FN Thomson Reuters Web of Science™ VR 1.0 PT J AU SPICER, CW HOLDREN, MW SMITH, DL HUGHES, DP SMITH, MD AF SPICER, CW HOLDREN, MW SMITH, DL HUGHES, DP SMITH, MD TI CHEMICAL-COMPOSITION OF EXHAUST FROM AIRCRAFT TURBINE-ENGINES SO JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME LA English DT Article; Proceedings Paper CT 35TH INTERNATIONAL GAS TURBINE AND AEROENGINE CONGRESS AND EXPOSITION CY JUN 11-14, 1990 CL BRUSSELS, BELGIUM AB This paper reports measurements of the chemical composition of exhaust from two aircraft turbine engines. The two engines are the F101, used on the B-1B aircraft, and the F110, used on the F-16C and F-16D aircraft. Samples were collected from each engine using a probe positioned just behind the exhaust nozzle. The measurements reported here were made at four power settings from idle to intermediate power. Exhaust composition measurements included carbon monoxide, carbon dioxide, nitrogen oxides, total hydrocarbons, and individual organic species. The principal focus of this paper is on the detailed organic species results. C1 TINKER AFB,OKLAHOMA CITY,OK 73145. TYNDALL AFB,DIV ENVIRON,PANAMA CITY,FL 32403. RP SPICER, CW (reprint author), BATTELLE MEM INST,COLUMBUS,OH 43201, USA. NR 14 TC 47 Z9 47 U1 0 U2 6 PU ASME-AMER SOC MECHANICAL ENG PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 0742-4795 J9 J ENG GAS TURB POWER JI J. Eng. Gas. Turbines Power-Trans. ASME PD JAN PY 1992 VL 114 IS 1 BP 111 EP 117 DI 10.1115/1.2906292 PG 7 WC Engineering, Mechanical SC Engineering GA HP743 UT WOS:A1992HP74300016 ER PT J AU HATSELL, CP AF HATSELL, CP TI OPTIMUM VEHICLE ACCELERATION PROFILE FOR MINIMUM HUMAN INJURY SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS LA English DT Article AB Incidence of human injury during rapid vehicular accelerations may be reduced by employing an acceleration profile that is impulsive and of high amplitude near the beginning and end of the acceleration period and relatively smooth and of low amplitude during the interposed major time segment. This result from optimum control theory, when applied to a validated aircraft ejection seat/human occupant model, reduced by an order of magnitude the injury probability predicted by that model. An idealized acceleration model retains the essential features of the optimum solution and provides rule-of-thumb guidelines for incorporation in system design. RP HATSELL, CP (reprint author), ARMSTRONG LAB,BROOKS AFB,TX 78235, USA. NR 11 TC 1 Z9 1 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0731-5090 J9 J GUID CONTROL DYNAM JI J. Guid. Control Dyn. PD JAN-FEB PY 1992 VL 15 IS 1 BP 215 EP 221 DI 10.2514/3.20821 PG 7 WC Engineering, Aerospace; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA GZ897 UT WOS:A1992GZ89700027 ER PT J AU VAISHNAV, YN KAN, LS SWENBERG, CE AF VAISHNAV, YN KAN, LS SWENBERG, CE TI APPLICATION OF HIGH-PERFORMANCE LIQUID-CHROMATOGRAPHY ASSAY FOR MONITORING KINETICS OF INTERCONVERSIONS OF STEREOISOMERS OF THYMIDINE GLYCOL SO JOURNAL OF LIQUID CHROMATOGRAPHY LA English DT Article ID THYMINE GLYCOL; ISOMERIZATION AB A reverse-phase high-performance liquid chromatography methodology was validated for rapid, sensitive and simultaneous analysis of all stereoisomers of thymidine glycol. The procedure involved direct injection of the samples on a microbore C-18 reverse-phase column with ultraviolet detection at 220 nm wavelength. The lower limits of detection for all thymidine glycol stereoisomers were close to 2.5 pmole under optimized conditions of detection and were linear up to at least 5000 pmole. The mobile phase consisted of 3% acetonitrile in water (v/v). The procedure allowed qualitative as well as quantitative measurements of pH and temperature -dependent interconversions of isomers of thymidine glycol directly (underivatized) from aqueous solution. C1 JOHNS HOPKINS UNIV,SCH HYG & PUBL HLTH,DEPT BIOCHEM,BALTIMORE,MD 21205. RP VAISHNAV, YN (reprint author), USAF,RADIOBIOL RES INST,DEPT RADIAT BIOCHEM,BETHESDA,MD 20889, USA. NR 13 TC 4 Z9 4 U1 0 U2 0 PU MARCEL DEKKER INC PI NEW YORK PA 270 MADISON AVE, NEW YORK, NY 10016 SN 0148-3919 J9 J LIQ CHROMATOGR JI J. Liq. Chromatogr. PY 1992 VL 15 IS 13 BP 2385 EP 2396 DI 10.1080/10826079208016185 PG 12 WC Biochemical Research Methods; Chemistry, Analytical SC Biochemistry & Molecular Biology; Chemistry GA JK132 UT WOS:A1992JK13200012 ER PT J AU DOLAN, MJ LATTUADA, CP MELCHER, GP ZELLMER, R ALLENDOERFER, R RINALDI, MG AF DOLAN, MJ LATTUADA, CP MELCHER, GP ZELLMER, R ALLENDOERFER, R RINALDI, MG TI COCCIDIOIDES-IMMITIS PRESENTING AS A MYCELIAL PATHOGEN WITH EMPYEMA AND HYDROPNEUMOTHORAX SO JOURNAL OF MEDICAL AND VETERINARY MYCOLOGY LA English DT Article ID COCCIDIOIDES-IMMITIS; IDENTIFICATION; CULTURES AB A previously healthy Caucasian male developed hydropneumothorax and a pleural peel filled with pleomorphic, septate hyphae. The only organism grown from cultures of the lung and pleural fluid was Coccidioides immitis, confirmed by exoantigen testing. Spherule-endospore forms were produced, however, following injection of the arthroconidial tissue isolate into BALB/c mice. The patient had a positive immunodiffusion complement-fixation test and developed a positive coccidioidin skin test during therapy. He recovered following thoracotomy and wedge resection of the ruptured coccidioidal cavity, and therapy with amphotericin B followed by fluconazole. The sole presence of the mycelial form of the dimorphic fungus C. immitis in the pleural space may have been due to a low CO2 partial pressure at that site secondary to a bronchopleural fistula. The case shows a distinctive and uncommon presentation of coccidioidomycosis which demonstrates the specificity of both the immunodiffusion complement-fixation assay in diagnosing this disease and the exoantigen test in confirming culture results. C1 AUDIE L MURPHY MEM VET ADM MED CTR,MYCOL REFERENCE LAB,SAN ANTONIO,TX 78284. AUDIE L MURPHY MEM VET ADM MED CTR,DEPT MICROBIOL,SAN ANTONIO,TX 78284. WILFORD HALL USAF MED CTR,DEPT PATHOL,LACKLAND AFB,TX 78236. RP DOLAN, MJ (reprint author), WILFORD HALL USAF MED CTR,DEPT INFECT DIS,LACKLAND AFB,TX 78236, USA. NR 20 TC 14 Z9 14 U1 0 U2 0 PU BLACKWELL SCIENCE LTD PI OXFORD PA OSNEY MEAD, OXFORD, OXON, ENGLAND OX2 0EL SN 0268-1218 J9 J MED VET MYCOL JI J. Med. Vet. Mycol. PY 1992 VL 30 IS 3 BP 249 EP 255 PG 7 WC Mycology SC Mycology GA JG322 UT WOS:A1992JG32200008 PM 1517961 ER PT J AU LEDNEY, GD MADONNA, GS MOORE, MM ELLIOTT, TB BROOK, I AF LEDNEY, GD MADONNA, GS MOORE, MM ELLIOTT, TB BROOK, I TI SYNTHETIC TREHALOSE DICORYNOMYCOLATE AND ANTIMICROBIALS INCREASE SURVIVAL FROM SEPSIS IN MICE IMMUNOCOMPROMISED BY RADIATION AND TRAUMA SO JOURNAL OF MEDICINE LA English DT Article DE ANTIMICROBIALS; IMMUNOMODULATOR; RADIATION; SEPSIS; TOPICAL ANTIMICROBIALS; WOUND AB When mammalian antimicrobial defenses are compromised by radiation, death from sepsis may occur. Tissue trauma in irradiated hosts significantly increases mortality from bacterial infections and makes antimicrobial treatments more difficult than when individuals are subjected to trauma or radiation alone. We determined that postirradiation therapy with the immunomodulator synthetic trehalose dicorynomycolate (S-TDCM) and antimicrobials increases survival in mice after lethal irradiation and tissue trauma. Single agent therapy with systemic oxacillin, gentamicin, ofloxacin, and S-TDCM did not increase survival. Topical treatment of the injury with gentamicin cream in addition to systemic therapy with oxacillin or S-TDCM was necessary to enhance survival. Therapy with gentamicin and S-TDCM had a synergistic effect on survival. Therapies combining augmentation of non-specific host defense mechanisms with antimicrobials may be valuable in treating irradiated patients also sustaining tissue trauma. RP LEDNEY, GD (reprint author), USAF,RADIOBIOL RES INST,DEPT EXPTL HEMATOL,BETHESDA,MD 20889, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU P J D PUBLICATIONS LTD PI WESTBURY PA PO BOX 966, WESTBURY, NY 11590 SN 0025-7850 J9 J MED JI J. Med. PY 1992 VL 23 IS 3-4 BP 253 EP 264 PG 12 WC Medicine, Research & Experimental SC Research & Experimental Medicine GA KA937 UT WOS:A1992KA93700006 PM 1479303 ER PT J AU PAINE, LL TINKER, DD AF PAINE, LL TINKER, DD TI THE EFFECT OF MATERNAL BEARING-DOWN EFFORTS ON ARTERIAL UMBILICAL-CORD PH AND LENGTH OF THE 2ND STAGE OF LABOR SO JOURNAL OF NURSE-MIDWIFERY LA English DT Article AB This study was conducted to compare two types of maternal bearing-down techniques as they relate to the fetal and maternal outcomes of arterial umbilical cord blood pH and length of the second stage of labor. A convenience sample was drawn from the laboring women at a 305-bed medical center who met specific inclusion criteria. Women self-selected to one of two bearing-down groups: spontaneous or Valsalva. Subjects were given specific instructions for the chosen method. The Valsalva group was comprised of 14 subjects, and the spontaneous group was comprised of 16 subjects. The groups were found to be comparable after analysis of several variables. Results of statistical analysis using t-test indicated that, in this small sample, there is no relationship between the second stage bearing-down method and arterial umbilical cord blood pH or length of the second stage of labor. These findings support the conclusions of several studies: using the spontaneous bearing-down method does not have a deleterious effect upon the mother or the fetus. Several recommendations are made for future research based on methodological issues raised during this study. C1 PHOENIX INDIAN MED CTR,DEPT OBSTET & GYNECOL,4212 N 16TH ST,PHOENIX,AZ 85016. USAF,NURSE MIDWIFERY PROGRAM,WASHINGTON,DC. US PHS,INDIAN HLTH SERV,PHOENIX,AZ. BOSTON UNIV,SCH PUBL HLTH,NURSE MIDWIFERY EDUC PROGRAM,BOSTON,MA 02215. GEORGETOWN UNIV,MIDWIFERY PROGRAM USAF,NURSE MIDWIFERY PROGRAM,WASHINGTON,DC 20057. NR 6 TC 6 Z9 6 U1 0 U2 0 PU ELSEVIER SCIENCE INC PI NEW YORK PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 SN 0091-2182 J9 J NURSE-MIDWIFERY JI J. Nurse-Midwifery PD JAN-FEB PY 1992 VL 37 IS 1 BP 61 EP 63 DI 10.1016/0091-2182(92)90023-V PG 3 WC Nursing SC Nursing GA HB742 UT WOS:A1992HB74200008 PM 1538270 ER PT J AU KINSELLA, JP MCCURNIN, DC CLARK, RH LALLY, KP NULL, DM AF KINSELLA, JP MCCURNIN, DC CLARK, RH LALLY, KP NULL, DM TI CARDIAC-PERFORMANCE IN ECMO CANDIDATES - ECHOCARDIOGRAPHIC PREDICTORS FOR ECMO SO JOURNAL OF PEDIATRIC SURGERY LA English DT Article DE EXTRACORPOREAL MEMBRANE OXYGENATION ECMO; HIGH-FREQUENCY OSCILLATORY VENTILATION; ECHOCARDIOGRAPHY ID EXTRACORPOREAL MEMBRANE-OXYGENATION; FREQUENCY OSCILLATORY VENTILATION; INFANTS; OUTPUT C1 WILFORD HALL USAF MED CTR,DEPT PEDIAT,LACKLAND AFB,TX 78236. WILFORD HALL USAF MED CTR,DEPT SURG,LACKLAND AFB,TX 78236. SW FDN BIOMED RES,DEPT PHYSIOL & MED,SAN ANTONIO,TX 78284. RI Povoroznyuk, Vladislav/A-7748-2016; Nykyforak, Mykhailo/D-4656-2016; Huralenko, Nataliia/D-5057-2016; Kurpayanidi, Konstantin/Q-5596-2016 OI Povoroznyuk, Vladislav/0000-0002-9770-4113; Nykyforak, Mykhailo/0000-0003-3466-9725; Huralenko, Nataliia/0000-0003-0884-215X; Kurpayanidi, Konstantin/0000-0001-8354-1512 FU NHLBI NIH HHS [HL36536] NR 12 TC 21 Z9 21 U1 0 U2 0 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0022-3468 J9 J PEDIATR SURG JI J. Pediatr. Surg. PD JAN PY 1992 VL 27 IS 1 BP 44 EP 47 DI 10.1016/0022-3468(92)90102-D PG 4 WC Pediatrics; Surgery SC Pediatrics; Surgery GA GY961 UT WOS:A1992GY96100012 PM 1552443 ER PT J AU ATKINSON, JB FORD, EG KITAGAWA, H LALLY, KP HUMPHRIES, B AF ATKINSON, JB FORD, EG KITAGAWA, H LALLY, KP HUMPHRIES, B TI PERSISTENT PULMONARY-HYPERTENSION COMPLICATING CYSTIC ADENOMATOID MALFORMATION IN NEONATES SO JOURNAL OF PEDIATRIC SURGERY LA English DT Article DE CYSTIC ADENOMATOID MALFORMATION; PERSISTENT PULMONARY HYPERTENSION ID CONGENITAL DIAPHRAGMATIC-HERNIA C1 WILFORD HALL USAF MED CTR,DEPT SURG,LACKLAND AFB,TX 78236. RP ATKINSON, JB (reprint author), UNIV SO CALIF,CHILDRENS HOSP,SCH MED,DIV PEDIAT SURG,4650 SUNSET BLVD,LOS ANGELES,CA 90027, USA. NR 6 TC 12 Z9 12 U1 0 U2 3 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0022-3468 J9 J PEDIATR SURG JI J. Pediatr. Surg. PD JAN PY 1992 VL 27 IS 1 BP 54 EP 56 PG 3 WC Pediatrics; Surgery SC Pediatrics; Surgery GA GY961 UT WOS:A1992GY96100014 PM 1552445 ER PT J AU COOLEY, DR VANDELLEN, AF BURGESS, JO WINDELER, AS AF COOLEY, DR VANDELLEN, AF BURGESS, JO WINDELER, AS TI THE ADVANTAGES OF COATED TITANIUM IMPLANTS PREPARED BY RADIOFREQUENCY SPUTTERING FROM HYDROXYAPATITE SO JOURNAL OF PROSTHETIC DENTISTRY LA English DT Article ID HYDROXYLAPATITE INTERFACE; BONE; TISSUE AB The method used to apply hydroxyapatite to implant surfaces may affect the thickness and ultimately the physical properties of the coating. This study investigated and compared the healing rates of bone around commercially pure titanium implants and titanium implants sputter-coated from a hydroxyapatite target. Forty-five sputter-coated implants and an equal number of noncoated titanium implants were placed into 15 partially edentulated dog mandibles. The implants were removed at three time periods and were evaluated mechanically and histologically. A multiple analysis of variance indicated that the interface bond strength was statistically greater (p < 0.01) for the sputter-coated implants. Histologic analysis of the bone-implant interface demonstrated that coated implants had nearly twice the percentage of direct bone contact compared with noncoated implants. The results indicate that implants sputter-coated from a hydroxyapatite target will accelerate the healing of bone at the implant interface. C1 WILFORD HALL USAF MED CTR,SAN ANTONIO,TX. UNIV TEXAS,HLTH SCI CTR,SCH DENT,DEPT RESTORAT DENT,DIV BIOMAT,SAN ANTONIO,TX 78284. UNIV TEXAS,HLTH SCI CTR,SCH DENT,DEPT RESTORAT DENT,DIV FIXED PROTHODONT,SAN ANTONIO,TX 78284. NR 24 TC 72 Z9 72 U1 0 U2 0 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0022-3913 J9 J PROSTHET DENT JI J. Prosthet. Dent. PD JAN PY 1992 VL 67 IS 1 BP 93 EP 100 DI 10.1016/0022-3913(92)90057-H PG 8 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA GZ690 UT WOS:A1992GZ69000022 PM 1312597 ER PT J AU CRONIN, RJ AF CRONIN, RJ TI RESTORATIVE CONSIDERATIONS FOR A FIXED IMPLANT PROSTHESIS USING DIFFERENT ROOT FORM IMPLANT SYSTEMS SO JOURNAL OF PROSTHETIC DENTISTRY LA English DT Article AB A precise fit at the prosthesis attachment interface is necessary to assure atraumatic loading of the implant fixture. The required high degree of frame accuracy can be more difficult to achieve when a single fixed prosthesis uses different root form implant systems for support. Two clinical protocols are described for these fixed implant prostheses. The first protocol uses a semiprecision attachment for the restorations. The second protocol uses a modified abutment system and a one-piece frame design. RP CRONIN, RJ (reprint author), WILFORD HALL USAF MED CTR,DEPT PROSTHODONT,SGDP,LACKLAND AFB,TX 78236, USA. NR 24 TC 0 Z9 0 U1 0 U2 1 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0022-3913 J9 J PROSTHET DENT JI J. Prosthet. Dent. PD JAN PY 1992 VL 67 IS 1 BP 124 EP 129 DI 10.1016/0022-3913(92)90062-F PG 6 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA GZ690 UT WOS:A1992GZ69000027 PM 1548596 ER PT J AU RUSSELL, IJ MICHALEK, JE VIPRAIO, GA FLETCHER, EM JAVORS, MA BOWDEN, CA AF RUSSELL, IJ MICHALEK, JE VIPRAIO, GA FLETCHER, EM JAVORS, MA BOWDEN, CA TI PLATELET H-3 IMIPRAMINE UPTAKE RECEPTOR DENSITY AND SERUM SEROTONIN LEVELS IN PATIENTS WITH FIBROMYALGIA FIBROSITIS SYNDROME SO JOURNAL OF RHEUMATOLOGY LA English DT Article DE FIBROSITIS; FIBROMYALGIA; SEROTONIN; IMIPRAMINE; PLATELETS; MONOAMINE OXIDASE ID MONOAMINE-OXIDASE ACTIVITY; IMIPRAMINE BINDING-SITES; HIGH-AFFINITY BINDING; CLINICAL CHARACTERISTICS; AFFECTIVE-DISORDERS; DEPRESSED-PATIENTS; CHRONIC PAIN; SUBSTANCE-P; IMIPRAMINE; BIOCHEMISTRY AB The density of serotonin reuptake receptors on peripheral platelets from 22 patients with primary fibromyalgia syndrome (FS) and the serum serotonin concentrations in 9 patients with FS were compared with those of matched healthy controls. The mean serum serotonin concentration was lower (p = 0.01) in FS than in controls, while the binding of H-3-imipramine was higher (p = 0.035) and normalized with treatment using a combination of ibuprofen and alprazolam. Improvement in selected clinical measures of FS disease activity during treatment correlated with the change in platelet H-3-imipramine binding. These findings support the proposed hypothesis of aberrant pain perception in FS resulting from a deficiency of serotonin. C1 UNIV TEXAS,HLTH SCI CTR,DEPT PSYCHIAT,SAN ANTONIO,TX 78284. UNIV TEXAS,HLTH SCI CTR,DEPT PHARMACOL,SAN ANTONIO,TX 78284. ARMSTRONG LAB,DIV EPIDEMIOL RES,BROOKS AFB,TX. RP RUSSELL, IJ (reprint author), UNIV TEXAS,HLTH SCI CTR,DEPT MED,RHEUMATOL SECT,7703 FLOYD CURL DR,SAN ANTONIO,TX 78284, USA. NR 52 TC 173 Z9 174 U1 2 U2 3 PU J RHEUMATOL PUBL CO PI TORONTO PA 920 YONGE ST, SUITE 115, TORONTO ON M4W 3C7, CANADA SN 0315-162X J9 J RHEUMATOL JI J. Rheumatol. PD JAN PY 1992 VL 19 IS 1 BP 104 EP 109 PG 6 WC Rheumatology SC Rheumatology GA HF289 UT WOS:A1992HF28900022 PM 1313504 ER PT J AU AHMADJIAN, M JENNINGS, DE MUMMA, MJ GREEN, BD DIX, BD RUSSELL, RW AF AHMADJIAN, M JENNINGS, DE MUMMA, MJ GREEN, BD DIX, BD RUSSELL, RW TI SKIRT SPACE-SHUTTLE GLOW EXPERIMENT SO JOURNAL OF SPACECRAFT AND ROCKETS LA English DT Article ID SATELLITE AB This paper describes a spectrometer/radiometer experiment to obtain infrared, visible, and ultraviolet measurements of Space Shuttle glow. The payload, Spacecraft Kinetic Infrared Test (SKIRT), is a cryogenic circular variable filter infrared spectrometer with a number of infrared, visible, and ultraviolet radiometers covering the spectral range of 0.2-5.4-mu-m and 9.9-10.3-mu-m. It will measure Shuttle glow as a function of mission elapsed time, Orbiter attitude, temperature, and Orbiter events such as thruster firings. The measured data should have sufficient spectral resolution and sensitivity to identify molecular species contributing to Shuttle glow emissions. SKIRT is manifested on STS-39. C1 NASA,GODDARD SPACE FLIGHT CTR,EXTRATERR PHYS LAB,GREENBELT,MD 20771. PHYS SCI INC,ANDOVER,MA 01810. SPACE SYST ENGN,LOGAN,UT 84321. AEROSPACE CORP,CTR SPACE & ENVIRONM TECHNOL,LOS ANGELES,CA 90009. RP AHMADJIAN, M (reprint author), USAF,SYST COMMAND,PHILLIPS LAB,GEOPHYS DIRECTORATE,DIV OPT ENVIRONM,BEDFORD,MA 01731, USA. RI Jennings, Donald/D-7978-2012; mumma, michael/I-2764-2013 NR 11 TC 4 Z9 4 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0022-4650 J9 J SPACECRAFT ROCKETS JI J. Spacecr. Rockets PD JAN-FEB PY 1992 VL 29 IS 1 BP 102 EP 107 DI 10.2514/3.26320 PG 6 WC Engineering, Aerospace SC Engineering GA HD174 UT WOS:A1992HD17400013 ER PT J AU BURKHARD, AH LEAK, CE AF BURKHARD, AH LEAK, CE TI DURABILITY ANALYSIS USING FRACTURE-MECHANICS FOR AVIONICS INTEGRITY SO JOURNAL OF THE IES LA English DT Article AB Avionic assemblies are complex hybrid structures formed out of many dissimilar materials that have been joined together to accomplish the desired electronic function. The structural integrity of these complex microscale structures is critical to the reliability of the electronic system. This paper discusses the principal results of a research program to investigate the application of fracture mechanics techniques for life prediction to these small structures. RP BURKHARD, AH (reprint author), USAF,WRIGHT AERONAUT LABS,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU INST ENVIRONMENTAL SCI PI MT PROSPECT PA 940 E NORTHWEST HIGHWAY, MT PROSPECT, IL 60056 SN 1052-2883 J9 J IES JI J. IES PD JAN-FEB PY 1992 VL 35 IS 1 BP 26 EP 32 PG 7 WC Engineering, Environmental; Environmental Sciences; Instruments & Instrumentation SC Engineering; Environmental Sciences & Ecology; Instruments & Instrumentation GA HF706 UT WOS:A1992HF70600004 ER PT J AU DRAKES, JA HIERS, RS REED, RA AF DRAKES, JA HIERS, RS REED, RA TI DOPPLER-SHIFT EFFECTS ON INFRARED BAND MODELS SO JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER LA English DT Article AB Band-model calculations typically are employed in the analysis of low-spectral-resolution radiometer, photometer, and spectrometer measurements of hot-gas emission and absorption. Although they are not used to compute the profiles of individual lines directly, nevertheless, band models are sensitive to line shape. This line-shape sensitivity causes the net band-model emission and absorption to be sensitive to Doppler shift effects. This paper reviews the treatment of Doppler shifts on a Voigt profile spectral line, and then generalizes this result to the curve of growth, i.e., equivalent width, for both single-line and infrared band models. Finally, a synthetic spectrum for the CO2 4.3-mu band is computed with and without Doppler shifts to illustrate the magnitude of the effect. It is found that band-model computations are unaffected by Doppler shift in the limiting cases of small and large absorber amounts. In the case of intermediate absorber amounts, significant effects are predicted for hypersonic flows. C1 SVERDRUP TECHNOL INC, ARNOLD ENGN & DEV CTR, AEDC GRP, ARNOLD AFB, TN 37389 USA. NR 16 TC 1 Z9 2 U1 0 U2 1 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA SN 0887-8722 J9 J THERMOPHYS HEAT TR JI J. Thermophys. Heat Transf. PD JAN-MAR PY 1992 VL 6 IS 1 BP 44 EP 47 DI 10.2514/3.316 PG 4 WC Thermodynamics; Engineering, Mechanical SC Thermodynamics; Engineering GA HX492 UT WOS:A1992HX49200006 ER PT J AU MICHALEK, JE TRIPATHI, RC CAUDILL, SP PIRKLE, JL AF MICHALEK, JE TRIPATHI, RC CAUDILL, SP PIRKLE, JL TI INVESTIGATION OF TCDD HALF-LIFE HETEROGENEITY IN VETERANS OF OPERATION RANCH HAND SO JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH LA English DT Article ID POLYCHLORINATED-BIPHENYLS; HUMAN-SERUM; 2,3,7,8-TETRACHLORODIBENZO-P-DIOXIN; VIETNAM; WEIGHT; HEALTH AB The half-life of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD), the contaminant of Agent Orange, has been recently estimated in 36 members of Operation Ranch Hand, the Air Force unit responsible for the aerial spraying of Agent Orange in Vietnam, as 7.1 yr with a 90% confidence interval of 5.8-9.6 yr. We investigated the variability of TCDD half-life with percent body fat in these 36 Ranch Hand veterans who have two TCDD assay results from serum drawn in 1982 and 1987. Using a repeated measures linear model, we found a marginally significant change in half-life with percentage of body fat (p = .09) and no statistically significant change in half-life with relative changes in percentage of body fat from 1982 to 1987 (p = .60). C1 UNIV TEXAS,DIV MATH COMP SCI & STAT,SAN ANTONIO,TX 78285. CTR DIS CONTROL,ATLANTA,GA 30333. RP MICHALEK, JE (reprint author), ARMSTRONG LAB,DIV EPIDEMIOL RES,BROOKS AFB,TX 78235, USA. NR 11 TC 31 Z9 31 U1 0 U2 2 PU TAYLOR & FRANCIS PI BRISTOL PA 1900 FROST ROAD, SUITE 101, BRISTOL, PA 19007-1598 SN 0098-4108 J9 J TOXICOL ENV HEALTH JI J. Toxicol. Environ. Health PD JAN PY 1992 VL 35 IS 1 BP 29 EP 38 PG 10 WC Environmental Sciences; Public, Environmental & Occupational Health; Toxicology SC Environmental Sciences & Ecology; Public, Environmental & Occupational Health; Toxicology GA GZ878 UT WOS:A1992GZ87800004 PM 1728664 ER PT J AU RAAB, S BERG, L SWANSON, PE WICK, MR AF RAAB, S BERG, L SWANSON, PE WICK, MR TI IMMUNOHISTOCHEMICAL CLASSIFICATION OF LUNG ADENOCARCINOMAS IN PATIENTS WITH A HISTORY OF BREAST-CARCINOMA SO LABORATORY INVESTIGATION LA English DT Meeting Abstract C1 WASHINGTON UNIV,SCH MED,DEPT PATHOL,ST LOUIS,MO 63110. E CAROLINA UNIV,MED CTR,DEPT PATHOL,GREENVILLE,NC 27834. WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. NR 0 TC 0 Z9 0 U1 0 U2 0 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0023-6837 J9 LAB INVEST JI Lab. Invest. PD JAN PY 1992 VL 66 IS 1 BP A116 EP A116 PG 1 WC Medicine, Research & Experimental; Pathology SC Research & Experimental Medicine; Pathology GA HA276 UT WOS:A1992HA27600697 ER PT J AU LUGINBUHL, DR CARDOW, JE AF LUGINBUHL, DR CARDOW, JE TI TEACHING SOFTWARE-VERIFICATION AND VALIDATION TO SOFTWARE PRACTITIONERS SO LECTURE NOTES IN COMPUTER SCIENCE LA English DT Article AB We describe the development and teaching of a two-week course in software verification and validation (V&V). The course is taught to Air Force software practitioners by faculty at the Air Force Institute of Technology (AFIT). We show that by organizing teaching materials using a framework involving interrelationships of activities throughout the software development life cycle, we were able to significantly enhance the development and teaching of the course. Such an organization is logical since V&V pervades all activities in every part of the life cycle. RP LUGINBUHL, DR (reprint author), USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433, USA. NR 6 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0302-9743 J9 LECT NOTES COMPUT SC JI Lect. Notes Comput. Sci. PY 1992 VL 640 BP 167 EP 179 PG 13 WC Computer Science, Theory & Methods SC Computer Science GA LF699 UT WOS:A1992LF69900011 ER PT J AU DIPPOLITO, RS LEE, KJ PLINTA, CP STEWART, JA BAILOR, PD HARTRUM, TC AF DIPPOLITO, RS LEE, KJ PLINTA, CP STEWART, JA BAILOR, PD HARTRUM, TC TI PUTTING THE ENGINEERING INTO SOFTWARE ENGINEERING - A TUTORIAL FOR THE 6TH SEI CONFERENCE ON SOFTWARE ENGINEERING-EDUCATION SO LECTURE NOTES IN COMPUTER SCIENCE LA English DT Editorial Material C1 USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,WRIGHT PATTERSON AFB,OH 45433. RP DIPPOLITO, RS (reprint author), CARNEGIE MELLON UNIV,INST SOFTWARE ENGN,SOFTWARE ARCHITECTURES ENGN PROJECT,TECH STAFF,PITTSBURGH,PA 15213, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0302-9743 J9 LECT NOTES COMPUT SC JI Lect. Notes Comput. Sci. PY 1992 VL 640 BP 287 EP 289 PG 3 WC Computer Science, Theory & Methods SC Computer Science GA LF699 UT WOS:A1992LF69900017 ER PT J AU BAILOR, PD HARTRUM, TC AF BAILOR, PD HARTRUM, TC TI EDUCATING MODEL-BASED SOFTWARE ENGINEERS SO LECTURE NOTES IN COMPUTER SCIENCE LA English DT Article RP BAILOR, PD (reprint author), USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,WRIGHT PATTERSON AFB,OH 45433, USA. NR 12 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0302-9743 J9 LECT NOTES COMPUT SC JI Lect. Notes Comput. Sci. PY 1992 VL 640 BP 290 EP 297 PG 8 WC Computer Science, Theory & Methods SC Computer Science GA LF699 UT WOS:A1992LF69900018 ER PT J AU SARKAR, AK TANG, YJ CAO, XW HO, JC KOZLOWSKI, G AF SARKAR, AK TANG, YJ CAO, XW HO, JC KOZLOWSKI, G TI ROLE OF CALCIUM PLUMBATE DURING THE FORMATION OF 2223 PHASE IN THE BI(PB)-SR-CA-CU-O SYSTEM SO MATERIALS RESEARCH BULLETIN LA English DT Article DE CALCIUM; BISMUTH; PLUMBATES; CUPRATES; SUPERCONDUCTORS ID CU-O AB There are conflicting reports regarding the melting point of Ca2PbO4 in the literature. By performing differential thermal analysis under various atmospheres, we found that the melting point of Ca2PbO4 is severely depressed due to the reduced partial pressure of oxygen. At an oxygen partial pressure of one atm., Ca2PbO4 melts at 1055-degrees-C and this temperature is reduced to about 833-degrees-C in zero oxygen partial pressure (e.g. in nitrogen). Ca2PbO4 is formed as an impurity in the initial stage during the preparation of pure 2223 phase from the Bi(Pb)-Sr-Ca-Cu-O system in air. However, the usual sintering temperatures (840-degrees-850-degrees-C) at which the 2223 phase is synthesized in air are not high enough to melt Ca2PbO4. Thus, the melting of Ca2PbO4 is not responsible for the growth of 2223 phase from a liquid medium. Ca2PbO4 and the lead-enriched 2223 phase were found to be compatible with each other at 845-degrees-C in air. Utilization of reduced partial pressure of oxygen will inhibit the growth of Ca2PbO4 and promote the formation of the lead-containing, 2223 phase by modifying the reaction paths that would not otherwise be possible if higher oxygen partial pressure were used. C1 WICHITA STATE UNIV,WICHITA,KS 67208. WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433. RP SARKAR, AK (reprint author), UNIV DAYTON,RES INST,300 COLL PK AVE,DAYTON,OH 45469, USA. NR 11 TC 9 Z9 9 U1 0 U2 2 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0025-5408 J9 MATER RES BULL JI Mater. Res. Bull. PD JAN PY 1992 VL 27 IS 1 BP 1 EP 8 DI 10.1016/0025-5408(92)90036-Y PG 8 WC Materials Science, Multidisciplinary SC Materials Science GA GX250 UT WOS:A1992GX25000001 ER PT J AU LOUI, MC LUGINBUHL, DR AF LOUI, MC LUGINBUHL, DR TI THE COMPLEXITY OF ONLINE SIMULATIONS BETWEEN MULTIDIMENSIONAL TURING-MACHINES AND RANDOM-ACCESS MACHINES SO MATHEMATICAL SYSTEMS THEORY LA English DT Article AB To study different implementations of arrays, we present four results on the time complexities of on-line simulations between multidimensional Turing machines and random access machines (RAMs). First, every d-dimensional Turing machine of time complexity t can be simulated by a log-cost RAM running in O(t(log t)1-(1/d)(log log t)1/d) time. Second, every d-dimensional Turing machine of time complexity t can be simulated by a unit-cost RAM running in O(t/(log t)1/d) time, provided that the input length is o(t/(log t)1/d) . Third, there is a log-cost RAM R of time complexity 0(n), where n is the input length, such that, for any d-dimensional Turing machine M that simulates R on-line, M requires OMEGA(n1+(1/d)/(log n(log log n)1+(1/d))) time. Fourth, every unit-cost RAM of time complexity t can be simulated by a d-dimensional Turing machine in O(t2(log t)1/2) time if d=2, and in O(t2) time if d greater-than-or-equal-to 3. This result uses the weight-balanced trees of Nievergelt and Reingold. C1 UNIV ILLINOIS,BECKMAN INST,URBANA,IL 61801. NATL SCI FDN,WASHINGTON,DC 20550. UNIV MARYLAND,INST ADV COMP STUDIES,COLL PK,MD 20742. USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,WRIGHT PATTERSON AFB,OH 45433. RP LOUI, MC (reprint author), UNIV ILLINOIS,COORDINATED SCI LAB,DEPT ELECT & COMP ENGN,URBANA,IL 61801, USA. NR 26 TC 3 Z9 3 U1 0 U2 0 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0025-5661 J9 MATH SYST THEORY JI Math. Syst. Theory PY 1992 VL 25 IS 4 BP 293 EP 308 DI 10.1007/BF01213861 PG 16 WC Computer Science, Theory & Methods; Mathematics SC Computer Science; Mathematics GA JG684 UT WOS:A1992JG68400004 ER PT J AU SEMIATIN, SL MCQUAY, PA AF SEMIATIN, SL MCQUAY, PA TI SEGREGATION AND HOMOGENIZATION OF A NEAR-GAMMA-TITANIUM ALUMINIDE SO METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE LA English DT Article ID SOLIDIFICATION AB The nature of microsegregation and the kinetics of homogenization for wrought ingot-metallurgy near-gamma titanium aluminides were investigated experimentally and theoretically. This included heat treatments of the alloy Ti-47 Al-2.5Nb-0.3Ta (in atomic percent) in the two-phase (alpha + gamma) and single-phase (alpha) regimes and subsequent electron microprobe analysis to determine the composition of the microstructural constituents. The equivalence of the composition of the gamma constituent in both the single-phase bands and two-phase (alpha-two + gamma) regions of the as-received material and in microstructures developed during subtransus heat treatment revealed that the observed microsegregation is principally morphological in character. Measurements of the kinetics of gamma grain dissolution above the transus temperature, coupled with microprobe measurements of concentration profiles, were used to conclude that the rate-controlling mechanism for homogenization of the near-gamma titanium aluminides is a reaction at alpha-gamma interfaces rather than diffusion-limited dissolution of the gamma constituent. This conclusion was supported by estimates of the interdiffusion coefficient using a spherical-infinite model for gamma-phase dissolution and finite difference calculations of the rate at which concentration gradients in both the alpha and gamma phases would be expected to dampen via diffusional processes. C1 WRIGHT LAB,MAT DIRECTORATE,DIV MET & CERAM,WRIGHT PATTERSON AFB,OH 45433. RP SEMIATIN, SL (reprint author), BATTELLE MEM INST,DEPT MET & CERAM,COLUMBUS,OH 43201, USA. RI SEMIATIN, SHELDON/E-7264-2017 NR 18 TC 35 Z9 37 U1 0 U2 6 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 0360-2133 J9 METALL TRANS A PD JAN PY 1992 VL 23 IS 1 BP 149 EP 161 DI 10.1007/BF02660861 PG 13 WC Materials Science, Multidisciplinary SC Materials Science GA HB948 UT WOS:A1992HB94800018 ER PT J AU SEMIATIN, SL LARK, KA BARKER, DR SEETHARAMAN, V MARQUARDT, B AF SEMIATIN, SL LARK, KA BARKER, DR SEETHARAMAN, V MARQUARDT, B TI PLASTIC-FLOW BEHAVIOR AND MICROSTRUCTURAL DEVELOPMENT IN A CAST ALPHA-2 TITANIUM ALUMINIDE SO METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE LA English DT Article ID CREEP-BEHAVIOR; TI-6AL-2SN-4ZR-2MO-0.1SI; INTERMETALLICS AB Plastic-flow behavior and microstructural development were investigated for a cast alpha(2) titanium aluminide, Ti-24Al-11Nb (atomic percent), using the isothermal hot-compression test. Regimes of warm- and hot-working behavior were inferred from flow curves adjusted for deformation heating effects. Plots of flow stress as a function of inverse temperature and estimates of the strain-rate-sensitivity index confirmed the transition from warm to hot-working conditions over a rather narrow temperature range. Hot working in the alpha(2) + beta phase field was also marked by a rather high activation energy (viz., approximately 1080 kJ/mole) for the controlling deformation process, which appeared to consist of dynamic globularization of the ordered-alpha(2) phase. A sharp decrease in the activation energy was noticed when the deformation temperature was increased above the beta-transus. Microstructural observations also indicated development of an unrecrystallized structure during warm working, with cavities and wedge cracks being found near the bulged free surfaces of the upset specimens. The plastic-flow phenomenology exhibited a number of similarities to that found in the wrought version of the Ti-24Al-11Nb alloy. C1 WRIGHT LAB, MAT DIRECTORATE, WRIGHT PATTERSON AFB, OH 45433 USA. GE AIRCRAFT ENGINES, ADV MAT DEV, CINCINNATI, OH 45215 USA. UNIVERSAL ENERGY SYST, DIV PROC SCI, DAYTON, OH 45432 USA. RI SEMIATIN, SHELDON/E-7264-2017 NR 23 TC 33 Z9 35 U1 1 U2 4 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 184 THORN HILL RD, WARRENDALE, PA 15086 USA SN 0360-2133 J9 METALL TRANS A PD JAN PY 1992 VL 23 IS 1 BP 295 EP 305 DI 10.1007/BF02660872 PG 11 WC Materials Science, Multidisciplinary SC Materials Science GA HB948 UT WOS:A1992HB94800029 ER PT J AU LEE, D WHEELOCK, JB PATRISSI, GA AF LEE, D WHEELOCK, JB PATRISSI, GA TI ENDOCERVICAL CELL RECOVERY SO MILITARY MEDICINE LA English DT Article AB Three thousand six hundred fourteen Papanicolaou smear reports were evaluated for endocervical cells and characteristics of the patients at the time the slide was taken. Differences were found related to the age of the patient, pregnancy/postpartum status, and cytology. The use of hormones when the smear was taken did not appear to affect the presence of endocervical cells. Many clinicians, believing that not obtaining endocervical cells results from failure to sample the endocervical canal, repeat those smears. This study is consistent with previous ones in finding that other factors, including patient characteristics, have a definite effect on the results. Repeating smears solely for lack of endocervical cells does not appear to be warranted for either the patient or the provider. RP LEE, D (reprint author), USAF,REG HOSP,DEPT OBSTET & GYNECOL,MATHER AFB,CA 95655, USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU ASSN MILITARY SURG US PI BETHESDA PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 SN 0026-4075 J9 MIL MED JI Milit. Med. PD JAN PY 1992 VL 157 IS 1 BP 1 EP 4 PG 4 WC Medicine, General & Internal SC General & Internal Medicine GA GZ717 UT WOS:A1992GZ71700006 PM 1603368 ER PT J AU BEIGHLEY, PS BROWN, GR AF BEIGHLEY, PS BROWN, GR TI MEDICATION REFUSAL BY PSYCHIATRIC-INPATIENTS IN THE MILITARY SO MILITARY MEDICINE LA English DT Article AB Military psychiatrists must occasionally treat mentally ill active duty patients who refuse medications. Unlike their civilian counterparts, military psychiatrists have no established procedure to allow for involuntary treatment under non-emergency conditions. The following case and discussion is presented to illustrate how existing guidelines do not allow for optimal care of some of these patients. RP BEIGHLEY, PS (reprint author), WILFORD HALL USAF MED CTR,DEPT PSYCHIAT,LACKLAND AFB,TX 78236, USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU ASSN MILITARY SURG US PI BETHESDA PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 SN 0026-4075 J9 MIL MED JI Milit. Med. PD JAN PY 1992 VL 157 IS 1 BP 47 EP 49 PG 3 WC Medicine, General & Internal SC General & Internal Medicine GA GZ717 UT WOS:A1992GZ71700018 PM 1603379 ER PT J AU SABINA, RL FISHBEIN, WN PEZESHKPOUR, G CLARKE, PRH HOLMES, EW AF SABINA, RL FISHBEIN, WN PEZESHKPOUR, G CLARKE, PRH HOLMES, EW TI MOLECULAR ANALYSIS OF THE MYOADENYLATE DEAMINASE DEFICIENCIES SO NEUROLOGY LA English DT Article ID MUSCLE ADENYLATE DEAMINASE; AMP DEAMINASE; SKELETAL-MUSCLE; BIOPSY SPECIMENS; MESSENGER-RNA; BLOOD-CELLS; CDNA; IDENTIFICATION; EXPRESSION; KINASE AB Myoadenylate deaminase (mAMPD) deficiency is a clinically heterogeneous metabolic myopathy consisting of primary (inherited) and secondary (acquired) forms based on a variety of clinical and laboratory findings. To provide a basis for delineating the underlying molecular defects in mAMPD deficiency, and as a means to test the proposal for multiple forms of the resulting disease, Northern blot analyses were performed with RNA isolated from individual patients with classified primary and secondary deficiency utilizing human mAMPD cDNA probes isolated from adult skeletal muscle libraries. Analysis of nine patients with primary mAMPD deficiency indicates normal abundance of mAMPD transcript. No immunoreactive mAMPD polypeptide is detected in Western blot analyses of skeletal muscle extracts prepared from these patients. Specificity to mAMPD is demonstrated by normal creatine kinase (CK) activities and M-creatine kinase (M-CK) transcript abundance. Similar analyses of four individuals with secondary mAMPD deficiency reveal heterogeneity in this subgroup of patients. Whereas two of these patients exhibit normal mAMPD transcript abundance, two others associated with inflammatory myopathy display reductions in mAMPD and M-CK transcript abundance. Examination of tissue sections derived from the same biopsies utilized in the isolation of RNA demonstrates the integrity of the skeletal muscle in those patients with associated inflammatory myopathy. Combined, these data support the proposal for multiple forms of mAMPD deficiency, and indicate that the primary condition is most commonly characterized by specific point mutations or small deletions/rearrangements in the ampd1 gene, whereas some patients with secondary mAMPD deficiency display more generalized aberrations in gene expression. C1 USAF,INST PATHOL,DIV BIOCHEM PATHOL,WASHINGTON,DC 20330. USAF,INST PATHOL,DIV NEUROMUSCULAR PATHOL,WASHINGTON,DC 20330. DUKE UNIV,MED CTR,DEPT MED,DURHAM,NC 27710. DUKE UNIV,MED CTR,DEPT BIOCHEM,DURHAM,NC 27710. RP SABINA, RL (reprint author), MED COLL WISCONSIN,DEPT CELLULAR BIOL & ANAT,8701 WATERTOWN PLANK RD,MILWAUKEE,WI 53226, USA. FU NIDDK NIH HHS [DK12413] NR 31 TC 38 Z9 39 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 0028-3878 J9 NEUROLOGY JI Neurology PD JAN PY 1992 VL 42 IS 1 BP 170 EP 179 PG 10 WC Clinical Neurology SC Neurosciences & Neurology GA HA895 UT WOS:A1992HA89500030 PM 1370861 ER PT J AU KONRADI, A ATWELL, W BADHWAR, GD CASH, BL HARDY, KA AF KONRADI, A ATWELL, W BADHWAR, GD CASH, BL HARDY, KA TI LOW EARTH ORBIT RADIATION-DOSE DISTRIBUTION IN A PHANTOM HEAD SO NUCLEAR TRACKS AND RADIATION MEASUREMENTS LA English DT Article AB In order to compare analytical methods with data obtained during exposure to space radiation, a phantom head instrumented with a large number of radiation detectors was flown on the Space Shuttle on three occasions: 8 August 1989 (STS-28), 28 February 1990 (STS-36), and 24 April 1990 (STS-31). The objective of this experiment was to obtain a measurement of the inhomogeneity in the dose distribution within a phantom head volume. The orbits of these missions were complementary-STS-28 and STS-36 had high inclination and low altitude, while STS-31 had a low inclination and high altitude. In the cases of STS-28 and STS-36, the main contribution to the radiation dose comes from galactic cosmic rays (GCR) with a minor to negligible part supplied by the inner belt through the South Atlantic Anomaly (SAA), and for STS-28 an even smaller one from a proton enhancement during a solar flare-associated proton event. For STS-31, the inner belt protons dominate and the GCR contribution is almost negligible. The internal dose distribution is consistent with the mass distribution of the orbiter and the self-shielding and physical location of the phantom head. C1 ROCKWELL INT CORP,HOUSTON,TX 77058. LOCKHEED,EMSC,HOUSTON,TX 77058. USAF,SCH AEROSP MED,BROOKS AFB,TX 78235. RP KONRADI, A (reprint author), NASA,LYNDON B JOHNSON SPACE CTR,HOUSTON,TX 77058, USA. NR 7 TC 21 Z9 22 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0735-245X J9 NUCL TRACKS RAD MEAS PD JAN PY 1992 VL 20 IS 1 BP 49 EP 54 PG 6 WC Nuclear Science & Technology SC Nuclear Science & Technology GA HD670 UT WOS:A1992HD67000010 ER PT J AU BOYARSKY, H AF BOYARSKY, H TI ARE CLINICAL STATE BOARD EXAMINATIONS ARCHAIC SO OPERATIVE DENTISTRY LA English DT Letter RP BOYARSKY, H (reprint author), USAF,DENT CORPS,3211 CABANA LANE,LANCASTER,CA 93536, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU UNIV WASHINGTON PI SEATTLE PA SCHOOL DENTISTRY SM-57, SEATTLE, WA 98195 SN 0361-7734 J9 OPER DENT JI Oper. Dent. PD JAN-FEB PY 1992 VL 17 IS 1 BP 34 EP 35 PG 2 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA HH388 UT WOS:A1992HH38800008 ER PT J AU CLARK, RH GERSTMANN, DR NULL, DM DELEMOS, RA AF CLARK, RH GERSTMANN, DR NULL, DM DELEMOS, RA TI PROSPECTIVE RANDOMIZED COMPARISON OF HIGH-FREQUENCY OSCILLATORY AND CONVENTIONAL VENTILATION IN RESPIRATORY-DISTRESS SYNDROME SO PEDIATRICS LA English DT Article DE HYALINE MEMBRANE DISEASE; BRONCHOPULMONARY DYSPLASIA; HIGH-FREQUENCY OSCILLATORY VENTILATION ID HYALINE-MEMBRANE DISEASE; PULMONARY INTERSTITIAL EMPHYSEMA; BRONCHOPULMONARY DYSPLASIA; AIRWAY PRESSURE; JET VENTILATION; LUNG INJURY; INFANTS; TRACHEAL; BABOONS AB A prospective randomized trial with a crossover design was conducted to compare the efficacy and safety of two distinct strategies of high-frequency oscillatory ventilation (HFOV) to conventional intermittent mandatory ventilation (CV) in the management of respiratory distress syndrome. Only premature neonates with a birth weight less than 1.751 kg were eligible for enrollment into the study. Of 83 patients studied, 26 patients were assigned to CV-only, 27 to HFOV for 72 hours followed by CV (HFOV/CV), and 30 to HFOV-only until extubation. There was no difference among the three groups with respect to the incidence of pulmonary airleak, intraventricular hemorrhage, or death. The highest incidence of chronic lung disease was in the CV-only group. Although both HFOV groups had a lower incidence of chronic lung disease assessed at 30 days and 36 weeks postconception age, the difference was statistically significant only between the CV-only and HFOV-only groups (65% vs 30% at 30 days; P = .008; 38% vs 10% at 36 weeks postconception age, P = .013). These results suggest that use of HFOV as the predominant mode of ventilation in the management of respiratory distress syndrome is as safe as CV and can contribute to a decreased incidence of chronic lung disease. Furthermore, a short (72-hour) period of HFOV support does not provide the same advantage as continuous HFOV. C1 WILFORD HALL USAF MED CTR, LACKLAND AFB, TX 78236 USA. SW FDN BIOMED RES, SAN ANTONIO, TX 78284 USA. RI Levitskiy, Anatoliy Pavlovich/B-2672-2016; Karvatska, Svitlana/D-5029-2016; Maksymiuk, Oleksandr/D-5068-2016; Podorozhna, Tetiana/D-5112-2016; Parvanova, Yonka/F-4890-2016; Antonets, Oleksandr/R-1081-2016; Yehorov, Bohdan/Q-1365-2015 OI Levitskiy, Anatoliy Pavlovich/0000-0002-1966-542X; Karvatska, Svitlana/0000-0001-9948-4866; Maksymiuk, Oleksandr/0000-0003-1778-6583; Podorozhna, Tetiana/0000-0003-0502-950X; Parvanova, Yonka/0000-0002-3627-501X; Antonets, Oleksandr/0000-0001-6741-9023; Yehorov, Bohdan/0000-0001-7526-0315 FU NHLBI NIH HHS [HL 36536] NR 31 TC 228 Z9 236 U1 0 U2 0 PU AMER ACAD PEDIATRICS PI ELK GROVE VILLAGE PA 141 NORTH-WEST POINT BLVD,, ELK GROVE VILLAGE, IL 60007-1098 USA SN 0031-4005 EI 1098-4275 J9 PEDIATRICS JI Pediatrics PD JAN PY 1992 VL 89 IS 1 BP 5 EP 12 PG 8 WC Pediatrics SC Pediatrics GA GY514 UT WOS:A1992GY51400002 PM 1728021 ER PT J AU WIREBAUGH, SR SHAPIRO, ML MCINTYRE, TH WHITNEY, EJ AF WIREBAUGH, SR SHAPIRO, ML MCINTYRE, TH WHITNEY, EJ TI A RETROSPECTIVE REVIEW OF THE USE OF LIPID-LOWERING AGENTS IN COMBINATION, SPECIFICALLY, GEMFIBROZIL AND LOVASTATIN SO PHARMACOTHERAPY LA English DT Article ID CORONARY HEART-DISEASE; ACUTE-RENAL-FAILURE; FAMILIAL HYPERCHOLESTEROLEMIA; RECEIVING LOVASTATIN; RHABDOMYOLYSIS; THERAPY; CHOLESTEROL; DIET; INTERVENTION; REGRESSION AB We conducted a retrospective review examining lipid profiles, creatine phosphokinase (CK) levels. and alanine aminotansferase levels (ALT) in patients receiving the combination of gemfibrozil and lovastatin. Serum lipid levels were significantly improved with therapy over those before therapy. Of the 70 patients receiving the combination, 5 experienced mild elevations in CK, 1 a mild elevation in ALT, and 1 mild elevations in both. No patient reported muscle weakness or muscle pain. The combination of these two medications appeared to be at least additive, highly effective, and well tolerated. The mean total cholesterol, triglyceride, and low-density lipoprotein cholesterol levels decreased from 278, 306, and 180 mg% to 200, 151, and 129 mg%, respectively, and the mean high-density lipoprotein cholesterol levels increased from 34 to 40 mg%. This retrospective data analysis suggests that the combination of gemfibrozil and lovastatin may be safe in patients with normal renal function when the dosage of lovastatin is limited and when CK and ALT levels are monitored carefully. C1 WILFORD HALL USAF MED CTR,DEPT INTERNAL MED,DIV CARDIOL,LACKLAND AFB,TX 78236. RP WIREBAUGH, SR (reprint author), WILFORD HALL USAF MED CTR,DEPT PHARM,LACKLAND AFB,TX 78236, USA. NR 35 TC 26 Z9 27 U1 0 U2 1 PU PHARMACOTHERAPY PUBLICATIONS INC PI BOSTON PA NEW ENGLAND MEDICAL CENTER BOX 806 171 HARRISON AVE, BOSTON, MA 02111 SN 0277-0008 J9 PHARMACOTHERAPY JI Pharmacotherapy PY 1992 VL 12 IS 6 BP 445 EP 450 PG 6 WC Pharmacology & Pharmacy SC Pharmacology & Pharmacy GA KB314 UT WOS:A1992KB31400004 PM 1492008 ER PT J AU COOPER, TM OBERMEIER, KA NATARAJAN, LV CRANE, RL AF COOPER, TM OBERMEIER, KA NATARAJAN, LV CRANE, RL TI KINETIC-STUDY OF THE HELIX TO COIL DARK REACTION OF POLY(SPIROPYRAN-L-GLUTAMATE) SO PHOTOCHEMISTRY AND PHOTOBIOLOGY LA English DT Article ID CIRCULAR-DICHROISM; PHOTORESPONSIVE POLYMERS; ALPHA-HELIX; ACID); CONFORMATION; PHOTOCONTROL; SPIROPYRAN; DYNAMICS; PROTEINS AB An investigation of kinetics of the helix to coil dark reaction of light adapted poly(spiropyran-L-glutamic acid) (PSLG) dissolved in hexafluoroisopropanol was performed. The reaction was associated with the spiropyran (SP) to merocyanine (MC) ring opening. The ring opening reaction monitored with UV/VIS spectroscopy showed first order kinetics. Chromophore and polypeptide backbone circular dichroism data fit to an expression consistent with a single intermediate series mechanism. By FTIR, we monitored the polypeptide alpha-helix amide I, the MC chromophore -C = C- stretch and the protonated unmodified carboxylate C = O stretch bands. During the first step of the series mechanism, changes in the hydrogen bonding of the unmodified carboxylate groups occurred, suggesting breakup of polypeptide aggregates. The second step of the proposed series mechanism was dominated by the helix to coil transition and the ring opening of SP to MC. The CD spectrum of MC in the dark adapted PSLG was red shifted and had a narrower bandwidth than the UV/VIS spectrum. The kinetic and spectroscopic data suggested that a fraction (population I) of the MC chromophores experienced optical activity induced by the chiral polypeptide environment, while the remainder of the MC chromophores (population II) were solvated and enantiomeric. C1 SAIC,DAYTON,OH 45431. RP COOPER, TM (reprint author), WRIGHT LAB,MLPJ,WRIGHT PATTERSON AFB,OH 45433, USA. NR 49 TC 26 Z9 26 U1 0 U2 7 PU AMER SOC PHOTOBIOLOGY PI AUGUSTA PA BIOTECH PARK, 1021 15TH ST, SUITE 9, AUGUSTA, GA 30901-3158 SN 0031-8655 J9 PHOTOCHEM PHOTOBIOL JI Photochem. Photobiol. PD JAN PY 1992 VL 55 IS 1 BP 1 EP 7 DI 10.1111/j.1751-1097.1992.tb04202.x PG 7 WC Biochemistry & Molecular Biology; Biophysics SC Biochemistry & Molecular Biology; Biophysics GA HB085 UT WOS:A1992HB08500001 PM 1376477 ER PT J AU FREI, MR JAUCHEM, JR AF FREI, MR JAUCHEM, JR TI THERMOREGULATORY RESPONSES OF RATS EXPOSED TO 9.3-GHZ MICROWAVES - A COMPARISON OF E-ORIENTATION AND H-ORIENTATION SO PHYSIOLOGICAL CHEMISTRY AND PHYSICS AND MEDICAL NMR LA English DT Article ID RADIOFREQUENCY RADIATION; PHYSIOLOGICAL-RESPONSES; FIELD ORIENTATION; ABSORPTION; FREQUENCY; IRRADIATION; KETAMINE AB The purpose of this study was to determine the effects of exposure orientation relative to electric and magnetic fields (E and H fields) on the thermal, cardiovascular, and respiratory changes in ketamine-anesthetized rats exposed to far-field, continuous-wave, 9.3-GHz radiofrequency radiation (FR). Irradiation (specific absorption rate = 12.5 W/kg in both orientations; power levels of 79 and 59 mW/cm2 in E and H orientations, respectively) was conducted to produce 1-degrees-C colonic temperature changes (38.5 to 39.5-degrees-C). During experimentation, arterial blood pressure and respiratory rate, colonic (T(c)) tympanic (T(t)) left and right subcutaneous (T(sl) & T(sr)) (sides toward and away from RFR source), and tail temperatures (T(ta)) were continuously recorded. The T(sr) change during E-orientation exposure was considerably less than the T(c) change; the T(t) and T(sr) (H-orientation) changes approximated the T(c) increase; and the T(sl) and T(ta) changes (both orientations) were considerably greater than the T(c) increase. The T(t) and T(sl) increases were virtually equal under the two exposure conditions; however, the T(sr) increase was significantly greater during H-orientation irradiation, and the T(ta) increase was significantly greater during E-orientation exposure. Heart rate and mean arterial pressure increased significantly during irradiation; however the cardiovascular responses were not affected by exposure orientation. The latter findings at 9.3 GHz contrast with the marked cardiovascular response differences between E- and H-orientation exposure noted during previous studies at 0.7 to 2.45 GHz. C1 USAF,ARMSTRONG LAB,DIV DIRECTED ENERGY,RADIOFREQUENCY RADIAT BRANCH,BROOKS AFB,TX 78235. RP FREI, MR (reprint author), TRINITY UNIV,DEPT BIOL,715 STADIUM DR,SAN ANTONIO,TX 78212, USA. NR 19 TC 4 Z9 4 U1 0 U2 0 PU PHYSIOL CHEM PHYSICS MED NMR PI MELVILLE PA PO BOX 1452, MELVILLE, NY 11747 SN 0748-6642 J9 PHYSIOL CHEM PHYS M JI Physiol. Chem. Phys. Med. NMR PY 1992 VL 24 IS 1 BP 1 EP 10 PG 10 WC Biochemical Research Methods; Biochemistry & Molecular Biology; Biophysics; Physiology; Radiology, Nuclear Medicine & Medical Imaging SC Biochemistry & Molecular Biology; Biophysics; Physiology; Radiology, Nuclear Medicine & Medical Imaging GA HT729 UT WOS:A1992HT72900001 PM 1594657 ER PT J AU FAWAZ, SA PALAZOTTO, AN WANG, CS AF FAWAZ, SA PALAZOTTO, AN WANG, CS TI AXIAL TENSILE AND COMPRESSIVE PROPERTIES OF HIGH-PERFORMANCE POLYMERIC FIBERS SO POLYMER LA English DT Article DE TENSILE MODULUS; COMPRESSIVE MODULUS; COMPRESSIVE STRENGTH; POLYMERIC FIBER; RIGID-ROD POLYMER; POLY(PARA-PHENYLENE BENZOBISOXAZOLE); STIFF-CHAIN POLYMER; POLY(PARA-PHENYLENE TEREPHTHALAMIDE); KEVLAR FIBER; DIRECT COMPRESSION ID FIBERS; MORPHOLOGY AB Axial tensile moduli, compressive moduli and compressive strengths of rigid-rod poly(p-phenylene benzobisoxazole) and stiff-chain poly(p-phenylene terephthalamide), Kevlar(TM), fibres were measured with a Tecam Micro-tensile Testing Machine. This machine was configured to allow for testing of single fibres in direct tension and compression at extremely small gauge lengths. The appropriate gauge lengths were estimated based on the discussion of Euler buckling and non-uniform stress distribution in anisotropic materials. The measured tensile and compressive moduli were analysed for corrections to machine compliance and possible gauge length error. The corrected compressive moduli were slightly lower than the corrected tensile moduli, probably due to fibre misalignment under compression and the fibrillar nature of the fibres. The fibre axial compressive strengths measured by direct compression were comparable to those measured from recoil and composite tests but lower than those from cantilever beam and elastica loop tests. C1 UNIV DAYTON,RES INST,DAYTON,OH 45469. USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433. NR 22 TC 22 Z9 22 U1 5 U2 9 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB SN 0032-3861 J9 POLYMER JI Polymer PY 1992 VL 33 IS 1 BP 100 EP 105 DI 10.1016/0032-3861(92)90566-F PG 6 WC Polymer Science SC Polymer Science GA HB160 UT WOS:A1992HB16000015 ER PT J AU HUH, W LEE, CYC BAI, SJ AF HUH, W LEE, CYC BAI, SJ TI PHASE-BEHAVIOR OF RIGID-ROD COIL SOLVENT TERNARY-SYSTEMS WITH ROD COIL INTERACTION SO POLYMER LA English DT Article DE TERNARY SYSTEMS; ROD COIL SOLVENT; POLY(PARA-PHENYLENE BENZOBISTHIAZOLE); NYLON; POLY(SODIUM 2-ACRYLAMIDO-2-METHYLPROPANESULFONATE); 2-ACRYLAMIDO-2-METHYLPROPANESULPHONIC ACID; POLY(PARA-PHENYLENETEREPHTHALAMIDO)PROPANE-SULFONATE); PHASE DIAGRAM ID RODLIKE AB This paper reports the phase diagrams of PBZT/nylon/MSA, PBZT/NaAMPS polymer/MSA, PBZT/HAMPS monomer/MSA and PBZT/PPTA-PS/MSA, with PBZT = poly(p-phenylene benzobisthiazole), MSA = methanesulphonic acid, NaAMPS = sodium 2-acrylamido-2-methylpropanesulphonate, HAMPS = 2-acrylamido-2-methylpropanesulphonic acid and PPTA-TS = poly(p-phenyleneterephthalamido) propanesulphonate). The ternary phase diagram of rigid-rod polymer PBZT and amorphous nylon in MSA solvent was found to follow Flory's prediction of a rod/coil/solvent ternary system very well. Flory's theory assumes no interaction between the rod and the coil, and the PBZT/nylon system fits this model nicely. When sulphonated polymers, such as NaAMPS polymer and PPTA-PS, were used instead of nylon in a ternary solution, it was found that the phase behaviour deviated from Flory's theory. This deviation could be due to the possible coil-rod intermolecular interaction in the ternary solution. Flory's formalism was used to analyse these data. It was found that for the PBZT/nylon/MSA system, the X3 value was consistent with the contour length of the coil molecules as predicted by Flory's theory. However, both PBZT/HAMPS monomer/MSA and PBZT/NaAMPS polymer/MSA systems showed an X3 value of unity. The ternary phase diagram of the PPTA-PS system showed an X3 value between 1 and 5. This suggests that the degree of intermolecular interaction between rod and coil plays an important role in determining the phase behaviour of a rod/coil/solvent ternary system. C1 USAF,MAT LAB,WRDC,MLBP,WRIGHT PATTERSON AFB,OH 45433. UNIV DAYTON,RES INST,DAYTON,OH 45469. NR 11 TC 8 Z9 10 U1 0 U2 3 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB SN 0032-3861 J9 POLYMER JI Polymer PY 1992 VL 33 IS 4 BP 789 EP 794 DI 10.1016/0032-3861(92)90338-W PG 6 WC Polymer Science SC Polymer Science GA HE585 UT WOS:A1992HE58500017 ER PT J AU HUNSAKER, ME PRICE, GE BAI, SJ AF HUNSAKER, ME PRICE, GE BAI, SJ TI PROCESSING, STRUCTURE AND MECHANICS OF FIBERS OF HETEROAROMATIC OXAZOLE POLYMERS SO POLYMER LA English DT Article DE POLY-PARA-PHENYLENE BENZOBISOXAZOLE; POLY-2,5-BENZOXAZOLE; LIQUID CRYSTALLINE POLYMERS; FIBERS; TENSILE PROPERTIES ID PARA-AROMATIC POLYMERS; RIGID-ROD POLYMERS; THERMAL-PROPERTIES; MAIN CHAIN; UNITS; 2,6-BENZOBISTHIAZOLE; 2,6-BENZOBISOXAZOLE; FIBERS AB Fibres of the rod-like molecule poly-p-phenylene benzobisoxazole (PBO) and the coil-like molecule poly-2,5-benzoxazole (ABPBO) were spun from polymerization dopes and then coagulated at various temperatures. Axial tension was applied in drying the coagulated wet filaments; heat treatment was applied to anneal the fibres. Wide-angle X-ray scattering on the fibres revealed that tension drying improved molecular alignment leading to increased tensile modulus. Small-angle X-ray scattering (SAXS) showed that the void content of the fibres was significantly reduced by low coagulation temperature, tension drying and thermal annealing. This reduction of voids also contributed to enhanced tensile properties. Thermal annealing also improved the crystallinity of the ABPBO fibres and seemed to induce a three-dimensional order, which was usually absent for fibres of the rod-like PBO polymer. Both annealed PBO and ABPBO fibres resulted in a unique off-axis radial four-point SAXS pattern. The tensile modulus for fibres of the rod-like polymer was higher than that of the coil-like polymer. However, as determined by the cantilever beam test, the critical compressive strain for fibres of the rod-like polymer was lower than that of the coil-like polymer. C1 UNIV DAYTON,RES INST,DAYTON,OH 45469. USAF,MAT LAB,POLYMER BRANCH,WRIGHT PATTERSON AFB,OH 45433. NR 19 TC 53 Z9 56 U1 4 U2 9 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB SN 0032-3861 J9 POLYMER JI Polymer PY 1992 VL 33 IS 10 BP 2128 EP 2135 DI 10.1016/0032-3861(92)90879-2 PG 8 WC Polymer Science SC Polymer Science GA HW559 UT WOS:A1992HW55900014 ER PT J AU SHOEMAKER, JR HORN, T HAALAND, PD PACHTER, R ADAMS, WW AF SHOEMAKER, JR HORN, T HAALAND, PD PACHTER, R ADAMS, WW TI ELECTRONIC-STRUCTURE AND PROPERTIES OF STRAINED POLYMERS .1. METHODS FOR POLYETHYLENE SO POLYMER LA English DT Article DE POLYETHYLENE; STRUCTURE; ELECTRONS ID FORCE-FIELD; N-ALKANES; PARAMETERS; MODULUS; CRYSTAL AB The modulus and strain-dependent frequency spectrum of polyethylene have been computed from a cluster of C6H12 units using the semi-empirical AM1 Hamiltonian and unrestricted Hartree-Fock wavefunctions. The computed modulus substantially exceeds experimental values, a result which derives from neglect of electron correlation ih the calculations. Good qualitative and quantitive agreement with reported strain-dependent frequencies is found, suggesting that the method describes cubic anharmonicity in the bonding while systematically overestimating components of the Hessian. C1 USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433. USAF,WRIGHT LAB,MAT DIRECTORATE,MLPJ,WRIGHT PATTERSON AFB,OH 45433. RI Adams, Wade/A-7305-2010 NR 36 TC 10 Z9 10 U1 0 U2 0 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB SN 0032-3861 J9 POLYMER JI Polymer PY 1992 VL 33 IS 16 BP 3351 EP 3356 DI 10.1016/0032-3861(92)91091-F PG 6 WC Polymer Science SC Polymer Science GA JJ081 UT WOS:A1992JJ08100003 ER PT J AU WIERSCHKE, SG SHOEMAKER, JR HAALAND, PD PACHTER, R ADAMS, WW AF WIERSCHKE, SG SHOEMAKER, JR HAALAND, PD PACHTER, R ADAMS, WW TI ELECTRONIC-STRUCTURE AND PROPERTIES OF STRAINED POLYMERS .2. RIGID-ROD PBI, PBO AND PBZT SO POLYMER LA English DT Article DE MECHANICAL PROPERTIES; MOLECULAR STRUCTURE; RIGID-ROD POLYMERS; POLY PARA-PHENYLENE BENZOBISIMIDAZOLE); POLY(PARA-PHENYLENE BENZOBISOXAZOLE); POLY(PARA-PHENYLENE BENZOBISTHIAZOLE); STRAIN; THEORETICAL MODULUS ID PARA-AROMATIC POLYMERS; MECHANICAL-PROPERTIES; THERMAL-PROPERTIES; MAIN CHAIN; POLYETHYLENE; UNITS; MODEL AB A theoretical study of single-chain moduli employing the molecular-orbital semi-empirical AM1 (Austin model 1) approach is presented for the poly(p-phenylene benzobisimidazole) (PBI), poly(p-phenylene benzobisoxazole) (PBO) and poly(p-phenylene benzobisthiazole) (PBZT) rigid-rod polymers. This computational study is important for comparisons of mechanical properties for the series of related polymers. An analysis of molecular deformation on tension and compression of these rigid-rod polymers offers an insight into tensile and compressive processes at the molecular level, allowing their relative ordering by theoretical tensile and/or compressive strength and moduli. Furthermore, an examination of the electronic structures of these molecular systems containing various hetero atoms provides insight into the charge distribution and bond order changes on the application of strain. This approach will be useful for the relative prediction of the properties of polymers that have not yet been synthesized. C1 USAF,WRIGHT LAB,MAT DIRECTORATE,MLPJ,WRIGHT PATTERSON AFB,OH 45433. USAF ACAD,DEPT CHEM,COLORADO SPRINGS,CO 80840. USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433. RI Adams, Wade/A-7305-2010 NR 43 TC 31 Z9 31 U1 0 U2 5 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB SN 0032-3861 J9 POLYMER JI Polymer PY 1992 VL 33 IS 16 BP 3357 EP 3368 DI 10.1016/0032-3861(92)91092-G PG 12 WC Polymer Science SC Polymer Science GA JJ081 UT WOS:A1992JJ08100004 ER PT B AU PREVIC, FH SAUCEDO, JC AF PREVIC, FH SAUCEDO, JC BE Woollacott, M Horak, F TI TURNING BEHAVIOR IN HUMANS AND ITS RELATIONSHIP TO MOTORIC DOMINANCE AND POSTURAL ASYMMETRY SO POSTURE AND GAIT, CONTROL MECHANISMS 1992, VOL 1 AND 2 LA English DT Proceedings Paper CT 11th International Symposium of the Society for Postural and Gait Research - Posture and Gait: Control Mechanisms, 1992 CY MAY 24-27, 1992 CL PORTLAND, OR SP SOC POSTURAL & GAIT RES, UNIV OREGON, GOOD SAMARITAN HOSP, OREGON C1 ARMSTRONG LAB,DIV CREW TECHNOL,BROOKS AFB,TX 78235. NR 0 TC 0 Z9 0 U1 0 U2 0 PU UNIV OREGONBOOKS PI EUGENE PA UNIV OREGON, UNIV OREGON PUBNS, 101 CHAPMAN HALL, EUGENE, OR 97403-1282 BN 0-87114-090-X PY 1992 BP A230 EP A233 PG 4 WC Neurosciences SC Neurosciences & Neurology GA BA19J UT WOS:A1992BA19J00059 ER PT S AU COLON, JE ELSAESSER, DW YEO, YK HENGEHOLD, RL POMRENKE, GS AF COLON, JE ELSAESSER, DW YEO, YK HENGEHOLD, RL POMRENKE, GS BE Davies, G Deleo, GG Stavola, M TI EXCITATION MECHANISM OF THE ERBIUM 4F EMISSIONS IN GAAS SO PROCEEDINGS OF THE 16TH INTERNATIONAL CONFERENCE ON DEFECTS IN SEMICONDUCTORS, PTS 1-3 SE Materials Science Forum LA English DT Proceedings Paper CT 16TH INTERNATIONAL CONF ON DEFECTS IN SEMICONDUCTORS ( ICDS-16 ) CY JUL 22-26, 1991 CL LEHIGH UNIV, BETHLEHEM, PA SP USAF, OFF SCI RES, BANDGAP TECHNOL, DEF ADV RES PROJECTS AGCY, EASTMAN KODAK, FORD MOTOR, FUJITSU LABS, IBM, KAWASAKI STEEL, LEHIGH UNIV, MOBIL SOLAR ENERGY HO LEHIGH UNIV C1 USAF, INST TECHNOL, WRIGHT PATTERSON AFB, OH 45433 USA. NR 0 TC 7 Z9 7 U1 0 U2 0 PU TRANS TECH PUBLICATIONS LTD PI STAFA-ZURICH PA LAUBLSRUTISTR 24, CH-8717 STAFA-ZURICH, SWITZERLAND SN 0255-5476 BN 0-87849-628-9 J9 MATER SCI FORUM PY 1992 VL 83 BP 671 EP 676 PG 6 WC Materials Science, Multidisciplinary; Physics, Condensed Matter SC Materials Science; Physics GA BW69F UT WOS:A1992BW69F00105 ER PT J AU MAILLOUX, RJ AF MAILLOUX, RJ TI ANTENNA-ARRAY ARCHITECTURE SO PROCEEDINGS OF THE IEEE LA English DT Article ID BAND AB This paper presents an abbreviated view of the topics included in modern array architecture. Too broad for any one presentation, the subject of architecture includes all the electromagnetic, thermal, and mechanical aspects that need to be addressed by the array design team. This paper emphasizes the interaction between the selection of an array aperture organization, corporate feeds, devices and elements, and includes as example a discussion of EHF monolithic array architecture. C1 TUFTS UNIV,MEDFORD,MA 02155. RP MAILLOUX, RJ (reprint author), USAF,ROME LAB,ERA,DIV ANTENNAS & COMPONENTS,BEDFORD,MA 01731, USA. NR 19 TC 22 Z9 22 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9219 J9 P IEEE JI Proc. IEEE PD JAN PY 1992 VL 80 IS 1 BP 163 EP 172 DI 10.1109/5.119575 PG 10 WC Engineering, Electrical & Electronic SC Engineering GA HE999 UT WOS:A1992HE99900013 ER PT B AU CHIEN, LS PALAZOTTO, AN AF CHIEN, LS PALAZOTTO, AN BE Sun, CT Loo, TT TI VISCOELASTIC AND VISCOPLASTIC PROPERTIES OF SKIN-LIKE STRUCTURES SO PROCEEDINGS OF THE SECOND INTERNATIONAL SYMPOSIUM ON COMPOSITE MATERIALS AND STRUCTURES LA English DT Proceedings Paper CT 2nd International Symposium on Composite Materials and Structures CY AUG 03-07, 1992 CL BEIJING, PEOPLES R CHINA SP CHINESE SOC THEORET & APPL MECH, AMER SOC COMPOSITES, BRIT COMPOSITES SOC, CANADIAN ASSOC COMPOSITE STRUCT & MAT, JAPAN SOC COMPOSITE MAT, CHINESE SOC AERONAUT & ASTRONAUT, CHINESE COMPOSITE SOC, CHINA ASSOC SCI & TECHNOL, NATL NAT SCI FDN CHINA C1 USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU PEKING UNIV PRESS PI BEIJING PA HAIDIANQU, BEIJING, PEOPLES R CHINA BN 7-301-01862-2 PY 1992 BP 112 EP 119 PG 8 WC Mechanics; Materials Science, Composites SC Mechanics; Materials Science GA BC88N UT WOS:A1992BC88N00018 ER PT J AU SESTERHENN, IA MOSTOFI, FK MATTREY, RR SANDS, JP DAVIS, CJ MCCARTHY, WF AF SESTERHENN, IA MOSTOFI, FK MATTREY, RR SANDS, JP DAVIS, CJ MCCARTHY, WF TI PRELIMINARY-RESULTS OF 3-DIMENSIONAL RECONSTRUCTION OF PREVIOUSLY IMAGED PROSTATES SO PROSTATE LA English DT Article; Proceedings Paper CT 1ST INTERNATIONAL CONGRESS OF THE DUTCH UROLOGICAL ASSOC : PROSTATE CANCER - IMAGING, MANAGEMENT, AND SCREENING CY OCT 09-13, 1991 CL ROTTERDAM, NETHERLANDS SP DUTCH UROLOG ASSOC, ICI PHARM ID CANCER AB In patients with biopsy proven prostate cancer, preoperative transrectal magnetic resonance imaging (MRI) and ultrasound were performed, followed by total prostatectomy. Generally, the findings with MRI correlated well with the histopathologic findings, including infiltration of and extension through the capsule into periprostatic tissue and the seminal vesicles. False negative results with MRI included centrally located tumors and small tumors. False positive results with MRI included lobular atrophy, cystic hyperplasia, cystic atrophy, florid glandular hyperplasia and scars with chronic inflammation. C1 USAF,INST PATHOL,DEPT BIOSTAT,WASHINGTON,DC 20306. USAF,INST PATHOL,DEPT EPIDEMIOL,WASHINGTON,DC 20306. UNIV SO CALIF,DEPT RADIOL,SAN DIEGO,CA. USN HOSP,DEPT UROL,SAN DIEGO,CA 92134. RP SESTERHENN, IA (reprint author), USAF,INST PATHOL,DEPT GENITOURINARY PATHOL,WASHINGTON,DC 20306, USA. NR 15 TC 2 Z9 2 U1 0 U2 0 PU WILEY-LISS PI NEW YORK PA DIV JOHN WILEY & SONS INC 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0270-4137 J9 PROSTATE JI Prostate PY 1992 SU 4 BP 33 EP 41 PG 9 WC Endocrinology & Metabolism; Urology & Nephrology SC Endocrinology & Metabolism; Urology & Nephrology GA HU822 UT WOS:A1992HU82200005 ER PT J AU MOSTOFI, FK SESTERHENN, IA DAVIS, CJ AF MOSTOFI, FK SESTERHENN, IA DAVIS, CJ TI PROSTATIC INTRAEPITHELIAL NEOPLASIA (PIN) - MORPHOLOGICAL CLINICAL-SIGNIFICANCE SO PROSTATE LA English DT Article; Proceedings Paper CT 1ST INTERNATIONAL CONGRESS OF THE DUTCH UROLOGICAL ASSOC : PROSTATE CANCER - IMAGING, MANAGEMENT, AND SCREENING CY OCT 09-13, 1991 CL ROTTERDAM, NETHERLANDS SP DUTCH UROLOG ASSOC, ICI PHARM DE AGNORS; ATYPIA; PROSTATIC PREMALIGNANT CHANGES ID ATYPICAL HYPERPLASIA; TOTAL PROSTATECTOMIES; SEVERE DYSPLASIA; CARCINOMA; ADENOCARCINOMA; PATHOLOGY; LESION AB Premalignant lesions of the prostate fall into two categories. The first category includes formation of new, usually small, glands which are either abnormally distributed or show minimal nuclear atypia or both. Morphologically, this lesion presents the differential diagnostic alternatives of micro-acinar hyperplasia on the one hand and a low grade micro-acinar cancer on the other. If the presence or absence of nuclear anaplasia or acinar dispersion (i.e., stromal invasion) raises any degree of doubt, atypical glands are diagnosed. This is the category that is considered by some to be the precursor of well differentiated prostate cancer. The second category is prostatic intraepithelial neoplasia (PIN). We have defined PIN as an intra-acinar or ductal proliferation of secretory cells with unequivocal nuclear anaplasia, which corresponds to nuclear grade 2 and 3 invasive prostate cancer. We consider PIN as essentially carcinoma in situ. The lesion designated by some as PIN 1 is classified by us as atypical hyperplasia. RP MOSTOFI, FK (reprint author), USAF,INST PATHOL,DEPT GENITOURINARY PATHOL,WASHINGTON,DC 20306, USA. NR 36 TC 3 Z9 3 U1 0 U2 1 PU WILEY-LISS PI NEW YORK PA DIV JOHN WILEY & SONS INC 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0270-4137 J9 PROSTATE JI Prostate PY 1992 SU 4 BP 71 EP 77 PG 7 WC Endocrinology & Metabolism; Urology & Nephrology SC Endocrinology & Metabolism; Urology & Nephrology GA HU822 UT WOS:A1992HU82200010 ER PT J AU TUTTLE, GR AF TUTTLE, GR TI MANAGING CULTURAL-CHANGE SO QUALITY PROGRESS LA English DT Letter RP TUTTLE, GR (reprint author), USAF,CTR QUAL EDUC,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC QUALITY CONTROL-ASQC PI MILWAUKEE PA ASQC MEMBERSHIP MANAGER 611 E. WISCONSIN AVENUE, MILWAUKEE, WI 53202 SN 0033-524X J9 QUAL PROG JI Qual. Prog. PD JAN PY 1992 VL 25 IS 1 BP 6 EP & PG 0 WC Engineering, Multidisciplinary; Engineering, Industrial; Management; Operations Research & Management Science SC Engineering; Business & Economics; Operations Research & Management Science GA GY483 UT WOS:A1992GY48300004 ER PT J AU FARR, CM FISCHER, WA AF FARR, CM FISCHER, WA TI MANAGING INTERNATIONAL HIGH TECHNOLOGY COOPERATIVE PROJECTS SO R & D MANAGEMENT LA English DT Article AB The recent attention given to Strategic Alliances and Technological Partnering, in a variety of commercial and governmental contexts, has grown much faster than our detailed understanding of how such arrangements work. For some time, however, military agencies in the NATO countries have been involved in a number of high-technology cooperative projects, resulting in the co-development of new weapon systems. This paper examines fourteen such case studies (six that were relatively successful and eight that were less successful) and attempts to draw lessons from the experiences of these projects. Among the lessons which are strongly represented in this set of projects are: the importance of insulating the projects from the vagaries of international politics, the need to provide strong project leadership and a forum for partners to work out their differences, and the bestowal of significant authority in the hands of the project manager. C1 UNIV N CAROLINA,CHAPEL HILL,NC 27514. RP FARR, CM (reprint author), USAF,INST TECHNOL,WASHINGTON,DC 20330, USA. NR 7 TC 32 Z9 33 U1 0 U2 3 PU BLACKWELL PUBL LTD PI OXFORD PA 108 COWLEY RD, OXFORD, OXON, ENGLAND OX4 1JF SN 0033-6807 J9 R&D MANAGE JI R D Manage. PD JAN PY 1992 VL 22 IS 1 BP 55 EP 67 DI 10.1111/j.1467-9310.1992.tb00788.x PG 13 WC Business; Management SC Business & Economics GA HD683 UT WOS:A1992HD68300004 ER PT J AU DIEHL, AE AF DIEHL, AE GP FLIGHT SAFETY FDN TI THE EFFECTIVENESS OF TRAINING PROGRAMS FOR CIVIL AND MILITARY COCKPIT MANAGEMENT SO SAFETY & TECHNOLOGY - HARMONY OR DISCORD? SE INTERNATIONAL AIR SAFETY SEMINAR PROCEEDINGS LA English DT Proceedings Paper CT Flight-Safety-Foundation 45th Annual International Air Safety Seminar/International-Federation-of-Airworthiness 22nd International Conference CY NOV 01-05, 1992 CL LONG BEACH, CA SP FLIGHT SAFETY FDN, INT FEDERAT AIRWORTHINESS C1 USAF,SAFETY AGCY,WASHINGTON,DC 20330. NR 0 TC 0 Z9 0 U1 0 U2 0 PU FLIGHT SAFETY FOUNDATION PI ALEXANDRIA PA 601 MADISON STREET STE 300, ALEXANDRIA, VA 22314 SN 0270-5176 J9 INT AIR SAF SEM P PY 1992 BP 370 EP 383 PG 14 WC Engineering, Aerospace; Engineering, Industrial; Ergonomics; Instruments & Instrumentation; Psychology SC Engineering; Instruments & Instrumentation; Psychology GA BC53F UT WOS:A1992BC53F00036 ER PT S AU LUGINBUHL, DR CARDOW, JE AF LUGINBUHL, DR CARDOW, JE BE Sledge, C TI TEACHING SOFTWARE-VERIFICATION AND VALIDATION TO SOFTWARE PRACTITIONERS SO SOFTWARE ENGINEERING EDUCATION SE LECTURE NOTES IN COMPUTER SCIENCE LA English DT Proceedings Paper CT 6TH CONF ON SOFTWARE ENGINEERING EDUCATION CY OCT 05-07, 1992 CL SAN DIEGO, CA SP SOFTWARE ENGN INST, PROD PROGRAM RP LUGINBUHL, DR (reprint author), USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER-VERLAG BERLIN PI BERLIN PA BERLIN SN 0302-9743 BN 3-540-55963-9 J9 LECT NOTES COMPUT SC PY 1992 VL 640 BP 167 EP 179 PG 13 WC Education, Scientific Disciplines SC Education & Educational Research GA BY27J UT WOS:A1992BY27J00011 ER PT S AU BAILOR, PD HARTRUM, TC AF BAILOR, PD HARTRUM, TC BE Sledge, C TI EDUCATING MODEL-BASED SOFTWARE ENGINEERS SO SOFTWARE ENGINEERING EDUCATION SE LECTURE NOTES IN COMPUTER SCIENCE LA English DT Proceedings Paper CT 6TH CONF ON SOFTWARE ENGINEERING EDUCATION CY OCT 05-07, 1992 CL SAN DIEGO, CA SP SOFTWARE ENGN INST, PROD PROGRAM RP BAILOR, PD (reprint author), USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER-VERLAG BERLIN PI BERLIN PA BERLIN SN 0302-9743 BN 3-540-55963-9 J9 LECT NOTES COMPUT SC PY 1992 VL 640 BP 290 EP 297 PG 8 WC Education, Scientific Disciplines SC Education & Educational Research GA BY27J UT WOS:A1992BY27J00018 ER PT J AU MANASREH, MO GUMBS, G ZHANG, C STUTZ, CE EVANS, KR BOZADA, CA LO, I MITCHEL, WC AF MANASREH, MO GUMBS, G ZHANG, C STUTZ, CE EVANS, KR BOZADA, CA LO, I MITCHEL, WC TI EFFECTIVE MASS OF THE 2-DIMENSIONAL ELECTRON-GAS IN AN AL0.6GA0.4SB/INAS SINGLE QUANTUM-WELL SO SUPERLATTICES AND MICROSTRUCTURES LA English DT Article ID CYCLOTRON-RESONANCE; EXCHANGE ENHANCEMENT; 2 DIMENSIONS; HETEROSTRUCTURES; HETEROJUNCTIONS; EXCITATIONS; FIELD; GAAS C1 WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. CUNY HUNTER COLL,DEPT PHYS,NEW YORK,NY 10021. TRIUMF,VANCOUVER V6T 2A3,BC,CANADA. RP MANASREH, MO (reprint author), WRIGHT LAB,SOLID STATE ELECTR DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 25 TC 2 Z9 2 U1 0 U2 0 PU ACADEMIC PRESS LTD PI LONDON PA 24-28 OVAL RD, LONDON, ENGLAND NW1 7DX SN 0749-6036 J9 SUPERLATTICE MICROST JI Superlattices Microstruct. PY 1992 VL 11 IS 4 BP 423 EP 427 DI 10.1016/0749-6036(92)90200-O PG 5 WC Physics, Condensed Matter SC Physics GA JF717 UT WOS:A1992JF71700010 ER PT J AU DAREING, DW DAYTON, RD AF DAREING, DW DAYTON, RD TI NON-NEWTONIAN BEHAVIOR OF POWDER LUBRICANTS MIXED WITH ETHYLENE-GLYCOL SO TRIBOLOGY TRANSACTIONS LA English DT Article; Proceedings Paper CT 46TH ANNUAL MEETING OF THE SOC OF TRIBOLOGISTS AND LUBRICATION ENGINEERS CY APR 29-MAY 02, 1991 CL MONTREAL, CANADA SP SOC TRIBOLOGISTS & LUBRICAT ENGINEERS DE POWDER LUBRICANTS; RHEOLOGY; NON-NEWTONIAN AB The rheological properties of two powder lubricants mixed separately with ethylene glycol were determined experimentally. The two powder lubricants were graphite and molybdenum disulfide. Bingham plastic, power law and hyperbolic rheological models were compared with the experimentally determined shear stress-shear rate rheological data. All three models compare favorably with experimental data at high shear rates. The power law and hyperbolic rheological models are realistic candidates at low shear rates. The three rheological models were incorporated into fluid flow equations and solved for the case of pressure induced flow between parallel surfaces. Predicted flow rates of these non Newtonian slurries were checked against laboratory data which was obtained through a test rig designed and built during the study. C1 AERO PROP & POWER LAB,WRIGHT PATTERSON AFB,OH. RP DAREING, DW (reprint author), UNIV FLORIDA,GAINESVILLE,FL 32611, USA. NR 5 TC 8 Z9 8 U1 0 U2 2 PU SOC TRIBOLOGISTS & LUBRICATION ENGINEERS PI PARK RIDGE PA 838 BUSSE HIGHWAY, PARK RIDGE, IL 60068 SN 0569-8197 J9 TRIBOL T JI Tribol. Trans. PD JAN PY 1992 VL 35 IS 1 BP 114 EP 120 DI 10.1080/10402009208982097 PG 7 WC Engineering, Mechanical SC Engineering GA GY829 UT WOS:A1992GY82900016 ER PT J AU DAMARLA, TR KARPUR, P BHAGAT, PK AF DAMARLA, TR KARPUR, P BHAGAT, PK TI A SELF-LEARNING NEURAL NET FOR ULTRASONIC SIGNAL ANALYSIS SO ULTRASONICS LA English DT Article DE SIGNAL ANALYSIS; ARTIFICIAL NEURAL NETS; LEARNING ALGORITHMS ID NETWORKS AB This paper deals with ultrasonic signal analysis using artificial neural nets. In particular, it investigates the classification of ultrasonic inspection data using a backpropagation (BP) neural network. The traditional BP learning algorithm requires a set of signals that have been classified a priori for training the net. To eliminate the uncertainties involved in selecting the training set, a self-learning algorithm is developed. A BP net is trained using the self-learning algorithm and it is used to classify ultrasonic inspection data. The classification is performed in both the time and the frequency domains. The classification results are compared with the results obtained by conventional C-scan methods, and it is found that 95% of all the signals with flaws are classified correctly by the unsupervised BP net. The self-learning algorithm developed for classification of ultrasonic data is also detailed in this paper. It utilizes the correlation information computed by the first hidden layer of the BP net for the generation of the initial training set consisting of one signal per each class. Additional signals in each class are selected by the net using the nearest neighbour approach. An estimate of the number of different classes present in the data is made using the damage profile of the sample being investigated by Kohonen's learning vector quantization (LVQ) algorithm. C1 UNIV DAYTON,RES INST,DAYTON,OH 45469. WRIGHT LAB,MLLP,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP DAMARLA, TR (reprint author), UNIV KENTUCKY,DEPT ELECT ENGN,LEXINGTON,KY 40506, USA. NR 10 TC 11 Z9 11 U1 0 U2 0 PU BUTTERWORTH-HEINEMANN LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB SN 0041-624X J9 ULTRASONICS JI Ultrasonics PY 1992 VL 30 IS 5 BP 317 EP 324 DI 10.1016/0041-624X(92)90006-8 PG 8 WC Acoustics; Radiology, Nuclear Medicine & Medical Imaging SC Acoustics; Radiology, Nuclear Medicine & Medical Imaging GA JK973 UT WOS:A1992JK97300006 ER PT J AU PATRICK, EL ANDREWS, ML GARSCADDEN, A AF PATRICK, EL ANDREWS, ML GARSCADDEN, A TI ELECTRON-DRIFT VELOCITIES IN XENON AND XENON-NITROGEN GAS-MIXTURES SO APPLIED PHYSICS LETTERS LA English DT Article ID KRYPTON AB The drift velocity of an electron swarm in pure xenon gas (99.995% pure) and xenon gas mixtures, containing 0.1%, 1%, and 10% nitrogen additive, was measured in a pulsed-Townsend drift tube in order to observe the effects of the additives on electron mobility, and to demonstrate negative differential conductivity. The digitized signal was analyzed by a microcomputer to produce swarm drift time measurements. The amount of nitrogen necessary to perturb the electron drift velocity in pure xenon is implied from these measurements. C1 WRIGHT STATE UNIV,DEPT PHYS,DAYTON,OH 45435. WRIGHT LAB,ADV PLASMA RES GRP,WRIGHT PATTERSON AFB,OH 45433. RP PATRICK, EL (reprint author), NASA,GODDARD SPACE FLIGHT CTR,HUGHES STX,CODE 915,GREENBELT,MD 20771, USA. NR 9 TC 6 Z9 6 U1 1 U2 3 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD DEC 16 PY 1991 VL 59 IS 25 BP 3239 EP 3240 DI 10.1063/1.105744 PG 2 WC Physics, Applied SC Physics GA GV079 UT WOS:A1991GV07900012 ER PT J AU ACUFF, GR ALBANESE, RA BATT, CA BERNDT, DL BYERS, FM DALE, BE DENTON, JH FUCHS, RL GASTEL, B HEIDELBAUGH, ND IVIE, GW KENDALL, K KOPCHICK, JJ LEWIS, DH MCCASLAND, FV MENNING, EL PHILLIPS, TD POTTER, ME RODRICKS, JV SCHOLL, DR SHADDUCK, JA TARNOWSKI, SJ TILLOTSON, JE VANDRESSER, WR WOMACK, JE AF ACUFF, GR ALBANESE, RA BATT, CA BERNDT, DL BYERS, FM DALE, BE DENTON, JH FUCHS, RL GASTEL, B HEIDELBAUGH, ND IVIE, GW KENDALL, K KOPCHICK, JJ LEWIS, DH MCCASLAND, FV MENNING, EL PHILLIPS, TD POTTER, ME RODRICKS, JV SCHOLL, DR SHADDUCK, JA TARNOWSKI, SJ TILLOTSON, JE VANDRESSER, WR WOMACK, JE TI IMPLICATIONS OF BIOTECHNOLOGY, RISK ASSESSMENT, AND COMMUNICATIONS FOR THE SAFETY OF FOODS OF ANIMAL ORIGIN SO JOURNAL OF THE AMERICAN VETERINARY MEDICAL ASSOCIATION LA English DT Article C1 TEXAS A&M UNIV SYST,COLL VET MED,COLLEGE STN,TX 77843. TEXAS A&M UNIV SYST,COLL AGR & LIFE SCI,COLLEGE STN,TX 77843. TEXAS A&M UNIV SYST,COLL ENGN,COLLEGE STN,TX 77843. TEXAS A&M UNIV SYST,COLL LIBERAL ARTS & MED,COLLEGE STN,TX 77843. USAF,ARMSTRONG LAB,BROOKS AFB,TX 78235. CORNELL UNIV,COLL AGR,ITHACA,NY 14853. USDA,FSIS,DIV TRAINING & DEV,DENTON,TX 76202. MONSANTO CO,ST LOUIS,MO 63198. USDA ARS,FOOD ANIM PROTECT RES LAB,COLLEGE STN,TX 77845. HILL & KNOWLTON INC,HOUSTON,TX 77056. OHIO UNIV,EDISON ANIM BIOTECHNOL CTR,ATHENS,OH 45701. TEXAS DEPT HLTH,AUSTIN,TX 78756. NATL ASSOC FED VET,WASHINGTON,DC 20005. US PHS,CTR DIS CONTROL,ATLANTA,GA 30333. ENVIRON CORP,ARLINGTON,VA 22203. DIAGNOST HYBRIDS INC,ATHENS,OH 45701. CALIF BIOTECHNOL INC,MT VIEW,CA 94043. TUFTS UNIV,INST FOOD POLICY,MEDFORD,MA 02155. AVMA GOVT RELAT DIV,WASHINGTON,DC 20005. RP HEIDELBAUGH, ND (reprint author), TEXAS A&M UNIV SYST,COLL VET MED,COLLEGE STN,TX 77843, USA. RI Acuff, Gary/C-3034-2008 NR 21 TC 5 Z9 5 U1 0 U2 0 PU AMER VETERINARY MEDICAL ASSOC PI SCHAUMBURG PA 1931 N MEACHAM RD SUITE 100, SCHAUMBURG, IL 60173-4360 SN 0003-1488 J9 J AM VET MED ASSOC JI J. Am. Vet. Med. Assoc. PD DEC 15 PY 1991 VL 199 IS 12 BP 1714 EP 1721 PG 8 WC Veterinary Sciences SC Veterinary Sciences GA GV359 UT WOS:A1991GV35900013 PM 1687575 ER PT J AU TU, Y THOMPSON, JF AF TU, Y THOMPSON, JF TI 3-DIMENSIONAL SOLUTION-ADAPTIVE GRID GENERATION ON COMPOSITE CONFIGURATIONS SO AIAA JOURNAL LA English DT Article; Proceedings Paper CT 28TH MEETING ON AEROSPACE SCIENCES CY JAN 08-11, 1990 CL RENO, NV SP AMER INST AERONAUT & ASTRONAUT AB THE EAGLE 3D composite-block grid code has been coupled with an implicit Euler flow solver to generate solution-adaptive grids for composite-block configurations with an improved control function formulation. The code has been tested with two complex composite configurations, one of which, an eight-block finned body of revolution at transonic speeds, is described here. The solution-adaptive grids obtained are shown to possess continuous slopes across block boundaries and an improved quality of aerodynamics simulation about complex geometries. C1 MISSISSIPPI STATE UNIV,DEPT AEROSP,MISSISSIPPI STATE,MS 39762. RP TU, Y (reprint author), USAF,ARMAMENT LAB,DIV AEROMECH,AERODYNAM BRANCH,COMP FLUID DYNAM SECT,EGLIN AFB,FL 32542, USA. NR 3 TC 8 Z9 8 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0001-1452 J9 AIAA J JI AIAA J. PD DEC PY 1991 VL 29 IS 12 BP 2025 EP 2026 DI 10.2514/3.10835 PG 2 WC Engineering, Aerospace SC Engineering GA GX692 UT WOS:A1991GX69200001 ER PT J AU PELSTRING, RJ ESSELL, JH KURTIN, PJ COHEN, AR BANKS, PM AF PELSTRING, RJ ESSELL, JH KURTIN, PJ COHEN, AR BANKS, PM TI DIVERSITY OF ORGAN SITE INVOLVEMENT AMONG MALIGNANT-LYMPHOMAS OF MUCOSA-ASSOCIATED TISSUES SO AMERICAN JOURNAL OF CLINICAL PATHOLOGY LA English DT Article ID B-CELL LYMPHOMA; NON-HODGKINS LYMPHOMA; MONOCYTOID CELLS; LYMPHOCYTES-B; MARGINAL ZONE; BREAST; PROSTATE; INFILTRATION; SKIN; GUT AB Fifteen cases of low-grade B-cell lymphoma involving unusual extranodal sites have been studied in comparison to cases reported or observed arising in typical mucosa-associated lymphoid tissues. In every case, histopathologic features conformed to those characteristic for lymphomas of mucosa-associated lymphoid tissues, including the production of lymphoepithelial complexes. Immunoglobulin light chain restriction was demonstrated by immunocytochemistry in 14 cases. Sites of involvement included the breast (6), skin (5), kidney (1), prostate (1), gallbladder (1), and uterine cervix (1). In three cases there was simultaneous or previous lymphoma of mucosa-associated lymphoid tissues identified in a more common mucosal site. It is concluded that the unifying concept of lymphomas of mucosa-associated lymphoid tissues applies to extranodal organs less commonly associated with mucosa-associated lymphoid tissues, as well as to those mucosal organ sites described in earlier series. C1 UNIV TEXAS,HLTH SCI CTR,DEPT PATHOL,7703 FLOYD CURL DR,SAN ANTONIO,TX 78284. WILFORD HALL USAF MED CTR,DEPT HEMATOL ONCOL,LACKLAND AFB,TX 78236. MAYO CLIN & MAYO FDN,DEPT LAB MED & PATHOL,ROCHESTER,MN 55905. PRESBYTERIAN HOSP,DEPT LAB MED & PATHOL,CHARLOTTE,NC. NR 50 TC 124 Z9 125 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 0002-9173 J9 AM J CLIN PATHOL JI Am. J. Clin. Pathol. PD DEC PY 1991 VL 96 IS 6 BP 738 EP 745 PG 8 WC Pathology SC Pathology GA GT929 UT WOS:A1991GT92900011 PM 1746490 ER PT J AU MUSKAT, PC JOHNSON, RA BOWERS, GJ AF MUSKAT, PC JOHNSON, RA BOWERS, GJ TI STAGING LAPAROTOMY IN HODGKINS LYMPHOMA - 1979 TO 1988 SO AMERICAN JOURNAL OF SURGERY LA English DT Article; Proceedings Paper CT 43RD ANNUAL MEETING OF THE SOUTHWESTERN SURGICAL CONGRESS CY APR 21-24, 1991 CL LAS VEGAS, NV SP SW SURG CONGRESS ID COMPUTED-TOMOGRAPHY; DISEASE; EXPERIENCE; COMPLICATIONS; CHEMOTHERAPY AB A retrospective review of patients with Hodgkin's lymphoma undergoing staging laparotomy was done. Ninety-four patients were identified for analysis. Preoperative lymphangiography was performed in 86 patients, and computed tomography of the abdomen was performed in 53. Both proved to have an accuracy rate of 76%. Mortality and 30-day morbidity rates were 0% and 17%, respectively, when both major (8%) and minor (10%) complications were considered. Late complications (greater than 30 days) were noted in 5%. The results of the laparotomy required a change in staging in 28% of patients, with alterations in subsequent clinical management occurring in 18%. In selected patients, staging laparotomy is safe and remains a reliable means of determining the intra-abdominal extent of Hodgkin's lymphoma. C1 WILFORD HALL USAF MED CTR,DEPT SURG,SURG ONCOL SECT,LACKLAND AFB,TX 78236. WILFORD HALL USAF MED CTR,DEPT HEMATOL MED ONCOL,LACKLAND AFB,TX 78236. NR 27 TC 5 Z9 5 U1 0 U2 0 PU CAHNERS PUBL CO PI NEW YORK PA 249 WEST 17 STREET, NEW YORK, NY 10011 SN 0002-9610 J9 AM J SURG JI Am. J. Surg. PD DEC PY 1991 VL 162 IS 6 BP 603 EP 607 DI 10.1016/0002-9610(91)90118-W PG 5 WC Surgery SC Surgery GA GX232 UT WOS:A1991GX23200019 PM 1670234 ER PT J AU MILLS, JL FUJITANI, RM TAYLOR, SM