Recent sediments of the Eume river: mineralogical and textural composition

[Resumen] Se analiza la granulometría, textura y mineralogía de sedimentos recogidos en los fondos de la ría de Ares, estuario y tramo final del río Eume. Texturalmente, las muestras se agrupan en francolimosas o francoarenosas y su distribución está defmida según las características dinámicas de la ría y las modificaciones realizadas por las obras de infraestructura. La mineralogía de la fracción arcilla es muy homogénea, con caolinita y filosilicatos 2: 1 dominantes, junto con pequeñas antidades de cuarzo y feldespato. El contenido en carbonatos es bajo, siempre menor del 30 %, destacando los porcentajes encontrados en el sondeo de la cola del embalse del Eume, de origen claramente antrópico. Textura y mineralogía son coherentes con el marco geológico del que proceden, excepto en la presencia de carbonatos y exceso de partículas finas con caolinita cristalina existentes en la cola del embalse del Eume. La distribución de las partículas, según su tamaño, obedece fundamentalmente a causas naturales, pero existen imponantes modificaciones relacionadas con el papel de barrera del embalse y las obras de infraestructura que han alterado la circulaci6n original en algunas zonas del estuario y desembocadura.[Abstract] A textural and mineralogical analysis is made to sediments sampled at the bottom of the Ría de Ares, estuarine and Eume river. Clay mineralogy is very similar for all the samples and consists of kaolinite and 2: 1 phyllosilicates with small amounts of quartz and fe'ldspar. The percentage of carbonates is small, always less than 30 o/o. There should be pointed out the values found in the Eume reservoir core, with a clear antropic origino Texture and mineralogy are coherent with the geology of the basin they come from, excepting the carbonates and fine particle excess with cristaline caolinite in the Eume reservoir core. Size grain distribution is due to the dinamic characteristics of the ría, but there are important rnodifications related to the reservoir, that acts as a barrier, and the constructions in the lower part of the river that have changed the original circulation in sorne areas of the ría

Meteorización de las granulitas de Cabo Ortegal

[Resumen] Se realiza el estudio químico y mineralógico del proceso de alteración, en medios sustractivos, de las granuli tas de Cabo Ortegal, la precipi tación media anual supera los 1.300 mm. y las temperaturas medias mensuales extremas son 23ºC y 4,7ºC. Durante el proceso de meteorizaciór se origina una fuerte pérdida de Ca, Na y Mg y,en menor proporción, de Si con acumulación relativa de Fe y Al. Como productos de alteración aparecen filosilicatos 1:1 dioctaédricos, gibbsita, oxihidróxidos de hierro y micas y cloritas degradadas. La edafogénesis es de tipo fermonosialítico con una tendencia ferralítica, al menos en sus fases iniciales.[Abstract] This paper is a chemical and mineralogical study about the weathering process, in subtr&ctive environments, of the granul i tes in Cabo Ortegal. The mean annual precipitation is over 1.300 mm. and the mean monthly extreme temperatures are 23ºC and 4,7ºC . In the process of weathering there is an intense 10S8 of Ca, Na and Mg and, in a minar level , of Si, with a relative accumulation of Fe and Al. Proqucts of the weathering are 1: 1 dioctahedral phyllosilicates, gibbsi teiron oxyhydroxides and degraded micas and chlorites. The pedogenesis is of fermonosialli tic type wi th a ferrallitic tendence, in the first phases at least

Mineralogía de la fracción arcilla de suelos y sedimentos de la Cuenca de Maceda

[Resumen] Se estudia la mineralogía de la fracción arcilla de los sedimentos terciarios y cuaternarios que rellenan la depresión de Maceda,así como de las rocas que constituyen el marco y sus productos de alteración. Las rocas que rodean la cuenca están sometidas actual mente a un proceso de alteración de tipo hidrólisis ácida (caolinita, gibbsita y oxihidróxidos de hierro son los productos de alteración más significativos) Los sedimentos terciarios presentan en su fracción arcilla un filosilicato 1:1 dioctaédrico(haloisítico o caolinítico) como mineral más ahlndante, micas, micas degradadas, goethita y, ocasionalmente, hematita,observándose la presencia de vermiculitas de baja carga en las capas mas profundas. Los depósitos más recientes contienen abundante filo silicato 1:1 dioctaédrico de bajo grado de orden y gibbsita, micas degradadas en cantidades variables y goethita.[Abstract] The igneous and metamorphic rocks that surround the Maceda depressian are subjected to a weathering of acidic hydrolysis type (kaol inite, gibbsite and Fe-oxihydroxides are the more repl'esenta"LJ.ve weathering products). The tertiary sediments have as principal component a 1:1 diocthaedral phyllosilicate (halloysite or kaolini te) associated wi th micas, degradated micas, goethita-:occasionally hematite and in the deepest layers, low charge vermiculites • - The newest deposits have disordered 1:1 diocthaedral phyllosilicate and gibbsite, changing proportions of degradated micas and goethit

