El cuy: una curiosidad de la medicina tradicional andina

Se realizó una revisión bibliográfica sobre la soba y radiografía del cuy durante los meses de septiembre de 2017 hasta febrero de 2018 en el Policlínico Docente Reina del municipio Centro Habana, con el objetivo de describir una breve panorámica de esta curiosa particularidad de la medicina tradicional andina. Se consultaron bases de datos de sistemas como MEDLINE, IBEC, Scielo, Who, con la utilización de descriptores como cuy, medicina tradicional andina y saber ancestral. Los sistemas de salud y la medicina ancestral consideran en sus análisis aspectos históricos, científicos-tecnológicos, jurídicos y políticos en la convivencia milenaria de los pueblos andinos

Agentes físicos y entrenamiento excéntrico en la epicondilitis humeral

Introducción: La epicondilitis lateral o codo de tenista es una entidad musculoesquelética que ocurre en cualquier tipo de actividad con extensión repetida de la muñeca. Es un proceso degenerativo que ocurre en el epicóndilo lateral del radio, debido a un uso excesivo de la musculatura epicondílea.Objetivo: Evaluar la efectividad clínica del tratamiento con agentes físicos y entrenamiento excéntrico.Método: Se realizó un estudio analítico, comparativo prospectivo y longitudinal en pacientes con diagnóstico previo de epicondilitis, atendidos en los Servicios de Rehabilitación Integral del Policlínico Docente “Reina”, del municipio Centro Habana en la provincia La Habana, desde enero de 2018 hasta enero de 2019. Se conformaron dos grupos de pacientes: en uno se aplicó corrientes interferenciales por método segmentario y ejercicios excéntricos. El otro grupo se trató con corrientes interferenciales por método analítico y ejercicios de estiramiento.Resultados: El 50 % de los pacientes se encuentran en la tercera década de la vida con predominio del sexo femenino y en obreros. De acuerdo a la escala utilizada antes de comenzar el tratamiento, predominó el dolor moderado.Conclusiones: El alivio del dolor se logró con mayor efectividad en el grupo que recibió corrientes analgésicas con método segmentario, combinadas con un programa de ejercicios excéntricos

Neurodegeneración asociada a pantetonato quinasa

La neurodegeneración asociada a pantetonato quinasa es un trastorno infrecuente autosómico recesivo, que se caracteriza por depósitos de hierro a nivel de los núcleos basales. Predomina en las dos primeras décadas de la vida. Clínicamente se manifiesta con disartria, atrofia óptica, temblor, alteraciones de la marcha, manifestaciones extrapiramidales, deterioro intelectual y distonía. El diagnóstico se realiza por estudios de imagen, siendo la resonancia magnética (IRM) la más adecuada, en la cual se observan imágenes hipointensas a nivel de los núcleos basales con una hiperintensidad central, denominándose signo del “ojo del tigre”, que indica depósitos de hierro y degeneración neuroaxonal. El presente caso muestra la evolución terapéutica favorable de un paciente que presenta un cuadro clínico sugestivo de la enfermedad. El tratamiento fisiátrico se basó en magnetoterapia, termoterapia superficial, kinesiología aplicada y terapia ocupacional

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| < 0.03 at 95% confidence level. [Figure not available: see fulltext.

MUSiC : a model-unspecific search for new physics in proton-proton collisions at root s=13TeV

Results of the Model Unspecific Search in CMS (MUSiC), using proton-proton collision data recorded at the LHC at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 35.9 fb(-1), are presented. The MUSiC analysis searches for anomalies that could be signatures of physics beyond the standard model. The analysis is based on the comparison of observed data with the standard model prediction, as determined from simulation, in several hundred final states and multiple kinematic distributions. Events containing at least one electron or muon are classified based on their final state topology, and an automated search algorithm surveys the observed data for deviations from the prediction. The sensitivity of the search is validated using multiple methods. No significant deviations from the predictions have been observed. For a wide range of final state topologies, agreement is found between the data and the standard model simulation. This analysis complements dedicated search analyses by significantly expanding the range of final states covered using a model independent approach with the largest data set to date to probe phase space regions beyond the reach of previous general searches.Peer reviewe

Measurement of prompt open-charm production cross sections in proton-proton collisions at root s=13 TeV

The production cross sections for prompt open-charm mesons in proton-proton collisions at a center-of-mass energy of 13TeV are reported. The measurement is performed using a data sample collected by the CMS experiment corresponding to an integrated luminosity of 29 nb(-1). The differential production cross sections of the D*(+/-), D-+/-, and D-0 ((D) over bar (0)) mesons are presented in ranges of transverse momentum and pseudorapidity 4 < p(T) < 100 GeV and vertical bar eta vertical bar < 2.1, respectively. The results are compared to several theoretical calculations and to previous measurements.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 the azimuthal anisotropy of Y(1S) and Y(2S) mesons in PbPb collisions at root s(NN)=5.02 TeV

The second-order Fourier coefficients (v(2)) characterizing the azimuthal distributions of Y(1S) and Y(2S) mesons produced in PbPb collisions at root s(NN) = 5.02 TeV are studied. The Y mesons are reconstructed in their dimuon decay channel, as measured by the CMS detector. The collected data set corresponds to an integrated luminosity of 1.7 nb(-1). The scalar product method is used to extract the v2 coefficients of the azimuthal distributions. Results are reported for the rapidity range vertical bar y vertical bar < 2.4, in the transverse momentum interval 0 < pT < 50 GeV/c, and in three centrality ranges of 10-30%, 30-50% and 50-90%. In contrast to the J/psi mesons, the measured v(2) values for the Y mesons are found to be consistent with zero. (C) 2021 The Author(s). Published by Elsevier B.V.Peer reviewe

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 the Splitting Function in &ITpp &ITand Pb-Pb Collisions at root&ITsNN&IT=5.02 TeV

Data from heavy ion collisions suggest that the evolution of a parton shower is modified by interactions with the color charges in the dense partonic medium created in these collisions, but it is not known where in the shower evolution the modifications occur. The momentum ratio of the two leading partons, resolved as subjets, provides information about the parton shower evolution. This substructure observable, known as the splitting function, reflects the process of a parton splitting into two other partons and has been measured for jets with transverse momentum between 140 and 500 GeV, in pp and PbPb collisions at a center-of-mass energy of 5.02 TeV per nucleon pair. In central PbPb collisions, the splitting function indicates a more unbalanced momentum ratio, compared to peripheral PbPb and pp collisions.. The measurements are compared to various predictions from event generators and analytical calculations.Peer reviewe