Estudio del potencial de reactivación de coladas de tierra estrechas mediante el cálculo de la resistencia lateral y el análisis del mecanismo de reactivación: aplicación a la colada de tierra de la Nou (Alt Berguedà)

Los problemas de estabilidad del Pre-pirineo están asociados a las facies Garummniense. En esta formación que aflora en una gran extensión del área de estudio en l'Alt Berguedà, se pueden apreciar movimientos de flujo de grandes dimensiones, tipo colada. El presente trabajo tiene como objetivo investigar el potencial de reactivación de una de estas coladas, concretamente la colada de tierra de La Nou. Para satisfacer los objetivos propuestos, se han realizado una serie de mediciones, tanto en campo como en laboratorio, con el fin de obtener los parámetros suficientes para poder realizar el análisis de estabilidad mediante el método de equilibrio límite. Es importante indicar que la colada de La Nou presenta algunas particularidades, como los tramos estrechos y encajados, y los cambios de dirección. Esto provoca esfuerzos de cizalla en los laterales de la colada que actúa como fuerza estabilizadora, conocido como resistencia lateral y se calcula a partir de K0. Para poder incluir dicho parámetro en el análisis de estabilidad, se ha utilizado el programa GEOSLOPE que, aunque este diseñado para realizar análisis en dos dimensiones y movimientos poco confinados, permite introducir la resistencia lateral, como una “cohesión aparente”. Para el análisis de estabilidad realizado sin resistencia lateral, los factores de seguridad obtenidos simulando varias situaciones de nivel freático son relativamente bajos, garantizado la seguridad de la colada únicamente cuando las condiciones de humedad son mínimas. Sin embargo, al introducir la resistencia lateral en el posterior análisis, se producen unos aumentos significativos en el factor de seguridad, pero la colada seguiría inestable para los casos en que las condiciones de humedad fueran elevadas

Sorption of the herbicide linuron by Layered Double Hydroxide

II Encuentro sobre nanociencia y nanotecnología de investigadores y tecnólogos de la Universidad de Córdoba. NANOUC

Experimental and Numerical Simulation Investigation on Deep Drawing Process of Inconel 718 with and without Intermediate Annealing Thermal Treatments

The aeronautical industry is moving from high-capacity large-airplane construction to low-capacity small-airplane construction. With the change in the production volume, there is a need for more e cient manufacturing processes, such as stamping/deep drawing. However, the streamlined shape and exotic materials of airplanes pose a challenge to accurate numerical simulation of the manufacturing processes. In the case of the Inconel 718 material, researchers previously proposed numerical models; however, these models failed to take account of some key parameters, such as the degradation of the elastic modulus and intermediate annealing thermal processes. The aim of the present study was to characterize the Inconel 718 material, with and without intermediate annealing thermal treatment (TT) and to propose a suitable model. To evaluate the accuracy of the proposed model, a U-drawing benchmark test was used

Incorporación de herbicidas en hidrotalcitas modificadas

III Encuentro sobre Nanociencia y Nanotecnología de Investigadores y Tecnólogos Andaluce

Nanopigmentos laminares: AO-10 en hidrotalcitas

III Encuentro sobre Nanociencia y Nanotecnología de Investigadores y Tecnólogos Andaluce

Hidroxidos dobles laminares como materiales adsorbentes de contaminantes en aguas

II Encuentro sobre nanociencia y nanotecnología de investigadores y tecnólogos de la Universidad de Córdoba. NANOUC

Ecodesign coupled with Life Cycle Assessment to reduce the environmental impacts of an industrial enzymatic cleaner

