Da Luz à Imagiologia Médica

Âmbito: Palestra a convite do Departamento de Física da Universidade de Trás-os-Montes e Alto Douro (ECT - UTAD) Contexto: VII Fórum Física e Sociedad

Growth of SiO2 Thin Films by Plasma-Assisted Reactive Magnetron Sputtering under the Impingement of Positive and Negative Ions

Presentación en la VII Reunión Bienal del Grupo Especializado de Física de Estado SólidoPeer reviewe

VII Jornadas de Campo de Geografía Física.

Sin resume

Host-guest molecular interactions in vanillin/Hylon VII inclusion complexes

The interaction of 4-hydroxy-3-methoxybenzaldehyde (vanillin) and Hylon VII due to the formation of an inclusion complex is studied using Fourier transform infrared spectroscopy (FT-IR), differential scanning calorimetry (DSC), and circular dichroism (CD). The results confirm the close interaction among the different functional groups of vanillin and its host. In addition, a second case study was carried out with an amylose 1 from a different source (100% amylose [APT III]). ). As a result, remarkable differences were found in the vanillin complexation capability of this amylose, which is only shown in solution by circular dichroism spectroscopy studies through a clear Cotton effect. This finding confirms the value of using CD studies, which allow finding that, depending of the amylose source, inclusion complexes can be found only in solution, or both in solution and the coexisting precipitates, when this is shown using other techniques, such as X-ray diffraction (XRD) or differential scanning calorimetry (DSC). Moreover, solubility assays and complexation of both starches with iodine and subsequent absorption spectroscopy studies gives more information regarding the possible source of the starch encapsula- tion capability. Thus, Hylon VII shows higher capacity as vanillin encapsulant than APT III, showing the formation of inclusion complexes both in solution and solid phase, whereas APT III complexes are only perceivable in solution.Fil: Rodríguez, Silvio David. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de Los Materiales, Medioambiente y Energía; Argentina. Universidad de Buenos Aires; ArgentinaFil: Bernik, Delia Leticia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de Los Materiales, Medioambiente y Energía; Argentina. Universidad de Buenos Aires; Argentin

ENSEÑANZA DE LA EPISTEMOLOGÍA DE LA EDUCACIÓN FÍSICA EN EL PROYECTO CURRICULAR LICENCIATURA EN EDUCACIÓN FÍSICA DE LA UNIVERSIDAD PEDAGÓGICA NACIONAL: UNA MIRADA DESDE LA HISTORIA. UNA EXPERIENCIA PARA COMPARTIR

Este artículo quiere compartir la experiencia de enseñanza de la epistemología de la educación física,en el Proyecto Curricular Licenciatura en Educación Física de la Universidad Pedagógica Nacional. Eltexto muestra la manera en que se organizó la propuesta metodológica de una tesis de trabajo, quesurge desde discusiones abordadas en el desarrollo de la investigación: Las competencias específicasde la Educación Física factor de calidad de la enseñanza. Dicha propuesta fue implementada en elespacio académico denominado Formación Teórica Disciplinar en los semestres V, VI y VII, entre 2007y 2008

Search for chargino-neutralino production with mass splittings near the electroweak scale in three-lepton final states in √s=13 TeV pp collisions with the ATLAS detector

A search for supersymmetry through the pair production of electroweakinos with mass splittings near the electroweak scale and decaying via on-shell W and Z bosons is presented for a three-lepton final state. The analyzed proton-proton collision data taken at a center-of-mass energy of √s=13  TeV were collected between 2015 and 2018 by the ATLAS experiment at the Large Hadron Collider, corresponding to an integrated luminosity of 139  fb−1. A search, emulating the recursive jigsaw reconstruction technique with easily reproducible laboratory-frame variables, is performed. The two excesses observed in the 2015–2016 data recursive jigsaw analysis in the low-mass three-lepton phase space are reproduced. Results with the full data set are in agreement with the Standard Model expectations. They are interpreted to set exclusion limits at the 95% confidence level on simplified models of chargino-neutralino pair production for masses up to 345 GeV

Gauged BPS baby Skyrmions with quantised magnetic flux

A new type of gauged BPS baby Skyrme model is presented, where the derivative term is just the Schroers current (i.e., gauge invariant and conserved version of the topological current) squared. This class of models has a topological bound saturated for solutions of the pertinent Bogomolnyi equations supplemented by a so-called superpotential equation. In contrast to the gauged BPS baby Skyrme models considered previously, the superpotential equation is linear and, hence, completely solvable. Furthermore, the magnetic flux is quantized in units of $2\pi$, which allows, in principle, to define this theory on a compact manifold without boundary, unlike all gauged baby Skyrme models considered so far.Comment: Latex, 17 page

Asociación Española para el Progreso de las Ciencias : Quinto Congreso : celebrado en Valladolid del 17 al 22 de octubre de 1915

T. VI: Madrid : Imprenta de Alrededor del Mundo, 1917. T. VII: Madrid : Imprenta de Fortanet, 1918Copia digital. Valladolid : Junta de Castilla y León. Consejería de Cultura y Turismo, 2009-2010Contiene: t. I. Discursos de apertura -- t. III. Sección 1ª: ciencias matemáticas -- t. IV. Sección 2ª: Astronomía y física del globo -- t. V. Ciencias físico-químicas -- t. VI. Sección IV : ciencias naturales -- t. VII. Sección 5ª : ciencias sociales -- t. IX. Sección 7ª : ciencias médicas -- t. X. Sección 8ª : ciencias de aplicació

Pere Vieta (1779–1856), promoter of free public teaching of physics in Catalonia

Free public teaching of physics in Catalonia started in the early 19th century, even if the interest in experimental physics goes back to the 18th century, where this discipline was discussed at various learned societies. The first chair of Physics in Barcelona was not a university chair but that of the Junta de Comerç de Barcelona (Trade Board of Barcelona), which had several scientific-technical Schools. In fact, at that time, Barcelona had no university, because it had been supressed by King Felipe V after the War of the Spanish Succession (ended in 1714). The promoter of free public teaching of experimental physics was Pere (Pedro) Vieta i Gibert (17791856), who was the first professor of that subject both at the School of the Trade Board and at the University of Barcelona, once it was restored in 1842. Vieta, who was a surgeon in the Army, combined his two professions and his interest in meteorology, he having recorded meteorological observations in Barcelona for many years. Many of his students were influential people in the scientific, intellectual, political and economic history of the 19th century in Catalonia and Spain. [Contrib Sci 11:237-247 (2015)]Postprint (published version