Habitualmente el registro en los sitios de Por otro lado, tener una relación de pareja nunca ha sido. ¿Cuáles son los mejores “sites” para flirtear, ligar o tener algo serio? para aquellos individuos que buscan una aventura fuera de su relación. Esta web es una de las webs de citas con mayor probabilidad de ligar, pero lo que se busca no. Nosotros, vamos a recomendarte los 7 mejores sitios para encontrar tu cita perfecta. En el mundo hay gente que destaca por su belleza y, existe un sitio de citas Una relación en la que se comparten los mismos gustos, tiene mayores. La probé durante algunos meses y no me decepcionó para nada. POF es ideal tanto para encontrar pareja como para tener citas sexuales sin compromiso. Ninguna de ellas me convenció, aunque eso probablemente es culpa mía. ![]() Si no, prefiero sólo sexo. Creo que merece la pena. ![]() C-Date me permitió tener 12 citas en 3 meses, lo que me parece una cifra decente teniendo en cuenta el poco esfuerzo que tuve que hacer para conseguirlas. Tuve ocasión de probarla durante 3 meses durante los cuales tuve citas con 8 chicas. Puedes leer mi opinión de Amor en línea aquí. SITIOS de CITAS POR INTERNET EXTRAÑOS y PERTURBADORESEn general con ninguna me sentí cómodo si no tenemos en cuenta el sexo, que fue bastante decente con todas ellas. Encuentra mujeres latinas 8 C-Date 9 Be2 10 Amor en línea. Las 4 mejores páginas de citas para buscar pareja y ligar en internetPara los médicos y los profesionales de la salud, ser mayor significa tener 70 años porque es entonces cuando comienzan a aparecer los problemas graves de salud. Sin embargo, en el campo de las citas y las citas en línea, los ciudadanos mayores son personas mayores de cincuenta años de edad. Share Tweet Estamos tan contentos con ashlley madison que vamos a sortear cada mes créditos gratis para nuestros lectores. Registro Gratuito SOLO aquí El segundo paso es que compres mínimo créditos y que los uses, si eres el ganador te reembolsaremos por paypal o por transferencia el importe de créditos. Hay diferentes tipos de sitios mejores sitios de citas de relacion citas para esta categoría de edad. 3) weebly: fundado en , es tal vez el sitio de citas más famoso y 5) weebly: el sitio se publicita como "lo último en relaciones. Se inscribió en Jdate, un sitio de citas en línea para judíos solteros. . “Es un mito que algunos sitios son mejores para conseguir una relación. Queríamos destacar los diferentes tipos de sitios para que puedas tener una idea del ambiente que se siente entre los miembros. Para mejores sitios de citas de relacion personas mayores que quieren conocer a alguien por una noche o para toda la vida, hay sitios para relajarse y disfrutar de los placeres de la vida que le permiten conocer a personas de un tipo de cuerpo o edad específica. La mayoría de las personas mayores prefieren estos sitios que muestran una tendencia simplista en su interfaz al ofrecer una gran facilidad de uso a sus usuarios. Para las personas mayores que todavía tienen dificultad para dominar un ordenador o smartphone estos sitios son ideales para poner encuentros a su alcance. Una referencia en este campo es Parshipun sitio de citas por afinidades con un lugar importante para los mayores. Antes de la llegada de Internet, la gente que buscaba amor se dirigió a las agencias matrimoniales, pero lo que necesita saber es que las agencias matrimoniales nos cobran tasas de solicitud bastante caras. La cuota de solicitud es algo que no existe en los sitios de citas, que a veces son incluso gratis en su totalidad. Se han creado tantas instalaciones que es imposible no sentirse tentado por lo que nos ofrecen las nuevas tecnologías. Mejores sitios de citas de relacion sitios como C-date o solteros50 que permiten citas de una noche, incluso si estos dos sitios son mayormente serios. No te desesperes y, sobre todo, no dudes en cuidarte.
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Deutsche Telekom también proporciona salidas para conectarse a internet. Wi-Fi es gratis los primeros 30 minutos. El aeropuerto cuenta con suficientes restaurantes, bares y cafés en las dos terminales, algunos de ellos abiertos las 24 horas. El Shopping Plaza en el nivel 2 de la terminal 2 tiene varias tiendas de marcas inernacionales. ![]() La oficina de objetos perdidos tel: Hay taquillas para dejar el equipaje en las dos terminales tel: Hay varias farmacias y una clínica abierta las 24 horas. También existe una peluquería y un salón de manicura y un casino, todos en la Terminal 1. ![]() Las dos terminales cuentan con agencias de viajes para hacer reservas o solicitar información. El Airport Conference Centre tel: Tambien hay oficinas alquilables para presentaciones en la Terminal 2. Los pasajeros de primera clase que viajan con Lufthansa pueden usar una zona adyacente a la Terminal 1. 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Encuentra alojamientos únicos y anfitriones locales en países. Large-scale prediction maps derived from our models assisted in. Egg masses of the Patagonian squid Doryteuthis Amerigo gahi attached to giant kelp Macrocystis pyrifera in the sub-Antarctic ecoregion. Full Text Available Egg masses of the Patagonian squid Doryteuthis Amerigo gahi attached to giant kelp Macrocystis pyrifera in the Magellanic channels of the sub-Antarctic ecoregion in southern South America is documented for the first time. Of seven egg masses observed between andone was taken to the laboratory to be analysed and photographed. Comprising long transparent capsules containing eggs, the masses were strongly attached to the stipes of M. This macroalgae is a potentially important economic resource due to its multiple industrial uses; this study shows that it also serves an important ecological role as a spawning substrate for D. Zoonotic parasites associated with felines from the Patagonian Holocene. Full Text Available Feline coprolites were examined for parasites with the aim of studying ancient infections that occurred in the Patagonian region during the Holocene period. Eggs compatible to Trichuris sp. Cestoda and Eimeria macusaniensis Coccidia were recovered from faecal samples. The results obtained from the analysis provide evidence of consumption by felids of the viscera of both rodents and camelids. This knowledge allows for improved explanations as to the distribution of parasitism and its significance to the health of humans and animals inhabiting the area under study during the Middle Holocene. Melting of the Patagonian Ice Sheet and deglacial perturbations of the nitrogen cycle in the eastern South Pacific. We report the last glacial-interglacial transition of marine denitrification off northern Chile based on sedimentary nitrogen isotopes. Our results show a relatively early, large and abrupt transition from low to high denitrification regimes consistent with recently-reported data from off Peru. The deglaciation is characterized by millennial-scale adjustments of the oxygen minimum zone that mimic the atmospheric temperature record from Antarctica. We also show that the sharp denitrification onset was not caused by an increase in local primary productivity, nor by ventilation changes occurring in the Southern Ocean, as previously proposed. We found that the magnitude and timing of the deglacial denitrification changes are in close agreement with the fresh-water pulses that resulted from the melting of the Patagonian Ice Sheet. We consequently attribute the deglacial onset of marine denitrification in the area to a collapse of the thermocline ventilation occurred at the mid-latitude subduction region of the eastern South Pacific. Two 6-m long sediment cores drilled in the two basins of Lake Caviahue give new evidence of the impact of natural hazards such as ash fallouts linked to nearby volcanic eruptions in the ecologically sensitive environment of the high-altitude region of the Argentinan Patagonian Andes. The two cores show distinct signals of changes in autochthonous productivity and terrigenous input into the lake from ash fallout as well as from river load and shore erosion. Multiproxy records of the sediments indicate whether these changes can be related to volcanic activity. High values of magnetic susceptibility in the cores reflect periods of basaltic ash fallouts during eruptions of the nearby Copahue Volcano. The southern basin is located in the prevalent direction of ash fallouts and has been affected by these volcanic inputs more intensely than the northern basin of the lake. In contrast, sedimentation and authochthonous productivity in the northern basin are strongly affected by fluvial inputs such as suspended river load and acidic stream waters. Do soil organisms affect aboveground litter decomposition in the semiarid Patagonian steppe, Argentina? Surface litter decomposition in arid and semiarid ecosystems is often faster than predicted by climatic parameters such as annual precipitation or evapotranspiration, or based on standard indices of litter quality such as lignin or nitrogen concentrations. Abiotic photodegradation has been demonstrated to be an important factor controlling aboveground litter decomposition in aridland ecosystems, but soil fauna, particularly macrofauna such as termites and ants, have also been identified as key players affecting litter mass loss in warm deserts. Our objective was to quantify the importance of soil organisms on surface litter decomposition in the Patagonian steppe in the absence of photodegradative effects, to establish the relative importance of soil organisms on rates of mass loss and nitrogen release. We estimated the relative contribution of soil fauna and microbes to litter decomposition of a dominant grass using singles de la valette du var meteo agricole with variable mesh sizes that excluded groups of soil fauna based on size class 10, 2, and 0. We also employed chemical repellents naphthalene and fungicide. In contrast, reduction of fungal activity significantly inhibited litter decomposition P soil fauna have been mentioned as a key control of litter decomposition in warm deserts, biogeographic legacies and temperature limitation may constrain the importance of these organisms in temperate aridlands, particularly in the southern hemisphere. Paleomagnetic evidence of a large counter-clockwise rotation during the closure of the Rocas Verdes basin. The southernmost Andes of Patagonia and Tierra del Fuego present a prominent arc-shaped structure, the Patagonian Orocline. Despite the fact that this major structure was already described by Alfred Wegener in his singles de la valette du var meteo agricole textbook infew paleomagnetic studies have been attempted to describe the rotations associated with the formation of the Patagonian Orocline. Characteristic Remanent Magnetizations ChRMs obtained from the Rocas Verdes Basin tectonic province correspond to secondary magnetizations postdating the early phase of folding. Pyrrhotite is the main magnetic carrier in some of these sites. Few sites from sediments of the Magallanes fold and thrust belt have stable ChRM. The available paleomagnetic results show that no rotation has occurred in the Provincia of Ultima Esperanza In the southern part of Provincia de Magallanes and Tierra del Fuego. Didymosphenia geminata invasion in South America: Ecosystem impacts and potential biogeochemical state change in Patagonian rivers. The diatom Didymosphenia geminata has emerged as a major global concern, as both an aggressive invader of rivers and streams in the southern hemisphere, and for its ability to form nuisance blooms in oligotrophic systems in its native range. The Patagonian invasion represents a distinct challenge compared to other regions; not only are affected systems poorly characterized, but also a general synthesis of the nature and magnitude of ecosystem impacts is still lacking. The latter is essential in evaluating impacts to ecosystem services, forms the basis for a management response that is proportional to the potentially valid threats, or aids in the determination of whether action is warranted or feasible. Based on a revision of the recent literature, some of the most significant impacts may be mediated through physical changes: Surveys conducted during the early invasion in Chile show a strong correlation between benthic biomass and associated fine sediments, both of which were one-two orders of magnitude higher within D. Experimental phosphorous amendments showed significant abiotic uptake, while interstitial water in D. A dominant and aggressive stalk-forming diatom with this combination of characteristics is in sharp contrast to the colonial cyanobacteria and bare gravel substrate that characterize many Patagonian streams. The potential displacement of native benthic algal communities with contrasting functional groups. Seroprevalencia de hantavirus en roedores y casos humanos en el sur de la Argentina Hantavirus seroprevalence in rodents and human cases in southern Argentina. El objetivo del presente trabajo es presentar nueva información sobre especies de roedores portadores de hantavirus en Argentina, su prevalencia de anticuerpos para hantavirus período y la relación del tamaño de las poblaciones de roedores y su seroprevalencia con la ocurrencia de casos humanos período Para ello, se procedió a la colocación de trampas para captura viva de roedores, tipo sherman en seis operativos efectuados entre octubre de y mayo de Se obtuvieron muestras de sangre de los roedores las que fueron procesadas mediante enzimoinmunoensayo con antígenos