Analysis of the relationship between coastal development and the alteration of beach shorelines: a retrospective view based on spatial indicators

The construction of port infrastructures in urbanized coastal territories causes a great impact in the short and long term. The analysis of this impact is a very complex field due to the high number of variables involved. The criteria for analyzing these phenomena are usually based on the characteristics of the infrastructure to be built, but in the case of highly urbanized areas, there are other variables that are not normally taken into account. With the aim of giving an alternative approach to traditional analysis methods and relating the maximum number of possible variables, our study is given a multiparametric and retrospective approach based on GIS indicators. For this, the coastal area of the southeast of Spain is analyzed with the cartographic information that we have from the last 50 years. The changes suffered in the coastline caused by the construction of ports are analyzed in two dimensions and the statistical correlation of the different variables studied and the impact suffered on the coast are studied, such as the formation of tombolos and hemitombolos or salients, as well as coastal regression, even generation of sludge due to imbalances in sedimentary dynamics. The results can be used to enrich and improve the traditional analysis models for singular cases such as those studied

La Incidencia de las políticas gubernamentales en la tutela y conservación del derecho fundamental de un medio ambiente sano en la Zona Oriental, en el período de 2004-2010

Las incidencias de las políticas gubernamentales en la tutela y conservación del derecho fundamental a un medio ambiente sano es un tema de investigación que reviste trascendental importancia, debido a la velocidad con la que el medio ambiente se deteriora y a la urgente necesidad de hacer algo para contrarrestar dicha problemática. Para mejor comprensión de la temática de investigación se establecieron los objetivos de analizar el rol que tienen las instituciones que integran el Sistema Nacional de Gestión Ambiental en el desarrollo de políticas que tiendan a tutelar, proteger y conservar el derecho fundamental a un medio ambiente sano y desarrollar un análisis jurídico-doctrinario del principio constitucional de proporcionalidad en las categorías desarrollo económico y las políticas ambientales de sostenibilidad. Por medio de la investigación se ha podido determinar que para lograr que la prevención, la investigación, la sanción y la reparación a las violaciones del derecho fundamental a un medio ambiente sano sean efectivos, se requiere que el modelo del Estado Constitucional y Democrático de Derecho sea adoptado por los funcionarios y empleados públicos, con el propósito de hacer cumplir las disposiciones de las diferentes leyes que regulan el medio ambiente, marcando especial énfasis en que se cumpla con los términos y plazos procesales establecidos en las mismas. Además, deben tomar conciencia que son ellos los que en un primer momento deben asegurar el goce de un medio ambiente sano para todos, de la misma manera sólo cumpliendo con el cometido de la normativa internacional sobre medio ambiente, y del que tiene asidero Constitucional en el Art.144 relacionado con el Art.117 Constitución de la República podrá concretizarse una tutela legal y efectiva del derecho a un medio ambiente sano y eso lógicamente equilibrad

Coordinación vertical de la formación en Cálculo de Estructuras dentro del Grado en Ingeniería Civil: Desarrollo de aplicaciones interactivas para la docencia

Las nuevas tecnologías aplicadas a la enseñanza permiten la visualización de fenómenos físicos y su relación con la base matemática utilizada en la modelización de los mismos. En este trabajo se ha utilizado el programa Mathematica para realizar aplicaciones ilustrativas de distintos conceptos básicos para el cálculo de estructuras de ingeniería civil y edificación. Se han tratado temas como la reología, la plastificación de los materiales, la relación entre tensiones y deformaciones de los sólidos elásticos o la dinámica estructural, siempre desde un punto de vista teórico-práctico y tratando de mantener en todo momento un carácter interactivo que permita la participación activa de los estudiantes. Cada aplicación compagina los fundamentos teóricos y la influencia de los parámetros implicados, con la visualización en forma de gráfico animado de la función resultante

Removing lead from water with carboxylate dendrimers and magnetic nanoparticles modified with carboxylate dendrimers

Contamination of water with heavy metals as lead (Pb2+) is a relevant problematic issue. In this work, we have tested diferent types of dendritic materials for lead removal from water and further recovery. The systems employed are magnetic nanoparticles (MNP) modifed with monocarboxylate and dendritic carboxylate ligands, and they are compared to pristine MNP and carbosilane dendrimers. They are all efective at removing Pb2+, but the key variations are in their recyclability. The usage of a fltering membrane was required for dendrimers, which was signifcantly degraded by the acidic media. In terms of MNP, those that were covered by dendritic molecules were clearly less damaged in acidic media. Finally, isotherm analysis revealed that Pb2+ interacts diferently with unmodifed and modifed MNP.Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER¿BBN)Ministerio de Ciencia e InnovaciónComunidad de MadridUniversidad de Alcal

An overview of offshore wind energy resources in Europe under present and future climate

