831 research outputs found

    Revista de Vertebrados de la Estación Biológica de Doñana

    Get PDF
    PĂĄgina 298 con error de impresiĂłnEstudio cariolĂłgico en dos especies de SerrĂĄnidos del MediterrĂĄneo (Peces: PerciformesRelaciones morfomĂ©tricas de Atherina boyeri Risso (Pisces: Atherinidae) de la laguna de Zoñar (CĂłrdoba, España)ContribuciĂłn al conocimiento de la biometrĂ­ay osteologĂ­a de Barbus barbus bocagei, Steindachner, 1866 (Pisces: CyprinidaeLa actividad de la salamandra, Salamandra salamandra (L.), en Galicia.Estudios sobre el sapo corredor (Bufo calamita) en el Sur de España.1. BiometrĂ­aEstudios sobre el sapo corredor (Bufo calamita) en el Sur de España. II. AlimentaciĂłnBiologĂ­a de la reproducciĂłn de Rana iberica Boulenger 1879 en zonas simpĂĄtridas con Rana temporaria Linneo, 1758Nuevos datos sobre la distribuciĂłn geogrĂĄfica de Lacerta monticola cantabrica Mertens, 1929. (Sauria, lacertidae).Datos sobre Lacerta monticola Boulenger, 1905 (Saurio: lacertidae)en el oeste del Sistema Central.Nueva especie de Anolis (lacertilia, Iguanidae) para CubaEtograma cuantificado del cortejo en Falco naumannOntogĂ©nesis del comportamiento predador en Falco naumanniContaminaciĂłn xenobiĂłtica del Parque Nacional de Doñana. 1. Residuos de insecticidas organoclorados, bifenilos policlorados y mercurio en anseriformes y gruiformesReproducciĂłn del crĂ­alo (Clamator glandarius) en Sierra Morena CentraNidificaciĂłn de Picus viridis en taludes de arcilla en Ramblas de Guadix (Granada)Comportamiento del calamĂłn Porphyrio porphyrio (Linnaeus, 1758) en Doñana, Marismas del GuadalquiviBiologĂ­a y ecologĂ­a de la malvasĂ­a (Oxyura leucocephala) en AndalucĂ­a.On the differential diet of Carnivora in islands:a method for analysing it and a particular case.Notas sobre la distribuciĂłn pasada y actual del meloncillo Herpestes ichneumon (L.) en la PenĂ­nsula IbĂ©ricaEstructuraciĂłn de las interacciones en una camada de lobos (CanĂ­s lupus)Nuevos datos sobre la distribuciĂłn del Cottus gobio L. (pisces, cottidae) en EspañaSobre la alimentaciĂłn de Callopistes maculatus (Reptilia,teiidaeObservaciĂłn de Lacerta lepida depredando un nido de Alectoris rufaNueva cita del galĂĄpago leproso Mauremys leprosa (Scheigger, 1812) en los pirineosPrimera cita de Psammodromus hispanicus (Fitzinger) para GaliciaSobre la presencia de Gallotia (=Lacerta) atlantica (Peters y Doria, 1882) en Gran CanariaNota sobre las Lacerta monticola Boulenger, 1905 de las zonas del norte de GaliciaPrimeras notas herpetolĂłgicas de la provincia de Soria.Datos sobre selecciĂłn de hĂĄbitat y ecologĂ­a alimenticia del porrĂłn pardo (Aythya nyroca)Probable nueva ĂĄrea de crĂ­a del pechiazul (Luscinia svecica cyanecula) en el sistema central. PerisPredaciĂłn de Falco peregrinus y Falco subbuteo sobre quirĂłpterosResultados de la producciĂłn de Oxyura leucocephala en el año 1981 en las lagunas de Zóñar y el rincĂłnAnĂĄlisis de la dieta de Tyto alba en un medio ĂĄrido antropĂłgeno de los alrededores de AlmerĂ­aÂżSon Eudocimus ruber y E. albus distintas especies?EL Estornino pinto (Sturnus vulgaris) en Canarias: nueva especie nidifiante en el archipiĂ©lagoDatos sobre la alimentaciĂłn otoñal del cĂĄrabo (Strix aluco) en la sierra de CĂĄdizObservaciĂłn primaveral de rapaces y otras aves en el pĂĄramo del estado de MĂ©rida (Venezuela).MurciĂ©lago hematĂłfago (Desmodus rotundus) parasitando a un chigĂŒire (Hidrochoerus hydrochaeris)Observaciones sobre la reproducciĂłn del zacatuche o teporinho Romerolagus diazi (Mammalia: lagomorpha)Estudio electroforĂ©tico de hemoglobinas y esterasas sanguĂ­neas en Rhinolophus ferrumequinum (Chiroptera: rhinolophidae) y de hemoglobinas en Tadaria taeniotis (chiroptera: molossidae)Peer reviewe