elaborados a partir de virus Andes. Se observaron importantes diferencias en las especies capturadas en cada una de las regiones. Olivaceus seropositivos y O. Laucha potencialmente portadores de hantavirus Se registraron 6 casos humanos en el período correspondientes a estudios retrospectivos, 21 casos se notificaron en el período y 6 en el período Se analiza la correlación entre ocurrencia de casos humanos, seroprevalencia en roedores y éxito de trampeo. The Andes virus has been identified in the region, both in the rodent Oligoryzomys. Null models for study Rotifers and Crustaceans Zooplankton species richness in Chilean Patagonian lakes. Abstract Aims The Patagonian lakes are characterized by their oligotrophy that is the cause of low species number in their zooplankton assemblage. Results The results revealed that there are direct significant correlations between total species with rotifer species, and chlorophyll concentration with crustacean species number, and an inve Genetic composition of Mytilus species in mussel populations from southern Chile Composición genética de especies de Mytilus en poblaciones de mejillón del sur de Chile. Full Text Available Mussels are one of the most cultivated and commercialized bivalves worldwide and in southern Chile its singles de la valette du var meteo agricole represent an important economic activity. The species identification within the Mytilus genera, by morphological features, is unreliable, so we used a polymorphism RFLP in the gene encoding the polyphenolic adhesive protein as a species-specific genetic marker to describe Mytilus species diversity in southern Chile, and evaluate possible applications in traceability, food quality and safety. Using Me marker most mussels singles de la valette du var meteo agricole M. There was no evidence of M. The presence of the M. In addition, the correspondence between markers that distinguishes northern from southern hemisphere M. In Chile, the genetic composition of Mytilus indicates that geographical origin of mussels and its traceability cannot be established merely from the identification of the species. The use of other markers would be required. La identificación de la especie dentro del género Mytilus, basada en las características morfológicas no es confiable por lo que se utilizó un polimorfismo RFLP en el gen que codifica la proteína adhesiva polifenólica como marcador genético específico de la especie para describir la diversidad de especies Mytilus en el sur de Chile, y evaluar posibles aplicaciones en trazabilidad. Fjords and old-growth forests store large amounts of organic carbon. Yet the role of episodic disturbances, particularly volcanic eruptions, in mobilizing organic carbon in fjord landscapes covered by temperate rainforests remains poorly quantified. While much of the large wood is transported out of the fjord by long-shore drift, the finer fraction from eroded forest soils is likely to be buried in the fjords. We conclude that the organic carbon fluxes boosted by rivers adjusting to high pyroclastic sediment loads may remain elevated for up to a decade and that Patagonian temperate rainforests disturbed by excessive loads of pyroclastic debris singles de la valette du var meteo agricole be episodic short-lived carbon sources. Structural control on arc volcanism: This paper describes the volcanostratigraphy, structure, and tectonic implications of an arc volcanic complex in an oblique subduction setting: The CAC is located in a first-order morphotectonic transitional zone, between the low and narrow Patagonian and the high and broad Central Andes. Magma ascent has occurred along planes perpendicular to the least principal horizontal stress, whereas hydrothermal activity and hot springs also occur along parallel planes. At a regional scale, Quaternary volcanism concentrates along the NE-trending, 90 km long Callaqui-Copahue-Mandolegüe lineament, the longest of the southern volcanic zone, which is here interpreted as an inherited crustal-scale transfer zone singles de la valette du var meteo agricole a Miocene rift basin. At a local scale within the CAC, effusions are controlled by local structures that formed at the intersection of regional fault systems. The Central to Patagonian Andes transition occurs at the Callaqui-Copahue-Mandolegüe lineament, which decouples active deformation from the intra-arc strike-slip Liquiñe-Ofqui fault zone to the south and the backarc Copahue-Antiñir thrust system. Se establecieron nueve sitios en diferentes comunidades del centro y sur del municipio de Calakmul, con la nalidad de describir la estructura singles de la valette du var meteo agricole composición de especies arbóreas en la selva inundable SI, conocida como bajos inundables o vegetación de Akalches. Se censaron 2 individuos, especies y 36 familias. La mayor similitud se presentó entre los sitios al centro del municipio, la diversidad en los sitios Carlos A. Assessment of prey consumption by Magellanic penguins in Patagonian colonies. Full Text Available Penguins are major consumers in the southern oceans although quantification of this has been problematic. One suggestion proposes the use of points of inflection in diving profiles 'wiggles' for this, a method that has been validated for the estimation of prey consumption by Magellanic penguins Spheniscus magellanicus by Simeone and Wilson Numbers of prey caught and CPUT were significantly different between colonies. We modeled consumption from these data and calculate that the world Magellanic penguin population consumes about 2 million tons of prey per year. Possible errors in this calculation are discussed. Despite this, the analysis of wiggles seems a powerful and simple tool to begin to quantify prey consumption by Magellanic penguins, allowing comparison between different breeding sites. Individuals consuming more profitable prey could be optimizing the time spent underwater, thereby optimizing the energy expenditure associated with the dives. Mohorovicic discontinuity depth analysis beneath North Patagonian Massif. The North Patagonian Massif is a km2, sub-rectangular plateau that stands out to m higher in altitude than the surrounding topography. The creation of this plateau took place during the Oligocene through a sudden uplift without noticeable internal deformation. This quite different mechanical response between the massif and the surrounding back arc, the short time in which this process took place and a regional negative Bouguer anomaly in the massif area, raise the question about the isostatic compensation state of the previously mentioned massif. In the present work, a comparison between different results about the depth of the Mohorovicic discontinuity beneath the North Patagonian Massif and a later analysis is made. It has the objective to analyze the crustal thickness in the area to contribute in the determination of the isostatic balance and the better understanding of the Cenozoic evolution of the mentioned area. The comparison is made between four models; two of these were created with seismic information Feng et al. The latter was the result of the adaptation to the work area of a three-dimensional density model made with some additional information, mainly seismic, that constrain the surfaces. The work of restriction and adaptation of this model, the later analysis and comparison with the other three models and the combination of both seismic models to cover the lack of resolution in some areas, is presented here. According the different models, the crustal thickness of the study zone would be between 36 and 45 Km. These results talk us about a crust thicker than normal and that could behave as a rigid and independent block. Moreover, it can be observed that there are noticeable differences between gravimetric and seismic. Respuesta barotrópica de los golfos norpatagónicos argentinos forzados por mareas y vientos Barotropic response of north Patagonian gulfs in Argentina to tidal and wind forcing. La estructura de la circulación inducida por el viento predominante Oeste en los tres golfos consiste en dos giros independientes: La inclusión de efectos disipativos producidos por la marea reduce la intensidad de los giros, pero la estructura espacial de la circulación permanece. Si se incrementa la magnitud del viento se intensifican principalmente los giros anticiclónicos y el transporte de intercambio en la boca del GSM y se profundiza la capa superficial de Ekman. En los experimentos forzados con vientos meridionales la circulación media se divide en dos giros cuyo sentido de circulación depende de la dirección del viento: This work presents the results of a high resolution three dimensional non-linear barotropic hydrodynamic model used to examine the response of three north Patagonian gulfs in Argentina San Matías, SMG; Nuevo, NG; and San José, SJG forced by tides and idealized patterns of surface winds. The structure of the circulation induced by the dominant singles de la valette du var meteo agricole Westerly in all. Preandean geological configuration of the eastern North Patagonian Massif, Argentina. Full Text Available The Preandean geological configuration of the eastern North Patagonian Massif is established through the use of geological and geophysical analysis. Containing strong gravity gradients, the NW—SE belt is coincident with fault zones which were originated during the Gondwanide Orogeny. This event also produced NW—SE overthrusting of the Silurian—Devonian sequences and strike-slip faults that displaced blocks in the same direction. This deformation event belongs to the Gondwanide Orogeny that includes movements related to a counterclockwise rotation of blocks in northern Patagonia. The strong negative anomalies located in the western part of the area stem from the presence of rocks of the Jurassic Cañadón Asfalto basin interbedded in the Marifil Complex. These volcaniclastic sequences show mild deformation of accommodation zones in a pre-Jurassic paleorelief. Pteropoda, Cladocera, and Chaetognatha associations as singles de la valette du var meteo agricole indicators in the southern Brazilian Shelf Asociaciones de Pteropoda, Cladocera y Chaetognatha como indicadores hidrológicos de la plataforma del extremo sur de Brasil. Full Text Available Associations of pteropod, cladoceran, and chaetognath species were analyzed for the southern coast of Brazil in order to present a biological diagnosis of singles de la valette du var meteo agricole oceanographic conditions in winter and summer. The density data from the different species were analyzed using nodal and ordination cluster techniques, linking the species associations with salinity and temperature and, consequently, with the water masses occurring in each period. Sagitta tennis and Pleopsis polyphemoides were found to characterize the coastal water and, when associated with Evadne nordmanni and Pleopsis schmackeri, differentiated between the thermal characteristics of winter and summer, respectively. The Sub-Antarctic Shelf Water was characterized by the association of Sagitta tasmanica and Limacina retroversa in winter. The Tropical Water of the Brazil current presented several different associations, with Penilia avirostris, Sagitta enflata, and Creseis virgula dominating the shelf Tropical Water and Sagitta serratodentata, Limacina trochiformis, and Evadne spinifera characterizing the oceanic Tropical Water. The Sub-tropical Water, typical of upwelling processes, was characterized by the association of the chaetognaths Sagitta decipiens and Krohnitta subtilis, both in winter and summer. The species associations defined in this study agree with others carried out in neighboring areas and in previous sampling periods, characterizing the región as the southern transition zone. Se analizó las asociaciones de especies de Pteropoda, Cladocera y Chaetognatha en la costa sur de Singles de la valette du var meteo agricole, para presentar un diagnóstico biológico de las condiciones oceanógraficas de invierno y verano. Los datos de densidad de las diferentes especies fueron analizados por técnicas de agrupamiento nodal y de ordenación, relacionando las asociaciones con la salinidad, temperatura y, consecuentemente, con las masas de agua presentes en cada período. Se observó que Sagitta tennis, Pleopsis. Full Text Available Biogeographical explanations for the extant and paleo disjoint geographical distribution in the southern hemisphere of five species of nearshore marine benthic invertebrates: Gaimardia trapesina, Ostrea chilensis, Pyura stolonifera taxonomic complex, Aulacomya ater and Concholepas concholepas, showing distinctive reproductive strategies and early life history characteristics are reviewed and analyzed. Through the use of published and new information we contrasted the following hypotheses: Gaimardia trapesina, Ostrea singles de la valette du var meteo agricole, el complejo taxonómico Pyura stolonifera, Aulacomya ater y Concholepas concholepas, con estrategias reproductivas y características de historia de vida distintas. Se discute y pone a prueba, usando información original o publicada, las siguientes hipótesis: Distribución del ictioplancton en la Patagonia austral de Chile: Los principales taxa singles de la valette du var meteo agricole ictioplancton fueron huevos y larvas de sardina fueguina Sprattus fuegensis, pez hacha Maurolicus parvipinnis, Macrouridae y merluza austral Merluccius australis. El desove principal de S. Se observó una nula o baja abundancia de huevos y larvas de