(a, d, g) The percolation transition processes during the morning peak, off-peak, and evening peak periods for the URT system. (b, c) The network phase transitions occurring during the morning peak ...

(Left) Pre-ignition (below the activation threshold) Only a handful of immune “tags” (C3b proteins) cover the nanoparticle, so it barely sticks to the white membrane—too few contact points means the ...