AF MILLS, JL FUJITANI, RM TAYLOR, SM TI THE RETROPERITONEAL, LEFT FLANK APPROACH TO THE SUPRACELIAC AORTA FOR DIFFICULT AND REPEAT AORTIC RECONSTRUCTIONS SO AMERICAN JOURNAL OF SURGERY LA English DT Article; Proceedings Paper CT 43RD ANNUAL MEETING OF THE SOUTHWESTERN SURGICAL CONGRESS CY APR 21-24, 1991 CL LAS VEGAS, NV SP SW SURG CONGRESS ID FEMORAL-ARTERY BYPASS; ABDOMINAL-AORTA; ASCENDING AORTA; THORACIC AORTA; ROUTE AB Between 1986 and 1990, 11 patients with relative or absolute contraindications to standard infrarenal reconstructions underwent supraceliac aortofemoral bypass. The operation was performed through a left-flank incision extended into the eleventh intercostal space with retroperitoneal and extrapleural dissection. Indications included multiple failed infrarenal reconstructions in four patients, previous removal of infected aortofemoral bypass graft with failure of extra-anatomic bypass in five patients, prior para-aortic lymph node dissection and radiotherapy in one patient, and aortic aneurysmal disease proximal to the renal arteries in one patient. Bypass conduits included either a bifurcated Dacron graft or a tube graft to the left femoral artery with a femorofemoral cross-over graft; concomitant left renal artery reconstruction was performed in three patients. The mean supraceliac cross-clamp time was 24 minutes, and only one patient experienced transient postoperative acute tubular necrosis. There was no operative mortality. The graft limb patency was 95% after mean follow-up extending to 17 months (range: 5 months to 5 years). We conclude that the supraceliac aorta is a useful inflow source for aortofemoral reconstruction in difficult repeat cases. It can be approached easily without thoracotomy and avoids difficult infrarenal aortic dissection in a scarred field. The tunneling is easier than with descending thoracic aorta or ascending aorta inflow sources. In addition, this bypass is likely to be more durable than inflow reconstructions based on the axillary artery. RP MILLS, JL (reprint author), WILFORD HALL USAF MED CTR,DEPT GEN SURG,VASC SURG SERV,SGHSG,LACKLAND AFB,TX 78236, USA. OI Mills, Joseph/0000-0002-4955-4384 NR 19 TC 1 Z9 1 U1 0 U2 0 PU CAHNERS PUBL CO PI NEW YORK PA 249 WEST 17 STREET, NEW YORK, NY 10011 SN 0002-9610 J9 AM J SURG JI Am. J. Surg. PD DEC PY 1991 VL 162 IS 6 BP 638 EP 642 DI 10.1016/0002-9610(91)90126-X PG 5 WC Surgery SC Surgery GA GX232 UT WOS:A1991GX23200027 PM 1670241 ER PT J AU GROGL, M KREUTZER, RD MCHUGH, CP MARTIN, RK AF GROGL, M KREUTZER, RD MCHUGH, CP MARTIN, RK TI CHARACTERIZATION OF A LEISHMANIA ISOLATE FROM THE RODENT HOST NEOTOMA-MICROPUS COLLECTED IN TEXAS AND COMPARISON WITH HUMAN ISOLATES SO AMERICAN JOURNAL OF TROPICAL MEDICINE AND HYGIENE LA English DT Article ID CUTANEOUS LEISHMANIASIS; DERMAL LEISHMANIASIS; GEL-ELECTROPHORESIS; MOLECULAR KARYOTYPE; MEXICANA; SEPARATION; YEAST; GENE; DNAS AB We report the biological and biochemical parameters of Leishmania parasites (MNEO/US/90/WR972) isolated from a rodent host, Neotoma micropus, collected in Texas. Footpad inoculations of WR972 promastigotes into BALB/c mice and Syrian hamsters resulted in ulcerating lesions six and eight weeks post-inoculation, respectively. Using monoclonal antibody-stained touch preparations, amastigotes were found in the liver of both laboratory hosts. Infection of J774 macrophages with WR972 promastigotes supported the growth of amastigotes for 12 days at 35-degrees-C. The WR972 parasite was identified by enzyme electrophoresis as L. mexicana. Isozyme comparison of WR972 with 42 L. mexicana isolates (from humans and rodents) from four different endemic areas, including Texas, suggest that these parasite populations are identical for approximately 97% of their genetic loci. Pulse field gel electrophoresis (PFGE) of WR972 resolved 18 chromosomes with a size range of 300- > 2,000 kb. The karyotype strongly resembles that of two other Texas L. mexicana isolates from humans. Taken together, the PFGE, hybridization, and isoenzyme data suggest that the wood rat isolate (WR972) is identical to parasites from human cutaneous lesions isolated in Texas and Central America. In addition, the biological characteristics of WR972, its infectivity of BALB/c mice and the Syrian hamster, and the potential of the isolate to infect, transform, and divide in J774 macrophages indicate that WR972 will be pathogenic in humans if transmission occurs. Health care providers should consider this possibility when studying the epidemiology and control of cutaneous leishmaniasis in Texas. C1 YOUNGSTOWN STATE UNIV,DEPT BIOL,YOUNGSTOWN,OH 44555. USAF,SCH AEROTHERM,DIV EPIDEMIOL,BROOKS AFB,TX 78235. RP GROGL, M (reprint author), WALTER REED ARMY MED CTR,DIV EXPTL THERAPEUT,LEISHMANIA SECT,BLDG 500,WASHINGTON,DC 20307, USA. NR 28 TC 8 Z9 8 U1 0 U2 0 PU AMER SOC TROP MED & HYGIENE PI MCLEAN PA 8000 WESTPARK DRIVE SUITE 130, MCLEAN, VA 22101 SN 0002-9637 J9 AM J TROP MED HYG JI Am. J. Trop. Med. Hyg. PD DEC PY 1991 VL 45 IS 6 BP 714 EP 722 PG 9 WC Public, Environmental & Occupational Health; Tropical Medicine SC Public, Environmental & Occupational Health; Tropical Medicine GA HA015 UT WOS:A1991HA01500010 PM 1763798 ER PT J AU WELSH, BM AF WELSH, BM TI IMAGING PERFORMANCE ANALYSIS OF ADAPTIVE OPTICAL TELESCOPES USING LASER GUIDE STARS SO APPLIED OPTICS LA English DT Article DE ADAPTIVE OPTICS; ATMOSPHERIC OPTICS; ASTRONOMY ID MUTUAL COHERENCE FUNCTION; WAVE-FRONT; SLOPE MEASUREMENTS; ASTRONOMY; RECONSTRUCTION; COMPENSATION; DISTORTION; RESOLUTION; MIRRORS; DESIGN AB The use of laser guide stars in conjunction with adaptive optical telescopes offers the possibility of nearly diffraction-limited imaging performance from large, ground-based telescopes. We investigate the expected imaging performance of an adaptive telescope, using laser guide stars created in the mesospheric sodium (Na) layer. A 2-3-m class telescope is analyzed for the case of a single, on-axis guide star at an altitude of 92 km (the nominal height of the mesospheric Na layer). We analyze an annular telescope pupil with approximately 15 wave-front sensor subapertures and mirror actuators spanning the pupil diameter. The imaging performance is quantified in terms of the pupil-averaged rms wave-front error, the optical transfer function, the point spread function, the Strehl ratio, and finally the angular resolution. The performance analysis takes into account the degradation caused by the limitation of the wave-front sensor as well as the deformable mirror. These limitations include the finite spacing and size of the wave-front sensor subapertures and the spacing and influence function of the mirror actuators. The effects of anisoplanatism and shot noise are also included in the analysis. The results of the investigation indicate that a 3-m adaptive telescope using a single Na guide star is capable of achieving a Strehl ratio of 0.57 and an angular resolution nearly matching that of diffraction-limited performance (0-05 arcsec). This performance is achieved assuming that r0 = 20 cm and a 5-W laser is used to create the guide star. The effect of variations in seeing conditions and guide star brightness is also investigated. RP WELSH, BM (reprint author), USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,WRIGHT PATTERSON AFB,OH 45433, USA. NR 34 TC 10 Z9 10 U1 0 U2 2 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD DEC 1 PY 1991 VL 30 IS 34 BP 5021 EP 5030 PG 10 WC Optics SC Optics GA GX693 UT WOS:A1991GX69300009 PM 20717316 ER PT J AU ZIEGLER, BC SCHEPLER, KL AF ZIEGLER, BC SCHEPLER, KL TI TRANSMISSION AND DAMAGE-THRESHOLD MEASUREMENTS IN AGGASE2 AT 2.1 MU-M SO APPLIED OPTICS LA English DT Article DE SILVER GALLIUM SELENIDE; TRANSMISSION LOSS; DAMAGE THRESHOLD; NONLINEAR MATERIALS; INFRARED AB Measurements of transmission loss coefficients in AgGaSe2 at 2.1-mu-m ranged from 0.012 to 0.072 cm-1. Energy density, not peak-power density, proved to be the determining factor in AgGaSe2 damage threshold. Coated-surface damage thresholds originally were found to be in the 1.1-2.5-J/cm2 region by using 180-nsec laser pulses, but damage thresholds as high as 3.5 J/cm2, with a 3 J/cm2 average, were measured in coated samples with improved surface quality. RP ZIEGLER, BC (reprint author), WRIGHT LAB,ELOS,WRIGHT PATTERSON AFB,OH 45433, USA. NR 5 TC 22 Z9 22 U1 0 U2 2 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD DEC 1 PY 1991 VL 30 IS 34 BP 5077 EP 5080 PG 4 WC Optics SC Optics GA GX693 UT WOS:A1991GX69300016 PM 20717323 ER PT J AU WARNER, RD CARR, RW MCCLESKEY, FK JOHNSON, PC ELMER, LMG DAVISON, VE AF WARNER, RD CARR, RW MCCLESKEY, FK JOHNSON, PC ELMER, LMG DAVISON, VE TI A LARGE NONTYPICAL OUTBREAK OF NORWALK VIRUS - GASTROENTERITIS ASSOCIATED WITH EXPOSING CELERY TO NONPOTABLE WATER AND WITH CITROBACTER-FREUNDII SO ARCHIVES OF INTERNAL MEDICINE LA English DT Article ID TO-PERSON TRANSMISSION; NONBACTERIAL GASTROENTERITIS; ESCHERICHIA-COLI; EPIDEMIOLOGY; CONSUMPTION; ILLNESS; ANTIGEN; COLLEGE AB The US Air Force Academy experienced a point-source outbreak of gastroenteritis originally believed to be caused by Salmonella. The overall attack rate was 48% among approximately 3000 cadets and staff. Food-specific attack rates implicated chicken salad. The odds ratio for chicken salad consumption in ill cadets was 10.7 (95% confidence interval: 8.2; 13.8). The celery component had been exposed to nonpotable water. Citrobacter freundii were statistically associated with consumption of the suspected vehicle and subsequent illness. Most aspects were consistent with the epidemiology of Norwalk gastroenteritis. However, the clinical presentation was not typical of reported outbreaks. One hundred five cadets required intravenous rehydration. Serum samples implicated Norwalk virus as the most probable cause of this outbreak. The Centers for Disease Control (Atlanta, Ga) recently began national surveillance for viral gastroenteritis. All outbreaks of gastroenteritis associated with nonpotable water should be investigated for evidence of viral cause. C1 USAF,SCH AEROSP MED,DIV EPIDEMIOL,SERV EPIDEMIOL,BROOKS AFB,TX 78235. USAF,SCH AEROSP MED,DIV HUMAN SYST AFSC,BROOKS AFB,TX 78235. UNIV TEXAS,HLTH SCI CTR,DEPT INTERNAL MED,DIV GEN MED,HOUSTON,TX 77225. FU NCRR NIH HHS [RR-02558] NR 35 TC 38 Z9 39 U1 0 U2 3 PU AMER MEDICAL ASSOC PI CHICAGO PA 515 N STATE ST, CHICAGO, IL 60610 SN 0003-9926 J9 ARCH INTERN MED JI Arch. Intern. Med. PD DEC PY 1991 VL 151 IS 12 BP 2419 EP 2424 DI 10.1001/archinte.151.12.2419 PG 6 WC Medicine, General & Internal SC General & Internal Medicine GA HF433 UT WOS:A1991HF43300010 PM 1660704 ER PT J AU WELLMAN, MP AF WELLMAN, MP TI THE ECOLOGY OF COMPUTATION - HUBERMAN,BA SO ARTIFICIAL INTELLIGENCE LA English DT Book Review RP WELLMAN, MP (reprint author), USAF,WRIGHT LAB,AI TECHNOL OFF,WL-AAA-1,WRIGHT PATTERSON AFB,OH 45433, USA. NR 22 TC 2 Z9 2 U1 1 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0004-3702 J9 ARTIF INTELL JI Artif. Intell. PD DEC PY 1991 VL 52 IS 2 BP 205 EP 218 DI 10.1016/0004-3702(91)90044-K PG 14 WC Computer Science, Artificial Intelligence SC Computer Science GA GU498 UT WOS:A1991GU49800006 ER PT J AU KING, RE LOCHRIDGE, GK AF KING, RE LOCHRIDGE, GK TI FLIGHT PSYCHOLOGY AT SHEPPARD AIR-FORCE BASE SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Note ID AIRSICKNESS AB Flight psychology is the application of psychological principles to the unique environment of the aviator in order to enhance training, flight safety, and mission accomplishment. At Sheppard Air Force Base, TX, flight psychology is a cooperative effort between a clinical psychologist and the aeromedical services, with the former acting as a consultant to the latter. The primary focus of the flight psychology program is stress management, including managing the stress response of airsickness, for students in the Euro-NATO Joint Jet Pilot Training (ENJJPT) program. Psychological assessments of flying personnel, air traffic controllers, and individuals being considered for special duties constitute a valuable contribution to aeromedical services. We present clinical vignettes to illustrate the interaction of the flight psychologist and aeromedical services, and the effect on flying training and flight safety. RP KING, RE (reprint author), AOCN,ARMSTRONG LAB,DIV CLIN SCI,NEUROPSYCHIAT,BROOKS AFB,TX, USA. NR 11 TC 2 Z9 2 U1 0 U2 1 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD DEC PY 1991 VL 62 IS 12 BP 1185 EP 1188 PG 4 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA GR868 UT WOS:A1991GR86800012 PM 1755802 ER PT J AU KOMADINA, KH SCHENK, DA LAVEAU, P DUNCAN, CA CHAMBERS, SL AF KOMADINA, KH SCHENK, DA LAVEAU, P DUNCAN, CA CHAMBERS, SL TI INTEROBSERVER VARIABILITY IN THE INTERPRETATION OF PULMONARY-ARTERY CATHETER PRESSURE TRACINGS SO CHEST LA English DT Article ID ACUTE MYOCARDIAL-INFARCTION; CRITICALLY ILL PATIENTS; WEDGE PRESSURE; HEMODYNAMIC STATUS; HEART; EXPERIENCE; FREQUENCY; BLOOD AB Study objective: We evaluated the ability of three independent reviewers (R1, R2, R3) using waveform analysis to accurately identify confirmed valid PCWP tracings, and their ability to consistently report the PCWP numerical value. Design: Sixty PA and PCWP tracings were prospectively obtained and blindly reviewed by three independent critical care physicians. Setting: The medical ICU of Wilford Hall USAF Medical Center. Patients or participants: Twenty mechanically ventilated patients with PA catheters inserted for hemodynamic assessment. Interventions: Sixty PA and PCWP tracings were reviewed blindly and independently for acceptability using waveform criteria by three critical care physicians. While recording all 60 tracings, blood was aspirated from the distal port of the PA catheter with the balloon "wedged" and blood gas analysis was done. Each reviewer analyzed the PCWP tracings for validity using waveform criteria, and reported a numerical PCWP reading for those tracings judged valid by waveform criteria. Reviewer sensitivity, specificity and accuracy in performing waveform analysis were assessed by comparing their predictions with those tracings that were confirmed valid by the aspiration of pulmonary capillary blood. Inter-reviewer agreement upon which validity of PCWP tracings was based and reviewer agreement on the numerical PCWP reading were also assessed. All tracings were blindly reviewed by each physician, first without and then with an AP tracing to define end-expiration. Measurements and results: Thirty-eight of 60 PCWP tracings were confirmed valid by the aspiration of pulmonary capillary blood. In the remaining 22 tracings, mixed venous blood was aspirated with the balloon wedged, and tracing validity was unconfirmed. Reviewer accuracy in identifying confirmed valid PCWP tracings, using waveform analysis, was 50 percent for R1, 65 percent for R2 and 57 percent for R3. No reviewer's accuracy was significantly different from a random guess which would yield an accuracy of 50 percent. Agreement by all three reviewers in identifying valid PCWP tracings using waveform analysis varied from 37 percent in the absence of an AP tracing to 66 percent when an AP tracing was available to identify end-expiration (p < 0.003). Agreement by all three reviewers on the PCWP numerical reading (within 4 mm Hg) was 79 percent without an AP tracing and 96 percent with an AP tracing (p = NS). The numerical reading reported by the ICU nurses and house staff correlated closely with the reviewers' readings. Agreement with the reported PCWP reading was improved only for R2 by the addition of an AP tracing. Conclusion: We conclude that the validation of PCWP tracings by waveform analysis is subject to interobserver variability, and reviewer accuracy in identifying confirmed valid tracings was no better than a random guess. Agreement on the numerical PCWP reading was high among the reviewers as was agreement by each individual reviewer with the reported PCWP. Finally, the presence of an AP tracing, to define end-expiration, adds little to the interpretation of the PCWP numerical reading by experienced physicians. C1 UNIV TEXAS,HLTH SCI CTR,SAN ANTONIO,TX 78284. AUDIE L MURPHY MEM VET ADM MED CTR,PULM CRIT CARE SECT,SAN ANTONIO,TX 78284. WILFORD HALL USAF MED CTR,CARDIOL SECT,LACKLAND AFB,TX 78236. WILFORD HALL USAF MED CTR,PULM CRIT CARE SECT,LACKLAND AFB,TX 78236. RP KOMADINA, KH (reprint author), PARK NICOLLET MED CTR,5000 W 39TH ST,MINNEAPOLIS,MN 55416, USA. NR 19 TC 37 Z9 42 U1 0 U2 0 PU AMER COLL CHEST PHYSICIANS PI NORTHBROOK PA 3300 DUNDEE ROAD, NORTHBROOK, IL 60062-2348 SN 0012-3692 J9 CHEST JI Chest PD DEC PY 1991 VL 100 IS 6 BP 1647 EP 1654 DI 10.1378/chest.100.6.1647 PG 8 WC Critical Care Medicine; Respiratory System SC General & Internal Medicine; Respiratory System GA GU051 UT WOS:A1991GU05100033 PM 1959409 ER PT J AU BRYAN, CL COHEN, DJ DEW, JA TRINKLE, JK JENKINSON, SG AF BRYAN, CL COHEN, DJ DEW, JA TRINKLE, JK JENKINSON, SG TI GLUTATHIONE DECREASES THE PULMONARY REIMPLANTATION RESPONSE IN CANINE LUNG AUTOTRANSPLANTS SO CHEST LA English DT Article ID OXIDATIVE STRESS; RAT LUNG; TRANSPLANTATION; HEART; PRESERVATION; REPERFUSION; DISULFIDE; ISCHEMIA; STORAGE; DAMAGE AB The pulmonary reimplantation response (PRR) is a form of membrane permeability pulmonary edema occurring in lung transplants. The severity of the PRR reflects the quality and duration of lung graft preservation. Free radicals formed during ischemia with reperfusion in the autotransplanted dog lung may play a role in producing PRR. We hypothesized that the addition of reduced glutathione (GSH) to the preservative solution could decrease PRR if hydroperoxides are being formed. Six dogs underwent left lung autotransplantation after the lung was flushed with Euro-Collins solution (EC). These dogs demonstrated radiographic and histopathologic evidence of bilateral pulmonary edema, greatest in the transplanted left lung. They also had increases in lung wet to dry weight (W/D) ratios in both lungs (left, 12.0 +/- 0.9; right, 10.1 +/- 0.8) as compared with a group of five unmanipulated control animals (left, 6.0 +/- 0.5; right, 7.0 +/- 0.4). Malondialdehyde (MDA) concentrations were significantly increased in the transplanted left lungs (14 +/- 4) from this group as compared with the controls (5 +/- 7). Five additional dogs underwent left lung autotransplantation with GSH added to the EC cryopreservation fluid. These animals did not develop histologic or radiographic evidence of pulmonary edema, and W/D ratios as well as MDA concentrations were not different from those in controls. To evaluate the effect of ischemia alone on changes in lung GSH concentrations, ten additional dogs underwent left pneumonectomy. Left lungs were cryopreserved in EC + GSH. In five of the animals, the right lung was removed and preserved in EC alone. In the other five animals, the right lung remained in vivo for 3 h and was then removed. Lung GSH concentrations were doubled after 3 h of ischemia when incubated in EC + GSH compared to in vivo controls and to EC-treated lungs. These data suggest that GSH added to the preservation fluid prevents PRR following transplantation and that lung GSH concentrations actually increase during preservation prior to reimplantation and reperfusion if the lung graft is exposed to GSH in the preservation fluid. C1 AUDIE L MURPHY MEM VET ADM MED CTR,SAN ANTONIO,TX 78284. USAF,WILFORD HALL MED CTR,LACKLAND AFB,TX 78236. UNIV TEXAS,HLTH SCI CTR,DEPT MED,LUNG METAB UNIT,SAN ANTONIO,TX 78284. UNIV TEXAS,HLTH SCI CTR,DEPT SURG CARDIOTHORAC SURG,SAN ANTONIO,TX 78284. RP BRYAN, CL (reprint author), DIV PULM DIS,7400 MERTON MINTER BLVD,SAN ANTONIO,TX 78284, USA. NR 40 TC 18 Z9 19 U1 0 U2 0 PU AMER COLL CHEST PHYSICIANS PI NORTHBROOK PA 3300 DUNDEE ROAD, NORTHBROOK, IL 60062-2348 SN 0012-3692 J9 CHEST JI Chest PD DEC PY 1991 VL 100 IS 6 BP 1694 EP 1702 DI 10.1378/chest.100.6.1694 PG 9 WC Critical Care Medicine; Respiratory System SC General & Internal Medicine; Respiratory System GA GU051 UT WOS:A1991GU05100040 PM 1959416 ER PT J AU GREENBERG, RT HANKINS, GDV AF GREENBERG, RT HANKINS, GDV TI ANTIBIOTIC-THERAPY IN PRETERM PREMATURE RUPTURE OF MEMBRANES SO CLINICAL OBSTETRICS AND GYNECOLOGY LA English DT Article ID GROUP-B STREPTOCOCCI; INTRA-AMNIOTIC INFECTION; LABOR; FLUID; MANAGEMENT; AMNIOCENTESIS; ENDOTOXIN; PREGNANCY; CHORIOAMNIONITIS; INTERLEUKIN-1 RP GREENBERG, RT (reprint author), WILFORD HALL USAF MED CTR,DEPT OBSTET & GYNECOL,LACKLAND AFB,TX 78236, USA. NR 48 TC 4 Z9 4 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 0009-9201 J9 CLIN OBSTET GYNECOL JI Clin. Obstet. Gynecol. PD DEC PY 1991 VL 34 IS 4 BP 742 EP 750 DI 10.1097/00003081-199112000-00010 PG 9 WC Obstetrics & Gynecology SC Obstetrics & Gynecology GA GQ635 UT WOS:A1991GQ63500008 PM 1778016 ER PT J AU MORALES, C ANDRADE, F ANZUETO, A LEVINE, S MAXWELL, L JENKINSON, S AF MORALES, C ANDRADE, F ANZUETO, A LEVINE, S MAXWELL, L JENKINSON, S TI DIETHYLMALATE IMPAIRS DIAPHRAGMATIC FUNCTION DURING INSPIRATORY RESISTIVE BREATHING SO CLINICAL RESEARCH LA English DT Meeting Abstract C1 UNIV TEXAS,HLTH SCI CTR,DEPT MED,SAN ANTONIO,TX 78284. UNIV TEXAS,HLTH SCI CTR,DEPT PHYSIOL,SAN ANTONIO,TX 78284. AUDIE L MURPHY MEM VET ADM MED CTR,SAN ANTONIO,TX 78284. USAF,WILFORD HALL MED CTR,LACKLAND AFB,TX 78236. RI Andrade, Francisco/F-1258-2011 OI Andrade, Francisco/0000-0002-2460-5798 NR 1 TC 0 Z9 0 U1 0 U2 0 PU SLACK INC PI THOROFARE PA 6900 GROVE RD, THOROFARE, NJ 08086 SN 0009-9279 J9 CLIN RES JI Clin. Res. PD DEC PY 1991 VL 39 IS 4 BP A868 EP A868 PG 1 WC Medicine, Research & Experimental SC Research & Experimental Medicine GA GW912 UT WOS:A1991GW91200393 ER PT J AU STANCOMBE, BB WALSH, WF BRIDGES, WS CLARK, RH NULL, DM AF STANCOMBE, BB WALSH, WF BRIDGES, WS CLARK, RH NULL, DM TI SURFACTANT RESCUE FOR RESPIRATORY-DISTRESS SYNDROME SO CLINICAL RESEARCH LA English DT Meeting Abstract C1 USAF,WILFORD HALL MED CTR,LACKLAND AFB,TX 78236. USAF,KEESLER MED CTR,BILOXI,MS. RI Drin' / Дрінь, Yaroslav / Ярослав/A-5486-2017 OI Drin' / Дрінь, Yaroslav / Ярослав/0000-0003-0945-7325 NR 0 TC 1 Z9 1 U1 0 U2 0 PU SLACK INC PI THOROFARE PA 6900 GROVE RD, THOROFARE, NJ 08086 SN 0009-9279 J9 CLIN RES JI Clin. Res. PD DEC PY 1991 VL 39 IS 4 BP A865 EP A865 PG 1 WC Medicine, Research & Experimental SC Research & Experimental Medicine GA GW912 UT WOS:A1991GW91200378 ER PT J AU TILLIS, W BRYAN, C CHAMBERS, S DENEKE, S LAWRENCE, R JENKINSON, S AF TILLIS, W BRYAN, C CHAMBERS, S DENEKE, S LAWRENCE, R JENKINSON, S TI CATALASE ACTIVITY IN MESOTHELIAL CELLS, FIBROBLASTS, AND TYPE-II CELLS IS ASSOCIATED WITH VARIABLE RESISTANCE TO OXIDANT STRESS SO CLINICAL RESEARCH LA English DT Meeting Abstract C1 UNIV TEXAS,HLTH SCI CTR,SAN ANTONIO,TX 78284. AUDIE L MURPHY MEM VET ADM MED CTR,SAN ANTONIO,TX 78284. USAF,WILFORD HALL MED CTR,LACKLAND AFB,TX 78236. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SLACK INC PI THOROFARE PA 6900 GROVE RD, THOROFARE, NJ 08086 SN 0009-9279 J9 CLIN RES JI Clin. Res. PD DEC PY 1991 VL 39 IS 4 BP A812 EP A812 PG 1 WC Medicine, Research & Experimental SC Research & Experimental Medicine GA GW912 UT WOS:A1991GW91200092 ER PT J AU WALSH, WF PARANKA, MS STANCOMBE, BB AF WALSH, WF PARANKA, MS STANCOMBE, BB TI SURFACTANT LAVAGE IN A PIGLET MODEL OF MECONIUM ASPIRATION SO CLINICAL RESEARCH LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SLACK INC PI THOROFARE PA 6900 GROVE RD, THOROFARE, NJ 08086 SN 0009-9279 J9 CLIN RES JI Clin. Res. PD DEC PY 1991 VL 39 IS 4 BP A865 EP A865 PG 1 WC Medicine, Research & Experimental SC Research & Experimental Medicine GA GW912 UT WOS:A1991GW91200380 ER PT J AU WERNER, EJ BROXSON, EH TUCKER, EL GIROUX, DS ABSHIRE, TC AF WERNER, EJ BROXSON, EH TUCKER, EL GIROUX, DS ABSHIRE, TC TI PREVALENCE OF VONWILLEBRAND DISEASE IN CHILDREN - A MULTIETHNIC STUDY SO CLINICAL RESEARCH LA English DT Meeting Abstract C1 EASTERN VIRGINIA MED SCH,CHILDRENS HOSP KINGS DAUGHTERS,NORFOLK,VA 23501. USAF,MED CTR,WRIGHT PATTERSON AFB,OH 45433. KTTC MED CTR,KEESLER AFB,MS. NR 0 TC 0 Z9 0 U1 1 U2 1 PU SLACK INC PI THOROFARE PA 6900 GROVE RD, THOROFARE, NJ 08086 SN 0009-9279 J9 CLIN RES JI Clin. Res. PD DEC PY 1991 VL 39 IS 4 BP A840 EP A840 PG 1 WC Medicine, Research & Experimental SC Research & Experimental Medicine GA GW912 UT WOS:A1991GW91200244 ER PT J AU PORTER, DB BIRD, ME WUNDER, A AF PORTER, DB BIRD, ME WUNDER, A TI COMPETITION, COOPERATION, SATISFACTION, AND THE PERFORMANCE OF COMPLEX TASKS AMONG AIR-FORCE CADETS SO CURRENT PSYCHOLOGY-RESEARCH & REVIEWS LA English DT Article ID CONSTRUCT; BEHAVIOR RP PORTER, DB (reprint author), USAF ACAD,DEPT BEHAV SCI & LEADERSHIP,COLORADO SPRINGS,CO 80840, USA. NR 8 TC 1 Z9 1 U1 0 U2 0 PU TRANSACTION PERIOD CONSORTIUM PI NEW BRUNSWICK PA DEPT 3091 RUTGERS-THE STATE UNIV OF NJ, NEW BRUNSWICK, NJ 08903 SN 0737-8262 J9 CURR PSYCHOL RES REV PD WIN PY 1991 VL 9 IS 4 BP 347 EP 354 PG 8 WC Psychology SC Psychology GA GF228 UT WOS:A1991GF22800004 ER PT J AU BLAUER, KL POTH, M ROGERS, WM BERNTON, EW AF BLAUER, KL POTH, M ROGERS, WM BERNTON, EW TI DEHYDROEPIANDROSTERONE ANTAGONIZES THE SUPPRESSIVE EFFECTS OF DEXAMETHASONE ON LYMPHOCYTE-PROLIFERATION SO ENDOCRINOLOGY LA English DT Article ID LYMPHOKINE PRODUCTION INVIVO; T-CELLS; SERUM; ESTROGEN; SULFATE; CANCER; HELPER; DHEA; MICE; CORTICOSTEROIDS AB Administration of dehydroepiandrosterone (DHEA) appears to have physiological effects opposing those of glucocorticoids in several animal models. Recently, immunomodulatory effects of treatment with DHEA have been described. This paper reports the effects of DHEA treatment on splenocyte blastogenic responses as well as thymic and spleen weights in (CH)-H-3/HeN mice. Pretreatment of mice with sc DHEA (60 mg/kg.day) for 3 days in vivo antagonized the profound suppression of in vitro blastogenic responses seen in T- and B-lymphocytes after a single injection of dexamethasone (DEX; 60 mg/kg). Pretreatment with DHEA also significantly reduced dexamethasone-induced thymic and splenic atrophy. Splenic lymphocytes from DHEA-treated mice were markedly more resistant to in vitro suppression of blastogenesis by DEX at 10(-6)-10(-8) M compared to lymphocytes from control mice. However, DHEA added to lymphocyte cultures in vitro over a concentration range from 10(-7)-10(-8) M failed to protect against suppression of mitogenic responses caused by addition of DEX to cultures. In summary, DHEA given in vivo antagonizes the suppressive actions of DEX on lymphoid target tissues in mice. C1 WALTER REED ARMY MED CTR,DIV REPROD ENDOCRINOL,WASHINGTON,DC 20307. UNIFORMED SERV UNIV HLTH SCI,DEPT PEDIAT,BETHESDA,MD 20814. WALTER REED ARMY MED CTR,DEPT MED NEUROSCI,DIV NEUROPSYCHIAT,WASHINGTON,DC 20307. RP BLAUER, KL (reprint author), USAF,MED CTR,DEPT OBSTET & GYNECOL,DIV REPROD ENDOCRINOL,WRIGHT PATTERSON AFB,OH 45433, USA. NR 38 TC 190 Z9 193 U1 0 U2 7 PU ENDOCRINE SOC PI BETHESDA PA 4350 EAST WEST HIGHWAY SUITE 500, BETHESDA, MD 20814-4110 SN 0013-7227 J9 ENDOCRINOLOGY JI Endocrinology PD DEC PY 1991 VL 129 IS 6 BP 3174 EP 3179 PG 6 WC Endocrinology & Metabolism SC Endocrinology & Metabolism GA GT670 UT WOS:A1991GT67000048 PM 1835439 ER PT J AU ENDERLE, JD ENGELKEN, EJ STILES, RN AF ENDERLE, JD ENGELKEN, EJ STILES, RN TI A COMPARISON OF STATIC AND DYNAMIC CHARACTERISTICS BETWEEN RECTUS EYE MUSCLE AND LINEAR MUSCLE MODEL PREDICTIONS SO IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING LA English DT Article ID MOVEMENTS; NEURONS AB The characteristics of a muscle model are analyzed using rectus eye muscle parameter values and compared to rectus eye muscle data. The muscle is modeled as a viscoelastic parallel combination connected to a parallel combination of active state tension generator, viscosity element, and length tension elastic element. Each of the elements is linear and their existence is supported with physiological evidence. The static and dynamic properties of the muscle model are compared to rectus eye muscle data. The length-tension characteristics of the model are in good agreement with the data within the operating region of the muscle. With the muscle model incorporated into a lever system to match the isotonic experiment paradigm, simulation results for this linear system yield a nonlinear force-velocity curve. Moreover, the family of force-velocity curves generated with different stimulus rates reported in the literature match the predictions of the model without parametric changes. The results of this paper are important in studies involving the oculomotor plant and oculomotor neural networks. Additionally, these results may be applicable to other muscles. C1 UNIV N DAKOTA,SCH MED,GRAND FORKS,ND 58202. USAF,SCH AEROSP MED,DIV CLIN SCI,VESTIBULAR LAB,BROOKS AFB,TX 78235. UNIV TENNESSEE CTR HLTH SCI,DEPT PHYSIOL & BIOPHYS,MEMPHIS,TN 38163. RP ENDERLE, JD (reprint author), N DAKOTA STATE UNIV,DEPT ELECT & ELECTR ENGN,DIV BIOENGN,FARGO,ND 58105, USA. RI CHASSAGNE, Fanette/B-7212-2012 NR 27 TC 12 Z9 12 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9294 J9 IEEE T BIO-MED ENG JI IEEE Trans. Biomed. Eng. PD DEC PY 1991 VL 38 IS 12 BP 1235 EP 1245 DI 10.1109/10.137289 PG 11 WC Engineering, Biomedical SC Engineering GA GT086 UT WOS:A1991GT08600008 PM 1774085 ER PT J AU MULLEN, EG GUSSENHOVEN, MS HARDY, DA MURPHY, GP LLOYD, JWF SLUTTER, W MALCOLM, P KELLOGG, PJ MONSON, S AF MULLEN, EG GUSSENHOVEN, MS HARDY, DA MURPHY, GP LLOYD, JWF SLUTTER, W MALCOLM, P KELLOGG, PJ MONSON, S TI A SPACECRAFT CHARGING STUDY ON THE SCEX-3 ROCKET SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article; Proceedings Paper CT 28TH INTERNATIONAL CONF ON NUCLEAR AND SPACE RADIATION EFFECTS CY JUL 15-19, 1991 CL SAN DIEGO, CA SP IEEE, DEFENSE NUCL AGCY, SANDIA NATL LABS, JET PROPULS LAB AB Instruments on the SCEX 3 rocket payload flown from the Poker Flats Rocket Range in February 1990 were used to study charging during electron beam emissions. The data show that electrostatic analyzers can be used to measure vehicle charging and direct beam return currents in dense plasma conditions. The data also show return current dependencies on pitch angle, beam current and beam energy. C1 USAF ACAD,COLORADO SPRINGS,CO 80840. UNIV MINNESOTA,MINNEAPOLIS,MN 55455. RP MULLEN, EG (reprint author), PHILLIPS LAB,GEOPHYS DIRECTORATE,BEDFORD,MA 01731, USA. NR 10 TC 0 Z9 0 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD DEC PY 1991 VL 38 IS 6 BP 1622 EP 1628 DI 10.1109/23.124154 PN 1 PG 7 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA GZ173 UT WOS:A1991GZ17300081 ER PT J AU MCNULTY, PJ BEAUVAIS, WJ ABDELKADER, WG ELTELEATY, SS MULLEN, EG RAY, KP AF MCNULTY, PJ BEAUVAIS, WJ ABDELKADER, WG ELTELEATY, SS MULLEN, EG RAY, KP TI TEST OF SEU ALGORITHMS AGAINST PRELIMINARY CRRES SATELLITE DATA SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article; Proceedings Paper CT 28TH INTERNATIONAL CONF ON NUCLEAR AND SPACE RADIATION EFFECTS CY JUL 15-19, 1991 CL SAN DIEGO, CA SP IEEE, DEFENSE NUCL AGCY, SANDIA NATL LABS, JET PROPULS LAB AB The CRRES satellite's highly elliptical orbit exposes the SEU-sensitive devices within the Microelectronics Package to both the trapped protons of the inner radiation belts and the cosmic rays of deep space. Preliminary data from sensitive devices show more upsets due to protons than due to cosmic rays on this type orbit. This is consistent with pulse-height spectra measured from a photodiode within the package. Preliminary data obtained with the Ratemeter experiment in the inner radiation belts are in reasonable agreement with predictions based on the trapped proton spectra given by the NASA AP8 model for solar maximum combined with CUPID simulations of the spallation reactions near the sensitive volumes of the memory elements. The more limited data from deep space is in agreement with the CREME calculations for cosmic ray traversals. CUPID is also in relatively good agreement with the pulse-height spectra measured in the inner belts as part of the PHA experiment. C1 USAF,GEOPHYS LAB,DIV SPACE PHYS,BEDFORD,MA 01731. RP MCNULTY, PJ (reprint author), CLEMSON UNIV,DEPT PHYS & ASTRON,CLEMSON,SC 29634, USA. NR 6 TC 20 Z9 20 U1 1 U2 1 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD DEC PY 1991 VL 38 IS 6 BP 1642 EP 1646 DI 10.1109/23.124157 PN 1 PG 5 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA GZ173 UT WOS:A1991GZ17300084 ER PT J AU GARSCADDEN, A KUSHNER, MJ EDEN, JG AF GARSCADDEN, A KUSHNER, MJ EDEN, JG TI PLASMA PHYSICS ISSUES IN GAS-DISCHARGE LASER DEVELOPMENT SO IEEE TRANSACTIONS ON PLASMA SCIENCE LA English DT Review ID X-RAY LASER; RESOLVED GAIN MEASUREMENTS; ULTRAVIOLET F2 LASERS; PREIONIZED XECL LASER; PUMPED KRF LASER; SHORT-WAVELENGTH; THEORETICAL EVALUATION; ION LASER; BEAM; CO2 AB An account is given of the interplay between partially ionized plasma physics and the development of gas discharge lasers. Gas discharge excitation has provided a wide array of laser devices extending from the soft X-ray region to the far infrared. The scaling of gas discharge lasers in power and energy also covers many orders of magnitude. The particular features of three regimes are discussed: short wavelength lasers (deep UV to soft X-ray); visible and near UV lasers; and infrared molecular gas lasers. The current status (Fall 1990) of these areas is reviewed, and an assessment is made of future research topics that are perceived to be important. C1 UNIV ILLINOIS, DEPT ELECT & COMP ENGN, URBANA, IL 61801 USA. RP WRIGHT LAB, WRIGHT PATTERSON AFB, OH 45433 USA. RI Kushner, Mark/A-7362-2008; Kushner, Mark/D-4547-2015 NR 122 TC 9 Z9 9 U1 4 U2 11 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA SN 0093-3813 EI 1939-9375 J9 IEEE T PLASMA SCI JI IEEE Trans. Plasma Sci. PD DEC PY 1991 VL 19 IS 6 BP 1013 EP 1031 DI 10.1109/27.125028 PG 19 WC Physics, Fluids & Plasmas SC Physics GA HD295 UT WOS:A1991HD29500004 ER PT J AU RHODEN, WE BANTON, DW KITCHEN, DR MASKOWITZ, JV AF RHODEN, WE BANTON, DW KITCHEN, DR MASKOWITZ, JV TI OBSERVATION OF ELECTROMIGRATION AT LOW-TEMPERATURE SO IEEE TRANSACTIONS ON RELIABILITY LA English DT Article DE ELECTROMIGRATION; MEAN TIME TO FAILURE; LOW TEMPERATURE AB Electromigration and mean time-to-failure were investigated for un-glassed thin aluminum stripes over the temperature range of 223 K to 347 K. Thermal effects are minimized by sinking heat from the linestripe through the substrate to a miniature cryogenic refrigerator. This test technique allows the investigation of structure and current interactions while suppressing the effects of an added temperature factor. The circuit was stressed by direct current densities greater than 4 x 10(6) A/cm2. Electromigration damage was induced in a test stripe at temperatures near O-degrees-C. For the temperature range of 347 K to 267 K, an activation energy of 0.30 eV was calculated, indicating that surface migration is the dominant failure mechanism. For temperatures between 267 K and 223 K, a calculated activation energy of 0. 12 eV suggests a different failure mechanism which was subsequently identified as stripe separation from the substrate. C1 DIV FOREIGN TECHNOL,ADV RES DIV,WRIGHT PATTERSON AFB,OH 45433. USAF,SCH ENGN,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433. USAF ACAD,DEPT PHYS,COLORADO SPRINGS,CO 80840. RP RHODEN, WE (reprint author), DIV AERONAUT SYST,B-1B SYST PROGRAM,WRIGHT PATTERSON AFB,OH 45433, USA. NR 12 TC 0 Z9 0 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9529 J9 IEEE T RELIAB JI IEEE Trans. Reliab. PD DEC PY 1991 VL 40 IS 5 BP 524 EP 530 DI 10.1109/24.106767 PG 7 WC Computer Science, Hardware & Architecture; Computer Science, Software Engineering; Engineering, Electrical & Electronic SC Computer Science; Engineering GA GX888 UT WOS:A1991GX88800007 ER PT J AU WALSH, PJ DEGNAN, JH AF WALSH, PJ DEGNAN, JH TI ANALYSIS OF HIGH-ENERGY PLASMA FORMATION IN HYDROGEN SO JOURNAL OF APPLIED PHYSICS LA English DT Article AB Analysis is presented on the position, velocity, acceleration, mass, size, and shape of the hydrogen plasma formed by a 88-kJ pulse within a coaxial injection and accelerated into a coaxial expansion chamber. Within the expansion chamber of the 1.25-m-long apparatus, the velocity was obtained near the positions of three sets of current probes and exceeds 44 cm/ mu-s. The acceleration of the plasma in the acceleration chamber increases with time to values approaching 30 cm/mu-s2 and the plasma length averages nearly 30 cm. Numerical inversion of the circuit current measured by a current probe near the base of the injection chamber yields the time variation of the circuit inductance produced by the motion of the plasma. From the inductance the position of the plasma during the pulse is inferred throughout the whole of the apparatus up to the end wall of the expansion chamber. The inversion analysis agrees with the probe analysis if it is assumed that the plasma extrudes from the injection chamber at approximately the radius of that chamber. Mass is lost by the accelerated plasma and specific mass values are derived, versus time, for cases when plasma momentum is conserved and not conserved. Both values extrapolate, at zero time, to the measured mass of injected hydrogen. There is good indication that the plasma survives reflection from the end wall. C1 USAF,WEAP LAB,PLASMA PHYS BRANCH,KIRTLAND AFB,NM 87117. RP WALSH, PJ (reprint author), FAIRLEIGH DICKINSON UNIV,DEPT ELECT ENGN,TEANECK,NJ 07666, USA. NR 5 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD DEC 1 PY 1991 VL 70 IS 11 BP 6718 EP 6725 DI 10.1063/1.349846 PG 8 WC Physics, Applied SC Physics GA GU049 UT WOS:A1991GU04900012 ER PT J AU MALL, S ERMER, PG AF MALL, S ERMER, PG TI THERMAL FATIGUE BEHAVIOR OF A UNIDIRECTIONAL SCS6/TI-15-3 METAL MATRIX COMPOSITE SO JOURNAL OF COMPOSITE MATERIALS LA English DT Article AB Damage mechanisms in a unidirectional titanium matrix composite with silicon carbide fibers (SCS6/Ti-15-3) subjected to thermal cycling from 149-degrees-C to 427-degrees-C and 149-degrees-C to 649-degrees-C were investigated. The degradation of the reaction zone was the first sign of damage due to thermal cycling. It initiated at 500 cycles and continued to grow with increase of thermal cycles. The Young's modulus, Poisson's ratio and residual tensile strength did not change due to thermal cycling up to 15,000 cycles for both temperature ranges. However, the observed internal damage as the degradation of the reaction zone manifested in the form of linear stress-strain response during residual tensile test. A simplified micromechanics analysis was also conducted to assess the state of stress to interpret the experimentally observed response of the tested metal matrix composite. C1 USAF,WASHINGTON,DC 20330. RP MALL, S (reprint author), AIR FORCE INST TECHNOL,DEPT AERONAUT & ASTRONAUT,WRIGHT PATTERSON AFB,OH 45433, USA. NR 8 TC 24 Z9 24 U1 0 U2 0 PU TECHNOMIC PUBL CO INC PI LANCASTER PA 851 NEW HOLLAND AVE, BOX 3535, LANCASTER, PA 17604 SN 0021-9983 J9 J COMPOS MATER JI J. Compos Mater. PD DEC PY 1991 VL 25 IS 12 BP 1668 EP 1686 PG 19 WC Materials Science, Composites SC Materials Science GA GZ668 UT WOS:A1991GZ66800007 ER PT J AU LAI, ST AF LAI, ST TI THEORY AND OBSERVATION OF TRIPLE-ROOT JUMP IN SPACECRAFT CHARGING - REPLY SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article RP LAI, ST (reprint author), USAF,PHILLIPS LAB,AFSC,BEDFORD,MA 01731, USA. NR 2 TC 0 Z9 0 U1 0 U2 1 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES JI J. Geophys. Res-Space Phys. PD DEC 1 PY 1991 VL 96 IS A12 BP 21413 EP 21413 DI 10.1029/91JA02430 PG 1 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA GU768 UT WOS:A1991GU76800042 ER PT J AU DEGROOT, AS CLERICI, M HOSMALIN, A HUGHES, SH BARND, D HENDRIX, CW HOUGHTEN, R SHEARER, GM BERZOFSKY, JA AF DEGROOT, AS CLERICI, M HOSMALIN, A HUGHES, SH BARND, D HENDRIX, CW HOUGHTEN, R SHEARER, GM BERZOFSKY, JA TI HUMAN-IMMUNODEFICIENCY-VIRUS REVERSE-TRANSCRIPTASE T-HELPER EPITOPES IDENTIFIED IN MICE AND HUMANS - CORRELATION WITH A CYTOTOXIC T-CELL EPITOPE SO JOURNAL OF INFECTIOUS DISEASES LA English DT Article ID TOXIC LYMPHOCYTES-T; CIRCUMSPOROZOITE PROTEIN; PROLIFERATIVE RESPONSE; SEROPOSITIVE INDIVIDUALS; PLASMODIUM-FALCIPARUM; SYNTHETIC PEPTIDES; FINE SPECIFICITY; ANTIGENIC SITES; VACCINIA VIRUS; HIV-1 AB T cell immunity may be critical to development of a vaccine for human immunodeficiency virus (HIV-1). T helper epitopes were identified in three predominantly conserved regions in the HIV-1 reverse transcriptase by using reverse transcriptase-immunized mice of five major histocompatibility complex haplotypes. One peptide (residues 38-52) that stimulated H-2k T cells also contained an epitope recognized by cytotoxic T cells from the same mice and from HIV-infected patients. Such concordance between helper and cytotoxic T lymphocyte epitopes, observed in four cases, may be important in vaccine development. Peptide 36-52 was recognized by interleukin-2-producing peripheral blood T cells from 9 of 17 HIV-seropositive humans studied, of multiple human leukocyte antigen-DR and -DQ types. The broad recognition of this peptide by both helper and cytotoxic T cells substantiates its potential importance in a vaccine. C1 NCI, METAB BRANCH, MOLEC IMMUNOGENET & VACCINE RES SECT, BETHESDA, MD 20892 USA. NCI, EXPTL IMMUNOL BRANCH, BETHESDA, MD 20892 USA. NCI, FREDERICK CANC RES FACIL, ABL BASIC RES PROGRAM, FREDERICK, MD 21701 USA. DEV CTR, FREDERICK, MD USA. USAF, MED CTR, HIV UNIT, LACKLAND AFB, TX 78236 USA. TORREY PINES INST MOLEC STUDIES, SAN DIEGO, CA USA. RI De Groot, Anne/B-6221-2013; Hendrix, Craig/G-4182-2014 OI De Groot, Anne/0000-0001-5911-1459; Hendrix, Craig/0000-0002-5696-8665 NR 59 TC 32 Z9 33 U1 0 U2 1 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0022-1899 J9 J INFECT DIS JI J. Infect. Dis. PD DEC PY 1991 VL 164 IS 6 BP 1058 EP 1065 PG 8 WC Immunology; Infectious Diseases; Microbiology SC Immunology; Infectious Diseases; Microbiology GA GR660 UT WOS:A1991GR66000003 PM 1720151 ER PT J AU MASSEY, MD STEVENS, JS AF MASSEY, MD STEVENS, JS TI RESIDUAL SPLEEN FOUND ON DENATURED RED-BLOOD-CELL SCAN FOLLOWING NEGATIVE COLLOID SCANS SO JOURNAL OF NUCLEAR MEDICINE LA English DT Article ID ERYTHROCYTES AB The technetium-sulfur colloid liver-spleen examination is widely used to evaluate patients with idiopathic thrombocytopenic purpura for residual splenic tissue following splenectomy. Technetium-labeled heat-damaged red blood cell imaging is another sensitive test for residual splenic tissue. We recently encountered a patient with idiopathic thrombocytopenic purpura who was initially evaluated with a technetium sulfur colloid scan which was negative. A denatured red blood cell scan was subsequently performed which revealed intense focal activity in the region of the splenic bed. Surgery confirmed this to be splenic tissue. Our results emphasize the utility of the denatured red blood cell examination in the setting of strong clinical suspicion for residual splenic tissue following a negative sulfur colloid study. C1 OREGON HLTH SCI UNIV,DEPT DIAGNOST RADIOL,DIV NUCL MED,MAIL CODE UHN 72,PORTLAND,OR 97201. WILFORD HALL USAF MED CTR,DEPT NUCL MED,LACKLAND AFB,TX 78236. RP STEVENS, JS (reprint author), OREGON HLTH SCI UNIV,DEPT DIAGNOST RADIOL,DIV NUCL MED,MAIL CODE UHN 72,PORTLAND,OR 97201, USA. NR 3 TC 21 Z9 21 U1 0 U2 0 PU SOC NUCLEAR MEDICINE INC PI RESTON PA 1850 SAMUEL MORSE DR, RESTON, VA 22090-5316 SN 0161-5505 J9 J NUCL MED JI J. Nucl. Med. PD DEC PY 1991 VL 32 IS 12 BP 2286 EP 2287 PG 2 WC Radiology, Nuclear Medicine & Medical Imaging SC Radiology, Nuclear Medicine & Medical Imaging GA GU534 UT WOS:A1991GU53400025 PM 1744718 ER PT J AU ESCHLER, BM RAPLEY, JW AF ESCHLER, BM RAPLEY, JW TI MECHANICAL AND CHEMICAL ROOT PREPARATION INVITRO - EFFICIENCY OF PLAQUE AND CALCULUS REMOVAL SO JOURNAL OF PERIODONTOLOGY LA English DT Article DE ANTIFORMIN; TOOTH ROOT; SCALING; PLANING; DENTAL PLAQUE PREVENTION AND CONTROL; DENTAL CALCULUS PREVENTION AND CONTROL; ULTRASONICS THERAPEUTIC USE ID PERIODONTALLY DISEASED ROOTS; CITRIC-ACID; BACTERIAL-ENDOTOXIN; MOLAR TEETH; SURFACES; INSTRUMENTATION; REATTACHMENT; ATTACHMENT; THERAPY; AGENTS AB THE AIM OF THIS INVESTIGATION was to compare the effectiveness of several different methods of root instrumentation by measuring and comparing the amount of residual stained material following treatment. Also, 2 different methods of quantitating residual stained material were compared. A total of 90 periodontally-involved teeth were extracted and randomly assigned to 1 of 8 treatment groups or to the untreated control group. Experimental treatments consisted of one or a combination of the following: Columbia 13-14 curet, P-10 ultrasonic instrument, diamond-coated P-10 ultrasonic instrument, or antiformin/citric acid chemical treatment. Selected samples were examined using light microscopy in order to determine the amount of cementum removed during root instrumentation. Residual stained material was quantitated using a method of grid-square analysis as well as by the use of photographs and a digitizing tablet. Following instrumentation, it was noted in histologic sections that the complete removal of cementum was rare, although all of the cementum was removed by some experimental treatments in some areas. All mechanical methods of root instrumentation were found to be essentially equal in effectiveness with respect to the removal of plaque and calculus. Chemical debridement alone was found to be ineffective. It was further noted that the grid-square method of analysis produced measurements that were 2 to 8 times higher than measurements produced by the digitizing tablet. C1 WILFORD HALL USAF MED CTR,SGS,LACKLAND AFB,TX 78236. NR 33 TC 16 Z9 18 U1 0 U2 0 PU AMER ACAD PERIODONTOLOGY PI CHICAGO PA 737 NORTH MICHIGAN AVENUE, SUITE 800, CHICAGO, IL 60611-2690 SN 0022-3492 J9 J PERIODONTOL JI J. Periodont. PD DEC PY 1991 VL 62 IS 12 BP 755 EP 760 PG 6 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA GV638 UT WOS:A1991GV63800006 PM 1722511 ER PT J AU GURECKIS, KM BURGESS, JO SCHWARTZ, RS AF GURECKIS, KM BURGESS, JO SCHWARTZ, RS TI CUTTING EFFECTIVENESS OF DIAMOND INSTRUMENTS SUBJECTED TO CYCLIC STERILIZATION METHODS SO JOURNAL OF PROSTHETIC DENTISTRY LA English DT Article ID BURS AB The effect of repeated sterilization on the cutting effectiveness of one brand of rotary dental diamond cutting instruments was measured. Four groups of five diamond burs were sterilized by four methods: (1) sterilization with a chemical agent (Sporicidin); (2) steam under pressure (autoclave); (3) dry heat (Dri-Clave); or (4) chemical vapor (Chemiclave). Each group of diamond instruments made a timed cut in a ceramic block. This cut and all subsequent cuts were measured and were used to determine a baseline cutting effectiveness. Each group of diamond burs was then ultrasonically cleaned, sterilized, and another cut was made. At the end of 10 cycles there was no difference in cutting efficiency of the dental diamond instruments. However, there are differences in the cutting efficiency of individual diamond instruments. The SEM evaluation made prior to cutting and at the end of the 10 cycles of sterilization demonstrated that diamond wear was similar in all groups and that little diamond particle loss occurred in any group. C1 WILFORD HALL USAF MED CTR,DEPT GEN DENT,LACKLAND AFB,TX 78236. WILFORD HALL USAF MED CTR,DENT DIRECTORATE,LACKLAND AFB,TX 78236. UNIV TEXAS,HLTH SCI CTR,SCH DENT,DEPT GEN PRACTICE,SAN ANTONIO,TX 78284. NR 16 TC 13 Z9 15 U1 0 U2 4 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0022-3913 J9 J PROSTHET DENT JI J. Prosthet. Dent. PD DEC PY 1991 VL 66 IS 6 BP 721 EP 726 DI 10.1016/0022-3913(91)90402-I PG 6 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA GR859 UT WOS:A1991GR85900001 PM 1666657 ER PT J AU POPE, LL HANKINS, GDV AF POPE, LL HANKINS, GDV TI PULSE OXIMETRY - APPLICATION IN THE LABOR-AND-DELIVERY UNIT OF A TERTIARY CARE CENTER SO JOURNAL OF REPRODUCTIVE MEDICINE LA English DT Article AB Pulse oximetry is a noninvasive early warning system capable of alerting the nursing and medical staff of the occurrence of arterial hemoglobin desaturation and resultant hypoxemia. This technology has already achieved widespread use intraoperatively, in the recovery area and in medical and surgical intensive care units. Application during labor and delivery, another acute care setting often involving emergency conditions, is a logical extension. We applied this technology in the labor-and-delivery suite. The degree of arterial desaturation (absolute percent) and range of values appear greater in pregnancy than in the pregnant woman's healthy, nonpregnant counterpart. RP POPE, LL (reprint author), WILFORD HALL USAF MED CTR,DEPT OBSTET & GYNECOL,LACKLAND AFB,TX 78236, USA. NR 9 TC 9 Z9 9 U1 0 U2 1 PU SCI PRINTERS & PUBL INC PI ST LOUIS PA P.O. DRAWER 12425 8342 OLIVE BLVD, ST LOUIS, MO 63132 SN 0024-7758 J9 J REPROD MED JI J. Reprod. Med. PD DEC PY 1991 VL 36 IS 12 BP 853 EP 856 PG 4 WC Obstetrics & Gynecology SC Obstetrics & Gynecology GA GX454 UT WOS:A1991GX45400004 PM 1816395 ER PT J AU MYERS, MEF GREGOIRE, MB SPEARS, MC AF MYERS, MEF GREGOIRE, MB SPEARS, MC TI DELEGATION OF CLINICAL DIETETIC TASKS IN MILITARY AND CIVILIAN HOSPITALS - IMPLICATIONS FOR PRACTICE SO JOURNAL OF THE AMERICAN DIETETIC ASSOCIATION LA English DT Article ID TECHNICIANS; DIETITIANS AB The purposes of our research were two-fold: to determine perceptions of the quality of task performance and to identify dietetic personnel currently performing clinical dietetic tasks in military and civilian hospitals. Questionnaires were returned from 309 dietitians and 208 dietetic support personnel at 151 military and civilian hospitals (73% response overall). For tasks completed by support personnel, no task was rated as having optimum quality, 1 was rated as highly acceptable, 6 as acceptable, 19 as somewhat unacceptable, and 4 as unacceptable. Current performance ratings indicated that 1 task was performed solely by dietitians, 21 were completed by dietitians with assistance, 6 were completed jointly by dietitians and support personnel, 2 were completed by support personnel with supervision by dietitians, and no task was completed independently by support personnel. Tasks were grouped into four categories: basic clinical dietetics (11 tasks), intermediate and in-depth clinical dietetics (12 tasks), outpatient nutrition clinic (5 tasks), and nutrition education (community) (4 tasks). Quality scores for the US Air Force (USAF) hospitals were higher for all task categories except intermediate and indepth clinical dietetic tasks. The quality scores of support personnel were higher than those of dietitians for all task categories. The USAF performance scores indicated significantly more involvement of support personnel. Generally, the performance scores of dietitians increased with experience; the scores of support personnel decreased with experience. Correlations between quality and performance ratings for individual tasks revealed low to moderate relationships. Our results suggest that additional delegation of tasks to dietetic support personnel may be possible without negatively affecting perceptions of the quality of task outcome. More research is needed to evaluate the cost-effectiveness of various delegation strategies. C1 KANSAS STATE UNIV AGR & APPL SCI,DEPT HOTEL RESTAURANT INST MANAGEMENT & DIETET,MANHATTAN,KS 66506. USAF,MED CTR,NUTR MED CTR,SCOTT AFB,IL 62225. NR 24 TC 2 Z9 2 U1 0 U2 0 PU AMER DIETETIC ASSOC PI CHICAGO PA 216 W JACKSON BLVD #800, CHICAGO, IL 60606-6995 SN 0002-8223 J9 J AM DIET ASSOC JI J. Am. Diet. Assoc. PD DEC PY 1991 VL 91 IS 12 BP 1550 EP 1555 PG 6 WC Nutrition & Dietetics SC Nutrition & Dietetics GA GV640 UT WOS:A1991GV64000010 PM 1960348 ER PT J AU MARCHESE, M GLODOWSKI, KA AF MARCHESE, M GLODOWSKI, KA TI REAL-TIME MICROFOCUS RADIOGRAPHY FOR ELECTRONIC FAILURE ANALYSIS SO MATERIALS EVALUATION LA English DT Article DE ELECTRONICS; FAILURE ANALYSIS; IMAGE PROCESSING; INSPECTION; NONDESTRUCTIVE INSPECTION; RADIOSCOPY; X-RADIOGRAPHY AB This paper is formatted as a case history of several failure-analysis projects where real-time microfocus radiography was employed as an inspection tool. These projects investigated various devices such as printed wiring boards, switches, connectors, and filters. RP MARCHESE, M (reprint author), MAT DIRECTORATE,WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC NON-DESTRUCTIVE TEST PI COLUMBUS PA 1711 ARLINGATE LANE PO BOX 28518, COLUMBUS, OH 43228-0518 SN 0025-5327 J9 MATER EVAL JI Mater. Eval. PD DEC PY 1991 VL 49 IS 12 BP 1481 EP 1485 PG 5 WC Materials Science, Characterization & Testing SC Materials Science GA GU778 UT WOS:A1991GU77800002 ER PT J AU COOPER, TD AF COOPER, TD TI ASNT AND AEROSPACE - WHAT ABOUT THE NEXT 50 YEARS SO MATERIALS EVALUATION LA English DT Article RP COOPER, TD (reprint author), MAT DIRECTORATE,DIV SYST SUPPORT,WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45431, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC NON-DESTRUCTIVE TEST PI COLUMBUS PA 1711 ARLINGATE LANE PO BOX 28518, COLUMBUS, OH 43228-0518 SN 0025-5327 J9 MATER EVAL JI Mater. Eval. PD DEC PY 1991 VL 49 IS 12 BP 1526 EP & PG 0 WC Materials Science, Characterization & Testing SC Materials Science GA GU778 UT WOS:A1991GU77800007 ER PT J AU BOMBARD, AT BARTHOLOMEW, DW AF BOMBARD, AT BARTHOLOMEW, DW TI MOLECULAR ANALYSIS AND CHORIONIC VILLUS SAMPLING (CVS) - OPPORTUNITIES FOR RAPID PRENATAL-DIAGNOSIS IN THE MILITARY SO MILITARY MEDICINE LA English DT Article AB Prior to recent advances in the field of molecular biology, prenatal diagnosis of hemoglobinopathies was accomplished by direct analysis of the gene product(s) in samples obtained by fetoscopy or, more recently, percutaneous umbilical blood sampling. The use of the polymerase chain reaction enables quicker diagnosis than with indirect or cumbersome Southern blot techniques. This case, reporting a couple at risk for fetal sickle cell disease, is a model for rapid prenatal diagnosis and demonstrates the capabilities which exist in the military health care referral system. Within 24 hours of a couple's presentation for consultation and accomplishment of chorionic villus sampling (CVS), preliminary results of both cytogenetic and sickle cell status of an at-risk fetus were determined. Final analysis was accomplished by 48 hours. The combination of early referral, early sampling by CVS, and application of advances in DNA laboratory technologies offers tremendous improvements for care heretofore unavailable as a complete "package" in the military. The implications and limitations for prenatal testing for single gene disorders within the military medical health care system will be discussed. RP BOMBARD, AT (reprint author), USAF,MED CTR,DEPT OBSTET & GYNECOL,KEESLER AFB,MS 39534, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ASSN MILITARY SURG US PI BETHESDA PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 SN 0026-4075 J9 MIL MED JI Milit. Med. PD DEC PY 1991 VL 156 IS 12 BP 678 EP 680 PG 3 WC Medicine, General & Internal SC General & Internal Medicine GA GV758 UT WOS:A1991GV75800018 PM 1780070 ER PT J AU WHITE, GL AF WHITE, GL TI HEALTH PROMOTIONS SO MILITARY MEDICINE LA English DT Editorial Material RP WHITE, GL (reprint author), USAF,403RD MED SQUADRON,WASHINGTON,DC 20330, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ASSN MILITARY SURG US PI BETHESDA PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 SN 0026-4075 J9 MIL MED JI Milit. Med. PD DEC PY 1991 VL 156 IS 12 BP 693 EP 693 PG 1 WC Medicine, General & Internal SC General & Internal Medicine GA GV758 UT WOS:A1991GV75800023 PM 1780075 ER PT J AU KNUTSON, CJ AF KNUTSON, CJ TI WHO SHOULD COMMAND SO MILITARY MEDICINE LA English DT Letter RP KNUTSON, CJ (reprint author), USAF,WASHINGTON,DC 20330, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ASSN MILITARY SURG US PI BETHESDA PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 SN 0026-4075 J9 MIL MED JI Milit. Med. PD DEC PY 1991 VL 156 IS 12 BP A12 EP A12 PG 1 WC Medicine, General & Internal SC General & Internal Medicine GA GV758 UT WOS:A1991GV75800007 ER PT J AU MCGUIRE, SA FISCHBECK, KH AF MCGUIRE, SA FISCHBECK, KH TI AUTOSOMAL RECESSIVE DUCHENNE-LIKE MUSCULAR-DYSTROPHY - MOLECULAR AND HISTOCHEMICAL RESULTS SO MUSCLE & NERVE LA English DT Article DE AUTOSOMAL RECESSIVE MUSCULAR DYSTROPHY; DYSTROPHIN; LIMB-GIRDLE DYSTROPHY; DUCHENNE MUSCULAR DYSTROPHY ID X-CHROMOSOME; FEMALE; INACTIVATION AB An autosomal recessive disorder which mimics Duchenne muscular dystrophy has long been suspected as a cause of muscular dystrophy in karyotypically normal girls and in both boys and girls with consanguineous parents. Analysis of dystrophin now allows confirmation of the existence of this disorder. We report the results of this analysis in a brother and sister who have the typical clinical features of Duchenne muscular dystrophy, but no demonstrable abnormality in dystrophin or its gene. C1 UNIV PENN,MED CTR,DEPT NEUROL,PHILADELPHIA,PA 19104. RP MCGUIRE, SA (reprint author), WILFORD HALL USAF MED CTR,DEPT NEUROL,LACKLAND AFB,TX 78236, USA. NR 14 TC 10 Z9 10 U1 0 U2 0 PU JOHN WILEY & SONS INC PI NEW YORK PA 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0148-639X J9 MUSCLE NERVE JI Muscle Nerve PD DEC PY 1991 VL 14 IS 12 BP 1209 EP 1212 DI 10.1002/mus.880141212 PG 4 WC Clinical Neurology; Neurosciences SC Neurosciences & Neurology GA GU248 UT WOS:A1991GU24800010 PM 1766451 ER PT J AU FIELDING, KH HORNER, JL MAKEKAU, CK AF FIELDING, KH HORNER, JL MAKEKAU, CK TI OPTICAL FINGERPRINT IDENTIFICATION BY BINARY JOINT TRANSFORM CORRELATION SO OPTICAL ENGINEERING LA English DT Article DE PATTERN RECOGNITION; JOINT TRANSFORM CORRELATION; FINGERPRINT IDENTIFICATION AB We describe an optical fingerprint identification system that optically reads a latent fingerprint for correlation using a binary joint transform correlator. The fingerprint is read using the total internal reflection property of a prism. The system was built, tested, and the experimental results are presented. RP USAF, ROME LAB, OPT SIGNAL PROC BRANCH, BEDFORD, MA 01731 USA. NR 10 TC 58 Z9 60 U1 0 U2 4 PU SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98225 USA SN 0091-3286 EI 1560-2303 J9 OPT ENG JI Opt. Eng. PD DEC PY 1991 VL 30 IS 12 BP 1958 EP 1961 DI 10.1117/12.56030 PG 4 WC Optics SC Optics GA GV104 UT WOS:A1991GV10400017 ER PT J AU GONGLEWSKI, JD IDELL, PS VOELZ, DG DAYTON, DC SPIELBUSCH, BK PIERSON, RE AF GONGLEWSKI, JD IDELL, PS VOELZ, DG DAYTON, DC SPIELBUSCH, BK PIERSON, RE TI COHERENT IMAGE SYNTHESIS FROM WAVE-FRONT SENSOR MEASUREMENTS OF A NONIMAGED LASER SPECKLE FIELD - A LABORATORY DEMONSTRATION SO OPTICS LETTERS LA English DT Article ID OPTICS AB We report what are to our knowledge the first coherent images recovered in the laboratory from measurements made with a Shack-Hartmann wave-front sensor of the phase and amplitude of a laser speckle wave front. We discuss the design of our wave-front sensor, which can obtain the phase and amplitude of an optical field with a single intensity measurement, and we point out a particular type of phase jump that cannot be detected by the Shack-Hartmann sensor. We also discuss implementations of this technique that may permit near-diffraction-limited imaging through turbulent media. C1 APPL TECHNOL ASSOCIATES INC,ALBUQUERQUE,NM 87106. RP GONGLEWSKI, JD (reprint author), USAF,PHILLIPS LAB,ADV IMAGING BRANCH,KIRTLAND AFB,NM 87117, USA. NR 17 TC 4 Z9 4 U1 0 U2 1 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0146-9592 J9 OPT LETT JI Opt. Lett. PD DEC 1 PY 1991 VL 16 IS 23 BP 1893 EP 1895 DI 10.1364/OL.16.001893 PG 3 WC Optics SC Optics GA GT347 UT WOS:A1991GT34700029 PM 19784174 ER PT J AU BUTT, WE BRADLEY, DV MAYHEW, RB SCHWARTZ, RS AF BUTT, WE BRADLEY, DV MAYHEW, RB SCHWARTZ, RS TI EVALUATION OF THE SHELF-LIFE OF STERILE INSTRUMENT PACKS SO ORAL SURGERY ORAL MEDICINE ORAL PATHOLOGY ORAL RADIOLOGY AND ENDODONTICS LA English DT Article ID STORAGE AB No published studies have specifically addressed the shelf life of sterile packaging materials commonly used in dentistry. This study examined the effect of time on the sterile integrity: paper envelopes, peel pouches, and nylon sleeves. Seven thousand two hundred sample packs, each containing three glass rods, were prepared and steam sterilized. After sterilization, half the packs (control packs) were immediately opened and the contents were analyzed for bacterial contamination. The other half (test packs) were randomly sorted and stored in dental treatment operatories. At monthly intervals for 12 months, 100 packs of each type were similarly opened and analyzed. The contamination rates between control packs and test packs for both the paper envelopes (0.4% and 0.7%) and the peel pouches (0.2% and 0.2%) were also insignificant. However, a significant difference (p < 0.01) between control and test packs (0.3% and 1.5%) was found for the nylon sleeves. This increase was not time related and was attributed to difficulty in removing the glass rods from the nylon packs in a sterile manner. The most important finding was the absence of a trend toward an increased rate of contamination over time for any pack type. This indicates that when these materials are placed in coveried storage in dental operatories, a 12-month storage period is not detrimental to their sterile integrity. C1 WILFORD HALL USAF MED CTR,DIV LAB SCI,LACKLAND AFB,TX 78236. WILFORD HALL USAF MED CTR,DEPT GEN DENT,LACKLAND AFB,TX 78236. NR 13 TC 8 Z9 8 U1 1 U2 3 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 1079-2104 J9 ORAL SURG ORAL MED O JI Oral Surg. Oral Med. Oral Pathol. Oral Radiol. Endod. PD DEC PY 1991 VL 72 IS 6 BP 650 EP 654 DI 10.1016/0030-4220(91)90004-V PG 5 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA GV813 UT WOS:A1991GV81300004 PM 1812444 ER PT J AU CONSTANTINO, PD FRIEDMAN, CD AF CONSTANTINO, PD FRIEDMAN, CD TI DISTRACTION OSTEOGENESIS - APPLICATIONS FOR MANDIBULAR REGROWTH SO OTOLARYNGOLOGIC CLINICS OF NORTH AMERICA LA English DT Article ID BONE-GRAFTS; SURGERY C1 YALE UNIV,SCH MED,DEPT OTOLARYNGOL,NEW HAVEN,CT 06510. RP CONSTANTINO, PD (reprint author), WILFORD HALL USAF MED CTR,MED CORP,DEPT OTOLARYNGOL HEAD & NECK SURG,SGHSO,LACKLAND AFB,TX 78236, USA. NR 18 TC 13 Z9 13 U1 0 U2 0 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0030-6665 J9 OTOLARYNG CLIN N AM JI Otolaryngol. Clin. N. Am. PD DEC PY 1991 VL 24 IS 6 BP 1433 EP 1443 PG 11 WC Otorhinolaryngology SC Otorhinolaryngology GA GU861 UT WOS:A1991GU86100010 ER PT J AU KOZLOWSKI, G MAARTENSE, I HANSLEY, D OBERLY, CE HO, JC AF KOZLOWSKI, G MAARTENSE, I HANSLEY, D OBERLY, CE HO, JC TI MAGNETIC-PROPERTIES OF MELT-PROCESSED NI-SUBSTITUTED YBCO SO PHYSICA C LA English DT Article; Proceedings Paper CT INTERNATIONAL CONF ON MATERIALS AND MECHANISMS OF SUPERCONDUCTIVITY HIGH TEMPERATURE SUPERCONDUCTORS 3 CY JUL 22-26, 1991 CL KANAZAWA, JAPAN AB A maximum in the magnetization critical current density is observed in melt-processed Ni-substituted YBCO below the Ni-solubility limit. Multi-component granular effects dominate the bulk properties, leading to increased flux pinning. C1 USAF,WRIGHT AERONAUT LABS,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. WICHITA STATE UNIV,DEPT PHYS,WICHITA,KS 67208. RP KOZLOWSKI, G (reprint author), USAF,WRIGHT AERONAUT LABS,AERO PROPULS & POWER DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 4 TC 12 Z9 12 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4534 J9 PHYSICA C JI Physica C PD DEC 1 PY 1991 VL 185 BP 2459 EP 2460 DI 10.1016/0921-4534(91)91354-7 PN 4 PG 2 WC Physics, Applied SC Physics GA GX309 UT WOS:A1991GX30900163 ER PT J AU GORN, MH AF GORN, MH TI A HISTORY OF SCIENCE POLICY IN THE UNITED-STATES, 1940-1985 - STINE,JK SO PUBLIC HISTORIAN LA English DT Book Review RP GORN, MH (reprint author), USAF,SYST COMMAND,OFF HIST,WASHINGTON,DC 20330, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU UNIV CALIF PRESS PI BERKELEY PA JOURNALS DEPT 2120 BERKELEY WAY, BERKELEY, CA 94720 SN 0272-3433 J9 PUBL HISTORIAN JI Public Hist. PD WIN PY 1991 VL 13 IS 1 BP 111 EP 112 PG 2 WC History SC History GA FG517 UT WOS:A1991FG51700030 ER PT J AU RAVICHANDRAN, KS AF RAVICHANDRAN, KS TI EFFECT OF SPECIMEN GEOMETRY ON THE TOUGHNESS OF FIBER REINFORCED COMPOSITES HAVING BRIDGED CRACKS SO SCRIPTA METALLURGICA ET MATERIALIA LA English DT Article ID CERAMIC-MATRIX COMPOSITES; WEIGHT FUNCTION RP RAVICHANDRAN, KS (reprint author), WL,MLLN,MAT DIRECTORATE,WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433, USA. NR 12 TC 2 Z9 2 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0956-716X J9 SCRIPTA METALL MATER JI Scr. Metall. Materialia PD DEC PY 1991 VL 25 IS 12 BP 2645 EP 2650 DI 10.1016/0956-716X(91)90132-K PG 6 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA GU420 UT WOS:A1991GU42000004 ER PT J AU RIZZO, R LAMMER, EJ PARANO, E PAVONE, L ARGYLE, JC AF RIZZO, R LAMMER, EJ PARANO, E PAVONE, L ARGYLE, JC TI LIMB REDUCTION DEFECTS IN HUMANS ASSOCIATED WITH PRENATAL ISOTRETINOIN EXPOSURE SO TERATOLOGY LA English DT Article ID APICAL ECTODERMAL RIDGE; RETINOIC-ACID; MALFORMATIONS; EMBRYOPATHY; ETRETINATE; INVIVO AB Retinoic acid has long been used to induce limb reductions defects in experimental animal studies. No limb malformations, however, have been reported among malformed retinoic acid-exposed human fetuses from case reports or epidemiologic studies. We report a child and a fetus with limb reduction malformations following maternal use of isotretinoin (13-cis-retinoic acid) during the first trimester of pregnancy. The child had a unilaterally absent clavicle and nearly absent scapula, with a short humerus and short, synostotic forearm bones. He also had ventriculomegaly and developmental delay, minor dysmorphic facial features, and a short sternum with a sterno-umbilical raphe. The fetus had a unilaterally absent thumb with normal proximal bony structures. Other findings included hydrocephalus, craniofacial anomalies, thymic agenesis, supracristal ventricular septal defect, single umbilical artery, anal and vaginal atresia, and urethral agenesis with dysplastic, multicystic kidneys. Although the limb malformations were quite dissimilar, a number of anomalies that are frequently found among isotretinoin-exposed fetuses/infants were present in both cases. This increases the probability that retinoic acid caused these limb defects, but a causal association cannot be conclusively drawn on the basis of these two retrospective case reports. C1 WILFORD HALL USAF MED CTR,DEPT PATHOL,LACKLAND AFB,TX 78236. CALIF BIRTH DEFECTS MONITORING PROGRAM,EMERYVILLE,CA 94608. RP RIZZO, R (reprint author), UNIV CATANIA,PEDIAT CLIN,I-95125 CATANIA,ITALY. OI Rizzo, Renata/0000-0002-3997-1328 NR 26 TC 39 Z9 39 U1 2 U2 5 PU WILEY-LISS PI NEW YORK PA DIV JOHN WILEY & SONS INC 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0040-3709 J9 TERATOLOGY JI Teratology PD DEC PY 1991 VL 44 IS 6 BP 599 EP 604 DI 10.1002/tera.1420440602 PG 6 WC Developmental Biology; Toxicology SC Developmental Biology; Toxicology GA GX841 UT WOS:A1991GX84100001 PM 1805430 ER PT J AU DELRASO, NJ AUTEN, KL HIGMAN, HC LEAHY, HF AF DELRASO, NJ AUTEN, KL HIGMAN, HC LEAHY, HF TI EVIDENCE OF HEPATIC CONVERSION OF C-6 AND C-8 CHLOROTRIFLUOROETHYLENE (CTFE) OLIGOMERS TO THEIR CORRESPONDING CTFE ACIDS SO TOXICOLOGY LETTERS LA English DT Article DE LIVER; 3.1 OIL; CHLOROTRIFLUOROETHYLENE OLIGOMERS; HALOGENATED FATTY ACIDS ID DECANOIC ACID AB The toxicity of polychlorotrifluoroethylene oil (3.1 oil) hydraulic fluid is believed to be related to the conversion of neutral chlorotrifluoroethylene (CTFE) oligomers to their corresponding halogenated fatty acids. Male Fischer-344 rats were orally gavaged (1.25 g/kg/d) with two batch formulated 3.1 oils (3.1 oil-C6 and 3.1 oil-C6:C-8) and C6 CTFE (trimer) and C-8 CTFE (tetramer) oligomers, respectively. All rats exposed to test compounds for 7 days demonstrated significant 2-fold increases in liver weight over controls. After 24-h and 7-day dosings, the amount of tetramer acid formed in the liver was 2x and 11x the amount of trimer acid formed, respectively. In addition to the formation of tetramer acid, rats dosed with tetramer also indicated comparable amounts of trimer acid. These data indicate that toxicity induced by the 3.1 oil may be due to the retention of the tetramer and the resulting persistent high concentrations of halogenated fatty acids. C1 MANTECH ENVIRONM TECHNOL INC,DAYTON,OH. RP DELRASO, NJ (reprint author), USAF,ARMSTRONG LAB,DIV TOX HAZARDS,DETACHMENT 1,WRIGHT PATTERSON AFB,OH 45433, USA. NR 6 TC 4 Z9 4 U1 0 U2 0 PU ELSEVIER SCI IRELAND LTD PI CLARE PA CUSTOMER RELATIONS MANAGER, BAY 15, SHANNON INDUSTRIAL ESTATE CO, CLARE, IRELAND SN 0378-4274 J9 TOXICOL LETT JI Toxicol. Lett. PD DEC PY 1991 VL 59 IS 1-3 BP 41 EP 49 DI 10.1016/0378-4274(91)90053-9 PG 9 WC Toxicology SC Toxicology GA GW207 UT WOS:A1991GW20700003 PM 1755033 ER PT J AU HANSEN, LM AF HANSEN, LM TI VERIFYING CONVENTIONAL FORCE REDUCTIONS SO WASHINGTON QUARTERLY LA English DT Article RP HANSEN, LM (reprint author), USAF ACAD,NATL SECUR & DEF STUDIES,COLORADO SPRINGS,CO 80840, USA. NR 7 TC 0 Z9 0 U1 0 U2 0 PU MIT PRESS PI CAMBRIDGE PA 55 HAYWARD ST JOURNALS DEPT, CAMBRIDGE, MA 02142 SN 0163-660X J9 WASH QUART JI Wash. Q. PD WIN PY 1991 VL 14 IS 1 BP 133 EP 147 PG 15 WC International Relations; Law SC International Relations; Government & Law GA EJ992 UT WOS:A1991EJ99200009 ER PT J AU CARLSON, DW GREEN, RP AF CARLSON, DW GREEN, RP TI THE CAREER IMPACT OF KERATOCONUS ON AIR-FORCE AVIATORS SO AMERICAN JOURNAL OF OPHTHALMOLOGY LA English DT Article AB Keratoconus causes progressive blurring and distortion of vision, which threatens the career of a military aviator. To assess the impact of keratoconus on flying careers, we reviewed the records of all aviators with keratoconus who have been examined at the United States Air Force School of Aerospace Medicine over the past 23 years. Of the 22 aviators observed for more than three years, 18 were still qualified to fly at their most recent examination. The remaining four aviators were permanently removed from flying duties because of visual dysfunction caused by keratoconus. Of the 22 aviators examined, 15 required hard contact lenses for optimal correction of vision. No aircraft accidents or incidents, attributable to visual factors, were documented. We concluded that the majority of aviators with keratoconus are able to continue their flying careers safely with the aid of spectacles or contact lenses. C1 USAF,AOCO,OPHTHALMOL BRANCH,ARMSTRONG LAB,BROOKS AFB,TX 78235. NR 4 TC 3 Z9 3 U1 1 U2 2 PU OPHTHALMIC PUBL CO PI CHICAGO PA 77 WEST WACKER DR, STE 660, CHICAGO, IL 60601 SN 0002-9394 J9 AM J OPHTHALMOL JI Am. J. Ophthalmol. PD NOV 15 PY 1991 VL 112 IS 5 BP 557 EP 561 PG 5 WC Ophthalmology SC Ophthalmology GA GN958 UT WOS:A1991GN95800012 PM 1951594 ER PT J AU DRUMMOND, JC BRANN, CA PERKINS, DE WOLFE, DE AF DRUMMOND, JC BRANN, CA PERKINS, DE WOLFE, DE TI A COMPARISON OF MEDIAN FREQUENCY, SPECTRAL EDGE FREQUENCY, A FREQUENCY BAND POWER RATIO, TOTAL POWER, AND DOMINANCE SHIFT IN THE DETERMINATION OF DEPTH OF ANESTHESIA SO ACTA ANAESTHESIOLOGICA SCANDINAVICA LA English DT Article DE ANESTHESIA, DEPTH; ELECTROENCEPHALOGRAM; ELECTROENCEPHALOGRAM (EEG), PROCESSED ID EEG; ISOFLURANE; CORRELATE; FENTANYL AB Five numerical descriptors were derived from the electroencephalogram (EEG), recorded, and processed (Tracor Nomad(R)) during emergence from isoflurane-nitrous oxide anesthesia. The five descriptors (median frequency, spectral edge frequency-90%, total power, a frequency band power ratio, and the ratio of frontal to occipital power) were compared for their ability to predict imminent arousal. Arousal was defined as spontaneous movement, coughing or eye opening. All of the descriptors except the frontal-occipital power ratio underwent significant (P < 0.05) changes between the initial recordings made intraoperatively during surgical stimulus under anesthesia and later recordings in the 40 s preceding arousal. A post hoc analysis was performed to identify the threshold value for each parameter that best served to predict imminent arousal. For median frequency, spectral edge frequency-90%, total power, and the frequency band power ratio, thresholds that predicted imminent arousal with sensitivities of 90% and specificities of 82-90% could be identified. The data indicate that, even in the favorable circumstances of the present study (uniform anesthetic technique, post hoc identification of thresholds), none of several previously popularized EEG descriptors (median frequency, spectral edge frequency-90%, total power, a frequency band power ratio) can serve as a completely reliable sole predictor of imminent arousal. As presently derived, these EEG descriptors at best provide trend information to be used in concert with other clinical signs of depth of anesthesia. C1 VET ADM MED CTR,DEPT ANESTHESIA,SAN DIEGO,CA 92161. WILFORD HALL USAF MED CTR,DEPT ANESTHESIA,SAN ANTONIO,TX. USN HOSP,DEPT ANESTHESIA,SAN DIEGO,CA 92134. USN HOSP,DEPT ANESTHESIA,PENSACOLA,FL. RP DRUMMOND, JC (reprint author), UNIV CALIF SAN DIEGO,DEPT ANESTHESIA,LA JOLLA,CA 92093, USA. NR 11 TC 102 Z9 104 U1 0 U2 4 PU MUNKSGAARD INT PUBL LTD PI COPENHAGEN PA 35 NORRE SOGADE, PO BOX 2148, DK-1016 COPENHAGEN, DENMARK SN 0001-5172 J9 ACTA ANAESTH SCAND JI Acta Anaesthesiol. Scand. PD NOV PY 1991 VL 35 IS 8 BP 693 EP 699 PG 7 WC Anesthesiology SC Anesthesiology GA GT915 UT WOS:A1991GT91500002 PM 1763588 ER PT J AU STRATTON, RF BLUESTONE, DL AF STRATTON, RF BLUESTONE, DL TI OTO-PALATAL-DIGITAL SYNDROME TYPE-II WITH X-LINKED CEREBELLAR HYPOPLASIA HYDROCEPHALUS SO AMERICAN JOURNAL OF MEDICAL GENETICS LA English DT Note DE OTO-PALATAL-DIGITAL SYNDROME; TYPE-II; HYDROCEPHALUS; CEREBELLAR HYPOPLASIA; X-LINKED ID CONGENITAL HYDROCEPHALUS; AQUEDUCTAL STENOSIS; PRENATAL-DIAGNOSIS; FAMILIES; BROTHERS AB We describe an infant with clinically apparent oto-palatal-digital syndrome Type II (OPD II), who, in addition, also has hydrocephalus and cerebellar hypoplasia. This second X-linked disorder has not been reported previously to occur in association with OPD II. This patient had 2 maternal uncles who died neonatally with congenital hydrocephalus and digital abnormalities consistent with OPD II. We suggest that these 2 entities may be located near one another on the X chromosome, and that both loci are affected in this family. C1 WILFORD HALL USAF MED CTR,DEPT PEDIAT,LACKLAND AFB,TX 78236. RP STRATTON, RF (reprint author), S TEXAS GENET CTR,7922 EWING HALLSELL DR,SUITE 410,SAN ANTONIO,TX 78229, USA. NR 18 TC 26 Z9 26 U1 0 U2 0 PU WILEY-LISS PI NEW YORK PA DIV JOHN WILEY & SONS INC 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0148-7299 J9 AM J MED GENET JI Am. J. Med. Genet. PD NOV 1 PY 1991 VL 41 IS 2 BP 169 EP 172 DI 10.1002/ajmg.1320410206 PG 4 WC Genetics & Heredity SC Genetics & Heredity GA GM676 UT WOS:A1991GM67600005 PM 1785627 ER PT J AU ARRIAGA, MA BRACKMANN, DE AF ARRIAGA, MA BRACKMANN, DE TI DIFFERENTIAL-DIAGNOSIS OF PRIMARY PETROUS APEX LESIONS SO AMERICAN JOURNAL OF OTOLOGY LA English DT Article ID CHOLESTEROL GRANULOMA; TEMPORAL BONE; PNEUMATIZATION; CT AB Accurate preoperative diagnosis of petrous apex lesions is critical because the surgical approaches used for this region are different depending upon the specific disease process involved. While CT and MRI have each improved the accuracy of preoperative diagnosis of petrous apex pathology, these imaging studies are most helpful when used in conjunction with one another. When systematically applied, the combination of CT with contrast and MRI (with and without gadolinium) permits accurate differential diagnosis of primary petrous apex lesions. This review presents the imaging approach employed at the House Ear Clinic for the differential diagnosis of primary lesions of the petrous apex. C1 UNIV SO CALIF,SCH MED,HOUSE EAR CLIN,LOS ANGELES,CA 90033. WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. NR 12 TC 40 Z9 41 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 0192-9763 J9 AM J OTOL JI Am. J. Otol. PD NOV PY 1991 VL 12 IS 6 BP 470 EP 474 PG 5 WC Otorhinolaryngology SC Otorhinolaryngology GA GQ423 UT WOS:A1991GQ42300018 PM 1805645 ER PT J AU HAIGLER, BE SPAIN, JC AF HAIGLER, BE SPAIN, JC TI BIOTRANSFORMATION OF NITROBENZENE BY BACTERIA CONTAINING TOLUENE DEGRADATIVE PATHWAYS SO APPLIED AND ENVIRONMENTAL MICROBIOLOGY LA English DT Article ID PSEUDOMONAS-PUTIDA F1; PLANT WASTE-WATER; MICROBIAL TRANSFORMATION; NITROAROMATIC COMPOUNDS; BIODEGRADATION; PHENOL AB Nonpolar nitroaromatic compounds have been considered resistant to attack by oxygenases because of the electron withdrawing properties of the nitro group. We have investigated the ability of seven bacterial strains containing toluene degradative pathways to oxidize nitrobenzene. Cultures were induced with toluene vapor prior to incubation with nitrobenzene, and products were identified by high-performance liquid chromatography and gas chromatography-mass spectrometry. Pseudomonas cepacia G4 and a strain of Pseudomonas harboring the TOL plasmid (pTN2) did not transform nitrobenzene. Cells of Pseudomonas putida F1 and Pseudomonas sp. strain JS150 converted nitrobenzene to 3-nitrocatechol. Transformation of nitrobenzene in the presence of O-18(2) indicated that the reaction in JS150 involved the incorporation of both atoms of oxygen in the 3-nitrocatechol, which suggests a dioxygenase mechanism. P. putida 39/D, a mutant strain of P. putida F1, converted nitrobenzene to a compound tentatively identified as cis-1,2-dihydroxy-3-nitrocyclohexa-3,5-diene. This compound was rapidly converted to 3-nitrocatechol by cells of strain JS150. Cultures of Pseudomonas mendocina KR-1 converted nitrobenzene to a mixture of 3- and 4-nitrophenol (10 and 63%, respectively). Pseudomonas pickettii PKO1 converted nitrobenzene to 3- and 4-nitrocatechol via 3- and 4-nitrophenol. The nitrocatechols were slowly degraded to unidentified metabolites. Nitrobenzene did not serve as an inducer for the enzymes that catalyzed its oxidation. These results indicate that the nitrobenzene ring is subject to initial attack by both mono- and dioxygenase enzymes. C1 USAF,CIVIL ENGN SUPPORT AGCY,TYNDALL AFB,FL 32403. NR 39 TC 84 Z9 105 U1 0 U2 2 PU AMER SOC MICROBIOLOGY PI WASHINGTON PA 1325 MASSACHUSETTS AVENUE, NW, WASHINGTON, DC 20005-4171 SN 0099-2240 J9 APPL ENVIRON MICROB JI Appl. Environ. Microbiol. PD NOV PY 1991 VL 57 IS 11 BP 3156 EP 3162 PG 7 WC Biotechnology & Applied Microbiology; Microbiology SC Biotechnology & Applied Microbiology; Microbiology GA GN265 UT WOS:A1991GN26500015 PM 1781679 ER PT J AU SPANGGORD, RJ SPAIN, JC NISHINO, SF MORTELMANS, KE AF SPANGGORD, RJ SPAIN, JC NISHINO, SF MORTELMANS, KE TI BIODEGRADATION OF 2,4-DINITROTOLUENE BY A PSEUDOMONAS SP SO APPLIED AND ENVIRONMENTAL MICROBIOLOGY LA English DT Article ID MICROBIAL TRANSFORMATION; NITROAROMATIC COMPOUNDS; 2,4,6-TRINITROTOLUENE; BIOTRANSFORMATION; IDENTIFICATION; DEGRADATION; NITROPHENOL; EFFLUENT; PUTIDA; ACID AB Previous studies of the biodegradation of nonpolar nitroaromatic compounds have suggested that microorganisms can reduce the nitro groups but cannot cleave the aromatic ring. We report here the initial steps in a pathway for complete biodegradation of 2,4-dinitrotoluene (DNT) by a Pseudomonas sp. isolated from a four-member consortium enriched with DNT. The Pseudomonas sp. degraded DNT as the sole source of carbon and energy under aerobic conditions with stoichiometric release of nitrite. During induction of the enzymes required for growth on DNT, 4-methyl-5-nitrocatechol (MNC) accumulated transiently in the culture fluid when cells grown on acetate were transferred to medium containing DNT as the sole carbon and energy source. Conversion of DNT to MNC in the presence of 18O2 revealed the simultaneous incorporation of two atoms of molecular oxygen, which demonstrated that the reaction was catalyzed by a dioxygenase. Fully induced cells degraded MNC rapidly with stoichiometric release of nitrite. The The results indicate an initial dioxygenase attack at the 4,5 positron of DNT with the concomitant release of nitrite. Subsequent reactions lead to complete biodegradation and removal of the second nitro group as nitrite. C1 SRI INT,MENLO PK,CA 94025. USAF,CTR ENGN & SERV,TYNDALL AFB,FL 32403. NR 31 TC 206 Z9 215 U1 1 U2 12 PU AMER SOC MICROBIOLOGY PI WASHINGTON PA 1325 MASSACHUSETTS AVENUE, NW, WASHINGTON, DC 20005-4171 SN 0099-2240 J9 APPL ENVIRON MICROB JI Appl. Environ. Microbiol. PD NOV PY 1991 VL 57 IS 11 BP 3200 EP 3205 PG 6 WC Biotechnology & Applied Microbiology; Microbiology SC Biotechnology & Applied Microbiology; Microbiology GA GN265 UT WOS:A1991GN26500022 PM 1781682 ER PT J AU MAPES, PB AF MAPES, PB TI THE ADEQUACY OF CORRECTIVE LENSES WORN BY UNITED-STATES AIR-FORCE AVIATORS FOR ANNUAL FLIGHT MEDICAL EXAMINATIONS SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article AB Aviators presenting for annual flight medical examinations at the 379th Strategic Hospital at Wurtsmith Air Force Base were studied to determine the prevalence of substandard visual acuity. The prevalence of the use of outdated (superseded) corrective lenses was also studied. We conducted 342 examinations on different aviators and 92 (26.9%) of these aviators were found to require corrective lenses. There were 23 (6.7%) aviators who were found to have inadequate visual acuity and 14 of these (4.1%) were found to be wearing superseded lenses. The visual screening method prescribed by the United States Air Force did not identify four of the aviators who wore superseded lenses. Three aviators were found to be wearing lenses obtained from civil sources. The study suggests that improvements could be made in U.S. Air Force visual screening and care. C1 379TH STRATEG HOSP,WURTSMITH AFB,MI. NR 1 TC 2 Z9 2 U1 0 U2 0 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD NOV PY 1991 VL 62 IS 11 BP 1073 EP 1077 PG 5 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA GM888 UT WOS:A1991GM88800011 PM 1741722 ER PT J AU HARTMAN, BO SECRIST, GE AF HARTMAN, BO SECRIST, GE TI SITUATIONAL AWARENESS IS MORE THAN EXCEPTIONAL VISION SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Note ID ATTENTION AB Superior situational awareness, an extraordinary awareness of the total flight environment and aerial combat situation, is a significant contributor to success in aerial engagement. Review of over 1,000 published sources has led to the formulation of situational awareness as being principally in the cognitive domain. Superior awareness involves exceptional sensitivity to performance-critical cues in the operational environment, an exceptional capacity to anticipate changes in system states and operational conditions, and the ability to act on those changes in a proactive mode. Three important constructs are described: 1) automatic information processing; 2) near-threshold processing; and 3) skilled memory. In combination, they constitute a pilot attribute which uniquely facilitates the full armamentarium of skills and abilities of the superior tactical pilot. C1 HUMAN PERFORMANCE RES ASSOCIATES,SAN ANTONIO,TX. RP HARTMAN, BO (reprint author), USAF,DIV CLIN SCI,BROOKS AFB,TX 78235, USA. NR 14 TC 12 Z9 13 U1 1 U2 1 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD NOV PY 1991 VL 62 IS 11 BP 1084 EP 1089 PG 6 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA GM888 UT WOS:A1991GM88800014 PM 1741725 ER PT J AU NIELSEN, JN AF NIELSEN, JN TI A COMPARISON OF THE ROUTINE MEDICAL-EXAMINATION OF PILOTS IN 12 AIR FORCES SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Note ID ADULT HEALTH MAINTENANCE; PREVENTION AB All air forces use routine medical examination to ensure the health of their Pilots and flying safety. I compared pilot physicals in 12 air forces, and reviewed literature dealing mainly with routine medical examination of asymptomatic individuals. The discussion considers what should be done during the routine Pilot examination to ensure flying safety, health and mission completion. General recommendations are given on ways to keep cost and effort within limits without failing to achieve the objective. Methods to achieve this include differentiating the intervals between examinations in different age groups and inclusion of procedures only beyond a certain age. Caution is advised when considering the inclusion of new procedures, and attention should be paid to whether such a test can be expected to produce unacceptable numbers of false positive results. C1 USAF,SCH AEROSP MED,BROOKS AFB,TX 78235. NR 21 TC 10 Z9 11 U1 0 U2 0 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD NOV PY 1991 VL 62 IS 11 BP 1090 EP 1095 PG 6 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA GM888 UT WOS:A1991GM88800015 PM 1741726 ER PT J AU FARR, WD LAM, DM AF FARR, WD LAM, DM TI GENERAL ARMSTRONG MONUMENTS SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Note AB During his term as surgeon general, Maj. Gen. Harry G. Armstrong was interested in the French monument commemorating the balloon flight of John Jeffries, the first American aviator, and Jean Pierre Blanchard. Maj. Gen. Armstrong proposed to visit the monument, located in a French forest, and have it renovated with appropriate multi-national ceremonies. The monument is at the landing site of the first flight across the English Channel. The authors discovered the former and current condition of the monument in Guines, France and compare that monument, of interest to Maj. Gen. Armstrong, to a new monument named for him, the newly enlarged U.S.A.F. Armstrong Laboratory. C1 US EUROPEAN COMMAND,STUTTGART,GERMANY. RP FARR, WD (reprint author), USAF,EDK,BROOKS AFB,TX 78235, USA. NR 4 TC 0 Z9 0 U1 0 U2 0 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD NOV PY 1991 VL 62 IS 11 BP 1103 EP 1106 PG 4 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA GM888 UT WOS:A1991GM88800019 PM 1741729 ER PT J AU PLOTNICK, EK BROWN, GR AF PLOTNICK, EK BROWN, GR TI INTRAVENOUS HALOPERIDOL TREATMENT OF SEVERELY REGRESSED, NONVIOLENT PSYCHIATRIC-INPATIENTS SO GENERAL HOSPITAL PSYCHIATRY LA English DT Article; Proceedings Paper CT 1990 ANNUAL MEETING OF THE TEXAS SOC OF PSYCHIATRIC PHYSICIANS CY 1990 CL HOUSTON, TX SP TEXAS SOC PSYCHIAT PHYSICIANS ID NEUROLEPTIC MALIGNANT SYNDROME AB The use of intravenous haloperidol in five