Abstract: A system for providing electric energy to users includes a server node, a set of supply nodes and a set of mobile terminals. One or more communication networks connect the server node to the supply nodes. Each supply node provides output energy via a remote-controlled outlet. Each mobile terminal communicates with the server node over a wireless interface. The supply nodes repeatedly send respective instruction inquiries to the server node, which also receives activation requests from the mobile terminals specifying a particular outlet and an identity of a mobile-terminal user. In response to an activation request, the server node checks if the user identity is authorized to activate the outlet, and if so; in response to an instruction inquiry from a first supply node associated with the outlet, sends an activation accept to the first supply node enabling output of electric energy from the outlet.

Abstract: A system for providing electric energy to users includes a server node, a set of supply nodes and a set of mobile terminals. One or more communication networks connect the server node to the supply nodes. Each supply node provides output energy via a remote-controlled outlet. Each mobile terminal communicates with the server node over a wireless interface. The supply nodes repeatedly send respective instruction inquiries to the server node, which also receives activation requests from the mobile terminals specifying a particular outlet and an identity of a mobile-terminal user. In response to an activation request, the server node checks if the user identity is authorized to activate the outlet, and if so; in response to an instruction inquiry from a first supply node associated with the outlet, sends an activation accept to the first supply node enabling output of electric energy from the outlet.

Abstract: A heart valve prosthesis has a substantially annular valve body and two leaflets which are disposed in the valve body and, be means of a hinge mechanism, are pivotable between an open position and a closed position. The leaflets are substantially semicircular and evenly curved in two perpendicular directions, one direction being perpendicular to the diameter of the semicircle, so as to bulge outward, as seen from the center of the annulus. The leaflet edges closest to the diameter of the semicircle are so curved that they, when the valve is closed, are applied against one another along their entire length. Further, two projections are provided on the inside of the annulus, entirely within the width thereof, the corner portions of the leaflets being applied against these projections.

Abstract: A device for maintaining an opening in a first blood vessel in open position during a surgical procedure for suturing the opening in the first blood vessel to an opening in a second blood vessel. The device comprises: an elongate slender barrel with a straight longitudinal axis from the handle end to the tip end, a groove extending the length of the barrel, the groove ending in a slanting open cavity at the tip end, and a leaf spring clampattached to the barrel to clamp the blood vessel to the posterior convex surface of the tip.