An electric toothbrush comprising a cylindrical casing; at least one disposable cylinder within the casing to hold; a hollow neck affixed to the casing for permitting the flow of gel there through; and a hollow tooth implement rotatably affixed to the throat, said tooth implement comprising a brush, flosser or scraper. The method includes segmenting portfolio assets into a predetermined number of segments based on financial attributes of each asset, selecting a representative sample of assets from each segment, valuing each asset in the representative asset sample, and calculating a value of the portfolio assets for bidding purposes based on the value of each asset in the representative asset sample. The files are sorted into a list of candidate files according to metadata corresponding to each of the files. The scanning frequency of the backlight is synchronized with the input frequency of the input frames so that an illumination function and a scanning function are simultaneously performed using one backlight, a 2D image and a 3D image are efficiently displayed and crosstalk is reduced. A change in fluorescence emission intensity of the fluorophore is indicative of binding. The spliced wire also includes a stabilizer structure surrounding at least a portion of the superconductor joint, wherein the superconductor joint is in electrical contact with the stabilizer structure; and a substantially nonporous electrically conductive filler, wherein the filler substantially surrounds the superconductor joint.