A922 Sequential measurement of 1 hour creatinine clearance (1-CRCL) in critically ill patients at risk of acute kidney injury (AKI)

Meeting abstrac

Base de datos de abejas ibéricas

Las abejas son un grupo extremadamente diverso con más de 1000 especies descritas en la península ibérica. Además, son excelentes polinizadores y aportan numerosos servicios ecosistémicos fundamentales para la mayoría de ecosistemas terrestres. Debido a los diversos cambios ambientales inducidos por el ser humano, existen evidencias del declive de algunas de sus poblaciones para ciertas especies. Sin embargo, conocemos muy poco del estado de conservación de la mayoría de especies y de muchas de ellas ignoramos cuál es su distribución en la península ibérica. En este trabajo presentamos un esfuerzo colaborativo para crear una base de datos de ocurrencias de abejas que abarca la península ibérica e islas Baleares que permitirá resolver cuestiones como la distribución de las diferentes especies, preferencia de hábitat, fenología o tendencias históricas. En su versión actual, esta base de datos contiene un total de 87 684 registros de 923 especies recolectados entre 1830 y 2022, de los cuales un 87% presentan información georreferenciada. Para cada registro se incluye información relativa a la localidad de muestreo (89%), identificador y colector de la especie (64%), fecha de captura (54%) y planta donde se recolectó (20%). Creemos que esta base de datos es el punto de partida para conocer y conservar mejor la biodiversidad de abejas en la península ibérica e Islas Baleares. Se puede acceder a estos datos a través del siguiente enlace permanente: https://doi.org/10.5281/zenodo.6354502ABSTRACT: Bees are a diverse group with more than 1000 species known from the Iberian Peninsula. They have increasingly received special attention due to their important role as pollinators and providers of ecosystem services. In addition, various rapid human-induced environmental changes are leading to the decline of some of its populations. However, we know very little about the conservation status of most species and for many species, we hardly know their true distributions across the Iberian Peninsula. Here, we present a collaborative effort to collate and curate a database of Iberian bee occurrences to answer questions about their distribution, habitat preference, phenology, or historical trends. In total we have accumulated 87 684 records from the Iberian Peninsula and the Balearic Islands of 923 different species with 87% of georeferenced records collected between 1830 and 2022. In addition, each record has associated information such as the sampling location (89%), collector and person who identified the species (64%), date of the capture (54%) and plant species where the bees were captured (20%). We believe that this database is the starting point to better understand and conserve bee biodiversity in the Iberian Peninsula. It can be accessed at: https://doi.org/10.5281/zenodo.6354502Esta base de datos se ha realizado con la ayuda de los proyectos EUCLIPO (Fundação para a Ciência e a Tecnologia, LISBOA-01-0145-FEDER-028360/EUCLIPO) y SAFEGUARD (ref. 101003476 H2020 -SFS-2019-2).info:eu-repo/semantics/publishedVersio

Gaia Focused Product Release: Radial velocity time series of long-period variables

Context. The third Gaia Data Release (DR3) provided photometric time series of more than 2 million long-period variable (LPV) candidates. Anticipating the publication of full radial-velocity data planned with Data Release 4, this Focused Product Release (FPR) provides radial-velocity time series for a selection of LPV candidates with high-quality observations. Aims. We describe the production and content of the Gaia catalog of LPV radial-velocity time series, and the methods used to compute the variability parameters published as part of the Gaia FPR. Methods. Starting from the DR3 catalog of LPV candidates, we applied several filters to construct a sample of sources with high-quality radial-velocity measurements. We modeled their radial-velocity and photometric time series to derive their periods and amplitudes, and further refined the sample by requiring compatibility between the radial-velocity period and at least one of the G, GBP, or GRP photometric periods. Results. The catalog includes radial-velocity time series and variability parameters for 9614 sources in the magnitude range 6 ≲ G/mag ≲ 14, including a flagged top-quality subsample of 6093 stars whose radial-velocity periods are fully compatible with the values derived from the G, GBP, and GRP photometric time series. The radial-velocity time series contain a mean of 24 measurements per source taken unevenly over a duration of about three years. We identify the great majority of the sources (88%) as genuine LPV candidates, with about half of them showing a pulsation period and the other half displaying a long secondary period. The remaining 12% of the catalog consists of candidate ellipsoidal binaries. Quality checks against radial velocities available in the literature show excellent agreement. We provide some illustrative examples and cautionary remarks. Conclusions. The publication of radial-velocity time series for almost ten thousand LPV candidates constitutes, by far, the largest such database available to date in the literature. The availability of simultaneous photometric measurements gives a unique added value to the Gaia catalog