severely regressed, nonviolent, psychiatric inpatients with psychotic disorders is described. Unlike previous reports in the consultation psychiatry literature, this treatment was not instituted to control combative behavior in the medically ill. All patients had intravenous access in place for hydration. Four of five patients were discharged in complete remission of psychotic symptoms after brief hospitalizations. The indications for use, dosages, and general absence of side effects are described. Intravenous haloperidol is a viable option for treating severely ill psychiatric inpatients with psychotic disorders. C1 WILFORD HALL USAF MED CTR,DEPT PSYCHIAT,SAN ANTONIO,TX. NR 26 TC 1 Z9 1 U1 0 U2 0 PU ELSEVIER SCIENCE INC PI NEW YORK PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 SN 0163-8343 J9 GEN HOSP PSYCHIAT JI Gen. Hosp. Psych. PD NOV PY 1991 VL 13 IS 6 BP 385 EP 390 DI 10.1016/0163-8343(91)90106-7 PG 6 WC Psychiatry SC Psychiatry GA GQ996 UT WOS:A1991GQ99600054 PM 1765255 ER PT J AU KNIPP, DJ RICHMOND, AD CROOKER, NU AF KNIPP, DJ RICHMOND, AD CROOKER, NU TI IONOSPHERIC CONVECTION RESPONSE TO CHANGING IMF DIRECTION - REPLY SO GEOPHYSICAL RESEARCH LETTERS LA English DT Note C1 NATL CTR ATMOSPHER RES,HIGH ALTITUDE OBSERV,BOULDER,CO 80307. SPACE SCI DIV,GEOPHYS LAB,BEDFORD,MA 01731. RP KNIPP, DJ (reprint author), USAF ACAD,DEPT PHYS,COLORADO SPRINGS,CO 80840, USA. NR 5 TC 1 Z9 1 U1 0 U2 0 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0094-8276 J9 GEOPHYS RES LETT JI Geophys. Res. Lett. PD NOV PY 1991 VL 18 IS 11 BP 2175 EP 2176 DI 10.1029/91GL02546 PG 2 WC Geosciences, Multidisciplinary SC Geology GA GP755 UT WOS:A1991GP75500063 ER PT J AU MACINTYRE, WG STAUFFER, TB ANTWORTH, CP AF MACINTYRE, WG STAUFFER, TB ANTWORTH, CP TI A COMPARISON OF SORPTION COEFFICIENTS DETERMINED BY BATCH, COLUMN, AND BOX METHODS ON A LOW ORGANIC-CARBON AQUIFER MATERIAL SO GROUND WATER LA English DT Article ID NATURAL GRADIENT EXPERIMENT; SOLUTE TRANSPORT; SAND AQUIFER; ADSORPTION AB Results of three independent experimental methods for determination of sorption coefficients were compared on sieved aquifer material samples from Columbus AFB, Columbus, Mississippi. These aquifer materials contained < 0.1% organic carbon, and sorption coefficients for naphthalene ranged from 0.06 to 0.20 l/kg. There was low correlation between organic carbon contents and sorption coefficients. Good agreement was found among sorption coefficients measured by batch, dynamic column, and dynamic box methods. Similarity of the coefficients was attributed to measured fast sorption kinetics and to linearity of isotherms observed for naphthalene sorption on Columbus aquifer material. Results indicate that channeling, wall and end effects, and particle loss were insignificant in the dynamic systems. Since laboratory sorption coefficient measurements were found impractical on whole sand-gravel aquifer samples, an equation is proposed to convert laboratory measured sorption coefficients on the separated sand (< 2 mm) fraction to sorption coefficients on whole sand-gravel aquifer materials. C1 USAF HEADQUARTERS,CTR ENGN & SERV,SUBSURFACE CHEM PROC GRP,TYNDALL AFB,FL 32403. RP MACINTYRE, WG (reprint author), COLL WILLIAM & MARY,SCH MARINE SCI,GLOUCESTER POINT,VA 23062, USA. NR 17 TC 51 Z9 52 U1 3 U2 6 PU GROUND WATER PUBLISHING CO PI COLUMBUS PA 2600 GROUND WATER WAY, COLUMBUS, OH 43219 SN 0017-467X J9 GROUND WATER JI Ground Water PD NOV-DEC PY 1991 VL 29 IS 6 BP 908 EP 913 PG 6 WC Geosciences, Multidisciplinary; Water Resources SC Geology; Water Resources GA GN146 UT WOS:A1991GN14600012 ER PT J AU BOURGEOIS, JA DREXLER, KG HALL, MJ AF BOURGEOIS, JA DREXLER, KG HALL, MJ TI HYPERSALIVATION AND CLOZAPINE SO HOSPITAL AND COMMUNITY PSYCHIATRY LA English DT Letter RP BOURGEOIS, JA (reprint author), USAF,WRIGHT PATTERSON AFB,WRIGHT PATTERSON AFB,OH 45433, USA. NR 1 TC 15 Z9 16 U1 1 U2 2 PU AMER PSYCHIATRIC ASSOCIATION PI WASHINGTON PA 1400 K ST NW, WASHINGTON, DC 20005 SN 0022-1597 J9 HOSP COMMUNITY PSYCH PD NOV PY 1991 VL 42 IS 11 BP 1174 EP 1174 PG 1 WC Public, Environmental & Occupational Health; Psychiatry SC Public, Environmental & Occupational Health; Psychiatry GA GM535 UT WOS:A1991GM53500024 PM 1743654 ER PT J AU GLESSNER, JW MCAULIFFE, MJ SMITH, BD FLOYD, KB AF GLESSNER, JW MCAULIFFE, MJ SMITH, BD FLOYD, KB TI LASING OF ARF WITH A MICROSECOND ELECTRON-BEAM SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID PERFORMANCE; MIXTURE AB ArF(B-X) laser emission has been observed under long pulse electron-beam excitation at relatively low pump rate. ArF lasing only occurred with Ne buffered gas mixtures. Optimum performance of 1.93 J/l at an intrinsic efficiency of 1.35% occurred with an Ar/F2 mixture of 1/0.075% using a Ne buffer to 4.0 amagats. Total energy of 290 mJ in a 2-cm2 beam with a 1.0-mu-s full width at half maximum pulse width was recorded. C1 PHILLIPS LAB,KIRTLAND AFB,NM. RP GLESSNER, JW (reprint author), USAF ACAD,DEPT PHYS,COLORADO SPRINGS,CO 80840, USA. NR 15 TC 1 Z9 1 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD NOV 1 PY 1991 VL 70 IS 9 BP 4694 EP 4696 DI 10.1063/1.349061 PG 3 WC Physics, Applied SC Physics GA GN971 UT WOS:A1991GN97100005 ER PT J AU STEWART, JJP COOLIDGE, MB AF STEWART, JJP COOLIDGE, MB TI SEMIEMPIRICAL VIBRATIONAL AND ELECTRONIC-STRUCTURES OF C-60 AND C-70 SO JOURNAL OF COMPUTATIONAL CHEMISTRY LA English DT Article ID CARBON CLUSTERS; BUCKMINSTERFULLERENE; PARAMETERS; SPECTRA; STATES AB The electronic and vibrational structures of C60 and C70 have been calculated at the PM3 semiempirical level. C60 has a partially delocalized structure, while C70 has both a localized set and a delocalized set of MOs. As with AM1 and MNDO, PM3 predicts the heat of formation of C70 to be greater than that of C60, and that C70 is the thermodynamically more stable species. Calculation of the normal modes was accelerated over 40 times by limited use of symmetry theory. RP STEWART, JJP (reprint author), USAF ACAD, FRANK J SEILER RES LAB, COLORADO SPRINGS, CO 80840 USA. NR 20 TC 29 Z9 29 U1 1 U2 1 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 0192-8651 J9 J COMPUT CHEM JI J. Comput. Chem. PD NOV PY 1991 VL 12 IS 9 BP 1157 EP 1162 DI 10.1002/jcc.540120915 PG 6 WC Chemistry, Multidisciplinary SC Chemistry GA GN724 UT WOS:A1991GN72400014 ER PT J AU LAI, ST AF LAI, ST TI THEORY AND OBSERVATION OF TRIPLE-ROOT JUMP IN SPACECRAFT CHARGING SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article ID SURFACES; ORBIT; ELECTRONS; PHOTOELECTRONS; ENVIRONMENT; POTENTIALS; CURRENTS; BARRIER; ATS-6 AB Sudden onsets of high-voltage differential charging on spacecraft in an ambient environment may affect operations and the survival of on-board electronics. Triple-root jumps may be very sudden. We discuss two aspects, one theoretical and one observational. By using current balance, the theoretical parametric domain in which triple-root jumps may occur for a surface material in a double Maxwellian electron environment has been calculated. The relation between the domain and the "critical" or "threshold" temperature for a material is revealed. We present an example of the prediction of the occurrence of a triple-root spacecraft potential jump in a time-varying space environment. RP LAI, ST (reprint author), USAF,PHILLIPS LAB AFSC,BEDFORD,MA 01731, USA. NR 48 TC 16 Z9 16 U1 0 U2 3 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES JI J. Geophys. Res-Space Phys. PD NOV 1 PY 1991 VL 96 IS A11 BP 19269 EP 19281 DI 10.1029/91JA01653 PG 13 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA GM857 UT WOS:A1991GM85700001 ER PT J AU FRASER, ME GREEN, BD ONEIL, RR AF FRASER, ME GREEN, BD ONEIL, RR TI INFRARED-EMISSION FROM THE ELECTRON-IRRADIATED UPPER-ATMOSPHERE PRODUCED BY THE EXCEDE - SPECTRAL EXPERIMENT SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Note ID RESOLUTION FOURIER SPECTROMETRY; ARTIFICIAL AURORAL EXPERIMENT; VIBRATIONAL-RELAXATION; EXCITATION; N-14(2); SYSTEM; TRANSITION; NITROGEN; N-15(2); STATES AB This paper presents the results and interpretation of infrared data obtained by the Excede:Spectral auroral simulation experiment. We have analyzed 2- to 7-mu-m data from the two circular variable filter spectrometers. The dominant N2 electronic transition system identified in the data across this region is the N2(W3-DELTA-u-nu less-than-or-equal-to 5 --> B3-PI-g, nu less-than-or-equal-to 3) band system which is observed at all altitudes. Nitric oxide fundamental emission is observed in the 5- to 7-mu-m region. The determined NO vibrational distribution can be attributed to the reaction N(2D) + O2. C1 USAF,PHILLIPS LAB,PL OLAA OP,GEOPHYS DIRECTORATE,DIV OPT ENVIRONM,BEDFORD,MA 01731. RP FRASER, ME (reprint author), PHYS SCI INC,20 NEW ENGLAND BUSINESS CTR,ANDOVER,MA 01810, USA. NR 35 TC 3 Z9 3 U1 0 U2 0 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES JI J. Geophys. Res-Space Phys. PD NOV 1 PY 1991 VL 96 IS A11 BP 19491 EP 19497 DI 10.1029/91JA01269 PG 7 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA GM857 UT WOS:A1991GM85700020 ER PT J AU WEBB, SG TURCOTTE, JS AF WEBB, SG TURCOTTE, JS TI EXPERIMENTAL-ANALYSIS OF A PASSIVELY TUNED ACTUATOR ON A LOW-ORDER STRUCTURE SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS LA English DT Article AB This paper presents results of a study of the interaction between a passively tuned reaction mass actuator and a low-order structure. The actuator was passively tuned to the structure's first resonant frequency, and the uncontrolled and passively damped structural responses were compared. While introducing a new mode in the system, (he actuator significantly reduced the peak amplitude ratios of the first two structural modes. The peak amplitude ratios of the structure's higher modes were reduced as well. A sensitivity analysis of the actuator's tuning showed that the passively damped system's resonant modes were altered if the actuator was not tuned to the optimum frequency and damping ratio. Finally, the actuator reduced the magnitude of the structural vibrations, not only where the actuator was attached to the structure, but at all points on the structure. RP WEBB, SG (reprint author), USAF ACAD,COLORADO SPRINGS,CO 80840, USA. NR 10 TC 0 Z9 0 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0731-5090 J9 J GUID CONTROL DYNAM JI J. Guid. Control Dyn. PD NOV-DEC PY 1991 VL 14 IS 6 BP 1110 EP 1114 DI 10.2514/3.20764 PG 5 WC Engineering, Aerospace; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA GW566 UT WOS:A1991GW56600003 ER PT J AU WEBB, SG CALICO, RA WIESEL, WE AF WEBB, SG CALICO, RA WIESEL, WE TI TIME-PERIODIC CONTROL OF A MULTIBLADE HELICOPTER SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS LA English DT Article ID AEROMECHANICAL STABILITY AB The equations of motion for a rigid helicopter containing four blades free to flap and lag are Control techniques are developed which stabilize the entire system for a variety of flight conditions. A modal control technique, based on Floquet theory, is used to eliminate multiple-blade instabilities by controlling pairs of unstable roots at a specific design point. Another modal controller is designed for the resulting new system which shifts a second pair of unstable roots to desired locations. This process is repeated until all instabilities are eliminated. Numerical inaccuracies, however, limit the number of possible repetitions of this procedure. C1 USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433. RP WEBB, SG (reprint author), USAF ACAD,COLORADO SPRINGS,CO 80840, USA. NR 30 TC 12 Z9 12 U1 0 U2 1 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0731-5090 J9 J GUID CONTROL DYNAM JI J. Guid. Control Dyn. PD NOV-DEC PY 1991 VL 14 IS 6 BP 1301 EP 1308 DI 10.2514/3.20787 PG 8 WC Engineering, Aerospace; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA GW566 UT WOS:A1991GW56600026 ER PT J AU WIDHALM, JW HEISE, SA AF WIDHALM, JW HEISE, SA TI OPTIMAL INPLANE ORBITAL EVASIVE MANEUVERS USING CONTINUOUS LOW THRUST PROPULSION SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS LA English DT Note C1 USAF,FLIGHT DYNAM LAB,WRIGHT PATTERSON AFB,OH 45433. RP WIDHALM, JW (reprint author), USAF,SPACE COMMAND HEADQUARTERS,CTR AEROSP ANAL,PETERSON AFB,CO 80914, USA. NR 4 TC 1 Z9 6 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0731-5090 J9 J GUID CONTROL DYNAM JI J. Guid. Control Dyn. PD NOV-DEC PY 1991 VL 14 IS 6 BP 1323 EP 1326 DI 10.2514/3.20793 PG 4 WC Engineering, Aerospace; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA GW566 UT WOS:A1991GW56600032 ER PT J AU SHACKELFORD, SA AF SHACKELFORD, SA TI SYNTHESIS OF 1,3,5,5-TETRANITROHEXAHYDROPYRIMIDINE-2,2,4,4,6,6-D6 (DNNC-D6) AND ITS ADIOL-D4 PRECURSOR USING PARAFORMALDEHYDE-D2 AND UNLABELED REACTION INGREDIENTS SO JOURNAL OF LABELLED COMPOUNDS & RADIOPHARMACEUTICALS LA English DT Article DE DEUTERIOPARAFORMALDEHYDE; DINITROPROPANEDIOL; ADIOL; DI-TRANS-BUTYL-DINITROHEXAHYDROPYRIMIDINE; TETRANITROHEXAHYDROPYRIMIDINE; DNNC; TNDA ID THERMOCHEMICAL DECOMPOSITION; ISOTOPE AB Using commercially available paraformaldehyde-d2, the subject compounds were synthesized with unlabeled reactants and ordinary solvents. The 2,2-dinitropropane-1,3-diol-1,1,3,3,-d4 (ADIOL-d4) precursor was produced in greater than 99% isotopic purity with aqueous depolymerized paraformaldehyde-d2 and CH3NO2 in alkaline solution followed by oxidative AgNO3/NaNO2 nitration; then, ADIOL-d4 and depolymerized paraformaldehyde-d2 with t-butylamine in methanol afforded cyclic 1,3-di-t-butyl-5,5-dinitrohexahydropyrimidine-2,2,4,4,6,6-d6 (DBNP-d6). The 97% isotopically pure DNNC-d6 product resulted in 71% yield from an anhydrous HNO3 nitration of DBNP-d6. RP SHACKELFORD, SA (reprint author), USAF ACAD, FRANK J SEILER RES LAB, DIV ENERGET, COLORADO SPRINGS, CO 80840 USA. NR 17 TC 5 Z9 5 U1 0 U2 1 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 0362-4803 J9 J LABELLED COMPD RAD JI J. Label. Compd. Radiopharm. PD NOV PY 1991 VL 29 IS 11 BP 1197 EP 1206 DI 10.1002/jlcr.2580291104 PG 10 WC Biochemical Research Methods; Chemistry, Medicinal; Chemistry, Analytical SC Biochemistry & Molecular Biology; Pharmacology & Pharmacy; Chemistry GA GN884 UT WOS:A1991GN88400003 ER PT J AU MANCOJOHNSON, MJ ABSHIRE, TC JACOBSON, LJ MARLAR, RA AF MANCOJOHNSON, MJ ABSHIRE, TC JACOBSON, LJ MARLAR, RA TI SEVERE NEONATAL PROTEIN-C DEFICIENCY - PREVALENCE AND THROMBOTIC RISK SO JOURNAL OF PEDIATRICS LA English DT Article ID NEWBORN-INFANT; COAGULATION; PROTHROMBIN; PURPURA; DISEASE; BLOOD AB Severe deficiencies of protein C, a pivotal coagulation-regulatory protein, have been reported in neonates as an apparently transient condition. In this prospective study, cord blood was collected at 193 deliveries and assays of protein C were correlated with clinical status, other coagulation results, and outcome. Protein C levels of < 0.l unit/ml were found most frequently in preterm infants with respiratory distress, infants of diabetic mothers, and infants of twin gestations. Levels of protein C correlated with levels of factor VIII activity but did not correlate with markers of consumptive coagulopathy. A protein C level < 0.l unit/ml was significantly correlated with the subsequent onset of thrombosis, even when the effects of gestational age and birth weight were excluded. Low cord blood levels of protein C may reflect delayed maturation or increased turnover in certain infants and appear to convey an independent risk of thrombosis, but the critical concentration of protein C necessary to maintain neonatal hemostasis is not known. C1 USAF, MED CTR, DEPT PEDIAT, KEESLER AFB, MS 39534 USA. RP MANCOJOHNSON, MJ (reprint author), UNIV COLORADO, HLTH SCI CTR, DEPT PEDIAT HEMATOL, 4200 E 9TH AVE, BOX C222, DENVER, CO 80262 USA. NR 25 TC 60 Z9 60 U1 0 U2 1 PU MOSBY-ELSEVIER PI NEW YORK PA 360 PARK AVENUE SOUTH, NEW YORK, NY 10010-1710 USA SN 0022-3476 EI 1097-6833 J9 J PEDIATR-US JI J. Pediatr. PD NOV PY 1991 VL 119 IS 5 BP 793 EP 798 DI 10.1016/S0022-3476(05)80305-1 PG 6 WC Pediatrics SC Pediatrics GA GN296 UT WOS:A1991GN29600023 PM 1834822 ER PT J AU DAVIS, MW OBRIEN, WF AF DAVIS, MW OBRIEN, WF TI STAGE-BY-STAGE POSTSTALL COMPRESSION SYSTEM MODELING TECHNIQUE SO JOURNAL OF PROPULSION AND POWER LA English DT Article AB A one-dimensional, stage-by-stage axial compression system mathematical model has been constructed that can describe system behavior during poststall events such as surge and rotating stall. The model uses a numerical technique to solve the nonlinear, compressible conservation equations of mass, momentum, and energy. Inputs for blade forces and shaft work are provided by a set of quasi-steady stage characteristics modified by a first-order lagging equation to simulate dynamic stage characteristics. The model was operationally verified using experimental results for a three-stage, low-speed compressor. Using the model, two studies were conducted: one to determine the effect of heat transfer due to rapid system transients on poststall system behavior, and the other to determine the effect of a possible design modification on overall system behavior. Results from these studies demonstrate the use of this modeling technique in studies of compression system poststall behavior. C1 VIRGINIA POLYTECH INST & STATE UNIV,DEPT MECH ENGN,BLACKSBURG,VA 24061. RP DAVIS, MW (reprint author), SVERDRUP TECHNOL INC,AEDC GRP,MS 900,ARNOLD AFB,TN 37389, USA. NR 18 TC 7 Z9 7 U1 1 U2 1 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0748-4658 J9 J PROPUL POWER JI J. Propul. Power PD NOV-DEC PY 1991 VL 7 IS 6 BP 997 EP 1005 DI 10.2514/3.23419 PG 9 WC Engineering, Aerospace SC Engineering GA GU117 UT WOS:A1991GU11700021 ER PT J AU WASSON, DJ RAPLEY, JW CRONIN, RJ AF WASSON, DJ RAPLEY, JW CRONIN, RJ TI SUBPONTIC OSSEOUS HYPERPLASIA - A LITERATURE-REVIEW SO JOURNAL OF PROSTHETIC DENTISTRY LA English DT Review AB Several incidences of excessive bone growth beneath the pontics of posterior fixed partial dentures have been documented, and this phenomenon has been referred to as subpontic osseous hyperplasia. The clinical, radiographic, and microscopic features are discussed, including the presentation of several etiologies and treatment considerations. RP WASSON, DJ (reprint author), WILFORD HALL USAF MED CTR,DEPT PROSTHODONT,LACKLAND AFB,TX 78236, USA. NR 15 TC 6 Z9 7 U1 0 U2 0 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0022-3913 J9 J PROSTHET DENT JI J. Prosthet. Dent. PD NOV PY 1991 VL 66 IS 5 BP 638 EP 641 DI 10.1016/0022-3913(91)90444-2 PG 4 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA GM805 UT WOS:A1991GM80500012 PM 1805001 ER PT J AU HOROWITZ, GM SCOTT, RT HANKINS, GDV AF HOROWITZ, GM SCOTT, RT HANKINS, GDV TI RESULTS OF A PRENATAL SCREENING-PROGRAM FOR THE HUMAN-IMMUNODEFICIENCY-VIRUS IN A CROSS-SECTIONAL POPULATION SO JOURNAL OF REPRODUCTIVE MEDICINE LA English DT Article ID FALSE POSITIVE RATE; ENZYME IMMUNOASSAYS; OCTOBER 1985; HTLV-III; HIV; ANTIBODIES; WOMEN; AIDS; INFECTIONS; PATTERNS AB A prenatal screening program for antibody to the human immunodeficiency virus (HIV) was examined prospectively in a cross-sectional population. Routine screening was performed on 3,241 women during the first trimester. Serum samples yielding repeatedly positive results on an enzyme-linked immunosorbent assay (ELISA) (n = 6) were subjected to confirmatory Western blot testing. All the specimens were determined to be false positive with atypical banding regions not consistent with HIV-1 infection. This false-positive rate was higher than in previous reports of screening programs in low-risk populations (P < .005). Since antibody to HIV may not be detectable for several months after infection, we serially tested 984 of the women in different trimesters of pregnancy to determine whether repeat testing would yield seroconversion undetected at the first screening. No patient who initially tested negative on the ELISA tested positive later in gestation. We therefore recommend that routine screening be performed only once during pregnancy, preferably in the first or early second trimester, in the general population. C1 WILFORD HALL USAF MED CTR,DIV LEGAL MED,LACKLAND AFB,TX 78236. UNIFORMED SERV UNIV HLTH SCI,BETHESDA,MD 20814. RP HOROWITZ, GM (reprint author), WILFORD HALL USAF MED CTR,DEPT OBSTET & GYNECOL,LACKLAND AFB,TX 78236, USA. NR 33 TC 4 Z9 4 U1 0 U2 0 PU SCI PRINTERS & PUBL INC PI ST LOUIS PA P.O. DRAWER 12425 8342 OLIVE BLVD, ST LOUIS, MO 63132 SN 0024-7758 J9 J REPROD MED JI J. Reprod. Med. PD NOV PY 1991 VL 36 IS 11 BP 773 EP 778 PG 6 WC Obstetrics & Gynecology SC Obstetrics & Gynecology GA GR584 UT WOS:A1991GR58400003 PM 1765954 ER PT J AU DISIMILE, PJ SCAGGS, NE AF DISIMILE, PJ SCAGGS, NE TI WEDGE-INDUCED TURBULENT BOUNDARY-LAYER SEPARATION ON A ROUGHENED SURFACE AT MACH 6.0 SO JOURNAL OF SPACECRAFT AND ROCKETS LA English DT Article AB Compressible turbulent boundary-layer characteristics on a roughened surface were studied in the presence of a wedge-induced adverse pressure gradient. All tests were conducted at nominal Mach and unit Reynolds numbers of 33 x 10(6), 66 x 10(6), and 98 x 10(6)/m. Documentation of the surface pressure distribution confirmed the two dimensionality of the boundary-level now throughout the interaction region. A 10% change in the upstream extent of the separation point was observed when the Reynolds number was increased from 33 x 10(6) to 66 x 10(6)/m Pitot pressure and total temperature profiles in the boundary layer upstream and downstream of the interaction region were also acquired. Pitot pressure profiles on the ramp were found to reach a maximum 3.5 times that of the local boundary-layer edge pitot pressure. Similarly, total temperature profiles were found to overshoot the stagnation temperature. Furthermore, the bimodal character of these temperature profiles was observed on the ramp with peak values 5-30% larger than the freestream total temperature. C1 USAF,WRIGHT RES & DEV CTR,WRIGHT PATTERSON AFB,OH 45433. RP DISIMILE, PJ (reprint author), UNIV CINCINNATI,DEPT AEROSP ENGN,MAIL LOCATION 70,CINCINNATI,OH 45221, USA. NR 20 TC 1 Z9 1 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0022-4650 J9 J SPACECRAFT ROCKETS JI J. Spacecr. Rockets PD NOV-DEC PY 1991 VL 28 IS 6 BP 636 EP 645 DI 10.2514/3.26293 PG 10 WC Engineering, Aerospace SC Engineering GA HA093 UT WOS:A1991HA09300004 ER PT J AU RAPLEY, JW SWAN, RH CRONIN, RJ MATHEY, WS AF RAPLEY, JW SWAN, RH CRONIN, RJ MATHEY, WS TI THE USE OF DENTAL IMPLANTS FOR THE ORAL REHABILITATION OF THE MILITARY WORKING DOG - A CASE-REPORT SO JOURNAL OF THE AMERICAN ANIMAL HOSPITAL ASSOCIATION LA English DT Article AB A military working dog had severe periodontitis resulting in extraction of multiple teeth. In order to continue as a working dog, rehabilitation of dentition was required. After a minimum of three months for postextraction healing, a total of 13 implant fixtures were placed in the maxilla and mandible. A minimum of four months then was allowed for osseointegration to take place around the fixtures. The fixtures then were uncovered surgically and the dog prosthetically rehabilitated. The dog has adapted well to rehabilitation and is back to full duty as a military working dog. This is the first reported use of implants for oral rehabilitation of canine dentition. C1 WILFORD HALL USAF MED CTR,MIL DOG VET SERV,LACKLAND AFB,TX 78236. RP RAPLEY, JW (reprint author), UNIV MISSOURI,SCH DENT,DEPT GRAD PERIODONT,KANSAS CITY,MO 64108, USA. NR 4 TC 3 Z9 3 U1 0 U2 4 PU AMER ANIMAL HOSPITAL ASSOC PI LAKEWOOD PA PO BOX 150899, LAKEWOOD, CO 80215-0899 SN 0587-2871 J9 J AM ANIM HOSP ASSOC JI J. Am. Anim. Hosp. Assoc. PD NOV-DEC PY 1991 VL 27 IS 6 BP 641 EP 645 PG 5 WC Veterinary Sciences SC Veterinary Sciences GA GV010 UT WOS:A1991GV01000011 ER PT J AU SCHINDLER, WG MATHEY, WS AF SCHINDLER, WG MATHEY, WS TI ENDODONTIC TREATMENT ON THE MAXILLARY 4TH PREMOLAR OF THE DOG - A CASE-REPORT SO JOURNAL OF THE AMERICAN ANIMAL HOSPITAL ASSOCIATION LA English DT Article ID CANINE TOOTH; THERAPY AB This report describes the successful endodontic treatment of a maxillary fourth premolar in the dog. Root canal therapy was indicated due to pulpal necrosis secondary to coronal tooth fracture. C1 WILFORD HALL USAF MED CTR,MIL DOG VET SERV,LACKLAND AFB,TX 78236. RP SCHINDLER, WG (reprint author), WILFORD HALL USAF MED CTR,DEPT ENDODONT,LACKLAND AFB,TX 78236, USA. NR 6 TC 2 Z9 2 U1 0 U2 0 PU AMER ANIMAL HOSPITAL ASSOC PI LAKEWOOD PA PO BOX 150899, LAKEWOOD, CO 80215-0899 SN 0587-2871 J9 J AM ANIM HOSP ASSOC JI J. Am. Anim. Hosp. Assoc. PD NOV-DEC PY 1991 VL 27 IS 6 BP 646 EP 648 PG 3 WC Veterinary Sciences SC Veterinary Sciences GA GV010 UT WOS:A1991GV01000012 ER PT J AU JERO, PD KERANS, RJ PARTHASARATHY, TA AF JERO, PD KERANS, RJ PARTHASARATHY, TA TI EFFECT OF INTERFACIAL ROUGHNESS ON THE FRICTIONAL STRESS MEASURED USING PUSHOUT TESTS SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY LA English DT Article ID CERAMIC-MATRIX COMPOSITES; FIBER PULL-OUT; SHEAR-STRENGTH; GLASS-MATRIX AB A fiber which is partially pushed out of a surrounding matrix and subsequently pushed in the opposite direction exhibits a substantial decrease in sliding friction as it passes through its original position (its "origin"). This is manifest by a decrease in the load required to push the fiber. It is suggested that interfacial roughness causes this phenomenon and that the decrease in load (friction) is associated with the fiber seating back into its original position. The period of the drop has been correlated with the spatial extent of the interfacial surface roughness, and the magnitude of the drop referred to hereafter as the seating drop) has been correlated with the amplitude of the interfacial roughness. Observation of the seating drop allows separation of the friction associated with interfacial irregularities from that resulting primarily from residual stresses at the interface. Implications for composite design and use are discussed. The effect of abrasion at the sliding interface is also addressed. C1 UNIVERSAL ENERGY SYST INC,DAYTON,OH 45432. RP JERO, PD (reprint author), WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. RI Parthasarathy, Triplicane/B-7146-2011 OI Parthasarathy, Triplicane/0000-0002-5449-9754 NR 30 TC 115 Z9 115 U1 1 U2 9 PU AMER CERAMIC SOC PI WESTERVILLE PA 735 CERAMIC PLACE, PO BOX 6136, WESTERVILLE, OH 43081-6136 SN 0002-7820 J9 J AM CERAM SOC JI J. Am. Ceram. Soc. PD NOV PY 1991 VL 74 IS 11 BP 2793 EP 2801 DI 10.1111/j.1151-2916.1991.tb06845.x PG 9 WC Materials Science, Ceramics SC Materials Science GA GQ453 UT WOS:A1991GQ45300010 ER PT J AU ZAWADA, LP BUTKUS, LM HARTMAN, GA AF ZAWADA, LP BUTKUS, LM HARTMAN, GA TI TENSILE AND FATIGUE BEHAVIOR OF SILICON-CARBIDE FIBER-REINFORCED ALUMINOSILICATE GLASS SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY LA English DT Article ID CERAMIC-MATRIX COMPOSITES AB The onset of damage accumulation in ceramic-matrix composites occurs as matrix microcracking and fiber/matrix debonding. Tension tests were used to determine the stress and strain levels to first initiate microcracking in both unidirectional and cross-ply laminates of silicon carbide fiber-reinforced aluminosilicate glass. Tension-tension fatigue tests were then conducted at stress levels below and above the matrix cracking stress level. At stress levels below matrix microcracking, no loss in stiffness occurred. At stresses above matrix cracking, the elastic modulus of the unidirectional specimens exhibited a gradual decrease during the first 10 000 cycles, and then stabilized. However, the cross-ply material sustained most of the damage on the first loading cycle. It is shown that fatigue life can be related to nonlinear stress-strain behavior of the 0-degrees plies, and that the cyclic strain limit was approximately 0.3%. C1 UNIV DAYTON,RES INST,DAYTON,OH 45469. RP ZAWADA, LP (reprint author), WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433, USA. NR 14 TC 69 Z9 71 U1 0 U2 3 PU AMER CERAMIC SOC PI WESTERVILLE PA 735 CERAMIC PLACE, PO BOX 6136, WESTERVILLE, OH 43081-6136 SN 0002-7820 J9 J AM CERAM SOC JI J. Am. Ceram. Soc. PD NOV PY 1991 VL 74 IS 11 BP 2851 EP 2858 DI 10.1111/j.1151-2916.1991.tb06854.x PG 8 WC Materials Science, Ceramics SC Materials Science GA GQ453 UT WOS:A1991GQ45300019 ER PT J AU MYERS, MEF KNOZ, SA GREGOIRE, MB AF MYERS, MEF KNOZ, SA GREGOIRE, MB TI INDIVIDUALIZED MENU SLIPS IMPROVE THE ACCURACY OF PATIENT FOOD TRAYS SO JOURNAL OF THE AMERICAN DIETETIC ASSOCIATION LA English DT Article AB We evaluated the effect of five menu slip formats on worker preference and accuracy of food trays in a simulated hospital tray line. Menu slip formats were either individualized or preprinted, and various combinations of color coding, large type, and bold print were used to code the type of diet and the menu choices to be placed on the tray. Student volunteers who had not worked in hospital food service were used as tray line workers to reduce the possibility of prior preference for a menu slip format. Results indicate that menu slip format significantly affects both worker preference and the accuracy of assembled food trays. Errors were significantly lower with individualized formats that identified menu selections in bold print and type of diet in either large type or colored ink. The highest error rate was found with preprinted formats. An individualized menu slip that identified menu selections and diet orders with large type and bold print received the highest worker preference rating and resulted in the most accurate tray assembly. C1 KANSAS STATE UNIV AGR & APPL SCI, DEPT HOTEL RESTAURANT INSTITUT MANAGEMENT & DIETET, MANHATTAN, KS 66506 USA. KANSAS STATE UNIV AGR & APPL SCI, DEPT IND ENGN, MANHATTAN, KS 66506 USA. USAF, MED CTR, NUTR MED SERV, SCOTT AFB, IL 62225 USA. NR 13 TC 1 Z9 1 U1 0 U2 1 PU AMER DIETETIC ASSOC PI CHICAGO PA 120 S RIVERSIDE PLZ, STE 2000, CHICAGO, IL 60606-6995 USA SN 0002-8223 J9 J AM DIET ASSOC JI J. Am. Diet. Assoc. PD NOV PY 1991 VL 91 IS 11 BP 1425 EP 1428 PG 4 WC Nutrition & Dietetics SC Nutrition & Dietetics GA GP559 UT WOS:A1991GP55900017 ER PT J AU GSCHWENDER, LJ SNYDER, CE FULTZ, GW CHEN, LS AF GSCHWENDER, LJ SNYDER, CE FULTZ, GW CHEN, LS TI SYNTHESIS AND CHARACTERIZATION OF A HIGH-TEMPERATURE, LOW-VOLATILITY PHOSPHATE ADDITIVE FOR AEROSPACE APPLICATIONS SO LUBRICATION ENGINEERING LA English DT Article AB Tricresyl phosphate (TCP) is a widely used and effective antiwear additive for a variety of lubricants used in aerospace military applications. However, for a high-temperature gas turbine engine oil (GTO) application, volatility and thermo-oxidative stability limitations preclude the use of TCP. For this GTO application, high molecular weight, and thermally and thermo-oxidatively stable groups were incorporated into a phosphate-based additive. This paper describes the synthesis of this additive and its successful performance. RP GSCHWENDER, LJ (reprint author), WRIGHT LAB,WRIGHT PATTERSON AFB,OH, USA. NR 0 TC 4 Z9 4 U1 0 U2 0 PU SOC TRIBOLOGISTS & LUBRICATION ENGINEERS PI PARK RIDGE PA 838 BUSSE HIGHWAY, PARK RIDGE, IL 60068 SN 0024-7154 J9 LUBR ENG JI Lubric. Eng. PD NOV PY 1991 VL 47 IS 11 BP 935 EP 938 PG 4 WC Engineering, Mechanical SC Engineering GA GN019 UT WOS:A1991GN01900006 ER PT J AU ARMBRUSTER, DA AF ARMBRUSTER, DA TI THE AIR-FORCES-CENTRAL-REFERENCE-LABORATORY - MAXIMIZING SERVICE WHILE MINIMIZING COST SO MILITARY MEDICINE LA English DT Article AB The Laboratory Services Branch (Epi Lab) of the Epidemiology Division, Brooks AFB, Texas, is designated by regulation to serve as the Air Force's central reference laboratory, providing clinical laboratory testing support to all Air Force medical treatment facilities (MTFs). Epi Lab recognized that it was not offering the MTFs a service comparable to civilian reference laboratories and that, as a result, the Air Force medical system was spending hundreds of thousands of dollars yearly for commercial laboratory support. An in-house laboratory upgrade program was proposed to and approved by the USAF Surgeon General, as a Congressional Efficiencies Add project, to launch a two-phase initiative consisting of a 1-year field trial of 30 MTFs, followed by expansion to another 60 MTFs. Major components of the program include overnight air courier service to deliver patient samples to Epi Lab, a mainframe computer laboratory information system and electronic reporting of results to the MTFs throughout the CONUS. Application of medical marketing concepts and the Total Quality Management (TQM) philosophy allowed Epi to provide dramatically enhanced reference service at a cost savings of about $1 million to the medical system. The Epi Lab upgrade program represents an innovative problem-solving approach, combining technical and managerial improvements, resulting in substantial patient care service and financial dividends. It serves as an example of successful application of TQM and marketing within the military medical system. RP ARMBRUSTER, DA (reprint author), USAF,SCH AEROSP MED,AFSC,DIV HUMAN SYST,DIV EPIDEM,LAB SERV BRANCH,BROOKS AFB,TX 78235, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ASSN MILITARY SURG US PI BETHESDA PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 SN 0026-4075 J9 MIL MED JI Milit. Med. PD NOV PY 1991 VL 156 IS 11 BP 602 EP 608 PG 7 WC Medicine, General & Internal SC General & Internal Medicine GA GP395 UT WOS:A1991GP39500013 PM 1771008 ER PT J AU CRAMER, FS AF CRAMER, FS TI OXYGEN AND ACCELERATION SO MILITARY MEDICINE LA English DT Article AB Significant numbers of high performance fighter aircraft continue to be lost due to acceleration (Gz)-induced loss of consciousness. This is due to the rapid onset of high sustained Gz which results in the sudden loss of blood flow to the brain. Present research efforts to extend Gz tolerance are directed toward the maintenance of cerebral blood flow, i.e. straining maneuvers, anti-G suits, tilt seats. The purpose of this paper is to review the present situation and discuss the potential benefit of breathing 100% oxygen at high pressure. Basic science evidence and experience with hyperbaric oxygen in the clinical setting suggest that if the oxygen concentration in the brain tissue is increased, prior to the onset of Gz, additional time of useful consciousness may be realized. The advanced tactical fighter, now in the design stage, will have a sustained Gz capability of 12-14 Gz. This is above human tolerance at the present time and provides an impetus for future acceleration research. Continued aircraft loss due to Gz loss of consciousness will remain an operational problem in aerospace pathology in the 1990s and beyond. RP CRAMER, FS (reprint author), USAF,MED CTR,WIESBADEN,GERMANY. NR 0 TC 0 Z9 0 U1 0 U2 1 PU ASSN MILITARY SURG US PI BETHESDA PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 SN 0026-4075 J9 MIL MED JI Milit. Med. PD NOV PY 1991 VL 156 IS 11 BP 608 EP 611 PG 4 WC Medicine, General & Internal SC General & Internal Medicine GA GP395 UT WOS:A1991GP39500014 PM 1771009 ER PT J AU GALLAGHER, MA KELLY, EJ AF GALLAGHER, MA KELLY, EJ TI A NEW METHODOLOGY FOR MILITARY FORCE STRUCTURE-ANALYSIS SO OPERATIONS RESEARCH LA English DT Article DE MILITARY, COST EFFECTIVE, FORCE TRADEOFF ANALYSES; MILITARY, FORCE EFFECTIVENESS, CONVENTIONAL AND NUCLEAR FORCE CAPABILITY ASSESSMENT; MILITARY, TARGETING, GENERIC TARGETS FOR LARGE-SCALE CONVENTIONAL ANALYSIS AB A new methodology provides military decision makers with information on the aggregate effectiveness of large-scale conventional (nonnuclear) and combined nuclear and conventional force structures against a wide range of targets. This methodology coupled a generic data base of representative targets, to which real-world targets can be mapped, with a nuclear force-exchange model that uses goal programming techniques to determine optimal allocations of weapons to targets. This methodology enabled military strategists to analyze the effectiveness of existing and proposed weapon systems against a variety of targets and to study a number of force structures constrained by proposed force reduction treaties and tight defense budgets. C1 UNIV CALIF LOS ALAMOS SCI LAB,ENVIRONM RESTORAT PROGRAM,LOS ALAMOS,NM 87545. RP GALLAGHER, MA (reprint author), USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433, USA. NR 5 TC 5 Z9 5 U1 3 U2 3 PU OPERATIONS RESEARCH SOC AMER PI LINTHICUM HTS PA 901 ELKRIDGE LANDING RD, STE 400, LINTHICUM HTS, MD 21090-2920 SN 0030-364X J9 OPER RES JI Oper. Res. PD NOV-DEC PY 1991 VL 39 IS 6 BP 877 EP 885 DI 10.1287/opre.39.6.877 PG 9 WC Management; Operations Research & Management Science SC Business & Economics; Operations Research & Management Science GA GV746 UT WOS:A1991GV74600002 ER PT J AU VOELZ, DG DAYTON, DC AF VOELZ, DG DAYTON, DC TI EXPERIMENTAL MEASUREMENTS OF THE STATISTICAL PROPERTIES OF A MONOCHROMATIC SPECKLE PATTERN SO OPTICS LETTERS LA English DT Article ID DECONVOLUTION AB An experimental approach to the measurement of phase of a coherent optical field with a Shack-Hartmann sensor is presented. We demonstrate the usefulness of this sensor by verifying a theoretical model for the distribution of ray directions in a monochromatic speckle pattern. C1 APPL TECHNOL ASSOCIATES INC,ALBUQUERQUE,NM 87106. RP VOELZ, DG (reprint author), USAF,PHILLIPS LAB,ADV IMAGING BRANCH,KIRTLAND AFB,NM 87117, USA. NR 9 TC 1 Z9 1 U1 0 U2 0 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0146-9592 J9 OPT LETT JI Opt. Lett. PD NOV 1 PY 1991 VL 16 IS 21 BP 1635 EP 1637 DI 10.1364/OL.16.001635 PG 3 WC Optics SC Optics GA GM708 UT WOS:A1991GM70800003 PM 19784092 ER PT J AU WALSH, WF STANLEY, S LALLY, KP STRIBLEY, RE TREECE, DP MCCLESKEY, F NULL, DM AF WALSH, WF STANLEY, S LALLY, KP STRIBLEY, RE TREECE, DP MCCLESKEY, F NULL, DM TI UREAPLASMA-UREALYTICUM DEMONSTRATED BY OPEN LUNG-BIOPSY IN NEWBORNS WITH CHRONIC LUNG-DISEASE SO PEDIATRIC INFECTIOUS DISEASE JOURNAL LA English DT Article DE UREAPLASMA-UREALYTICUM; CHRONIC LUNG DISEASE ID BIRTH-WEIGHT INFANTS; GENITAL MYCOPLASMAS; COLONIZATION; PREGNANCY; PNEUMONIA; INFECTIONS; HOMINIS AB Lung biopsy tissue from eight infants with chronic lung disease was evaluated for the presence of Ureaplasma urealyticum. Specimens from four infants grew the organism. Pleural fluid cultures matched lung tissue but tracheal cultures were negative in two babies with positive lung tissue. There were no distinguishing pathologic findings in the four culture-positive infants which could be used to identify them vs. the culture-negative infants. Three culture-positive infants improved clinically after therapy directed at Ureaplasma even though two remained culture-positive. Ureaplasma grows in lung tissue of infants with chronic lung disease, it does not demonstrate any specific standard pathologic findings and tissue cultures do not match endotracheal cultures. C1 WILFORD HALL USAF MED CTR,DEPT PEDIAT,BROOKS AFB,TX. WILFORD HALL USAF MED CTR,DEPT PATHOL,BROOKS AFB,TX. WILFORD HALL USAF MED CTR,DIV EPIDEMIOL,BROOKS AFB,TX. RP WALSH, WF (reprint author), WILFORD HALL USAF MED CTR,SGHP,DEPT PEDIAT,LACKLAND AFB,TX 78236, USA. NR 17 TC 24 Z9 25 U1 0 U2 0 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0891-3668 J9 PEDIATR INFECT DIS J JI Pediatr. Infect. Dis. J. PD NOV PY 1991 VL 10 IS 11 BP 823 EP 827 DI 10.1097/00006454-199111000-00006 PG 5 WC Immunology; Infectious Diseases; Pediatrics SC Immunology; Infectious Diseases; Pediatrics GA GP048 UT WOS:A1991GP04800007 PM 1749694 ER PT J AU PARTHASARATHY, TA JERO, PD KERANS, RJ AF PARTHASARATHY, TA JERO, PD KERANS, RJ TI EXTRACTION OF INTERFACE PROPERTIES FROM A FIBER PUSH-OUT TEST SO SCRIPTA METALLURGICA ET MATERIALIA LA English DT Article ID MATRIX; COMPOSITES C1 UNIVERSAL ENERGY SYST INC,DAYTON,OH 45432. WRIGHT LAB,MLLM,WRIGHT PATTERSON AFB,OH 45433. RI Parthasarathy, Triplicane/B-7146-2011 OI Parthasarathy, Triplicane/0000-0002-5449-9754 NR 15 TC 31 Z9 31 U1 2 U2 11 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0956-716X J9 SCRIPTA METALL MATER JI Scr. Metall. Materialia PD NOV PY 1991 VL 25 IS 11 BP 2457 EP 2462 DI 10.1016/0956-716X(91)90049-7 PG 6 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA GM988 UT WOS:A1991GM98800009 ER PT J AU HANSON, EN HARVEY, TM ROTH, MA AF HANSON, EN HARVEY, TM ROTH, MA TI EXPERIENCES IN DBMS IMPLEMENTATION USING AN OBJECT-ORIENTED PERSISTENT PROGRAMMING LANGUAGE AND A DATABASE TOOLKIT SO SIGPLAN NOTICES LA English DT Article AB The EXODUS database toolkit, and in particular the E persistent programming language, have been used in two substantial database system implementation efforts by the authors (the Ariel database rule system and the Triton nested relation DBMS). Observed advantages of using a persistent programming language for database system implementation include ease of implementation of special-purpose persistent objects used by the DBMS such as catalogs, data indexes, rule indexes, and nested relational structures. Other advantages of using E (a persistent version of C++) that are independent of the persistence issue are the usefulness of object-oriented programming in developing large software systems, and the utility of the Collection abstraction in E. Observed disadvantages include (1) the inability to map the type system of the DBMS to the type system of the underlying programming language while still retaining good performance for ad-hoc queries, and (2) software engineering difficulties due to the distinction in E between database types and main-memory types. C1 USAF,WRIGHT AERONAUT LABS,ARTIFIC INTELLIGENCE TECHNOL OFF,WRIGHT PATTERSON AFB,OH 45433. WRIGHT STATE UNIV,DAYTON,OH 45435. USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,WRIGHT PATTERSON AFB,OH 45433. NR 34 TC 1 Z9 1 U1 0 U2 0 PU ASSOC COMPUTING MACHINERY PI NEW YORK PA 1515 BROADWAY, NEW YORK, NY 10036 SN 0362-1340 J9 SIGPLAN NOTICES JI Sigplan Not. PD NOV PY 1991 VL 26 IS 11 BP 314 EP 328 PG 15 WC Computer Science, Software Engineering SC Computer Science GA GK927 UT WOS:A1991GK92700027 ER PT J AU HURLBERT, DF MUNOZ, CJ APT, C AF HURLBERT, DF MUNOZ, CJ APT, C TI FACILITATING PROGRESS IN GROUP-THERAPY BY MEANS OF THE BASIC HUMAN-RELATIONS LABORATORY SO SOCIAL WORK LA English DT Editorial Material C1 UNIV TEXAS,DEPT SOCIAL & POLICY SCI,SAN ANTONIO,TX 78285. USAF,WASHINGTON,DC 20330. DARNALL ARMY COMMUNITY HOSP,FT HOOD ARMY INSTALLAT,FT HOOD,TX. FT HOOD ARMY INSTALLAT,ARMY FAMILY ADVOCACY PROGRAM,FT HOOD,TX. NR 6 TC 0 Z9 0 U1 0 U2 0 PU NATL ASSOC SOCIAL WORKERS PI WASHINGTON PA 750 FIRST ST, NE, STE 700, WASHINGTON, DC 20002-4241 SN 0037-8046 J9 SOC WORK JI Soc. Work PD NOV PY 1991 VL 36 IS 6 BP 545 EP 546 PG 2 WC Social Work SC Social Work GA GQ843 UT WOS:A1991GQ84300015 PM 1754931 ER PT J AU HOEFER, RA RODRIGUEZ, DI MCAULEY, CE BRANTLEY, S LEQUIRE, M SPIES, JB SILVER, LF AF HOEFER, RA RODRIGUEZ, DI MCAULEY, CE BRANTLEY, S LEQUIRE, M SPIES, JB SILVER, LF TI PRELIMINARY EXPERIENCE WITH THE HUTSON-RUSSELL LOOP CUTANEOUS CHOLEDOCHOJEJUNOSTOMY SO SURGERY GYNECOLOGY & OBSTETRICS LA English DT Article ID BILIARY STRICTURES; DILATATION; CARCINOMA AB In 1984, the use of a choledochojejunocutaneous fistula was described to allow balloon dilation of benign biliary strictures. Later, the use of the technique to obtain repeated access to the biliary tree in a larger series of patients was reported. The experience provided a foundation for the application of the technique in nine patients at Wilford Hall United States Air Force Medical Center. Represented were a variety of benign and malignant disorders. Six patient reports are offered from this preliminary experience to demonstrate the range of problems lending themselves to the use of the Hutson-Russell loop. Suggestions for present and future applications of the versatile choledochojejunocutaneous loop are included. C1 WILFORD HALL USAF MED CTR,DEPT GEN SURG,LACKLAND AFB,TX 78236. WILFORD HALL USAF MED CTR,DEPT INTERVENT RADIOL,LACKLAND AFB,TX 78236. NR 8 TC 1 Z9 1 U1 0 U2 0 PU FRANKLIN H MARTIN FOUNDATION PI CHICAGO PA 55 E ERIE ST, CHICAGO, IL 60611 SN 0039-6087 J9 SURG GYNECOL OBSTET JI Surg. Gynecol. Obstet. PD NOV PY 1991 VL 173 IS 5 BP 353 EP 358 PG 6 WC Obstetrics & Gynecology; Surgery SC Obstetrics & Gynecology; Surgery GA GM753 UT WOS:A1991GM75300003 PM 1948583 ER PT J AU SHATTUCK, DA AF SHATTUCK, DA TI THE MAGNIFICENT MOUNTAIN WOMEN - ADVENTURES IN THE COLORADO ROCKIES - ROBERTSON,J SO WESTERN HISTORICAL QUARTERLY LA English DT Book Review RP SHATTUCK, DA (reprint author), USAF ACAD,COLORADO SPRINGS,CO 80840, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU WESTERN HISTORY ASSOCIATION PI LOGAN PA UTAH STATE UNIV, UMC 0740, LOGAN, UT 84322 SN 0043-3810 J9 WESTERN HIST QUART JI West. Hist. Q. PD NOV PY 1991 VL 22 IS 4 BP 486 EP 487 DI 10.2307/970999 PG 2 WC History SC History GA GR812 UT WOS:A1991GR81200017 ER PT J AU KEEFER, KJ YEO, YK HENGEHOLD, RL AF KEEFER, KJ YEO, YK HENGEHOLD, RL TI STUDY OF THE BROAD LUMINESCENCE BANDS IN GE-IMPLANTED GAAS CENTERED AT 1.44-1.46 EV SO JOURNAL OF APPLIED PHYSICS LA English DT Note ID PHOTO-LUMINESCENCE; DEEP ACCEPTOR AB Above- and below-band-gap excitation photoluminescence studies were performed on GaAs samples implanted with Ge, Ga, As, {Ge + Ga}, and {Ge + As} to assess the nature of a broad luminescence band, the so-called Q band, centered in the 1.44-1.46-eV range. Below-band-gap excitation enabled resolution of the broad band into two separate overlapping bands. These measurements, in conjunction with sample temperature-dependent studies, indicate that the main contribution to the broad band observed in Ge-implanted GaAs is due to the Ga antisite double-acceptor defect. RP KEEFER, KJ (reprint author), USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433, USA. NR 11 TC 6 Z9 6 U1 2 U2 2 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD OCT 15 PY 1991 VL 70 IS 8 BP 4634 EP 4636 DI 10.1063/1.349075 PG 3 WC Physics, Applied SC Physics GA GL023 UT WOS:A1991GL02300093 ER PT J AU REYNOLDS, DC EVANS, KR STUTZ, CE BAJAJ, KK YU, PW AF REYNOLDS, DC EVANS, KR STUTZ, CE BAJAJ, KK YU, PW TI PHOTOLUMINESCENCE DETERMINATION OF THE BINDING-ENERGY OF RESIDUAL DONORS IN 300-A GAAS/ALXGA1-XAS QUANTUM-WELLS SO PHYSICAL REVIEW B LA English DT Article ID HYDROGENIC IMPURITY STATES; PHOTO-LUMINESCENCE; BOUND EXCITONS AB The binding energy E(B) of residual donors in nominally 300-angstrom-wide GaAs/AlxGa1-xAs quantum wells has been determined from the results of low-temperature photoluminescence (PL), PL-excitation (PLE), and resonant-excitation (RE) measurements. The center of each quantum well was delta doped with 3 x 10(9) cm-2 Be acceptors, resulting in ionization of residual donors and allowing the observation of free-heavy-hole-to-donor (D0,h) transitions. The n = 1 (D0,h), transition for center-well donors was observed in PL, and the n = 2 (D0,h) transition for center-well donors was observed in PLE. Two transitions associated with (D0,h) were observed in PLE; it is proposed that both the 2s and 2p +/- excited states of the donor are being observed. The calculated binding energy of the 2s and 2p +/- excited states can be added to the measured transition energy from the heavy-hole subband to the respective excited states. This method gives a donor binding energy of 8.0 +/- 0.5 meV. The calculated binding energy of the donor for a 300-angstrom-wide well is 8.7 meV according to Greene and Bajaj. The observed energy separation between the 2s and 2p +/- excited states of the donor is 0.7 meV, in reasonably good agreement with the calculated value of 0.5 meV. We note that this work is an observation of the n = 2 state of the donor from PLE spectra, as well as the detection of the 2s and 2p +/- levels. C1 WRIGHT LAB,ELRA,WRIGHT PATTERSON AFB,OH 45433. EMORY UNIV,DEPT PHYS,ATLANTA,GA 30322. WRIGHT STATE UNIV,UNIV RES CTR,DAYTON,OH 45435. RP REYNOLDS, DC (reprint author), SE CTR ELECT ENGN EDUC,ST CLOUD,FL 32769, USA. NR 15 TC 3 Z9 3 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD OCT 15 PY 1991 VL 44 IS 16 BP 8869 EP 8872 DI 10.1103/PhysRevB.44.8869 PG 4 WC Physics, Condensed Matter SC Physics GA GN304 UT WOS:A1991GN30400050 ER PT J AU ROGGEMANN, MC AF ROGGEMANN, MC TI LIMITED DEGREE-OF-FREEDOM ADAPTIVE OPTICS AND IMAGE-RECONSTRUCTION SO APPLIED OPTICS LA English DT Article DE LIMITED DEGREE-OF-FREEDOM ADAPTIVE OPTICS; IMAGE RECONSTRUCTION; INVERSE FILTERING ID LASER GUIDE STARS; ATMOSPHERIC-TURBULENCE; PERFORMANCE ANALYSIS AB The use of limited degree-of-freedom adaptive optics in conjunction with statistical averaging and a linear image reconstruction algorithm is addressed. Image reconstruction is traded for full predetection compensation. It is shown through analytic calculations that the average optical transfer function (OTF) is significant for high spatial frequencies in the case of imaging through atmospheric turbulence with an adaptive optics system composed of a Hartmann-type wave-front sensor and a deformable mirror possessing far fewer actuators than one per atmospheric coherence diameter (r0). Statistical averaging is used to overcome the effects of measurement noise and randomness in individual realizations of the OTF. The imaging concept and signal-to-noise considerations are presented. RP ROGGEMANN, MC (reprint author), USAF,WEAP LAB,WL ARCI,KIRTLAND AFB,NM 87117, USA. NR 17 TC 50 Z9 50 U1 0 U2 2 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD OCT 10 PY 1991 VL 30 IS 29 BP 4227 EP 4233 PG 7 WC Optics SC Optics GA GL017 UT WOS:A1991GL01700010 PM 20706528 ER PT J AU GANS, HD ANDERSON, WJ AF GANS, HD ANDERSON, WJ TI STRUCTURAL OPTIMIZATION INCORPORATING CENTRIFUGAL AND CORIOLIS EFFECTS SO AIAA JOURNAL LA English DT Article ID INVERSE PERTURBATION METHOD AB The problem of structural optimization in the presence of centrifugal and Coriolis effects was studied for a rotating blade and for a rotating beam. A finite-element formulation was used and optimization was performed by applying nonlinear inverse perturbation. Centrifugal forces were modeled by the use of differential stiffness in a small displacement approximation, and Coriolis effects were obtained by employing Coriolis finite-element matrices. The nonlinear inverse perturbation scheme was then modified to account for the mild geometric nonlinearities posed by differential stiffness and was also modified to incorporate the complex phase changes resulting from Coriolis effects. Finally, the method was applied to small and large changes in the fundamental (bending) frequency of two rotating systems. Satisfactory results were obtained. C1 UNIV MICHIGAN,DEPT AEROSP ENGN,ANN ARBOR,MI 48109. RP GANS, HD (reprint author), USAF,INST TECHNOL,DEPT AERONAUT & ASTRONAUT,AREA B,BLDG 640,ROOM 208,WRIGHT PATTERSON AFB,OH 45433, USA. NR 20 TC 5 Z9 5 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0001-1452 J9 AIAA J JI AIAA J. PD OCT PY 1991 VL 29 IS 10 BP 1743 EP 1750 DI 10.2514/3.10798 PG 8 WC Engineering, Aerospace SC Engineering GA GH486 UT WOS:A1991GH48600025 ER PT J AU SNYDER, HW BERTRAM, JH HENRY, DH KIPROV, DD BENNY, WB MITTELMAN, A MESSERSCHMIDT, GL COCHRAN, SK PERKINS, W BALINT, JP JONES, FR AF SNYDER, HW BERTRAM, JH HENRY, DH KIPROV, DD BENNY, WB MITTELMAN, A MESSERSCHMIDT, GL COCHRAN, SK PERKINS, W BALINT, JP JONES, FR TI USE OF PROTEIN-A IMMUNOADSORPTION AS A TREATMENT FOR THROMBOCYTOPENIA IN HIV-INFECTED HOMOSEXUAL MEN - A RETROSPECTIVE EVALUATION OF 37 CASES SO AIDS LA English DT Note DE HIV-INFECTION; THROMBOCYTOPENIA; PROTEIN-A; IMMUNOADSORPTION ID ACQUIRED IMMUNODEFICIENCY SYNDROME; EXTRACORPOREAL IMMUNOADSORPTION; AIDS; RISK AB Thirty-seven HIV-infected homosexual men with thrombocytopenia (< 100 x 10(9)/l) received protein A immunoadsorption treatments to remove platelet-sensitizing immunoglobulin (Ig) G and circulating immune complexes (CIC) from plasma. Patients received an average of six treatments each, consisting of 250 ml plasma over a 3-week period. Clinical improvement in hemorrhagic symptoms associated with substantial increase in platelet counts was achieved in 18 patients. These responses were maintained over a median follow-up period of more than 7 months in 14 evaluable patients who were not lost to follow-up (three patients relapsed in 2 weeks and one received another therapy). Generally, moderate transient treatment-related side-effects included fever, musculoskeletal pain, chills and nausea. A transient serum sickness-like reaction was observed in seven patients, leading to termination of treatment in two. Clinical responses were associated with significant decreases in levels of platelet-sensitizing Ig, including CIC. Stimulation of broadly cross-reactive anti-antigen-binding fragment [F(ab)2] antibodies contributed to these responses. Protein A immunoadsorption is an effective alternative treatment for HIV-associated thrombocytopenia. C1 UNIV SO CALIF,MED CTR,NORRIS CANC CTR,LOS ANGELES,CA 90089. GRAD HOSP PHILADELPHIA,PHILADELPHIA,PA 19146. CHILDRENS HOSP,DEPT CELLULAR IMMUNOL,SAN FRANCISCO,CA 94119. NEW YORK MED COLL,DEPT MED,VALHALLA,NY 10595. VANCOUVER GEN HOSP,CELL SEPARATOR UNIT,VANCOUVER V5Z 1M9,BC,CANADA. WESTCHESTER CTY MED CTR,VALHALLA,NY 10595. WILFORD HALL USAF MED CTR,DEPT MED,LACKLAND AFB,TX 78236. RP SNYDER, HW (reprint author), IMRE CORP,130 5TH AVE N,SEATTLE,WA 98109, USA. NR 10 TC 16 Z9 16 U1 0 U2 0 PU RAPID SCIENCE PUBLISHERS PI LONDON PA 2-6 BOUNDARY ROW, LONDON, ENGLAND SE1 8NH SN 0269-9370 J9 AIDS JI Aids PD OCT PY 1991 VL 5 IS 10 BP 1257 EP 1260 DI 10.1097/00002030-199110000-00017 PG 4 WC Immunology; Infectious Diseases; Virology SC Immunology; Infectious Diseases; Virology GA GM224 UT WOS:A1991GM22400017 PM 1786153 ER PT J AU PARKINSON, MD STOUT, RW AF PARKINSON, MD STOUT, RW TI TUBERCULOSIS SO AMERICAN FAMILY PHYSICIAN LA English DT Letter RP PARKINSON, MD (reprint author), USAF,SCH AEROSP MED,AFSC,BROOKS AFB,TX 78235, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER ACAD FAMILY PHYSICIANS PI KANSAS CITY PA 8880 WARD PARKWAY, KANSAS CITY, MO 64114-2797 SN 0002-838X J9 AM FAM PHYSICIAN JI Am. Fam. Physician PD OCT PY 1991 VL 44 IS 4 BP 1144 EP & PG 0 WC Primary Health Care; Medicine, General & Internal SC General & Internal Medicine GA GJ517 UT WOS:A1991GJ51700007 PM 1927832 ER PT J AU STRATTON, RF LEE, B RAMIREZ, F AF STRATTON, RF LEE, B RAMIREZ, F TI MARSHALL SYNDROME SO AMERICAN JOURNAL OF MEDICAL GENETICS LA English DT Article DE MARSHALL SYNDROME; STICKLER SYNDROME; COLLAGEN; TYPE-II; COL2A1; VITREORETINAL DEGENERATION; SENSORY NEURAL DEAFNESS; ROBIN SEQUENCE ID STICKLER SYNDROME; WEISSENBACHER-ZWEYMULLER; ARTHRO-OPHTHALMOPATHY; FAMILIES; GENE AB We report on a mother and daughter with Marshall syndrome, with the Robin sequence present in the daughter. Results of our efforts to link this syndrome to a defect in type II collagen are reported. We compare and contrast Marshall syndrome with the Stickler syndrome, and propose that enough phenotypic overlap exists to suggest that they are probably allelic expressions of the same locus. C1 MT SINAI MED CTR,NEW YORK,NY 10029. RP STRATTON, RF (reprint author), WILFORD HALL USAF MED CTR,DEPT PEDIAT,LACKLAND AFB,TX 78236, USA. NR 34 TC 14 Z9 14 U1 0 U2 1 PU WILEY-LISS PI NEW YORK PA DIV JOHN WILEY & SONS INC 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0148-7299 J9 AM J MED GENET JI Am. J. Med. Genet. PD OCT 1 PY 1991 VL 41 IS 1 BP 35 EP 38 DI 10.1002/ajmg.1320410111 PG 4 WC Genetics & Heredity SC Genetics & Heredity GA GH552 UT WOS:A1991GH55200010 PM 1951461 ER PT J AU SATIN, AJ HANKINS, GDV YEOMANS, ER AF SATIN, AJ HANKINS, GDV YEOMANS, ER TI A PROSPECTIVE-STUDY OF 2 DOSING REGIMENS OF OXYTOCIN FOR THE INDUCTION OF LABOR IN PATIENTS WITH UNFAVORABLE CERVICES SO AMERICAN JOURNAL OF OBSTETRICS AND GYNECOLOGY LA English DT Article; Proceedings Paper CT 11TH ANNUAL MEETING OF THE SOC OF PERINATAL OBSTETRICIANS CY JAN 28-FEB 02, 1991 CL SAN FRANCISCO, CA SP SOC PERINATAL OBSTETRICIANS DE OXYTOCIN; INDUCTION OF LABOR; UNFAVORABLE CERVIX ID POST-TERM PREGNANCY; DYSFUNCTIONAL LABOR; PROLONGED PREGNANCY; AUGMENTATION; INTERVALS AB The ideal regimen for induction of labor with oxytocin with respect to the magnitude and frequency of dosage changes has not been defined. In spite of few data regarding labor induction with an unfavorable cervix, the initial dose recommended by the American College of Obstetricians and Gynecologists is lower than that of other commonly used protocols. Eighty patients with unfavorable cervices and unruptured membranes, without evidence of labor, were randomized to one of two protocols and met criteria for data analysis. Patients in both protocols were given an initial dose of oxytocin of 2 mU/min. Patients in protocol A (n = 32) then received incremental increases of oxytocin of 1 mU/min at 30-minute intervals, while those in protocol B (n = 48) received incremental increases of 2 mU/min at 15-minute intervals. Induction failures were higher among patients on protocol A (31% vs 8%, p < 0.05). Patients on protocol B had shorter times to delivery (mean = 10 hours 57 minutes vs 8 hours 3 minutes; p < 0.05). The number of operative deliveries were similar regardless of protocol. There were no significant differences (p = NS) among groups and protocols in maternal and fetal complications, cesarean section rate, and uterine hyperstimulation. In this population a more aggressive protocol may lead to fewer induction failures and shorter induction-to-delivery intervals. C1 WILFORD HALL USAF MED CTR,DEPT OBSTET & GYNECOL,LACKLAND AFB,TX 78236. NR 17 TC 23 Z9 23 U1 0 U2 0 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0002-9378 J9 AM J OBSTET GYNECOL JI Am. J. Obstet. Gynecol. PD OCT PY 1991 VL 165 IS 4 BP 980 EP 984 PN 1 PG 5 WC Obstetrics & Gynecology SC Obstetrics & Gynecology GA GM681 UT WOS:A1991GM68100036 PM 1951567 ER PT J AU KIRKHAM, DM AF KIRKHAM, DM TI WEBSTER,DANIEL THE COMPLETEST MAN - SHEWMAKER,KE SO AMERICAN STUDIES INTERNATIONAL LA English DT Book Review RP KIRKHAM, DM (reprint author), USAF ACAD,COLORADO SPRINGS,CO 80840, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU GEORGE WASHINGTON UNIV PI WASHINGTON PA AMERICAN STUDIES PROGRAM, WASHINGTON, DC 20052 SN 0003-1321 J9 AM STUD INT JI Am. Stud. Int. PD OCT PY 1991 VL 29 IS 2 BP 80 EP 81 PG 2 WC History SC History GA GJ882 UT WOS:A1991GJ88200009 ER PT J AU KIRKHAM, DM AF KIRKHAM, DM TI THE SELLING OF THE CONSTITUTIONAL CONVENTION - ALEXANDER,JK SO AMERICAN STUDIES INTERNATIONAL LA English DT Book Review RP KIRKHAM, DM (reprint author), USAF ACAD,COLORADO SPRINGS,CO 80840, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU GEORGE WASHINGTON UNIV PI WASHINGTON PA AMERICAN STUDIES PROGRAM, WASHINGTON, DC 20052 SN 0003-1321 J9 AM STUD INT JI Am. Stud. Int. PD OCT PY 1991 VL 29 IS 2 BP 86 EP 87 PG 2 WC History SC History GA GJ882 UT WOS:A1991GJ88200016 ER PT J AU KIRKHAM, DM AF KIRKHAM, DM TI THE BIRTH OF AMERICAN POLITICAL-THOUGHT - HOWARD,D SO AMERICAN STUDIES INTERNATIONAL LA English DT Book Review RP KIRKHAM, DM (reprint author), USAF ACAD,COLORADO SPRINGS,CO 80840, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU GEORGE WASHINGTON UNIV PI WASHINGTON PA AMERICAN STUDIES PROGRAM, WASHINGTON, DC 20052 SN 0003-1321 J9 AM STUD INT JI Am. Stud. Int. PD OCT PY 1991 VL 29 IS 2 BP 94 EP 95 PG 2 WC History SC History GA GJ882 UT WOS:A1991GJ88200024 ER PT J AU KIRKHAM, DM AF KIRKHAM, DM TI CREATING THE BILL-OF-RIGHTS - VEIT,HE, BOWLING,KR, BICKFORD,CB SO AMERICAN STUDIES INTERNATIONAL LA English DT Book Review RP KIRKHAM, DM (reprint author), USAF ACAD,COLORADO SPRINGS,CO 80840, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU GEORGE WASHINGTON UNIV PI WASHINGTON PA AMERICAN STUDIES PROGRAM, WASHINGTON, DC 20052 SN 0003-1321 J9 AM STUD INT JI Am. Stud. Int. PD OCT PY 1991 VL 29 IS 2 BP 98 EP 99 PG 2 WC History SC History GA GJ882 UT WOS:A1991GJ88200029 ER PT J AU ROMANOFF, ME ELLIS, JS AF ROMANOFF, ME ELLIS, JS TI BUPIVACAINE TOXICITY AFTER STELLATE GANGLION BLOCK SO ANESTHESIA AND ANALGESIA LA English DT Letter RP ROMANOFF, ME (reprint author), USAF,MED CTR,DEPT ANESTHESIOL,SGHSA,PAIN MANAGEMENT CLIN,WILFORD HALL,LACKLAND AFB,TX 78236, USA. NR 4 TC 0 Z9 0 U1 0 U2 0 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0003-2999 J9 ANESTH ANALG JI Anesth. Analg. PD OCT PY 1991 VL 73 IS 4 BP 505 EP 505 DI 10.1213/00000539-199110000-00031 PG 1 WC Anesthesiology SC Anesthesiology GA GG685 UT WOS:A1991GG68500031 PM 1897779 ER PT J AU GOETZ, DW JACOBSON, JM APALISKI, SJ REPPERGER, DW MARTIN, ME AF GOETZ, DW JACOBSON, JM APALISKI, SJ REPPERGER, DW MARTIN, ME TI OBJECTIVE ANTIHISTAMINE SIDE-EFFECTS ARE MITIGATED BY EVENING DOSING OF HYDROXYZINE SO ANNALS OF ALLERGY LA English DT Article ID REACTION-TIMES; TERFENADINE; PERFORMANCE; HISTAMINE; H-1 AB First-generation antihistamines have potency, pharmacokinetic, and cost advantages compared with nonsedating second-generation antihistamines. Bedtime dosing of hydroxyzine was investigated as a dosing strategy to minimize reaction time degradation and adverse subjective symptoms previously documented for hydroxyzine in divided doses. Hydroxyzine, 50 mg qhs, was compared with terfenadine, 60 mg bid, in this double-blind, placebo-controlled crossover study of 15 healthy, asymptomatic adults. Computer-based eye-hand reaction time tests of simple reaction time (SRT) and choice reaction time (CRT) were not statistically different among the three drugs. Drowsiness, dry mouth, and irritability were significant for hydroxyzine (P = .0001, .001 and .02, respectively) compared with terfenadine or placebo, but less than seen in a previous study of hydroxyzine, 25 mg bid. Symptom scores with terfenadine were comparable to placebo. Histamine skin test wheal and flare were both significantly and comparably suppressed by hydroxyzine and terfenadine (P = .0001). While wheal suppression by hydroxyzine was universal, four of the 15 subjects showed little or no suppression with terfenadine (P = .03). Although bedtime dosing of hydroxyzine did not eliminate subjective symptoms, it maintained skin H-1-receptor antagonism the following morning and alleviated the prolongation of reaction times previously reported with hydroxyzine in divided doses. The significant adverse subjective symptoms and psychomotor performance degradations caused by first-generation antihistamines can be mitigated by creative dosing schedules. C1 ARMSTRONG AEROSSP MED RES LABS,WRIGHT PATTERSON AFB,OH. RP GOETZ, DW (reprint author), WILFORD HALL USAF MED CTR,DEPT MED,SGHMMA,LACKLAND AFB,TX 78236, USA. NR 14 TC 39 Z9 39 U1 1 U2 2 PU AMER COLL ALLERGY ASTHMA IMMUNOLOGY PI ARLINGTON HTS PA 85 WEST ALGONQUIN RD SUITE 550, ARLINGTON HTS, IL 60005 SN 0003-4738 J9 ANN ALLERGY JI Ann. Allergy PD OCT PY 1991 VL 67 IS 4 BP 448 EP 454 PG 7 WC Allergy SC Allergy GA GM320 UT WOS:A1991GM32000014 PM 1683192 ER PT J AU BENJAMIN, B MAIR, EA AF BENJAMIN, B MAIR, EA TI CONGENITAL INTERARYTENOID WEB SO ARCHIVES OF OTOLARYNGOLOGY-HEAD & NECK SURGERY LA English DT Article ID LARYNGEAL WEBS AB Congenital interarytenoid web is a rare laryngeal anomaly whose distinctive feature is a band of tissue joining the medial surfaces of the arytenoids and restricting abduction of the vocal cords. It appears to arise from persistence of the embryonic membranous interarytenoid layers, which form the epithelial lamina of the fetal laryngeal sagittal cleft. This review of 16 cases seen in a 15-year period describes the clinical features, diagnostic evaluation, and management. In addition to the interarytenoid web, which is present to some degree in all patients, associated anomalous features may include subglottic stenosis, enlarged bulky arytenoids, and difficulty exposing the larynx and maintaining the airway during anesthesia and endoscopy. The association of these four features in this rare laryngeal anomaly has not been previously described. Diagnosis depends on direct laryngoscopy with particular attention to the posterior larynx. Tracheotomy may be required for 3 to 5 years as definitive corrective management has not been established. C1 ROYAL ALEXANDRA HOSP CHILDREN,SYDNEY,AUSTRALIA. WILFORD HALL USAF MED CTR,DEPT OTOLARYNGOL HEAD & NECK SURG,LACKLAND AFB,TX 78236. NR 15 TC 8 Z9 8 U1 0 U2 0 PU AMER MEDICAL ASSOC PI CHICAGO PA 515 N STATE ST, CHICAGO, IL 60610 SN 0886-4470 J9 ARCH OTOLARYNGOL JI Arch. Otolaryngol. Head Neck Surg. PD OCT PY 1991 VL 117 IS 10 BP 1118 EP 1122 PG 5 WC Otorhinolaryngology; Surgery SC Otorhinolaryngology; Surgery GA GJ143 UT WOS:A1991GJ14300010 PM 1910696 ER PT J AU HARGENS, AR WHALEN, RT WATENPAUGH, DE SCHWANDT, DF KROCK, LP AF HARGENS, AR WHALEN, RT WATENPAUGH, DE SCHWANDT, DF KROCK, LP TI LOWER-BODY NEGATIVE-PRESSURE TO PROVIDE LOAD BEARING IN SPACE SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article ID EXERCISE AB Presently, exercise protocols and equipment for spaceflight are unresolved, although recent calculations suggest that all exercise in space to date has lacked sufficient loads to maintain preflight musculoskeletal mass. We hypothesized that lower body negative pressure (LBNP) produces a footward force equal to the product of the pressure differential and body cross-sectional area at the waist seal. Twelve male volunteers weighing 67.6-86.9 kg were sealed at the superior iliac crest in upright and supine LBNP chambers. Neither configuration included a saddle, so that the force due to LBNP was transmitted to the feet of our subjects. Each subject was exposed to 10 mm Hg increments of LBNP up to 70 mm Hg (standing) or to 50-100 mm Hg (supine), depending upon individual tolerance. Static reaction force was measured at each LBNP level for approximately 1-2 min. An additional static force approximately equivalent to 1% Earth body weight was generated against the feet by each mm Hg of LBNP either during upright standing or supine posture. Furthermore, the forces measured during LBNP agreed well with forces calculated from the cross-sectional areas of our subjects' waists. These results indicate that exercise in microgravity against 100 mm Hg LBNP could produce static and inertial forces similar in magnitude to those occurring on Earth. This gravity-independent technique may help maintain the musculoskeletal and cardiovascular systems of crewmembers during prolonged exposure to microgravity. C1 USAF,SCH AEROSP MED,DIV CREW TECHNOL,BROOKS AFB,TX 78235. RP HARGENS, AR (reprint author), NASA,AMES RES CTR,DIV LIFE SCI 23911,MOFFETT FIELD,CA 94035, USA. NR 18 TC 34 Z9 34 U1 0 U2 0 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD OCT PY 1991 VL 62 IS 10 BP 934 EP 937 PG 4 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA GG489 UT WOS:A1991GG48900003 PM 1764003 ER PT J AU HANCOCK, RD HEDMAN, PO KRAMER, SK AF HANCOCK, RD HEDMAN, PO KRAMER, SK TI COHERENT ANTI-STOKES-RAMAN SPECTROSCOPY (CARS) MEASUREMENTS IN COAL-SEEDED FLAMES SO COMBUSTION AND FLAME LA English DT Article ID TEMPERATURE-MEASUREMENTS; THERMOMETRY; COMBUSTION; BREAKDOWN; LASER AB Coherent anti-Stokes Raman spectroscopy (CARS) is a laser diagnostic technique that can be used to determine temperature and major species concentrations in harsh combustion environments. CARS has been successfully applied to clean gas flames, but much less attention has been given to particle-laden flames like those encountered in industrial coal burners. Typically, experimental CARS spectra are obtained from a flame and then compared with theoretical CARS spectra to determine temperature and species concentration information. This information is more difficult to acquire in coal flames due to background and nonresonant interferences. These interferences alter the shape and intensity of the CARS signal, thus making analysis with unmodified version of standard CARS fitting codes impractical. Nitrogen temperature measurements were obtained in heavily coal-seeded natural gas/air flames. Two different coals and several coal feed rates and stoichiometries were investigated in order to determine possible limits associated with making CARS measurements in coal flames. Carbon monoxide signals were observed in some of the fuel-rich coal-seed flames but the signals were weak and of poor quality, therefore, quantitative results are not reported. Temperature measurements were obtained with nonresonant background levels caused by particle induced breakdown as high as 100% of the peak N2 resonant signal. CARS N2 temperatures generally agreed with equilibrium code calculations. C1 BRIGHAM YOUNG UNIV,DEPT CHEM ENGN,PROVO,UT 84602. RP HANCOCK, RD (reprint author), WRIGHT LAB,AERO PROPULS & POWER DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 25 TC 9 Z9 9 U1 1 U2 5 PU ELSEVIER SCIENCE INC PI NEW YORK PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 SN 0010-2180 J9 COMBUST FLAME JI Combust. Flame PD OCT PY 1991 VL 87 IS 1 BP 77 EP 88 DI 10.1016/0010-2180(91)90028-A PG 12 WC Thermodynamics; Energy & Fuels; Engineering, Multidisciplinary; Engineering, Chemical; Engineering, Mechanical SC Thermodynamics; Energy & Fuels; Engineering GA GL804 UT WOS:A1991GL80400007 ER PT J AU ORME, DR BOSWELL, D AF ORME, DR BOSWELL, D TI THE PRE-INTAKE DROP-OUT AT A COMMUNITY MENTAL-HEALTH-CENTER SO COMMUNITY MENTAL HEALTH JOURNAL LA English DT Article RP ORME, DR (reprint author), USAF,PSC BOX 1849,APO,NEW YORK,NY 09179, USA. NR 13 TC 21 Z9 22 U1 1 U2 3 PU HUMAN SCI PRESS INC PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013-1578 SN 0010-3853 J9 COMMUNITY MENT HLT J JI Community Ment. Health J. PD OCT PY 1991 VL 27 IS 5 BP 375 EP 379 DI 10.1007/BF00752387 PG 5 WC Health Policy & Services; Public, Environmental & Occupational Health; Psychiatry SC Health Care Sciences & Services; Public, Environmental & Occupational Health; Psychiatry GA GH425 UT WOS:A1991GH42500006 PM 1934997 ER PT J AU KLAUENBERG, BJ MERRITT, JH AF KLAUENBERG, BJ MERRITT, JH TI AD-HOMINEM COMMENTARIES DO NOT BELONG IN SCIENTIFIC JOURNALS SO HEALTH PHYSICS LA English DT Letter RP KLAUENBERG, BJ (reprint author), ARMSTRONG LAB, DIV DIRECTED ENERGY, RADIOFREQUENCY RADIAT BRANCH, BROOKS AFB, SAN ANTONIO, TX 78235 USA. NR 3 TC 0 Z9 0 U1 0 U2 1 PU LIPPINCOTT WILLIAMS & WILKINS PI PHILADELPHIA PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA SN 0017-9078 EI 1538-5159 J9 HEALTH PHYS JI Health Phys. PD OCT PY 1991 VL 61 IS 4 BP 576 EP 576 PG 1 WC Environmental Sciences; Public, Environmental & Occupational Health; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging SC Environmental Sciences & Ecology; Public, Environmental & Occupational Health; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging GA GH834 UT WOS:A1991GH83400018 PM 1917498 ER PT J AU SCHUERMEYER, FL SHUR, M GRIDER, DE AF SCHUERMEYER, FL SHUR, M GRIDER, DE TI GATE CURRENT IN SELF-ALIGNED N-CHANNEL AND P-CHANNEL PSEUDOMORPHIC HETEROSTRUCTURE FIELD-EFFECT TRANSISTORS SO IEEE ELECTRON DEVICE LETTERS LA English DT Article ID NEGATIVE TRANSCONDUCTANCE; MECHANISM AB We report the results of the study of the gate leakage current in n-channel and p-channel self-aligned pseudomorphic HIGFET's. We demonstrate that in these devices the gate leakage current is practically independent of the gate length. This means that the gate current primarily flows into the source and drain contacts through small sections of the channel near the contacts. At large gate voltages, the gate current is limited by the band discontinuities at the heterointerface, similar to the gate current in non-self-aligned heterostructure field-effect transistors. RP SCHUERMEYER, FL (reprint author), USAF,ELECTR TECHNOL DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. RI Shur, Michael/A-4374-2016 OI Shur, Michael/0000-0003-0976-6232 NR 10 TC 10 Z9 10 U1 0 U2 1 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0741-3106 J9 IEEE ELECTR DEVICE L JI IEEE Electron Device Lett. PD OCT PY 1991 VL 12 IS 10 BP 571 EP 573 DI 10.1109/55.119192 PG 3 WC Engineering, Electrical & Electronic SC Engineering GA GG774 UT WOS:A1991GG77400020 ER PT J AU KLOBUCHAR, JA AF KLOBUCHAR, JA TI 2 GENERATIONS OF PROGRESS IN IONOSPHERIC RESEARCH SO INDIAN JOURNAL OF RADIO & SPACE PHYSICS LA English DT Article; Proceedings Paper CT INTERNATIONAL SYMP ON OPTICAL AND RADIO REMOTE SENSING OF THE ATMOSPHERIC ENVIRONMENT CY OCT 24-26, 1990 CL NEW DELHI, INDIA AB Many of the great advances in ionospheric research in the last 40 years have come about because of improvements in technology, especially through modem electronics and optical and computational advances. The advent of the space age, with satellite and rocket capability, has provided a major improvement in our ability to measure the upper atmosphere and the ionosphere. The construction of realistic theoretical models of the upper atmosphere and the ionosphere have made great strides in our understanding of the relative effects of various driving forces on the ionosphere. These are discussed in some detail along with prospects for future breakthroughs in technology which will benefit ionospheric research. One particularly significant example to be described in detail is the improvement of knowledge of the now well known equatorial anomaly, briefly described in S.K. Mitra's book [The Upper Atmosphere (The Asiatic Society, Calcutta, India), 1947, 19521. During the course of the 1950s, and even to the present date, the anomaly in F2-region electron density has been an active area of study, with much of this research being done by Indian scientists. Despite the many experimental results from both ground-based and satellite-borne sounders, and total electron content measurements, clearly showing the variability of the equatorial anomaly, it was not until the 1980s when a model of the low latitude ionosphere derived from first principles was able to reasonably well reproduce the observations discussed in Mitra's book. Other examples of areas still needing additional experimental and theoretical research are also described. RP KLOBUCHAR, JA (reprint author), USAF,GEOPHYS LAB,DIV IONOSPHER PHYS,BEDFORD,MA 01731, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU COUNCIL SCIENTIFIC INDUSTRIAL RESEARCH PI NEW DELHI PA PUBL & INFO DIRECTORATE, NEW DELHI 110012, INDIA SN 0367-8393 J9 INDIAN J RADIO SPACE JI Indian J. Radio Space Phys. PD OCT PY 1991 VL 20 IS 5 BP 351 EP 355 PG 5 WC Astronomy & Astrophysics; Meteorology & Atmospheric Sciences SC Astronomy & Astrophysics; Meteorology & Atmospheric Sciences GA GK855 UT WOS:A1991GK85500006 ER PT J AU MELTON, DW LOWE, BF PERRAM, GP ROH, WB AF MELTON, DW LOWE, BF PERRAM, GP ROH, WB TI SINGLET MOLECULAR-OXYGEN EXCITATION OF BRF B3-PI(O+) SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID VIBRATIONAL ENERGY-TRANSFER; SPECTRUM; SPECTROSCOPY; CONSTANTS; FLUORINE; EMISSION; STATES AB The excitation of BrF B3-PI(0+) by metastable singlet oxygen, O2(a1-DELTA,b1-SIGMA), has been studied under steady-state conditions in a flow tube reactor. The chemiluminescence from BrF(B) indicates a nonthermal vibrational distribution that peaks at upsilon' = 3 and a ratio of BrF(B) to O2(b1-SIGMA-g+) concentration of about 5 x 10(-4). The emission is attributed to three-body recombination of bromine and fluorine atoms with a rate coefficient of approximately 7 x 10(-31) cm6/molecule2 s and a single-step energy-transfer collision with O2(b1-SIGMA). The rate coefficients for quenching of O2(b1-SIGMA) by CO2, CF4, Br2, and Br have been determined from a linear Stern-Volmer analysis as 3.0, 0.027, 9.7, and 140 x 10(-13) cm3/molecule s, respectively. RP MELTON, DW (reprint author), USAF,INST TECHNOL,DEPT ENGN PHYS,WRIGHT PATTERSON AFB,OH 45433, USA. NR 40 TC 4 Z9 4 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD OCT 1 PY 1991 VL 95 IS 7 BP 4933 EP 4939 DI 10.1063/1.461709 PG 7 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA GH356 UT WOS:A1991GH35600021 ER PT J AU HOFMANN, GE SCOTT, RT BERGH, PA DELIGDISCH, L AF HOFMANN, GE SCOTT, RT BERGH, PA DELIGDISCH, L TI IMMUNOHISTOCHEMICAL LOCALIZATION OF EPIDERMAL GROWTH-FACTOR IN HUMAN ENDOMETRIUM, DECIDUA, AND PLACENTA SO JOURNAL OF CLINICAL ENDOCRINOLOGY & METABOLISM LA English DT Article ID HUMAN CHORIONIC-GONADOTROPIN; MESSENGER RIBONUCLEIC-ACID; FACTOR-RECEPTOR; FACTOR PRECURSOR; FETAL MEMBRANES; BINDING-SITES; PREGNANCY; CELLS; DIFFERENTIATION; SECRETION AB Epidermal growth factor (EGF) was localized immunohistochemically in human endometrium throughout the menstrual cycle, in gestational decidua, and in first, second, and third trimester placenta using two polyclonal antihuman EGF antisera. In proliferative phase endometrium, moderate EGF immunostaining was localized to the cytoplasm of stromal cells, with absent to light staining of glandular epithelium. In the secretory phase, EGF immunostaining was intense and localized predominantly to stromal cells, particularly those surrounding spiral arterioles. There was absent to light EGF immunostaining within epithelial cells; however, there was no staining of subnuclear vacuoles. In addition, the luminal surface of exhausted secretory glands demonstrated moderate EGF immunostaining. In gestational decidua, EGF immunostaining was light to moderate in the stromal cells, but was intense in the surface epithelium. Intense EGF immunostaining was noted in the syncytiotrophoblast layer of first trimester placenta, with light to moderate staining of the cytotrophoblast. Immunostaining decreased in both layers of trophoblast as pregnancy progressed. Immunoreactive EGF is found in endometrium and trophoblast and may have a physiological role in endometrial and placental function. C1 USAF, DEPT OBSTET & GYNECOL, LACKLAND AFB, TX 78236 USA. RP HOFMANN, GE (reprint author), MT SINAI MED CTR, DEPT OBSTET & GYNECOL, BOX 1175, 1 GUSTAVE L LEVY PL, NEW YORK, NY 10029 USA. NR 36 TC 83 Z9 88 U1 0 U2 1 PU ENDOCRINE SOC PI CHEVY CHASE PA 8401 CONNECTICUT AVE, SUITE 900, CHEVY CHASE, MD 20815-5817 USA SN 0021-972X J9 J CLIN ENDOCR METAB JI J. Clin. Endocrinol. Metab. PD OCT PY 1991 VL 73 IS 4 BP 882 EP 887 PG 6 WC Endocrinology & Metabolism SC Endocrinology & Metabolism GA GF684 UT WOS:A1991GF68400031 PM 1890159 ER PT J AU COOLIDGE, MB MARLIN, JE STEWART, JJP AF COOLIDGE, MB MARLIN, JE STEWART, JJP TI CALCULATIONS OF MOLECULAR VIBRATIONAL FREQUENCIES USING SEMIEMPIRICAL METHODS SO JOURNAL OF COMPUTATIONAL CHEMISTRY LA English DT Article ID GROUND-STATES; THEORETICAL CHARACTERIZATION; MINDO-3 CALCULATIONS; ETHYLENE-OXIDE; MNDO METHOD; PARAMETERS; SULFIDES AB MINDO/3, MNDO, AM1, and PM3 calculations of molecular vibrational frequencies are reported for 61 molecules. All techniques were applied to both well-behaved and badly behaved systems. Overall, MINDO/3 and MNDO were found to contain rather large errors whereas AM1 and PM3 were relatively accurate. Since no technique does well for all molecules, the technique used should be chosen based on the molecular vibration of interest. In general, AM1 and PM3 together provide fairly accurate results. RP COOLIDGE, MB (reprint author), USAF ACAD,FRANK J SEILER RES LAB,COLORADO SPRINGS,CO 80840, USA. NR 27 TC 75 Z9 75 U1 0 U2 5 PU JOHN WILEY & SONS INC PI NEW YORK PA 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0192-8651 J9 J COMPUT CHEM JI J. Comput. Chem. PD OCT PY 1991 VL 12 IS 8 BP 948 EP 952 DI 10.1002/jcc.540120807 PG 5 WC Chemistry, Multidisciplinary SC Chemistry GA GH442 UT WOS:A1991GH44200006 ER PT J AU LUCEY, DR MELCHER, GP HENDRIX, CW ZAJAC, RA GOETZ, DW BUTZIN, CA CLERICI, M WARNER, RD ABBADESSA, S HALL, K JASO, R WOOLFORD, B MILLER, S STOCKS, NI SALINAS, CM WOLFE, WH SHEARER, GM BOSWELL, RN AF LUCEY, DR MELCHER, GP HENDRIX, CW ZAJAC, RA GOETZ, DW BUTZIN, CA CLERICI, M WARNER, RD ABBADESSA, S HALL, K JASO, R WOOLFORD, B MILLER, S STOCKS, NI SALINAS, CM WOLFE, WH SHEARER, GM BOSWELL, RN TI HUMAN-IMMUNODEFICIENCY-VIRUS INFECTION IN THE UNITED-STATES AIR-FORCE - SEROCONVERSIONS, CLINICAL STAGING, AND ASSESSMENT OF A T HELPER-CELL FUNCTIONAL ASSAY TO PREDICT CHANGE IN CD4+ T-CELL COUNTS SO JOURNAL OF INFECTIOUS DISEASES LA English DT Article ID PNEUMOCYSTIS-CARINII PNEUMONIA; SEROPOSITIVE HOMOSEXUAL MEN; HIV-INFECTION; IMMUNE-DEFICIENCY; LYMPHOCYTE COUNTS; AIDS; TYPE-1; COHORT; ARMY; ANTIBODIES AB As of January 1990, 933 persons with human immunodeficiency virus type 1 (HIV-1) infection were clinically evaluated at Wilford Hall US Air Force (USAF) Medical Center. The Walter Reed HIV staging system was used in these evaluations to describe disease status and progression. Most persons were diagnosed through mandatory HIV testing in the USAF and were asymptomatic at the time of diagnosis. As of May 1990, 161 HIV-positive seroconverters (estimated overall seroconversion rate of 0.156/1000 person-years between 30 June 1988 and 1 July 1990) had been identified among active-duty USAF personnel, as they had previously tested negative for antibody to HIV. Men constitute 95% of the USAF HIV-positive population. An in vitro T helper cell functional assay was assessed to predict rate of CD4+ T cell decline over the subsequent year (mean, 15 months) in patients with > 200 CD4+ T cells/mm3. This assay may prove useful for prognostication and comparisons of patients in clinical trials of anti-HIV interventions. C1 WILFORD HALL USAF MED CTR,DEPT MED,LACKLAND AFB,TX 78236. WILFORD HALL USAF MED CTR,CLIN INVEST DIRECTORATE,LACKLAND AFB,TX 78236. ARMSTRONG LAB,EPIDEMIOL RES DIV,DIV HUMAN SYST,BROOKS AFB,TX. NCI,EXPTL IMMUNOL BRANCH,BETHESDA,MD 20892. RI Hendrix, Craig/G-4182-2014 OI Hendrix, Craig/0000-0002-5696-8665 NR 53 TC 83 Z9 83 U1 1 U2 3 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0022-1899 J9 J INFECT DIS JI J. Infect. Dis. PD OCT PY 1991 VL 164 IS 4 BP 631 EP 637 PG 7 WC Immunology; Infectious Diseases; Microbiology SC Immunology; Infectious Diseases; Microbiology GA GF805 UT WOS:A1991GF80500001 PM 1680134 ER PT J AU COOPER, TW AF COOPER, TW TI SECRETORY DIARRHEA AND CANDIDAL OVERGROWTH - CAUSE AND EFFECT SO JOURNAL OF INFECTIOUS DISEASES LA English DT Letter RP COOPER, TW (reprint author), WILFORD HALL USAF MED CTR,DEPT INFECT DIS,LACKLAND AFB,TX 78236, USA. NR 5 TC 2 Z9 2 U1 0 U2 0 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0022-1899 J9 J INFECT DIS JI J. Infect. Dis. PD OCT PY 1991 VL 164 IS 4 BP 823 EP 824 PG 2 WC Immunology; Infectious Diseases; Microbiology SC Immunology; Infectious Diseases; Microbiology GA GF805 UT WOS:A1991GF80500041 PM 1894948 ER PT J AU MIGLIONICO, C STEIN, C MURR, LE AF MIGLIONICO, C STEIN, C MURR, LE TI EFFECTS OF SPACE ENVIRONMENT ON STRUCTURAL-MATERIALS - A PRELIMINARY-STUDY AND DEVELOPMENT OF MATERIALS CHARACTERIZATION PROTOCOLS SO JOURNAL OF MATERIALS SCIENCE LA English DT Article AB A preliminary study of materials exposed in space in a low-earth orbit for nearly 6 years (in the NASA Long-Duration Exposure Facility) has revealed a wide range of micrometeorite or microparticle impact craters ranging in size from 1-100-mu-m diameter, debris particles from adjacent and distant materials systems, reaction products and other growth features on the specimen surfaces, and related phenomena. The exposed-surface features included fine-grained and nearly amorphous materials as well as single-crystal particles. A replication-type, lift-off technique was developed to remove reaction products and debris from the specimen surfaces in order to isolate them from the background substrate without creating microchemical or microstructural artefacts or alterations. This resulted in surface features resting on a carbon support film which was virtually invisible to observation by electron microscopy and non-dispersive X-ray analysis. Characterization of these surface features involved observations by optical metallography, scanning electron microscopy, transmission electron microscopy, energy-dispersive X-ray analysis; including an analytical transmission electron microscope with a STEM attachment. The results illustrate a wide variety of materials phenomena which must be addressed in the evaluation of materials exposure in space, and the formidable materials characterization effort which will be necessary to understand these features. C1 UNIV TEXAS,DEPT MET & MAT ENGN,EL PASO,TX 79968. RP MIGLIONICO, C (reprint author), USAF,SYST COMMAND,PHILLIPS LAB,KIRTLAND AFB,NM 87117, USA. OI Murr, Lawrence/0000-0001-5942-8376 NR 5 TC 6 Z9 6 U1 0 U2 1 PU CHAPMAN HALL LTD PI LONDON PA 2-6 BOUNDARY ROW, LONDON, ENGLAND SE1 8HN SN 0022-2461 J9 J MATER SCI JI J. Mater. Sci. PD OCT 1 PY 1991 VL 26 IS 19 BP 5134 EP 5142 DI 10.1007/BF01143203 PG 9 WC Materials Science, Multidisciplinary SC Materials Science GA GH993 UT WOS:A1991GH99300004 ER PT J AU MEILINGER, PS AF MEILINGER, PS TI THE 1ST AIR WAR, 1914-1918 - KENNETT,L SO JOURNAL OF MILITARY HISTORY LA English DT Book Review RP MEILINGER, PS (reprint author), USAF,WASHINGTON,DC 20330, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU VIRGINIA MILITARY INST PI LEXINGTON PA LEXINGTON, VA 24450 SN 0899-3718 J9 J MILITARY HIST JI J. Mil. Hist. PD OCT PY 1991 VL 55 IS 4 BP 543 EP 544 DI 10.2307/1985779 PG 2 WC History SC History GA GK010 UT WOS:A1991GK01000017 ER PT J AU TREBILCOCK, CE EVANS, DB AF TREBILCOCK, CE EVANS, DB TI A 2-STAGE IMPRESSION TECHNIQUE FOR THE INDIRECT FABRICATION OF MULTIPLE CAST DOWEL AND CORES SO JOURNAL OF PROSTHETIC DENTISTRY LA English DT Article AB Making an accurate impression of root canals prepared for cast dowel and cores can be impeded by the number of teeth involved and the working time of the impression material. These factors aside, the technique described can be used to obtain a detailed full-arch impression that precisely captures remaining tooth structure and all canal spaces. The two-stage technique involves first fitting tapered plastic sprues and making individual canal impressions. A full-arch pickup impression is then made to capture the individual canals. This simple and easily correctable procedure ensures an accurate master cast on which dowels and cores can be indirectly made. C1 WILFORD HALL USAF MED CTR,DEPT GEN DENT,PROSTHODONT SECT,LACKLAND AFB,TX 78236. WILFORD HALL USAF MED CTR,DEPT PROSTHODONT,LACKLAND AFB,TX 78236. NR 6 TC 4 Z9 4 U1 0 U2 0 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0022-3913 J9 J PROSTHET DENT JI J. Prosthet. Dent. PD OCT PY 1991 VL 66 IS 4 BP 422 EP 425 DI 10.1016/0022-3913(91)90498-L PG 4 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA GH713 UT WOS:A1991GH71300002 PM 1791549 ER PT J AU REESE, JR AF REESE, JR TI THE SPIRIT OF ENTERPRISE - THE HISTORY OF PACIFIC-ENTERPRISES 1886-1989 - LITTLEFIELD,DR, THORNE,TC SO JOURNAL OF THE WEST LA English DT Book Review RP