Abstract: A unique "double-sided" sheet product is described which is surfaced on two sides with releaseable adhesive, but which allows for differential releaseability from the surfaces to which it is attached, and is constructed such that the user is able to control completely which of the surfaces is to be preferentially detached from the product. A sheet of flexible material with two principal sides has adhesives attached to those sides for releaseable adherence of the sheet to two separate objects, with the sides having a different degrees of releaseability. The difference in releaseability can be obtained by either or both chemical or physical means, including adhesive composition, density, areal extent and positioning. The sheets may be in elongated tape form or more squarish or rectangular note form. Either or both adhesives may be formed as single bodies or a plurality of bodies on their respective sides of the sheet.

Abstract: A bright light mask system for shining a high intensity light into a subject's eyes at preselected time periods to modify circadian rhyhyms. The system includes a mask adapted to be worn by the subject for covering the subject's eyes regardless of body position. The mask includes at least one light admitting aperture that is transparent to light energy. A light source is coupled to the aperture for generating and directing light into the subject's eyes. A light intensity of at least 2000 LUX of light having a wavelength in the range of 500 to 600 nanometers is delivered to each of the subject's eyes. A controller dictates the intensity of the light generated and the timing during which the light is on.

Abstract: This invention relates to a process for preparing erythromycin ethyl carbonate and to erythromycin ethyl carbonate produced thereby.