Análisis muestrales desde una perspectiva de género en revistas de investigación de Ciencias de la Actividad Física y del Deporte españolas.

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Variabilidad de la carga fisiológica en los pequeños juegos de fútbol en función del espacio.

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Investigaciones de Econom??a de la Educaci??n : n??mero 5

Alrededor de 125 investigadores procedentes de universidades de todo el mundo se reunieron el 8 y 9 de julio de 2010 en las XIX Jornadas de la Asociaci??n de Econom??a de la Educaci??n que se celebraron en la Facultad de Ciencias Econ??micas y Empresariales de la Universidad de Zaragoza. Esta edici??n de las Jornadas, que la Asociaci??n de Econom??a de la Educaci??n viene celebrando desde 1992, ha estado caracterizada por un marcado car??cter internacional. En concreto el cincuenta por ciento de las sesiones se desarrollan en lengua inglesa. Se ha contado con un gran n??mero de investigadores procedentes de diferentes centros de investigaci??n y universidades extranjeras.

El diccionario y su uso en el aula : estrategias y actividades.

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The complete guide to lesson planning and preparation.

Recurso que proporciona a los profesores asesoramiento sobre temas permanentes en la planificación y preparación de las clases, y les anima a reflexionar sobre sus puntos fuertes y sus debilidades, sus prioridades y necesidades. Ofrece ideas prácticas tomadas de una gran variedad de sectores y de muchas experiencias de profesores, padres y responsables de empresas, además de preguntas para reflexionar y ejercicios. También, utiliza la evaluación para conseguir clases más profesionales y provechosas.

Factores que afectan al aprendizaje del inglés como lengua extranjera.

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Las competencias en la programación de aula (vol. II) : educación secundaria (12-18 años).

Se explica cómo llevar a la práctica la programación por competencias en el aula de secundaria: qué se debe tener en cuenta en esta etapa, las claves esenciales, sugerencias y propuestas para el aula. Se pretende mostrar que el enfoque competencial constituye una orientación estrechamente vinculada al principio de aprendizaje significativo, a las alternativas interdisciplinares, a la estrategia de trabajo por proyectos y a las técnicas para aprender a aprender. Se aportan elementos de trabajo de gran interés para articular líneas de convergencia metodológica con etapas anteriores, tanto para orientadores y tutores como para profesores.

Manuel Brunet i Solà (1889-1956). El periodisme d'idees al servei de la "veritat personal"

This doctoral thesis deals with the intellectual biography of the writer and journalist Manuel Brunet (Vic, 1889, Figueres, 1956). It reconstructs the life and professional studies of the author, and the most important facets of his literature and journalism. In addition, it examines his literary texts. A special emphasis has been placed on the study of journalistic production of Brunet and on the analysis of the professional profile of the author. Examination and assessment of its production has been accurate, including a classification of the items and a comparison of his journalistic style with that of other contemporary authors, both Catalan (Josep Pla and Joseph M. de Sagarra), French (Charles Maurras and Léon Daudet) and English (GK Chesterton and Hilaire Belloc). The latter part of the work analysises the condition of "victor won" of Manuel Brunet after the Spanish Civil War, and how this author is an example of a whole generation of conservative Catalan nationalist witers who lived a difficult situation after the conflict.

La Dictadura de Primo de Rivera a Girona : premsa i societat (1923-1930)

Existeix una acusada tendència en el món historiogràfic a presentar la dictadura de Primo de Rivera com un règim polític monolític i uniforme, amb un únic discurs, sense a penes escletxes. La hipòtesi central de la nostra investigació es fonamenta en la idea que la realitat fou molt distinta, ja que dins el mateix Directori cohabitaren plantejaments substancialment diferents, que provocaren discrepàncies serioses en el si del règim. L'esmentada hipòtesi la intentem demostrar partint de l'anàlisi d'un aspecte concret, però molt important, de la Dictadura que és el que fa referència al propòsit de Primo de Rivera, al nostre entendre fracassat, de fonamentar gran part del seu projecte polític en el fet de desenvolupar una intensa tasca propagandística que havia de servir per transmetre una bona imatge del règim i per inculcar ideologia. El marc territorial investigat és el format per les comarques gironines, on convergeixen tres factors decisius que aporten elements que ajuden a explicar el fracàs del projecte de Primo de Rivera. El primer de caràcter més general, però igualment constatable en l'àmbit gironí, és el relatiu a la mateixa política de premsa del dictador, que es caracteritza per la seva poca definició i per la seva pèssima aplicació. Els dos següents, més específics, incideixen en l'existència de diferents maneres d'entendre la reforma de l'Estat dins el primoriverisme, i en les lluites intestines i localistes entre bàndols ambiciosos de poder.