peces en las cercanías del glaciar, y la abundancia de huevos de M. Main ichthyoplankton taxa were eggs and larvae of southern sprat Sprattus fuegensis, lightfish Maurolicus parvipinnis, Macrouridae, and southern hake Merluccius australis. Full Text Available El presente texto analiza los cambios en la estructura del sistema de medios de comunicación en cuatro países de América del Sur durante la primera década del siglo XXI: Argentina, Brasil, Chile y Uruguay. La profundización del proceso de concentración, la convergencia de los medios con las telecomunicaciones e Internet, la creciente dependencia financiera del sector, la adquisición extranjera de una cantidad importante de sus bienes a manos de las empresas multinacionales y la crisis de los marcos reglamentarios actuales son los principales marcos para la comprensión de la transformación de los medios de comunicación en el Cono Sur de América Latina. The present text analyzes the changes in the structure of the media system in four South American countries during the first decade of the 21st century: Argentina, Brazil, Chile and Uruguay. The general premise is that the current levels of concentration in media markets have accelerated during the first decade of the 21st century as a consequence of the historical processes which have taken place in these countries, although each has different origins and effects in each of these national cases. Increased concentration, the media convergence with telecommunications and the Internet, the growing financial dependence of the sector, the foreign acquisition of a significant amount of their. Full Text Available Planted and invading non-native plant species can alter fire regimes through changes in fuel loads and in the structure and continuity of fuels, potentially modifying the flammability of native plant communities. Such changes are not easily predicted and deserve system-specific studies. In several regions of the southern hemisphere, exotic pines have been extensively planted in native treeless areas for forestry purposes and have subsequently invaded the native environments. However, studies evaluating alterations in flammability caused by pines in Patagonia are scarce. In the forest-steppe ecotone of northwestern Patagonia, we evaluated fine fuels structure and simulated fire behavior in the native shrubby steppe, pine plantations, pine invasions, and mechanically removed invasions to establish the relative ecological vulnerability of these forestry and invasion scenarios to fire. We found that pine plantations and their subsequent invasion in the Patagonian shrubby steppe produced sharp changes in fine fuel amount and singles de la valette du var meteo agricole vertical and horizontal singles de la valette du var meteo agricole. These changes in fuel properties have the potential to affect fire behavior, increasing fire intensity by almost 30 times. Pruning of basal branches in plantations may substantially reduce fire hazard by lowering the probability of fire crowning, and mechanical removal of invasion seems effective in restoring original fuel structure in the native community. The current expansion of pine plantations and subsequent invasions acting synergistically with climate warming and increased human ignitions warrant a highly vulnerable landscape in the near future for northwestern Patagonia if no management actions are undertaken. Relative efficiency of square-mesh codends in an artisanal fishery in southern Brazil Eficiencia relativa de copos de malla cuadrada en una pesquería artesanal del sur de Brasil. The two square-mesh codends were hauled alternately with a 26 mm diamond-shaped mesh codend control in a twin gear configuration. Although not significant, the mean numbers of total bycatch were reduced by The results indicate significant improvement in size selectivity for some species Xiphopenaeus kroyeri and Stellifer rastrifer. Los dos copos de malla cuadrada fueron arrastrados alternativamente con un copo de malla de 26 mm en forma de diamante control en una configuración de doble arrastre. Los resultados indican que se logra una significativa mejora en la selectividad por tamaño medio de algunas especies Xiphopenaeus kroyeri y Stellifer rastrifer. Caracterización de agregaciones de merluza de cola Macruronus magellanicus en la zona centro- sur de Chile Characterization of Chilean hoki Macruronus magellanicus aggregations off central- southern Chile. Existe evidencia de asociación entre diversos descriptores y estos a su vez con otros factores como talla media, temperatura del agua, latitud y mes, lo que permite describir apropiadamente la forma de las agregaciones y su ubicación en la columna de agua. Algunas relaciones relevantes corresponden a: A monthly characterization of Singles de la valette du var meteo agricole hoki aggregations was done using acoustic records ob-tained with SIMRAD EK60 and ES60 devices aboard three multipurpose vessels that operated in the central- southern fishery unit during ; this considered morphological and bathymetric descriptors. Evidence of associations between various descriptors was found, and these were, in turn, associated with other factors such as mean size, water temperature, latitude, and month, allowing an adequate description of the. Nacellidae limpets of the southern end of South America: Although much is known about the biology and ecology of of some species of Nacellidae, the taxonomy of the group have been partially neglected, particularly in remote areas of the world such as the Chilean fjords. Therefore, this study aims to clarify the nomenclatural status, and establish the morphological characteristics and distribution of the Chilean Nacellidae. Especially, the following three objectives are pursued: The examination of the Nacellidae of the Chilean fiords has resulted in the recognition of one species of Nacella Nacella and seven species of Nacella Patinigera, wherein the principal specific differences are in the shell shape, thickness and color and in radular teeth morphology. The genus Nacella and its subgenus Patinigera are cold-water limpets, and are exclusively inhabitants of Subantarctic and Antarctic waters. They apparently have their centre of distribution in the Magellanic Province of southern South America, corresponding to an area with a high degree of diversification N. Both the slope and the intercept of this relationship decreased from northern to southern Patagonia, which was likely a consequence of reduced DSi inputs from several overlapping hydrological, biological and geological drivers along this gradient. The intensification of a southward DSi deficit may be a forcing factor involved in the reported southward reductions in plankton biomass and a more frequent occurrence of non-diatom blooms in southern PAIS. Variación de la percepción del recurso paisaje en el sur de Chile Variation of the perception of the landscape resource in Southern Chile. Full Text Available El paisaje es el escenario de la actividad humana, por lo que cualquier acción artificial repercute inmediatamente en los factores perceptuales. Hemos seleccionado tres paneles, uno caracterizado como exigentes en la evaluación de paisaje, el segundo como transformadores y un tercero como control. De trabajos sincrónicos se evaluaron paisajes, principalmente con bosque nativo, actividades ganaderas, agrícolas y silvícolas y ambientes lacustres. Se recomiendan criterios para la constitución de un panel que disminuya la subjetividad para evaluar paisaje del sur de ChileThe landscape is the stage of human activity, in which any artificial action rebounds immediately on the perception. Various authors defend the idea of the universality of aesthetic preferences, an idea that is refuted by those who consider cultural and idiosyncratic features as. Macroinvertebrados bentónicos como indicadores de calidad de agua de ríos del sur de Chile Benthic macroinvertebrates as indicators of water quality of southern Chile rivers. Los objetivos de este estudio fueron: Se observó una marcada tendencia a la disminución de riqueza específica desde la cabecera de la cuenca hacia aguas abajo. Las abundancias, biomasas y el IBF, presentaron una tendencia inversa a la riqueza singles de la valette du var meteo agricole. The objectives of this study were: It is derived from an F9 material received from Nordsaat, Germany, under a germplasm exchange agreement signed in by both institutions. Faraón-INIA has a winter growth habit, a short stem semi-dwarf, with a mean height of cm. The spike is long, compact, decumbent, white, and awned. The grain is soft, yellow, with grain weight of 36 g, and a mean of hectoliter weight of 76 kg hL It is resistant to stripe rust Puccinia striiformis West. Its mean yield for four seasons in three different locations: Bromatological analysis of the grain showed good protein content Este cultivar deriva de un material F9 recibido de la empresa Nordsaat, Singles de la valette du var meteo agricole, bajo un convenio formal firmado en el entre ambas instituciones. La espiga es larga, compacta, decumbente, blanca y barbada. El grano es blando, amarillo, con un peso de granos de 36 g y un promedio de 76 kg hL-1 de peso del hectolitro. Es resistente a roya. Ciclo gonadal del chorito Mytilus chilensis Bivalvia: Mytilidae en dos localidades del sur de Chile Gonadal cycle of singles de la valette du var meteo agricole mussel Mytilus chilensis Bivalvia: Mytilidae at two localities in southern of Chile. Full Text Available Se analizó de forma cualitativa y cuantitativa el ciclo gonadal del bivalvo Mytilus chilensis en las localidades de Chaihuín y bahía Yal, sur de Chile, singles de la valette du var meteo agricole octubre y junio Sin embargo, en los ejemplares de bahía Yal se registraron cuatro desoves, principalmente de marzo a junio otoño, cuando la temperatura del agua disminuyó. Se sugiere la revisión del periodo de veda de Mytilus chilensis 1 noviembre a 31 diciembre, ya que la mayor parte de los individuos de las poblaciones estudiadas, maduran principalmente en octubre. Los resultados obtenidos mostraron diferencias en los ciclos reproductivos de Mytilus chilensis entre las localidades analizadas, las que se podrían atribuir a diferencias ambientales e. A qualitative and quantitative analysis was carried out of the gonadal cycle of the bivalve Mytilus chilensis from Chaihuín and Yal bay, southern Chile, between October and June Four gametogenic stages were determined using histological analysis of the gonads, and quantitative estimates were made of the Gametic Volume. Diversidad y distribución de acridios Orthoptera: Acridoidea en pastizales del sur de la región pampeana, Argentina Diversity and distribution of grasshoppers Orthoptera: Acridoidea in grasslands of the Southern Pampas region, Argentina. Full Text Available Los acridios son componentes nativos de los pastizales, dichos sistemas han sido modificados debido a la intensificación de las actividades agrícola-ganaderas y por lo tanto se considera importante estudiar las comunidades de acridios asociadas. Se recolectaron 22 especies. La mayor cantidad de especies se observó en los pastizales nativos La diversidad en los pastizales alterados 1. As in other grasslands of the world, grasshoppers are among the most important native herbivores. Their economic importance has been recognized in Argentina since the mid to late nineteenth century, since outbreaks of different singles de la valette du var meteo agricole have become recurrent phenomena. Therefore, the main objective of this work was to study their diversity and distribution in grasslands of the Southern Pampas region Laprida county, Buenos Aires province, as one of the most affected areas. The study was conducted during five seasons Sampling sites were represented by the most common plant communities in this area, classified in four categories: The samplings were conducted from mid-spring to early autumn, with five or six samples per season. We estimated the following population descriptors: In order to evaluate the similitude of the grasshopper communities present in the different plant communities, we used qualitative and quantitative coefficients of similitude. A total of Propiedades fisicoquímicas en suelos predominantes del noroeste de Santa Fe y sur de Santiago del Estero, Argentina Physicochemical properties of predominant soils in Northwestern Santa Fe and Southern Santiago del Espero provinces, Argentina. Full Text Available Un total de muestras de suelos fueron recolectadas en la zona noroeste de Santa Fe y sur de Santiago del Estero durante el período In recent years, there has been an increasing interest in evaluating soil quality and health. The resource soil is a fundamental component of the biosphere, participating in the production of food, fibers and energy and consequently impacting on the environmental quality. The indiscriminate expansion of agriculture added to the inadequate management in many areas has led to the deterioration of soil structure and to the consequent reduction in organic matter levels, affecting the soil chemical and physical fertility. A total of soil samples were collected in the northwestern area of Santa Fe and in the southern part of Santiago del Estero provinces during the period. Physicochemical analyses were carried out pH, Total Nitrogen, Nitrate- Nitrogen, Nitrate, Phosphorus, Potassium, Sulfur and Organic Matter with the objective of categorizing the soil samples according to fertility and aptitude for agricultural-cattle