948 resultados para Leg Club
Resumo:
El presente trabajo surge a partir de una experiencia de investigación en el marco del taller "Sociología y literatura", y a lo largo de los últimos dos años y medio se ha avanzado en su desarrollo y complejización. Por ello es que intenta ser un aporte a una visión de la cultura que difiere de la sociología de la distinción, colocando en el centro de la escena a los lectores y sus preferencias y gustos para con su objeto de interés. La tesina se aboca al estudio de las experiencias y sensibilidades movilizadas por un grupo de aficionados a la saga Harry Potter (HP) y de todo el universo paralelo que esta historia conlleva. Para ello se han reconstruido, a partir de una serie de entrevistas, elementos significativos de las trayectorias de vida de algunos fanáticos, miembros y ex miembros del "Círculo de Lectores de HP" (CHP) de nuestro país y de otros clubes de lectura vinculados, directa o indirectamente a él. Al mismo tiempo se han desarrollado experiencias de trabajo de campo etnográfico en torno a los diferentes eventos y situaciones sociales de las cuales vienen participando los sujetos de la presente investigación. Con esta estrategia nos proponemos analizar y reconstruir el lugar que HP ocupa en la vida de estas personas, así como las redes de relaciones sociales que entraman y las formas de subjetivación que despliegan a partir de su afición y de su auto reconocimiento como fanáticos del fenómeno
Resumo:
The late Cenozoic history of eolian sedimentation in the eastern Indian Ocean was developed from samples recovered during drilling of Sites 752, 754, and 756. Temporal changes in the mass accumulation rate of eolian material reflect major climatic shifts in the southern African source region. A significant drop in dust mass flux values occurs near the end of the lower Oligocene. Younger sediments are characterized by a gradual reduction in dust accumulation rates until the middle Miocene after which values remain consistently low throughout the late Cenozoic, although a slight increase in eolian accumulation rate occurs near 2.5 Ma. This pattern of dust mass flux appears related to the supply of dust-sized particles in the source region and represents a shift in the climatic regime of southern Africa to increasingly more arid conditions throughout the late Cenozoic.
Resumo:
The purpose of this paper is to report the heavy mineral content of Miocene to Pleistocene sequences drilled during Ocean Drilling Program Leg 174A on the New Jersey Shelf. Sandy intervals recovered from Holes 1071A, 1071F, 1072A, and 1073A were sampled for heavy mineral analysis. Because of the low core recovery of the sandy parts of the succession, sampling has been incomplete. In spite of the resulting restriction and because of major variations in heavy mineral assemblages, eight distinct heavy mineral associations could be defined. The data presented thus considerably extend the present knowledge on the lithology of the stratigraphic record as described by Austin, Christie-Blick, Malone, et al. (1998). In this chapter the heavy mineral associations and their assignment to particular sequences are described.
Resumo:
Sr and Nd isotopic composition of 23 basalts from Sites 556-559 and 561-564. are reported. The 87Sr/86Sr ratios in fresh glasses and leached whole rocks range from 0.7025 to 0.7034 and are negatively correlated with the initial 143Nd/ 144Nd compositions, which range from 0.51315 to 0.51289. The Sr and Nd isotopic compositions (in glasses or leached samples) lie within the fields of mid-ocean ridge basalts (MORB) and ocean island basalts (OIB) from the Azores on the Nd-Sr mantle array/fan plot. In general, there is a correlation between the trace element characteristics and the 143Nd/144Nd composition (i.e., samples with Hf/Ta>7 and (Ce/Sm)N<1 [normal-MORB] have initial 143Nd/144Nd>0.51307, whereas samples with Hf/Ta<7 and (Ce/Sm)N>1 (enriched-MORB) have initial 143Nd/144Nd compositions <0.51300). A significant deviation from this general rule is found in Hole 558, where the N-MORB can have, within experimental limits, identical isotopic compositions to those found in associated E-MORB. The plume-depleted asthenosphere mixing hypothesis of Schilling (1975), White and Schilling (1978) and Schilling et al. (1977) provides a framework within which the present data can be evaluated. Given the distribution and possible origins of the chemical and isotopic heterogeneity observed in Leg 82 basalts, and some other basalts in the area, it would appear that the Schilling et al. model is not entirely satisfactory. In particular, it can be shown that trace element data may incorrectly estimate the plume component and more localized mantle heterogeneity (both chemical and isotopic) may be important.
