FN Thomson Reuters Web of Science™ VR 1.0 PT J AU YEOMANS, ER HANKINS, GDV AF YEOMANS, ER HANKINS, GDV TI OPERATIVE VAGINAL DELIVERY IN THE 1990S SO CLINICAL OBSTETRICS AND GYNECOLOGY LA English DT Article ID VACUUM EXTRACTION; MIDFORCEPS DELIVERY; FORCEPS; CUP; MORBIDITY; TRIAL RP YEOMANS, ER (reprint author), WILFORD HALL USAF MED CTR,DEPT OBSTET & GYNECOL,LACKLAND AFB,TX 78236, USA. NR 26 TC 6 Z9 9 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 SEP PY 1992 VL 35 IS 3 BP 487 EP 493 DI 10.1097/00003081-199209000-00008 PG 7 WC Obstetrics & Gynecology SC Obstetrics & Gynecology GA JL447 UT WOS:A1992JL44700006 PM 1521378 ER PT J AU WOLF, MJ GANGULY, BN AF WOLF, MJ GANGULY, BN TI RYDBERG STATE STARK SPECTROSCOPIC MEASUREMENT OF ELECTRIC-FIELD PROFILE IN A PROPANE AIR FLAME SO COMBUSTION AND FLAME LA English DT Article ID GLOW-DISCHARGE; CATHODE; ATOMS AB Electric field profiles have been measured in an atmospheric pressure propane-air flame, seeded with cesium, by Rydberg state Stark spectroscopy with 780 and 380 V applied voltage between electrodes placed across the flame. The space-charge density at the flame edge has been estimated from the electric field gradient. The electrical conductivity has been calculated from the current density and the electric field measurements. C1 WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433. RP WOLF, MJ (reprint author), UNIV DAYTON,RES INST,DAYTON,OH 45469, USA. NR 15 TC 1 Z9 1 U1 0 U2 4 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 SEP PY 1992 VL 90 IS 3-4 BP 284 EP 288 DI 10.1016/0010-2180(92)90089-8 PG 5 WC Thermodynamics; Energy & Fuels; Engineering, Multidisciplinary; Engineering, Chemical; Engineering, Mechanical SC Thermodynamics; Energy & Fuels; Engineering GA JH792 UT WOS:A1992JH79200006 ER PT J AU EARLES, JA REE, MJ AF EARLES, JA REE, MJ TI THE PREDICTIVE-VALIDITY OF THE ASVAB FOR TRAINING GRADES SO EDUCATIONAL AND PSYCHOLOGICAL MEASUREMENT LA English DT Article AB The validity of the ASVAB subtests and composites for grades in 150 military technical schools was investigated. Across all jobs and within the job categories of Mechanical, Administrative, General, and Electronics, after correction for range restriction, Arithmetic Reasoning was found to bc the most valid subtest. Across all jobs and within the job categories, the Electronics composite or the General composite was the most valid composite. RP EARLES, JA (reprint author), USAF,ARMSTRONG LAB,HRMI,BROOKS AFB,TX 78235, USA. NR 5 TC 32 Z9 32 U1 3 U2 3 PU SAGE PUBLICATIONS INC PI THOUSAND OAKS PA 2455 TELLER RD, THOUSAND OAKS, CA 91320 SN 0013-1644 J9 EDUC PSYCHOL MEAS JI Educ. Psychol. Meas. PD FAL PY 1992 VL 52 IS 3 BP 721 EP 725 DI 10.1177/0013164492052003022 PG 5 WC Psychology, Educational; Mathematics, Interdisciplinary Applications; Psychology, Mathematical SC Psychology; Mathematics GA JP138 UT WOS:A1992JP13800022 ER PT J AU MALL, S TRUSKOWSKI, JW AF MALL, S TRUSKOWSKI, JW TI CHARACTERIZATION OF MODE-II FRACTURE-BEHAVIOR IN FIBER-REINFORCED CERAMIC COMPOSITE UTILIZING LASER INTERFEROMETRY SO EXPERIMENTAL MECHANICS LA English DT Article ID TOUGHNESS; SPECIMEN; DESIGN AB A test technique to characterize the mode II fracture behavior in fiber-reinforced ceramic composites utilizing laser interferometry was developed. This was demonstrated by measuring the mode II critical strain energy release rate at room temperature. The present study used the silicon-carbide-fiber/glass-ceramic matrix composite system. RP MALL, S (reprint author), USAF,INST TECHNOL,DEPT AERONAUT & ASTRONAUT,WRIGHT PATTERSON AFB,OH 45433, USA. NR 13 TC 2 Z9 2 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 1992 VL 32 IS 3 BP 234 EP 239 DI 10.1007/BF02319361 PG 6 WC Materials Science, Multidisciplinary; Mechanics; Materials Science, Characterization & Testing SC Materials Science; Mechanics GA JW788 UT WOS:A1992JW78800007 ER PT J AU HIERL, PM HENCHMAN, MJ PAULSON, JF AF HIERL, PM HENCHMAN, MJ PAULSON, JF TI THRESHOLD ENERGIES FOR THE REACTIONS OH-+CH3X-]CH3OH+X-(X=CL,BR) MEASURED BY TANDEM MASS-SPECTROMETRY - DEPROTONATION ENERGIES (ACIDITIES) OF CH3CL AND CH3BR SO INTERNATIONAL JOURNAL OF MASS SPECTROMETRY LA English DT Article DE THRESHOLD ENERGIES; ACIDITIES; METHYL CHLORIDE; METHYL BROMIDE; TANDEM MASS SPECTROMETRY ID GAS-PHASE ACIDITIES; NUCLEOPHILIC DISPLACEMENT; PERIODIC TRENDS; CROSS-SECTIONS; OH; DEPENDENCE; ALKANES; BEAM; IONS AB In a tandem mass spectrometer, a beam of OH- ions was reacted with methyl chloride and methyl bromide at collision energies in the range 0.2 < E(T) < 5 eV. For both of the methyl halides, excitation functions, sigma(E(T)), were measured for the two competing channels, endoergic proton transfer and exoergic nucleophilic displacement: OH- + CH3X --> H2O + CH2X---> CH3OH + X-The threshold energies estimated for the proton transfer reactions are used to derive energies of deprotonation for CH3Cl and CH3Br of 1672 +/- 10 and 1660 +/- 10 kJ mol-1 respectively. C1 USAF, PHILLIPS LAB, GEOPHYS DIRECTORATE, DIV IONOSPHER EFFECTS GID, BEDFORD, MA 01731 USA. NR 29 TC 16 Z9 16 U1 1 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1387-3806 J9 INT J MASS SPECTROM JI Int. J. Mass Spectrom. PD SEP 1 PY 1992 VL 117 IS 1-3 BP 475 EP 485 DI 10.1016/0168-1176(92)80109-E PG 11 WC Physics, Atomic, Molecular & Chemical; Spectroscopy SC Physics; Spectroscopy GA JU838 UT WOS:A1992JU83800030 ER PT J AU FERGUSON, EE VANDOREN, JM VIGGIANO, AA MORRIS, RA PAULSON, JF STEWART, JD SUNDERLIN, LS ARMENTROUT, PB AF FERGUSON, EE VANDOREN, JM VIGGIANO, AA MORRIS, RA PAULSON, JF STEWART, JD SUNDERLIN, LS ARMENTROUT, PB TI INTERNAL AND TRANSLATIONAL ENERGY EFFECTS ON THE CHARGE-TRANSFER REACTION OF CO2+ WITH O2 SO INTERNATIONAL JOURNAL OF MASS SPECTROMETRY AND ION PROCESSES LA English DT Article DE CHARGE TRANSFER; CO2+; ENERGY EFFECTS; GUIDED ION BEAM; VARIABLE-TEMPERATURE SELECTED-ION FLOW DRIFT TUBE ID ION-MOLECULE REACTIONS; ROTATIONAL TEMPERATURE DEPENDENCES; LASER-INDUCED FLUORESCENCE; RATE CONSTANTS; KINETIC-ENERGY; VIBRATIONAL-EXCITATION; VELOCITY DISTRIBUTIONS; NEUTRAL REACTIONS; AR+; NE+ AB We have investigated the reaction of CO2+ with O2 over a range of kinetic energies with a guided ion beam apparatus and over a range of temperatures and kinetic energies with a variable-temperature selected-ion flow drift tube. The rate constants decrease with increasing kinetic energy at low energy and increase at higher energy. Below about 10 eV, reaction proceeds by charge transfer only. Above 10 eV, O+ and CO+ product ions are observed in addition to the charge-transfer channel. At low energy, i.e. below 0.1 eV, the rate constants at a particular center-of-mass kinetic energy, [KE(cm)], do not depend on the temperature of the buffer gas. This indicates that energy in rotations and in the bending vibrational modes does not play a major role in determining reactivity. Above 0.1 eV, the rate constants at a particular [KE(cm)] do depend on temperature, such that the higher the buffer gas temperature the larger the rate constants. Analysis of the data suggests that the enhancement observed with temperature is primarily due to excitation of the CO2+ stretching vibrational modes. The analysis indicates that excitation of the CO2+ stretching modes increases the rate constant by approximately an order of magnitude. Excitation of bending vibrations may also enhance the efficiency of charge transfer above 0.2 eV. Translational energy causes a small increase in the charge-transfer rate constant above 0.3 eV. C1 USAF,PHILLIPS LAB,GEOPHYS DIRECTORATE,DIV IONOSPHER EFFECTS GRID,BEDFORD,MA 01731. NOAA,CLIMATE MONITORING & DIAGNOST LAB,BOULDER,CO 80303. UNIV UTAH,DEPT CHEM,SALT LAKE CITY,UT 84112. NR 50 TC 16 Z9 16 U1 1 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-1176 J9 INT J MASS SPECTROM JI Int. J. Mass Spectrom. Ion Process. PD SEP 1 PY 1992 VL 117 IS 1-3 BP 261 EP 282 DI 10.1016/0168-1176(92)80098-L PG 22 WC Physics, Atomic, Molecular & Chemical; Spectroscopy SC Physics; Spectroscopy GA JU838 UT WOS:A1992JU83800019 ER PT J AU VANDOREN, JM MORRIS, RA VIGGIANO, AA MILLER, AES MILLER, TM PAULSON, JF AF VANDOREN, JM MORRIS, RA VIGGIANO, AA MILLER, AES MILLER, TM PAULSON, JF TI CHEMISTRY OF C2- AND HC2- WITH NITROGEN, OXYGEN AND NITROGEN-OXIDES SO INTERNATIONAL JOURNAL OF MASS SPECTROMETRY AND ION PROCESSES LA English DT Article DE BRANCHING RATIOS; C2-; HC2-; NITROGEN OXIDES; RATE COEFFICIENTS; SIFDT ID GAS-PHASE REACTIONS; TRAJECTORY CALCULATIONS; ULTRAHIGH-RESOLUTION; EXCHANGE-REACTIONS; CARBON-DIOXIDE; DEGREES K; ION; SPECTROSCOPY; ANIONS; C-2 AB We have investigated the reactions of C2- and HC- with N2, N2O, NO, NO2 and O2 by using a selected-ion flow drift tube at 300 K. Rate coefficients and branching fractions were measured as a function of ion/neutral average center-of-mass kinetic energy ([KE(cm]) over the range from about 0.04 to 0.25 eV. The reaction of C2- with NO forms CN- (about 11%), NCO- (about 6%), and reactive electron detachment products (about 83%). The rate coefficient at 300 K is 1.2 (+/- 0.3) x 10(-10) cm3 s-1 and decreases with energy as [KE(cm]-0.7, while the product branching fractions are energy independent. The reaction of C2- with NO2 forms C2O- (about 74%), CNO- (or NCO-) (about 14%) and CN- (about 12%). The rate coefficient for this reaction is 4.8 (+/- 1.2) x 10(-10) cm3 s-1 at 300 K, and both the rate coefficient and branching fractions are approximately independent of kinetic energy over the range investigated. The reaction of C2- with O2 forms C2O- (about 70%) and reactive electron detachment products (about 30%). The rate coefficient for this reaction is 1.5 (+/- 0.4) x 10(-11) cm3 s-1 at 300 K and increases as [KE(cm)]+0.7 over the energy range studied. C2- is unreactive towards N2 and N2O within our experimental sensitivity over the energy range studied. HC2- reacts with NO2 to form HC2O- with a rate coefficient of 1.8 x 10(-10) cm3 s-1 at 300 K; the rate coefficient decreases with energy as [KE(cm]-0.7. HC2-does not react with N2, N2O, NO or O2 within our experimental sensitivity over the energy range studied. The measured parameters are discussed in terms of the characteristic reactivity of the anions and possible reaction mechanisms. Finally, CN- was found to be unreactive towards NO and O2 within experimental uncertainty at 300 K and no applied electric field, and reacts inefficiently with NO2 with a rate coefficient less than or equal to 6 x 10(-12) cm3 s-1. C1 UNIV OKLAHOMA,DEPT CHEM & BIOCHEM,NORMAN,OK 73019. UNIV OKLAHOMA,DEPT PHYS & ASTRON,NORMAN,OK 73019. RP VANDOREN, JM (reprint author), USAF,PHILLIPS LAB,GEOPHYS DIRECTORATE,DIV IONOSPHER EFFECTS GPID,BEDFORD,MA 01731, USA. NR 49 TC 6 Z9 6 U1 1 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-1176 J9 INT J MASS SPECTROM JI Int. J. Mass Spectrom. Ion Process. PD SEP 1 PY 1992 VL 117 IS 1-3 BP 395 EP 414 DI 10.1016/0168-1176(92)80105-A PG 20 WC Physics, Atomic, Molecular & Chemical; Spectroscopy SC Physics; Spectroscopy GA JU838 UT WOS:A1992JU83800026 ER PT J AU CHIEN, LS PALAZOTTO, AN AF CHIEN, LS PALAZOTTO, AN TI DYNAMIC BUCKLING OF COMPOSITE CYLINDRICAL PANELS WITH HIGH-ORDER TRANSVERSE SHEARS SUBJECTED TO A TRANSVERSE CONCENTRATED LOAD SO INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS LA English DT Article ID STABILITY; SHELLS AB The characteristics of dynamic buckling of a geometrically non-linear cylindrical laminated composite panel subjected to a transverse concentrated step load applied at the center is studied. Attention is focused on the dynamic stability of a finite element discrete structural system. The sufficient condition for dynamic buckling, from the energy transfer consideration, is defined as the smallest load for which an unbounded motion is initiated at one generalized displacement. In other words, the dynamic buckling load associated with that generalized coordinate can be predicted by the intersecting point on the static equilibrium curve and the zero potential energy curve. This dynamic buckling criterion can also be observed by the existence of an inflection point on the generalized displacement response curve. Considering the multi-degree-of-freedom for the entire structure without damping, the dynamic buckling criterion used in a single-degree-of-freedom model gives the lower-bound dynamic buckling estimate, which will be shown in the results of the dynamic buckling analysis for a laminated composite arch. The possibility of parametric resonance due to the transverse concentrated step load on a geometrically non-linear system is discussed. Furthermore, the dynamic effects for different loading rates of the applied concentrated load are examined. Finally, the study of the damping effect, which raises the dynamic buckling load, is included. RP CHIEN, LS (reprint author), USAF,INST TECHNOL,DEPT AERONAUT & ASTRONAUT,WRIGHT PATTERSON AFB,OH 45433, USA. NR 17 TC 11 Z9 13 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0020-7462 J9 INT J NONLINEAR MECH JI Int. J. Non-Linear Mech. PD SEP PY 1992 VL 27 IS 5 BP 719 EP 734 DI 10.1016/0020-7462(92)90029-7 PG 16 WC Mechanics SC Mechanics GA JM965 UT WOS:A1992JM96500001 ER PT J AU MOORE, RI COX, JF AF MOORE, RI COX, JF TI AN ANALYSIS OF THE FORECASTING FUNCTION IN LARGE-SCALE INVENTORY SYSTEMS SO INTERNATIONAL JOURNAL OF PRODUCTION RESEARCH LA English DT Article AB This paper examines the forecasting function supporting large-scale inventory systems in leading firms. Little research has been conducted on managing the forecasting function when hundreds and, in some cases, tens of thousands of items are managed. Case studies are used to explore how companies noted for having state-of-the-art inventory systems have designed their supporting forecasting function. Inventory characteristics influencing the design of the forecasting function and general forecasting guidelines are provided. C1 UNIV GEORGIA,TERRY COLL BUSINESS,DEPT MANAGEMENT,ATHENS,GA 30602. RP MOORE, RI (reprint author), USAF,INST TECHNOL,LSMA,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU TAYLOR & FRANCIS LTD PI LONDON PA ONE GUNDPOWDER SQUARE, LONDON, ENGLAND EC4A 3DE SN 0020-7543 J9 INT J PROD RES JI Int. J. Prod. Res. PD SEP PY 1992 VL 30 IS 9 BP 1987 EP 2010 DI 10.1080/00207549208948134 PG 24 WC Engineering, Industrial; Engineering, Manufacturing; Operations Research & Management Science SC Engineering; Operations Research & Management Science GA JL290 UT WOS:A1992JL29000001 ER PT J AU FRENCH, M KOLONAY, RM AF FRENCH, M KOLONAY, RM TI DEMONSTRATION OF STRUCTURAL OPTIMIZATION APPLIED TO WIND-TUNNEL MODEL DESIGN SO JOURNAL OF AIRCRAFT LA English DT Note RP FRENCH, M (reprint author), WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 0 Z9 2 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 SEP-OCT PY 1992 VL 29 IS 5 BP 966 EP 968 DI 10.2514/3.46271 PG 3 WC Engineering, Aerospace SC Engineering GA JQ533 UT WOS:A1992JQ53300031 ER PT J AU PERRAM, GP MELTON, DW THOMPSON, TL ROH, WB AF PERRAM, GP MELTON, DW THOMPSON, TL ROH, WB TI COLLISIONAL DYNAMICS OF THE BRF B3-PI(O+) STATE .2. VIBRATIONAL-ENERGY TRANSFER SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article AB Pulsed, laser induced fluorescence techniques have been used to study vibrational energy transfer within the B 3-PI(0+) state of bromine monofluoride. Rate coefficients for state-to-state vibrational transfer were determined from the observed BrF(B-X) emission in the presence of He, Ne, Ar, Kr, Xe, and CF4. Vibrational states v'= 2, 5, and 6 were probed and time-resolved emission observed from states v'= 0-6. The vibrational relaxation is well described by the Montroll-Shuler model for harmonic oscillators. The fundamental rate coefficient for vibrational transfer from v' = 1 to v' = 0 ranged from 2.2 X 10(-13) to 3.9 X 10(-12) cm3/molecule s for the rare gases and was 4.1 +/- 1.0 X 10(-12) cm3/Molecule s for CF4. The scaling of the vibrational transfer rates with vibrational quantum number is consistent with the predictions of the Landau-Teller theory. Quantum-resolved vibrational transfer rates for BrF, IF, and BrCl are compared to the predictions of the Schwartz, Slawsky, and Herzfeld (SSH) theory. RP PERRAM, GP (reprint author), USAF,INST TECHNOL,DEPT ENGN PHYS,WRIGHT PATTERSON AFB,OH 45433, USA. OI Perram, Glen/0000-0002-4417-3929 NR 23 TC 5 Z9 5 U1 1 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 1 PY 1992 VL 97 IS 5 BP 3258 EP 3264 DI 10.1063/1.463013 PG 7 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA JL372 UT WOS:A1992JL37200044 ER PT J AU REGIAN, JW SHEBILSKE, WL MONK, JM AF REGIAN, JW SHEBILSKE, WL MONK, JM TI VIRTUAL REALITY - AN INSTRUCTIONAL MEDIUM FOR VISUAL-SPATIAL TASKS SO JOURNAL OF COMMUNICATION LA English DT Article ID ACQUISITION; SKILLS C1 GALAXY SCI CORP,LACKLAND AFB,TX. RP REGIAN, JW (reprint author), USAF,ARMSTRONG LAB,BROOKS AFB,TX 78235, USA. NR 28 TC 87 Z9 88 U1 5 U2 6 PU OXFORD UNIV PRESS INC PI CARY PA JOURNALS DEPT, 2001 EVANS RD, CARY, NC 27513 SN 0021-9916 J9 J COMMUN JI J. Commun. PD FAL PY 1992 VL 42 IS 4 BP 136 EP 149 DI 10.1111/j.1460-2466.1992.tb00815.x PG 14 WC Communication SC Communication GA KA504 UT WOS:A1992KA50400007 ER PT J AU BURRIS, DR ANTWORTH, CP AF BURRIS, DR ANTWORTH, CP TI INSITU MODIFICATION OF AN AQUIFER MATERIAL BY A CATIONIC SURFACTANT TO ENHANCE RETARDATION OF ORGANIC CONTAMINANTS SO JOURNAL OF CONTAMINANT HYDROLOGY LA English DT Article ID SORPTION; WATER; SMECTITE; SOILS; CLAY AB Sorption of hexadecyltrimethylammonium chloride (HDTMA), a cationic surfactant, on aquifer material from Columbus AFB, Mississippi, U.S.A., was examined. Transport studies using flow-through columns and a box model aquifer showed that an almost stationary zone of HDTMA-modified aquifer material could be produced in situ without a significant decrease in hydraulic conductivity. Perchloroethylene (PCE) and naphthalene sorption isotherms on the HDTMA-modified aquifer material were linear, and sorption coefficients were increased by over two orders of magnitude relative to the unmodified material. The retardation of PCE by in situ emplaced HDTMA zones within a column was examined. Agreement between batch- and column-derived sorption coefficients and breakthrough curve symmetry indicates that local equilibrium was attained. Significant retardation of a naphthalene plume by an in situ emplaced surfactant zone was demonstrated in the box model aquifer system. The experimental results indicate that it is feasible to create in situ a sorbent zone within an aquifer using cationic surfactants. In most situations, the sorbent zone concept needs to be coupled with contaminant degradation processes for sorbent emplacement to be a practical tool in the remediation of groundwater contamination sites. Sorbent zones may be of benefit in the engineering of suitable environments for microbial or abiotic degradation reactions and by providing time for slow reactions to occur. RP BURRIS, DR (reprint author), USAF,CIVIL ENGN SUPPORT AGCY,CIVIL ENGN LAB,TYNDALL AFB,FL 32403, USA. NR 16 TC 83 Z9 86 U1 0 U2 10 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0169-7722 J9 J CONTAM HYDROL JI J. Contam. Hydrol. PD SEP PY 1992 VL 10 IS 4 BP 325 EP 337 DI 10.1016/0169-7722(92)90014-6 PG 13 WC Environmental Sciences; Geosciences, Multidisciplinary; Water Resources SC Environmental Sciences & Ecology; Geology; Water Resources GA JM854 UT WOS:A1992JM85400004 ER PT J AU BERAN, PS CULICK, FEC AF BERAN, PS CULICK, FEC TI THE ROLE OF NONUNIQUENESS IN THE DEVELOPMENT OF VORTEX BREAKDOWN IN TUBES SO JOURNAL OF FLUID MECHANICS LA English DT Article ID CONTAINER; FLOW AB Numerical solutions of viscous, swirling flows through circular pipes of constant radius and circular pipes with throats have been obtained. Solutions were computed for several values of vortex circulation, Reynolds number and throat/inlet area ratio, under the assumptions of steady flow, rotational symmetry and frictionless flow at the pipe wall. When the Reynolds number is sufficiently large, vortex breakdown occurs abruptly with increased circulation as a result of the existence of non-unique solutions. Solution paths for Reynolds numbers exceeding approximately 1000 are characterized by an ensemble of three inviscid flow types: columnar (for pipes of constant radius), soliton and wavetrain. Flows that are quasi-cylindrical and which do not exhibit vortex breakdown exist below a critical circulation, dependent on the Reynolds number and the throat/inlet area ratio. Wavetrain solutions are observed over a small range of circulation below the critical circulation, while above the critical value, wave solutions with large regions of reversed flow are found that are primarily solitary in nature. The quasi-cylindrical (QC) equations first fail near the critical value, in support of Hall's theory of vortex breakdown (1967). However, the QC equations are not found to be effective in predicting the spatial position of the breakdown structure. C1 CALTECH,JET PROPULS CTR,DEPT AERONAUT,PASADENA,CA 91125. RP BERAN, PS (reprint author), USAF,DEPT AERONAUT & ASTRONAUT,WRIGHT PATTERSON AFB,OH 45433, USA. NR 31 TC 74 Z9 74 U1 0 U2 4 PU CAMBRIDGE UNIV PRESS PI NEW YORK PA 40 WEST 20TH STREET, NEW YORK, NY 10011-4211 SN 0022-1120 J9 J FLUID MECH JI J. Fluid Mech. PD SEP PY 1992 VL 242 BP 491 EP 527 DI 10.1017/S0022112092002477 PG 37 WC Mechanics; Physics, Fluids & Plasmas SC Mechanics; Physics GA JR632 UT WOS:A1992JR63200023 ER PT J AU ADAMS, RJ BANDA, SS AF ADAMS, RJ BANDA, SS TI COMBINED LINEAR QUADRATIC GAUSSIAN AND H-INFINITY CONTROL OF A BENCHMARK PROBLEM SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS LA English DT Article ID ROBUST-CONTROL DESIGN AB A combined linear quadratic Gaussian and H(infinity) design method is applied to a benchmark problem. Robust controllers are derived that minimize an upper bound of a quadratic performance index subject to an H(infinity) norm bound on a disturbance transfer function matrix. Real parameter variations are included in the design through the addition of fictitious weighted disturbances. Three design cases, each with different robustness, performance, and disturbance rejection requirements, are considered for the benchmark problem. Uncertain parameters and noncollocation of the sensor and actuator make the problem nontrivial. Compensators are found that meet the requirements with reasonable control effort, controller complexity, and noise rejection. C1 USAF,CONTROL DYNAM BRANCH,WRIGHT PATTERSON AFB,OH 45433. RP ADAMS, RJ (reprint author), USAF,WRIGHT AERONAUT LABS,FLIGHT DYNAM DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 13 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 0731-5090 J9 J GUID CONTROL DYNAM JI J. Guid. Control Dyn. PD SEP-OCT PY 1992 VL 15 IS 5 BP 1134 EP 1139 DI 10.2514/3.20960 PG 6 WC Engineering, Aerospace; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA JM285 UT WOS:A1992JM28500013 ER PT J AU GOETZ, RL JAIN, VK LOMBARD, CM AF GOETZ, RL JAIN, VK LOMBARD, CM TI EFFECT OF CORE INSULATION ON THE QUALITY OF THE EXTRUDATE IN CANNED EXTRUSIONS OF GAMMA-TITANIUM ALUMINIDE SO JOURNAL OF MATERIALS PROCESSING TECHNOLOGY LA English DT Article AB Non-isothermal forward extrusions of cast gamma-TiAl (Ti-49.5Al-2.5Nb-1.1Mn, at%) were performed with billet temperatures of 1050, 1150, and 1225-degrees-C and a die and container temperature of 260-degrees-C. The billets were canned using 304 stainless steel tubing. Finite-element analysis indicates that rapid heat loss occurs from the canned billet to the die during the extrusion process. The temperature gradient in the billet produces non-uniform microstructure. A technique was developed to insulate the billet with layers of 0.050 inch (1.27 mm) thick silica fabric. The use of an insulator reduces billet heat loss during its transfer from furnace to press and during the extrusion process. Differences in microstructure and mechanical properties of the extrusions performed with and without the silica insulation were investigated and compared. C1 UNIV DAYTON,DEPT MECH & AEROSP ENGN,DAYTON,OH 45469. WRIGHT LAB,MLLN,WRIGHT PATTERSON AFB,OH 45433. RP GOETZ, RL (reprint author), UNIVERSAL ENERGY SYST INC,4401 DAYTON XENIA RD,DAYTON,OH 45432, USA. NR 29 TC 14 Z9 15 U1 0 U2 2 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0924-0136 J9 J MATER PROCESS TECH JI J. Mater. Process. Technol. PD SEP PY 1992 VL 35 IS 1 BP 37 EP 60 DI 10.1016/0924-0136(92)90300-H PG 24 WC Engineering, Industrial; Engineering, Manufacturing; Materials Science, Multidisciplinary SC Engineering; Materials Science GA JT684 UT WOS:A1992JT68400002 ER PT J AU BOWLES, DE MCHUGH, CP SPRADLING, SL AF BOWLES, DE MCHUGH, CP SPRADLING, SL TI EVALUATION OF DEVICES FOR REMOVING ATTACHED RHIPICEPHALUS-SANGUINEUS (ACARI, IXODIDAE) SO JOURNAL OF MEDICAL ENTOMOLOGY LA English DT Note DE ARACHNIDA; BROWN DOG TICK; FORCEPS; REMOVAL DEVICES AB Three types of forceps and a commercially available device, the Tick Solution, were used to remove adult brown dog ticks, Rhipicephalus sanguineus (Latreille), from dogs. The Tick Solution proved least effective at removing ticks, requiring significantly more removal attempts compared with forcep-removal methods. Medium-tipped angled forceps provided the best overall performance. Other advantages and disadvantages of the devices are discussed. RP BOWLES, DE (reprint author), USAF,ARMSTRONG LAB,DIV OCCUPAT MED,ENVIRONM BIOL BRANCH,BROOKS AFB,TX 78235, USA. NR 4 TC 5 Z9 5 U1 0 U2 0 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 SEP PY 1992 VL 29 IS 5 BP 901 EP 902 PG 2 WC Entomology; Veterinary Sciences SC Entomology; Veterinary Sciences GA JN291 UT WOS:A1992JN29100030 PM 1404275 ER PT J AU JORDAN, D AF JORDAN, D TI CONFLICT-RESOLUTION IN AFRICA - DENG,FM, ZARTMAN,IW SO JOURNAL OF MODERN AFRICAN STUDIES LA English DT Book Review RP JORDAN, D (reprint author), USAF ACAD,DEPT POLIT SCI,COLORADO SPRINGS,CO 80840, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU CAMBRIDGE UNIV PRESS PI NEW YORK PA 40 WEST 20TH STREET, NEW YORK, NY 10011-4211 SN 0022-278X J9 J MOD AFR STUD JI J. Mod. Afr. Stud. PD SEP PY 1992 VL 30 IS 3 BP 520 EP 522 DI 10.1017/S0022278X00010910 PG 3 WC Area Studies SC Area Studies GA KB900 UT WOS:A1992KB90000013 ER PT J AU MCCOOL, RA BOMBARD, AT BARTHOLOMEW, DA CALHOUN, BC AF MCCOOL, RA BOMBARD, AT BARTHOLOMEW, DA CALHOUN, BC TI UNEXPLAINED POSITIVE ELEVATED MATERNAL SERUM ALPHA-FETOPROTEIN ASSOCIATED WITH PLACENTA-INCRETA - A CASE-REPORT