Abstract: Systems and methods are disclosed that record quantifiable data for physical exams that assess neurological function. A system includes four main components. First, it employs a flexible and customizable procedure administration and documentation system developed and deployed on a mobile platform to aid in the identification, administration, configuration, and instruction of a suite of procedures for assessing different aspects of vestibular health. Second, it leverages commercial off-the-shelf (COTS) hardware with integrated sensor technology to allow non-vestibular experts to conduct assessment procedures by imposing constraints that ensure accurate and safe administration of VF assessment procedures. Next, it utilizes a gaming engine to both capture patient responses and to enable the accurate visual presentation of required stimuli for each of its assessments. Lastly, it leverages database storage and retrieval to visualize and aggregate data from multiple assessments and over many trials.

Abstract: A thermoplastic molding composition is disclosed comprising (A) at least one resinous component selected from the group consisting of (i) a homogeneous blend of polycarbonate resin and polycaprolactone and (ii) a copoly(carbonate-lactone) copolymer, and (B) at least one compound selected from a group consisting of benzopyrans, naphthopyrans, spirobenzopyrans, spironaphthopyrans, spirobenzoxazines, spironaphthoxazines, fulgides and fulgimides. The composition which contains the photochromic compound at an amount of 0.01 to 1.0 parts per hundred parts of weight of said (A) exhibits good photochromic properties.

Abstract: The assessment of clearance conditions in an operating turbine structure has provide difficult to achieve. The invention provides apparatus which enables the clearance between seal fins on rotating blades and adjacent fixed structure, to be observed during rotation, and comprises refracting prisms (30, 32) on the fixed structure arranged so as to straddle sealing fin (14) on the blades. The stage of blades on their associated disc are moved towards the fixed structure and light which is refracted through the prisms is obscured by the fins. In one embodiment, the ratio of obscured to unobscured light is utilised to generate electrical signals, which are then manipulated so as to indicate the magnitude of the clearance.