431 research outputs found
X-RAY: Averiguar espacios e inventar lugares
The places that have led me to understand the concept of architectural space, I have those
that show me the soul of space and the true luxury of architecture, are those that have not
been described in its exterior, which have required some exploration, which they remain
hidden and silent in the dark because the light reaches them timid, dense and filtered. X-rays
as a photographic technique, understood, on the one hand as beautiful tool of exploration
and analysis of the reality hidden behind the appearance of the visible world, and on the
other hand as a technique applied to architectural projects reveals a suggestive world
of possibilities for the creation of new spaces. If the section cuts, photography by X-ray
reveals. Section alters, modifies, fractures; X-rays reveal with no alteration internal parts of
a particular object. Today a new generation of architects is producing experimental works
under the influence of this unknown field of photography, an interaction that is allowing
to find spaces and invent new places. Our work implements the suggestive potential of this
tool, providing the sustained personal experience with Nick Veasey in Radar Studio (London).
For several weeks we had the opportunity to work in his bunker, in his darkroom, to explore
the architectural possibilities of the X-ray machine An unpublished documentation, which
reveals an exciting world with endless creative possibilities. A new veiled reality surprises us
with the discovery of new spaces for architecture.Los lugares que me han llevado a comprender el concepto de espacio arquitectónico, los
que mas me han mostrado el alma del espacio y el verdadero lujo de la arquitectura, son
aquellos que no se han descrito en su exterior, que han requerido de una cierta exploración,
que permanecen ocultos y en silencio, a oscuras porque la luz les llega tímida, densa y
filtrada. Los rayos X como técnica fotográfica, entendida, por un lado como hermosa
herramienta de exploración y análisis de la realidad que se oculta tras la apariencia del
mundo visible, y por otro lado como técnica que aplicada al proyecto arquitectónico
desvela un sugerente mundo de posibilidades para la creación de nuevos espacios. Si la
sección corta, la fotografía mediante rayos X desvela. La sección altera, modifica, fractura;
los rayos X revelan sin alteración alguna las partes internas de un determinado objeto. Hoy
en día una nueva generación de arquitectos está produciendo obras experimentales bajo la
influencia de este desconocido campo de la fotografía, una interacción que está permitiendo
averiguar espacios e inventar nuevos lugares. Nuestro trabajo pone en práctica el potencial
de esta sugerente herramienta, aportando la experiencia personal mantenida con Nick
Veasey en Radar Studio (Londres). Durante varias semanas tuvimos la oportunidad de
trabajar en su bunker, en su darkroom, de explorar las posibilidades arquitectónicas de su
máquina de rayos X. Una documentación inédita, que desvela un mundo apasionante, con
una posibilidades creativas infinitas. Una nueva realidad velada que nos sorprende con el
descubrimiento de nuevos espacios para la arquitectura
Welbeck estate. Desde las entrañas de la tierra John Cavendish-Scott-Bentinck, 5th Duque de Portland (1800-1879)
Esta es la historia de una ciudad transformada desde las entrañas de la tierra, un más allá donde las leyes de la razón quedan en suspenso. Una especie de “otra naturaleza”, entendida como un inmaterial desconocido con el que reflexionar sobre la hipótesis de que toda ciudad contiene en sus dobleces un mundo natural. Este ensayo es un posicionamiento, un dialogo en torno a esta singular relación entre ciudad y naturaleza; una reflexión sobre la forma en que las cosas ocurren en el espacio, y aquellas que suceden en el tiempo. Espacios y tiempos desdoblados y plegados sobre sí mismos, como inmateriales con los que el 5th duque construyó esta fascinante escenografía en la que representar su propia vida.The life of the 5th Duke of Portland is the story of the obsession with finding a spot of quiet, a zone free of worry, a place to feel safe. Perhaps he found there, in that natural and unfolded space of the visible world, the forces to overcome his difficulty, to understand the scale of space; that is, the way in which others establish relationships of similarity, distance or closeness with oneself. Following his appointment as heir to this immense state, almost immediately began a series of investments of an unprecedented scale, which have been considered, technically and conceptually, pioneers in the domestic and landscape transformations of the nineteenth century. Welbeck Estate is a double city, one visible and the other hidden, one in surface, constructed with physical materials; the other less obvious, submerged between shadows and natural substances, flows, energies, scales, processes and senses.This is the story of a city transformed from the bowels of the earth, beyond where the laws of reason are suspended. A kind of “other nature”, understood as an immaterial unknown with which to reflect on the way things happen in space, and those that happen in time. Spaces and times unfolded and folded over themselves, as materials with which the 5th Duke built this fascinating scenery in which to represent his own life
Gigantism: microsurgical treatment by transsphenoidal approach and prognostic factors
Purpose: We present the results of transsphenoidal microsurgical treatment in 14 patients with gigantism. The influence on the prognosis of factors such as the tumor size and preoperative levels of GH and IGF-1 is also quantified.
