The periodontal recession is defined as the apical location of the gingival margin in relation to the cement-enamel, which appears predominantly in the buccal surface of the teeth and also to cause disharmony in aesthetics, can cause dentine sensitivity union.For the treatment of gingival recessions have been proposed techniques that 2004 nissan ti
The instantaneous phase signal contains abundant information about the health state of machineries, which plays an important role in fault detection of machineries, rotor dynamic balance, transmission error of Rotate Vector reducer, etc.Traditional methods use signal processing methods based on encoders, EMD and Hilbert transforms or fractional del
Last train timetable plays an important role in actual operation of metro systems, especially in big cities.Appreciable transfer passengers rely on last train kinkalicious connections to reach their destinations, which requires a coordinated last train timetable.This study is devoted to dealing with the last train timetabling problem in metro netwo
BACKGROUND: Migrations allow animals to find food resources, rearing habitats, or mates, but often impose considerable predation risk.Several behavioural strategies may reduce this risk, including faster travel speed and taking routes with shorter total distance.Descriptions of the natural range of variation in migration strategies among individual