A satisfação dos estudantes Erasmus em Lisboa

Este trabalho tem como finalidade responder a uma questão central originada a partir do tema geral – A Satisfação dos Estudantes ERASMUS em Lisboa. Torna-se assim objectivo central resolver o problema materializado na seguinte pergunta de partida: Qual o nível de satisfação dos estudantes ERASMUS a estudar em Lisboa? Participaram 67 estudantes, maioritariamente europeus. Os dados foram obtidos através de questionário, sendo que existe uma correlação significativa, negativa e moderada entre o nível de satisfação e as dificuldades sentidas pelos estudantes (rS=-0,450; p=0,000). Os estudantes ERASMUS apresentam maior nível de satisfação em relação às amizades 77,5% e ao lazer 71,6% e menor nível de satisfação na forma como as aulas são dadas 25,4% e na atenção recebida quando interagem com outras pessoas 22,4%. Quanto ao nível de dificuldades sentidas, os estudantes apresentam um nível baixo de dificuldades em fazer compras 89,5% e manter os seus valores e crenças entre os pares 88%. Enquanto apresentam maior nível de dificuldades sentidas em lidar com a burocracia das universidades 25,3% e conseguir um local adequado para morar 20,9%. Existem diferenças estatisticamente significativas no sexo (U(-2,070)=365,500; p=0,038), uma vez que o sexo masculino apresenta maior nível de dificuldades que o sexo feminino (Mfem=30,20; Mmasc=40,38).

"¡Ay, patria mía!": la nación ecuatoriana en el discurso de la prensa

En este trabajo se analizan los sentidos de la nación y los referentes sobre los que se construye la identidad colectiva ecuatoriana en el discurso de la prensa. Para ello la autora investiga los pronunciamientos de representantes de la elite político-económica del Ecuador, de articulistas de los diarios El Universo y El Comercio, y los editoriales de estos medios, durante el proceso de firma de la paz de Ecuador con Perú y del levantamiento popular e indígena de enero del 2000, entendiendo que las coyunturas de crisis son estructuradoras de los sentidos, a la vez que éstos influyen en el desarrollo de los acontecimientos. Lourdes Endara encuentra que los discursos analizados tienen como enunciado general la necesaria superación del pasado y de los mitos simbólicos sobre los que se ha construido la identidad nacional; y que los discursos expresan que solo así se podrá construir una nación progresista y abierta a la globalización; y que los ecuatorianos debemos construir una nueva identidad, aún incierta, que se encontrará en el promisorio futuro de un Estado sin fronteras.

Sex-dependent age modulation of frontostriatal and temporo-parietal activation during cognitive control

Developmental functional imaging studies of cognitive control show progressive age-related increase in task-relevant fronto-striatal activation in male development from childhood to adulthood. Little is known, however, about how gender affects this functional development. In this study, we used event related functional magnetic resonance imaging to examine effects of sex, age, and their interaction on brain activation during attentional switching and interference inhibition, in 63 male and female adolescents and adults, aged 13 to 38. Linear age correlations were observed across all subjects in task-specific frontal, striatal and temporo-parietal activation. Gender analysis revealed increased activation in females relative to males in fronto-striatal areas during the Switch task, and laterality effects in the Simon task, with females showing increased left inferior prefrontal and temporal activation, and males showing increased right inferior prefrontal and parietal activation. Increased prefrontal activation clusters in females and increased parietal activation clusters in males furthermore overlapped with clusters that were age-correlated across the whole group, potentially reflecting more mature prefrontal brain activation patterns for females, and more mature parietal activation patterns for males. Gender by age interactions further supported this dissociation, revealing exclusive female-specific age correlations in inferior and medial prefrontal brain regions during both tasks, and exclusive male-specific age correlations in superior parietal (Switch task) and temporal regions (Simon task). These findings show increased recruitment of age-correlated prefrontal activation in females, and of age-correlated parietal activation in males, during tasks of cognitive control. Gender differences in frontal and parietal recruitment may thus be related to gender differences in the neurofunctional maturation of these brain regions.