SO JOURNAL OF REPRODUCTIVE MEDICINE LA English DT Article AB Maternal serum alpha-fetoprotein (MSAFP) is a regularly utilized antenatal screening test for the identification of pregnancies at increased risk for a variety of genetic and nongenetic abnormalities. Complete mid-trimester evaluation of the patient with a positive screening test may fail to reveal an etiology for a positive MSAFP value. This case report concerns an unexplained positive/elevated MSAFP screening test for a patient found at delivery to have abnormal placentation. C1 USAF,MED CTR,DEPT OBSTET & GYNECOL,KEESLER AFB,MS 39534. NR 10 TC 4 Z9 5 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 SEP PY 1992 VL 37 IS 9 BP 826 EP 828 PG 3 WC Obstetrics & Gynecology SC Obstetrics & Gynecology GA JN990 UT WOS:A1992JN99000014 PM 1280687 ER PT J AU SLAWSKY, LD GILSON, RT HOCKLEY, AJ LIBOW, LF AF SLAWSKY, LD GILSON, RT HOCKLEY, AJ LIBOW, LF TI EPIDERMODYSPLASIA-VERRUCIFORMIS ASSOCIATED WITH SEVERE IMMUNODEFICIENCY, LYMPHOMA, AND DISSEMINATED MOLLUSCUM CONTAGIOSUM SO JOURNAL OF THE AMERICAN ACADEMY OF DERMATOLOGY LA English DT Note RP SLAWSKY, LD (reprint author), USAF,KEESLER MED CTR,WASHINGTON,DC 20330, USA. NR 11 TC 16 Z9 16 U1 0 U2 0 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0190-9622 J9 J AM ACAD DERMATOL JI J. Am. Acad. Dermatol. PD SEP PY 1992 VL 27 IS 3 BP 448 EP 450 DI 10.1016/S0190-9622(08)80878-X PG 3 WC Dermatology SC Dermatology GA JL250 UT WOS:A1992JL25000014 PM 1401282 ER PT J AU ROGGEMANN, MC MATSON, CL AF ROGGEMANN, MC MATSON, CL TI POWER SPECTRUM AND FOURIER PHASE SPECTRUM ESTIMATION BY USING FULLY AND PARTIALLY COMPENSATING ADAPTIVE OPTICS AND BISPECTRUM POSTPROCESSING SO JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION LA English DT Article ID OPTICS AB The use of predetection compensation for the effects of atmospheric turbulence combined with postdetection image processing for imaging applications with large telescopes is addressed. Full and partial predetection compensation with adaptive optics is implemented by varying the number of actuators in the deformable mirror. The theoretical expression for the single-frame power spectrum signal-to-noise ratio (SNR) is reevaluated for the compensated case to include the statistics of the compensated optical transfer function. Critical to this analysis is the observation that the compensated optical transfer function does not behave as a circularly complex Gaussian random variable except at high spatial frequencies. Results from a parametric study of performance are presented to demonstrate improvements in power spectrum estimation for both point sources and an extended object and improvements in the Fourier phase spectrum estimation for an extended object. Full compensation is shown to provide a large improvement in the power spectrum SNR over the uncompensated case, while successively smaller amounts of predetection compensation provide smaller improvements, until a low degree of compensation gives results essentially identical to those of the uncompensated case. Three regions of performance were found with respect to the object Fourier phase spectrum estimate obtained from bispectrum postprocessing: (1) the fully compensated case in which bispectrum postprocessing provides no improvement in the phase estimate over that obtained from a fully compensated long-exposure image, (2) a partially compensated regime in which applying bispectrum postprocessing to the compensated images provides a phase spectrum estimation superior to that of the uncompensated bispectrum case, and (3) a poorly compensated regime in which the results are essentially indistinguishable from those of the uncompensated case. Accurate simulations were used to obtain some parameters for the power spectrum SNR analysis and to obtain the Fourier phase spectrum results. C1 SEATTLE PACIFIC UNIV,DEPT ELECT ENGN,SEATTLE,WA 98119. RP ROGGEMANN, MC (reprint author), USAF,PHILLIPS LAB,DIV ADV IMAGING,KIRTLAND AFB,NM 87117, USA. NR 19 TC 34 Z9 34 U1 0 U2 3 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0740-3232 J9 J OPT SOC AM A JI J. Opt. Soc. Am. A-Opt. Image Sci. Vis. PD SEP PY 1992 VL 9 IS 9 BP 1525 EP 1535 DI 10.1364/JOSAA.9.001525 PG 11 WC Optics SC Optics GA JK701 UT WOS:A1992JK70100010 ER PT J AU FUJITANI, RM MILLS, JL WANG, LM TAYLOR, SM AF FUJITANI, RM MILLS, JL WANG, LM TAYLOR, SM TI THE EFFECT OF UNILATERAL INTERNAL CAROTID ARTERIAL-OCCLUSION UPON CONTRALATERAL DUPLEX STUDY - CRITERIA FOR ACCURATE INTERPRETATION SO JOURNAL OF VASCULAR SURGERY LA English DT Article; Proceedings Paper CT 16TH ANNUAL MEETING OF THE SOUTHERN ASSOC FOR VASCULAR SURGERY CY JAN 22-25, 1992 CL ST THOMAS, VI SP SO ASSOC VASC SURG ID DOPPLER ULTRASOUND; STENOSIS; CLASSIFICATION AB To determine the influence of unilateral internal carotid arterial occlusion (ICO) on Doppler frequency spectral analysis (DFSA) of the patent contralateral carotid artery, a retrospective review of 154 patients between July 1987 and December 1991 with angiographically confirmed ICO was performed, correlating duplex and arteriographic findings in a blinded fashion. Biplane arteriograms and bilateral carotid artery duplex studies that used a 5.0 MHz Doppler probe with a 1.5 mm3 sample volume at a 60 degree angle of insonation were performed on all patients. Each carotid artery was categorized by the severity of stenosis as quantified by arteriography: 1% to 15% (n = 41); 16% to 49% (n = 48), 50% to 79% (n = 21), 80% to 99% (n = 34), and bilateral occlusion (n = 10). DFSA peak systolic frequencies were commonly exaggerated in the presence of contralateral ICO and use of standard criteria for DFSA interpretation overestimated bifurcation stenoses in 43 of 89 lesions (48.3%) when determining nonhemodynamically significant lesions (< 50% diameter reduction) with a sensitivity of only 57.3% and specificity of 96.9%. Conversely, prediction of hemodynamically significant lesions (> 50% diameter reduction) with standard criteria had 96.9% sensitivity but only 57.3% specificity. Modification of these criteria to account for the velocity increase or "jet effect" in the ipsilateral carotid artery system increased the sensitivity and specificity to 97.8% in predicting nonhemodynmically and hemodynamically significant stenoses respectively. A Doppler frequency spectrum with a peak systolic frequency (PSF) > 4.0 kHz and end-diastolic frequency (EDF) < 5 kHz with an "open window" distinguished lesions with < 50% diameter reduction. A PSF > 4.5 kHz with associated spectral broadening differentiated stenosis > 50%, whereas an increase in EDF > 5 kHz further categorized those stenoses with 80% to 99% diameter reduction. Kappa statistics were significantly different (p < 0.001) when validating these findings using the standard criteria (K = 0.577 +/- 0.113) versus the modified criteria (K = 0.872 +/-0.060). We conclude that the presence of unilateral ICO influences the resultant flow velocity in the patent companion cerebral vessels, including the contralateral carotid artery and may lead to an overestimation of the actual degree of stenosis by standard DFSA criteria. A simple modification of the DFSA interpretation criteria permits more accurate differentiation between hemodynamically significant and nonhemodynmically significant lesions and is therefore important in the management of progressive extracranial cerebrovascular disease opposite an already occluded carotid artery system. RP FUJITANI, RM (reprint author), WILFORD HALL USAF MED CTR,DEPT SURG,VASC SURG SECT,SGHSG,LACKLAND AFB,TX 78236, USA. OI Mills, Joseph/0000-0002-4955-4384 NR 12 TC 33 Z9 33 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 SEP PY 1992 VL 16 IS 3 BP 459 EP 468 PG 10 WC Surgery; Peripheral Vascular Disease SC Surgery; Cardiovascular System & Cardiology GA JP522 UT WOS:A1992JP52200020 PM 1522650 ER PT J AU WARREN, RQ ANDERSON, SA NKYA, WMMM SHAO, JF HENDRIX, CW MELCHER, GP REDFIELD, RR KENNEDY, RC AF WARREN, RQ ANDERSON, SA NKYA, WMMM SHAO, JF HENDRIX, CW MELCHER, GP REDFIELD, RR KENNEDY, RC TI EXAMINATION OF SERA FROM HUMAN-IMMUNODEFICIENCY-VIRUS TYPE-1 (HIV-1)-INFECTED INDIVIDUALS FOR ANTIBODIES REACTIVE WITH PEPTIDES CORRESPONDING TO THE PRINCIPAL NEUTRALIZING DETERMINANT OF HIV-1 GP120 AND FOR INVITRO NEUTRALIZING ACTIVITY SO JOURNAL OF VIROLOGY LA English DT Article ID HUMAN MONOCLONAL-ANTIBODY; SYNTHETIC PEPTIDES; ENVELOPE GLYCOPROTEIN; INFECTED INDIVIDUALS; ACID SEQUENCE; AMINO-ACIDS; EPITOPE; DOMAIN; CHIMPANZEES; SPECIFICITY AB Sera from human immunodeficiency virus type 1 (HIV-1)-infected individuals from the United States and Tanzania were examined for antibody reactivity to four synthetic peptides which corresponded to the principal neutralizing determinant from the V3 region of HIV-1 gp120. We observed that the majority of sera from both countries contained antibodies reactive with a V3 peptide whose sequence is based on that of the HIV-1 MN isolate. We were unable to establish a relationship between the presence of V3-reactive antibodies, as measured by enzyme-linked immunosorbent assay and neutralization of homologous HIV-1 isolates, in sera from either the United States or Tanzania. We observed that some sera which contained high antibody titers to the V3 peptides failed to neutralize HIV-1, while others with no antibody reactivity to the panel of V3 peptides exhibited in vitro neutralizing activity. These results suggest that neutralizing epitopes exist outside the V3 loop and that the presence of V3-reactive antibodies in sera does not imply in vitro neutralization of the homologous HIV-1 isolate. In addition, it appears that the V3 loop may consist of both neutralizing and nonneutralizing epitopes. The identification of neutralizing as well as nonneutralizing epitopes will be important for the design of potential HIV-1 vaccines. C1 SW FDN BIOMED RES,DEPT VIROL & IMMUNOL,SAN ANTONIO,TX 78284. SW FDN BIOMED RES,CTR AIDS RES,SAN ANTONIO,TX 78284. KILIMANJARO CHRISTIAN MED CTR,MOSHI,TANZANIA. MUHIMBILI MED CTR,DAR ES SALAAM,TANZANIA. WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. WALTER REED ARMY MED CTR,DEPT RETROVIRAL RES,ROCKVILLE,MD 20850. RI Hendrix, Craig/G-4182-2014 OI Hendrix, Craig/0000-0002-5696-8665 FU NIAID NIH HHS [AI28696, AI26462] NR 44 TC 27 Z9 27 U1 0 U2 0 PU AMER SOC MICROBIOLOGY PI WASHINGTON PA 1325 MASSACHUSETTS AVENUE, NW, WASHINGTON, DC 20005-4171 SN 0022-538X J9 J VIROL JI J. Virol. PD SEP PY 1992 VL 66 IS 9 BP 5210 EP 5215 PG 6 WC Virology SC Virology GA JJ198 UT WOS:A1992JJ19800005 PM 1380094 ER PT J AU WATKINS, D PIEHLER, HR SEETHARAMAN, V LOMBARD, CM SEMIATIN, SL AF WATKINS, D PIEHLER, HR SEETHARAMAN, V LOMBARD, CM SEMIATIN, SL TI EFFECT OF HYDROSTATIC-PRESSURE ON THE HOT-WORKING BEHAVIOR OF A GAMMA-TITANIUM ALUMINIDE SO METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE LA English DT Note C1 OIL TECHNOL SERV INC,HOUSTON,TX 77040. UES INC,DAYTON,OH 45432. WRIGHT LAB,MAT DIRECTORATE,WL MLLN,WRIGHT PATTERSON AFB,OH 45433. CARNEGIE MELLON UNIV,DEPT MET ENGN & MAT SCI,PITTSBURGH,PA 15213. RP WATKINS, D (reprint author), CARNEGIE MELLON UNIV,DEPT MET ENGN & MAT SCI,PITTSBURGH,PA 15213, USA. RI SEMIATIN, SHELDON/E-7264-2017 NR 21 TC 11 Z9 11 U1 0 U2 0 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 0360-2133 J9 METALL TRANS A PD SEP PY 1992 VL 23 IS 9 BP 2669 EP 2672 DI 10.1007/BF02658071 PG 4 WC Materials Science, Multidisciplinary SC Materials Science GA JM389 UT WOS:A1992JM38900038 ER PT J AU STRICKLAND, DM GAMBRELL, RD BUTZIN, CA STRICKLAND, K AF STRICKLAND, DM GAMBRELL, RD BUTZIN, CA STRICKLAND, K TI THE RELATIONSHIP BETWEEN BREAST-CANCER SURVIVAL AND PRIOR POSTMENOPAUSAL ESTROGEN USE SO OBSTETRICS AND GYNECOLOGY LA English DT Article ID HORMONE REPLACEMENT THERAPY; ENDOMETRIAL CARCINOMA; RISK; WOMEN; PROGNOSIS; RECEPTORS; MORTALITY; COHORT AB The growth of breast cancer may be mediated by endogenous or exogenous sex steroid hormones, particularly estrogen. However, neither contraceptive nor noncontraceptive estrogen use has been associated definitively with an increased risk of developing breast cancer. In this study, we addressed a corollary question: If a postmenopausal woman develops carcinoma of the breast, is her survival affected by previous use of replacement estrogen? Two hundred fifty-six postmenopausal women with breast cancer entered our Tumor Registry between 1972-1981, inclusive. Of these, 174 took no replacement estrogen before the diagnosis (never-users), 21 had used estrogen previously (past users), and 61 were taking estrogen at the time of diagnosis (current users). Survival analysis revealed a median survival of less than 84 months after diagnosis for never- and past users and greater than 143 months for current users, but these differences were not significant when controlled for stage of disease at diagnosis. We conclude that prior postmenopausal estrogen replacement therapy does not compromise survival in women who subsequently develop carcinoma of the breast. C1 MED COLL GEORGIA,DEPT PHYSIOL & ENDOCRINOL,AUGUSTA,GA 30912. WILFORD HALL USAF MED CTR,DEPT OBSTET & GYNECOL,LACKLAND AFB,TX 78236. NR 38 TC 74 Z9 74 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 1992 VL 80 IS 3 BP 400 EP 404 PN 1 PG 5 WC Obstetrics & Gynecology SC Obstetrics & Gynecology GA JJ702 UT WOS:A1992JJ70200017 PM 1495695 ER PT J AU HARDIMAN, MK AF HARDIMAN, MK TI ROUTINE HYSTERECTOMY FOR LARGE ASYMPTOMATIC UTERINE LEIOMYOMATA - A REAPPRAISAL SO OBSTETRICS AND GYNECOLOGY LA English DT Letter ID VAGINAL HYSTERECTOMY; LEUPROLIDE; DEPOT RP HARDIMAN, MK (reprint author), DEPT OBSTET & GYNECOL,MINOT AFB,ND 58704, USA. NR 4 TC 0 Z9 0 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 1992 VL 80 IS 3 BP 475 EP 475 PN 1 PG 1 WC Obstetrics & Gynecology SC Obstetrics & Gynecology GA JJ702 UT WOS:A1992JJ70200037 PM 1495711 ER PT J AU MURCHISON, DF CHARLTON, DG MOORE, BK AF MURCHISON, DF CHARLTON, DG MOORE, BK TI CARBAMIDE PEROXIDE BLEACHING - EFFECTS ON ENAMEL SURFACE HARDNESS AND BONDING SO OPERATIVE DENTISTRY LA English DT Article AB Three 10% carbamide peroxide home bleaching agents were evaluated to determine their effects on tensile bond strength of resin to enamel and enamel surface hardness. Eighty extracted bicuspid crowns were divided into four groups (three bleaching agents and control), and treated with the bleaching agents for five consecutive days. A bonding site on the buccal surface of each crown was etched with phosphoric acid and an orthodontic bracket bonded in place. The specimens were thermocycled and loaded to failure in an Instron Universal Testing Machine. Five hardness specimens per group were measured prebleaching and after five days' exposure. Analysis by one-way ANOVA indicated no significant differences in bond strength between the four groups (P > 0.05). There were also no differences in pre- or postbleaching Knoop hardness values for the four groups (P > 0.05). This study indicated that in short-term regimens 10% carbamide peroxide does not significantly affect enamel surface hardness or bonding ability. RP MURCHISON, DF (reprint author), USAF,MED CTR,KEESLER AFB,MS 39534, USA. NR 0 TC 61 Z9 66 U1 1 U2 3 PU UNIV WASHINGTON PI SEATTLE PA SCHOOL DENTISTRY SM-57, SEATTLE, WA 98195 SN 0361-7734 J9 OPER DENT JI Oper. Dent. PD SEP-OCT PY 1992 VL 17 IS 5 BP 181 EP 185 PG 5 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA JU444 UT WOS:A1992JU44400004 PM 1289864 ER PT J AU SPARKS, JD HILTON, TJ DAVIS, RD REAGAN, SE AF SPARKS, JD HILTON, TJ DAVIS, RD REAGAN, SE TI THE INFLUENCE OF MATRIX USE ON MICROLEAKAGE IN CLASS-5 GLASS-IONOMER RESTORATIONS SO OPERATIVE DENTISTRY LA English DT Article AB This in vitro study examined the relationship of matrix use to microleakage in class 5 Ketal-Fil glass-ionomer restorations. Class 5 glass-ionomer restorations were placed on the facial and lingual surfaces of 40 extracted human molars. The occlusal margin was located on enamel, and the cervical margin was located on cementum or dentin. Each tooth had one restoration placed with and without the aid of a soft metal matrix. Specimens were thermocycled (1234 cycles, 6-degrees-C - 60-degrees-C, 30-second dwell time) and immersed in 5% methylene blue dye for four hours. The teeth were sectioned occlusogingivally through the center of each restoration, viewed with an optical microscope (X10), and each restoration was scored for dye penetration around the cavity walls. The enamel and cementum margins were scored separately for the extent of marginal leakage. No difference in leakage was found between restorations placed with or without a matrix (P > 0.05). Enamel restorations leaked significantly less than nonenamel margins, regardless of matrix use (P > 0.05). RP SPARKS, JD (reprint author), WILFORD HALL USAF MED CTR,DEPT GEN DENT,LACKLAND AFB,TX 78236, USA. NR 0 TC 4 Z9 4 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 SEP-OCT PY 1992 VL 17 IS 5 BP 192 EP 195 PG 4 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA JU444 UT WOS:A1992JU44400006 PM 1289866 ER PT J AU BURNS, TJ FIELDING, KH ROGERS, SK PINSKI, SD RUCK, DW AF BURNS, TJ FIELDING, KH ROGERS, SK PINSKI, SD RUCK, DW TI OPTICAL HAAR WAVELET TRANSFORM SO OPTICAL ENGINEERING LA English DT Article DE WAVELET TRANSFORMS; HAAR TRANSFORMS; OPTICAL SEGMENTATION ID SPATIAL LIGHT-MODULATOR AB An optical Haar mother wavelet is created with a Semetex 128 x 128 magneto-optic spatial light modulator. Two techniques for dilating the mother wavelet are explored: (1) aperture stopping and (2) operating the SLM in ternary phase-amplitude mode. Discrete resolution levels of a continuous wavelet transform are obtained by optically correlating a binarized image with multiple dilations of the mother wavelet. Frequency-plane masks for the correlation process are generated using thermoplastic holography. Experimental results are compared with a digital simulation of the wavelet transform. RP BURNS, TJ (reprint author), USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,WRIGHT PATTERSON AFB,OH 45433, USA. NR 6 TC 21 Z9 24 U1 0 U2 1 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 SEP PY 1992 VL 31 IS 9 BP 1852 EP 1858 DI 10.1117/12.59917 PG 7 WC Optics SC Optics GA JM047 UT WOS:A1992JM04700007 ER PT J AU HOCKNEY, RW CARMONA, EA AF HOCKNEY, RW CARMONA, EA TI COMPARISON OF COMMUNICATIONS ON THE INTEL IPSC/860 AND TOUCHSTONE-DELTA SO PARALLEL COMPUTING LA English DT Note DE IPSC/860; TOUCHSTONE-DELTA; COMMUNICATION PERFORMANCE; MESSAGE BANDWIDTH; STARTUP TIME AB The Touchstone Delta is found to have an asymptotic bandwidth of 6.7 MB/s which is 2.4 times faster than the iPSC/860, but only about a quarter of the advertised rate of 25 MB/s. The Delta's measured startup time of 61 mus is very little less than the iPSC value of 76 mus, however unlike the iPSC, it is independent (within the error of measurement) of the separation between nodes. C1 USAF,PHILLIPS LAB,PARALLEL COMP RES GRP,ALBUQUERQUE,NM 87117. RP HOCKNEY, RW (reprint author), UNIV SOUTHAMPTON,DEPT ELECTR & COMP SCI,SOUTHAMPTON SO9 5NH,HANTS,ENGLAND. NR 5 TC 8 Z9 8 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0167-8191 J9 PARALLEL COMPUT JI Parallel Comput. PD SEP PY 1992 VL 18 IS 9 BP 1067 EP 1072 DI 10.1016/0167-8191(92)90018-3 PG 6 WC Computer Science, Theory & Methods SC Computer Science GA JX814 UT WOS:A1992JX81400009 ER PT J AU JORDANWAGNER, DL SHREEVE, DF CHARLESWORTH, EN AF JORDANWAGNER, DL SHREEVE, DF CHARLESWORTH, EN TI INTRACTABLE SNEEZING IN CHILDREN - A CASE-REPORT AND REVIEW OF THE LITERATURE SO PEDIATRIC ASTHMA ALLERGY & IMMUNOLOGY LA English DT Review AB Intractable sneezing is rare and may not be familiar to many physicians. A 10-year-old girl had a mild viral illness that culminated in uncontrollable sneezing without any other symptoms. She sneezed with her eyes either opened or closed, and her sleep usually was not interrupted by sneezing. Routine physical and rhinoscopic examination as well as laboratory investigations were normal. Multiple oral and topical medications were ineffective in providing long-term relief from sneezing. The patient had no obvious school or home problems, but evaluation by a child psychiatrist revealed significant internal conflicts. Educationally, she was a "gifted child," yet she displayed infantile behavior, manifested by her continued sleeping with her parents. Family psychotherapy was recommended. Common features of psychogenic intractable sneezing are presence in an adolescent female, sneezing with eyes open, quiescence during sleep, nonresponse to medical therapy, normal physical examination, lack of related symptomatology, underlying psychologic stress, and good response to psychiatric techniques. Early consideration of a psychogenic origin and prompt psychiatric intervention for intractable sneezing may forestall exhaustive diagnostics and result in complete symptom resolution. C1 USAF,MED CTR,ALLERGY IMMUNOL SERV,LACKLAND AFB,TX 78236. NR 0 TC 0 Z9 0 U1 0 U2 0 PU MARY ANN LIEBERT INC PUBL PI LARCHMONT PA 2 MADISON AVENUE, LARCHMONT, NY 10538 SN 0883-1874 J9 PEDIATR ASTHMA ALLER JI Pediatr. Asthma Allergy Immunol. PD FAL PY 1992 VL 6 IS 3 BP 205 EP 210 DI 10.1089/pai.1992.6.205 PG 6 WC Allergy; Immunology; Pediatrics; Respiratory System SC Allergy; Immunology; Pediatrics; Respiratory System GA JZ037 UT WOS:A1992JZ03700007 ER PT J AU DIGERONIMO, RJ AF DIGERONIMO, RJ TI LACK OF EFFICACY OF THE URINE CULTURE AS PART OF THE INITIAL WORK-UP OF SUSPECTED NEONATAL SEPSIS SO PEDIATRIC INFECTIOUS DISEASE JOURNAL LA English DT Note DE NEWBORN; SEPSIS; URINARY TRACT INFECTION ID TRACT INFECTIONS; INFANTS; BACTERIURIA C1 WILFORD HALL USAF MED CTR,DEPT PEDIAT,SAN ANTONIO,TX. NR 14 TC 3 Z9 3 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 SEP PY 1992 VL 11 IS 9 BP 764 EP 766 PG 3 WC Immunology; Infectious Diseases; Pediatrics SC Immunology; Infectious Diseases; Pediatrics GA JN203 UT WOS:A1992JN20300016 PM 1448318 ER PT J AU BASU, B COPPI, B AF BASU, B COPPI, B TI CHANGE OF CONFINEMENT PROPERTIES AND TRANSITION FROM ABSOLUTE TO NONNORMAL MODE MICROINSTABILITIES SO PHYSICS OF FLUIDS B-PLASMA PHYSICS LA English DT Article ID PLASMA; TOKAMAK AB The change in confinement properties that can be induced in experiments, where the plasma is heated by an external injection system, is considered to be related to the transition from a regime where "absolute" microinstabilities are excited at the edge of the plasma column to a regime where these microinstabilities can exist only as non-normal modes because of the effects of the local gradient of the EXB rotation frequency that is induced. Ion-temperature-gradient-driven modes are analyzed as an important example and the threshold conditions for their disappearances as normal modes are evaluated. C1 MIT,CAMBRIDGE,MA 02139. RP BASU, B (reprint author), USAF,PHILLIPS LAB,GEOPHYS DIRECTORATE,BEDFORD,MA 01731, USA. NR 10 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 0899-8221 J9 PHYS FLUIDS B-PLASMA PD SEP PY 1992 VL 4 IS 9 BP 2817 EP 2822 DI 10.1063/1.860155 PG 6 WC Physics, Fluids & Plasmas SC Physics GA JL835 UT WOS:A1992JL83500019 ER PT J AU VONHOFF, DD MCGILL, JR FORSETH, BJ DAVIDSON, KK BRADLEY, TP VANDEVANTER, DR WAHL, GM AF VONHOFF, DD MCGILL, JR FORSETH, BJ DAVIDSON, KK BRADLEY, TP VANDEVANTER, DR WAHL, GM TI ELIMINATION OF EXTRACHROMOSOMALLY AMPLIFIED MYC GENES FROM HUMAN TUMOR-CELLS REDUCES THEIR TUMORIGENICITY SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA LA English DT Article DE HYDROXYUREA; GENE AMPLIFICATION; ONCOGENES; DOUBLE-MINUTE CHROMOSOMES ID DIHYDROFOLATE-REDUCTASE GENES; HOMOGENEOUSLY STAINING REGIONS; HUMAN-BREAST-CANCER; PROTO-ONCOGENE; DOUBLE MINUTES; C-MYC; INSITU HYBRIDIZATION; DNA-MOLECULES; AMPLIFICATION; HYDROXYUREA AB Oncogene amplification has been observed in a broad spectrum of human tumors and has been associated with a poor prognosis for patients with several different types of malignancies. Importantly, at biopsy, the amplified genes localize to acentric extrachromosomal elements such as double-minute chromosomes (DMs) in the vast majority of cases. We show here that treatment of several human tumor cell lines with low concentrations of hydroxyurea accelerates the loss of their extrachromosomally amplified oncogenes. The decreases in MYC copy number in a human tumor cell line correlated with a dramatic reduction in cloning efficiency in soft agar and tumorigenicity in nude mice. No effect on gene copy number or tumorigenicity was observed for a closely related cell line containing the same number of chromosomally amplified MYC genes. One step involved in the accelerated loss of extrachromosomal elements is shown to involve their preferential entrapment of DMs within micronuclei. The data suggest that agents that accelerate the loss of extrachromosomally amplified genes could provide valuable tools for moderating the growth of a large number of human neoplasms. C1 CANC THERAPY & RES CTR,SAN ANTONIO,TX 78229. WILFORD HALL USAF MED CTR,HEMATOL MED ONCOL SERV,SAN ANTONIO,TX 78236. SWEDISH MED CTR,INST TUMOR,DIV CLIN RES,SEATTLE,WA 98109. SALK INST BIOL STUDIES,LA JOLLA,CA 92037. RP VONHOFF, DD (reprint author), UNIV TEXAS,HLTH SCI CTR,DEPT MED,DIV ONCOL,7703 FLOYD CURL DR,SAN ANTONIO,TX 78284, USA. FU NCI NIH HHS [U01 CA 48405]; NIGMS NIH HHS [R01GM27754] NR 38 TC 101 Z9 102 U1 0 U2 0 PU NATL ACAD PRESS PI WASHINGTON PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 SN 0027-8424 J9 P NATL ACAD SCI USA JI Proc. Natl. Acad. Sci. U. S. A. PD SEP 1 PY 1992 VL 89 IS 17 BP 8165 EP 8169 PG 5 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA JL614 UT WOS:A1992JL61400066 PM 1518843 ER PT J AU SKOGEN, LC AF SKOGEN, LC TI THE BITTERSWEET REALITY OF INDIAN DEPREDATION CASES SO PROLOGUE-QUARTERLY OF THE NATIONAL ARCHIVES LA English DT Article RP SKOGEN, LC (reprint author), USAF ACAD,HIST,COLORADO SPRINGS,CO 80840, USA. NR 11 TC 0 Z9 0 U1 0 U2 0 PU NATL ARCHIVES PI WASHINGTON PA TRUST FUND BOARD, WASHINGTON, DC 20408 SN 0033-1031 J9 PROLOGUE JI Prologue-Q. Natl. Archives PD FAL PY 1992 VL 24 IS 3 BP 290 EP 296 PG 7 WC History SC History GA JK880 UT WOS:A1992JK88000007 ER PT J AU BROWN, GR RUNDELL, JR MCMANIS, SE KENDALL, SN ZACHARY, R TEMOSHOK, L AF BROWN, GR RUNDELL, JR MCMANIS, SE KENDALL, SN ZACHARY, R TEMOSHOK, L TI PREVALENCE OF PSYCHIATRIC-DISORDERS IN EARLY STAGES OF HIV-INFECTION SO PSYCHOSOMATIC MEDICINE LA English DT Article DE HUMAN IMMUNODEFICIENCY VIRUS; PSYCHIATRY; PREVALENCE; DEPRESSION; SEXUAL