1,724 research outputs found

    Z-Axis Meandering Patch Antenna and Fabrication Thereof

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    Apparatus and techniques described herein can include antenna configurations and related fabrication. For example, a Z-axis meandering antenna configuration can be fabri­cated, such as by forming a dielectric substrate extending in two dimensions and defining an undulating region extending out of a plane defined by the two dimensions; and forming at least one conductive region following a contour of the dielectric substrate including at least a portion of the undu­lating region. The at least one conductive region can follow the contour of the dielectric substrate, such as including a first conductive region on a first layer, and a second con­ductive region on another layer separate from the first conductive region of the first conductive layer

    Impact of binding to the multidrug resistance regulator protein LmrR on the photo-physics and -chemistry of photosensitizers

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    Light activated photosensitizers generate reactive oxygen species (ROS) that interfere with cellular components and can induce cell death, e.g., in photodynamic therapy (PDT). The effect of cellular components and especially proteins on the photochemistry and photophysics of the sensitizers is a key aspect in drug design and the correlating cellular response with the generation of specific ROS species. Here, we show the complex range of effects of binding of photosensitizer to a multidrug resistance protein, produced by bacteria, on the formers reactivity. We show that recruitment of drug like molecules by LmrR (Lactococcal multidrug resistance Regulator) modifies their photophysical properties and their capacity to induce oxidative stress especially in 1O2 generation, including rose bengal (RB), protoporphyrin IX (PpIX), bodipy, eosin Y (EY), riboflavin (RBF), and rhodamine 6G (Rh6G). The range of neutral and charged dyes with different exited redox potentials, are broadly representative of the dyes used in PDT.</p

    Cuidado seguro do recém-nascido premato com tubo endotraqueal uti neonatal

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    Introduction. Safe Care is the cause or consequence of nursing interventions. Patient safety is a topic of interest in recent years, however, to speak of the preterm newborn (RNPT) with endotracheal tube (ETT), is to confront a vulnerable population due to its biophysiological characteristics. The Neonatal Intensive Care Unit (NICU) represents a complex environment, in these scenarios it is important to know the factors that can contribute to "Safe Care" avoiding an adverse event (AD) and its repercussions for life. Objective: Describe and publicize aspects found around the world on the Safe Care of RNPT with TET. Development: A search was made in different databases: Pubmed, Scielo, VHL, LILACS, Elsevier, using (DeCs) / (MeSH), rescuing national and international articles, Spanish, English and  Portuguese, from 5 years to date , with titles related to the care of the newborn. Three items were explored: body position in the RNPT, nursing care omitted, adverse events (AEs) in the NICU. Conclusions: The respiratory function of RNPT with TET is optimized with the body position factor. The omitted care has been little studied in the neonatal area. The EAs that prevail are: those related to infusion therapy, thermoregulation, associated infections and unscheduled extubation (ENP). Safe Care must be approached in depth in order to issue specific recommendations for this vulnerable group of the population.Introducción. Cuidado seguro se define como causa o consecuencia de las intervenciones de enfermería. La seguridad en el paciente es un tema de interés en los últimos años, no obstante, hablar del recién nacido pretérmino (RNPT) con tuboendotraqueal (TET), es enfrentarse a una población vulnerable por sus características biofisiológicas. La Unidad de Cuidado Intensivo Neonatal (UCIN) representa un medio ambiente complejo, en estos escenarios es de importancia conocer los factores que pueden contribuir al “Cuidado Seguro” evitando unevento adverso(EA)y sus repercusiones para la vida. Objetivo: Describir y dar a conocer aspectos encontrados a nive mundial sobre el cuidado seguro al RNPT con TET. Desarrollo: Se realizó una búsqueda en distintas bases de datos: Pubmed, Scielo, BVS, LILACS, Elsevier, utilizando (DeCs)/ (MeSH), rescatando artículos nacionales e internacionales, idioma español, inglés y portugués, de 5 años a la fecha, con títulos relacionados al cuidado del neonato. Tres rubros fueron los explorados: posición corporal en el RNPT, cuidado de enfermería omitido, eventos adversos (EAs) en la UCIN. Conclusiones: La función respiratoria del RNPT con TET se optimiza con el factor posición corporal. El cuidado omitido ha sido poco estudiado en el área neonatal. Los EAs que prevalecen son: los relacionados a la terapia de infusión, termorregulación, infecciones asociadas y extubación no programada (ENP). El cuidado seguro debe ser abordado a profundidad a fin de emitirrecomendaciones específicas para este grupo vulnerable de la población.Introdução. Safe Care é a causa ou consequência das intervenções de enfermagem. A segurança do paciente é um tema de interesse nos últimos anos, no entanto, falar do recém-nascido pré-termo (RNPT) com tubo endotraqueal (TET) é confrontar uma população vulnerável devido às suas características biofisiológicas. A Unidade de Terapia Intensiva Neonatal (UTIN) representa um ambiente complexo, nesses cenários é importante conhecer os fatores que podem contribuir para o "Cuidado Seguro" evitando um evento adverso (DA) e suas repercussões para a vida. Objetivo: Descrever e divulgar aspectos encontrado em todo o mundo sobre o Cuidado Seguro do RNPT com o TET. Desenvolvimento: Pesquisa realizada em diferentes bases de dados: Pubmed, Scielo, BVS, LILACS, Elsevier, utilizando (DeCs) / (MeSH), resgatando artigos nacionais e internacionais, espanhol, inglês e português, a partir de 5 anos, com títulos relacionados ao cuidado do recém-nascido. Três itens foram explorados: posição corporal no RNPT, cuidados de enfermagem omitidos, eventos adversos (EAs) na UTIN. Conclusões: A função respiratória do RNPT com TET é otimizada com o fator de posição corporal. O cuidado omitido tem sido pouco estudado na área neonatal. Os EAs que prevalecem são: aqueles relacionados à terapia de infusão, termorregulação, infecções associadas e extubação não programada (ENP). Cuidados Seguros devem ser abordados em profundidade, a fim de emitir recomendações específicas para este grupo vulnerável da população

