Magnetic anisotropies of late transition metal atomic clusters

We analyze the impact of the magnetic anisotropy on the geometric structure and magnetic ordering of small atomic clusters of palladium, iridium, platinum and gold, using Density Functional Theory. Our results highlight the absolute need to include self-consistently the spin orbit interaction in any simulation of the magnetic properties of small atomic clusters, and a complete lack of universality in the magnetic anisotropy of small-sized atomic clusters.Comment: 4 pages, 5 figures, 1 EPAPS fil

Evaluation of the mechanical properties of self compacting concrete using current estimating models. Estimating the modulus of elasticity, tensile strength, and modulus of rupture of self compacting concrete

This study includes an analysis of the applicability of current models used for estimating the mechanical properties of conventional concrete to self-compacting concrete. The mechanical properties evaluated are: modulus of elasticity, tensile strength, and modulus of rupture. An extensive database which included the dosifications and the mechanical properties of 627 mixtures from 138 different references, was used. The models considered are: ACI, EC-2, NZS 3101:2006 (New Zealand code) and the CSA A23.3-04 (Canadian code). The precision in estimating the modulus of elasticity and tensile strength is acceptable for all models; however, all models are less precise in estimating the modulus of rupture

Don Quijote por dentro: el madrigal (DQ II, 68)

El madrigalete que don Quijote canta en la noche, y el contexto en el que aparece (DQ II, 68), proporcionan una clave fundamental (“temor” y “esperanza” para apreciar la evolución tan humana y verdadera del caballero en esta narración de sus aventuras, que constituye una bella metáfora de la vida humana. The “madrigalete” that don Quixote sings in the night and the context in which it appears (DQ II, 68), provides a fundamental clue (“fear” and “hope”) to understand the human evolution of the knight, a beautiful metaphor of human life

El Seminario sobre Historia del Monacato (Aguilar de Campo): una revisión historiográfica

El interés por el monacato ha ido evolucionado a lo largo de los años, tanto en temas seleccionados como en la forma de estudiar esos temas y en quiénes se han encargado de hacerlo. Si en los primeros seminarios se presta gran atención al eremitismo, la Historia Antigua y la Tardoantigüedad, en los más recientes tenemos el románico y las órdenes monásticas como centro. Lo que al inicio eran presentaciones generales (como las órdenes religiosas), ahora se analizan más profundamente, hasta el punto de dedicarles seminarios completos. Se ha diversificado la procedencia de los autores tanto geográfica como en lo referente a su campo de trabajo.The interest in monasticism has been evolving over the years in selected topics, in the way of studying them and in who have been in charge of doing it. If in the early seminaries eremitism, Ancient History and Late Antiguity are given much attention, in the most recent seminaries the centre has been the Romanesque and the monastic orders. What in the beginning were general presentations (like the religious orders), are now analyzed in greater depth, even to the point of devoting them complete seminaries. The origin of the authors has been diversified both regarding their work area and geographically.Departamento de Historia Antigua y MedievalGrado en Histori

Gold(I)-catalyzed enantioselective addition and cycloaddition reactions

This Doctoral Thesis has been focused on the development of new gold(I)-catalyzed enantioselective addition and cycloaddition reactions. In particular, in the first chapter, dedicated to the development of enantioselective addition reactions, we describe the discovery of the first intermolecular reaction involving the synergistic combination of an enamine-mediated organocatalysis and a gold (I) catalyst, providing the products with moderate to good levels of enantioselectivity. In the second chapter, we describe the successful development of an enantioselective gold(I)-catalyzed (2+2+2) cascade cycloaddition between N-allenamides and alkenyl-oximes, constituting one of the very few catalytic and enantioselective methods that allowed to build aza-bridged bicyclic systems from readily available acyclic starting materials

Welfare Policies and Solidarity Toward the Elderly

In this paper we analyze the effect of welfare policies oriented toward the elderly on solidarity toward the elderly in a sample of European countries. The research question is whether more generous welfare policies crowd out solidarity. For this purpose, we analyze four waves of the SHARE database. We use multilevel analysis to estimate the effect of national variables on transfers toward the elderly, controlling for individual level variables. At the national level we focus on the effect of public spending on policies oriented toward the elderly after controlling for some other relevant variables, such as the proportion of elderly people, female labor force participation and unemployment. Our results indicate that expenditure in social protection toward the elderly has a positive and significant (albeit moderate) effect on the economic support received by the elderly (which is in line with the Crowding-in hypothesis). However, in the case of time transfers, we find that expenditure in social protection toward the elderly has a negative and significant impact on the time transfers received by the elderly (which is consistent with the Crowding-out hypothesis).Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

First order transitions by conduction calorimetry: Application to deuterated potassium dihydrogen phosphate ferroelastic crystal under uniaxial pressure

The specific heat c and the heat power W exchanged by a Deuterated Potassium Dihydrogen Phosphate ferroelectric-ferroelastic crystal have been measured simultaneously for both decreasing and increasing temperature at a low constant rate (0.06 K/h) between 175 and 240 K. The measurements were carried out under controlled uniaxial stresses of 0.3 and 4.5±0.1 bar applied to face (110). At Tt=207.9 K, a first order transition is produced with anomalous specific heat behavior in the interval where the transition heat appears. This anomalous behavior is explained in terms of the temperature variation of the heat power during the transition. During cooling, the transition occurs with coexistence of phases, while during heating it seems that metastable states are reached. Excluding data affected by the transition heat, the specific heat behavior agrees with the predictions of a 2-4-6 Landau potential in the range of 4–15 K below Tt while logarithmic behavior is obtained in the range from Tt to 1 K below Tt. Data obtained under 0.3 and 4.5 bar uniaxial stresses exhibit the same behavior.Dirección General de Investigación Científica y Técnica. Gobierno de España-PB91-60