Long-term sustainable development of European offshore wind energy requires knowledge of the best places for installing offshore wind farms. To achieve this, a good knowledge of wind resources is needed, as well as knowledge of international, European, and national regulations regarding conflict management, marine environment conservation, biodiversity protection, licensing processes, and support regimes. Such a multidisciplinary approach could help to identify areas where wind resources are abundant and where conflicts with other interests are scarce, support measures are greater, and licensing processes are streamlined. An overview of offshore wind power studies at present, and of their future projections for the 21st century, allows for determining the optimal European locations to install or maintain offshore wind farms. Only northern Europe, the northwest portion of the Iberian Peninsula, the Gulf of Lyon, the Strait of Gibraltar, and the northwest coast of Turkey show no change or increase in wind power, revealing these locations as the most suitable for installing and maintaining offshore wind farms in the future. The installation of wind farms is subject to restrictions established under international law, European law, and the domestic legal framework of each EU member state. Europe is moving toward streamlining of licensing procedures, reducing subsidies, and implementing auction systems.Xunta de Galicia | Ref. ED431C 2017/64Xunta de Galicia | Ref. ED481A-2016/36Fundação para a Ciência e a Tecnologia | Ref. SFRH/BPD/118142/20

Occupational radiation exposure assessment during the management of [68Ga]Ga-DOTA-TOC

Background: Since it was first approved in Europe in 2016, the gallium-68 (68Ga) radiopharmaceutical [68Ga]Ga-DOTA-TOC has been widely used for imaging of somatostatin receptor (SSTR) positive tumours using positron emission tomography-computed tomography (PET/CT). Significant patient benefits have been reported, so its use is rapidly increasing. However, few studies have been published regarding occupational doses to nuclear medicine personnel handling this radiopharmaceutical, despite its manual usage at low distances from the skin and the beta-emission decay scheme, which may result in an increased absorbed dose to their hands. In this context, this study aims to analyse the occupational exposure during the administration of [68Ga]Ga-DOTA-TOC for PET/CT imaging. For this purpose, extremity, eye lens and whole-body dosimetry in terms of Hp(0.07), Hp(3) and Hp(10), respectively, was conducted on six workers with both thermoluminescent dosimeters, and personal electronic dosimeters. Results: The non-dominant hand is more exposed to radiation than the dominant hand, with the thumb and the index fingertip being the most exposed sites on this hand. Qualitative analysis showed that when no shielding is used during injection, doses increase significantly more in the dominant than in the non-dominant hand, so the use of shielding is strongly recommended. While wrist dosimeters may significantly underestimate doses to the hands, placing a ring dosimeter at the base of the ring or middle finger of the non-dominant hand may give a valuable estimation of maximum doses to the hands if at least a correction factor of 5 is applied. Personal equivalent doses for the eyes did not result in measurable values (i.e., above the lowest detection limit) for almost all workers. The extrapolated annual dose estimations showed that there is compliance with the annual dose limits during management of [68Ga]Ga-DOTA-TOC for diagnostics with PET in the hospital included in this study. Conclusions: Imaging with [68Ga]Ga-DOTA-TOC is a safe process for the workers performing the administration of the radiopharmaceutical, including intravenous injection to the patient and the pre- and post-activity control, as it is highly unlikely that annual dose limits will be exceeded if good working practices and shielding are used.Euratom research and training programme 2019?2020 under Grant Agree? ment N? 945196 (SINFONIA Projec

REDUCCIÓN DEL TIEMPO DE CICLO EN UN MOLDE DE INYECCIÓN DE PLÁSTICOS IMPLEMENTANDO SISTEMAS DE ENFRIAMIENTO CON SECCIÓN TRANSVERSAL CIRCULAR Y RECTANGULAR (CYCLE TIME REDUCTION IN A PLASTIC INJECTION MOLD BY IMPLEMENTING COOLING SYSTEMS WITH CIRCULAR AND RECTANGULAR CROSS SECTION)

El presente artículo muestra la importancia del diseño de los canales de enfriamiento del molde para obtener una reducción en el tiempo total del ciclo de inyección, mediante una comparación entre cuatro tipos diferentes de sistemas de enfriamiento. Dos con sección transversal circular, uno con canal recto (tipo I), y el otro canal sigue la trayectoria de la pieza moldeada (tipo II). En los dos restantes se propone un cambio en la sección transversal, uno con sección cuadrada y otro con sección rectangular, en ambos la distancia es la misma entre los canales de enfriamiento y la superficie de la cavidad del molde. La pieza moldeada presenta una geometría con curvaturas suaves para tener un cierto grado de complejidad. Los resultados muestran que el diseño del canal circular tipo II, reduce el tiempo de ciclo, presenta flujo de calor uniforme y la pieza inyectada presenta contracción volumétrica uniforme.Palabra(s) Clave(s): Canales,  Conductividad, Inyección, Molde, Tiempo. AbstractThe importance of the design of cooling channels to obtain a good quality in the molded part with a reduced cycle time is presented in this work by comparing among 4 types of cooling channels. Two of them with circular cross-section, one of these with straight channels (type I), and the other with the channels that follows the path of the molded part (type II). The last two have square and rectangular cross section each one, both with the same distance between the cooling channels and the surface of the mold cavity. The mold presents a geometry with smooth curvatures to introduce some complexity. The results show that the type II circular channel design, reduces the cycle time, have a uniform heat flow and the injected part presents uniform volumetric contraction.Keyboards: Channels, Conductivity, Injection, Mold, Time

Evaluación y mejora de la herramienta on-line DESweb para la enseñanza de bases de datos (2)

El objetivo es la herramienta DESweb de apoyo a la docencia virtual y presencial para la enseñanza de bases de datos relacionales (SQL) y deductivas (Datalog). Esta solicitud es continuación de un proyecto de la convocatoria anterior