1000 resultados para Trastorns del pànic -- Aspectes genètics
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Aquest article recull les aportacions abocades al voltant de la literatura com a eina per construir les identitats, personals (de gènere i/o sexual) i col·lectives (i/o nacionals) en el fòrum de debat del II Simposi d’Ensenyament de la Literatura i la Llengua. A partir de la proposta de diverses preguntes bastírem ponts de conversa referents a qüestions com ara la formació del professorat en qüestions de gènere, l'explicitació o no a l'aula les diverses formes de desig sexual, el trencament dels tòpics masculí/femení, el paper cabdal de l'etnopoètica com a eina per construir la identitat nacional o la delimitació i popularització dels símbols i mites col·lectius. El text inclou també propostes de textos per a treballar a l'aula els aspectes sobre els quals reflexionem.
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Aquest article pretén bastir una comparativa entre la figura teratològica mostrada a l’obra A les muntanyes de la follia de Howard Phillips Lovecraft i La pell freda d’Albert Sánchez Piñol. Una comparativa que té per finalitat mostrar com Howard Phillips Lovecraft inicia una evolució en el gènere de por (basada en la introducció de la versemblança en les narracions d’aquest gènere a través d’un racionalisme que connecta amb exactitud tots els elements de la narració, tot introduint una realitat que contrasta amb allò sobrenatural i crea la por als ulls del lector) que és assumida per Sánchez Piñol en alguns aspectes i transgredida en altres. Així, aquest darrer autor traspassa la frontera infranquejable entre humans i monstres que planteja Lovecraft en humanitzar el monstre, tot atribuint-li qualitats físiques i psicològiques humanes. Una acció que ocasiona un sentiment d’empatia dels personatges humans envers els monstres que derivarà, en última instància, en un intent d’aproximació d’aquests al monstre. O, dit d’una altra manera, en una aproximació de l’ésser humà a l’obscuritat, espai que, lluny de ser perniciós per aquest, l’ajudarà a assolir un coneixement aprofundit de si mateix. Una característica del text de Sánchez Piñol que atorga a La pell freda (i a la major part de l’obra de l’autor) un important valor antropològic i sociològic que pot salvaguardar la narrativa de por de la tendència a desaparèixer que experimenta en una societat cada cop més marcada per l’escepticisme.
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La consolidación del fútbol en España se produjo a partir de los años veinte del siglo pasado. Entre 1920 a 1936 el fútbol adquirió todos los rasgos personales que hoy le caracterizan. En esta época surgió una literatura técnica y periodística especializada que se configuró como uno de los pilares más importantes para el desarrollo técnico deportivo y del espectáculo de masas. En torno a esta cuestión, el presente artículo busca un doble objetivo: recopilar la literatura técnica y periodística especializada publicada durante el período de 1920 a 1936, y reconocer el alcance social, técnico e ideológico de esta literatura futbolística en el proceso de configuración del fútbol en España. Para abordar este propósito hemos utilizado una metodología heurística y de análisis documental de las fuentes originales. Apreciamos que a través de estas obras podemos conocer mejor el contexto del espacio socio-deportivo del fútbol en España y, también, despertar nuevas líneas potenciales de investigación.
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Universidade Estadual de Campinas . Faculdade de Educação Física
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En este trabajo fueron determinados experimentalmente el calor específico, conductividad térmica, difusividad térmica y densidad del jugo de lulo en el rango de contenido de agua de 0.55 a 0.90 (p/p en base húmeda) y en temperaturas variando de 4 a 78.6 °C. La conductividad térmica y el calor específico fueron obtenidos utilizando el mismo aparato - una célula constituida de dos cilindros concéntricos - operando en estado estacionario y no- estacionario, respectivamente. La difusividad térmica fue obtenida a través del método de Dickerson y la densidad determinada por picnometria. Tanto la temperatura como el contenido de agua presentaron una fuerte influencia en los datos experimentales de las propiedades termofísicas del jugo de lulo. Los resultados obtenidos fueron utilizados para obtener modelos matemáticos y predecir estas propiedades en función de la concentración y la temperatura.
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The HR Del nova remnant was observed with the IFU-GMOS at Gemini North. The spatially resolved spectral data cube was used in the kinematic, morphological, and abundance analysis of the ejecta. The line maps show a very clumpy shell with two main symmetric structures. The first one is the outer part of the shell seen in H alpha, which forms two rings projected in the sky plane. These ring structures correspond to a closed hourglass shape, first proposed by Harman & O'Brien. The equatorial emission enhancement is caused by the superimposed hourglass structures in the line of sight. The second structure seen only in the [O III] and [N II] maps is located along the polar directions inside the hourglass structure. Abundance gradients between the polar caps and equatorial region were not found. However, the outer part of the shell seems to be less abundant in oxygen and nitrogen than the inner regions. Detailed 2.5-dimensional photoionization modeling of the three-dimensional shell was performed using the mass distribution inferred from the observations and the presence of mass clumps. The resulting model grids are used to constrain the physical properties of the shell as well as the central ionizing source. A sequence of three-dimensional clumpy models including a disk-shaped ionization source is able to reproduce the ionization gradients between polar and equatorial regions of the shell. Differences between shell axial ratios in different lines can also be explained by aspherical illumination. A total shell mass of 9 x 10(-4) M(circle dot) is derived from these models. We estimate that 50%-70% of the shell mass is contained in neutral clumps with density contrast up to a factor of 30.
