1,036 research outputs found
Maria Cristina Arellana, Georgina Estevez, and Laura Tobie
No full textThis 1965 photograph shows Maria Cristina Arellana of Havana, Cuba, Georgina Estevez and Laura Tobie, both of Caracas, Venezuela in Hubert Hayes Memorial Log Cabin. Founder and director of the Mountain Youth Jamboree, Hubert H. Hayes (1901-1964) auditioned and directed youth to perform in folk dance, music, and folk and ballad singing. The jamboree was held in the Asheville City Auditorium (now known as Thomas Wolfe Auditorium) from 1948 to 1973, and Hayes’ wife, Leona Trantham Hayes (1913-1989) continued to direct the program after his death in 1964. Hubert Hayes was an author, playwright, and alumni of Duke University
Las Tres Habanas de Abilio Estévez: La Representación del Espacio Urbano en su Literatura
No full textThe Cuban novelist, poet and dramatist Abilio Estevez considers La Havana as a synecdoque of Cuba. In its personal representation of the city where he spent his university and maturity years, we may differentiate three Havanas: The first one is The Havana of the future, an apocalyptical city with 1984's Orwell reminiscences. Estevez's future Havana never survives its fatal fate: it will be consistently destroyed by floods or fires. Even in Tuyo es el reino ( Thine is the Kingdom) will the second Havana, the Havana of the past, of his childhood and memory, in the Baptista's Cuba, a sweetened reality, end in flames. Nevertheless, this second Havana manages to survive. Estevez associates the memories of his childhood with happiness. Consequently, this second Havana usually survives its particular fatum. The Havana of the past will be saved by the word, by the written or the spoken word, by memory or literature. These will be the tools used by the author for the reconstruction of his city. The third Havana, the Havana of the present is closer to the apocalyptic Havana than to the almost perfect Havana of the past. Estevez describes Fidel Castro's Cuba and La Havana as a ruined reality, where only few places provide the feeling of safeness: theatres, cemeteries, parks or flat roofs, spaces that are part of the city, but at the same time distant (aside of above the city), places full of memories and past.World Languages and Literature
A condition-based maintenance methodology for rails in regional railway networks using evolutionary multiobjective optimization: Case study line Braşov to Zărneşti in Romania
No full textIn this paper, we propose a methodology based on signal processing and evolutionary multiobjective optimization to facilitate the maintenance decision making of infra-managers in regional railways. Using a train in operation (with passengers onboard), we capture the condition of the rails using Axle Box Acceleration measurements. Then, using Hilbert-Huang Transform, the locations where the major risks are detected and ssessed with a degradation model. Finally,evolutionary multiobjective optimization is employed to solve the maintenance decision problem, and to facilitate the visualization of the trade-offs between number of interventions and performance. Real-life measurements from the track from Braşov to Zărneşti in Romania are included to show the methodology.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Railway Engineerin
Jusepe de Ribera's artistic identity and self-fashioning in early modern Italy and Spain
No full textThis dissertation considers the ways in which Jusepe de Ribera (1591-1652) fashioned his artistic identity and sought to elevate his social status in Spanish Naples. My dissertation studies alternative ways of understanding the social status of Spanish painters. Organized in five chapters, my dissertation examines the methods Ribera used to shape his artistic identity as a Spanish painter working in viceregal Naples. In chapter one, I consider the outward markers of Ribera’s success: the practical strategies he took to ensure his economic success and to elevate his social position. The second chapter deals with Ribera’s intellectual self-fashioning and the cultivation of his “learned naturalism.” A systematic study of the artist’s signatures in his paintings, drawings, and prints forms the core of the third chapter of this dissertation. In this same chapter, I analyze extant early modern portraits of the artist, both accurate and fanciful, in assessing an approximate likeness of the painter. I analyze Ribera’s critical fortunes and biographies in the fourth chapter to see how early modern art biographers virtually “painted” varying literary portraits of Ribera as portrayed in early modern Italian and Spanish art treatises and biographies. Chapter five focuses on how Ribera’s image was further cultivated by early modern Spanish and Neapolitan Baroque poets and playwrights.Ph. D.Includes bibliographical referencesIncludes vitaby Lisandra Esteve
Reseña de Francisco Estévez e Isabel Román Gutiérrez (eds.). El mar de la palabra. Poesía de Jorge Urrutia. Madrid: Biblioteca Nueva, 2011, 286 págs.