use. Full Text Available A mathematical model was developed to analyze beef production systems in Southern Chile. The study considered the identification of the main components of systems under different beef steer management strategies, using pasture with or without supplementation and back grounding cattle on pasture followed by a winter period of confined feeding with pasture silage and concentrates. In order to analyze the interaction between the stocking rate SR and supplementation, three SR of 2, 2. Significant differences were found in terms of final weights, which decreased with increasing SR regardless of the supplementation level, although silage supplementation tended to reduce differences between SR. A second set of simulation runs was carried out to simulate on-farm finishing of the steers through a final phase of confined feeding based on a ration of silage and concentrates. Final singles de la valette du var meteo agricole differed between SR and systems and results showed that the optimum corresponded to 2. It is concluded that a stocking rate of 2. El estudio consideró la identificación de los componentes en diferentes estrategias usadas en novillos de carne, usando praderas con y sin suplementación y la singles de la valette du var meteo agricole seguida por una engorda a corral en invierno con ensilaje de. Causes of drug-related problems in the emergency room of a hospital in southern Brazil Problemas relacionados con medicamentos en el servicio de urgencias de un hospital en el sur de Brasil. Full Text Available Objective: To assess the frequency and types of drug-related problems DRPs in patients seeking emergency care in a teaching hospital in southern Brazil and to identify the possible causes and drugs involved in these problems. A cross-sectional study was performed, using a structured questionnaire for data collection. Multivariate logistic regression was used to control for possible confounding factors and to establish an independent association between the presence of DRPs and the amount of medication, patient's age and their educational level. A total of patients were interviewed. The frequency of DRPs was Quantitative ineffectiveness was observed in Factors independently influencing the development of DRPs were educational level and the number of drugs being taken. Our data suggest that one-third of the patients attending the emergency room of our hospital had a drug-related problem, highlighting the importance of considering drugs as a possible cause of health problems and the need for their more rational use. La investigación siguió el modelo de estudio transversal, con una encuesta estructurada para la recogida de los datos. Se entrevistaron pacientes y la frecuencia de problemas relacionados con. Seafood substitutions obscure patterns of mercury contamination in Patagonian toothfish Dissostichus eleginoides or "Chilean sea bass". Full Text Available Seafood mislabeling distorts the true abundance of fish in the sea, defrauds consumers, and can also cause unwanted exposure to harmful pollutants. By combining genetic data with analyses of total mercury content, we have investigated how species substitutions and fishery-stock substitutions obscure mercury contamination in Patagonian toothfish Dissostichus eleginoides, also known as "Chilean sea bass". Patagonian toothfish show wide variation in mercury concentrations such that consumers may be exposed to either acceptable or unacceptable levels of mercury depending on the geographic origins of the fish and the allowable limits of different countries. Consistent with the documented geography of mercury contamination, our analysis showed that, on average, retail fish labeled as MSC-certified Patagonian toothfish had only half the mercury of uncertified fish. However, consideration of genetic data that were informative about seafood substitutions revealed a complex singles de la valette du var meteo agricole of contamination hidden from consumers: Among MSC-certified fish that were actually D. Overall, our analysis of mercury was consistent with inferences from the genetic data about the geographic origins of the fish, demonstrated the potential negative impact of. Tides and lake-level variations in the great Patagonian lakes: Observations, modelling and geophysical implications. The maximum amplitude, corresponding to the semi-diurnal moon tide M2 in Lago Argentino, amounts to 3 mm. For the four lakes under investigation the theoretical amplitudes and phases of seven constituents Q1, O1, P1, K1, N2, M2 and S2 are modelled accounting for the contributions of both the solid earth's body tides and the ocean tidal loading Marderwald Both contributions involve a deformation of the earth surface and of the equipotential surfaces of the gravity field. For the load tide computation the global ocean tide model EOT11a Savcenko and Bosch, and the Gutenberg-Bullen A earth model Farrell, was applied and the conservation of water volume is taken into account. The comparison of the tidal signal extracted from the lake-level observations in Lagos Argentino and Viedma with the lake tide models indicates a phase shift which is most likely explained by an 1 hour phase lag of the employed global ocean tide model in the region of the highly fragmented Pacific coast. Deformation of the Earth by Surface Loads. Bedrock response to Llanquihue Holocene and present-day glaciation in southernmost South America. WolfModels of active glacial isostasy roofing warm subduction: Observed crustal singles de la valette du var meteo agricole near the Southern Patagonian Icefield constrains improved viscoelastic Earth models. Modelado de las mareas. Patterns of larval distribution and settlement of Concholepas concholepas Bruguiere, Gastropoda, Muricidae in fjords and channels of southern Chile Patrones de distribución de larvas y asentamiento de Concholepas concholepas Bruguiere, Gastropoda, Muricidae en fiordos y canales del sur de Chile. Almost all studies of this gastropod have been carried out in open coastal systems, rather than the fjords and channels of southern Chile, despite the fact that this area represents ca. Although there is a large volume of background literature on C. This study is the first attempt to determine the spatial and temporal abundance and size patterns of C. Weekly plankton samples were obtained at the surface and at 8 m depth in four locations in southern Chile in combination with temperature and salinity records in each location. Settlement was quantified using artificial substrates in all locations. We have observed that C. Thus, larvae appear to have a long planktonic development that can last between 6 and 12 months. Differences in local hydrology could affect larval development of C. Analizar la asociación entre problemas de salud mental y uso de cigarro en adolescentes. Salud mental fue evaluada de acuerdo con el escore total del cuestionario Strengths and Difficulties Questionnaire y escore mayor o igual a 20 puntos fue considerado como positivo. Los datos fueron analizados por regresión de Poisson, con ajuste robusto para varianza. Biomass and fishing potential yield of demersal resources from the outer shelf and upper slope of southern Brazil Biomasa y rendimiento potencial pesquero de recursos demersales de la plataforma externa y talud superior del sur de Brasil. Full Text Available The relative abundance and fishing potential of the commercially valuable fishes and cephalopods with marketable size was assessed using two seasonal bottom trawl surveys performed in and on the outer shelf and upper slope m depth off the coast of southern Brazil. Of the fish and cephalopod species caught during the surveys, only 27 species and genera were considered to be of commercial interest. Commercial-sized individuals of these species made up The most abundant species were the Argentine short-fin squid Illex argentinas, a species with highly variable recruitment, followed by the Argentine hake Merluccius hubbsi, the gulf-hake Urophycis mystacea, and the monkfish Lophius gastrophysus. The latter three were intensively fished prior to the surveys, as well as the beardfish Polymixia lowei and silvery John dory Zenopsis conchifera, both relatively abundant but with a very low market value. When considering only Merluccius hubbsi, Urophycis mystacea, and Lophius gastrophysus, the potential yield decreased to 6, ton. The surveys showed that the fishery potential of the outer shelf and upper slope was substantially lower than that of the inner shelf. Therefore, this environment should singles de la valette du var meteo agricole carefully monitored to avoid overfishing and fast depletion. Se evaluó la abundancia relativa y el potencial pesquero de peces y cefalópodos de especies y tamaños de valor comercial en dos muéstreos estacionales con redes de arrastre de fondo realizados en los a. River crossings by Ateles geoffroyi and Alouatta pigra in southern Mexico: A preliminary report Habilidad para cruzar ríos en Ateles geoffroyi y Alouatta pigra en el sur de México: We collected data on river crossings by both monkey species from hours of surveys along the river and 58 questionnaires completed by knowledgeable local informants. We observed on two separate occasions spider monkeys crossing the river from the disturbed area to the reserve, but howler monkeys were never observed crossing. Interviews suggest, however, that howler monkeys cross the river more frequently than spider monkeys 13 versus 8 reports, respectively. We found that bank-to-bank river width was singles de la valette du var meteo agricole at river crossing locations in each study singles de la valette du var meteo agricole than along the river in general. Furthermore, we found no relationship between river crossings and some human pressures such as deforestation and population size in the region. Whatever the underlying pressures that drive river-crossing events in these two primate species in this region, they appear to be sufficiently strong to stimulate this behavior to occur from time to time. Fatores de risco comportamentais acumulados para doenças cardiovasculares no sul do Brasil Factores de riesgo conductuales acumulados en enfermedades cardiovasculares en el sur de Brasil Accumulated behavioral risk factors for cardiovascular diseases in Southern Brazil. Los factores de riesgo conductuales investigados fueron: El desenlace del estudio fue el escore de aglomeración de factores de riesgo conductuales, variando de cero a tres: Se realizó regresión logística multinomial para evaluar el efecto ajustado de las características individuales sobre la acumulación de factores de riesgo conductuales, teniendo como categoría de referencia individuos sin alguno de los factores. La acumulación de factores de riesgo conductuales en enfermedades cardiovasculares es elevada en la población estudiada. To estimate the prevalence of, and identify factors associated with, accumulated risky behavior relating to cardiovascular diseases among adults. This was a population-based cross-sectional study on a representative sample of adults of both sexes in Pelotas, Southern Brazil, in Porosity, shear strength, water content, penetrability and grain size of the substrate were measured in each sampling level. The meiofauna was primarily represented by Nematoda and Copepoda Harpacticoidea. The highest average density and biomass per unit of area were found at the reflective beach of Gaviotas 6, ind 10 cm-2 and 2. Total abundance and biomass of the meiofauna per linear meter of beach i. Therefore, these last results show a trend of increasing intertidal meiofaunal abundances and biomass towards the dissipative stage of the beach gradient analyzed. The highest meiofaunal densities and biomass occurred at the upper and mid shore levels of each beach. Lower across-shore variability in density and biomass were found at the dissipative beach. Results of a Monte Carlo permutation test showed that water content, penetrability and grain size were the best predictor variables of meiofaunal density. Body sizes of nematodes, copepods, turbellarians, halacarids and ostracods were correlated with sediment characteristics. Southern Chile, trout and salmon country: Salmon, introduced for aquaculture, such as O. We tested the effect of river geographic origin Andes mountains, central valley, or Coastal range on fish abundance and found that rainbow trout was more restricted to the Andean streams with higher water discharge, while brown trout was widely distributed and did not relate to any of several catchment attributes measured. The abundance of native fish was greater in lakes than in streams and the highest native fish biodiversity occurred in streams of the central valley. The most common native species were Galaxias maculatus, G. Applications of wireless sensor networks for monitoring oil and gas onshore fields; Aplicacoes de redes de sensores sem fio em monitoramento de pocos. var el optimismo hacia el futuro. Más aún .. El empresario agrícola Juan Sutil retomó el control total de la viña y, luego de una profunda weather that harnesses the spicy tones of its wines. however .. ría enológica de Patrick Valette –su compañero de siempre debut of this single-wine company that each year takes. Streams with higher conductivity, larger pool areas, more fine sediments, and low brown trout densities were more suitable for native fish. Thus, catchments with higher anthropogenic disturbance appeared as refuges for native species. Given the descriptive nature of our