José Soteras Mauri y Lorenzo García-Barbón. 3 (espacios) a cubierto

José Soteras y Lorenzo García-Barbón, coautores del Camp Nou junto a Francisco Mitjans, construyeron en la década de los cincuenta una serie de proyectos de uso público para actos religiosos y deportivos. Paradigmático del trabajo de Soteras fue el Altar Mayor del XXXV Congreso Eucarístico Internacional de Barcelona (1952), y ya en colaboración, el Palacio Municipal de Deportes de Barcelona (1954-1955) y el destruido Palacio de Deportes de Madrid (1955-1960). Es posible reseguir en estas obras una secuencia evolutiva, función de la relación entre forma y geometría de la estática; transformando la obligada austeridad económica del momento en virtud espacial.José Soteras Mauri and Lorenzo García-Barbón played a privileged role in the hierarchy of the Barcelona architectural scene in the 50’s and 60’s. They both developed a prolific work, mostly omitted by the specialized post-francoist critics. Their public designs were mainly characterized by the expressive use of structural elements. Thus, this form generative system settles back the typological questions. It has been selected three public building works, all three were characterized by the relation in between statics, geometry and interior space. The first case of study, the XXXV Eucharistic Congress Major Altar was developed in Barcelona in 1952. This design starts a new structural experimentation process based on counterweights and tensor systems. The second case is the Barcelona Municipal Sports Arena ( 1954-1955). It was solved through a triple articulated arch system. This structural and spatial system was pragmatically developed to solve the tight construction schedule. Meanwhile, they were developing together with Francisco Mitjans the Camp Nou tribune canopy. Its structure was again characterized by a counterbalance and tensors static system. On his own, Soteras designed the San Pio x Church in the Congreso Eucarístico neighbourhood in Barcelona. This spin off work explores a nerved vault structure. Final case of study is Madrid Sports Arena ( 1955- 1960). It was built together again by Soteras and García-Barbón. This work combines all the previous structural systems, tensors, counterweights and arches. Thus, it could be detected a structural solution process of continuity and change. In an austere economic period, this defines an evolutionary sequence where form and statics geometry intertwine in a new spatial richness

Controlling the spin of metal atoms adsorbed on oxide surfaces: Ni on regular and defective sites of the MgO(001) surface

We have analyzed the relative energy of nonmagnetic and magnetic low-lying electronic states of Ni atoms adsorbed on regular and defective sites of the MgO(001) surface. To this end cluster and periodic surface models are used within density functional theory. For Ni atoms adsorbed on oxygen vacancies at low coverage, the interaction energy between the metal and the support is much larger than on regular sites. Strong bonding results in a diamagnetic adsorbed species and the energy required to reach the high-spin state increases. Moreover, a correlation appears between the low-spin to high-spin energy difference and the interaction energy hypothesizing that it is possible to prepare the surface to tune the high-spin to low-spin energy difference. Magnetic properties of adsorbed thin films obtained upon increasing coverage are more difficult to interpret. This is because the metallic bond is readily formed and dominates over the effect of the atoms directly bound to the vacancy

Psychometric Properties of the Barrier Autoinform for the Practice of the Physical Exercise (ABPEF)

