the struggle between restoration and counterrestoration in the course of the founding of the Ch'in dynasty

Permissive working allows more than one train to be in a block section at one time but trains must be run at low speed in order to stop on sight behind the train in front. Such working is often authorised to allow freight trains to bunch together to await a path through a bottleneck instead of being strung out over several block sections, as would be necessary if absolute working were in force.

Liquid-liquid phase separation of charge/aromatic-enriched intrinsically disordered proteins (IDPs) is critical in the biological function of membraneless organelles.

Treatments for mitral insufficiency include antihypertensives and valvular surgery; today the latter is often minimally invasive and even totally endoscopic.