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ROTATIONAL PANORAMIC RADIOGRAPHY IS A WELL-ESTABLISHED RADIOGRAPHIC TECHNIQUE THAT IS WIDELY USED IN DENTISTRY. THIS TECHNIQUE DISPLAYS THE ENTIRE MAXILLOMANDIBULAR REGION ON A SINGLE FILM. WITH THE DEVELOPMENT OF DIGITAL COMPUTERS AND SUITABLE RADIATION DETECTORS, IT HAS BECOME POSSIBLE TO DEVELOP DIGITAL SYSTEMS FOR THE RECORDING AND DISPLAY OF X-RAY IMAGES. THE PURPOSE OF THIS RESEARCH IS TO EV ...

MOTOR OPERATED GATE VALVE OPERABILITY PROBLEMS AND FAILURES AT NUCLEAR POWER PLANTS ARE A MAJOR SAFETY CONCERN AS STATEDIN NRC IE BULLETIN 85-03 AND GENERIC LETTER 89-10. THIS PROPOSAL IS AIMED AT IMPROVING GATE VALVE PERFORMANCE BY (1) DEVELOPING COMPREHENSIVE PERFORMANCE PREDICTION MODELS FOR USE OVER A RANGE OF OPERATING CONDITIONS, (2) DEFINING LIMITS, BASED ON SPECIFIC DESIGNS, BEYOND WHICH E ...

THE GOAL OF THIS RESEARCH IS TO DEVELOP AND ADAPT VESTEC CORPORATION'S "UNIVERSAL INTERFACE" TO COUPLE CONVENTIONAL HIGH-PERFORMANCE LIQUID CHROMATOGRAPHY (HPLC) TO ELECTROSPRAY MASS SPECTROMETRY. THE INTERFACE, WHICH HAS BEEN SUCCESSFULLY APPLIED TO COUPLING REVERSED-PHASE HPLC AT FLOW RATES AS HIGH AS 1.5 ML/MIN OF AQUEOUS EFFLUENT TO ELECTRON IMPACT MASS SPECTROMETRY, PRODUCES AN AEROSOL OF DRO ...

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DEVELOPMENT ASSOCIATES, INC., WILL CONDUCT A R&D EFFORT TOWARD DEVELOPING, FIELD TESTING, AND DISSEMINATING CULTURALLY APPROPRIATE TRAINING PACKAGES DIRECTED AT BLACK, HISPANIC, AND/OR NATIVE AMERICAN PARENTS OF POTENTIAL ADOLESCENT ABUSERS. THE PACKAGE WOULD BE IMPLEMENTED AS A SINGLE 2-HOUR SESSION OR AS TWO 1-HOUR SESSIONS AND DISSEMINATED THROUGH SCHOOLS, CHURCHES, HEALTH CENTERS, ATHLETIC ORG ...

THE HUMAN RETROVIRUSES THAT HAVE BEEN EXTENSIVELY CHARACTERIZED (HTLV-I, HTLV-II, HIV-1, AND HIV-2) ALL HAVE ATROPISM FOR THE PERIPHERAL BLOOD MONONUCLEAR CELLS (PBMC). SEROLOGICAL ASSAYS HAVE BEEN USED QUITE SUCCESSFULLY TO IDENTIFY PERSONS WITH PRIOR EXPOSURE TO THESE VIRUSES, BUT THEY FAIL TO DETERMINE A CURRENT INFECTION. VIRUS ISOLATION ASSAYS REQUIRE PROLONGED CO-CULTIVATION OF PATIENTS' PBM ...

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TRANS-LINGUA COMMUNICATIONS, INC., PLANS TO PRODUCE AND VALIDATE A SUBSTANCE ABUSE PREVENTION PROGRAM USING SOUND PORTRAITS (COLLAGES OF AUDIOTAPE SEGMENTS) FROM INTERVIEWS WITH EX-ABUSERS, SIBLINGS, PARENTS, AND PROFESSIONALS ON THE CULTURAL, SOCIAL, ETHNIC, PSYCHOLOGICAL, AND ECONOMIC INFLUENCES LEADING TO SUBSTANCE ABUSE AND RECOVERY. DESIGNED TO INFORM AND HELP EMPOWER LISTENERS, THE AUDIOTAPE ...

IT IS PLANNED TO DEVELOP A MINIATURIZED SURFACE ACOUSTIC WAVE (SAW) VAPOR DETECTION SYSTEM AS A PERSONAL MONITOR FOR TOXIC ORGANIC VAPORS. THE SAW SENSORS ARE VERY PROMISING ASTHEY CAN BE MADE VERY SENSITIVE TO ESSENTIALLY ANY TOXIC ORGANIC COMPOUND WITH AT LEAST MODEST VAPOR PRESSURE. THEY CAN DETECT SOLVENTS SUCH AS BENZENE AND DICHLOROETHANE IN THE LOW PPM RANGE AND MANY OF THE HIGH MOLECULAR, ...