Interpretación geomorfológica del área de las salinas y su implicación en el modelado actual de la cuenta neógena de Tabernas, Almería

[Resumen] De la interpretación geomorfológica y evolutiva de una pequeña área representativa del sistema sedimentario (fluvio-aluvia1) de edad Pleistoceno superior-Holoceno del borde N de la Cuenca neógena de Tabernas (Almería) se evidencia como característica de esta región el predominio de los procesos de erosión frente a los de acumulación. Los factores que han condicionado los procesos erosivos han sido: el cambio del nivel de base, el clima, la tectónica y la litología. Los rasgos geomorfológicos actuales de esta región son el resultado de la convergencia de diferentes sistemas morfogenéticos que han actuado desde el final del Pleistoceno superior y/o comienzos del Holoceno hasta la actualidad.[Abstract] The geomorphic and evolutive interpretation of a small representative area in the upper Pleistocene-Holocene, fluvio-alluvial sedimentary system in the northern border of the Tabernas neogene basin suggests the dominance of erosion on deposition. The main controls have been related to a change in the base level, climate, techtonics and lithology. Present-day geomorphic features result from the convergency of different morpho-genetic systems that have been acting since the end of upper Pleistocene and/or the beginning of the Holocene

Thermal-hydraulic-mechanical (THM) behaviour of a large-scale in situ heating experiment during cooling and dismantling

A geological disposal facility for high-level radioactive waste (HLW) encompasses both natural (host rock) and (generally clay-based) engineered barriers. Many processes can influence, either positively or negatively, the effectiveness of the safety functions of isolation and retardation. This paper focuses on the analysis of a large-scale heating test when subjected to cooling and subsequent partial dismantling. The experiment reproduces the conditions of an HLW repository at full scale under realistic conditions. Key thermal, hydraulic, and mechanical (THM) variables, such as temperature, relative humidity, stresses, and fluid pressures, were measured in the clay barrier and surrounding rock. The experimental observations recorded during the cooling down and clay barrier excavation are analyzed in light of a fully coupled THM finite element formulation. This analysis has provided the opportunity to explore the behaviour of the clay and natural barriers under conditions very relevant for the repository performance but not analyzed previously. Overall, the model predictions are quite satisfactory when compared against experimental observations. Furthermore, model predictions for a period of 20 years, including the transient phase induced by the partial dismantling, are also presented. This additional analysis has allowed a better understanding of the effect of thermal gradient on long-term clay hydration

El símbolo perdido: estética y pensamiento en las adaptaciones cinematográficas de obras de Antonio Buero Vallejo

Cuatro adaptaciones cinematográficas se han hecho de obras de Antonio Buero Vallejo, cantidad modesta si se compara con la de otros dramaturgos de su talla. En el presente artículo se analizan por primera vez estos filmes en busca de las causas que expliquen el aparente desinterés del cine hacia dicho autor. La tesis que se plantea es la de que existen dos elementos estético-filosóficos en la dramaturgia de Buero, el simbolismo y la “tragedia esperanzada”, difíciles de llevar a la gran pantalla, por lo que los adaptadores han optado siempre por mitigarlos o incluso por anularlos

Effect of force angle on the strain distribution of osseointegrated dental implants

International audienceIn this work, we investigate the response of the anisotropic maxilla bone in the peri-implant region, when osseointegrated implants are subjected to external forces at different angles, based on the stress and strain distribution by the finite element method. Models were created to represent a portion of a maxilla bone (upper first molar region) with two types of implants which have different thread geometry (squared and V-shaped) and material (Ti-6AL-4V ELI and grade IV Titanium). Compressive axial (150 N) and oblique load (150 N at 45° angle) were applied to anisotropic models of the bone tissues. Complete osseointegration was assumed. Results demonstrated that the increase of the implant inclination leads to a more critical behaviour. Oblique loading is more detrimental to stress and strain distribution than axial load. Stress fields were more efficiently distributed by squared thread implants

Geology and micromammals of the Serra-1 site (Tabernas Basin, Betic Cordillera)

