Genomic insights into aquimarina sp. strain EL33, a bacterial symbiont of the gorgonian coral eunicella labiata.

To address the metabolic potential of symbiotic Aquimarina spp., we report here the genome sequence of Aquimarina sp. strain EL33, a bacterium isolated from the gorgonian coral Eunicella labiata This first-described (to our knowledge) animal-associated Aquimarina genome possesses a sophisticated repertoire of genes involved in drug/antibiotic resistance and biosynthesis

Medidas de absorción debida a los aerosoles en la estación subártica ALOMAR

The global study of atmospheric aerosol is one of the key factors in regards to climate change and those effects. Over the last 4 years a strong research work on aerosols properties characterization have been carried out into the Atmospheric Optics Group of the University of Valladolid (GOA-UVa) in Spain. We present the results about aerosol absorption coefficient measurements with two different techniques: the “integrating sphere photometer” and the particle soot absorption photometer (PSAP, Radiance Research). This data was acquired into the summer campaign 2008, made at north of Norway, like a result of the participation in-situ of GOA in the POLARCAT project, lead by the Norwegian Institute for Air Research, and included in the Fourth International Polar Year. Both methods are filter based and provide measurements that could be combined with optical column measurements for a better characterization of local aerosol. It contributes especially to the investigation of pollution events and to establishment the effects of the population over any local aerosol climatology. Based on this research background and the affordable and reliable instrumentation described in this work, the research can continue in Colombia in close collaborations with Spanish research groups.El estudio de los aerosoles atmosféricos a nivel mundial, es uno de los factores clave para entender el cambio climático y sus efectos. En los últimos 4 años, el Grupo de Óptica Atmosférica de la Universidad de Valladolid (GOA-UVa, España), ha venido realizando un importante trabajo de investigación respecto de la caracterización de las propiedades de los aerosoles. En este trabajo se presentan los resultados de las mediciones del coeficiente de absorción debida a los aerosoles con dos técnicas distintas: el fotómetro de esfera integrante y el fotómetro de absorción PSAP (Radiance Research). Estos datos fueron obtenidos durante la campaña de verano 2008 realizada al norte de Noruega, como resultado de la participación del GOA-UVa en el proyecto POLARCAT, dirigido por el Instituto Noruego para la investigación del aire y que está incluido en el cuarto año Polar Internacional. Los dos métodos utilizados están basados en las medidas sobre filtros y proporcionan medidas in situ que pueden ser combinadas con medidas sobre la columna atmosférica, para una mejor caracterización de los aerosoles locales. Este estudio contribuye especialmente a la investigación de los eventos de polución y en el establecimiento de los efectos de la población sobre la climatología local de aerosoles. Teniendo como base estos antecedentes de investigación y, la posibilidad de adquirir la asequible y fiable instrumentación descrita en este trabajo, la investigación puede continuar en Colombia en estrecha colaboración con los grupos de investigación españoles.info:eu-repo/semantics/publishedVersio

Remote inspection with multi-copters, radiological sensors and SLAM techniques

Activated material can be found in different scenarios, such as in nuclear reactor facilities or medical facilities (e.g. in positron emission tomography commonly known as PET scanning). In addition, there are unexpected scenarios resulting from possible accidents, or where dangerous material is hidden for terrorism attacks using nuclear weapons. Thus, a technological solution is important to cope with fast and reliable remote inspection. The multi-copter is a common type of Unmanned Aerial Vehicle (UAV) that provides the ability to perform a first radiological inspection in the described scenarios. The paper proposes a solution with a multi-copter equipped with on-board sensors to perform a 3D reconstruction and a radiological mapping of the scenario. A depth camera and a Geiger-Müler counter are the used sensors. The inspection is performed in two steps: i) a 3D reconstruction of the environment and ii) radiation activity inference to localise and quantify sources of radiation. Experimental results were achieved with real 3D data and simulated radiation activity. Experimental tests with real sources of radiation are planned in the next iteration of the work

Uma proposta de formação em serviço de professores em interculturalidade para acompanhar estudantes imigrantes