Resumo:
La presente tesina apunta a comprender el sentido específico que adquiere para un conjunto de nadadores adultos del Club Universitario de La Plata la categoría de master y los modos en que se identifican respecto a ella. En este sentido, a partir de la elaboración y reconstrucción un conjunto de situaciones etnográficas, se analizan diversos aspectos alrededor del aprendizaje de una destreza corporal y la forma en que actores adultos viven una práctica deportiva, reelaboran sus historias de vida, se identifican colectivamente y construyen universos morales específicos. La multiplicidad de definiciones que se ponen en juego alrededor de esta práctica, se articulan en torno a sentidos específicos para las clasificaciones etarias, la vinculación con el cuerpo, la estética corporal y la salud, la superación personal, el sacrificio, la responsabilidad, la diversión y la grupalidad. El problema de investigación es elaborado y analizado empíricamente, a través de un abordaje etnográfico que dialoga críticamente con la bibliografía especializada. Apartándose de las perspectivas que reducen al deporte y a las prácticas del tiempo libre a la dimensión funcional de la reparación y reproducción de la fuerza de trabajo, aquí se procura reponer la dimensión de la agencia entre las prácticas de los sujetos que participan de la experiencia de la 'natación master'
Resumo:
El objetivo de este trabajo de investigación fue describir y analizar las características antropométricas del plantel sub 15 del Club Atlético Juventud de Las Piedras y relacionarlas con sus posiciones dentro del campo de juego. Para llevar adelante este estudio se tomó una muestra de 24 jugadores de entre 14 y 15 años, ésta estuvo compuesta por 1 arquero, 9 defensas, 10 volantes y 5 delanteros. Las características antropométricas descritas y analizadas fueron las 5 masas del cuerpo: masa muscular, masa de tejido adiposo, masa ósea, masa residual y piel (protocolo de Kerr y Ross), el somatotipo (protocolo de Heat y Carter), además del peso y la talla. Para llevar adelante estos protocolos se necesitó recolectar datos de pliegues, perímetros, diámetros, peso y talla. El paradigma que sustenta esta investigación es el positivista y el modelo de investigación es el cuantitativo. El nivel que alcanza este trabajo es de tipo exploratorio. El somatotipo medio del equipo fue 2,5 - 3,9 - 2,9, que corresponde a la categoría mesomorfo balanceado. Para el puesto de arquero el somatotipo fue 4,3 - 5 - 2,5, endo mesomorfico. Para los defensas 2,6 - 4,1 - 3,2, meso ectomorfico. Para los volantes 2,5 - 3,9 - 3,8, ectomorfo mesomorfo y para los delanteros 2,6 - 4,6 - 2,7, mesomorfo balanceado. El porcentaje de tejido adiposo medio del equipo fue del 29,8 , para el puesto de arquero 34,1, para los defensas 29,1, para los volantes 30,18 y para los delanteros 26,65 . El tejido muscular medio fue de 40, para el puesto de arquero 39,2, para los defensas 41,6, para los volantes 39,4 y para los delanteros 43,1. El peso y la talla media del plantel fueron 58,1 kg. Y 169,1 cm. respectivamente. Para el puesto de arquero 58,8 kg. y 165 cm., para los defensas 61,5 kg. Y 171,3 cm., para los volantes 56,4 kg. Y 169,6 cm. y por último para los delanteros 55,6 kg. Y 163,3 cm. Como conclusiones podemos afirmar que el porcentaje de masa muscular encontrado en el plantel estuvo por debajo de la media si los comparamos con equipos de igual edad de la República Argentina, no se encontraron grandes diferencias en cuanto al peso y la talla entre las distintas 3 posiciones dentro del campo de juego, a no ser por los defensas que presenta mayor estatura y mayor peso. El puesto de arquero presenta mayor porcentaje de masa grasa. Como recomendaciones finales para futuras investigaciones se proponen entre otras indagar acerca de posibles causas que influyen en el perfil antropométrico actual de los deportistas evaluados y plantear aspectos dirigidos a optimizar el mismo, realizar un perfil completo de los deportistas y llevar adelante un estudio acerca del estado nutricional de los deportistas
Resumo:
