Abstract: A catheter procedure system includes a base and a robotic mechanism having a longitudinal axis and being movable relative to the base along the longitudinal axis. The robotic mechanism includes a robotic drive base including at least one drive mechanism, a cassette operatively secured to the robotic drive base, a rigid guide coupled to the cassette and fixed relative to the robotic mechanism and a flexible track having a distal end, a proximal end and a plurality of reflective sections. At least a portion of the flexible track is disposed within the rigid guide. The robotic mechanism also includes a position detector mounted to the robotic drive base and positioned beneath the flexible track. The position detector is configured to detect light reflected off of the reflective sections of the flexible track and to determine the position of the distal end of the flexible track based on the detected reflected light.

Abstract: Tagged products (including tagged petroleum products) and methods of detecting the same are disclosed. The tagged petroleum products are tagged with a violanthrone, e.g., a substituted violanthrone and/or an isoviolanthrone, e.g., a substituted isoviolanthrone.

Abstract: Tagged products (including tagged petroleum products) and methods of detecting the same are disclosed. The tagged petroleum products are tagged with a violanthrone, e.g., a substituted violanthrone and/or an isoviolanthrone, e.g., a substituted isoviolanthrone.

Abstract: A formulation of markers for the identification of liquids is provided. Formulation includes a marker which has a high molar absorptivity in the wavelength range of 600-1000 nm. The invention further provides for a combination marker including a marker with known absorbtivity within a wavelength range and a molecular marker including various molecular formulations and isotopic markers used in conjunction. The invention further provides a method of testing for a marked liquid which employs the testing for an absorbance marker as a screening mechanism to reduce the number of tests for the molecular marker required to assure the unadulterated nature of the liquid.