, decentralisation has traditionally been an essential cultural policy aim. This article explores how, by pursuing decentralisation, the regional jurisdictions have been presented with more possibilities to fulfil their purposes and in this way, gain legitimacy in cultural policy. Based on the analysis of political, legal, and administrative documents, three main periods of regional decentralisation in cultural policies are identified: regions as vehicles of welfare policy, regionalisation, and competitive regions. In both countries, national governments have promoted the regional level’s agency, and in doing so, potential institutional change in cultural policy. H…