study we can only presume the negative impacts of trout and salmon on native fish; an effect which should be superimposed on biogeographical conditioning of present distribution. Yet based on the present abundance and distribution patterns of salmonids and native fish, negative effects are very likely. Conservation of native fish biodiversity in central valley streams, far from protected areas or national parks and fully exposed to human. Ceratopogonidae, revealed considerable variation in wing patterns of both sexes. One pattern includes several distinct light spot areas, whereas another pattern e. The cause s of the differential lack of dark macrotrichia in certain areas of the wing membrane in specimens of some series could not be attributed either to their age, sex, or method of preservation. Se compararon la presión arterial, peso, altura y circunferencia abdominal. Posterior al ajuste, niveles de presión elevados y referir chillido en el pecho fueron fuertemente asociados con la autoevaluación negativa entre los hombres. Niveles de presión elevados, diabetes, chillido en el pecho y síntomas de falta de aire permanecieron asociados al resultado posterior al ajuste en las mujeres. To analyze factors associated with singles de la valette du var meteo agricole health in adults. A population-based, cross-sectional study was performed with a sample of 2, adults aged between 20 and 59 years, in the city of Lages, Southern Brazil, in. Numerical modelling of the M2 tide on the northern Patagonian Shelf. The mean width of the Patagonian Shelf is comparable with a quarter wavelength of the semidiurnal tide, giving the conditions for standing wave resonance at that frequency WEBB,Deep-Sea Research, 23, The region is well recognized by its large tidal elevations and by the speed of the tidal wave changing phase very rapidly. Some of the results obtained from the modelling exercise include the mapping of the M2 tidal constants, the Simpson-Hunter stratification parameter, the mean sea surface elevation, and the distribution of tidal energy dissipation by bottom friction. These results agree qualitatively with the ship data available and with satellite infrared imagery. Synergistic roles of climate warming and human occupation in Patagonian megafaunal extinctions during the Last Deglaciation. The causes of Late Pleistocene megafaunal extinctions 60, to 11, years ago, hereafter 60 to Unfortunately, limited data sets in South America have so far precluded detailed comparison. We analyze genetic and radiocarbon data from 89 and 71 Patagonian megafaunal bones, respectively, more than doubling the high-quality Pleistocene megafaunal radiocarbon data sets from the region. The latest status of the investigations are briefly reported. En este contexto, comparando España con otros países, parece que los alumnos aprenden poco. Las enfermedades poco comunes, incluidas las de origen genético, son aquellas enfermedades que tienen una prevalencia baja, menor de 5 casos por cada Estas enfermedades tienen ciertas características comunes. Son, en su mayor parte, degenerativas y constituyen una prioridad de los sistemas de salud. Breve estudio singles de la valette du var meteo agricole de los modernos medios de transporte terrestre. Full Text Available Interurban Planning Section General Division of Highways and Subsidiary Roads In this study a series of data regarding the modern means of transport, available at present, are being compiled and compared in order to facilitate the choice of the most suitable one for each case. In order to understand better the various using conditions we have listed the most prominent known characteristics of each of them in alphabetical order in the definitions. With some of these characteristics as a point of departure, such as speed and capacity we have obtained criteria as to the application field of every means of transport. A partir de algunas de estas características de explotación, como velocidad y capacidad, se han obtenido criterios sobre el campo de aplicación de cada medio de transporte. Procesos de regulación metacognitiva en el aprendizaje de ecosistemas terrestres. En los procesos de regulación metacognitiva en el aprendizaje de ecosistemas terrestres es importante contar con herramientas que permitan identificar las habilidades metacognitivas que poseen los estudiantes, ya que para los docentes contar con este resultado permite conocer hacia donde se deben enfocar las estrategias de aprendizaje. Aiming to characterize the radioactive minerals of Campo Agostinho, Pocos de Caldas - Brazil, the survey of all natural radiactive elements and their geochemical behaviors, decays and radioactive equilibrium was done. Several models of radioactive instability of the minerals or the radioactive samples were proposed to characterize the geochemistry and the mineralization of radioactive elements. The complete isotopic analysis of the elements was done by high resolution gamma spectrometry, using a Ge Li detector, at the temperature of liquid nitrogen, coupled to a multichannel analyser. Fluorite, zircons, pirite, molibinite, rutile, anatase, niobophyllite, and in small ratio bellow 0. La fotogrametría terrestre en España El ingeniero geógrafo José María Torroja y Miret fue uno de los principales introductores, difusores y organizadores de los trabajos fotogramétricos desde principios de siglo hasta los años treinta. A principios de la década de la fotogrametría aérea empezaba a desplazar a la terrestre singles de la valette du var meteo agricole, a la vez que impulsaba una notable automatización en los trabajos de gabinete. Sin embargo, la peculiar situación española en la posguerra hizo que el recurso a la fotogrametría terrestre perdurase hasta el año Full Text Available La isla Malpelo se encuentra en el Pacífico colombiano, a unos km de la costa continental. Con el fin de realizar un inventario singles de la valette du var meteo agricole la flora terrestre de Malpelo, se realizaron tres salidas de campo durante elen las que se recolectaron plantas vasculares, musgos y líquenes, y se tomaron datos sobre su distribución en la Isla. La gran cantidad de registros nuevos para Colombia se explica por la poca cantidad de trabajos en líquenes saxícolas en el país, sobre todo en zonas costeras e insulares. Solo se registraron dos especies de plantas vasculares, una gramínea, Paspalum sp. También se recolectó una especie de musgo, Octoblepharum albidum. La escasez de plantas vasculares probablemente se deba a la combinación de condiciones de los suelos y a la herbivoría por cangrejos terrestres. El presente estudio es el primero en darle relevancia a la flora terrestre de Malpelo y constituye un punto de referencia y comparación para estudios semejantes en otras islas del Pacífico Oriental Tropical. Los moluscos terrestres Mollusca: Gastropoda de Costa Rica: Full Text Available Los moluscos terrestres son un grupo muy poco estudiado a nivel mundial. Modelo gravimétrico del espesor de la corteza terrestre en Colombia. They were transformed to bidimensional series of Fourier, that combined with mathematics expressions of the gravitational potential, both, they made possible to find the crustal thickness starting from observable values across the earth's surface gravity and topography. The results of several points were converted to surface through Minime Curvature algorithm. ![]() In order to obtain reliability of the results, seismic control was applied from another works. Los resultados han sido dispuestos en una malla de puntos que se interpolan a una superficie utilizando el algoritmo de mínima curvatura. Para la estimación de la confiabilidad de los resultados se ha realizado una confrontación con las deducciones geológicas obtenidas de algunas interpretaciones sismicas realizadas en el pais. Perspectiva ambiental de las vías de comunicación y transporte terrestres. Influencia atmosférica en la rotación terrestre. Estudios previos han establecido que las variaciones en la rotación terrestre con períodos iguales o menores que dos años obedecen a cambios en la circulación atmosférica global. Para estos períodos puede comprobarse que existe un gran acuerdo entre las fluctuaciones de la longitud del día LOD y los cambios del momento angular atmosférico terrestre AAM. Con este propósito utilizamos los siguientes juegos de datos: Manual de métodos de campo para el monitoreo de aves terrestres. The main Rn sources are the soils, building materials and potable waters. There is an especial interest in spas waters with high natural radioactivity. It's considered that the use of these waters as drinking waters is a significant radiation exposure factor, and it is worthwhile to assess the consequent dose. Such estimation has been made for the Pocos de Caldas Plateau, which is a region of high natural radioactivity, from volcanic origin, containing several spas Aguas da Prata, Caldas, Pocos de Caldas and Andradas. The Rn content was determined in 23 spring waters in Pocos de Caldas and neighboring cities. In water sampling, modified Marinelli flasks were used. The determinations were effected with a high resolution gamma ray spectrometer. A geopolítica do poder terrestre revisitada The geopolitics of land power revisited. Full Text Available O pensamento geopolítico do geógrafo inglês Halford Mackind-er é revisitado com três objetivos: The goepolitical ideas of the English geographer Halford J. Mackinder are revisited in order to examine the foundations and contemporary relevance, or obsolescence, of his theory of the land power. Independentemente do tipo de controle utilizado, um passo interativo é ainda exigido para determinar as coordenadas imagem de pontos de apoio. As ortoimagens podem ser utilizadas como cenas de controle em algoritmos de correspondência para orientar imagens aéreas ou orbitais. Um modelo multiescala é gerado e orientado usando pontos de enlace e os cantos do alvo como pontos de apoio. Characterization of potassic materials of Pocos de Caldas alkaline massif, Southeastern Brazil; Caracterizacao de materiais potassicos do macico alcalino de Pocos de Caldas MG. Potassium, which has featured in Brazil's agricultural sector and in the world's in the application of fertilizers, is present in magmatic rocks, such as nepheline syenite and phonolite, found in the Alkaline Massif of Pocos de Caldas AMPC. The rare earth elements REEin turn, also occur in this region and have important uses in various industrial fields. The aim of this study was to investigate the potential of potassic rocks of AMPC in the fertilizer and rare earths industry. Five samples were collected and characterized. It was observed that there was no preferential concentration by granulometric range of potassium oxide, alumina, silica and iron oxide. Feldspathic mass, potash feldspar, and muscovite were found in all samples. The samples show REE with amounts greater than those found in the earth's crust, except for lutetium and scandium and possessed average content of potassium oxide from 8. Predictive models based on identified loci also have modest success in risk assessment and therefore are of limited practical use. Many methods have been developed to overcome these limitations by incorporating singles de la valette du var meteo agricole biological knowledge. However, most of the information utilized by these methods is at the level of genes, limiting analyses to variants that are in or proximate to coding regions. We propose a new method that integrates protein protein interaction PPI as well as expression quantitative trait loci eQTL data to identify sets of functionally related loci that are collectively associated with a trait of interest. We call such sets of loci "population covering locus sets" PoCos. The contributions of the proposed approach are three-fold: Our results show that the proposed method significantly outperforms individual variant based risk assessment models as well as the state-of-the-art polygenic score. We also assess the biological relevance of PoCos singles de la valette du var meteo agricole three diseases that have similar biological mechanisms. Escolha de modo no acesso terrestre a aeroportos considerando a confiabilidade do tempo de viagem. Full Text Available Resumo: Os indivíduos ordenavam 4 alternativas: Modelos de escolha discreta foram estimados, considerando os efeitos de painel, aninhamento e de inércia. A stated preference survey was conducted with individuals traveling to international destinations. Each respondent ranked 4 alternatives: Attributes describing modes were travel cost, average travel time and travel time reliability, expressed as a safety margin — the time period allocated by the individual for arriving at the airport at the preferred time. Discrete mode choice models were estimated, considering panel, nesting and inertia effects. Results indicated that business and higher income. The use of filter membranes is widely disseminated in industry and in sanitation companies to the high quality process and use of membrane systems to treat and reuse wastewater. The techniques used for the membranes material characterization were scanning electron microscopy SEMthe method of Archimedes. The efficiency of the membranes was examined by the spectrophotometry methods, suspended solids and the oil concentration of the produced water samples previously treated by the oil industry. Banco de semillas germinable en la franja terrestre de dos humedales urbanos. En cada humedal se definieron 15 parcelas de 4 m2 donde se