Gaia Focused Product Release: Sources from Service Interface Function image analysis

Context. Gaia’s readout window strategy is challenged by very dense fields in the sky. Therefore, in addition to standard Gaia observations, full Sky Mapper (SM) images were recorded for nine selected regions in the sky. A new software pipeline exploits these Service Interface Function (SIF) images of crowded fields (CFs), making use of the availability of the full two-dimensional (2D) information. This new pipeline produced half a million additional Gaia sources in the region of the omega Centauri (ω Cen) cluster, which are published with this Focused Product Release. We discuss the dedicated SIF CF data reduction pipeline, validate its data products, and introduce their Gaia archive table. Aims. Our aim is to improve the completeness of the Gaia source inventory in a very dense region in the sky, ω Cen. Methods. An adapted version of Gaia’s Source Detection and Image Parameter Determination software located sources in the 2D SIF CF images. These source detections were clustered and assigned to new SIF CF or existing Gaia sources by Gaia s cross-match software. For the new sources, astrometry was calculated using the Astrometric Global Iterative Solution software, and photometry was obtained in the Gaia DR3 reference system. We validated the results by comparing them to the public Gaia DR3 catalogue and external Hubble Space Telescope data. Results. With this Focused Product Release, 526 587 new sources have been added to the Gaia catalogue in ω Cen. Apart from positions and brightnesses, the additional catalogue contains parallaxes and proper motions, but no meaningful colour information. While SIF CF source parameters generally have a lower precision than nominal Gaia sources, in the cluster centre they increase the depth of the combined catalogue by three magnitudes and improve the source density by a factor of ten. Conclusions. This first SIF CF data publication already adds great value to the Gaia catalogue. It demonstrates what to expect for the fourth Gaia catalogue, which will contain additional sources for all nine SIF CF regions

Gaia Focused Product Release: Asteroid orbital solution: Properties and assessment

Context. We report the exploitation of a sample of Solar System observations based on data from the third Gaia Data Release (Gaia DR3) of nearly 157 000 asteroids. It extends the epoch astrometric solution over the time coverage planned for the Gaia DR4, which is not expected before the end of 2025. This data set covers more than one full orbital period for the vast majority of these asteroids. The orbital solutions are derived from the Gaia data alone over a relatively short arc compared to the observation history of many of these asteroids. Aims. The work aims to produce orbital elements for a large set of asteroids based on 66 months of accurate astrometry provided by Gaia and to assess the accuracy of these orbital solutions with a comparison to the best available orbits derived from independent observations. A second validation is performed with accurate occultation timings. Methods. We processed the raw astrometric measurements of Gaia to obtain astrometric positions of moving objects with 1D sub-mas accuracy at the bright end. For each asteroid that we matched to the data, an orbit fitting was attempted in the form of the best fit of the initial conditions at the median epoch. The force model included Newtonian and relativistic accelerations to derive the observation equations, which were solved with a linear least-squares fit. Results. Orbits are provided in the form of state vectors in the International Celestial Reference Frame for 156 764 asteroids, including near-Earth objects, main-belt asteroids, and Trojans. For the asteroids with the best observations, the (formal) relative uncertainty σa/a is better than 10−10. Results are compared to orbits available from the Jet Propulsion Laboratory and MPC. Their orbits are based on much longer data arcs, but from positions of lower quality. The relative differences in semi-major axes have a mean of 5 × 10−10 and a scatter of 5 × 10−9

