973 resultados para RED-SEA


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"First American edition, first printing" -- Cf. Cagle.

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There's trouble on the sea.--Nancy.--Sally's "turns".--The doctor's big fee.--Two cat's-paws.--The triple alliance.--Portland Bill.--Kaiachououk.--Two Christmases.--The leading light.--The Red Island shoals.

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American edition has title: A woman of the Shee and other stories.

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El objetivo del presente artículo es analizar la división del trabajo político de una red de organizaciones sociales lideradas por una ONG de Promoción y Desarrollo (ONGPD), explorando el capital político como mecanismo para obtener reconocimiento, el que permite imponer los criterios propios de valores frente a otros y establecer las reglas de juego. El juego del campo político descansa sobre la exclusión de aquellos que poseen un capital político menor. De ahí que los "profesionales" del campo de las políticas sociales están legitimados a decir y hacer, no por la relación directa con las organizaciones representadas (los "profanos") a través de la figura de la red, sino en relación con los otros miembros del campo (técnicos, políticos o funcionarios). Esta suerte de efecto de cerramiento es el resultado de la autonomización del espacio político, que cuanto más avanza según su lógica propia, profundiza la ruptura con los profanos. Sin embargo, cabe señalar que no puede cerrarse por completo: quienes forman parte del centro simbólico de la red deben hacer referencia a aquellos en nombre de los cuales se expresan y frente a quienes deben rendir cuentas, aunque sea de forma relativamente ficticia, para poder permanecer en el mundo de las políticas sociales y sus recursos. La comprensión y explicación, en sus múltiples dimensiones, de las formas locales de construcción del poder de las ONGPD a partir de la crisis de 2001, dentro del marco de las políticas sociales, permite indagar las características de la participación y representación actuales. Por un lado, ¿las ONGPD son un mecanismo de mediación entre los excluidos y el Estado? ¿O los excluidos son mecanismos de mediación entre las ONGPD y el Estado? ¿Quiénes se benefician de esta relación y cómo se construye?

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Protection of the Marine Environment from Sewage

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Hypotheses of origin of ocean deep red clays are under discussion. On an example of the Pacific Ocean grain size, mineralogy and chemical composition of clays are considered. It is shown that they formed from atmospheric dust and andesite pyroclastics. Accumulation of the clays occurred through deposition particle-by-particle and by pellet transport.

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Red blood cells (RBCs) are key players in systemic oxygen transport. RBCs respond to in vitro hypoxia  through  the so-called  oxygen-dependent  metabolic  regulation,  which  involves  the competitive  binding  of  deoxyhemoglobin  and  glycolytic  enzymes  to  the  N-terminal  cytosolic domain  of  band  3.  This  mechanism  promotes  the  accumulation  of  2,3-DPG,  stabilizing  the deoxygenated state of hemoglobin, and cytosol acidification, triggering oxygen off-loading through the  Bohr  effect.  Despite  in  vitro  studies,  in  vivo adaptations  to  hypoxia  have  not  yet  been completely elucidated. Within  the  framework  of  the AltitudeOmics  study,  erythrocytes  were  collected  from  21 healthy volunteers at sea level, after exposure to high altitude (5260m) for 1, 7 and 16days, and following  reascent  after  7days  at 1525m.  UHPLC-MS  metabolomics  results  were  correlated  to physiological and athletic performance parameters. Immediate  metabolic  adaptations  were  noted as early as a few hours from ascending  to >5000m, and maintained for 16 days at high altitude.  Consistent with the mechanisms elucidated in vitro, hypoxia promoted glycolysis and deregulated the pentose phosphate pathway, as well purine catabolism, glutathione homeostasis, arginine/nitric oxide and sulphur/H2S metabolism. Metabolic adaptations were preserved one week after descent, consistently with improved physical performances in comparison to the first ascendance, suggesting a mechanism of metabolic memory.

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Piston cores from the continental margin off Nova Scotia show up to four discrete intervals of "brick-red sandy mud", which are up to 20 cm thick. The ages of these intervals are bracketed by several radiocarbon dates, and three fall in the range 12.5-14.1 ka (radiocarbon years with -0.4 kyr reservoir correction). The youngest dates from ~10.4 ka, placing it within the Younger Dryas. The distribution of the beds and their petrographic character indicate a source in the Gulf of Saint Lawrence. The grain size of these beds suggests that they comprise a coarse component transported by ice rafting that diminishes distally and a fine component that represents suspension fallout from a surface plume and resulting nepheloid layers. Graded brick-red beds in some cores were probably redeposited from turbidity currents. The lowermost bed on the Laurentian Fan and East Scotian Rise is immediately overlain by a carbonate-rich interval that can be identified all around the margin of the Grand Banks. This interval is correlated with detrital carbonate bed DC-1 in the Labrador Sea and Heinrich event H1 in the North Atlantic. The sequential occurrence of the two beds suggests that they may be a response to the same trigger, probably sea level rise, but that the Gulf of Saint Lawrence source was more easily destabilized.

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Chemical analyses are presented for two Cretaceous clays from Noil Tobee, Timor. Mineralogical examination has shown that they consist principally of quartz, feldspar, illite and chlorite, together with minor amounts of montmorillonite. Both chemically and mineralogically the clays are very similar to the recent argillaceous deep-sea sediments of the Pacific and Indian Oceans, which confirms Molengraaff's theory (1921) that they are of deep-sea origin. Further confirmation of this theory is provided by comparison of the composition of micromanganese nodules, separated from one of these clays, with that of manganese nodules from the Pacific Ocean.