DYSFUNCTION; MILITARY ID HUMAN-IMMUNODEFICIENCY-VIRUS; UNITED-STATES; SCREENING-PROGRAM; SEXUAL-ACTIVITY; DRUG-USE; AIDS; MEN; HEALTH; PSYCHOPATHOLOGY; INDIVIDUALS AB As part of a military universal HIV screening program, 442 men were assessed for the presence of DSM-III-R defined psychiatric disorders and symptoms of anxiety and depression after notification of HIV seroconversion. Of them, 84.4% were in the earliest, asymptomatic stages of disease at the time of interview (96% did not have AIDS). The Structured Clinical Interview for DSM-III-R and Structured Interview Guide for the Hamilton Anxiety and Depression Scales were used. Relevant comparisons were made to Epidemiologic Catchment Area prevalence data. HIV seropositive men were more likely than age-matched men in the community to have current diagnoses of major depression (ages 18-44) and anxiety disorders (ages 25-44). Higher lifetime rates of major depression and alcohol use disorder, and high current prevalence of sexual dysfunction (21.7%) were noted. We conclude that men who become HIV seropositive have high rates of mood and substance use disorders prior to knowledge of seroconversion, and that early in the course of HIV infection men are at risk for developing major depression, anxiety disorders, and disorders of sexual desire. C1 WILFORD HALL USAF MED CTR,HENRY M JACKSON FDN,LACKLAND AFB,TX 78236. WALTER REED ARMY MED CTR,WASHINGTON,DC 20307. WILFORD HALL USAF MED CTR,DEPT PSYCHIAT,ROCKVILLE,MD. HENRY M JACKSON FDN,ROCKVILLE,MD. NR 42 TC 100 Z9 101 U1 4 U2 5 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0033-3174 J9 PSYCHOSOM MED JI Psychosom. Med. PD SEP-OCT PY 1992 VL 54 IS 5 BP 588 EP 601 PG 14 WC Psychiatry; Psychology; Psychology, Multidisciplinary SC Psychiatry; Psychology GA JP995 UT WOS:A1992JP99500007 PM 1438661 ER PT J AU MEIDT, GJ BAUER, KW AF MEIDT, GJ BAUER, KW TI PCRSM - A DECISION SUPPORT SYSTEM FOR SIMULATION METAMODEL CONSTRUCTION SO SIMULATION LA English DT Article DE DECISION SUPPORT SYSTEMS; RESPONSE SURFACE METHODS; METAMODELS AB A general procedural area which applies regression theory, experimental design, and optimization theory is Response Surface Methodology (RSM). Metamodelling using RSM techniques is a popular method for analyzing simulation models. This paper presents a microcomputer based decision support system called PCRSM which acts as an aid to employing RSM in simulation studies. An example of PCRSM's use is presented using a simulation model of a personnel system. C1 USAF,INST TECHNOL,DEPT OPERAT SCI,WRIGHT PATTERSON AFB,OH 45433. RP MEIDT, GJ (reprint author), BURLINGTON NO RAILROAD,DEPT INFORMAT SYST SERV,POB 64962,ST PAUL,MN 55164, USA. NR 16 TC 1 Z9 1 U1 0 U2 0 PU SIMULATION COUNCILS INC PI SAN DIEGO PA PO BOX 17900, SAN DIEGO, CA 92117 SN 0037-5497 J9 SIMULATION JI Simulation PD SEP PY 1992 VL 59 IS 3 BP 183 EP 191 DI 10.1177/003754979205900307 PG 9 WC Computer Science, Interdisciplinary Applications; Computer Science, Software Engineering SC Computer Science GA JW546 UT WOS:A1992JW54600004 ER PT J AU COFFEY, M MCKELLAR, MR FELD, WA REINHARDT, BA AF COFFEY, M MCKELLAR, MR FELD, WA REINHARDT, BA TI A FACILE SYNTHESIS OF 3,4-DIALKOXYTHIOPENES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 WRIGHT STATE UNIV,DEPT CHEM,DAYTON,OH 45435. WRIGHT LAB,MAT DIRECTORATE,POLYMER BRANCH,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 23 PY 1992 VL 204 BP 52 EP ORGN PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA JJ313 UT WOS:A1992JJ31300178 ER PT J AU DOOLEY, DP AF DOOLEY, DP TI COMMERCIAL LABORATORY TESTING FOR CHRONIC FATIGUE SYNDROME SO JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION LA English DT Letter RP DOOLEY, DP (reprint author), WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236, USA. NR 6 TC 0 Z9 0 U1 0 U2 0 PU AMER MEDICAL ASSOC PI CHICAGO PA 515 N STATE ST, CHICAGO, IL 60610 SN 0098-7484 J9 JAMA-J AM MED ASSOC JI JAMA-J. Am. Med. Assoc. PD AUG 19 PY 1992 VL 268 IS 7 BP 873 EP 874 PG 2 WC Medicine, General & Internal SC General & Internal Medicine GA JH588 UT WOS:A1992JH58800031 PM 1640611 ER PT J AU GANS, HD WOODMANSEE, PR AF GANS, HD WOODMANSEE, PR TI AN IMPROVED METHOD OF MODELING POROUS MATERIALS USING FINITE-ELEMENTS SO COMPUTERS & STRUCTURES LA English DT Article ID VOID NUCLEATION; SOLID-SOLUTIONS; GROWTH AB In this paper, a new method for determining the modulus of elasticity of a porous material is developed. This method involves the creation of a finite element model of a specimen of the material. The modulus of elasticity can then be found using limited information from one material sample. The model is three-dimensional, and simulates pores by placing small elements that are non-load bearing into the structure. These voids are randomly and unevenly distributed using a Poisson distribution to better simulate the response of a real porous material to a load. The same finite element model is used to demonstrate the effects on material behavior of changing the pore size and distribution. From this information a trend was noticed and an empirical equation developed that predicts a material's elastic modulus based on porosity and pore size. RP GANS, HD (reprint author), USA,INST TECHNOL,DEPT AERONAUT & ASTRONAUT,WRIGHT PATTERSON AFB,OH 45433, USA. NR 11 TC 4 Z9 5 U1 1 U2 2 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0045-7949 J9 COMPUT STRUCT JI Comput. Struct. PD AUG 17 PY 1992 VL 44 IS 5 BP 1055 EP 1063 DI 10.1016/0045-7949(92)90328-W PG 9 WC Computer Science, Interdisciplinary Applications; Engineering, Civil SC Computer Science; Engineering GA JM702 UT WOS:A1992JM70200011 ER PT J AU LENIHAN, DJ COYNE, E FELDMAN, B BLACK, R COLLINS, G AF LENIHAN, DJ COYNE, E FELDMAN, B BLACK, R COLLINS, G TI FREQUENCY OF LATE POTENTIALS ON SIGNAL-AVERAGED ELECTROCARDIOGRAMS DURING THALLIUM STRESS-TESTING CORONARY-ARTERY DISEASE SO AMERICAN JOURNAL OF CARDIOLOGY LA English DT Article ID NONSUSTAINED VENTRICULAR-TACHYCARDIA; BODY-SURFACE QRS; MYOCARDIAL-INFARCTION; PROGNOSTIC-SIGNIFICANCE; ISCHEMIA; STIMULATION; ARRHYTHMIAS; VARIABLES; COMPLEX; DOGS AB Late potentials detected by signal-averaged electrocardiography (SAECG) are an important noninvasive indicator identifying patients with previous myocardial infarction at risk for developing ventricular tachycardia. The role of myocardial ischemia in the development of late potentials is undefined. This study attempts to determine if late potentials on SAECG can be produced during scintigraphically proven ischemia. A signal-averaged electrocardiogram was obtained before and immediately after single-photon emission computed tomography thallium exercise testing in 51 patients. Reversible ischemia was documented in 25 cases with no significant changes in the parameters of SAECG; patients with previous myocardial infarction (n = 10) also had no significant changes from baseline. Multivariate analysis with respect to reversible ischemia and previous myocardial infarction was unrevealing. Patients with late potentials at baseline (n = 10) who developed reversible ischemia (n = 5) had a shorter QRS duration than those with late potentials at baseline and no reversible ischemia. The data indicate that exercise-induced scintigraphically proven ischemia does not alter SAECG even in the presence of previous myocardial infarction. Patients with late potentials at baseline may actually have a shortened QRS duration during reversible ischemia as opposed to the expected lengthening of the QRS. C1 USAF,MED CTR,WRIGHT PATTERSON AFB,OH 45433. NR 23 TC 14 Z9 14 U1 0 U2 0 PU EXCERPTA MEDICA INC PI NEW YORK PA 245 WEST 17TH STREET, NEW YORK, NY 10011 SN 0002-9149 J9 AM J CARDIOL JI Am. J. Cardiol. PD AUG 15 PY 1992 VL 70 IS 4 BP 432 EP 435 DI 10.1016/0002-9149(92)91185-7 PG 4 WC Cardiac & Cardiovascular Systems SC Cardiovascular System & Cardiology GA JH364 UT WOS:A1992JH36400004 PM 1642179 ER PT J AU WOLF, PJ AF WOLF, PJ TI THE PLASMA PROPERTIES OF LASER-ABLATED SIO2 SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID THIN-FILM DEPOSITION; EVAPORATION; SILICON; MODEL AB The optical emission from laser-produced plasmas generated by 1.06-mu-m irradiation of SiO2 targets at a flux of 7 X 10(10) W cm-2 was recorded and analyzed between 250 and 800 nm. The ionization states of Si and O were mapped as a function of both time from the incident laser pulse and location from the front surface of the target. Electron temperatures were calculated using the relative emission intensities of Si(II) and O(II) ionization states (T(e)=3.4 eV), and an electron number density was determined from the Stark-broadened linewidths of five Si(II) emission lines. The ablated material was collected on Si substrates to examine the particulate nature of the plasma. Thin films were grown in the process and properties of these films were examined using IR reflectance and transmittance spectroscopy, scanning electron microscope analyses, and Auger electron spectroscopy. RP WOLF, PJ (reprint author), USAF ACAD,FRANK J SEILER RES LAB,COLORADO SPRINGS,CO 80840, USA. NR 31 TC 45 Z9 45 U1 0 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 AUG 15 PY 1992 VL 72 IS 4 BP 1280 EP 1289 DI 10.1063/1.351734 PG 10 WC Physics, Applied SC Physics GA JJ226 UT WOS:A1992JJ22600010 ER PT J AU REYNOLDS, DC EVANS, KR JOGAI, B STUTZ, CE YU, PW AF REYNOLDS, DC EVANS, KR JOGAI, B STUTZ, CE YU, PW TI FINE-STRUCTURE FEATURES DUE TO WAVE-FUNCTION LOCALIZATION IN COUPLED GAAS-ALXGA1-XAS QUANTUM-WELLS SO PHYSICAL REVIEW B LA English DT Article ID MOLECULAR-BEAM EPITAXY; INTERFACE DISORDER; OPTICAL-PROPERTIES; SUPER-LATTICES; SUPERLATTICES; PHOTOLUMINESCENCE; GAAS-GA1-XALXAS; GROWTH; PHOTOREFLECTANCE; FLUCTUATIONS AB Photoluminescence (PL) measurements performed on nominally symmetric, coupled, double GaAs-Al0.3Ga0.7As quantum wells grown by molecular-beam epitaxy (MBE) show fine-structure features within the observed excitonic transitions. This fine structure is interpreted in terms of wave-function-localization effects arising from deviations of the double wells from being perfectly symmetric. If the coupled-well structure is slightly asymmetric, with one well slightly larger than the other, the symmetric wave function is strongly localized in the wider well, while the antisymmetric wave function is strongly localized in the narrower well. Theory predicts that the energy spread covered by the fine-structure features resulting from the collapse of excitons associated with the symmetric combination of isolated electron and heavy-hole wave functions will be greater than that for the collapse of excitons associated with the antisymmetric combination of isolated electron and heavy-hole wave functions, in agreement with the experimental results reported here. Additionally, parity-forbidden as well as parity-allowed transitions are observed. The breakdown of the parity selection rule is believed to result from symmetry reduction arising from the presence of layer imperfections such as the clearly observed thickness variations. In some cases extrinsic transitions are also observed; magnetic-field-dependent PL measurements show these to be free-to-bound transitions (free hole to bound electron). Fine structure is also observed in the extrinsic transitions and is similar in nature to that observed for the intrinsic transitions. The asymmetry of the coupled wells is ascribed to surface kinetic phenomena occurring during MBE growth. C1 WRIGHT LAB,SOLID STATE ELECTR DIRECTORATE,ELRA,WRIGHT PATTERSON AFB,OH 45433. RP REYNOLDS, DC (reprint author), WRIGHT STATE UNIV,RES CTR,DAYTON,OH 45435, USA. NR 27 TC 2 Z9 2 U1 1 U2 1 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 AUG 15 PY 1992 VL 46 IS 8 BP 4748 EP 4751 DI 10.1103/PhysRevB.46.4748 PG 4 WC Physics, Condensed Matter SC Physics GA JK725 UT WOS:A1992JK72500041 ER PT J AU ROMAN, I WARD, CH AF ROMAN, I WARD, CH TI ACOUSTIC-EMISSION CHARACTERIZATION OF THE DEFORMATION AND FRACTURE OF A TI3AL ALLOY SO SCRIPTA METALLURGICA ET MATERIALIA LA English DT Article C1 HEBREW UNIV JERUSALEM,GRAD SCH APPL SCI & TECHNOL,IL-91904 JERUSALEM,ISRAEL. RP ROMAN, I (reprint author), WRIGHT LAB,MLLM,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. OI Ward, Charles/0000-0002-5813-439X NR 7 TC 3 Z9 3 U1 0 U2 2 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 15 PY 1992 VL 27 IS 4 BP 413 EP 418 DI 10.1016/0956-716X(92)90203-Q PG 6 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA JE545 UT WOS:A1992JE54500006 ER PT J AU HAYNES, MJ SUKONNIK, IM SEMIATIN, SL AF HAYNES, MJ SUKONNIK, IM SEMIATIN, SL TI CHARACTERIZATION OF PLASTIC AND CRYSTALLOGRAPHIC ANISOTROPY IN AN ALPHA-2 TITANIUM ALUMINIDE SO SCRIPTA METALLURGICA ET MATERIALIA LA English DT Article C1 TEXAS INSTRUMENTS INC,ATTLEBORO,MA 02703. WRIGHT LAB,MLLN,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP HAYNES, MJ (reprint author), RENSSELAER POLYTECH INST,DEPT MET ENGN,TROY,NY 12180, USA. RI SEMIATIN, SHELDON/E-7264-2017 NR 9 TC 1 Z9 1 U1 0 U2 1 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 15 PY 1992 VL 27 IS 4 BP 461 EP 464 DI 10.1016/0956-716X(92)90211-V PG 4 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA JE545 UT WOS:A1992JE54500014 ER PT J AU SOREF, RA AF SOREF, RA TI NONLINEAR REFRACTIVE-INDEX OF IV-IV COMPOUND SEMICONDUCTORS SO APPLIED OPTICS LA English DT Note ID BAND-GAP AB An E(g)-4 scaling law is used to estimate the intensity-dependent refractive index n2 of the new binary zinc blende semiconductors GeC, beta-SiC, SiGe, SnC, SiSn, and GeSn from known n2 values for Si and Ge. RP SOREF, RA (reprint author), USAF,ROME LAB,BEDFORD,MA 01731, USA. NR 7 TC 11 Z9 11 U1 0 U2 7 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 1992 VL 31 IS 23 BP 4627 EP 4629 PG 3 WC Optics SC Optics GA JH623 UT WOS:A1992JH62300004 PM 20725470 ER PT J AU HESS, JW AF HESS, JW TI AIRCRAFT VULNERABILITY AND BATTLE DAMAGE REPAIR - AIRCRAFT BATTLE DAMAGE REPAIR - A FORCE MULTIPLIER SO AEROSPACE AMERICA LA English DT Article RP HESS, JW (reprint author), USAF,WRIGHT AERONAUT LABS,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 AUG PY 1992 VL 30 IS 8 BP 50 EP 52 PG 3 WC Engineering, Aerospace SC Engineering GA JG683 UT WOS:A1992JG68300014 ER PT J AU WEISENBACH, M BENNETT, G AF WEISENBACH, M BENNETT, G TI DESIGNING AIRCRAFT FOR HARDNESS AND REPAIRABILITY SO AEROSPACE AMERICA LA English DT Article RP WEISENBACH, M (reprint author), USAF,DIV AERONAUT SYST,WASHINGTON,DC 20330, 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 AUG PY 1992 VL 30 IS 8 BP 52 EP 53 PG 2 WC Engineering, Aerospace SC Engineering GA JG683 UT WOS:A1992JG68300015 ER PT J AU WOODY, WR AF WOODY, WR TI HARDENING AGAINST DIRECTED ENERGY WEAPONS SO AEROSPACE AMERICA LA English DT Article RP WOODY, WR (reprint author), USAF,WRIGHT AERONAUT LABS,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 0 Z9 0 U1 1 U2 1 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 AUG PY 1992 VL 30 IS 8 BP 54 EP 55 PG 2 WC Engineering, Aerospace SC Engineering GA JG683 UT WOS:A1992JG68300016 ER PT J AU BARNES, J PETERS, RL AF BARNES, J PETERS, RL TI THE CHALLENGE OF COMMERCIAL AIRCRAFT SURVIVABILITY SO AEROSPACE AMERICA LA English DT Article RP BARNES, J (reprint author), USAF,WRIGHT AERONAUT LABS,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 AUG PY 1992 VL 30 IS 8 BP 55 EP 56 PG 2 WC Engineering, Aerospace SC Engineering GA JG683 UT WOS:A1992JG68300017 ER PT J AU START, RJ GREENBERG, DJ HERMAN, NL AF START, RJ GREENBERG, DJ HERMAN, NL TI USE OF A WILSON CONVEX FRAME IN REMOVING IRRETRIEVABLE EPIDURAL CATHETERS SO ANESTHESIA AND ANALGESIA LA English DT Letter RP START, RJ (reprint author), WILFORD HALL USAF MED CTR,DEPT ANESTHESIOL SGHSA,LACKLAND AFB,TX 78236, USA. NR 1 TC 3 Z9 3 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 AUG PY 1992 VL 75 IS 2 BP 305 EP 306 PG 2 WC Anesthesiology SC Anesthesiology GA JE573 UT WOS:A1992JE57300033 PM 1632551 ER PT J AU ROBERTSON, JB SPAIN, JC HADDOCK, JD GIBSON, DT AF ROBERTSON, JB SPAIN, JC HADDOCK, JD GIBSON, DT TI OXIDATION OF NITROTOLUENES BY TOLUENE DIOXYGENASE - EVIDENCE FOR A MONOOXYGENASE REACTION SO APPLIED AND ENVIRONMENTAL MICROBIOLOGY LA English DT Article ID PSEUDOMONAS-PUTIDA F1; MICROBIAL TRANSFORMATION; NITROAROMATIC COMPOUNDS; PARA-NITROPHENOL; DEGRADATION AB Pseudomonas putida F1 and Pseudomonas sp. strain JS150 initiate toluene degradation by incorporating molecular oxygen into the aromatic nucleus to form cis-1,2-dihydroxy-3-methylcyclohexa-3,5-diene. When toluene-grown cells were incubated with 2- and 3-nitrotoluene, the major products identified were 2- and 3-nitrobenzyl alcohol, respectively. The same cells oxidized 4-nitrotoluene to 2-methyl-5-nitrophenol and 3-methyl-6-nitrocatechol. Escherichia coli JM109(pDTG601), which contains the toluene dioxygenase genes from P. putida F1 under the control of the tac promoter, oxidized the isomeric nitrotoluenes to the same metabolites as those formed by P. putida F1 and Pseudomonas sp. strain JS150. These results extend the range of substrates known to be oxidized by this versatile enzyme and demonstrate for the first time that toluene dioxygenase can oxidize an aromatic methyl substituent. C1 USAF,CIVIL ENGN SUPPORT AGCY,TYNDALL AFB,FL 32403. UNIV IOWA,DEPT MICROBIOL,IOWA CITY,IA 52242. UNIV IOWA,CTR BIOCATALYSIS & BIOPROC,IOWA CITY,IA 52242. NR 27 TC 52 Z9 53 U1 1 U2 5 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 AUG PY 1992 VL 58 IS 8 BP 2643 EP 2648 PG 6 WC Biotechnology & Applied Microbiology; Microbiology SC Biotechnology & Applied Microbiology; Microbiology GA JF839 UT WOS:A1992JF83900048 PM 1514810 ER PT J AU JOHNSON, GP WESTON, TD WARD, JE AF JOHNSON, GP WESTON, TD WARD, JE TI TREATMENT OF ACUTE DIARRHEA WITH NORFLOXACIN DURING DESERT STORM DEPLOYMENT SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article ID STATES-MILITARY PERSONNEL; TRAVELERS DIARRHEA; EGYPT; PROPHYLAXIS AB A retrospective study on the treatment of diarrhea in a U.S. Air Force Wing deployed to Egypt during Operation Desert Storm was conducted. Two groups of patients were compared for treatment efficacy. One group was treated with norfloxacin 800 mg as a single dose with the onset of symptoms. The other group was treated conservatively. The group treated with norfloxacin was noted to become asymptomatic in one-fourth the time of the group treated conservatively. This was highly significant, statistically, and in practice. It is recommended that diarrhea be treated aggressively during deployments to third world countries. RP JOHNSON, GP (reprint author), FIFTH MED GRP,AEROSP MED,MINOT AFB,ND 58705, USA. NR 10 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 AUG PY 1992 VL 63 IS 8 BP 717 EP 720 PG 4 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA JH361 UT WOS:A1992JH36100011 PM 1510647 ER PT J AU WATSON, GM AF WATSON, GM TI GROW,MALCOLM AND THE RUSSIAN CONNECTION (REPRINTED FROM US AIR-FORCE MEDICAL-SERVICE DIGEST, VOL 42, PG 18-22, 1991) SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Reprint RP WATSON, GM (reprint author), USAF,CTR AIR FORCE HIST,WASHINGTON,DC 20330, USA. NR 2 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 1992 VL 63 IS 8 BP 731 EP 734 PG 4 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA JH361 UT WOS:A1992JH36100014 PM 1510650 ER PT J AU KOLESAR, ES AF KOLESAR, ES TI A NOVEL TOXIC GAS MICROSENSOR SO CHEMTECH LA English DT Article ID NITROGEN-DIOXIDE; PHTHALOCYANINES RP KOLESAR, ES (reprint author), USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433, USA. NR 14 TC 1 Z9 1 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0009-2703 J9 CHEMTECH JI Chemtech PD AUG PY 1992 VL 22 IS 8 BP 504 EP 510 PG 7 WC Chemistry, Applied SC Chemistry GA JH793 UT WOS:A1992JH79300011 ER PT J AU TIPTON, T GERDOM, LE AF TIPTON, T GERDOM, LE TI POLYMERIZATION AND TRANSALKYLATION REACTIONS OF TOLUENE ON CU(II)-MONTMORILLONITE SO CLAYS AND CLAY MINERALS LA English DT Article DE FTIR; GC MS; GEL PERMEATION CHROMATOGRAPHY; MONTMORILLONITE; POLYMERIZATION; TOLUENE; TRANSALKYLATION ID AROMATIC-MOLECULES; MONTMORILLONITE; SURFACES; CHEMISORPTION; CATALYSIS; COMPLEXES; SILICATES; SMECTITE; CLAY AB Products resulting from the reaction of toluene with Cu(II)-montmorillonite were analyzed using GC/MS, HPLC/MS, GPC, and FTIR methods. Numerous oligomers of toluene were observed, extending at least as high as the resolution limit (1500 g/mol) of the GPC column. The FTIR spectrum of the nonvolatile components of the extract was very similar to that of liquid toluene. GC/MS data on the volatile components revealed dimers, trimers, and a multitude of transmethylated products. Oligomerization proceeded via both ring-ring (i.e., polyphenyl) and ring-methyl linkages. The primary transmethylated products were tert-butylbenzene and isopropylxylene, indicating a competition between ring- and side-chain methylations. The side-chain substitutions cannot be explained in terms of the aromatic radical cation intermediate which typically forms in arene/clay reactions. A consideration of alkylbenzene reactions observed in various other media suggests that the present transmethylation reactions occur via a benzyl cation intermediate. C1 MOBILE COLL,DIV NAT SCI,MOBILE,AL 36663. RP TIPTON, T (reprint author), USAF,CIVIL ENGN SUPPORT AGCY,CIVIL ENGN LAB,TYNDALL AFB,FL 32403, USA. NR 28 TC 1 Z9 1 U1 2 U2 6 PU CLAY MINERALS SOCIETY PI BOULDER PA PO BOX 4416, BOULDER, CO 80306 SN 0009-8604 J9 CLAY CLAY MINER JI Clay Clay Min. PD AUG PY 1992 VL 40 IS 4 BP 429 EP 435 DI 10.1346/CCMN.1992.0400407 PG 7 WC Chemistry, Physical; Geosciences, Multidisciplinary; Mineralogy; Soil Science SC Chemistry; Geology; Mineralogy; Agriculture GA KJ158 UT WOS:A1992KJ15800007 ER PT J AU CAMM, JH MURATA, SM AF CAMM, JH MURATA, SM TI EMERGENCY DENTAL MANAGEMENT OF A PATIENT WITH VONWILLEBRANDS DISEASE SO ENDODONTICS & DENTAL TRAUMATOLOGY LA English DT Article DE VONWILLEBRANDS DISEASE; EMERGENCY TREATMENT; BLOOD DYSCRASIA AB A patient with von Willebrand's disease presenting for dental treatment requires thorough evaluation prior to the determination of a proper course of treatment. In this case report, a patient with von Willebrand's disease presented to the emergency room with dental trauma. A modified treatment plan, taking into account the severity of the patient's systemic illness and the need for medical management, yielded successful results. RP CAMM, JH (reprint author), WILFORD HALL USAF MED CTR,SGDG,LACKLAND AFB,TX 78236, USA. NR 0 TC 2 Z9 2 U1 0 U2 0 PU MUNKSGAARD INT PUBL LTD PI COPENHAGEN PA 35 NORRE SOGADE, PO BOX 2148, DK-1016 COPENHAGEN, DENMARK SN 0109-2502 J9 ENDOD DENT TRAUMATOL JI Endod. Dent. Traumatol. PD AUG PY 1992 VL 8 IS 4 BP 176 EP 181 PG 6 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA JL083 UT WOS:A1992JL08300007 PM 1291307 ER PT J AU JAUCHEM, JR AF JAUCHEM, JR TI ELECTRIC-POWER AND BREAST-CANCER SO FASEB JOURNAL LA English DT Letter ID ELECTROMAGNETIC-FIELDS; EXPOSURE RP JAUCHEM, JR (reprint author), ARMSTRONG LAB,OCCUPAT & ENVIRONM HLTH DIRECTORATE,DIV DIRECTED ENERGY,BLDG 1184,BROOKS AFB,TX 78235, USA. NR 14 TC 1 Z9 1 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 AUG PY 1992 VL 6 IS 11 BP 3016 EP 3016 PG 1 WC Biochemistry & Molecular Biology; Biology; Cell Biology SC Biochemistry & Molecular Biology; Life Sciences & Biomedicine - Other Topics; Cell Biology GA JJ665 UT WOS:A1992JJ66500018 PM 1644266 ER PT J AU CHARLTON, SG AF CHARLTON, SG TI ESTABLISHING HUMAN-FACTORS CRITERIA FOR SPACE CONTROL-SYSTEMS SO HUMAN FACTORS LA English DT Article AB This paper describes the development of a human factors methodology and its application to the operational test and evaluation of space control systems. The method uses a correlational approach to link human factors measures to the mission effectiveness of space control systems. Experiment 1 describes an initial wide-spectrum attempt to identify human factors predictors of system performance. Based on the results of Experiment 1, the human factors measures and analysis method were refined and applied in the test of an operational satellite control system in Experiment 2. Experiment 3 applied the same methodology to a different satellite control system in order to determine the generalizability of the approach. The methodology worked with more than one system and was robust with respect to changes in personnel and location. The methodology. was sensitive to changes in software, hardware, and procedures, and it yielded data that correctly reflected those changes. RP CHARLTON, SG (reprint author), USAF,CTR OPERAT TEST & EVALUAT,DIV AEROMED HUMAN FACTORS,KIRTLAND AFB,NM 87117, USA. OI Charlton, Samuel/0000-0002-9629-6226 NR 9 TC 1 Z9 1 U1 0 U2 0 PU HUMAN FACTORS SOC PI SANTA MONICA PA BOX 1369, SANTA MONICA, CA 90406 SN 0018-7208 J9 HUM FACTORS JI Hum. Factors PD AUG PY 1992 VL 34 IS 4 BP 485 EP 501 PG 17 WC Behavioral Sciences; Engineering, Industrial; Ergonomics; Psychology, Applied; Psychology SC Behavioral Sciences; Engineering; Psychology GA JK876 UT WOS:A1992JK87600010 ER PT J AU IKOSSIANASTASIOU, K EZIS, A EVANS, KR STUTZ, CE AF IKOSSIANASTASIOU, K EZIS, A EVANS, KR STUTZ, CE TI LOW-TEMPERATURE CHARACTERIZATION OF HIGH-CURRENT-GAIN GRADED-EMITTER ALGAAS/GAAS NARROW-BASE HETEROJUNCTION BIPOLAR-TRANSISTOR SO IEEE ELECTRON DEVICE LETTERS LA English DT Article ID MOLECULAR-BEAM EPITAXY; GAAS IBT AB Narrow-base heterojunction bipolar transistors (NBHBT's) in the AlGaAs / GaAs material system, with a nominal base thickness of 50 angstrom exhibit maximum small-signal common-emitter current gains h(fe) of 1400 at 300 K and 3000 at 80 K. The performance of the device is attributed to the superlattice graded-emitter contact and a novel planar base access fabrication process. Low-temperature measurements indicate that the maximum current gain increases exponentially with decreasing temperature until it saturates around 200 K, suggesting a tunneling limited current transport mechanism. C1 WRIGHT LAB,SOLID STATE ELECTR DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. UNIVERSAL ENERGY SYST,DAYTON,OH 45432. RP IKOSSIANASTASIOU, K (reprint author), LOUISIANA STATE UNIV,DEPT ELECT & COMP ENGN,SOLID STATE LAB,BATON ROUGE,LA 70803, USA. NR 16 TC 10 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 0741-3106 J9 IEEE ELECTR DEVICE L JI IEEE Electron Device Lett. PD AUG PY 1992 VL 13 IS 8 BP 414 EP 417 DI 10.1109/55.192776 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA JE794 UT WOS:A1992JE79400009 ER PT J AU COX, RA