Gaia Focused Product Release: Spatial distribution of two diffuse interstellar bands

Diffuse interstellar bands (DIBs) are absorption features seen in optical and infrared spectra of stars and extragalactic objects that are probably caused by large and complex molecules in the galactic interstellar medium (ISM). Here we investigate the Galactic distribution and properties of two DIBs identified in almost six million stellar spectra collected by the Gaia Radial Velocity Spectrometer. These measurements constitute a part of the Gaia Focused Product Release to be made public between the Gaia DR3 and DR4 data releases. In order to isolate the DIB signal from the stellar features in each individual spectrum, we identified a set of 160 000 spectra at high Galactic latitudes (|b| ⩾ 65°) covering a range of stellar parameters which we consider to be the DIB-free reference sample. Matching each target spectrum to its closest reference spectra in stellar parameter space allowed us to remove the stellar spectrum empirically, without reference to stellar models, leaving a set of six million ISM spectra. Using the star’s parallax and sky coordinates, we then allocated each ISM spectrum to a voxel (VOlume piXEL) on a contiguous three-dimensional grid with an angular size of 1.8° (level 5 HEALPix) and 29 unequally sized distance bins. Identifying the two DIBs at 862.1 nm (λ862.1) and 864.8 nm (λ864.8) in the stacked spectra, we modelled their shapes and report the depth, central wavelength, width, and equivalent width (EW) for each, along with confidence bounds on these measurements. We then explored the properties and distributions of these quantities and compared them with similar measurements from other surveys. Our main results are as follows: (1) the strength and spatial distribution of the DIB λ862.1 are very consistent with what was found in Gaia DR3, but for this work we attained a higher signal-to-noise ratio in the stacked spectra to larger distances, which allowed us to trace DIBs in the outer spiral arm and beyond the Scutum–Centaurus spiral arm; (2) we produced an all-sky map below ±65° of Galactic latitude to ~4000 pc of both DIB features and their correlations; (3) we detected the signals of DIB λ862.1 inside the Local Bubble (≲200 pc); and (4) there is a reasonable correlation with the dust reddening found from stellar absorption and EWs of both DIBs with a correlation coefficient of 0.90 for λ862.1 and 0.77 for λ864.8

Estimación del Riesgo Cardiovascular Global en una población del Área de Salud Mártires del Corynthia. La Habana, Cuba

Introducción: Las Enfermedades Cardiovasculares constituyen la primera causa de muerte en Cuba. Para evaluar el riesgo de padecerlas se han creado múltiples tablas de riesgo; una de ellas es la propuesta recientemente por la Organización Mundial de la Salud. (OMS)Objetivo: Determinar el Riesgo Cardiovascular Global en una población del Área de Salud Mártires del Corynthia del municipio Plaza de la Revolución, Ciudad Habana.Métodos: Estudio descriptivo transversal, en una muestra de población de 40 a 70 años. Se estudiaron 1287 personas escogidas al azar, mediante un muestreo por conglomerados bietápico, y para la selección de los individuos muestreo aleatorio simple. Variables utilizadas: edad, sexo, nivel educacional, ocupación tabaquismo, presencia de diabetes mellitus, obesidad, presión arterial, triglicéridos y colesterol sérico. Las medidas de resumen utilizadas fueron los porcentajes.Resultados: Se utilizó el calificador de riesgo de la OMS. Clasificaron como bajo riesgo el 93,6% de los individuos; moderado riesgo el 4 %; alto riesgo 1,2%; muy alto riesgo el 0,6 % y en muy muy alto riego el 0,5 %. Este riesgo aumentado predominó en hombres y aumentó con la edad. La prevalencia de factores de riesgo encontrada en orden decreciente fue: hipertrigliceridemia, hipertensión arterial, hábito de fumar, obesidad, hipercolesterolemia y diabetes mellitus.Conclusión: El bajo nivel de Riesgo Cardiovascular Global en esta población pudiera estar determinado por el instrumento de medición utilizado el cual subestima el riesgo real de nuestra población.Palabras clave: Riesgo Cardiovascular Global, Tablas de riesgo

