Vorticity in closed quantum fluid circuits is known to arise the form of persistent currents. In this work, we develop a method engineer transport quantized vorticity between density-coupled ring-shaped atomic Bose-Einstein condensates experimentally accessible regimes. Introducing tunable weak link rings, observe and characterize controllable periodic transfer current investigate role temperat...

In the title compound, C(19)H(18)O, the exocyclic C=C double bond has an E configuration. The ethyl substituent on the cyclo-hexa-none ring is in an axial position. The cyclo-hexa-none ring adopts a half-chair conformation, presumably due to conjugation in the benzene ring.

Measuring the volume fraction of each phase in multi-phase flows is an essential problem petrochemical industries. One standard flow regimes stratified two-phase flow, which occurs when two immiscible fluids are present a pipeline. In this paper, we performed several experiments on vertical concave, horizontal and double-ring sensors to benchmark obtained simulation results from modeling these ...

In the title compound, C20H22N2O2, the central pyridine ring forms a dihedral angle of 76.32 (8)° with the pseudo-axial benzene ring. The cyclo-octane ring adopts a twisted boat chair conformation. In the crystal, weak inter-molecular C-H⋯π inter-actions between inversion-related mol-ecules result in the formation of linear double chains along the b-axis direction.