SUN, SH DOLAN, MJ HARRISON, JL AF COX, RA SUN, SH DOLAN, MJ HARRISON, JL TI LOCALIZATION OF THE TUBE PRECIPITIN AND COMPLEMENT-FIXATION ANTIGENS OF COCCIDIOIDES-IMMITIS BY IMMUNOELECTRON MICROSCOPY WITH MURINE MONOCLONAL-ANTIBODIES SO INFECTION AND IMMUNITY LA English DT Article ID WALL FRACTION; REACTIVITY; PROTEIN AB The cellular localization of the tube precipitin (TP) and complement fixation (CF) antigens of Coccidioides immitis was examined by immunoelectron microscopy with murine immunoglobulin G1 monoclonal antibodies directed against the TP and CF antigens, respectively. Immunoelectron microscopic analyses of saprobic- and parasitic-phase cells showed that the TP antigen is present at a high concentration within the inner cell wall layer and along the plasma membrane. The antigen was also detected, at a lesser concentration, within cytoplasmic vacuoles. In contrast to the predominant localization of the TP antigen in the cell walls, the CF antigen resides primarily within the cytoplasm, where it appears to be dispersed throughout the cytoplasm rather than associated with a specific cytoplasmic organelle. A sparse amount of the CF antigen within the inner cell walls was also demonstrable. The localization of the TP and CF antigens throughout the morphogenetic phases of C. immitis has important implications in antigen production and in analyses of host response in coccidioidomycosis. C1 AUDIE L MURPHY MEM VET ADM MED CTR,SAN ANTONIO,TX 78284. WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. RP COX, RA (reprint author), SAN ANTONIO STATE CHEST HOSP,DEPT RES IMMUNOL,SAN ANTONIO,TX 78223, USA. FU NIAID NIH HHS [AI21431] NR 25 TC 4 Z9 4 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 AUG PY 1992 VL 60 IS 8 BP 3315 EP 3324 PG 10 WC Immunology; Infectious Diseases SC Immunology; Infectious Diseases GA JG023 UT WOS:A1992JG02300041 PM 1639499 ER PT J AU FREEMAN, TM HYLANDER, R ORTIZ, A MARTIN, ME AF FREEMAN, TM HYLANDER, R ORTIZ, A MARTIN, ME TI IMPORTED FIRE ANT IMMUNOTHERAPY - EFFECTIVENESS OF WHOLE-BODY EXTRACTS SO JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY LA English DT Article DE IMMUNOTHERAPY; IMPORTED FIRE ANT; HYMENOPTERA; WHOLE BODY EXTRACT ID VENOM IMMUNOTHERAPY; HYPERSENSITIVITY; ALLERGY; SENSITIVITY AB The purpose of this study was to determine if whole body extract (WBE) immunotherapy for imported fire ant (IFA) hypersensitivity is effective. This evaluation was carried out by retrospectively interviewing 76 patients with a history of generalized allergic reactions to IFA stings and positive skin tests to IFA-WBE. The study groups consisted of 65 patients on immunotherapy and 11 similar patients who were not treated for various reasons. In addition, an IFA sting challenge was performed in 30 volunteers of the 65 patients on immunotherapy. The retrospective review showed that of the 65 patients on immunotherapy there had been 112 subsequent field re-sting episodes in 47 patients. Only one sting episode in this group (2.1%) produced an anaphylactic reaction. Six of the 11 patients not on immunotherapy have had subsequent field resting episodes, and each has had a systemic reaction. Repeat skin testing on 31 of the 65 patients in the immunotherapy group showed persistent positive responses in five (16%), but each was at a lower dilution than initially. Responses of the other 26 of the 31 patients who had skin testing had become negative. The four untreated patients who were available for skin testing continued to have positive responses at comparable dilutions on skin testing. Sting challenges carried out on 30 volunteers from the 65 patients (all from the 31 who had repeat skin tests) on immunotherapy resulted in only local reactions. Therefore it appears IFA-WBE is effective in decreasing the incidence of anaphylaxis during subsequent field stings; reducing specific immunoglobulin E as demonstrated by skin testing; and protecting against systemic reactions provoked by a sting challenge with a single IFA. RP FREEMAN, TM (reprint author), WILFORD HALL USAF MED CTR,DEPT ALLERGY IMMUNOL,LACKLAND AFB,TX 78236, USA. NR 15 TC 65 Z9 67 U1 0 U2 1 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 AUG PY 1992 VL 90 IS 2 BP 210 EP 215 DI 10.1016/0091-6749(92)90073-B PG 6 WC Allergy; Immunology SC Allergy; Immunology GA JJ423 UT WOS:A1992JJ42300010 PM 1500625 ER PT J AU PUGH, RD SABOCHICK, MJ LUKE, TE AF PUGH, RD SABOCHICK, MJ LUKE, TE TI A COMPARISON OF FERROELECTRIC AGING IN BULK AND THIN-FILM MATERIALS SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID MEMORIES; CERAMICS AB Thin-film ferroelectric device researchers have reported that hysteresis loop translation-a characteristic of bulk ferroelectric aging-does not occur in thin-film devices. This work examines ferroelectric aging in thin-film materials using a novel measurement procedure that combines the techniques used in bulk and thin-film testing. The results show that the aging characteristics of thin-film ferroelectric materials are the same as those exhibited by bulk materials. In addition, the primary and secondary waiting time effects are shown to be directly related to aging. C1 USAF, INST TECHNOL, DEPT ENGN PHYS, WRIGHT PATTERSON AFB, OH 45433 USA. NR 19 TC 15 Z9 15 U1 0 U2 4 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD AUG 1 PY 1992 VL 72 IS 3 BP 1049 EP 1055 DI 10.1063/1.351831 PG 7 WC Physics, Applied SC Physics GA JF868 UT WOS:A1992JF86800034 ER PT J AU HEDGE, JW TEACHOUT, MS AF HEDGE, JW TEACHOUT, MS TI AN INTERVIEW APPROACH TO WORK SAMPLE CRITERION MEASUREMENT SO JOURNAL OF APPLIED PSYCHOLOGY LA English DT Article ID EMPLOYMENT INTERVIEW; SITUATIONAL INTERVIEW; VALIDITY; IMPACT AB A variety of measurement techniques have been used to assess job proficiency, including hands-on work sample tests, job knowledge tests, and ratings. The current research effort examined the viability of an interview approach to work sample criterion measurement. Hands-on and interview work sample measures were developed and administered to 1,491 enlisted personnel in eight Air Force specialties. Job-level analyses yielded moderate (46) to high (84) correlations but produced significant mean differences (six of eight specialties) between the two techniques. In addition, the patterns of relationships between each work sample test and a series of related performance, aptitude, and experience measures were found to be quite similar, and the magnitudes of these correlations were similar to those in studies reported previously. In contrast, task-level analyses yielded considerable variability in correlational values (rs ranged from .19 to .97) and mean differences (39 of 64 mean comparisons were significantly different). Results are discussed in terms of the usefulness of interview testing as a work sample measurement methodology for different personnel functions. C1 USAF,ARMSTRONG LAB,BROOKS AFB,TX 78235. RP HEDGE, JW (reprint author), PERSONNEL DECIS RES INST INC,43 MAIN ST SE,RIVERPLACE SUITE 405,MINNEAPOLIS,MN 55414, USA. NR 30 TC 24 Z9 24 U1 2 U2 3 PU AMER PSYCHOLOGICAL ASSOC PI WASHINGTON PA 750 FIRST ST NE, WASHINGTON, DC 20002-4242 SN 0021-9010 J9 J APPL PSYCHOL JI J. Appl. Psychol. PD AUG PY 1992 VL 77 IS 4 BP 453 EP 461 PG 9 WC Psychology, Applied; Management SC Psychology; Business & Economics GA JJ212 UT WOS:A1992JJ21200006 ER PT J AU BEIGHLEY, PS BROWN, GR THOMPSON, JW AF BEIGHLEY, PS BROWN, GR THOMPSON, JW TI DSM-III-R BRIEF REACTIVE PSYCHOSIS AMONG AIR-FORCE RECRUITS SO JOURNAL OF CLINICAL PSYCHIATRY LA English DT Article ID FOLLOW-UP; 3RD PSYCHOSIS; DEFINE AB Background: Clinical characteristics of patients diagnosed with brief reactive psychosis based on DSM-III-R criteria and the incidence of this disorder in a defined population have not been sufficiently studied. Some military recruits who are subjected to relatively uniform levels of stress in a monitored environment over a specified brief period develop transient, severe psychotic symptoms consistent with a diagnosis of brief reactive psychosis. Method: We retrospectively reviewed all cases of brief reactive psychosis that occurred among 139,360 Air Force recruits during 6-week basic training experiences over a 3-year period. Brief case descriptions, including clinical courses, are provided. Results: Six cases were found among 557 consecutive psychiatric admissions between January 1, 1988, and January 1, 1991 (annual incidence = 1.43 cases per 100,000 recruits). An apparent temporal relationship was found between the onset of the stressor (basic military training) and the development of psychosis. Paranoid symptomatology, including persecutory delusions, was present in all cases. Adjustment disorders were the most common diagnoses in patients admitted from die training environment (N = 464). Conclusion: Brief reactive psychosis is a rare discharge diagnosis in this large population of young Air Force recruits. Prospective studies are warranted to evaluate the usefulness of DSM-III-R criteria for this disorder and to determine the longitudinal course of patients who have received this diagnosis. C1 UNIV TEXAS,HLTH SCI CTR,DEPT PSYCHIAT,SAN ANTONIO,TX 78284. WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. RP BEIGHLEY, PS (reprint author), USAF,HOSP TINKER,MENTAL HLTH CLIN,TINKER AFB,OK 73145, USA. NR 29 TC 12 Z9 14 U1 1 U2 3 PU PHYSICIANS POSTGRADUATE PRESS PI MEMPHIS PA P O BOX 240008, MEMPHIS, TN 38124 SN 0160-6689 J9 J CLIN PSYCHIAT JI J. Clin. Psychiatry PD AUG PY 1992 VL 53 IS 8 BP 283 EP 288 PG 6 WC Psychology, Clinical; Psychiatry SC Psychology; Psychiatry GA JK443 UT WOS:A1992JK44300005 PM 1500405 ER PT J AU LEVINE, PH JAHAN, N MURARI, P MANAK, M JAFFE, ES AF LEVINE, PH JAHAN, N MURARI, P MANAK, M JAFFE, ES TI DETECTION OF HUMAN HERPESVIRUS-6 IN TISSUES INVOLVED BY SINUS HISTIOCYTOSIS WITH MASSIVE LYMPHADENOPATHY (ROSAI-DORFMAN DISEASE) SO JOURNAL OF INFECTIOUS DISEASES LA English DT Article ID EPSTEIN-BARR-VIRUS; CELL LEUKEMIA LYMPHOMA; REED-STERNBERG CELLS; HODGKINS-DISEASE; LYMPHOPROLIFERATIVE DISORDERS; EXANTHEM SUBITUM; VIRAL GENOMES; INFECTION; HHV-6; IDENTIFICATION AB After preliminary serologic data demonstrated elevated antibody titers to human herpesvirus (HHV) 6 in patients with sinus histiocytosis with massive lymphadenopathy (SHML) or Rosai-Dorfman disease, tissues were examined from 9 patients with classical SHML to search for evidence of HHV-6 infection. Involved tissues from 7 of the 9 patients had detectable HHV-6 by in situ hybridization: Tissue from 1 had detectable Epstein-Barr virus genome but no HHV-6 and tissue from another had no detectable HHV-6 or Epstein-Barr virus. These studies suggest that HHV-6 and, to a lesser extent, Epstein-Barr virus may be involved in the etiology of SHML. C1 BIOTECH RES LABS INC,ROCKVILLE,MD. USAF,INST PATHOL,WASHINGTON,DC 20330. RP LEVINE, PH (reprint author), NCI,BLDG EPN,RM 434,BETHESDA,MD 20892, USA. OI Manak, Mark /0000-0002-9217-9129 FU NIAID NIH HHS [AI-82502] NR 41 TC 151 Z9 160 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 AUG PY 1992 VL 166 IS 2 BP 291 EP 295 PG 5 WC Immunology; Infectious Diseases; Microbiology SC Immunology; Infectious Diseases; Microbiology GA JE578 UT WOS:A1992JE57800010 PM 1321861 ER PT J AU BARRACK, KS AF BARRACK, KS TI ALTERNATIVE RESTORATIVE APPROACH - A CLINICAL REPORT SO JOURNAL OF PROSTHETIC DENTISTRY LA English DT Article RP BARRACK, KS (reprint author), USAF,DENT CLIN CHARLESTON,DEPT PROSTHODONT,CHARLESTON AFB,SC 29404, USA. NR 4 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 0022-3913 J9 J PROSTHET DENT JI J. Prosthet. Dent. PD AUG PY 1992 VL 68 IS 2 BP 215 EP 216 DI 10.1016/0022-3913(92)90315-2 PG 2 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA JF662 UT WOS:A1992JF66200001 PM 1501161 ER PT J AU OATES, DE NGUYEN, PP DRESSELHAUS, G DRESSELHAUS, MS LAM, CW ALI, SM AF OATES, DE NGUYEN, PP DRESSELHAUS, G DRESSELHAUS, MS LAM, CW ALI, SM TI MEASUREMENTS AND MODELING OF LINEAR AND NONLINEAR EFFECTS IN STRIPLINES SO JOURNAL OF SUPERCONDUCTIVITY LA English DT Article DE SURFACE IMPEDANCE; THIN FILM PROPERTIES; STRIPLINE RESONATORS; MICROWAVE PROPERTIES; YBA2CU3O7-X ID HIGH-TC SUPERCONDUCTORS; YBA2CU3O7-X THIN-FILMS; SURFACE-RESISTANCE; CRITICAL FIELDS; TEMPERATURE; DEPENDENCE; ANISOTROPY; IMPEDANCE AB We present measurements of surface impedance Z(S) as a function of frequency, temperature, and rf magnetic field for high-quality epitaxial YBa2Cu3O7-x thin films using a stripline-resonator technique that measures the Q of the resonator vs. input power. The results have been modeled using Ginzburg-Landau theory at moderate fields, and the Bean critical state model at high fields. Good agreement has been obtained between the model and the measurements. We also discuss the current distributions in the stripline for both low power when Z(S) is linear and high power when Z(S) is nonlinear. C1 MIT,DEPT PHYS,CAMBRIDGE,MA 02139. USAF,ROME LAB,BEDFORD,MA 01731. MIT,FRANCIS BITTER NATL MAGNET LAB,CAMBRIDGE,MA 02139. MIT,DEPT ELECT ENGN & COMP SCI,CAMBRIDGE,MA 02139. MIT,DEPT PHYS,CAMBRIDGE,MA 02139. RP OATES, DE (reprint author), MIT,LINCOLN LAB,LEXINGTON,MA 02173, USA. NR 26 TC 63 Z9 63 U1 2 U2 4 PU PLENUM PUBL CORP PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 SN 0896-1107 J9 J SUPERCOND JI J. Supercond. PD AUG PY 1992 VL 5 IS 4 BP 361 EP 369 DI 10.1007/BF00618136 PG 9 WC Physics, Applied; Physics, Condensed Matter SC Physics GA JW931 UT WOS:A1992JW93100007 ER PT J AU SMITH, JB TAYLOR, TB ZONE, JJ AF SMITH, JB TAYLOR, TB ZONE, JJ TI THE SITE OF BLISTER FORMATION IN DERMATITIS-HERPETIFORMIS IS WITHIN THE LAMINA-LUCIDA SO JOURNAL OF THE AMERICAN ACADEMY OF DERMATOLOGY LA English DT Article ID DERMAL-EPIDERMAL JUNCTION; BASEMENT-MEMBRANE ZONE AB Background: Because the initial neutrophilic infiltrate in dermatitis herpetiformis is within the dermal papillae, most investigators have assumed the vesicles occur in this same area. This was supported by electron microscopy studies. In 1983 Klein et al. refuted this concept, suggesting that vesicle formation was within the lamina lucida above the lamina densa. Despite this study, current literature continues to state that blister formation is below the lamina densa. Objective: Our purpose was to determine the ultrastructural site of blister formation in early and late vesicles of dermatitis herpetiformis. Methods: We evaluated eight biopsy specimens from four patients by immunomapping with antibodies to bullous pemphigoid antigen, laminin, type IV collagen, and epidermolysis bullosa acquisita antigen. Results: In both early and late vesicles blister formation was found to be above the lamina densa in the lamina lucida. Conclusion: These findings are contrary to the commonly held concept that the blister in dermatitis herpetiformis is below the lamina densa and confirm the findings of Klein et al. that the site of blister formation in dermatitis herpetiformis is above the lamina densa within the lamina lucida. C1 UNIV UTAH,MED CTR,SCH MED,DEPT INTERNAL MED,DIV DERMATOL,50 N MED DR,SALT LAKE CITY,UT 84132. HILL HOSP,DEPT EMERGENCY,HILL AFB,UT. VET AFFAIRS MED CTR,DERMATOL SECT,SALT LAKE CITY,UT. FU NCRR NIH HHS [M01-RR-00064] NR 23 TC 10 Z9 11 U1 0 U2 1 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0190-9622 J9 J AM ACAD DERMATOL JI J. Am. Acad. Dermatol. PD AUG PY 1992 VL 27 IS 2 BP 209 EP 213 DI 10.1016/0190-9622(92)70172-C PN 1 PG 5 WC Dermatology SC Dermatology GA JG537 UT WOS:A1992JG53700009 PM 1430358 ER PT J AU PARROTT, T BASSIOUNY, I KRAMER, S RANSLEY, P BELMAN, AB EHRLICH, R RITCHEY, M BAUMANN, L HUSMANN, D KASS, E BROECKER, B BARTONE, F BARTHOLOMEW, T GILL, B DUCKETT, J SHORTLIFFE, L BAUER, SB RINK, R SCHERZ, H KOYLE, M RUSHTON, G MITCHELL, M KAPLAN, G HOULE, AM DEAN, W NGUYEN, D KHOURY, A HANNA, M MCLORIE, G SCHERZ, H AF PARROTT, T BASSIOUNY, I KRAMER, S RANSLEY, P BELMAN, AB EHRLICH, R RITCHEY, M BAUMANN, L HUSMANN, D KASS, E BROECKER, B BARTONE, F BARTHOLOMEW, T GILL, B DUCKETT, J SHORTLIFFE, L BAUER, SB RINK, R SCHERZ, H KOYLE, M RUSHTON, G MITCHELL, M KAPLAN, G HOULE, AM DEAN, W NGUYEN, D KHOURY, A HANNA, M MCLORIE, G SCHERZ, H TI OPERATIVE TECHNIQUE - DISCUSSION SO JOURNAL OF UROLOGY LA English DT Discussion C1 EMORY UNIV,EGLESTON CHILDRENS HOSP,ATLANTA,GA 30322. SCOTTISH RITE CHILDRENS MED CTR,ATLANTA,GA. AIN SHAMS UNIV,PEDIAT SURG UNIT,CAIRO,EGYPT. WALTER REED ARMY MED CTR,DEPT UROL,WASHINGTON,DC 20307. CHILDRENS HOSP,NATL MED CTR,DEPT PEDIAT UROL,WASHINGTON,DC 20010. MAYO CLIN & MAYO FDN,DEPT UROL,DIV NEPHROL & INTERNAL MED,ROCHESTER,MN 55905. MAYO CLIN & MAYO FDN,BIOSTAT SECT,ROCHESTER,MN 55905. MAYO CLIN,UROL SECT,SCOTTSDALE,AZ. UNIV PENN,CHILDRENS HOSP PHILADELPHIA,DIV UROL,PHILADELPHIA,PA 19104. CONNECT TISSUE RES INST,PHILADELPHIA,PA. WILFORD HALL USAF MED CTR,JOINT MIL MED COMMAND,DEPT UROL,LACKLAND AFB,TX 78236. WILFORD HALL USAF MED CTR,JOINT MIL MED COMMAND,CLIN INVEST DIRECTORATE,LACKLAND AFB,TX 78236. UNIV PENN,SCH MED,DIV PEDIAT UROL,PHILADELPHIA,PA 19104. UNIV PENN,SCH MED,DEPT SURG,PHILADELPHIA,PA 19104. UNIV PENN,SCH MED,DEPT UROL,PHILADELPHIA,PA 19104. KINDERSPITA,BASEL,SWITZERLAND. CHILDRENS HOSP PHILADELPHIA,PHILADELPHIA,PA. UNIV MED & DENT NEW JERSEY,SCH OSTEOPATH MED,DEPT PATHOL,CAMDEN,NJ. COLUMBIA PRESBYTERIAN MED CTR,BABIES HOSP,DIV PEDIAT UROL,NEW YORK,NY 10032. WILLIAM BEAUMONT HOSP,DEPT UROL,ROYAL OAK,MI 48072. STANFORD UNIV,MED CTR,SCH MED,DEPT UROL,STANFORD,CA 94305. UNIV CALIF SAN DIEGO,MED CTR,CTR MED & PHYSIOL CHEM,SAN DIEGO,CA 92103. UNIV CALIF SAN DIEGO,MED CTR,DIV UROL,SAN DIEGO,CA 92103. CHILDRENS HOSP,DEPT PEDIAT UROL,SAN DIEGO,CA. DUKE UNIV,S HOSP,MED CTR,DIV UROL,DURHAM,NC 27706. DUKE UNIV,MED CTR,DIV UROL,DURHAM,NC 27710. CHILDRENS HOSP,NATL MED CTR,WASHINGTON,DC 20010. WALTER REED ARMY MED CTR,DEPT UROL,WASHINGTON,DC 20307. RP PARROTT, T (reprint author), EMORY UNIV,SCH MED,DEPT SURG UROL,ATLANTA,GA 30322, USA. 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 0022-5347 J9 J UROLOGY JI J. Urol. PD AUG PY 1992 VL 148 IS 2 BP 711 EP 713 PN 2 PG 3 WC Urology & Nephrology SC Urology & Nephrology GA JF961 UT WOS:A1992JF96100065 ER PT J AU STCLAIR, SR HIXSON, CJ RITCHEY, ML AF STCLAIR, SR HIXSON, CJ RITCHEY, ML TI ENTEROCYSTOPLASTY AND REFLUX NEPHROPATHY IN THE CANINE MODEL SO JOURNAL OF UROLOGY LA English DT Article; Proceedings Paper CT 1991 ANNUAL MEETING OF THE SECTION OF UROLOGY OF THE AMERICAN ACADEMY OF PEDIATRICS CY OCT 26-31, 1991 CL NEW ORLEANS, LA SP AMER ACAD PEDIAT DE BLADDER; VESICOURETERAL REFLUX; NEPHROPATHY ID VESICOURETERAL REFLUX; DOGS; BLADDER; CONDUIT AB Correction of vesicoureteral reflux at enterocystoplasty is often recommended to prevent the development of reflux nephropathy. Children with enterocystoplasty who require intermittent self-catheterization invariably have asymptomatic bacteriuria. In patients with persistent vesicoureteral reflux after enterocystoplasty the risk of renal damage from this asymptomatic bacteriuria is unknown. Detubularized ileocystoplasty was performed in 17 dogs with either direct nontunneled reimplantation or unroofing of the intramural tunnel and incision of the ipsilateral hemitrigone to create vesicoureteral reflux. Fluoroscopic urodynamic studies were performed 1 month later and unilateral vesicoureteral reflux was present in 6 dogs. All animals had low intravesical pressure and excretory urograms were performed to exclude obstruction. The 6 dogs with reflux were euthanized 3 months postoperatively and the kidneys were examined for histological evidence of pyelonephritis. In 5 of 6 dogs bacterial bladder colonization and subsequent renal pelvic colonization developed on the side of the vesicoureteral reflux. All of these animals had histological evidence of pyelonephritis in the refluxing kidney, whereas only 1 of 6 nonrefluxing control kidneys had any evidence of pyelonephritis (p = 0.031). Our results suggest that vesicoureteral reflux in association with enterocystoplasty leads to chronic upper tract infection and pyelonephritis in a majority of animals, despite creation of a low pressure urinary reservoir. Correction of vesicoureteral reflux at enterocystoplasty should be considered to prevent upper tract damage. C1 WILFORD HALL USAF MED CTR,JOINT MIL MED COMMAND,CLIN INVEST DIRECTORATE,LACKLAND AFB,TX 78236. RP STCLAIR, SR (reprint author), WILFORD HALL USAF MED CTR,JOINT MIL MED COMMAND,DEPT UROL,LACKLAND AFB,TX 78236, USA. NR 26 TC 9 Z9 9 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 1992 VL 148 IS 2 BP 728 EP 732 PN 2 PG 5 WC Urology & Nephrology SC Urology & Nephrology GA JF961 UT WOS:A1992JF96100069 PM 1640556 ER PT J AU POLLOCK, D AF POLLOCK, D TI ARCHIVAL STORAGE OF BLOOD-DONOR RECORDS SO LABORATORY MEDICINE LA English DT Article AB Many blood bank records, such as donor history forms, must now be kept indefinitely due to the need to review the records in cases of possible transfusion-transmitted diseases. We have developed a microfilm storage system that allows us to archive documents on microfilm. A computer index of the film allows retrieval of donor records based on key information, such as donor name, social security number, or donor number The advantages of the microfilm/computer-index system are the rapidity of document retrieval and the savings in storage space. RP POLLOCK, D (reprint author), WILFORD HALL USAF MED CTR,SGHLCB,BLOOD BANK,LACKLAND AFB,TX 78236, 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 AUG PY 1992 VL 23 IS 8 BP 547 EP 550 PG 4 WC Medical Laboratory Technology SC Medical Laboratory Technology GA JE122 UT WOS:A1992JE12200007 ER PT J AU FUNDERBURG, JC AF FUNDERBURG, JC TI ENDOSCOPIC EXTRACTION OF AN ECTOPIC 3RD MOLAR SO MILITARY MEDICINE LA English DT Article AB An ectopic third molar within the maxillary antrum was found to be the etiology of recurring sinusitis. The fully erupted tooth was extracted endoscopically. RP FUNDERBURG, JC (reprint author), USAF,SC REG HOSP,DEPT SURG,OTOLARYNGOL SERV,EGLIN AFB,FL 32542, 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 AUG PY 1992 VL 157 IS 8 BP 431 EP 432 PG 2 WC Medicine, General & Internal SC General & Internal Medicine GA JJ502 UT WOS:A1992JJ50200021 PM 1528493 ER PT J AU DAS, GP DUDIS, DS AF DAS, GP DUDIS, DS TI (HYPER)POLARIZABILITIES IN INFINITE POLYMERS - THE SATURATION PROBLEM SO SYNTHETIC METALS LA English DT Article ID ORGANIC-MOLECULES; POLARIZABILITY; HYPERPOLARIZABILITIES; ABINITIO; 2ND AB A method is proposed for calculating the (hyper)polarizabilities of infinite polymeric chains using the information from the corresponding oligomeric calculations. Sample calculations are presented for trans-polyacetylene (t-PA) and the results compared to those obtained by SCF calculations on polyenes of increasing size and extrapolated to the asymptotic limit. Results are also presented for poly(p-phenylene). C1 WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45432. RP DAS, GP (reprint author), ADTECH SYST INC,1342 N FAIRFIELD RD,DAYTON,OH 45432, USA. NR 16 TC 1 Z9 1 U1 0 U2 0 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0379-6779 J9 SYNTHETIC MET JI Synth. Met. PD AUG 1 PY 1992 VL 49 IS 1-3 BP 211 EP 220 DI 10.1016/0379-6779(92)90092-W PG 10 WC Materials Science, Multidisciplinary; Physics, Condensed Matter; Polymer Science SC Materials Science; Physics; Polymer Science GA JQ213 UT WOS:A1992JQ21300025 ER PT J AU METZGER, GE AF METZGER, GE TI GAS TUNGSTEN ARC-WELDING OF A POWDER-METALLURGY ALUMINUM-ALLOY SO WELDING JOURNAL LA English DT Article DE GTAW; AL-10FE-5CE; PREWELD VACUUM HEAT; FILLER METAL; WELDING CURRENT; TENSILE STRENGTH; POWDER METALLURGY; ALUMINUM ALLOYS; POROSITY AB A thin sheet of the powder metallurgy aluminum alloy Al-10Fe-5Ce (wt-%) was fusion welded with the gas tungsten arc welding process. The effects of preweld vacuum heat treatment of the base metal, filler metal, and the type of welding current were investigated. The gross porosity of welds made with untreated base metal was virtually eliminated by the use of a combination of preweld vacuum heat treatment and a direct current electrode negative (DCEN) welding arc with helium shielding gas. The required heat treatment is estimated to be 20 h at 750-degrees-F (399-degrees-C), which results in a reduction in the base metal tensile strength from about 65 to about 60 ksi (448 to 414 MPa). However, the presence of brittle, closely spaced intermetallic compounds near the weld interface causes low ductility and low strength. The tensile elongation at room temperature of longitudinal welds was about 1%, and the tensile strength joint efficiency of transverse welds was 55% when tested at room temperature, and 81 % at a testing temperature of 600-degrees-F (316-degrees-C). RP METZGER, GE (reprint author), WRIGHT LAB,WRIGHT PATTERSON AFB,OH, USA. NR 10 TC 1 Z9 1 U1 0 U2 0 PU AMER WELDING SOC PI MIAMI PA PO BOX 351040, MIAMI, FL 33135 SN 0043-2296 J9 WELD J JI Weld. J. PD AUG PY 1992 VL 71 IS 8 BP S297 EP S304 PG 8 WC Metallurgy & Metallurgical Engineering SC Metallurgy & Metallurgical Engineering GA JF967 UT WOS:A1992JF96700014 ER PT J AU HABIGER, KW STEIN, C AF HABIGER, KW STEIN, C TI THICKNESS MEASUREMENTS OF THIN-FILMS - COMPARISON OF TECHNIQUES USING CHARACTERISTIC X-RAY-LINE RATIO TECHNIQUES SO THIN SOLID FILMS LA English DT Article AB In this research, two characteristic X-ray line ratio techniques are experimentally investigated. One technique uses the ratio of the characteristic L X-ray line to the characteristic Ka X-ray line of the substrate, The other technique uses the ratio between one characteristic X-ray line of the substrate and one characteristic X-ray line of the thin film overlay. Experimental measurements were taken for both techniques by bombarding a coated sample with electrons and measuring the ratio of the areas under the characteristic X-ray line peaks. The samples used in the experiment consisted of a copper substrate coated with aluminum and a molybdenum substrate coated with aluminum. The data are presented by plotting the characteristic X-ray line ratios vs. the thin film thickness from 400 to 7000 angstrom for 20, 25 and 30 keV electron bombardment. On the basis of these experiments, it was found that the ratio of the characteristic X-ray lines from thc substrate (L:K-alpha ratio) is not suitable for thin film measurements because of the complication caused by matrix enhancement effects. However, matrix enhancement effects are also partly responsible for producing a large ratio change (80%) over the range of 5000 angstrom of overlay coating for the ratio technique that uses an X-ray line from the substrate and an X-ray line from the thin film overlay. This ratio was independent of accelerating electron energy and inversely proportional to the thickness. C1 USAF,SYST COMMAND,PHILLIPS LAB,VTSI,KIRTLAND AFB,NM 87117. RP HABIGER, KW (reprint author), TITAN,DIV SPECTRON,POB 925,ALBUQUERQUE,NM 87119, USA. NR 10 TC 5 Z9 6 U1 0 U2 2 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0040-6090 J9 THIN SOLID FILMS JI Thin Solid Films PD JUL 30 PY 1992 VL 215 IS 1 BP 108 EP 114 DI 10.1016/0040-6090(92)90710-S PG 7 WC Materials Science, Multidisciplinary; Materials Science, Coatings & Films; Physics, Applied; Physics, Condensed Matter SC Materials Science; Physics GA JF603 UT WOS:A1992JF60300019 ER PT J AU SCHWERTNER, HA PATTERSON, WR CISSIK, JH WILSON, KW AF SCHWERTNER, HA PATTERSON, WR CISSIK, JH WILSON, KW TI NEW EXTRACTION PROCEDURE AND HIGH-PERFORMANCE LIQUID-CHROMATOGRAPHIC METHOD FOR ANALYZING POLYETHYLENE GLYCOL-400 IN URINE SO JOURNAL OF CHROMATOGRAPHY-BIOMEDICAL APPLICATIONS LA English DT Note ID INTESTINAL PERMEABILITY; PEG-400; ANIMALS AB We describe a new, highly efficient method for extracting polyethylene glycol-400 from urine and for its analysis by isocratic reversed-phase high-performance liquid chromatography. This method is an improvement over previously published methods in that it does not require the use of ion-exchange resins and lyophilization prior to extraction, nor does it require the separation and analysis of the individual polymers of polyethylene glycol. The procedure described in this report entails extraction with a salt-solvent combination of ammonium sulfate and dichloromethane and analysis by reversed-phase high-performance liquid chromatography. The lower limit of detection was approximately 0.25 g/l with a 2-ml urine sample. Analytical recoveries of polyethylene glycol-400 added to urine at 2.5 and 5.0 g/l averaged 97 and 96%, respectively (n = 10). Within- and between-day coefficients of variation were less than 5% at 2.5 and 5.0 g/l. Studies of various urine samples from patients receiving polyethylene glycol-400 revealed no interferences from other urine substances. C1 WILFORD HALL USAF MED CTR,DEPT GASTROENTEROL,LACKLAND AFB,TX 78236. RP SCHWERTNER, HA (reprint author), WILFORD HALL USAF MED CTR,CLIN INVEST DIRECTORATE,SGS,LACKLAND AFB,TX 78236, USA. NR 10 TC 9 Z9 9 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-4347 J9 J CHROMATOGR-BIOMED JI J. Chromatogr.