El estudio consistió en examinar las propiedades psicométricas del cuestionario de autoinforme de barreras para la práctica del ejercicio físico (ABPEF) y comprobar el efecto del género sobre dichas barreras. Se han estudiado sus propiedades psicométricas con una muestra de 342 adolescentes (media de edad: 15.02±1.86). Se realizaron análisis de confiabilidad, análisis factorial exploratorio, correlación ítem con puntaje total y análisis factorial confirmatorio. Se encuentra una buena confiabilidad interna (α = .86), adecuada correlación ítem con puntaje total, y la presencia de cuatro factores en el análisis factorial exploratorio con correlaciones significativas entre las mismas. El análisis factorial confirmatorio mostró adecuado ajuste a los datos de un modelo tetrafactorial del cuestionario (χ2 /gl = 3.696; GFI=.89; AGFI=.86; RMSEA=.061). El género femenino presenta mayores barreras para la práctica del ejercicio físico. Este cuestionario es un instrumento fiable y válido y se sugiere su uso en futuras investigacionesThe objective of this study was to examine the psychometric properties of the self-report questionnaire for physical exercise (ABPEF). And to chek the effect of gender on those barriers. Their psychometric properties were studied with a sample of 342 adolescents (mean age: 15.02 ± 1.86). We performed reliability analysis, exploratory factor analysis, item correlation with total score and confirmatory factor analysis. We found a good internal reliability (α = .86), an adequate item correlation with total score, and the presence of four factors in the exploratory factor analysis with significant correlations between them. The confirmatory factor analysis showed adequate adjustment to the data of a tetrafactorial model of the questionnaire (χ2 / gl = 3.696; GFI = .89; AGFI = .86; RMSEA = .061). The female gender presents greater barriers to the practice of physical exercise. This questionnaire is a reliable and valid instrument for the population under study, and its use in future research is suggeste

Número de ciclos cortos necesarios para inducir la diapausa en huevos y larvas de Sesamia nonagrioides (Lefebvre)

Se sometieron huevos de Sesamia nonagrioides (LEFEBVRE) durante su desarrollo embrionario a fotoperiodo corto 12:12 (L:O) y posteriormente a fotoperiodos 16:8 y 0:24, sin observar que se hubiera inducido diapausa en ellos. Las larvas neonatas sometidas a 1, 2, 3, 4 ó 5 ciclos cortos (12:12) no manifestaron diferencias en la duración del desarrollo respecto de las larvas sometidas a fotoperiodo 16:8 y por tanto no manifestaron diapausa. Las diferencias de desarrollo se manifestaron cuando las larvas neonatas se sometieron a 8 ó más ciclos cortos (12:12), por lo tanto, fueron necesarios 8 ó mas ciclos cortos para inducir la diapausa en las larvas neonatas.Sesamia nonagrioides eggs were submitted during their embryonic development to short photoperiodic cycles (12:12) and after that to long photoperiodic cycles (16:8) and 0:24 without observing diapause induction in them. Neonate larvae submitted to 1,2, 3, 4 or 5 short cycles (12:12) didn't show differences in duration of development with regard to the larvae submitted to 16:8. Hence, they didn't show diapause induction. Differences in the duration of development were shown when neonate larvae were submitted to 8 or more short cycles. So, 8 or more short cycles were needed to induce diapause in neonate larvae

Antiferromagnetism in four dimensions: search for non-triviality

We present antiferromagnetism as a mechanism capable of modifying substantially the phase diagram and the critical behaviour of statistical mechanical models. This is particularly relevant in four dimensions, due to the connection between second order transition points and the continuum limit as a quantum field theory. We study three models with an antiferromagnetic interaction: the Ising and the O(4) Models with a second neighbour negative coupling, and the \RP{2} Model. Different conclusions are obtained depending on the model.Comment: 4 pages LateX. Contribution to Lat9

Low Levels of Amyloid Precursor Protein (APP) Promote Neurogenesis and Decrease Gliogenesis in Human Neural Stem Cells

Amyloid precursor protein (APP) has been widely studied due to its association with Alzheimer's disease (AD). However, the physiological functions of APP are still largely unexplored. APP is a transmembrane glycoprotein whose expression in humans is abundant in the central nervous system. Specifically, several studies have revealed the high expression of APP during brain development. Previous studies in our laboratory revealed that a transient increase in APP expression induces early cell cycle exit of human neural stem cells (hNSCs) and directs their differentiation towards glial cells (gliogenesis) while decreasing their differentiation towards neurons (neurogenesis). In the present study, we have evaluated the intrinsic cellular effects of APP down-expression (using siRNA) on cell death, cell proliferation, and cell fate specification of hNSCs. Our data indicate that APP silencing causes cellular effects opposite to those obtained in previous APP overexpression assays, inducing cell proliferation in hNS1 cells (a model line of hNSCs) and favoring neurogenesis instead of gliogenesis in these cells. In addition, we have analyzed the gene and protein expression levels of β-Catenin as a possible molecule involved in these cellular effects. These data could help to understand the biological role of APP, which is necessary to deepen the knowledge of AD.This research was supported by a grant from the Spanish Ministry of Science and Innovation (RTI2018-101663-B-100) and grant number PID2021-126715OB-I00 funded by MCIN/AEI/10.13039/501100011033 and by “ERDF A way of making Europe”. R.C. was supported by an FPU predoctoral contract from Universidad de Alcalá (FPU-UAH).S