[EN] The application of life cycle assessment (LCA) through ecodesign strategies enables making informed choices on the sustainability of products and services. Accordingly, in this work we quantify the environmental impacts associated with the life cycle of an enzymatic multipurpose cleaner to provide guidance on how producers and consumers can boost the implementation of more sustainable production and consumption patterns. LCA methodology with primary data is applied. To enable future comparison, 1 kg of detergent in its container is used as a functional unit, and cradle-to-grave system boundaries are set according to the reference "detergents and cleaning products" Product Category Rules (PCR). The environmental impacts are grouped into upstream, core and downstream life cycle phases, and seven impact categories are analyzed. Regarding the upstream stage, the degreaser 3-butoxy-2-propanol has the larger environmental load in 4 of 7 categories analyzed. During the core stage, electricity, natural gas and road transport of raw materials are the main contributors, while road transport has the largest share in 6 of the 7 downstream impact categories. Considering a cradle-to-grave boundary, a CO2-eq footprint of 0.76 kg per kg of packaged detergent is obtained, where energy consumption and transportation are the main impact drivers. Five ecodesigned scenarios are proposed to lower the overall environmental footprint of the enzymatic cleaner, including the use of renewable energy, higher volume packaging, the use of recycled packaging, the use of renewable surfactants from vegetal origin instead of petrochemically derived ones and the change from road transport for distribution to railway transport are analyzed. Among the proposed new scenarios aimed lower the cradle-to-grave environmental impacts, enlarging packaging volume results the most effective choice, lowering the impacts by 8-38% (global warming reduction by 25%). On the contrary, the substitution of the petroleum-based surfactant by one based on palm kernel oil increases the impacts by 4-16%. Overall, using larger packaging and the adoption of railway transportation are the most effective measures to reduce the impacts. As the followed PCR does not take into account the impacts generated after the use phase, we encourage its extension to the complete life cycle so toxicity and biodegradability aspects can also be considered. Covering from the extraction of raw materials, to production, transport, use and end-of-life, this work may pave the path toward the adoption of responsible production and consumption patterns in the cleaning sector. (C) 2021 The Author(s). Published by Elsevier B.V. on behalf of Institution of Chemical Engineers.The authors are grateful for the support provided by Ihobe (Public Society of Environmental Management of the Basque Government) and the assistance provided through the Basque Government (IT-1365-19) and the University of the Basque Country (GIC18/22) grants. Authors are also thankful to A&B Laboratorios de Biotecnologia S.A.U. for collaborating with us and providing all the necessary primary data for this work

Impact of high power interference sources in planning and deployment of wireless sensor networks and devices in the 2.4 GHz frequency band in heterogeneous environments

In this work, the impact of radiofrequency radiation leakage from microwave ovens and its effect on 802.15.4 ZigBee-compliant wireless sensor networks operating in the 2.4 GHz Industrial Scientific Medical (ISM) band is analyzed. By means of a novel radioplanning approach, based on electromagnetic field simulation of a microwave oven and determination of equivalent radiation sources applied to an in-house developed 3D ray launching algorithm, estimation of the microwave oven's power leakage is obtained for the complete volume of an indoor scenario. The magnitude and the variable nature of the interference is analyzed and the impact in the radio link quality in operating wireless sensors is estimated and compared with radio channel measurements as well as packet measurements. The measurement results reveal the importance of selecting an adequate 802.15.4 channel, as well as the Wireless Sensor Network deployment strategy within this type of environment, in order to optimize energy consumption and increase the overall network performance. The proposed method enables one to estimate potential interference effects in devices operating within the 2.4 GHz band in the complete scenario, prior to wireless sensor network deployment, which can aid in achieving the most optimal network topology.This authors wish to thank funding provided by FASTER project, Department of Innovation, Government of Navarra, Spain as well as funding provided by the Spanish Government and EU FEDER funds from the Consolider ―Engineering Metamaterials‖ CSD2008-00066 project

Diacylglycerol is required for the formation of COPI vesicles in the Golgi-to-ER transport pathway

Diacylglycerol is necessary for trans-Golgi network (TGN) to cell surface transport, but its functional relevance in the early secretory pathway is unclear. Although depletion of diacylglycerol did not affect ER-to-Golgi transport, it led to a redistribution of the KDEL receptor to the Golgi, indicating that Golgi-to-ER transport was perturbed. Electron microscopy revealed an accumulation of COPI-coated membrane profiles close to the Golgi cisternae. Electron tomography showed that the majority of these membrane profiles originate from coated buds, indicating a block in membrane fission. Under these conditions the Golgi-associated pool of ARFGAP1 was reduced, but there was no effect on the binding of coatomer or the membrane fission protein CtBP3/BARS to the Golgi. The addition of 1,2-dioctanoyl-sn-glycerol or the diacylglycerol analogue phorbol 12,13-dibutyrate reversed the effects of endogenous diacylglycerol depletion. Our findings implicate diacylglycerol in the retrograde transport of proteins from Golgi to the ER and suggest that it plays a critical role at a late stage of COPI vesicle formation