The concept of the micro-structured vacuum sensor presented in this article is the measurement of the electrical conductivity of thinned gases in order to develop a small, economical and quite a simple type Hockey Protective - Helmet - Combo of vacuum sensor.There are already some approaches for small vacuum sensors.Most of them are based on conser

Abstract Background The ability for serially homologous structures to acquire a separate identity has been primarily investigated for structures dependent on Hox gene input but is still incompletely understood in other systems.The fore and hindwings of butterflies are serially homologous structures as are the serially homologous eyespots that can d