    RevisiĂłn y Control del Plan de Vigilancia Ambiental de las obras de dragado del Puerto de MaĂł

    Get PDF
    Se integra informaciĂłn hidrogrĂĄfica, geomorfolĂłgica, sedimentolĂłgica y biolĂłgica, para la caracterizaciĂłn de los ecosistemas marinos en el punto de vertido y ĂĄrea adyacente previa al inicio de las obras de dragado del Puerto de MaĂł.RESUMEN: En este documento se presentan los trabajos cientĂ­ficos realizados por el Instituto Español de OceanografĂ­a, dentro del Plan de Vigilancia Ambiental del dragado del Puerto de MaĂł (Menorca, Islas Baleares), para la caracterizaciĂłn de los ecosistema marino en el punto de vertido y ĂĄrea adyacente, previa al inicio de las obras. Se incluyen los resultados y las conclusiones de los estudios realizados por diversos grupos de investigaciĂłn, principalmente en Enero-Marzo 2014, en relaciĂłn al fondo marino, la hidrodinĂĄmica, las praderas de Posidonia oceanica y el molusco bivalvo Pinna nobilis, el macro-bentos de los fondos circalitorales blandos y los contaminantes en agua, sedimentos y biota, asĂ­ como en especies de interĂ©s comercial para el consumo humano. Este informe se contempla en el contrato entre la Autoridad Portuaria de Baleares y el Instituto Español de OceanografĂ­a, suscrito el 5 Febrero 2014, para los trabajos de asistencia tĂ©cnica para la revisiĂłn y control del Plan de Vigilancia Ambiental del dragado del Puerto de MaĂł.RESUM: En aquest document es presenten els treballs cientĂ­fics realitzats per l’Instituto Español de OceanografĂ­a, dins del Pla de VigilĂ ncia Ambiental del dragat del Port de MaĂł (Menorca, Illes Balears), per a la caracteritzaciĂł dels ecosistemes marins en el punt de vessament i Ă rea adjacent, prĂšvia a l’inici de les obres. S’inclouen els resultats i les conclusions del estudis realitzats per diversos grups de recerca, principalment durant Gener-Març 2014, en relaciĂł al fons marĂ­, la hidrodinĂ mica, les praderies de Posidonia oceanica i el mol‱lusc bivalve Pinna nobilis, el macro-bentos dels fons circalitorals tous i els contaminants en aigua, sediments i biota, aixĂ­ com en espĂšcies d’interĂšs comercial pel consum humĂ . Aquest informe es contempla en el contracte entre l’Autoritat PortuĂ ria de Balears i el Instituto Español de OceanografĂ­a, subscrit el 5 Febrer 2014, pels treballs d’assistĂšncia tĂšcnica per a la revisiĂł i control del Pla de VigilĂ ncia Ambiental del dragat de Port de MaĂł.ABSTRACT: This document presents the scientific actions developed by the Instituto Español de OceanografĂ­a within the Environmental Monitoring Plan of the works of dredging the Port of MaĂł (Minorca, Balearic Islands), for the characterization of the marine ecosystems in the point of discharge of dredged material and adjacent area, before the beginning of the dredging. The results and conclusions of the studies developed by several research groups, mainly in January-March 2014, in relation to the bottom, hydrodynamics, Posidonia oceanica meadows, and the bivalve mollusc Pinna nobilis, the macro-benthos of the circalittoral soft bottoms and the contaminants in water, sediments and biota, as well as in commercial species for human consumption, are included. This report is contemplated within the contract between the Autoridad Portuaria de Baleares and the Instituto Español de OceanografĂ­a, signed on 5 February 2014, for the technical assistance activities to review and control the Environmental Monitoring Plan of the works of dredging the Port of MaĂł.Autoridad Portuaria de Baleare

