Sedimentary environments of the Baiona Basin (Pontevedra)

[Resumen] Debido a las características de la ensenada de Baiona se consideró interesante la realización de un estudio de la distribución sedimentaria en relación a la dinámica litoral. En la actualidad se ha observado en este área una marcada zonación dinámica provocada, por la acción combinada de mareas y frentes de oleaje, por su propia configuración geográfica y por las construcciones portuarias realizadas en los últimos años. En función de las características, sedimentarias e hidrodinámicas observadas en la zona se han diferenciado tres ambientes sedimentarios: playas, conjunto deltaico de marea y zona submareal.[Abstract] Due to the special characteristics of the Baiona basin the study of the sedimentary distribution related to the litoral dynamic was considered to be interesting. At present a very well delined zonation was observed, caused by the action of the tides and waves fronts, by its particular physiographic configuration and by harbour constructions that took place lately. According to the sedimentary and hydrodynamic characteristics of the zone, three sedimentary environments have been diferentiated: beaches, delta tide and subtidal zone

A comparative life cycle assessment of single-use fibre drums versus reusable steel drums

This paper deals with a comparative analysis of two different packaging and transport scenarios, which exemplifies the implications of choosing between single-use and reusable packaging. In particular, transport of a batch of chemicals by means of disposable fibre drums vs. reusable steel drums is investigated from a life cycle perspective, and the associated environmental impact in terms of Global Warming Potential, Acidification Potential, Gross Energy Requirement and solid waste generation is assessed. Results prove beyond reasonable doubt that, even in the case of durable packaging containers requiring the use of comparatively energy-intensive materials for their production, the reuse scenario is characterized by lower environmental impact indicators across the board, and as such is the most advisable and environmentally sound option

Reconstrucción de la dinámica del sistema barrera-lagoon del Parque Nacional de las Islas Cíes a partir de su registro sedimentario

XV lnternational A.P.L.E. Symposium of Palynolog

High-radiance LED-driven fluidized bed photoreactor for the complete oxidation of n-hexane in air

This work presents a highly efficient photo-reactor configuration for VOC abatement. It consists of a fluidized bed made of commercial, easy to fluidize, transparent borosilicate glass beads coated with commercial TiO2 nanoparticles (0.15–2.3 wt% loadings). Herein, we demonstrate that the use of high-radiance/low consumption UV-LEDs as irradiation sources with a deeper light penetration under fluidizing conditions facilitates the photocatalytic response to achieve the complete oxidation of VOCs. The role of different parameters such as catalyst loading and irradiation power have been thoroughly studied and evaluated to maximize the full combustion of n-hexane. Under the high radiance (up to 2200 mW/cm2) conditions used the bed heats significantly (up to 190 °C), although this did not have an effect on the conversions reached, which depended solely on the wavelength and power used. The productivity of the photoreactor tested and the space velocity used were around 5.25 × 10-2 mol/g·h and 12000 h-1 respectively

Climate fluctuations during the Holocene in NW Iberia: high and low latitude linkages

International audienceHigh resolution benthic foraminiferal oxygen and carbon stable isotopes (?18O, ?13C) from core EUGC-3B are used here to infer rapid climatic changes for the last 8500 yr in the Ría de Muros (NW Iberian Margin). Benthic foraminiferal ?18O and ?13C potentially register migrations in the position of the hydrographic front formed between two different intermediate water masses: Eastern North Atlantic Central Water of subpolar origin (ENACWsp), and subtropical origin (ENACWsp). The isotopic records have been compared with two well established North Atlantic marine Holocene paleoceanographic records from low (Sea Surface Temperatures anomalies off Cape Blanc, NW Africa) and high latitudes (Hematite Stained Grains percentage, subpolar North Atlantic). This comparison clearly demonstrates that there is a strong link between high- and low-latitude climatic perturbations at centennial-millennial time scales during the Holocene. Spectral analyses also points at a pole-to-equator propagation of the so-called 1500 yr cycles. Our results demonstrate that during the Holocene, the NW Iberian Margin has undergone a series of cold episodes which are likely triggered at high latitudes in the North Atlantic and are rapidly propagated towards lower latitudes. Conceivably, the propagation of these rapid climatic changes involves a shift of atmospheric and oceanic circulatory systems and so a migration of the hydrographical fronts and water masses all along the North Atlantic area