Estimación del Riesgo Cardiovascular Global en una población del Área de Salud Mártires del Corynthia. La Habana, Cuba

Introducción: Las Enfermedades Cardiovasculares constituyen la primera causa de muerte en Cuba. Para evaluar el riesgo de padecerlas se han creado múltiples tablas de riesgo; una de ellas es la propuesta recientemente por la Organización Mundial de la Salud. (OMS)Objetivo: Determinar el Riesgo Cardiovascular Global en una población del Área de Salud Mártires del Corynthia del municipio Plaza de la Revolución, Ciudad Habana.Métodos: Estudio descriptivo transversal, en una muestra de población de 40 a 70 años. Se estudiaron 1287 personas escogidas al azar, mediante un muestreo por conglomerados bietápico, y para la selección de los individuos muestreo aleatorio simple. Variables utilizadas: edad, sexo, nivel educacional, ocupación tabaquismo, presencia de diabetes mellitus, obesidad, presión arterial, triglicéridos y colesterol sérico. Las medidas de resumen utilizadas fueron los porcentajes.Resultados: Se utilizó el calificador de riesgo de la OMS. Clasificaron como bajo riesgo el 93,6% de los individuos; moderado riesgo el 4 %; alto riesgo 1,2%; muy alto riesgo el 0,6 % y en muy muy alto riego el 0,5 %. Este riesgo aumentado predominó en hombres y aumentó con la edad. La prevalencia de factores de riesgo encontrada en orden decreciente fue: hipertrigliceridemia, hipertensión arterial, hábito de fumar, obesidad, hipercolesterolemia y diabetes mellitus.Conclusión: El bajo nivel de Riesgo Cardiovascular Global en esta población pudiera estar determinado por el instrumento de medición utilizado el cual subestima el riesgo real de nuestra población.Palabras clave: Riesgo Cardiovascular Global, Tablas de riesgo

Estimación del Riesgo Cardiovascular Global en una población del Área de Salud Mártires del Corynthia. La Habana, Cuba

Introducción: Las Enfermedades Cardiovasculares constituyen la primera causa de muerte en Cuba. Para evaluar el riesgo de padecerlas se han creado múltiples tablas de riesgo; una de ellas es la propuesta recientemente por la Organización Mundial de la Salud. (OMS)Objetivo: Determinar el Riesgo Cardiovascular Global en una población del Área de Salud Mártires del Corynthia del municipio Plaza de la Revolución, Ciudad Habana.Métodos: Estudio descriptivo transversal, en una muestra de población de 40 a 70 años. Se estudiaron 1287 personas escogidas al azar, mediante un muestreo por conglomerados bietápico, y para la selección de los individuos muestreo aleatorio simple. Variables utilizadas: edad, sexo, nivel educacional, ocupación tabaquismo, presencia de diabetes mellitus, obesidad, presión arterial, triglicéridos y colesterol sérico. Las medidas de resumen utilizadas fueron los porcentajes.Resultados: Se utilizó el calificador de riesgo de la OMS. Clasificaron como bajo riesgo el 93,6% de los individuos; moderado riesgo el 4 %; alto riesgo 1,2%; muy alto riesgo el 0,6 % y en muy muy alto riego el 0,5 %. Este riesgo aumentado predominó en hombres y aumentó con la edad. La prevalencia de factores de riesgo encontrada en orden decreciente fue: hipertrigliceridemia, hipertensión arterial, hábito de fumar, obesidad, hipercolesterolemia y diabetes mellitus.Conclusión: El bajo nivel de Riesgo Cardiovascular Global en esta población pudiera estar determinado por el instrumento de medición utilizado el cual subestima el riesgo real de nuestra población.Palabras clave: Riesgo Cardiovascular Global, Tablas de riesgo