REESE, JR (reprint author), USAF ACAD,DEPT HIST,COLORADO SPRINGS,CO 80840, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU J WEST INC PI MANHATTAN PA P O BOX 1009 1531 YUMA, MANHATTAN, KS 66502 SN 0022-5169 J9 J WEST JI J. West PD OCT PY 1991 VL 30 IS 4 BP 106 EP 106 PG 1 WC History SC History GA GP570 UT WOS:A1991GP57000021 ER PT J AU Mantle, WJ Chang, WS AF Mantle, W. Joseph Chang, Won Soon TI Effective Thermal Conductivity of Sintered Metal Fibers SO JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER LA English DT Article AB For the effective thermal conductivity of dry and fluid-saturated sintered metal fibers, existing correlations are compared to experimental data, and a new empirical expression that compensates for the effect of the aspect ratio of the fibers is presented. It is shown that the present equation predicts the data with 10% deviation, while the Acton equation, which has been recommended in some references, has approximately 200% error. C1 [Mantle, W. Joseph; Chang, Won Soon] USAF, Wright Lab, Wright Patterson AFB, OH 45433 USA. RP Mantle, WJ (reprint author), USAF, Wright Lab, Wright Patterson AFB, OH 45433 USA. NR 13 TC 14 Z9 16 U1 1 U2 3 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA SN 0887-8722 J9 J THERMOPHYS HEAT TR JI J. Thermophys. Heat Transf. PD OCT-DEC PY 1991 VL 5 IS 4 BP 545 EP 549 DI 10.2514/3.299 PG 5 WC Thermodynamics; Engineering, Mechanical SC Thermodynamics; Engineering GA V24ZX UT WOS:000208449400014 ER PT J AU Zhong, JK Chow, LC Chang, WS AF Zhong, Jiakang Chow, Louis C. Chang, Won Soon TI Finite Element Eigenvalue Method for Solving Phase-Change Problems SO JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER LA English DT Article AB An eigenvalue method has been developed for solving multidimensional phase-change problems with the initial temperature at noncritical temperature. This method gives a closed-form analytical expression for the temperature field in terms of the eigenvalues and eigenfunctions of a characteristic equation derived from the generalized coordinate Lagrangian form of the heat conduction equation with phase change. The method yields reasonably accurate results with a coarse finite element mesh. It also has no critical time-step restrictions for stability. When long-time solutions are needed, excessive numerical computations are required by conventional finite difference or finite element methods due to the small time steps needed for time marching. With the present method, large time steps can be chosen to approximate the phase-change rate. In addition, only a few dominant eigenvalues and eigenfunctions are needed to achieve the same results obtained by using the complete set. These features result in very significant savings in computing time. For both the examples of one-dimensional solidification and solidification within a square, solutions can be obtained within a few iterations if appropriate relaxation factors are used. The results using the present method compare well with the exact solution for the one-dimensional problem and with a semianalytical similarity solution for the square. C1 [Zhong, Jiakang] Zhejiang Univ, Dept Mech Engn, Hangzhou 310003, Zhejiang, Peoples R China. [Chow, Louis C.] Univ Kentucky, Dept Mech Engn, Lexington, KY 40506 USA. [Chang, Won Soon] USAF, Wright Lab, Aero Prop & Power Lab, Wright Patterson AFB, OH 45433 USA. RP Zhong, JK (reprint author), Zhejiang Univ, Dept Mech Engn, Hangzhou 310003, Zhejiang, Peoples R China. FU Wright Research and Development Center [F33615-87-C-2777] FX This work is supported by the Wright Research and Development Center under Contract F33615-87-C-2777. Micheal Morgan is the contract monitor. NR 16 TC 2 Z9 2 U1 0 U2 2 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA SN 0887-8722 J9 J THERMOPHYS HEAT TR JI J. Thermophys. Heat Transf. PD OCT-DEC PY 1991 VL 5 IS 4 BP 589 EP 598 DI 10.2514/3.304 PG 10 WC Thermodynamics; Engineering, Mechanical SC Thermodynamics; Engineering GA V24ZX UT WOS:000208449400019 ER PT J AU SMITH, VC CAGGIANO, AV KNAUF, DG ALEXANDER, JA AF SMITH, VC CAGGIANO, AV KNAUF, DG ALEXANDER, JA TI THE BLALOCK-TAUSSIG SHUNT IN THE NEWBORN-INFANT SO JOURNAL OF THORACIC AND CARDIOVASCULAR SURGERY LA English DT Article ID CHILDREN; AGE AB Children with pulmonary oligemia often require palliation in the newborn period. The Blalock-Taussig shunt has been shown to offer adequate palliation in the older child, but its use in the newborn period remains controversial. A retrospective review of 51 neonates younger than age 2 weeks undergoing a Blalock-Taussig shunt (or modification) was performed. The operative mortality rate was 5.8%. Six children (15.4%) required reoperation in the first year of life for inadequate shunt function. The modification with interposition grafts necessitated reoperation more often than shunts performed with the subclavian artery. C1 WILFORD HALL USAF MED CTR,SAN ANTONIO,TX. UNIV FLORIDA,SHANDS HOSP,GAINESVILLE,FL 32611. NR 11 TC 9 Z9 9 U1 0 U2 0 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0022-5223 J9 J THORAC CARDIOV SUR JI J. Thorac. Cardiovasc. Surg. PD OCT PY 1991 VL 102 IS 4 BP 602 EP 605 PG 4 WC Cardiac & Cardiovascular Systems; Respiratory System; Surgery SC Cardiovascular System & Cardiology; Respiratory System; Surgery GA GK139 UT WOS:A1991GK13900017 PM 1717795 ER PT J AU BALDI, KA AF BALDI, KA TI AN OVERVIEW OF PHYSICAL-FITNESS OF FEMALE CADETS AT THE MILITARY ACADEMIES SO MILITARY MEDICINE LA English DT Review RP BALDI, KA (reprint author), USAF ACAD,COLORADO SPRINGS,CO 80840, USA. NR 0 TC 3 Z9 3 U1 0 U2 0 PU ASSN MILITARY SURG US PI BETHESDA PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 SN 0026-4075 J9 MIL MED JI Milit. Med. PD OCT PY 1991 VL 156 IS 10 BP 537 EP 539 PG 3 WC Medicine, General & Internal SC General & Internal Medicine GA GK669 UT WOS:A1991GK66900016 PM 1749498 ER PT J AU MAARTENSE, I SARKAR, AK KOZLOWSKI, G AF MAARTENSE, I SARKAR, AK KOZLOWSKI, G TI EFFECTS OF QUENCHING ON THE SUPERCONDUCTIVE PROPERTIES OF THE YBA2CU4O8 (124)-SYSTEM SO PHYSICA C LA English DT Article ID OXYGEN; TC AB Samples of YBa2Cu4O8 (124) sintered and slowly cooled in oxygen at ambient pressure were quenched from 400, 600 and 800-degrees-C. AC susceptibility measurements show that the superconductive transition of the 124 granular phase remains close to T(c) = 81 K after quenching. The bulk, intergranular transition shifts to lower temperature as the quenching temperature is raised. The data are consistent with the presence of a small amount of off-stoichiometric 124 material in the grain boundaries having a T(c) that is sensitive to quench-induced oxygen deficiency. Our interpretation differs from the one given by Graebner et al. (Physica C 173 (1991) 135) but it is supported by their data. C1 WRIGHT LAB,AERO PROPULS & POWER DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. UNIV DAYTON,RES INST,DAYTON,OH 45469. RP MAARTENSE, I (reprint author), WRIGHT LAB,MAT DIRECTORATE,WL MLPO,WRIGHT PATTERSON AFB,OH 45433, USA. NR 9 TC 9 Z9 9 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4534 J9 PHYSICA C JI Physica C PD OCT 1 PY 1991 VL 181 IS 1-3 BP 25 EP 29 DI 10.1016/0921-4534(91)90330-2 PG 5 WC Physics, Applied SC Physics GA GL392 UT WOS:A1991GL39200004 ER PT J AU BAUM, CE ROTHWELL, EJ CHEN, KM NYQUIST, DP AF BAUM, CE ROTHWELL, EJ CHEN, KM NYQUIST, DP TI THE SINGULARITY EXPANSION METHOD AND ITS APPLICATION TO TARGET IDENTIFICATION SO PROCEEDINGS OF THE IEEE LA English DT Article ID OF-FUNCTIONS METHOD; MULTIPLE DATA SETS; RADAR TARGET; E-PULSE; TRANSIENT DATA; PRONYS METHOD; RESIDUE EXTRACTION; POLE EXTRACTION; K-PULSE; DISCRIMINATION AB The singularity expansion method (SEM) for quantifying the transient electromagnetic scattering from targets illuminated by pulsed EM radiation is reviewed. SEM representations for both induced currents and scattered fields are presented. Natural-resonance-based target identification schemes, based upon the SEM, are described. Various techniques for the extraction of natural-resonance modes from measured transient response waveforms are reviewed. Discriminant waveforms for target identification, synthesized-based upon the complex natural-resonance frequencies of the relevant targets, are exposed. Particular attention is given to the aspect-independent (extinction) E-pulse and (single-mode) S-pulse discriminant waveforms which, when convolved with the late-time pulse response of a matched target, produce null or mono-mode responses, respectively, through natural-mode annihilation. Extensive experimental results for practical target models are included to validate the E-pulse target discrimination technique. Finally, anticipated future extensions and areas requiring additional research are identified. C1 MICHIGAN STATE UNIV, DEPT ELECT ENGN, E LANSING, MI 48824 USA. RP USAF, PHILLIPS LAB, KIRTLAND AFB, NM 87117 USA. NR 64 TC 168 Z9 173 U1 0 U2 3 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA SN 0018-9219 EI 1558-2256 J9 P IEEE JI Proc. IEEE PD OCT PY 1991 VL 79 IS 10 BP 1481 EP 1492 DI 10.1109/5.104223 PG 12 WC Engineering, Electrical & Electronic SC Engineering GA GU211 UT WOS:A1991GU21100016 ER PT J AU BHOWMICK, SK KASTE, SC AF BHOWMICK, SK KASTE, SC TI MULTIPLE EPIPHYSEAL DYSPLASIA MISDIAGNOSED AS BIOINACTIVE GROWTH-HORMONE DISORDER SO SOUTHERN MEDICAL JOURNAL LA English DT Article C1 USAF,DEPT PEDIAT ENDOCRINOL,KEESLER AFB,MS 39534. USAF,DEPT METAB,KEESLER AFB,MS 39534. USAF,DEPT PEDIAT RADIOL,KEESLER AFB,MS 39534. NR 11 TC 3 Z9 3 U1 0 U2 0 PU SOUTHERN MEDICAL ASSN PI BIRMINGHAM PA 35 LAKESHORE DR PO BOX 190088, BIRMINGHAM, AL 35219 SN 0038-4348 J9 SOUTHERN MED J JI South.Med.J. PD OCT PY 1991 VL 84 IS 10 BP 1259 EP 1262 DI 10.1097/00007611-199110000-00023 PG 4 WC Medicine, General & Internal SC General & Internal Medicine GA GM130 UT WOS:A1991GM13000023 PM 1925729 ER PT J AU NICHOLAS, T HARITOS, GK HASTIE, RL HARMS, K AF NICHOLAS, T HARITOS, GK HASTIE, RL HARMS, K TI THE EFFECTS OF OVERLOADS ON SUSTAINED-LOAD CRACK-GROWTH IN A NICKEL-BASE SUPERALLOY .1. ANALYSIS SO THEORETICAL AND APPLIED FRACTURE MECHANICS LA English DT Article AB Analytical procedures are presented for predicting the retardation effects of cyclic overloads on the sustained load crack growth rate in Inconel 718 at 649-degrees-C. The Wheeler model is used in a crack growth computer program, CRACKS, by representing sustained load by equivalent fatigue cycles per unit time and an equivalent stress ratio, R. A new model, the exponential overload (EXPOL) model, is developed based on the concept of a crack growing at a retarded rate through an overload plastic zone. The analytical procedures use a minimum of empirical constants and are capable of accurately representing the time-dependent sustained load crack growth behavior with single or multiple cyclic overloads. C1 USAF,AFOSR,BOLLING AFB,WASHINGTON,DC 20330. USAF ACAD,COLORADO SPRINGS,CO 80840. USAF,WRDC,AEROPROP & POWER LAB,WRIGHT PATTERSON AFB,OH 45433. RP NICHOLAS, T (reprint author), WRDC,MAT LAB,WRIGHT PATTERSON AFB,OH 45433, USA. NR 15 TC 5 Z9 5 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0167-8442 J9 THEOR APPL FRACT MEC JI Theor. Appl. Fract. Mech. PD OCT PY 1991 VL 16 IS 1 BP 35 EP 49 DI 10.1016/0167-8442(91)90039-M PG 15 WC Engineering, Mechanical; Mechanics SC Engineering; Mechanics GA GH305 UT WOS:A1991GH30500004 ER PT J AU NICHOLAS, T HARITOS, GK HASTIE, RL HARMS, K AF NICHOLAS, T HARITOS, GK HASTIE, RL HARMS, K TI THE EFFECTS OF OVERLOADS ON SUSTAINED-LOAD CRACK-GROWTH IN A NICKEL-BASE SUPERALLOY .2. EXPERIMENTS SO THEORETICAL AND APPLIED FRACTURE MECHANICS LA English DT Article ID FATIGUE AB Results are presented for experimentally observed crack growth behavior in Inconel 718 at 649-degrees-C under sustained load with periodically applied overloads. Overload magnitudes of 20 and 50 percent are applied for durations of one minute or one hour. Retardation of crack growth observed after each overload application is found to be independent of duration of overload and is characterized by a delay time. The delay time, the time required to resume steady state growth rate, increases with overload magnitude and decreases with increase in sustained load value of K when the overload is applied. A crack jump of approximately 0.38 mm is observed in these experiments each time an overload is applied and appears to be independent of overload magnitude and K within experimental scatter. C1 USAF,AFOSR,BOLLING AFB,WASHINGTON,DC 20330. USAF ACAD,COLORADO SPRINGS,CO 80840. USAF,WRDC,AEROPROP & POWER LAB,WRIGHT PATTERSON AFB,OH 45433. RP NICHOLAS, T (reprint author), WRDC,MAT LAB,WRIGHT PATTERSON AFB,OH 45433, USA. NR 23 TC 5 Z9 5 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0167-8442 J9 THEOR APPL FRACT MEC JI Theor. Appl. Fract. Mech. PD OCT PY 1991 VL 16 IS 1 BP 51 EP 62 DI 10.1016/0167-8442(91)90040-Q PG 12 WC Engineering, Mechanical; Mechanics SC Engineering; Mechanics GA GH305 UT WOS:A1991GH30500005 ER PT J AU ARCHIBALD, TG MALIK, AA BAUM, K AF ARCHIBALD, TG MALIK, AA BAUM, K TI THERMALLY STABLE ACETYLENIC ADAMANTANE POLYMERS SO MACROMOLECULES LA English DT Article AB 1,3-Diethynyladamantane (4) was synthesized from adamantane in 67% yield and polymerized thermally at 210-degrees-C or in the presence of catalysts at 160-190-degrees-C. After postcure at 320-degrees-C, the resulting clear thermoset polymer exhibited an onset of major decomposition at 476-degrees-C in air and 475-degrees-C in helium (TGA). The polymer did not show thermal transitions in the DSC between 25 and 450-degrees-C, but exhibited a weak glass transition in DMTA at 260-degrees-C. Soluble oligomers were prepared by either thermal or bis-(benzonitrile)palladium chloride catalyzed oligomerization and characterized by thermal analysis and molecular weight determinations. The catalyzed oligomers contained cyclotrimerized acetylene groups, whereas thermal oligomers contained linear polyene structures. 1-Ethynyladamantane (6), which formed no thermal homopolymer, formed copolymers with 4. C1 FLUOROCHEM INC,680 S AYON AVE,AZUSA,CA 91702. USAF,MAT LAB,MLBP,WRDC,WRIGHT LABS,WRIGHT PATTERSON AFB,OH 45433. NR 23 TC 48 Z9 50 U1 3 U2 6 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0024-9297 J9 MACROMOLECULES JI Macromolecules PD SEP 16 PY 1991 VL 24 IS 19 BP 5261 EP 5265 DI 10.1021/ma00019a005 PG 5 WC Polymer Science SC Polymer Science GA GF730 UT WOS:A1991GF73000005 ER PT J AU MALIK, AA ARCHIBALD, TG BAUM, K UNROE, MR AF MALIK, AA ARCHIBALD, TG BAUM, K UNROE, MR TI NEW HIGH-TEMPERATURE POLYMERS BASED ON DIAMANTANE SO MACROMOLECULES LA English DT Article AB 1,4-,4,9-, and 1,6-diethynyldiamantanes (3a-c) were prepared from diamantane and polymerized at 250-275-degrees-C to give clear thermoset resins that showed onsets of degradation between 518 and 525-degrees-C in air or helium (TGA). Nickel(II) acetylacetonate or tetrakis(triphenylphosphine)palladium catalysts lowered the polymerization temperature to 210-degrees-C. A copolymer prepared from a mixture of 3a (35%), 3b (58%), and 3c (7%) exhibited onset of major degradation at 476-degrees-C in air. C1 USAF,MAT LAB,MLBP,WRDC,WRIGHT LABS,WRIGHT PATTERSON AFB,OH 45433. RP MALIK, AA (reprint author), FLUOROCHEM INC,680 S AYON AVE,AZUSA,CA 91702, USA. NR 12 TC 33 Z9 34 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0024-9297 J9 MACROMOLECULES JI Macromolecules PD SEP 16 PY 1991 VL 24 IS 19 BP 5266 EP 5268 DI 10.1021/ma00019a006 PG 3 WC Polymer Science SC Polymer Science GA GF730 UT WOS:A1991GF73000006 ER PT J AU PIRNAT, T FRIEDMAN, L SOREF, RA AF PIRNAT, T FRIEDMAN, L SOREF, RA TI ELECTROOPTIC MODE-DISPLACEMENT SILICON LIGHT-MODULATOR SO JOURNAL OF APPLIED PHYSICS LA English DT Article AB A new type of guided-wave electro-optical intensity modulator is proposed and analyzed. The waveguide consists of an N-type Si core layer on a P-type Si substrate. Foward bias on the N+-N-P-P+ diode decreases the refractive index of the core and displaces the fundamental guided mode downward into the substrate. However, the mode is not extinguished because the substrate is bounded by a P+ contact. A spatial filter at the output converts the mode displacement into optical intensity modulation. A Poisson and continuity equation solver and multilayer waveguide simulation were used to obtain numerical estimates of mode displacement in a realistic structure. C1 USAF,ROME LAB,ELECTROMAGNET & RELIABIL DIRECTORATE,BEDFORD,MA 01731. RP PIRNAT, T (reprint author), WORCESTER POLYTECH INST,DEPT ELECT ENGN,WORCESTER,MA 01609, USA. NR 3 TC 16 Z9 16 U1 1 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD SEP 15 PY 1991 VL 70 IS 6 BP 3355 EP 3359 DI 10.1063/1.349271 PG 5 WC Physics, Applied SC Physics GA GF539 UT WOS:A1991GF53900070 ER PT J AU NAMAVAR, F SOREF, RA AF NAMAVAR, F SOREF, RA TI OPTICAL WAVE-GUIDING IN SI/SI1-XGEX/SI HETEROSTRUCTURES SO JOURNAL OF APPLIED PHYSICS LA English DT Note ID SILICON AB Waveguiding at 1.3-mu-m has been observed in a submicrometer strained layer of Si1-xGex sandwiched between a Si capping layer and a Si substrate. This structure is a precursor of the waveguided Si/Si1-xGex/Si heterojunction bipolar transistor. The buried alloy layer, grown by chemical vapor deposition, had a Ge content of either 8% or 18%. The SiGe layer was approximately 1500 angstrom thick beneath a 2-mu-m Si cap. The observed TE0 mode profile agreed with theory. C1 USAF,ROME LAB,ERO,BEDFORD,MA 01731. RP NAMAVAR, F (reprint author), SPIRE CORP,PATRIOTS PK,BEDFORD,MA 01730, USA. NR 11 TC 23 Z9 24 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD SEP 15 PY 1991 VL 70 IS 6 BP 3370 EP 3372 DI 10.1063/1.349276 PG 3 WC Physics, Applied SC Physics GA GF539 UT WOS:A1991GF53900075 ER PT J AU ZHAO, MT CUI, YP SAMOC, M PRASAD, PN UNROE, MR REINHARDT, BA AF ZHAO, MT CUI, YP SAMOC, M PRASAD, PN UNROE, MR REINHARDT, BA TI INFLUENCE OF 2-PHOTON ABSORPTION ON 3RD-ORDER NONLINEAR OPTICAL PROCESSES AS STUDIED BY DEGENERATE 4-WAVE-MIXING - THE STUDY OF SOLUBLE DIDECYLOXY SUBSTITUTED POLYPHENYLS SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID INDEXES AB We have investigated the influence of two-photon absorption on the third-order nonlinear optical properties of model organic molecules using the technique of degenerate four-wave mixing (DFWM). A theoretical formulation developed here shows that the presence of two-photon absorption, which is related to the imaginary part of the third-order susceptibility chi-(3), leads to an enhancement of the effective third-order nonlinearity and to the appearance of effects caused by the formation of two-photon generated excited states. The dynamic behavior of the nonlinearity is then governed by the properties of excited molecules. The nonlinear effects also involve contributions which depend on the fifth power of the electric field. We have performed a systematic study of third-order nonlinear optical properties of alkoxy (-C10H21OCH) substituted p-polyphenyl oligomers using the technique of time-resolved degenerate four-wave mixing with subpicosecond pulses at 602 nm. Experimentally determined values of the second-order hyperpolarizability gamma for the oligomers increase smoothly from the monomer to the trimer, with a more rapid increase to the pentamer and to the heptamer. In addition, the hyperpolarizabilities for the pentamer and the heptamer appear to be complex. A smooth increase of the gamma value is expected from an increase of the pi conjugation from a shorter chain oligomer to a longer chain oligomer. The more rapid increase of the gamma value in the pentamer, and especially in the heptamer, however, cannot be explained satisfactorily by only taking into account the pi-conjugation length. Two-photon absorption for the pentamer and the heptamer at the measurement wavelength of 602 nm is suggested to be important as the observed dynamic behavior is satisfactorily explained by the predictions of the theoretical model presented here. It is shown that the effective gamma value for a two-photon absorbing material is a function of optical intensity, pulse width, and sample length if one uses the conventional degenerate four-wave mixing description. C1 SUNY BUFFALO,DEPT CHEM,PHOTON RES LAB,BUFFALO,NY 14214. USAF,MAT LAB,DIV NONMET MAT,POLYMER BRANCH,WRIGHT PATTERSON AFB,OH 45433. RI Samoc, Marek/A-5501-2008 OI Samoc, Marek/0000-0002-5404-2455 NR 33 TC 40 Z9 44 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD SEP 15 PY 1991 VL 95 IS 6 BP 3991 EP 4001 DI 10.1063/1.460806 PG 11 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA GF099 UT WOS:A1991GF09900014 ER PT J AU ROSENSTEIN, AH AF ROSENSTEIN, AH TI OVERVIEW OF RESEARCH ON AEROSPACE METALLIC STRUCTURAL-MATERIALS SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING LA English DT Article ID ALLOYS AB The sponsored research program of the U.S. Air Force Office of Scientific Research (AFOSR) contributes to the fundamental knowledge required for improving the performance, cost and reliability of aerospace structural materials. The program studies a broad range of materials properties at ambient and elevated temperatures, such as strength, toughness, fatigue resistance and corrosion resistance of airframe, turbine engine and spacecraft materials. Although past emphasis in this program has focused on titanium-, aluminum- and nickel-based alloys, current emphasis is on refractory alloys, intermetallics and metal matrix composites. A key theme is research on new families of metallic materials beyond currently available traditional systems. Activities relating atomic phenomena to bulk mechanical properties, innovative processing of advanced materials, and utilization of sophisticated laboratory techniques complement the research on materials properties. This paper highlights eight research efforts that have resulted from AFOSR funding. RP ROSENSTEIN, AH (reprint author), USAF,OFF SCI RES,WASHINGTON,DC 20332, USA. NR 8 TC 7 Z9 9 U1 1 U2 4 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0921-5093 J9 MAT SCI ENG A-STRUCT JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process. PD SEP 15 PY 1991 VL 143 IS 1-2 BP 31 EP 41 DI 10.1016/0921-5093(91)90723-Z PG 11 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA GK329 UT WOS:A1991GK32900005 ER PT J AU KOCH, K MOORE, GT AF KOCH, K MOORE, GT TI 2-COLOR INTERFEROMETRY USING A DETUNED FREQUENCY-DOUBLING CRYSTAL SO OPTICS LETTERS LA English DT Article ID FIBERS AB Phase mismatch by angular detuning permits continuous variation of the intensity of second-harmonic light generated in a nonlinear crystal while maintaining a controlled phase relationship between the first and second harmonics. Interference of this second-harmonic light with second-harmonic fight generated in a second crystal was measured and can be understood by taking beam walk-off into account. When the second crystal is replaced by a fiber, the phase of the chi(2) grating in the fiber is measured to be 88 +/- 4-degrees, which differs by 180-degrees from recently reported results. C1 UNIV NEW MEXICO,CTR ADV STUDIES,ALBUQUERQUE,NM 87131. RP KOCH, K (reprint author), USAF,LTN,PHILLIPS LAB,NONLINEAR OPT CTR TECHNOL,KIRTLAND AFB,NM 87117, USA. NR 5 TC 2 Z9 2 U1 0 U2 0 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0146-9592 J9 OPT LETT JI Opt. Lett. PD SEP 15 PY 1991 VL 16 IS 18 BP 1436 EP 1438 DI 10.1364/OL.16.001436 PG 3 WC Optics SC Optics GA GF631 UT WOS:A1991GF63100024 PM 19776994 ER PT J AU KHOURY, J RYAN, V WOODS, C CRONINGOLOMB, M AF KHOURY, J RYAN, V WOODS, C CRONINGOLOMB, M TI PHOTOREFRACTIVE OPTICAL LOCK-IN DETECTOR SO OPTICS LETTERS LA English DT Article AB An optical lock-in detector has been proposed and demonstrated. This scheme utilizes the multiplicative and low-pass filtering characteristics of four-wave mixing in Bi12SiO20. C1 TUFTS UNIV,CTR ELECTROOPT TECHNOL,MEDFORD,MA 02155. RP KHOURY, J (reprint author), USAF,OPT SIGNAL PROC BRANCH,BEDFORD,MA 01731, USA. RI Cronin-Golomb, Mark/A-5430-2012 OI Cronin-Golomb, Mark/0000-0002-8936-4358 NR 10 TC 27 Z9 27 U1 0 U2 5 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0146-9592 J9 OPT LETT JI Opt. Lett. PD SEP 15 PY 1991 VL 16 IS 18 BP 1442 EP 1444 DI 10.1364/OL.16.001442 PG 3 WC Optics SC Optics GA GF631 UT WOS:A1991GF63100026 PM 19776996 ER PT J AU LAROSA, GJ WEINHOLD, K PROFY, AT LANGLOIS, AJ DREESMAN, GR BOSWELL, RN SHADDUCK, P BOLOGNESI, DP MATTHEWS, TJ EMINI, EA PUTNEY, SD AF LAROSA, GJ WEINHOLD, K PROFY, AT LANGLOIS, AJ DREESMAN, GR BOSWELL, RN SHADDUCK, P BOLOGNESI, DP MATTHEWS, TJ EMINI, EA PUTNEY, SD TI CONSERVED SEQUENCE AND STRUCTURAL ELEMENTS IN THE HIV-1 PRINCIPAL NEUTRALIZING DETERMINANT - FURTHER CLARIFICATIONS SO SCIENCE LA English DT Article C1 BIOTECH RESOURCES INC,SAN ANTONIO,TX 78249. WILFORD HALL USAF MED CTR,DEPT MED,LACKLAND AFB,TX 78236. MERCK SHARP & DOHME LTD,W POINT,PA 19486. DUKE UNIV,SCH MED,DEPT SURG,DURHAM,NC 27710. RP LAROSA, GJ (reprint author), REPLIGEN CORP,CAMBRIDGE,MA 02139, USA. NR 1 TC 18 Z9 18 U1 0 U2 0 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 SN 0036-8075 J9 SCIENCE JI Science PD SEP 6 PY 1991 VL 253 IS 5024 BP 1146 EP 1146 DI 10.1126/science.1887238 PG 1 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA GD808 UT WOS:A1991GD80800035 PM 1887238 ER PT J AU BARTHELEMY, RR AF BARTHELEMY, RR TI FACE TO FACE SO AEROSPACE AMERICA LA English DT Article RP BARTHELEMY, RR (reprint author), USAF,SYST COMMAND,NATL AEROSP PLANE PROGRAM,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0740-722X J9 AEROSPACE AM JI Aerosp. Am. PD SEP PY 1991 VL 29 IS 9 BP 6 EP 9 PG 4 WC Engineering, Aerospace SC Engineering GA GE198 UT WOS:A1991GE19800002 ER PT J AU WEBSTER, WP SHANG, JS AF WEBSTER, WP SHANG, JS TI THIN-LAYER FULL NAVIER-STOKES SIMULATIONS OVER A SUPERSONIC DELTA WING SO AIAA JOURNAL LA English DT Article; Proceedings Paper CT 28TH MEETING ON AEROSPACE SCIENCES CY JAN 08-11, 1990 CL RENO, NV SP AMER INST AERONAUT & ASTRONAUT ID FLOWS AB Steady flowfields describing the flow over a 75-deg swept delta wing at M infinity = 1.95 and 4.48 x 10(6) were simulated at alpha = 20 and 30 deg using two computer codes. Comparisons were made between calculations using 1) the laminar and turbulent thin-layer Navier-Stokes equations, and 2) laminar thin-layer and Navier-Stokes equations. At alpha = 20 deg, each equation set captures the essential structure of the flow and the differences between their results are minor. Numerical results generated by a grid refinement study exhibited only a minor improvement. The Navier-Stokes equations were used to calculate the flow at alpha = 30 deg. A region of reversed flow along the surface near the trailing edge was observed. The vertical extent of this region was much smaller, but the upstream propagation extended much farther than the thin-layer simulation. RP WEBSTER, WP (reprint author), USAF,WRIGHT RES & DEV CTR,WRIGHT PATTERSON AFB,OH 45433, USA. NR 16 TC 8 Z9 10 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0001-1452 J9 AIAA J JI AIAA J. PD SEP PY 1991 VL 29 IS 9 BP 1363 EP 1369 DI 10.2514/3.10747 PG 7 WC Engineering, Aerospace SC Engineering GA GD700 UT WOS:A1991GD70000003 ER PT J AU BISHOP, PA NUNNELEY, SA CONSTABLE, SH AF BISHOP, PA NUNNELEY, SA CONSTABLE, SH TI COMPARISONS OF AIR AND LIQUID PERSONAL COOLING FOR INTERMITTENT HEAVY WORK IN MODERATE TEMPERATURES SO AMERICAN INDUSTRIAL HYGIENE ASSOCIATION JOURNAL LA English DT Article AB Personal microenvironmental cooling has been used to enhance safety and extend the work capacity of laborers wearing protective clothing. Previous studies of air and liquid cooling have used either very low work rates or high environmental temperatures. Emergency work tasks frequently require high work rates and occur in moderate ambient temperatures. The purpose of this research was to examine the efficacy of intermittent personal cooling during rest and to compare liquid and air cooling systems in subjects engaged in hard work. Fourteen volunteers wearing chemical protective clothing performed treadmill walking at a metabolic rate of 430 W for 45 min followed by a 15-min rest at a wet-bulb globe temperature of 25-degrees-C. During rest, volunteers received either no cooling, air cooling, or liquid cooling. Both cooling systems partially alleviated heat strain and increased work time with the air system offering slightly more effective cooling. C1 UNIV ALABAMA,COLL EDUC HLTH & HUMAN PERFORMANCE STUDIES,TUSCALOOSA,AL 35487. USAF,ARMSTRONG LAB,CFTO,BROOKS AFB,TX 78235. NR 8 TC 23 Z9 26 U1 0 U2 9 PU AMER INDUSTRIAL HYGIENE ASSOC PI FAIRFAX PA 2700 PROSPERITY AVE #250, FAIRFAX, VA 22031-4307 SN 0002-8894 J9 AM IND HYG ASSOC J JI Am. Ind. Hyg. Assoc. J. PD SEP PY 1991 VL 52 IS 9 BP 393 EP 397 DI 10.1202/0002-8894(1991)052<0393:COAALP>2.0.CO;2 PG 5 WC Environmental Sciences; Public, Environmental & Occupational Health SC Environmental Sciences & Ecology; Public, Environmental & Occupational Health GA KC589 UT WOS:A1991KC58900010 PM 1781443 ER PT J AU JAFFERS, G ANGSTADT, JD BOWMAN, JS AF JAFFERS, G ANGSTADT, JD BOWMAN, JS TI EARLY CANNULATION OF PLASMA TFE AND GORE-TEX GRAFTS FOR HEMODIALYSIS - A PROSPECTIVE RANDOMIZED STUDY SO AMERICAN JOURNAL OF NEPHROLOGY LA English DT Article DE ACCESS; DIALYSIS; GRAFTS; CANNULATION; GORE-TEX; PLASMA TFE ID SUBCLAVIAN VEIN STENOSIS; COMPLICATION; THROMBOSIS; CATHETERIZATION AB Fifty-one consecutive vascular access procedures were randomized to either the Medtronic plasma TFE or Gore-Tex polytetrafluoroethylene (PTFE) conduits in patients requiring immediate dialysis from December 1989 to April 1990. There were 49 forearm loop fistulas and 2 upper arm grafts. Fifty of these fistulas were cannulated within 48 h of placement to avoid use of subclavian venous catheters for hemodialysis. Complications related to the early cannulation of these fistulas included 2 hematomas in the plasma TFE group, and 3 hematomas in the Gore-Tex group (p = 1.00). Two patients with Gore-Tex grafts were systemically heparinized prior to hematoma formation after thrombectomy of their accesses. There were no adverse sequelae in these 5 patients, and none of the hematomas interfered with further dialytic therapy. One patient in the plasma TFE group and 3 patients in the Gore-Tex group developed cellulitis within the first month of placement (p = 0.65). All were treated with intravenous vancomycin with resolution of the erythema. None of the plasma TFE and 3 of the Gore-Tex fistulas thrombosed within 30 days of placement (p = 0.22). All were salvaged by thrombectomy. Both the plasma TFE and Gore-Tex vascular conduits may be used after surgical placement for early dialytic therapy and are associated with minimal early complications. The early use of these fistulas may eliminate the need for subclavian venous cannulation in most patients with renal failure, thus diminishing the incidence of subclavian venous stenosis and thrombosis. Further observation of these grafts will be necessary to determine the effect of immediate cannulation on their long-term performance for hemodialysis. RP JAFFERS, G (reprint author), WILFORD HALL USAF MED CTR,DEPT SURG TRANSPLANTAT,LACKLAND AFB,TX 78236, USA. NR 16 TC 16 Z9 16 U1 0 U2 0 PU KARGER PI BASEL PA ALLSCHWILERSTRASSE 10, CH-4009 BASEL, SWITZERLAND SN 0250-8095 J9 AM J NEPHROL JI Am. J. Nephrol. PD SEP-OCT PY 1991 VL 11 IS 5 BP 369 EP 373 DI 10.1159/000168340 PG 5 WC Urology & Nephrology SC Urology & Nephrology GA HJ179 UT WOS:A1991HJ17900003 PM 1839703 ER PT J AU BOGART, MH JONES, OW FELDER, RA BEST, RG BRADLEY, L BUTTS, W CRANDALL, B MACMAHON, W WIANS, FH LOEH, PV AF BOGART, MH JONES, OW FELDER, RA BEST, RG BRADLEY, L BUTTS, W CRANDALL, B MACMAHON, W WIANS, FH LOEH, PV TI PROSPECTIVE EVALUATION OF MATERNAL SERUM HUMAN CHORIONIC-GONADOTROPIN LEVELS IN 3428 PREGNANCIES SO AMERICAN JOURNAL OF OBSTETRICS AND GYNECOLOGY LA English DT Article DE HUMAN CHORIONIC GONADOTROPIN; ALPHA-FETOPROTEIN; DOWN SYNDROME; ANEUPLOIDY ID ALPHA-FETOPROTEIN; DOWNS-SYNDROME; UNCONJUGATED ESTRIOL; FETAL; HCG; BETA-1-GLYCOPROTEIN; SMOKING AB As part of a multicenter prospective study, second-trimester human chorionic gonadotropin and alpha-fetoprotein concentrations were evaluated. Data included maternal age, human chorionic gonadotropin level, alpha-fetoprotein level, weight, race, and pregnancy outcome of 3428 pregnancies at between 15 and 20 weeks' gestation. The results of the study indicate that human chorionic gonadotropin levels decrease as maternal weight increases, that weight-adjusted human chorionic gonadotropin levels for Oriental and black women are higher than for white or Hispanic women, and that twin pregnancies have higher human chorionic gonadotropin levels than singleton pregnancies. Of 255 pregnancies that did not have normal outcomes, 54 (21.2%) had human chorionic gonadotropin levels > 2.0 multiples of the median and 26 (10.2%) had alpha-fetoprotein levels > 2.5 multiples of the median. Of 11 pregnancies with fetal aneuploidy, 6 (54.5%) had human chorionic gonadotropin levels > 2.0 multiples of the median. It is concluded that in human chorionic gonadotropin screening programs for fetal Down syndrome, weight and race adjustments are necessary for accurate risk assessment. C1 UNIV VIRGINIA,CHARLOTTESVILLE,VA 22903. UNIV S CAROLINA,COLUMBIA,SC 29208. ARIZONA INST GENET,CHANDLER,AZ. GRP HLTH COOPERAT,RENTON,WA. UNIV CALIF LOS ANGELES,LOS ANGELES,CA 90024. EMORY UNIV,ATLANTA,GA 30322. USAF,LACKLAND AFB,TX 78236. HYBRITECH INC,LA JOLLA,CA. RP BOGART, MH (reprint author), UNIV CALIF SAN DIEGO,0639,LA JOLLA,CA 92093, USA. NR 22 TC 32 Z9 32 U1 0 U2 1 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0002-9378 J9 AM J OBSTET GYNECOL JI Am. J. Obstet. Gynecol. PD SEP PY 1991 VL 165 IS 3 BP 663 EP 667 PG 5 WC Obstetrics & Gynecology SC Obstetrics & Gynecology GA GG136 UT WOS:A1991GG13600033 PM 1716420 ER PT J AU JENKINS, DM NEWTON, WD AF JENKINS, DM NEWTON, WD TI ATHEROEMBOLISM SO AMERICAN SURGEON LA English DT Article AB Atheroembolism is an underdiagnosed and often preventable cause of acute arterial insufficiency. The patients suffering from atheroembolism require aggressive evaluation for a source of emboli and frequently surgical excision or exclusion of the source. The Keesler Air Force Base experience with atheroembolism over the past four years was reviewed. Fifteen patients representing 0.03 per cent of hospital admissions were diagnosed with atheroembolism. The embolic source as confirmed by arteriography was aortoiliac in eight patients (57%), femoropopliteal in six patients (43%), and unknown in one patient. Nine patients (60%) were treated surgically or with angioplasty. Three patients had toe amputations and one required a below-the-knee amputation. Only one death occurred that was secondary to unrelated disease. RP JENKINS, DM (reprint author), USAF,MED CTR,DEPT SURG,KEESLER AFB,MS 39534, USA. NR 7 TC 6 Z9 6 U1 0 U2 0 PU SOUTHEASTERN SURGICAL CONGRESS PI ATLANTA PA 1776 PEACHTREE RD, NW., SUITE 410N, ATLANTA, GA 30309-2352 SN 0003-1348 J9 AM SURGEON JI Am. Surg. PD SEP PY 1991 VL 57 IS 9 BP 588 EP 590 PG 3 WC Surgery SC Surgery GA GF811 UT WOS:A1991GF81100008 PM 1929003 ER PT J AU GILL, HL HAURIN, DR AF GILL, HL HAURIN, DR TI USER COST AND THE DEMAND FOR HOUSING ATTRIBUTES SO AREUEA JOURNAL-JOURNAL OF THE AMERICAN REAL ESTATE & URBAN ECONOMICS ASSOCIATION LA English DT Article ID HEDONIC PRICES; IMPLICIT MARKETS AB A number of studies have related changes in the demand for housing to changes in user cost. All have treated housing as a composite good rather than as a bundle of characteristics. We consider the effect of changing user cost on the demand for the component characteristicts of owner-occupied housing, and, given information about the supply of the characteristics, we predict implicit price responses. An empirical test of our model indicates that reductions in user cost result in higher real prices for the non-replicable attributes of housing, examples being location and access to fixed amenities. In contrast, the price of attributes that are perfectly elastic in supply are not affected by changes in user costs. We conclude that the effects of changing user cost are not uniform across housing types and locations, thus generating the appearance of housing submarkets. C1 OHIO STATE UNIV,DEPT ECON & FINANCE,COLUMBUS,OH 43210. RP GILL, HL (reprint author), USAF,INST TECHNOL,SCH SYST & LOGIST,WRIGHT PATTERSON AFB,OH 45433, USA. NR 16 TC 2 Z9 2 U1 1 U2 2 PU AMER REAL ESTATE URBAN ECONOMICS ASSOC PI BLOOMINGTON PA INDIANA UNIV, SCHOOL BUSINESS, RM 428, 1309 E TENTH ST, BLOOMINGTON, IN 47405 SN 0270-0484 J9 AREUEA J PD FAL PY 1991 VL 19 IS 3 BP 383 EP 395 PG 13 WC Business, Finance; Planning & Development SC Business & Economics; Public Administration GA HE438 UT WOS:A1991HE43800007 ER PT J AU MCCORMICK, TJ LYONS, TJ AF MCCORMICK, TJ LYONS, TJ TI MEDICAL CAUSES OF IN-FLIGHT INCAPACITATION - USAF EXPERIENCE 1978-1987 SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article ID SUDDEN INCAPACITATION AB In-flight incapacitation of a fully trained crewmember due to a serious underlying medical condition is a rather infrequent event. In order to delineate the extent and nature of the incapacitation problem we reviewed the data base at the Air Force Safety and Inspection Center for all incidents coded for incapacitation, preexisting disease, or other acute illnesses occurring during the 10 years between 1978 and 1987. During this period there were 23 in-flight incidents of incapacitation due to significant underlying medical conditions. In 11 of the incidents the incapacitation resulted in a loss of consciousness. Neurologic conditions were the most frequent cause followed by cardiovascular conditions. We calculated a rate of incapacitation as 0.19 per million aircrew flying hours. C1 USAF,SCH AEROSP MED,BROOKS AFB,TX 78235. RP MCCORMICK, TJ (reprint author), USAF HOSP,AEROMED SERV,ROBINS AFB,GA 31098, USA. NR 8 TC 19 Z9 21 U1 0 U2 0 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD SEP PY 1991 VL 62 IS 9 BP 884 EP 887 PG 4 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA GC826 UT WOS:A1991GC82600013 PM 1930080 ER PT J AU SHREEVE, DF AF SHREEVE, DF TI ELECTIVE MUTISM - ORIGINS IN STRANGER ANXIETY AND SELECTIVE ATTENTION SO BULLETIN OF THE MENNINGER CLINIC LA English DT Article ID CHILDREN RP SHREEVE, DF (reprint author), WILFORD HALL USAF MED CTR,CHILD & ADOLESCENT MENTAL HLTH SERV,LACKLAND AFB,TX 78236, USA. NR 31 TC 8 Z9 8 U1 0 U2 1 PU MENNINGER FOUNDATION PI TOPEKA PA BOX 829, TOPEKA, KS 66601 SN 0025-9284 J9 B MENNINGER CLIN JI Bull. Menninger Clin. PD FAL PY 1991 VL 55 IS 4 BP 491 EP 504 PG 14 WC Psychiatry; Psychology, Psychoanalysis SC Psychiatry; Psychology GA GR964 UT WOS:A1991GR96400005 PM 1773211 ER PT J AU REINHARDT, BA UNROE, MR EVERS, RC ZHAO, MT SAMOC, M PRASAD, PN SINSKY, M AF REINHARDT, BA UNROE, MR EVERS, RC ZHAO, MT SAMOC, M PRASAD, PN SINSKY, M TI 3RD-ORDER OPTICAL NONLINEARITIES OF MODEL COMPOUNDS CONTAINING BENZOBISTHIAZOLE, BENZOBISOXAZOLE, AND BENZBISIMIDAZOLE UNITS SO CHEMISTRY OF MATERIALS LA English DT Article ID THIN-FILMS AB As part of a continuing study, a series of highly conjugated aromatic benzobisthiazole, benzobisoxazole, and N,N-diphenylbenzbisimidazole model compounds were synthesize, and their third-order nonlinear optical properties investigated by using subpicosecond degenerate four-wave mixing. Measurements were made at 602 nm on THF solutions, vacuum-deposited films, or melt-quenched films. In all but one material, the third-order effect was determined to be instantaneous within the employed temporal resolution, suggesting dominance of electronic nonlinearity. From the experimental data it was possible to formulate structure-nonlinear optical property correlations and demonstrate that the molecular second hyperpolarizability can be increased almost 3 orders of magnitude by simple structural modifications. C1 SUNY BUFFALO,DEPT CHEM,PHOTON RES LAB,BUFFALO,NY 14214. SYSTRAN CORP,DAYTON,OH 45324. RP REINHARDT, BA (reprint author), WRIGHT LAB,DIV NONMET MAT,POLYMER BRANCH,WRIGHT PATTERSON AFB,OH 45433, USA. RI Samoc, Marek/A-5501-2008 OI Samoc, Marek/0000-0002-5404-2455 NR 16 TC 31 Z9 32 U1 0 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0897-4756 J9 CHEM MATER JI Chem. Mat. PD SEP-OCT PY 1991 VL 3 IS 5 BP 864 EP 871 DI 10.1021/cm00017a023 PG 8 WC Chemistry, Physical; Materials Science, Multidisciplinary SC Chemistry; Materials Science GA GH636 UT WOS:A1991GH63600023 ER PT J AU MCHUGH, CP AF MCHUGH, CP TI DISTRIBUTIONAL RECORDS FOR SOME NORTH-AMERICAN SAND FLIES, LUTZOMYIA (DIPTERA, PSYCHODIDAE) SO ENTOMOLOGICAL NEWS LA English DT Article AB Distributional records, including seven new county records, are reported for Lutzomyia anthophora, L. diabolica, L. shannoni, and L. texana collected in Texas and Arkansas. RP MCHUGH, CP (reprint author), OCCUPAT & ENVIRONM HLTH DIRECTORATE,ARMSTRONG LAB,BROOKS AFB,TX 78235, USA. NR 0 TC 8 Z9 8 U1 0 U2 3 PU AMER ENTOMOL SOC PI PHILADELPHIA PA 1900 BENJ FRANKLIN PARKWAY, PHILADELPHIA, PA 19103-1195 SN 0013-872X J9 ENTOMOL NEWS JI Entomol. News PD SEP-OCT PY 1991 VL 102 IS 4 BP 192 EP 194 PG 3 WC Entomology SC Entomology GA GH130 UT WOS:A1991GH13000006 ER PT J AU HALLAUER, WL LAMBERSON, SE BAER, CA AF HALLAUER, WL LAMBERSON, SE BAER, CA TI ACTIVE VIBRATION DAMPING OF A PLANAR TRUSS USING AIR-JET THRUSTERS SO EXPERIMENTAL MECHANICS LA English DT Article AB This article describes and analyzes, both experimentally and theoretically, a control system using non-throttleable air-jet thrusters to actively dampen the vibration of a 20-bay, 7.07-m-long laboratory planar truss. The thrusters were highly effective at low frequencies but, due to mechanical time delays, they lost effectiveness and were even potentially destabilizing at higher frequencies. The control system was quite nonlinear due to the on-off operation of the thrusters and to a deadband designed to prevent unwanted disturbance by low-level electrical noise. The planar-truss vibration modes evaluated are the first four, at 1.56, 10.0, 24.7 and 43.0 Hz. The active damping system consisted primarily of two pairs of opposing air-jet thrusters, a servo accelerometer colocated with each thruster pair, and a small analog computer. C1 PHILLIPS LAB,APPL LASER TECHNOL BRANCH,KIRTLAND AFB,NM 87117. USAF ACAD,FJ SEILER RES LAB,COLORADO SPRINGS,CO 80840. RP HALLAUER, WL (reprint author), VIRGINIA POLYTECH INST & STATE UNIV,DEPT AEROSP & OCEAN ENGN,BLACKSBURG,VA 24061, USA. NR 18 TC 1 Z9 1 U1 0 U2 0 PU SOC EXPERIMENTAL MECHANICS PI BETHEL PA 7 SCHOOL STREET, BETHEL, CT 06801 SN 0014-4851 J9 EXP MECH JI Exp. Mech. PD SEP PY 1991 VL 31 IS 3 BP 189 EP 196 DI 10.1007/BF02326058 PG 8 WC Materials Science, Multidisciplinary; Mechanics; Materials Science, Characterization & Testing SC Materials Science; Mechanics GA GH495 UT WOS:A1991GH49500001 ER PT J AU MEYER, GW KOMADINA, K PERUCCA, P AF MEYER, GW KOMADINA, K PERUCCA, P TI VEGETABLE PEROXIDASE IS DENATURED BY GASTRIC-ACID - FRESH VEGETABLES DO NOT CAUSE FALSE-POSITIVE STOOL HEMOCCULTS IN NORMAL SUBJECTS SO GASTROENTEROLOGY LA English DT Letter RP MEYER, GW (reprint author), USAF,WASHINGTON,DC 20330, USA. NR 3 TC 1 Z9 1 U1 0 U2 0 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0016-5085 J9 GASTROENTEROLOGY JI Gastroenterology PD SEP PY 1991 VL 101 IS 3 BP 871 EP 871 PG 1 WC Gastroenterology & Hepatology SC Gastroenterology & Hepatology GA GB054 UT WOS:A1991GB05400037 PM 1650322 ER PT J AU FALK, S STUTTE, HJ FRIZZERA, G AF FALK, S STUTTE, HJ FRIZZERA, G TI HODGKINS-DISEASE AND SINUS HISTIOCYTOSIS WITH MASSIVE LYMPHADENOPATHY-LIKE CHANGES SO HISTOPATHOLOGY LA English DT Article DE HODGKINS DISEASE; LYMPH NODE; ROSAI-DORFMAN DISEASE; SINUS HISTIOCYTOSIS WITH MASSIVE LYMPHADENOPATHY ID ROSAI-DORFMAN DISEASE; MALIGNANT-LYMPHOMA AB Sinus histiocytosis with massive lymphadenopathy (SHML) is a disorder of unknown origin which is only infrequently associated with lymphoid neoplasms. We report the first two cases of Hodgkin's disease with simultaneous SHML-like changes in the same lymph node. C1 USAF,INST PATHOL,DEPT HEMATOPATHOL,WASHINGTON,DC 20330. RP FALK, S (reprint author), UNIV FRANKFURT KLINIKUM,SENCKENBERG ZENTRUM PATHOL,THEODOR STERN KAI 7,W-6000 FRANKFURT 70,GERMANY. NR 8 TC 21 Z9 22 U1 0 U2 0 PU BLACKWELL SCIENCE LTD PI OXFORD PA OSNEY MEAD, OXFORD, OXON, ENGLAND OX2 0EL SN 0309-0167 J9 HISTOPATHOLOGY JI Histopathology PD SEP PY 1991 VL 19 IS 3 BP 221 EP 224 DI 10.1111/j.1365-2559.1991.tb00025.x PG 4 WC Cell Biology; Pathology SC Cell Biology; Pathology GA GF994 UT WOS:A1991GF99400003 PM 1916695 ER PT J AU TILTON, ML DENTE, GC PAXTON, AH CSER, J DEFREEZ, RK MOELLER, CE DEPATIE, D AF TILTON, ML DENTE, GC PAXTON, AH CSER, J DEFREEZ, RK MOELLER, CE DEPATIE, D TI HIGH-POWER, NEARLY DIFFRACTION-LIMITED OUTPUT FROM A SEMICONDUCTOR-LASER WITH AN UNSTABLE RESONATOR SO IEEE JOURNAL OF QUANTUM ELECTRONICS LA English DT Article ID CAVITY; ARRAY AB We describe an on-the-chip design of a nearly diffraction-limited broad-area semiconductor diode laser. The devices achieved single lateral mode operation as unstable resonators with magnifications between two and three. The unstable resonators were realized by focused ion beam (FIB) micromachining a diverging mirror at one of the outcoupling facets. Our modeling efforts agree well with experimental data and show that an optimum device design exists in which stable nearly diffraction-limited operation is predicted for up to six times threshold. This unstable resonator design has achieved, experimentally, the highest diffraction limited power and best external differential efficiency ever reported for any broad-area device with a curved facet. C1 GCD ASSOCIATES,ALBUQUERQUE,NM 87110. MISSION RES CORP,ALBUQUERQUE,NM 87106. OREGON GRAD INST SCI & TECHNOL,DEPT APPL PHYS & ELECT ENGN,BEAVERTON,OR 97006. PHILLIPS LAB,KIRTLAND AFB,NM 87117. USAF,WEAPONS LAB,ALBUGUERQUE,NM. RP TILTON, ML (reprint author), ROCKWELL POWER SYST,ALBUQUERQUE,NM 87106, USA. NR 23 TC 68 Z9 69 U1 2 U2 8 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9197 J9 IEEE J QUANTUM ELECT JI IEEE J. Quantum Electron. PD SEP PY 1991 VL 27 IS 9 BP 2098 EP 2108 DI 10.1109/3.135167 PG 11 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA GJ183 UT WOS:A1991GJ18300004 ER PT J AU MCCORMACK, C HAUPT, R AF MCCORMACK, C HAUPT, R TI ANTENNA PATTERN SYNTHESIS USING PARTIALLY TAPERED ARRAYS SO IEEE TRANSACTIONS ON MAGNETICS LA English DT Article; Proceedings Paper CT 4TH BIENNIAL CONF ON ELECTROMAGNETIC FIELD COMPUTATION CY OCT 22-24, 1990 CL TORONTO, CANADA SP IEEE AB We applied optimization techniques to the synthesis of binomial and partially tapered low sidelobe array antennas. The resulting low sidelobe tapers depended upon the cost function and minimization technique. RP MCCORMACK, C (reprint author), USAF ACAD,DEPT ELECT ENGN,COLORADO SPRINGS,CO 80840, USA. NR 0 TC 2 Z9 2 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9464 J9 IEEE T MAGN JI IEEE Trans. Magn. PD SEP PY 1991 VL 27 IS 5 BP 3902 EP 3904 DI 10.1109/20.104955 PG 3 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA GT689 UT WOS:A1991GT68900033 ER PT J AU CARR, PH MCAVOY, BR AF CARR, PH MCAVOY, BR TI SPECIAL ISSUE ON MICROWAVE APPLICATIONS OF SUPERCONDUCTIVITY SO IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES LA English DT Editorial Material RP CARR, PH (reprint author), USAF,ROME AIR DEV CTR,ELECTROMAGNET DIRECTORATE,COMPONENTS TECHNOL BRANCH,BEDFORD,MA 01731, USA. NR 2 TC 8 Z9 8 U1 0 U2 1 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9480 J9 IEEE T MICROW THEORY JI IEEE Trans. Microw. Theory Tech. PD SEP PY 1991 VL 39 IS 9 BP 1445 EP 1447 PG 3 WC Engineering, Electrical & Electronic SC Engineering GA GA255 UT WOS:A1991GA25500001 ER PT J AU PARSONS, DS KEARNS, D AF PARSONS, DS KEARNS, D TI THE 2-HEADED STETHOSCOPE - ITS USE FOR RULING OUT AIRWAY FOREIGN-BODIES SO INTERNATIONAL JOURNAL OF PEDIATRIC OTORHINOLARYNGOLOGY LA English DT Article DE FOREIGN BODY; ASYMMETRY; STETHOSCOPE AB Foreign body aspiration is a common concern for physicians and surgeons who care for children. Evaluating infants and toddlers to rule out this possible diagnosis is often fraught with difficulties. Specifically, the standard stethoscope is of limited use unless unilateral asymmetry of breath sounds can be appreciated. Inspiratory and expiratory chest X-rays in children often appear to show a very similar diaphragmatic excursion and, unless the object is radiodense, the determination of foreign body aspiration is frequently not possible. Other procedures, such as flexible or rigid endoscopy, are more invasive and are reserved for children with positive findings or a less acute but more perplexing scenario. We present the use of the two-headed stethoscope as an option for evaluation of children to rule out foreign body aspiration. Our experience with this instrument over the past 10 years has consistently allowed us to non-invasively differentiate the presence or absence of objects in the airway. C1 SAN DIEGO CHILDRENS HOSP,SAN DIEGO,CA. RP PARSONS, DS (reprint author), WILFORD HALL USAF MED CTR,DEPT OTOLARYNGOL HEAD & NECK SURG,LACKLAND AFB,TX 78236, USA. NR 0 TC 4 Z9 4 U1 0 U2 0 PU ELSEVIER SCI IRELAND LTD PI CLARE PA CUSTOMER RELATIONS MANAGER, BAY 15, SHANNON INDUSTRIAL ESTATE CO, CLARE, IRELAND SN 0165-5876 J9 INT J PEDIATR OTORHI JI Int. J. Pediatr. Otorhinolaryngol. PD SEP PY 1991 VL 22 IS 2 BP 181 EP 185 DI 10.1016/0165-5876(91)90037-C PG 5 WC Otorhinolaryngology; Pediatrics SC Otorhinolaryngology; Pediatrics GA GJ259 UT WOS:A1991GJ25900008 PM 1743878 ER PT J AU WOLF, RA SPIRO, RW RICH, FJ AF WOLF, RA SPIRO, RW RICH, FJ TI EXTENSION OF CONVECTION MODELING INTO THE HIGH-LATITUDE IONOSPHERE - SOME THEORETICAL DIFFICULTIES SO JOURNAL OF ATMOSPHERIC AND TERRESTRIAL PHYSICS LA English DT Article; Proceedings Paper CT SYMP ON MIDDLE ATMOSPHERIC ELECTRODYNAMICS CY AUG, 1989 CL EXETER, ENGLAND SP INT ASSOC GEOMAGNETISM & AERON ID PLASMA SHEET; ELECTRIC-FIELD; MAGNETOSPHERIC CONVECTION; EARTHS MAGNETOTAIL; STATISTICAL-MODEL; PRECIPITATION; QUIET; FLUX; THERMOSPHERE; CONSEQUENCES AB An attempt has been made to extend the Rice Convection Model (RCM) and to merge it with empirical models, so as to cover the entire high-latitude ionosphere. Specifically, we have modified the RCM in two ways: (1) by a tailward expansion of the region where coupled ionosphere-magnetosphere convection model calculations are done, and (2) by use of ionospheric observation-based models poleward of the region where detailed convection modelling is applicable. We use a scaled and shifted Heppner-Maynard-Rich electric-field model directly for empirical extension of the ionospheric potential distribution into the polar cap and the statistical electron precipitation model of Hardy and co-workers less directly for the poleward extension of the auroral precipitation pattern. One goal in globalizing the RCM is to provide precipitation and electric field inputs for ionosphere and thermosphere modelers. We hope to provide an alternative to purely empirical precipitation and electric field models, by means of a hybrid model that is theoretical and dynamical with regard to the inner and middle plasma sheet, though still empirical with regard to the boundary plasma sheet and polar cap. We wish to avoid the statistical blurring that is a natural characteristic of empirical models and also to produce a model in which the boundaries of the precipitation and electric field patterns maintain physically consistent relationships to each other. Although the first set of runs of this globalized version of the RCM did indeed produce precipitation and electric field patterns with sharp features and with theoretically consisent relationships between boundaries, the results displayed two substantial difficulties. First, the model-predicted latitudinal width of the auroral sunward-flow region tended to be too narrow. Second, to avoid vastly unrealistic model precipitation rates, we were forced to place an artificial floor under the computed precipitation rate from the middle and outer plasma sheet. The computed auroral electron energy flux, plotted as a function of latitude, exhibited an exaggerated two-peak structure: one peak lies poleward of the coupled modeling region and is associated with the region-one Birkeland currents; the other peak lies at lower auroral latitudes within the coupled-modeling region, and is associated with the inner edge of the plasma sheet. When no floor was placed under the precipitation rate, the minimum between the two peaks was much too deep to be consistent with typical observations. The regions of excessively weak precipitation map to equatorial distances of 15-35 R(E) and thus to the regions of the plasma sheet that have not been included in previous self-consistent convection calculations. The most likely origin of the discrepancy is that electrons in the plasma sheet beyond 15 R(E) may not approximately satisfy the simple adiabatic condition p(e)(integral-ds/B)5/3 = constant; there is independent evidence that plasma-sheet ions violate the analogous adiabatic condition. In neither case is it clear what physical mechanism causes the violation. C1 USAF,PHILLIPS LAB,GEOPHYS DIRECTORATE,BEDFORD,MA 01731. RP WOLF, RA (reprint author), RICE UNIV,DEPT SPACE PHYS & ASTRON,HOUSTON,TX 77251, USA. NR 41 TC 44 Z9 44 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0021-9169 J9 J ATMOS TERR PHYS JI J. Atmos. Terr. Phys. PD SEP PY 1991 VL 53 IS 9 BP 817 EP 829 DI 10.1016/0021-9169(91)90096-P PG 13 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA GR919 UT WOS:A1991GR91900003 ER PT J AU BERZOFSKY, JA PENDLETON, CD CLERICI, M AHLERS, J LUCEY, DR PUTNEY, SD SHEARER, GM AF BERZOFSKY, JA PENDLETON, CD CLERICI, M AHLERS, J LUCEY, DR PUTNEY, SD SHEARER, GM TI CONSTRUCTION OF PEPTIDES ENCOMPASSING MULTIDETERMINANT CLUSTERS OF HUMAN-IMMUNODEFICIENCY-VIRUS ENVELOPE TO INDUCE INVITRO T-CELL RESPONSES IN MICE AND HUMANS OF MULTIPLE MHC TYPES SO JOURNAL OF CLINICAL INVESTIGATION LA English DT Article DE LYMPHOCYTE-T; EPITOPES; VACCINE; AIDS; HLA; HIV ID MAJOR HISTOCOMPATIBILITY COMPLEX; MALARIA-CIRCUMSPOROZOITE PROTEIN; HIV-1 INFECTION INVITRO; MYELIN BASIC-PROTEIN; TOXIC LYMPHOCYTES-T; CLASS-II; ANTIGEN RECOGNITION; FINE SPECIFICITY; PROLIFERATIVE RESPONSE; EPITOPE AB To make synthetic peptide vaccines effective in a broad population of outbred humans, one would have to incorporate enough antigenic determinants to elicit recognition by T cells of most HLA types. We have previously defined multideterminant regions of the human immunodeficiency virus (HIV) envelope that include overlapping determinants seen by proliferating T cells of three or four haplotypes of mice. We have now tested the hypothesis that synthetic peptides encompassing such multideterminant regions will be recognized by T cells of multiple murine MHC types as well as by human T cells representing multiple HLA types. Six such peptides of 20-33 residues in length were prepared, and tested for their ability to stimulate T cells from mice of four distinct MHC types immunized with recombinant envelope protein rgp160, as well as from 42 HIV-infected humans of different HLA types. Results identify several such peptides that are broadly recognized by mice of four H-2 types and by 52-73% of infected humans who still retain IL-2 productive responses to control recall antigens such as influenza A virus or tetanus toxoid. 86% of such infected donors tested against at least three peptides respond to at least one of the six peptides, and 77% of an additional group of seropositives respond to a mixture of the peptides. Moreover, the peptides can be used to immunize mice to elicit T cells reactive with the intact HIV envelope protein. These peptides therefore may be useful for both vaccine development in the broad human population, and diagnostic or prognostic use. C1 NCI,EXPTL IMMUNOL BRANCH,BETHESDA,MD 20892. WILFORD HALL USAF MED CTR,HUMAN IMMUNOVIRUS LAB,LACKLAND AFB,TX 78236. REPLIGEN CORP,CAMBRIDGE,MA 02139. RP BERZOFSKY, JA (reprint author), NCI,METAB BRANCH,MOLEC IMMUNOGENET & VACCINE RES SECT,BLDG 10,ROOM 6B-12,BETHESDA,MD 20892, USA. NR 56 TC 95 Z9 96 U1 0 U2 2 PU ROCKEFELLER UNIV PRESS PI NEW YORK PA 222 E 70TH STREET, NEW YORK, NY 10021 SN 0021-9738 J9 J CLIN INVEST JI J. Clin. Invest. PD SEP PY 1991 VL 88 IS 3 BP 876 EP 884 DI 10.1172/JCI115389 PG 9 WC Medicine, Research & Experimental SC Research & Experimental Medicine GA GD669 UT WOS:A1991GD66900021 PM 1715888 ER PT J AU FISHER, JM PALAZOTTO, AN SANDHU, RS AF FISHER, JM PALAZOTTO, AN SANDHU, RS TI A STUDY OF FAILURE CHARACTERISTICS IN THERMOPLASTIC COMPOSITE-MATERIAL AT 250-DEGREES-F (121-DEGREES-C) SO JOURNAL OF COMPOSITES TECHNOLOGY & RESEARCH LA English DT Article DE HIGH-TEMPERATURE TESTING; COMPOSITE MATERIALS; THERMOPLASTICS; FAILURE CHARACTERISTICS; STEREO X-RAYS; TESTING; THERMAL EFFECTS; LAMINATES AB A study was conducted to investigate the failure characteristics of thermoplastic composite graphite/polyetheretherketone (Gr/PEEK) at 250-degrees-F (121-degrees-C). The stacking sequences of specimens used in the study were [0-degrees]16, [90-degrees]16, [+/- 45-degrees]4s, and [0-degrees/ +/- 45-degrees/90-degrees]2s. Specimens of the first three ply layups, namely, [0-degrees]16, [90-degrees]16, and [+/- 45-degrees]4s were used to determine the basic stress-strain data at 250-degrees-F (121-degrees-C). In addition, specimens containing a hole (one-third diameter-to-width ratio) corresponding to all the four stacking sequences were manufactured to determine the stress-strain response, the progression of failure, and ultimate tensile strengths. Testing the specimens with ply layups of [+/- 45-degrees]4s and [0-degrees/ +/- 45-degrees/90-degrees]2s containing +/- 45-degrees plies was complicated by the development of high strains, thereby causing the strain gages to peel off during tests. C1 USAF,INST TECHNOL,DEPT AERONAUT & ASTRONAUT,WRIGHT PATTERSON AFB,OH 45433. USAF,WRIGHT LAB,DIV STRUCT,STRUCT CONCEPTS BRANCH,WRIGHT PATTERSON AFB,OH 45433. NR 5 TC 5 Z9 5 U1 0 U2 1 PU AMER SOC TESTING MATERIALS PI W CONSHOHOCKEN PA 100 BARR HARBOR DR, W CONSHOHOCKEN, PA 19428-2959 SN 0884-6804 J9 J COMPOS TECH RES JI J. Compos. Technol. Res. PD FAL PY 1991 VL 13 IS 3 BP 152 EP 160 PG 9 WC Materials Science, Composites; Polymer Science SC Materials Science; Polymer Science GA GG632 UT WOS:A1991GG63200002 ER PT J AU WICKRAMANAYAKE, GB GUPTA, N HINCHEE, RE NIELSEN, BJ AF WICKRAMANAYAKE, GB GUPTA, N HINCHEE, RE NIELSEN, BJ TI FREE PETROLEUM HYDROCARBON VOLUME ESTIMATES FROM MONITORING WELL DATA SO JOURNAL OF ENVIRONMENTAL ENGINEERING-ASCE LA English DT Note C1 OHIO STATE UNIV,DEPT GEOL SCI,COLUMBUS,OH 43210. BATTELLE MEM INST,COLUMBUS,OH 43201. USAF,CTR ENGN & SERV,TYNDALL AFB,FL 32403. RP WICKRAMANAYAKE, GB (reprint author), ENVIRON CORP,210 CARNEGIE CTR,PRINCETON,NJ 08540, USA. NR 13 TC 3 Z9 3 U1 0 U2 0 PU ASCE-AMER SOC CIVIL ENG PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2398 SN 0733-9372 J9 J ENVIRON ENG-ASCE JI J. Environ. Eng.-ASCE PD SEP-OCT PY 1991 VL 117 IS 5 BP 686 EP 691 DI 10.1061/(ASCE)0733-9372(1991)117:5(686) PG 6 WC Engineering, Environmental; Engineering, Civil; Environmental Sciences SC Engineering; Environmental Sciences & Ecology GA GG328 UT WOS:A1991GG32800012 ER PT J AU TAHK, M TRIKAS, T WALLACE, B AF TAHK, M TRIKAS, T WALLACE, B TI POSTFLIGHT DATA-REDUCTION TECHNIQUES FOR HOVERED KINETIC-ENERGY WEAPONS SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS LA English DT Article AB One of the major concerns in attitude control of kinetic-energy-weapon vehicles proposed for exoatmospheric engagements is that error sources such as vehicle center-of-gravity variations and thrust misalignments of divert thrusters may induce excessive parasitic torques on the vehicle. These torques may result in significant attitude perturbations that are undesirable for target tracking, especially when using strapdown seekers. In an effort to identify and characterize these error sources in a quantitative way, it has been proposed to explicitly estimate them by using the data obtained from kinetic-energy-weapon hovered interceptor test flights. An estimation procedure based on extended Kalman filtering is developed for the postflight data reduction that includes the estimation of the center-of-gravity location and thrust misalignments. Some modifications to the basic extended Kalman filter algorithm are made to reduce the sensitivity of the estimator to uncertainties in divert thrust timing. The proposed estimation scheme is then used to process simulated flight data and actual test data. The data-reduction results are provided in this paper. C1 INTEGRATED SYST INC,DEPT ADV SYST,SANTA CLARA,CA 95054. USAF,ASTRONAUT LAB,DIV AEROSP VEHICLES,AFB,CA 93523. RI TAHK, MIN-JEA/C-2002-2011 NR 4 TC 1 Z9 1 U1 0 U2 1 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0731-5090 J9 J GUID CONTROL DYNAM JI J. Guid. Control Dyn. PD SEP-OCT PY 1991 VL 14 IS 5 BP 872 EP 877 DI 10.2514/3.20726 PG 6 WC Engineering, Aerospace; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA GF532 UT WOS:A1991GF53200002 ER PT J AU HOFFMAN, WP HURLEY, WC OWENS, TW PHAN, HT AF HOFFMAN, WP HURLEY, WC OWENS, TW PHAN, HT TI ADVANTAGE OF THE SCANNING TUNNELING MICROSCOPE IN DOCUMENTING CHANGES IN CARBON-FIBER SURFACE-MORPHOLOGY BROUGHT ABOUT BY VARIOUS SURFACE TREATMENTS SO JOURNAL OF MATERIALS SCIENCE LA English DT Article ID TUNNELING MICROSCOPY; FIBER SURFACES; ACTIVE-SITES; OXYGEN AB The scanning tunnelling microscope (STM) was used to examine the surfaces of P-55 pitch-based carbon fibres before and after they had experienced various surface treatments (to < 1% weight loss), which included treatment in an argon plasma, as well as oxidation in air at elevated temperature, oxygen plasma at room temperature, nitric acid bath, and an electrochemical bath. The effects of these surface treatments on the filaments could be differentiated from the micrometre scale down to the nanometre scale. The STM has been shown to be a valuable tool for viewing the surface morphology of these 10-mu-m filaments non-destructively in air down to the atomic scale. RP HOFFMAN, WP (reprint author), USAF,ASTRONAUT LAB,AI RKPB,EDWARDS AFB,CA 93523, USA. NR 26 TC 68 Z9 70 U1 1 U2 12 PU CHAPMAN HALL LTD PI LONDON PA 2-6 BOUNDARY ROW, LONDON, ENGLAND SE1 8HN SN 0022-2461 J9 J MATER SCI JI J. Mater. Sci. PD SEP 1 PY 1991 VL 26 IS 17 BP 4545 EP 4553 DI 10.1007/BF00612388 PG 9 WC Materials Science, Multidisciplinary SC Materials Science GA GF001 UT WOS:A1991GF00100001 ER PT J AU WITTMANN, RC YAGHJIAN, AD AF WITTMANN, RC YAGHJIAN, AD TI SPHERICAL-WAVE EXPANSIONS OF PISTON-RADIATOR FIELDS SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA LA English DT Article ID AXISYMMETRIC TRANSDUCERS; BAFFLED PISTON; NEARFIELD; BOUNDARY AB Simple spherical-wave expansions of the continuous-wave fields of a circular piston radiator in a rigid baffle are derived. These expansions are valid throughout the illuminated half-space and are useful for efficient numerical computation in the near-field region. Multipole coefficients are given by closed-form expressions which can be evaluated recursively. C1 USAF,ERCT,ROME LAB,BEDFORD,MA 01731. RP WITTMANN, RC (reprint author), NATL INST STAND & TECHNOL,325 BROADWAY,BOULDER,CO 80303, USA. NR 36 TC 9 Z9 9 U1 1 U2 2 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0001-4966 J9 J ACOUST SOC AM JI J. Acoust. Soc. Am. PD SEP PY 1991 VL 90 IS 3 BP 1647 EP 1655 DI 10.1121/1.401905 PG 9 WC Acoustics; Audiology & Speech-Language Pathology SC Acoustics; Audiology & Speech-Language Pathology GA GE466 UT WOS:A1991GE46600048 PM 1939909 ER PT J AU GLASSER, H CHANG, DPY HICKMAN, DC AF GLASSER, H CHANG, DPY HICKMAN, DC TI AN ANALYSIS OF BIOMEDICAL WASTE INCINERATION SO JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION LA English DT Article ID FLY-ASH AB The California Air Resources Board (ARB) completed a series of source tests of eight operating biomedical waste incinerators (BMWI) under conditions of typical operation. The emissions of certain metals, and chlorinated dioxins and furans in the flue gases of BMWI are relatively high in comparison to emissions from other combustion sources, such as hazardous waste or municipal waste incinerators of modern design. This study reports on an analysis of the status of the existing regulatory framework and the California data base. Clarification of definitional issues at the federal level is needed to effectively treat BMWI management issues. Although few relationships among combustion parameters and emissions were uncovered, patterns of emissions were evident, suggesting commonality and relationships among the waste stream constituents and emissions. Potential implications for future research, operation of BMWI, controls and source reduction and waste segregation strategies are also discussed. C1 USAF,KIRTLAND AFB,NM 87117. RP GLASSER, H (reprint author), UNIV CALIF DAVIS,DEPT CIVIL ENGN,DAVIS,CA 95616, USA. FU NIEHS NIH HHS [ES-04699-0151] NR 35 TC 15 Z9 16 U1 0 U2 7 PU AIR & WASTE MANAGEMENT ASSOC PI PITTSBURGH PA PO BOX 2861, PITTSBURGH, PA 15230 SN 1047-3289 J9 J AIR WASTE MANAGE JI J. Air Waste Manage. Assoc. PD SEP PY 1991 VL 41 IS 9 BP 1180 EP 1188 PG 9 WC Engineering, Environmental; Environmental Sciences; Meteorology & Atmospheric Sciences SC Engineering; Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences GA GF825 UT WOS:A1991GF82500009 PM 1756039 ER PT J AU MCHUGH, CP AF MCHUGH, CP TI DISTRIBUTIONAL RECORDS FROM THE UNITED-STATES AIR-FORCE OVITRAPPING PROGRAM - 1990 SO JOURNAL OF THE AMERICAN MOSQUITO CONTROL ASSOCIATION LA English DT Note ID AEDES-ALBOPICTUS; AEGYPTI; TRISERIATUS AB During 1990, ovitrapping was conducted at 38 U.S. Air Force installations. Twelve installations were positive for Aedes albopictus. The August 24 collection of Ae. albopictus at Tinker Air Force Base, OK, is a first record for Oklahoma County. Four installations recorded the presence of Ae. aegypti; 14 installations were positive for Ae. triseriatus. During the previous 3 years, an increase in the distribution and abundance of Ae. albopictus coincided with a decline in Ae. aegypti. C1 USAF,SCH AEROSP MED,DIV EPIDEMIOL,BROOKS AFB,TX 78235. NR 5 TC 0 Z9 0 U1 0 U2 1 PU AMER MOSQUITO CONTROL ASSN INC PI LAKE CHARLES PA 707-A EAST PRIEN LAKE ROAD, PO BOX 5416, LAKE CHARLES, LA 70606-5416 SN 8756-971X J9 J AM MOSQUITO CONTR JI J. Am. Mosq. Control Assoc. PD SEP PY 1991 VL 7 IS 3 BP 498 EP 501 PG 4 WC Entomology SC Entomology GA GM633 UT WOS:A1991GM63300027 ER PT J AU HINDERS, MK TROTT, KD MOSES, HE NAGEM, RJ KONSTANTOPOULOS, D RHODES, BA SANDRI, GV AF HINDERS, MK TROTT, KD MOSES, HE NAGEM, RJ KONSTANTOPOULOS, D RHODES, BA SANDRI, GV TI TRANSMISSION THROUGH A MOVING CHIRAL SLAB SO JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS LA English DT Article ID ELECTROMAGNETIC-WAVES; MEDIA AB We consider the transmission of plane electromagnetic waves through a chiral, optically active slab that is moving at constant velocity. The incident fields are transformed to the (moving) reference frame of the slab, and the reflection and transmission coefficients are calculated in this moving frame. They are then transformed to the observer's (rest) reference frame and plotted as functions of slab velocity, thickness, and chirality. C1 USAF,ROME AIR DEV CTR,TARGET CHARACTERIZAT BRANCH,ELECTROMAGNET DIRECTORATE,BEDFORD,MA 01731. BOSTON UNIV,COLL ENGN,BOSTON,MA 02215. NR 23 TC 2 Z9 2 U1 0 U2 0 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0740-3224 J9 J OPT SOC AM B JI J. Opt. Soc. Am. B-Opt. Phys. PD SEP PY 1991 VL 8 IS 9 BP 1958 EP 1961 DI 10.1364/JOSAB.8.001958 PG 4 WC Optics SC Optics GA GD766 UT WOS:A1991GD76600023 ER PT J AU CARRAU, RL WEISSMAN, JL JANECKA, IP SNYDERMAN, CH CURTIN, HD SEKHAR, L LEE, HS AF CARRAU, RL WEISSMAN, JL JANECKA, IP SNYDERMAN, CH CURTIN, HD SEKHAR, L LEE, HS TI COMPUTERIZED-TOMOGRAPHY AND MAGNETIC-RESONANCE-IMAGING FOLLOWING CRANIAL BASE SURGERY SO LARYNGOSCOPE LA English DT Article ID SKULL BASE; RESECTION AB The computed tomography scans and magnetic resonance imaging films of 57 patients who underwent anterior or anterolateral cranial base surgery from January 1987 to August 1989 were retrospectively reviewed to ascertain the significance of early and late postoperative intracranial imaging changes. Extra-axial changes (air, blood, cerebrospinal fluid collection) were found in 96% of patients; axial changes (brain edema, contusion) were seen in 30% of patients in the first postoperative period (72 hours). Subsequently, extra-axial changes began to resolve but axial changes became more prevalent. After 6 months, only axial changes persisted (encephalomalacia). It was encouraging to find a low correlation of imaging abnormalities with clinically significant findings. C1 UNIV PITTSBURGH,SCH MED,DEPT OTOLARYNGOL,PITTSBURGH,PA 15261. UNIV PITTSBURGH,SCH MED,DEPT CLIN SCI,PITTSBURGH,PA 15261. UNIV PITTSBURGH,SCH MED,DEPT NEUROL SCI,PITTSBURGH,PA 15261. USAF,DEPT SURG,OTOLARYNGOL HEAD & NECK SURG SECT,KEESLER AFB,MS 39534. RP JANECKA, IP (reprint author), EYE & EAR INST,203 LOTHROP ST,SUITE 500,PITTSBURGH,PA 15213, USA. NR 7 TC 9 Z9 9 U1 0 U2 0 PU LARYNGOSCOPE CO PI ST LOUIS PA 10 S BROADWAY 14TH FLOOR, ST LOUIS, MO 63102-1741 SN 0023-852X J9 LARYNGOSCOPE JI Laryngoscope PD SEP PY 1991 VL 101 IS 9 BP 951 EP 959 PG 9 WC Medicine, Research & Experimental; Otorhinolaryngology SC Research & Experimental Medicine; Otorhinolaryngology GA GU624 UT WOS:A1991GU62400005 PM 1886443 ER PT J AU MAIR, EA PARSONS, DS LALLY, KP VANDELLEN, AF AF MAIR, EA PARSONS, DS LALLY, KP VANDELLEN, AF TI COMPARISON OF EXPANDABLE ENDOTRACHEAL STENTS IN THE TREATMENT OF SURGICALLY INDUCED PIGLET TRACHEOMALACIA SO LARYNGOSCOPE LA English DT Article ID BRONCHOMALACIA; INFANTS; REPAIR AB Present surgical alternatives for pediatric tracheobronchomalacia are limited and associated with many potentially undesirable complications. The feasibility of different intraluminal expandable endotracheal stents for the treatment of surgically induced tracheomalacia was analyzed in 27 piglets. A potentially fatal tracheomalacia was surgically created. Either a stainless steel "zig-zag" stent or woven polymeric stent was then implanted. Tracheal patency, mucosal function, histopathologic respiratory tract changes, and effects of the stent on esophageal motility were evaluated over a 16-week period. Piglets with steel stents uniformly experienced intense inflammation leading to tracheal dysfunction and death. Piglets with polymeric stents experienced minimal respiratory symptoms. Expandable polymeric endotracheal stents alleviate surgically induced piglet tracheomalacia, were easy to insert, allowed for tracheal growth, and reduced the need for high-risk surgical procedures with prolonged ventilatory support. C1 WILFORD HALL USAF MED CTR,PEDIAT SURG SECT,LACKLAND AFB,TX 78236. RP MAIR, EA (reprint author), WILFORD HALL USAF MED CTR,DEPT OTOLARYNGOL HEAD & NECK SURG,PEDIAT ONCOL SECT,LACKLAND AFB,TX 78236, USA. NR 19 TC 24 Z9 25 U1 0 U2 0 PU LARYNGOSCOPE CO PI ST LOUIS PA 10 S BROADWAY 14TH FLOOR, ST LOUIS, MO 63102-1741 SN 0023-852X J9 LARYNGOSCOPE JI Laryngoscope PD SEP PY 1991 VL 101 IS 9 BP 1002 EP 1008 PG 7 WC Medicine, Research & Experimental; Otorhinolaryngology SC Research & Experimental Medicine; Otorhinolaryngology GA GU624 UT WOS:A1991GU62400013 PM 1886433 ER PT J AU PRESTIDGE, BR COX, RS JOHNSON, DW AF PRESTIDGE, BR COX, RS JOHNSON, DW TI NON-SMALL-CELL LUNG-CANCER - TREATMENT RESULTS AT A USAF REFERRAL CENTER SO MILITARY MEDICINE LA English DT Article AB The treatment results of 197 consecutive patients with non-small cell carcinoma of the lung managed at David Grant USAF Medical Center between January 1978 and September 1985 were reviewed. Patients were staged according to 1983 AJCC criteria as follows: 52 stage I, 28 stage II, and 117 stage III. Five-year survival and freedom from relapse (FFR) were 24% and 32%, respectively, for the entire population. Survival and FFR by stage were: stage I, 68% and 77% (5-year); stage II, 32% and 43% (5-year); and stage III, 10% and 10% (3-year), respectively. RP PRESTIDGE, BR (reprint author), WILFORD HALL USAF MED CTR,RADIAT ONCOL SERV,SGHRT,LACKLAND AFB,TX 78236, USA. NR 0 TC 3 Z9 3 U1 0 U2 0 PU ASSN MILITARY SURG US PI BETHESDA PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 SN 0026-4075 J9 MIL MED JI Milit. Med. PD SEP PY 1991 VL 156 IS 9 BP 479 EP 483 PG 5 WC Medicine, General & Internal SC General & Internal Medicine GA GF506 UT WOS:A1991GF50600014 PM 1660112 ER PT J AU GREENBERG, MK SONODA, T AF GREENBERG, MK SONODA, T TI MONONEUROPATHY MULTIPLEX COMPLICATING IDIOPATHIC THROMBOCYTOPENIC PURPURA SO NEUROLOGY LA English DT Note AB Peripheral nerve hemorrhage has rarely been reported with idiopathic thrombocytopenic purpura (ITP). We describe a patient with severe ITP who developed mononeuropathy multiplex. At autopsy, multisystem hemorrhages were found, including intraneural hemorrhage, without evidence of extraneural hematoma. ITP represents an unusual cause for clinical mononeuropathy multiplex. C1 USAF,MALCOLM GROW MED CTR,DEPT NEUROL,WASHINGTON,DC. USAF,MALCOLM GROW MED CTR,DEPT HEMATOL,WASHINGTON,DC. NR 10 TC 10 Z9 10 U1 0 U2 0 PU LITTLE BROWN CO PI BOSTON PA 34 BEACON STREET, BOSTON, MA 02108-1493 SN 0028-3878 J9 NEUROLOGY JI Neurology PD SEP PY 1991 VL 41 IS 9 BP 1517 EP 1518 PG 2 WC Clinical Neurology SC Neurosciences & Neurology GA GF401 UT WOS:A1991GF40100040 PM 1653915 ER PT J AU HAUTH, JC HANKINS, GDV GILSTRAP, LC AF HAUTH, JC HANKINS, GDV GILSTRAP, LC TI UTERINE CONTRACTION PRESSURES ACHIEVED IN PARTURIENTS WITH ACTIVE PHASE ARREST SO OBSTETRICS AND GYNECOLOGY LA English DT Article ID CESAREAN-SECTION; AUGMENTATION; LABOR AB An adequate trial of labor preceding cesarean delivery for arrest of cervical dilatation in the active phase of labor has not been defined precisely. We reviewed the records of 85 consecutive women at term who received oxytocin for induction or augmentation of labor and who subsequently delivered by cesarean for arrest of labor in the active phase. The mean duration of oxytocin infusion was 15 hours for induction of labor and 8.9 hours for augmentation. Thirty-four (92%) of the 37 women who received oxytocin induction and 44 (92%) of the 48 who had oxytocin for augmentation achieved at least 200 Montevideo units of uterine pressure. All 85 newborns were vigorous at birth and had no complications during their stay in the hospital nursery. Evaluation of uterine contraction pressure can provide a quantifiable end point for the management of oxytocin induction or augmentation of labor. C1 WILFORD HALL USAF MED CTR,DEPT OBSTET & GYNECOL,LACKLAND AFB,TX 78236. NR 14 TC 11 Z9 11 U1 0 U2 0 PU ELSEVIER SCIENCE INC PI NEW YORK PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 SN 0029-7844 J9 OBSTET GYNECOL JI Obstet. Gynecol. PD SEP PY 1991 VL 78 IS 3 BP 344 EP 347 PN 1 PG 4 WC Obstetrics & Gynecology SC Obstetrics & Gynecology GA GC368 UT WOS:A1991GC36800006 PM 1876362 ER PT J AU FOGARTY, TJ MONTGOMERY, S AF FOGARTY, TJ MONTGOMERY, S TI EFFECT OF PREFLARING ON CANAL TRANSPORTATION - EVALUATION OF ULTRASONIC, SONIC, AND CONVENTIONAL TECHNIQUES SO ORAL SURGERY ORAL MEDICINE ORAL PATHOLOGY ORAL RADIOLOGY AND ENDODONTICS LA English DT Article ID ROOT CANALS; MOLARS AB This study evaluated the effect on canal transportation when acrylic canals were preflared with Peeso reamers before the use of ultrasonic, sonic, and hand instrumentation techniques. Twenty resin blocks with simulated curved root canals were shaped with each technique to a size 40 file 0.5 mm from the apical foramen. Ten of the canals were preflared in the cervical region with No. 1 and No. 2 Peeso reamers before instrumentation; 10 canals that were not preflared served as controls. Transportation was measured on the inside canal curvature 3 mm from the canal orifice and 8 mm cervical to the working length, and on the outside canal curvature 1 mm cervical to the working length. Statistical analysis with Student's t test did not show a significant reduction in canal transportation for the preflared groups. In some areas the amount of transportation was less for the preflared groups; in other areas it was greater. C1 UNIV TEXAS,HLTH SCI CTR,DEPT ENDODONT,7703 FLOYD CURL DR,SAN ANTONIO,TX 78284. WILFORD HALL USAF MED CTR,DEPT ENDODONT,LACKLAND AFB,TX 78236. NR 22 TC 4 Z9 4 U1 0 U2 2 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 1079-2104 J9 ORAL SURG ORAL MED O JI Oral Surg. Oral Med. Oral Pathol. Oral Radiol. Endod. PD SEP PY 1991 VL 72 IS 3 BP 345 EP 350 DI 10.1016/0030-4220(91)90231-Z PG 6 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA GF748 UT WOS:A1991GF74800020 PM 1923425 ER PT J AU BRANNON, RB FOWLER, CB HARTMAN, KS AF BRANNON, RB FOWLER, CB HARTMAN, KS TI NECROTIZING SIALOMETAPLASIA - A CLINICOPATHOLOGICAL STUDY OF 69 CASES AND REVIEW OF THE LITERATURE SO ORAL SURGERY ORAL MEDICINE ORAL PATHOLOGY ORAL RADIOLOGY AND ENDODONTOLOGY LA English DT Article ID NASAL CAVITY; SIMULATING MALIGNANCY; PALATE; CARCINOMA; GLANDS AB The clinicopathologic findings in 69 cases of necrotizing sialometaplasia (NS) were analyzed and compared with 115 reported cases of NS in the English-language literature. Data comparing age, sex, race, location, clinical presentation, and possible predisposing factors are summarized. Analysis of the data indicates that NS can occur in a variety of clinical settings and may exhibit a spectrum of histologic features. Recognition of NS, regardless of its clinical or microscopic presentation, is essential to avoid inappropriate or unnecessary treatment for this benign reactive process. C1 WILFORD HALL USAF MED CTR, DEPT ORAL PATHOL, SGDM, LACKLAND AFB, TX 78236 USA. ARMED FORCES INST PATHOL, CTR ADV PATHOL, WASHINGTON, DC 20306 USA. NR 73 TC 62 Z9 64 U1 0 U2 0 PU MOSBY-ELSEVIER PI NEW YORK PA 360 PARK AVENUE SOUTH, NEW YORK, NY 10010-1710 USA SN 1079-2104 EI 1528-395X J9 ORAL SURG ORAL MED O JI Oral Surg. Oral Med. Oral Pathol. Oral Radiol. Endod. PD SEP PY 1991 VL 72 IS 3 BP 317 EP 325 DI 10.1016/0030-4220(91)90225-2 PG 9 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA GF748 UT WOS:A1991GF74800014 PM 1923419 ER PT J AU BLACK, WG AF BLACK, WG TI SOCIAL-WORK IN WORLD-WAR-I - A METHOD LOST SO SOCIAL SERVICE REVIEW LA English DT Article RP BLACK, WG (reprint author), USAF,FAMILY PRACTICE RESIDENCY PROGRAM,EGLIN AFB,FL 32542, USA. NR 70 TC 5 Z9 5 U1 0 U2 0 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0037-7961 J9 SOC SERV REV JI Soc. Serv. Rev. PD SEP PY 1991 VL 65 IS 3 BP 379 EP 402 PG 24 WC Social Work SC Social Work GA GD102 UT WOS:A1991GD10200003 ER PT J AU CRUMBAKER, TE HAFICH, MJ ROBINSON, GY JONES, KM ALJASSIM, MM DAVIS, A LORENZO, JP AF CRUMBAKER, TE HAFICH, MJ ROBINSON, GY JONES, KM ALJASSIM, MM DAVIS, A LORENZO, JP TI THE INFLUENCE OF DISLOCATION DENSITY ON ELECTRON-MOBILITY IN INP FILMS ON SI SO APPLIED PHYSICS LETTERS LA English DT Article ID MOLECULAR-BEAM EPITAXY; HETEROEPITAXIAL GROWTH; REDUCTION AB The average electron mobility and dislocation density have been measured as functions of the film thickness in InP films grown on Si substrates by gas-source molecular beam epitaxy. In a region extending about 2-mu-m from the Si interface, the density of dislocations was found to be very high and clustering of dislocations was observed by transmission electron microscopy. The corresponding mobility was very small. Beyond 2-mu-m, clustering was not observed, the density of dislocations decreased, and the average mobility increased with increasing film thickness. Thus, the threading dislocations created by the large InP/Si lattice mismatch can significantly degrade the free carrier mobility of the InP film. C1 SOLAR ENERGY RES INST,GOLDEN,CO 80401. USAF,ROME LAB,BEDFORD,MA 01731. COLORADO STATE UNIV,CTR OPTOELECTR COMP SYST,FT COLLINS,CO 80523. RP CRUMBAKER, TE (reprint author), COLORADO STATE UNIV,DEPT ELECT ENGN,FT COLLINS,CO 80523, USA. NR 11 TC 10 Z9 10 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 26 PY 1991 VL 59 IS 9 BP 1090 EP 1092 DI 10.1063/1.106353 PG 3 WC Physics, Applied SC Physics GA GC329 UT WOS:A1991GC32900030 ER PT J AU WRIGHT, JR AF WRIGHT, JR TI UNITED-STATES PARTICIPATION IN THE CHEMISTRY OLYMPIAD SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USAF ACAD,PREPARATORY SCH,COLORADO SPRINGS,CO 80840. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 25 PY 1991 VL 202 BP 11 EP CHED PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA HG080 UT WOS:A1991HG08001054 ER PT J AU MY, DT MINHHOA, DT EVERS, RC AF MY, DT MINHHOA, DT EVERS, RC TI RIGID-ROD BENZOBISTHIAZOLE POLYMER WITH REACTIVE 2,6-DIMETHYLPHENOXY PENDENT GROUPS - SYNTHESIS AND CHARACTERIZATION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV DAYTON,RES INST,DAYTON,OH 45469. WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 25 PY 1991 VL 202 BP 18 EP PMSE PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA HG081 UT WOS:A1991HG08101286 ER PT J AU SANTHOSH, U DOTRONG, MH SONG, HH LEE, CYC AF SANTHOSH, U DOTRONG, MH SONG, HH LEE, CYC TI RIGID-ROD BENZOBISTHIAZOLE POLYMER WITH REACTIVE 2,6-DIMETHYLPHENOXY PENDENT GROUPS - PROCESSING, MECHANICAL-PROPERTIES AND MORPHOLOGY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ADTECH SYST RES INC,DAYTON,OH 45432. UNIV DAYTON,RES INST,DAYTON,OH 45469. WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 25 PY 1991 VL 202 BP 19 EP PMSE PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA HG081 UT WOS:A1991HG08101287 ER PT J AU DANG, TD ARCHIBALD, TG MALIK, AA BONSU, FO BAUM, K TAN, LS ARNOLD, FE AF DANG, TD ARCHIBALD, TG MALIK, AA BONSU, FO BAUM, K TAN, LS ARNOLD, FE TI VISIBLE-TRANSPARENT RIGID-ROD POLYMERS - SYNTHESIS AND CHARACTERIZATION OF DIAMANTANE-BASED POLYBENZAZOLES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV DAYTON,RES INST,DAYTON,OH 45469. FLUOROCHEM INC,AZUSA,CA 91702. WRIGHT LAB,MLBP,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 25 PY 1991 VL 202 BP 28 EP POLY PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA HG081 UT WOS:A1991HG08100930 ER PT J AU DOTRONG, M DOTRONG, M MOORE, GJ EVERS, RC AF DOTRONG, M DOTRONG, M MOORE, GJ EVERS, RC TI COLORLESS RIGID-ROD POLYMERS CONTAINING BICYCLO[2.2.2] OCTANE MOIETIES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 WRIGHT LAB, WRIGHT PATTERSON AFB, OH 45433 USA. UNIV DAYTON, RES INST, DAYTON, OH 45469 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 25 PY 1991 VL 202 BP 29 EP POLY PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA HG081 UT WOS:A1991HG08100931 ER PT J AU SOREF, RA AF SOREF, RA TI OPTICAL BAND-GAP OF THE TERNARY SEMICONDUCTOR SI1-X-YGEXCY SO JOURNAL OF APPLIED PHYSICS LA English DT Note ID DIAMOND AB Single-crystal alloys of diamond with Si and Ge are investigated theoretically. An indirect band gap GAMMA-upsilon-25' --> DELTA-1c is found for the new semiconductor Si1-x-yGe(x)C(y) over most compositions x and y, with an indirect GAMMA-upsilon-25' --> L(c)1 gap found for the remaining compositions. The estimated band gaps span the 0.62-5.5-eV-range. Predictions are made for band gap versus lattice parameter in the new alloy semiconductors Si1-xC(x) and Ge1-xC(x). RP SOREF, RA (reprint author), USAF,ROME LAB,RL ERO,BEDFORD,MA 01731, USA. NR 6 TC 149 Z9 150 U1 1 U2 3 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD AUG 15 PY 1991 VL 70 IS 4 BP 2470 EP 2472 DI 10.1063/1.349403 PG 3 WC Physics, Applied SC Physics GA GC098 UT WOS:A1991GC09800089 ER PT J AU KHOURY, J RYAN, V WOODS, C CRONINGOLOMB, M AF KHOURY, J RYAN, V WOODS, C CRONINGOLOMB, M TI PHOTOREFRACTIVE TIME CORRELATION MOTION DETECTION SO OPTICS COMMUNICATIONS LA English DT Article ID ERASURE AB A photorefractive time correlation motion detector is demonstrated. This device overcomes the material response time limitation associated with other photorefractive motion detectors. Two techniques have been proposed to increase and tune the bandwidth of the motion detection device. RP KHOURY, J (reprint author), USAF,OPT SIGNAL PROC BRANCH,ROME LAB,BEDFORD,MA 01731, USA. RI Cronin-Golomb, Mark/A-5430-2012 OI Cronin-Golomb, Mark/0000-0002-8936-4358 NR 8 TC 10 Z9 10 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0030-4018 J9 OPT COMMUN JI Opt. Commun. PD AUG 15 PY 1991 VL 85 IS 1 BP 5 EP 9 DI 10.1016/0030-4018(91)90042-C PG 5 WC Optics SC Optics GA GE599 UT WOS:A1991GE59900002 ER PT J AU JAUCHEM, JR AF JAUCHEM, JR TI VIDEO DISPLAY TERMINALS SO CHEMICAL & ENGINEERING NEWS LA English DT Letter C1 ARMSTRONG LAB,BROOKS AFB,TX. NR 5 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0009-2347 J9 CHEM ENG NEWS JI Chem. Eng. News PD AUG 12 PY 1991 VL 69 IS 32 BP 2 EP 2 PG 1 WC Chemistry, Multidisciplinary; Engineering, Chemical SC Chemistry; Engineering GA GA424 UT WOS:A1991GA42400002 ER PT J AU KRAMER, MA WETTERER, CJ MARTINEZ, T AF KRAMER, MA WETTERER, CJ MARTINEZ, T TI ONE-WAY IMAGING THROUGH AN ABERRATOR WITH SPATIALLY INCOHERENT-LIGHT BY USING AN OPTICALLY ADDRESSED SPATIAL LIGHT-MODULATOR SO APPLIED OPTICS LA English DT Article ID PHASE-CONJUGATION; POINT REFLECTOR; CRYSTAL; TRANSMISSION; POWER AB A real-time holographic technique employing an optically addressed spatial light modulator was used to correct an incoherently illuminated image that had made a single pass through an aberrator. Aberrations that change slowly compared with the integration time of the spatial light modulator are fully corrected. RP KRAMER, MA (reprint author), USAF,SYST COMMAND,PHILLIPS LAB,PL AR-N,KIRTLAND AFB,NM 87117, USA. NR 21 TC 35 Z9 35 U1 0 U2 0 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD AUG 10 PY 1991 VL 30 IS 23 BP 3319 EP 3323 PG 5 WC Optics SC Optics GA FZ850 UT WOS:A1991FZ85000011 PM 20706396 ER PT J AU BRODY, AS STRONG, M BABIKIAN, G SWEET, DE SEIDEL, FG KUHN, JP AF BRODY, AS STRONG, M BABIKIAN, G SWEET, DE SEIDEL, FG KUHN, JP TI AVASCULAR NECROSIS - EARLY MR IMAGING AND HISTOLOGIC-FINDINGS IN A CANINE MODEL SO AMERICAN JOURNAL OF ROENTGENOLOGY LA English DT Article ID MAGNETIC-RESONANCE; FEMORAL-HEAD; OSTEONECROSIS; HIP AB To examine the early MR and histologic changes of avascular necrosis, we surgically devascularized the distal femur of adult beagle dogs and performed short TR/short TE MR imaging and histologic examinations. MR showed increasing areas of low signal, and histologic examination showed changes of fat necrosis, inflammatory infiltrate, and fibrocytic and bony repair. These processes were divided into four stages. Stage 1 is seen in the first days after surgery and consists of homogeneous high signal on MR and only subtle histologic changes of early fat necrosis. Stage 2, seen by 7 days after surgery, shows linear low-signal areas within the high-signal marrow on MR and fat necrosis and an inflammatory infiltrate on histologic sections. Stage 3, seen by 16 days after surgery, shows patchy low signal occupying more of the marrow on MR with a fibrocytic infiltrate on histologic sections. Stage 4, seen by 23 days after surgery, shows a more homogeneous low and intermediate signal on MR and histologic findings of more organized fibrocytes and the onset of new bone formation. Using this model, we have proved that MR imaging can show marrow changes as soon as 1 week after the onset of avascular necrosis. Whereas MR imaging showed a progression of increasing areas of low signal, the histologic findings seen during this time were diverse, including inflammatory infiltration (a previously unreported finding), fat necrosis, and fibrocytic and osseous repair. C1 CHILDRENS HOSP BUFFALO,DEPT ORTHOPAED SURG,BUFFALO,NY 14222. USAF,INST PATHOL,WASHINGTON,DC 20306. RP BRODY, AS (reprint author), CHILDRENS HOSP BUFFALO,DEPT RADIOL,219 BRYANT ST,BUFFALO,NY 14222, USA. NR 12 TC 50 Z9 53 U1 0 U2 0 PU AMER ROENTGEN RAY SOC PI RESTON PA 1891 PRESTON WHITE DR SUBSCRIPTION FULFILLMENT, RESTON, VA 22091 SN 0361-803X J9 AM J ROENTGENOL JI Am. J. Roentgenol. PD AUG PY 1991 VL 157 IS 2 BP 341 EP 345 PG 5 WC Radiology, Nuclear Medicine & Medical Imaging SC Radiology, Nuclear Medicine & Medical Imaging GA FX466 UT WOS:A1991FX46600027 PM 1853819 ER PT J AU BAXA, MD AF BAXA, MD TI CARDIAC RUPTURE SECONDARY TO BLUNT TRAUMA - A RAPIDLY DIAGNOSABLE ENTITY WITH 2-DIMENSIONAL ECHOCARDIOGRAPHY SO ANNALS OF EMERGENCY MEDICINE LA English DT Article DE CARDIAC RUPTURE; 2-DIMENSIONAL ECHOCARDIOGRAPHY AB A 58-year-old woman involved in a single automobile accident sustained an isolated rupture of the right ventricle without any other obvious form of external trauma. On presentation to an outlying hospital, hypotension was the only apparent clinical finding suggestive of injury. After several hours of delay, the patient was transferred to a tertiary medical center. The diagnosis of cardiac rupture was made by two-dimensional echocardiography. The patient underwent successful surgical repair and was discharged home in good condition eight days after sustaining this potentially fatal injury. RP BAXA, MD (reprint author), USAF,DEPT EMERGENCY MED,WASHINGTON,DC 20331, USA. NR 0 TC 12 Z9 12 U1 0 U2 0 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0196-0644 J9 ANN EMERG MED JI Ann. Emerg. Med. PD AUG PY 1991 VL 20 IS 8 BP 902 EP 904 DI 10.1016/S0196-0644(05)81435-0 PG 3 WC Emergency Medicine SC Emergency Medicine GA FZ167 UT WOS:A1991FZ16700015 PM 1854076 ER PT J AU WATSON, SM MILLS, JP GAISER, SL DINER, DJ AF WATSON, SM MILLS, JP GAISER, SL DINER, DJ TI DIRECT IMAGING OF NONSOLAR PLANETS WITH INFRARED TELESCOPES USING APODIZED CORONAGRAPHS SO APPLIED OPTICS LA English DT Article ID SYSTEMS; ARRAY AB This research examines the use of modified Lyot coronagraphs with monolithic and segmented infrared telescopic systems for imaging nonsolar planets. These systems are investigated with the aim of reducing the effects of stellar diffracted energy on the planet image in the final image plane. A square telescope objective is best for this purpose. The associated coronagraph is composed of a cross-shaped apodizer in the first focal plane and either a square Lyot stop or circular corner Lyot stops in the corners of the pupil plane. We examine the consequences of segmenting the aperture and the effects of various segment spacings and random piston and tilt errors of the individual segments. A system to correct for the misalignments is proposed. C1 CALTECH,JET PROP LAB,ATMOSPHER & COMETARY SCI SECT,PASADENA,CA 91109. RP WATSON, SM (reprint author), 4950TH TEST WING,4950TW-FFCE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 17 TC 20 Z9 20 U1 0 U2 0 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD AUG 1 PY 1991 VL 30 IS 22 BP 3253 EP 3262 PG 10 WC Optics SC Optics GA FY055 UT WOS:A1991FY05500028 PM 20706384 ER PT J AU SARTORI, CR BAKER, EJ HOBBS, ER AF SARTORI, CR BAKER, EJ HOBBS, ER TI COSTAL FRINGE SO ARCHIVES OF DERMATOLOGY LA English DT Article ID TELANGIECTASIA; CIRRHOSIS AB Costal fringe consists of a bandlike pattern of venous telangiectases along the anterolateral costal margins. It is a common and easily recognized entity, usually seen in elderly men. Association with underlying disease is not well established. To assess the frequency of costal fringe in a healthy young adult population, we examined 1523 active duty Air Force personnel (1203 men and 320 women) between the ages of 17 and 34 years. All subjects were human immunodeficiency virus seronegative; none had known hyperestrogenic or other disease states. Costal fringe was present in only three individuals, all men, a frequency of 0.2%. Costal fringe is a rare finding in healthy young adults. C1 USAF,CLIN LOWRY,LOWRY AFB,CO. RP SARTORI, CR (reprint author), WILFORD HALL USAF MED CTR,DEPT DERMATOL,SGHMD,LACKLAND AFB,TX 78236, USA. NR 8 TC 3 Z9 3 U1 0 U2 0 PU AMER MEDICAL ASSOC PI CHICAGO PA 515 N STATE ST, CHICAGO, IL 60610 SN 0003-987X J9 ARCH DERMATOL JI Arch. Dermatol. PD AUG PY 1991 VL 127 IS 8 BP 1201 EP 1202 PG 2 WC Dermatology SC Dermatology GA GA977 UT WOS:A1991GA97700013 PM 1863080 ER PT J AU BARGER, J AF BARGER, J TI PREPARING FOR WAR - LESSONS LEARNED FROM UNITED-STATES-ARMY FLIGHT NURSES OF WORLD-WAR-II SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article AB The combat posture of today's military forces, and more specifically the emphasis on medical readiness for members of the health care professions, shows that the involvement of flight nurses in armed conflict cannot be ruled out. As part of a larger study of how military nurses cope with war, 25 former U.S. Army flight nurses of World War II were interviewed to learn how they coped with wartime situations they perceived as taxing or exceeding their resources. The purpose of this paper is to describe those aspects of wartime nursing that flight nurses interviewed would like to have been different and, subsequently, what advice they would offer today's flight nurses. The responses are examined within the theoretical framework of stress, appraisal, and coping developed by Lazarus and colleagues. C1 USAF,MED CTR,SGHNM,LACKLAND AFB,TX 78236. NR 4 TC 1 Z9 1 U1 1 U2 1 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD AUG PY 1991 VL 62 IS 8 BP 772 EP 775 PG 4 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA FZ249 UT WOS:A1991FZ24900010 PM 1930059 ER PT J AU MITCHELL, GW AF MITCHELL, GW TI RAPID ONSET OF SEVERE HEAT ILLNESS - A CASE-REPORT SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article ID HELICOPTER AB Aviators flying extended periods in hot environments are known to be at risk for heat-related illness. The risk when wearing chemical individual protective equipment (IPE) is increased even at relatively warm temperatures and light workloads. In this paper, we report the physiological responses of an aviator who had been flying a UH-1H helicopter up to 6 h/d clothed in full IPE on 6 consecutive days prior to the sudden onset of heat illness. His performance during the study was normal, and no clear physiological derangements were noted prior to his symptoms. The rapid evolution of his symptoms after voicing no complaints provides a graphic illustration of the difficult predictability and initial central nervous system effects of this condition. C1 AEROMED CONSULTAT SERV,FLIGHT MED BRANCH,BROOKS AFB,TX. RP MITCHELL, GW (reprint author), USA,AEROMED RES LAB,CTR SCI INFORMAT,POB 577,FT RUCKER,AL 35362, USA. NR 10 TC 0 Z9 0 U1 0 U2 0 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD AUG PY 1991 VL 62 IS 8 BP 779 EP 782 PG 4 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA FZ249 UT WOS:A1991FZ24900012 PM 1930061 ER PT J AU COPELAN, EA BIGGS, JC THOMPSON, JM CRILLEY, P SZER, J KLEIN, JP KAPOOR, N AVALOS, BR CUNNINGHAM, I ATKINSON, K DOWNS, K HARMON, GS DALY, MB BRODSKY, I BULOVA, SI TUTSCHKA, PJ AF COPELAN, EA BIGGS, JC THOMPSON, JM CRILLEY, P SZER, J KLEIN, JP KAPOOR, N AVALOS, BR CUNNINGHAM, I ATKINSON, K DOWNS, K HARMON, GS DALY, MB BRODSKY, I BULOVA, SI TUTSCHKA, PJ TI TREATMENT FOR ACUTE MYELOCYTIC-LEUKEMIA WITH ALLOGENEIC BONE-MARROW TRANSPLANTATION FOLLOWING PREPARATION WITH BUCY2 SO BLOOD LA English DT Article ID ACUTE NONLYMPHOCYTIC LEUKEMIA; ACUTE MYELOGENOUS LEUKEMIA; VENO-OCCLUSIVE DISEASE; HOST-DISEASE; ACUTE GRAFT; BUSULFAN; CYCLOPHOSPHAMIDE; RECIPIENTS C1 OHIO STATE UNIV,DEPT INTERNAL MED,COLUMBUS,OH 43210. OHIO STATE UNIV,DEPT STAT,COLUMBUS,OH 43210. ST VINCENTS HOSP,DEPT HAEMATOL,SYDNEY,NSW 2010,AUSTRALIA. USAF,WILFORD HALL MED CTR,DEPT HEMATOL ONCOL,LACKLAND AFB,TX 78236. HAHNEMANN UNIV,DEPT NEOPLAST DIS,PHILADELPHIA,PA 19102. ALFRED HOSP,BONE MARROW TRANSPLANT UNIT,MELBOURNE,AUSTRALIA. OI Szer, Jeff/0000-0001-6783-2301 FU NCI NIH HHS [2 P30 CA]; PHS HHS [16058-16A1] NR 26 TC 150 Z9 150 U1 0 U2 1 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0006-4971 J9 BLOOD JI Blood PD AUG 1 PY 1991 VL 78 IS 3 BP 838 EP 843 PG 6 WC Hematology SC Hematology GA FZ566 UT WOS:A1991FZ56600040 PM 1859895 ER PT J AU PORTER, DB AF PORTER, DB TI COMPUTER GAMES AND COGNITIVE-PROCESSES - 2 TASKS, 2 MODES, TOO MUCH SO BRITISH JOURNAL OF PSYCHOLOGY LA English DT Article ID PERFORMANCE; KNOWLEDGE; IMPLICIT C1 UNIV OXFORD,OXFORD,ENGLAND. RP PORTER, DB (reprint author), USAF ACAD,COLORADO SPRINGS,CO 80840, USA. NR 25 TC 6 Z9 6 U1 6 U2 7 PU BRITISH PSYCHOLOGICAL SOC PI LEICESTER PA ST ANDREWS HOUSE, 48, PRINCESS RD, EAST, LEICESTER, LEICS, ENGLAND LE1 7DR SN 0007-1269 J9 BRIT J PSYCHOL JI Br. J. Psychol. PD AUG PY 1991 VL 82 BP 343 EP 357 PN 3 PG 15 WC Psychology, Multidisciplinary SC Psychology GA GF985 UT WOS:A1991GF98500006 ER PT J AU SIMPSON, RL AF SIMPSON, RL TI COMPUTER VISION - AN OVERVIEW SO IEEE EXPERT-INTELLIGENT SYSTEMS & THEIR APPLICATIONS LA English DT Review C1 USAF,WASHINGTON,DC 20330. NR 0 TC 2 Z9 2 U1 0 U2 0 PU IEEE COMPUTER SOC PI LOS ALAMITOS PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1264 SN 0885-9000 J9 IEEE EXPERT JI IEEE Expert-Intell. Syst. Appl. PD AUG PY 1991 VL 6 IS 4 BP 11 EP 15 DI 10.1109/64.85917 PG 5 WC Computer Science, Artificial Intelligence; Engineering, Electrical & Electronic SC Computer Science; Engineering GA GB778 UT WOS:A1991GB77800003 ER PT J AU KIM, YW DIMIDUK, DM AF KIM, YW DIMIDUK, DM TI PROGRESS IN THE UNDERSTANDING OF GAMMA TITANIUM ALUMINIDES SO JOM-JOURNAL OF THE MINERALS METALS & MATERIALS SOCIETY LA English DT Review ID POSITIVE TEMPERATURE-DEPENDENCE; INTERMETALLIC COMPOUND; YIELD STRESS; DEFORMATION; DISSOCIATION; DUCTILITY; ALLOYS; PURITY AB During the last two years remarkable improvements have been made in the properties (such as toughness and creep) and processing technology of gamma titanium aluminides, making them potentially viable engineering alloys for high-temperature structural applications. These achievements were made possible by a greater understanding of both the fundamental and the practical aspects of these aluminides, such as phase relationships, the effects of alloying elements, deformation mechanisms, microstructure evolution and processing. This article reviews the current understanding of the above specific aspects and the processing-microstructure-property relationships, and identifies pacing problems and applications. C1 USAF,WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433. RP KIM, YW (reprint author), UNIV DAYTON,METCUT MAT RES GRP,DAYTON,OH 45469, USA. NR 61 TC 625 Z9 659 U1 6 U2 28 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 1047-4838 J9 JOM-J MIN MET MAT S JI JOM-J. Miner. Met. Mater. Soc. PD AUG PY 1991 VL 43 IS 8 BP 40 EP 47 PG 8 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Mineralogy; Mining & Mineral Processing SC Materials Science; Metallurgy & Metallurgical Engineering; Mineralogy; Mining & Mineral Processing GA GF828 UT WOS:A1991GF82800008 ER PT J AU MENA, RA SANDERS, GD BAJAJ, KK DUDLEY, SC AF MENA, RA SANDERS, GD BAJAJ, KK DUDLEY, SC TI THEORY OF THE EFFECT OF MAGNETIC-FIELD ON THE EXCITONIC PHOTOLUMINESCENCE LINEWIDTH IN SEMICONDUCTOR ALLOYS SO JOURNAL OF APPLIED PHYSICS LA English DT Note ID SPECTRA AB We report a calculation on the effect of the magnetic field on the excitonic photoluminescence linewidth in intentionally undoped semiconductor alloys. We assume that the dominant mechanism for the line broadening is due to the potential fluctuations caused by the disorder of the components of the alloy. Variations in the local concentrations from the global value are accounted for by using statistical mechanical arguments developed by Lifshitz [Adv. Physics 13, 483 (1965)] and then related to the linewidth. When a magnetic field is applied to the system, the effective volume of the optical probe, namely, the excition, is reduced causing it to become more responsive to the statistical potential fluctuations. This results in the broadening of the photoluminescence line as a function of the magnetic field. Variation of the excitonic linewidth as a function of the magnetic field and alloy composition in Al(x)Ga1-xAs is presented. C1 ARIZONA STATE UNIV,CTR SOLID STATE ELECTR,DEPT ELECT ENGN,TEMPE,AZ 85287. USAF ACAD,DEPT PHYS,COLORADO SPRINGS,CO 80840. NR 11 TC 22 Z9 22 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD AUG 1 PY 1991 VL 70 IS 3 BP 1866 EP 1868 DI 10.1063/1.349509 PG 3 WC Physics, Applied SC Physics GA GA100 UT WOS:A1991GA10000116 ER PT J AU FEJER, BG ANDERSON, DN FUKAO, S ABDU, MA AF FEJER, BG ANDERSON, DN FUKAO, S ABDU, MA TI A SELECTION OF PAPERS PRESENTED AT THE 8TH INTERNATIONAL-SYMPOSIUM ON EQUATORIAL AERONOMY (ISEA) - HELD IN SAN-MIGUEL-DE-TUCUMAN, ARGENTINA, 21-27 MARCH 1990 - PREFACE SO JOURNAL OF ATMOSPHERIC AND TERRESTRIAL PHYSICS LA English DT Editorial Material C1 INST PESQUISAS ESPACIAIS,SAO JOSE CAMPOS,BRAZIL. RP FEJER, BG (reprint author), USAF,SC,BEDFORD,MA 01731, USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0021-9169 J9 J ATMOS TERR PHYS JI J. Atmos. Terr. Phys. PD AUG PY 1991 VL 53 IS 8 BP 663 EP 664 DI 10.1016/0021-9169(91)90119-R PG 2 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA GR865 UT WOS:A1991GR86500001 ER PT J AU GRIMWOOD, RE THARP, MD AF GRIMWOOD, RE THARP, MD TI GROWTH OF HUMAN BASAL-CELL CARCINOMAS TRANSPLANTED TO C57/BALB/C BGJ/BGJ-NU/NU (BEIGE-NUDE) MICE SO JOURNAL OF DERMATOLOGIC SURGERY AND ONCOLOGY LA English DT Article ID HUMAN MAST-CELLS; ATHYMIC MICE AB The purpose of this study was to measure growth parameters of transplanted basal cell carcinoma (BCC) to beige-nude mice during a 4-month observation time. Forty male beige-nude mice were transplanted with human BCC with our reported subcutaneous implantation technique. Initial volume and wet weight were determined for each tumor. The tumors were measured every 2 weeks by calipers with a final volume determined at 120 days, at which time the tumors were harvested, weighed, and processed for routine histology. Thirty-two tumor sites were positive for persistent tumor at harvest. Tumor volumes declined by an average of 51% and average tumor weight by 33%. There were increased numbers of mast cells surrounding the BCC tumor lobules. These results indicate that BCC can survive for 120 days in the beige-nude mouse. C1 WILFORD HALL USAF MED CTR,DEPT DERMATOL,LACKLAND AFB,TX 78236. UNIV PITTSBURGH,PITTSBURGH,PA 15260. FU NCI NIH HHS [CA485539-R01, R23CA4215-01] NR 19 TC 7 Z9 7 U1 0 U2 0 PU ELSEVIER SCIENCE INC PI NEW YORK PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 SN 0148-0812 J9 J DERMATOL SURG ONC PD AUG PY 1991 VL 17 IS 8 BP 661 EP 666 PG 6 WC Oncology; Dermatology; Surgery SC Oncology; Dermatology; Surgery GA FZ512 UT WOS:A1991FZ51200007 PM 1885829 ER PT J AU FRANKE, ME HOGUE, LE AF FRANKE, ME HOGUE, LE TI ELECTROSTATIC COOLING OF A HORIZONTAL CYLINDER SO JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME LA English DT Article DE AUGMENTATION AND ENHANCEMENT; ELECTRONIC EQUIPMENT; NATURAL CONVECTION ID CORONA AB The effects of corona wind on the heat transfer rate from a heated horizontal cylinder are described. Corona discharge and a corona wind are developed when a high voltage is applied to an electrode (emitter) near a grounded surface. In this study the corona wind is directed toward the lower region of the grounded cylinder by placing either a positively charged single-wire emitter or multipoint emitter parallel to and directly below the heated cylinder. Heat transfer rates from the heated cylinder under free convection conditions with and without a corona wind are obtained by measuring the power input to the cylinder. Free convection rates are also obtained from interferometer photographs. Free convection heat transfer rates are increased several times by the corona wind. C1 USAF,WASHINGTON,DC 20330. USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433. NR 9 TC 25 Z9 27 U1 1 U2 4 PU ASME-AMER SOC MECHANICAL ENG PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 0022-1481 J9 J HEAT TRANS-T ASME JI J. Heat Transf.-Trans. ASME PD AUG PY 1991 VL 113 IS 3 BP 544 EP 548 DI 10.1115/1.2910597 PG 5 WC Thermodynamics; Engineering, Mechanical SC Thermodynamics; Engineering GA HP760 UT WOS:A1991HP76000004 ER PT J AU BROWN, FH HOUSTON, GD AF BROWN, FH HOUSTON, GD TI SMOKERS MELANOSIS - A CASE-REPORT SO JOURNAL OF PERIODONTOLOGY LA English DT Article DE MOUTH NEOPLASMS; MELANOMA, BENIGN DIAGNOSIS ID ORAL-MUCOSA; PIGMENTATION; MACULE AB SMOKER'S MELANOSIS IS A BENIGN pigmentation of the oral mucosa, predominantly observed on the attached anterior mandibular gingiva and interdental papillae. These macular lesions are independent of genetic factors, therapeutic medication usage, and various systemic disorders. As a group they are often seen after the third decade of life. Due to the onset in adulthood and the progressive darkening, malignant melanoma must be ruled out. A review of the literature and a case report of this interesting and unique entity is presented. C1 WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. RP BROWN, FH (reprint author), USAF,REG HOSP EGLIN,EGLIN AFB,FL 32542, USA. NR 20 TC 10 Z9 10 U1 0 U2 1 PU AMER ACAD PERIODONTOLOGY PI CHICAGO PA 737 NORTH MICHIGAN AVENUE, SUITE 800, CHICAGO, IL 60611-2690 SN 0022-3492 J9 J PERIODONTOL JI J. Periodont. PD AUG PY 1991 VL 62 IS 8 BP 524 EP 527 PG 4 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA GB221 UT WOS:A1991GB22100008 PM 1920020 ER PT J AU CAMPAGNI, WV MAJCHROWICZ, M AF CAMPAGNI, WV MAJCHROWICZ, M TI AN ACCELERATED TECHNIQUE FOR CASTING POST AND CORE RESTORATIONS SO JOURNAL OF PROSTHETIC DENTISTRY LA English DT Article AB An accelerated technique for casting a direct-pattern post and core restoration is presented. The entire clinical and laboratory procedure may be completed within 1 hour. The necessity for two appointments for completion of the restoration as well as the necessity of making two provisional restorations may be eliminated. C1 UNIV PITTSBURGH,SCH DENT,DEPT RESTORAT DENT,PITTSBURGH,PA 15261. USAF,ELMENDORF AFB,ANCHORAGE,AK. RP CAMPAGNI, WV (reprint author), UNIV PITTSBURGH,SCH DENT MED,3501 TERRACE ST,PITTSBURGH,PA 15261, USA. NR 3 TC 15 Z9 15 U1 0 U2 0 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0022-3913 J9 J PROSTHET DENT JI J. Prosthet. Dent. PD AUG PY 1991 VL 66 IS 2 BP 155 EP 156 DI 10.1016/S0022-3913(05)80040-X PG 2 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA FZ335 UT WOS:A1991FZ33500004 PM 1774672 ER PT J AU STCLAIR, SR RITCHEY, ML HANSBERRY, K HIXSON, CJ AF STCLAIR, SR RITCHEY, ML HANSBERRY, K HIXSON, CJ TI VIABILITY AND FUNCTIONAL-CHARACTERISTICS OF ENTEROCYSTOPLASTY AFTER LIGATION OF THE VASCULAR PEDICLE SO JOURNAL OF UROLOGY LA English DT Article; Proceedings Paper CT 1990 ANNUAL MEETING OF THE SECTION OF UROLOGY OF THE AMERICAN ACADEMY OF PEDIATRICS CY OCT 05-10, 1990 CL BOSTON, MA SP AMER ACAD PEDIAT, SECT UROL DE URINARY DIVERSION; LIGATION; BLOOD SUPPLY ID BLOOD-FLOW; SKIN FLAPS; DOPPLER; MANAGEMENT; INTESTINE AB A canine model was developed to evaluate the effect of ligation of the mesenteric blood supply of enterocystoplasty. In 5 dogs with an ileocystoplasty and 6 with a gastrocystoplasty the blood supply was interrupted 4 months postoperatively. Re-exploration 2 to 8 weeks later revealed sufficient collateral blood flow to maintain integrity of the bowel wall and none of the animals had urine leak or other signs of perforation. Two animals had a significant decrease in the size of the cystoplasty. Intraoperative measurements of bowel viability after pedicle ligation were not predictive of the outcome. The functional outcome after pedicle division seems to be variable and probably reflects how well the patch has been vascularized before interruption of the blood supply. The augmented bladder may remain viable if sufficient time has elapsed to allow revascularization of the intestinal segment before its mesenteric blood supply is divided. C1 WILFORD HALL USAF MED CTR,DEPT CLIN INVEST DIRECTORATE,LACKLAND AFB,TX 78236. WILFORD HALL USAF MED CTR,JOINT MIL MED COMMAND,DEPT UROL,LACKLAND AFB,TX 78236. NR 15 TC 2 Z9 2 U1 0 U2 0 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0022-5347 J9 J UROLOGY JI J. Urol. PD AUG PY 1991 VL 146 IS 2 BP 554 EP 557 PN 2 PG 4 WC Urology & Nephrology SC Urology & Nephrology GA FZ776 UT WOS:A1991FZ77600012 PM 1861299 ER PT J AU CHEU, HW MILLS, JL AF CHEU, HW MILLS, JL TI DIGITAL ARTERY EMBOLIZATION AS A RESULT OF FIBROMUSCULAR DYSPLASIA OF THE BRACHIAL-ARTERY SO JOURNAL OF VASCULAR SURGERY LA English DT Article ID HAND ISCHEMIA; DISEASE; HYPERPLASIA AB A 74-year-old woman was admitted to the hospital with sudden onset of a blue, painful right index finger, and the condition progressed to digital ulceration. The ulcer gradually healed over a period of 2 months. Peripheral pulses, Doppler-derived brachial and radial systolic pressures, and results of an echocardiogram were normal. Digital pulse volume recordings showed obstructive waveforms in all digits of the right hand. Arteriography showed a normal arch and normal innominate, subclavian, and axillary arteries. The midbrachial artery was markedly abnormal and had alternating areas of stenosis and aneurysm formation. Multiple occlusions involved the palmar arch and proper digital arteries. The abnormal brachial artery segment was excised and replaced with an autogenous reversed saphenous-vein conduit. Histologic examination confirmed the lesion to be medial fibromuscular dysplasia. Fibromuscular dysplasia that involves upper extremity arteries is extremely uncommon and rarely presents with digital artery embolization. This case emphasizes the importance of exclusion of proximal reconstructible arterial occlusive disease by means of complete arteriographic examination of patients who were admitted with unilateral finger or hand ischemia. C1 WILFORD HALL USAF MED CTR,VASC SURG SERV,SGHSG,LACKLAND AFB,TX 78236. OI Mills, Joseph/0000-0002-4955-4384 NR 20 TC 12 Z9 12 U1 0 U2 0 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0741-5214 J9 J VASC SURG JI J. Vasc. Surg. PD AUG PY 1991 VL 14 IS 2 BP 225 EP 228 PG 4 WC Surgery; Peripheral Vascular Disease SC Surgery; Cardiovascular System & Cardiology GA GA522 UT WOS:A1991GA52200016 PM 1861335 ER PT J AU MILLS, JL AF MILLS, JL TI POSTOPERATIVE SURVEILLANCE AND CHARACTERISTICS OF FAILING INFRAINGUINAL GRAFTS - REPLY SO JOURNAL OF VASCULAR SURGERY LA English DT Letter ID BYPASS RP MILLS, JL (reprint author), USAF,870TH CONTINGENCY HOSP,NEW YORK,NY 09198, USA. OI Mills, Joseph/0000-0002-4955-4384 NR 3 TC 0 Z9 0 U1 0 U2 0 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0741-5214 J9 J VASC SURG JI J. Vasc. Surg. PD AUG PY 1991 VL 14 IS 2 BP 242 EP 242 PG 1 WC Surgery; Peripheral Vascular Disease SC Surgery; Cardiovascular System & Cardiology GA GA522 UT WOS:A1991GA52200020 ER PT J AU SMITH, RH AF SMITH, RH TI THE AIR-FORCE NURSE INTERN PROGRAM SO MILITARY MEDICINE LA English DT Article AB The Air Force Nurse Intern Program is a 5-month-long introduction to Air Force nursing for BSN-prepared graduate nurses. The program is designed to facilitate the transition from civilian nursing student to practicing Air Force Nurse Corps Officer. After attending Military Indoctrination for Medical Service Officers, newly commissioned nurses attend the program at one of 10 Air Force medical centers before going to their permanent duty stations. Preceptors guide and instruct the interns at each of four clinical rotation sites. The author, a former nurse intern, describes some of the many opportunities available to nurse interns. RP SMITH, RH (reprint author), WILFORD HALL USAF MED CTR,DEPT CRIT CARE,LACKLAND AFB,TX 78236, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ASSN MILITARY SURG US PI BETHESDA PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 SN 0026-4075 J9 MIL MED JI Milit. Med. PD AUG PY 1991 VL 156 IS 8 BP 417 EP 419 PG 3 WC Medicine, General & Internal SC General & Internal Medicine GA GB576 UT WOS:A1991GB57600017 PM 1956534 ER PT J AU BOYD, RS DEMAIO, J AF BOYD, RS DEMAIO, J TI USE OF CHLAMYDIAZYME ON URINE SEDIMENT FOR DIAGNOSIS OF CHLAMYDIA-TRACHOMATIS GENITAL INFECTIONS SO MILITARY MEDICINE LA English DT Article AB The enzyme-linked immunosorbent assay testing of urine sediment in males has been FDA approved for the detection of Chlamydia trachomatis. We compared urine sediment testing to urethral or cervical swabs in 47 men and 219 women using a simpler technique than that recommended by the manufacturer. Sensitivity and specificity values of 88% and 97% for men and 29% and 98% for women, respectively, were found. Urine sediment testing is inadequate in women. However, urine sediment testing in men using our modified technique offers a rapid, accurate, and non-invasive approach which can effectively replace the use of urethral swabs throughout the military. RP BOYD, RS (reprint author), USAF,OFF MED SUPPORT,BROOKS AFB,TX 78235, USA. NR 0 TC 4 Z9 4 U1 0 U2 0 PU ASSN MILITARY SURG US PI BETHESDA PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 SN 0026-4075 J9 MIL MED JI Milit. Med. PD AUG PY 1991 VL 156 IS 8 BP 420 EP 421 PG 2 WC Medicine, General & Internal SC General & Internal Medicine GA GB576 UT WOS:A1991GB57600018 PM 1956535 ER PT J AU WHITNEY, EJ ASHCOM, TL HANTMAN, RK HEIRONIMUS, J AF WHITNEY, EJ ASHCOM, TL HANTMAN, RK HEIRONIMUS, J TI REVERSIBILITY OF FIXED ATHEROSCLEROTIC LESIONS WITH AGGRESSIVE RISK FACTOR MODIFICATION SO MILITARY MEDICINE LA English DT Article AB Seven patients with atherosclerotic coronary artery disease documented by coronary angiography and exercise stress testing were treated with the American Heart Association Step II Diet, a walking program, and combination drug therapy with niacin, cholestyramine, gemfibrozil, and/or lovastatin. As a result of this intervention, there was a mean weight loss of 24.7 pounds, a mean reduction in cholesterol from 297 mg% to 167 mg%, a mean increase in high density lipoprotein cholesterol from 33 mg% to 55 mg%, and a mean reduction in triglyceride levels from 248 mg% to 58mg%. Repeat exercise stress testing and coronary angiography were performed 2 years after the initial catheterization. Photographs of end-diastolic frames were compared utilizing the same views with the same magnification. In six of the seven patients, there was a mean increase in luminal area at the greatest stenosis of 1.3 mm2 in eight lesions present at initial catheterization. In four of these six patients, there was evidence for improvement in coronary blood flow manifested by improvement in electrocardiogram (ECG) exercise stress testing and/or exercise thallium stress testing. In one patient, there was a mean decrease in luminal area at greatest stenosis of 1.35 mm2 in two lesions and the development of an additional plaque in an area which was previously normal. In addition, this patient had evidence for progression by ECG exercise stress testing. Aggressive risk factor modification can reverse what were previously considered "fixed" atherosclerotic lesions in selected patients. RP WHITNEY, EJ (reprint author), WILFORD HALL USAF MED CTR,CARDIOL SERV,LACKLAND AFB,TX 78236, USA. NR 0 TC 3 Z9 3 U1 0 U2 0 PU ASSN MILITARY SURG US PI BETHESDA PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 SN 0026-4075 J9 MIL MED JI Milit. Med. PD AUG PY 1991 VL 156 IS 8 BP 422 EP 429 PG 8 WC Medicine, General & Internal SC General & Internal Medicine GA GB576 UT WOS:A1991GB57600019 PM 1956536 ER PT J AU RONE, JK BRIETZKE, SA AF RONE, JK BRIETZKE, SA TI EUTHYROID THYROTOXIC PERIODIC PARALYSIS SO MILITARY MEDICINE LA English DT Article AB Thyrotoxic periodic paralysis (TPP) is a dramatic complication of thyrotoxicosis usually seen in young men with untreated Graves' disease. We report the case of a 29-year-old active duty man with TPP attacks atypical in that they occurred during and after resolution of the hyperthyroidism. Our literature review revealed only two previously reported cases of TPP concurrent with euthyroidism. Risk factors for TPP include the postprandial state after carbohydrate-rich meals and the post-exertional state. At least a 2-week "window of vulnerability" for TPP appears to exist after initiation of antithyroid therapy. Hyperthyroid active duty males are especially at risk of TPP, and require physical profiling at the time of diagnosis and for a limited period after they become euthyroid, to minimize the occurrence of this complication. RP RONE, JK (reprint author), WILFORD HALL USAF MED CTR,DEPT ENDOCRINOL & METAB,SGHMME,LACKLAND AFB,TX 78236, USA. NR 0 TC 10 Z9 12 U1 0 U2 0 PU ASSN MILITARY SURG US PI BETHESDA PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 SN 0026-4075 J9 MIL MED JI Milit. Med. PD AUG PY 1991 VL 156 IS 8 BP 434 EP 436 PG 3 WC Medicine, General & Internal SC General & Internal Medicine GA GB576 UT WOS:A1991GB57600021 PM 1956538 ER PT J AU SORKIN, RD MABRY, TR WELDON, MS ELVERS, G AF SORKIN, RD MABRY, TR WELDON, MS ELVERS, G TI INTEGRATION OF INFORMATION FROM MULTIPLE ELEMENT DISPLAYS SO ORGANIZATIONAL BEHAVIOR AND HUMAN DECISION PROCESSES LA English DT Article ID INTUITIVE NUMERICAL PREDICTION; COMPLEX SOUND; IDENTIFICATION; PERFORMANCE; SIGNAL; TASKS C1 USAF ACAD,COLORADO SPRINGS,CO 80840. UNIV CALIF SANTA CRUZ,SANTA CRUZ,CA 95064. UNIV DAYTON,DAYTON,OH 45469. RP SORKIN, RD (reprint author), UNIV FLORIDA,DEPT PSYCHOL,GAINESVILLE,FL 32611, USA. NR 28 TC 10 Z9 10 U1 0 U2 0 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 SN 0749-5978 J9 ORGAN BEHAV HUM DEC JI Organ. Behav. Hum. Decis. Process. PD AUG PY 1991 VL 49 IS 2 BP 167 EP 187 DI 10.1016/0749-5978(91)90047-W PG 21 WC Psychology, Applied; Management; Psychology, Social SC Psychology; Business & Economics GA GB113 UT WOS:A1991GB11300001 ER PT J AU GORDON, MS CARROLL, MT JENSEN, JH DAVIS, LP BURGGRAF, LW GUIDRY, RM AF GORDON, MS CARROLL, MT JENSEN, JH DAVIS, LP BURGGRAF, LW GUIDRY, RM TI NATURE OF THE SI-N BOND IN SILATRANES SO ORGANOMETALLICS LA English DT Article ID MOLECULAR-ORBITAL APPROACH; ION-CYCLOTRON RESONANCE; NUCLEOPHILIC-SUBSTITUTION; GAS-PHASE; SILICON-COMPOUNDS; ABINITIO; PENTACOORDINATE; SIF4.NH3; ATOM AB Both ab initio and semiempirical calculations are used to investigate the structure and bonding in substituted silatranes. In agreement with gas-phase experiments, which find Si-N distances that are 0.25-0.35 angstrom longer than those in the crystal phase, the Si-N distance (for example, in methylsilatrane) is predicted to be much larger than that observed in the crystal. Nonetheless, a bond critical point is found between Si and N, suggesting the existence of an Si-N bond in these compounds. It is found that the energy cost for constraining the Si-N distance in hydroxysilatrane to a value similar to that observed in the crystal is less than 6 kcal/mol. This suggests that crystal forces may be responsible for the much shorter Si-N distance in the solid. C1 USAF,OFF SCI RES,DIRECTORATE CHEM & ATMOSPHER SCI,WASHINGTON,DC 20332. RP GORDON, MS (reprint author), N DAKOTA STATE UNIV,DEPT CHEM,FARGO,ND 58105, USA. RI Jensen, Jan/G-4338-2010 OI Jensen, Jan/0000-0002-1465-1010 NR 37 TC 62 Z9 62 U1 1 U2 5 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0276-7333 J9 ORGANOMETALLICS JI Organometallics PD AUG PY 1991 VL 10 IS 8 BP 2657 EP 2660 DI 10.1021/om00054a028 PG 4 WC Chemistry, Inorganic & Nuclear; Chemistry, Organic SC Chemistry GA GA275 UT WOS:A1991GA27500028 ER PT J AU CHIN, LP LAROSE, PG TANKIN, RS SWITZER, G AF CHIN, LP LAROSE, PG TANKIN, RS SWITZER, G TI DROPLET DISTRIBUTIONS FROM THE BREAKUP OF A CYLINDRICAL LIQUID JET SO PHYSICS OF FLUIDS A-FLUID DYNAMICS LA English DT Article ID SPRAY AB A phase/Doppler particle analyzer is used to measure the size and velocity distributions of the droplets generated by the disintegration of a cylindrical liquid jet. This type of liquid jet breakup is commonly called Rayleigh breakup. Metered liquid flow rates agree with the rates computed from the droplet measurements made with the phase/Doppler particle analyzer. The maximum entropy principle is used to predict the droplet size and velocity distributions. The constraints imposed in this model involve conservation of mass, momentum, surface energy, and kinetic energy. Agreement between measurements and predictions is very good. C1 USAF,WRIGHT PATTERSON AFB,OH 45433. SYST RES LABS INC,DAYTON,OH 45440. RP CHIN, LP (reprint author), NORTHWESTERN UNIV,EVANSTON,IL 60208, USA. NR 21 TC 13 Z9 15 U1 1 U2 2 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0899-8213 J9 PHYS FLUIDS A-FLUID PD AUG PY 1991 VL 3 IS 8 BP 1897 EP 1906 DI 10.1063/1.857919 PG 10 WC Mechanics; Physics, Fluids & Plasmas SC Mechanics; Physics GA FY795 UT WOS:A1991FY79500008 ER PT J AU LAIR, AV AF LAIR, AV TI THE RATE OF SPATIAL DECAY OF NONNEGATIVE SOLUTIONS OF NONLINEAR PARABOLIC EQUATIONS AND INEQUALITIES SO PROCEEDINGS OF THE AMERICAN MATHEMATICAL SOCIETY LA English DT Article AB Let L be a uniformly parabolic linear partial differential operator. We show that nonnegative solutions of the differential inequality Lu less-than-or-equal-to c(u + \NABLA u\) on R(n) x (O, T) for which u(x, T) = 0(exp(-delta\x\2)) must be identically zero if the constant delta is sufficiently large. An analogous result is given for nonlinear systems. RP LAIR, AV (reprint author), USAF,INST TECHNOL,DEPT MATH & COMP SCI,WRIGHT PATTERSON AFB,OH 45433, USA. NR 8 TC 0 Z9 0 U1 0 U2 1 PU AMER MATHEMATICAL SOC PI PROVIDENCE PA 201 CHARLES ST, PROVIDENCE, RI 02940-2213 SN 0002-9939 J9 P AM MATH SOC JI Proc. Amer. Math. Soc. PD AUG PY 1991 VL 112 IS 4 BP 1077 EP 1081 DI 10.2307/2048656 PG 5 WC Mathematics, Applied; Mathematics SC Mathematics GA GB509 UT WOS:A1991GB50900023 ER PT J AU SEMIATIN, SL OHLS, M KERR, WR AF SEMIATIN, SL OHLS, M KERR, WR TI TEMPERATURE TRANSIENTS DURING HOT PACK ROLLING OF HIGH-TEMPERATURE ALLOYS SO SCRIPTA METALLURGICA ET MATERIALIA LA English DT Article C1 NUCL MET INC,CONCORD,MA 01742. WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433. RP SEMIATIN, SL (reprint author), BATTELLE MEM INST,COLUMBUS,OH 43201, USA. RI SEMIATIN, SHELDON/E-7264-2017 NR 7 TC 26 Z9 29 U1 1 U2 7 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0956-716X J9 SCRIPTA METALL MATER JI Scr. Metall. Materialia PD AUG PY 1991 VL 25 IS 8 BP 1851 EP 1856 DI 10.1016/0956-716X(91)90316-S PG 6 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA FZ561 UT WOS:A1991FZ56100017 ER PT J AU NICHOLLS, DJ AF NICHOLLS, DJ TI THE INFLUENCE OF CRACK BLUNTING ON THE THERMODYNAMICS OF FATIGUE CRACK-GROWTH SO SCRIPTA METALLURGICA ET MATERIALIA LA English DT Article RP NICHOLLS, DJ (reprint author), USAF ACAD,COLORADO SPRINGS,CO 80840, USA. NR 10 TC 2 Z9 2 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0956-716X J9 SCRIPTA METALL MATER JI Scr. Metall. Materialia PD AUG PY 1991 VL 25 IS 8 BP 1975 EP 1979 DI 10.1016/0956-716X(91)90338-2 PG 5 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA FZ561 UT WOS:A1991FZ56100039 ER PT J AU KOLESAR, ES WISEMAN, JM AF KOLESAR, ES WISEMAN, JM TI SELECTIVE DETECTION OF NITROGEN-DIOXIDE AND DIISOPROPYL METHYLPHOSPHONATE WITH AN INTERDIGITATED GATE ELECTRODE FIELD-EFFECT TRANSISTOR (IGEFET) SO SENSORS AND ACTUATORS B-CHEMICAL LA English DT Article ID ELECTRICAL-CONDUCTIVITY CHANGES; PHOSPHORUS COMPOUND DETECTION; COATED PIEZOELECTRIC CRYSTAL; SUPPORTED COPPER; SAW-CHEMOSENSOR; GAS SENSORS; PHTHALOCYANINE; PESTICIDES; FILM AB A microelectronic integrated circuit, referred to as the interdigitated gate electrode field-effect transistor (IGEFET), has been coupled with a chemically active electron-beam evaporated copper phthalocyanine (CuPc) thin film to realize a novel gas-sensitive microsensor. The sensor has been utilized to selectively detect parts-per-billion concentration levels of nitrogen dioxide (NO2) and diisopropyl methylphosphonate (DIMP). The sensor is excited with a voltage pulse, and the time- and frequency-domain responses are measured. The envelopes associated with the normalized difference Fourier transform magnitude frequency spectra reveal features which unambiguously distinguish the NO2 and DIMP challenge gas responses. The area beneath each response envelope can correspondingly be interpreted as the sensor's sensitivity for a specific challenge gas concentration. RP KOLESAR, ES (reprint author), USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,WRIGHT PATTERSON AFB,OH 45433, USA. NR 47 TC 2 Z9 2 U1 1 U2 3 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0925-4005 J9 SENSOR ACTUAT B-CHEM JI Sens. Actuator B-Chem. PD AUG-DEC PY 1991 VL 5 IS 1-4 BP 37 EP 46 DI 10.1016/0925-4005(91)80217-8 PG 10 WC Chemistry, Analytical; Electrochemistry; Instruments & Instrumentation SC Chemistry; Electrochemistry; Instruments & Instrumentation GA HH774 UT WOS:A1991HH77400006 ER PT J AU MILLS, JL BECKETT, WC TAYLOR, SM AF MILLS, JL BECKETT, WC TAYLOR, SM TI THE DIABETIC FOOT - CONSEQUENCES OF DELAYED TREATMENT AND REFERRAL SO SOUTHERN MEDICAL JOURNAL LA English DT Article ID MICROVASCULAR DISEASE; BLOOD-FLOW; AMPUTATIONS; INFECTION; ISCHEMIA; CARE AB The pathophysiology of foot problems in diabetic patients is poorly understood by many physicians. Two major factors that frequently lead to a delay in appropriate treatment with subsequent limb loss are failure to appreciate the presence and severity of underlying infection and attribution of gangrene of the toe and forefoot to microvascular disease. To evaluate the consequences of delayed recognition and treatment, we reviewed the records of 55 diabetic patients with localized gangrene or infection of the forefoot in 62 limbs, treated consecutively on a single vascular surgical service over a 2-year period using a standard protocol. All appropriately treated neuropathic ulcers and forefoot infections healed in patients with palpable pedal pulses. If foot pulses were absent and arteriography confirmed large-vessel occlusive disease, foot lesions and infections likewise healed if concomitant revascularization was done. In our series, 33 bypasses were required because of severe atherosclerotic occlusive disease. Only one patient had "unreconstructable" arterial disease. Limb salvage was 86% at a mean follow-up of 12.4 months. In 16 of the patients (29%), there was a prolonged delay between initial treatment and referral for definitive care. The specific causes of delay were underestimation of the severity of foot infection in 10 patients, and lack of recognition of ischemia due to large-vessel occlusive disease in six. These delays led to more proximal levels of amputation in six patients, including three below-knee amputations in patients with limbs that were initially salvageable. RP MILLS, JL (reprint author), WILFORD HALL USAF MED CTR,DEPT GEN SURG,VASC SURG SERV,SGHSG,LACKLAND AFB,TX 78236, USA. OI Mills, Joseph/0000-0002-4955-4384 NR 21 TC 41 Z9 41 U1 1 U2 1 PU SOUTHERN MEDICAL ASSN PI BIRMINGHAM PA 35 LAKESHORE DR PO BOX 190088, BIRMINGHAM, AL 35219 SN 0038-4348 J9 SOUTHERN MED J JI South.Med.J. PD AUG PY 1991 VL 84 IS 8 BP 970 EP 974 PG 5 WC Medicine, General & Internal SC General & Internal Medicine GA GC433 UT WOS:A1991GC43300009 PM 1882274 ER PT J AU ROYSTER, RM KUJAWA, P DRYER, RF AF ROYSTER, RM KUJAWA, P DRYER, RF TI MULTILEVEL OSTEOCHONDROMA OF THE LUMBAR SPINE PRESENTING AS SPINAL STENOSIS SO SPINE LA English DT Note C1 USAF,DEPT ORTHOPED,LACKLAND AFB,TX 78236. NR 0 TC 6 Z9 6 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 0362-2436 J9 SPINE JI SPINE PD AUG PY 1991 VL 16 IS 8 BP 992 EP 993 DI 10.1097/00007632-199108000-00025 PG 2 WC Clinical Neurology; Orthopedics SC Neurosciences & Neurology; Orthopedics GA GB232 UT WOS:A1991GB23200025 PM 1948388 ER PT J AU GLAZNER, AF FARMER, GL HUGHES, WT WOODEN, JL PICKTHORN, W AF GLAZNER, AF FARMER, GL HUGHES, WT WOODEN, JL PICKTHORN, W TI CONTAMINATION OF BASALTIC MAGMA BY MAFIC CRUST AT AMBOY AND PISGAH CRATERS, MOJAVE DESERT, CALIFORNIA SO JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH AND PLANETS LA English DT Article ID WESTERN UNITED-STATES; SOUTHERN CALIFORNIA; ISOTOPIC VARIATIONS; VOLCANIC-ROCKS; RANGE PROVINCE; MANTLE; ARIZONA; BASIN; EVOLUTION; EXTENSION AB Quaternary alkali basalts from Pisgah Crater and Amboy Crater in southern California exhibit unusual chemical and isotopic variations which probably result from assimilation of mafic crust. Although lavas from both volcanoes are alkali basalts and hawaiites with isotopic and chemical characteristics that are similar to ocean island basalts (OIB) (e.g., epsilon-Nd = 2.6 - 5.9, Sr-87/Sr-86 = 0.7038 - 0.7049, Hf/Ba = 0.014 - 0.017), they display highly correlated and unusual variations in their chemical and isotopic compositions. At each volcano, MgO decreased during the eruptive sequence from almost-equal-to 8.5 wt % to almost-equal-to 4.5 wt %. Incompatible elements are positively correlated with MgO and therefore also decreased during the eruptive sequence. Nd, Sr, and Pb isotope ratios correlate strongly with MgO. Compositional and isotopic data cannot be explained by any combination of closed-system fractionation, partial melting of the mantle, or silicic contamination. These data indicate that the basalts represent mixing between a high-MgO, high-epsilon-Nd component, common to both Pisgah and Amboy craters, with lower-MgO and -epsilon-Nd components that are unique to each center. The high-MgO component most likely is a primitive mantle-derived magma, based in part on its similarity to nearby xenolith-bearing Quaternary basalts. The low-MgO components are interpreted to be partial melts of mafic crust. If our model is correct, then both volcanoes evolved from eruption of nearly pure mantle melts early in their history to eruption of nearly pure remelted mafic crust late in their history. The crustal source could not have been underplated Mesozoic or younger oceanic crust, but its age is otherwise unconstrained; nearby Mesozoic gabbros and Proterozoic diabases have appropriate isotopic compositions. The basalt data provide no evidence that ancient enriched lithospheric mantle currently underlies the Mojave Desert. If such mantle was present at any time beneath this region, it must have been removed during one or more of the many tectonic events that affected the Mojave Desert during the Phanerozoic. Regional variability of isotope ratios in basalts is commonly interpreted to reflect variability of the underlying mantle. Data from this study raise the possibility that some of this variability may result from cryptic contamination of OIB-like basalts by mafic crust. C1 UNIV COLORADO,DEPT GEOL SCI,BOULDER,CO 80309. UNIV COLORADO,NOAA,COOPERAT INST RES ENVIRONM SCI,BOULDER,CO 80309. OPERAT TECHNOL CORP,MATHER AFB,CA 95655. US GEOL SURVEY,MENLO PK,CA 94025. RP GLAZNER, AF (reprint author), UNIV N CAROLINA,DEPT GEOL,CB 3315,CHAPEL HILL,NC 27599, USA. NR 74 TC 50 Z9 52 U1 0 U2 7 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES-SOLID PD JUL 30 PY 1991 VL 96 IS B8 BP 13673 EP 13691 DI 10.1029/91JB00175 PG 19 WC Geosciences, Multidisciplinary SC Geology GA FY298 UT WOS:A1991FY29800026 ER PT J AU HALL, LA ANDERSON, GP AF HALL, LA ANDERSON, GP TI HIGH-RESOLUTION SOLAR SPECTRUM BETWEEN 2000 AND 3100-A SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES LA English DT Article ID ULTRAVIOLET IRRADIANCE; NM AB Solar spectra in the wavelength range 200-3100 angstrom, measured near 40 km in the stratosphere in 1978 and 1983, have been combined and extrapolated to zero optical depth to provide a reference spectrum in 0.1-angstrom resolution. The wavelength scale has been carefully compared with wavelength standards, and a cyclic instrumental effect has been removed, resulting in a wavelength accuracy to within 0.04 angstrom. The absolute intensities have been normalized to the previously reported 1983 spectrum in 1.0-angstrom resolution. RP HALL, LA (reprint author), USAF, GEOPHYS LAB, MAIL CODE LIM, BEDFORD, MA 01731 USA. NR 14 TC 21 Z9 21 U1 0 U2 0 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 2169-897X J9 J GEOPHYS RES-ATMOS JI J. Geophys. Res.-Atmos. PD JUL 20 PY 1991 VL 96 IS D7 BP 12927 EP 12931 DI 10.1029/91JD01111 PG 5 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA FY191 UT WOS:A1991FY19100007 ER PT J AU GANGULY, BN GARSCADDEN, A AF GANGULY, BN GARSCADDEN, A TI ELECTRIC-FIELD AND DOPPLER EMISSION PROFILE MEASUREMENTS IN AN OBSTRUCTED HYDROGEN DISCHARGE SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID CROSS-SECTIONS; LOW-PRESSURE; GAS-DENSITY; BREAKDOWN; N-2; EXCITATION; RATIOS; H-2 AB Spatially resolved electric field, emission intensity, and l linewidth profiles have been measured in a dc low current, low pressure obstructed hydrogen discharge with a planar electrode configuration. The polarization-dependent Stark splitting of the H-beta line has been used to measure the electric field. The axial electric field was high over the entire interelectrode space. The radial variations of electric field and emission intensity show that the discharge is almost annular. The H-alpha spectra indicate that, except in a plasma region at an edge of the anode, heavy-particle excitations exceed electron-impact excitation and that the kinetic energy of much of the excited atomic hydrogen was as high as 450 eV. This dc discharge exhibits current-voltage oscillations which appear to be caused by the periodic collapse of the wall sheath. For these discharge conditions, the H-beta Stark spectrum yields electric field measurements with an accuracy of better than 5%. RP GANGULY, BN (reprint author), WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433, USA. NR 27 TC 23 Z9 24 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD JUL 15 PY 1991 VL 70 IS 2 BP 621 EP 627 DI 10.1063/1.349663 PG 7 WC Physics, Applied SC Physics GA FY341 UT WOS:A1991FY34100014 ER PT J AU MENAPACE, JA MARLIN, JE BRUSS, DR DASCHER, RV AF MENAPACE, JA MARLIN, JE BRUSS, DR DASCHER, RV TI PHOTOCHEMICAL AND THERMOCHEMICAL DECOMPOSITION OF 3-NITRO-1,2,4-TRIAZOL-5-ONE AND PERDEUTERIO-3-NITRO-1,2,4-TRIAZOL-5-ONE IN NEAT AND MIXED SYSTEMS SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article ID ELECTRON-PARAMAGNETIC-RES; THERMAL-DECOMPOSITION; SCANNING CALORIMETRY; FREE-RADICALS; 2,4,6-TRINITROTOLUENE; EXPLOSIVES; NITROXIDE; ANALOGS AB Electron paramagnetic resonance spectroscopy (EPR) and high performance liquid chromatography (HPLC) are used to examine the decomposition of 3-nitro-1,2,4-triazol-5-one (NTO), NTO-d2, NTO (NTO-d2) in acetone (acetone-d6), and NTO (NTO-d2) in 2,4,6-trinitrotoluene (TNT) (TNT-d5) under photochemical and thermochemical decomposition conditions. Room-temperature photochemical decomposition of NTO (NTO-d2)/acetone (acetone-d6) solutions monitored by EPR shows that the NTO nitro group abstracts hydrogen atoms from other NTO species and/or acetone as evidenced by the observation of EPR spectra associated with NTO hydroxy nitroxide radicals. The aryl hydroxy nitroxide and aryl benzyl nitroxide radical spectra observed in the NTO (NTO-d2)/TNT (TNT-d5) thermochemical decompositions at 370 K also show that nitro group/hydrogen abstraction reactions are operative in these systems. The hydrogen abstraction reactivity order present in these systems is found to be NO2,TNT/H(NTO) > NO2,NTO/CH3,TNT > NO2,NTO/NH(NTO), NO2,TNT/CH3,TNT almost-equal-to 0. These experiments also indicate that the mixtures undergo accelerated decomposition relative to the neat materials due to contributions from cross reactions occurring between NTO and TNT. The HPLC global kinetics studies conducted between 498 and 518 K show that the loss of NTO (NTO-d2) proceeds by a solid-state global autocatalytic reaction scheme for which initiation and propagation reactions contribute to the observed kinetic behavior. The decompositions are found to possess an average global activation energy of 88.0 kcal/mol. A primary kinetic deuterium isotope effect of 1.67 (2.44 at 298 K) is also observed which indicates that nitrogen-hydrogen bond cleavage plays a significant role in the loss of NTO (NTO-d2). C1 ALBANY COLL PHARM,ALBANY,NY 12208. RP MENAPACE, JA (reprint author), USAF ACAD,FRANK J SEILER RES LAB,AFSC,COLORADO SPRINGS,CO 80840, USA. NR 38 TC 43 Z9 43 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0022-3654 J9 J PHYS CHEM-US JI J. Phys. Chem. PD JUL 11 PY 1991 VL 95 IS 14 BP 5509 EP 5517 DI 10.1021/j100167a028 PG 9 WC Chemistry, Physical SC Chemistry GA FW477 UT WOS:A1991FW47700028 ER PT J AU KIZIAH, RR LOWELL, JR AF KIZIAH, RR LOWELL, JR TI EXPERIMENTAL RESPONSE FUNCTIONS SPANNING THE GAMMA-RAY ENERGY-RANGE OF 123.6 KEV TO 11.67 MEV AND RESPONSE MATRIX GENERATION FOR BISMUTH-GERMANATE SCINTILLATION DETECTORS SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article ID THICK TARGETS; NEUTRONS; DISTRIBUTIONS; SPECTROMETER; EFFICIENCY; PHOTONS; PROTONS; SPECTRA; 30-MEV AB We report experimental response functions at 12 gamma-ray energies over the range of 123.6 keV to 11.67 MeV for a 2.54 cm diameter x 2.54 cm long and a 7.62 cm diameter x 7.62 cm long bismuth germanate scintillation detector. The measurements were made at, or corrected to correspond to, source-to-detector distances of 100 cm. The resolutions of the detectors at a gamma-ray energy of 661.6 keV are 11.6% for the small detector and 13.0% for the large detector. We also present an interpolation method for generating a response function at any gamma-ray energy in the range of 123.6 keV to 11.67 MeV for either scintillator using the experimental response functions. Additionally, this method is used in constructing response matrices for unfolding gamma-ray pulse-height distributions acquired with the detectors. A computer code written in FORTRAN-77 generates the response matrices. RP KIZIAH, RR (reprint author), USAF ACAD,INST PHYS,COLORADO SPRINGS,CO 80840, USA. NR 21 TC 5 Z9 5 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD JUL 10 PY 1991 VL 305 IS 1 BP 129 EP 142 DI 10.1016/0168-9002(91)90526-V PG 14 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA FX225 UT WOS:A1991FX22500016 ER PT J AU GRANDHI, RV HAQ, I AF GRANDHI, RV HAQ, I TI ENHANCED ROBUSTNESS IN INTEGRATED STRUCTURAL CONTROL-SYSTEMS DESIGN SO AIAA JOURNAL LA English DT Article ID STABILITY ROBUSTNESS; OPTIMIZATION AB This paper addresses maximizing the robustness of an integrated structural/control system for increasing the stability margin under parametric uncertainties. The robustness limit is defined for a linear time-invariant system consisting of structured perturbations. The optimization problem has considered the closed-loop eigenvalues, damping parameter, and robustness as design constraints. Effects of increasing the stability robustness of a closed-loop system are demonstrated on two structural optimization examples. C1 USAF,WRIGHT AERONAUT LABS,WRIGHT PATTERSON AFB,OH 45433. RP GRANDHI, RV (reprint author), WRIGHT STATE UNIV,DEPT MECH & MAT ENGN,DAYTON,OH 45435, USA. NR 17 TC 11 Z9 11 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0001-1452 J9 AIAA J JI AIAA J. PD JUL PY 1991 VL 29 IS 7 BP 1168 EP 1173 DI 10.2514/3.10719 PG 6 WC Engineering, Aerospace SC Engineering GA FZ702 UT WOS:A1991FZ70200019 ER PT J AU FRITZ, MA HOLMES, RT KEENAN, EJ AF FRITZ, MA HOLMES, RT KEENAN, EJ TI EFFECT OF CLOMIPHENE CITRATE TREATMENT ON ENDOMETRIAL ESTROGEN AND PROGESTERONE-RECEPTOR INDUCTION IN WOMEN SO AMERICAN JOURNAL OF OBSTETRICS AND GYNECOLOGY LA English DT Article DE CLOMIPHENE CITRATE; ESTROGEN RECEPTORS; PROGESTERONE RECEPTORS; ENDOMETRIUM ID LUTEAL PHASE DEFICIENCY; QUANTITY AB A direct adverse effect of clomiphene citrate on the endometrium has been presumed, and interference with estrogen receptor-mediated endometrial estrogen receptor and progesterone receptor induction has been implicated as the mechanism responsible for an increased incidence of luteal phase deficiency in association with clomiphene citrate treatment. To clarify the net influence of clomiphene administration on endometrial steroid receptor induction, we studied five normal ovulatory women, in both a spontaneous and clomiphene-induced (150 mg/day, cycle days 5 to 9) ovulatory cycle. From cycle day 11 blood samples were obtained daily and urinary luteinizing hormone determinations were performed twice daily. Endometrial biopsy was performed on the day of the urinary luteinizing hormone surge and again 13 days after the surge. Serum levels of follicle-stimulating hormone and luteinizing hormone were determined by immunoradiometric assay, estradiol and progesterone by radioimmunoassay, and clomiphene citrate isomer concentrations in treatment cycles by reversed-phase high-performance liquid chromatography and fluorescence detection. Total, cytosolic, and salt-extracted nuclear endometrial estrogen receptor and progesterone receptor concentrations were determined by enzyme-linked immunoassay. Serum estradiol was threefold to fivefold higher (p < 0.05) in clomiphene-induced than in spontaneous cycles 8 and 10 days before the luteinizing hormone surge, and progesterone was increased (p < 0.05) from the day of the surge to end of the cycle. Serum enclomiphene rose to plateau between 12 and 6 days before the luteinizing hormone surge (4.1 +/- 0.8 ng/ml, mean +/- SE, n = 19) and fell thereafter to < 1.0 ng/ml. Zuclomiphene levels increased rapidly between 14 and 8 days before the surge (53.9 +/- 2.8 ng/ml, mean +/- SE, n = 5) and then decreased gradually but remained elevated throughout the luteal phase (29.0 +/- 1.2 ng/ml, mean +/- SE, n = 33). Late luteal endometrial histology was abnormal in one of four available treatment cycle specimens, but the endocrine characteristics and number and subcellular distribution of estrogen receptor and progesterone receptor in the abnormal cycle were not different from those of normal, in-phase cycles. Total estrogen receptor and progesterone receptor at midcycle were three to four times higher (p < 0.01) than in the late luteal phase in both spontaneous cycles (7.2 +/- 2.3 vs 1.9 +/- 0.4 pmol/mg deoxyribonucleic acid estrogen receptor and 41.3 +/- 13.9 vs 13.4 +/- 3.9 pmol/mg deoxyribonucleic acid progesterone receptor) and clomiphene-induced cycles (8.2 +/- 2.3 vs 1.8 +/- 0.8 pmol/mg deoxyribonucleic acid estrogen receptor and 40.4 +/- 9.9 vs 10.1 +/- 4.1 pmol/mg deoxyribonucleic acid progesterone receptor), but neither midcycle nor late luteal estrogen receptor or progesterone receptor in any category (total, cytosolic, or salt-extracted nuclear) differed from spontaneous cycle values. These data strongly suggest that clomiphene citrate treatment does not adversely affect endometrial estrogen receptor and progesterone receptor induction. C1 USAF,DEPT OBSTET & GYNECOL,WRIGHT PATTERSON AFB,OH 45433. OREGON HLTH SCI UNIV,HORMONE RECEPTOR LAB,PORTLAND,OR 97201. OREGON HLTH SCI UNIV,DEPT OBSTET & GYNECOL,PORTLAND,OR 97201. NR 19 TC 28 Z9 30 U1 0 U2 1 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0002-9378 J9 AM J OBSTET GYNECOL JI Am. J. Obstet. Gynecol. PD JUL PY 1991 VL 165 IS 1 BP 177 EP 185 PG 9 WC Obstetrics & Gynecology SC Obstetrics & Gynecology GA FY358 UT WOS:A1991FY35800037 PM 1906682 ER PT J AU LONG, JR MAYFIELD, HT HENLEY, MV KROMANN, PR AF LONG, JR MAYFIELD, HT HENLEY, MV KROMANN, PR TI PATTERN-RECOGNITION OF JET FUEL CHROMATOGRAPHIC DATA BY ARTIFICIAL NEURAL NETWORKS WITH BACK-PROPAGATION OF ERROR SO ANALYTICAL CHEMISTRY LA English DT Article AB The purpose of this article is to demonstrate the application of artificial neural networks as a pattern recognition tool for chromatographic data. Multilayer feedforward networks using back-propagation and the generalized delta rule were simulated on a microcomputer. Network parameters and architectures were optimized to give maximum network classification performance. The chromatographic data for seven different classes of jet fuels were collected by GC and GC/MS. Binary patterns were used to represent various classes. The technique was tested and compared to K nearest neighbor, KNN, and soft independent modeling of class analogy, SIMCA. C1 FT VALLEY STATE UNIV,DEPT CHEM,FT VALLEY,GA 31030. RP LONG, JR (reprint author), AIR FORCE & ENGN SERV CTR,TYNDALL AFB,FL 32403, USA. NR 12 TC 50 Z9 50 U1 0 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0003-2700 J9 ANAL CHEM JI Anal. Chem. PD JUL 1 PY 1991 VL 63 IS 13 BP 1256 EP 1261 DI 10.1021/ac00013a014 PG 6 WC Chemistry, Analytical SC Chemistry GA FV113 UT WOS:A1991FV11300016 ER PT J AU SMITH, KJ DAVIS, C JAMES, WD SKELTON, HG ANGRITT, P AF SMITH, KJ DAVIS, C JAMES, WD SKELTON, HG ANGRITT, P TI ACYCLOVIR-RESISTANT VARICELLA ZOSTER RESPONSIVE TO FOSCARNET SO ARCHIVES OF DERMATOLOGY LA English DT Letter ID ACQUIRED-IMMUNODEFICIENCY-SYNDROME; HERPES-SIMPLEX VIRUS; PATIENT; INFECTION; THERAPY; AIDS C1 WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. WALTER REED ARMY MED CTR,WASHINGTON,DC 20307. ARMED FORCES INST PATHOL,DEPT DERMATOL,WASHINGTON,DC 20306. ARMED FORCES INST PATHOL,AIDS REGISTRY,WASHINGTON,DC 20306. RP SMITH, KJ (reprint author), WALTER REED ARMY MED CTR,WASHINGTON,DC 20307, USA. NR 6 TC 30 Z9 30 U1 0 U2 0 PU AMER MEDICAL ASSOC PI CHICAGO PA 515 N STATE ST, CHICAGO, IL 60610 SN 0003-987X J9 ARCH DERMATOL JI Arch. Dermatol. PD JUL PY 1991 VL 127 IS 7 BP 1069 EP 1071 DI 10.1001/archderm.127.7.1069 PG 3 WC Dermatology SC Dermatology GA FW298 UT WOS:A1991FW29800031 PM 1648341 ER PT J AU BURTON, RR AF BURTON, RR TI PANEL ON DELIBERATE G-INDUCED LOSS OF CONSCIOUSNESS - INTRODUCTION SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article; Proceedings Paper CT 1989 ANNUAL SCIENTIFIC MEETING OF THE AEROSPACE MEDICAL ASSOC CY 1989 CL WASHINGTON, DC SP AEROSP MED ASSOC ID AIRCRAFT; RECOVERY AB Over the last decade, G-induced loss of consciousness (G-LOC) has been recognized as a significant operational problem for pilots of high performance aircraft in both the U.S. Air Force and U.S. Navy. Consequently, government laboratories have initiated research studies to learn more about the G-LOC phenomenon in an attempt to reduce its hazards. Many of these studies require the occurrence of LOC during their conduct. For this reason, animal models have been developed to use in these studies. However, even though sophisticated animal models such as baboons can be taught to perform tasks before and after G-LOC has occurred, these models have deficiencies that can be overcome only by the use of human volunteers who willingly submit to G-LOC studies on the centrifuge. Such human G-LOC studies began in World War II and continue today. These studies are presently conducted without guidelines regarding subject selection, numbers of G-LOCs allowed per subject per unit time, restraint systems, or specific medical examinations required before, during, and after each episode of LOC, or after each completed study. This panel will discuss what is known about the pathophysiology of G-LOC, the limitations of animal models in these types of studies, the possible medical and psychological sequelae, and the legal implications of conducting deliberate G-LOC research. We hope that the information developed by this panel will be useful to laboratory human-use review committees in determining the requirements and the nature of guidelines for conducting such studies. C1 USAF,SCH AEROSP MED,BROOKS AFB,TX 78235. NR 17 TC 0 Z9 1 U1 0 U2 0 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD JUL PY 1991 VL 62 IS 7 BP 609 EP 611 PG 3 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA FU023 UT WOS:A1991FU02300001 PM 1898292 ER PT J AU WERCHAN, PM AF WERCHAN, PM TI PHYSIOLOGICAL BASES OF G-INDUCED LOSS OF CONSCIOUSNESS (G-LOC) SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article; Proceedings Paper CT 1989 ANNUAL SCIENTIFIC MEETING OF THE AEROSPACE MEDICAL ASSOC CY 1989 CL WASHINGTON, DC SP AEROSP MED ASSOC ID BRAIN ISCHEMIA AB Exposure of pilots to high sustained +Gz (head to feet) or rapid onset of +Gz can produce a variety of pathophysiologic effects ranging from the loss of peripheral vision to total blackout and, finally, G-induced loss of consciousness (G-LOC). A G-LOC research program divided into four phases has been organized at USAFSAM/Crew Technology Division. In contrast to previous studies in acceleration, this program will focus exclusively on the ultimate problem in G-LOC; namely, inadequate cerebral perfusion leading to impaired brain energy metabolism, structure and function. The primary objective of this research program is to identify and arrange chronologically the numerous physiological and biochemical alterations in the brain that comprise the mechanism of G-LOC. RP WERCHAN, PM (reprint author), USAF,SCH AEROSP MED,DIV CREW TECHNOL,BROOKS AFB,TX 78235, USA. NR 14 TC 9 Z9 10 U1 0 U2 0 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD JUL PY 1991 VL 62 IS 7 BP 612 EP 614 PG 3 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA FU023 UT WOS:A1991FU02300002 PM 1898293 ER PT J AU BURNS, JW WERCHAN, PM FANTON, JW DOLLINS, AB AF BURNS, JW WERCHAN, PM FANTON, JW DOLLINS, AB TI PERFORMANCE RECOVERY FOLLOWING +GZ-INDUCED LOSS OF CONSCIOUSNESS SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article; Proceedings Paper CT 1989 ANNUAL SCIENTIFIC MEETING OF THE AEROSPACE MEDICAL ASSOC CY 1989 CL WASHINGTON, DC SP AEROSP MED ASSOC AB Seven male baboons (average weight, 20.6 kg) were trained in a simple shock-avoidance performance task on the USAFSAM centrifuge. A red light was presented to the baboon at approximate 2-s intervals. The animal was allowed 1 s to turn off the light or receive a 1-s shock. The shock could be abbreviated by a late trigger pull. Thus, the animal could avoid, escape, or accept the full shock. EEG was monitored from three transcranial stainless steel electrodes. Loss of consciousness (LOC) was induced by a rapid onset (4 or 6 G/s) exposure to 8 +Gz and sustained until LOC was identified by a near isoelectric EEG signal. Performance recovery time was measured from the return of EEG activity to the time when the animal resumed the performance task. These data were compared with previously obtained human data and found to be very similar. Also, it was found that time of performance recovery became significantly shorter after multiple LOC exposures and the performance recovery time significantly increased with increased time of unconsciousness. This study demonstrates the utility of the baboon as an animal model for G-induced LOC (G-LOC) research. C1 USAF,SCH AEROSP MED,DIV VET SCI,BROOKS AFB,TX 78235. RP BURNS, JW (reprint author), USAF,SCH AEROSP MED,VNB,DIV CREW TECHNOL,BROOKS AFB,TX 78235, USA. NR 4 TC 5 Z9 5 U1 0 U2 0 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD JUL PY 1991 VL 62 IS 7 BP 615 EP 617 PG 3 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA FU023 UT WOS:A1991FU02300003 PM 1898294 ER PT J AU HICKMAN, JR AF HICKMAN, JR TI PANEL SUMMARY - FROM ZEN RIDDLE TO THE RAZORS EDGE SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article; Proceedings Paper CT 1989 ANNUAL SCIENTIFIC MEETING OF THE AEROSPACE MEDICAL ASSOC CY 1989 CL WASHINGTON, DC SP AEROSP MED ASSOC ID CONSCIOUSNESS; AIRCRAFT; GZ AB A summary of the Panel on Deliberate G-induced Loss of Consciousness reviews the global issue of rendering human subjects unconscious in the centrifuge as a research procedure. Major issues summarized are informed consent, a common taxonomy for G-LOC events, and medical surveillance of subjects made deliberately unconscious. RP HICKMAN, JR (reprint author), USAF,SCH AEROSP MED,DIV CLIN SCI,MC,DET 4,AL NG,BROOKS AFB,TX 78235, USA. NR 7 TC 1 Z9 1 U1 0 U2 0 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD JUL PY 1991 VL 62 IS 7 BP 632 EP 637 PG 6 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA FU023 UT WOS:A1991FU02300007 PM 1898298 ER PT J AU RUDGE, FW SHAFER, MR AF RUDGE, FW SHAFER, MR TI THE EFFECT OF DELAY ON TREATMENT OUTCOME IN ALTITUDE-INDUCED DECOMPRESSION-SICKNESS SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article AB Records at the USAF School of Aerospace Medicine, Hyperbaric Medicine Division, were reviewed to determine whether a relationship exists between the length of time from development of symptoms of altitude chamber decompression sickness (DCS) to start of compression therapy and the outcome of treatment. During the 5-year period from 1 January 1984 to 31 December 1988, 233 cases of altitude chamber DCS were treated in USAF hyperbaric chambers. Information obtained from each record included age, sex, time from exposure to symptom onset, time from symptom onset to start of compression therapy, time required for resolution of symptoms, and number of treatment failures (failure to resolve during the first treatment dive or recurrence of symptoms after the first dive). Analysis of the data obtained from treatment records reveals a direct relationship between length of delay to treatment with compression therapy and outcome of treatment. Patients successfully treated with a single treatment dive had an average delay to treatment of 10.6 h. Patients that failed treatment after one dive (failed to resolve or recurred) had an average delay to treatment of 18.2 h. The difference between these groups is significant (p < 0.05). Outcome of treatment was not significantly related to patient age, sex, or type of symptoms. A discussion of factors causing delays in treatment of decompression sickness is included. RP RUDGE, FW (reprint author), USAF,SCH AEROSP MED,JEFFERSON C DAVIS HYPERBAR LAB,BROOKS AFB,TX 78235, USA. NR 12 TC 22 Z9 22 U1 0 U2 0 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD JUL PY 1991 VL 62 IS 7 BP 687 EP 690 PG 4 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA FU023 UT WOS:A1991FU02300016 PM 1898307 ER PT J AU AHERN, AA AF AHERN, AA TI PROPERLY USE EXPLOSION-PROOF ELECTRICAL-EQUIPMENT SO CHEMICAL ENGINEERING PROGRESS LA English DT Article RP AHERN, AA (reprint author), USAF,SAFETY PROGRAM,CAPE CANAVERAL,AIR FORCE STN,CAPE CANAVERAL,FL, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER INST CHEMICAL ENGINEERS PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 0360-7275 J9 CHEM ENG PROG JI Chem. Eng. Prog. PD JUL PY 1991 VL 87 IS 7 BP 65 EP 68 PG 4 WC Engineering, Chemical SC Engineering GA FV994 UT WOS:A1991FV99400018 ER PT J AU CHYU, MK OBERLY, CE AF CHYU, MK OBERLY, CE TI EFFECTS OF TRANSVERSE HEAT-TRANSFER ON NORMAL ZONE PROPAGATION IN METAL-CLAD HIGH-TEMPERATURE SUPERCONDUCTOR COIL TAPE SO CRYOGENICS LA English DT Article; Proceedings Paper CT INTERNATIONAL SYMP ON SUPERCONDUCTOR STABILITY ( SSS 90 ) CY NOV 13-15, 1990 CL YOKOHAMA NATL UNIV, YOKOHAMA, JAPAN SP INST ELECT ENGINEERS JAPAN, CRYOGEN ASSOC JAPAN, MINIST EDUC JAPAN HO YOKOHAMA NATL UNIV DE SUPERCONDUCTORS; HIGH TC SUPERCONDUCTIVITY; HEAT TRANSFER ID STABILITY AB The effects of transverse heat transfer on the dynamic evolution of the normal zone in a composite tape made of YBCO superconductor with silver cladding as stabilizer are examined numerically. The numerical model solves the conjugate two-dimensional transient heat equation coupled with current sharing between clearly segregated superconductor and stabilizer. Heat removal in the transverse direction is characterized by a heat conductance imposed on the stabilizer's outer surface. The computational results indicate that the present tape configuration is intrinsically much more stable against a pulse disturbance that its counterparts with volume-averaged material properties and treated one-dimensionally. Conventional one-dimensional analyses for magnet stability have been demonstrated to be too conservative in many respects. The normal zone propagation characteristics and the detailed distribution of heat generation in the composite depend strongly on both the transverse heat transfer and the magnitude of operating current. Ohmic heating in the stabilizer can be very significant, especially for cases with low heat conductance and/or large operating current. C1 WRIGHT RES & DEV CTR,AERO PROPULS & POWER LAB,WRIGHT PATTERSON AFB,OH 45433. RP CHYU, MK (reprint author), CARNEGIE MELLON UNIV,DEPT MECH ENGN,PITTSBURGH,PA 15213, USA. NR 17 TC 5 Z9 5 U1 0 U2 0 PU BUTTERWORTH-HEINEMANN LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB SN 0011-2275 J9 CRYOGENICS JI Cryogenics PD JUL PY 1991 VL 31 IS 7 BP 680 EP 686 DI 10.1016/0011-2275(91)90073-6 PG 7 WC Thermodynamics; Physics, Applied SC Thermodynamics; Physics GA FZ610 UT WOS:A1991FZ61000041 ER PT J AU GRAY, SE BURGESS, JO AF GRAY, SE BURGESS, JO TI AN INVIVO AND INVITRO COMPARISON OF 2 DENTIN BONDING AGENTS SO DENTAL MATERIALS LA English DT Article AB The in vitro and in vivo shear bond strengths of two dentin bonding agents to dentin were measured by use of a goat model. The dentin was exposed in the mandibular incisors of 10 adult goats while they were maintained under general anesthesia. Separate gingival and incisal areas of dentin were isolated with Teflon tape, exposing an area 2.83 mm in diameter. GLUMA or Scotchbond II was applied to those dentin areas according to the manufacturers' directions. A column of resin was then applied over the bonding agent and light-cured. Two hours later, the animals were killed and the teeth removed. The teeth were then mounted in acrylic resin, and the resin composite tube was loaded in shear until failure on an Instron. Seven days later, the extracted teeth were re-prepared and the same bonding procedure re-applied. These teeth were placed in the Instron and loaded in shear until failure. Thirteen months later, the teeth bonded with GLUMA were re-prepared and bonded in the same manner as above. The resin composite was loaded in shear until failure. There was no significant difference between the two-hour in vivo bond strength and the seven-day or the 13-month in vitro bond strength with GLUMA. There was no significant difference between the two-hour in vivo or the seven-day in vitro bond strength for Scotchbond II. There was no significant difference between the shear bond strengths of the two dentin bonding agents. C1 WILFORD HALL USAF MED CTR,DENT DIRECTORATE,LACKLAND AFB,TX 78236. NR 0 TC 8 Z9 9 U1 0 U2 0 PU ACAD DENTAL MATERIALS PI DALLAS PA BAYLOR COLLEGE DENTISTRY, 3302 GASTON AVE, DALLAS, TX 75266-0677 SN 0109-5641 J9 DENT MATER JI Dent. Mater. PD JUL PY 1991 VL 7 IS 3 BP 161 EP 165 DI 10.1016/0109-5641(91)90036-X PG 5 WC Dentistry, Oral Surgery & Medicine; Materials Science, Biomaterials SC Dentistry, Oral Surgery & Medicine; Materials Science GA GA913 UT WOS:A1991GA91300005 PM 1813338 ER PT J AU DAVIS, C AF DAVIS, C TI HIV-SPECIFIC TREATMENT SO DERMATOLOGIC CLINICS LA English DT Review RP DAVIS, C (reprint author), WILFORD HALL USAF MED CTR,SGHMM1,LACKLAND AFB,TX 78236, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0733-8635 J9 DERMATOL CLIN JI Dermatol. Clin. PD JUL PY 1991 VL 9 IS 3 BP 585 EP 596 PG 12 WC Dermatology SC Dermatology GA FU803 UT WOS:A1991FU80300018 PM 1714803 ER PT J AU MITCHELL, VF AF MITCHELL, VF TI SUPPORTING THE TROOPS SO FORTUNE LA English DT Letter RP MITCHELL, VF (reprint author), USAF,OAK HARBOR,WA, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU TIME INC PI NEW YORK PA TIME & LIFE BUILDING ROCKEFELLER CENTER, NEW YORK, NY 10020-1393 SN 0015-8259 J9 FORTUNE JI Fortune PD JUL 1 PY 1991 VL 124 IS 1 BP 33 EP 33 PG 1 WC Business SC Business & Economics GA FQ613 UT WOS:A1991FQ61300012 ER PT J AU HATSELL, CP AF HATSELL, CP TI A QUASI-POWER THEOREM FOR BULK CONDUCTORS - COMMENTS ON RHEOENCEPHALOGRAPHY SO IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING LA English DT Article AB A special case of Tellegen's theorem, the quasi-power theorem, can be readily developed for bulk conductors, and a bulk conductor analog of Cohn's theorem follows which allows prediction of sensitivity of impedance plethysmographic measurements to tissue impedance changes in a system of bulk conductors. An example addressing the effects of scalp and cranium on the inference of regional blood flow in brain tissue begs additional questions about the origins of the rheoencephalogram. C1 USAF,HARRY G ARMSTRONG AEROSP MED RES LAB,WRIGHT PATTERSON AFB,OH 45433. NR 10 TC 10 Z9 10 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9294 J9 IEEE T BIO-MED ENG JI IEEE Trans. Biomed. Eng. PD JUL PY 1991 VL 38 IS 7 BP 665 EP 669 DI 10.1109/10.83566 PG 5 WC Engineering, Biomedical SC Engineering GA FU239 UT WOS:A1991FU23900007 PM 1879859 ER PT J AU REE, MJ EARLES, JA AF REE, MJ EARLES, JA TI THE STABILITY OF G ACROSS DIFFERENT METHODS OF ESTIMATION SO INTELLIGENCE LA English DT Article AB Multiple methods were used to estimate g (general cognitive ability) from a representative multiple-aptitude test battery. These methods included unrotated principal components, unrotated principal factors, and hierarchical factor analysis. Several variants of the hierarchical factor analyses were used ranging from three to eight factors. Fourteen estimates of g were made and computed in the normative sample for the test. The correlations of these estimates were high, ranging from .930 to .999. For this test, all other multiple-aptitude batteries, and any other set of variables that displays positive manifold, it is argued that the methods are equivalent. This is not due to similarity of factoring techniques, but rather to the positive intercorrelations of the variables as demonstrated by Wilks (1938). RP REE, MJ (reprint author), USAF,HUMAN RESOURCES LAB,MOA,BROOKS AFB,TX 78235, USA. NR 24 TC 58 Z9 58 U1 1 U2 7 PU ABLEX PUBL CORP PI NORWOOD PA 355 CHESTNUT ST, NORWOOD, NJ 07648 SN 0160-2896 J9 INTELLIGENCE JI Intelligence PD JUL-SEP PY 1991 VL 15 IS 3 BP 271 EP 278 DI 10.1016/0160-2896(91)90036-D PG 8 WC Psychology, Multidisciplinary SC Psychology GA HC421 UT WOS:A1991HC42100002 ER PT J AU CARPENTER, NJ TAYLOR, RL KATONA, MG AF CARPENTER, NJ TAYLOR, RL KATONA, MG TI LAGRANGE CONSTRAINTS FOR TRANSIENT FINITE-ELEMENT SURFACE-CONTACT SO INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING LA English DT Article ID ALGORITHMS AB A new approach to enforce surface contact conditions in transient non-linear finite element problems is developed in this paper. The method is based on the Lagrange multiplier concept and is compatible with explicit time integration operators. Compatibility with explicit operators is established by referencing Lagrange multipliers one time increment ahead of associated surface contact displacement constraints. However, the method is not purely explicit because a coupled system of equations must be solved to obtain the Lagrange multipliers. An important development herein is the formulation of a highly efficient method to solve the Lagrange multiplier equations. The equation solving strategy is a modified Gauss-Seidel method in which non-linear surface contact force conditions are enforced during iteration. The new surface contact method presented has two significant advantages over the widely accepted penalty function method: surface contact conditions are satisfied more precisely, and the method does not adversely affect the numerical stability of explicit integration. Transient finite element analysis results are presented for problems involving impact and sliding with friction. A brief review of the classical Lagrange multiplier method with implicit integration is also included. C1 UNIV CALIF BERKELEY,DEPT CIVIL ENGN,BERKELEY,CA 94720. USAF HEADQUARTERS,RD,TYNDALL AFB,FL. RP CARPENTER, NJ (reprint author), TRW CO INC,1 SPACE PK,REDONDO BEACH,CA 90278, USA. NR 14 TC 167 Z9 173 U1 0 U2 7 PU JOHN WILEY & SONS LTD PI W SUSSEX PA BAFFINS LANE CHICHESTER, W SUSSEX, ENGLAND PO19 1UD SN 0029-5981 J9 INT J NUMER METH ENG JI Int. J. Numer. Methods Eng. PD JUL PY 1991 VL 32 IS 1 BP 103 EP 128 DI 10.1002/nme.1620320107 PG 26 WC Engineering, Multidisciplinary; Mathematics, Interdisciplinary Applications SC Engineering; Mathematics GA FW267 UT WOS:A1991FW26700006 ER PT J AU ANHOLT, R WORLEY, R NEIDHARD, R AF ANHOLT, R WORLEY, R NEIDHARD, R TI STATISTICAL-ANALYSIS OF GAAS-MESFET S-PARAMETER EQUIVALENT-CIRCUIT MODELS SO INTERNATIONAL JOURNAL OF MICROWAVE AND MILLIMETER-WAVE COMPUTER-AIDED ENGINEERING LA English DT Article AB We compare the ability of three different equivalent-circuit extraction methods to give ensembles of model parameters that accurately predict not only average S-parameters but the S-parameter statistics, i.e., the standard deviations and intercorrelations between the real and imaginary parts. Measurements were made for 400 GaAs MESFETs fabricated on a single wafer with an MBE-grown active layer. Data is compared for different biases. We find that bimodal distributions give correlations that the equivalent-circuit models fail to model. The possibility of using uncorrelated equivalent-circuit values is also discussed. C1 USAF,WRIGHT RES & DEV CTR,ELECTRON TECHNOL LAB,WRIGHT PATTERSON AFB,OH 45433. USAF,AVION LAB,WRIGHT PATTERSON AFB,OH 45433. RP ANHOLT, R (reprint author), GATEWAY MODELING INC,1604 E RIVER TERRACE,MINNEAPOLIS,MN 55414, USA. NR 9 TC 13 Z9 13 U1 0 U2 0 PU JOHN WILEY & SONS INC PI NEW YORK PA 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 1050-1827 J9 INT J MICROWAVE MILL JI Int. J. Microw. Millimeter-Wave Comput.-Aided Eng. PD JUL PY 1991 VL 1 IS 3 BP 263 EP 270 DI 10.1002/mmce.4570010304 PG 8 WC Computer Science, Interdisciplinary Applications; Engineering, Electrical & Electronic SC Computer Science; Engineering GA FR783 UT WOS:A1991FR78300002 ER PT J AU ANHOLT, R KING, J WORLEY, R GILLESPIE, J AF ANHOLT, R KING, J WORLEY, R GILLESPIE, J TI RELATIONSHIP BETWEEN PROCESS AND MATERIALS VARIATIONS AND VARIATIONS IN S-CIRCUIT PARAMETERS AND EQUIVALENT-CIRCUIT PARAMETERS SO INTERNATIONAL JOURNAL OF MICROWAVE AND MILLIMETER-WAVE COMPUTER-AIDED ENGINEERING LA English DT Article ID DEVICE AB Using a variety of DC and RF measurements of electrical parameters of GaAs MESFETs and the GATES process and device modeling program, we derive distributions of the root process variations. These distributions are then used in GATES Monte Carlo simulations to compute distributions of equivalent-circuit parameters and S-parameters at a fixed frequency (6 GHz). We find reasonable agreement between the simulated variations and the standard deviations in the measured S-parameters, enabling us to determine the most important process variations affecting S-parameter uniformity. C1 USAF,WRIGHT RES & DEV CTR,ELECTRON TECHNOL LAB,WRIGHT PATTERSON AFB,OH 45433. USAF,AVION LAB,WRIGHT PATTERSON AFB,OH 45433. USAF,MICROWAVE MILLIMETER WAVE MONOLITH CIRCUITS PROGRAM,WRIGHT PATTERSON AFB,OH 45433. RP ANHOLT, R (reprint author), GATEWAY MODELING INC,1604 E RIVER TERRACE,MINNEAPOLIS,MN 55414, USA. NR 7 TC 1 Z9 1 U1 0 U2 0 PU JOHN WILEY & SONS INC PI NEW YORK PA 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 1050-1827 J9 INT J MICROWAVE MILL JI Int. J. Microw. Millimeter-Wave Comput.-Aided Eng. PD JUL PY 1991 VL 1 IS 3 BP 271 EP 281 DI 10.1002/mmce.4570010305 PG 11 WC Computer Science, Interdisciplinary Applications; Engineering, Electrical & Electronic SC Computer Science; Engineering GA FR783 UT WOS:A1991FR78300003 ER PT J AU PARSONS, DS MAIR, EA AF PARSONS, DS MAIR, EA TI VOLUNTEER OTOLARYNGOLOGY PRACTICE IN RURAL MEXICO SO INTERNATIONAL JOURNAL OF PEDIATRIC OTORHINOLARYNGOLOGY LA English DT Article DE MEXICO; MEDICAL MISSION; THIRD-WORLD AB Medical missions, particularly with religious or military affiliation, are becoming more commonly performed in the Third World. Modern surgical techniques for correcting congential anomalies frequently require stages operative procedures with long-term follow-up. However, in remote or isolated Third World villages, operative procedures must often be done at a single setting, without staging, utilizing limited intraoperative equipment. Very short postoperative hospitalizations may be all that are available and follow-ups are severely limited. We report our experience on a two-week mission to Mexico where 46 major otolaryngologic surgeries were performed. Follow-up was limited, in most patients, to visits within only a few days of the surgical procedure. Techniques for Third World otolaryngologic surgical experience are discussed including the correction of cleft deformities. RP PARSONS, DS (reprint author), WILFORD HALL USAF MED CTR,DEPT OTOLARYNGOL HEAD & NECK SURG,LACKLAND AFB,TX 78236, USA. NR 0 TC 3 Z9 3 U1 0 U2 0 PU ELSEVIER SCI IRELAND LTD PI CLARE PA CUSTOMER RELATIONS MANAGER, BAY 15, SHANNON INDUSTRIAL ESTATE CO, CLARE, IRELAND SN 0165-5876 J9 INT J PEDIATR OTORHI JI Int. J. Pediatr. Otorhinolaryngol. PD JUL PY 1991 VL 22 IS 1 BP 19 EP 27 DI 10.1016/0165-5876(91)90093-Q PG 9 WC Otorhinolaryngology; Pediatrics SC Otorhinolaryngology; Pediatrics GA GA768 UT WOS:A1991GA76800003 PM 1917335 ER PT J AU SCHWARTZ, Z LANGSTON, GG SWAIN, LD BOYAN, BD AF SCHWARTZ, Z LANGSTON, GG SWAIN, LD BOYAN, BD TI INHIBITION OF 1,25-(OH)2D3-DEPENDENT AND 24,25-(OH)2D3-DEPENDENT STIMULATION OF ALKALINE-PHOSPHATASE ACTIVITY BY A23187 SUGGESTS A ROLE FOR CALCIUM IN THE MECHANISM OF VITAMIN-D REGULATION OF CHONDROCYTE CULTURES SO JOURNAL OF BONE AND MINERAL RESEARCH LA English DT Article ID CARTILAGE CELLS-INVITRO; ISOLATED BONE-CELLS; D METABOLITES; RESTING ZONE; GROWTH ZONE; 1,25-DIHYDROXYVITAMIN-D3; TRANSPORT; CHICKS; 1,25-DIHYDROXYCHOLECALCIFEROL; LOCALIZATION AB This study used the ionophore, A23187, to examine the hypothesis that the regulation of alkaline phosphatase and phospholipase A2 activity by vitamin D3 metabolites in cartilage cells is mediated by changes in calcium influx. Confluent, fourth-passage cultures of growth zone and resting zone chondrocytes from the costochondral cartilage of 125 g rats were incubated with 0.01-10-mu-M A23187. Specific activities of alkaline phosphatase and phospholipase A2 were measured in the cell layer and in isolated plasma membranes and matrix vesicles. There was an inhibition of alkaline phosphatase specific activity at 0.1-mu-M A23187 in resting zone cells and at 0.1 and 1-mu-M in growth zone chondrocytes. At these concentrations of ionophore, the Ca-45 content of the chondrocytes was shown to increase. Both the plasma membrane and matrix vesicle enzyme activities were inhibited. There was no effect of ionophore on matrix vesicle or plasma membrane phospholipase A2 in either cell type. In contrast, alkaline phosphatase activity is stimulated when growth zone chondrocytes are incubated with 1,25-(OH)2D3 and in resting zone cells incubated with 24,25-(OH)2D3. Phospholipase A2 activity is differentially affected depending on the metabolite used and the cell examined. Addition of ionophore to cultures preincubated with 1,25-(OH)2D3 or 24,25-(OH)2D3 blocked the stimulation of alkaline phosphatase by the vitamin D3 metabolites in a dose-dependent manner. The effects of ionophore were not due to a direct effect on the membrane enzymes since enzyme activity in isolated membranes incubated with A23187 in vitro was unaffected. These results suggest a role for calcium in the action of vitamin D metabolites on chondrocyte membrane enzyme activity but indicate that mechanisms other than merely Ca2+ influx per se are involved. C1 HEBREW UNIV JERUSALEM,HADASSAH SCH DENT MED,DEPT PERIODONT,7703 FLOYD CURL DR,JERUSALEM,ISRAEL. UNIV TEXAS,HLTH SCI CTR,DEPT ORTHOPAED,SAN ANTONIO,TX 78284. USAF,WILFORD HALL MED CTR,DEPT PERIODONT,LACKLAND AFB,TX 78236. FU NIDCR NIH HHS [DE-08603, DE-05937] NR 33 TC 23 Z9 23 U1 0 U2 1 PU BLACKWELL SCIENCE INC PI CAMBRIDGE PA 238 MAIN ST, CAMBRIDGE, MA 02142 SN 0884-0431 J9 J BONE MINER RES JI J. Bone Miner. Res. PD JUL PY 1991 VL 6 IS 7 BP 709 EP 718 PG 10 WC Endocrinology & Metabolism SC Endocrinology & Metabolism GA GN789 UT WOS:A1991GN78900007 PM 1659121 ER PT J AU DEMAIO, J BOYD, RS RENSI, R CLARK, A AF DEMAIO, J BOYD, RS RENSI, R CLARK, A TI FALSE-POSITIVE CHLAMYDIAZYME RESULTS DURING URINE SEDIMENT ANALYSIS DUE TO BACTERIAL URINARY-TRACT INFECTIONS SO JOURNAL OF CLINICAL MICROBIOLOGY LA English DT Article ID TRACHOMATIS; DIAGNOSIS AB Our study examined whether urinary tract infections (UTIs) would cause false-positive results when urine sediment was tested with the Chlamydiazyme (CZ) system. Thirty-six infected urine samples and fifteen controls were studied. All controls were negative. Forty-seven percent of Escherichia coli UTIs (n = 30) and 100% of Klebsiella pneumoniae UTIs (n = 4) were positive on CZ testing of urine sediment. Nine E. coli UTIs positive by CZ were negative by direct fluorescent-antibody staining. When suspensions of the pure cultures were analyzed, 47% of E. coli and 100% of K. pneumoniae samples were CZ positive. False-positive results were not related to organism biotype or urine characteristics, including pH, specific gravity, and leukocyte count. We conclude that the presence of a UTI and also bacterial contamination must be ruled out prior to urine sediment testing. C1 USAF,OFF MED SUPPORT,SGSI,BROOKS AFB,TX 78235. UNIV WASHINGTON,HARBORVIEW MED CTR,SEATTLE,WA 98104. RP DEMAIO, J (reprint author), TAC,MED GRP 27,CANNON AFB,NM 88103, USA. NR 8 TC 18 Z9 18 U1 0 U2 0 PU AMER SOC MICROBIOLOGY PI WASHINGTON PA 1325 MASSACHUSETTS AVENUE, NW, WASHINGTON, DC 20005-4171 SN 0095-1137 J9 J CLIN MICROBIOL JI J. Clin. Microbiol. PD JUL PY 1991 VL 29 IS 7 BP 1436 EP 1438 PG 3 WC Microbiology SC Microbiology GA FT634 UT WOS:A1991FT63400031 PM 1885739 ER PT J AU JU, JW LEE, X AF JU, JW LEE, X TI MICROMECHANICAL DAMAGE MODELS FOR BRITTLE SOLIDS .1. TENSILE LOADINGS SO JOURNAL OF ENGINEERING MECHANICS-ASCE LA English DT Article ID ANISOTROPIC ELASTIC BODY; BICRYSTAL INTERFACES; ENERGY; MODULI; CRACKS; BIMATERIAL; MECHANICS; CONCRETE; BEHAVIOR; STRESS AB Three-dimensional micromechanical anisotropic damage models for microcrack-weakened brittle solids are presented. The self-consistent method is employed together with analytical solutions for weakly interacting elliptical microcracks in anisotropic media. The microcrack-induced inelastic compliances are systematically derived in terms of anisotropic microcrack opening displacements. The sizes, orientations and densities of microcracks are taken as random variables. Both stationary and evolutionary damage models are considered. Microcrack kinetic equations are characterized through the use of fracture mechanics stability criteria and microcrack geometry within a representative volume element. Thus, the proposed models have constitutive predictive capability. This general framework is then applied to analyze the constitutive behavior of concrete under uniaxial or triaxial tension loading/unloading stress paths. Simple and efficient computational algorithm as well as uniaxial experimental validation are given to illustrate the potential capability of the proposed framework. It is emphasized that no fitted phenomenological material parameter is employed in the proposed damage models. C1 APPL RES ASSOCIATES INC,TYNDALL AFB,FL 32403. RP JU, JW (reprint author), PRINCETON UNIV,DEPT CIV ENGN & OPERAT RES,PRINCETON,NJ 08544, USA. NR 39 TC 60 Z9 67 U1 0 U2 9 PU ASCE-AMER SOC CIVIL ENG PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2398 SN 0733-9399 J9 J ENG MECH-ASCE JI J. Eng. Mech.