Behavior of low birth weight in Imia’s town, Guantanamo province

Se realizó un estudio en el Policlínico Universitario "Ciro Frías Cabrera", del municipio Imías, provincia Guantánamo, durante el periodo enero 2010 a diciembre 2012, con el objetivo de caracterizar el comportamiento de bajo peso al nacer. El universo de estudio estuvo constituido por 957 nacidos vivos, de los cuales se selecciona una muestra de 59 niños. Una vez obtenida la información los datos fueron introducidos y procesados de forma manual, resumiéndose en variables estudiadas cuantitativas y cualitativas, que le dieron salida a los objetivos propuestos. Como principales resultados se obtuvieron los siguientes: el índice de bajo peso al nacer tuvo una tendencia a incrementarse en los años de estudio, predominaron los partos pretérminos, con un peso promedio superior a los 2 000 g, cuyas madres en su mayoría, al momento del parto, tenían edades entre los 20 y los 35 años. Prevalecieron los niños bajo peso al nacer, cuyas mujeres tuvieron durante el embarazo sepsis vaginal.A study is done at the Policlinic "Ciro Frías Cabrera" Imías Township, Guantanamo province, from January 2010 to December 2012 with the aim of characterizing the behavior of low birth weight. The studied group consists of 957 low births, which is selected a sample of 59 Children. The information and data are entered manually processed and summarized in quantitative and qualitative variables, very important to the proposed objectives. The rate of low birth weight has a tendency to increase in the years of study, preterm births were predominated, with more than 2 000 g, average weight whose mothers mostly had at the time of birth: the following main results were obtained delivery, with age between 20 and 35 years, prevailing low birth weight children, whose women had vaginal sepsis during pregnancy

Search for strongly interacting massive particles generating trackless jets in proton-proton collisions at s = 13 TeV

A search for dark matter in the form of strongly interacting massive particles (SIMPs) using the CMS detector at the LHC is presented. The SIMPs would be produced in pairs that manifest themselves as pairs of jets without tracks. The energy fraction of jets carried by charged particles is used as a key discriminator to suppress efficiently the large multijet background, and the remaining background is estimated directly from data. The search is performed using proton-proton collision data corresponding to an integrated luminosity of 16.1 fb - 1 , collected with the CMS detector in 2016. No significant excess of events is observed above the expected background. For the simplified dark matter model under consideration, SIMPs with masses up to 100 GeV are excluded and further sensitivity is explored towards higher masses

Inclusive search for supersymmetry using razor variables in pp collisions at √s=7 TeV

This article is the pre-print version of the final published paper that is available from the link below.An inclusive search is presented for new heavy particle pairs produced in root s=7 TeV proton-proton collisions at the LHC using 4,7 ± 0.1 fb-1 of integrated luminosity. The selected events are analyzed in the 2D razor space of MR, an event-by-event indicator of the heavy particle mass scale, and R, a dimensionless variable related to the missing transverse energy. The third-generation sector is probed using the event heavy-flavor content. The search is sensitive to generic supersymmetry models with minimal assumptions about the superpartner decay chains. No excess is observed in the number of events beyond that predicted by the standard model. Exclusion limits are derived in the CMSSM framework as well as for simplified models. Within the CMSSM parameter space considered, gluino masses up to 800 GeVand squark masses up to 1.35 TeVare excluded at 95% confidence level depending on the model parameters. The direct production of pairs of top or bottom squarks is excluded for masses as high as 400 GeV