Influence of geological material and about content of heavy metals in superficial horizons of L:1 Coruñ:1 soils

[Resumen] Los contenidos totales de Cr, Ni, Cu, Zn, Pb, Co y Mn en horizontes superficiales de suelos desarrollados sobre diferentes materiales geológicos de la provincia de La Coruña, ponen de manifiesto la importancia del factor litológico respecto a los aportes de origen antrópico. Los suelos sobre rocas ultramáficas y máficas muestran contenidos de Cr, Ni YCu que superan en muchas ocasiones los umbrales considerados de fitotoxicidad por diferentes autores. Le siguen los esquistos ricos en biotita, mientras que sobre granitos y pizarras se obtienen los valores medios más bajos. Los resultados obtenidos permiten realizar una primera aproximación acerca de la «aptitud» de los suelos de cultivo como receptores de lodos residuales..[Abstract] The total contents of Cr, Ni, Cu, Zn, Pb, Co and Mn in superficial horizons of soils that are developed on different geological materials of La Coruña region (Spain), reveal the importance of the lithologic factor with respect to the contribution of anthropic. origino The soils on ultramafic and mafic rocks show contents of Cr, Ni and Cu that are many times higher than threshold considered phytotoxic by different authors. These are followed by the schists, rich in biotite, while the lowest average values are obtained on granites and slates. The obtained results allow a first approach about the «attitude» of the cultivable soils as receptore of waste sludge

Effect of Stakeholders-Oriented Behavior on the Performance of Sustainable Business

This study focuses on stakeholder-oriented behavior, throughout organizational culture and organizational behavior, and its effects on the performance of sustainable organizations managed according to Corporative Social Responsibility (CSR) criteria. The investigation demonstrates that the sustainability efforts of a wide range of stakeholders exert various effects on business performance. This investigation tests two integrated conceptual models: (a) Stakeholder Orientation Model estimates the relationships among organizational culture components and their effects on stakeholder-oriented organizational behavior. That is, it estimates the influence of values on norms and artifacts, and their effects on stakeholder-oriented organizational behavior; (b) Performance model estimates the association between stakeholder-oriented organizational behavior and financial and market performance, reputation, and commitment. Using Structural Equation Modelling, both models were estimated from primary data collected from large- and medium-sized multi-sector Colombian companies involved in business sustainability practices. The findings reveal that values are antecedents of norms, but neither values nor norms are predictors of artifacts. Furthermore, norms and artifacts exert direct effects on stakeholder-oriented organizational behavior. In turn, stakeholder-oriented organizational behaviors are predictors of both market performance and commitment. Nevertheless, stakeholder-oriented organizational behaviors are not direct antecedents of both financial performance and reputation.S

Tsunami generation potential of a strike slip fault tip in the westernmost Mediterranean

Tsunamis are triggered by sudden seafloor displacements, and usually originate from seismic activity at faults. Nevertheless, strike-slip faults are usually disregarded as major triggers, as they are thought to be capable of generating only moderate seafloor deformation; accordingly, the tsunamigenic potential of the vertical throw at the tips of strike-slip faults is not thought to be significant. We found the active dextral NW–SE Averroes Fault in the central Alboran Sea (westernmost Mediterranean) has a historical vertical throw of up to 5.4 m at its northwestern tip corresponding to an earthquake of Mw 7.0. We modelled the tsunamigenic potential of this seafloor deformation by Tsunami-HySEA software using the Coulomb 3.3 code. Waves propagating on two main branches reach highly populated sectors of the Iberian coast with maximum arrival heights of 6 m within 21 and 35 min, which is too quick for current early-warning systems to operate successfully. These findings suggest that the tsunamigenic potential of strike-slip faults is more important than previously thought, and should be taken into account for the re-evaluation of tsunami early-warning systems.Versión del edito

Maíz de alto contenido proteínico (Zea mays l.) en hogares rurales marginados del estado de Puebla

El déficit en ingesta diaria de proteínas y calorías registrado en la población infantil mexicana, se muestra de modo extremo en áreas rurales. El déficit se agudiza por la problemática económica y sanitaria actual, lo que se constituye en un problema alimentario de naturaleza nacional. En este trabajo se estudió el nivel de aceptabilidad del maíz de alta calidad proteínica (ACP) con el cálculo de un índice de aceptabilidad, con información de 78 productores, del sur del estado de Puebla, que participan en un programa de la SDR, caracterizados por IDH bajo y alto índice de desnutrición. Se aplicó un cuestionario de 51 preguntas a una muestra por muestreo aleatorio simple, con grado de confiabilidad de 95%. Se encontró que la semilla del maíz ACP se distribuye con sus atributos proteínicos, pero con una deficiente transferencia de tecnología; con índice de aceptabilidad del 60%, que muestra buena aceptación para ser sembrado por los productores. Lo siembran uno, dos o tres años, valorando sus circunstancias para repetirlo en ciclos siguientes, ignorando sus propiedades proteínicas. El consumo, del maíz ACP se incorpora al forraje para animales de traspatio y esporádicamente en la dieta de la familia

