Abstract: The present invention relates to an optical sub-assembly, i.e. a receiver optical subassembly or a transmitter optical sub-assembly, for use in an optical transceiver device. The optical sub-assembly according to the present invention includes a hermetic ceramic package with a multi-layer ceramic structure providing a unique RF signal and ground structure providing a controlled signal impedance to achieve high signal transmission quality.

Abstract: A method for measuring intracellular ATP and/or gene expression, which method comprises transforming a cell with a construct which encodes a luciferase and a luciferin recycling protein, introducing luciferin into said cell, and monitoring biolominescent signals from said cell. Novel luciferin recycling proteins are also described and these, together with their use in the production of optically active enzyme substrates are claimed.

Abstract: A method is disclosed for evaluating a damaged blade in a compressor or turbine using a computer system accessing a database of blade repair information, where the method includes: selecting a blade damage geometry category corresponding to the damage of the blade from a plurality of blade damage geometry categories; measuring the blade damage, and generating a repair geometry for the blade based on the blade damage measurements and the selected blade damage geometry category.

Abstract: A seal assembly comprising a main O-ring seal element for engaging in a fluid tight manner opposed surfaces of two objects to be sealingly connected together and a barrier element positioned to protect all or a substantial portion of the surface of the main O-ring seal element against contact by the fluid when passing through the seal assembly from one object to the other object.

Abstract: A process for the preparation of butane triols is provided. In the process, a malic acid diester is reduced with sodium borohydride in the presence of an ether and an alcohol. Preferably, the malic acid diester is an ethyl or methyl ester, the ether is tetrahydrofuran or bis(2-methoxyethyl) ether (diglyme), and the alcohol comprises ethanol. Advantageously, the reaction is carried out at ambient temperature.

Abstract: An ultrasonic tying tool for installation of a tape about a bundle of elongate articles. The tool includes an ultrasonic horn wherein the welding tip is moveable between a first position for welding of a tape to secure the tensioned loop about the plurality of articles and a second position wherein the welding tip is translated a distance from the first position to effect cutting of the tensioned loop from the stock of tape and to tack weld the loose cut end to the underlying tape of the loop to eliminate any protruding sharp edges. The tool additionally includes a belt drive mechanism for advancing the tape to the jaw assembly and for tensioning the tape following looping of the tape about the outside.

Abstract: A cable tie includes an elongate generally planar strap and a head. The head includes a tapering entrance into a passageway therethrough for inserting the strap and a flexibly hinged locking pawl adjacent the passageway. The head also includes a fixed locking tooth adjacent the entry end of the passageway for engaging the strap after full securing an article or articles to be bundled. The fixed locking tooth of the present invention is desirably positioned to allow unobstructed insertion of the tail through the head. The present invention is able to minimize the stretching of the strap body when adjacent to the locking pawl by providing an edge which frictionally engages the strap body as the strap body egresses from the passageway of the head. Furthermore, the present invention may include a pair of counter-rotatable locking elements positioned to one side of the passageway through the head.

Abstract: A cable tie includes an elongate generally planar strap and a head. The head includes a passageway therethrough for inserting the strap and a flexibly hinged locking pawl adjacent the passageway. The cable tie resists longitudinal deformation of the locking notches when adjacent the locking teeth on the pawl. Side edge-barriers are located along the strap adjacent the head so that the strap may be cut at a location between the side edge-barriers.