Search results for "Light"

Ideologie e culture della vendita: luci e spazi al supermercato

2022

This paper investigates the role of lighting in the quintessential commercial place: the supermarket. The aim of the article is to understand how lights contribute to construct the sense of a place and to define the supermarket as a text. Supermarket's system of illumination reveals the construcion of a framed text the connect fresh products with canned product. From a structuralistic pont of view, both industrial and organic supermarkets will be considered as the different treatment of lighting gives rise ti twi opposing ideologies of sale and consumption.

Photosensitive Alternative Splicing of the Circadian Clock Gene timeless Is Population Specific in a Cold-Adapted Fly, Drosophila montana

2018

Los Ethicorum Libri III del ilustrado valenciano Mariano Madramany y Calatayud: edición crítica, traducción y notas

2013

Esta tesis doctoral consiste en una edición crítica de los Ethicorum Libri III (Valencia, 1816) escritos por el erudito valenciano Mariano Madramany y Calatayud, acompañada de una traducción al español y de notas explicativas. En la introducción se da detallada cuenta de la biografía de Madramany a partir de la consulta de la documentación de archivos, y se repasa el conjunto de su producción escrita, prestando especial atención a los contenidos, las estructuras y las fuentes de los Ethicorum. El doctorando establece las principales fuentes de los Ethicorum Libri III, a saber, santo Tomás de Aquino, el Catecismo Romano y la Theologia Moralis de Alfonso de Ligorio. La Tesis pone de manifiest…

Changes in the flight paths of pigeons based on extended spatial landmarks: Poster

2021

The navigational behavior of birds is based on the spatial perception of the terrain over which they fly. Not only single reference points, but also continuous linear and areal objects can be visually perceived in flight and affect the flight path. In this work, we studied the features of the trajectories of pigeons during flights in order to identify the effect of discrete or continuous extended landmarks on spatial orientation. For this purpose we compared the GPS tracks of pigeons flying over weakly familiar terrain, and the visual features of this terrain, calculated on the basis of remote sensing data. Various cases of linear landmarks (alleys, rivers, roads) and boundaries between dif…

Changes in the flight paths of pigeons based on extended spatial landmarks: Oral presentation

2021

The effect of blue-light-blocking lenses on retinal straylight

2021

Sometimes yellow-tinted lenses are recommended to help improve visual quality. As yellow lenses filter blue light, it is believed that their use could decrease the intensity of scattered light in the eye (retinal straylight). However, the results of some studies have contradicted this assumption (Van Os et al. 2017). Currently various nontinted blue-light-blocking lenses are used to protect the eyes from short-wavelength light. The objective of this study was to determine whether blue-light-blocking lenses affect the levels of retinal straylight in the eye. A straylight meter (C-Quant, Oculus) was used for retinal straylight measurements. The measurements were performed under four different…

Octopus, a computational framework for exploring light-driven phenomena and quantum dynamics in extended and finite systems

2020

Over the last few years, extraordinary advances in experimental and theoretical tools have allowed us to monitor and control matter at short time and atomic scales with a high degree of precision. An appealing and challenging route toward engineering materials with tailored properties is to find ways to design or selectively manipulate materials, especially at the quantum level. To this end, having a state-of-the-art ab initio computer simulation tool that enables a reliable and accurate simulation of light-induced changes in the physical and chemical properties of complex systems is of utmost importance. The first principles real-space-based Octopus project was born with that idea in mind,…

Spectral properties of X-ray bright variable sources in the Taurus Molecular Cloud

2006

We analyze 19 bright variable X-ray sources detected in the XMM-Newton Extended Survey of the Taurus Molecular Cloud (XEST), in order to characterize the variations with time of their coronal properties and to derive informations on the X-ray emitting structures. We performed time-resolved spectroscopy of the EPIC PN and MOS spectra of the XEST sources, using a model with one or two thermal components, and we used the time evolution of the temperatures and emission measures during the decay phase of flares to derive the size of the flaring loops. The light curves of the selected sources show different types of variability: flares, long-lasting decay or rise through the whole observation, sl…

Stochastic gravito-inertial modes discovered by CoRoT in the hot Be star HD 51452

2012

International audience; Context. Be stars are rapidly rotating stars with a circumstellar decretion disk. They usually undergo pressure and/or gravity pulsation modes excited by the κ-mechanism, i.e. an effect of the opacity of iron-peak elements in the envelope of the star. In the Milky Way, p-modes are observed in stars that are hotter than or equal to the B3 spectral type, while g-modes are observed at the B2 spectral type and cooler. Aims. We observed a B0IVe star, HD 51452, with the high-precision, high-cadence photometric CoRoT satellite and high-resolution, ground-based HARPS and SOPHIE spectrographs to study its pulsations in great detail. We also used the lower resolution spectra a…

A photometric study of Be stars located in the seismology fields of COROT

2007

Context: In preparation for the COROT mission, an exhaustive photometric study of Be stars located in the seismology fields of the COROT mission has been performed. The very precise and long-time-spanned photometric observations gathered by the COROT satellite will give important clues of the origin of the Be phenomenon. Aims: The aim of this work is to find short-period variable Be stars located in the seismology fields of COROT and to study and characterise their pulsational properties. Methods: Light curves obtained at the Observatorio de Sierra Nevada together with data from Hipparcos and ASAS-3 of a total of 84 Be stars have been analysed in order to search for short-term variations. W…