Introduction: Presolar silicate grains have been abundantly identified since their first discovery less than a decade ago [1,2,3]. The O isotopic compositions of both silicate and oxide stardust indicate the vast majority (>90%) condensed around O-rich asymptotic giant branch (AGB) stars. Though both presolar phases have average sizes of ~300 nm, grains larger than 1 μm are extremely uncommon f...

Introduction: During a nano-mineralogy investigation of the Acfer 094 carbonaceous chondrite, lakargiite (CaZrO3) was identified as submicrometer inclusions in an isolated hibonite grain in section USNM 7233-1. The hibonite grain is described in Simon and Grossman [1]. Lakargiite is a recently found perovskite-group mineral from hightemperature skarns in ignimbrites of the Upper-Chegem volcanic...

El objetivo del estudio fue evaluar en el primer año de establecimiento, número plantas establecidas, producción forraje, composición morfológica, rendimiento semilla, calidad física y fisiológica semilla siete pastos nativos mexicanos buffel Tulancingo, Hidalgo. experimento se estableció abril 2020 riego con un diseño bloques completamente al azar. Para analizar los datos usó GLM SAS Tukey (α=...

Ostial and antral pulmonary vein isolation techniques have different properties. In addition, there are differences between radiofrequency cryoballoon ablation based on tissue contact characteristics. Finally, posterior wall (PWI) has been proposed as an adjuvant to PVI because of embryological origin similarities. We examine the results ostial RF ablation, PWI adjunction in DECAAF-II trial wit...

Background: Alzheimer’s disease, Parkinson’s and Huntington’s disease are neurodegenerative disorders characterized by progressive structural functional loss of specific neuronal populations, protein aggregation, insidious adult onset, chronic progression. Modeling these diseases in animal models is useful for studying the relationship between dysfunction abnormal behaviours screening therapies...