Abstract: A workpiece is coated with carbonizable polymer for laser machining an aperture through the workpiece. The workpiece is protected by the polymer during laser machining so that the surface of the workpiece and areas surrounding the aperture are substantially free of debris produced by the laser machining process. The carbonized polymer is removed after laser machining. A method of forming an aperture by a laser on a thin metallic plate is also described.

Abstract: Disclosed is a compact disc recording device that includes a housing, sound receiving means for receiving audio signals, a compact disc recorder for recording onto a compact disc, and data storage structure in the housing for storing audio signals. The compact disc recording device is configured such that a music library of sound tracks is storable in the data storage structure, and the compact disc recording device includes means for selecting a set of sound tracks from the music library to be recorded onto a compact disc by the compact disc recorder. The housing includes a display which identifies at least one sound track of the music library.

Abstract: Disclosed is a compact disc recording device that includes a housing, sound receiving means for receiving audio signals, a compact disc recorder for recording onto a compact disc, and data storage structure in the housing for storing audio signals. The compact disc recording device is configured such that a music library of sound tracks is storable in the data storage structure, and the compact disc recording device includes means for selecting a set of sound tracks from the music library to be recorded onto a compact disc by the compact disc recorder. The housing includes a display which identifies at least one sound track of the music library.

Abstract: Disclosed is a music jukebox which is configured for storing a music library therein. The music jukebox includes a housing, audio input structure on the housing for receiving audio signals, audio output structure on the housing for outputting audio signals, and a data storage structure in the housing for storing audio signals. The music jukebox is configured such that a music library of sound tracks is storable in the data storage structure. The music jukebox includes means for selecting a sound track from the music library stored in the data storage structure to play through the audio output structure, and the housing includes a display thereon which identifies sound tracks in the music library. Preferably, the music jukebox is configured such that the sound tracks stored in the data storage structure are editable before being played through the audio output structure.

Abstract: A workpiece is coated with carbonizable polymer for laser machining an aperture through the workpiece. The workpiece is protected by the polymer during laser machining so that the surface of the workpiece and areas surrounding the aperture are substantially free of debris produced by the laser machining process. The carbonized polymer is removed after laser machining. A method of forming an aperture by a laser on a thin metallic plate is also described.

Abstract: Disclosed is an optical storage device in the form of a compact disc recorder which includes sound receiving means for receiving analog signals, a convertor connected to the sound receiving means for converting the received analog signals into digital data, data storage structure communicatingly connected to the convertor for receiving the digital data from the convertor and storing the digital data received, and a compact disc recordable drive communicatingly connected to the data storage structure for receiving the stored digital data from the data storage structure and recording the digital data onto a compact disc received by the compact disc recordable drive.

Abstract: Polyamide, polyurea, polyhydrazide, and polyurethane materials having substantially modified surfaces which are antimicrobial are disclosed. The disclosure also relates to selective ultraviolet (UV) photon irradiation, high energy electron irradiation low energy electron irradiation for preparing such antimicrobial, polymeric materials. The disclosure further provides methods for controlling microorganisms, and products made from the antimicrobial, polymeric materials of this invention.

Abstract: A process for hydrogenation of butadienepolyperoxide to 1,2-butanediol and 1,4-butanediol which comprises hydrogenating a mixture of butadienepolyperoxide in a solvent and with a catalyst comprising an activated phase-pure NiAl.sub.3 at a temperature of from 75.degree.-120.degree. C. and a pressure of at least 1000 psi.