-Biomed. Appl. PD JUL 24 PY 1992 VL 578 IS 2 BP 297 EP 301 DI 10.1016/0378-4347(92)80429-T PG 5 WC Chemistry, Analytical SC Chemistry GA JG271 UT WOS:A1992JG27100018 PM 1400810 ER PT J AU IKOSSIANASTASIOU, K JOHNSTONE, DK STUTZ, CE EVANS, KR EZIS, A AF IKOSSIANASTASIOU, K JOHNSTONE, DK STUTZ, CE EVANS, KR EZIS, A TI INTERFACE STATES IN REGROWN GAAS P-N-JUNCTIONS BY SELECTIVE MOLECULAR-BEAM EPITAXY SO APPLIED PHYSICS LETTERS LA English DT Article ID LEVEL TRANSIENT SPECTROSCOPY; INSULATOR-SEMICONDUCTOR; OHMIC CONTACTS; CAPACITANCE; BASE; BULK AB We report the first evaluation of interface states present in GaAs p-n junctions regrown on a SiO2 masked substrate by selective molecular beam epitaxy. A constant-capacitance deep-level transient spectroscopy (CC-DLTS) method is extended to the regrown p-n junction case, and a technique to distinguish the DLTS signal emerging from bulk and interface states is employed. The extracted interface state density is in good agreement with predictions based on the unified disorder-induced gap state model. C1 SOLID STATE ELECTR DIRECTORATE,WRIGHT LAB,WRIGHT PATTERSON AFB,DAYTON,OH 45433. UNIVERSAL ENERGY SYST INC,DAYTON,OH 45432. RP IKOSSIANASTASIOU, K (reprint author), LOUISIANA STATE UNIV,DEPT ELECT & COMP ENGN,SOLID STATE LAB,BATON ROUGE,LA 70803, USA. NR 21 TC 1 Z9 1 U1 2 U2 4 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 JUL 20 PY 1992 VL 61 IS 3 BP 297 EP 299 DI 10.1063/1.107917 PG 3 WC Physics, Applied SC Physics GA JE524 UT WOS:A1992JE52400019 ER PT J AU SOREF, RA AF SOREF, RA TI ELECTROOPTICAL AND NONLINEAR OPTICAL COEFFICIENTS OF ORDERED GROUP-IV SEMICONDUCTOR ALLOYS SO JOURNAL OF APPLIED PHYSICS LA English DT Article AB Miller's delta delta-14(2-omega) of 0.0172 m2/C is found for beta-SiC at 1.1-mu-m from the measured Pockels coefficient r41 [Appl. Phys. Lett. 59, 1938 (1991)]. Assuming delta is constant, we estimate that r41 for zincblende SiC, GeC, SiGe, SiSn, GeSn, and SnC is in the range 2.7 to 11.3 pm/V. For these binary materials, the optical second-harmonic coefficient d14(2-omega) is estimated to be 30 to 1160 pm/V. Similar coefficients are expected for the ordered alloys GeSiC, SnSiC, SiGeSn, SnGeC, and SiGeCSn. RP SOREF, RA (reprint author), USAF,ROME LAB,RL ERO,BEDFORD,MA 01731, USA. NR 15 TC 25 Z9 25 U1 0 U2 9 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 1992 VL 72 IS 2 BP 626 EP 630 DI 10.1063/1.351844 PG 5 WC Physics, Applied SC Physics GA JD971 UT WOS:A1992JD97100043 ER PT J AU ONGSTAD, AP LAWCONNELL, RI HENSHAW, TL AF ONGSTAD, AP LAWCONNELL, RI HENSHAW, TL TI PHOTODISSOCIATION DYNAMICS OF S4N4 AT 222 AND 248 NM SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID LASER-INDUCED FLUORESCENCE; ENERGY-TRANSFER; NS; STATES; B2-PI; SPECTROSCOPY; FLAMES AB Emission from several electronically excited states of NS is observed when the energetic molecule S4N4 is photolyzed with radiation from an excimer laser. Photolysis at 248 nm generates fluorescence from the B 2-PI-1/2,3/2, H 2-PI-1/2, G 2-SIGMA-, and I 2-SIGMA+ states of NS. NS(B 2-PI-1/2,3/2) and NS(C 2-SIGMA+) fluorescence is observed when the photolysis wavelength is changed to 222 nm. The NS(H) and NS(C) spectra are postulated to arise from a resonant interaction between the KrF and KrCl excimer photons, respectively, and vibrationally hot ground state NS. LIF excitation scans on the NS X 2-PI-1/2,3/2 --> B 2-PI-1/2,3/2 system confirm the production of rotationally and vibrationally excited NS(X) up to upsilon" = 4. A mechanism, based on the experimental data (i.e., spectral composition, laser fluence studies, excited state time histories), calculated heats of formation, and Gaussian molecular orbital calculations, is proposed to account for the observed emissions. For photolysis at 248 nm it is hypothesized that a two photon absorption promotes the ground singlet state of S4N4 to an upper repulsive singlet state, which rapidly dissociates (tau much less than 30 ns), producing an acyclic S3N3 fragment and vibrationally excited monomeric NS(X). The photofragments can interact further with the excimer radiation to produce NS(B) and NS(H), respectively. A similar mechanism is proposed to account for the presence of the NS(B) and NS(C) excited states for the 222 nm photolysis. C1 USAF ACAD,FRANK J SEILER RES LAB,COLORADO SPRINGS,CO 80840. NR 35 TC 8 Z9 8 U1 0 U2 2 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 JUL 15 PY 1992 VL 97 IS 2 BP 1053 EP 1064 DI 10.1063/1.463284 PG 12 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA JM253 UT WOS:A1992JM25300033 ER PT J AU HORNER, JL JAVIDI, B WANG, J AF HORNER, JL JAVIDI, B WANG, J TI ANALYSIS OF THE BINARY PHASE-ONLY FILTER SO OPTICS COMMUNICATIONS LA English DT Article ID PERFORMANCE AB The transform method is applied to the binary phase-only filter (BPOF) resulting in an infinite sum of harmonic terms. It clearly shows how the well-known correlation and convolution response of the BPOF arises. The effects of the various harmonic terms on the total correlation signal at the output plane are investigated. RP HORNER, JL (reprint author), USAF,ROME AIR DEV CTR,BEDFORD,MA 01731, USA. NR 11 TC 16 Z9 16 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 JUL 15 PY 1992 VL 91 IS 3-4 BP 189 EP 192 DI 10.1016/0030-4018(92)90436-U PG 4 WC Optics SC Optics GA JF398 UT WOS:A1992JF39800008 ER PT J AU ESENER, S HORNER, JL JOHNSON, KM AF ESENER, S HORNER, JL JOHNSON, KM TI SPATIAL LIGHT MODULATORS AND THEIR APPLICATIONS - INTRODUCTION BY THE GUEST EDITORS SO APPLIED OPTICS LA English DT Editorial Material AB The feature in this issue of Applied Optics includes a collection of papers originally presented at the 1990 Lake Tahoe topical meeting on Spatial Light modulators. These papers emphasize materials and devices for spatial light modulation, smart pixels, and applications. C1 USAF,ROME LABS,BEDFORD,MA 01731. UNIV COLORADO,DEPT ELECT & COMP ENGN,BOULDER,CO 80309. RP ESENER, S (reprint author), UNIV CALIF SAN DIEGO,DEPT ELECT & COMP ENGN,ROOM R-007,9500 GILMAN DR,LA JOLLA,CA 92093, USA. NR 0 TC 8 Z9 8 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 JUL 10 PY 1992 VL 31 IS 20 BP 3879 EP 3879 PG 1 WC Optics SC Optics GA JC656 UT WOS:A1992JC65600002 PM 20725363 ER PT J AU HAALAND, P TARGOVE, J AF HAALAND, P TARGOVE, J TI FLOWING AFTERGLOW SYNTHESIS OF POLYTHIOPHENE FILMS SO APPLIED PHYSICS LETTERS LA English DT Article ID THIN-FILMS AB Penning ionization of thiophene and 2,5-dichlorothiophene by metastable argon in a flowing afterglow leads to the deposition of dense, uniform polythiophene films. Homogeneous kinetics have been examined using quadrupole mass spectrometry. The films have been characterized by spectroscopic ellipsometry, optical absorption, Rutherford backscattering spectrometry, and scanning force microscopy. The polymer, which has a nonlinear optical susceptibility chi(3)=10(-11) esu at 602 nm, has been deposited on Si, quartz, and metal substrates. RP HAALAND, P (reprint author), USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433, USA. NR 14 TC 23 Z9 23 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 JUL 6 PY 1992 VL 61 IS 1 BP 34 EP 36 DI 10.1063/1.107659 PG 3 WC Physics, Applied SC Physics GA JB747 UT WOS:A1992JB74700012 ER PT J AU KEYSER, PT AF KEYSER, PT TI PERTURBATIVE FORCES ON AN ARTIFICIAL BINARY FOR MEASURING-G SO PHYSICS LETTERS A LA English DT Article ID GRAVITATIONAL CONSTANT; EQUIVALENCE PRINCIPLE; SPACE AB The proposal for an artificial binary, in an enclosure satellite in geosynchronous orbit, to measure Newton's constant G by the methods of satellite geodesy is reviewed. Several error sources and design difficulties may make more remote the possibility of an improvement in the uncertainty on G (currently about a few parts in 10(4)). C1 USAF,GEOPHYS LAB,BEDFORD,MA 01731. NR 11 TC 2 Z9 2 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9601 J9 PHYS LETT A JI Phys. Lett. A PD JUL 6 PY 1992 VL 167 IS 1 BP 29 EP 31 DI 10.1016/0375-9601(92)90621-R PG 3 WC Physics, Multidisciplinary SC Physics GA JE336 UT WOS:A1992JE33600006 ER PT J AU TEDESCHI, WJ CONNELL, JC MCKNIGHT, DS ALLAHDADI, F REINHARDT, A HUNT, RD HOGG, DM AF TEDESCHI, WJ CONNELL, JC MCKNIGHT, DS ALLAHDADI, F REINHARDT, A HUNT, RD HOGG, DM TI DETERMINING THE EFFECTS OF SPACE DEBRIS IMPACTS ON SPACECRAFT STRUCTURES SO ACTA ASTRONAUTICA LA English DT Article; Proceedings Paper CT 42ND CONGRESS OF THE INTERNATIONAL ASTRONAUTICAL FEDERATION CY OCT 05-11, 1991 CL MONTREAL, CANADA SP INT ASTRONAUT FEDERAT AB The collision hazard to space systems from trackable orbital debris has doubled over the last 15 years in some regions of low Earth orbit. Yet the hazard from nontrackable debris may be even more severe in some Earth orbits. Thousands of orbiting objects too small to be tracked reliably may damage or destroy space hardware via hypervelocity collision, resulting in mission degradation or termination and generated debris. An understanding of the modes by which a small impactor collides and interacts with a massive complex structure is required to: (1) accurately determine the present debris environment, (2) quantify the operational lifetime of satellites, and (3) predict the future environment. The Defense Nuclear Agency has initiated the DoD Spacecraft Breakup Modeling Program to improve the accuracy and usefulness of satellite breakup models, with an emphasis on collision-induced events. The breakup modeling approach fits into three broad categories: empirical, semianalytic, and complex. This model development effort is being conducted in parallel with an experimental HyperVelocity Impact (HVI) test program to produce accurate data required to develop and validate the breakup models. Current results from the breakup modeling effort are presented and discussed, along with data from the associated HVI impact test program. C1 KAMAN SCI CORP,ALEXANDRIA,VA 22303. USAF,PHILLIPS LAB,KIRTLAND AFB,NM 87117. USAF,WRIGHT LAB,EGLIN AFB,FL 32542. RP TEDESCHI, WJ (reprint author), DEF NUCL AGCY,ALEXANDRIA,VA 22310, USA. NR 0 TC 3 Z9 3 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0094-5765 J9 ACTA ASTRONAUT JI Acta Astronaut. PD JUL PY 1992 VL 26 IS 7 BP 501 EP 512 DI 10.1016/0094-5765(92)90121-X PG 12 WC Engineering, Aerospace SC Engineering GA JJ944 UT WOS:A1992JJ94400006 ER PT J AU DAO, P MCNUTT, R JONAS, FM SOLIZ, P YATES, KW AF DAO, P MCNUTT, R JONAS, FM SOLIZ, P YATES, KW TI QUANTIFYING THE ORBITAL DEBRIS ENVIRONMENT SO ACTA ASTRONAUTICA LA English DT Article; Proceedings Paper CT 42ND CONGRESS OF THE INTERNATIONAL ASTRONAUTICAL FEDERATION CY OCT 05-11, 1991 CL MONTREAL, CANADA SP INT ASTRONAUT FEDERAT AB The orbital debris environment is of increasing concern to users of space. Models describing this environment depend on accurate and precise measurements of debris for all sizes and altitudes. This paper presents the assessment of an environment model, developed by NASA, and the uncertainties of that model. The uncertainties are shown to be dominated by the lack of knowledge of the debris environment. A Phillips Laboratory (Geophysics Directorate) measurement program is described that will enhance man's understanding of the debris environment. It uses the 2.54 m telescope located at Wright Laboratory (Wright Patterson AFB, Ohio). C1 ORION INT TECHNOL INC,ALBUQUERQUE,NM. RP DAO, P (reprint author), USAF,SYST COMMAND,PHILLIPS LAB,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 0094-5765 J9 ACTA ASTRONAUT JI Acta Astronaut. PD JUL PY 1992 VL 26 IS 7 BP 513 EP 522 DI 10.1016/0094-5765(92)90122-Y PG 10 WC Engineering, Aerospace SC Engineering GA JJ944 UT WOS:A1992JJ94400007 ER PT J AU PALAZOTTO, A PERRY, R SANDHU, R AF PALAZOTTO, A PERRY, R SANDHU, R TI IMPACT RESPONSE OF GRAPHITE EPOXY CYLINDRICAL PANELS SO AIAA JOURNAL LA English DT Article AB Graphite/epoxy curved cylindrical panels were impacted in the center by an impact machine capable of measuring load during the test. Load, deflection, and strain as functions of time were measured for six symmetric lay-up configurations for impact energies of 0.5-4.5 ft-lb. Damage was produced in all panels for certain impact energies. The extent and location of damage was determined from C-scans and optical microscopy of panel cross sections. The cross sections indicated that both delamination and transverse cracking contribute to internal damage. An in-house nonlinear finite element code was used to predict the panel deflections and stresses. The analysis produced good results in predicting the [0/90]3s panel deflection, and indicated transverse failure stresses were present in the panel center region. The deflections indicated that the panel boundary was between simply supported and clamped conditions, with good agreement obtained for hinged support at each edge. C1 WRIGHT LAB,DIV STRUCT,WRIGHT PATTERSON AFB,OH 45433. RP PALAZOTTO, A (reprint author), USAF,DEPT AERONAUT & ASTRONAUT,WRIGHT PATTERSON AFB,OH 45433, USA. NR 4 TC 20 Z9 22 U1 1 U2 3 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 1992 VL 30 IS 7 BP 1827 EP 1832 DI 10.2514/3.11143 PG 6 WC Engineering, Aerospace SC Engineering GA JC206 UT WOS:A1992JC20600021 ER PT J AU ARRIAGA, MA BRACKMANN, DE AF ARRIAGA, MA BRACKMANN, DE TI FACIAL-NERVE REPAIR TECHNIQUES IN CEREBELLOPONTINE ANGLE TUMOR SURGERY SO AMERICAN JOURNAL OF OTOLOGY LA English DT Article ID ANASTOMOSIS AB This study reviewed the technique and outcome of facial nerve repair in cases of cerebellopontine angle (CPA) tumor that resulted in transection of the facial nerve. Between January 1982 and December 1989, the facial nerve was preserved in over 97.7 percent of 1110 cases of CPA tumor resection. Facial nerve repair was performed in 23 patients. The nerve repair was accomplished with either suture anastomosis or support with microfibrillar collagen. In the cases repaired with sutures, reanastomosis to a proximal facial nerve stump at the brain stem was performed with a single suture, while stabilizing the nerve with a fenestrated suction. Direct facial nerve neurorrhaphy or anastomosis with a greater auricular nerve interposition graft was successful in restoring tone and some degree of voluntary motion in 18 of the 21 patients with follow-up available (86%) and acceptable function (grade IV/VI or better) in 12 of 21 (57%). The degree of recovery of facial function was significantly better in patients without preoperative facial nerve symptoms and patients in whom the tumor did not arise from the facial nerve itself. We conclude that in cases of facial nerve transection in the CPA, good results are obtained by immediately reestablishing anatomic continuity of the nerve with direct reanastomosis or with a greater auricular nerve graft. C1 UNIV SO CALIF,SCH MED,HOUSE EAR CLIN,LOS ANGELES,CA 90033. WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. NR 8 TC 19 Z9 19 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 JUL PY 1992 VL 13 IS 4 BP 356 EP 359 PG 4 WC Otorhinolaryngology SC Otorhinolaryngology GA JC390 UT WOS:A1992JC39000014 PM 1415500 ER PT J AU SMITH, BA GRIFFIN, C AF SMITH, BA GRIFFIN, C TI KLIPPEL-FEIL SYNDROME SO ANNALS OF EMERGENCY MEDICINE LA English DT Article DE KLIPPEL-FEIL SYNDROME AB Klippel-Feil syndrome is characterized by congenital fusion of two or more cervical vertebrae and may be associated with other organ system anomalies, Although many congenital anomalies are of little clinical importance to the emergency physician, Klippel-Feil syndrome is associated with both spontaneous and progressive neurologic sequelae as well as a predisposition for serious neurologic injury after relatively minor neck trauma. Such patterns of skeletal abnormalities as an unstable fusion pattern, craniocervical anomalies, and associated spinal stenosis are associated with a higher risk of neurologic sequelae. We report the case of a patient with a previously undiagnosed type II Klippel-Feil syndrome who presented after neck trauma to illustrate how further diagnostic imaging modalities may be required to elucidate the presence or absence of acute injury. Key considerations in the emergency management of such patients include radiographic evaluation for hypermobile cervical segments, the anticipation of difficult tracheal intubation, and proper follow-up and referral because of the associated other organ system anomalies and progression of the skeletal pathology. RP SMITH, BA (reprint author), WILFORD HALL USAF MED CTR,SGHAE,DEPT EMERGENCY MED,LACKLAND AFB,TX 78236, USA. NR 0 TC 7 Z9 7 U1 0 U2 2 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 JUL PY 1992 VL 21 IS 7 BP 876 EP 879 DI 10.1016/S0196-0644(05)81038-8 PG 4 WC Emergency Medicine SC Emergency Medicine GA JB220 UT WOS:A1992JB22000020 PM 1610048 ER PT J AU HAIGLER, BE PETTIGREW, CA SPAIN, JC AF HAIGLER, BE PETTIGREW, CA SPAIN, JC TI BIODEGRADATION OF MIXTURES OF SUBSTITUTED BENZENES BY PSEUDOMONAS SP STRAIN-JS150 SO APPLIED AND ENVIRONMENTAL MICROBIOLOGY LA English DT Article ID CATECHOL 2,3-DIOXYGENASE; ORGANIC-COMPOUNDS; DEGRADATION; PUTIDA; METABOLISM; EXPRESSION; OXIDATION; CULTURE; ACID AB Pseudomonas sp. strain JS150 was isolated as a nonencapsulated variant of Pseudomonas sp. strain JS1 that contains the genes for the degradative pathways of a wide range of substituted aromatic compounds. Pseudomonas sp. strain JS150 grew on phenol, ethylbenzene, toluene, benzene, naphthalene, benzoate, p-hydroxybenzoate, salicylate, chlorobenzene, and several 1,4-dihalogenated benzenes. We designed experiments to determine the conditions required for induction of the individual pathways and to determine whether multiple substrates could be biodegraded simultaneously. Oxygen consumption studies with whole cells and enzyme assays with cell extracts showed that the enzymes of the meta, ortho, and modified ortho cleavage pathways can be induced in strain JS150. Strain JS150 contains a nonspecific toluene dioxygenase with a substrate range similar to that found in strains of Pseudomonas putida. The presence of the dioxygenase along with multiple pathways for metabolism of substituted catechols allows facile extension of the growth range by spontaneous mutation and degradation of mixtures of substituted benzenes and phenols. Chlorobenzene-grown cells of strain JS150 degraded mixtures of chlorobenzene, benzene, toluene, naphthalene, trichloroethylene, and 1,2- and 1,4-dichlorobenzenes in continuous culture. Under similar conditions, phenol-grown cells degraded a mixture of phenol, 2-chloro-, 3-chloro-, and 2,5-dichlorophenol and 2-methyl- and 3-methylphenol. These results indicate that induction of appropriate biodegradative pathways in strain JS150 permits the biodegradation of complex mixtures of aromatic compounds. C1 USAF,CIVIL ENGN SUPPORT AGCY,TYNDALL AFB,FL 32403. NR 48 TC 119 Z9 125 U1 0 U2 14 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 JUL PY 1992 VL 58 IS 7 BP 2237 EP 2244 PG 8 WC Biotechnology & Applied Microbiology; Microbiology SC Biotechnology & Applied Microbiology; Microbiology GA JC006 UT WOS:A1992JC00600021 PM 1637161 ER PT J AU SHINDO, ML COSTANTINO, PD FRIEDMAN, CD PELZER, HJ SISSON, GA BRESSLER, FJ AF SHINDO, ML COSTANTINO, PD FRIEDMAN, CD PELZER, HJ SISSON, GA BRESSLER, FJ TI THE PECTORALIS MAJOR MYOFASCIAL FLAP FOR INTRAORAL AND PHARYNGEAL RECONSTRUCTION SO ARCHIVES OF OTOLARYNGOLOGY-HEAD & NECK SURGERY LA English DT Article ID TEMPORALIS MUSCLE FLAP; MYOCUTANEOUS FLAPS; NECK RECONSTRUCTION; HEAD; COMPLICATIONS; SKIN AB The pectoralis myocutaneous flap has been widely used for reconstruction of oral cavity and pharyngeal defects. However, it has several disadvantages, such as chest distortion, hair growth at the reconstructed site, and excessive bulk, all of which can be avoided by the use of the pectoralis myofascial flap. Oral cavities and pharyngeal defects, ranging in size from 4 to 9 cm in largest dimension, in 26 patients were reconstructed with the pectoralis myofascial flap. All but three defects were successfully reconstructed. The surface of the flap was covered by squamous epithelium in 1 month. The flap remained healthy during and after radiotherapy. The pectoralis myofascial flap is ideal for soft-tissue coverage of small- to medium-size oral cavity and pharyngeal defects. Its major advantages over the pectoralis myocutaneous flap are decreased bulk and improved cosmesis. C1 YALE UNIV,SCH MED,DEPT OTOLARYNGOL HEAD & NECK SURG,NEW HAVEN,CT 06510. NORTHWESTERN UNIV,SCH MED,DEPT OTOLARYNGOL HEAD & NECK SURG,CHICAGO,IL 60611. UNIV TEXAS,HLTH SCI CTR,DEPT OTOLARYNGOL HEAD & NECK SURG,HOUSTON,TX 77225. UNIV SO CALIF,DEPT OTOLARYNGOL HEAD & NECK SURG,LOS ANGELES,CA 90033. LOYOLA UNIV,STRITCH SCH MED,DEPT OTOLARYNGOL HEAD & NECK SURG,MAYWOOD,IL 60153. WILFORD HALL USAF MED CTR,DEPT OTOLARYNGOL HEAD & NECK SURG,LACKLAND AFB,TX 78236. NR 15 TC 23 Z9 23 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 JUL PY 1992 VL 118 IS 7 BP 707 EP 711 PG 5 WC Otorhinolaryngology; Surgery SC Otorhinolaryngology; Surgery GA JC547 UT WOS:A1992JC54700006 PM 1627290 ER PT J AU PROVINES, WF RAHE, AJ BLOCK, MG PENA, T TREDICI, TJ AF PROVINES, WF RAHE, AJ BLOCK, MG PENA, T TREDICI, TJ TI YELLOW LENS EFFECTS UPON VISUAL ACQUISITION PERFORMANCE SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article AB Twenty subjects made a total of 400 threshold visual acquisitions of T-38 aircraft approaching from 9 miles out. Half of the acquisitions were made with the subjects wearing yellow ophthalmic filters, and the other half without filters. No overall statistically significant difference in acquisition performance due to the use of yellow filters was found. C1 USAF,SCH AEROSP MED,DIV CLIN SCI,OPHTHALMOL BRANCH,PHYS PHYSIOL OPT FUNCT,BROOKS AFB,TX 78235. NR 10 TC 8 Z9 8 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 1992 VL 63 IS 7 BP 561 EP 564 PG 4 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA JA489 UT WOS:A1992JA48900001 PM 1616429 ER PT J AU DENNIS, RJ MILLER, RE PETERSON, RD JACKSON, WG AF DENNIS, RJ MILLER, RE PETERSON, RD JACKSON, WG TI CONTACT-LENS WEAR WITH THE USAF PROTECTIVE INTEGRATED HOOD MASK CHEMICAL DEFENSE ENSEMBLE SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article ID CONTRAST AB The Protective integrated Hood/Mask (PIHM) chemical defense aircrew ensemble blows air from the mask's plenum across the visor at a rate of approximately 15 L/min in order to prevent fogging of the visor and to cool the aircrew member's face. This study was designed to determine the effect of the PIHM airflow on soft contact lens (SCL) dehydration, contact lens comfort, and corneal integrity. There were 26 subjects who participated in this study: 15 SCL wearers, 6 rigid gas-permeable (RGP) wearers, and 5 nonspectacle wearing controls. Contrast acuity with the 3 Regan charts, subjective comfort, and relative humidity (RH) and temperature readings under the PIHM mask were monitored every 0.5 h during 6-h laboratory rides. Slit-lamp examinations and SCL water content measurements with a hand-held Abbe refractometer were made before and after the rides. High RH under the mask may have accounted for the moderate SCL dehydration (8.3%), no decrease in contrast acuity for any group, and lack of corneal stress. Although all groups experienced some inferior, epithelial, punctate keratopathy, RGP wearers had the most significant. SCLs performed relatively well in the PIHM mask environment. Testing with other parameter designs is necessary before recommending RGPs with the PIHM system. RP DENNIS, RJ (reprint author), USAF,ARMSTRONG LAB,DIV CLIN SCI,AEROSP VIS SECT,AL AOCOP,BROOKS AFB,TX 78235, USA. NR 19 TC 3 Z9 3 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 1992 VL 63 IS 7 BP 565 EP 671 PG 107 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA JA489 UT WOS:A1992JA48900002 PM 1616430 ER PT J AU KENNEDY, RS FOWLKES, JE BERBAUM, KS LILIENTHAL, MG AF KENNEDY, RS FOWLKES, JE BERBAUM, KS LILIENTHAL, MG TI USE OF A MOTION SICKNESS HISTORY