Vuelos de la defoliadora de maíz, pastos y céspedes, Mythimna (Pseudaletia) unipuncta (Haworth) en la zona de Lleida

Mythimna unipuncta causa daños en gramíneas cultivadas (principalmente maíz) y céspedes cuya importancia ha ido aumentando los últimos años. En nuestra región presenta cuatro vuelos de adultos. Los daños causados por la descendencia del primer y cuarto vuelo no han sido apreciables, mientras que la descendencia del segundo vuelo ha causado daños de consideración en algunos campos de maíz y la del tercero en céspedes públicos. Se han calculado los grados -día necesarios para completar cada generación en campo y en el laboratorio. Se ha observado que casi todas las hembras capturadas del cuarto vuelo estaban apareadas y habían depositado sus huevos.Mythimna unipuncta causes damages in gramineous tillage plants (mainly maize) and lawns, which importance has increased in the last years. In our region the species shows four nights of adults. Damages caused by the offspring of the first and fourth flight have not been noticeable. Offspring of the second generation of adults has produced noticeable damages in some maize crops and offspring of the adults of the third flight has produced damages in public lawns. Degree-days necessaries for each complete generation have been calculated in field and in laboratory. Nearly all females of the fourth flight caught in light traps were mated and had laid their eggs

Adsorption energy and spin state of first-row transition metals adsorbed on MgO(100)

Slab and cluster model spin-polarized calculations have been carried out to study various properties of isolated first-row transition metal atoms adsorbed on the anionic sites of the regular MgO(100) surface. The calculated adsorption energies follow the trend of the metal cohesive energies, indicating that the changes in the metal-support and metal-metal interactions along the series are dominated by atomic properties. In all cases, except for Ni at the generalized gradient approximation level, the number of unpaired electron is maintained as in the isolated metal atom. The energy required to change the atomic state from high to low spin has been computed using the PW91 and B3LYP density-functional-theory-based methods. PW91 fails to predict the proper ground state of V and Ni, but the results for the isolated and adsorbed atom are consistent within the method. B3LYP properly predicts the ground state of all first-row transition atom the high- to low-spin transition considered is comparable to experiment. In all cases, the interaction with the surface results in a reduced high- to low-spin transition energy

Gathering and consumption of wild fruits in the East of the Iberian Peninsula from the 3rd to the 1st millennium BC

The multiple archaeobotanical studies from the east Iberian Peninsula from 2800 cal. BC to 200 BC have provided around twenty wild fruit taxa of varying importance. The aim of this work is to present these taxa and analyse the most important wild fruits, some of them being cultivated since the First Iron Age. Considering sites with comparable sampling methods, a quantitative difference is not observed between wild species exploited in the several life zones represented in this synthesis: Thermo-, Meso-, Supra- and Montane-Mediterranean zones. Three taxa are common in the three life zones considered: Quercus sp., Sambucus sp. and Rubus sp. More thermophilic taxa, Ficus carica and Olea europaea, are present in the two lower zones, although their values decrease to the north we go and with height, in contrast to what happens with Vitis vinifera. The exploitation of wild resources as a food supplement, in addition to other uses, developed during the 2600 years with several differences. These differences are explained in part by the plants that grow in each of the territories and in part by the organization of the human groups and the forms of land exploitation. Protohistoric human groups would have exploited nearby resources as in the previous periods, and all data confirm the continuity of this fundamental activity. However, gathering seems to have had a fairly small economic importance when considering the low rates of ubiquity of these plants in contrast to those of staple crops.The participation of Natàlia Alonso in this work was supported by the projects HAR2012-36877 and SGR2014-273