Analyzing the tidal-related origin of subinertial flows through the Strait of Gibraltar

The effects of tidal dynamics on subinertial flows through the Strait of Gibraltar are analyzed. As found in previous studies, an empirical orthogonal function analysis of subinertial currents at the Camarinal Sill yields two dominant oscillation modes. The first mode presents a barotropic character and rather irregular fluctuations and it has been related to meteorological forcing. The second mode is baroclinic and presents a clear deterministic behavior with time that seems to be related to tidal forcing. Against the hypothesis proposed in previous studies stating that tidal mixing cycles explain the second mode, we show, by using a one-dimensional numerical model of two-layer immiscible shallow water, that the origin of this mode may basically be related to nonlinear interactions among the main semidiurnal tidal constituents through the advective terms in the momentum balance and other nonlinear terms in the volume conservation equations. That mode is also crucial to understanding the vertical shear time variations of the horizontal currents. In particular, it minimizes the differences in the maximum shear between neap and spring tides

Keys to the success of the CB Conquero

Cuando un club consigue éxitos deportivos a nivel profesional, existe un gran interés por investigar cuales han sido los factores claves de ese éxito. En esta investigación, se pretende analizar la influencia de diferentes factores como el contexto deportivo, el contexto social y aspectos del entrenamiento deportivo en el éxito del Club Baloncesto Conquero a través de la percepción de 13 informantes clave por su vinculación con el equipo y con el baloncesto onubense. Se realizó una entrevista, relacionada con los factores y las claves del éxito. Los resultados mostraron que la planificación de la plantilla junto al gran trabajo del cuerpo técnico, cuerpo médico y el preparador físico han sido las claves para que el club obtuviera los éxitos deportivos.When a team gets sport successes to level profesional, generates the topics that will be investigated such as the key factors of the succes. The main aim of this study is to analyze the influencie of different factors like the sports context, the social context and training aspects in the success of the Club Baloncesto Conquero through direct perception of thirteen informants associated with the team and the basketball in Huelva. An interview was carried out, related with those factors and the keys to success. The results revealed that workforce planning along the great work of coaching staff, medical staff and physical trainer have been key to the team gets sport successes

Planck 2013 results. XXII. Constraints on inflation

We analyse the implications of the Planck data for cosmic inflation. The Planck nominal mission temperature anisotropy measurements, combined with the WMAP large-angle polarization, constrain the scalar spectral index to be ns = 0:9603 _ 0:0073, ruling out exact scale invariance at over 5_: Planck establishes an upper bound on the tensor-to-scalar ratio of r < 0:11 (95% CL). The Planck data thus shrink the space of allowed standard inflationary models, preferring potentials with V00 < 0. Exponential potential models, the simplest hybrid inflationary models, and monomial potential models of degree n _ 2 do not provide a good fit to the data. Planck does not find statistically significant running of the scalar spectral index, obtaining dns=dln k = 0:0134 _ 0:0090. We verify these conclusions through a numerical analysis, which makes no slowroll approximation, and carry out a Bayesian parameter estimation and model-selection analysis for a number of inflationary models including monomial, natural, and hilltop potentials. For each model, we present the Planck constraints on the parameters of the potential and explore several possibilities for the post-inflationary entropy generation epoch, thus obtaining nontrivial data-driven constraints. We also present a direct reconstruction of the observable range of the inflaton potential. Unless a quartic term is allowed in the potential, we find results consistent with second-order slow-roll predictions. We also investigate whether the primordial power spectrum contains any features. We find that models with a parameterized oscillatory feature improve the fit by __2 e_ _ 10; however, Bayesian evidence does not prefer these models. We constrain several single-field inflation models with generalized Lagrangians by combining power spectrum data with Planck bounds on fNL. Planck constrains with unprecedented accuracy the amplitude and possible correlation (with the adiabatic mode) of non-decaying isocurvature fluctuations. The fractional primordial contributions of cold dark matter (CDM) isocurvature modes of the types expected in the curvaton and axion scenarios have upper bounds of 0.25% and 3.9% (95% CL), respectively. In models with arbitrarily correlated CDM or neutrino isocurvature modes, an anticorrelated isocurvature component can improve the _2 e_ by approximately 4 as a result of slightly lowering the theoretical prediction for the ` <_ 40 multipoles relative to the higher multipoles. Nonetheless, the data are consistent with adiabatic initial conditions