In vivo transformations of dihydroartemisinic acid in Artemisia annua plants

[15-(CH3)-C-13-H-2]-dihydroartemisinic acid (2a) and [15-(CH3)-H-2]-dihydroartemisinic acid (2b) have been fed via the root to intact Artemisia annua plants and their transformations studied in vivo by one-dimensional H-2 NMR spectroscopy and two-dimensional, C-13-H-2 correlation NMR spectroscopy (C-13-(2) H COSY). Labelled dihydroartemisinic acid was transformed into 16 12-carboxy-amorphane and cadinane sesquiterpenes within a few days in the aerial parts of A. annua, although transformations in the root were much slower and more limited. Fifteen of these 16 metabolites have been reported previously as natural products from A. annua. Evidence is presented that the first step in the transformation of dihydroartemisinic acid in vivo is the formation of allylic hydroperoxides by the reaction of molecular oxygen with the Delta(4,5)-double bond in this compound. The origin of all 16 secondary metabolites might then be explained by the known further reactions of such hydroperoxides. The qualitative pattern for the transformations of dihydroartemisinic acid in vivo was essentially unaltered when a comparison was made between plants, which had been kept alive and plants which were allowed to die after feeding of the labelled precursor. This, coupled with the observation that the pattern of transformations of 2 in vivo demonstrated very close parallels with the spontaneous autoxidation chemistry for 2, which we have recently demonstrated in vitro, has lead us to conclude that the main 'metabolic route' for dihydroartemisinic acid in A. annua involves its spontaneous autoxidation and the subsequent spontaneous reactions of allylic hydroperoxides which are derived from 2. There may be no need to invoke the participation of enzymes in any of the later biogenetic steps leading to all 16 of the labelled 11,13-dihydro-amorphane sesquiterpenes which are found in A. annua as natural products. (C) 2003 Elsevier Ltd. All rights reserved.

Supramolecular hydrogen-bond structures and magnetic interactions in basal-apical, dinuclear, azide-bridged copper(II) complexes

The synthesis, characterisation, X-ray single crystal structures and magnetic properties of three new basal-apical mu(2)-1,1-azide-bridged complexes [(CuLN3)-N-1](2) (1), [(CuLN3)-N-2](2) (2) and [(CuLN3)-N-3](2) (3) with very similar tridentate Schiff-base blocking ligands {HL1 = N-[2-(ethylamino) ethyl] salicylaldimine; HL2 = 7-(ethylamino)-4-methyl-5-azahept-3-en-2-one; HL3 = 7-amino-4-methyl-5-azaoct-3-en-2-one} have been reported [complex 1: monoclinic, P2(1)/c, a = 8.390(2), b = 7.512(2), c = 19.822(6) Angstrom, beta = 91.45(5)degrees; complex 2: monoclinic, P2(1)/c, a = 8.070(9), b = 9.787(12), c = 15.743(17) A, beta = 98.467(10)degrees; complex 3: monoclinic, P2(1)/n, a = 5.884(7), b = 16.147(18), c = 11.901(12) Angstrom, beta = 90.050(10)degrees]. The structures consist of neutral dinuclear entities resulting from the pairing of two mononuclear units through end-on azide bridges connecting an equatorial position of one copper centre to an axial position of the other, The copper ions adopt a (4+1) square-based geometry in all the complexes. In complex 2, there is no inter-dimer hydrogen-bonding. However, complexes 1 and 3 form two different supramolecular structures in which the dinuclear entities are linked by H-bonds giving one-dimensional systems. Variable temperature (300-2 K) magnetic-susceptibility measurements and magnetisation measurements at 2 K reveal that all three complexes have antiferromagnetic coupling. Magneto-structural correlations have been made taking into consideration both the azido bridging ligands and the existence of intermolecular hydrogen bonds. ((C) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004).

Nanozipper formation in the solid state from a self-assembling tripeptide with a single tryptophan residue

The self-assembly of a terminally protected tripeptide Boc-gamma-Abu(1)-Ala(2)-Trp(3)-OMe (gamma-Abu = gamma-aminobutyric acid) I results in the formation of a nanostructured supramolecular zipper through various non-covalent interactions in the crystal in which the indole side-chain of the Trp(3) residue plays a key role via N-H...pi interactions. (c) 2006 Published by Elsevier Ltd.