Abstract: Devices, systems and methods for controlling a patient's body temperature by endovascular heat exchange.

Abstract: Olefine oxides are produced by contacting an olefine with oxygen in the presence of a silver containing catalyst and a chlorine-containing reaction modifier; the performance of the catalyst is improved by contacting it with a nitrate or nitrite forming substance for example nitric oxide.

Abstract: A deployable crossed log periodic dipole array is made up of a plurality of bays spaced along a feed transmission line arrangement. Each bay includes a support centered on the array axis. Each bay also includes as antenna elements four long, straight, flat or slightly bowed springs or spring-like tape elements, each fastened at one end to a transmission line conductor. A retainer associated with each bay is rotatable about the cylindrical support and engages the spring elements, so that rotation of the retainer winds the spring elements against the spring resistance and stores energy therein. A locking arrangement simultaneously engages or disengages all the retainers. Simultaneous unlocking of the retainers allows the springs of all the bays to rotate the retainers and to unwind. As the springs unwind, they deploy. The transmission line arrangement includes two open two-wire transmission lines on a common axis. To reduce torques during deployment, each bay contrarotates relative to an adjacent bay.

Abstract: An apparatus for tilting a viewfinder of a camera in two opposite senses without raising it from a storage position includes a main chassis, a subchassis rotatably mounted within main chassis and a carriage supporting the viewfinder within said subchassis and engaging cam surfaces of the subchassis. The rotation of the subchassis with respect to the main chassis allows for various positions of the viewfinder while tilted in a first sense and movement of the carriage along the cam surfaces of the subchassis allows for various positions of the viewfinder while tilted in a second sense.

Abstract: A transducer mounting arrangement for tape record and/or replay systems having a rotating scanner is provided wherein both transducer protrusion from the cylindrical surface of the scanner and the dihedral angle between the planes in which the gaps of the transducers reside, are adjustable.

Abstract: Catalysts for the oxidation of alkenes to alkylene oxides comprise silver on supports having a surface area of 0.05 to 10 m.sup.2 /g, and at least 16 .mu.g equivalents per square meter of potassium together with rubidium and/or cesium.

Abstract: Catalysts for the oxidation of alkenes to alkylene oxides comprise silver on a support of 0.05 to 10m.sup.2 /g surface area, a promoting amount of sodium and also potassium, rubidium and/or cesium.