Abstract: Certain embodiments of a system for reducing backlash include a member geared for rotation in first and second directions. In various implementations, a first motor causes rotation in the first direction with an output biased to preclude space between mating gear components in the first direction, and a second motor, which is mechanically independent of the first motor, causes rotation in the second direction with an output biased to preclude space between mating gear components in the second direction.

Abstract: A camera assembly for filming the hands of a musician playing a finger board instrument includes a guiding device mounted to the finger board instrument. A stage movably engages the guiding device. A camera is mounted on the stage for filming the hands of the fingerboard user as the hands travel along the finger board. A driving device, such as a linear motor, is connected to the stage for moving the stage along the guiding device. A means for controlling the camera is also provided, either manually from a remote location or by visual tracking. A sensor senses the velocity and position of the stage and outputs a detection signal to the control means. The control means transmits command signals to the driving device for actuating movement of the camera along the guiding device.

Abstract: The present invention provides a method of detecting non-apoptotic DNA in clinical samples. In particular there is provided a novel screening methodology for the detection of colorectal carcinoma. Cancer results from genetic mutations which result in uncontrolled and unregulated cell growth. Apoptosis does not occur in cancerous cells and thus the DNA remains unfragmented. Colorectal cancer results from mutations which occur in varying sites of the DNA. Accordingly there is no ubiquitous marker specific to colorectal tumour cells. The present invention provides the finding that the presence of specific fragments of DNA can be used to diagnose cancer irrespective of the point of DNA mutation. The method includes the step of obtaining a suitable sample, extracting the DNA therefrom and then amplifying and separating the fragments by electrophoresis in order to detect the presence of banding which is indicative of non-fragmented DNA derived from cancerous cells.