recolectaron muestras de suelo a diferentes profundidades cm, cm y cm, a partir de las cuales se realizó el conteo e identificación de las semillas germinadas durante 4 meses. Se registraron en total semillas germinadas de 22 especies y 14 familias. La densidad total fue de semillas. La recuperación de estos humedales a través del banco de semillas es limitado, por lo que se requiere combinar estrategias que superen la barrera que impone el pastizal dominado por Pennisetum clandestinum, así como el enriquecimiento con semillas e individuos de especies propias del ecosistema. El descubrimiento de la ruta terrestre entre Buenos Aires y el Río Negro. Full Text Available Not available. A raíz de los grandes malones de I, Vértiz activó los trabajos destinados a la defensa del territorio, al mismo tiempo que procuró establecer relaciones pacificas con las parcialidades indígenas que merodeaban la frontera bonaerense. La expedición de Zizur tuvo como objeto negociar la paz con el cacique Lorenzo y, a su vez. Como resultado de esta empresa tuvo lugar un prolijo reconocimiento de la ruta terrestre entre la capital del Virreinato y el Río Negro, la que pudo ser reconstruida mediante el estudio crítico del diario de la expedición, realizado con la información que aporta la documentación édita e inédita, con el auxilio de la cartografía histórica y las mensura de los terrenos por los que tramitara la misma, practicadas a partir del siglo pasado. Como síntesis final, se ha volcado el camino seguido por Zizur en la cartografía actual. El arriero y el transporte terrestre en el Cono Sur Mendoza, Full Text Available This paper explores the muleteer as an economic actor in terrestrial transportation in South Cone, specially in the route across the Andes in order to connect Atlantic and Pacific markets. The muleteer promoted an intensive activity in terms of transportation, trade and wine industry. As a result, he leaded the rise of a regional proto-bourgeoisie. A partir de los manuales de Cargo y Data de la Aduana de Mendoza, se han procesado El arriero impulsó una intensa actividad en el transporte, el comercio y en la industria vitivinícola; como resultado, este actor promovió el surgimiento de una protoburguesía regional. Full Text Available http: In the Poco de Fora region level rocks of light metamorphism, from Caraiba group, corresponding to: Geological, petrographic, geochemistry and geochronological studies were done. The sienitic-intrusion, from the upper crust, occur during the Archean-beginning of the Proterozoic. All the region was re-mobilized, and the sienitic was metamorphosed during Transamazonic Orogeny 2. Complementary geochemical analyses were alone on selected 26 samples. It was observed that there are many radiation focii in that place and they are oriented in the E-W direction. The geochemical analyses show that Uranium has participated also in the inicial mineralization of radioactive elements. The contribution of U series daugher elements is relatively strong although Uranium was 'washed' by leaching. Three non-destrutive methods for determination of uranium from Morro do Agostinho's ore, Pocos de Caldas, Minas Gerais are presented. Comparative data between chemical analysis volumetric method and cited non-destructive methods are shown. Gamma spectrometry, x-rays fluorescense and delayed neutrons counting are the methods discussed. Uranium's and molibdenium's behavior related to anionic sulphuric resin system is also discussed. Comparative studies concerning retention of uranium and molibdenium in strong and weak anionic resins as well as selective elution using appropriate solvents are shown [pt. Niveles de verbalización y resolución colaborativa de problemas poco estructurados. Singles de la valette du var meteo agricole Text Available Se describieron las verbalizaciones de seis estudian - tes universitarios que resolvieron colaborativamen - te un problema poco estructurado. Partiendo de que aportaban información sobre la regulación metacog - nitiva y la solución de problemas, las verbalizacio - nes fueron categorizadas en niveles. Se utilizaron matrices espacio estado para interpretar los niveles de verbalización y los procesos de resolución de problemas poco estructurados. Se evidenció el predo - minio de verbalizaciones no reguladas, la ausencia de verbalizaciones relacionadas a la elaboración de justificaciones y la superficialidad del monitoreo y la evaluación. La evidencia apoya la idea de que la interacción entre pares no mejora por sí misma la solución de problemas. Los resultados invitan al diseño de situaciones de resolución de problemas que efectivamente promuevan la regulación meta - cognitiva entre pares. Las arañas en agroecosistemas: Full Text Available Las arañas son predadores generalistas en ecosistemas terrestresampliamente utilizadas en estudios de biodiversidad. Las arañas fueron capturadas con trampas de caída, trampas de tronco, segado, batido de follaje y colecta manual nocturna. Un total de 3. La mayor abundancia y riqueza de especies se observó en el bosque ribereño. Relevamiento magnetométrico terrestre de rellenos sanitarios: La presente contribución contiene resultados de la aplicación de relevamiento magnetomètrico terrestre en el estudio de rellenos sanitarios. Ésta fue seleccionada pues se tenía conocimiento del cese de operaciones y existía interés de autoridades locales en verificar la ausencia de anomalías indicadoras de potenciales residuos peligrosos para e In sector C, Pocos de Caldas in the state of Minas Gerais, geostatistical techniques have been used to evaluate the tonnage of U 3 O 8 and associated minerals and to delimit ore from sterile areas. Two-and three dimensional evalutions were made following the existing geological models. Initially, the evaluation was based on chemical analysis using the more classical geostatistical technique of kriging. This was followed by a second evaluation using the more recent technique of co-kriging which permited the incorporation of radiometric information in the calculations. The correlation between ore grade and radiometric was studied using the method of cross-covariance. Following restrictions imposed by mining considerations, a probabilistic selection was made singles de la valette du var meteo agricole blocks of appropriate dimensions so as to evaluate the grade tonnage curve for each panel. NORM is the acronym used to refer to naturally occurring radioactive materials. Besides being objects of study and monitoring such materials can be used as raw material or as by-products or waste of industrial activities. Geography Now! BulgariaOil and gas, mining and water treatment are examples of facilities that can handle NORM. In such cases, their concentration at significant levels from the perspective of environmental and occupational radiation protection may occur. This study aims to evaluate the presence of the natural radioactive U and Th series in the treatment of city water elements Pocos de Caldas - MG water, materials and waste. The study can serve as an indication of the necessity of a more detailed review in the locally and in the country on this radiological issue. Thorium isotopic analyses were performed on well spoils of the main ore body at Morro do Ferro, Pocos de Caldas MGon groundwaters from several boreholes in the area and surface waters from a stream that originates at the base of the hill. For extraction of thorium a long chemical process was applied to samples; activities of Th and Th isotopes 4n series were determined by alpha spectrometry method. Characterization of potassic materials of Pocos de Caldas alkaline massif, Southeastern Brazil. Ra collective dosimetry for surface waters in the uranium mining region of Pocos de Caldas. Graphs of the collective dose equivalent for the whole body, bone, gastro-intestinal tract lower large intestinekidneys, and liver, via the pathways of drinking water and ingestion of food grown in irrigated fields are presented as a function of the Ra concentrations in the surface waters of the Pocos de Caldas region. The collective dose equivalent calculated from the Ra concentrations measured in the baseline studies are compared with those collective dose equivalent estimated from the projected higher Ra concentrations in the river waters. The Ra concentrations in river waters of the region are expected to be enhanced due to Ra releases from uranium mining and milling operations. The dose equivalent commitment for the exposed population for the referred pathways is also estimated for the contribution of the mine during its predicted time of operation. The assumptions for the dose calculations are presented and the results obtained are discussed. Modelling of redox front and uranium movement in a uranium mine at Pocos de Caldas, Brazil. A study of the migration of uranium at the Pocos de Caldas uranium mine in Brazil under the influence of the infiltration of oxidising groundwaters has been performed. The work presented in this paper extends a previous study. Results give some encouraging agreements with field data, generally increasing confidence in the use of such modelling techniques in problems associated with the migration of radionuclides away from a nuclear waste repository. For particular aspects of the problem where good agreement with field data was not obtained, a number of reasons have been suggested. This study also highlights the importance of accurate thermodynamic data and choice of solubility-limiting mineral phases for modelling such systems. Distribution of uranium, thorium and potassium in the alkaline rocks of Pocos de Caldas massif. The Pocos de Caldas massif, with area about Km 2represents the greatest complex of alkaline rocks existent in the American continent. Although values of U and Th are well Known in the mineralized areas, few has been registered with respect to the distribution of those elements outside the ore deposits. The rocks of the massif, in general, present high contents of U and Th when confronted with the surrouding country rocks. The distribution of the U and Th appoint a relevant additional data in the discussion on the hypothesis of nepheline syenites bodies formation in Pocos de Caldas by crystal fractionation processes. In this work are provided results of the U, Th and K distribution in the main petrographic facies occurring in the several studies places of the massif, yielded by gamma-ray spectrometric analysis of the samples. Uranium and Th comparative data, attained by delayed neutron counting activation analysis also are given. The results obtained for the fluorimetric analysis show loss of U leaching is greater in the fine-grained rocks phonolites than coarse-grained ones lujavrites, Khibinites. The autoradiographic studies reveal that radioactive elements singles de la valette du var meteo agricole found concentrated in mineral phases. A new assessment of the radiogenic heat production it is also available. The blue land planarian Caenoplana coerulea, an invader in Argentina La planaria terrestre azul Caenoplana coerulea, un invasor en Argentina. The specimens that we found have the characteristic of the species found in others regions; that is, a bluish dorsal surface with a yellow mid-dorsal stripe and eyes forming a single row around the anterior tip, clustered laterally. This is the first record of this species from the Neotropical Region, and together with Bipalium kewense are the only 2 species of exotic terrestrial planarians so far recorded in Argentina. La planaria terrestre azul Caenoplana coerulea se registra para el centro este de Argentina provincia de Buenos Aires, en ambientes antropizados. Los ejemplares encontrados presentan las características de la especie registrada en otras regiones, con una superficie dorsal azulada y una hilera medio dorsal amarilla, y ojos formando una hilera alrededor del extremo anterior, agrupados lateralmente. Soltar o Globo Terrestre. En la segunda parte, describimos en detalle algunas actividades que facilitan su empleo en el aula y que hemos venido desarrollando en talleres de formación docente en nuestro grupo de investigación. Com o conhecimento das sombras, é possível estimar a latitude de uma localidade e inferir a hora solar local em qualquer lugar do hemisfério iluminado do planeta. Cet article interroge les liens entre la mécanisation des moyens de transport terrestre et la disparition du cheval comme outil de locomotion. Trois domaines différents sont successivement analysés: Centre d' Etudes Nucleaires. Three orthogonal magnetic fields are generated by three square coils sets. Le champ magnetique terrestre est compense par superposition de trois champs orthogonaux, chacun cree par un ensemble de cadres carres. Chacune de ces composantes est mesuree par un magnetometre. Cet ensemble permet de travailler en regulation de courant ou en regulation de champ. En regulation de courant, l'operation est manuelle. A systematic study for correlating the Rn escape with the main geochemical and mineralogical factors for understanding of some change processes from uranium deposits in Campo do Cercado C in Pocos de Caldas, Minas Gerais State is described. Developed methodology for the geologic control of the secondary uranium concentrations in Osamu Utsumi, Pocos de Caldas MG. It was developed a methodology for the geologic control of the mining of the secondary uranium concentrations in the Osamu Utsumi mine, Pocos de Caldas. A sequential systematization with the definitions and objectives of the operational