    Abrupt climate changes during Termination III in Southern Europe

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    The Late Quaternary glacial-interglacial transitions represent the highest amplitude climate changes over the last million years. Unraveling the sequence of events and feedbacks at Termination III (T-III), including potential abrupt climate reversals similar to those of the last Termination, has been particularly challenging due to the scarcity of well-dated records worldwide. Here, we present speleothem data from southern Europe covering the interval from 262.7 to 217.9 kyBP, including the transition from marine isotope stage (MIS) 8 to MIS 7e. High-resolution delta C-13, delta O-18, and Mg/Ca profiles reveal major millennial-scale changes in aridity manifested in changing water availability and vegetation productivity. uranium-thorium dates provide a solid chronology for two millennial-scale events (S8.1 and S8.2) which, compared with the last two terminations, has some common features with Heinrich 1 and Heinrich 2 in Termination I (T-I)

    Visual 3-D SLAM from UAVs

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    The aim of the paper is to present, test and discuss the implementation of Visual SLAM techniques to images taken from Unmanned Aerial Vehicles (UAVs) outdoors, in partially structured environments. Every issue of the whole process is discussed in order to obtain more accurate localization and mapping from UAVs flights. Firstly, the issues related to the visual features of objects in the scene, their distance to the UAV, and the related image acquisition system and their calibration are evaluated for improving the whole process. Other important, considered issues are related to the image processing techniques, such as interest point detection, the matching procedure and the scaling factor. The whole system has been tested using the COLIBRI mini UAV in partially structured environments. The results that have been obtained for localization, tested against the GPS information of the flights, show that Visual SLAM delivers reliable localization and mapping that makes it suitable for some outdoors applications when flying UAVs

    Targeted sequencing supports morphology and embryo features in resolving the classification of Cyperaceae tribe Fuireneae s.l.

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    Molecular phylogenetic studies based on Sanger sequences have shown that Cyperaceae tribe Fuireneae s.l. is paraphyletic. However, taxonomic sampling in these studies has been poor, topologies have been inconsistent, and support for the backbone of trees has been weak. Moreover, uncertainty still surrounds the morphological limits of Schoenoplectiella, a genus of mainly small, amphicarpic annuals that was recently segregated from Schoenoplectus. Consequently, despite ample evidence from molecular analyses that Fuireneae s.l. might consist of two to four tribal lineages, no taxonomic changes have yet been made. Here, we use the Angiosperms353 enrichment panel for targeted sequencing in order to: (1) clarify the relationships of Fuireneae s.l. with the related tribes Abildgaardieae, Eleocharideae and Cypereae; (2) define the limits of Fuireneae s.s., and (3) test the monophyly of Fuireneae s.l. genera with emphasis on Schoenoplectus and Schoenoplectiella. Using more than a third of Fuireneae s.l. diversity, our phylogenomic analyses strongly support six genera and four major Fuireneae s.l. clades that we recognise as tribes: Bolboschoeneae stat.nov., Fuireneae s.s., Schoenoplecteae, and Pseudoschoeneae tr.nov. These results are consistent with morphological, micromorphological (nutlet epidermal cell shape), and embryo differences detected for each tribe. At the generic level, most sub‐Saharan African perennials currently treated in Schoenoplectus are transferred to Schoenoplectiella. Our targeted sequencing results show that these species are nested in Schoenoplectiella, and their treatment here is consistent with micromorphological and embryo characters shared by all Schoenoplectiella species. Keys to recognised tribes and genera are provided

    Engineering conductive protein films through nanoscale self-assembly and gold nanoparticles doping

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    Protein-based materials are usually considered as insulators, although conductivity has been recently shown in proteins. This fact opens the door to develop new biocompatible conductive materials. While there are emerging efforts in this area, there is an open challenge related to the limited conductivity of protein-based systems. This work shows a novel approach to tune the charge transport properties of protein-based materials by using electron-dense AuNPs. Two strategies are combined in a unique way to generate the conductive solid films: (1) the controlled self-assembly of a protein building block; (2) the templating of AuNPs by the engineered building block. This bottom-up approach allows controlling the structure of the films and the distribution of the AuNPs within, leading to enhanced conductivity. This work illustrates a promising strategy for the development of effective hybrid protein-based bioelectrical materialsThis work was partially supported by the European Research Council ERC-CoG-648071-ProNANO, ERC-PoC-841063-NIMM, Agencia Estatal de Investigación, Spain (PID2019- 111649RB-I00; and MAT2017-88693-R), and the Basque Government (Elkartek KK-2017/00008), E.L-M thanks the Spanish Ministry of Science and Innovation for the FPI grant (BES-2017-079646). This work was performed under the Maria de Maeztu Units of Excellence Program from the Spanish State Research Agency – Grant No. MDM-2017-0720 (CIC biomaGUNE) and SEV-2016-0686 (IMDEA Nanociencia
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