Orthodontics is a scientific art aiming to achieve the individual aesthetic optimum and functional development and dento-maxilo-facial, with the help of an assembly of biological and mechanical means (Chateau, 1975).Symmetry is indisputably of numerical order and it is essential in relation to a central axis in the transverse direction, but in our
Abstract In human walking, the left and right legs move alternately, half a stride out of phase with each other.Although various parameters, such as stride frequency and length, vary with walking speed, the antiphase relationship remains unchanged.In contrast, during walking puffy spa headband in left-right asymmetric situations, the relative phase
Theoretical studies predict that it is not possible to eradicate a disease under voluntary vaccination because of the emergence of non-vaccinating "free-riders" when vaccination coverage increases.A central tenet of this approach is that human behaviour follows an economic model of rational choice.Yet, empirical studies reveal that vaccination deci
The detection, characterization, and monitoring of SARS-CoV-2 recombinant variants constitute a challenge for public health authorities worldwide.Recombinant variants, composed of two or more SARS-CoV-2 lineages, here often have unknown impacts on transmission, immune escape, and virulence in the early stages of emergence.We examined 4213 SARS-CoV-