Conocer la experiencia de desarrollo de publicaciones científicas de alto impacto tanto en contenido técnico y diseño de publicación cómo en la organización del equipo editorial, de redacción y logístico para asegurar su funcionamiento eficiente

Comprender las implicancias de un modelo exitoso de gestión del proceso de internacionalización de la educación superior a través de la experiencia de la Universidad de Jaén (España).CONACYT - Consejo Nacional de Ciencia y TecnologíaPROCIENCI

Efecto prebiótico de dos fuentes de inulina en el crecimiento in vitro de Lactobacillus salivarius y Enterococcus faecium

Diarrhea in livestock species is controlled with antibiotics, but its inadequate use causes bacterial resistance. Lactic acid bacteria (LAB) in the intestinal microbiota have competitive exclusion against pathogens causing diarrhea, and inulin is a substrate for LAB. Therefore, the objective of this study was to determine the prebiotic effect of two inulin sources on in vitro growth of Lactobacillus salivarius (Ls) and Enterococcus faecium (Ef), with the use of Lactobacillus casei (Lc) as a positive control. In vitro incubations were performed at 37 °C, with glucose substitution by inulin of chicory (IAc) or agave (IAg) in MRS medium. The treatments (T) evaluated were T1: MRS-glucose+Lc; T2: MRS-IAc+Ls, T4: MRS-IAc+Ef, T5: MRS-IAg+Lc, T6: MRS-IAg+Ls and T7: MRS-IAg+Ef. The curve and the growth rate were determined by optical density (630 nm) at 0, 3, 6, 12, 24, 30, 36, 48, 54 and 60 h. A completely randomized design was used and the Tukey test for means comparison. MRS-IAg treatments showed higher (P<0.05) growth rates (0.51a, 0.50a and 0.50a h-1, T5, T6 and T7, respectively) and were similar to the positive control (T2) when grown in MRS- IAc (0.48a h-1). The positive control (T1) had a low growth rate (0.34b h-1) when the medium included glucose (MRS-glucose). pH during growth was different between treatments (P<0.05). Agave inulin favors the growth of probiotic bacteria such as Lactobacillus salivarius and Enterococcus faecium, and its prebiotic effect is better than chicory inulin.Las diarreas en especies pecuarias son controladas con antibióticos, pero su uso inadecuado causa problemas de resistencia bacteriana. Las bacterias ácido lácticas (BAL) en la microbiota intestinal ejercen exclusión competitiva contra patógenos causantes de diarreas, y la inulina es un sustrato para las BAL. Por lo tanto, el objetivo de este estudio fue determinar el efecto prebiótico de dos fuentes de inulina en el crecimiento in vitro de Lactobacillus salivarius (Ls) y Enterococcus faecium (Ef), con el uso de Lactobacillus casei (Lc) como control positivo. Las incubaciones in vitro se realizaron a 37 °C, con sustitución de glucosa por inulina de achicoria (IAc) o de agave (IAg) en el medio MRS. Los tratamientos (T) evaluados fueron T1: MRS-glucosa+Lc; T2: MRS-IAc+Lc, T3: MRS-IAc+Ls, T4: MRS-IAc+Ef, T5: MRS-IAg+Lc, T6: MRS-IAg+Ls y T7: MRS-IAg+Ef. La curva y la tasa de crecimiento se determinaron mediante densidad óptica (630 nm) a las 0, 3, 6, 12, 24, 30, 36, 48, 54 y 60 h. El diseño experimental fue completamente al azar, los datos se analizaron con PROC GLM (SAS) y la comparación de medias se realizó mediante la prueba de Tukey. Los tratamientos con MRS-IAg mostraron mayores (P<0.05) tasas de crecimiento (0.51a, 0.50a y 0.50a h-1, T5, T6 y T7, respectivamente) y resultaron similares al control positivo (T2) cuando creció en MRS-IAc (0.48a h-1). El pH durante el crecimiento fue diferente entre tratamientos (P<0.05). La inulina de agave favorece el crecimiento de bacterias probióticas como Lactobacillus salivarius y Enterococcus faecium, y su efecto prebiótico supera a la inulina de achicoria

Competencias socioeducativas del profesorado ante situaciones de crisis sanitaria (Caso COVID-19), en Paraguay.

Esta investigación tiene por finalidad conocer las implicaciones de la crisis generada por la COVID-19 en el profesorado y el alumnado de educación superior y cuál debe ser nuestra contribución como investigadores para la mejora de la situación.CONACYT - Consejo Nacional de Ciencia y TecnologíaPROCIENCI

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

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

Peer reviewe

Measurement of electroweak WZ boson production and search for new physics in WZ + two jets events in pp collisions at √s=13TeV

A measurement of WZ electroweak (EW) vector boson scattering is presented. The measurement is performed in the leptonic decay modes WZ→ℓνℓ′ℓ′, where ℓ,ℓ′=e,μ. The analysis is based on a data sample of proton-proton collisions at √s=13 TeV at the LHC collected with the CMS detector and corresponding to an integrated luminosity of 35.9 fb−1. The WZ plus two jet production cross section is measured in fiducial regions with enhanced contributions from EW production and found to be consistent with standard model predictions. The EW WZ production in association with two jets is measured with an observed (expected) significance of 2.2 (2.5) standard deviations. Constraints on charged Higgs boson production and on anomalous quartic gauge couplings in terms of dimension-eight effective field theory operators are also presented

Combined searches for the production of supersymmetric top quark partners in proton-proton collisions at root s=13 TeV

A combination of searches for top squark pair production using proton-proton collision data at a center-of-mass energy of 13 TeV at the CERN LHC, corresponding to an integrated luminosity of 137 fb(-1) collected by the CMS experiment, is presented. Signatures with at least 2 jets and large missing transverse momentum are categorized into events with 0, 1, or 2 leptons. New results for regions of parameter space where the kinematical properties of top squark pair production and top quark pair production are very similar are presented. Depending on themodel, the combined result excludes a top squarkmass up to 1325 GeV for amassless neutralino, and a neutralinomass up to 700 GeV for a top squarkmass of 1150 GeV. Top squarks with masses from 145 to 295 GeV, for neutralino masses from 0 to 100 GeV, with a mass difference between the top squark and the neutralino in a window of 30 GeV around the mass of the top quark, are excluded for the first time with CMS data. The results of theses searches are also interpreted in an alternative signal model of dark matter production via a spin-0 mediator in association with a top quark pair. Upper limits are set on the cross section for mediator particle masses of up to 420 GeV

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

Abstract The parton-level top quark (t) forward-backward asymmetry and the anomalous chromoelectric (d̂ t) and chromomagnetic (μ̂ 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 ¯ 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 ¯ final states. The values found for the parameters are AFB(1)=0.048−0.087+0.095(stat)−0.029+0.020(syst),μ̂t=−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.

Calibration of the CMS hadron calorimeters using proton-proton collision data at root s=13 TeV

Methods are presented for calibrating the hadron calorimeter system of theCMSetector at the LHC. The hadron calorimeters of the CMS experiment are sampling calorimeters of brass and scintillator, and are in the form of one central detector and two endcaps. These calorimeters cover pseudorapidities vertical bar eta vertical bar ee data. The energy scale of the outer calorimeters has been determined with test beam data and is confirmed through data with high transverse momentum jets. In this paper, we present the details of the calibration methods and accuracy.Peer reviewe