¿Está afectando la actividad turística creciente a la distribución o al número de parejas reproductoras de una pequeña colonia de halcón de Eleonora?

Human disturbance is a common threat for species of conservation concern such as the Eleonora’s Falcon. This paper shows that the rise in tourist presence from 1992 to 2000 has not affected the overall number of breeding pairs or their productivity in a small archipelago of the western Mediterranean (Columbretes Islands). However, the increasing tourist activity has coincided with a shift in the degree of occupancy on two islands within the archipelago, favouring that with a lower human presence close to colonies. Several conservation actions are reported and suggested, aimed at both testing and preventing the role of human presence as a factor influencing long–term colony persistence and growth.Las perturbaciones de origen antrópico son un factor de amenaza común para especies vulnerables como el halcón de Eleonora. El presente artículo muestra que el incremento de la presencia humana en un archipiélago del Mediterráneo occidental (islas Columbretes), durante el periodo 1992–2000, no ha afectado ni al número de parejas nidificantes ni a su productividad. Sin embargo, dicho incremento de la actividad turística ha coincidido con un cambio en el nivel de ocupación de dos islas del archipiélago, favoreciendo a la isla menos frecuentada por embarcaciones turísticas. Se sugieren algunas medidas de gestión que pueden servir para comprobar si las visitas turísticas pueden influir en el mantenimiento y crecimiento de la colonia a largo plazo, así como para prevenir estos posibles efectos

Presència del gat domèstic, Felis silvestris catus (Schreber, 1775), i del gat serval, Felis silvestris, en un espai natural protegit: el cas del Parc Natural Serra de Mariola (sud-est espanyol)

Presencia del gato doméstico, Felis silvestris catus (Schreber, 1775), y del gato montés, Felis silvestris, en un espacio natural protegido: el caso del Parque Natural Serra de Mariola (sureste español) El principal objetivo de esta investigación es conocer aspectos ecológicos, de distribución e impactos del gato doméstico dentro de la sierra de Mariola. El área de estudio es un parque natural de 17.500 hectáreas situado en el sur del País Valenciano. Un mejor conocimiento de su distribución será de interés para la definición de medidas de gestión de fauna del parque. Utilizando técnicas de fototrampeo se recopilaron 29.941 imágenes con algún contacto animal. El 0,62% de las fotografías registradas son de gato doméstico, de manera que se ha detectado su presencia en 29 de las 63 cuadrículas (2 x 2 km) del Parque Natural Serra de Mariola (el 46,03%). El periodo de muestreo se prolongó desde enero hasta septiembre de 2010. Este estudio ha permitido integrar la información recopilada en el campo en bases de datos a fin de evaluar la presencia del gato doméstico en la sierra de Mariola. Datos publicados en GBIF (doi:10.15470/p7evig).Presence of domestic cat, Felis silvestris catus (Schreber, 1775), and wild cat, Felis silvestris, in a natural protected area: the case of Serra de Mariola Natural Park (SE of Spain)The main objective of this research was to determine the ecological aspects, distribution, and impact of domestic cat in the Serra de Mariola. The study area is a natural park of 17,500 hectares located in the south of the Valencia Community. Better knowledge of the distribution of this cat will help define management measures in the park. Using camera traps, we collected 29,941 images of animal contact. A total of 0.62% of these photographs were of domestic cat, the presence of which was detected in 29 of 63 grids (2 x 2 km) in Serra de Mariola Natural Park (46.03%). Sampling was performed from January to September 2010. The study allowed us to integrate the information collected in the field into databases and to evaluate the presence of domestic cat in the Serra de Mariola.Data published through GBIF (doi:10.15470/p7evig).El principal objectiu d’aquesta recerca és conèixer aspectes ecològics, de distribució i d’impactes del gat domèstic dins de la serra de Mariola. L’àrea d’estudi és un parc natural de 17.500 hectàrees situat al sud del País Valencià. Un millor coneixement de la distribució serà d’interès per a la definició de mesures de gestió de fauna del parc. Utilitzant tècniques de fototrampeig es van recopilar 29.941 imatges amb algun contacte animal. El 0,62% de les fotografies enregistrades són de gat domèstic, de manera que se n’ha detectat la presència en 29 de les 63 quadrícules (2 x 2 km) del Parc Natural de la Serra de Mariola (el 46,03%). El període de mostreig es va prolongar des de gener fins a setembre de 2010. Aquest estudi ha permès integrar la informació recopilada al camp en bases de dades per avaluar la presència del gat domèstic a la serra de Mariola. Dades publicades a GBIF (doi:10.15470/p7evig)