Cenozoic sediments recovered from Sites 548, 549, and 550 were the objects of mineralogical (bulk sample and <2 - µm fraction) and geochemical (HCl extract) studies. Thin sections of rock pebbles embedded in sediments (upper levels at Site 548, particularly) were examined on a polarizing microscope. This study outlines the vertical and lateral variation and evolution of the sedimentation. In the Paleocene and lower Eocene, the clay fraction is abundant and smectite is practically the sole existing clay mineral. High Mn, Al, Fe, Mg, and K contents were measured in HCl extracts. Through the middle Eocene, carbonates become more abundant - highly dominant at Site 548. Metal contents in HCl extracts are very low. The clay fraction, although dominated at all sites by smectites, becomes richer in illite and poorly crystallized chlorite. At the middle/upper Miocene boundary, a significant decrease in the smectite/(illite + chlorite) ratio occurs at all sites, and this decrease continues into the middle Pliocene. This decrease is marked by an abrupt increase of quartz at Site 548. At the two other sites, carbonates remain highly predominant; HCl extracts reflect the relative abundance of the clay and carbonate fractions. After a brief recurrence of smectite in a high-metal-content interval, illite and chlorite become the dominant clay minerals in the upper Pliocene and the Pleistocene, where numerous variations in mineralogical composition occur in the clay fraction (Sites 548 and 549) or in non-clay components (Site 548). Several pebbles of various nature and origin, encountered in different levels of this interval at Site 548, appear to have an ice-rafting origin. This study points out three main breaks in the general evolution of the sedimentation: the first, corresponding to the lower/middle Eocene boundary, is marked by the increase of carbonates and associated elements; the second, corresponding to the middle/upper Miocene boundary, is marked by a major decrease of the smectite/(illite + chlorite) ratio at all sites and by a massive appearance of quartz at Site 548; and the third, which occurred toward the late Pliocene, is marked by the dominance of primary clay minerals and the arrival of ice-rafted pebbles. Our interpretation of results considers paleohydrological and paleoclimatic phenomena. It is suggested that the major middle/late Miocene break was associated with an increase of the deep bottom-water circulation between the Norwegian Sea and the North Atlantic Ocean, and/or a climatic evolution: humidification and cooling of climate. The changes toward the late Pliocene appear to have been the first effects of the glaciations at the end of Cenozoic.
Resumo:
We collected 20 carbonate nodules from the inner trench slope deposits of the Middle America Trench area off Mexico. Carbonate nodules are found only within the methane-rich layer beneath the mixed layer of methane and hydrogen sulfide. They have been investigated by microscopic, scanning electron microscopic (SEM), X-ray diffraction, and stable isotopic analytical methods. Calcite, magnesian calcite, dolomite, and rhodochrosite were recognized as carbonate minerals. Each carbonate nodule is usually represented by single species of carbonate minerals. Carbonate nodules are subdivided into micrite nodules and recrystallized nodules according to textural features. The carbonate crystallites in each micrite nodule are equidimensional. Their sizes range from several to 30 µm, as revealed by SEM micrographs. The chemical composition of calcite is changed from pure calcite to high magnesian calcite, as shown by the shift of the (104) reflection in X-ray diffraction patterns. Fe substitution for Ca in dolomite was also observed. Carbon isotopic composition shows an unusually wide range - from -42.9 to +13.5 per mil - in PDB scale, whereas oxygen isotopic compositions of almost all the carbonate nodules are constantly enriched in 18O from +3.4 to +7.60 per mil in PDB scale. These wide variations in carbon isotopic composition indicate several sources for the carbon in carbonate nodules. Carbon with a negative d13C value was derived from biochemical oxidation of methane with a negative d13C value. On the other hand, carbon with positive d13C value was probably formed during methane production in an anoxic condition.
Resumo:
Stable carbon and nitrogen isotopic compositions as well as organic carbon and total nitrogen contents are reported for Site 645 in Baffin Bay and Sites 646 and 647 in the Labrador Sea. Both low-resolution analyses (1 sample/section) and high-resolution results (up to 7 samples/section) are presented. These records indicate that large-scale changes in productivity since the middle Miocene have occurred in Baffin Bay. Such changes are not evident in samples from the Labrador Sea. Isotopic records of all the sites are influenced strongly by rapidly changing influxes that combine terrigenous debris with planktonic production. In parts of the cores, relationships to other phenomena, such as ice stages, are present. However, these correlations are not common and indicate that these events were masked by the dynamic changes in sources of organic matter occurring in this complex system.