Observation of the Gamma-Ray Binary HESS J0632+057 with the HESS, MAGIC, and VERITAS Telescopes

The results of gamma-ray observations of the binary system HESS J0632 + 057 collected during 450 hr over 15 yr, between 2004 and 2019, are presented. Data taken with the atmospheric Cherenkov telescopes H.E.S.S., MAGIC, and VERITAS at energies above 350 GeV were used together with observations at X-ray energies obtained with Swift-XRT, Chandra, XMM-Newton, NuSTAR, and Suzaku. Some of these observations were accompanied by measurements of the H alpha emission line. A significant detection of the modulation of the very high-energy gamma-ray fluxes with a period of 316.7 +/- 4.4 days is reported, consistent with the period of 317.3 +/- 0.7 days obtained with a refined analysis of X-ray data. The analysis of data from four orbital cycles with dense observational coverage reveals short-timescale variability, with flux-decay timescales of less than 20 days at very high energies. Flux variations observed over a timescale of several years indicate orbit-to-orbit variability. The analysis confirms the previously reported correlation of X-ray and gamma-ray emission from the system at very high significance, but cannot find any correlation of optical H alpha parameters with fluxes at X-ray or gamma-ray energies in simultaneous observations. The key finding is that the emission of HESS J0632 + 057 in the X-ray and gamma-ray energy bands is highly variable on different timescales. The ratio of gamma-ray to X-ray flux shows the equality or even dominance of the gamma-ray energy range. This wealth of new data is interpreted taking into account the insufficient knowledge of the ephemeris of the system, and discussed in the context of results reported on other gamma-ray binary systems

Sensitivity of the Cherenkov Telescope Array to a dark matter signal from the Galactic centre

We provide an updated assessment of the power of the Cherenkov Telescope Array (CTA) to search for thermally produced dark matter at the TeV scale, via the associated gamma-ray signal from pair-annihilating dark matter particles in the region around the Galactic centre. We find that CTA will open a new window of discovery potential, significantly extending the range of robustly testable models given a standard cuspy profile of the dark matter density distribution. Importantly, even for a cored profile, the projected sensitivity of CTA will be sufficient to probe various well-motivated models of thermally produced dark matter at the TeV scale. This is due to CTA's unprecedented sensitivity, angular and energy resolutions, and the planned observational strategy. The survey of the inner Galaxy will cover a much larger region than corresponding previous observational campaigns with imaging atmospheric Cherenkov telescopes. CTA will map with unprecedented precision the large-scale diffuse emission in high-energy gamma rays, constituting a background for dark matter searches for which we adopt state-of-the-art models based on current data. Throughout our analysis, we use up-to-date event reconstruction Monte Carlo tools developed by the CTA consortium, and pay special attention to quantifying the level of instrumental systematic uncertainties, as well as background template systematic errors, required to probe thermally produced dark matter at these energies

Abordando la autonomía en actividades de la vida diaria, desde la terapia ocupacional en niños con problemas de desnutrición de 2 a 4 años del Centro Educacional de Recuperación Nutricional ubicado en San Juan Sacatepéquez.

El ejercicio Técnico Supervisado, se llevó a cabo en el Centro Educacional y Recuperación Nutricional, ubicado en el municipio de San Juan Sacatepéquez. Tuvo como objetivo, rehabilitar, habilitar y potenciar las actividades de la vida diaria: alimentación, higiene y vestuario, en los niños en condición de desnutrición de 2 a 4 años de edad. Desarrolla la autonomía en cuidados como: alimentación, cepillado de dientes, utilización de letrina, lavado de manos y traslados. Aumenta la fuerza muscular, amplitud articular, coordinación motora por medio de actividades de la vida diaria. Estimula funciones superiores como la memoria, concentración, organización, entre otras por medio de actividades terapéuticas manuales y masoterapia. Para seleccionar la muestra se utilizó la técnica de muestreo no probabilístico y estuvo integrad por niños kachiqueles y ladinos de 2 a 4 años de edad. Para recolectar datos se utilizaron las técnicas siguientes: entrevista u observación. El instrumento que se utilizaron fue el diario de campo. Analiza e interpreta los resultados y concluye que, se evidenció la importancia del profesional de la terapia ocupacional en la intervención con niños que se encuentran en condición de desnutrición, para lograr su autonomía en las actividades de la vida diaria. Recomienda a la escuela de Ciencias Psicológicas, promocionar la intervención de la terapia ocupacional en la condición de desnutrición infantil, para brindar la funcionalidad de la autonomía de los niños

Revised nomenclature for the mammalian long-chain acyl-CoA synthetase gene family.

By consensus, the acyl-CoA synthetase (ACS) community, with the advice of the human and mouse genome nomenclature committees, has revised the nomenclature for the mammalian long-chain acyl-CoA synthetases. ACS is the family root name, and the human and mouse genes for the long-chain ACSs are termed ACSL1,3-6 and Acsl1,3-6, respectively. Splice variants of ACSL3, -4, -5, and -6 are cataloged. Suggestions for naming other family members and for the nonmammalian acyl-CoA synthetases are made