El desarrollo del turismo de masas en Mallorca

En la presente Memoria de Investigación se realiza una contextualización histórica a nivel europeo, español y mallorquín de las condiciones que posibilitaron el desarrollo del turismo de masas hacia la década del sesenta. Se establece una periodización del medio siglo de la mencionada actividad en Mallorca. Se establecen los objetivos y la especificidad del tema a tratar, además de la hipótesis central y la metodología a aplicar en la futura investigación. En coincidencia con estas, se definen siete categorías teóricas idóneas para el análisis y compresión del tema. Se elabora un Estado de la Cuestión multidisciplinario del tema teniendo en cuenta la producción bibliográfica de los últimos quince años. Para finalizar, se señala la bibliografía utilizada para la elaboración de la menciona memori

El efecto de exposición en el patrón sedimen- tario del sector submareal de tres playas en la Ría de Muros y Noia (NO de España)

En este trabajo se presenta la comparación de los sedimentos superficiales de la plataforma proximal de tres complejos playeros situados en las inmediaciones de la embocadura de la Ría de Muros y Noia. En cada uno de ellos, se han identificado las distintas poblaciones sedimentarias en función de los análisis granulométricos realizados. La aplicación de un análisis estadístico de componentes principales a las fracciones granulométricas, contenido en carbonatos y materia orgánica, ha permitido diferenciar poblaciones de muestras y la interpretación sedimentaria de las mismas. Las diferencias observadas en la distribución de las poblaciones sedimentarias de los tres complejos estudiados son una consecuencia del grado de exposición de cada complejo al oleaje dominante y de la presencia de afloramientos rocosos sumergidos que ejercen un efecto barrera.The subaquatic sediments from the inner continental shelf of three beach systems located in the surrondings of Ría de Muros y Noia mouth are compared. Different sedimentary populations have been stablished according to the granulometric distribution from each system. The grain-size distribution, carbonate and organic matter content have been compared by means of a principal component analysis. The results allow the identification of different populations as well as their sedimentary significance. The observed differences between the sedimentary populations from each system are explained as a consequence of their grade of exposure towards the dominant waves and the presence of subaquatic rocks, which introduce a barrier effect

A Survey on Virtue in Business and Management (1980-2011)

Virtue ethics is generally recognized as one of the three major schools of ethics, but is often waylaid by utilitarianism and deontology in business and management literature. Focusing on publications in the Thomson-Reuters Journal of Citation Report between 1980 and 2011, we use EBSCO and ABI databases to look for articles containing the keywords 'virtue ethics', 'virtue theory' or 'virtuousness' in the abstract together with 'business' or 'management' in the text. We refined our search to draw lists of the most prolific authors, the most cited authors, the most cited articles and the journals with the most virtue ethics publications. This information allows us to chart how virtue ethics articles have evolved through the decades and establish clusters of authors as well as clusters of themes. These findings also provide a foundation for future study of the meanings of virtue ethics and the achievement and potential of different persuasions within virtue ethics research. We believe this will make a significant contribution to business ethics scholarship and management education by supplying both with a solid philosophical and anthropological mooring

Persistence of Zika virus in semen 93 days after the onset of symptoms

INTRODUCTION: Zika virus is mainly transmitted through the bites of infected Aedes mosquitoes, although mother-to-child and sexual transmission have also been described. The presence of Zika virus in semen after infection seems to be not uncommon, but the duration of viral persistence has not been well-determined. METHODS: Molecular, serological and cell culture methods were used for the diagnosis and follow up of a case of Zika virus infection imported from Venezuela. Serial samples of serum, urine and semen were analyzed to investigate the persistence of the Zika virus. RESULTS: Zika virus was detected in semen samples up to 93 days after the onset of symptoms. CONCLUSIONS: Our results confirm the persistence of Zika virus in semen samples for long periods after infection