obstruction. Because ofthe irregular rhythm, the redundant (and unresected) anterior mitral valve leaflet may be in a more open position at the time of ventricular systole, predisposingto an enhanced Venturi effect and hence greater obstruction. Since drug therapy, heart rate, blood pressure, body position (at the time of echocardiogram), and volume status were similar at the time of both studi...

A three-terminal device based upon a two-dimensional electron system is investigated in the regime of nonequilibrium transport. Excited electrons scatter with the cold Fermi sea and transfer energy and momentum to other electrons. A geometry analogous to a water jet pump is used to create a jet pump for electrons. Because of its phenomenological similarity we name the observed behavior the “ele...

In Architecture, the modernists applied scientific principles to create stark designs that were functional but flouted convention. Robert Venturi, whose 1966 book “Complexity and Contradiction in Architecture” defined Post-modernism, criticized this minimalist approach. He celebrated instead the rich mix of historic styles found in great cities such as Rome, which many people find more comforta...

Jet mixing devices ("Venturi" devices) can be used in conjunction with domiciliary oxygen concentrators and provide delivered oxygen concentrations similar to those obtained with medical oxygen, though with the devices delivering higher concentrations (above 30% oxygen) the total flow is substantially reduced. A jet mixing device driven by a domiciliary concentrator would be valuable in various...