    Higher COVID-19 pneumonia risk associated with anti-IFN-α than with anti-IFN-ω auto-Abs in children

    Full text link
    We found that 19 (10.4%) of 183 unvaccinated children hospitalized for COVID-19 pneumonia had autoantibodies (auto-Abs) neutralizing type I IFNs (IFN-alpha 2 in 10 patients: IFN-alpha 2 only in three, IFN-alpha 2 plus IFN-omega in five, and IFN-alpha 2, IFN-omega plus IFN-beta in two; IFN-omega only in nine patients). Seven children (3.8%) had Abs neutralizing at least 10 ng/ml of one IFN, whereas the other 12 (6.6%) had Abs neutralizing only 100 pg/ml. The auto-Abs neutralized both unglycosylated and glycosylated IFNs. We also detected auto-Abs neutralizing 100 pg/ml IFN-alpha 2 in 4 of 2,267 uninfected children (0.2%) and auto-Abs neutralizing IFN-omega in 45 children (2%). The odds ratios (ORs) for life-threatening COVID-19 pneumonia were, therefore, higher for auto-Abs neutralizing IFN-alpha 2 only (OR [95% CI] = 67.6 [5.7-9,196.6]) than for auto-Abs neutralizing IFN-. only (OR [95% CI] = 2.6 [1.2-5.3]). ORs were also higher for auto-Abs neutralizing high concentrations (OR [95% CI] = 12.9 [4.6-35.9]) than for those neutralizing low concentrations (OR [95% CI] = 5.5 [3.1-9.6]) of IFN-omega and/or IFN-alpha 2

    New insights into the genetic etiology of Alzheimer's disease and related dementias

    Get PDF
    Characterization of the genetic landscape of Alzheimer's disease (AD) and related dementias (ADD) provides a unique opportunity for a better understanding of the associated pathophysiological processes. We performed a two-stage genome-wide association study totaling 111,326 clinically diagnosed/'proxy' AD cases and 677,663 controls. We found 75 risk loci, of which 42 were new at the time of analysis. Pathway enrichment analyses confirmed the involvement of amyloid/tau pathways and highlighted microglia implication. Gene prioritization in the new loci identified 31 genes that were suggestive of new genetically associated processes, including the tumor necrosis factor alpha pathway through the linear ubiquitin chain assembly complex. We also built a new genetic risk score associated with the risk of future AD/dementia or progression from mild cognitive impairment to AD/dementia. The improvement in prediction led to a 1.6- to 1.9-fold increase in AD risk from the lowest to the highest decile, in addition to effects of age and the APOE Δ4 allele

    An embedding technique to determine ττ backgrounds in proton-proton collision data

    Get PDF
    An embedding technique is presented to estimate standard model tau tau backgrounds from data with minimal simulation input. In the data, the muons are removed from reconstructed mu mu events and replaced with simulated tau leptons with the same kinematic properties. In this way, a set of hybrid events is obtained that does not rely on simulation except for the decay of the tau leptons. The challenges in describing the underlying event or the production of associated jets in the simulation are avoided. The technique described in this paper was developed for CMS. Its validation and the inherent uncertainties are also discussed. The demonstration of the performance of the technique is based on a sample of proton-proton collisions collected by CMS in 2017 at root s = 13 TeV corresponding to an integrated luminosity of 41.5 fb(-1).Peer reviewe

    Measurement of t(t)over-bar normalised multi-differential cross sections in pp collisions at root s=13 TeV, and simultaneous determination of the strong coupling strength, top quark pole mass, and parton distribution functions

    Get PDF
    Peer reviewe

    Measurement of nuclear modification factors of gamma(1S)), gamma(2S), and gamma(3S) mesons in PbPb collisions at root s(NN)=5.02 TeV