O quadro teórico desta contribuição baseia-se em estudos de migrações, no paradigma das novas mobilidades, nos contributos da educação intercultural crítica e do multiculturalismo, e na aprendizagem colaborativa. Este texto discute o aumento da migração e da diversidade cultural e consequente o desenvolvimento da educação intercultural no contexto espanhol. Esta situação representa o grande desafio da formação de professores para a promoção de uma educação intercultural inclusiva e crítica. O texto está estruturado em torno das contribuições do projeto europeu Quammelot, que desenvolveu pesquisa, intervenção, formação e boas práticas sobre inclusão educacional e social de estudantes imigrantes e Menores Estrangeiros Desacompanhados, com um foco específico no sistema educacional, na faixa etária de 12 a 18 anos, e nas relações entre escolas, população imigrante e território. O artigo oferece uma revisão da literatura sobre a inclusão de estudantes imigrantes e menores imigrantes nas escolas secundárias. Posteriormente, é apresentada a metodologia inovadora do projeto, descrevendo o curso online destinado aos professores do ensino médio. Finalmente, são comentadas as contribuições do projeto sobre cooperação transnacional, inovação na educação formal, melhoria da formação de professores e visibilidade das necessidades dos atores educacionais sobre inclusão e diversidade

A search for ultra-high-energy photons at the Pierre Auger Observatory exploiting air-shower universality

The Pierre Auger Observatory is the most sensitive detector to primary photons with energies above ∼0.2 EeV. It measures extensive air showers using a hybrid technique that combines a fluorescence detector (FD) with a ground array of particle detectors (SD). The signatures of a photon-induced air shower are a larger atmospheric depth at the shower maximum (X$_{max}$) and a steeper lateral distribution function, along with a lower number of muons with respect to the bulk of hadron-induced background. Using observables measured by the FD and SD, three photon searches in different energy bands are performed. In particular, between threshold energies of 1-10 EeV, a new analysis technique has been developed by combining the FD-based measurement of X$_{max}$ with the SD signal through a parameter related to its muon content, derived from the universality of the air showers. This technique has led to a better photon/hadron separation and, consequently, to a higher search sensitivity, resulting in a tighter upper limit than before. The outcome of this new analysis is presented here, along with previous results in the energy ranges below 1 EeV and above 10 EeV. From the data collected by the Pierre Auger Observatory in about 15 years of operation, the most stringent constraints on the fraction of photons in the cosmic flux are set over almost three decades in energy

Study on multi-ELVES in the Pierre Auger Observatory

Since 2013, the four sites of the Fluorescence Detector (FD) of the Pierre Auger Observatory record ELVES with a dedicated trigger. These UV light emissions are correlated to distant lightning strikes. The length of recorded traces has been increased from 100 μs (2013), to 300 μs (2014-16), to 900 μs (2017-present), to progressively extend the observation of the light emission towards the vertical of the causative lightning and beyond. A large fraction of the observed events shows double ELVES within the time window, and, in some cases, even more complex structures are observed. The nature of the multi-ELVES is not completely understood but may be related to the different types of lightning in which they are originated. For example, it is known that Narrow Bipolar Events can produce double ELVES, and Energetic In-cloud Pulses, occurring between the main negative and upper positive charge layer of clouds, can induce double and even quadruple ELVES in the ionosphere. This report shows the seasonal and daily dependence of the time gap, amplitude ratio, and correlation between the pulse widths of the peaks in a sample of 1000+ multi-ELVES events recorded during the period 2014-20. The events have been compared with data from other satellite and ground-based sensing devices to study the correlation of their properties with lightning observables such as altitude and polarity

Extraction of the Muon Signals Recorded with the Surface Detector of the Pierre Auger Observatory Using Recurrent Neural Networks

We present a method based on the use of Recurrent Neural Networks to extract the muon component from the time traces registered with water-Cherenkov detector (WCD) stations of the Surface Detector of the Pierre Auger Observatory. The design of the WCDs does not allow to separate the contribution of muons to the time traces obtained from the WCDs from those of photons, electrons and positrons for all events. Separating the muon and electromagnetic components is crucial for the determination of the nature of the primary cosmic rays and properties of the hadronic interactions at ultra-high energies. We trained a neural network to extract the muon and the electromagnetic components from the WCD traces using a large set of simulated air showers, with around 450 000 simulated events. For training and evaluating the performance of the neural network, simulated events with energies between 1018.5, eV and 1020 eV and zenith angles below 60 degrees were used. We also study the performance of this method on experimental data of the Pierre Auger Observatory and show that our predicted muon lateral distributions agree with the parameterizations obtained by the AGASA collaboration