Electronic structure of the double perovskite Ba2Er(Nb,Sb)O 6

In this work, we present a detailed study of the structural and the electronic structure of the double perovskite Ba2Er(Nb,Sb)O 6. All calculations were performed with the Full-Potential Linear Augmented Plane Wave method (FP-LAPW) based on the Density Functional Theory (DFT). From the minimization of energy as a function of volume using the Murnaghan's state equation has been obtained the equilibrium lattice parameter and the bulk modulus of these compounds. The study of the electronic structure was based in the analysis of the electronic density of states (DOS), and the density of charge, showing that these compounds have a total magnetic moment of 3.0 μB per formula unit due to Er atoms.Fil: Gil Rebaza, Arles Víctor. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; ArgentinaFil: Deluque Toro, Crispulo Enrique. Universidad Popular del Cesar; ColombiaFil: Téllez Landínez, D. A. Universidad Nacional de Colombia; ColombiaFil: Roa Rojas, J.. Universidad Nacional de Colombia; Colombi

Electronic structure of the double perovskite Ba2Er(Nb,Sb)O 6

In this work, we present a detailed study of the structural and the electronic structure of the double perovskite Ba2Er(Nb,Sb)O6. All calculations were performed with the Full-Potential Linear Augmented Plane Wave method (FP-LAPW) based on the Density Functional Theory (DFT). From the minimization of energy as a function of volume using the Murnaghan's state equation has been obtained the equilibrium lattice parameter and the bulk modulus of these compounds. The study of the electronic structure was based in the analysis of the electronic density of states (DOS), and the density of charge, showing that these compounds have a total magnetic moment of 3.0 μB per formula unit due to Er atoms.Instituto de Física La Plat

Electronic structure of the double perovskite Ba2Er(Nb,Sb)O 6

In this work, we present a detailed study of the structural and the electronic structure of the double perovskite Ba2Er(Nb,Sb)O6. All calculations were performed with the Full-Potential Linear Augmented Plane Wave method (FP-LAPW) based on the Density Functional Theory (DFT). From the minimization of energy as a function of volume using the Murnaghan's state equation has been obtained the equilibrium lattice parameter and the bulk modulus of these compounds. The study of the electronic structure was based in the analysis of the electronic density of states (DOS), and the density of charge, showing that these compounds have a total magnetic moment of 3.0 μB per formula unit due to Er atoms.Instituto de Física La Plat

Lugares, recorridos y sentidos de la memoria histórica: acercamientos metodológicos

244 páginasEste libro es una iniciativa de los Grupos Regionales de Memoria Histórica (GRMH), que, junto con el Centro Nacional de Memoria Histórica desde el 2013 generaron propuestas para la construcción de memoria histórica en Colombia. El objetivo de la consolidación de los GRMH ha sido reconocer procesos de investigación locales que hacen profesores universitarios para tejer puentes entre las instituciones del país y comunidades victimizadas en el marco del con icto armado interno de Colombia. Aunque las apuestas de investigación social participativa se nutren de múltiples aristas, disciplinas y escuelas de pensamiento, existen particularidades metodológicas en las investigaciones que se formulan en clave de memoria histórica que, en esta ocasión, son transversales y se profundizan en cada capítulo.La fuerza de la memoria: hilos, nudos y reflexiones de una trayectoria colectiva || Introducción || El objeto-relato como dispositivo de memoria: el caso del grupo de alabao de pogue, bojayá, chocó || Metodologías colaborativas y memorias con potencial transformador en la comunidad de Puerto Gaviotas, Calamar, Guaviar

Caso clínico de la unidad de medicina interna hipertensión arterial de origen renovascular

Hombre de 28 años, natural y procedente de Bogotá, consulto por cefalea progresiva fronta-occipital de treinta horas de evolución, acompañada de vomito en dos oportunidades y de trastorno de la conciencia, con relajación del esfínter vesical. La esposa informo episodio similar un mes ames, cuando fue hospitalizado, encontrándose HTA y hemorragia subaracnoidea. Salió contratamiento triconjugado (captopril, nifedipina, propanolol), el cual suspendió ocho días antes del ingreso

Age at natural menopause and blood pressure traits: Mendelian randomization study

Copyright: © 2021 by the authors. Observational studies suggest that early onset of menopause is associated with increased risk of hypertension. Whether this association is causal or due to residual confounding and/or reverse causation remains undetermined. We aimed to evaluate the observational and causal association between age at natural menopause (ANM) and blood pressure traits in Caucasian women. A cross-sectional and one-sample Mendelian randomization (MR) study was conducted in 4451 postmenopausal women from the CoLaus and Rotterdam studies. Regression models were built with observational data to study the associations of ANM with systolic and diastolic blood pressure (SBP/DBP) and hypertension. One-sample MR analysis was performed by calculating a genetic risk score of 54 ANM-related variants, previously identified in a genome-wide association study (GWAS) on ANM. In the two-sample MR analysis we used the estimates from the ANM-GWAS and association estimates from 168,575 women of the UK Biobank to evaluate ANM-related variants and their causal association with SBP and DBP. Pooled analysis from both cohorts showed that a one-year delay in menopause onset was associated with 2% (95% CI 0; 4) increased odds of having hypertension, and that early menopause was associated with lower DBP (β = −1.31, 95% CI −2.43; −0.18). While one-sample MR did not show a causal association between ANM and blood pressure traits, the two-sample MR showed a positive causal association of ANM with SBP; the last was driven by genes related to DNA damage repair. The present study does not support the hypothesis that early onset of menopause is associated with higher blood pressure. Our results suggest different ANM-related genetic pathways could differently impact blood pressure.The CoLaus study was and is supported by research grants from GlaxoSmithKline, the Faculty of Biology and Medicine of Lausanne, and the Swiss National Science Foundation (grants 33CSCO-122661, 33CS30-139468, and 33CS30-148401). Zayne M. Roa-Díaz have received fund- ing from the European Union’s Horizon 2020 research and innovation program under the Marie Skłodowska-Curie grant agreement No 801076, through the SSPH+Global Ph.D. Fellowship Program in Public Health Sciences (GlobalP3HS) of the Swiss School of Public Health