-ASCE PD JUL PY 1991 VL 117 IS 7 BP 1495 EP 1514 DI 10.1061/(ASCE)0733-9399(1991)117:7(1495) PG 20 WC Engineering, Mechanical SC Engineering GA FU149 UT WOS:A1991FU14900006 ER PT J AU LEE, X JU, JW AF LEE, X JU, JW TI MICROMECHANICAL DAMAGE MODELS FOR BRITTLE SOLIDS .2. COMPRESSIVE LOADINGS SO JOURNAL OF ENGINEERING MECHANICS-ASCE LA English DT Article ID ANISOTROPIC ELASTIC BODY; CRACK; CONCRETE; BEHAVIOR; FAILURE; MODULI AB In this sequel, three-dimensional self-consistent damage models for brittle solids under compressive triaxial loadings are developed based on micro-mechanics and microcrack geometry within a representative volume. Due to frictional sliding of closed microcracks under compressive loadings, overall compliances of damaged brittle solids are nonsymmetric and anisotropic. Accordingly, solutions of microcrack opening displacements for a single penny-shaped microcracks embedded in a general nonsymmetric fully anisotropic elastic medium are derived in this paper. The corresponding damage-induced inelastic compliances are subsequently constructed. In addition to stationary microcrack formulations, micromechanical evolutionary damage models are presented. Both cleavage 1 and cleavage 2 deformation processes are considered. Computational procedures and micromechanical simulations for uniaxial and triaxial compression tests are presented for both the present and Taylor's models. Finally, these micromechanical model simulations are compared with available experimental data. C1 PRINCETON UNIV,DEPT CIV ENGN & OPERAT RES,PRINCETON,NJ 08544. RP LEE, X (reprint author), APPL RES ASSOCIATES INC,POB 40128,TYNDALL AFB,FL 32403, USA. NR 19 TC 30 Z9 39 U1 0 U2 3 PU ASCE-AMER SOC CIVIL ENG PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2398 SN 0733-9399 J9 J ENG MECH-ASCE JI J. Eng. Mech.-ASCE PD JUL PY 1991 VL 117 IS 7 BP 1515 EP 1536 DI 10.1061/(ASCE)0733-9399(1991)117:7(1515) PG 22 WC Engineering, Mechanical SC Engineering GA FU149 UT WOS:A1991FU14900007 ER PT J AU KUHLMAN, JJ LEVINE, B SMITH, ML HORDINSKY, JR AF KUHLMAN, JJ LEVINE, B SMITH, ML HORDINSKY, JR TI TOXICOLOGICAL FINDINGS IN FEDERAL AVIATION ADMINISTRATION GENERAL-AVIATION ACCIDENTS SO JOURNAL OF FORENSIC SCIENCES LA English DT Article DE TOXICOLOGY; AIRCRAFT; DEATH; DRUG IDENTIFICATION; AVIATION FATALITIES ID FATALLY INJURED DRIVERS; DRUG-USE AB Blood, urine, and tissue specimens were received from 377 Federal Aviation Administration (FAA) aviation fatalities during fiscal year 1989. Carbon monoxide at less than 10% saturation was found in 94% of the cases, and cyanide at less than 0.5 mg/L was found in 96% of the cases. Ethanol at greater than 10 mg/dL was found in 14.8% of the cases, but only 4.5% were determined to be due to ethanol ingestion from toxicological findings. Excluding nicotine and ethanol, 12.6% of the cases were positive for one or more drugs. Acetaminophen and salicylate were the most frequently found drugs. Cannabinoids were found in 1.3% of the cases and benzoylecgonine in 1.6%. There was minimal use of therapeutic drugs that cause central nervous system depression or stimulation. These results show no consistent pattern of drug involvement in civilian aviation fatalities. C1 ARMED FORCES INST PATHOL,DIV FORENS TOXICOL,WASHINGTON,DC 20306. USAF,WASHINGTON,DC 20330. USA,WASHINGTON,DC 20310. FAA,INST CIVIL AEROMED,DIV AEROMED RES,OKLAHOMA CITY,OK. NR 17 TC 27 Z9 27 U1 0 U2 2 PU AMER SOC TESTING MATERIALS PI W CONSHOHOCKEN PA 100 BARR HARBOR DR, W CONSHOHOCKEN, PA 19428-2959 SN 0022-1198 J9 J FORENSIC SCI JI J. Forensic Sci. PD JUL PY 1991 VL 36 IS 4 BP 1121 EP 1128 PG 8 WC Medicine, Legal SC Legal Medicine GA FY039 UT WOS:A1991FY03900022 PM 1919471 ER PT J AU ADLERGOLDEN, SM MATTHEW, MW SMITH, DR AF ADLERGOLDEN, SM MATTHEW, MW SMITH, DR TI UPPER ATMOSPHERIC INFRARED RADIANCE FROM CO2 AND NO OBSERVED DURING THE SPIRIT-1 ROCKET EXPERIMENT SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article ID LIMB RADIANCE; EMISSION; SPECTRA; OZONE; HIRIS AB Spectral limb radiance data on CO2 nu-2 and NO 5.3-mu-m emissions obtained in the Spectral Infrared Interferometric Telescope rocket experiment have been analyzed. The data cover auroral intensities from several kilorayleighs to over 100 kR at 391.4 nm, and tangent heights of approximately 70-200 km at high latitudes (60-degrees-65-degrees-N). Volumetric emission and kinetic temperature profiles have been obtained using linear least squares inversion procedures. The CO2 nu-2 radiance profile is found to be similar to previous observations. The NO 5.3-mu-m emission is somewhat weaker than that typically measured; this is ascribed mainly to below-average thermospheric temperatures. Auroral enhancement of NO hot bands was not observable with the available sensitivity. An approximate thermospheric temperature profile derived from the NO band shape compares reasonably with the mass spectrometer/incoherent scatter 86 model. C1 USAF,GEOPHYS LAB,BEDFORD,MA 01731. RP ADLERGOLDEN, SM (reprint author), SPECTRAL SCI INC,99 S BEDFORD ST 7,BURLINGTON,MA 01803, USA. NR 26 TC 8 Z9 9 U1 3 U2 3 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES JI J. Geophys. Res-Space Phys. PD JUL 1 PY 1991 VL 96 IS A7 BP 11319 EP 11329 DI 10.1029/91JA00656 PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA FW171 UT WOS:A1991FW17100029 ER PT J AU WURTZ, LD HANINGTON, KR AF WURTZ, LD HANINGTON, KR TI A 2ND-STAGE FLEXOR TENDON RECONSTRUCTION AFTER 18 YEARS SO JOURNAL OF HAND SURGERY-AMERICAN VOLUME LA English DT Article AB A case of successful staged tendon reconstruction for treatment of a zone II flexor tendon injury with a delay of 18 years between Hunter rod placement and secondary tendon grafting is presented. In this case, the prolonged interval was not detrimental to a successful outcome. RP WURTZ, LD (reprint author), WILFORD HALL USAF MED CTR,DEPT ORTHOPAED SURG,LACKLAND AFB,TX 78236, USA. NR 0 TC 3 Z9 3 U1 0 U2 0 PU CHURCHILL LIVINGSTONE INC MEDICAL PUBLISHERS PI NEW YORK PA 650 AVENUE OF THE AMERICAS, NEW YORK, NY 10011 SN 0363-5023 J9 J HAND SURG-AM JI J. Hand Surg.-Am. Vol. PD JUL PY 1991 VL 16A IS 4 BP 711 EP 713 DI 10.1016/0363-5023(91)90199-L PG 3 WC Orthopedics; Surgery SC Orthopedics; Surgery GA FW765 UT WOS:A1991FW76500024 PM 1880371 ER PT J AU BLATT, SP LUCEY, DR DEHOFF, D ZELLMER, RB AF BLATT, SP LUCEY, DR DEHOFF, D ZELLMER, RB TI RHINOCEREBRAL ZYGOMYCOSIS IN A PATIENT WITH AIDS SO JOURNAL OF INFECTIOUS DISEASES LA English DT Letter ID MUCORMYCOSIS; ABUSE C1 WILFORD HALL USAF MED CTR,DEPT PATHOL,LACKLAND AFB,TX 78236. RP BLATT, SP (reprint author), WILFORD HALL USAF MED CTR,SGHMMI,DEPT MED,INFECT DIS SERV,LACKLAND AFB,TX 78236, USA. NR 10 TC 48 Z9 48 U1 0 U2 0 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0022-1899 J9 J INFECT DIS JI J. Infect. Dis. PD JUL PY 1991 VL 164 IS 1 BP 215 EP 216 PG 2 WC Immunology; Infectious Diseases; Microbiology SC Immunology; Infectious Diseases; Microbiology GA FT630 UT WOS:A1991FT63000039 PM 2056212 ER PT J AU CLOUTIER, JR WILSON, RF AF CLOUTIER, JR WILSON, RF TI PERIODICALLY PRECONDITIONED CONJUGATE GRADIENT-RESTORATION ALGORITHM SO JOURNAL OF OPTIMIZATION THEORY AND APPLICATIONS LA English DT Article DE CONJUGATE GRADIENT-RESTORATION ALGORITHM; NONLINEAR MATHEMATICAL PROGRAMMING; PERIODIC PRECONDITIONING; OPTIMAL (COMPLETE) PRECONDITIONING; POSITIVE-DEFINITE REFLECTION OF HESSIAN AB In this paper, the problem of minimizing a nonlinear function f(x) subject to a nonlinear constraint phi(x) = 0 is considered, where f is a scalar, x is an n-vector, and phi is a q-vector, with q < n. A conjugate gradient-restoration algorithm similar to those developed by Miele et al. (Refs. 1 and 2) is employed. This particular algorithm consists of a sequence of conjugate gradient-restoration cycles. The conjugate gradient portion of each cycle is based upon a conjugate gradient algorithm that is derived for the special case of a quadratic function subject to linear constraints. This portion of the cycle involves a single step and is designed to decrease the value of the function while satisfying the constraints to first order. The restoration portion of each cycle involves one or more iterations and is designed to restore the norm of the constraint function to within a predetermined tolerance about zero. The conjugate gradient-restoration sequence is reinitialized with a simple gradient step every n-q or less cycles. At the beginning of each simple gradient step, a positive-definite preconditioning matrix is used to accelerate the convergence of the algorithm. The preconditioner chosen, H+, is the positive-definite reflection of the Hessian matrix H. The matrix H+ is defined herein to be a matrix whose eigenvectors are identical to those of the Hessian and whose eigenvalues are the moduli of the latter's eigenvalues. A singular-value decomposition is used to efficiently construct this matrix. The selection of the matrix H+ as the preconditioner is motivated by the fact that gradient algorithms exhibit excellent convergence characteristics on quadratic problems whose Hessians have small condition numbers. To this end, the transforming operator H+1/2 produces a transformed Hessian with a condition number of one. A higher-order example, which has resulted from a new eigenstructure assignment formulation (Ref. 3), is used to illustrate the rapidity of convergence of the algorithm, along with two simpler examples. RP CLOUTIER, JR (reprint author), USAF,ARMAMENT DIRECTORATE,GUIDANCE & CONTROL BRANCH,EGLIN AFB,FL 32542, USA. NR 20 TC 3 Z9 3 U1 1 U2 1 PU PLENUM PUBL CORP PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 SN 0022-3239 J9 J OPTIMIZ THEORY APP JI J. Optim. Theory Appl. PD JUL PY 1991 VL 70 IS 1 BP 79 EP 95 DI 10.1007/BF00940505 PG 17 WC Operations Research & Management Science; Mathematics, Applied SC Operations Research & Management Science; Mathematics GA FY946 UT WOS:A1991FY94600004 ER PT J AU LIU, CT AF LIU, CT TI NUMERICAL MODELING OF CRACK-DEFECT INTERACTION SO JOURNAL OF PROPULSION AND POWER LA English DT Article; Proceedings Paper CT 25TH JOINT PROPULSION CONF CY JUL 10-12, 1989 CL MONTEREY, CA SP AMER INST AERONAUT & ASTRONAUT, AMER SOC MECH ENGINEERS, SOC AUTOMOT ENGINEERS, AMER SOC ENGN EDUC AB An elastic analysis of the interaction between a main crack and defects was conducted using finite element methods. In the analysis, two different types of defects, voids, and damage were considered. The effects of the size, the location, and the number of voids, and, also, the intensity of damage on the Mode I stress intensity factor and the stress distribution near the crack tip region, were discussed. RP LIU, CT (reprint author), USAF,SERV COMMAND,ASTRONAUT LAB,EDWARDS AFB,CA 93523, USA. NR 4 TC 3 Z9 3 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0748-4658 J9 J PROPUL POWER JI J. Propul. Power PD JUL-AUG PY 1991 VL 7 IS 4 BP 526 EP 530 DI 10.2514/3.23358 PG 5 WC Engineering, Aerospace SC Engineering GA FY513 UT WOS:A1991FY51300010 ER PT J AU MATIS, BA CARLSON, T COCHRAN, M PHILLIPS, RW AF MATIS, BA CARLSON, T COCHRAN, M PHILLIPS, RW TI HOW FINISHING AFFECTS GLASS IONOMERS - RESULTS OF A 5-YEAR EVALUATION SO JOURNAL OF THE AMERICAN DENTAL ASSOCIATION LA English DT Article ID CLINICAL-EVALUATION; DENTIN; CEMENT; RESTORATION; ENAMEL AB At least four cervical erosion/abrasion lesions were restored with glass ionomer materials in 30 patients. Some restorations were finished in 15 minutes, and some were finished 24 hours after placement. No significant differences were found after five years. C1 USAF,WASHINGTON,DC 20330. WIESBADEN REG MED CTR,DENT SERV,WIESBADEN,GERMANY. NR 16 TC 12 Z9 12 U1 0 U2 0 PU AMER DENTAL ASSN PI CHICAGO PA 211 E CHICAGO AVE, CHICAGO, IL 60611 SN 0002-8177 J9 J AM DENT ASSOC JI J. Am. Dent. Assoc. PD JUL PY 1991 VL 122 IS 8 BP 43 EP 46 PG 4 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA FW383 UT WOS:A1991FW38300007 PM 1861011 ER PT J AU OESTERLE, LJ WOOD, LW AF OESTERLE, LJ WOOD, LW TI RAISING THE ROOT - A LOOK AT ORTHODONTIC EXTRUSION SO JOURNAL OF THE AMERICAN DENTAL ASSOCIATION LA English DT Article ID FORCED ERUPTION; NONRESTORABLE TEETH AB A simple technique using bonded wires to establish anchorage and an attachment to a tooth requires a minimum of special materials or advanced skills in orthodontics. The bonded wire stabilizes the anchor unit and avoids any adverse tooth movement. RP OESTERLE, LJ (reprint author), WILFORD HALL USAF MED CTR,DEPT ORTHODONT,LACKLAND AFB,TX 78236, USA. NR 17 TC 10 Z9 12 U1 0 U2 1 PU AMER DENTAL ASSN PI CHICAGO PA 211 E CHICAGO AVE, CHICAGO, IL 60611 SN 0002-8177 J9 J AM DENT ASSOC JI J. Am. Dent. Assoc. PD JUL PY 1991 VL 122 IS 8 BP 193 EP 198 PG 6 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA FW383 UT WOS:A1991FW38300012 PM 1861008 ER PT J AU Seward, WA Jumper, EJ AF Seward, W. A. Jumper, E. J. TI Model for Oxygen Recombination on Silicon-Dioxide Surfaces SO JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER LA English DT Article AB This paper addresses the problem of modeling the catalytic recombination of oxygen on silicon dioxide, the principal material making up the Space Shuttle thermal protection tiles. A new mechanism involving the surface oxygen of the silicon-dioxide matrix itself is proposed. The detailed rate equations describing the proposed mechanism are written and solved at steady state. The predicted rates are shown to match catalytic data specifically collected for the silicon-dioxide/oxygen system. C1 [Seward, W. A.] USAF, Inst Technol, Wright Patterson AFB, OH 45433 USA. [Jumper, E. J.] Univ Notre Dame, Dept Aerosp & Mech Engn, Notre Dame, IN 46556 USA. RI Jumper, Eric/A-9856-2013 NR 32 TC 30 Z9 31 U1 0 U2 9 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA SN 0887-8722 J9 J THERMOPHYS HEAT TR JI J. Thermophys. Heat Transf. PD JUL-SEP PY 1991 VL 5 IS 3 BP 284 EP 291 DI 10.2514/3.262 PG 8 WC Thermodynamics; Engineering, Mechanical SC Thermodynamics; Engineering GA V24ZW UT WOS:000208449300004 ER PT J AU Bowman, WJ AF Bowman, W. Jerry TI Numerical Modeling of Heat-Pipe Transients SO JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER LA English DT Article AB This paper describes work done to increase the understanding of numerical modeling of heat-pipe transients. The most significant contribution discussed in the paper is a method of reducing the amount of computer time required to obtain a numerical solution. It was found that time-accurate results could be obtained even if the heat-pipe's wall model and the heat-pipe's vapor model use different time steps to march through time. This leads to a reduction in computer time requirements by as much as a factor of 500. A second method of decreasing computer time requirements is also discussed. The method involves using an implicit solution algorithm instead of the explicit method used for most of this work. The implicit method was at least 10 times faster than the explicit method. Also in the paper, two different methods for modeling the heat-pipe wall transient are discussed and compared. Both methods gave comparable results; however, one method required less computer time than the other. C1 USAF Acad, HQ USAFA DFAN, Colorado Springs, CO 80840 USA. RP Bowman, WJ (reprint author), USAF Acad, HQ USAFA DFAN, Colorado Springs, CO 80840 USA. NR 11 TC 7 Z9 7 U1 0 U2 3 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA SN 0887-8722 J9 J THERMOPHYS HEAT TR JI J. Thermophys. Heat Transf. PD JUL-SEP PY 1991 VL 5 IS 3 BP 374 EP 379 DI 10.2514/3.273 PG 6 WC Thermodynamics; Engineering, Mechanical SC Thermodynamics; Engineering GA V24ZW UT WOS:000208449300015 ER PT J AU JUMPER, GW ELROD, WC RIVIR, RB AF JUMPER, GW ELROD, WC RIVIR, RB TI FILM COOLING EFFECTIVENESS IN HIGH-TURBULENCE FLOW SO JOURNAL OF TURBOMACHINERY-TRANSACTIONS OF THE ASME LA English DT Article ID PLATE AB The mechanisms influencing film cooling effectiveness on a flat plate in high free-stream turbulence using a single row of 30 deg slant-hole injectors are examined. The primary area of focus is the area within 40 diameters downstream of injection. Of interest are blowing ratios for optimum film cooling effectiveness within 10 diameters downstream of injection, and the decay of film cooling effectiveness down the plate. Film cooling flow Reynolds numbers, Re, from 24,700 to 86,600 and free-stream turbulence intensities from 14 to 17 percent were examined. Changes in Reynolds number of free-stream turbulence broadened and increased the blowing ratios for optimum film cooling effectiveness. In comparison with tests conducted at 0.5 percent free-stream turbulence, higher free-stream turbulence causes a faster decay in film cooling effectiveness, or a reduction in the effective cooling length, and a reduction of the level of cooling effectiveness at the higher Reynolds numbers. C1 USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433. AERO PROPULS & POWER LAB,WRIGHT PATTERSON AFB,OH 45433. NR 12 TC 24 Z9 24 U1 0 U2 0 PU ASME-AMER SOC MECHANICAL ENG PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 0889-504X J9 J TURBOMACH JI J. Turbomach.-Trans. ASME PD JUL PY 1991 VL 113 IS 3 BP 479 EP 483 DI 10.1115/1.2927899 PG 5 WC Engineering, Mechanical SC Engineering GA HP740 UT WOS:A1991HP74000021 ER PT J AU PHILLIPS, TH RITCHEY, ML DUNN, CD SAROSDY, MF AF PHILLIPS, TH RITCHEY, ML DUNN, CD SAROSDY, MF TI COMPLICATIONS OF THE HEITZ-BOYER URINARY-DIVERSION - CASE-REPORT OF LATE DEVELOPMENT OF MALIGNANCY SO JOURNAL OF UROLOGY LA English DT Article DE BLADDER EXSTROPHY; URINARY DIVERSION; CARCINOMA; URINARY INCONTINENCE; URINARY TRACT INFECTIONS ID BLADDER; EXSTROPHY AB We report on 3 patients with bladder exstrophy followed for more than 15 years after having undergone Heitz-Boyer urinary diversion. One patient had adenocarcinoma at the ureterocolonic anastomoses 16 years after diversion. To our knowledge this is the first reported case of a malignancy developing after a Heitz-Boyer procedure. The other 2 patients had significant problems with urinary incontinence and recurrent urinary tract infections. Initial success with this form of urinary diversion can be followed by significant long-term complications. C1 UNIV TEXAS,HLTH SCI CTR,DEPT UROL,SAN ANTONIO,TX 78284. RP PHILLIPS, TH (reprint author), WILFORD HALL USAF MED CTR,DEPT UROL,LACKLAND AFB,TX 78236, USA. NR 16 TC 0 Z9 0 U1 0 U2 0 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0022-5347 J9 J UROLOGY JI J. Urol. PD JUL PY 1991 VL 146 IS 1 BP 159 EP 161 PG 3 WC Urology & Nephrology SC Urology & Nephrology GA FU473 UT WOS:A1991FU47300038 PM 2056579 ER PT J AU EVANS, KR STUTZ, CE TAYLOR, EN EHRET, JE AF EVANS, KR STUTZ, CE TAYLOR, EN EHRET, JE TI INCORPORATION DESORPTION RATE VARIATION AT HETEROINTERFACES IN III-V MOLECULAR-BEAM EPITAXY SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B LA English DT Article ID GROWTH; STRAIN AB Surface composition is known to influence cation and anion incorporation rates during III-V molecular-beam epitaxy (MBE). [See, for example, Van Hove and Cohen, Appl. Phys. Lett. 47, 726 (1985).] Thus, incorporation rates are expected to vary at heterointerfaces. The details of how incorporation rates vary in time during heterointerface formation are of interest because they completely determine resulting compositional profiles and/or layer thicknesses. In this study desorption mass spectrometry is used to determine the time dependence of incorporation rates during MBE growth of III-V heterostructures, with an emphasis on the heterointerface formation process. Under many conditions incorporation rates are found to vary in a nonsteplike manner, resulting in nonsteplike compositional profiles. Three different heterointerfaces are investigated: AlGaAs on GaAs, GaInAs on GaAs, and GaAsSb on GaAs. At growth temperatures for which significant Ga desorption occurs, AlGaAs on GaAs interfaces are found to be enriched in Al content relative to adjacent AlGaAs. In addition, transients are observed in the Ga desorption rate which suggest the occurrence of an Al-Ga displacement reaction. When Sb desorption is significant, GaAsSb on GaAs interfaces are found to be enriched in Sb content relative to adjacent GaAsSb. And when In desorption is significant, GaInAs on GaAs interfaces are found to be enriched in In content relative to adjacent GaInAs. The latter result is verified by x-ray and photoluminescence measurements on separately grown, narrow, single GaInAs/GaAs quantum wells. Compositional grading for each system investigated is found to occur over a distance of about two to four monolayers. These results are shown to be consistent with a model which assumes simple first order desorption behavior and which incorporates strain-dependent activation energies for desorption. RP EVANS, KR (reprint author), WRIGHT LAB,WL ELR,ELECTR TECHNOL,WRIGHT PATTERSON AFB,OH 45433, USA. NR 13 TC 22 Z9 23 U1 0 U2 8 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 1071-1023 J9 J VAC SCI TECHNOL B JI J. Vac. Sci. Technol. B PD JUL-AUG PY 1991 VL 9 IS 4 BP 2427 EP 2428 DI 10.1116/1.585715 PG 2 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Physics, Applied SC Engineering; Science & Technology - Other Topics; Physics GA GB897 UT WOS:A1991GB89700090 ER PT J AU BRADBURY, AR AF BRADBURY, AR TI COMPUTERIZED MEDICAL RECORDS - DEFINING A STANDARD WITHOUT THE COMPUTER SO MEDICAL INFORMATICS LA English DT Article DE COMPUTER; MEDICAL RECORD; STANDARD AB The inevitable computerization of medical records may be a boon or a hindrance to the practice of medicine. A comprehensive view of the project is essential for its success. Definite goals for the computerized medical record are stated to this end. An argument is presented for keeping the structure of the medical record separate from any specific requirements of technology. An elegant structure for medical records is proposed, independent of any computer system and requiring a minimum of definitions or special characters. The roles of clinical specialists (such as physicians and nurses), medical records specialists, administrators, accountants, and computer architects (hardware and software) are defined. In particular, the tasks of lexicon and template creation are defined and emphasized as urgent and ongoing challenges for specialty organizations. RP BRADBURY, AR (reprint author), USAF,HOSP ALTUS,SGHF,ALTUS AFB,OK 73523, USA. NR 0 TC 5 Z9 5 U1 0 U2 0 PU TAYLOR & FRANCIS LTD PI LONDON PA ONE GUNDPOWDER SQUARE, LONDON, ENGLAND EC4A 3DE SN 0307-7640 J9 MED INFORM JI Med. Inform. PD JUL-SEP PY 1991 VL 16 IS 3 BP 279 EP 286 PG 8 WC Computer Science, Information Systems; Computer Science, Interdisciplinary Applications; Medical Informatics SC Computer Science; Medical Informatics GA GQ092 UT WOS:A1991GQ09200004 PM 1758217 ER PT J AU PARKINSON, MD AF PARKINSON, MD TI THE EPIDEMIOLOGY OF TUBERCULOSIS IN THE UNITED-STATES-AIR-FORCE, 1987 SO MILITARY MEDICINE LA English DT Article AB In preparation for a major revision of the Air Force tuberculosis (TB) prevention and control program, we reviewed tuberculosis cases treated at Air Force hospitals and the U.S. Air Force tuberculin skin testing program for 1987. The highest rates of active TB cases and infection were observed in the Pacific overseas region. Active tuberculosis cases occurred most frequently in white male retirees and in Asian dependent females. Nineteen cases (9% of total TB cases) occurred in children under the age of 5. Only 46-60% of individuals with a positive Purified Protein Derivative-Tuberculin were placed on isoniazid (INH) chemoprophylaxis. Flying status personnel were less likely to have either active disease or TB infection than non-flying active duty members. Based upon these findings, Air Force tuberculosis prevention and control program efforts should de-emphasize screening of low risk active duty populations and stress timely reporting and case finding, compliance with therapy, and initiation of INH chemoprophylaxis in accordance with existing guidelines. Young children who are contacts of active TB cases should receive special emphasis. RP PARKINSON, MD (reprint author), USAF,SCH AEROSP MED,EPIDEMIOL DIV EKE,BROOKS AFB,TX 78235, USA. NR 0 TC 5 Z9 6 U1 0 U2 0 PU ASSN MILITARY SURG US PI BETHESDA PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 SN 0026-4075 J9 MIL MED JI Milit. Med. PD JUL PY 1991 VL 156 IS 7 BP 339 EP 343 PG 5 WC Medicine, General & Internal SC General & Internal Medicine GA FW957 UT WOS:A1991FW95700009 PM 1922843 ER PT J AU BARTH, RJ CONSTANT, RB PARKER, MW MUELLER, GL KOVACS, K THORNER, MO AF BARTH, RJ CONSTANT, RB PARKER, MW MUELLER, GL KOVACS, K THORNER, MO TI PREOPERATIVE DIAGNOSIS OF ACROMEGALY BY GROWTH HORMONE-RELEASING FACTOR RADIOIMMUNOASSAY SO MILITARY MEDICINE LA English DT Article AB Acromegaly was diagnosed in a 37-year-old woman with classical physical and biochemical findings; an enlarged sella on computed tomography suggested the presence of a pituitary macroadenoma. Radiologic evidence of a lung mass prompted radioimmunoassay of plasma growth hormone-releasing factor (7,500 pg/ml; normal < 100 pg/ml). After resection of a bronchial carcinoid, which stained positive for growth hormone-releasing factor, circulating growth hormone-releasing factor levels normalized. Subsequently, her clinical, biochemical, and radiologic evidence for acromegaly resolved. This case represents the first reported use of the human pancreatic growth hormone-releasing factor 1-40 radioimmunoassay to preoperatively diagnose this rare etiology of acromegaly. C1 WILFORD HALL USAF MED CTR,ENDOCRINE SERV,LACKLAND AFB,TX 78236. NR 0 TC 4 Z9 5 U1 0 U2 0 PU ASSN MILITARY SURG US PI BETHESDA PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 SN 0026-4075 J9 MIL MED JI Milit. Med. PD JUL PY 1991 VL 156 IS 7 BP 375 EP 378 PG 4 WC Medicine, General & Internal SC General & Internal Medicine GA FW957 UT WOS:A1991FW95700020 PM 1922854 ER PT J AU HINDERS, MK AF HINDERS, MK TI PLANE-ELASTIC-WAVE SCATTERING FROM AN ELASTIC SPHERE SO NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA B-BASIC TOPICS IN PHYSICS LA English DT Article ID RESONANCE THEORY; INCLUSIONS; FLAWS; SOLIDS AB The scattering of elastic waves from a spherical inclusion of arbitrary size in an infinitely extended elastic medium is investigated. The spherical scatterer and the exterior medium are isotropic, homogeneous, and linearly elastic, but of arbitrarily differing material parameters, with compressional and shear waves supported in both media. Exact expressions for scattered and transmitted fields caused by an incident plane compressional or shear wave of unit amplitude are calculated analytically and general expressions for extinction and scattering cross-sections are derived. In the Rayleigh-wave range for small scatterers, agreement with the approximate solution of Truell is established. In this range of wavelengths the lowest modes have cross-sections proportional to the fourth power of the wave number. RP USAF, ROME AIR DEV CTR, TARGET CHARACTERIZAT BRANCH, BEDFORD, MA 01731 USA. NR 32 TC 20 Z9 20 U1 0 U2 4 PU SOC ITALIANA FISICA PI BOLOGNA PA VIA SARAGOZZA, 12, I-40123 BOLOGNA, ITALY SN 2037-4895 EI 1594-9982 J9 NUOVO CIM B JI Nouvo Cimento Soc. Ital. Fis. B-Basic Top. Phys. PD JUL PY 1991 VL 106 IS 7 BP 799 EP 818 DI 10.1007/BF02722548 PG 20 WC Physics, Multidisciplinary SC Physics GA FZ196 UT WOS:A1991FZ19600012 ER PT J AU CULLITON, CR AF CULLITON, CR TI OLIGODONTIA AND TRANSPOSITION SO ORAL SURGERY ORAL MEDICINE ORAL PATHOLOGY ORAL RADIOLOGY AND ENDODONTICS LA English DT Letter RP CULLITON, CR (reprint author), WILFORD HALL USAF MED CTR,SGDB,LACKLAND AFB,TX 78236, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 1079-2104 J9 ORAL SURG ORAL MED O JI Oral Surg. Oral Med. Oral Pathol. Oral Radiol. Endod. PD JUL PY 1991 VL 72 IS 1 BP 137 EP 137 DI 10.1016/0030-4220(91)90209-U PG 1 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA FW556 UT WOS:A1991FW55600028 PM 1891236 ER PT J AU PREVIC, FH AF PREVIC, FH TI A GENERAL-THEORY CONCERNING THE PRENATAL ORIGINS OF CEREBRAL LATERALIZATION IN HUMANS SO PSYCHOLOGICAL REVIEW LA English DT Review ID CALORIC LABYRINTHINE STIMULATION; ADOLESCENT IDIOPATHIC SCOLIOSIS; SPECIES-SPECIFIC VOCALIZATIONS; INNERVATING OTOLITH ORGANS; RIGHT HEMISPHERES ROLE; DEVELOPMENTAL DYSLEXIA; PARKINSONS-DISEASE; VESTIBULAR STIMULATION; HAND PREFERENCE; LEARNING-DISABILITIES AB The origins of cerebral lateralization in humans are traced to the asymmetric prenatal development of the ear and labyrinth. Aural lateralization is hypothesized to result from an asymmetry in craniofacial development, whereas vestibular dominance is traced to the position of the fetus during the final trimester. A right-ear sensitivity advantage may contribute to a left-hemispheric advantage in speech perception and language functions, whereas left-otolithic dominance may independently promote right-sided motoric dominance and a right-hemispheric superiority in most visuospatial functions. The emergence of handedness is linked to the assumption of an upright posture in the early hominids, whereas the failure to develop clear vestibular asymmetry may underlie the poor motoric lateralization found in several neurodevelopmental disorders. RP PREVIC, FH (reprint author), ARMSTRONG LAB, DIV CREW TECHNOL, BROOKS AFB, TX 78235 USA. NR 471 TC 239 Z9 246 U1 6 U2 25 PU AMER PSYCHOLOGICAL ASSOC PI WASHINGTON PA 750 FIRST ST NE, WASHINGTON, DC 20002-4242 USA SN 0033-295X EI 1939-1471 J9 PSYCHOL REV JI Psychol. Rev. PD JUL PY 1991 VL 98 IS 3 BP 299 EP 334 PG 36 WC Psychology; Psychology, Multidisciplinary SC Psychology GA FX733 UT WOS:A1991FX73300001 PM 1891521 ER PT J AU BAYSINGER, SM AF BAYSINGER, SM TI THE UNITED-STATES AIR-FORCE IS CHANGING THE WAY IT DOES BUSINESS SO QUALITY PROGRESS LA English DT Article RP BAYSINGER, SM (reprint author), USAF,405TH TACTICAL TRAINING WING,LUKE AFD,AZ 85309, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC QUALITY CONTROL-ASQC PI MILWAUKEE PA ASQC MEMBERSHIP MANAGER 611 E. WISCONSIN AVENUE, MILWAUKEE, WI 53202 SN 0033-524X J9 QUAL PROG JI Qual. Prog. PD JUL PY 1991 VL 24 IS 7 BP 36 EP 38 PG 3 WC Engineering, Multidisciplinary; Engineering, Industrial; Management; Operations Research & Management Science SC Engineering; Business & Economics; Operations Research & Management Science GA FV531 UT WOS:A1991FV53100011 ER PT J AU OSTERGAARD, JC WEITZEN, JA KOSSEY, PA BAILEY, AD BENCH, PM LI, SW KATAN, JR CORIATY, AJ RASMUSSEN, JE AF OSTERGAARD, JC WEITZEN, JA KOSSEY, PA BAILEY, AD BENCH, PM LI, SW KATAN, JR CORIATY, AJ RASMUSSEN, JE TI EFFECTS OF ABSORPTION ON HIGH-LATITUDE METEOR SCATTER COMMUNICATION-SYSTEMS SO RADIO SCIENCE LA English DT Article AB Data acquired with the Geophysics Laboratory's high-latitude meteor scatter test-bed between Sondrestrom Air Base (AB) and Thule AB, Greenland, during the solar disturbances of March and August 1989 are presented. These disturbances provided a unique opportunity to observe a number of naturally occurring disturbance effects on meteor scatter links operated in the frequency range (35 to 147 MHz) covered by the test-bed. The disturbances range from signal absorption to system noise variations. The properties of ionospheric absorption in general are discussed and illustrated with computations using electron density profiles from the September 1978 solar proton event (SPE). It has been found that accurate measurements of high levels of ionospheric absorption with riometers pose special problems. These problems are identified and discussed. The data acquired during the March and August 1989 solar disturbances are then related to the zenith absorption measured at Thule, and the influence of absorption as well as system noise variations are discussed. The two events presented are very different. The August event was dominated by ionospheric absorption which affected meteor arrival rates and duty cycles primarily at the lower frequencies (35 and 45 MHz), although some effects could also be seen at the higher frequencies (65 to 147 MHz). The March event combined weak ionospheric absorption with large solar noise bursts. The effects of this event on the test-bed were dominated by increased solar noise at all frequencies. The relative influence of solar noise and ionospheric absorption during SPE events is discussed along with speculation as to the validity of frequency dependence conclusions based on testing of the JANET system. C1 USAF,GEOPHYS LAB,LID,BEDFORD,MA 01731. USN,CTR UNDERWATER SYST,NEW LONDON,CT 06320. RP OSTERGAARD, JC (reprint author), CATHOLIC UNIV LOUVAIN CLIN,CTR ATMOSPHER RES,450 AIKEN ST,B-1200 BRUSSELS,BELGIUM. NR 21 TC 2 Z9 2 U1 0 U2 0 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0048-6604 J9 RADIO SCI JI Radio Sci. PD JUL-AUG PY 1991 VL 26 IS 4 BP 931 EP 942 DI 10.1029/91RS00584 PG 12 WC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology & Atmospheric Sciences; Remote Sensing; Telecommunications SC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology & Atmospheric Sciences; Remote Sensing; Telecommunications GA FZ016 UT WOS:A1991FZ01600013 ER PT J AU BROWN, LD DANIELL, RE FOX, MW KLOBUCHAR, JA DOHERTY, PH AF BROWN, LD DANIELL, RE FOX, MW KLOBUCHAR, JA DOHERTY, PH TI EVALUATION OF 6 IONOSPHERIC MODELS AS PREDICTORS OF TOTAL ELECTRON-CONTENT SO RADIO SCIENCE LA English DT Article AB We have gathered total electron content (TEC) data from a range of mid-latitudes and low latitudes and longitudes for a wide range of solar activity. This data was used to evaluate the performance of six publicly available ionospheric models as predictors of total electron content. TEC is important for correcting modern DoD space systems, which propagate radio waves from the earth to satellites, for time delay effects of the ionosphere. The TEC data were obtained from polarimeter receivers located in North America, the Pacific, and the East coast of Asia. The ionospheric models evaluated are (1) the International Reference Ionosphere, (2) the Bent model, (3) the Ionospheric Conductivity and Electron Density model, (4) the Penn State model, (5) the Fully Analytic Ionospheric Model, and (6) a hybrid model consisting of the Union Radio Scientifique Internationale 88 (URSI-88) coefficients coupled with the Damen-Hartranft profile model. We will present extensive comparisons between monthly median TEC and model TEC obtained by integrating electron density profiles produced by the six models. These comparisons demonstrate that although most of the models do very well at representing f(o)F2, none of them do very well with TEC, probably because of inaccurate representation of the topside profile. We suggest that one approach to obtaining better representations of TEC is the use of f(o)F2 from the CCIR or URSI-88 coefficients coupled with a good climatological slab thickness model. C1 BOSTON COLL,INST SPACE RES,CHESTNUT HILL,MA 02167. BOSTON UNIV,CTR SPACE PHYS,BOSTON,MA 02215. USAF,GEOPHYS LAB,DIV IONOSPHER PHYS,BEDFORD,MA 01731. RP BROWN, LD (reprint author), COMPUTAT PHYS INC,385 ELLIOT ST,NEWTON,MA 02164, USA. NR 9 TC 20 Z9 20 U1 0 U2 0 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0048-6604 J9 RADIO SCI JI Radio Sci. PD JUL-AUG PY 1991 VL 26 IS 4 BP 1007 EP 1015 DI 10.1029/91RS00513 PG 9 WC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology & Atmospheric Sciences; Remote Sensing; Telecommunications SC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology & Atmospheric Sciences; Remote Sensing; Telecommunications GA FZ016 UT WOS:A1991FZ01600020 ER PT J AU KLOBUCHAR, JA ANDERSON, DN DOHERTY, PH AF KLOBUCHAR, JA ANDERSON, DN DOHERTY, PH TI MODEL STUDIES OF THE LATITUDINAL EXTENT OF THE EQUATORIAL ANOMALY DURING EQUINOCTIAL CONDITIONS SO RADIO SCIENCE LA English DT Article ID ELECTRIC-FIELD; REGION; AMERICAN; MINIMUM AB The latitudinal extent of the equatorial anomaly has been studied for equinoctial conditions using a theoretical model of the ionosphere which incorporates measured values of vertical E x B drift at the Earth's magnetic equator. Realistic values of neutral winds are also included. The equatorial anomaly region, typically between +/- 20-degrees magnetic latitude, is that part of the world where the highest values of electron density and total electron content (TEC) normally occur and hence is very important to high-frequency propagation and to transionospheric propagation effects. During the daytime, upward E x B drift at the magnetic equator drives the ionization across field lines to higher latitudes, causing crests in ionization to occur at approximately +/- 15-degrees dip latitude. The E x B drift mechanism is explained in detail by Hanson and Moffett (1966). The latitude range over which the anomaly makes a significant difference in values of f(o)F2 and TEC is calculated as a percent departure from the case with no equatorial electric field. Results from the model studies with different values of realistic electric fields show that the effects of the anomaly can be more highly variable and widespread in latitude and local time than is generally assumed. C1 BOSTON UNIV,INST SPACE RES,BOSTON,MA 02215. RP KLOBUCHAR, JA (reprint author), USAF,GEOPHYS LAB,DIV IONOSPHER PHYS,BEDFORD,MA 01731, USA. NR 22 TC 40 Z9 40 U1 0 U2 1 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0048-6604 J9 RADIO SCI JI Radio Sci. PD JUL-AUG PY 1991 VL 26 IS 4 BP 1025 EP 1047 DI 10.1029/91RS00799 PG 23 WC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology & Atmospheric Sciences; Remote Sensing; Telecommunications SC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology & Atmospheric Sciences; Remote Sensing; Telecommunications GA FZ016 UT WOS:A1991FZ01600022 ER PT J AU BASU, S BASU, S COSTA, E BRYANT, C VALLADARES, CE LIVINGSTON, RC AF BASU, S BASU, S COSTA, E BRYANT, C VALLADARES, CE LIVINGSTON, RC TI INTERPLANETARY MAGNETIC-FIELD CONTROL OF DRIFTS AND ANISOTROPY OF HIGH-LATITUDE IRREGULARITIES SO RADIO SCIENCE LA English DT Article ID F-REGION IRREGULARITIES; POLAR-CAP; PLASMA STRUCTURE; AURORAL OVAL; SCINTILLATION; LAYER; VELOCITY; MORPHOLOGY; CONVECTION; DYNAMICS AB Recently, much attention has been focused on the control exerted by the north-south component of the interplanetary magnetic field (IMF) on the nature of large-scale plasma structures in the polar cap ionosphere. In this paper we investigate whether the above IMF control also extends to the small-scale irregularities of plasma density associated with the large-scale structures. For this purpose, we have performed spaced-receiver scintillation measurements at Thule and Sondrestrom, Greenland, using the 250-MHz transmissions from quasi-geostationary polar beacon satellites. Under IMF B(z) northward conditions, moderate levels of amplitude (S4 < 0.6) and phase scintillations are observed with highly variable decorrelation times. Spaced-receiver drifts under this situation show dramatic reversals of the true drift of the diffraction pattern from antisunward to sunward with moderate values of the axial ratio ranging between 4 and 12. For southward B(z) we detect, in the central polar cap, a series of large magnitude scintillation (S4 approximately 1) structures drifting at speeds of the order of 500 m s-1 in the antisunward direction indicating the passage of large-scale ionization structures in the F region. In these cases the apparent drift speed of the diffraction pattern can only be determined as the pattern on ground is highly anisotropic (axial ratios 15 to 40) which makes it difficult to determine the true drift velocity. However, with suitable orientation of our antenna baseline we find that the apparent drift gives a fair estimate of the actual velocity. We also demonstrate that when these irregularities associated with the ionization patches in the F region transit across the polar cap and are observed at Sondrestrom, in conjunction with underlying E region ionization caused by auroral particle precipitation (as sensed by simultaneous incoherent scatter radar measurements of densities and temperatures), the irregularity anisotropy is much reduced. This reduction of anisotropy is possibly a result of increased cross-field diffusion due to coupling with the E region having enhanced density. The true drift of the diffraction pattern measured at Sondrestrom on one evening agrees remarkably well with the simultaneous incoherent scatter radar measurements of F region plasma drifts, both sets of drifts showing equatorward and eastward motion varying between 0.5 and 1 km s-1. C1 USAF,PHILLIPS LAB AFSC GP,DIV IONOSPHER PHYS,BEDFORD,MA 01731. PONTIFICIA UNIV CATOLICA RIO DE JANEIRO,CTR ESTUDOS TELECOMMUN,BR-20000 RIO DE JANEIRO,BRAZIL. SRI INT,MENLO PK,CA 94025. RP BASU, S (reprint author), BOSTON COLL,INST SPACE RES,NEWTON,MA 02159, USA. NR 41 TC 16 Z9 16 U1 0 U2 1 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0048-6604 J9 RADIO SCI JI Radio Sci. PD JUL-AUG PY 1991 VL 26 IS 4 BP 1079 EP 1103 DI 10.1029/91RS00586 PG 25 WC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology & Atmospheric Sciences; Remote Sensing; Telecommunications SC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology & Atmospheric Sciences; Remote Sensing; Telecommunications GA FZ016 UT WOS:A1991FZ01600026 ER PT J AU MCQUAY, PA DIMIDUK, DM SEMIATIN, SL AF MCQUAY, PA DIMIDUK, DM SEMIATIN, SL TI THE DECOMPOSITION OF ALPHA PHASE DURING CONTINUOUS COOLING AND ISOTHERMAL TRANSFORMATION IN GAMMA TITANIUM ALUMINIDE SO SCRIPTA METALLURGICA ET MATERIALIA LA English DT Article C1 BATTELLE MEM INST,COLUMBUS,OH 43201. RP MCQUAY, PA (reprint author), WRIGHT LAB,MAT DIRECTORATE,MLLM,WRIGHT PATTERSON AFB,OH 45433, USA. RI SEMIATIN, SHELDON/E-7264-2017 NR 17 TC 55 Z9 56 U1 0 U2 7 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0956-716X J9 SCRIPTA METALL MATER JI Scr. Metall. Materialia PD JUL PY 1991 VL 25 IS 7 BP 1689 EP 1694 DI 10.1016/0956-716X(91)90476-H PG 6 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA FU814 UT WOS:A1991FU81400037 ER PT J AU CULL, DL LALLY, KP MURPHY, KD AF CULL, DL LALLY, KP MURPHY, KD TI COMPATIBILITY OF PACKED ERYTHROCYTES AND RINGERS LACTATE SOLUTION SO SURGERY GYNECOLOGY & OBSTETRICS LA English DT Article ID INTRAVENOUS SOLUTIONS; BLOOD; CELLS AB Packed erythrocytes are frequently reconstituted with crystalloid during rapid infusion. Dilution of whole blood with calcium containing solutions, such as Ringer's lactate has been cautioned against, citing possible clot formation because of chelation of the citrate anticoagulant. We studied the compatibility of Ringer's lactate solution and citrate phosphate dextrose (CPD)-preserved packed erythrocytes to evaluate the safety of using Ringer's lactate solution as a diluent in the emergency setting. Aliquots of CPD-preserved packed erythrocytes were diluted with either Ringer's lactate or normal saline solutions in ratios between 5:1 to 1:20 (packed erythrocyte to crystalloid), incubated at room temperature or 37 degrees centigrade and examined for clot formation at intervals up to two hours. Although clotting occurred at dilutions of 1:1 (packed erythrocytes to Ringer's lactate solution) and beyond, no clot formation occurred in the clinically relevant dilutions between 5:1 and 2:1. Thirty-two additional units of CPD-preserved packed erythrocytes were diluted to hematocrit values of 35, 45, 55 or 65 per cent and passed through a 170 micron filter. Flow rates of packed erythrocytes diluted with Ringer's lactate and normal saline solutions were compared. There was no difference in flow rates between packed erythrocytes diluted with Ringer's lactate compared with normal saline solutions. Ringer's lactate solution can be safely used as a packed erythrocyte diluent in patients requiring rapid blood transfusions. C1 WILFORD HALL USAF MED CTR,SGHSG,DEPT SURG,LACKLAND AFB,TX 78236. WILFORD HALL USAF MED CTR,DEPT PATHOL,LACKLAND AFB,TX 78236. NR 15 TC 6 Z9 6 U1 0 U2 1 PU FRANKLIN H MARTIN FOUNDATION PI CHICAGO PA 55 E ERIE ST, CHICAGO, IL 60611 SN 0039-6087 J9 SURG GYNECOL OBSTET JI Surg. Gynecol. Obstet. PD JUL PY 1991 VL 173 IS 1 BP 9 EP 12 PG 4 WC Obstetrics & Gynecology; Surgery SC Obstetrics & Gynecology; Surgery GA FU271 UT WOS:A1991FU27100003 PM 1866680 ER PT J AU STUFF, JR AF STUFF, JR TI SEPARATION OF CATIONS IN BUFFERED 1-METHYL-3-ETHYLIMIDAZOLIUM CHLORIDE ALUMINUM-CHLORIDE IONIC LIQUIDS BY ION CHROMATOGRAPHY SO JOURNAL OF CHROMATOGRAPHY LA English DT Note ID CHLOROALUMINATE MOLTEN-SALTS; SPECTROSCOPY AB Ion chromatography was used to separate sodium and 1-methyl-3-ethylimidazolium cations in the buffered 1-methyl-3-ethylimidazolium chloride-aluminum chloride room-temperature molten salt system. The calibration curves for the two species were linear over three decades and the accuracy of the method was +/- 2.8% relative error. RP STUFF, JR (reprint author), USAF ACAD,FRANK J SEILER RES LAB,COLORADO SPRINGS,CO 80840, USA. NR 8 TC 14 Z9 14 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0021-9673 J9 J CHROMATOGR PD JUN 28 PY 1991 VL 547 IS 1-2 BP 484 EP 487 DI 10.1016/S0021-9673(01)88677-5 PG 4 WC Chemistry, Analytical SC Chemistry GA FV963 UT WOS:A1991FV96300054 ER PT J AU MOUNTS, JS BELK, DM MILTON, JE AF MOUNTS, JS BELK, DM MILTON, JE TI VORTICAL FLOW SOLUTIONS USING A TIME-LAGGED, THIN-LAYER, NAVIER-STOKES ALGORITHM SO AIAA JOURNAL LA English DT Article ID DIFFERENCE AB A PROVEN inviscid algorithm (Program EAGLE - Flow Solver) 1-3 has been modified to use the flux-difference split scheme of Roe 4 to solve the time-lagged, thin-layer approximation to the Navier-Stokes equations. 5,6 Calculations are presented evaluating the ability of the time-lagged, thin-layer Navier-Stokes algorithm to obtain transonic solutions for lifting bodies at incidence angles sufficient for the flow to be dominated by large-scale free vortices in the leeside flowfield. C1 USAF,ARMAMENT LAB,AERODYNAM BRANCH,EGLIN AFB,FL 32542. UNIV FLORIDA,CTR GRAD ENGN,EGLIN AFB,FL. RP MOUNTS, JS (reprint author), UNITED TECHNOL RES CTR,COMPUTAT SCI,E HARTFORD,CT 06108, USA. NR 10 TC 0 Z9 0 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0001-1452 J9 AIAA J JI AIAA J. PD JUN PY 1991 VL 29 IS 6 BP 876 EP 877 DI 10.2514/3.10672 PG 2 WC Engineering, Aerospace SC Engineering GA FU410 UT WOS:A1991FU41000004 ER PT J AU RAO, SS PAN, TS AF RAO, SS PAN, TS TI OPTIMAL PLACEMENT OF ACTUATORS IN ACTIVELY CONTROLLED STRUCTURES USING GENETIC ALGORITHMS SO AIAA JOURNAL LA English DT Article AB THE discrete optimal actuator location selection problem Tin actively controlled structures is cast in the framework of a zero-one optimization problem. A genetic algorithmic approach is developed to solve this zero-one optimization problem. To obtain successive generations that yield the solution corresponding to the maximum fitness value, this approach involves three basic operations: reproduction, crossover, and mutation. It can produce a global-optimal solution or a near-global-optimal solution if a sufficient number of generations are considered. Simplicity and parallel processing properties are the two attractive features of genetic algorithms. An example is presented to demonstrate the approach. C1 USAF,WRIGHT AERONAUT LABS,WRIGHT PATTERSON AFB,OH 45431. RP RAO, SS (reprint author), PURDUE UNIV,SCH MECH ENGN,W LAFAYETTE,IN 47907, USA. NR 2 TC 97 Z9 112 U1 0 U2 6 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0001-1452 J9 AIAA J JI AIAA J. PD JUN PY 1991 VL 29 IS 6 BP 942 EP 943 DI 10.2514/3.10683 PG 2 WC Engineering, Aerospace SC Engineering GA FU410 UT WOS:A1991FU41000015 ER PT J AU SLAGLE, DA MARTIN, TA AF SLAGLE, DA MARTIN, TA TI TRICHOTILLOMANIA SO AMERICAN FAMILY PHYSICIAN LA English DT Article AB Trichotillomania is a behavioral disorder characterized by the recurrent failure to resist removing one's own hair from the scalp, eyelashes, eyebrows, beard, axillary areas or pubic area. Patients report an increasing sense of tension immediately before the impulse to pull out their hair and a sense of gratification or relief during the act. On initial presentation, patients may deny that their hair loss is due to such behavior. The diagnosis of trichotillomania is excluded when there is a preexisting skin disorder or when the behavior results from underlying psychosis. Behavior modification training, psychotherapy, hypnosis and family counseling are common treatment approaches. Antidepressant medications such as amitriptyline and clomipramine are effective when depression or an obsessive-compulsive disorder coexists. RP SLAGLE, DA (reprint author), USAF,HOSP NELLIS,MENTAL HLTH SERV,NELLIS AIR FORCE BASE,NV, USA. NR 0 TC 7 Z9 7 U1 1 U2 1 PU AMER ACAD FAMILY PHYSICIANS PI KANSAS CITY PA 8880 WARD PARKWAY, KANSAS CITY, MO 64114-2797 SN 0002-838X J9 AM FAM PHYSICIAN JI Am. Fam. Physician PD JUN PY 1991 VL 43 IS 6 BP 2019 EP 2024 PG 6 WC Primary Health Care; Medicine, General & Internal SC General & Internal Medicine GA FP894 UT WOS:A1991FP89400013 PM 2042545 ER PT J AU SATROM, KD SINCLAIR, PM WOLFORD, LM AF SATROM, KD SINCLAIR, PM WOLFORD, LM TI THE STABILITY OF DOUBLE JAW SURGERY - A COMPARISON OF RIGID VERSUS WIRE FIXATION SO AMERICAN JOURNAL OF ORTHODONTICS AND DENTOFACIAL ORTHOPEDICS LA English DT Article ID MANDIBULAR ADVANCEMENT SURGERY; SURGICAL-ORTHODONTIC TREATMENT; SAGITTAL SPLIT OSTEOTOMY; SUPRAHYOID MYOTOMY; I OSTEOTOMY; MAXILLA; RELAPSE; RETRUSION AB The subjects of this study were 35 patients who underwent simultaneous surgery for superior repositioning of the maxilla and advancement of the mandible. They were studied cephalometrically for a comparison of the posturgical stability of two commonly used fixation techniques: (1) rigid fixation with bone plates and (2) skeletal-wire fixation. One surgeon performed the operations on all 35 patients, and both groups were studied for an average of 15 months after surgery. Results showed that, although the maxilla remained relatively stable after surgery with both fixation techniques, rigid fixation tended to improve stability, primarily by eliminating relapse in excess of 2 mm. Mandibular stability was much greater with rigid fixation: the amount of relapse of the horizontal projection of B point with this method was 6%, while in the skeletal-wire sample it was 26%. Increased rotational stability between the proximal and distal segments of the mandible appeared to be a major factor in the improved overall stability of the rigid-fixation sample. The amount of mandibular relapse was found to be correlated to the amount of advancement in the wire-fixation sample, but not in the rigid-fixation sample. C1 UNIV N CAROLINA,SCH DENT,DEPT ORTHODONT,7450 BRAUER HALL,CHAPEL HILL,NC 27599. USAF,RAMSTEIN,GERMANY. BAYLOR COLL DENT,DEPT ORAL & MAXILLOFACIAL SURG,DALLAS,TX 75246. NR 36 TC 39 Z9 41 U1 0 U2 0 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0889-5406 J9 AM J ORTHOD DENTOFAC JI Am. J. Orthod. Dentofac. Orthop. PD JUN PY 1991 VL 99 IS 6 BP 550 EP 563 DI 10.1016/S0889-5406(05)81632-4 PG 14 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA FQ346 UT WOS:A1991FQ34600012 PM 2038975 ER PT J AU DENNIS, RJ HILL, JR KETCHUM, NS AF DENNIS, RJ HILL, JR KETCHUM, NS TI THE DURABILITY OF HYDROGEL EXTENDED-WEAR CONTACT-LENSES WORN FOR DAILY WEAR BY USAF AIRCREW MEMBERS SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article AB Hydrogel extended-wear contact lenses, worn on a daily-wear regimen, were tested for 1 year by USAF aircrew members. A total of 62 eyes were fitted with Hydrocurve II (55% water content) spherical lenses, 29 with Hydrocurve II (55% water content) toric lenses, and 61 with CSI-T (38.5% water content) spherical lenses. The mean lens replacement rate for torn lenses per aircrew member was determined to be 1.45 lenses a year. The replacement rate of Hydrocurve II spherical lenses compared to CSI-T lenses was not statistically significant. However, the replacement rate for Hydrocurve II toric lenses was significantly lower than both Hydrocurve II spherical lenses and CSI-T lenses (p < 0.01). The extended-wear lenses tested in this study appeared to be durable enough for the rigors of daily wear. RP DENNIS, RJ (reprint author), USAF,SCH AEROSP MED,OPHTHALMOL BRANCH,AEROSP VIS LAB,BROOKS AFB,TX 78235, USA. NR 13 TC 5 Z9 5 U1 0 U2 1 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD JUN PY 1991 VL 62 IS 6 BP 565 EP 568 PG 4 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA FP096 UT WOS:A1991FP09600011 PM 1859344 ER PT J AU BARLOW, JF RICHARDSON, SE AF BARLOW, JF RICHARDSON, SE TI EVALUATION OF THE DISPOSABLE ABSORPTION CONTAINMENT TRUNK FOR FEMALE U-2 AND TR-1 PILOTS SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Note AB Female U-2 and TR-1 pilots needed a urine collection device as part of their high flight pressure suit ensembles. The Disposable Absorption Containment Trunk (DACT) had been designed for short term use with the NASA Space Shuttle Program. This study evaluated the DACT for the extended and repetitive use required for integration into the U-2 and TR-1 aircraft. Six female subjects were tested wearing a custom-fit DACT and the 1030 full pressure suit ensemble with torso harness. They were strapped into the U-2 ejection seat with parachute and seat kit for 10 h and 45 min every 3 d for a total of 5 sessions. The DACT was evaluated for absorptive capability and comfort. Subjects were monitored for dermatitis, vaginitis, and urinary tract infections. The DACT reliably absorbed menstrual flow and urinary outputs to 950 cc. Higher urinary outputs resulted in minimal leakage. Dermatitis in the form of mild erythema and chafing was present, but cleared between sessions without medical intervention. Complaints concerning comfort were minor and limited to fit problems. One case of vaginitis developed. There were no cases of urinary tract infection. The DACT was found to be an acceptable method of urine collection for female U-2 and TR-1 pilots. Minor changes in design will enhance the comfort and performance of the DACT. C1 NINTH STRATEG HOSP,DIV PHYSIOL SUPPORT,BEALE AFB,CA. NR 9 TC 1 Z9 1 U1 0 U2 1 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD JUN PY 1991 VL 62 IS 6 BP 577 EP 579 PG 3 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA FP096 UT WOS:A1991FP09600015 PM 1859348 ER PT J AU ROBERTSON, C GATCHEL, RJ FOWLER, C AF ROBERTSON, C GATCHEL, RJ FOWLER, C TI EFFECTIVENESS OF A VIDEOTAPED BEHAVIORAL INTERVENTION IN REDUCING ANXIETY IN EMERGENCY ORAL-SURGERY PATIENTS SO BEHAVIORAL MEDICINE LA English DT Article DE BEHAVIORAL TREATMENT; DENTAL ANXIETY; EMERGENCY ORAL SURGERY; VIDEOTAPED INTERVENTION ID DENTAL SURGERY; REDUCTION; FEAR; INFORMATION; ADJUSTMENT; AVOIDANCE AB This study evaluated the effectiveness of a videotaped behavioral treatment program in reducing dental anxiety in emergency oral surgery patients. It compared a videotaped placebo program and a no-treatment control condition. Anxiety, measured for two periods during the study (an anticipatory phase just before oral surgery and a post oral surgery phase), was evaluated by means of self-report, physiological, and behavioral observation measures. Results revealed significant treatment group as well as Group x Sex interaction effects for the heart rate index of physiological arousal. Results also revealed that the treatment program was reported by subjects to be significantly more helpful than the placebo program. Overall, these results suggest that a short, videotaped behavioral intervention can have a positive effect on the oral surgery patient, and that the sex of the subject may be an important variable to be incorporated in evaluating the effectiveness of this type of treatment program. C1 UNIV TEXAS,SW MED CTR,DIV PSYCHOL,5323 HINES BLVD,DALLAS,TX 75235. GOEBEL & VIGEN PSYCHOL,SHREVEPORT,LA. USAF,MED CTR,DEPT ORAL PATHOL,LACKLAND AFB,TX 78236. FU NIDCR NIH HHS [DE 08243] NR 23 TC 17 Z9 17 U1 0 U2 1 PU HELDREF PUBLICATIONS PI WASHINGTON PA 1319 EIGHTEENTH ST NW, WASHINGTON, DC 20036-1802 SN 0896-4289 J9 BEHAV MED JI Behav. Med. PD SUM PY 1991 VL 17 IS 2 BP 77 EP 85 PG 9 WC Behavioral Sciences; Psychiatry SC Behavioral Sciences; Psychiatry GA FQ995 UT WOS:A1991FQ99500005 PM 1878612 ER PT J AU CRABBE, MM PATRISSI, GA FONTENELLE, LJ AF CRABBE, MM PATRISSI, GA FONTENELLE, LJ TI MINIMAL RESECTION FOR BRONCHOGENIC-CARCINOMA - AN UPDATE SO CHEST LA English DT Article ID CELL LUNG-CANCER; STAGE-I; SEGMENTAL RESECTION; WEDGE RESECTION; RECURRENCE; EXPERIENCE; DISEASE AB Minimal resection with curative intent was performed for 24 patients with stage I bronchogenic carcinoma at our institutions over a 12-year period. This was usually done for patients who could not tolerate more extensive resections. The five-year actuarial survival rate was 65 percent. The rate of local recurrences was 13 percent (3/24), and the rate of distant recurrences was 17 percent (4/24), with a median follow-up of 38 months. Survival and recurrence rates are similar for patients undergoing minimal resection and those being reported for patients undergoing more extensive resections for stage I bronchogenic carcinoma. In selected patients, minimal resection should be considered as an acceptable alternative treatment for patients with stage I bronchogenic carcinoma. C1 USAF,MED CTR,KEESLER AFB,MS 39534. VET ADM MED CTR,BILOXI,MS. RP CRABBE, MM (reprint author), USAF,DEPT SURG,SCHSG,WRIGHT PATTERSON AFB,OH 45433, USA. NR 21 TC 14 Z9 14 U1 0 U2 0 PU AMER COLL CHEST PHYSICIANS PI NORTHBROOK PA 3300 DUNDEE ROAD, NORTHBROOK, IL 60062-2348 SN 0012-3692 J9 CHEST JI Chest PD JUN PY 1991 VL 99 IS 6 BP 1421 EP 1424 DI 10.1378/chest.99.6.1421 PG 4 WC Critical Care Medicine; Respiratory System SC General & Internal Medicine; Respiratory System GA FP997 UT WOS:A1991FP99700021 PM 2036825 ER PT J AU CLERICI, M TACKET, CO VIA, CS LUCEY, DR MULUK, SC ZAJAC, RA BOSWELL, RN BERZOFSKY, JA SHEARER, GM AF CLERICI, M TACKET, CO VIA, CS LUCEY, DR MULUK, SC ZAJAC, RA BOSWELL, RN BERZOFSKY, JA SHEARER, GM TI IMMUNIZATION WITH SUBUNIT HUMAN-IMMUNODEFICIENCY-VIRUS VACCINE GENERATES STRONGER T-HELPER CELL-IMMUNITY THAN NATURAL INFECTION SO EUROPEAN JOURNAL OF IMMUNOLOGY LA English DT Article ID ANTIGENIC SITES; HIV; RECOGNITION; LYMPHOCYTES; INDIVIDUALS; INDUCTION; SEQUENCE; PEPTIDES AB Healthy, human immunodeficiency virus seronegative (HIV-) volunteers were multiply immunized with a recombinant gp 160 (rgp160) candidate acquired immunodeficiency syndrome (AIDS) vaccine. Peripheral blood lymphocytes from volunteers immunized with 40-mu-g or with 80-mu-g (two volunteers per group) of rgp160, as well as from control donors, were tested for T helper (T(h)) cell function either prior to immunization, 8 to 12 months after the third immunization, or 2 to 5 months after the fourth immunization. The T(h) cell functional tests included antigen-induced in vitro interleukin 2 (IL2) production and proliferation in response to influenza A virus (FLU) and to four synthetic peptides of HIV gp120 and gp160, previously demonstrated to be recognized by T cells from HIV naturally infected patients. Our results demonstrate the following: (a) immunization of HIV- individuals with rgp160 results in IL2 production and T cell proliferation in response to HIV determinants; (b) boosting with rgp160 enhances T(h) function; (c) HIV-specific T(h) function is up to 100-fold greater in the multiply immunized volunteers than that observed in asymptomatic, HIV-infected individuals; and (d) multiple immunization with rgp160 does not impair T(h) function to a non-HIV antigen such as influenza A virus. These results indicate that immunization of uninfected individuals with an HIV subunit vaccine results in much stronger T(h) cell immunity than does natural infection and suggests that vaccination against HIV may be possible. C1 NCI,EXPTL IMMUNOL BRANCH,BLDG 10,ROOM 4B17,BETHESDA,MD 20892. WILFORD HALL USAF MED CTR,HIV UNIT,LACKLAND AFB,TX 78236. UNIV MARYLAND,SCH MED,CTR VACCINE DEV,BALTIMORE,MD 21201. UNIV MARYLAND,SCH MED,DIV RHEUMATOL & CLIN IMMUNOL,BALTIMORE,MD 21201. NCI,METAB BRANCH,BETHESDA,MD 20892. UNIV MARYLAND,SCH MED,DEPT MED,BALTIMORE,MD 21201. NR 24 TC 45 Z9 45 U1 0 U2 1 PU VCH PUBLISHERS INC PI DEERFIELD BEACH PA 303 NW 12TH AVE, DEERFIELD BEACH, FL 33442-1788 SN 0014-2980 J9 EUR J IMMUNOL JI Eur. J. Immunol. PD JUN PY 1991 VL 21 IS 6 BP 1345 EP 1349 DI 10.1002/eji.1830210603 PG 5 WC Immunology SC Immunology GA FT005 UT WOS:A1991FT00500002 PM 1845391 ER PT J AU DIAZ, MJ FOWLER, W HNATOW, BJ AF DIAZ, MJ FOWLER, W HNATOW, BJ TI CONGENITAL GALLBLADDER DUPLICATION - PREOPERATIVE DIAGNOSIS BY ULTRASONOGRAPHY SO GASTROINTESTINAL RADIOLOGY LA English DT Article DE GALLBLADDER ANOMALIES; CHOLECYSTITIS; GALLBLADDER DUPLICATION; CHOLELITHIASIS; GALLBLADDER ANATOMY; ULTRASONOGRAPHY; HEPATOBILIARY SCINTIGRAPHY AB Congenital gallbladder duplication, an uncommon but potentially complicating malformation, is rarely diagnosed preoperatively. A case in which the diagnosis was achieved by real-time ultrasonography is presented and correlated with hepatobiliary scintigraphy. The efficacy of these diagnostic modalities is discussed, and the available literature is reviewed. C1 WILFORD HALL USAF MED CTR,DEPT SURG,LACKLAND AFB,TX 78236. RP DIAZ, MJ (reprint author), WILFORD HALL USAF MED CTR,DEPT RADIOL,MC,SGHRD,LACKLAND AFB,TX 78236, USA. NR 12 TC 15 Z9 16 U1 0 U2 0 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0364-2356 J9 GASTROINTEST RADIOL PD SUM PY 1991 VL 16 IS 3 BP 198 EP 200 DI 10.1007/BF01887345 PG 3 WC Gastroenterology & Hepatology; Radiology, Nuclear Medicine & Medical Imaging SC Gastroenterology & Hepatology; Radiology, Nuclear Medicine & Medical Imaging GA FM658 UT WOS:A1991FM65800003 PM 1879633 ER PT J AU WILLEMANN, RJ AF WILLEMANN, RJ TI A SIMPLE EXPLANATION FOR THE DEPTH DISTRIBUTION OF DEEP EARTHQUAKES SO GEOPHYSICAL RESEARCH LETTERS LA English DT Article ID HORIZONTAL SHEAR-FLOW; FOCUS EARTHQUAKES; DESCENDING SLAB; MANTLE BENEATH; TONGA ARC; LITHOSPHERE; SEISMICITY; RHEOLOGY; STRESS AB In a model for the depth distribution of deep earthquakes, I assume that deep earthquakes occur only above a critical deviatoric stress and that where the stress is achieved the seismicity rate is proportional to the strain rate. The model seismicity rate increases sharply before terminating, in agreement with the observed depth distribution. Since the assumptions are valid for most plausible seismic processes, no large stresses or unusual earthquake mechanisms near the termination of seismicity are required. RP WILLEMANN, RJ (reprint author), USAF,PHILIPS LAB,LWH,BEDFORD,MA 01731, USA. NR 23 TC 2 Z9 2 U1 0 U2 1 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0094-8276 J9 GEOPHYS RES LETT JI Geophys. Res. Lett. PD JUN PY 1991 VL 18 IS 6 BP 1123 EP 1126 DI 10.1029/91GL01081 PG 4 WC Geosciences, Multidisciplinary SC Geology GA FR190 UT WOS:A1991FR19000035 ER PT J AU MCCORMICK, WS TSUI, JBY AF MCCORMICK, WS TSUI, JBY TI SUBOPTIMAL REAL-TIME FREQUENCY INCIDENT-ANGLE ESTIMATOR FOR MULTIPLE RADAR PULSES SO IEE PROCEEDINGS-F RADAR AND SIGNAL PROCESSING LA English DT Article DE PULSE-CODE MODULATION ID SPECTRAL ESTIMATION AB A method is presented that provides numerical estimates of properly paired frequency and incident angles for an arbitrary number of sinusoidal radar pulses incident on a linear array. The key element of the method is a two-stage sub-optimal technique that estimates the angle of arrival of a pulse by using the output of two antenna elements and a previously calculated value of paired frequency. A method of extending the two-element method to multiple elements, by using a noise protected modification of the Chinese remainder theorem (CRT) is also advanced. Owing to its simplicity, the algorithm is appropriate to real-time processing. C1 USAF,WRIGHT RES & DEV CTR,WRIGHT PATTERSON AFB,OH 45433. RP MCCORMICK, WS (reprint author), WRIGHT STATE UNIV,DEPT ELECT ENGN,DAYTON,OH 45435, USA. NR 15 TC 1 Z9 1 U1 0 U2 0 PU IEE-INST ELEC ENG PI HERTFORD PA MICHAEL FARADAY HOUSE SIX HILLS WAY STEVENAGE, HERTFORD, ENGLAND SG1 2AY SN 0956-375X J9 IEE PROC-F PD JUN PY 1991 VL 138 IS 3 BP 247 EP 254 PG 8 WC Telecommunications SC Telecommunications GA FM418 UT WOS:A1991FM41800009 ER PT J AU MARK, WS SIMPSON, RL AF MARK, WS SIMPSON, RL TI KNOWLEDGE-BASED SYSTEMS - AN OVERVIEW SO IEEE EXPERT-INTELLIGENT SYSTEMS & THEIR APPLICATIONS LA English DT Editorial Material C1 USAF,WASHINGTON,DC 20330. RP MARK, WS (reprint author), LOCKHEED PALO ALTO RES LABS,O-96-01,B-254E,3251 HANOVER ST,PALO ALTO,CA 94304, USA. NR 8 TC 4 Z9 4 U1 0 U2 2 PU IEEE COMPUTER SOC PI LOS ALAMITOS PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1264 SN 0885-9000 J9 IEEE EXPERT JI IEEE Expert-Intell. Syst. Appl. PD JUN PY 1991 VL 6 IS 3 BP 12 EP 17 DI 10.1109/64.87680 PG 6 WC Computer Science, Artificial Intelligence; Engineering, Electrical & Electronic SC Computer Science; Engineering GA FR786 UT WOS:A1991FR78600003 ER PT J AU BANKS, SB LIZZA, CS AF BANKS, SB LIZZA, CS TI PILOTS ASSOCIATE - A COOPERATIVE, KNOWLEDGE-BASED SYSTEM APPLICATION SO IEEE EXPERT-INTELLIGENT SYSTEMS & THEIR APPLICATIONS LA English DT Article C1 USAF,WRIGHT AERONAUT LABS,JOINT COCKPIT PROGRAMS OFF,PILOTS ASSOCIATE PROGRAM,WRIGHT PATTERSON AFB,OH 45433. RP BANKS, SB (reprint author), USAF,HEADQUARTERS AERONAUT SYST DIV,WRIGHT PATTERSON AFB,OH 45433, USA. NR 8 TC 24 Z9 29 U1 0 U2 0 PU IEEE COMPUTER SOC PI LOS ALAMITOS PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1264 SN 0885-9000 J9 IEEE EXPERT JI IEEE Expert-Intell. Syst. Appl. PD JUN PY 1991 VL 6 IS 3 BP 18 EP 29 DI 10.1109/64.87681 PG 12 WC Computer Science, Artificial Intelligence; Engineering, Electrical & Electronic SC Computer Science; Engineering GA FR786 UT WOS:A1991FR78600004 ER PT J AU HATSELL, CP AF HATSELL, CP TI MEAN-SQUARE ERROR DUE TO GRADIOMETER FIELD MEASURING DEVICES SO IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING LA English DT Article AB Gradiometers use spatial common mode magnetic field rejection to reduce interference from distant sources. They also introduce distortion that can be severe, rendering experimental data difficult to interpret. Attempts to recover the measured magnetic field from the gradiometer output will be plagued by the nonexistence of a spatial function for deconvolution (except for first-order gradiometers), and by the high-pass nature of the spatial transform that emphasizes high spatial frequency noise. Goals of a design for a facility for measuring biomagnetic fields should be an effective shielded room and a field detector employing a first-order gradiometer. C1 USAF,AEROSP MED RES LAB,WRIGHT PATTERSON AFB,OH 45433. NR 7 TC 0 Z9 0 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9294 J9 IEEE T BIO-MED ENG JI IEEE Trans. Biomed. Eng. PD JUN PY 1991 VL 38 IS 6 BP 597 EP 601 DI 10.1109/10.81585 PG 5 WC Engineering, Biomedical SC Engineering GA FT332 UT WOS:A1991FT33200011 PM 1879849 ER PT J AU LOOK, DC EVANS, KR STUTZ, CE AF LOOK, DC EVANS, KR STUTZ, CE TI EFFECTS OF A BUFFER LAYER ON FREE-CARRIER DEPLETION IN N-TYPE GAAS SO IEEE TRANSACTIONS ON ELECTRON DEVICES LA English DT Article ID LOW-FREQUENCY DISPERSION; MESFETS; TRANSCONDUCTANCE AB Poisson's equation is solved in the depletion approximation to give an expression for the sheet free-carrier charge transferred from a conductive semiconductor layer to acceptor (or donor) states at interfaces or in the bulk material. The principal goal of the paper is to show that a relatively thin, undoped buffer layer between the substrate and active layer can dramatically lower the free-carrier loss to substrate interface states. Data on molecular-beam epitaxial, n-type GaAs agree well with the theory, but show that there still is some loss at the interface between the active layer and buffer layer. C1 USAF,WRIGHT LAB,ELECTR TECHNOL DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP LOOK, DC (reprint author), WRIGHT STATE UNIV,RES CTR,DAYTON,OH 45435, USA. NR 10 TC 6 Z9 6 U1 0 U2 2 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9383 J9 IEEE T ELECTRON DEV JI IEEE Trans. Electron Devices PD JUN PY 1991 VL 38 IS 6 BP 1280 EP 1284 DI 10.1109/16.81617 PG 5 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA FL269 UT WOS:A1991FL26900007 ER PT J AU DOLAN, MJ COX, RA AF DOLAN, MJ COX, RA TI PRODUCTION AND CHARACTERIZATION OF A MONOCLONAL-ANTIBODY TO THE COMPLEMENT-FIXATION ANTIGEN OF COCCIDIOIDES-IMMITIS SO INFECTION AND IMMUNITY LA English DT Article ID IMMUNOELECTROPHORESIS; IMMUNIZATION AB Detection of complement-fixing antibody to coccidioidin by using the complement fixation test or an immunodiffusion assay for complement-fixing antibody (IDCF) is widely viewed as the most useful immunodiagnostic test for coccidioidomycosis. In this investigation, we report the production of an immunoglobulin G subclass 1 (IgG1) monoclonal antibody (MAb) to the IDCF antigen for use as a biospecific ligand for purifying the IDCF antigen on solid-phase immunosorbents and for use as a reagent for screening genomic or cDNA expression libraries from Coccidiodes immitis. BALB/c mice were immunized by intramuscular injections of coccidioidin in adjuvant, followed by an intrasplenic booster injection of coccidioidin in saline. The spleen cells were fused with SP2/0 Ag14 myeloma cells, and the fusion products were screened for IgG antibody to coccidioidin by using an enzyme-linked immunosorbent assay. Positive hybridomas were cloned and evaluated for reactivity to the IDCF antigen by two-dimensional immunoelectrophoresis and by immunoblotting. An IgG1 MAb was produced that was specific for the IDCF antigen when evaluated by two-dimensional immunoelectrophoresis and immunoblotting. The epitope recognized by the MAb was heat labile (60-degrees-C, 30 min) and susceptible to enzymatic digestion with pronase but was resistant to treatment with lipase, alpha-mannosidase, glucose oxidase, and endoglycosidase H. This heat-labile peptide epitope appears to be specific to C. immitis, as judged by the fact that the MAb was not reactive in immunoblots or enzyme-linked immunosorbent assays of histoplasmin or blastomycin. C1 SAN ANTONIO STATE CHEST HOSP,DEPT RES IMMUNOL,SAN ANTONIO,TX 78223. USAF,MED CTR,DEPT INFECT DIS,LACKLAND AFB,TX 78236. FU NIAID NIH HHS [AI21431] NR 21 TC 10 Z9 10 U1 0 U2 2 PU AMER SOC MICROBIOLOGY PI WASHINGTON PA 1325 MASSACHUSETTS AVENUE, NW, WASHINGTON, DC 20005-4171 SN 0019-9567 J9 INFECT IMMUN JI Infect. Immun. PD JUN PY 1991 VL 59 IS 6 BP 2175 EP 2180 PG 6 WC Immunology; Infectious Diseases SC Immunology; Infectious Diseases GA FN775 UT WOS:A1991FN77500048 PM 1709921 ER PT J AU NEJAD, AS AHMED, SA BORAY, RS AF NEJAD, AS AHMED, SA BORAY, RS TI SWIRL NUMBER EFFECTS ON CONFINED FLOWS IN A MODEL OF A DUMP COMBUSTOR SO INTERNATIONAL JOURNAL OF ENGINEERING FLUID MECHANICS LA English DT Article AB The results of an experimental investigation of isothermal swirling flows in a model of a coaxial dump combustor are presented. A set of three constant-angle swirlers were designed and fabricated for this aspect of the study. A two-component LDV system was used to obtain the velocity measurements of the flowfield. The detailed data base is provided for the development of turbulent closure models and the CFD code validation for the ramjet or turbojet applications. The results show the effects of the swirl strength on the flow characteristics, enhanced turbulent mixing, and the resulting shortened corner recirculation zone. RP NEJAD, AS (reprint author), AERO PROPULS & POWER LAB,DIV ADV PROPULS,EXPTL RES BRANCH,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU GULF PUBL CO PI HOUSTON PA BOX 2608, HOUSTON, TX 77252-2608 SN 0893-3960 J9 INT J ENG FLUID MECH PD SUM PY 1991 VL 4 IS 2 BP 157 EP 178 PG 22 WC Engineering, Chemical; Mechanics; Physics, Fluids & Plasmas SC Engineering; Mechanics; Physics GA GQ055 UT WOS:A1991GQ05500002 ER PT J AU FOX, JH DONEGAN, TL JACOCKS, JL NICHOLS, RH AF FOX, JH DONEGAN, TL JACOCKS, JL NICHOLS, RH TI COMPUTED EULER FLOWFIELD FOR A TRANSONIC AIRCRAFT WITH STORES SO JOURNAL OF AIRCRAFT LA English DT Article AB A series of computations solving the Euler equations that model the flowfield produced by the F-15E aircraft flying at a Mach number of 0.98 has been completed. Three configurations were simulated. The most complex configuration consisted of a wing-body combination with an ingesting inlet, pylon system, a targeting pod with pylon, and a finned store in carriage position. This required 29 grids and subgrids with a total of 1.2 x 10(6) mesh points. Results generally compared favorably with wind-tunnel measurements of surface pressure and with a cone-probe survey of the pressure field proximate to the store carriage position. The trajectory of the finned store was well predicted. RP FOX, JH (reprint author), ARNOLD ENGN DEV CTR,AEROSP SYST FACIL,ARNOLD AFB,TN 37389, USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0021-8669 J9 J AIRCRAFT JI J. Aircr. PD JUN PY 1991 VL 28 IS 6 BP 389 EP 396 DI 10.2514/3.46039 PG 8 WC Engineering, Aerospace SC Engineering GA FX493 UT WOS:A1991FX49300006 ER PT J AU RYAN, RL MALL, S AF RYAN, RL MALL, S TI RESPONSE OF SUBSURFACE RIGID STRIPS TO PLANE HARMONIC SHEAR-WAVES SO JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME LA English DT Note C1 USN,RES LAB,DEPT NAVY,WASHINGTON,DC 20375. USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433. NR 1 TC 0 Z9 2 U1 0 U2 0 PU ASME-AMER SOC MECHANICAL ENG PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 0021-8936 J9 J APPL MECH-T ASME JI J. Appl. Mech.