Materials and methods: The patients, operated between 1982 and 2004, were reviewed retrospectively in June 2022. All patients had complete endocrinological studies in the preoperative period and a postoperative control between 6 days and 3 weeks. Follow-up has been supported with annual check-ups between 3 and 31 years. We have compared the preoperative levels of GH and IGF-1 of these patients with the levels of a series of acromegalic patients operated on in the same Center.
Results: In this series there were 4 women and 10 men. The age ranged between 14 and 21 years. In 6 patients, postoperative hormone levels achieved the disease control criteria (42.8%). The CT/MRI studies revealed the existence of invasive tumors in 10 of the patients (71.4%). Postoperative CT/MRI showed no tumor tissue in 3 patients but in 7 patients there were tumor remains. The remaining 4 patients had abnormal images although not considered as tumor. A statistical comparison of preoperative serum GH and IGF-1 levels in patients with gigantism and patients with acromegaly showed a significant elevation in the former.
Conclusion: Pituitary adenomas that cause gigantism are generally large and invasive, which makes them difficult to cure. High preoperative levels of GH and IGF-1 are also factors that decrease remission
The discrimination capabilities of Micromegas detectors at low energy
The latest generation of Micromegas detectors show a good energy resolution,
spatial resolution and low threshold, which make them idoneous in low energy
applications. Two micromegas detectors have been built for dark matter
experiments: CAST, which uses a dipole magnet to convert axion into detectable
x-ray photons, and MIMAC, which aims to reconstruct the tracks of low energy
nuclear recoils in a mixture of CF4 and CHF3. These readouts have been
respectively built with the microbulk and bulk techniques, which show different
gain, electron transmission and energy resolutions. The detectors and the
operation conditions will be described in detail as well as their
discrimination capabilities for low energy photons will be discussed.Comment: To be published in the proceedings of the TIPP2011 conference
(Physics Procedia
CAST microbulk micromegas in the Canfranc Underground Laboratory
During the last taking data campaigns of the CAST experiment, the micromegas
detectors have achieved background levels of keVcms between 2 and 9 keV. This performance has
been possible thanks to the introduction of the microbulk technology, the
implementation of a shielding and the development of discrimination algorithms.
It has motivated new studies towards a deeper understanding of CAST detectors
background. One of the working lines includes the construction of a replica of
the set-up used in CAST by micromegas detectors and its installation in the
Canfranc Underground Laboratory. Thanks to the comparison between the
performance of the detectors underground and at surface, shielding upgrades,
etc, different contributions to the detectors background have been evaluated.