Llenando Escuelas: una experiencia de aprendizaje-servicio en el sur de Marruecos

A group of children and young people boarding at the Casa-Escuela Santiago Uno (a type of orphanage/Pious School) and students from different levels and areas of professional training, travelled to the South of Morocco to implement a development cooperation project entitled “Llenando Escuelas” (“Filling Schools”). The main aim was to empower the local population in educational and professional terms and basic services, paying special attention to the most disadvantaged population groups: women, children and young people. They used theoretical and practical knowledge they had acquired in the previous academic year: catering, manufacturing, gardening, welding, first aid, social integration, sociocultural animation, sports and circus activities. For two months they lived together in a school with their educators and together with local residents they helped refurbish the school, in addition to carrying out training, organizing leisure and free time activities and setting up and supplying a medical clinic. This was a service-learning experience in which an enriching socio-cultural exchange took place.Un grupo de niños y jóvenes residentes en la Casa Escuela Santiago Uno, estudiantes de distintos niveles y áreas de Formación Profesional, se desplazan hasta el Sur de Marruecos para implementar el proyecto de cooperación para el desarrollo Llenando Escuelas cuyo objetivo principal es empoderar a la población local en materia de educación, formación profesional y servicios básicos, con atención prioritaria a los grupos poblacionales más desfavorecidos -mujer, infancia y juventud-. Aplican los conocimientos teórico-prácticos adquiridos durante el curso anterior (hostelería, fabricación, jardinería, soldadura, primeros auxilios, integración social, animación sociocultural, actividades deportivas y circenses). Durante dos meses conviven en una escuela con sus educadores y junto a la población local llevan a cabo la rehabilitación del recinto escolar, además de realizar de manera transversal actividades formativas, de ocio y tiempo libre e instaurar y abastecer un dispensario médico. Supone una experiencia de aprendizaje-servicio en la que se produce un enriquecedor intercambio sociocultural

New combined PIC-MCC approach for fast simulation of a radio frequency discharge at low gas pressure

A new combined PIC-MCC approach is developed for accurate and fast simulation of a radio frequency discharge at low gas pressure and high density of plasma. Test calculations of transition between different modes of electron heating in a ccrf discharge in helium and argon show a good agreement with experimental data. We demonstrate high efficiency of the combined PIC-MCC algorithm, especially for the collisionless regime of electron heating.Comment: 6 paged, 8 figure

Accurate and Efficient Design of Double Post Substrate Integrated Waveguide Filters Using Simulators Based on Open Space Modal Expansions

© 2012 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.An Agressive Space Mapping (ASM) strategy for efficiently and accurately designing passive filters in substrate integrated waveguide (SIW) technology is presented and successfully validated for the double post topology. Full-wave simulators based on open space modal expansions are used in both the coarse and fine models of this strategy.Díaz Caballero, E.; Morro, JV.; Esteban González, H.; Boria Esbert, VE.; Belenguer Martínez, Á. (2012). Accurate and Efficient Design of Double Post Substrate Integrated Waveguide Filters Using Simulators Based on Open Space Modal Expansions. IEEE. doi:10.1109/APS.2012.6348982

Multilevel transition in empty substrate integrated waveguide

This paper is a postprint of a paper submitted to and accepted for publication in Electronics Letters and is subject to Institution of Engineering and Technology Copyright. The copy of record is available at the IET Digital Library.Empty substrate integrated waveguide (ESIW) is an improvement of the well-known substrate integrated waveguide. While maintaining the low cost, easy manufacturing, small size, and integration with other circuits in the same substrate, ESIW decreases the related losses by removing the dielectric substrate, thus rendering it more interesting for practical applications. A wide band transition has been already developed to connect ESIW to microstrip lines. Filters, couplers, and antennas have also been developed in ESIW. For multilevel configurations, where different ESIW devices are implemented in different stacked substrates, a transition is needed that connects ESIW lines in different substrate levels. A low reflection wideband transition is presented for connecting two stacked ESIW lines.This work was supported by the Ministerio de Economia y Competitividad, Spanish Goverment, under Research Projects TEC2013-47037-C05-3-R and TEC2013-47037-C05-1-R.Morro, JV.; Rodríguez Pérez, AM.; Belenguer Martínez, Á.; Esteban González, H.; Boria Esbert, VE. (2016). Multilevel transition in empty substrate integrated waveguide. Electronics Letters. 52(18):1543-1544. doi:10.1049/el.2016.2558S15431544521

