Abstract: A photoelectric device is provided which incorporates a one piece housing having a first end which is light transmissive and liquid impermeable. An opening is provided at the other end of the tubular structure for insertion of photoelectric and electronic components into the cavity of the housing structure. A cover is used to seal an opening at the second end. The cover is ultrasonically welded to the second end of the tubular structure and a cable means is provided to permit electrical current to pass through the cover at the second end of the housing structure. The first end of the tubular structure, which is transmissive to visible, infrared or ultraviolet light can be formed into one or more lenses, depending on the application of the photoelectric device. Threads are provided in the outer cylindrical surface of the housing to aid in attaching the photoelectric device to brackets with the use of threaded nuts.

Abstract: The present invention is directed to a fluorescence polarization immunoassay for determining the phenylacetylglutamine (PAG) content in body fluids, to the various components needed for preparing and carrying out such an assay, and to the methods of making these components. Specifically, tracers, immunogens and antibodies are disclosed, as well as methods for preparing them. The assay is conducted by measuring the degree of polarization of plane polarized light that has been passed through a solution continuing sample, antiserum and tracer.

Abstract: A fluorescence polarization immunoassay (FPIA) for detecting the presence of one or more amphetamine-class analytes in a test sample is provided. The immunoassay uses competition between the analyte and a fluorescently labeled tracer for the binding site on an antibody specific for phenethylamine derivatives. The concentration of amphetamine-class analyte in the sample determines the amount of tracer that binds to the antibody. The amount of tracer/antibody complex formed can be quantitatively measured and is inversely proportional to the quantity of analyte in the test sample. The invention relates to tracers, to immunogens used to elicit antibodies for use as assay reagents, and to assay kits incorporating these tracers and assay reagents.

Abstract: The present invention is directed to a fluorescence polarization immunoassay for determining the phenylacetylglutamine (PAG) content in body fluids, to the various components needed for preparing and carrying out such an assay, and to the methods of making these components. Specifically, tracers, immunogens and antibodies are disclosed, as well as methods for preparing them. The assay is conducted by measuring the degree of polarization of plane polarized light that has been passed through a solution continuing sample, antiserum and tracer.

Abstract: A high temperature resistant flotation core and a high temperature resistant oil containment boom which allows for the in-situ burning of spilled or leaked oil during offshore oil spill cleanup operations are disclosed. The boom can also be used for precautionary fire containment during non-burn oil spill cleanups and can be easily recovered and redeployed.