No full textFotografía: "The words the wind removes them", Helle DagdrømmerReseña bibliográfica
Medición de retención de polímero de alto peso molecular en muestras de areniscas: berea, sandpack, usando trazadores químicos: Tritio, 2- FBOH y Variación de salinidad; con salmuera de 20 g/l
No full textEste trabajo se realizó con el objetivo de cuantificar la retención de polímero de alto
peso molecular en medios porosos (MP), específicamente en muestras de Berea y
Sandpack. Además, se buscó caracterizar la aplicación de trazadores químicos
alternativos al Tritio (HTO) comúnmente utilizado en ensayos de laboratorio.
La retención de polímeros en el MP puede causar problemas técnicos y económicos,
ya que parte del polímero inyectado no alcanza su destino debido al entrampamiento
en los canales del MP y la adsorción en el mismo. Para abordar esta cuestión, se
utilizó el polímero lineal FLOPAAM FP3630s, con un peso molecular de 18 MMDalton,
y se evaluó el uso de un trazador salino y del trazador particionable 2-FBOH, en
comparación con el trazador Tritio (HTO). Las muestras ensayadas incluyeron Berea
y Sandpack, con permeabilidades del orden de 100 mD y 40 Darcy, respectivamente.
Las muestras fueron saturadas con salmuera de salinidad 18 g/l.
Se realizaron experimentos en el laboratorio de petrofísica de la Facultad de
Ingeniería, Universidad Nacional del Comahue, La metodología incluyó la inyección
de salmuera de salinidad 20 g/l, tritiada y aditivada con 2-FBOH, seguida de la
inyección de una salmuera de salinidad de 18 g/l, para obtener curvas de variación de
concentración de los trazadores. Se midió la salinidad con un equipo conductímetro,
la concentración de tritio con un equipo de centelleo y la concentración de 2-FBOH
con un espectrofotómetro UV-Vis.
El análisis de los resultados permitió determinar el volumen poral de las muestras y
calcular la cantidad de polímero retenido. Este estudio busca, además, optimizar
futuros ensayos de laboratorio y proporcionar una alternativa viable al uso de
trazadores radiactivos en la caracterización de medios porosos.This study was conducted with the objective of quantifying the retention of high
molecular weight polymer in porous media (PM), specifically in sandstone samples
such as Berea and Sandpack. Additionally, it aimed to characterize the application of
alternative chemical tracers to Tritium (HTO), which is commonly used in laboratory
tests.
Polymer retention in PM can cause technical and economic issues, as a portion of the
injected polymer fails to reach its destination due to entrapment in the channels of the
PM and adsorption within the porous medium. To address this issue, the linear polymer
FLOPAAM FP3630s, with a molecular weight of 18 MMDalton, was used. The study
evaluated the use of a saline tracer and the partitionable tracer 2-FBOH, in comparison
to the Tritium (HTO) tracer. The tested samples included Berea and Sandpack
sandstones, with permeabilities of approximately 100 mD and 40 Darcy, respectively.
The samples were saturated with brine at a salinity of 18 g/L.
Experiments were carried out in the petrophysics laboratory of the Faculty of
Engineering at the National University of Comahue. The methodology included the
injection of brine with a salinity of 20 g/L, enriched with tritium and 2-FBOH, followed
by the injection of brine with a salinity of 18 g/L, to obtain concentration variation curves
for the tracers. Salinity was measured using a conductivity meter, tritium concentration
with a scintillation counter, and 2-FBOH concentration with a UV-Vis
spectrophotometer.
The analysis of the results allowed for the determination of the pore volume of the
samples and the calculation of the amount of retained polymer. This study also seeks
to optimize future laboratory tests and provide a viable alternative to the use of
radioactive tracers in the characterization of porous media.Fil: Jara, Leandro Agustín. Universidad Nacional del Comahue. Facultad de Ingeniería. Departamento de Geología y Petróleo; Argentina.Fil: Malisani, Nicolás Agustín. Universidad Nacional del Comahue. Facultad de Ingeniería. Departamento de Geología y Petróleo; Argentina
- …