QUESTIONNAIRE FOR PREDICTION OF SIMULATOR SICKNESS SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article AB This research assessed the usefulness of the Motion History Questionnaire (MHQ) for the prediction of simulator sickness, a form of motion sickness experienced by pilots training in ground-based flight simulators. Four MHQ scoring keys were compared: (1) the original MHQ key which had been validated on a sample of U.S. Navy student pilots exposed to Coriolis forces, (2 and 3) two keys which had been validated on a sample of civilian college students exposed to simulated ship motions, and (4) a simulator sickness key empirically derived in the present research and cross-validated. Navy and Marine Corps aviators (N = 456) filled out the MHQ prior to their regularly scheduled flight simulator training and were divided into validation and cross-validation samples. All scoring keys were predictive of reported symptoms of sickness, but highest correlations were obtained with the empirically-derived simulator sickness (SS) key. It is suggested that the SS key be used for self-testing so that pilots may be made aware of their risk for developing simulator sickness. C1 ENZIAN TECHNOL INC,ORLANDO,FL. UNIV IOWA,IOWA CITY,IA 52242. USAF,SYST COMMAND HEADQUARTERS,WASHINGTON,DC 20330. RP KENNEDY, RS (reprint author), ESSEX CORP,1040 WOODCOCK RD,SUITE 227,ORLANDO,FL 32803, USA. NR 31 TC 40 Z9 44 U1 3 U2 11 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 1992 VL 63 IS 7 BP 588 EP 593 PG 6 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA JA489 UT WOS:A1992JA48900006 PM 1616434 ER PT J AU SCHIRMER, JU WORKMAN, WT AF SCHIRMER, JU WORKMAN, WT TI MENSTRUAL HISTORY IN ALTITUDE CHAMBER TRAINEES SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article ID DECOMPRESSION-SICKNESS AB Previous studies have determined a higher rate of altitude-induced decompression sickness (DCS) in women than in men. Women are reportedly at higher risk for developing DCS during menses. A study of menstrual history in women completing altitude chamber training without developing DCS has never been accomplished. The purpose of this study was to collect and analyze menstrual history in these women. Thirteen U.S. Air Force Aerospace Physiology Units participated in a USAF-approved survey for 1 year. After completing altitude chamber flights, data on age, day of menstrual cycle (DMC), birth control pill use (BCP), and mean durations of menstrual cycle and menses were collected. There were 508 responses analyzed. There was no differences between mean duration of menstrual cycle and menses in the Yes (Y) and No (N) BCP groups. Y and N BCP groups were equally distributed across the menstrual cycle. Women completing altitude chamber training without developing DCS appear to be evenly distributed across their menstrual cycle, with use of BCPs not affecting their susceptibility to DCS. C1 ARMSTRONG LAB,DIV HYPERBAR MED,BROOKS AFB,TX. NR 7 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 JUL PY 1992 VL 63 IS 7 BP 616 EP 618 PG 3 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA JA489 UT WOS:A1992JA48900011 PM 1616439 ER PT J AU COLVARD, M KUO, P CALEEL, R LABO, J SELF, R AF COLVARD, M KUO, P CALEEL, R LABO, J SELF, R TI LASER-SURGERY PROCEDURES IN THE OPERATIONAL KC-135E AVIATION ENVIRONMENT SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Note ID EXPANDABLE SURGICAL CHAMBER AB The operational aviation and space environments present a potential for surgical trauma to aircrew and passengers. Current wound care techniques for trauma in the aviation and space medicine environment focus on classical surgical management of wounds. Medical lasers used in these environments can provide rapid control of bleeding wounds, reduce aircraft environmental contamination from body fluids and secretions, and foster rapid triage of injured personnel. Self-contained and reusable medical lasers have the potential to reduce the material supply of medical kits in the aviation and space environment. A miniaturized carbon dioxide laser was used to establish protocols and procedures for use on operational military KC-135E aircraft. Laser surgery was performed to demonstrate laser efficacy and safety in flight. C1 OHARE ARFF,SAC CLIN,126TH USAF ANG,CHICAGO,IL. CHICAGO COLL OSTEOPATH MED,DEPT SURG,DOWNERS GROVE,IL. NATL GUARD BUR,WASHINGTON,DC. ARMSTRONG LAB,DIV DIRECTED ENERGY,BROOKS AFB,TX. LOYOLA UNIV,MED CTR,DEPT ORAL & MAXILLOFACIAL SURG,MAYWOOD,IL 60153. NR 15 TC 4 Z9 4 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 1992 VL 63 IS 7 BP 619 EP 623 PG 5 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA JA489 UT WOS:A1992JA48900012 PM 1616440 ER PT J AU RICH, FJ DENIG, WF AF RICH, FJ DENIG, WF TI THE MAJOR MAGNETIC STORM OF MARCH 13-14, 1989 AND ASSOCIATED IONOSPHERE EFFECTS SO CANADIAN JOURNAL OF PHYSICS LA English DT Article; Proceedings Paper CT SYMP ON RESPONSE OF THE IONOSPHERE AND THERMOSPHERE TO MAJOR MAGNETIC STORMS CY AUG 15, 1991 CL VIENNA, AUSTRIA SP INT ASSOC GEOMAGNETISM & AERON ID GEOMAGNETIC STORMS; POLAR RAIN; PRECIPITATION; PATTERNS AB The geomagnetic storm of March 1989 was the largest geomagnetic storm of the decade and one of the largest of the century. We review many of the "high-latitude" ionospheric observations that were made during this storm. Most of the data presented here comes from the polar-orbiting satellites of the Defense Meteorological Satellite Program (DMSP) series. A review of the DMSP data shows.that most of the high-latitude, top-side ionospheric disturbance occurred on March 13 and 14. The magnitudes of the particle energy flux (ergs cm-2) (1 erg = 10(-7) J) and Joule heating were not unusually large for a storm, but the area of the energy deposition, and thus the total energy deposition, was extremely large. At the peak of the storm (minimum in D(st) (disturbance with storm time) and midnight boundary indices) the auroral particle precipitation extended down to magnetic latitudes of 40.1-degrees or L = 1.71 while the polar edge of the auroral zone expanded poleward only slightly. The storm was also a period of intense, hemispherically symmetric polar rain fluxes. The auroral electric field was clearly observed down to magnetic latitude of 35-degrees. This is consistent with the auroral electrojet (AE) current density and the AE index having a saturation level beyond which the index will increase slowly or not at all as more energy is transferred from the solar wind to the magnetosphere, but the cross polar-cap potential during this storm shows no evidence of saturation. There are only two visible light images from DMSP available near the peak of the storm. These images and one UV image from the Dynamics Explorer (DE) satellite at approximately the same time show the distribution of the aurora just after the peak of the storm. Comparison of the DMSP particle data with the DE-1 UV image indicates that the bifurcation of the auroral luminosity in the UV image is probably an effect of the DE-1 UV instrument's sensitivity limits; the DMSP data show no evidence for bifurcation of the auroral zone. RP RICH, FJ (reprint author), USAF,PHILLIPS LAB,GEOPHYS DIRECTORATE,DIV SPACE PHYS,BEDFORD,MA 01731, USA. NR 28 TC 14 Z9 14 U1 0 U2 0 PU NATL RESEARCH COUNCIL CANADA PI OTTAWA PA RESEARCH JOURNALS, MONTREAL RD, OTTAWA ON K1A 0R6, CANADA SN 0008-4204 J9 CAN J PHYS JI Can. J. Phys. PD JUL PY 1992 VL 70 IS 7 BP 510 EP 525 PG 16 WC Physics, Multidisciplinary SC Physics GA JW980 UT WOS:A1992JW98000005 ER PT J AU WOLFE, WH MICHALEK, JE MINER, JC RAHE, AJ AF WOLFE, WH MICHALEK, JE MINER, JC RAHE, AJ TI THE AIR-FORCE HEALTH STUDY - AN EPIDEMIOLOGIC INVESTIGATION OF HEALTH-EFFECTS IN AIR-FORCE PERSONNEL FOLLOWING EXPOSURE TO HERBICIDES, REPRODUCTIVE OUTCOMES SO CHEMOSPHERE LA English DT Article; Proceedings Paper CT 11TH INTERNATIONAL SYMP ON CHLORINATED DIOXINS AND RELATED COMPOUNDS CY SEP 23-27, 1991 CL RESEARCH TRIANGLE PK, NC AB This report investigates the relationship between birth defects and reproductive outcomes versus paternal TCDD levels among children and conceptions of members of Operation Ranch Hand, the unit responsible for the aerial spraying of herbicides in Vietnam and a comparison group. At a baseline physical examination in 1982 and again in 1985 and 1987, participants were asked to report occurrences of birth defects, miscarriages, stillbirths, infant deaths and neonatal deaths of their children. The birth defect status and outcome of all conceptions (N = 10,843) fathered by participants were verified by medical record review. Of these, 8,099 resulted in live births and birth defect status verified for 8,090 (99.9%). During the same period, the Air Force collaborated with the Centers for Disease Control to assay blood of the 1987 physical examination participants for 2,3,7,8 TCDD. The final interpretation of these data is deferred, pending further analyses. C1 QUESTECH INC,SAN ANTONIO,TX. RP WOLFE, WH (reprint author), AFSC,DIV HUMAN SYST,ARMSTRONG LAB,DIV EPIDEMIOL RES,BROOKS AFB,TX, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0045-6535 J9 CHEMOSPHERE JI Chemosphere PD JUL PY 1992 VL 25 IS 1-2 BP 217 EP 218 DI 10.1016/0045-6535(92)90517-U PG 2 WC Environmental Sciences SC Environmental Sciences & Ecology GA JN851 UT WOS:A1992JN85100052 ER PT J AU WOLFE, MW SAAD, RM SPENCE, TH AF WOLFE, MW SAAD, RM SPENCE, TH TI HEMODYNAMIC-EFFECTS OF AMRINONE IN A CANINE MODEL OF MASSIVE PULMONARY-EMBOLISM SO CHEST LA English DT Article ID HEART; CARDIOPULMONARY; DOBUTAMINE; THERAPY; OUTPUT; LUNG; DOG AB Amrinone, an inotrope with vasodilating properties, is of potential use in managing the right ventricular failure and pulmonary vasoconstriction induced by massive pulmonary embolism (PE). Therefore, to determine the hemodynamic effects of amrinone in a canine model of massive PE, autologous blood clot was infused into ten dogs (eight treated and two control animals) in an amount sufficient to decrease mean systemic arterial pressure (MAP) by at least 25 percent. This resulted in an increase in mean pulmonary artery pressure (MPAP) from 13.4 +/- 3.7 mm Hg to 44.4 +/- 4.8 mm Hg (p < 0.01), a decrease in MAP from 122 +/- 9.5 mm Hg to 35.6 +/- 9.8 mm Hg (p < 0.01), and a decrease in cardiac output from 2.73 +/- 0.834 L/min to 1.22 +/- 0.61 L/min (p < 0.01). Amrinone was administered in an initial bolus of 0.75 mg/kg followed by an infusion of 7.5-mu-g/kg/min, which resulted in significant hemodynamic improvement in all subjects, with a fall in MPAP to 35.3 +/- 5.1 mm Hg (p < 0.01), an increase in MAP to 98.1 +/- 31.1 mm Hg (p < 0.01), and an increase in cardiac output to 2.01 +/- 0.7 L/min (not significant) at 5 min. Cardiac output continued to increase to 2.56 +/- 0.16 L/min (p < 0.01) at 35 min. We conclude that amrinone alleviated pulmonary hypertension, systemic hypotension, and low cardiac output in a canine model of massive PE. RP WOLFE, MW (reprint author), USAF,MED CTR KEESLER,DEPT MED SGHM,KEESLER AFB,MS 39534, USA. NR 22 TC 8 Z9 8 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 JUL PY 1992 VL 102 IS 1 BP 274 EP 278 DI 10.1378/chest.102.1.274 PG 5 WC Critical Care Medicine; Respiratory System SC General & Internal Medicine; Respiratory System GA JC254 UT WOS:A1992JC25400054 PM 1623767 ER PT J AU MALL, S KIM, RY AF MALL, S KIM, RY TI FAILURE MECHANISMS IN LAMINATES OF SILICON-CARBIDE CALCIUM-ALUMINOSILICATE CERAMIC COMPOSITE SO COMPOSITES LA English DT Article DE COMPOSITE MATERIALS; LAMINATES; MECHANICAL PROPERTIES; MATRIX CRACKING; STRESS STRAIN RELATIONSHIP; BRITTLE-MATRIX COMPOSITES; SILICON CARBIDE FIBERS; CAS MATRIX ID MATRIX COMPOSITES AB A systematic investigation was conducted of failure mechanisms and their quantitative effects on the overall mechanical behaviour in laminates of a fibre-reinforced ceramic-matrix composite (silicon carbide/calcium-aluminosilicate) under static tensile loading. Three laminates were investigated: quasi-isotropic, cross-ply and angle-ply. Matrix cracking initiated in all laminates well below the proportional limit of the stress/strain relationship. This cracking grew in a random manner with increasing load; however, no continuous crack was observed across the whole width of the specimen. The measured Young's modulus and Poisson's ratio agreed well with the corresponding values from classical laminated plate theory, but this was not the case for the first ply failure and ultimate strengths. C1 UNIV DAYTON,RES INST,DAYTON,OH 45469. RP MALL, S (reprint author), USAF,INST TECHNOL,DEPT AERONAUT & ASTRONAUT,WRIGHT PATTERSON AFB,OH 45433, USA. NR 11 TC 19 Z9 19 U1 0 U2 0 PU BUTTERWORTH-HEINEMANN LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB SN 0010-4361 J9 COMPOSITES JI Composites PD JUL PY 1992 VL 23 IS 4 BP 215 EP 222 DI 10.1016/0010-4361(92)90181-S PG 8 WC Materials Science, Composites SC Materials Science GA JA363 UT WOS:A1992JA36300002 ER PT J AU BLOOM, RW AF BLOOM, RW TI LEGITIMACY AND COMMITMENT IN THE MILITARY - WYATT,TC, GAL,R SO CONTEMPORARY PSYCHOLOGY LA English DT Book Review RP BLOOM, RW (reprint author), USAF,MED CTR 13,DEPT MENTAL HLTH,MANILA,PHILIPPINES. NR 1 TC 0 Z9 0 U1 1 U2 1 PU AMER PSYCHOLOGICAL ASSOC PI WASHINGTON PA 750 FIRST ST NE, WASHINGTON, DC 20002-4242 SN 0010-7549 J9 CONTEMP PSYCHOL JI Comtemp. Psychol. PD JUL PY 1992 VL 37 IS 7 BP 682 EP 683 PG 2 WC Psychology, Multidisciplinary SC Psychology GA JD527 UT WOS:A1992JD52700045 ER PT J AU SMITH, JL AYOUB, MM MCDANIEL, JW AF SMITH, JL AYOUB, MM MCDANIEL, JW TI MANUAL MATERIALS HANDLING CAPABILITIES IN NONSTANDARD POSTURES SO ERGONOMICS LA English DT Article DE MANUAL MATERIALS HANDLING; LIFTING CAPABILITY PERCENTILE DISTRIBUTIONS; NONSTANDARD POSTURES AB Research efforts to establish manual materials handling (MMH) capabilities of individuals and populations have been conducted for many years. Most of the previous efforts have explored 'standard postures', utilizing two-handed, symmetric, sagittal plane MMH using unrestricted postures. Recognizing that many industrial MMH activities do not utilize 'standard postures', recent research projects have explored psychophysically determined MMH capacities in a variety of non-standard postures. Among the non-standard postures examined were: twisting while lifting or lowering, lifting and lowering from lying, sitting, kneeling, and squatting positions, and carrying loads under conditions of constricted ceiling heights. This paper presents the results of a series of previous research efforts at Texas Tech University. The results are presented in the form of population capabilities of both males and females for 99 MMH tasks using 'non-standard postures'. The data tables contain means and standard deviations of the data, as well as percentile distributions for the subject populations. Sample sizes for the experimental populations ranged from 45 to 50 subjects of each sex in the first three experiments to 20 subjects of each sex in the fourth set of experiments. C1 USAF,ARMSTRONG LABS,HEG,WRIGHT PATTERSON AFB,OH 45433. RP SMITH, JL (reprint author), TEXAS TECH UNIV,DEPT IND ENGN,LUBBOCK,TX 79409, USA. NR 8 TC 9 Z9 9 U1 2 U2 4 PU TAYLOR & FRANCIS LTD PI LONDON PA ONE GUNDPOWDER SQUARE, LONDON, ENGLAND EC4A 3DE SN 0014-0139 J9 ERGONOMICS JI Ergonomics PD JUL-AUG PY 1992 VL 35 IS 7-8 BP 807 EP 831 DI 10.1080/00140139208967364 PG 25 WC Engineering, Industrial; Ergonomics; Psychology, Applied; Psychology SC Engineering; Psychology GA JC238 UT WOS:A1992JC23800009 PM 1633790 ER PT J AU MCCARTHY, KF HALE, ML CRAW, PD AF MCCARTHY, KF HALE, ML CRAW, PD TI SIZE OF THE RAT HEMATOPOIETIC LONG-TERM REPOPULATING CELL-POPULATION SO EXPERIMENTAL HEMATOLOGY LA English DT Meeting Abstract C1 USAF,RADIOBIOL RES INST,BETHESDA,MD. NR 0 TC 0 Z9 0 U1 0 U2 0 PU CARDEN JENNINGS PUBL CO LTD PI CHARLOTTESVILLE PA BLAKE CTR, STE 200, 1224 W MAIN ST, CHARLOTTESVILLE, VA 22903 SN 0301-472X J9 EXP HEMATOL JI Exp. Hematol. PD JUL PY 1992 VL 20 IS 6 BP 750 EP 750 PG 1 WC Hematology; Medicine, Research & Experimental SC Hematology; Research & Experimental Medicine GA JA734 UT WOS:A1992JA73400176 ER PT J AU CHAN, Y AF CHAN, Y TI URBAN SYSTEMS - CONTEMPORARY APPROACHES TO MODELING - BERTUGLIA,C,S, LEONARDI,G, OCCELLI,S, RABINO,GA, TADEI,R, WILSON,AG SO GEOGRAPHICAL ANALYSIS LA English DT Book Review RP CHAN, Y (reprint author), USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433, USA. NR 4 TC 1 Z9 1 U1 0 U2 0 PU OHIO STATE UNIV PRESS PI COLUMBUS PA 1050 CARMACK RD, COLUMBUS, OH 43210 SN 0016-7363 J9 GEOGR ANAL JI Geogr. Anal. PD JUL PY 1992 VL 24 IS 3 BP 281 EP 282 PG 2 WC Geography SC Geography GA JF934 UT WOS:A1992JF93400007 ER PT J AU WENIG, BM AF WENIG, BM TI NEUROENDOCRINE TUMORS OF THE LARYNX SO HEAD AND NECK-JOURNAL FOR THE SCIENCES AND SPECIALTIES OF THE HEAD AND NECK LA English DT Letter ID NEURO-ENDOCRINE CARCINOMAS; MONOCLONAL-ANTIBODY RP WENIG, BM (reprint author), USAF,INST PATHOL,DEPT OTOLARYNG ENDOCRINE PATHOL,WASHINGTON,DC 20330, USA. NR 8 TC 6 Z9 6 U1 0 U2 0 PU JOHN WILEY & SONS INC PI NEW YORK PA 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 1043-3074 J9 HEAD NECK-J SCI SPEC JI Head Neck-J. Sci. Spec. Head Neck PD JUL-AUG PY 1992 VL 14 IS 4 BP 332 EP 333 DI 10.1002/hed.2880140415 PG 2 WC Otorhinolaryngology; Surgery SC Otorhinolaryngology; Surgery GA HY213 UT WOS:A1992HY21300014 PM 1517086 ER PT J AU MARLIN, JE KILLPACK, MO AF MARLIN, JE KILLPACK, MO TI NITROIMIDAZOLONES - SYNTHESIS OF DEAZA ANALOGS OF 3-NITRO-1,2,4-TRIAZOL-5-ONE SO HETEROCYCLES LA English DT Article ID 2-SUBSTITUTED IMIDAZOLES; DINITROIMIDAZOLES; 4-NITROIMIDAZOLES; 5-NITROIMIDAZOLES; DECOMPOSITION; SPECTROMETRY; DERIVATIVES; SEM AB Analogues of 3-nitro- 1,2,4-triazol-5-one (NTO) have been synthesized. The strategy revolves around a new method for the synthesis of imidazolones, namely the addition-elimination reaction of the sodium salt of trimethylsilylethanol with a trimethylsilylethoxymethyl (SEM)-protected dinitroimidazole followed by the acid-catalyzed conversion to the desired nitroimidazole (5). The N-methyl derivatives of 5 were prepared in a similar manner starting from the N-methyldinitroimidazoles. C1 USAF ACAD,DEPT CHEM,COLORADO SPRINGS,CO 80840. RP MARLIN, JE (reprint author), USAF ACAD,FRANK J SEILER RES LAB,COLORADO SPRINGS,CO 80840, USA. NR 24 TC 7 Z9 7 U1 1 U2 2 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0385-5414 J9 HETEROCYCLES JI Heterocycles PD JUL 1 PY 1992 VL 34 IS 7 BP 1385 EP 1393 PG 9 WC Chemistry, Organic SC Chemistry GA JH748 UT WOS:A1992JH74800015 ER PT J AU MAYBECK, PS SCHORE, MR AF MAYBECK, PS SCHORE, MR TI REDUCED-ORDER MULTIPLE MODEL ADAPTIVE CONTROLLER FOR FLEXIBLE SPACE STRUCTURE SO IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS LA English DT Article ID TRACKING; FILTER AB The robustness of a moving-bank multiple model adaptive estimator/controller to order reduction in the controller design model is examined. It is shown that the adaptive mechanism and bank-moving logic are not confounded by the effects of unmodeled higher order modes of a large flexible spacestructure. Control characteristics are achieved that are essentially equivalent to those of an artificially informed benchmark controller. RP MAYBECK, PS (reprint author), USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,WRIGHT PATTERSON AFB,OH 45433, USA. NR 34 TC 6 Z9 6 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 0018-9251 J9 IEEE T AERO ELEC SYS JI IEEE Trans. Aerosp. Electron. Syst. PD JUL PY 1992 VL 28 IS 3 BP 756 EP 767 DI 10.1109/7.256296 PG 12 WC Engineering, Aerospace; Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA JM710 UT WOS:A1992JM71000013 ER PT J AU MORROW, RK LEHNERT, JS AF MORROW, RK LEHNERT, JS TI PACKET THROUGHPUT IN SLOTTED ALOHA DS/SSMA RADIO SYSTEMS WITH RANDOM SIGNATURE SEQUENCES SO IEEE TRANSACTIONS ON COMMUNICATIONS LA English DT Article ID ERROR PROBABILITIES; PERFORMANCE AB Packet throughput figures are obtained for DS/SSMA slotted ALOHA radio systems where all users employ random signature sequences from bit-to-bit within all transmitted packets. These calculations use an improved Gaussian approximation technique which gives accurate bit error probabilities and also incorporates the effect of bit-to-bit error dependence within each packet in the multiple-access interference environment. Numerical results are given for packets which employ varying amounts of block error control, and a comparison is made with results obtained by other methods which ignore the effects of bit-to-bit error dependence and/or employ less-accurate Gaussian approximations to the probability of data bit error. Maximum throughput per unit bandwidth figures are calculated which compare favorably to similar figures for narrow-band signaling techniques. C1 PURDUE UNIV,SCH ELECT ENGN,DEPT ELECT ENGN,W LAFAYETTE,IN 47907. RP MORROW, RK (reprint author), USAF ACAD,DEPT AIR FORCE,COLORADO SPRINGS,CO 80840, USA. NR 10 TC 123 Z9 126 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 0090-6778 J9 IEEE T COMMUN JI IEEE Trans. Commun. PD JUL PY 1992 VL 40 IS 7 BP 1223 EP 1230 DI 10.1109/26.153367 PG 8 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA JJ660 UT WOS:A1992JJ66000013 ER PT J AU WU, RLC RAI, AK GARSCADDEN, A KEE, P DESAI, HD MIYOSHI, K AF WU, RLC RAI, AK GARSCADDEN, A KEE, P DESAI, HD MIYOSHI, K TI SYNTHESIS AND CHARACTERIZATION OF FINE-GRAIN DIAMOND FILMS SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID CHEMICAL-VAPOR-DEPOSITION; GROWTH AB A fine grain diamond film has been developed by microwave plasma assisted chemical vapor deposition. Various analytical techniques, including Rutherford backscattering, proton recoil analysis, Raman spectroscopy, and X-ray diffraction, were utilized to characterize the diamond films. The grain size of the film was determined from bright and dark field electron micrographs, and found to be 200-1000 angstrom. The films exhibited good optical transmission between 2.5 and 10-mu-m, with a calculated absorption coefficient of 490 cm-1. The friction coefficients of this film were found to be 0.035 and 0.030 at dry nitrogen and humid air environments, respectively, and the films had low wear rates. C1 WRIGHT LAB, WRIGHT PATTERSON AFB, OH 45433 USA. CVD INC, WOBURN, MA 01801 USA. NASA, LEWIS RES CTR, CLEVELAND, OH 44135 USA. RP WU, RLC (reprint author), UES INC, 4401 DAYTON XENIA RD, DAYTON, OH 45432 USA. NR 16 TC 42 Z9 43 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD JUL 1 PY 1992 VL 72 IS 1 BP 110 EP 116 DI 10.1063/1.352167 PG 7 WC Physics, Applied SC Physics GA JB347 UT WOS:A1992JB34700019 ER PT J AU MOLLERSTROM, WW PATCHNER, MA MILNER, JS AF MOLLERSTROM, WW PATCHNER, MA MILNER, JS TI FAMILY FUNCTIONING AND CHILD-ABUSE POTENTIAL SO JOURNAL OF CLINICAL PSYCHOLOGY LA English DT Article ID INVENTORY; PREDICTION; VALIDITY; RISK; MALTREATMENT; EXPLANATION AB Family conflict and the lack of family cohesion are believed to set a foundation for coercive interactions that increase the likelihood of child abuse. The present study investigated the relationship between the family social environment (Family Environment Scale and Index of Marital Satisfaction) and physical child abuse potential (Child Abuse Potential Inventory) in maltreating (n = 376) and comparison (n = 148) parents. As expected, the strongest positive relationship was between family conflict and abuse potential. The strongest inverse relationships were between family cohesion, family expressiveness, marital satisfaction, and abuse scores, which indicates that the lack of positive interactional patterns is related to abuse potential. However, regression analysis revealed that family interactional patterns did not account for the majority of variance in abuse potential. C1 NO ILLINOIS UNIV,DEPT PSYCHOL,FAMILY VIOLENCE RES PROGRAM,DE KALB,IL 60115. USAF,WASHINGTON,DC 20330. W VIRGINIA UNIV,MORGANTOWN,WV 26506. NR 57 TC 24 Z9 24 U1 0 U2 0 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 JUL PY 1992 VL 48 IS 4 BP 445 EP 454 DI 10.1002/1097-4679(199207)48:4<445::AID-JCLP2270480404>3.0.CO;2-2 PG 10 WC Psychology, Clinical SC Psychology GA JE424 UT WOS:A1992JE42400003 PM 1517438 ER PT J AU MANN, RW SHIELDS, ED AF MANN, RW SHIELDS, ED TI CAVITATION DEFECTS ON THE LINGUAL RAMUS - A FURTHER EXPRESSION OF STAFNE DEFECT SO JOURNAL OF CRANIOFACIAL GENETICS AND DEVELOPMENTAL BIOLOGY LA English DT Article DE IDIOPATHIC BONE CAVITY; STAFNE DEFECT; MANDIBLE ID MANDIBULAR BONE DEPRESSION AB Seven archaeological examples of 6,700 mandibles examined were found to have developmental cortical defects on the ramus. The defects, unusual in their position, were grossly and radiographically similar to developmental bone cavities (Stafne's) located in the sublingual region. Of the seven ramus defects, all of which were in adult males, six were in Alaskan Eskimos from Kodiak Island (N = 5) and Nelson Island (N = 1), and one was in a native American from Arkansas. Only five adult males from Finland have been reported with similar defects. A statistical examination of the metrics defining mandibular cavitation defects, along with prevalence data, suggest that the seemingly rare findings of ramus defects are an extreme manifestation of the continuum of severity of the Stafne's defect. Bilateral Stafne's defects also represent a severe manifestation. C1 SMITHSONIAN INST,DEPT ANTHROPOL,WASHINGTON,DC 20560. MCGILL UNIV,DEPT ORAL BIOL,MONTREAL H3A 2T5,QUEBEC,CANADA. MCGILL UNIV,CTR HUMAN GENET,MONTREAL H3A 2T5,QUEBEC,CANADA. RP MANN, RW (reprint author), USA,CENT IDENTIFICAT LAB,FT KAMEHAMEHA BLDG 45,HICKAM AFB,HI 96853, USA. NR 12 TC 12 Z9 12 U1 1 U2 1 PU MUNKSGAARD INT PUBL LTD PI COPENHAGEN PA 35 NORRE SOGADE, PO BOX 2148, DK-1016 COPENHAGEN, DENMARK SN 0270-4145 J9 J CRAN GENET DEV BIO JI J. Craniofac. Genet. Dev. Biol. PD JUL-SEP PY 1992 VL 12 IS 3 BP 167 EP 173 PG 7 WC Anatomy & Morphology; Developmental Biology; Genetics & Heredity SC Anatomy & Morphology; Developmental Biology; Genetics & Heredity GA JF943 UT WOS:A1992JF94300006 PM 1517396 ER PT J AU FREDERICKSON, AR KARAKASHIAN, AS AF FREDERICKSON, AR KARAKASHIAN, AS TI RECOMBINATION-INDUCED RANDOM-WALK DIFFUSION OF INTERSTITIAL CARBON IN SILICON SO JOURNAL OF ELECTRONIC MATERIALS LA English DT Article; Proceedings Paper CT 3RD WORKSHOP ON RADIATION-INDUCED AND/OR PROCESS-RELATED ELECTRICALLY ACTIVE DEFECTS IN SEMICONDUCTOR-INSULATOR SYSTEMS CY SEP 10-13, 1991 CL RESEARCH TRIANGLE PARK, NC DE DIFFUSION; RECOMBINATION; SILICON; INTERSTITIAL-CARBON; RANDOM-WALK; DLTS