Fracturas supracondíleas sobre prótesis total de rodilla

Presentamos 7 casos de fractura del extreme distal del fémur en pacientes con sustitución total de rodilla. El propósito del estudio consiste en valorar las distintas opciones terapéuticas y los resultados obtenidos a medio plazo. Los enfermos fueron tratados quirúrgicamente mediante un clavo intramedular u ortopédicamente con un sistema de tracción de Neufeld de una férula de tipo Q.T.B. El método de tratamiento se decidió en función del grado de desplazamiento de la fractura, tiempo transcurrido desde la misma y estado general del paciente. Todos alcanzaron un nivel de actividad similar al que poseían previo a la fractura.We present 7 cases of supracondylar fracture of the femur in patients with total knee arthroplaty. The purpose of this study was to asses the different options of treatment and their results at mid-term. Fractures were treated with an intramedular nail or with a Neufeld traction system followed by a Q.T.B. cast. The method of treatment depends on the grade of fracture displacement, period of time since the fracture and patient health. All o them reached similar level of activity like before the fracture

Hybrid mode matching and method of moments method for the full-wave analysis of arbitrarily shaped structures fed through canonical waveguides using only electric currents

A new hybrid mode matching and method of moments formulation based only on electric currents is presented in this paper. The use of only one equivalent current allows the introduction of a new set of unknowns. The chosen new unknowns are the weights related to the scattered modes that emerge from the ports to the waveguides that feed the problem. Applying this new formulation, the matrices that must be inverted are smaller and the generalized scattering matrix can be obtained directly from the solution of the resulting system of equations, so that no additional projection is needed to obtain the scattering parameters, as happens with traditional approaches with two equivalent currents. As a result, certain efficiency improvement is obtained, as can be seen when this technique is applied to the solution of H plane problems in rectangular waveguid

Evaluación de las prestaciones de filtros de orden elevado implementados con la nueva guía vacía integrada en sustrato

In the last years a great number of substrate integrated circuits has been developed. These new circuits are a compromise between the advantages of classical waveguide technologies, such as high quality factor and low losses, and the advantages of planar circuits, such as low cost and easy compact integration. Although their quality factor and losses are better than for planar circuits, these characteristics are worse than in the case of waveguides, mainly due to the presence of the dielectric substrate. In order to improve the performance of the integrated circuits, a new methodology for manufacturing empty waveguides, without dielectric substrate, but at the same time completely integrated in a planar substrate has been recently proposed. A wide band transition with return losses greater than 20 dB in the whole bandwith of the waveguide allows the integration of the empty waveguide into the planar substrate, so that the waveguide can be directly accessed with a microstrip line. Therefore a microwave circuit integrated in a planar substrate, but at the same time with a very high quality factor (measured quality factor is 4.5 times higher than for the same filter in SIW) and very low losses was successfully achieved. In this work the performance of this new technology is tested through the simulation and measurement of high order filters (8 and 9 cavities filters).Belenguer Martínez, Á.; Esteban González, H.; Boria Esbert, VE.; Morro, JV. (2014). Evaluación de las prestaciones de filtros de orden elevado implementados con la nueva guía vacía integrada en sustrato. Editorial Universitat Politècnica de València. http://hdl.handle.net/10251/78478

Multilevel transition in empty substrate integrated waveguide

Empty substrate integrated waveguide (ESIW) is an improvement of the well-known substrate integrated waveguide. While maintaining the low cost, easy manufacturing, small size, and integration with other circuits in the same substrate, ESIW decreases the related losses by removing the dielectric substrate, thus rendering it more interesting for practical applications. A wide band transition has been already developed to connect ESIW to microstrip lines. Filters, couplers, and antennas have also been developed in ESIW. For multilevel configurations, where different ESIW devices are implemented in different stacked substrates, a transition is needed that connects ESIW lines in different substrate levels. A low reflection wideband transition is presented for connecting two stacked ESIW lines