A method of modulating hair growth andor hair thickness. The display and working structures are adjustably mounted on a cabinet pedestal that houses electronic equipment connected with components carried by the display and working area structure. The diameter of the receptacle has the following relationship to the screw diameter :D=10. A fuel-supply device may be configured to supply fuel into the first exhaust passage, and a catalyst may be disposed downstream of the fuel-supply device to convert at least a portion of the exhaust stream in the first exhaust passage into ammonia. The systems also include an optical integrating sphere to receive the filtered electromagnetic radiation and to uniformly scatter the filtered electromagnetic radiation within the optical integrating sphere, wherein the optical integrating sphere comprises an output to emit the uniformly scattered, filtered electromagnetic radiation. The generated two-dimensional images are then enrolled in a database and searched against an input image to identifying the face of the input image.