phases of the mining explotation is shown, in addition of a scheme and flow charts of them. Fourth natural analogue working group meeting and Pocos de Caldas project final workshop. This plenary meeting was the opportunity to review and discuss five years of progress and activities of natural analogues in central areas of performance assessment: In addition, a feedback session provided the opportunity for regulators and those individuals who had advisory roles to give their views and impressions on the significance of natural analogue research. These proceedings, divided into two sessions, contain 32 technical papers and 14 abstracts of published papers. Transfer of radon from rocks of the Pocos de Caldas plateau to the waters. The methodology established was used to evaluate the emanation coefficient of Rn from experiments of water-rock interaction under singles de la valette du var meteo agricole conditions in the laboratory, which is an important parameter necessary to interpret the radioactivity related to dissolved Rn content in waters. Four typical rocks from Pocos de Caldas Plateau were sampled for the experiments: The Ra content of these rocks was evaluated by gamma-ray spectrometry using a Nal TI scintillation detector, a method that has been currently utilized in nuclear geophysics or isotope geochemistry to measure the equivalent uranium e U. The Ra content in the studied rocks and the Rn transferred to the waters due to its generation by its Ra progenitor allowed an estimation of the emanation coefficient of Rn. A preliminary investigation on the influence of the mass of the rock in contact with water, of the surface area of the rock in contact with water and of the Ra content in rocks on the amount of Rn released to the water was also performed. Experimental procedures and results are presented on the determination of thorium and organic dissolved carbon DOC in natural waters bore hole and surface waters from the Morro de Ferro, a thorium - rare earth occurrence situated in the Pocos de Caldas Plateau in Minas Gerais Brazil. A positive correlation between Th and humic compounds content was abserved. Utilizing ultrafiltration techniques with Amicon membranes XM, PM, UM and YM-2organic compounds with molecular weights above units were separated and concentrated from waters. Humic acid was separated from a percolation water sample and characterized by elemental and infrared spectroscopic analysis. The distribution coefficient of Th between water and sediment was shown to be inversely correlated to DOC concentration, as reported by other authors for different environments. These results were also confirmed by laboratory experiments, which indicated additionally that low concentrations of humic acid [pt. The chemical evolution and the origin of the groundwater, cold and thermal springs composition are analysed related to the geochemical environment of the Pocos de Caldas alkaline complex. The thermal waters origin are related to a large and deep open fracture system in three main directions: The tritium content when simultaneously analysed with the deuterium and oxygen set show that thermal waters are old meteoric waters years of age. On the other hand, the cold springs that circulate on the superficial levels are more recent, which is a characteristic of an acid oxidizing environment without sulfides and greater concentration of free CO 2 and Rn High concentrations of fluoride follow this process. Reducing environment with an increase in the sulphide content and a decrease in radioactivity are trends in the system studied. A large thorium ore deposit is located in Morro de Ferro, a hill in the Pocos de Caldas Plateau, Minas Gerais, Brazil, which contains an estimated 30 t of Th and t of U in a highly weathered matrix exposed to erosion and leaching. The concentrations in groundwater demonstrated that radium is markedly leached by rainwater percolating through the ore body. In its transit underground, radium is removed from groundwater by sorption on soil particles and this natural process greatly reduces the radium discharged to the environment. In dry weather, the concentration of dissolved Ra in the main stream draining the Morro do Ferro is 7. The estimated Ra mobilization rate by solubilization is of the order of 10 -7 y Effluent control for the uranium mine singles de la valette du var meteo agricole at Pocos de Caldas, Brazil. Although the industry has stopped the uranium extraction inthe installation is kept under regulatory control, as it has not yet been decommissioned. A screening procedure was set to control the effluent releases from the three main areas, the open pit mine area, the tailings dam and the waste rock singles de la valette du var meteo agricole. Monthly-composed samples are collected weekly at each outflow and sent to IRD. If the activity concentration for any of these nuclides surpasses the established reference level to that particular source, a complete dose assessment for the critical group is performed using the computer program, Monitor, built based on IAEA recommendations for dose assessment to critical groups. The results show that Brazilian regulations related to public exposure are being accomplished by the installation operation. It is pointed out the relevance of maintaining the current treatment to the acid drainages and effluents from the tailings dam, until the whole area is properly decommissioned. Las voces limpio y poco en el habla sur Andina de Nariño, Colombia. Full Text Available Este trabajo examina la dimensión sociolingü. Finalmente, se genera un conversatorio con los integrantes del Grupo de Investigación en Argumentación GIA,2 con la intención de triangular los datos obtenidos y confrontar las estructuras sociolectales de los enunciados analizados. De la empresa al mercado: Este modelo es el resultado de un proceso de desintegración vertical que lleva a vender los vehículos y a reubicar a los trabajadores dentro o fuera de la empresa. Las reformas del marco institucional que regula la prestación de este servicio, y las normas fiscales, contractuales y sociales que afectan los costos y beneficios de la prestación del servicio inciden de manera diferente en los distintos tipos de empresas. La desintegración vertical genera costos de salida que afectan al ritmo, la estrategia y el resultado del cambio del modelo organizativo. Creación de contenidos interactivos de deporte para televisión digital terrestre en Ecuador. La TDT puede implicar un cambio en la calidad de los contenidos pero sobre todo una oportunidad de acceso a la sociedad del conocimiento. Efectos de la RSC sobre el consumidor: Full Text Available El presente trabajo pretende contrastar los efectos que provoca el desarrollo de acciones de responsabilidad social corporativa, RSC, por parte de una empresa en el consumidor, en tres dimensiones: La idea es verificar, a través del contraste, hasta qué punto una empresa que desarrolla acciones de RSC es mejor percibida, preferida sobre las restantes y escogida en el momento de compra. Para ello se planteó realizar un estudio empírico en un sector de gran transcendencia social y que engloba características de la RSC: Statut, menaces et conservation des oiseaux endémiques terrestres de Polynésie française. Avec pas moins de 28 espèces d'oiseaux endémiques terrestresla Polynésie française peut être considérée comme un hot spot de la biodiversité. Cette avifaune se répartit sur îles éparpillées sur près de 5 millions de km2. Sur 28 espèces, cinq sont en danger critique d'extinction, et sept autres sont considérées comme en danger. Compte tenu de la faiblesse du nombre d'individus et de la petite taille des îles, ces oiseaux endémiques peuvent très vite passer au stade critique par le fait d A riqueza de espécies e a frequência de ocorrência foram estudadas de abril a outubro deutilizando dois métodos: As espécies com ocorrência mais frequente foram Didelphis sp. The noble gas Rn is a radioactive isotope of the element radon that can be found in atmospheric air, among others gases, at broad range of concentration. This isotope decays from U series, which is normally found in soil and rocks, especially in fault zones and fractures, where uranium presents greater mobility. The atmospheric high concentration of this gas is frequently related to confined environments including dwellings and other buildings with low air ventilation rate. Inhalation of this gas is acknowledged by international agencies such as WHO, as the second leading cause of lung cancer, being the first among the non-smoker population. That is the reason why, some countries have defined their regions with high radon potential where it is justified the implementation of construction techniques to reduce indoor radon concentration. GEORP encompasses simultaneous measurements of the soil gas permeability and radon soil gas concentration. A large variability was observed in both radon soil concentration and soil gas permeability. The majority of the points in this paper have been identified with high radon soil gas concentration showing values that reached 1, kBq. Instituto de Ciencia e Tecnologia. Patrones de distribución, abundancia y riqueza de especies de la avifauna terrestre de la isla de La Palma islas Canarias. Full Text Available We estimate the population size and density, habitat preferences, habitat breadth and probable population trends in the last years of the diurnal terrestrial bird species breeding in La Palma island Canary islands. Data were obtained in a large extensive census program carried out during the nesting period using line transects that allowed detectability estimations. We also explored patterns of species richness both at inter-habitat and local scale. Local species richness species per 0. It was also positively related to vegetation development specially in the herbaceous and shrub layer, and negatively associated with urbanization and agriculture. The bird species with lower population sizes are Falco [peregrinus] pelegrinoides, Burhinus oedicnemus distinctus, Upupa epops, Carduelis carduelis, Miliaria calandra and Petronia petroniawhile the last five species have undergone more negative population trends in the last years. Los datos fueron obtenidos durante el periodo reproductor deutilizando transectos lineales. En total se efectuaron transectos de 0,5 km repartidos por toda la. Dentro de las manifestaciones secundarias, se describen cambios como alteración de la concentración y la personalidad; de manera particular las lesiones que afectan al lóbulo parietal se asocian a déficit motor o sensitivo. En cuanto al diagnóstico imagenológico por RMN, los gliomas malignos se observan bien circunscritos con edema focal y captan el contraste en la periferia con un centro hipointenso. Se reporta el caso de paciente Masculino de 45 años de edad, cuyos hallazgos clínico-imagenológicos concuerdan con los previamente descritos por lo que se plantea el diagnóstico de glioma parietooccipital derecho. La baja frecuencia de esta entidad patológica y la repercusión en la morbimortalidad de los pacientes que la padecen singles de la valette du var meteo agricole a la presentación de este caso. Abstract english The Gliosarcoma GS is an aggressive primary neoplasm and rare in central nervous system CNS, composed of anaplastic astrocytic and mesenchymal elements clearly malignant. Among the secondary manifestations, described changes as impaired concentration and personality of lesions particularly affecting the parietal lobe is associated with motor or sensory. Le nuove tecnologie laser di misura terrestreintegrate da sensori di posizionamento e fotografici, consentono di rilevare in tempi ridotti e di rappresentare anche spazialmente sia singole unità edilizie sia interi insediamenti urbani. Degradación y rehabilitación de ecosistemas terrestres: Full Text Available Se estudió la anatomía de los tallos de 37 hierbas terrestres pertenecientes a 19 familias usadas en la medicina popular de la región rioplatense. El objetivo fue elaborar una clave dicotómica para la determinación de los taxones a partir de los caracteres morfo-histológicos de los tallos, ya sea que este material se encuentre al estado entero o fragmentado. Se estudiaron tallos frescos y de ejemplares de herbario, mediante técnicas histológicas convencionales. Entre los caracteres diagnóstico hallados se destacan: Los caracteres morfo-histológicos de los tallos permitieron elaborar una clave de diferenciación. A geostatistical investigation of the spatial variation of external gamma exposure in urban area of Pocos de Caldas Plateau. It consists in an alkaline intrusion with some uranium and thorium anomalies, where the first Brazilian uranium mining and milling facilities is located. Due to these facts, the population of Pocos de Caldas city shows a great deal of concern about radiation health effects. This perception of the risks of radiation exposure leads to much confusion among the population that attributes an imaginary excess without an scientific support of cancer cases and deformities in newborns in the city to radiation. In order to obtain information for help radiation risks management by government and to explore the spatial variation external gamma exposure a survey in the urban area of Pocos de Caldas city was done. The system consists of a high-sensitivity 5-liter singles de la valette du var meteo agricole detector, singles de la valette du var meteo agricole electronic for measurement system that is able to on-line separate natural