-Trans. ASME PD JUN PY 1991 VL 58 IS 2 BP 594 EP 596 DI 10.1115/1.2897232 PG 3 WC Mechanics SC Mechanics GA HP716 UT WOS:A1991HP71600047 ER PT J AU SANDHU, RS SENDECKYJ, GP AF SANDHU, RS SENDECKYJ, GP TI EDGE DELAMINATION OF (-+TAU-M/90N/2)S LAMINATES SUBJECTED TO TENSILE LOADING SO JOURNAL OF COMPOSITES TECHNOLOGY & RESEARCH LA English DT Article DE EDGE DELAMINATION; DELAMINATION INITIATION CRITERIA; DELAMINATION MOMENT COEFFICIENT; GRAPHITE-EPOXY LAMINATES; ACOUSTIC EMISSION; PENETRANT ENHANCED X-RAY PHOTOGRAPHY AB Initiation of edge delamination of symmetric laminates consisting of angle and 90-degrees piles was investigated. Five independent criteria were used to determine delamination initiation for a given set of m and n of angle and 90-degrees piles. In Criteria 1 and 2, delamination moment rates (delamination moment coefficients or DMCs) relative to the applied average axial stress and strain in the laminates with intact 90-degrees piles were maximized. The same approach was used in Criteria 3 and 4 except that the laminates had cracked 90-degrees piles. Criterion 5 was based on establishing the maximum mismatch of Poisson's ratios of angle and 90-degrees piles. The expressions derived on the basis of the criteria were numerically evaluated. The results of these studies indicated that the laminates designed on the basis of Criterion 5 had the minimum tendency to delaminate. In addition, it was found that an increase in thickness of laminates tended to increase the delamination tendency. To confirm the results, four laminates were designed in accordance with Criteria 1, 2, and 5, respectively. All four laminates were analyzed using the finite element method. Besides analytical studies, four graphite-epoxy panels corresponding to the four laminates were fabricated, cut into specimens, and tested under uniaxial tensile loading to determine the onset of delamination. Both finite element analyses and experimental data confirmed the delamination moment coefficient to be a valid quantitative measure of the tendency of the laminates to delaminate. This delamination moment coefficient concept can be used to determine the stacking sequence of laminates either to have maximum or minimum tendency to delaminate. The laminates designed to have maximum tendency to delaminate were observed to fail in mixed modes consisting of combined transverse cracking and edge delamination. This mixed mode can be avoided by limiting the strain in the loading direction to a value less than the cracking strain (0.4%) of 90-degrees piles. C1 WRIGHT LAB,FLIGHT DYNAM DIRECTORATE,DIV STRUCT,STRUCT CONCEPTS BRANCH,WRIGHT PATTERSON AFB,OH 45433. WRIGHT LAB,FLIGHT DYNAM DIRECTORATE,DIV STRUCT,STRUCT INTEGR BRANCH,WRIGHT PATTERSON AFB,OH 45433. NR 5 TC 1 Z9 1 U1 0 U2 1 PU AMER SOC TESTING MATERIALS PI W CONSHOHOCKEN PA 100 BARR HARBOR DR, W CONSHOHOCKEN, PA 19428-2959 SN 0884-6804 J9 J COMPOS TECH RES JI J. Compos. Technol. Res. PD SUM PY 1991 VL 13 IS 2 BP 78 EP 90 PG 13 WC Materials Science, Composites; Polymer Science SC Materials Science; Polymer Science GA FT841 UT WOS:A1991FT84100002 ER PT J AU MYERS, GL MONTGOMERY, S AF MYERS, GL MONTGOMERY, S TI A COMPARISON OF WEIGHTS OF DEBRIS EXTRUDED APICALLY BY CONVENTIONAL FILING AND CANAL MASTER TECHNIQUES SO JOURNAL OF ENDODONTICS LA English DT Article ID FLARE-UPS; ENDODONTICS AB Sixty extracted human teeth were divided into three groups of 20 each. Apically extruded debris and irrigant were collected, dried, and weighed by the following three instrumentation techniques: (a) group 1, filling 1 mm short of the foramen; (b) group 2, Canal Master instrumentation to the foramen; and (c) group 3, filling to the foramen (for a relative comparison). The results indicated that all three groups were significantly different from one another. Group 1 had the least amount of debris extruded. Of the two groups instrumented to the foramen, group 3 had twice as much debris extruded as group 2. An apical dentinal plug was frequently found in group 1 and was probably a major reason why this group had the least amount of extruded debris. The significance of this dentinal plug and possible indications for instrumentation to the foramen are discussed. C1 UNIV TEXAS,HLTH SCI CTR,GRAD DIV ENDODONT,7703 FLOYD CURL DR,SAN ANTONIO,TX 78284. WILFORD HALL USAF MED CTR,DEPT ENDODONT,LACKLAND AFB,TX 78236. NR 21 TC 65 Z9 70 U1 0 U2 0 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0099-2399 J9 J ENDODONT JI J. Endod. PD JUN PY 1991 VL 17 IS 6 BP 275 EP 279 DI 10.1016/S0099-2399(06)81866-2 PG 5 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA FP240 UT WOS:A1991FP24000005 PM 1940753 ER PT J AU MARKLUND, GT BLOMBERG, LG MURPHREE, JS ELPHINSTONE, RD ZANETTI, LJ ERLANDSON, RE SANDAHL, I DELABEAUJARDIERE, O OPGENOORTH, H RICH, FJ AF MARKLUND, GT BLOMBERG, LG MURPHREE, JS ELPHINSTONE, RD ZANETTI, LJ ERLANDSON, RE SANDAHL, I DELABEAUJARDIERE, O OPGENOORTH, H RICH, FJ TI ON THE ELECTRODYNAMIC STATE OF THE AURORAL IONOSPHERE DURING NORTHWARD INTERPLANETARY MAGNETIC-FIELD - A TRANSPOLAR ARC CASE-STUDY SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article ID HIGH-LATITUDE IONOSPHERE; ALIGNED CURRENTS; LOCALIZED OBSERVATIONS; BZ NORTHWARD; POLAR-CAP; CONVECTION; VIKING; SATELLITE; CONFIGURATION; DISTRIBUTIONS AB The ionospheric electrodynamical state has been reconstructed for a transpolar arc event during northward interplanetary magnetic field conditions. An extensive set of observations by Viking and other satellites and by ground-based radars has been used to provide realistic model input data or to verify the modeling results. The resulting convection pattern is found to be consistent with the Viking electric field and intimately linked to the prevalent auroral distribution. It is characterized by a large evening cell, well extended across noon and split up by two separated potential minima, and a minor crescent-shaped morning cell. The convection signatures are found to vary a lot along the transpolar arc depending on the relative role of the arc-associated convection and the ambient convection. The transpolar arc is generally embedded in antisunward convective flow except near the connection points with the auroral oval, where sunward flow exists in localized regions. C1 UNIV CALGARY,DEPT PHYS,CALGARY T2N 1N4,ALBERTA,CANADA. USAF,GEOPHYS LAB,DIV SPACE PHYS,BEDFORD,MA 01731. JOHNS HOPKINS UNIV,APPL PHYS LAB,LAUREL,MD 20707. SWEDISH INST SPACE PHYS,S-98128 KIRUNA,SWEDEN. SRI INT,MENLO PK,CA 94025. SWEDISH INST SPACE PHYS,UPPSALA DIV,S-75591 UPPSALA,SWEDEN. RP MARKLUND, GT (reprint author), ROYAL INST TECHNOL,DEPT PLASMA PHYS,ALFVEN LAB,S-10044 STOCKHOLM 70,SWEDEN. RI Erlandson, Robert/G-2767-2015 NR 25 TC 26 Z9 26 U1 0 U2 2 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES JI J. Geophys. Res-Space Phys. PD JUN 1 PY 1991 VL 96 IS A6 BP 9567 EP 9578 DI 10.1029/90JA02644 PG 12 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA FV651 UT WOS:A1991FV65100015 ER PT J AU VILLALON, E BURKE, WJ AF VILLALON, E BURKE, WJ TI NEAR-EQUATORIAL PITCH ANGLE DIFFUSION OF ENERGETIC ELECTRONS BY OBLIQUE WHISTLER WAVES SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article ID RADIATION BELT; VLF WAVES; PRECIPITATION; MAGNETOSPHERE; PLASMASPHERE; PLASMAPAUSE; INSTABILITY; DRIVEN AB The pitch angle scattering of trapped, energetic electrons by obliquely propagating whistler waves in the equatorial regions of the plasmasphere is investigated. Storm-injected electrons moving along field lines near the equator interact with electromagnetic waves whose frequencies are Doppler-shifted to some harmonic of the cyclotron frequency. The wave normals are distributed almost parallel to the geomagnetic field. Waves grow from the combined contributions of a large reservoir of energetic electrons that are driven into the loss cone by the highest-harmonic interactions permitted to them. Relativistic, quasi-linear theory is applied to obtain self-consistent equations describing the temporal evolution of waves and particles over time scales which are longer than the particle bounce time and group time delay of the waves. The equilibrium solutions and their stability are studied, considering the reflection of the waves by the ionosphere and the coupling of multiple harmonic resonances. The contributions of nonlocal wave sources are also included in the theory. Numerical computations based on our theoretical analysis for regions inside the plasmasphere (L less-than-or-equal-to 2) and near the plasmapause (L approximately 4.5) and for the first three harmonic resonances are presented. C1 USAF,GEOPHYS LAB,BEDFORD,MA 01731. RP VILLALON, E (reprint author), NORTHEASTERN UNIV,CTR ELECTROMAGNET RES,BOSTON,MA 01742, USA. NR 29 TC 8 Z9 8 U1 0 U2 0 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES JI J. Geophys. Res-Space Phys. PD JUN 1 PY 1991 VL 96 IS A6 BP 9655 EP 9667 DI 10.1029/91JA00444 PG 13 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA FV651 UT WOS:A1991FV65100021 ER PT J AU MCKNIGHT, DS DUEBER, RE TAYLOR, EW AF MCKNIGHT, DS DUEBER, RE TAYLOR, EW TI SPACE DEBRIS AND MICROMETEORITE EVENTS EXPERIENCED BY WL EXPERIMENT-701 IN PROLONGED LOW EARTH ORBIT SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article AB Air Force Systems Command Weapons Laboratory experiment 701 (Space Environment Effects on Fiber Optic Systems) was housed aboard the Long Duration Exposure Facility and placed into orbit on April 6, 1984, by the shuttle Challenger. It was retrieved 69 months later by the shuttle Columbia on January 12, 1990. During this period in orbit, the experiment experienced numerous debris or micrometeorite impacts. Impact flux values, crater characteristics, and shock phenomena on the experiment's space-exposed surfaces were observed to be similar to returned materials of the Solar Max satellite. This paper presents the analysis of preliminary data, describes data reduction techniques, and outlines areas of future study. C1 USAF ACAD,DEPT CHEM,COLORADO SPRINGS,CO 80840. USAF,SYST COMMAND,PHILLIPS LAB SQCO,OPTOELECTR SECT,KIRTLAND AFB,NM 87117. RP MCKNIGHT, DS (reprint author), USAF ACAD,DEPT PHYS,COLORADO SPRINGS,CO 80840, USA. NR 5 TC 1 Z9 1 U1 0 U2 1 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES JI J. Geophys. Res-Space Phys. PD JUN 1 PY 1991 VL 96 IS A6 BP 9829 EP 9833 DI 10.1029/90JA02097 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA FV651 UT WOS:A1991FV65100038 ER PT J AU STREVELL, MW CRAGON, HG AF STREVELL, MW CRAGON, HG TI DATA TYPE TRANSFORMATION IN HETEROGENEOUS SHARED MEMORY MULTIPROCESSORS SO JOURNAL OF PARALLEL AND DISTRIBUTED COMPUTING LA English DT Note C1 UNIV TEXAS,DEPT ELECT & COMP ENGN,AUSTIN,TX 78712. RP STREVELL, MW (reprint author), USAF ACAD,DEPT ELECT ENGN,COLORADO SPRINGS,CO 80840, USA. NR 21 TC 0 Z9 0 U1 0 U2 0 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 SN 0743-7315 J9 J PARALLEL DISTR COM JI J. Parallel Distrib. Comput. PD JUN PY 1991 VL 12 IS 2 BP 164 EP 170 DI 10.1016/0743-7315(91)90021-Z PG 7 WC Computer Science, Theory & Methods SC Computer Science GA FN949 UT WOS:A1991FN94900009 ER PT J AU LAWS, HF AF LAWS, HF TI EFFECT OF LACTASE ON INFANTILE COLIC SO JOURNAL OF PEDIATRICS LA English DT Letter RP LAWS, HF (reprint author), MED GRP 554, NELLIS AFB, NV 89191 USA. NR 1 TC 3 Z9 5 U1 0 U2 3 PU MOSBY-ELSEVIER PI NEW YORK PA 360 PARK AVENUE SOUTH, NEW YORK, NY 10010-1710 USA SN 0022-3476 EI 1097-6833 J9 J PEDIATR-US JI J. Pediatr. PD JUN PY 1991 VL 118 IS 6 BP 993 EP 993 DI 10.1016/S0022-3476(05)82228-0 PG 1 WC Pediatrics SC Pediatrics GA FQ108 UT WOS:A1991FQ10800034 PM 1904092 ER PT J AU LINDLEY, PM REINHARDT, BA AF LINDLEY, PM REINHARDT, BA TI INTRAMOLECULAR CYCLIZATION OF PENDANT PHENYLETHYNYL GROUPS AS A ROUTE TO SOLVENT RESISTANCE IN POLYPHENYLQUINOXALINES SO JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY LA English DT Article AB Biphenyl-based bisbenzil monomers which contain pendant phenylethynyl groups in the 2,2'-positions were condensed with 3,3'-diaminobenzidine to make polyphenylquinoxalines (PPQs) of high molecular weight. Thermal cure of these polymers at 193-degrees-C caused an intramolecular cyclization (IMC) of the phenylethynyl groups to give the rigid 9-phenyldibenzanthracene system in the backbone of the polymer. The initial, uncured polymers formed tough films which were soluble in m-cresol and chlorinated solvents, but after thermal cure the films became insoluble in all common organic solvents and acids while maintaining their toughness. DSC scans of the cured materials showed small residual exotherms indicating that after vitrification even the intramolecular rotation required for the IMC reaction became restricted. C1 USAF,WRIGHT RES & DEV CTR,MAT LAB,DIV NONMETALL MAT,WRIGHT PATTERSON AFB,OH 45433. NR 12 TC 17 Z9 17 U1 0 U2 0 PU JOHN WILEY & SONS INC PI NEW YORK PA 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0887-624X J9 J POLYM SCI POL CHEM JI J. Polym. Sci. Pol. Chem. PD JUN PY 1991 VL 29 IS 7 BP 1061 EP 1071 DI 10.1002/pola.1991.080290714 PG 11 WC Polymer Science SC Polymer Science GA FP249 UT WOS:A1991FP24900014 ER PT J AU MEYER, JB KNUDSON, RC BUTLER, EB AF MEYER, JB KNUDSON, RC BUTLER, EB TI INTRANASAL STENT FOR STABILIZATION AND FIXATION OF INTERSTITIAL RADIOACTIVE ISOTOPES SO JOURNAL OF PROSTHETIC DENTISTRY LA English DT Article AB This article introduces the use of an intranasal stent for the stabilization and fixation of afterloading catheters during interstitial radiation therapy. After catheters have been positioned to desired locations within the stent, they are immobilized with light polymerizing resin. The fixation of the catheters to the stent allows the radiotherapist to afterload predetermined radiation sources to desired locations. This technique maximizes tumor response and minimizes untoward effects to normal surrounding tissues. C1 WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. NR 2 TC 1 Z9 1 U1 0 U2 0 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0022-3913 J9 J PROSTHET DENT JI J. Prosthet. Dent. PD JUN PY 1991 VL 65 IS 6 BP 813 EP 815 DI 10.1016/S0022-3913(05)80019-8 PG 3 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA FT823 UT WOS:A1991FT82300018 PM 2072327 ER PT J AU MATHEWS, MF BREEDING, LC DIXON, DL AQUILINO, SA AF MATHEWS, MF BREEDING, LC DIXON, DL AQUILINO, SA TI THE EFFECT OF CONNECTOR DESIGN ON CEMENT RETENTION IN AN IMPLANT AND NATURAL TOOTH-SUPPORTED FIXED PARTIAL DENTURE SO JOURNAL OF PROSTHETIC DENTISTRY LA English DT Article ID PROSTHESES AB This study investigated the effect of connector design, rigid or nonrigid, on cement retention in a combined implant and natural tooth-supported fixed partial denture. A prepared natural tooth was placed in a Plexiglas block in a manner that it could ove approximately the same as a healthy premolar. An endosseous implant was placed in the block so that it was immobile. Joining the prepared tooth and implant was a fixed partial denture that could be made rigid or nonrigid. The natural tooth retainer was cemented to the prepared tooth, and the implant retainer was affixed to the implant fixture with a gold screw. One year of stress was applied to the fixed partial denture by a force simulation machine. Twenty randomly ordered tests were completed, 10 of each connector design. Retentive values for the cemented retainers were recorded and statistically compared by use of Student's independent t test. No significant difference in cement retentive strength between designs was found (p < 0.05). C1 UNIV KENTUCKY,COLL DENT,DEPT ORAL HLTH PRACTICE,LEXINGTON,KY 40536. USAF,WASHINGTON,DC 20330. UNIV IOWA,COLL DENT,DEPT PROSTHODONT,IOWA CITY,IA 52242. NR 15 TC 13 Z9 14 U1 0 U2 2 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0022-3913 J9 J PROSTHET DENT JI J. Prosthet. Dent. PD JUN PY 1991 VL 65 IS 6 BP 822 EP 827 DI 10.1016/S0022-3913(05)80021-6 PG 6 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA FT823 UT WOS:A1991FT82300020 PM 2072329 ER PT J AU HANKINS, GDV HAMMOND, TL YEOMANS, ER AF HANKINS, GDV HAMMOND, TL YEOMANS, ER TI AMNIOTIC CAVITY ACCUMULATION OF MAGNESIUM WITH PROLONGED MAGNESIUM-SULFATE TOCOLYSIS SO JOURNAL OF REPRODUCTIVE MEDICINE LA English DT Article ID PREMATURE DELIVERY; PRETERM LABOR; AGENT; RITODRINE; INFUSION; CALCIUM AB In seven women, continuous intravenous tocolysis with magnesium sulfate for 4-28 days resulted in high amniotic fluid magnesium levels (10.54 mg% +/- 1.83 SD). In all cases the amniotic fluid magnesium level greatly exceeded the maternal serum level in a sample collected simultaneously. Additionally, when amniorrhexis and delivery occurred within one hour of each other, the fetal magnesium levels uniformly exceeded the maternal levels in paired maternal and cord blood samples. RP HANKINS, GDV (reprint author), WILFORD HALL USAF MED CTR,DEPT OBSTET & GYNECOL,OBSTET SERV,LACKLAND AFB,TX 78236, USA. NR 11 TC 18 Z9 18 U1 0 U2 0 PU SCI PRINTERS & PUBL INC PI ST LOUIS PA P.O. DRAWER 12425 8342 OLIVE BLVD, ST LOUIS, MO 63132 SN 0024-7758 J9 J REPROD MED JI J. Reprod. Med. PD JUN PY 1991 VL 36 IS 6 BP 446 EP 449 PG 4 WC Obstetrics & Gynecology SC Obstetrics & Gynecology GA FT047 UT WOS:A1991FT04700008 PM 1865401 ER PT J AU EMMELHAINZ, MA STOCK, JR EMMELHAINZ, LW AF EMMELHAINZ, MA STOCK, JR EMMELHAINZ, LW TI CONSUMER RESPONSES TO RETAIL STOCK-OUTS SO JOURNAL OF RETAILING LA English DT Editorial Material AB Responses to an in-store interview of consumers who experienced an out-of-stock on items removed from the grocery shelves by researchers indicated that 32 percent of consumers purchased a different brand, 41 percent purchased a different size or variety of the same brand, 13 percent delayed purchase, and 14 percent went to another store. Perceived product risk, urgency of need, and product usage were found to be factors in the decision to substitute. Repeat brand purchase patterns were not found to influence the decision to substitute but were found to influence the specific substitution made, if an item was substituted for the out-of-stock. In those cases where no substitution was made, store loyalty was found to influence the decision to delay the purchase or to go to another store. C1 UNIV S FLORIDA,TAMPA,FL 33620. USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433. RP EMMELHAINZ, MA (reprint author), UNIV DAYTON,DAYTON,OH 45469, USA. NR 5 TC 39 Z9 41 U1 3 U2 12 PU JOURNAL OF RETAILING PI HANOVER PA PO BOX 465, HANOVER, PA 17331 SN 0022-4359 J9 J RETAILING JI J. Retail. PD SUM PY 1991 VL 67 IS 2 BP 138 EP 147 PG 10 WC Business SC Business & Economics GA HG036 UT WOS:A1991HG03600002 ER PT J AU LAUNIUS, RD AF LAUNIUS, RD TI SALAMANDER - THE STORY OF THE MORMON FORGERY MURDERS - SILLITOE,L, ROBERTS,AD SO JOURNAL OF THE SOUTHWEST LA English DT Book Review RP LAUNIUS, RD (reprint author), MIL AIRLIFT COMMAND,SCOTT AFB,IL 62225, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU UNIV ARIZONA PI TUCSON PA LIBRARY C327, TUCSON, AZ 85721 SN 0004-1408 J9 J SOUTHWEST JI J. Southwest PD SUM PY 1991 VL 33 IS 2 BP 227 EP 242 PG 16 WC History SC History GA FU926 UT WOS:A1991FU92600015 ER PT J AU CICCOCIOPPO, MV AF CICCOCIOPPO, MV TI MEDICAL UNITS - WHO SHOULD COMMAND SO MILITARY MEDICINE LA English DT Letter RP CICCOCIOPPO, MV (reprint author), USAF,OFF AIR FORCE SURGEON GEN,WASHINGTON,DC 20330, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ASSN MILITARY SURG US PI BETHESDA PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 SN 0026-4075 J9 MIL MED JI Milit. Med. PD JUN PY 1991 VL 156 IS 6 BP A9 EP A9 PG 1 WC Medicine, General & Internal SC General & Internal Medicine GA FP778 UT WOS:A1991FP77800006 ER PT J AU HANKINS, GDV NOLAN, TE AF HANKINS, GDV NOLAN, TE TI ADULT RESPIRATORY-DISTRESS SYNDROME IN OBSTETRICS SO OBSTETRICS AND GYNECOLOGY CLINICS OF NORTH AMERICA LA English DT Article ID END-EXPIRATORY PRESSURE; TUMOR NECROSIS FACTOR; PULMONARY-ARTERY CATHETERIZATION; SURGICAL INTENSIVE-CARE; COMPLEMENT ACTIVATION; SEPTIC SHOCK; ALVEOLAR MACROPHAGES; FAILURE; NEUTROPHILS; RISK C1 MED COLL GEORGIA,DEPT OBSTET & GYNECOL,AUGUSTA,GA 30912. MED COLL GEORGIA,DEPT INTERNAL MED,AUGUSTA,GA 30912. RP HANKINS, GDV (reprint author), WILFORD HALL USAF MED CTR,DEPT OBSTET & GYNECOL,LACKLAND AFB,TX 78236, USA. NR 66 TC 12 Z9 12 U1 0 U2 0 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0889-8545 J9 OBSTET GYN CLIN N AM JI Obstet. Gynecol. Clin. N. Am. PD JUN PY 1991 VL 18 IS 2 BP 273 EP 287 PG 15 WC Obstetrics & Gynecology SC Obstetrics & Gynecology GA GP663 UT WOS:A1991GP66300008 PM 1945255 ER PT J AU BECK, DL ATKINS, JS BENECKE, JE BRACKMANN, DE AF BECK, DL ATKINS, JS BENECKE, JE BRACKMANN, DE TI INTRAOPERATIVE FACIAL-NERVE MONITORING - PROGNOSTIC ASPECTS DURING ACOUSTIC TUMOR REMOVAL SO OTOLARYNGOLOGY-HEAD AND NECK SURGERY LA English DT Article AB Intraoperative facial nerve monitoring with electrical stimulation (IFNMES) has become an integral part of acoustic tumor surgery. We reviewed the records of fifty-six patients who underwent translabyrinthine acoustic tumor removal with IFNMES. There was excellent correlation between intraoperative facial nerve activity and immediate post-operative facial nerve function (24 hours after surgery and at hospital discharge). Our data would suggest that patients who exhibit less than 500 microvolts of ongoing EMG activity during surgery, and who yield at least a 500-microvolt contraction when stimulated with 0.05 milliamps at the brainstem after tumor removal, can expect an excellent immediate facial nerve result (grade I or II). C1 ST LOUIS UNIV,MED CTR,DEPT OTOLARYNGOL HEAD & NECK SURG,ST LOUIS,MO 63103. USAF,WILFORD HALL MED CTR,HOUSE EAR CLIN,LOS ANGELES,CA. NR 8 TC 39 Z9 40 U1 0 U2 1 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0194-5998 J9 OTOLARYNG HEAD NECK JI Otolaryngol. Head Neck Surg. PD JUN PY 1991 VL 104 IS 6 BP 780 EP 782 PG 3 WC Otorhinolaryngology; Surgery SC Otorhinolaryngology; Surgery GA FQ301 UT WOS:A1991FQ30100002 PM 1908967 ER PT J AU KWARTLER, JA LUXFORD, WM ATKINS, J SHELTON, C AF KWARTLER, JA LUXFORD, WM ATKINS, J SHELTON, C TI FACIAL-NERVE MONITORING IN ACOUSTIC TUMOR SURGERY SO OTOLARYNGOLOGY-HEAD AND NECK SURGERY LA English DT Article ID CONSTANT-VOLTAGE STIMULATION; EMG; DISSECTION AB Anatomic and functional preservation of the facial nerve during acoustic tumor surgery remains a primary goal. Intraoperative electromyographic facial nerve monitoring with auditory feedback has enabled the surgeon to more readily achieve this goal. We compared a group of monitored translabyrinthine acoustic tumor removals (N = 89) to a similar unmonitored group (N = 155) in regard to facial nerve function. Function was assessed immediately postoperatively, at time of discharge, and at 1 year postoperatively using the House six-point scale. Results were grouped as satisfactory, intermediate, or poor and were analyzed by tumor size. Facial nerve results were better at all time intervals in the monitored groups, although the difference was not statistically significant at the 1-year interval. There was no difference between monitored and unmonitored patients in the subgroups with tumors smaller than 2.5 cm in diameter. This study supports the usefulness of intraoperative facial nerve monitoring in improving facial nerve results, particularly in larger tumors. C1 WILFORD HALL USAF MED CTR,SAN ANTONIO,TX. UNIV MED & DENT NEW JERSEY,NEW JERSEY MED SCH,DEPT OTOLARYNGOL,NEWARK,NJ 07103. HOUSE EAR CLIN,2122 W 3RD ST,LOS ANGELES,CA 90057. NR 12 TC 52 Z9 52 U1 0 U2 0 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0194-5998 J9 OTOLARYNG HEAD NECK JI Otolaryngol. Head Neck Surg. PD JUN PY 1991 VL 104 IS 6 BP 814 EP 817 PG 4 WC Otorhinolaryngology; Surgery SC Otorhinolaryngology; Surgery GA FQ301 UT WOS:A1991FQ30100008 PM 1908973 ER PT J AU THOMASSON, JR AF THOMASSON, JR TI SEDIMENT-BORNE SEEDS FROM SAND CREEK, NORTHWESTERN KANSAS - TAPHONOMIC SIGNIFICANCE AND PALEOECOLOGICAL AND PALEOENVIRONMENTAL IMPLICATIONS SO PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY LA English DT Article ID MIOCENE; LAKE; MACROFOSSILS; HISTORY; FRUITS; FLORAS; BASIN AB A study of seeds, fruits, and reproductive bracts (collectively "seeds") collected during 1986-1988 from recent sediments along a small, perennial stream in northwestern Kansas was conducted to determine the taphonomic significance of sediment-borne "seeds" and the implications for studies of similar accumulations of fossil plants. The samples were collected from sediments in, but at the margin, of a flowing stream. The abundant and diverse assemblage of aquatic and marginal-aquatic plants recovered in the sediments shows that the sediment-borne "seeds" accurately reflect the marginal-aquatic habitat next to the channel and temperate climate of the region. The sediments also contained a wide assortment of other taxa that represented native riparian, floodplain, and upland habitats, as well as cultivated croplands; overall these taxa are indicative of temperate grasslands. Disturbance of the study site by trampling by livestock, and perhaps by lowered stream flow during the last year, reduced the variety of taxa and numbers of specimens in samples, but these influences did not change the marginal-aquatic habitat suggested by sediment-borne "seeds". Comparison of a late Miocene (7-8 m.y. B.P.) assemblage of "seeds" from the Minium Quarry in northwestern Kansas with the Sand Creek results suggests that the habitat nearest the deposition site of the fossils was a marginal-aquatic setting similar to that at Sand Creek. The comparison also suggests that the Miocene landscape beyond the depositional site was dominated by warm temperate to subtropical grasslands, an interpretation supported by faunal evidence. C1 USAF ACAD,DEPT BIOL,HQUSAFA,DFB,COLORADO SPRINGS,CO 80840. NR 41 TC 13 Z9 13 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0031-0182 J9 PALAEOGEOGR PALAEOCL JI Paleogeogr. Paleoclimatol. Paleoecol. PD JUN PY 1991 VL 85 IS 3-4 BP 213 EP 225 DI 10.1016/0031-0182(91)90161-J PG 13 WC Geography, Physical; Geosciences, Multidisciplinary; Paleontology SC Physical Geography; Geology; Paleontology GA GA448 UT WOS:A1991GA44800007 ER PT J AU OTTOLINI, MG ASCHER, DP CIESLAK, TJ MODICALUCERO, S AF OTTOLINI, MG ASCHER, DP CIESLAK, TJ MODICALUCERO, S TI PNEUMOCOCCAL BACTEREMIA DURING ORAL TREATMENT WITH CEFIXIME FOR OTITIS-MEDIA SO PEDIATRIC INFECTIOUS DISEASE JOURNAL LA English DT Note DE BACTEREMIA; PNEUMOCOCCUS; CEFIXIME ID AMOXICILLIN; RESISTANT; PENICILLIN; CHILDREN; TRIAL C1 USAF,MALCOLM GROW MED CTR,DEPT PEDIAT,WASHINGTON,DC. RP OTTOLINI, MG (reprint author), UNIFORMED SERV UNIV HLTH SCI,DEPT PEDIAT,4301 JONES BRIDGE RD,BETHESDA,MD 20814, USA. NR 10 TC 16 Z9 16 U1 0 U2 0 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0891-3668 J9 PEDIATR INFECT DIS J JI Pediatr. Infect. Dis. J. PD JUN PY 1991 VL 10 IS 6 BP 467 EP 468 DI 10.1097/00006454-199106000-00011 PG 2 WC Immunology; Infectious Diseases; Pediatrics SC Immunology; Infectious Diseases; Pediatrics GA FQ026 UT WOS:A1991FQ02600011 PM 1852543 ER PT J AU REE, MJ EARLES, JA AF REE, MJ EARLES, JA TI PREDICTING TRAINING SUCCESS - NOT MUCH MORE THAN G SO PERSONNEL PSYCHOLOGY LA English DT Article ID GENERAL ABILITY; VALIDITY RP REE, MJ (reprint author), USAF,HRMA,HUMAN RESOURCES DIRECTORATE,ARMSTRONG LAB,BROOKS AFB,TX 78235, USA. NR 31 TC 182 Z9 185 U1 0 U2 7 PU PERSONNEL PSYCHOLOGY INC PI BOWLING GREEN PA 745 HASKINS ROAD, SUITE A, BOWLING GREEN, OH 43402 SN 0031-5826 J9 PERS PSYCHOL JI Pers. Psychol. PD SUM PY 1991 VL 44 IS 2 BP 321 EP 332 PG 12 WC Psychology, Applied; Management SC Psychology; Business & Economics GA FR506 UT WOS:A1991FR50600004 ER PT J AU SUTER, BW AF SUTER, BW TI FOUNDATIONS OF HANKEL TRANSFORM ALGORITHMS SO QUARTERLY OF APPLIED MATHEMATICS LA English DT Article ID FOURIER-BESSEL TRANSFORM; NUMERICAL-INTEGRATION; COMPUTATION AB A brief survey of existing Hankel (Fourier-Bessel) transform algorithms is presented along with a natural way to classify these algorithms. In several cases these algorithms were derived originally by methods that were unnecessarily complicated and not sufficiently general. By using operator notation and Radon transform methods, derivations and generalizations are straightforward. These improvements and generalizations are given at the appropriate places in the discussion. RP USAF, INST TECHNOL, WRIGHT PATTERSON AFB, OH 45433 USA. NR 47 TC 4 Z9 4 U1 0 U2 0 PU BROWN UNIV PI BOSTON PA AMER MATH SOC, PO BOX 845904, BOSTON, MA 02284-5904 USA SN 0033-569X EI 1552-4485 J9 Q APPL MATH JI Q. Appl. Math. PD JUN PY 1991 VL 49 IS 2 BP 267 EP 279 PG 13 WC Mathematics, Applied SC Mathematics GA FP205 UT WOS:A1991FP20500005 ER PT J AU OSTERICHER, R LALLY, KP BARRETT, DM RITCHEY, ML AF OSTERICHER, R LALLY, KP BARRETT, DM RITCHEY, ML TI ANASTOMOTIC OBSTRUCTION AFTER STAPLED ENTEROANASTOMOSIS SO SURGERY LA English DT Note AB We have recently treated two cases of anastomotic obstruction after side-to-side stapled enteroanastomosis. Complete obstruction of a stapled small-bowel anastomosis has not been reported to our knowledge. The mechanism of the obstruction appears to be the healing together of the cut edges of viable bowel beyond the inverted stapled lines. An alternative method of constructing the functional end-to-end enteroanastomosis that is offered is intended to prevent the occurrence of postoperative anastomotic obstruction. C1 WILFORD HALL USAF MED CTR,DEPT SURG,SGHSG,LACKLAND AFB,TX 78236. WILFORD HALL USAF MED CTR,DEPT UROL,LACKLAND AFB,TX 78236. UNIFORMED SERV UNIV HLTH SCI,BETHESDA,MD 20814. MAYO CLIN & MAYO FDN,DEPT UROL,ROCHESTER,MN 55905. NR 8 TC 6 Z9 6 U1 0 U2 0 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0039-6060 J9 SURGERY JI Surgery PD JUN PY 1991 VL 109 IS 6 BP 799 EP 801 PG 3 WC Surgery SC Surgery GA FQ372 UT WOS:A1991FQ37200018 PM 2042101 ER PT J AU MALE, JW MORIARTY, JB STEVENS, TH WILLIS, CE AF MALE, JW MORIARTY, JB STEVENS, TH WILLIS, CE TI WATER-SUPPLY COSTS FOR SMALL PRIVATE UTILITIES SO WATER RESOURCES BULLETIN LA English DT Article DE WATER PRICING; WATER SUPPLY; WATER COST; ECONOMICS AB This paper examines the cost of water supply for small and mid-sized private water utilities. An econometric approach was employed in which data on utility costs and characteristics were used to estimate a total water supply cost function from which average and marginal costs were derived. The results suggest that although average and marginal costs decline with output, the rate of decline rapidly approaches zero, and unit costs therefore appear to remain relatively constant over a wide range of output. Implications of the results for pricing policy are examined. C1 USAF,WESTOVER,MA 01022. UNIV MASSACHUSETTS,DEPT RESOURCE ECON,AMHERST,MA 01003. RP MALE, JW (reprint author), UNIV MASSACHUSETTS,DEPT CIVIL ENGN,AMHERST,MA 01003, USA. NR 18 TC 0 Z9 1 U1 0 U2 3 PU AMER WATER RESOURCES ASSOC PI HERNDON PA 950 HERNDON PARKWAY SUITE 300, HERNDON, VA 22070-5528 SN 0043-1370 J9 WATER RESOUR BULL JI Water Resour. Bull. PD JUN PY 1991 VL 27 IS 3 BP 521 EP 526 PG 6 WC Engineering, Civil; Geosciences, Multidisciplinary; Water Resources SC Engineering; Geology; Water Resources GA GR495 UT WOS:A1991GR49500017 ER PT J AU SANDLER, DG BARRETT, TK PALMER, DA FUGATE, RQ WILD, WJ AF SANDLER, DG BARRETT, TK PALMER, DA FUGATE, RQ WILD, WJ TI USE OF A NEURAL NETWORK TO CONTROL AN ADAPTIVE OPTICS SYSTEM FOR AN ASTRONOMICAL TELESCOPE SO NATURE LA English DT Article AB ANGEL et al. 1 recently showed how an artificial neural network could be used to measure optical phase distortion induced by atmospheric turbulence, and demonstrated by numerical simulation that such a system could be used to control the six 1.8-m mirrors of the Multiple Mirror Telescope by constantly adjusting them to compensate for atmospheric distortion of the image. The neural network estimates the phase distortion using two images of a reference star, or of a laser-produced guide star 2, one image being at the best focus of the telescope while the other is intentionally out of focus. Here we report the successful test of a neural network with a real star. We applied a neural network to in- and out-of-focus images of Vega obtained with the 1.5-m single-mirror telescope at the Starfire Optical Range of the Air Force Phillips Laboratory near Albuquerque, New Mexico. The experimental results agree well with phase reconstructions obtained simultaneously with a conventional wave-front sensor. C1 USAF,PHILLIPS LAB,STARFIRE OPT RANGE,ALBUQUERQUE,NM 87117. RP SANDLER, DG (reprint author), THERMO ELECTRON TECHNOL,9550 DISTRIBUT AVE,SAN DIEGO,CA 92121, USA. NR 13 TC 31 Z9 31 U1 1 U2 5 PU MACMILLAN MAGAZINES LTD PI LONDON PA 4 LITTLE ESSEX STREET, LONDON, ENGLAND WC2R 3LF SN 0028-0836 J9 NATURE JI Nature PD MAY 23 PY 1991 VL 351 IS 6324 BP 300 EP 302 DI 10.1038/351300a0 PG 3 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA FM976 UT WOS:A1991FM97600053 ER PT J AU WINDUS, TL GORDON, MS BURGGRAF, LW DAVIS, LP AF WINDUS, TL GORDON, MS BURGGRAF, LW DAVIS, LP TI A NEW TWIST ON PSEUDOROTATION SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Note ID MOLECULAR-ORBITAL APPROACH; NUCLEOPHILIC-SUBSTITUTION; SILICON; ABINITIO; ENERGY; SIH5 C1 N DAKOTA STATE UNIV, FARGO, ND 58105 USA. USAF, OFF SCI RES, DIRECTORATE CHEM & ATMOSPHER SCI, BOLLING AFB, WASHINGTON, DC 20332 USA. HQAFSC XTR, WASHINGTON, DC 20334 USA. NR 21 TC 45 Z9 45 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD MAY 22 PY 1991 VL 113 IS 11 BP 4356 EP 4357 DI 10.1021/ja00011a063 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA FN005 UT WOS:A1991FN00500063 ER PT J AU LO, I MITCHEL, WC PERRIN, RE MESSHAM, RL YEN, MY AF LO, I MITCHEL, WC PERRIN, RE MESSHAM, RL YEN, MY TI 2-DIMENSIONAL ELECTRON-GAS IN GAAS/AL1-XGAXAS HETEROSTRUCTURES - EFFECTIVE MASS SO PHYSICAL REVIEW B LA English DT Article ID INTERSUBBAND SCATTERING AB We have measured the Shubnikov-de Haas (SdH) effect in the high-mobility GaAs/Al1-xGaxAs heterostructures of a two-subband populated two-dimensional electron gas. The carrier concentrations of first and second subbands were determined by the two-frequency SdH oscillations. Both carrier concentrations increased after the persistent photoconductivity effect, and the increments agreed with Smith's results and Ando's calculation. The effective masses for both subbands at the Fermi levels of 29.1 and 2.3 meV, evaluated from the temperature dependence of SdH amplitudes, were(0.066 +/- 0.001)m0 and (0.067 +/- 0.001)m0. Comparing with the band-edge mass, we found, quantitatively, that the nonparabolic band effect in the region near the minimum of the conduction band is insignificant. C1 WESTINGHOUSE ELECT CORP,CTR SCI & TECHNOL,PITTSBURGH,PA 15235. UNIV DAYTON,RES INST,DAYTON,OH 45469. RP LO, I (reprint author), USAF,WRIGHT RES & DEV CTR,MLPO,WRIGHT PATTERSON AFB,OH 45433, USA. NR 9 TC 25 Z9 25 U1 1 U2 4 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD MAY 15 PY 1991 VL 43 IS 14 BP 11787 EP 11790 DI 10.1103/PhysRevB.43.11787 PG 4 WC Physics, Condensed Matter SC Physics GA FM463 UT WOS:A1991FM46300026 ER PT J AU ROACH, WP CHANDRASEKHAR, M CHANDRASEKHAR, HR CHAMBERS, FA AF ROACH, WP CHANDRASEKHAR, M CHANDRASEKHAR, HR CHAMBERS, FA TI DEEP CENTER IN AL0.3GA0.7AS SO PHYSICAL REVIEW B LA English DT Note ID SI-DOPED ALXGA1-XAS; DX-CENTER; PRESSURE-DEPENDENCE; HYDROSTATIC-PRESSURE; PHOTO-LUMINESCENCE; GAAS-SI; PHOTOLUMINESCENCE; CAPTURE; ALLOYS AB We report the observation of a new trapping center in Al0.3Ga0.7As. The center becomes active under a hydrostatic pressure of approximately 45 kbar, and has an unusually deep emission barrier. It quenches all radiative transitions and causes a hysteresis in the photoluminescence intensity, which we interpret via a lattice relaxation model. It is neither the DX nor the SD center, and is probably related to a donor. C1 AMOCO TECHNOL CORP,NAPERVILLE,IL 60566. USAF,SAM,RZV,BROOKS AFB,TX 78235. RP ROACH, WP (reprint author), UNIV MISSOURI,DEPT PHYS & ASTRON,COLUMBIA,MO 65211, USA. NR 23 TC 3 Z9 3 U1 1 U2 2 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD MAY 15 PY 1991 VL 43 IS 14 BP 12126 EP 12129 DI 10.1103/PhysRevB.43.12126 PG 4 WC Physics, Condensed Matter SC Physics GA FM463 UT WOS:A1991FM46300085 ER PT J AU VIGGIANO, AA MORRIS, RA DEAKYNE, CA DALE, F PAULSON, JF AF VIGGIANO, AA MORRIS, RA DEAKYNE, CA DALE, F PAULSON, JF TI EFFECTS OF HYDRATION ON REACTIONS OF O-(H2O)N(N=0-2) .2. REACTIONS WITH H-2 AND D-2 SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article ID GAS-PHASE ION; ASSOCIATIVE DETACHMENT; MOLECULE REACTIONS; HYDROGEN; CO AB The rate constants for the reactions of O-(H2O)n (n = 0-2) with H2 and D2 have been measured as a function of temperature. In addition, the dependences of the rate constants on average center-of-mass kinetic energy () and the branching ratios for n = 0 have been measured at several temperatures. For n = 0, the reactions with H2 and D2 are 48% and 50% efficient, respectively, and depend only weakly on temperature and . Both associative detachment and a channel that produces OH- are observed. The minor ( < 15%) OH- channel becomes more important at higher temperatures and . One H2O ligand reduces the rate constants on the order of a factor of 50. The reaction pathways for n = 1 are approximately 90% associative detachment and 10% production of OH-(H2O). The rate constants for n = 1 are found to increase with increasing temperature. The second H2O ligand reduces the rates to below our detectable limit. No dependence on rotational energy was found in either the rate constant or the branching ratio for n = 0. RP VIGGIANO, AA (reprint author), USAF,DIV IONOSPHER PHYS,GEOPHYS LAB,BEDFORD,MA 01731, USA. NR 31 TC 16 Z9 16 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0022-3654 J9 J PHYS CHEM-US JI J. Phys. Chem. PD MAY 2 PY 1991 VL 95 IS 9 BP 3644 EP 3647 DI 10.1021/j100162a039 PG 4 WC Chemistry, Physical SC Chemistry GA FK322 UT WOS:A1991FK32200039 ER PT J AU GORDNIER, RE RUBIN, SG AF GORDNIER, RE RUBIN, SG TI 3-DIMENSIONAL COMPOSITE VELOCITY SOLUTIONS FOR SUBSONIC TRANSONIC FLOW SO AIAA JOURNAL LA English DT Article ID EQUATIONS AB A composite velocity procedure for the three-dimensional reduced Navier-Stokes equations is developed. In the spirit of matched asymptotic expansions, the velocity components are written as a combined multiplicative and additive composite of viscous like velocities (U, W) and pseudopotential or inviscid velocities (PHI-x, PHI-y, PHI-z). The solution procedure is then consistent with both asymptotic inviscid flow and boundary-layer theory. For transonic flow cases, the Enquist-Osher flux-biasing scheme developed for the full potential equation is used. A quasiconservation form of the governing equations is used in the shock region to capture the correct rotational behavior. This is combined with the standard nonconservation, non-entropy-generating form used in nonshock regions. The consistent strongly implicit procedure is coupled with plane relaxation to solve the discretized equations. The composite velocity procedure is applied to the solution of three-dimensional afterbody problems. C1 UNIV CINCINNATI,DEPT AEROSP ENGN & ENGN MECH,CINCINNATI,OH 45221. RP GORDNIER, RE (reprint author), WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433, USA. NR 20 TC 1 Z9 1 U1 1 U2 1 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0001-1452 J9 AIAA J JI AIAA J. PD MAY PY 1991 VL 29 IS 5 BP 750 EP 757 DI 10.2514/3.10650 PG 8 WC Engineering, Aerospace SC Engineering GA FM533 UT WOS:A1991FM53300017 ER PT J AU DANIELS, JA PALAZOTTO, AN SANDHU, RS AF DANIELS, JA PALAZOTTO, AN SANDHU, RS TI FAILURE CHARACTERISTICS IN THERMOPLASTIC COMPOSITE LAMINATES DUE TO AN ECCENTRIC CIRCULAR DISCONTINUITY SO AIAA JOURNAL LA English DT Article AB Experimental and analytical studies were conducted to observe the failure characteristics of Gr/PEEK specimens containing an eccentric 0.4-in.-diam circular discontinuity. Specimens were loaded in axial tension at room temperature. The stacking sequences considered were [0 deg16], [90 deg16], [+/- 45 deg]4s, and [0/ +/- 45/90]2s. For each stacking sequence, three values of eccentricity were considered (values of eccentricity were determined by hole location within each specimen). A nonlinear finite element program was used for the analytical portion of this study. The nonlinear finite element analysis accounted for material nonlinearity only. To verify the predictions of the analytical study, experimentation was conducted. The effects of boundary conditions on the failure modes of the given laminates were examined through the use of a mounting fixture that allowed in-plane rotation of the specimens. Finally, photoelasticity was used to verify the ''gross'' states of strain predicted by the analytical study. There was good correlation between the analytical predictions of failure and the experimental data; however, for the [+/- 45 deg]4s laminates, the analytical predictions were found to underestimate the experimental failure loads. The analytical study predicted that slightly lower failure loads would result from the use of the mounting fixture. Although limited testing was done using the mounting fixture, experimentation did verify slightly lower failure loads for the [0 deg16] and [0/ +/- 45/90]2s laminates when the mounting fixture was used. Finally, there was good correlation between the analytical predictions of the gross strain states and the actual strain states noted during photoelastic testing. C1 WRIGHT RES & DEV CTR,STRUCT CONCEPTS BRANCH,DIV STRUCT,WRIGHT PATTERSON AFB,OH 45433. RP DANIELS, JA (reprint author), USAF,SCH ENGN,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433, USA. NR 5 TC 3 Z9 3 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0001-1452 J9 AIAA J JI AIAA J. PD MAY PY 1991 VL 29 IS 5 BP 830 EP 837 DI 10.2514/3.10663 PG 8 WC Engineering, Aerospace SC Engineering GA FM533 UT WOS:A1991FM53300030 ER PT J AU EMMETT, M SIRMON, MD KIRKPATRICK, WG NOLAN, CR SCHMITT, GW CLEVELAND, MV AF EMMETT, M SIRMON, MD KIRKPATRICK, WG NOLAN, CR SCHMITT, GW CLEVELAND, MV TI CALCIUM ACETATE CONTROL OF SERUM PHOSPHORUS IN HEMODIALYSIS-PATIENTS SO AMERICAN JOURNAL OF KIDNEY DISEASES LA English DT Article DE CALCIUM ACETATE; HYPERPHOSPHATEMIA; RENAL OSTEODYSTROPHY; PHOSPHORUS BINDERS; ALUMINUM ID CHRONIC RENAL-FAILURE; PHOSPHATE BINDER; DIETARY PHOSPHORUS; CARBONATE; ABSORPTION; DIALYSATE; CALCIPHYLAXIS; CITRATE C1 DALLAS KIDNEY DIS CTR,DALLAS,TX. UNIV SO ALABAMA,MED CTR,DIV NEPHROL,MOBILE,AL 36688. WILFORD HALL USAF MED CTR,NEPHROL SERV,LACKLAND AFB,TX 78236. VET ADM MED CTR JAMAICA PLAIN,DIV NEPHROL,BOSTON,MA 02130. BRAINTREE LAB,BRAINTREE,MA. RP EMMETT, M (reprint author), BAYLOR UNIV,MED CTR,DIV NEPHROL METAB,3500 GASTON,DALLAS,TX 75246, USA. NR 23 TC 77 Z9 79 U1 0 U2 2 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0272-6386 J9 AM J KIDNEY DIS JI Am. J. Kidney Dis. PD MAY PY 1991 VL 17 IS 5 BP 544 EP 550 PG 7 WC Urology & Nephrology SC Urology & Nephrology GA FL106 UT WOS:A1991FL10600007 PM 2024656 ER PT J AU HANKINS, GDV SNYDER, RR YEOMANS, ER AF HANKINS, GDV SNYDER, RR YEOMANS, ER TI UMBILICAL ARTERIAL AND VENOUS ACID-BASE AND BLOOD-GAS VALUES AND THE EFFECT OF CHORIOAMNIONITIS ON THOSE VALUES IN A COHORT OF PRETERM INFANTS SO AMERICAN JOURNAL OF OBSTETRICS AND GYNECOLOGY LA English DT Article DE APGAR SCORES; CHORIOAMNIONITIS; CORD ACID-BASE STATUS; PRETERM ID PH AB Umbilical arterial and venous acid-base and blood gas values in uncomplicated premature birth are similar to values that are reported in term infants and are unaffected by birth weight or gestational age. In this group of patients chorioamnionitis had no significant effects on umbilical arterial acid-base or blood gas values or on the percentage of patients that were born with acidemia. Apgar scores were significantly lower in the group with choriamnionitis in spite of a virtual absence of acidemia, which again suggests that low Apgar scores alone do not confirm a diagnosis of birth asphyxia. RP HANKINS, GDV (reprint author), WILFORD HALL USAF MED CTR,DEPT OBSTET & GYNECOL,SGHO,LACKLAND AFB,TX 78236, USA. NR 8 TC 12 Z9 12 U1 0 U2 0 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0002-9378 J9 AM J OBSTET GYNECOL JI Am. J. Obstet. Gynecol. PD MAY PY 1991 VL 164 IS 5 BP 1261 EP 1264 PN 1 PG 4 WC Obstetrics & Gynecology SC Obstetrics & Gynecology GA FM348 UT WOS:A1991FM34800022 PM 1903592 ER PT J AU SYMS, CA AF SYMS, CA TI FLYING AFTER OTOLOGIC SURGERY SO AMERICAN JOURNAL OF OTOLOGY LA English DT Editorial Material RP SYMS, CA (reprint author), WILFORD HALL USAF MED CTR,DEPT OTOLARYNGOLOGY HEAD & NECK SURG,SAN ANTONIO,TX, USA. NR 3 TC 1 Z9 1 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 0192-9763 J9 AM J OTOL JI Am. J. Otol. PD MAY PY 1991 VL 12 IS 3 BP 162 EP 162 PG 1 WC Otorhinolaryngology SC Otorhinolaryngology GA FL304 UT WOS:A1991FL30400001 PM 1882961 ER PT J AU MIRENDA, JV GRISSOM, TE AF MIRENDA, JV GRISSOM, TE TI ANESTHETIC IMPLICATIONS OF THE RENIN-ANGIOTENSIN SYSTEM AND ANGIOTENSIN-CONVERTING ENZYME-INHIBITORS SO ANESTHESIA AND ANALGESIA LA English DT Review DE HORMONES, RENIN-ANGIOTENSIN; POLYPEPTIDES, RENIN-ANGIOTENSIN; ENZYMES, ANGIOTENSIN-CONVERTING; PHARMACOLOGY, INHIBITORS OF ANGIOTENSIN-CONVERTING ENZYME ID CONGESTIVE HEART-FAILURE; RENAL-ARTERY STENOSIS; DESCENDING THORACIC AORTA; CORONARY-BYPASS SURGERY; ANTI-INFLAMMATORY DRUGS; MESSENGER-RNA SEQUENCES; BLOOD-PRESSURE; DOUBLE-BLIND; INTRAVENOUS ENALAPRILAT; SODIUM-NITROPRUSSIDE RP MIRENDA, JV (reprint author), WILFORD HALL USAF MED CTR,DEPT ANESTHESIOL,LACKLAND AFB,TX 78236, USA. NR 153 TC 36 Z9 37 U1 0 U2 0 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0003-2999 J9 ANESTH ANALG JI Anesth. Analg. PD MAY PY 1991 VL 72 IS 5 BP 667 EP 683 PG 17 WC Anesthesiology SC Anesthesiology GA FH753 UT WOS:A1991FH75300017 PM 2018225 ER PT J AU ROMANOFF, ME ELLIS, JS AF ROMANOFF, ME ELLIS, JS TI MYOFASCIAL PAIN SYNDROME CAN CAUSE RIGHT UPPER QUADRANT PAIN SO ANESTHESIOLOGY LA English DT Letter C1 WILFORD HALL USAF MED CTR,DEPT ANESTHESIOL,CLIN ANESTHESIA SERV,LACKLAND AFB,TX 78236. RP ROMANOFF, ME (reprint author), WILFORD HALL USAF MED CTR,PAIN MANAGEMENT CLIN,LACKLAND AFB,TX 78236, USA. NR 5 TC 0 Z9 0 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 0003-3022 J9 ANESTHESIOLOGY JI Anesthesiology PD MAY PY 1991 VL 74 IS 5 BP 955 EP 956 DI 10.1097/00000542-199105000-00032 PG 2 WC Anesthesiology SC Anesthesiology GA FJ905 UT WOS:A1991FJ90500032 PM 2064680 ER PT J AU BECK, DE DIPALMA, JA AF BECK, DE DIPALMA, JA TI A NEW ORAL LAVAGE SOLUTION VS CATHARTICS AND ENEMA METHOD FOR PREOPERATIVE COLONIC CLEANSING SO ARCHIVES OF SURGERY LA English DT Article ID MECHANICAL BOWEL PREPARATION; WHOLE-GUT LAVAGE; CLINICAL-TRIAL; SURGERY; OPERATIONS; MANNITOL AB Sulfate free-electrolyte lavage solution is a new osmotically balanced electrolyte gut lavage solution for colon surgery that has been formulated for improved taste and reduced water and electrolyte changes. Sixty patients were prospectively randomized to receive a 1-day preparation with sulfate free-electrolyte lavage solution or a 3-day preparation using a clear liquid diet, cathartics, and enemas. The patient groups were similar in age, race, male-female ratio, and the types of colonic resections performed. Colonic cleansing was better with sulfate free-electrolyte lavage solution (100% vs 63% "good" to "excellent" cleansing). Patient tolerance evaluated by a questionnaire showed more overall discomfort with sulfate free-electrolyte lavage solution but no difference between the preparations in individual symptoms of fullness, crampig, nausea, or vomiting. One patient developed a low level of serum potassium after a cathartic and enema preparation, while there were no complications with sulfate free-electrolyte lavage solution. Patient taste questionnaires showed a slight preference for sulfate free-electrolyte lavage solution (53%) over a polyethylene glycol electrolyte lavage solution (47%). This study confirms that sulfate free-electrolyte lavage solution is a safe and effective method of preoperative colonic cleansing. C1 UNIV SO ALABAMA,COLL MED,DIV GASTROENTEROL,MOBILE,AL 36688. RP BECK, DE (reprint author), WILFORD HALL USAF MED CTR,DEPT GEN SURG,COLORECTAL SURG SERV,LACKLAND AFB,TX 78236, USA. RI Beck, David/A-5503-2011 NR 24 TC 10 Z9 10 U1 0 U2 0 PU AMER MEDICAL ASSOC PI CHICAGO PA 515 N STATE ST, CHICAGO, IL 60610 SN 0004-0010 J9 ARCH SURG-CHICAGO JI Arch. Surg. PD MAY PY 1991 VL 126 IS 5 BP 552 EP 555 PG 4 WC Surgery SC Surgery GA FK713 UT WOS:A1991FK71300003 PM 2021332 ER PT J AU RUSSELL, IJ FLETCHER, EM MICHALEK, JE MCBROOM, PC HESTER, GG AF RUSSELL, IJ FLETCHER, EM MICHALEK, JE MCBROOM, PC HESTER, GG TI TREATMENT OF PRIMARY FIBROSITIS FIBROMYALGIA SYNDROME WITH IBUPROFEN AND ALPRAZOLAM - A DOUBLE-BLIND, PLACEBO-CONTROLLED STUDY SO ARTHRITIS AND RHEUMATISM LA English DT Article ID CLINICAL CHARACTERISTICS; SECONDARY FIBROSITIS; RHEUMATOID-ARTHRITIS; CONTROLLED TRIAL; PAIN; PREVALENCE; QUESTIONNAIRE; SYMPTOMS; CRITERIA; DISEASE AB A multidimensional evaluation of 78 patients with primary fibrositis/fibromyalgia syndrome (PFS) revealed no significant relationship between clinical measures of physical discomfort and psychological measures. This observation provided evidence against the notion that the pain of PFS has a psychological etiology. The same patients were randomized into 4 groups for treatment with ibuprofen and/or alprazolam in a randomized, double-blind, double-dummy, placebo-controlled pilot trial. Clinical improvement in patient rating of disease severity and in the severity of tenderness upon palpation was most apparent in the subgroup of patients who were receiving both ibuprofen and alprazolam. An 8-week, open-label study in which 52 patients received both drugs further documented improvement in outcome measures. These data indicate that treatment with a combination of ibuprofen and alprazolam can be beneficial for some patients with PFS. C1 UNIV TEXAS,HLTH SCI CTR,DEPT PHYS MED & REHABIL,SAN ANTONIO,TX 78284. USAF,ARMSTRONG LAB,DIV EPIDEMIOL RES,BROOKS AFB,TX 78235. RP RUSSELL, IJ (reprint author), UNIV TEXAS,HLTH SCI CTR,DEPT MED,DIV CLIN IMMUNOL,7703 FLOYD CURL DR,SAN ANTONIO,TX 78284, USA. NR 39 TC 120 Z9 121 U1 1 U2 1 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 0004-3591 J9 ARTHRITIS RHEUM JI Arthritis Rheum. PD MAY PY 1991 VL 34 IS 5 BP 552 EP 560 DI 10.1002/art.1780340507 PG 9 WC Rheumatology SC Rheumatology GA FL399 UT WOS:A1991FL39900006 PM 2025309 ER PT J AU DOYLE, J WELLMAN, MP AF DOYLE, J WELLMAN, MP TI IMPEDIMENTS TO UNIVERSAL PREFERENCE-BASED DEFAULT THEORIES SO ARTIFICIAL INTELLIGENCE LA English DT Article ID NONMONOTONIC LOGIC; CIRCUMSCRIPTION AB Research on nonmonotonic and default reasoning has identified several important criteria for preferring alternative default inferences. The theories of reasoning based on each of these criteria may uniformly be viewed as theories of rational inference, in which the reasoner selects maximally preferred states of belief. Though researchers have noted some cases of apparent conflict between the preferences supported by different theories, it has been hoped that these special theories of reasoning may be combined into a universal logic of nonmonotonic reasoning. We show that the different categories of preferences conflict more than has been realized, and adapt formal results from social choice theory to prove that every universal theory of default reasoning will violate at least one reasonable principle of rational reasoning. Our results can be interpreted as demonstrating that, within the preferential framework, we cannot expect much improvement on the rigid lexicographic priority mechanisms that have been proposed for conflict resolution. C1 WRIGHT LAB, ARTIFICIAL INTELLIGENCE, WL-AAA-1, WRIGHT PATTERSON AFB, OH 45433 USA. RP MIT, COMP SCI LAB, 545 TECHNOL SQ, CAMBRIDGE, MA 02139 USA. NR 63 TC 25 Z9 25 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0004-3702 EI 1872-7921 J9 ARTIF INTELL JI Artif. Intell. PD MAY PY 1991 VL 49 IS 1-3 BP 97 EP 128 DI 10.1016/0004-3702(91)90007-7 PG 32 WC Computer Science, Artificial Intelligence SC Computer Science GA FV154 UT WOS:A1991FV15400005 ER PT J AU RUSH, WL WIRJOSEMITO, SA AF RUSH, WL WIRJOSEMITO, SA TI DECOMPRESSION-SICKNESS - RISK-FACTORS AND THE MONOPLACE CHAMBER - A CASE-REPORT SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article AB Discussions regarding the use of monoplace chambers for the treatment of decompression sickness (DCS) have continued for some time. Recently the role of these chambers has been reviewed by Kindwall (12) and critiqued by Moon (13). Various principles and concerns presented in their articles are illustrated by this case presentation of type II (serious) DCS with pulmonary and neurologic manifestations. Closely timed recurrent altitude exposure is discussed as a risk factor for DCS. Also, a newly defined risk factor (menstrual phase) is considered relevant to this case. Finally, we recommend that arrangements be made early in the management of DCS cases for transfer to a chamber which can provide definitive therapy. RP RUSH, WL (reprint author), USAF,MED CTR,DEPT HYPERBAR MED,MED OPERAT,WRIGHT PATTERSON AFB,OH 45433, USA. NR 19 TC 1 Z9 1 U1 0 U2 0 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD MAY PY 1991 VL 62 IS 5 BP 414 EP 417 PG 4 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA FJ997 UT WOS:A1991FJ99700006 PM 2053905 ER PT J AU LYONS, TJ FRENCH, J AF LYONS, TJ FRENCH, J TI MODAFINIL - THE UNIQUE PROPERTIES OF A NEW STIMULANT SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Note AB Modafinil, a novel stimulant which has several remarkable features that distinguish it from other stimulants, has been developed by Lafon, a French pharmaceutical company. Unlike the amphetamines, for example, modafinil is reported to have minimal peripheral side effects at therapeutic doses. It also appears to have a low abuse potential, does not interfere with normal sleep, and does not seem to produce tolerance. It improves vigilance especially in sleep-deprived subjects. It has been used clinically for up to 3 years in the treatment of narcolepsy and idiopathic hypersomnia. It could be an ideal replacement for amphetamine in short-term operations in which fatigue might threaten the successful completion of a mission. We recommend that military laboratories experienced in studying sustained performance include modafinil or perhaps a more selective alpha 1 receptor agonist in their investigations. C1 USAF,SCH AEROSP MED,BROOKS AFB,TX 78235. RP LYONS, TJ (reprint author), USAF,DIV HUMAN SYST,HG HSD XAPM,BROOKS AFB,TX 78235, USA. NR 31 TC 58 Z9 59 U1 2 U2 3 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD MAY PY 1991 VL 62 IS 5 BP 432 EP 435 PG 4 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA FJ997 UT WOS:A1991FJ99700010 PM 1675850 ER PT J AU LENIHAN, DJ ZEMAN, HS COLLINS, GJ AF LENIHAN, DJ ZEMAN, HS COLLINS, GJ TI LEFT MAIN CORONARY-ARTERY ANEURYSM IN ASSOCIATION WITH SEVERE ATHEROSCLEROSIS - A CASE-REPORT AND REVIEW OF THE LITERATURE SO CATHETERIZATION AND CARDIOVASCULAR DIAGNOSIS LA English DT Review DE ANGIOGRAM; CONGENITAL; CORONARY ARTERY BYPASS GRAFTING ID MYOCARDIAL-INFARCTION AB Aneurysms of the coronary arteries occur in from 0.3% to 4.9% of angiograms. Only 12 cases of left main artery (LMA) aneurysms have been reported. Of these, seven were associated with atherosclerosis in patients more than 56 years old. This report details the case of a 39-year-old patient with a large LMA aneurysm associated with atherosclerosis. C1 USAF,MED CTR WRIGHT PATTERSON,DEPT CARDIOL,WRIGHT PATTERSON AFB,OH 45433. NR 11 TC 40 Z9 41 U1 0 U2 0 PU WILEY-LISS PI NEW YORK PA DIV JOHN WILEY & SONS INC 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0098-6569 J9 CATHETER CARDIO DIAG JI Catheter. Cardiovasc. Diagn. PD MAY PY 1991 VL 23 IS 1 BP 28 EP 31 DI 10.1002/ccd.1810230108 PG 4 WC Cardiac & Cardiovascular Systems SC Cardiovascular System & Cardiology GA FH602 UT WOS:A1991FH60200007 PM 1863957 ER PT J AU BRICKELL, JL KNOX, KJ MILLER, BL BRYANT, BD AF BRICKELL, JL KNOX, KJ MILLER, BL BRYANT, BD TI TRAINING TEACHERS AT THE UNITED-STATES-AIR-FORCE-ACADEMY SO ENGINEERING EDUCATION LA English DT Article RP BRICKELL, JL (reprint author), USAF ACAD,DEPT CIVIL ENGN,COLORADO SPRINGS,CO 80840, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC ENG EDUC PI WASHINGTON PA 1818 N STREET,NW SUITE 600, WASHINGTON, DC 20036 SN 0022-0809 J9 ENG EDUC PD MAY-JUN PY 1991 VL 81 IS 4 BP 429 EP 430 PG 2 WC Education, Scientific Disciplines; Engineering, Multidisciplinary SC Education & Educational Research; Engineering GA FN751 UT WOS:A1991FN75100008 ER PT J AU MAYBECK, PS STEVENS, RD AF MAYBECK, PS STEVENS, RD TI RECONFIGURABLE FLIGHT CONTROL VIA MULTIPLE MODEL ADAPTIVE-CONTROL METHODS SO IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS LA English DT Article AB A multiple model adaptive controller (MMAC) is shown to provide effective reconfigurability when subjected to single and double failures of sensors and/or actuators. Its performance is enhanced by an alternate computation of the MMAC hypothesis probabilities, use of maximum a posteriori probability (MAP) versus Bayesian form of the MMAC (or a modified combination of both), and reduction of identification ambiguities through scalar residual monitoring for the case of sensor failures. C1 USAF,WRIGHT RES & DEV CTR,AVION LAB,WRIGHT PATTERSON AFB,OH 45433. RP MAYBECK, PS (reprint author), USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,ENG,WRIGHT PATTERSON AFB,OH 45433, USA. NR 12 TC 115 Z9 122 U1 0 U2 3 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9251 J9 IEEE T AERO ELEC SYS JI IEEE Trans. Aerosp. Electron. Syst. PD MAY PY 1991 VL 27 IS 3 BP 470 EP 480 DI 10.1109/7.81428 PG 11 WC Engineering, Aerospace; Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA FU364 UT WOS:A1991FU36400006 ER PT J AU BROWN, FM DISTLER, RJ AF BROWN, FM DISTLER, RJ TI AN IMPROVED STATE DIAGRAM SO IEEE TRANSACTIONS ON EDUCATION LA English DT Article AB The conventional state diagram for a synchronous sequential circuit places the circuit's output labels on arrows representing state transitions. This notation leads students (and, apparently, some textbook authors) to think that the labels denote output values during, or associated with, changes of state; in fact, the output is not defined when the state is changing. The misconception fostered by this notation creates difficulties for students when they encounter real circuits. We propose a state diagram which clarifies signal timing by associating outputs with states, and not with state transitions. The proposed diagram provides a number of additional benefits. It includes markedly fewer transition labels, enabling one to design larger systems before the diagram becomes too cluttered to handle. The construction of next state and output maps is simplified. The proposed diagram readily admits register-transfer notation and thus serves as the initial step in the design of a wired controller. The authors have employed the proposed diagram successfully in elementary and advanced classes in logical design. C1 UNIV KENTUCKY,DEPT ELECT ENGN,LEXINGTON,KY 40506. RP BROWN, FM (reprint author), USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,WRIGHT PATTERSON AFB,OH 45433, USA. NR 12 TC 1 Z9 1 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9359 J9 IEEE T EDUC JI IEEE Trans. Educ. PD MAY PY 1991 VL 34 IS 2 BP 199 EP 203 DI 10.1109/13.81602 PG 5 WC Education, Scientific Disciplines; Engineering, Electrical & Electronic SC Education & Educational Research; Engineering GA FT331 UT WOS:A1991FT33100009 ER PT J AU FREEMAN, TM WOODFORD, M AF FREEMAN, TM WOODFORD, M TI HISTAMINE EYE SO JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY LA English DT Note RP FREEMAN, TM (reprint author), WILFORD HALL USAF MED CTR,DEPT AIR FORCE,JOINT MIL MED COMMAND,LACKLAND AFB,TX 78236, USA. NR 3 TC 0 Z9 0 U1 0 U2 0 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0091-6749 J9 J ALLERGY CLIN IMMUN JI J. Allergy Clin. Immunol. PD MAY PY 1991 VL 87 IS 5 BP 1034 EP 1034 DI 10.1016/0091-6749(91)90428-Q PG 1 WC Allergy; Immunology SC Allergy; Immunology GA FM095 UT WOS:A1991FM09500018 PM 2026842 ER PT J AU FISCHER, DW MANASREH, MO AF FISCHER, DW MANASREH, MO TI THE EFFECT OF CHARGE STATE ON THE LOCAL VIBRATIONAL-MODE ABSORPTION OF THE CARBON ACCEPTOR IN SEMI-INSULATING GAAS - REPLY SO JOURNAL OF APPLIED PHYSICS LA English DT Letter AB In a previous report we showed the effect of photoquenching the EL2 donor in GaAs on the carbon acceptor electronic absorption and local vibrational mode (LVM) absorption spectra. We agree that for the sample used to illustrate these effects, only a small portion (9% or less) of the total carbon was neutralized by the photoquench. Other samples have been studied, however, in which a much larger fraction (30% or more) of the carbon has been neutralized with no effect on the carbon LVM. We therefore maintain that our previous conclusion, i.e., a change in the charge state of carbon has no significant effect on the LVM structure, is still valid. C1 WRIGHT LAB,ELECTR TECHNOL DIRECTORATE WL ELRA,WRIGHT PATTERSON AFB,OH 45433. RP FISCHER, DW (reprint author), WRIGHT LAB,MAT DIRECTORATE WL MLPO,WRIGHT PATTERSON AFB,OH 45433, USA. NR 5 TC 2 Z9 2 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD MAY 1 PY 1991 VL 69 IS 9 BP 6733 EP 6734 DI 10.1063/1.348899 PG 2 WC Physics, Applied SC Physics GA FM171 UT WOS:A1991FM17100083 ER PT J AU SCHROER, MS KIRK, WC WAHL, TM HUTCHENS, LH MORIARTY, JD BERGENHOLZ, B AF SCHROER, MS KIRK, WC WAHL, TM HUTCHENS, LH MORIARTY, JD BERGENHOLZ, B TI CLOSED VERSUS OPEN DEBRIDEMENT OF FACIAL GRADE-II MOLAR FURCATIONS SO JOURNAL OF CLINICAL PERIODONTOLOGY LA English DT Article DE FURCATIONS; MOLARS; DEBRIDEMENT; SCALING ROOT PLANING; SURGERY ID GUIDED TISSUE REGENERATION; LONG-TERM; ATTACHMENT LEVEL; PERIODONTAL THERAPY; SURGICAL-TREATMENT; MANDIBULAR MOLARS; POCKET DEPTH; TOOTH LOSS; REPRODUCIBILITY; DISEASE AB Clinical responses of facial grade II molar furcations to closed (C) versus open (O) debridement were evaluated. 25 teeth were treated at baseline (BL) with scaling/root planing (S/RP) and evaluated at 4 months. 12 of the teeth were then treated with open flap debridement and the remaining teeth were treated with further S/RP. Clinical parameters of plaque, gingival inflammation, bleeding on probing, gingival fluid flow, pocket depth and probing attachment level were taken at BL, 4, 7, 10, 13 and 16 months. Pairwise differences were determined between visits and a t-test was applied to differences for C and O. For both treatment groups, the greatest changes in clinical parameters occurred from BL - 4 months. Plaque and gingival inflammation showed a gradual reduction from BL throughout the study for both groups. A reduction in pocket depth from BL - 16 months was noted in both groups (mid-furcal, C = 1.5 mm, O = 1.2 mm, root prominence, C = 1.02 mm, O = 0.84 mm)! There was a gain in probing attachment level in the midfurcal area for the C group (0.6 mm) while the O group lost (-0.46 mm). There were no statistically significant differences found for any clinical parameter between closed and open debridement. The presence of plaque and bleeding at a furcal site had not significant effect on treatment response. C1 UNIV N CAROLINA,SCH DENT,DEPT PERIODONT,CHAPEL HILL,NC 27599. W PORT PL MED CTR,ST LOUIS,MO 63146. 91ST STRATEG HOSP,DEPT CLIN,MINOT AFB,ND. GOTHENBURG UNIV,SCH DENT,S-41124 GOTHENBURG,SWEDEN. NR 35 TC 18 Z9 19 U1 0 U2 1 PU MUNKSGAARD INT PUBL LTD PI COPENHAGEN PA 35 NORRE SOGADE, PO BOX 2148, DK-1016 COPENHAGEN, DENMARK SN 0303-6979 J9 J CLIN PERIODONTOL JI J. Clin. Periodontol. PD MAY PY 1991 VL 18 IS 5 BP 323 EP 329 DI 10.1111/j.1600-051X.1991.tb00436.x PG 7 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA FP233 UT WOS:A1991FP23300008 PM 2066447 ER PT J AU ROBINETTE, RL AF ROBINETTE, RL TI THE RELATIONSHIP BETWEEN THE MARLOWE-CROWNE FORM C AND THE VALIDITY SCALES OF THE MMPI SO JOURNAL OF CLINICAL PSYCHOLOGY LA English DT Article ID SOCIAL DESIRABILITY SCALES; HOPELESSNESS C1 USAF,WASHINGTON,DC 20330. NR 10 TC 30 Z9 30 U1 0 U2 3 PU CLINICAL PSYCHOLOGY PUBL CO PI BRANDON PA 4 CONANT SQUARE, BRANDON, VT 05733 SN 0021-9762 J9 J CLIN PSYCHOL JI J. Clin. Psychol. PD MAY PY 1991 VL 47 IS 3 BP 396 EP 399 DI 10.1002/1097-4679(199105)47:3<396::AID-JCLP2270470311>3.0.CO;2-K PG 4 WC Psychology, Clinical SC Psychology GA FK033 UT WOS:A1991FK03300010 PM 2066408 ER PT J AU COPP, PD DENDIS, JC MALL, S AF COPP, PD DENDIS, JC MALL, S TI FAILURE ANALYSIS AND DAMAGE INITIATION IN CARBON-CARBON COMPOSITE-MATERIALS UNDER 3-POINT BENDING SO JOURNAL OF COMPOSITE MATERIALS LA English DT Article ID STRESSED ORTHOTROPIC BEAM AB Carbon-carbon composite materials offer designers a significant improvement over conventional materials for advanced turbine engine applications. However, these composite components must be attached to other components which is usually done using mechanical fasteners. These attachments create contact stresses, which in turn lead to a variety of failure modes and damage. In order to characterize these failure modes and damage mechanisms a three-point bend test was employed. This test has been widely studied by many researchers and provides a wealth of comparative data. In addition it is the simplest mechanical and experimental model of a contact problem. This study focused on determining damage initiation and failure mechanisms in woven uncoated carbon-carbon composite laminates resulting from the three-point bend test. Failure modes and damage initiation sites for short and long beam geometries were determined. C1 USAF,INST TECHNOL,DEPT AERONAUT & ASTRONAUT,WRIGHT PATTERSON AFB,OH 45433. USAF,DIV AERONAUT SYST,WRIGHT PATTERSON AFB,OH 45433. RP COPP, PD (reprint author), WRIGHT RES & DEV CTR,DIV ADV PROPULS,AERO PROPULS & POWER LAB,WRIGHT PATTERSON AFB,OH 45433, USA. NR 14 TC 8 Z9 10 U1 1 U2 1 PU TECHNOMIC PUBL CO INC PI LANCASTER PA 851 NEW HOLLAND AVE, BOX 3535, LANCASTER, PA 17604 SN 0021-9983 J9 J COMPOS MATER JI J. Compos Mater. PD MAY PY 1991 VL 25 IS 5 BP 593 EP 608 PG 16 WC Materials Science, Composites SC Materials Science GA FQ950 UT WOS:A1991FQ95000007 ER PT J AU HEDIN, AE BIONDI, MA BURNSIDE, RG HERNANDEZ, G JOHNSON, RM KILLEEN, TL MAZAUDIER, C MERIWETHER, JW SALAH, JE SICA, RJ SMITH, RW SPENCER, NW WICKWAR, VB VIRDI, TS AF HEDIN, AE BIONDI, MA BURNSIDE, RG HERNANDEZ, G JOHNSON, RM KILLEEN, TL MAZAUDIER, C MERIWETHER, JW SALAH, JE SICA, RJ SMITH, RW SPENCER, NW WICKWAR, VB VIRDI, TS TI REVISED GLOBAL-MODEL OF THERMOSPHERE WINDS USING SATELLITE AND GROUND-BASED OBSERVATIONS SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article ID INCOHERENT-SCATTER RADAR; SEASONAL-VARIATIONS; NEUTRAL WIND; F-REGION; ARECIBO; TEMPERATURES; SONDRESTROM; AREQUIPA; DYNAMICS; PERU AB Thermospheric wind data obtained from the Atmosphere Explorer E andDynamics Explorer 2 satellites have been combined with wind data for the lower and upper thermosphere from ground-based incoherent scatter radar and Fabry-Perot optical interferometers to generate a revision (HWM90) of the HWM87 empirical model and extend its applicability to 100 km. Comparison of the various data sets with the aid of the model shows in general remarkable agreement, particularly at mid and low latitudes. The ground-based data allow modeling of seasonal/diurnal variations, which are most distinct at mid latitudes. While solar activity variations are now included, they are found to be small and not always very clearly delineated by the current data. They are most obvious at the higher latitudes. The model describes the transition from predominately diurnal variations in the upper thermosphere to semidiurnal variations in the lower thermosphere and a transition from summer to winter flow above 140 km to winter to summer flow below. Significant altitude gradients in the wind are found to extend to 300 km at some local times and pose complications for interpretation of Fabry-Perot observations. C1 UNIV PITTSBURGH,DEPT PHYS & ASTRON,PITTSBURGH,PA 15260. ARECIBO OBSERV,ARECIBO,PR 00612. UNIV WASHINGTON,GRAD PROGRAM GEOPHYS,SEATTLE,WA 98195. UNIV MICHIGAN,SPACE PHYS RES LAB,ANN ARBOR,MI 48109. USAF,GEOPHYS LAB,BEDFORD,MA 01731. MIT,HAYSTACK OBSERV,CAMBRIDGE,MA 02139. UNIV WESTERN ONTARIO,LONDON N6A 3K7,ONTARIO,CANADA. UNIV ALASKA,INST GEOPHYS,FAIRBANKS,AK 99701. NASA,GODDARD SPACE FLIGHT CTR,UNIV RES FDN,GREENBELT,MD 20771. UTAH STATE UNIV,CTR ATMOSPHER & SPACE SCI,LOGAN,UT 84322. UNIV COLL ABERYSTWYTH,DEPT PHYS,ABERYSTWYTH SY23 1NE,DYFED,WALES. RP HEDIN, AE (reprint author), NASA,GODDARD SPACE FLIGHT CTR,PLANETARY ATMOSPHERES BRANCH,CODE 914,GREENBELT,MD 20771, USA. OI Hernandez, Gonzalo/0000-0003-4245-8696 NR 37 TC 523 Z9 526 U1 2 U2 11 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES JI J. Geophys. Res-Space Phys. PD MAY 1 PY 1991 VL 96 IS A5 BP 7657 EP 7688 DI 10.1029/91JA00251 PG 32 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA FL029 UT WOS:A1991FL02900006 ER PT J AU ALFANO, S FOSHA, CE AF ALFANO, S FOSHA, CE TI HYPERVELOCITY ORBITAL INTERCEPT GUIDANCE USING CERTAINTY CONTROL SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS LA English DT Article ID CLOSED-FORM SOLUTION; MISSILE AB Terminal guidance of a hypervelocity exoatmospheric orbital interceptor with free end time is examined. A new approach called certainty control is developed where control energy expenditure is reduced by constraining the expected final state to a function of projected estimate error. Conceptually, the constraint produces a shrinking sphere about the predicted impact point with the radius being a function of estimated error. If the predicted miss is inside or touching the sphere, thrusting is not necessary. The interceptor is modeled as a satellite with lateral thrusting capability using two-body orbital dynamics. The target is modeled as an intercontinental ballistic missile (IBM) in its final boost phase prior to burnout. Filtering is accomplished using an eight-state extended Kalman filter with line-of-sight and range updates. The estimated relative trajectory and variances are propagated numerically to predicted impact time and then approximated by splines, eliminating the need to propagate new data repeatedly when present conditions are varied. A search is then made for a new impact time and point that will minimize present interceptor velocity changes and final miss distance. This control strategy, which is applied to two intercept problems, substantially reduces fuel consumption. C1 UNIV COLORADO,DEPT ELECT ENGN,COLORADO SPRINGS,CO 80918. UNIV COLORADO,SPACE STUDIES PROGRAM,COLORADO SPRINGS,CO 80918. UNIV COLORADO,SPACE & FLIGHT SYST LAB,COLORADO SPRINGS,CO 80918. RP ALFANO, S (reprint author), USAF ACAD,DEPT ASTRONAUT,COLORADO SPRINGS,CO 80840, USA. NR 28 TC 4 Z9 4 U1 1 U2 1 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0731-5090 J9 J GUID CONTROL DYNAM JI J. Guid. Control Dyn. PD MAY-JUN PY 1991 VL 14 IS 3 BP 574 EP 580 DI 10.2514/3.20677 PG 7 WC Engineering, Aerospace; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA FQ230 UT WOS:A1991FQ23000011 ER PT J AU LUCEY, DR MCGUIRE, SA CLERICI, M HALL, K BENTON, J BUTZIN, CA WARD, WW SHEARER, G BOSWELL, RN HENDRIX, CW AF LUCEY, DR MCGUIRE, SA CLERICI, M HALL, K BENTON, J BUTZIN, CA WARD, WW SHEARER, G BOSWELL, RN HENDRIX, CW TI COMPARISON OF SPINAL-FLUID BETA-2-MICROGLOBULIN LEVELS WITH CD4+ T-CELL COUNT, INVITRO T-HELPER CELL-FUNCTION, AND SPINAL-FLUID IGG PARAMETERS IN 163 NEUROLOGICALLY NORMAL ADULTS INFECTED WITH THE HUMAN-IMMUNODEFICIENCY-VIRUS TYPE-1 SO JOURNAL OF INFECTIOUS DISEASES LA English DT Article ID CENTRAL NERVOUS-SYSTEM; AIDS-RELATED COMPLEX; BLOOD-BRAIN-BARRIER; CEREBROSPINAL-FLUID; BETA-2 MICROGLOBULIN; SERUM BETA-2-MICROGLOBULIN; HIV INFECTION; HTLV-III; BETA2-MICROGLOBULIN; DYSFUNCTION AB beta-2-microglobulin levels were measured in the cerebrospinal fluid (CSF) and serum of 163 human immunodeficiency virus-positive (HIV+) persons with normal neurologic physical examinations. None were on antiretroviral therapy. Only 3% had a positive CSF HIV p24 antigen test. The CSF beta-2-microglobulin levels increased as the CD4+ T cell count decreased. Intrathecal production of beta-2-microglobulin was suggested by finding CSF concentrations greater than serum concentrations in 15% of patients. The CSF beta-2-microglobulin levels rose as in vitro T helper cell function deteriorated, independent of CD4+ T cell count. CSF beta-2-microglobulin levels paralleled CSF IgG, IgG index, and IgG synthesis. Higher CSF beta-2-microglobulin levels were found in persons with positive CSF oligoclonal bands. CSF beta-2-microglobulin concentration may serve as a marker for subclinical neurologic damage due to HIV. If this is established, defining the effect of anti-HIV interventions on CSF beta-2-microglobulin would be warranted. C1 WILFORD HALL USAF MED CTR,DEPT MED,LACKLAND AFB,TX 78236. WILFORD HALL USAF MED CTR,DEPT NEUROL,LACKLAND AFB,TX 78236. WILFORD HALL USAF MED CTR,DEPT PATHOL,LACKLAND AFB,TX 78236. WILFORD HALL USAF MED CTR,CLIN INVEST DIRECTORATE,LACKLAND AFB,TX 78236. NCI,EXPTL IMMUNOL BRANCH,BETHESDA,MD 20892. RI Hendrix, Craig/G-4182-2014 OI Hendrix, Craig/0000-0002-5696-8665 NR 39 TC 19 Z9 19 U1 0 U2 0 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0022-1899 J9 J INFECT DIS JI J. Infect. Dis. PD MAY PY 1991 VL 163 IS 5 BP 971 EP 975 PG 5 WC Immunology; Infectious Diseases; Microbiology SC Immunology; Infectious Diseases; Microbiology GA FH745 UT WOS:A1991FH74500006 PM 1673466 ER PT J AU AHNER, JF WIENER, HW AF AHNER, JF WIENER, HW TI ON AN EXTERIOR LAPLACE EQUATION PROBLEM WITH ROBIN BOUNDARY-CONDITION SO JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONS LA English DT Article ID HELMHOLTZ-EQUATION; DIRICHLET PROBLEM; ITERATIVE METHODS C1 ITT FED ELECT CORP,VANDENBERG AFB,CA 93437. RP AHNER, JF (reprint author), VANDERBILT UNIV,DEPT MATH,NASHVILLE,TN 37235, USA. NR 23 TC 5 Z9 5 U1 0 U2 0 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 SN 0022-247X J9 J MATH ANAL APPL JI J. Math. Anal. Appl. PD MAY 1 PY 1991 VL 157 IS 1 BP 127 EP 146 DI 10.1016/0022-247X(91)90140-U PG 20 WC Mathematics, Applied; Mathematics SC Mathematics GA FQ779 UT WOS:A1991FQ77900009 ER PT J AU CARPENTER, TL BERNACKY, BJ STABELL, EE AF CARPENTER, TL BERNACKY, BJ STABELL, EE TI HUMAN ENVENOMIZATION BY PLECTREURYS-TRISTIS SIMON (ARANEAE, PLECTREURIDAE) - A CASE-REPORT SO JOURNAL OF MEDICAL ENTOMOLOGY LA English DT Note DE ARACHNIDA; PLECTREURIDAE; PLECTREURYS-TRISTIS; ENVENOMIZATION AB A case of human envenomization by a plectreurid spider, Plectreurys tristis Simon, is reported for the first time. The patient was bitten on the calf of the leg and initially experienced pain, edema, and slight pallor at the bite site. Numbness persisted for almost-equal-to 1 h in the affected leg. Symptoms resolved without specific treatment, and no significant sequelae were observed. C1 USAF,SCH AEROSP MED,DIV EPIDEMIOL,DIV HUMAN SYST,AIR FORCE SYST COMMAND,BROOKS AFB,TX 78235. NR 7 TC 4 Z9 4 U1 0 U2 3 PU ENTOMOL SOC AMER PI LANHAM PA 9301 ANNAPOLIS RD, LANHAM, MD 20706 SN 0022-2585 J9 J MED ENTOMOL JI J. Med. Entomol. PD MAY PY 1991 VL 28 IS 3 BP 477 EP 478 PG 2 WC Entomology; Veterinary Sciences SC Entomology; Veterinary Sciences GA FK857 UT WOS:A1991FK85700031 PM 1875380 ER PT J AU FAIRCLOTH, WJ EDWARDS, RC FARHOOD, VW AF FAIRCLOTH, WJ EDWARDS, RC FARHOOD, VW TI CHERUBISM INVOLVING A MOTHER AND DAUGHTER - CASE-REPORTS AND REVIEW OF THE LITERATURE SO JOURNAL OF ORAL AND MAXILLOFACIAL SURGERY LA English DT Review C1 DAVID GRANT USAF MED CTR,DEPT ORAL & MAXILLOFACIAL SURG,TRAVIS AFB,CA 94535. RP FAIRCLOTH, WJ (reprint author), TAC,MED GRP 1,DEPT ORAL & MAXILLOFACIAL SURG,LANGLEY AFB,VA 23665, USA. NR 23 TC 15 Z9 16 U1 0 U2 1 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0278-2391 J9 J ORAL MAXIL SURG JI J. Oral Maxillofac. Surg. PD MAY PY 1991 VL 49 IS 5 BP 535 EP 542 PG 8 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA FK047 UT WOS:A1991FK04700021 PM 2019904 ER PT J AU MEALEY, BL EBERSOLE, JL AF MEALEY, BL EBERSOLE, JL TI DEVELOPMENT OF A RAPID QUALITATIVE ASSAY FOR DETERMINING ELEVATED ANTIBODY-LEVELS TO PERIODONTOPATHIC ORGANISMS SO JOURNAL OF PERIODONTOLOGY LA English DT Article DE ACTINOBACILLUS-ACTINOMYCETEMCOMITANS; PORPHYROMONAS-GINGIVALIS; PREVOTELLA-INTERMEDIA; IGG ANTIBODIES ANALYSIS ID DOT-IMMUNOBINDING ASSAY; HUMAN IMMUNE-RESPONSES; ACTINOBACILLUS-ACTINOMYCETEMCOMITANS; SERUM ANTIBODIES; BACTEROIDES-GINGIVALIS; ORAL MICROORGANISMS; JUVENILE PERIODONTITIS; ATTACHMENT LOSS; YOUNG-ADULTS; DISEASE AB TO ALLOW MORE WIDESPREAD USE of systemic antibody analysis in clinical settings, a rapid test for determining elevated antibody to periodontitis-associated bacteria was developed. The technique utilizes dot-immunoblotting (DIB) on nitrocellulose paper with whole formalinized Actinobacillus actinomycetemcomitans, Porphyromonas gingivalis, and Prevotella intermedia. An ELISA was used to compare IgG antibody levels to these organisms in venous serum and peripheral capillary blood from 44 subjects. Correlation between serum and capillary levels ranged from r = 0.760 to 0.900 (P < 0.00001). Capillary blood antibody levels averaged 55% of those detected in serum. The assay was developed using a variety of antigen and reagent concentrations and multiple chromogenic enzyme-substrate systems. Subsequently, 34 periodontally diseased and 10 periodontally healthy subjects were analyzed for serum IgG antibodies using a quantitative ELISA. The qualitative DIB was performed using capillary blood obtained by digi-puncture and results were compared in a blind fashion to the ELISA data. Relative to its ability to detect elevated antibody levels to these 3 organisms, the DIB had an overall sensitivity of 93% and a specificity of 87% (P < 0.000001). Using peripheral capillary blood and the DIB, detection of elevated systemic antibody levels can be performed in approximately 2 hours. The DIB may be a useful aid in assessing the host response to putative periodontopathic microorganisms. C1 UNIV TEXAS,HLTH SCI CTR,DEPT PERIODONT,SAN ANTONIO,TX 78284. RP MEALEY, BL (reprint author), WILFORD HALL USAF MED CTR,DEPT PERIODONT,LACKLAND AFB,TX 78236, USA. FU NIDCR NIH HHS [DE-07809] NR 39 TC 4 Z9 4 U1 0 U2 0 PU AMER ACAD PERIODONTOLOGY PI CHICAGO PA 737 NORTH MICHIGAN AVENUE, SUITE 800, CHICAGO, IL 60611-2690 SN 0022-3492 J9 J PERIODONTOL JI J. Periodont. PD MAY PY 1991 VL 62 IS 5 BP 300 EP 307 PG 8 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA FL378 UT WOS:A1991FL37800002 PM 2072241 ER PT J AU FAVALORO, SC NEJAD, AS AHMED, SA AF FAVALORO, SC NEJAD, AS AHMED, SA TI EXPERIMENTAL AND COMPUTATIONAL INVESTIGATION OF ISOTHERMAL SWIRLING FLOW IN AN AXISYMMETRICAL DUMP COMBUSTOR SO JOURNAL OF PROPULSION AND POWER LA English DT Article ID VELOCITY; JETS AB Experimental and theoretical studies of nonreacting swirling flow have been performed in a model of an axi-symmetric dump combustor. A two-component laser Doppler velocimeter was used to obtain measurements of the three velocity components and numerous fundamental turbulence quantities in two series of tests with minimum disturbance to the combustor flowfield. The results showed the significant effects of swirl, with and without vortex breakdown, on the mean and turbulent flowfields. The experimental results were used to check the performance of a recently developed computer program which used the k-xi closure model. Comparisons of the numerical and experimental results showed the inadequacy of the k-xi turbulence model in representing the complex structure of confined swirling flows. C1 AERO PROP & POWER LAB,WRIGHT PATTERSON AFB,OH 45433. RP FAVALORO, SC (reprint author), AERONAUT RES LAB,MELBOURNE,AUSTRALIA. NR 29 TC 19 Z9 19 U1 0 U2 6 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0748-4658 J9 J PROPUL POWER JI J. Propul. Power PD MAY-JUN PY 1991 VL 7 IS 3 BP 348 EP 356 DI 10.2514/3.23333 PG 9 WC Engineering, Aerospace SC Engineering GA FU462 UT WOS:A1991FU46200006 ER PT J AU KIM, RY PAGANO, NJ AF KIM, RY PAGANO, NJ TI CRACK INITIATION IN UNIDIRECTIONAL BRITTLE-MATRIX COMPOSITES SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY LA English DT Article DE CRACKS; COMPOSITES; FIBERS; MATRIX; ACOUSTIC EMISSION AB This paper describes the initiation of matrix cracking for glass and glass-ceramic matrix composites reinforced with small-diameter silicon carbide and carbon fibers under uniaxial tensile loading. Acoustic emission, replication, and optical microscopy in conjunction with stress-strain curves are employed to detect the initiation of matrix cracking. The proportional limit of the stress-strain curve is found to overestimate the initiation of matrix cracking in the material systems studied. The matrix cracking initiates at axial strains from 0.07% to 0.15%. The ACK model overestimates the initiation of the matrix cracking for the material systems studied in this paper. C1 USAF,WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP KIM, RY (reprint author), UNIV DAYTON,RES INST,DAYTON,OH 45469, USA. NR 13 TC 89 Z9 92 U1 2 U2 8 PU AMER CERAMIC SOC PI WESTERVILLE PA 735 CERAMIC PLACE, PO BOX 6136, WESTERVILLE, OH 43081-6136 SN 0002-7820 J9 J AM CERAM SOC JI J. Am. Ceram. Soc. PD MAY PY 1991 VL 74 IS 5 BP 1082 EP 1090 DI 10.1111/j.1151-2916.1991.tb04346.x PG 9 WC Materials Science, Ceramics SC Materials Science GA FL762 UT WOS:A1991FL76200027 ER PT J AU COYNE, EP BELVEDERE, DA VANDESTREEK, PR WEILAND, FL EVANS, RB SPACCAVENTO, LJ AF COYNE, EP BELVEDERE, DA VANDESTREEK, PR WEILAND, FL EVANS, RB SPACCAVENTO, LJ TI TL-201 SCINTIGRAPHY AFTER INTRAVENOUS-INFUSION OF ADENOSINE COMPARED WITH EXERCISE THALLIUM TESTING IN THE DIAGNOSIS OF CORONARY-ARTERY DISEASE SO JOURNAL OF THE AMERICAN COLLEGE OF CARDIOLOGY LA English DT Article ID BLOOD-FLOW; NONINVASIVE ASSESSMENT; DIPYRIDAMOLE; VASODILATOR; METABOLISM; STENOSES; STRESS; STEAL; CHEST AB Adenosine is an endogenously produced compound that has significant effects as a coronary and systemic vasodilator. Previous studies suggest that intravenous infusion of adenosine, coupled with thallium-201 scintigraphy, may have specific value as a noninvasive means of evaluating coronary artery disease. The purpose of this study was to compare the diagnostic value of adenosine thallium testing with that of standard exercise thallium testing. One hundred subjects were studied with exercise thallium imaging and thallium imaging after adenosine infusion, including 47 with angiographically proved coronary artery disease and 53 control subjects. The overall sensitivity of the thallium procedures was 81% for the exercise study and 83% for the adenosine study (p = NS); the specificity was 74% for the exercise study and 75% for the adenosine study (p = NS). The diagnostic accuracy of the exercise study was 77% and that of the adenosine study was 79%. Ninety-four percent of subjects had an adverse effect due to the adenosine infusion; however, most of these effects were mild and well tolerated. All adverse effects abated within 30 to 45 s of the termination of the study, consistent with the very brief half-life of the agent. Thus, thallium-201 scintigraphy after intravenous infusion of adenosine has a diagnostic value similar to that of exercise thallium testing for evaluation of coronary artery disease. Adenosine thallium testing may be particularly useful in evaluating patients unable to perform treadmill exercise testing. C1 WILFORD HALL USAF MED CTR,DEPT MED,CARDIOL SERV,LACKLAND AFB,TX 78236. WILFORD HALL USAF MED CTR,DEPT NUCL MED,LACKLAND AFB,TX 78236. NR 31 TC 98 Z9 103 U1 0 U2 1 PU ELSEVIER SCIENCE INC PI NEW YORK PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 SN 0735-1097 J9 J AM COLL CARDIOL JI J. Am. Coll. Cardiol. PD MAY PY 1991 VL 17 IS 6 BP 1289 EP 1294 PG 6 WC Cardiac & Cardiovascular Systems SC Cardiovascular System & Cardiology GA FJ444 UT WOS:A1991FJ44400008 PM 2016445 ER PT J AU ARMBRUSTER, DA AF ARMBRUSTER, DA TI THE GENESIS AND CLINICAL-SIGNIFICANCE OF CREATINE-KINASE ISOFORMS SO LABORATORY MEDICINE LA English DT Article AB Two of the three major isoenzymes of creatine kinase (CK), MM and MB, undergo postsynthetic modification resulting in the creation of five isoforms. On the basis of their relative electrophoretic migration, the isoforms are designated MM3, MM2, MM1, MB2, and MB1 (from most cathodal to most anodal). CK isoform formation is a naturally occurring phenomenon mediated by carboxy-peptidase (CPase) N. CPase N cleaves the carboxy-terminal amino acid, lysine, from the M subunits of MM3 to form MM2 and MM1 and from the M subunit of MB2 to form MB1. MM3 and MB2 are tissue isoforms, and MM2, MM1, and MB1 are formed after the tissue isoforms are released into the circulation. The CK isoforms can be used as markers for confirmation of an acute myocardial infarction (AMI) and for successful reperfusion of AMI patients treated with thrombolytic therapy. Both MM3 and MB2 are significantly increased in the blood shortly after an AMI. Total MM3 and MB2 and the MM3/MM1 and MB2/MB1 ratios are all elevated subsequent to AMI and prior to total CK and CK-MB levels. The CK-MB isoforms are preferable to the MM isoforms for diagnosing AMI and reperfusion because they are more myocardial tissue specific. The CK isoforms can be assayed using electrophoresis, isoelectric focusing, chromatofocusing, high-performance liquid chromatography, and immunoinhibition. Rapid, precise, and sensitive electrophoresis procedures allow CK isoform analysis to be used for diagnosis and treatment of patients as early as 2 to 6 hours after AMI. RP ARMBRUSTER, DA (reprint author), ARMSTRONG LAB,EKLC,BROOKS AFB,TX 78235, USA. NR 0 TC 3 Z9 3 U1 0 U2 0 PU AMER SOC CLIN PATHOLOGISTS PI CHICAGO PA 2100 W HARRISON ST, CHICAGO, IL 60612 SN 0007-5027 J9 LAB MED JI Lab. Med. PD MAY PY 1991 VL 22 IS 5 BP 325 EP 334 PG 10 WC Medical Laboratory Technology SC Medical Laboratory Technology GA FH167 UT WOS:A1991FH16700006 ER PT J AU ARMBRUSTER, DA GREEN, DT AF ARMBRUSTER, DA GREEN, DT TI SENSITIVITY OF ABBOTT ADX COCAINE METABOLITE ASSAY AND THE MTDX SETUP - REPLY SO LABORATORY MEDICINE LA English DT Letter RP ARMBRUSTER, DA (reprint author), USAF,SCH AEROSP MED,BROOKS AFB,TX 78235, USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU AMER SOC CLIN PATHOLOGISTS PI CHICAGO PA 2100 W HARRISON ST, CHICAGO, IL 60612 SN 0007-5027 J9 LAB MED JI Lab. Med. PD MAY PY 1991 VL 22 IS 5 BP 358 EP 359 PG 2 WC Medical Laboratory Technology SC Medical Laboratory Technology GA FH167 UT WOS:A1991FH16700013 ER PT J AU ARMBRUSTER, DA AF ARMBRUSTER, DA TI SCREENING FOR DRUGS OF ABUSE USING THE ABBOTT ADX - REPLY SO LABORATORY MEDICINE LA English DT Letter RP ARMBRUSTER, DA (reprint author), USAF,SCH AEROSP MED,BROOKS AFB,TX 78235, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC CLIN PATHOLOGISTS PI CHICAGO PA 2100 W HARRISON ST, CHICAGO, IL 60612 SN 0007-5027 J9 LAB MED JI Lab. Med. PD MAY PY 1991 VL 22 IS 5 BP 359 EP 359 PG 1 WC Medical Laboratory Technology SC Medical Laboratory Technology GA FH167 UT WOS:A1991FH16700015 ER PT J AU KEMERLEY, RT FAYETTE, DF AF KEMERLEY, RT FAYETTE, DF TI AFFORDABLE MMICS FOR AIR-FORCE SYSTEMS SO MICROWAVE JOURNAL LA English DT Article C1 GRIFFISS AIR FORCE BASE,ROME LAB,ROME,NY. RP KEMERLEY, RT (reprint author), WRIGHT PATTERSON AIR FORCE BASE,WRIGHT LAB,DAYTON,OH 45433, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU HORIZON HOUSE-MICROWAVE PI NORWOOD PA 685 CANTON ST, NORWOOD, MA 02062 SN 0192-6225 J9 MICROWAVE J JI Microw. J. PD MAY PY 1991 VL 34 IS 5 BP 172 EP & PG 0 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA FP599 UT WOS:A1991FP59900003 ER PT J AU MORENO, RJ KLOESS, P CARLSON, DW AF MORENO, RJ KLOESS, P CARLSON, DW TI EFFECT OF SUCCINYLCHOLINE ON THE INTRAOCULAR CONTENTS OF OPEN GLOBES SO OPHTHALMOLOGY LA English DT Article ID PRESSURE AB The use of succinylcholine in patients with suspected or proven open globes is considered dangerous by some for fear of extruding the intraocular contents as a consequence of the co-contraction of the extraocular muscles it produces. To test this hypothesis, the authors devised an anterior and a posterior trauma model in the cat eye. Thirty events were studied using the anterior trauma model and eight with the posterior model. The only observable effect of succinylcholine administration was forward displacement of the lens and iris. No intraocular content was lost in any event. The authors believe this study supports the argument that, when indicated, succinylcholine may be considered in open globes. RP MORENO, RJ (reprint author), WILFORD HALL USAF MED CTR,DEPT OPHTHALMOL,SGHSE,LACKLAND AFB,TX 78236, USA. NR 11 TC 17 Z9 17 U1 0 U2 1 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 0161-6420 J9 OPHTHALMOLOGY JI Ophthalmology PD MAY PY 1991 VL 98 IS 5 BP 636 EP 638 PG 3 WC Ophthalmology SC Ophthalmology GA FL048 UT WOS:A1991FL04800021 PM 2062495 ER PT J AU KHOURY, J WOODS, CL CRONINGOLOMB, M AF KHOURY, J WOODS, CL CRONINGOLOMB, M TI PHOTOREFRACTIVE HOLOGRAPHIC INTERFERENCE NOVELTY FILTER SO OPTICS COMMUNICATIONS LA English DT Article ID BISMUTH SILICON-OXIDE AB A novelty filter is demonstrated in bismuth silicon oxide utilizing the first demonstration of self-nulling and self-aligning of reflection and transmission phase conjugate beams. Transient enhancement and suppression of the phase conjugate signal is also demonstrated and used to measure direction of motion. C1 USAF,ROME AIR DEV CTR,BEDFORD,MA 01731. RI Cronin-Golomb, Mark/A-5430-2012 OI Cronin-Golomb, Mark/0000-0002-8936-4358 NR 11 TC 11 Z9 12 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0030-4018 J9 OPT COMMUN JI Opt. Commun. PD MAY 1 PY 1991 VL 82 IS 5-6 BP 533 EP 538 DI 10.1016/0030-4018(91)90375-N PG 6 WC Optics SC Optics GA FM519 UT WOS:A1991FM51900025 ER PT J AU OSTERBERG, U LAWCONNELL, RI LEITCH, JW AF OSTERBERG, U LAWCONNELL, RI LEITCH, JW TI RELATIVE MEASUREMENTS OF TENSOR COMPONENTS FOR INTRINSIC AND INDUCED 2ND-ORDER NONLINEAR SUSCEPTIBILITIES IN GLASS OPTICAL FIBERS SO OPTICS COMMUNICATIONS LA English DT Article ID PHOTOINDUCED 2ND-HARMONIC GENERATION AB We have measured the x and y components of both the intrinsic and induced second-order nonlinear susceptibilities in glass optical fibers. In addition, we have measured the angular dependence of the intrinsic and induced second-harmonic light intensity as a function of input polarization. Our results are discussed in relation to the models put forward to date to explain second-harmonic generation in optical fibers. C1 DARTMOUTH COLL,THAYER SCH ENGN,HANOVER,NH 03755. UNIV COLORADO,NATL INST STAND & TECHNOL,JOINT INST LAB ASTROPHYS,DEPT PHYS,BOULDER,CO 80302. RP OSTERBERG, U (reprint author), USAF ACAD,FJ SEILER RES LAB,COLORADO SPRINGS,CO 80840, USA. NR 18 TC 1 Z9 1 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0030-4018 J9 OPT COMMUN JI Opt. Commun. PD MAY 1 PY 1991 VL 82 IS 5-6 BP 549 EP 553 DI 10.1016/0030-4018(91)90378-Q PG 5 WC Optics SC Optics GA FM519 UT WOS:A1991FM51900028 ER PT J AU GODFREY, BB AF GODFREY, BB TI MIGMA EARLY-TIME DENSITY PROFILES SO PHYSICS OF FLUIDS B-PLASMA PHYSICS LA English DT Article ID STABILITY AB Equations describing the evolution of the Migma plasma equilibrium before the onset of diamagnetism are derived. As an illustrative case, the equations are solved for the early-time Migma density and current profiles in an approximately uniform magnetic field. The density is found to vary as r-1/2 near the axis, rather than the r-1 usually assumed. (The improved profiles should prove useful in stability analyses or for initializing computer simulations.) Evolution of the equilibrium near the axis at later times is evaluated as a second illustrative case, showing that the density there eventually does approach an r-1 profile. Suggestions for computing equilibria in more general, possibly diamagnetic, fields also are presented. RP GODFREY, BB (reprint author), USAF,SYST COMMAND,PHILLIPS LAB,KIRTLAND AFB,NM 87117, USA. RI Godfrey, Brendan/D-8204-2011 OI Godfrey, Brendan/0000-0003-2311-7060 NR 7 TC 1 Z9 1 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0899-8221 J9 PHYS FLUIDS B-PLASMA PD MAY PY 1991 VL 3 IS 5 BP 1186 EP 1190 DI 10.1063/1.859811 PG 5 WC Physics, Fluids & Plasmas SC Physics GA FK973 UT WOS:A1991FK97300009 ER PT J AU LATHAM, RJ ALLEN, KW AF LATHAM, RJ ALLEN, KW TI DEFENSE REFORM IN CHINA - THE PLA-AIR-FORCE SO PROBLEMS OF COMMUNISM LA English DT Article C1 DEF INTELLIGENCE AGCY,DEF INTELLIGENCE COLL,SCH ATTACHE TRAINING,ARLINGTON HALL,VA. RP LATHAM, RJ (reprint author), USAF,TOTAL QUAL MANAGEMENT,WASHINGTON,DC 20330, USA. NR 30 TC 1 Z9 1 U1 0 U2 1 PU US GOVERNMENT PRINTING OFFICE PI WASHINGTON PA SUPT OF DOCUMENTS, WASHINGTON, DC 20402-9325 SN 0032-941X J9 PROBL COMMUNISM PD MAY-JUN PY 1991 VL 40 IS 3 BP 30 EP 50 PG 21 WC Economics; Political Science SC Business & Economics; Government & Law GA FR719 UT WOS:A1991FR71900003 ER PT J AU DALRYMPLE, GV LINDSAY, IR MITCHELL, JC HARDY, KA AF DALRYMPLE, GV LINDSAY, IR MITCHELL, JC HARDY, KA TI A REVIEW OF THE USAF/NASA PROTON BIOEFFECTS PROJECT - RATIONALE AND ACUTE EFFECTS SO RADIATION RESEARCH LA English DT Article C1 UNIV NEBRASKA,MED CTR,DEPT RADIOL,OMAHA,NE 68101. USAF,SCH AEROSP MED,BROOKS AFB,TX 78235. NR 20 TC 11 Z9 11 U1 0 U2 0 PU RADIATION RESEARCH SOC PI OAK BROOK PA 2021 SPRING RD, STE 600, OAK BROOK, IL 60521 SN 0033-7587 J9 RADIAT RES JI Radiat. Res. PD MAY PY 1991 VL 126 IS 2 BP 117 EP 119 DI 10.2307/3577808 PG 3 WC Biology; Biophysics; Radiology, Nuclear Medicine & Medical Imaging SC Life Sciences & Biomedicine - Other Topics; Biophysics; Radiology, Nuclear Medicine & Medical Imaging GA FK351 UT WOS:A1991FK35100001 PM 1850846 ER PT J AU HARDY, KA AF HARDY, KA TI DOSIMETRY METHODS USED IN THE STUDIES OF THE EFFECTS OF PROTONS ON PRIMATES - A REVIEW SO RADIATION RESEARCH LA English DT Article RP HARDY, KA (reprint author), USAF,SCH AEROSP MED,DIV RADIAT SCI,BROOKS AFB,TX 78235, USA. NR 14 TC 9 Z9 9 U1 0 U2 0 PU RADIATION RESEARCH SOC PI OAK BROOK PA 2021 SPRING RD, STE 600, OAK BROOK, IL 60521 SN 0033-7587 J9 RADIAT RES JI Radiat. Res. PD MAY PY 1991 VL 126 IS 2 BP 120 EP 126 DI 10.2307/3577809 PG 7 WC Biology; Biophysics; Radiology, Nuclear Medicine & Medical Imaging SC Life Sciences & Biomedicine - Other Topics; Biophysics; Radiology, Nuclear Medicine & Medical Imaging GA FK351 UT WOS:A1991FK35100002 PM 1850847 ER PT J AU WOOD, DH AF WOOD, DH TI LONG-TERM MORTALITY AND CANCER RISK IN IRRADIATED RHESUS-MONKEYS SO RADIATION RESEARCH LA English DT Article ID MACACA-MULATTA; ENDOMETRIOSIS; RADIOTHERAPY; EXPERIENCE RP WOOD, DH (reprint author), USAF,SCH AEROSP MED,DIV RADIAT SCI,BROOKS AFB,TX 78235, USA. NR 31 TC 43 Z9 44 U1 0 U2 0 PU RADIATION RESEARCH SOC PI OAK BROOK PA 2021 SPRING RD, STE 600, OAK BROOK, IL 60521 SN 0033-7587 J9 RADIAT RES JI Radiat. Res. PD MAY PY 1991 VL 126 IS 2 BP 132 EP 140 DI 10.2307/3577811 PG 9 WC Biology; Biophysics; Radiology, Nuclear Medicine & Medical Imaging SC Life Sciences & Biomedicine - Other Topics; Biophysics; Radiology, Nuclear Medicine & Medical Imaging GA FK351 UT WOS:A1991FK35100004 PM 1850849 ER PT J AU FANTON, JW GOLDEN, JG AF FANTON, JW GOLDEN, JG TI RADIATION-INDUCED ENDOMETRIOSIS IN MACACA-MULATTA SO RADIATION RESEARCH LA English DT Article ID MONKEYS; WOMEN RP FANTON, JW (reprint author), USAF,SCH AEROSP MED,DIV VET SCI,BROOKS AFB,TX 78235, USA. NR 19 TC 52 Z9 53 U1 0 U2 2 PU RADIATION RESEARCH SOC PI OAK BROOK PA 2021 SPRING RD, STE 600, OAK BROOK, IL 60521 SN 0033-7587 J9 RADIAT RES JI Radiat. Res. PD MAY PY 1991 VL 126 IS 2 BP 141 EP 146 DI 10.2307/3577812 PG 6 WC Biology; Biophysics; Radiology, Nuclear Medicine & Medical Imaging SC Life Sciences & Biomedicine - Other Topics; Biophysics; Radiology, Nuclear Medicine & Medical Imaging GA FK351 UT WOS:A1991FK35100005 PM 1850850 ER PT J AU LETT, JT LEE, AC COX, AB AF LETT, JT LEE, AC COX, AB TI LATE CATARACTOGENESIS IN RHESUS-MONKEYS IRRADIATED WITH PROTONS AND RADIOGENIC CATARACT IN OTHER SPECIES SO RADIATION RESEARCH LA English DT Article ID ACCELERATED HEAVY-PARTICLES; RABBIT-TISSUES; IONS; MORTALITY; RADIATION; LENS C1 USAF,SCH AEROSP MED,DIV RADIAT SCI,BROOKS AFB,TX 78235. COLORADO STATE UNIV,DEPT RADIOL HLTH SCI,FT COLLINS,CO 80523. NR 42 TC 16 Z9 18 U1 0 U2 0 PU RADIATION RESEARCH SOC PI OAK BROOK PA 2021 SPRING RD, STE 600, OAK BROOK, IL 60521 SN 0033-7587 J9 RADIAT RES JI Radiat. Res. PD MAY PY 1991 VL 126 IS 2 BP 147 EP 156 DI 10.2307/3577813 PG 10 WC Biology; Biophysics; Radiology, Nuclear Medicine & Medical Imaging SC Life Sciences & Biomedicine - Other Topics; Biophysics; Radiology, Nuclear Medicine & Medical Imaging GA FK351 UT WOS:A1991FK35100006 PM 1850851 ER PT J AU KANDASAMY, SB HUNT, WA HARRIS, AH AF KANDASAMY, SB HUNT, WA HARRIS, AH TI ROLE OF NEUROTENSIN IN RADIATION-INDUCED HYPOTHERMIA IN RATS SO RADIATION RESEARCH LA English DT Article ID STIMULATES HISTAMINE-RELEASE; CENTRAL NERVOUS-SYSTEM; REGIONAL DISTRIBUTION; HYPOTHALAMIC PEPTIDE; HUMAN-BRAIN; MAST-CELLS; 5-HYDROXYTRYPTAMINE; ANTIHISTAMINE; SOMATOSTATIN; RECEPTORS RP KANDASAMY, SB (reprint author), USAF,RADIOBIOL RES INST,DEPT BEHAV SCI,BETHESDA,MD 20814, USA. NR 46 TC 6 Z9 6 U1 0 U2 0 PU RADIATION RESEARCH SOC PI OAK BROOK PA 2021 SPRING RD, STE 600, OAK BROOK, IL 60521 SN 0033-7587 J9 RADIAT RES JI Radiat. Res. PD MAY PY 1991 VL 126 IS 2 BP 218 EP 222 DI 10.2307/3577821 PG 5 WC Biology; Biophysics; Radiology, Nuclear Medicine & Medical Imaging SC Life Sciences & Biomedicine - Other Topics; Biophysics; Radiology, Nuclear Medicine & Medical Imaging GA FK351 UT WOS:A1991FK35100014 PM 2023992 ER PT J AU SAMID, D MILLER, AC RIMOLDI, D GAFNER, J CLARK, EP AF SAMID, D MILLER, AC RIMOLDI, D GAFNER, J CLARK, EP TI INCREASED RADIATION-RESISTANCE IN TRANSFORMED AND NONTRANSFORMED CELLS WITH ELEVATED RAS PROTOONCOGENE EXPRESSION SO RADIATION RESEARCH LA English DT Article ID INTERFERON-INDUCED REVERTANTS; MONOCLONAL-ANTIBODIES; IONIZING-RADIATION; MOUSE CELLS; S-PHASE; HA-RAS; CANCER; RADIORESISTANT; FIBROBLASTS; SENSITIVITY C1 UNIFORMED SERV UNIV HLTH SCI,DEPT PATHOL,BETHESDA,MD 20814. USAF,RADIOBIOL RES INST,DEPT RADIAT BIOCHEM,BETHESDA,MD 20889. FU NEI NIH HHS [R03 EY08220-01] NR 44 TC 55 Z9 57 U1 0 U2 0 PU RADIATION RESEARCH SOC PI OAK BROOK PA 2021 SPRING RD, STE 600, OAK BROOK, IL 60521 SN 0033-7587 J9 RADIAT RES JI Radiat. Res. PD MAY PY 1991 VL 126 IS 2 BP 244 EP 250 DI 10.2307/3577825 PG 7 WC Biology; Biophysics; Radiology, Nuclear Medicine & Medical Imaging SC Life Sciences & Biomedicine - Other Topics; Biophysics; Radiology, Nuclear Medicine & Medical Imaging GA FK351 UT WOS:A1991FK35100018 PM 2023995 ER PT J AU TOKSOZ, MN DAINTY, AM CHARRETTE, EE AF TOKSOZ, MN DAINTY, AM CHARRETTE, EE TI SPATIAL VARIATION OF GROUND MOTION DUE TO LATERAL HETEROGENEITY SO STRUCTURAL SAFETY LA English DT Article; Proceedings Paper CT INTERNATIONAL WORKSHOP ON SPATIAL VARIATION OF EARTHQUAKE GROUND MOTION CY NOV 07-09, 1988 CL PRINCETON UNIV, DUNWALKE, NJ HO PRINCETON UNIV DE CORRELATION; GROUND MOTION; SEISMIC ANALYSIS ID FOURIER METHOD; WAVE-EQUATION; ARRAY; EARTHQUAKE AB To examine the effect of propagation on coherency of ground motion, a study of data from seismic arrays on hard rock has been carried out. In addition coherency results using finite difference seismograms for a layer over a half-space with heterogeneities are presented. The hard rock sites are three arrays in Fennoscandia; maximum array spacings are 1500-3000 m. The data analysed are S-waves from quarry blasts at ranges of 240-350 km. Analyses at 2, 4 and 6 Hz show high coherency as a function of separation compared to sites with alluvium or soil layers. Tentatively, we conclude that the decay of coherency with separation at each site follows a single relation for all frequencies if the separation is scaled by the wavelength. The two-dimensional finite difference results indicate that even with no heterogeneities the mixing of reflected P and S phases in a surface layer can substantially reduce the coherency for the vertical component if the source is below the layer. For the horizontal (radial) component, the effect of velocity heterogeneity is to reduce the coherency while layering and irregular layer interfaces have less effect, at least for sources below the layer. C1 USAF,GEOPHYS LAB,LWH,BEDFORD,MA 01731. RP TOKSOZ, MN (reprint author), MIT,DEPT EARTH ATMOSPHER & PLANETARY SCI,EARTH RESOURCES LAB,CAMBRIDGE,MA 02139, USA. NR 26 TC 4 Z9 4 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0167-4730 J9 STRUCT SAF JI Struct. Saf. PD MAY PY 1991 VL 10 IS 1-3 BP 53 EP 77 DI 10.1016/0167-4730(91)90006-U PG 25 WC Engineering, Civil SC Engineering GA FR103 UT WOS:A1991FR10300005 ER PT J AU SABANEGH, ES THOMPSON, IM AF SABANEGH, ES THOMPSON, IM TI FULGURATION OF URETHRAL CONDYLOMATA - MODIFIED TECHNIQUE USING VISUAL URETHROTOME SO UROLOGY LA English DT Article C1 USAF,JOINT MIL MED COMMAND,DEPT UROL,LACKLAND AFB,TX 78236. RP SABANEGH, ES (reprint author), WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236, USA. NR 2 TC 0 Z9 0 U1 0 U2 0 PU CAHNERS PUBL CO PI NEW YORK PA 249 WEST 17 STREET, NEW YORK, NY 10011 SN 0090-4295 J9 UROLOGY JI UROLOGY PD MAY PY 1991 SI SI BP 28 EP 28 PG 1 WC Urology & Nephrology SC Urology & Nephrology GA FL641 UT WOS:A1991FL64100015 ER PT J AU CLARK, FO LAUREIJS, RJ PRUSTI, T AF CLARK, FO LAUREIJS, RJ PRUSTI, T TI THE TEMPERATURE OF LARGE DUST GRAINS IN MOLECULAR CLOUDS SO ASTROPHYSICAL JOURNAL LA English DT Article DE INTERSTELLAR, GRAINS; INTERSTELLAR, MOLECULES ID INFRARED-EMISSION; THERMAL EMISSION; GAS EMISSION; IRAS; GLOBULES; HYDROGEN; DENSITY; TAURUS AB The temperature of the large dust grains is calculated from three molecular clouds ranging in visual extinction from 2.5 to 8 mag, by comparing maps of either extinction derived from star counts or gas column density derived from molecular observations to I100. Both techniques show the dust temperature declining into clouds. The two techniques do not agree in absolute scale. C1 CALTECH, JET PROP LAB, CTR INFRARED PROC & ANAL, PASADENA, CA 91109 USA. LAB SPACE RES, 9700 AV GRONINGEN, NETHERLANDS. RP CLARK, FO (reprint author), USAF, GL, OPC, BEDFORD, MA 01731 USA. NR 30 TC 9 Z9 9 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD APR 20 PY 1991 VL 371 IS 2 BP 602 EP 606 DI 10.1086/169924 PN 1 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA FF983 UT WOS:A1991FF98300016 ER PT J AU MANASREH, MO FISCHER, DW EVANS, KR STUTZ, CE AF MANASREH, MO FISCHER, DW EVANS, KR STUTZ, CE TI ANOMALOUS BEHAVIOR OF CYCLOTRON-RESONANCE IN GAAS/AL0.28GA0.72AS HIGH-ELECTRON-MOBILITY TRANSISTOR STRUCTURES SO PHYSICAL REVIEW B LA English DT Article ID EXTREME QUANTUM LIMIT; QUANTIZED HALL CONDUCTANCE; MAGNETIC-FIELDS; WELL STRUCTURES; GAAS; HETEROJUNCTIONS; HETEROSTRUCTURES; LINEWIDTH; CONDUCTIVITY; RESISTANCE AB Infrared cyclotron-resonance measurements were obtained for a two-dimensional electron gas (2DEG) in GaAs/Al0.28Ga0.72As high-electron-mobility transistor structures at 5 K. The relaxation time and concentration of the 2DEG were extracted from fitting the cyclotron-resonance transmission spectra with a transmissivity equation based on a Drude-type model. The effective mass, relaxation time, full width at half maximum, amplitude, total integrated absorption, and the concentration (n(s)) of the 2DEG are shown to oscillate as a function of the magnetic field. The total integrated absorption of the cyclotron resonance and the n(s) value extracted from fitting the transmissivity equation to the cyclotron-resonance spectra exhibit similar behavior as the magnetic field is increased. The oscillation of n(s) with the magnetic field suggests that screening effects are not negligible. Furthermore, the oscillations of the above parameters seem to provide qualitative information about the influence of the ion-electron interactions on the far-infrared cyclotron-resonance spectra. C1 USAF,MAT LAB,WRIGHT PATTERSON AFB,OH 45433. RP MANASREH, MO (reprint author), USAF,WRIGHT RES & DEV CTR,ELECTR TECHNOL LAB,WRIGHT PATTERSON AFB,OH 45433, USA. NR 45 TC 16 Z9 16 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD APR 15 PY 1991 VL 43 IS 12 BP 9772 EP 9776 DI 10.1103/PhysRevB.43.9772 PG 5 WC Physics, Condensed Matter SC Physics GA FK191 UT WOS:A1991FK19100046 ER PT J AU MANASREH, MO SZMULOWICZ, F VAUGHAN, T EVANS, KR STUTZ, CE FISCHER, DW AF MANASREH, MO SZMULOWICZ, F VAUGHAN, T EVANS, KR STUTZ, CE FISCHER, DW TI ORIGIN OF THE BLUESHIFT IN THE INTERSUBBAND INFRARED-ABSORPTION IN GAAS/AL0.3GA0.7AS MULTIPLE QUANTUM-WELLS SO PHYSICAL REVIEW B LA English DT Note ID GAAS; TRANSITIONS; EXCHANGE; DETECTOR AB The intersubband transition (IT) in GaAs/Al0.3Ga0.7As multiple-quantum-well samples measured by the infrared-absorption technique at 5 K is studied as a function of the two-dimensional electron-gas density (sigma). A blueshift in the peak-position energy of the IT is observed as sigma-increases. Single-particle calculations of the optical-absorption spectra, which are obtained by using the nonparabolic-anisotropic envelope-function approximation (EFA), indicate that the peak-position energy should show a redshift as sigma is increased. We found that it is necessary to incorporate many-body corrections (in particular electron-electron intrasubband exchange and direct Coulomb interaction energies), depolarization, and excitonlike shifts in the EFA calculations in order to account for the experimental peak-position energy and blueshift as sigma is increased. C1 UNIV DAYTON,RES INST,DAYTON,OH 45469. RP MANASREH, MO (reprint author), USAF,WRIGHT LAB,ELECTR TECHNOL DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 21 TC 50 Z9 50 U1 2 U2 2 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD APR 15 PY 1991 VL 43 IS 12 BP 9996 EP 9999 DI 10.1103/PhysRevB.43.9996 PG 4 WC Physics, Condensed Matter SC Physics GA FK191 UT WOS:A1991FK19100082 ER PT J AU TAN, LS ARNOLD, FE AF TAN, LS ARNOLD, FE TI INSITU MOLECULAR COMPOSITES .2. SYNTHESIS AND CHARACTERIZATION OF POLY(AMIC DIALKYLAMIDES) IMPREGNATED WITH THERMOSETTABLE SECONDARY-AMINES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USAF,MAT LAB,WRDC,MLBP,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 9 EP POLY PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400825 ER PT J AU TAN, LS JONES, EG SOLOSKI, EJ BENNER, CL LEE, CYC ARNOLD, FE AF TAN, LS JONES, EG SOLOSKI, EJ BENNER, CL LEE, CYC ARNOLD, FE TI INSITU MOLECULAR COMPOSITES .3. THE EFFECT OF THE R-GROUPS ON THE IMIDIZATION OF POLY(AMIC DIALKYLAMIDES) SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SYST RES LABS INC,DAYTON,OH 45440. USAF,MAT LAB,WRDC,MLBP,WRIGHT PATTERSON AFB,OH 45433. UNIV DAYTON,RES INST,DAYTON,OH 45469. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 10 EP POLY PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400826 ER PT J AU LEE, CYC CHEN, YF TAN, LS ARNOLD, FE AF LEE, CYC CHEN, YF TAN, LS ARNOLD, FE TI INSITU MOLECULAR COMPOSITES - RELATIONSHIPS OF RHEOLOGY TO ROD FORMATION OF POLY(AMIC DIALKYLAMIDES) SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ADTECH SYST RES INC,DAYTON,OH 45432. USAF,MAT LAB,WRDC,MLBP,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 11 EP POLY PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400827 ER PT J AU HUH, WS LEE, CYC AF HUH, WS LEE, CYC TI COAGULATION AND PHASE-BEHAVIOR OF ROD COIL SOLVENT TERNARY-SYSTEMS OF VARYING INTERMOLECULAR INTERACTION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV DAYTON,RES INST,DAYTON,OH 45469. USAF,MAT LAB,WRDC,MLBP,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 20 EP POLY PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400836 ER PT J AU STETTER, JR PENROSE, WR MACLAY, GJ CAO, Z AF STETTER, JR PENROSE, WR MACLAY, GJ CAO, Z TI THE AMPEROMETRIC GAS SENSOR - ONE ELECTROANALYTICAL SOLUTION FOR POLLUTION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 TRANSDUCER RES INC,NAPERVILLE,IL 60540. IIT,CHICAGO,IL 60616. USAF,BROOKS AFB,TX 78235. US EPA,AREAL,RES TRIANGLE PK,NC 27711. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 64 EP ENVR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301447 ER PT J AU WANG, CS BURKETT, J LEE, CYC ARNOLD, FE AF WANG, CS BURKETT, J LEE, CYC ARNOLD, FE TI ELECTRICAL-CONDUCTIVITY OF HETEROCYCLIC AROMATIC RIGID-ROD AND LADDER POLYMERS - THE EFFECT OF ION-IMPLANTATION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USAF,WRDC,MLBP,MAT LAB,WRIGHT PATTERSON AFB,OH 45433. UNIV DAYTON,RES INST,DAYTON,OH 45469. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 101 EP PMSE PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89401267 ER PT J AU KWON, KW JERMYN, H MAYFIELD, H AF KWON, KW JERMYN, H MAYFIELD, H TI KINETICS OF THE REMOVAL OF HEAVY-METALS BY DOWEX XFS-4195-02 ION-EXCHANGE RESIN AND THE REGENERATION OF THE RESIN BY NH4OH SOLUTION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 AFESC,RDVS,HQ,TYNDALL AFB,FL 32403. TUSKEGEE UNIV,DEPT CHEM ENGN,TUSKEGEE,AL 36088. NR 0 TC 0 Z9 0 U1 1 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 116 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301867 ER PT J AU WRIGHT, JR AF WRIGHT, JR TI HISTORY OF THE UNITED-STATES INVOLVEMENT IN THE CHEMISTRY OLYMPIAD SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USAF ACAD,SCH PREP,COLORADO SPRINGS,CO 80840. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 116 EP CHED PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89300796 ER PT J AU RICHERT, SA ERSTFELD, TE AF RICHERT, SA ERSTFELD, TE TI THE UNITED-STATES-NATIONAL-CHEMISTRY-OLYMPIAD STUDY CAMP SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USAF ACAD,DEPT CHEM,COLORADO SPRINGS,CO 80840. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 119 EP CHED PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89300799 ER PT J AU SMITH, PJ AF SMITH, PJ TI WHAT IS HIGH-SCHOOL CHEMISTRY - WHAT SHOULD IT BE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USAF ACAD,AIR ACAD HIGH SCH,DEPT SCI,COLORADO SPRINGS,CO 80840. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 146 EP CHED PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89300825 ER PT J AU MILLER, AS MILLER, TM AF MILLER, AS MILLER, TM TI GAS-PHASE ELECTRON-ATTACHMENT TO TRANSITION-METAL HYDRIDES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV OKLAHOMA,NORMAN,OK 73019. USAF,GEOPHYS LAB,LID,BEDFORD,MA 01731. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 189 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400694 ER PT J AU MORRIS, RA VIGGIANO, AA VANDOREN, JM PAULSON, JF AF MORRIS, RA VIGGIANO, AA VANDOREN, JM PAULSON, JF TI TEMPERATURE DEPENDENCES OF RATE CONSTANTS FOR REACTIONS OF H2O+ WITH HALOCARBONS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USAF,GEOPHYS LAB,LID,BEDFORD,MA 01731. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 191 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400696 ER PT J AU TAN, LS ARNOLD, FE AF TAN, LS ARNOLD, FE TI INSITU MOLECULAR COMPOSITES .1. CONCEPT AND SYNTHESIS OF DIALKYLAMINES AND N-ETHYL BENZYLAMINES CONTAINING ETHYNYL, PHENYLETHYNYL, NADIC AND BENZOCYCLOBUTENENYL GROUPS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USAF,WRIGHT RES & DEV CTR,MLBP,MAT LAB,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 345 EP POLY PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89401154 ER PT J AU AINA, O MATTINGLY, M BATES, JR COGGINS, A OCONNOR, J SHASTRY, SK SALERNO, JP DAVIS, A LORENZO, JP JONES, KS AF AINA, O MATTINGLY, M BATES, JR COGGINS, A OCONNOR, J SHASTRY, SK SALERNO, JP DAVIS, A LORENZO, JP JONES, KS TI HIGH-PURITY INP GROWN ON SI BY ORGANOMETALLIC VAPOR-PHASE EPITAXY SO APPLIED PHYSICS LETTERS LA English DT Article ID SILICON SUBSTRATE AB We have grown by organometallic vapor phase epitaxy high-purity InP on Si substrates using a GaAs intermediate layer. The InP layers exhibit residual electron concentration as low as 5 x 10(14) cm-3 and electron mobilities as high as 4000 and 25 000 cm2/V s at 300 and 77 K, respectively. The achieved InP quality is dependent on the GaAs intermediate layer thickness. These excellent electrical properties are due to high crystal qualities as evidenced by x-ray rocking curve half width as low as 215 arcsec and defect densities on the order 10(8) cm-2. p/n junctions, with ideality factors as low as 1.6 and low leakage currents, confirm the device quality of this material. C1 KOPIN CORP,TAUNTON,MA 02780. USAF,ROME AIR DEV CTR,ESO,BEDFORD,MA 01731. UNIV FLORIDA,DEPT MAT SCI,GAINESVILLE,FL 32611. RP AINA, O (reprint author), ALLIED SIGNAL AEROSP CO,CTR AEROSP TECHNOL,9140 OLD ANNAPOLIS RD,COLUMBIA,MD 21045, USA. NR 5 TC 8 Z9 8 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD APR 8 PY 1991 VL 58 IS 14 BP 1554 EP 1556 DI 10.1063/1.105245 PG 3 WC Physics, Applied SC Physics GA FF231 UT WOS:A1991FF23100034 ER PT J AU DENNIS, ST PALAZOTTO, AN AF DENNIS, ST PALAZOTTO, AN TI LAMINATED SHELL IN CYLINDRICAL BENDING, 2-DIMENSIONAL APPROACH VS EXACT SO AIAA JOURNAL LA English DT Note ID SHEAR DEFORMATION C1 USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433. RP DENNIS, ST (reprint author), USAF ACAD,ENGN MECH,COLORADO SPRINGS,CO 80840, USA. NR 5 TC 27 Z9 28 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0001-1452 J9 AIAA J JI AIAA J. PD APR PY 1991 VL 29 IS 4 BP 647 EP 650 DI 10.2514/3.10634 PG 4 WC Engineering, Aerospace SC Engineering GA FJ316 UT WOS:A1991FJ31600025 ER PT J AU STRATTON, RF AF STRATTON, RF TI TEEBI HYPERTELORISM SYNDROME (BRACHYCEPHALOFRONTONASAL DYSPLASIA) IN A UNITED-STATES FAMILY SO AMERICAN JOURNAL OF MEDICAL GENETICS LA English DT Article DE AUTOSOMAL DOMINANT INHERITANCE; CRANIOFRONTONASAL DYSPLASIA; MALE TO MALE TRANSMISSION ID CRANIOFRONTONASAL DYSPLASIA AB Teebi (Am J Med Genet 28:581-591, 1987) described a pattern of anomalies in an Arab kindred involving 16 individuals in 4 generations. Although some findings were similar to those in craniofrontonasal dysplasia, absence of craniosynostosis, normal to slightly broad nasal tip, normal nails, and male to male transmission distinguished this as a separate entity. This paper describes a U.S. family with similar findings, involving 6 individuals (2 male and 4 female) in 4 generations, with male to male transmission. RP STRATTON, RF (reprint author), WILFORD HALL USAF MED CTR,DEPT PEDIAT,LACKLAND AFB,TX 78236, USA. NR 14 TC 16 Z9 16 U1 0 U2 0 PU WILEY-LISS PI NEW YORK PA DIV JOHN WILEY & SONS INC 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0148-7299 J9 AM J MED GENET JI Am. J. Med. Genet. PD APR 1 PY 1991 VL 39 IS 1 BP 78 EP 80 DI 10.1002/ajmg.1320390117 PG 3 WC Genetics & Heredity SC Genetics & Heredity GA FC827 UT WOS:A1991FC82700016 PM 1867268 ER PT J AU KIRKHAM, DM AF KIRKHAM, DM TI SOVIET-AMERICAN DIALOG ON THE NEW-DEAL - GRAHAM,OL SO AMERICAN STUDIES INTERNATIONAL LA English DT Book Review RP KIRKHAM, DM (reprint author), USAF ACAD,COLORADO SPRINGS,CO 80840, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU GEORGE WASHINGTON UNIV PI WASHINGTON PA AMERICAN STUDIES PROGRAM, WASHINGTON, DC 20052 SN 0003-1321 J9 AM STUD INT JI Am. Stud. Int. PD APR PY 1991 VL 29 IS 1 BP 87 EP 87 PG 1 WC History SC History GA FG015 UT WOS:A1991FG01500013 ER PT J AU OLSON, RA PARKER, JH AF OLSON, RA PARKER, JH TI CARBON-ARC SOLAR SIMULATOR SO APPLIED OPTICS LA English DT Article DE CARBON ARC; SOLAR SIMULATOR; SPECTRAL IRRADIANCE; LASER WARNING RECEIVER AB Measurements of the spatial, spectral, and temporal characteristics of the beam irradiance of a carbon arc solar simulator are reported. Pyroelectric radiometer measurements of total irradiance and spectroradiometer measurements of spectral irradiance are presented. The solar simulator spectral irradiance is compared with the ASTM standard AM 1.5 global solar spectral irradiance over a wavelength region of 300-2500 nm. The suitability of the solar simulator for laser receiver testing is discussed. C1 USAF,WRIGHT RES & DEV CTR,AVION LAB,WRIGHT PATTERSON AFB,OH 45433. RP OLSON, RA (reprint author), SCHWARTZ ELECTROOPT INC,3404 N ORANGE BLOSSOM TRAIL,ORLANDO,FL 32804, USA. NR 3 TC 3 Z9 4 U1 0 U2 1 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD APR 1 PY 1991 VL 30 IS 10 BP 1290 EP 1293 PG 4 WC Optics SC Optics GA FG122 UT WOS:A1991FG12200022 PM 20582141 ER PT J AU MILUM, EA AF MILUM, EA TI A SOLITARY PIGMENTED TUMOR OF THE FACE SO ARCHIVES OF DERMATOLOGY LA English DT Note ID APOCRINE HIDROCYSTOMA; CYSTADENOMA RP MILUM, EA (reprint author), USAF,LACKLAND AFB,TX 78236, USA. NR 8 TC 0 Z9 0 U1 0 U2 0 PU AMER MEDICAL ASSOC PI CHICAGO PA 515 N STATE ST, CHICAGO, IL 60610 SN 0003-987X J9 ARCH DERMATOL JI Arch. Dermatol. PD APR PY 1991 VL 127 IS 4 BP 571 EP & PG 0 WC Dermatology SC Dermatology GA FF033 UT WOS:A1991FF03300018 ER PT J AU ENGELKEN, EJ STEVENS, KW ENDERLE, JD AF ENGELKEN, EJ STEVENS, KW ENDERLE, JD TI RELATIONSHIPS BETWEEN MANUAL REACTION-TIME AND SACCADE LATENCY IN RESPONSE TO VISUAL AND AUDITORY-STIMULI SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article ID SUPERIOR COLLICULUS; EYE-MOVEMENTS AB Manual reaction time (RT) responses were analyzed from seven human subjects. Responses were recorded using four kinds of target presentations: fixed visual target, moving visual target, fixed auditory target, and moving auditory target. Moving targets (moving in the horizontal plane) were presented at constant intensity and provided only a motion cue. Fixed targets "popped on" at the primary position and provided only an onset cue. RTs for the fixed and moving visual targets were 241.5 ms and 233.1 ms, respectively. The 8.4 ms (3.5%) advantage for the moving visual target over the fixed visual target was statistically significant, p < 0.05. RT for the moving auditory target varied with target movement amplitude and ranged from 219 ms for 40-degrees movements to 268 ms for 5-degrees movements. For the fixed auditory target in the sagittal plane, average RT was 182.9 ms. Thus, sound-source motion detection was from 36 to 85 ms slower than sound onset detection, p < 0.001. The RT results were compared to saccade latency measurements from an earlier study. Both RT and saccade latency showed the same dependency upon target movement amplitude. For small target displacements, saccade latencies for the moving auditory target were longer than for the moving visual target. The longer latencies for the moving auditory target are attributed to the increased processing time required to detect the sound-source motion. C1 N DAKOTA STATE UNIV,DIV BIOMED ENGN,FARGO,ND 58105. RP ENGELKEN, EJ (reprint author), USAF,SCH AEROSP MED,DIV CLIN SCI,NGFO,BROOKS AFB,TX 78235, USA. NR 15 TC 3 Z9 3 U1 0 U2 1 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD APR PY 1991 VL 62 IS 4 BP 315 EP 318 PG 4 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA FD439 UT WOS:A1991FD43900006 PM 2031632 ER PT J AU WEINSTEIN, LF PREVIC, FH SIMPSON, CG LYONS, TJ GILLINGHAM, KK AF WEINSTEIN, LF PREVIC, FH SIMPSON, CG LYONS, TJ GILLINGHAM, KK TI A TEST OF THUMB AND INDEX FINGER CONTROL IN OVERCOMING A VISUAL ANALOG OF THE GIANT HAND ILLUSION SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article AB Anecdotal evidence suggests that a thumb and index finger grip might facilitate recovery from the manifestation of spatial disorientation known as the giant hand phenomenon. Sixteen pilots volunteered as subjects in an experiment that compared the effectiveness of the thumb and index finger versus the whole hand technique to overcome a visually-induced analogue of the giant hand phenomenon. Thumb and index finger control produced greater stability overall, but did not overcome the specific tracking bias induced by a background visual roll stimulus. Various hypotheses are discussed as to why the thumb and index finger technique was ineffective in the present instance. C1 USAF,SCH AEROSP MED,BROOKS AFB,TX 78235. NR 11 TC 6 Z9 6 U1 0 U2 0 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD APR PY 1991 VL 62 IS 4 BP 336 EP 341 PG 6 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA FD439 UT WOS:A1991FD43900011 PM 2031637 ER PT J AU PELSTRING, RJ ZELLMER, RB SULAK, LE BANKS, PM CLARE, N AF PELSTRING, RJ ZELLMER, RB SULAK, LE BANKS, PM CLARE, N TI HODGKINS-DISEASE IN ASSOCIATION WITH HUMAN-IMMUNODEFICIENCY-VIRUS INFECTION - PATHOLOGICAL AND IMMUNOLOGICAL FEATURES SO CANCER LA English DT Article ID IMMUNE-DEFICIENCY SYNDROME; HOMOSEXUAL MEN; MALIGNANT-LYMPHOMAS; SYNDROME AIDS; HIV INFECTION; LYMPHOCYTE-T; LYMPHADENOPATHY; EXPERIENCE; DISORDERS; NEOPLASIA AB Six patients with Hodgkin's disease (HD) and demonstrable serum antibodies to human immunodeficiency virus (HIV) and two additional patients with HD belonging to HIV-associated high-risk groups but with negative HIV serology were studied. All patients were men and ranged in age from 21 to 45 years. The HIV risk factors included homosexuality (6), intravenous drug abuse (2), and hemophilia A (1). All patients had high pathologically determined stage (one Stage III and seven Stage IV), and bone marrow involvement was observed in five patients with the initial diagnosis of HD based on marrow biopsy in two cases. Four cases were histologically subclassified as mixed cellularity (MC) and three as nodular sclerosis (NS); one patient underwent only bone marrow biopsy and was not subclassified. Histologically all cases were characterized by numerous Reed-Sternberg cells and variants, and with the exception of one case, all had a distinctive decrease in the proportion of reactive background lymphocytes compared with what is usually expected in MC or NS Hodgkin's disease (relative lymphocyte depletion). Flow-cytometric immunophenotypic studies done on cell suspensions from diagnostic lymph node biopsies in four cases showed decreased CD4:CD8 ratios (mean = 1.4) compared with expected values of 4 to 6. The relative lymphocyte depletion observed histologically is probably a reflection of the decreased tissue CD4:CD8 ratios, and this impairment of host immune response may be related to the observed high stage in all eight cases. Patients with high stage HD and the described histologic and immunologic features should be evaluated for the presence of HIV infection. C1 UNIV TEXAS,HLTH SCI CTR,DEPT PATHOL,7703 FLOYD CURL DR,SAN ANTONIO,TX 78284. WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. NR 65 TC 43 Z9 43 U1 1 U2 1 PU WILEY-LISS PI NEW YORK PA DIV JOHN WILEY & SONS INC 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0008-543X J9 CANCER JI Cancer PD APR 1 PY 1991 VL 67 IS 7 BP 1865 EP 1873 DI 10.1002/1097-0142(19910401)67:7<1865::AID-CNCR2820670709>3.0.CO;2-F PG 9 WC Oncology SC Oncology GA FC976 UT WOS:A1991FC97600008 PM 2004300 ER PT J AU BABIRAK, SP AF BABIRAK, SP TI LIMITED EFFECT OF GEMFIBROZIL IN LIPOPROTEIN-LIPASE DEFICIENT HETEROZYGOTES SO CLINICAL RESEARCH LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,SAN ANTONIO,TX. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SLACK INC PI THOROFARE PA 6900 GROVE RD, THOROFARE, NJ 08086 USA SN 0009-9279 J9 CLIN RES JI Clin. Res. PD APR PY 1991 VL 39 IS 2 BP A446 EP A446 PG 1 WC Medicine, Research & Experimental SC Research & Experimental Medicine GA FH323 UT WOS:A1991FH32301737 ER PT J AU JACOCKS, CW LAVEAU, PJ MEISSNER, FW MCWHIRTER, PD LUCCA, MJ SPACCAVENTO, LJ AF JACOCKS, CW LAVEAU, PJ MEISSNER, FW MCWHIRTER, PD LUCCA, MJ SPACCAVENTO, LJ TI THE EFFECT OF MENTAL STRESS ON CORONARY-ARTERY DIAMETER IN PATIENTS WITH CORONARY-ARTERY DISEASE SO CLINICAL RESEARCH LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SLACK INC PI THOROFARE PA 6900 GROVE RD, THOROFARE, NJ 08086 USA SN 0009-9279 J9 CLIN RES JI Clin. Res. PD APR PY 1991 VL 39 IS 2 BP A399 EP A399 PG 1 WC Medicine, Research & Experimental SC Research & Experimental Medicine GA FH323 UT WOS:A1991FH32301460 ER PT J AU LUCEY, DR MCGUIRE, SA CLERICI, M HENDRIX, CW HALL, K BENTON, J BUTZIN, CA WARD, WW SHEARER, GM BOSWELL, RN AF LUCEY, DR MCGUIRE, SA CLERICI, M HENDRIX, CW HALL, K BENTON, J BUTZIN, CA WARD, WW SHEARER, GM BOSWELL, RN TI SPINAL-FLUID BETA2-MICROGLOBULIN IN 163 NEUROLOGICALLY ASYMPTOMATIC ADULTS WITH HUMAN-IMMUNODEFICIENCY-VIRUS INFECTION SO CLINICAL RESEARCH LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,SAN ANTONIO,TX. NCI,BETHESDA,MD 20892. RI Hendrix, Craig/G-4182-2014 OI Hendrix, Craig/0000-0002-5696-8665 NR 0 TC 0 Z9 0 U1 0 U2 0 PU SLACK INC PI THOROFARE PA 6900 GROVE RD, THOROFARE, NJ 08086 USA SN 0009-9279 J9 CLIN RES JI Clin. Res. PD APR PY 1991 VL 39 IS 2 BP A145 EP A145 PG 1 WC Medicine, Research & Experimental SC Research & Experimental Medicine GA FH323 UT WOS:A1991FH32300025 ER PT J AU MCWHIRTER, PD MEISSNER, FW WEILAND, F JACOCKS, CW SPACCAVENTO, LJ LAVEAU, PJ AF MCWHIRTER, PD MEISSNER, FW WEILAND, F JACOCKS, CW SPACCAVENTO, LJ LAVEAU, PJ TI THE EFFECT OF PROVOCATIVE MENTAL STRESS-TESTING ON LEFT-VENTRICULAR CONTRACTILITY IN PATIENTS WITH KNOWN CORONARY-ARTERY DISEASE SO CLINICAL RESEARCH LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SLACK INC PI THOROFARE PA 6900 GROVE RD, THOROFARE, NJ 08086 USA SN 0009-9279 J9 CLIN RES JI Clin. Res. PD APR PY 1991 VL 39 IS 2 BP A402 EP A402 PG 1 WC Medicine, Research & Experimental SC Research & Experimental Medicine GA FH323 UT WOS:A1991FH32301473 ER PT J AU NAVRATIL, DL LAVEAU, PJ SPACCAVENTO, LJ AF NAVRATIL, DL LAVEAU, PJ SPACCAVENTO, LJ TI EFFICACY AND SAFETY OF 3 ORAL RECAINAM DOSES IN THE SUPPRESSION OF LIFE-THREATENING VENTRICULAR TACHYARRHYTHMIAS SO CLINICAL RESEARCH LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,SAN ANTONIO,TX. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SLACK INC PI THOROFARE PA 6900 GROVE RD, THOROFARE, NJ 08086 USA SN 0009-9279 J9 CLIN RES JI Clin. Res. PD APR PY 1991 VL 39 IS 2 BP A402 EP A402 PG 1 WC Medicine, Research & Experimental SC Research & Experimental Medicine GA FH323 UT WOS:A1991FH32301476 ER PT J AU DIXON, TK BOWMAN, JS SAGO, AL JAFFERS, G AF DIXON, TK BOWMAN, JS SAGO, AL JAFFERS, G TI A SAFER RENAL-ALLOGRAFT NEEDLE-BIOPSY SO CLINICAL TRANSPLANTATION LA English DT Article DE KIDNEY; BIOPSY; TRANSPLANT; ALLOGRAFT AB Histologic tissue evaluation remains the most accurate method for the assessment of renal allograft dysfunction, even though numerous noninvasive techniques exist. Reliable biopsy techniques have previously consisted of surgical biopsy or Tru-cut (14 g) needle biopsy. Complications are infrequent but serious complications have prevented wide-spread use and thus management of acute allograft dysfunction often entails monitoring clinical responses to empiric therapy based on nonspecific findings from noninvasive studies. We performed percutaneous renal allograft biopsies using the Bard Biopty Gun (18 g) needle with ultrasound guidance and compared the results with prior percutaneous Tru-cut needle biopsies. Using the Biopty technique, 128 allograft biopsies were performed and compared to 121 prior Tru-cut needle biopsies. The Biopty technique resulted in one (0.8%) major complication, a perinephric hematoma, as compared to 7 (5.8%) major complications, including loss of 2 (1.7%) allografts, with Tru-cut needle biopsies. The Bard Biopty needle technique offers a method to provide safer renal allograft biopsies that can be repeated at frequent intervals, facilitating accurate assessment of allograft dysfunction. RP DIXON, TK (reprint author), WILFORD HALL USAF MED CTR,DEPT SURG TRANSPLANTAT & DEPT UROL,SAN ANTONIO,TX, USA. NR 0 TC 5 Z9 5 U1 0 U2 0 PU MUNKSGAARD INT PUBL LTD PI COPENHAGEN PA 35 NORRE SOGADE, PO BOX 2148, DK-1016 COPENHAGEN, DENMARK SN 0902-0063 J9 CLIN TRANSPLANT JI Clin. Transplant. PD APR PY 1991 VL 5 IS 2 BP 126 EP 128 PN 1 PG 3 WC Surgery; Transplantation SC Surgery; Transplantation GA FH343 UT WOS:A1991FH34300009 ER PT J AU BROCK, JR AF BROCK, JR TI TEACHING TOOLS - A PUBLIC-GOODS EXPERIMENT FOR THE CLASSROOM SO ECONOMIC INQUIRY LA English DT Article RP BROCK, JR (reprint author), USAF ACAD,DEPT ECON,COLORADO SPRINGS,CO 80840, USA. NR 11 TC 5 Z9 5 U1 0 U2 0 PU WESTERN ECONOMIC ASSOC INT PI HUNTINGTON BEACH PA 7400 CENTER AVE SUITE 109, HUNTINGTON BEACH, CA 92647-3039 SN 0095-2583 J9 ECON INQ JI Econ. Inq. PD APR PY 1991 VL 29 IS 2 BP 395 EP 401 PG 7 WC Economics SC Business & Economics GA FF289 UT WOS:A1991FF28900014 ER PT J AU KNIPP, DJ RICHMOND, AD EMERY, B CROOKER, NU DELABEAUJARDIERE, O EVANS, D KROEHL, H AF KNIPP, DJ RICHMOND, AD EMERY, B CROOKER, NU DELABEAUJARDIERE, O EVANS, D KROEHL, H TI IONOSPHERIC CONVECTION RESPONSE TO CHANGING IMF DIRECTION SO GEOPHYSICAL RESEARCH LETTERS LA English DT Article ID INTERPLANETARY MAGNETIC-FIELD; MAPPING ELECTRODYNAMIC FEATURES; HIGH-LATITUDE IONOSPHERE; ELECTRIC-FIELD; LOCALIZED OBSERVATIONS; PATTERNS AB By combining ground-based and satellite-based measurements of ionospheric electric fields, conductivities and magnetic perturbations, we are able to examine the characteristics of instantaneous, ionospheric convection patterns associated with changing directions of the Interplanetary Magnetic Field (IMF). In response to a rapid southward-to-northward turning of the IMF on 23 July 1983, the ionospheric convection reconfigured over a period of 40 minutes. The configuration changed from a conventional two-cell pattern to a contracted four-cell pattern, with reversed convection cells in the high-latitude dayside, associated with a strong potential drop of about 75 kV. Later, in response to a gradual rotation of the IMF from the +Z through the -Y toward the -Z direction, the nightside cells disappeared and the dawn cell in the reversed pair wrapped around and displaced the dusk cell until a conventional two-cell pattern was reestablished, largely in accord with the qualitative model of Crooker [1988]. Our results suggest that multiple cells can arise as a result of strong southward to northward transitions in the IMF. They appear to persist for sometime thereafter. C1 NATL CTR ATMOSPHER RES,HIGH ALTITUDE OBSERV,BOULDER,CO 80307. GEOPHYS LAB,DIV SPACE PHYS,WASHINGTON,DC. SRI INT,MENLO PK,CA 94025. NASA,DIV SPACE PHYS,WASHINGTON,DC 20546. NOAA,NATL GEOPHYS DATA CTR,BOULDER,CO 80303. RP KNIPP, DJ (reprint author), USAF ACAD,DEPT PHYS,COLORADO SPRINGS,CO 80840, USA. NR 20 TC 56 Z9 56 U1 0 U2 1 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0094-8276 J9 GEOPHYS RES LETT JI Geophys. Res. Lett. PD APR PY 1991 VL 18 IS 4 BP 721 EP 724 DI 10.1029/90GL02592 PG 4 WC Geosciences, Multidisciplinary SC Geology GA FG828 UT WOS:A1991FG82800037 ER PT J AU GOUDA, MG MULTARI, NJ AF GOUDA, MG MULTARI, NJ TI STABILIZING COMMUNICATION PROTOCOLS SO IEEE TRANSACTIONS ON COMPUTERS LA English DT Article DE COMMUNICATION PROTOCOLS; CONVERGENCE; FORMAL VERIFICATION; SELF-STABILIZATION; SLIDING-WINDOW PROTOCOL; 2-WAY HANDSHAKE AB A communication protocol is stabilizing iff starting from any unsafe state (i.e., one that violates the intended invariant of the protocol), the protocol is guaranteed to converge to a safe state within a finite number of state transitions. Stabilization allows the processes in a protocol to reestablish coordination between one another, whenever coordination is lost due to some failure. In this paper, we identify some important characteristics of stabilizing protocols; we show in particular that a stabilizing protocol is nonterminating, has an infinite number of safe states, and has timeout actions. We also propose a formal method for proving protocol stabilization: in order to prove that a given protocol is stabilizing, it is sufficient (and necessary) to exhibit and verify what we call a "convergence stair" for the protocol. Finally, we discuss how to redesign a number of well-known protocols to make them stabilizing; these include the sliding-window protocol and the two-way handshake. C1 USAF,FT BELVOIR,VA 22060. UNIV MARYLAND,COLL,COLLEGE PK,MD 20742. RP GOUDA, MG (reprint author), UNIV TEXAS,DEPT COMP SCI,AUSTIN,TX 78712, USA. NR 15 TC 80 Z9 80 U1 0 U2 1 PU IEEE COMPUTER SOC PI LOS ALAMITOS PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1264 SN 0018-9340 J9 IEEE T COMPUT JI IEEE Trans. Comput. PD APR PY 1991 VL 40 IS 4 BP 448 EP 458 DI 10.1109/12.88464 PG 11 WC Computer Science, Hardware & Architecture; Engineering, Electrical & Electronic SC Computer Science; Engineering GA FQ580 UT WOS:A1991FQ58000007 ER PT J AU NG, CF CLEVENSON, SA AF NG, CF CLEVENSON, SA TI HIGH-INTENSITY ACOUSTIC TESTS OF A THERMALLY STRESSED PLATE SO JOURNAL OF AIRCRAFT LA English DT Article AB An investigation was conducted in the Thermal Acoustic Fatigue Apparatus to study the random motion of a buckled aluminum plate exposed to heat and intense acoustic loads. Plate buckling was due to thermal stress. The plate was exposed to noise levels up to 160 dB and temperatures to 250-degrees-F. Two different thermal boundary conditions of the plate were studied; one condition with the plate clamped in a steel frame and the other with the plate insulated from the steel frame. For the second condition, the temperature distribution and buckling deflection were considerably different from the first condition. The acoustic response was also significantly different for the two boundary conditions. The general trends of the changes in resonant frequencies and random response of the plate agree with previous theoretical prediction and experimental results. RP NG, CF (reprint author), USAF,FLIGHT DYNAM LAB,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 15 Z9 17 U1 0 U2 3 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0021-8669 J9 J AIRCRAFT JI J. Aircr. PD APR PY 1991 VL 28 IS 4 BP 275 EP 281 DI 10.2514/3.46023 PG 7 WC Engineering, Aerospace SC Engineering GA FQ806 UT WOS:A1991FQ80600008 ER PT J AU STEWART, JJP AF STEWART, JJP TI OPTIMIZATION OF PARAMETERS FOR SEMIEMPIRICAL METHODS .3. EXTENSION OF PM3 TO BE, MG, ZN, GA, GE, AS, SE, CD, IN, SN, SB, TE, HG, TL, PB, AND BI SO JOURNAL OF COMPUTATIONAL CHEMISTRY LA English DT Article ID GROUND-STATES; MNDO CALCULATIONS; MOLECULAR-STRUCTURE; AM1 CALCULATIONS; SILICON AB Using a recently developed procedure for optimizing parameters for semiempirical methods, 1 PM3 has been extended to a total of 28 elements. Average DELTA-H(f) errors for the newly parameterized elements are Be: 8.6, Mg: 8.4, Zn: 5.8, Ga: 14.9, Ge: 11.4, As: 8.5, Se: 11.1, Cd: 2.6, In: 11.3, Sn: 9.0, Sb: 13.7, Te: 11.3, Hg: 6.8, Tl: 6.5, Pb: 7.4, and Bi: 10.9 kcal/mol. For some elements the paucity of data has resulted in a method, which, while highly accurate, is likely to be only poorly predictive. RP STEWART, JJP (reprint author), USAF ACAD,FRANK J SEILER RES LAB,COLORADO SPRINGS,CO 80840, USA. NR 36 TC 583 Z9 588 U1 2 U2 33 PU JOHN WILEY & SONS INC PI NEW YORK PA 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0192-8651 J9 J COMPUT CHEM JI J. Comput. Chem. PD APR PY 1991 VL 12 IS 3 BP 320 EP 341 DI 10.1002/jcc.540120306 PG 22 WC Chemistry, Multidisciplinary SC Chemistry GA FC875 UT WOS:A1991FC87500005 ER PT J AU DAVIS, LP BURGGRAF, LW STORCH, DM AF DAVIS, LP BURGGRAF, LW STORCH, DM TI HYDRATION OF SMALL ANIONS - CALCULATIONS BY THE AM1 SEMIEMPIRICAL METHOD SO JOURNAL OF COMPUTATIONAL CHEMISTRY LA English DT Article ID GAS-PHASE; SN2 REACTION; MOLECULAR-DYNAMICS; AQUEOUS-SOLUTION; GROUND-STATES; ION; ENERGIES; ABINITIO; WATER; PARAMETERS AB The AM1 semiempirical molecular orbital method has been used to calculate successive heats of hydration of small anions, including hydride, hydroxide, and the halogen ions, for cluster sizes up to 11 water molecules surrounding the central anion. Heats of hydration agree with available experimental data to within a few kcal/mol. Structures, however, do not always agree well with available ab initio calculations on clusters with one or two water molecules. The results indicate that the AM1 semiempirical technique applied to finite-sized clusters must be used with caution in understanding how hydration affects the chemical reactions of anions. C1 USAF ACAD,DEPT CHEM,COLORADO SPRINGS,CO 80840. RP DAVIS, LP (reprint author), USAF,OFF SCI RES,BOLLING AFB,WASHINGTON,DC 20332, USA. NR 38 TC 6 Z9 6 U1 0 U2 2 PU JOHN WILEY & SONS INC PI NEW YORK PA 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0192-8651 J9 J COMPUT CHEM JI J. Comput. Chem. PD APR PY 1991 VL 12 IS 3 BP 350 EP 358 DI 10.1002/jcc.540120308 PG 9 WC Chemistry, Multidisciplinary SC Chemistry GA FC875 UT WOS:A1991FC87500007 ER PT J AU MORGAN, RW CARNES, DL MONTGOMERY, S AF MORGAN, RW CARNES, DL MONTGOMERY, S TI THE SOLVENT EFFECTS OF CALCIUM HYDROXIDE IRRIGATING SOLUTION ON BOVINE PULP TISSUE SO JOURNAL OF ENDODONTICS LA English DT Article ID SODIUM-HYPOCHLORITE AB The solvent effects of calcium hydroxide irrigating solution (used alone and in combination with sodium hypochlorite) on bovine pulp tissue were studied. Forty pieces of pulp tissue weighing 90 mg each were treated with calcium hydroxide solution alone, calcium hydroxide and sodium hypochlorite alternated, sodium hypochlorite alone, and saline alone. Each piece of tissue was treated for 32 min. Desiccated pretreatment and posttreatment weights were compared. There was no significant difference between the dissolution capability of calcium hydroxide solution used alone and of saline. No significant difference was noted between calcium hydroxide solution and sodium hypochlorite used alternately, and sodium hypochlorite used alone. However, both of these groups were significantly more effective at dissolving tissue than calcium hydroxide solution alone or saline. Calcium hydroxide solution was an ineffective solvent of pulpal tissue. If tissue dissolution is desired during root canal therapy, the use of calcium hydroxide solution as the sole irrigant is no more effective than saline. C1 UNIV TEXAS,HLTH SCI CTR,DEPT ENDODONT,SAN ANTONIO,TX 78284. RP MORGAN, RW (reprint author), WILFORD HALL USAF MED CTR,DEPT ENDODONT,LACKLAND AFB,TX 78236, USA. NR 13 TC 17 Z9 20 U1 0 U2 0 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0099-2399 J9 J ENDODONT JI J. Endod. PD APR PY 1991 VL 17 IS 4 BP 165 EP 168 PG 4 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA FE561 UT WOS:A1991FE56100006 PM 1940735 ER PT J AU JONES, SE GILLIS, PP FOSTER, JC WILSON, LL AF JONES, SE GILLIS, PP FOSTER, JC WILSON, LL TI A ONE-DIMENSIONAL, 2-PHASE FLOW MODEL FOR TAYLOR IMPACT SPECIMENS SO JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY-TRANSACTIONS OF THE ASME LA English DT Article AB In this paper, a simple theoretical analysis of an old problem is presented. The analysis is more complete than earlier versions, but retains the mathematical simplicity of the earlier versions. The major thrust is to separate the material response into two phases. The first phase is dominated by strain rate effects and has a variable plastic wave speed. The second phase is dominated by strain hardening effects and has a constant plastic wave speed. Estimates for dynamic yield stress, strain, strain-rate, and plastic wave speed during both phases are given. Comparisons with several experiments on OFHC copper are included. C1 UNIV KENTUCKY,LEXINGTON,KY 40506. USAF,ARMAMENT LAB,EGLIN AFB,FL 32542. RP JONES, SE (reprint author), USAF ACAD,COLORADO SPRINGS,CO 80840, USA. NR 13 TC 17 Z9 21 U1 0 U2 3 PU ASME-AMER SOC MECHANICAL ENG PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 0094-4289 J9 J ENG MATER-T ASME JI J. Eng. Mater. Technol.-Trans. ASME PD APR PY 1991 VL 113 IS 2 BP 228 EP 235 DI 10.1115/1.2903397 PG 8 WC Engineering, Mechanical; Materials Science, Multidisciplinary SC Engineering; Materials Science GA FH665 UT WOS:A1991FH66500008 ER PT J AU VILLALON, E AF VILLALON, E TI CYCLOTRON-RESONANCE ABSORPTION IN IONOSPHERIC PLASMA SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article ID WAVES; MODE; FREQUENCY AB The mode conversion of ordinary polarized electromagnetic waves into electrostatic cyclotron waves in the inhomogeneous ionospheric plasma is investigated. Near resonance the warm plasma dispersion relation is a function of the angle theta between the geomagnetic field and the density gradient and of the wave frequency omega, where OMEGA less-than-or-equal-to omega less-than-or-equal-to 2-OMEGA and OMEGA is the electron cyclotron frequency. The differential equations describing the electric field amplitudes near the plasma resonance are studied, including damping at the second gyroharmonic. For certain values of omega and theta (e.g., theta < 45-degrees, omega approximately 2-OMEGA) the wave equations reduce to the parabolic cylinder equation. The energy transmission coefficients and power absorbed by the cyclotron waves are calculated. The vertical penetration of the plasma wave amplitudes is estimated using a WKB analysis of the wave equation. C1 USAF,GEOPHYS LAB,BEDFORD,MA 01731. RP VILLALON, E (reprint author), NORTHEASTERN UNIV,CTR ELECTROMAGNET RES,BOSTON,MA 02115, USA. NR 17 TC 0 Z9 0 U1 0 U2 0 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES JI J. Geophys. Res-Space Phys. PD APR 1 PY 1991 VL 96 IS A4 BP 5819 EP 5824 DI 10.1029/90JA02748 PG 6 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA FF828 UT WOS:A1991FF82800035 ER PT J AU CLERICI, M LANDAY, AL KESSLER, HA ZAJAC, RA BOSWELL, RN MULUK, SC SHEARER, GM AF CLERICI, M LANDAY, AL KESSLER, HA ZAJAC, RA BOSWELL, RN MULUK, SC SHEARER, GM TI MULTIPLE PATTERNS OF ALLOANTIGEN PRESENTING STIMULATING CELL DYSFUNCTION IN PATIENTS WITH AIDS SO JOURNAL OF IMMUNOLOGY LA English DT Article ID HUMAN IMMUNODEFICIENCY VIRUS; IMMUNE-DEFICIENCY SYNDROME; T-LYMPHOTROPIC VIRUS; MIXED LYMPHOCYTE-REACTION; CLASS-II ANTIGENS; MONOCYTE FUNCTION; HTLV-III/LAV; INFECTION; MACROPHAGES; EXPRESSION AB The APC/stimulating cell (APC/SC) potential of PBMC from Walter Reed stage 1 and 2 patients and patients with AIDS was tested by using these PBMC as stimulators in an allogeneic MLR. The responding cells were PBMC from unrelated, HIV- donors that were either unfractionated or depleted of APC by plastic and nylon wool adherence. Using this approach, we observed no defect in the APC/SC potential of PBMC from Walter Reed stage 1 and 2 patients. However, PBMC from AIDS patients used as allogeneic stimulators exhibited three different patterns of APC/SC function: 1) no defect in alloantigen (ALLO) APC/SC potential; 2) a defect in ALLO APC/SC function that was detected only if the responder cells were depleted of APC (presenting cell defect); and 3) a defect in ALLO APC/SC function, irrespective of whether the responder cells were depleted of APC (stimulating cell defect). These results indicate that in addition to Th cell defects associated with AIDS, the PBMC from AIDS patients can also exhibit a defect in APC/SC function. This study provides an approach that permits the testing of Ag-presenting function in all AIDS patients, and is therefore not limited to testing patients for whom HIV-, HLA-identical T cells and APC are available. C1 NCI,EXPTL IMMUNOL BRANCH,BLDG 10,ROOM 4B-17,BETHESDA,MD 20892. RUSH PRESBYTERIAN ST LUKES MED CTR,DEPT IMMUNOL MICROBIOL & MED,CHICAGO,IL 60612. WILFORD HALL USAF MED CTR,HIV UNIT,LACKLAND AFB,TX 78236. NR 36 TC 30 Z9 30 U1 0 U2 1 PU AMER ASSOC IMMUNOLOGISTS PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814 SN 0022-1767 J9 J IMMUNOL JI J. Immunol. PD APR 1 PY 1991 VL 146 IS 7 BP 2207 EP 2213 PG 7 WC Immunology SC Immunology GA FE127 UT WOS:A1991FE12700019 PM 1672347 ER PT J AU CLERICI, M LUCEY, DR ZAJAC, RA BOSWELL, RN GEBEL, HM TAKAHASHI, H BERZOFSKY, JA SHEARER, GM AF CLERICI, M LUCEY, DR ZAJAC, RA BOSWELL, RN GEBEL, HM TAKAHASHI, H BERZOFSKY, JA SHEARER, GM TI DETECTION OF CYTOTOXIC LYMPHOCYTES-T SPECIFIC FOR SYNTHETIC PEPTIDES OF GP160 IN HIV-SEROPOSITIVE INDIVIDUALS SO JOURNAL OF IMMUNOLOGY LA English DT Article ID CELL ANTIGENIC SITES; AIDS VIRUS; INFECTION; VACCINE; RECOGNITION; MOLECULE; SEQUENCE; PROTEIN; EPITOPE AB Four synthetic peptides corresponding to the IIIB sequence of gp160 of HIV were recently reported to stimulate Th cell function by PBL from HIV-infected, asymptomatic patients. In the present report, we used these same peptides to demonstrate CTL activity in a similar patient population. EBV-transformed B-cell lines from asymptomatic, HIV seropositive and seronegative control donors were pre-incubated with the peptides. Fresh PBL from 19 (76%) of 25 HIV seropositive donors lysed autologous targets pulsed with at least one of the four peptides. Autologous targets pulsed with two non-immunogenic peptides were not lysed. PBL from none of the eight HIV seronegative controls lysed peptide-preincubated autologous targets. The CTL activity was mediated by T cells, was predominantly MHC class I restricted, and was increased by in vitro restimulation of PBL with the peptides. HLA A-2 was identified as a restricting element for all four peptides in different patients, and for three of the peptides in the same donor. HLA-A1 or -B8 may also present some of the peptides. Thus, the same peptides can be recognized by human Th cells and class I MHC-restricted CTL. C1 NCI, EXPTL IMMUNOL BRANCH, BLDG 10, ROOM 4B-17, BETHESDA, MD 20892 USA. NCI, METAB BRANCH, BETHESDA, MD 20892 USA. WILFORD HALL USAF MED CTR, HIV UNIT, LACKLAND AFB, TX 78236 USA. RUSH PRESBYTERIAN ST LUKES MED CTR, DEPT IMMUNOL & MICROBIOL, CHICAGO, IL 60612 USA. NR 31 TC 174 Z9 174 U1 0 U2 1 PU AMER ASSOC IMMUNOLOGISTS PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814 SN 0022-1767 J9 J IMMUNOL JI J. Immunol. PD APR 1 PY 1991 VL 146 IS 7 BP 2214 EP 2219 PG 6 WC Immunology SC Immunology GA FE127 UT WOS:A1991FE12700020 PM 1826020 ER PT J AU JOHNSON, TD AF JOHNSON, TD TI GATHERING LAURELS IN MEXICO - THE DIARY OF AN AMERICAN SOLDIER IN THE MEXICAN-AMERICAN-WAR - SARGENT,CF SO JOURNAL OF MILITARY HISTORY LA English DT Book Review RP JOHNSON, TD (reprint author), USAF,HIST RES CTR,WASHINGTON,DC 20330, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU VIRGINIA MILITARY INST PI LEXINGTON PA LEXINGTON, VA 24450 SN 0899-3718 J9 J MILITARY HIST JI J. Mil. Hist. PD APR PY 1991 VL 55 IS 2 BP 252 EP 253 DI 10.2307/1985911 PG 2 WC History SC History GA FH415 UT WOS:A1991FH41500021 ER PT J AU KANE, JJ BURGESS, JO AF KANE, JJ BURGESS, JO TI MODIFICATION OF THE RESISTANCE FORM OF AMALGAM CORONAL-RADICULAR RESTORATIONS SO JOURNAL OF PROSTHETIC DENTISTRY LA English DT Article ID ENDODONTICALLY TREATED MOLARS; CORE TECHNIQUES; POSTERIOR TEETH; DOWEL; PINS; REINFORCEMENT; STRENGTH AB Three groups of 10 extracted endodontically treated mandibular molars were mounted in acrylic resin. The occlusal surface was reduced until a 4 mm pulp chamber height remained. A peripheral shelf 2 mm deep and 1.4 mm wide was placed on one group, while four TMS Minim pins were placed 45 degrees to the long axis of the tooth into the facial and lingual walls of the second group. The final group served as the control and had no further treatment. All teeth were then restored with amalgam. An Instron testing machine was used to apply a controlled force to the beveled amalgam at a crosshead speed of 2 mm/min until fracture occurred. A peripheral shelf did not improve the fracture resistance of the coronal-radicular restorations tested. The specimens with semihorizontal pins were significantly stronger than specimens from the other groups. Placement of pins into the pulp chamber is recommended when adequate dentin remains. C1 WILFORD HALL USAF MED CTR,DEPT GEN DENT,LACKLAND AFB,LACKLAND AFB,TX 78236. NR 19 TC 5 Z9 7 U1 0 U2 0 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0022-3913 J9 J PROSTHET DENT JI J. Prosthet. Dent. PD APR PY 1991 VL 65 IS 4 BP 470 EP 474 DI 10.1016/0022-3913(91)90281-Z PG 5 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA FE185 UT WOS:A1991FE18500004 PM 2066880 ER PT J AU KRISHNAN, S WEBER, JKR SCHIFFMAN, RA NORDINE, PC REED, RA AF KRISHNAN, S WEBER, JKR SCHIFFMAN, RA NORDINE, PC REED, RA TI REFRACTIVE-INDEX OF LIQUID ALUMINUM-OXIDE AT 0.6328 MU-M SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY LA English DT Note DE LIQUID; ALUMINUM; OXIDE; REFRACTIVE INDEX; EMISSIVITY ID LASER AB The real part, n, of the refractive index of pendant drops of laser-heated liquid Al2O3 was measured by laser ellipsometry at 0.6328-mu-m. At temperatures from 2327 to 2600 K, n for the liquid was 1.744 +/- 0.016. No significant differences were observed in the results obtained on ruby specimens and in oxygen or argon atmospheres. C1 SVERDRUP TECHNOL INC,ARNOLD AFB,TN 37389. RP KRISHNAN, S (reprint author), INTERSON INC,NORTHBROOK,IL 60062, USA. NR 12 TC 40 Z9 42 U1 0 U2 1 PU AMER CERAMIC SOC PI WESTERVILLE PA 735 CERAMIC PLACE, PO BOX 6136, WESTERVILLE, OH 43081-6136 SN 0002-7820 J9 J AM CERAM SOC JI J. Am. Ceram. Soc. PD APR PY 1991 VL 74 IS 4 BP 881 EP 883 DI 10.1111/j.1151-2916.1991.tb06947.x PG 3 WC Materials Science, Ceramics SC Materials Science GA FF810 UT WOS:A1991FF81000037 ER PT J AU FRANCE, MEB MEIROVITCH, L AF FRANCE, MEB MEIROVITCH, L TI DISCRETE-TIME DECENTRALIZED CONTROL OF SPACECRAFT WITH RETARGETABLE FLEXIBLE ANTENNAS SO JOURNAL OF THE ASTRONAUTICAL SCIENCES LA English DT Article AB This paper is concerned with the decentralized control of spacecraft consisting of a rigid platform and retargetable flexible antennas. The mission consists of a minimum-time maneuver of the antennas to coincide with predetermined lines of sight, while stabilizing the platform in an inertial space and suppressing the elastic vibration of the antennas. The system is modeled by a set of linearized, time-varying equations of motion. A discrete-time approach permits consideration of the time-varying nature of the system in designing the digital control law. A new decentralized control technique called Substructure-Decentralized Control is presented and compared to a direct output feedback control scheme. Results from numerical examples involving a spacecraft with a single flexible antenna are presented. C1 VIRGINIA POLYTECH INST & STATE UNIV,BLACKSBURG,VA 24061. RP FRANCE, MEB (reprint author), USAF ACAD,DEPT ASTRONAUT,COLORADO SPRINGS,CO 80840, USA. NR 11 TC 3 Z9 3 U1 0 U2 0 PU AMER ASTRONAUTICAL SOC PI SPRINGFIELD PA 6352 ROLLING MILL PLACE SUITE 102, SPRINGFIELD, VA 22152 SN 0021-9142 J9 J ASTRONAUT SCI JI J. Astronaut. Sci. PD APR-JUN PY 1991 VL 39 IS 2 BP 249 EP 269 PG 21 WC Engineering, Aerospace SC Engineering GA FR058 UT WOS:A1991FR05800007 ER PT J AU SUN, DC BREWE, DE AF SUN, DC BREWE, DE TI A HIGH-SPEED PHOTOGRAPHY STUDY OF CAVITATION IN A DYNAMICALLY LOADED JOURNAL BEARING SO JOURNAL OF TRIBOLOGY-TRANSACTIONS OF THE ASME LA English DT Article ID SQUEEZE FILM DAMPER AB The earlier study made by Jacobson and Hamrock on the cavitation of liquid lubricant films in a dynamically loaded journal bearing was repeated with a quartz sleeve, which was more rigid than the Polymethylmethacrylate (PMMA) sleeve used previously. Various improvements of the test rig were made concomitantly so that the experimental errors could be better controlled and assessed. This paper describes the updated high-speed photography experiment and its results. C1 USAF,AVSCOM,LEWIS RES CTR,ARMY AVIAT RES & TECHNOL ACTIV,CLEVELAND,OH 44135. RP SUN, DC (reprint author), SUNY BINGHAMTON,THOMAS J WATSON SCH ENGN APPL SCI & TECHNOL,DEPT MECH & IND ENGN,BINGHAMTON,NY 13902, USA. NR 11 TC 4 Z9 5 U1 0 U2 4 PU ASME-AMER SOC MECHANICAL ENG PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 0742-4787 J9 J TRIBOL-T ASME JI J. Tribol.-Trans. ASME PD APR PY 1991 VL 113 IS 2 BP 287 EP 294 DI 10.1115/1.2920618 PG 8 WC Engineering, Mechanical SC Engineering GA FJ111 UT WOS:A1991FJ11100009 ER PT J AU WENNERSTROM, AJ AF WENNERSTROM, AJ TI A REVIEW OF PREDICTIVE EFFORTS FOR TRANSPORT PHENOMENA IN AXIAL-FLOW COMPRESSORS SO JOURNAL OF TURBOMACHINERY-TRANSACTIONS OF THE ASME LA English DT Article ID SECONDARY FLOW AB Transport phenomena as they apply to throughflow calculations in axial-flow compressors are reviewed. An historical background is presented. Then the debate raised by the Adkins and Smith versus the Gallimore and Cumpsty approaches to radial transport is discussed. This debate was resolved in that it was finally concluded that both turbulent transport and convective secondary flows play a role in spanwise transport. Other major related efforts mentioned are those of Hirsch and his colleagues and Papailiou and his colleagues. Readers are encouraged to reconsider exploitation of the work of Kerrebrock and Mikolajczak concerning circumferential transport. Comments on future trends are offered. C1 WRIGHT RES & DEV CTR,AERO PROPULS & POWER LAB,WRIGHT PATTERSON AFB,OH 45433. NR 20 TC 4 Z9 4 U1 0 U2 2 PU ASME-AMER SOC MECHANICAL ENG PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 0889-504X J9 J TURBOMACH JI J. Turbomach.-Trans. ASME PD APR PY 1991 VL 113 IS 2 BP 175 EP 179 DI 10.1115/1.2929080 PG 5 WC Engineering, Mechanical SC Engineering GA HP739 UT WOS:A1991HP73900004 ER PT J AU SHARP, JR AF SHARP, JR TI THE NEW AIR-FORCE FITNESS TEST - A FIELD TRIAL ASSESSING EFFECTIVENESS AND SAFETY SO MILITARY MEDICINE LA English DT Article AB Two thousand one hundred thirty-nine Air Force members were stratified in risk categories based on a questionnaire about their exercise habits and risk factors which could preclude participation in the new Air Force fitness test. Those at risk were interviewed by a practitioner and placed in a supervised fitness program or exempted from testing. All others were tested by the 1.5-mile field run. Based on these data it is estimated that 40% of the Air Force was exercising regularly and only 50% would pass the old category III standards, with 33% passing the new category IV standard. Thirteen percent of the Air Force would be in the highest risk category, but after a practitioner interview alone, only 7.9% would be exempted from testing altogether, almost all for known or suspected cardiac conditions. This screening and interviewing process is not a significant additional workload on Medical Treatment Facilities and may enhance the safety of the new Air Force fitness program. RP SHARP, JR (reprint author), MED SERV & TRAINING,RANDOLPH AFB,TX 78235, USA. NR 0 TC 1 Z9 1 U1 0 U2 1 PU ASSN MILITARY SURG US PI BETHESDA PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 SN 0026-4075 J9 MIL MED JI Milit. Med. PD APR PY 1991 VL 156 IS 4 BP 181 EP 185 PG 5 WC Medicine, General & Internal SC General & Internal Medicine GA FG528 UT WOS:A1991FG52800008 PM 2030839 ER PT J AU AVRAMIDIS, AN BAUER, KW WILSON, JR AF AVRAMIDIS, AN BAUER, KW WILSON, JR TI SIMULATION OF STOCHASTIC ACTIVITY NETWORKS USING PATH CONTROL VARIATES SO NAVAL RESEARCH LOGISTICS LA English DT Article ID CONDITIONAL MONTE-CARLO; PERT TIMES; ASSUMPTIONS; NORMALITY AB This article details several procedures for using path control variates to improve the accuracy of simulation-based point and confidence-interval estimators of the mean completion time of a stochastic activity network (SAN). Because each path control variate is the duration of the corresponding directed path in the network from the source to the sink, the vector of selected path controls has both a known mean and a known covariance matrix. This information is incorporated into estimation procedures for both normal and nonnormal responses. To evaluate the performance of these procedures experimentally, we examine the bias, variance, and mean square error of the controlled point estimators as well as the average half-length and coverage probability of the corresponding confidence-interval estimators for a set of SANs in which the following characteristics are systematically varied: (a) the size of the network (number of nodes and arcs); (b) the topology of the network; (c) the percentage of activities with exponentially distributed durations; and (d) the relative dominance of the critical path. The experimental results show that although large improvements in accuracy can be achieved with some of these procedures, the confidence-interval estimators for normal responses may suffer serious loss of coverage probability in some applications. C1 USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433. RP AVRAMIDIS, AN (reprint author), PURDUE UNIV,SCH IND ENGN,W LAFAYETTE,IN 47907, USA. RI Avramidis, Athanassios/E-5596-2011 NR 31 TC 8 Z9 8 U1 2 U2 3 PU JOHN WILEY & SONS INC PI NEW YORK PA 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0894-069X J9 NAV RES LOG JI Nav. Res. Logist. PD APR PY 1991 VL 38 IS 2 BP 183 EP 201 DI 10.1002/1520-6750(199104)38:2<183::AID-NAV3220380206>3.0.CO;2-V PG 19 WC Operations Research & Management Science SC Operations Research & Management Science GA FD160 UT WOS:A1991FD16000005 ER PT J AU SKAGGS, DC AF SKAGGS, DC TI THE WAR OF 1812 - A FORGOTTEN CONFLICT - HICKEY,DR SO NEW YORK HISTORY LA English DT Book Review RP SKAGGS, DC (reprint author), USAF,AIR WAR COLL,DEPT STRATEGY FORCES,MAXWELL AFB,AL, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU NEW YORK STATE HIST ASSN PI COOPERSTOWN PA PO BOX 800, COOPERSTOWN, NY 13326-0800 SN 0146-437X J9 NEW YORK HIST JI N. Y. Hist. PD APR PY 1991 VL 72 IS 2 BP 251 EP 252 PG 2 WC History SC History GA FV797 UT WOS:A1991FV79700011 ER PT J AU ROGGEMANN, MC MILLS, JP ROGERS, SK KABRISKY, M AF ROGGEMANN, MC MILLS, JP ROGERS, SK KABRISKY, M TI SEGMENTATION OF NOISY RANGE IMAGES USING THE SMALL-SCALE PLANARITY OF MAN-MADE VEHICLES SO OPTICAL ENGINEERING LA English DT Article DE RANGE IMAGE SEGMENTATION; PLANE-FITTING; PLANARITY TEST AB Segmentation of vehicles in natural backgrounds using absolute range imagery is considered. The segmentation technique exploits the small-scale planarity of man-made vehicles without explicit use of surface orientation information. A planarity test is used as the initial step in partitioning man-made vehicles from natural backgrounds. The planarity test is based on an estimate of the statistics of the absolute value of the error associated with fitting planes to small regions of the Cartesian coordinates of range image pixels. The planarity test is developed as a function of the standard deviation of the noise associated with range measurements. Heuristics used in conjunction with this algorithm are also presented. This algorithm has been evaluated on a database of 57 real range images, and results are presented. Application of the algorithm to two specific cases is shown in detail. C1 USAF,INST TECHNOL,SCH ENGN,WRIGHT PATTERSON AFB,OH 45433. UNIV NEW MEXICO,ALBUQUERQUE,NM 87131. NR 9 TC 0 Z9 0 U1 0 U2 0 PU SOC PHOTO-OPT INSTRUM ENG PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 SN 0091-3286 J9 OPT ENG JI Opt. Eng. PD APR PY 1991 VL 30 IS 4 BP 408 EP 414 DI 10.1117/12.55811 PG 7 WC Optics SC Optics GA FF497 UT WOS:A1991FF49700007 ER PT J AU KINSELLA, JP MORROW, WR GERSTMANN, DR TAYLOR, AF DELEMOS, RA AF KINSELLA, JP MORROW, WR GERSTMANN, DR TAYLOR, AF DELEMOS, RA TI CARDIAC-OUTPUT BY DOPPLER ECHOCARDIOGRAPHY IN THE PREMATURE BABOON - COMPARISON WITH RADIOLABELED MICROSPHERES SO PEDIATRIC CARDIOLOGY LA English DT Article DE DOPPLER ECHOCARDIOGRAPHY; MICROSPHERES; CARDIAC OUTPUT; PREMATURE BABOON ID HIGH-FREQUENCY VENTILATION; HYALINE-MEMBRANE DISEASE; BLOOD-FLOW; CLINICAL VALIDATION; VELOCITY PROFILE; ASCENDING AORTA; STROKE VOLUME; CHILDREN; PRESSURE; LAMBS AB Pulsed-Doppler echocardiography (PDE) is a useful noninvasive method for determining left ventricular output (LVO). However, despite increasingly widespread use in neonatal intensive care units, validation studies in prematures with cardiopulmonary disease are lacking. The purpose of this study was to compare radiolabeled microsphere (RLM) and PDE measurements of LVO, using the critically ill premature baboon as a model of the human neonate. Twenty-two paired RLM and PDE measurements of LVO were obtained in 14 animals between 3 and 24 h of age. Average PDE LVO was 152 ml/min/kg (range, 40-258 ml/min/kg) compared to 158 ml/min/kg (range, 67-278 ml/min/kg) measured by RLM. Linear regression analysis of the paired measurements showed good correlation with a slope near unity (y = 0.94x + 4.20, r = 0.91, SEE = 25.7 ml). We conclude that PDE determinations of LVO compare well with those measured by RLM in the premature baboon. PDE appears to provide a valid estimate of LVO and should be useful in human prematures with cardiopulmonary distress. C1 WILFORD HALL USAF MED CTR,DEPT PEDIAT,LACKLAND AFB,TX 78236. RP KINSELLA, JP (reprint author), SW FDN BIOMED RES,DEPT PHYSIOL & MED,POB 28147,SAN ANTONIO,TX 78284, USA. FU NHLBI NIH HHS [HL36536] NR 27 TC 7 Z9 7 U1 0 U2 0 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0172-0643 J9 PEDIATR CARDIOL JI Pediatr. Cardiol. PD APR PY 1991 VL 12 IS 2 BP 92 EP 97 DI 10.1007/BF02238410 PG 6 WC Cardiac & Cardiovascular Systems; Pediatrics SC Cardiovascular System & Cardiology; Pediatrics GA FB533 UT WOS:A1991FB53300006 PM 1866344 ER PT J AU DIAZ, MJ HEDLUND, GL AF DIAZ, MJ HEDLUND, GL TI SONOGRAPHIC DIAGNOSIS OF TRAUMATIC SEPARATION OF THE PROXIMAL FEMORAL EPIPHYSIS IN THE NEONATE SO PEDIATRIC RADIOLOGY LA English DT Note ID HIP AB Traumatic separation of the proximal femoral epiphysis is an uncommon birth injury that is difficult to diagnose early. A case is presented in which ultrasonography (US) was used to demonstrate the physeal injury. Early recognition of this injury with US may help prevent development of a permanent coxa vara deformity. RP DIAZ, MJ (reprint author), WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236, USA. NR 7 TC 4 Z9 4 U1 0 U2 0 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0301-0449 J9 PEDIATR RADIOL JI Pediatr. Radiol. PD APR PY 1991 VL 21 IS 3 BP 238 EP 240 DI 10.1007/BF02011061 PG 3 WC Pediatrics; Radiology, Nuclear Medicine & Medical Imaging SC Pediatrics; Radiology, Nuclear Medicine & Medical Imaging GA FF522 UT WOS:A1991FF52200025 PM 2047172 ER PT J AU CHEN, H AIELLO, F AF CHEN, H AIELLO, F TI TRIMETHYLAMINURIA, PRADER-WILLI SYNDROME, AND DEL(15) (Q11Q13) SO PEDIATRIC RESEARCH LA English DT Meeting Abstract C1 WRIGHT STATE UNIV,SCH MED,DEPT PEDIAT,DAYTON,OH 45435. USAF,MED CTR,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 3 Z9 3 U1 0 U2 0 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0031-3998 J9 PEDIATR RES JI Pediatr. Res. PD APR PY 1991 VL 29 IS 4 BP A128 EP A128 PN 2 PG 1 WC Pediatrics SC Pediatrics GA FE038 UT WOS:A1991FE03800746 ER PT J AU GREENBERG, DN CLARK, RH YODER, BA AF GREENBERG, DN CLARK, RH YODER, BA TI EFFECT OF RACE ON MORBIDITY AND MORTALITY OF PREMATURE-INFANTS SO PEDIATRIC RESEARCH LA English DT Meeting Abstract C1 USAF,WILFORD HALL MED CTR,DEPT PEDIAT,SAN ANTONIO,TX. NR 0 TC 0 Z9 0 U1 0 U2 0 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0031-3998 J9 PEDIATR RES JI Pediatr. Res. PD APR PY 1991 VL 29 IS 4 BP A256 EP A256 PN 2 PG 1 WC Pediatrics SC Pediatrics GA FE038 UT WOS:A1991FE03801515 ER PT J AU JOHNSON, CP WALSH, WF DUSEK, SA CRABBE, LS AIELLO, F WHITNEY, EJ NAEVAL, CB DUHON, DR AF JOHNSON, CP WALSH, WF DUSEK, SA CRABBE, LS AIELLO, F WHITNEY, EJ NAEVAL, CB DUHON, DR TI BREATHING ABNORMALITIES DURING SLEEP IN CHILDREN WITH MYELODYSPLASIA SO PEDIATRIC RESEARCH LA English DT Meeting Abstract C1 UNIV TEXAS,MED CTR HOS BEXAR CTY DIST,DEPT PEDIAT,SAN ANTONIO,TX 78285. WILFORD HALL USAF MED CTR,DEPT NEONATOL & CARDIOL,LACKLAND AFB,TX 78236. UNIV CINCINNATI,CINCINNATI CTR DEV DISORDERS,CHILDRENS HOSP,MED CTR,DIV DEV DISORDERS,CINCINNATI,OH 45221. WRIGHT STATE UNIV,USAF,WRIGHT PATTERSON MED CTR,DEPT PEDIAT,DAYTON,OH 45435. MAYO CLIN & MAYO GRAD SCH MED,ROCHESTER METHODIST HOSP,ROCHESTER,MN 55901. ST MARYS HOSP,DEPT NEUROL,ROCHESTER,NY 14611. NR 0 TC 0 Z9 0 U1 0 U2 0 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0031-3998 J9 PEDIATR RES JI Pediatr. Res. PD APR PY 1991 VL 29 IS 4 BP A10 EP A10 PN 2 PG 1 WC Pediatrics SC Pediatrics GA FE038 UT WOS:A1991FE03800048 ER PT J AU WERNER, EJ ABSHIRE, TC TUCKER, EK MORROW, HE GIROUX, DS BROXSON, EH AF WERNER, EJ ABSHIRE, TC TUCKER, EK MORROW, HE GIROUX, DS BROXSON, EH TI VONWILLEBRANDS DISEASE IS THE MOST COMMON CONGENITAL BLEEDING DISORDER SO PEDIATRIC RESEARCH LA English DT Meeting Abstract C1 CHILDRENS HOSP KINGS DAUGHTERS,EASTERN VIRGINIA MED SCH,DEPT PEDIAT,NORFOLK,VA. USAF,MED CTR,WRIGHT PATTERSON AFB,OH 45433. KTTC,MED CTR,KEESLER AFB,MS. NR 0 TC 0 Z9 0 U1 0 U2 0 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0031-3998 J9 PEDIATR RES JI Pediatr. Res. PD APR PY 1991 VL 29 IS 4 BP A154 EP A154 PN 2 PG 1 WC Pediatrics SC Pediatrics GA FE038 UT WOS:A1991FE03800902 ER PT J AU WERNER, EJ ABSHIRE, TC GIROUX, DS MORROW, HE TUCKER, EK BROXSON, EH AF WERNER, EJ ABSHIRE, TC GIROUX, DS MORROW, HE TUCKER, EK BROXSON, EH TI VONWILLEBRAND-FACTOR ACTIVITY IS THE MOST USEFUL LABORATORY TEST IN THE DIAGNOSIS OF VONWILLEBRANDS DISEASE SO PEDIATRIC RESEARCH LA English DT Meeting Abstract C1 CHILDRENS HOSP KINGS DAUGHTERS,EASTERN VIRGINIA MED SCH,DEPT PEDIAT,NORFOLK,VA. USAF,MED CTR,WRIGHT PATTERSON AFB,OH 45433. KTTC,MED CTR,KEESLER AFB,MS. NR 0 TC 0 Z9 0 U1 0 U2 0 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0031-3998 J9 PEDIATR RES JI Pediatr. Res. PD APR PY 1991 VL 29 IS 4 BP A154 EP A154 PN 2 PG 1 WC Pediatrics SC Pediatrics GA FE038 UT WOS:A1991FE03800901 ER PT J AU MOORE, WM FIFE, DJ GRABNER, MJ WHYTE, GI AF MOORE, WM FIFE, DJ GRABNER, MJ WHYTE, GI TI ELECTROSTATIC EFFECTS IN THE PHOTOREDUCTION OF FLAVINS BY EDTA SO PHOTOCHEMISTRY AND PHOTOBIOLOGY LA English DT Article ID LUMIFLAVIN TRIPLET-STATE; LASER FLASH-PHOTOLYSIS; PHOTOCHEMICAL PROPERTIES; THIAZINE DYES; EXCITED-STATE; AMINO-ACIDS; REDUCTION; DERIVATIVES; MECHANISM; KINETICS AB The anaerobic photoreduction of riboflavin, flavin mononucleotide, N(3)-carboxymethyl-riboflavin, N(3)-methyl-lumiflavin, and lumiflavin by EDTA was studied in aqueous solution over the pH range 2.5-10. The electrostatic effects of the electron donor-acceptor pair produce a secondary effect on the reactivity, and this effect can be predicted from the product of the charges (Z(D) x Z(A)). The trianonic and tetraanonic species of EDTA have nitrogens which are free from intramolecular hydrogen bonding, and these species are potentially the most reactive. However, in some pH regions the electrostatic effect can become the dominant factor when both the electron donor and acceptor become negatively charged. The excited states of flavins are susceptible to charge effects whether the charge is localized on the side chain or involves the isoalloxazine ring system. C1 USAF ACAD,DEPT CHEM,COLORADO SPRINGS,CO 80840. RP MOORE, WM (reprint author), UTAH STATE UNIV,DEPT CHEM & BIOCHEM,LOGAN,UT 84322, USA. NR 30 TC 2 Z9 2 U1 1 U2 9 PU AMER SOC PHOTOBIOLOGY PI AUGUSTA PA BIOTECH PARK, 1021 15TH ST, SUITE 9, AUGUSTA, GA 30901-3158 SN 0031-8655 J9 PHOTOCHEM PHOTOBIOL JI Photochem. Photobiol. PD APR PY 1991 VL 53 IS 4 BP 439 EP 444 DI 10.1111/j.1751-1097.1991.tb03654.x PG 6 WC Biochemistry & Molecular Biology; Biophysics SC Biochemistry & Molecular Biology; Biophysics GA FD243 UT WOS:A1991FD24300003 ER PT J AU CHUNG, S LIN, CC LEE, ETP AF CHUNG, S LIN, CC LEE, ETP TI RADIATIVE-RECOMBINATION CROSS-SECTIONS AND RATE COEFFICIENTS OF ATOMIC OXYGEN SO PHYSICAL REVIEW A LA English DT Article ID DIELECTRONIC RECOMBINATION; COMPLEX-IONS AB Cross sections for radiative recombination of electrons with ground-state atomic oxygen ions to form oxygen atoms in the O[(4S)nl]3,5L states are calculated for nl up to (15,14) at 19 electron energies from 0.0345 to 2.585 eV based on Hartree-Fock wave functions of the bound and continuum states. By extrapolating the cross sections beyond n = 15, the radiative-recombination rate coefficients are determined. The present cross sections are virtually identical to those obtained by using the hydrogenic approximation for l greater-than-or-equal-to 3, but entirely different for the ns and np series. For the nd series the agreement is good at low energies, but the discrepancy becomes larger at higher energies. The present calculation agrees with a calculation based on the quantum-defect method to within 10% for the nd series, but some discrepancy is found for the np series. In the case of the ns series these two sets of calculations disagree entirely. C1 USAF,SYST COMMAND,GEOPHYS LAB,BEDFORD,MA 01731. RP CHUNG, S (reprint author), UNIV WISCONSIN,DEPT PHYS,MADISON,WI 53706, USA. NR 25 TC 15 Z9 15 U1 0 U2 3 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD APR 1 PY 1991 VL 43 IS 7 BP 3433 EP 3439 DI 10.1103/PhysRevA.43.3433 PG 7 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA FG216 UT WOS:A1991FG21600026 ER PT J AU OATES, DE ANDERSON, AC CHIN, CC DEROV, JS DRESSELHAUS, G DRESSELHAUS, MS AF OATES, DE ANDERSON, AC CHIN, CC DEROV, JS DRESSELHAUS, G DRESSELHAUS, MS TI SURFACE-IMPEDANCE MEASUREMENTS OF SUPERCONDUCTING NBN FILMS SO PHYSICAL REVIEW B LA English DT Article ID THIN-FILMS; RF CHARACTERIZATION; NIOBIUM-NITRIDE; RESISTANCE; A15 AB The temperature and frequency dependences of the surface impedance of NbN thin films have been measured from 4.2 to 13 K and from 0.5 to 10 GHz using a stripline resonator. At 4.2 K resonant-cavity measurements of surface resistance were made at 35 and at 56 GHz. From surface-reactance measurements using both cavity and stripline techniques, we obtain the penetration depth extrapolated to 0 K, lambda(0) = 3700 angstrom. For the stripline, the film thickness was approximately 8000 angstrom, which is about two times the measured penetration depth. The weak-coupling Mattis-Bardeen theory was used to fit the temperature dependence of the surface resistance. Based on the quality of the weak-coupling fit to the data, we conclude that the strong-coupling effect is not important in the local and dirty limits. We discuss the correction due to the finite film thickness of the stripline measurements of the surface resistance. C1 MIT,DEPT PHYS,CAMBRIDGE,MA 02139. USAF,ROME AIR DEV CTR,BEDFORD,MA 01731. MIT,FRANCIS BITTER NATL MAGNET LAB,CAMBRIDGE,MA 02139. MIT,DEPT ELECT ENGN & COMP SCI,CAMBRIDGE,MA 02139. RP OATES, DE (reprint author), MIT,LINCOLN LAB,LEXINGTON,MA 02173, USA. NR 36 TC 46 Z9 46 U1 0 U2 11 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD APR 1 PY 1991 VL 43 IS 10 BP 7655 EP 7663 DI 10.1103/PhysRevB.43.7655 PN A PG 9 WC Physics, Condensed Matter SC Physics GA FE549 UT WOS:A1991FE54900031 ER PT J AU ALM, J BECK, W AF ALM, J BECK, W TI WIPING THE SLATE CLEAN - INDIVIDUAL-RESPONSE TO STATE-TAX AMNESTIES SO SOUTHERN ECONOMIC JOURNAL LA English DT Article C1 USAF ACAD,COLORADO SPRINGS,CO 80840. RP ALM, J (reprint author), UNIV COLORADO,BOULDER,CO 80309, USA. NR 17 TC 8 Z9 8 U1 0 U2 0 PU UNIV NORTH CAROLINA PI CHAPEL HILL PA SOUTHERN ECONOMIC JOURNAL, CHAPEL HILL, NC 27514 SN 0038-4038 J9 SOUTHERN ECON J JI South. Econ. J. PD APR PY 1991 VL 57 IS 4 BP 1043 EP 1053 DI 10.2307/1060332 PG 11 WC Economics SC Business & Economics GA FF796 UT WOS:A1991FF79600011 ER PT J AU RODGERS, SL COOLIDGE, MB LAUDERDALE, WJ SHACKELFORD, SA AF RODGERS, SL COOLIDGE, MB LAUDERDALE, WJ SHACKELFORD, SA TI COMPARATIVE MECHANISTIC THERMOCHEMICAL DECOMPOSITION ANALYSES OF LIQUID HEXAHYDRO-1,3,5-TRINITRO-1,3,5-TRIAZINE (RDX) USING THE KINETIC DEUTERIUM-ISOTOPE EFFECT APPROACH SO THERMOCHIMICA ACTA LA English DT Article ID THERMAL-DECOMPOSITION; SCANNING CALORIMETRY; PRESSURE AB The condensed phase kinetic deuterium isotope effect (KDIE) approach is applied to the thermochemical decomposition of liquid RDX and RDX-d6 using two dissimilar thermal analysis techniques. Comparative KDIE results from isothermal differential scanning calorimetry (IDSC) and from direct RDX concentration depletion measurements by quenched UV spectrometric analysis confirm the proposed proportionality between IDSC heat evolution rates and the RDX concentration depletion rate. Additionally, these KDIE data verify the proposed rate-controlling mechanistic step previously reported from an isothermal thermogravimetric investigation of liquid RDX determined from weight loss rates. Observed mechanistic and kinetic differences between the cyclic six-membered RDX decomposition and its eight-membered HMX homologue are outlined. C1 USAF ACAD,AIRFORCE SERV CTR,FRANK J SEILER RES LAB,COLORADO SPRINGS,CO 80840. RP RODGERS, SL (reprint author), USAF,SERV COMMAND,ASTRONAUT LAB,EDWARDS AFB,CA 93523, USA. NR 43 TC 13 Z9 13 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0040-6031 J9 THERMOCHIM ACTA JI Thermochim. Acta PD APR 1 PY 1991 VL 177 BP 151 EP 168 DI 10.1016/0040-6031(91)80093-X PG 18 WC Thermodynamics; Chemistry, Analytical; Chemistry, Physical SC Thermodynamics; Chemistry GA FH151 UT WOS:A1991FH15100015 ER PT J AU GOLTZ, MN OXLEY, ME AF GOLTZ, MN OXLEY, ME TI ANALYTICAL MODELING OF AQUIFER DECONTAMINATION BY PUMPING WHEN TRANSPORT IS AFFECTED BY RATE-LIMITED SORPTION SO WATER RESOURCES RESEARCH LA English DT Article ID SORBING SOLUTE TRANSPORT; POROUS-MEDIA; LONGITUDINAL DISPERSION; CONTAMINANT TRANSPORT; NUMERICAL INVERSION; RADIAL DISPERSION; LOCAL EQUILIBRIUM; HOMOGENEOUS SOILS; AGGREGATED OXISOL; MASS-TRANSFER AB Aquifer cleanup efforts at contaminated sites frequently involve operation of a system of extraction wells. It has been found that contaminant load discharged by extraction wells typically declines with time, asymptotically approaching a residual level. Such behavior could be due to rate-limited desorption of an organic contaminant from aquifer solids. An analytical model is presented which accounts for rate-limited desorption of an organic solute during cleanup of a contaminated site. Model equations are presented which describe transport of a sorbing contaminant in a converging radial flow field, with sorption described by (1) equilibrium, (2) first-order rate, and (3) Fickian diffusion expressions. The model equations are solved in the Laplace domain and numerically inverted to simulate contaminant concentrations at an extraction well. A Laplace domain solution for the total contaminant mass remaining in the aquifer is also derived. It is shown that rate-limited sorption can have a significant impact upon aquifer remediation. Approximate equivalence among the various rate-limited models is also demonstrated. C1 USAF,INST TECHNOL,SCH ENGN,DEPT MATH & STAT,WRIGHT PATTERSON AFB,OH 45433. RP GOLTZ, MN (reprint author), USAF,INST TECHNOL,SCH CIVIL ENGN,DEPT ENVIRONM MANAGEMENT,WRIGHT PATTERSON AFB,OH 45433, USA. RI Goltz, Mark/A-7394-2009 NR 34 TC 44 Z9 44 U1 0 U2 9 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0043-1397 J9 WATER RESOUR RES JI Water Resour. Res. PD APR PY 1991 VL 27 IS 4 BP 547 EP 556 DI 10.1029/90WR02760 PG 10 WC Environmental Sciences; Limnology; Water Resources SC Environmental Sciences & Ecology; Marine & Freshwater Biology; Water Resources GA FF714 UT WOS:A1991FF71400010 ER PT J AU BALL, WP GOLTZ, MN ROBERTS, PV AF BALL, WP GOLTZ, MN ROBERTS, PV TI MODELING THE TRANSPORT OF SOLUTES INFLUENCED BY MULTIPROCESS NONEQUILIBRIUM - COMMENT SO WATER RESOURCES RESEARCH LA English DT Note ID SORPTION; SOILS C1 STANFORD UNIV,DEPT CIVIL ENGN,STANFORD,CA 94305. USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433. RI Goltz, Mark/A-7394-2009; Ball, William/A-3285-2010 OI Ball, William/0000-0001-5217-8108 NR 17 TC 15 Z9 15 U1 0 U2 1 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0043-1397 J9 WATER RESOUR RES JI Water Resour. Res. PD APR PY 1991 VL 27 IS 4 BP 653 EP 656 DI 10.1029/91WR00279 PG 4 WC Environmental Sciences; Limnology; Water Resources SC Environmental Sciences & Ecology; Marine & Freshwater Biology; Water Resources GA FF714 UT WOS:A1991FF71400022 ER PT J AU CLARK, FO LAUREIJS, RJ WARDELL, LL AF CLARK, FO LAUREIJS, RJ WARDELL, LL TI DUST AND MOLECULAR-PROPERTIES OF THE LOW-OPACITY CLOUD LYNDS-1563 SO ASTROPHYSICAL JOURNAL LA English DT Article DE INTERSTELLAR-GRAINS; INTERSTELLAR-MOLECULES; NEBULAE-INDIVIDUAL (LYNDS1563) ID RADIATION; HYDROGEN; IRAS AB Optical, molecular, and far-infrared data are analyzed for L1563, estimated peak A(b) 2.5 mag. The cloud is detected by IRAS at 12, 25, 60, and 100-mu-m, and with CO, (CO)-C-13, and H2CO molecules. A column density comparison yields an estimate of the temperature of the classical dust grains of 15.6 K (+/- 1 K), while the color temperature derived from the ratio I(60)/I(100) is 26 K. Both dust and color temperatures decrease toward the cloud center. (CO)-C-13 and H2CO spectral lines are detected above a threshold in I(100). I(12) and I(25) increase with I(100) only in the outer regions of the cloud. The ratio of (CO)-C-13/(CO)-C-12 integrated intensity rises toward the cloud center by 10. C1 CALTECH,CTR INFRARED PROC & ANAL,PASADENA,CA 91125. WELLESLEY COLL,DEPT PHYS,WELLESLEY,MA 02181. RP CLARK, FO (reprint author), USAF,GEOPHYS LAB,CTR SERV,OPC,BEDFORD,MA 01731, USA. NR 19 TC 5 Z9 5 U1 0 U2 0 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD MAR 20 PY 1991 VL 370 IS 1 BP 237 EP 242 DI 10.1086/169809 PN 1 PG 6 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA EZ603 UT WOS:A1991EZ60300021 ER PT J AU KILE, JN CLIVER, EW AF KILE, JN CLIVER, EW TI A SEARCH FOR THE 154 DAY PERIODICITY IN THE OCCURRENCE RATE OF SOLAR-FLARES USING OTTAWA 2.8 GHZ BURST DATA, 1955-1990 SO ASTROPHYSICAL JOURNAL LA English DT Article DE SUN-ACTIVITY; SUN-RADIO RADIATION ID TIME-SERIES; DIAMETER; BEHAVIOR AB We have examined the Ottawa 2.8 GHz burst record from 1955 January to 1990 February for evidence of a periodicity near 154 days in the occurrence rate of solar flares. We find this periodicity to be statistically significant, at the approximately 1% level, only for the years from 1978 to 1983 corresponding to the activity maximum of solar cycle 21. A significant periodicity within this approximately 5 yr interval has been previously reported by several authors. Through 1990 February, the Ottawa data show no evidence for a 154 day period in the current 22d solar cycle that began in 1986 September. We were unable to confirm, using the Ottawa burst record and comprehensive flare index (CFI) data, earlier reports of a 154 day periodicity during cycle 20 (1965-1976) that were based on spectral analyses of counts of H-alpha flares and microwave bursts. We were also unable to detect in the Ottawa and CFI data a recently reported episode of 154 day periodic activity, seen in solar proton event data, occurring from 1958 to 1971. We do find a spectral peak near 51 days in solar cycle 19 (1955-1964), as had been previously reported based on an examination of CFI data, but its significance is low, at the approximately 33% level. We conclude that, other than for the period in cycle 21 in which it was first discovered, the evidence for the 154 day periodicity from flare-related data sets is contradictory and not compelling. Stronger evidence for the occurrence of the 154 day periodicity outside cycle 21 can be found in recent studies that examine parameters such as sunspot counts and areas that characterize solar active regions. C1 USAF,GEOPHYS LAB,DIV SPACE PHYS,BEDFORD,MA 01731. RP KILE, JN (reprint author), TUFTS UNIV,DEPT PHYS & ASTRON,MEDFORD,MA 02155, USA. NR 29 TC 62 Z9 63 U1 0 U2 1 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD MAR 20 PY 1991 VL 370 IS 1 BP 442 EP 448 DI 10.1086/169831 PN 1 PG 7 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA EZ603 UT WOS:A1991EZ60300043 ER PT J AU ELCI, A DEPATIE, D AF ELCI, A DEPATIE, D TI COHERENT-LIGHT SCATTERING IN AN AHARONOV-BOHM GEOMETRY OF QUANTUM-WELLS SO JOURNAL OF PHYSICS-CONDENSED MATTER LA English DT Article AB This paper discusses the possibility of the transfer of electronic Aharonov-Bohm phase factors to light in double-quantum-well structures in magnetic fields. The open nature of semiconductor quantum wells permits a new type of coherent light scattering by means of certain interband transitions which preserve the positional indeterminacy of electronic states in Aharonov-Bohm superpositions. The modes of the coherently scattered light are determined by the magnetic flux per unit length between the wells. The calculation shows that the scattering mechanism can be quite efficient and may be used as an optical probe of ballistic electrons whose wavefunctions do not suffer a reduction while traversing the wells. C1 USAF,WEAP LAB,KIRTLAND AFB,NM 87117. RP ELCI, A (reprint author), UNIV NEW MEXICO,CTR ADV STUDIES,ALBUQUERQUE,NM 87131, USA. NR 6 TC 1 Z9 1 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA TECHNO HOUSE, REDCLIFFE WAY, BRISTOL, ENGLAND BS1 6NX SN 0953-8984 J9 J PHYS-CONDENS MAT JI J. Phys.-Condes. Matter PD MAR 18 PY 1991 VL 3 IS 11 BP 1517 EP 1537 DI 10.1088/0953-8984/3/11/012 PG 21 WC Physics, Condensed Matter SC Physics GA FD306 UT WOS:A1991FD30600012 ER PT J AU BIGLEY, NJ CURIEL, RE KOZLOWSKI, D ISHIKAWA, R HENDERSON, RA KIEL, JL AF BIGLEY, NJ CURIEL, RE KOZLOWSKI, D ISHIKAWA, R HENDERSON, RA KIEL, JL TI INSOLUBLE CROSS-LINKED CYTOTOXIC OXIDASE-PEROXIDASE SYSTEM (ICCOPS) AND SPLEEN CELL-PICORNAVIRUS INTERACTIONS SO FASEB JOURNAL LA English DT Meeting Abstract C1 WRIGHT STATE UNIV,DEPT MICROBIOL & IMMUNOL,DAYTON,OH 45435. USAF,WRIGHT PATTERSON AFB,OH 45433. USAF,BROOKS AFB,TX 78235. NR 0 TC 0 Z9 0 U1 0 U2 0 PU FEDERATION AMER SOC EXP BIOL PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3998 SN 0892-6638 J9 FASEB J JI Faseb J. PD MAR 15 PY 1991 VL 5 IS 5 BP A1368 EP A1368 PN 2 PG 1 WC Biochemistry & Molecular Biology; Biology; Cell Biology SC Biochemistry & Molecular Biology; Life Sciences & Biomedicine - Other Topics; Cell Biology GA FC550 UT WOS:A1991FC55002612 ER PT J AU MOODY, JM RUBAL, BJ BAILEY, SR KONO, A AF MOODY, JM RUBAL, BJ BAILEY, SR KONO, A TI EFFECTS OF AMYL NITRITE INHALATION (ANI) ON CARDIAC DYNAMICS - IMPLICATIONS FOR BEDSIDE DIAGNOSIS SO FASEB JOURNAL LA English DT Meeting Abstract C1 BROOKE ARMY MED CTR,FT SAM HOUSTON,TX 78234. USAF,BROOKS AFB,TX 78235. NR 0 TC 0 Z9 0 U1 0 U2 0 PU FEDERATION AMER SOC EXP BIOL PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3998 SN 0892-6638 J9 FASEB J JI Faseb J. PD MAR 15 PY 1991 VL 5 IS 5 BP A1437 EP A1437 PN 2 PG 1 WC Biochemistry & Molecular Biology; Biology; Cell Biology SC Biochemistry & Molecular Biology; Life Sciences & Biomedicine - Other Topics; Cell Biology GA FC550 UT WOS:A1991FC55003015 ER PT J AU WALLER, SB DIETZ, NJ WERCHAN, PM SHAHED, AR AF WALLER, SB DIETZ, NJ WERCHAN, PM SHAHED, AR TI CENTRIFUGATION-INDUCED ISOELECTRIC EEG (IEEG) - RELATIONSHIP TO ENERGY SUBSTRATES SO FASEB JOURNAL LA English DT Meeting Abstract C1 UNIV S DAKOTA,VERMILLION,SD 57069. USAF,BROOKS AFB,TX 78235. NR 0 TC 0 Z9 0 U1 0 U2 0 PU FEDERATION AMER SOC EXP BIOL PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3998 SN 0892-6638 J9 FASEB J JI Faseb J. PD MAR 15 PY 1991 VL 5 IS 5 BP A1130 EP A1130 PN 2 PG 1 WC Biochemistry & Molecular Biology; Biology; Cell Biology SC Biochemistry & Molecular Biology; Life Sciences & Biomedicine - Other Topics; Cell Biology GA FC550 UT WOS:A1991FC55001231 ER PT J AU MORENO, RJ KLOESS, P CARLSON, DW AF MORENO, RJ KLOESS, P CARLSON, DW TI THE EFFECT OF SUCCINYLCHOLINE ON THE INTRAOCULAR CONTENTS OF OPEN GLOBES SO INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. NR 0 TC 0 Z9 0 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 0146-0404 J9 INVEST OPHTH VIS SCI JI Invest. Ophthalmol. Vis. Sci. PD MAR 15 PY 1991 VL 32 IS 4 BP 877 EP 877 PG 1 WC Ophthalmology SC Ophthalmology GA FC762 UT WOS:A1991FC76201021 ER PT J AU WOESSNER, WM FEASTER, JM MILLER, RE DENNIS, RJ AF WOESSNER, WM FEASTER, JM MILLER, RE DENNIS, RJ TI ADULT ONSET MYOPIA IN AIR-FORCE PILOTS AND NAVIGATORS SO INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE LA English DT Meeting Abstract C1 UNIV HOUSTON,COLL OPTOMETRY,HOUSTON,TX 77004. USAF,SCH AEROSP ENGN,BROOKS AFB,TX 78235. NR 0 TC 0 Z9 0 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 0146-0404 J9 INVEST OPHTH VIS SCI JI Invest. Ophthalmol. Vis. Sci. PD MAR 15 PY 1991 VL 32 IS 4 BP 884 EP 884 PG 1 WC Ophthalmology SC Ophthalmology GA FC762 UT WOS:A1991FC76201060 ER PT J AU MCLIN, LN AF MCLIN, LN TI TRACKING PERFORMANCE WITH A CENTRAL SIMULATED SCOTOMA AND THE DEVELOPMENT OF A PREFERRED RETINAL LOCUS SO INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE LA English DT Meeting Abstract C1 USAF,SCH AEROSP MED,DIV RADIAT SCI,BROOKS AFB,TX 78235. NR 0 TC 0 Z9 0 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 0146-0404 J9 INVEST OPHTH VIS SCI JI Invest. Ophthalmol. Vis. Sci. PD MAR 15 PY 1991 VL 32 IS 4 BP 896 EP 896 PG 1 WC Ophthalmology SC Ophthalmology GA FC762 UT WOS:A1991FC76201116 ER EF