341 research outputs found

    Temperature dependence of the magnetization processes in Co/Al oxide/Permalloy trilayers

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    The magnetization process of Co/Al oxide/Py trilayers and its evolution with the temperature have been analyzed. The particular behavior of the Co layers, including the shift of the hysteresis loops and a coercivity increase with the decrease of temperature, is related with the apparition of a CoO layer at the Co/Al-oxide interface

    Reconocimiento del locutor en telefonia: actividades del proyecto europeo COST 250

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    El objetivo de esta comunicación es presentar las actividades realizadas desde noviembre de 1994 dentro del proyecto “Speaker Recognition in Telephony”, financiado por la Comunidad Europea en el marco del programa “European Cooperation in the Field of Scientific and Technical Research” (COST), con referencia COST250. Los países participantes en el proyecto COST250 son Bélgica, Dinamarca, Eslovenia, España, Francia, Grecia, Inglaterra, Irlanda, Italia, Holanda, Portugal, Suecia, Suiza y Turquía.Peer ReviewedPostprint (published version

    First record of the mermithid nematode worm Isomermis lairdi parasitizing black flies in Spain

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    Funding Information: The authors declare that they have no conflicts of interest. We acknowledge the bioinformatics infrastructure of the Global Health and Tropical Medicine Center, which is funded through Fundação para a Ciência e a Tecnologia contract UID/04413/2020. Publisher Copyright: © 2022 Elsevier B.V.Mermithid nematodes are considered a promising biological control agent to reduce the population density of different blood-feeding vectors, i.e. black flies (Diptera: Simuliidae), which are important pests of medical and veterinary interest worldwide. Immature larvae of black flies were collected in a rill from La Rioja (Northern Spain) in the summer of 2016. Isomermis lairdi Mondet, Poinar & Bernadou, 1977 (Nematoda: Mermithidae) was found parasitizing eleven specimens of Simulium cryophilum s.l. (Rubtsov, 1959) (prevalence of 52%), which represent the first record of this nematode for Spain and the second for Europe. The confirmation of the nematode and the black fly species was carried out by both morphological and molecular approaches using the 18S ribosomal RNA and the cytochrome c oxidase subunit I genes. Phylogenetic analyses indicated that the collected specimens were Isomermis lairdi (99.4–99.9% identity with homologues from Africa) with a sequence divergence of 0.2%. The role of Isomermis lairdi as an alternative tool in the biological control of black flies in Spain should be further explored.publishersversionpublishe

    Proyecto PREDIRCAM 2. Análisis preliminar de uso y valoración de la plataforma

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    En la actualidad, la prevalencia de las enfermedades no transmisibles (Non-communicable diseases NCD) y la cantidad de muertes causadas por éstas es muy elevada, en su mayoría, consecuencia del envejecimiento de la población, el aumento de la obesidad y los hábitos de vida sedentarios. En este trabajo se describen el funcionamiento y los resultados preliminares del proyecto Predircam 2, destinado al desarrollo y validación de una plataforma inteligente de tecnologías biomédicas para la monitorización, prevención y tratamiento personalizados del sobrepeso, la obesidad y la prevención de enfermedades asociadas como la diabetes, hipertensión arterial o alteraciones del metabolismo lipídico. El objetivo de este trabajo es presentar los resultados preliminares del análisis del uso de la plataforma, la evaluación de la usabilidad y la valoración de la atención recibida por los pacientes en relación a los profesionales sanitarios

    Effects of transcranial static magnetic field stimulation over the left dorsolateral prefrontal cortex on random number generation

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    OBJECTIVE: Focal application of transcranial static magnetic field stimulation (tSMS) is a neuromodulation technique, with predominantly inhibitory effects when applied to the motor, somatosensory or visual cortex. Whether this approach can also transiently interact with dorsolateral prefrontal cortex (DLPFC) function remains unclear. The suppression of habitual or competitive responses is one of the core executive functions linked to DLPFC function. This study aimed to assess the impact of tSMS on the prefrontal contributions to inhibitory control and response selection by means of a RNG task. METHODS: We applied 20 min of tSMS over the left DLPFC of healthy subjects, using a real/sham cross-over design, during performance of a RNG task. We used an index of randomness calculated with the measures of entropy and correlation to assess the impact of stimulation on DLPFC function. RESULTS: The randomness index of the sequences generated during the tSMS intervention was significantly higher compared to those produced in the sham condition. CONCLUSIONS: Our results indicate that application of tSMS transiently modulates specific functional brain networks in DLPFC, which indicate a potential use of tSMS for treatment of neuropsychiatric disorders. SIGNIFICANCE: This study provides evidence for the capacity of tSMS for modulating DLPFC function

    Assessing microplastic ingestion and occurrence of bisphenols and phthalates in bivalves, fish and holothurians from a Mediterranean marine protected area