A chronology is given for the alluvial fan deposits in the Tabernas Basin (Internal Zone, Betic Cordillera). Palaeontological and sedimentological data are used to establish a palaeoclimatic model for the Quaternary in southeastern Spain.La Cuenca de Tabernas está situada en la zona interna de la Cordillera Bética, se da una cronología para los depósitos formados por abanicos aluviales y se plantea a través de datos paleontológicos y sedimentológicos un modelo paleochmátlco para el Cuaternano en el sureste de España

Two step process for volatile fatty acid production from brewery spent grain: Hydrolysis and direct acidogenic fermentation using anaerobic granular sludge

Brewery spent grain (BSG) is an industrial waste stream with large potential for biorefining purposes. This work evaluated the production of volatile fatty acids (VFAs) by a two-step process using BSG as renewable feedstock by combining a single direct hydrolysis step (without removing the acid or potential inhibiting compounds) with an acidogenic fermentation step of the carbohydrate rich leachate. For the first step, a thermal diluted acid hydrolysis was carried (20 min at 121 °C), using eighteen different combinations in terms of total solid (TS) of BSG (4, 7 and 10 % w/w) and H2SO4 (0.0, 0.5, 1.0, 1.5, 2.0 and 3.0 % v/v). The 7.0 % TS of BSG and 1.5 % of H2SO4 combination was the most efficient in terms of total carbohydrate recovery (0.44 g of total carbohydrates per gram of TS). For the second step, an acidogenic batch fermentation of the hydrolysate was performed using anaerobic granular sludge at five different pH conditions (uncontrolled pH from an initial pH 7.0, and constant pH controlled at 4.5, 5.0, 6.0 and 8.0). The highest VFAs concentration was obtained at pH 6.0 and reached 16.89 (± 1.33) g COD/L, composed of mainly (99.5–99.8 %) acetate and butyrate

Preferential associated anomalies in 818 cases of microtia in South america

The etiology of microtia remains unknown in most cases. The identification of patterns of associated anomalies (i.e., other anomalies that occur with a given congenital anomaly in a higher than expected frequency), is a methodology that has been used for research into the etiology of birth defects. We conducted a study based on cases of microtia that were diagnosed from more than 5 million live (LB)- and stillbirths (SB) examined in hospitals participating in ECLAMC (Latin American Collaborative Study of Congenital Malformations) between 1967 and 2009. We identified 818 LB and SB with microtia and at least one additional non-related major congenital anomaly (cases) and 15,969 LB and SB with two or more unrelated major congenital anomalies except microtia (controls). A logistic regression analysis was performed to identify the congenital anomalies preferentially associated with microtia. Preferential associations were observed for 10 congenital anomalies, most of them in the craniofacial region, including facial asymmetry, choanal atresia, and eyelid colobomata. The analysis by type of microtia showed that for anomalies such as cleft lip and palate, macrostomia, and limb reduction defects, the frequency increased with the severity of the microtia. In contrast, for other anomalies the frequency tended to be the same across all types of microtia. Based on these results we will integrate data on the developmental pathways related to preferentially associated congenital anomalies for future studies investigating the etiology of microtia.Fil: Luquetti, Daniela V.. University of Washington; Estados Unidos. Seattle Children’s Research Institute; Estados UnidosFil: Cox, Thimoty C.. Monash University; Australia. University of Washington; Estados UnidosFil: López Camelo, Jorge Santiago. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. CEMIC-CONICET. Centro de Educaciones Médicas e Investigaciones Clínicas "Norberto Quirno". CEMIC-CONICET.; ArgentinaFil: Dutra, Maria da Graça. Instituto Oswaldo Cruz; BrasilFil: Cunningham, Michael L.. University of Washington; Estados Unidos. Seattle Children’s Research Institute; Estados UnidosFil: Castilla, Eduardo Enrique. Centro de Educación Médica e Investigaciones Clínicas “Norberto Quirno”; Argentina. Instituto Oswaldo Cruz; Brasil. Instituto Nacional de Genética Médica Populacional; Brasi