    Get PDF
    The cross sections for ϒ(1S), ϒ(2S), and ϒ(3S) production in lead-lead (PbPb) and proton-proton (pp) collisions at √sNN = 5.02 TeV have been measured using the CMS detector at the LHC. The nuclear modification factors, RAA, derived from the PbPb-to-pp ratio of yields for each state, are studied as functions of meson rapidity and transverse momentum, as well as PbPb collision centrality. The yields of all three states are found to be significantly suppressed, and compatible with a sequential ordering of the suppression, RAA(ϒ(1S)) > RAA(ϒ(2S)) > RAA(ϒ(3S)). The suppression of ϒ(1S) is larger than that seen at √sNN = 2.76 TeV, although the two are compatible within uncertainties. The upper limit on the RAA of ϒ(3S) integrated over pT, rapidity and centrality is 0.096 at 95% confidence level, which is the strongest suppression observed for a quarkonium state in heavy ion collisions to date. © 2019 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3.Peer reviewe

    Electroweak production of two jets in association with a Z boson in proton-proton collisions root s =13 TeV

    Get PDF
    A measurement of the electroweak (EW) production of two jets in association with a Z boson in proton-proton collisions at root s = 13 TeV is presented, based on data recorded in 2016 by the CMS experiment at the LHC corresponding to an integrated luminosity of 35.9 fb(-1). The measurement is performed in the lljj final state with l including electrons and muons, and the jets j corresponding to the quarks produced in the hard interaction. The measured cross section in a kinematic region defined by invariant masses m(ll) > 50 GeV, m(jj) > 120 GeV, and transverse momenta P-Tj > 25 GeV is sigma(EW) (lljj) = 534 +/- 20 (stat) fb (syst) fb, in agreement with leading-order standard model predictions. The final state is also used to perform a search for anomalous trilinear gauge couplings. No evidence is found and limits on anomalous trilinear gauge couplings associated with dimension-six operators are given in the framework of an effective field theory. The corresponding 95% confidence level intervals are -2.6 <cwww/Lambda(2) <2.6 TeV-2 and -8.4 <cw/Lambda(2) <10.1 TeV-2. The additional jet activity of events in a signal-enriched region is also studied, and the measurements are in agreement with predictions.Peer reviewe

    Search for dark matter in events with a leptoquark and missing transverse momentum in proton-proton collisions at 13 TeV

    Get PDF
    A search is presented for dark matter in proton-proton collisions at a center-of-mass energy of root s= 13 TeV using events with at least one high transverse momentum (p(T)) muon, at least one high-p(T) jet, and large missing transverse momentum. The data were collected with the CMS detector at the CERN LHC in 2016 and 2017, and correspond to an integrated luminosity of 77.4 fb(-1). In the examined scenario, a pair of scalar leptoquarks is assumed to be produced. One leptoquark decays to a muon and a jet while the other decays to dark matter and low-p(T) standard model particles. The signature for signal events would be significant missing transverse momentum from the dark matter in conjunction with a peak at the leptoquark mass in the invariant mass distribution of the highest p(T) muon and jet. The data are observed to be consistent with the background predicted by the standard model. For the first benchmark scenario considered, dark matter masses up to 500 GeV are excluded for leptoquark masses m(LQ) approximate to 1400 GeV, and up to 300 GeV for m(LQ) approximate to 1500 GeV. For the second benchmark scenario, dark matter masses up to 600 GeV are excluded for m(LQ) approximate to 1400 GeV. (C) 2019 The Author(s). Published by Elsevier B.V.Peer reviewe

    Measurement of the top quark forward-backward production asymmetry and the anomalous chromoelectric and chromomagnetic moments in pp collisions at √s = 13 TeV

    Get PDF
    Abstract The parton-level top quark (t) forward-backward asymmetry and the anomalous chromoelectric (d̂ t) and chromomagnetic (Ό̂ t) moments have been measured using LHC pp collisions at a center-of-mass energy of 13 TeV, collected in the CMS detector in a data sample corresponding to an integrated luminosity of 35.9 fb−1. The linearized variable AFB(1) is used to approximate the asymmetry. Candidate t t ÂŻ events decaying to a muon or electron and jets in final states with low and high Lorentz boosts are selected and reconstructed using a fit of the kinematic distributions of the decay products to those expected for t t ÂŻ final states. The values found for the parameters are AFB(1)=0.048−0.087+0.095(stat)−0.029+0.020(syst),Ό̂t=−0.024−0.009+0.013(stat)−0.011+0.016(syst), and a limit is placed on the magnitude of | d̂ t| &lt; 0.03 at 95% confidence level. [Figure not available: see fulltext.
    • 

    corecore