Abstract Background The asymmetric segregation of determinants during cell division is a fundamental mechanism for generating cell fate diversity during development.In Drosophila, neural precursors (neuroblasts) divide in a stem cell-like manner generating a larger apical neuroblast and a smaller basal ganglion mother cell.The cell fate determinant
Abstract Wind and rain are considered main drivers for mobilization and transport of macroplastics on land, yet there is a lack of empirical data that quantifies this.We present lab experiment results on land-based macroplastic mobilization and transport.We placed four types of macroplastics on terrains with varying surface roughness and slope angl
This article addresses the challenges of renewing the professional training of historians in a global context increasingly characterized by the ubiquity of information technologies in UMBRELLAS all dimensions of social life.We analyze our recent pedagogic experiences, strongly inspired in the theoretical-methodological reflections by US historian T
This paper proposes a Negative-buoyancy Quad Tilt-rotor Autonomous Underwater Vehicle (NQTAUV), for which an attitude-tracking controller is designed for the hover and transition modes based on a disturbance-rejection control scheme.First, the structure of NQTAUV is illustrated, a mathematical model based on the Rodrigues parameters is proposed, an