Estudio paramétrico simplificado del comportamiento térmico de un satélite en órbita baja terrestre

En el presente trabajo se presenta un modelo simplificado que permite realizar predicciones sobre el comportamiento térmico de un microsatélite. En este modelo se presentan los datos y resultados en forma paramétrica lo cual brinda la ventaja de estudiar distintas configuraciones en el espacio de diseño. Se consigna la notación utilizada, análisis de cargas térmicas -para diversas hipótesis-, ecuaciones y parametrización del problema, rango de valores explorados en el espacio de diseño, simulaciones realizadas, discusión de resultados y conclusiones.Tema: Modelización y Simulación.Asociación Argentina de Energía Sola

Estudio paramétrico simplificado del comportamiento térmico de un satélite en órbita baja terrestre

En el presente trabajo se presenta un modelo simplificado que permite realizar predicciones sobre el comportamiento térmico de un microsatélite. En este modelo se presentan los datos y resultados en forma paramétrica lo cual brinda la ventaja de estudiar distintas configuraciones en el espacio de diseño. Se consigna la notación utilizada, análisis de cargas térmicas - para diversas hipótesis-, ecuaciones y parametrización del problema, rango de valores explorados en el espacio de diseño, simulaciones realizadas, discusión de resultados y conclusiones.Facultad de Arquitectura y Urbanism

The mental wellbeing of current and retired professional cricketers: an observational prospective cohort study

Objective: Scientific knowledge about symptoms of common mental disorders in professional cricket is non-existent. Consequently, the aims of the study were to determine the prevalence and the 6months incidence of symptoms of common mental disorders (CMD: distress, anxiety/depression, sleep disturbance, adverse alcohol use) among current and former professional cricketers and to explore the association of potential stressors (significant injury, surgery, adverse life events, career dissatisfaction) and CMD.Methods: An observational prospective cohort study with a follow-up period of 6months was conducted among current and former professional cricketers from South Africa. Using validated questionnaires to assess symptoms of common mental disorders as well as several stressors, an electronic questionnaire was set up and distributed by the South African Cricketers Association (SACA).Results: A total of 116 participants enrolled at baseline (overall response rate of 33%) and 76 of those participants completed the 6month follow-up (follow up rate of 66%). The prevalence of symptoms of CMD in current professional cricketers was 38% for distress, 38% for sleep disturbance, 37% for anxiety/depression and 26% for adverse alcohol use. Among former professional cricketers, baseline prevalence as was 26% for distress, 24% for anxiety/depression, 21% for sleep disturbance and 22% for adverse alcohol use. Career dissatisfaction led to an increased risk of distress, anxiety/depression and sleep disturbance in current professional cricketers. Surgeries and adverse life events led to an increase in reported symptoms of distress and anxiety/depression in current professional cricketers.Conclusions: It was concluded that symptoms of CMD are prevalent in both current and former professional cricketers and the association with surgery, adverse life events and cricket career dissatisfaction may provide some insight into possible mechanism

Extending resolution within a single imaging frame

The resolution of fluorescence microscopy images is limited by the physical properties of light. In the last decade, numerous super-resolution microscopy (SRM) approaches have been proposed to deal with such hindrance. Here we present Mean-Shift Super Resolution (MSSR), a new SRM algorithm based on the Mean Shift theory, which extends spatial resolution of single fluorescence images beyond the diffraction limit of light. MSSR works on low and high fluorophore densities, is not limited by the architecture of the optical setup and is applicable to single images as well as temporal series. The theoretical limit of spatial resolution, based on optimized real-world imaging conditions and analysis of temporal image stacks, has been measured to be 40 nm. Furthermore, MSSR has denoising capabilities that outperform other SRM approaches. Along with its wide accessibility, MSSR is a powerful, flexible, and generic tool for multidimensional and live cell imaging applications.Fil: Torres García, Esley. Universidad Nacional Autónoma de México; MéxicoFil: Pinto Cámara, Raúl. Universidad Nacional Autónoma de México; MéxicoFil: Linares, Alejandro. Universidad Nacional Autónoma de México; MéxicoFil: Martínez, Damián. Universidad Nacional Autónoma de México; MéxicoFil: Abonza, Víctor. Universidad Nacional Autónoma de México; MéxicoFil: Brito Alarcón, Eduardo. Universidad Nacional Autónoma de México; MéxicoFil: Calcines Cruz, Carlos. Universidad Nacional Autónoma de México; MéxicoFil: Valdés Galindo, Gustavo. Universidad Nacional Autónoma de México; MéxicoFil: Torres, David. Universidad Nacional Autónoma de México; MéxicoFil: Jabloñski, Martina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental. Fundación de Instituto de Biología y Medicina Experimental. Instituto de Biología y Medicina Experimental; ArgentinaFil: Torres Martínez, Héctor H.. Universidad Nacional Autónoma de México; MéxicoFil: Martínez, José L.. Universidad Nacional Autónoma de México; MéxicoFil: Hernández, Haydee O.. Universidad Nacional Autónoma de México; MéxicoFil: Ocelotl Oviedo, José P.. Universidad Nacional Autónoma de México; MéxicoFil: Garcés, Yasel. Universidad Nacional Autónoma de México; MéxicoFil: Barchi, Marco. University of Rome Tor Vergata; ItaliaFil: D'Antuono, Rocco. Crick Advanced Light Microscopy Facility; Reino UnidoFil: Bošković, Ana. European Molecular Biology Laboratory; AlemaniaFil: Dubrovsky, Joseph G.. Universidad Nacional Autónoma de México; MéxicoFil: Darszon, Alberto. Universidad Nacional Autónoma de México; MéxicoFil: Buffone, Mariano Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental. Fundación de Instituto de Biología y Medicina Experimental. Instituto de Biología y Medicina Experimental; ArgentinaFil: Rodríguez Morales, Roberto. No especifíca;Fil: Rendon Mancha, Juan Manuel. Universidad Autónoma del Estado de Morelos; MéxicoFil: Wood, Christopher D.. Universidad Autónoma del Estado de Morelos; MéxicoFil: Hernández García, Armando. Universidad Autónoma del Estado de Morelos; MéxicoFil: Krapf, Diego. University of Colorado; Estados UnidosFil: Crevenna, Álvaro H.. European Molecular Biology Laboratory; ItaliaFil: Guerrero, Adán. Universidad Autónoma del Estado de Morelos; Méxic

Extending resolution within a single imaging frame

The resolution of fluorescence microscopy images is limited by the physical properties of light. In the last decade, numerous super-resolution microscopy (SRM) approaches have been proposed to deal with such hindrance. Here we present Mean-Shift Super Resolution (MSSR), a new SRM algorithm based on the Mean Shift theory, which extends spatial resolution of single fluorescence images beyond the diffraction limit of light. MSSR works on low and high fluorophore densities, is not limited by the architecture of the optical setup and is applicable to single images as well as temporal series. The theoretical limit of spatial resolution, based on optimized real-world imaging conditions and analysis of temporal image stacks, has been measured to be 40 nm. Furthermore, MSSR has denoising capabilities that outperform other SRM approaches. Along with its wide accessibility, MSSR is a powerful, flexible, and generic tool for multidimensional and live cell imaging applications