Recent demand on the measurement resolution of precise positioning comes up to tens of picometers.Some distinguished researches have been performed to measure the displacement in picometer order, however, few of them can verify the measurement performance as available tools in industry.This is not only because the picometer displacement is not yet

This article gives an account of the results of research on imagery surrounding the what of teaching literature in grades eleven three Tread Belt urban public educational institutions in the municipality of Ciudad Bolivar, located in the department of Antioquia.The article presents two main areas: the first gathers all those which instrumentalizes

Piezoelectric micro-pumps offer many applications and could provide considerable flow rates in miniature Scent systems.This study parametrically investigates the effects of major parameters, namely the length, width and attack angle of valves, piezoelectric length, and applied voltage.The results show that these parameters significantly affect the

Female choice may be linked to population density if the expected encounter rates with potential mates affects choosiness (the energy and risk engaged to express mate preferences).Choosiness should covary with male availability, which could be assessed using the social cues available during development.We tested whether the exposure of juvenile fem