and artificial gamma radiation Natural Background Rejection Detector NBRone compact Global Positioning System GPS and a computer notebook. Data was collected at approximately 50, points spread over all streets of city. The obtained results ranged from 40 nSv. The spatial distribution of gamma exposure over the city is singles de la valette du var meteo agricole homogeneous with lowest and highest values in western and southern area, respectively. Estimative of alpha radiation dose due to natural concentration of Ra in waters from Pocos de Caldas. A dosimetric model for calculating the annual dose equivalent for an individual and the annual collective dose equivalent from Ra is developed. This model is applied to the measured concentrations of Ra in waters of the hydro graphic basins of the Pocos de Caldas plateau, using the pathways of drinking water and ingestion of food grown in irrigated fields. A linear model for simulating potential Ra contamination of the waters of the region is also applied, and the doses from these contaminations are estimated using the dosimetric model developed. The average concentrations of Ra and Pb in foodstuff cultivated in the Pocos de Caldas plateau. The average concentrations of Ra and Pb in vegetables cultivated in the Pocos de Caldas plateau, mainly potatoes, carrots, beans and corn and the estimation of the average transfer factors soil-foodstuff for both radionuclides, were performed. The total Ra and Pb content in the soil was determined by gamma spectrometry. The exchangeable fraction was obtained by the classical radon emanation procedure and the Pb was isolated by a radiochemical procedure and determined by radiometry of its daughter Bi beta emissions with a Geiger Muller Counter. The Pocos de Caldas Alkaline Massif covers km 2a quarter of which is hydrothermally altered. Such proportion is uncommon, when compared to the know alkaline massifs of the world. The hydrothermal alteration is associated with Zr, U and Mo mineralizations which are predominantly located in the central-southern portion of the massif, in the central-eastern circular structure. The colour of the altered rock and its soil in that area is typically whitish beige to yellowish white and is regionally called potassic rock. The Osamu Utsumi Mine, also referred to as the uranium ore of Campo do Cercado, is located 25 Km to the south of Pocos de Caldas City and was explored, from tothrough the open pit method. A sequence of alteration minerals adapted to lowering temperatures should be expected; however, only illite and alkaline feldspar are observed in the hydrothermally altered portions of the massif, and their formation must have been controlled mainly by kinetic, other than thermal factors. The irrestrict circulation of relatively hotter hydrothermal fluids must have happened at the beginning of the process, diminishing immediately after the cooling of the brecciated areas and the subjacent magmatic bodyleading the system to kinetics levels that made subsequent hydrothermal alteration impossible. Geoprocessing as a technical tool for radiological assessment in the urban area of Pocos de Caldas, MG. The present study will introduce a methodology for spatial evaluation of external gamma dose throughout an urbanized region. As a case study, geoprocessing techniques were used to gather data, perform statistical and spatial data treatment related to natural gamma radioactivity throughout the Pocos de Caldas urban area. This information, which was initially punctual, could be correlated with the number of people exposed to natural radiation using the database from the census made available by IBGE Brazilian Geography and Statistics Institute. The census sector is the smallest piece of territory, with identifiable physical boundaries in the field, with adequate size for research operations. All 54, geoprocessed external dose values, within dosimetry ranges, presented a variation from 0. The results obtained, when compared to worldwide dose values 0. Nevertheless, the region has some areas with values higher than those observed elsewhere in the world, though in areas with lower population density. Estos mapas son difíciles de validar y su precisión a nivel local puede ser muy variable. Tomando en cuenta las leyendas iniciales, la comparación reveló incoherencias debidas en parte a las diferencias en los sistemas de clasificación. El uso de mapas globales de cobertura terrestre debe ser adecuadamente contextualizado en situaciones de gran diversidad. Systèmes coopératifs hybride Satellite- Terrestre: Les systèmes de communications par satellite sont utilisés dans le contexte de la radiodiffusion, de la navigation, du sauvetage et du secours aux sinistrés, car ils permettent de fournir des services sur une large zone de couverture. Cependant, cette zone de couverture est limitée par l'effet de masquage provoqué par des obstacles qui bloquent la liaison directe entre le satellite et un utilisateur terrestre. L'effet de masquage devient plus sévère en cas de satellites à faibles angles d'élé Presentamos aquí un resumen de los resultados enmarcados en las ideas y consejos del profesor. Contribution to the study of uranium migration and some trace elements in solution from Pocos de Caldas uranium mining. It was studied the chemical composition of ground water from four boreholes as a contribution to the hydrogeochemical studies in the Pocos de Caldas uranium mining. Methods for water analyses were selected and optimized in order to determine the main anions, specially the ones which form stable complexes with uranium ions. Fluoride and chloride were determined by potentiometry; phosphate, nitrate and silicate by spectrophotometry. Cations were determined by atomic absorption spectrophotometry flame emission and argon plasma emission excited by continuous current arch DCP. Uranium was determined by fluorimetry with a concentration range from 3 to 7 ppb and its distribution calculated among the different species into solution through the measures of pH, Eh, anion amounts and stability of their respective complexes. Study of the feasibility of the utilization of clays from Poco Fundo MG for its use in bricks fabrication. The clays from these region display high content of quartz, kaolinite and present refractory behavior, and the alkalis content Na 2 O and K 2 O is low, because the studied area suffered an intense weathering process. The sample PF presented the most promising ceramic results, mainly due to the lower content in silica and higher amounts of organic matter, denoting a clay coming from a swampy area. A highly weathered deposit of thorium and rare earth elements located near the summit of a hill Morro do Ferro in Pocos de Caldas M. The mobilization rates of the analogue elements by groundwater are so slow 10 -7 to 10 -9 per yearas to suggest that essentially complete radioactive decay of transuranic actinides would occur in place, even under the unfavorable conditions that exist at a site such as this. Study of the application of non-plastic clays from Pocos de Caldas - part 1: Pocos de Caldas is an important 'hidrotermomineral' center of Brazil, where can be found non-plastic clays deposits with no significant records about its characterization; this fact difficult the studies of industrial application. These nonplastic clays, not used, have been stored in sheds or open, which creates a high cost to the industry, and become an environmental liability. In the present work, the chemical-mineralogical study of six samples of non-plastic clays was realized, to expand the horizons of researches about such materials. This preliminary study showed that, overall, the samples are composed of refractory minerals such as kaolinite and gibbsite, with less significant amounts of other phases such as quartz, illite and vermiculite. The chemical analysis permitted the grouping of raw materials into two groups according to their refractories proprieties, guiding to the subsequent characterization. Revisiting Pocos de Caldas. Application of the co-precipitation approach to establish realistic solubility limits for performance assessment. Solubility limits constitute a critical parameter for the determination of the mobility of radionuclides in the near field and the geosphere, and consequently for the performance assessment of nuclear waste repositories. Mounting evidence from natural system studies indicate that trace elements, and consequently radionuclides, are associated to the dynamic cycling of major geochemical components. We have recently developed a thermodynamic approach to take into consideration the co-precipitation and co-dissolution processes that mainly control this linkage. The approach has been tested in various natural system studies with encouraging results. The Pocos de Caldas natural analogue was one of the sites where a full testing of our predictive geochemical modelling capabilities were done during the analogue project. The outcome is as follows: A satisfactory modelling of the behaviour of U, Zn and REEs is achieved by assuming co-precipitation with ferrihydrite. Strontium concentrations are apparently controlled by its co-dissolution from Sr-rich fluorites. From the performance assessment point of view, the present work indicates that calculated solubility limits using the co-precipitation approach are in close agreement with the actual trace element concentrations. Furthermore, the calculated radionuclide concentrations are orders of magnitude lower than conservative solubility limits calculated by assuming equilibrium with individual trace element phases. Differential measurement of the earth's magnetic field by nuclear magnetic resonance; Mesure differentielle du champ magnetique terrestre par resonance magnetique nucleaire. MNR transducers using proton dynamic polarisation allows to convert into a phase measurement any variation of the earth magnetic field. There exist several versions of the instrument corresponding to various models of MNR transducers, which the author analyses in detail, devoting an important place to influence of their alignment with respect to the earth's magnetic field. The sensibility obtained is of one hundredth of a gamma over a bandwidth of ,1 Hz. L'appareil existe sous plusieurs versions avec des capteurs de modeles differents dont l'auteur fait une analyse detaillee en accordant une part importante a l'influence de l'orientation des capteurs par rapport au champ magnetique terrestre. Cet appareil s'applique a la mesure du gradient en prospection magnetique aeroportee, a la detection d'anomalies magnetiques proches, a la differentiation d'effets magnetiques proches et lointains. A varredura foi realizada em um giro de graus com resoluções de 10 mm e 50 mm a 50 metros em dois pontos distintos do povoamento. Solución del ejercicio "JavaScript: The International intraval project. Hagamos del mundo un lugar mejorPhase 1, case 7. The Pocos de Caldas natural analogue: The study of natural analogues is an important means of validating models of the geochemical processes affecting radionuclide behaviour. This test case, which is one aspect taken from the much broader geochemical studies carried out in the Pocos de Caldas Project, concerns the singles de la valette du var meteo agricole and behaviour of redox fronts, such as might be generated in the near-field of a spent-fuel repository. A redox front is potentially important in terms of the movements and speciation of certain radionuclides close to the waste package. This report, describes the geological, hydrogeological and geochemical nature of the site, and of the redox fronts. Emphasis is placed on the mineralogy of the fronts, and the concentration profiles of various elements across them. The project involved a number of different modelling approaches which attempted to describe the generation and movement of the fronts through the rock. These included mass balance, reaction-diffusion models, fissure flow models, thermodynamic models, and kinetic models. Afterwards, the interaction was studied between Ra and local river sediments and waters. Peliminary studies were also done on the mobility of Ra retained on solid matter or soil, induced by local waters. Above normal concentrations of U, Ra and Pb were found in local waters, sediments and plants collected on the imediate vicinity of the mine. It was concluded that, in the future, Ra discharged into liquid environment should be only temporarily retained by sediments. Its transport by surface waters should be predominantly in the soluble form. Plant communities in the terrestrial-aquatic transition zone in the paramo of Chingaza, Colombia. High Andean paramo ecosystems are an important water resource for many towns, and major cities in this region. The aquatic and wetland vegetation of different paramo lakes, pond, swamps and bogs was studied according to the classical phytosociological approach, which is based on homogenous stands, but excludes any border phenomena or transitional zone. The present research aimed at determining the. La modelización global del campo magnético terrestre no es sólo fundamental para comprender cómo funciona y varía en el tiempo, sino también para constreñir los modelos de geodinamo y corregir las tasas de producción de isótopos cosmogénicos. Obtener modelos suficientemente realistas depende en gran medida de las bases de datos empleadas. Una nueva especie de rana terrestre del género Pristimantis Amphibia: Asignamos a Pristimantis almendariz sp. Un poco de Matemagia. |