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This is the first in a series of three articles which aimed to derive the matrix elements of the U(2n) generators in a multishell spin-orbit basis. This is a basis appropriate to many-electron systems which have a natural partitioning of the orbital space and where also spin-dependent terms are included in the Hamiltonian. The method is based on a new spin-dependent unitary group approach to the many-electron correlation problem due to Gould and Paldus [M. D. Gould and J. Paldus, J. Chem. Phys. 92, 7394, (1990)]. In this approach, the matrix elements of the U(2n) generators in the U(n) x U(2)-adapted electronic Gelfand basis are determined by the matrix elements of a single Ll(n) adjoint tensor operator called the del-operator, denoted by Delta(j)(i) (1 less than or equal to i, j less than or equal to n). Delta or del is a polynomial of degree two in the U(n) matrix E = [E-j(i)]. The approach of Gould and Paldus is based on the transformation properties of the U(2n) generators as an adjoint tensor operator of U(n) x U(2) and application of the Wigner-Eckart theorem. Hence, to generalize this approach, we need to obtain formulas for the complete set of adjoint coupling coefficients for the two-shell composite Gelfand-Paldus basis. The nonzero shift coefficients are uniquely determined and may he evaluated by the methods of Gould et al. [see the above reference]. In this article, we define zero-shift adjoint coupling coefficients for the two-shell composite Gelfand-Paldus basis which are appropriate to the many-electron problem. By definition, these are proportional to the corresponding two-shell del-operator matrix elements, and it is shown that the Racah factorization lemma applies. Formulas for these coefficients are then obtained by application of the Racah factorization lemma. The zero-shift adjoint reduced Wigner coefficients required for this procedure are evaluated first. All these coefficients are needed later for the multishell case, which leads directly to the two-shell del-operator matrix elements. Finally, we discuss an application to charge and spin densities in a two-shell molecular system. (C) 1998 John Wiley & Sons.
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The Bandas del Sur Formation preserves a Quaternary extra-caldera record of central phonolitic explosive volcanism of the Las Canadas volcano at Tenerife. Volcanic rocks are bimodal in composition, being predominantly phonolitic pyroclastic deposits, several eruptions of which resulted in summit caldera collapse, alkali basaltic lavas erupted from many fissures around the flanks. For the pyroclastic deposits, there is a broad range of pumice glass compositions from phonotephrite to phonolite. The phonolite pyroclastic deposits are also characterized by a diverse, 7-8-phase phenocryst assemblage (alkali feldspar + biotite + sodian diopside + titanomagnetite + ilmenite + nosean-hauyne + titanite + apatite) with alkali feldspar dominant, in contrast to interbedded phonolite lavas that typically have lower phenocryst contents and lack hydrous phases. Petrological and geochemical data are consistent with fractional crystallization (involving the observed phenocryst assemblages) as the dominant process in the development of phonolite magmas. New stratigraphically constrained data indicate that petrological and geochemical differences exist between pyroclastic deposits of the last two explosive cycles of phonolitic volcanism. Cycle 2 (0.85-0.57 Ma) pyroclastic fall deposits commonly show a cryptic compositional zonation indicating that several eruptions tapped chemically, and probably thermally stratified magma systems. Evidence for magma mixing is most widespread in the pyroclastic deposits of Cycle 3 (0.37-0.17 Ma), which includes the presence of reversely and normally zoned phenocrysts, quenched mafic glass blebs in pumice, banded pumice, and bimodal to polymodal phenocryst compositional populations. Syn-eruptive mixing events involved mostly phonolite and tephriphonolite magmas, whereas a pre-eruptive mixing event involving basaltic magma is recorded in several banded pumice-bearing ignimbrites of Cycle 3. The periodic addition and mixing of basaltic magma ultimately may have triggered several eruptions. Recharge and underplating by basaltic magma is interpreted to have elevated sulphur contents (occurring as an exsolved gas phase) in the capping phonolitic magma reservoir. This promoted nosean-hauyne crystallization over nepheline, elevated SO3 contents in apatite, and possibly resulted in large, climatologically important SO2 emissions.
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O principal objetivo deste livro ?? constituir uma fonte de pesquisa para o estudo do processo de produ????o e implementa????o de pol??ticas p??blicas. Por meio de textos selecionados, analisa-se o pr??prio conceito de pol??ticas p??blicas, discute-se as defini????es utilizadas para distinguir suas diversas fases e apresenta-se algumas das principais correntes te??ricas de an??lise sobre o processo de pol??ticas p??blicas.