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    Microplastic (MP) ingestion, along with accumulated plasticizers such as bisphenol A (BPA), bisphenol F (BPF), and bisphenol S (BPS), and phthalates represented by diethyl phthalate (DEP), dibutyl phthalate (DBP) and bis (2-ethylhexyl) phthalate (DEHP), were quantified in bivalves, fish, and holothurians collected from a coastal pristine area at the western Mediterranean Sea. MP ingestion in sediment-feeders holothurians (mean value 12.67 ± 7.31 MPs/individual) was statistically higher than ingestion in bivalves and fish (mean 4.83 ± 5.35 and 3 ± 4.44 MPs/individual, respectively). The main ingested polymers were polyethylene, polypropylene, and polystyrene. The levels of BPS, BPF, and DEHP were highest in bivalves' soft tissue; BPA and DBP had the highest levels in the holothurians’ muscle. In addition, the levels of all plasticizers assessed were lowest in fish muscle; only BPA levels in fish were higher than in bivalves, with intermediate values between those of bivalves and holothurians. This study provides data on exposure to MPs and plasticizers of different species inhabiting Cabrera Marine Protected Area (MPA) and highlights the differences in MP ingestion and levels of plasticizers between species with different ecological characteristics and feeding strategies.En prensa3,39

    LEARNING OF THE OBJECT ORIENTED PARADIGM THROUGH INTERACTIVE VIDEO-GAMES DEVELOPMENT

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    Abstract The Object Orientation Paradigm (OOP) is more than Object Oriented languages. Learning the syntax of a language as C++ or Java is a relatively easy task compared with the understanding of the principles of OO Modeling and Design (OOD), which require a high ability of abstract reasoning. Moreover, it is not enough to teach the artifacts of Computer Aided Software Engineering (CASE) as the Unified Modeling Language (UML) if those principles are not properly understood. We wanted to engage the students in a motivating framework, so both the principles of OOD are properly acquired and put in practice with CASE and programming tools. We found the ideal framework in the development of videogames. Most students are familiar with (even attracted by) them. The existence of powerful yet simple 3D graphical libraries as OpenGL and the portable Window Manager (GLUT), makes very easy the development of quite attractive 3D applications, so the real effort can be done in the OOP. There are two types of games: those with physical simulations (first person shooters, car race, arcade games) and those with logical or reasoning (chess, 4 on a line, etc). Though the second type is interesting, physical systems can be more easily understood and modeled under OOP, because the software and design objects have an equivalent counterpart in the real world. Furthermore physical systems have the added benefit of involving kinematics, dynamics, math, and other disciplines very interesting for the engineering student. At Universidad Politecnica de Madrid, we teach Industrial Informatics which covers both the topics of C++ programming and OOP, starting from a basic knowledge of C language. The subject is taught with 3 hours of C++ theory, 2 hours of OOP theory and 2 hours of practice per week, along a semester, plus a compulsory assignment to be accomplished by the students. We decided to propose the development of a video-game to be carried out along the semester, by groups consisting of two students. Taking into account the required effort, we also decide to restructure the subject around this idea. The practical lessons have been completely modified, leading the student from one practical lesson to the next one in an incremental development of a typical arcade videogame: Pang, in which a player shoots to balls bouncing around the screen. Our focus is the OOP: the application is iteratively built following OOP principles: object creation and destruction, object interaction, relations between classes, GRASP and GOF software patterns, etc. CASE tools and UML are constantly used in this process, in order to support the ideas that motivate our final implementation. The theory and tutorial hours have been also affected: The tutorial time has highly increased, basically overwhelming our capacity. This fact also contributes to the actual understanding of the subject. The theory lessons find the support on the video-games development and practical lessons, making easier for the students to understand the abstract ideas explained in class. We are convinced about the effectiveness of our approach. The motivation of the students has become clearly visible, both in the tutorial lessons and in the high quality of the developed games. The students' grades have clearly improved, not only because of the contribution of the good grades of the game assignment, but also because the understanding of the concepts and the increase of hours dedicated to practical developments

    NEXT-100 Technical Design Report (TDR). Executive Summary

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    In this Technical Design Report (TDR) we describe the NEXT-100 detector that will search for neutrinoless double beta decay (bbonu) in Xe-136 at the Laboratorio Subterraneo de Canfranc (LSC), in Spain. The document formalizes the design presented in our Conceptual Design Report (CDR): an electroluminescence time projection chamber, with separate readout planes for calorimetry and tracking, located, respectively, behind cathode and anode. The detector is designed to hold a maximum of about 150 kg of xenon at 15 bar, or 100 kg at 10 bar. This option builds in the capability to increase the total isotope mass by 50% while keeping the operating pressure at a manageable level. The readout plane performing the energy measurement is composed of Hamamatsu R11410-10 photomultipliers, specially designed for operation in low-background, xenon-based detectors. Each individual PMT will be isolated from the gas by an individual, pressure resistant enclosure and will be coupled to the sensitive volume through a sapphire window. The tracking plane consists in an array of Hamamatsu S10362-11-050P MPPCs used as tracking pixels. They will be arranged in square boards holding 64 sensors (8 times8) with a 1-cm pitch. The inner walls of the TPC, the sapphire windows and the boards holding the MPPCs will be coated with tetraphenyl butadiene (TPB), a wavelength shifter, to improve the light collection.Comment: 32 pages, 22 figures, 5 table
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