In particular, an upper limit keVcms
for the intrinsic background of the detector has been obtained. This work means
a first evaluation of the potential of the newest micromegas technology in an
underground laboratory, the most suitable environment for Rare Event Searches.Comment: 6 pages, 8 figures. To appear in the proceedings of the 2nd
International Conference on Technology and Instrumentation for Particle
Physics (TIPP 2011
Lessons from the operation of the "Penning-Fluorescent" TPC and prospects
We have recently reported the development of a new type of high-pressure
Xenon time projection chamber operated with an ultra-low diffusion mixture and
that simultaneously displays Penning effect and fluorescence in the
near-visible region (300 nm). The concept, dubbed `Penning-Fluorescent' TPC,
allows the simultaneous reconstruction of primary charge and scintillation with
high topological and calorimetric fidelity
Low Background Micromegas in CAST
Solar axions could be converted into x-rays inside the strong magnetic field
of an axion helioscope, triggering the detection of this elusive particle. Low
background x-ray detectors are an essential component for the sensitivity of
these searches. We report on the latest developments of the Micromegas
detectors for the CERN Axion Solar Telescope (CAST), including technological
pathfinder activities for the future International Axion Observatory (IAXO).
The use of low background techniques and the application of discrimination
algorithms based on the high granularity of the readout have led to background
levels below 10 counts/keV/cm/s, more than a factor 100 lower than
the first generation of Micromegas detectors. The best levels achieved at the
Canfranc Underground Laboratory (LSC) are as low as 10
counts/keV/cm/s, showing good prospects for the application of this
technology in IAXO. The current background model, based on underground and
surface measurements, is presented, as well as the strategies to further reduce
the background level. Finally, we will describe the R&D paths to achieve
sub-keV energy thresholds, which could broaden the physics case of axion
helioscopes.Comment: 6 pages, 3 figures, Large TPC Conference 2014, Pari
Perceived emotional intelligence and its relation to tobacco and cannabis use among university students
The aim of this work has been to analyse the role of Perceived Emotional Intelligence (PEI) in the use of tobacco and cannabis in 133 psychology undergraduates (114 women and 19 men), all aged between 18 and 27, with a mean age of 21.52 yr. (SD= 5.42). PEI was assessed using an abbreviated version of the Trait Meta-Mood Scale (TMMS), developed by Salovey, Mayer, Goldman, Turvey and Palfai (1995) and adapted into Spanish by Fernández-Berrocal, Extremera, and Ramos (2004). The TMMS assesses an individual's ability to perceive, understand and manage emotion. The principal results obtained point to the fact that the students who consume tobacco or cannabis present lower levels of the Repair component of the TMMS and are those who started consuming tobacco or cannabis at an earlier age. On the other hand, Emotional Clarity appears to be related to the occasional consumption of cannabis, in that the students attaining high scores were those who consumed less. The Emotional Attention component of the TMMS is not involved in the consumption of these substances. These preliminary findings indicate the existing relationship between some components of the TMMS and the consumption of tobacco or cannabis. Nevertheless, we need to further investigate the differing implications of each one of the PEI components in the use of these substancesEl objetivo de este trabajo ha sido analizar el papel de la Inteligencia Emocional Percibida (IEP) en el consumo de tabaco y cannabis en 133 estudiantes de psicología (114 mujeres y 19 hombres) con una edad comprendida entre 18 y 27 años, y una media de edad 21.52 años (DS= 5.42). La PEI fue medida mediante la versión abreviada del Trait Meta-Mood Scale (TMMS) desarrollado por Salovey, Mayer, Goldman, Turvey y Palfai (1995) y adaptado al castellano por Fernández-Berrocal, Extremera y Ramos (2004). El TMMS es una medida que evalúa la habilidad del individuo para percibir, comprender y manejar las emociones. Los principales resultados obtenidos apuntan al hecho de que los estudiantes que consumen tabaco o cannabis presentan niveles bajos en el componente de Reparación del TMMS y son los que comenzaron a consumir tabaco o cannabis a una edad más temprana. Por otro lado, la Claridad Emocional parece estar relacionada con el consumo ocasional de cannabis, de modo que los estudiantes con alta puntuación en este factor consumieron menos. El componente de Atención Emocional del TMMS no está implicado en el consumo de estas sustancias. Estos resultados preliminares indican la relación existente entre algunos componentes del TMMS y el consumo de tabaco o cannabis. No obstante, es necesario investigar más en las diferentes implicaciones de cada uno de los componentes de la IEP en el consumo de estas sustancia
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