ID DEFECT REACTIONS; SEMICONDUCTORS; IDENTIFICATION; ENHANCEMENT; DEPENDENCE; DAMAGE; GAAS AB Recombination events at interstitial carbon atoms in silicon cause the carbon to step to adjacent interstitial positions. DLTS in p-type silicon is used to measure the random walk from interstitial carbon to interstitial carbon-oxygen centers. Electron capture at the interstitial carbon defect causes the carbon to step with a frequency of once per 16 capture events. Using 100 keV electron irradiations to produce electron-hole recombination events, we measure: the step frequency, electron capture cross section, and the mean time between electron captures at the interstitial carbon defect. Measurement of athermal diffusion in the dark indicates that the time between recombination events at interstitial carbon is 0.92 x 10(11) seconds if the electron density is 1 m-3. Interstitial carbon moves rapidly at low temperature by this random walk in p-type silicon. C1 UNIV LOWELL,DEPT PHYS & APPL PHYS,LOWELL,MA 01854. RP FREDERICKSON, AR (reprint author), USAF,DIV SPACE PHYS,PHILLIPS LAB,BEDFORD,MA 01731, USA. NR 33 TC 5 Z9 5 U1 0 U2 1 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 0361-5235 J9 J ELECTRON MATER JI J. Electron. Mater. PD JUL PY 1992 VL 21 IS 7 BP 745 EP 752 DI 10.1007/BF02655605 PG 8 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary; Physics, Applied SC Engineering; Materials Science; Physics GA JE292 UT WOS:A1992JE29200013 ER PT J AU ALFANO, S AF ALFANO, S TI 2 VARIATIONS OF CERTAINTY CONTROL SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS LA English DT Note RP ALFANO, S (reprint author), USAF ACAD,DEPT ASTRONAUT,COLORADO SPRINGS,CO 80840, USA. NR 5 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 0731-5090 J9 J GUID CONTROL DYNAM JI J. Guid. Control Dyn. PD JUL-AUG PY 1992 VL 15 IS 4 BP 1040 EP 1043 DI 10.2514/3.20943 PG 4 WC Engineering, Aerospace; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA JE878 UT WOS:A1992JE87800033 ER PT J AU WALSH, TJ LEE, JW MELCHER, GP NAVARRO, E BACHER, J CALLENDER, D REED, KD WU, T LOPEZBERESTEIN, G PIZZO, PA AF WALSH, TJ LEE, JW MELCHER, GP NAVARRO, E BACHER, J CALLENDER, D REED, KD WU, T LOPEZBERESTEIN, G PIZZO, PA TI EXPERIMENTAL TRICHOSPORON INFECTION IN PERSISTENTLY GRANULOCYTOPENIC RABBITS - IMPLICATIONS FOR PATHOGENESIS, DIAGNOSIS, AND TREATMENT OF AN EMERGING OPPORTUNISTIC MYCOSIS SO JOURNAL OF INFECTIOUS DISEASES LA English DT Article ID LATEX AGGLUTINATION-TEST; CANDIDA-ALBICANS; CRYPTOCOCCAL ANTIGEN; BEIGELII INFECTION; PATIENT; KETOCONAZOLE; MICONAZOLE; CUTANEUM; INVITRO; HOST AB Disseminated Trichosporon infection, an uncommon but emerging opportunistic mycosis due to Trichosporon beigelii, is frequently difficult to diagnose, refractory to treatment, and associated with a high attributable mortality. Models of disseminated and gastrointestinal Trichosporon infection were developed in persistently granulocytopenic rabbits. The patterns of infection resembled those of clinical disease, including cutaneous lesions, chorioretinitis, renal infection, pulmonary infection, and antigenemia cross-reactive with cryptococcal capsular polysaccharide. Antigenemia, an early manifestation of disseminated Trichosporon infection, originated in vivo from a fibrillar extracellular matrix. Trichosporon organisms disseminated from the gastrointestinal tract to visceral tissue in colonized immunosuppressed rabbits, whereas there was no dissemination from the gastrointestinal tract of otherwise normal rabbits. The antifungal triazoles, fluconazole and SCH 39304, were most active; maximum tolerated doses of amphotericin B and liposomal amphotericin B were ineffective. Trichosporon antigenemia declined in response to antifungal therapy. These findings contribute to improved understanding of the pathogenesis, diagnosis, and treatment of disseminated Trichosporon infection. C1 NIH,NATL CTR RES RESOURCES,SURG & RADIOL UNIT,BETHESDA,MD 20892. NIH,WARREN GRANT MAGNUSON CLIN CTR,CLIN MICROBIOL LAB,BETHESDA,MD 20892. WILFORD HALL USAF MED CTR,INFECT DIS SERV,LACKLAND AFB,TX 78236. WILFORD HALL USAF MED CTR,DEPT PATHOL,LACKLAND AFB,TX 78236. UNIV TEXAS,MD ANDERSON HOSP & TUMOR INST,DIV MED,IMMUNOL & DRUG CARRIERS SECT,HOUSTON,TX 77030. RP WALSH, TJ (reprint author), NCI,INFECT DIS SECT,PEDIAT BRANCH,BLDG 10,RM 13N-240,BETHESDA,MD 20892, USA. NR 36 TC 75 Z9 78 U1 0 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 JUL PY 1992 VL 166 IS 1 BP 121 EP 133 PG 13 WC Immunology; Infectious Diseases; Microbiology SC Immunology; Infectious Diseases; Microbiology GA HZ746 UT WOS:A1992HZ74600018 PM 1535092 ER PT J AU SARKAR, AK MAARTENSE, I PETERSON, TL AF SARKAR, AK MAARTENSE, I PETERSON, TL TI LIMIT OF SUPERCONDUCTIVITY IN SILVER SUPERCONDUCTOR METAL-MATRIX COMPOSITES PREPARED WITH BI-PB-SR-CA-CU-O CERAMIC POWDERS SO JOURNAL OF MATERIALS RESEARCH LA English DT Article ID AG; TEMPERATURE; SYSTEM; PHASES AB Superconducting composite samples were prepared by sintering a mixture of metallic silver and Bi(Pb)-Sr-Ca-Cu-O powder in air. For Ag contents between 0 and approximately 15 vol. %, the bulk critical temperature was depressed as much as 40 K, and the relative proportion of the 2223 phase with respect to the 2212 phase was decreased, compared to the pure sample. However, as the Ag content was increased to between 19 and 70 vol. %, critical temperatures above 100 K were measured by transport and ac susceptibility techniques, and the relative proportions of the phases were restored to that of the pure sample. The limit of bulk superconductivity was reached at 73 vol. % Ag where the bulk critical temperature was approximately 85 K. For higher Ag contents bulk superconductivity was not observed. Our results also show that sintering in air of silver-clad tapes containing Bi(Pb)-Sr-Ca-Cu-O powder, either by itself or with silver powder, need not be detrimental to the final superconductive properties. C1 MLPO,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 19 TC 13 Z9 13 U1 0 U2 1 PU MATERIALS RESEARCH SOCIETY PI PITTSBURGH PA 9800 MC KNIGHT ROAD SUITE 327, PITTSBURGH, PA 15237 SN 0884-2914 J9 J MATER RES JI J. Mater. Res. PD JUL PY 1992 VL 7 IS 7 BP 1672 EP 1678 DI 10.1557/JMR.1992.1672 PG 7 WC Materials Science, Multidisciplinary SC Materials Science GA JD171 UT WOS:A1992JD17100013 ER PT J AU HATSELL, CP AF HATSELL, CP TI CARDIAC CYCLE PHASE UNCERTAINTY - ANOTHER SOURCE OF ERROR IN INDIRECT BLOOD-PRESSURE MEASUREMENT SO JOURNAL OF MEDICAL ENGINEERING & TECHNOLOGY LA English DT Article ID ADULTS AB Cardiac cycle phase uncertain causes a small error in indirect estimation of arterial blood pressure by sphygmomanometry. A simple analysis yields a statistical description of the error and a rule for its reduction: correct bias by adding to the systolic estimate and subtracting from the diastolic estimate one-half of the per-cardiac-cycle cuff deflation decrement. If several measurements are taken, the least-square estimate is approximately the arithmetic mean of the greatest and least of the bias corrected estimates. RP HATSELL, CP (reprint author), ARMSTRONG LAB,AEROSP MED DIRECTORATE,BROOKS AFB,TX 78235, USA. NR 11 TC 6 Z9 6 U1 0 U2 0 PU TAYLOR & FRANCIS LTD PI LONDON PA ONE GUNDPOWDER SQUARE, LONDON, ENGLAND EC4A 3DE SN 0309-1902 J9 J MED ENG TECHNOL JI J. Med. Eng. Technol. PD JUL-AUG PY 1992 VL 16 IS 4 BP 157 EP 158 DI 10.3109/03091909209030219 PG 2 WC Engineering, Biomedical; Medical Informatics; Medical Laboratory Technology SC Engineering; Medical Informatics; Medical Laboratory Technology GA JX925 UT WOS:A1992JX92500002 PM 1433246 ER PT J AU ASCHER, DP FISCHER, GW AF ASCHER, DP FISCHER, GW TI GROUP-B STREPTOCOCCAL LATEX AGGLUTINATION TESTING IN NEONATES - REPLY SO JOURNAL OF PEDIATRICS LA English DT Letter ID RAPID DIAGNOSIS; INFECTION C1 UNIFORMED SERV UNIV HLTH SCI, DEPT PEDIAT, BETHESDA, MD 20814 USA. RP ASCHER, DP (reprint author), WILFORD HALL USAF MED CTR, DEPT PEDIATR, SAN ANTONIO, TX 78236 USA. NR 6 TC 0 Z9 0 U1 0 U2 0 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 JUL PY 1992 VL 121 IS 1 BP 170 EP 170 DI 10.1016/S0022-3476(05)82584-3 PG 1 WC Pediatrics SC Pediatrics GA JC519 UT WOS:A1992JC51900050 ER PT J AU BROWN, FH OGLETREE, RC HOUSTON, GD AF BROWN, FH OGLETREE, RC HOUSTON, GD TI PNEUMOPAROTITIS ASSOCIATED WITH THE USE OF AN AIR-POWDER PROPHYLAXIS UNIT SO JOURNAL OF PERIODONTOLOGY LA English DT Article DE PAROTID GLAND INJURIES; BAROTRAUMA ETIOLOGY; DENTAL INSTRUMENTS ADVERSE EFFECTS ID SUBCUTANEOUS EMPHYSEMA; DENTAL EXTRACTION; SECONDARY; JET AB A CASE REPORTING BAROTRAUMA to the parotid gland secondarily to the use of an air-powder prophylaxis unit is presented. Air pressure associated with these units usually exceeds that for air/driven turbines or air/water dental syringes, yet the reported incidence of iatrogenic trauma is very low. Improper angulation in the use of these instruments may result in serious sequellae. Differential diagnosis and physical examination following trauma to the parotid is discussed. C1 REG HOSP EGLIN,AFSC,EGLIN AFB,FL. WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. NR 28 TC 20 Z9 20 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 JUL PY 1992 VL 63 IS 7 BP 642 EP 644 PG 3 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA JG887 UT WOS:A1992JG88700012 PM 1507043 ER PT J AU EVANS, DB KOEPPEN, RG AF EVANS, DB KOEPPEN, RG TI BAR ATTACHMENTS FOR OVERDENTURES WITH NONPARALLEL ABUTMENTS SO JOURNAL OF PROSTHETIC DENTISTRY LA English DT Article AB Bar attachments are easily fabricated and provide increased retention and support for overdentures. Nonparallel root abutments can preclude the routine use of bar attachments unless modifications are made in the design. This article reviews several existing techniques to successfully fabricate bar attachments in overdenture patients with nonparallel abutments. In addition, three alternative methods are presented for placing bar attachments on abutments with divergent roots. C1 WILFORD HALL USAF MED CTR,DEPT GEN DENT,SAN ANTONIO,TX. NR 18 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 0022-3913 J9 J PROSTHET DENT JI J. Prosthet. Dent. PD JUL PY 1992 VL 68 IS 1 BP 6 EP 11 DI 10.1016/0022-3913(92)90275-F PG 6 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA JC173 UT WOS:A1992JC17300003 PM 1403922 ER PT J AU KNUDSON, RC MEYER, JB MONTALVO, R AF KNUDSON, RC MEYER, JB MONTALVO, R TI SLEEP-APNEA PROSTHESIS FOR DENTATE PATIENTS SO JOURNAL OF PROSTHETIC DENTISTRY LA English DT Article AB This article describes clinical and laboratory techniques for the fabrication of a sleep apnea prosthesis for a dentate patient. The treatment objective is to posture the mandible at an increased vertical and protrusive position to diminish or eliminate the collapse of the base of tongue into the oropharynx. During fabrication of the prosthesis, cephalograms are used to evaluate spatial change between the base of the tongue and the posterior pharyngeal Wall. RP KNUDSON, RC (reprint author), WILFORD HALL USAF MED CTR,SGDF,DEPT MAXILLOFACIAL PROSTHET,LACKLAND AFB,TX 78236, USA. NR 4 TC 18 Z9 18 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 JUL PY 1992 VL 68 IS 1 BP 109 EP 111 DI 10.1016/0022-3913(92)90295-L PG 3 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA JC173 UT WOS:A1992JC17300023 PM 1403896 ER PT J AU PHILLIPS, WJ AF PHILLIPS, WJ TI BAND-MODEL PARAMETERS FOR 4.3 MU-M CO-2 BAND IN THE 300-1000-K TEMPERATURE REGION SO JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER LA English DT Article AB Moderate resolution (0.06 cm-1) Fourier-transform transmission spectra of the 4.3-mu-m band of CO2 were acquired at selected pressures and concentrations over a temperature range from 300 to 1000 K. These spectra were degraded to a 5 cm-1 bandpass and fit to a combined Lorentz-Doppler-broadening band model to determine band-model parameters utilizing a nonlinear least-square algorithm. Comparisons of selected band-model parameters obtained by us are made with preexisting data. Spectrally-degraded, line-by-line spectral calculations are compared with spectra calculated using our band-model parameters determined in this work. RP PHILLIPS, WJ (reprint author), SVERDRUP TECHNOL INC,AEDC GRP,ARNOLD ENGN DEV CTR,ARNOLD AFB,TN 37389, USA. NR 16 TC 12 Z9 12 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0022-4073 J9 J QUANT SPECTROSC RA JI J. Quant. Spectrosc. Radiat. Transf. PD JUL PY 1992 VL 48 IS 1 BP 91 EP 104 DI 10.1016/0022-4073(92)90009-S PG 14 WC Optics; Spectroscopy SC Optics; Spectroscopy GA JC889 UT WOS:A1992JC88900008 ER PT J AU RITTER, JE JAKUS, K GODIN, MH AF RITTER, JE JAKUS, K GODIN, MH TI COMPARISON OF HIGH-TEMPERATURE CRACK-GROWTH IN SIC-WHISKER-REINFORCED MULLITE AND SI3N4 SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY LA English DT Article DE CRACK GROWTH; HIGH TEMPERATURE; WHISKERS; MULLITE; SILICON NITRIDE ID SILICON-NITRIDE; ALUMINUM-OXIDE; CREEP; COMPOSITES; PERFORMANCE; CERAMICS; FRACTURE; CARBIDE; AL2O3 AB Crack growth behavior under creep conditions was studied in SiC-whisker-reinforced mullite and silicon nitride. Tests of four-point bend specimens with indentation cracks were periodically interrupted to observe the creep behavior. At each interruption the bulk creep strain of the specimen, the growth of the indentation cracks, and the nucleation and growth of creep-induced cracks were measured. A strong linear correlation was observed in both materials between the crack growth rate and the creep strain rate. For a given strain rate, cracks in the silicon nitride composite propagated at velocities about an order of magnitude greater than those in the mullite composite. On the other hand, for similar nominal stresses, creep rates in the silicon nitride composites were about an order of magnitude less than with the mullite composite. C1 WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433. RP RITTER, JE (reprint author), UNIV MASSACHUSETTS,DEPT MECH ENGN,AMHERST,MA 01003, USA. NR 17 TC 9 Z9 9 U1 0 U2 0 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 JUL PY 1992 VL 75 IS 7 BP 1760 EP 1766 DI 10.1111/j.1151-2916.1992.tb07194.x PG 7 WC Materials Science, Ceramics SC Materials Science GA JE283 UT WOS:A1992JE28300007 ER PT J AU WILKES, JS ZAWOROTKO, MJ AF WILKES, JS ZAWOROTKO, MJ TI AIR AND WATER STABLE 1-ETHYL-3-METHYLIMIDAZOLIUM BASED IONIC LIQUIDS SO JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS LA English DT Article ID TEMPERATURE AB A series of novel air and water stable low melting salts based upon the 1-ethyl-3-methylimidazolium cation (EtMeim+) have been prepared and characterized; two salts, [EtMeim]BF4 and [EtMeim]MeCO2, are liquids under ambient conditions. C1 USAF ACAD,FRANK J SEILER RES LAB,COLORADO SPRINGS,CO 80840. ST MARYS UNIV,DEPT CHEM,HALIFAX B3H 3C3,NS,CANADA. RI zaworotko, michael/A-7448-2009 OI zaworotko, michael/0000-0002-1360-540X NR 15 TC 1095 Z9 1118 U1 34 U2 330 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON ROAD, CAMBRIDGE, CAMBS, ENGLAND CB4 4WF SN 0022-4936 J9 J CHEM SOC CHEM COMM JI J. Chem. Soc.-Chem. Commun. PD JUL 1 PY 1992 IS 13 BP 965 EP 967 DI 10.1039/c39920000965 PG 3 WC Chemistry, Multidisciplinary SC Chemistry GA JB046 UT WOS:A1992JB04600025 ER PT J AU REESE, JR AF REESE, JR TI WORLD-WAR-II AND THE WEST - RESHAPING THE ECONOMY - NASH,GD 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 JUL PY 1992 VL 31 IS 3 BP 125 EP 125 PG 1 WC History SC History GA JJ409 UT WOS:A1992JJ40900024 ER PT J AU BOWMAN, WJ WINN, RC MARTIN, HL AF BOWMAN, WJ WINN, RC MARTIN, HL TI TRANSIENT HEAT-PIPE MODELING - A QUASI-STEADY, INCOMPRESSIBLE VAPOR MODEL SO JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER LA English DT Note C1 USAF, INST TECHNOL, WRIGHT PATTERSON AFB, OH 45433 USA. USAF ACAD, COLORADO SPRINGS, CO 80840 USA. NR 11 TC 5 Z9 5 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA SN 0887-8722 J9 J THERMOPHYS HEAT TR JI J. Thermophys. Heat Transf. PD JUL-SEP PY 1992 VL 6 IS 3 BP 571 EP 574 DI 10.2514/3.406 PG 4 WC Thermodynamics; Engineering, Mechanical SC Thermodynamics; Engineering GA JQ546 UT WOS:A1992JQ54600035 ER PT J AU SZMULOWICZ, F MANASREH, MO AF SZMULOWICZ, F MANASREH, MO TI EFFECT OF MANY-BODY CORRECTIONS ON INTERSUBBAND TRANSITIONS IN GAAS/ALXGA1-XAS MULTIPLE QUANTUM-WELLS - COMMENT SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B LA English DT Note ID DENSITY FUNCTIONAL FORMALISM; INFRARED-ABSORPTION C1 WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP SZMULOWICZ, F (reprint author), UNIV DAYTON,RES INST,DAYTON,OH 45469, USA. NR 9 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 1071-1023 J9 J VAC SCI TECHNOL B JI J. Vac. Sci. Technol. B PD JUL-AUG PY 1992 VL 10 IS 4 BP 1341 EP 1342 DI 10.1116/1.585866 PG 2 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Physics, Applied SC Engineering; Science & Technology - Other Topics; Physics GA JJ600 UT WOS:A1992JJ60000014 ER PT J AU BOMBARD, AT RIGDON, DT AF BOMBARD, AT RIGDON, DT TI PROSPECTIVE PILOT EVALUATION OF EARLY (11-14 WEEKS GESTATION) AMNIOCENTESIS IN 75 PATIENTS SO MILITARY MEDICINE LA English DT Article AB Prenatal diagnosis by amniocentesis has traditionally been accomplished at 15-18 weeks' gestation. Cytogenetic and biochemical results are usually available in 7-28 days, that is, by 16-22 weeks' gestation. Amniocentesis performed at 11-14 weeks facilitates earlier diagnosis, in some cases before 12 weeks' gestation. During the study period, 726 genetic amniocenteses were performed, 75 as part of the prospective early amniocentesis protocol. Of the 75 patients included in this pilot study, as well as the 75 patients in the control group, the success rate for obtaining an accurate cytogenetic diagnosis by early amniocentesis was 75/75 (100%) and the complication rate was 2/75 (2.6%: incidence of need for repeat amniocentesis, 1/75; uncorrected spontaneous abortion rate, 1/75). The indications for referral, population profile, mean gestational age at testing, and both the cytogenetic as well as obstetric outcomes are summarized in the report. This pilot study supports the hypothesis that amniocentesis at 11-14 weeks is efficacious when performed by experienced personnel and affords earlier counseling, testing, and availability of results compared to traditional amniocentesis. RP BOMBARD, AT (reprint author), USAF,MED CTR KEESLER,DEPT OBSTET & GYNECOL,KEESLER AFB,MS 39534, USA. NR 0 TC 10 Z9 10 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 1992 VL 157 IS 7 BP 339 EP 341 PG 3 WC Medicine, General & Internal SC General & Internal Medicine GA JD344 UT WOS:A1992JD34400007 ER PT J AU MURCHISON, DF MOORE, BK AF MURCHISON, DF MOORE, BK TI INFLUENCE OF CURING TIME AND DISTANCE ON MICROHARDNESS OF 8 LIGHT-CURED LINERS SO OPERATIVE DENTISTRY LA English DT Article AB Eight visible-light-activated liners were evaluated to assess the degree of polymerization by microhardness comparison. Knoop hardness number values were measured on 1.0 mm-thick specimens with varied exposure times (20, 40, 60 seconds) and distances from the curing source (0, 3, 6 mm). Statistical analysis of the nine groups within each material revealed significant differences for time and distance (P < 0.05). Application of the light for at least 40 seconds resulted in significantly higher Knoop hardness number values than specimens cured for 20 seconds. The highest Knoop hardness values were obtained if the tip of the light source was 3 mm away from the light-activated liner. RP MURCHISON, DF (reprint author), USAF,MED CTR,KEESLER AFB,MS 39534, USA. NR 0 TC 10 Z9 10 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 JUL-AUG PY 1992 VL 17 IS 4 BP 135 EP 141 PG 7 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA JP027 UT WOS:A1992JP02700004 PM 1337601 ER PT J AU MILLER, MD RAGSDALE, BD SWEET, DE AF MILLER, MD RAGSDALE, BD SWEET, DE TI PAROSTEAL LIPOMAS - A NEW PERSPECTIVE SO PATHOLOGY LA English DT Article DE PAROSTEAL LIPOMAS; NEOPLASMS; CHONDROID MODULATION; ENCHONDRAL OSSIFICATION AB Parosteal lipomas, benign adipose tissue tumors situated directly on bone cortex, are unusual neoplasms that appear to emerge from multidirectional mesenchymal "modulation" within the periosteum. These tumors have been described as "periosteal lipomas", "chondrolipomas of soft tissue" and "lipomas of nerves" but they are most commonly believed to originate from the periosteum. Although over 100 of such tumors have been described in the literature, they have not been the subject of a comprehensive review, nor their potential for chondroid modulation and enchondral ossification emphasized. A review of 14 parosteal lipomas from the Bone Tumor Registry, Armed Forces Institute of Pathology, indicates these tumors are frequently associated with chondroid and/or osseous modulation, which permits subclassification into 4 distinct variants. Each of the 4 subtypes (I: No Ossification; II: Pedunculated Exostosis; III: Sessile Exostosis; IV: Patchy Chondro-Osseous Modulation) is illustrated to demonstrate the morphologic basis for radiologic/pathologic correlation and subclassification. A brief overview of the literature and pathogenesis of this unusual lesion is presented and discussed. C1 USAF,WILFORD HALL MED CTR,DEPT ORTHOPAED SURG,LACKLAND AFB,TX 78236. CLINPATH ASSOCIATES SONORA LAB SCI,MESA,AZ. ARMED FORCES INST PATHOL,DEPT ORTHOPAED PATHOL,WASHINGTON,DC 20306. NR 23 TC 28 Z9 30 U1 0 U2 1 PU ROYAL COLLEGE PATHOLOGISTS AUSTRALIA PI SURREY HILLS PA DURHAM HALL, 207 ALBION ST, SURREY HILLS NSW 2010, AUSTRALIA SN 0031-3025 J9 PATHOLOGY JI Pathology PD JUL PY 1992 VL 24 IS 3 BP 132 EP 139 PG 8 WC Pathology SC Pathology GA JT866 UT WOS:A1992JT86600002 PM 1437283 ER PT J AU JAMES, D AF JAMES, D TI IMPLICIT NULLSPACE ITERATIVE METHODS FOR CONSTRAINED LEAST-SQUARES PROBLEMS SO SIAM JOURNAL ON MATRIX ANALYSIS AND APPLICATIONS LA English DT Article DE CONSTRAINED LEAST SQUARES; FORCE METHOD; NULLSPACE METHOD; STOKES FLOW; STRUCTURAL ANALYSIS; SUBSTRUCTURING ID EQUILIBRIUM EQUATIONS; SCHEMES AB A class of iterative algorithms is proposed for solving equality constrained least squares problems, generalizing an order-reducing algorithm first analyzed by Barlow, Nichols, and Plemmons (algorithm BNP). The new algorithms, called implicit null space methods, are based on the classical nullspace method, except that the basis for the nullspace of the constraint matrix is not explicitly formed. The implicit basis acts as a preconditioner for a set of normal equations in factored form. Implicit nullspace methods allow great flexibility in the choice of preconditioner, and can be used to solve certain problems for which algorithm BNP is not well suited. In addition, they offer the opportunity for parallel implementation on substructured problems. Some numerical results based on both structural engineering applications and Stokes flow are included. RP JAMES, D (reprint author), USAF ACAD,DEPT MATH SCI,COLORADO SPRINGS,CO 80840, USA. NR 19 TC 6 Z9 6 U1 1 U2 1 PU SIAM PUBLICATIONS PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 SN 0895-4798 J9 SIAM J MATRIX ANAL A JI SIAM J. Matrix Anal. Appl. PD JUL PY 1992 VL 13 IS 3 BP 962 EP 978 DI 10.1137/0613058 PG 17 WC Mathematics, Applied SC Mathematics GA HZ289 UT WOS:A1992HZ28900017 ER PT J AU RUST, DM KEIL, SL AF RUST, DM KEIL, SL TI A SEARCH FOR POLARIZATION IN ELLERMAN BOMBS SO SOLAR PHYSICS LA English DT Article ID MOUSTACHES AB Ellerman bombs, also called 'moustaches', are transient brightenings at tiny ( < 1 arc sec) points in the lower chromosphere whose spectra are characterized by elongated emission wings on the hydrogen Balmer lines. Babin and Koval recently found linear polarization as high as 20% in bombs, but no physical process that could produce such a high degree of polarization was suggested. A new observational study of polarization in Ellerman bombs is reported here. Images of 32 bombs were obtained with a digital video system viewing the Sun through a 6 A filter at the Sacramento Peak Vacuum Tower Telescope. A novel polarizing beamsplitter divided each image into two interleaved polarized components which passed simultaneously through a single set of optics and were separated only during data analysis. The sensitivity threshold of the measurements was approximately 1 %. In 4 cases out of 32, linear polarization above 2% was detected. The higher incidence of > 2% polarization reported by Babin and Koval is not confirmed. C1 USAF,PHILLIPS LAB,SACRAMENTO PEAK OBSERV,SUNSPOT,NM 88349. RP RUST, DM (reprint author), JOHNS HOPKINS UNIV,APPL PHYS LAB,LAUREL,MD 20723, USA. NR 22 TC 20 Z9 20 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0038-0938 J9 SOL PHYS JI Sol. Phys. PD JUL PY 1992 VL 140 IS 1 BP 55 EP 65 DI 10.1007/BF00148429 PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA JD637 UT WOS:A1992JD63700005 ER PT J AU MCKELLAR, DP DUTRO, JA MESGHALI, H AF MCKELLAR, DP DUTRO, JA MESGHALI, H TI VASCULAR COMPLICATIONS AFTER TOTAL KNEE REPLACEMENT - CASE-REPORTS SO VASCULAR SURGERY LA English DT Article AB Despite the close association of the popliteal artery to the knee joint, relatively few cases of arterial injury following total knee replacement have been reported. The authors report 2 patients with total knee prostheses who developed hemarthrosis due to pseudoaneurysm formation originating from the geniculate branches of the popliteal artery. In 1 patient, early arteriography led to a prompt diagnosis and treatment with subsequent good outcome. In the second patient the diagnosis was delayed, for an arteriogram was performed only after recurrent bleeding. This patient had a prolonged course eventually necessitating removal of the total knee prosthesis. These cases emphasize the need for a high index of suspicion for arterial injury in patients who undergo total knee replacement with subsequent development of hemarthrosis or persistent bleeding. Early arteriography to establish the diagnosis is advocated. RP MCKELLAR, DP (reprint author), USAF,WRIGHT PATTERSON MED CTR,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU WESTMINSTER PUBL INC PI GLEN HEAD PA 708 GLEN COVE AVE, GLEN HEAD, NY 11545 SN 0042-2835 J9 VASCULAR SURG JI Vasc. Surg. PD JUL-AUG PY 1992 VL 26 IS 6 BP 506 EP 508 DI 10.1177/153857449202600612 PG 3 WC Surgery; Peripheral Vascular Disease SC Surgery; Cardiovascular System & Cardiology GA JD323 UT WOS:A1992JD32300012 ER PT J AU TITUS, J AF TITUS, J TI A QUEST FOR GLORY - HOWE,ROBERT AND THE AMERICAN-REVOLUTION - BENNETT,CE, LENNON,DR SO WILLIAM AND MARY QUARTERLY LA English DT Book Review RP TITUS, J (reprint author), USAF ACAD,COLORADO SPRINGS,CO 80840, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU INST EARLY AMER HIST CULT PI WILLIAMSBURG PA BOX 220, WILLIAMSBURG, VA 23187 SN 0043-5597 J9 WILLIAM MARY QUART JI William Mary Q. PD JUL PY 1992 VL 49 IS 3 BP 560 EP 562 DI 10.2307/2947126 PG 3 WC History SC History GA JC590 UT WOS:A1992JC59000025 ER PT J AU KIRBY, K ROSENKRANTZ, ME COOPER, DL AF KIRBY, K ROSENKRANTZ, ME COOPER, DL TI POPULATION OF LONG-LIVED VIBRATIONAL LEVELS OF CO - I(1)SIGMA- AND D(1)DELTA SO PHYSICAL REVIEW LETTERS LA English DT Article ID CARBON-MONOXIDE; METASTABLE STATE; SPECTROSCOPY; TRANSITION; H-2; EXCITATION AB The lowest vibrational energy levels of the I1-SIGMA- and D1-DELTA states of CO, which lie approximately 8 eV above the X1-SIGMA+ ground state, are predicted to have very long radiative lifetimes, in excess of 1 s for electric dipole transitions. These states cannot predissociate and the couplings with levels of the A1-PI state are very small. There is, therefore, the possibility of using the upsilon=0 levels of the I1-SIGMA- and D1-DELTA as reservoirs for highly energetic molecules. In order to encourage experimental studies, methods are proposed for populating the upsilon=0 levels of the I1-SIGMA- and D1-DELTA states, including stimulated emission from the W1-PI state. C1 USAF,ASTRONAUT LAB,EDWARDS AFB,CA 93523. UNIV LIVERPOOL,DEPT CHEM,LIVERPOOL L69 3BX,ENGLAND. RP KIRBY, K (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 28 TC 4 Z9 4 U1 2 U2 4 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD JUN 29 PY 1992 VL 68 IS 26 BP 3865 EP 3868 DI 10.1103/PhysRevLett.68.3865 PG 4 WC Physics, Multidisciplinary SC Physics GA JA760 UT WOS:A1992JA76000012 ER PT J AU JAUCHEM, JR AF JAUCHEM, JR TI OCCUPATIONAL EXPOSURE TO ELECTROMAGNETIC-FIELDS AND BREAST-CANCER IN MEN SO AMERICAN JOURNAL OF EPIDEMIOLOGY LA English DT Letter ID RISK RP JAUCHEM, JR (reprint author), OCCUPAT & ENVIRONM HLTH DIRECTORATE,DIV DIRECTED ENERGY,ARMSTRONG LAB,BROOKS AFB,TX 78235, USA. NR 9 TC 2 Z9 2 U1 0 U2 0 PU JOHNS HOPKINS UNIV SCHOOL HYGIENE PUB HEALTH PI BALTIMORE PA 111 MARKET PLACE, STE 840, BALTIMORE, MD 21202-6709 SN 0002-9262 J9 AM J EPIDEMIOL JI Am. J. Epidemiol. PD JUN 15 PY 1992 VL 135 IS 12 BP 1423 EP 1424 PG 2 WC Public, Environmental & Occupational Health SC Public, Environmental & Occupational Health GA KT259 UT WOS:A1992KT25900011 PM 1510087 ER PT J AU LOOK, DC WALTERS, DC STUTZ, CE EVANS, KR SIZELOVE, JR AF LOOK, DC WALTERS, DC STUTZ, CE EVANS, KR SIZELOVE, JR TI MECHANISMS FOR GAAS SURFACE PASSIVATION BY A MOLECULAR-BEAM EPITAXIAL CAP LAYER GROWN AT 200-DEGREES-C SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID FERMI LEVEL; ELECTRONIC-PROPERTIES; DEPLETION CORRECTIONS; HALL MEASUREMENTS; INTERFACE; BAND; SULFIDE; CHARGE; MODEL AB A thin, undoped, molecular beam epitaxial (MBE) GaAs cap layer grown on top of an n-type conductive layer significantly reduces the free-electron depletion from the latter. By analyzing electron transfer to surface, interface, and bulk acceptor states in the cap, as a function of cap thickness, we show that either (1) the usual E(C)- 0.7 eV surface states are absent, (2) a dense donor near E(C)- 0.4 eV exists or (3) a high donor interface charge (approximately 5X10(12) cm-2) is present. Any of these conclusions constitutes an important new aspect of low-temperature MBE GaAs. C1 WRIGHT LAB,SOLID STATE ELECTR DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP LOOK, DC (reprint author), WRIGHT STATE UNIV,UNIV RES CTR,DAYTON,OH 45435, USA. NR 20 TC 9 Z9 9 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 JUN 15 PY 1992 VL 71 IS 12 BP 5981 EP 5984 DI 10.1063/1.350450 PG 4 WC Physics, Applied SC Physics GA HZ316 UT WOS:A1992HZ31600035 ER PT J AU WILSON, M COOLIDGE, MB MAINS, GJ AF WILSON, M COOLIDGE, MB MAINS, GJ TI STABILITY AND STRUCTURE OF LEWIS ADDUCTS OF ALUMINUM HYDRIDES AND HALIDES SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article ID SPECTRA AB Structures for the adducts formed by AlH, AlF, AlCl, AlH2, AlF2, AlCl2, AlH3, AlF3, AlCl3, AlHF2, AlHCl2, AlH2F, and AlH2Cl with HCl and HF have been explored at the HF/6-31G* level. In all but two cases, AlF(3-PI) and AlCl(3-PI) with HCl, stable adducts were found. Vibrational analysis at the Hartree-Fock level was used to assure that the stationary points were minima and for determination of zero point energies. Correlation was taken into account by fourth-order perturbation theory, MP4(SDTQ)/6-31G*//HF/6-31G*. In a few instances the starting geometry rearranged to form hydrogen-bonded structures. Comparison of dissociation energies for the HF and HCl adducts suggests that the F atom in HF is a better Lewis base than the Cl atom in HCl. The adduct dissociation energies increased in the following order: AlF2H > AlF3 > AlCl3 > AlFH2 > AlHCl2 > AlH2Cl >> AlH3 whereas the order of increasing Lewis acidity was AlF3 > AlF2H > AlCl3 > AlFH2 > AlHCl2 > AlClH2 > AlH3. C1 OKLAHOMA STATE UNIV,DEPT CHEM,STILLWATER,OK 74078. USAF ACAD,FJ SEILER RES LAB,COLORADO SPRINGS,CO 80840. NR 33 TC 34 Z9 34 U1 2 U2 5 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 JUN 11 PY 1992 VL 96 IS 12 BP 4851 EP 4859 DI 10.1021/j100191a025 PG 9 WC Chemistry, Physical SC Chemistry GA HY322 UT WOS:A1992HY32200025 ER PT J AU LOOK, DC WALTERS, DC MIER, M STUTZ, CE BRIERLEY, SK AF LOOK, DC WALTERS, DC MIER, M STUTZ, CE BRIERLEY, SK TI NATIVE DONORS AND ACCEPTORS IN MOLECULAR-BEAM EPITAXIAL GAAS GROWN AT 200-DEGREES-C SO APPLIED PHYSICS LETTERS LA English DT Article ID INFRARED-ABSORPTION; EL2 AB Absorption measurements at 1.1 and 1.2-mu-m were used along with the known electron and hole photoionization cross sections for EL2 to determine deep donor (EL2-like) and acceptor concentrations N(D)=9.9X10(19) and N(A)=7.9X10(18) cm-3, respectively, in a 2-mu-m-thick molecular-beam epitaxial GaAs layer grown at 200-degrees-C on a 2-in.-diam semi-insulating wafer. Both lateral and depth uniformities of N(D) over the wafer were excellent as was also the case for the conductivity. Band conduction was negligible compared to hopping conduction at 296 K as evidenced by the lack of a measurable Hall coefficient. C1 WRIGHT LAB,SOLID STATE ELECTR DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RAYTHEON CORP,DIV RES,LEXINGTON,MA 02173. RP LOOK, DC (reprint author), WRIGHT STATE UNIV,UNIV RES CTR,DAYTON,OH 45435, USA. NR 7 TC 55 Z9 55 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 JUN 8 PY 1992 VL 60 IS 23 BP 2900 EP 2902 DI 10.1063/1.106813 PG 3 WC Physics, Applied SC Physics GA HX466 UT WOS:A1992HX46600027 ER PT J AU KHAN, MA KUZNIA, JN OLSON, DT VANHOVE, JM BLASINGAME, M REITZ, LF AF KHAN, MA KUZNIA, JN OLSON, DT VANHOVE, JM BLASINGAME, M REITZ, LF TI HIGH-RESPONSIVITY PHOTOCONDUCTIVE ULTRAVIOLET SENSORS BASED ON INSULATING SINGLE-CRYSTAL GAN EPILAYERS SO APPLIED PHYSICS LETTERS LA English DT Article AB We report on the fabrication and characterization of photoconductive ultraviolet detectors based on insulating single-crystal GaN. The active layer (GaN) was deposited over basal-plane sapphire substrates using a unique switched atomic-layer-epitaxy process. The sensors were measured to have a responsivity of 2000 A/W at a wavelength of 365 nm under a 5-V bias. The responsivity remained nearly constant for wavelengths from 200 to 365 nm and dropped by three orders of magnitude within 10 nm of the band edge (by 375 nm). We estimate our sensors to have a gain of 6X10(3) (for wavelength 365 nm) and a bandwidth in excess of 2 kHz. The photosignal exhibited a linear behavior over five orders of incident optical power, thereby implying a very large dynamic range for these GaN-based ultraviolet sensors. C1 WRIGHT LAB,SOLID STATE ELECTR DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP KHAN, MA (reprint author), APA OPT INC,2950 NE 84TH LANE,BLAINE,MN 55434, USA. NR 8 TC 292 Z9 304 U1 9 U2 43 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 JUN 8 PY 1992 VL 60 IS 23 BP 2917 EP 2919 DI 10.1063/1.106819 PG 3 WC Physics, Applied SC Physics GA HX466 UT WOS:A1992HX46600033 ER PT J AU PALAZOTTO, AN CHIEN, LS TAYLOR, WW AF PALAZOTTO, AN CHIEN, LS TAYLOR, WW TI STABILITY CHARACTERISTICS OF LAMINATED CYLINDRICAL PANELS UNDER TRANSVERSE LOADING SO AIAA JOURNAL LA English DT Article ID SHELLS; SHEAR AB Static and dynamic approaches for the stability analysis of a laminated composite arch, a laminated composite cylindrical panel, and an elastic isotropic cylindrical panel subjected to transverse loading are discussed. The inspiration Of this stability analysis during the snapping process is based on the phenomenon of energy transfer from potential energy to kinetic energy as the applied load reaches the critical value. Some important features in dynamic analysis characterizing the snapping motion, which are not observed in static analysis, are shown. Different snapping phenomena in dynamic analyses are presented in terms of variations in depth and effects of anisotropy. RP PALAZOTTO, AN (reprint author), USAF,INST TECHNOL,DEPT AERONAUT & ASTRONAUT,WRIGHT PATTERSON AFB,OH 45433, USA. NR 10 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 JUN PY 1992 VL 30 IS 6 BP 1649 EP 1653 DI 10.2514/3.11113 PG 5 WC Engineering, Aerospace SC Engineering GA HX732 UT WOS:A1992HX73200028 ER PT J AU JAUCHEM, JR AF JAUCHEM, JR TI EPIDEMIOLOGIC STUDIES ON ELECTROMAGNETIC-FIELDS AND CANCER SO AMERICAN JOURNAL OF PUBLIC HEALTH LA English DT Letter RP JAUCHEM, JR (reprint author), OCCUPAT & ENVIRONM HLTH DIRECTORATE,ARMSTRONG LAB,BROOKS AFB,TX 78235, USA. NR 10 TC 1 Z9 1 U1 0 U2 0 PU AMER PUBLIC HEALTH ASSOC INC PI WASHINGTON PA 1015 FIFTEENTH ST NW, WASHINGTON, DC 20005 SN 0090-0036 J9 AM J PUBLIC HEALTH JI Am. J. Public Health PD JUN PY 1992 VL 82 IS 6 BP 897 EP 898 DI 10.2105/AJPH.82.6.897-a PG 2 WC Public, Environmental & Occupational Health SC Public, Environmental & Occupational Health GA HW165 UT WOS:A1992HW16500031 PM 1585977 ER PT J AU ROBERSON, KT THOMAS, TC SHERMAN, LR AF ROBERSON, KT THOMAS, TC SHERMAN, LR TI COMPARISON OF ASBESTOS AIR SAMPLES BY SEM-EDXA AND TEM-EDXA SO ANNALS OF OCCUPATIONAL HYGIENE LA English DT Article AB Because occupational air samples submitted to this laboratory for fibre counting often need to be confirmed as to the type of asbestos, random air samples were compared by a scanning electron microscope (SEM) and a transmission electron microscope (TEM) to determine if both methods yielded comparable results. The results of this study revealed neither an advantage nor a disadvantage for confirmatory analyses of asbestos by either SEM or TEM. Several distinct characteristics were observed during the study. TEM analyses showed an apparent bias towards determination of chrysotile fibres, while SEM showed a strong bias towards amosite fibres. Both methods were equally reliable in determining asbestos fibres in samples whose fibre count was greater than 30 fibres per 100 fields. SEM was shown to be a valuable tool for providing good initial information to field personnel. C1 OCCUPAT & ENVIRONM HLTH DIRECTORATE,ARMSTRONG LAB,BROOKS AFB,TX 78235. UNIV SCRANTON,DEPT CHEM,SCRANTON,PA 18510. NR 9 TC 5 Z9 5 U1 0 U2 3 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0003-4878 J9 ANN OCCUP HYG JI Ann. Occup. Hyg. PD JUN PY 1992 VL 36 IS 3 BP 265 EP 269 DI 10.1093/annhyg/36.3.265 PG 5 WC Public, Environmental & Occupational Health; Toxicology SC Public, Environmental & Occupational Health; Toxicology GA JA996 UT WOS:A1992JA99600004 ER PT J AU BROADFOOT, AL SANDEL, BR KNECHT, D VIERECK, R MURAD, E AF BROADFOOT, AL SANDEL, BR KNECHT, D VIERECK, R MURAD, E TI PANCHROMATIC SPECTROGRAPH WITH SUPPORTING MONOCHROMATIC IMAGERS SO APPLIED OPTICS LA English DT Article ID ATMOSPHERIC MODIFICATION EXPERIMENT; DEPLETION EXPERIMENTS; PLASMA DEPLETION; EMISSIONS; DYNAMICS; ARECIBO AB The Arizona Imager/Spectrograph is a set of imaging spectrographs and two-dimensional imagers for space flight. Nine nearly identical spectrographs record wavelengths from 114 to 1090 nm with a resolution of 0.5-1.3 nm. The spatial resolution along the slit is electronically selectable and can reach 192 elements. Twelve passband imagers cover wavelengths in the 160-900-mn range and have fields of view from 2-degrees to 21-degrees. The spectrographs and imagers rely on intensified CCD detectors to achieve substantial capability in an instrument of minimum mass and size. By use of innovative coupling techniques only two CCD's are required to record images from 12 imagers, and single CCD's record spectra from pairs of spectrographs. The fields of view of the spectrographs and imagers are coaligned, and all spectra and images can be exposed simultaneously. A scan platform can rotate the sensor head about two orthogonal axes. The Arizona imager/spectrograph is designed for investigations of the interaction between the Space Shuttle and its environment. It is scheduled for flight on a Shuttle subsatellite. C1 USAF,GEOPHYS LAB,BEDFORD,MA 01731. RP BROADFOOT, AL (reprint author), UNIV ARIZONA,LUNAR & PLANETARY LAB,TUCSON,AZ 85721, USA. NR 9 TC 24 Z9 24 U1 1 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 JUN 1 PY 1992 VL 31 IS 16 BP 3083 EP 3096 PG 14 WC Optics SC Optics GA HV954 UT WOS:A1992HV95400025 PM 20725253 ER PT J AU BRAY, RM MARSDEN, ME HERBOLD, JR PETERSON, MR AF BRAY, RM MARSDEN, ME HERBOLD, JR PETERSON, MR TI PROGRESS TOWARD ELIMINATING DRUG AND ALCOHOL-ABUSE AMONG UNITED-STATES MILITARY PERSONNEL SO ARMED FORCES & SOCIETY LA English DT Article ID AMERICAN AB Since 1970, the Department of Defense has set forth a series of policies and programs to combat drug and alcohol abuse among military personnel. The goal of the current policy is one of zero tolerance toward drug and alcohol abuse. Programmatic areas to help attain this goal are assessment, deterrence and detection, treatment and rehabilition, and education and training. Progress toward eliminating drug and alcohol abuse among military personnel is traced by examining efforts in each of these programmatic areas. The authors conclude that the dramatic decreases in drug use and more stable patterns of alcohol use since 1980 indicate that military policy and programs to eliminate drug abuse have been highly successful, but that military efforts to eliminate alcohol abuse should be intensified. C1 BRANDEIS UNIV,BIGEL INST HLTH POLICY,HELLER SCH,WALTHAM,MA 02254. ARMSTRONG LAB,EPIDEMIOL & PUBL HLTH,BROOKS AFB,TX. RP BRAY, RM (reprint author), RES TRIANGLE INST,POB 12194,RES TRIANGLE PK,NC 27709, USA. NR 21 TC 11 Z9 11 U1 1 U2 1 PU TRANSACTION PERIOD CONSORTIUM PI NEW BRUNSWICK PA DEPT 3091 RUTGERS-THE STATE UNIV OF NJ, NEW BRUNSWICK, NJ 08903 SN 0095-327X J9 ARMED FORCES SOC JI Armed Forces Soc. PD SUM PY 1992 VL 18 IS 4 BP 476 EP 496 DI 10.1177/0095327X9201800403 PG 21 WC Political Science; Sociology SC Government & Law; Sociology GA JM373 UT WOS:A1992JM37300003 ER PT J AU ANDERSON, ST KLEIN, EC AF ANDERSON, ST KLEIN, EC TI EOSINOPHILIC FASCIITIS IN A RHESUS MACAQUE SO ARTHRITIS AND RHEUMATISM LA English DT Article ID MYALGIA-SYNDROME; DISEASE; SCLERODERMA AB Eosinophilic fasciitis (EF) is an inflammatory disorder in the category of scleroderma-like connective tissue diseases. There are no animal models for spontaneously occurring EF. We present the case of a rhesus macaque (Macaca mulatta) with clinical, laboratory, and histologic features of EF. C1 UNIV PITTSBURGH,DEPT LAB ANIM RESOURCES,PITTSBURGH,PA 15260. RP ANDERSON, ST (reprint author), WILFORD HALL USAF MED CTR,RHEUMATOL SERV,LACKLAND AFB,TX 78236, USA. NR 15 TC 5 Z9 5 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 0004-3591 J9 ARTHRITIS RHEUM JI Arthritis Rheum. PD JUN PY 1992 VL 35 IS 6 BP 714 EP 716 DI 10.1002/art.1780350618 PG 3 WC Rheumatology SC Rheumatology GA HX733 UT WOS:A1992HX73300017 PM 1599526 ER PT J AU BURTON, RR MEEKER, LJ AF BURTON, RR MEEKER, LJ TI PHYSIOLOGICAL VALIDATION OF A SHORT-ARM CENTRIFUGE FOR SPACE APPLICATION SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article AB A short-arm centrifuge (SAC) of 5-6 ft (1.5-1.8 m) radius may be useful in space to measure tolerances to acceleration (G) and to stimulate the cardiovascular system, thereby reducing cardiovascular decompensation that occurs in weightlessness. Relaxed rapid (lG/s onset rate, ROR) and gradual (0.1 G/s onset rate, GOR) G tolerances were measured on seven men using a 5-ft (1.5 m) radius centrifuge and compared with their G tolerances obtained on the 20-ft (6.1 m) radius human-use centrifuge at the Armstrong Laboratory, Brooks AFB, TX. Since the subjects were required to flex their legs to assume a squatting position on the SAC, a similar position was used on the 20 ft (6.1 m) centrifuge called feet up (FU), and compared with normal-seated +G. tolerances (controls). The subjects tolerated the SAC exposures without any problems. ROR and GOR tolerances were as follows: control, 3.6 G and 4.2 G; FU, 4.5 G and 5.6 G; and SAC, 4.6 G and 6.4 G. We concluded that a 5-ft radius centrifuge can be used to measure G tolerances. The increases in the SAC GOR tolerances over ROR tolerances indicate that the baroceptors were stimulated by the G, and the SAC exposure would be useful in preventing cardiovascular decompensation in microgravity. RP BURTON, RR (reprint author), ARMSTRONG LAB,CREW SYST DIRECTORATE,DIV CREW TECHNOL,AL-CF-CA,BROOKS AFB,TX 78235, USA. NR 7 TC 26 Z9 28 U1 0 U2 2 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 1992 VL 63 IS 6 BP 476 EP 481 PG 6 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA HX203 UT WOS:A1992HX20300002 PM 1520216 ER PT J AU LEE, DJ MEEHAN, RT ROBINSON, C MABRY, TR SMITH, ML AF LEE, DJ MEEHAN, RT ROBINSON, C MABRY, TR SMITH, ML TI IMMUNE RESPONSIVENESS AND RISK OF ILLNESS IN UNITED-STATES-AIR-FORCE-ACADEMY CADETS DURING BASIC CADET TRAINING SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article ID EPSTEIN-BARR VIRUS; STRESS; HYBRIDIZATION; COMPLICATIONS; INFECTION AB It has been proposed, but not confirmed, that environmental stressors alter immune function and increase the risk of viral infection among healthy individuals. We evaluated this hypothesis, examining the relationship among stress, immune function, and illness in 96 first-year U.S. Air Force Academy cadets during Orientation and 4 weeks later during the stressful environment of Basic Cadet Training (BCT). Perceived stress and well-being levels of cadets were assessed via questionnaire. Immune responsiveness was analyzed by PHA-stimulated thymidine uptake in mononuclear leucocytes and by serologic evidence of reactivation of the Epstein-Barr virus (EBV). We documented significant declines in in vitro PHA-induced lymphocyte transformation (-35%; p < 0.05) and subjective well-being (-19%; P < 0.05) from orientation to BCT with corresponding, significant increases in perceived stress (+32%; p < 0.05). Despite significantly altered in vitro immune responsiveness, there was no serologic evidence of EBV reactivation nor was there an association between these measures and risk of illness as determined by medical chart review and self-reported symptoms. These results suggest that reduced in vitro immune responsiveness during a moderate stressor may not necessarily lead to an increased risk of infection and/or reactivation of EBV in normal individuals. C1 UNIV COLORADO,HLTH SCI CTR,DEPT INTERNAL MED,DENVER,CO 80262. UNIV COLORADO,HLTH SCI CTR,DEPT PATHOL,DENVER,CO 80262. USAF ACAD,DEPT BEHAV SCI & LEADERSHIP,COLORADO SPRINGS,CO 80840. RP LEE, DJ (reprint author), UNIV MIAMI,SCH MED,DEPT EPIDEMIOL & PUBL HLTH,POB 016069 R669,MIAMI,FL 33101, USA. NR 26 TC 30 Z9 30 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 JUN PY 1992 VL 63 IS 6 BP 517 EP 523 PG 7 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA HX203 UT WOS:A1992HX20300009 PM 1325771 ER PT J AU WATSON, GM AF WATSON, GM TI GROW,MALCOLM,C. AND THE ALASKAN FLIGHT (REPRINTED FROM UNITED-STATES AIR-FORCE MEDICAL-SERVICE DIGEST, VOL 42, PG 12-14, 1991) SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Reprint RP WATSON, GM (reprint author), OFF AIR FORCE SURGEON GEN,BOLLING AFB,DC 20338, USA. NR 3 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 JUN PY 1992 VL 63 IS 6 BP 543 EP 545 PG 3 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA HX203 UT WOS:A1992HX20300014 PM 1520227 ER PT J AU HAYCOX, JL AF HAYCOX, JL TI GUIDE TO IMAGING HARDWARE AND SOFTWARE SO BULLETIN OF THE AMERICAN SOCIETY FOR INFORMATION SCIENCE LA English DT Article RP HAYCOX, JL (reprint author), USAF,TESTBED,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC INFORM SCI MEMBER #110113 PI SILVER SPRING PA 8720 GEORGIA AVE SUITE 501, SILVER SPRING, MD 20910 SN 0095-4403 J9 B AM SOC INFORM INF JI Bull. Amer. Soc. Inf. Sci. PD JUN-JUL PY 1992 VL 18 IS 5 BP 13 EP 14 PG 2 WC Information Science & Library Science SC Information Science & Library Science GA JD069 UT WOS:A1992JD06900004 ER PT J AU LEONARDI, MR HANKINS, GDV AF LEONARDI, MR HANKINS, GDV TI WHATS NEW IN TOCOLYTICS SO CLINICS IN PERINATOLOGY LA English DT Review ID AMNIOTIC-FLUID INFECTION; PLACEBO-CONTROLLED TRIAL; LONG-TERM TOCOLYSIS; FETAL URINE OUTPUT; UTERINE BLOOD-FLOW; PRETERM LABOR; PREMATURE LABOR; INDOMETHACIN THERAPY; DUCTUS-ARTERIOSUS; DOUBLE-BLIND C1 USAF,MED CTR,DEPT PHOTOCHEM,LACKLAND AFB,TX 78236. NR 112 TC 14 Z9 14 U1 0 U2 0 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0095-5108 J9 CLIN PERINATOL JI Clin. Perinatol. PD JUN PY 1992 VL 19 IS 2 BP 367 EP 384 PG 18 WC Obstetrics & Gynecology; Pediatrics SC Obstetrics & Gynecology; Pediatrics GA LA269 UT WOS:A1992LA26900009 PM 1352193 ER PT J AU BECK, DE AF BECK, DE TI SIMPLIFIED BALLOON EXPULSION TEST SO DISEASES OF THE COLON & RECTUM LA English DT Note ID CONSTIPATION AB The balloon expulsion test is a simple and inexpensive method to evaluate a patient's ability to expel and retain stool. In conjunction with other methods, it assists in identifying patients with outlet obstruction or incontinence. A simplified method of performing a balloon expulsion test is described. RP BECK, DE (reprint author), USAF,MED CTR,DEPT GEN SURG,WILFORD HALL,LACKLAND AFB,TX 78236, USA. RI Beck, David/A-5503-2011 NR 8 TC 11 Z9 11 U1 0 U2 1 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0012-3706 J9 DIS COLON RECTUM JI Dis. Colon Rectum PD JUN PY 1992 VL 35 IS 6 BP 597 EP 598 DI 10.1007/BF02050542 PG 2 WC Gastroenterology & Hepatology; Surgery SC Gastroenterology & Hepatology; Surgery GA HX710 UT WOS:A1992HX71000014 PM 1587180 ER PT J AU DELEMOS, R YODER, B MCCURNIN, D KINSELLA, J CLARK, R NULL, D AF DELEMOS, R YODER, B MCCURNIN, D KINSELLA, J CLARK, R NULL, D TI THE USE OF HIGH-FREQUENCY OSCILLATORY VENTILATION (HFOV) AND EXTRACORPOREAL MEMBRANE-OXYGENATION (ECMO) IN THE MANAGEMENT OF THE TERM NEAR TERM INFANT WITH RESPIRATORY-FAILURE SO EARLY HUMAN DEVELOPMENT LA English DT Article; Proceedings Paper CT 1ST INTERNATIONAL CONGRESS OF PERINATAL MEDICINE CY NOV 05-08, 1991 CL TOKYO, JAPAN DE VENTILATION; HIGH-FREQUENCY VENTILATION; RESPIRATORY FAILURE; EXTRACORPOREAL MEMBRANE OXYGENATION (ECMO) AB The use of high-frequency oscillatory ventilation (HFOV) was evaluated as a rescue intervention in 122 consecutive infants meeting criteria for extracorporeal membrane oxygenation (ECMO). Fifty-three percent responded to HFOV and never required ECMO, 3/65 died. Infants who ultimately required ECMO had lower aortic and pulmonary peak flow velocities, and lower pulmonary acceleration, circumferential fiber shortening and shortening fraction than those who were successfully managed with HFOV. The use of HFOV with an appropriate strategy decreased the need for ECMO in this patient population. C1 WILFORD HALL USAF MED CTR,DEPT PEDIAT,LACKLAND AFB,TX 78236. RP DELEMOS, R (reprint author), SW FDN BIOMED RES,DEPT PHYSIOL & BIOMED RES,POB 28147,SAN ANTONIO,TX 78284, USA. RI Zhygunov, Dmytro/D-1372-2015 OI Zhygunov, Dmytro/0000-0001-9435-2266 NR 6 TC 24 Z9 24 U1 0 U2 0 PU ELSEVIER SCI IRELAND LTD PI CLARE PA CUSTOMER RELATIONS MANAGER, BAY 15, SHANNON INDUSTRIAL ESTATE CO, CLARE, IRELAND SN 0378-3782 J9 EARLY HUM DEV JI Early Hum. Dev. PD JUN-JUL PY 1992 VL 29 IS 1-3 BP 299 EP 303 DI 10.1016/0378-3782(92)90181-F PG 5 WC Obstetrics & Gynecology; Pediatrics SC Obstetrics & Gynecology; Pediatrics GA JF517 UT WOS:A1992JF51700051 PM 1396256 ER PT J AU RENTSCH, JR STEEL, RP AF RENTSCH, JR STEEL, RP TI CONSTRUCT AND CONCURRENT VALIDATION OF THE ANDREWS AND WITHEY JOB-SATISFACTION QUESTIONNAIRE SO EDUCATIONAL AND PSYCHOLOGICAL MEASUREMENT LA English DT Article ID ORGANIZATIONAL COMMITMENT; EMPLOYEE TURNOVER; META-ANALYSIS AB Two studies evaluating the psychometric properties of Andrews and Withey's (1976) overall job satisfaction questionnaire were performed. Study 1 found that the Andrews and Withey questionnaire correlated significantly with both the Job Descriptive Index (r = .70, p < .001) and the Minnesota Satisfaction Questionnaire (r = .70, p < .001). Study 2 found that the Andrews and Withey satisfaction scale was significantly correlated with job performance, organizational commitment, and turnover intentions. C1 USAF,INST TECHNOL,DEPT COMMUN & ORG SCI,WASHINGTON,DC 20330. RP RENTSCH, JR (reprint author), WRIGHT STATE UNIV,DAYTON,OH 45435, USA. NR 17 TC 26 Z9 26 U1 1 U2 11 PU SAGE PUBLICATIONS INC PI THOUSAND OAKS PA 2455 TELLER RD, THOUSAND OAKS, CA 91320 SN 0013-1644 J9 EDUC PSYCHOL MEAS JI Educ. Psychol. Meas. PD SUM PY 1992 VL 52 IS 2 BP 357 EP 367 DI 10.1177/0013164492052002011 PG 11 WC Psychology, Educational; Mathematics, Interdisciplinary Applications; Psychology, Mathematical SC Psychology; Mathematics GA HY044 UT WOS:A1992HY04400011 ER PT J AU MOELLER, G HUGHES, JJ MANGANO, FA GELORMINI, R TOMLINSON, TL DIPALMA, JA AF MOELLER, G HUGHES, JJ MANGANO, FA GELORMINI, R TOMLINSON, TL DIPALMA, JA TI COMPARISON OF L-HYOSCYAMINE, GLUCAGON, AND PLACEBO FOR AIR-CONTRAST UPPER GASTROINTESTINAL SERIES SO GASTROINTESTINAL RADIOLOGY LA English DT Article DE GASTROINTESTINAL TRACT, EFFECT OF DRUGS; L-HYOSCYAMINE; GLUCAGON; ANTICHOLINERGICS, HYPOTONIC UGI-STUDIES AB Previous studies have compared the use of anticholinergic drugs and glucagon for upper gastrointestinal (UGI) radiography. Many radiologists prefer glucagon because these comparisons showed it to have a shorter duration of action with fewer side effects. L-Hyoscyamine is the levo-rotatory form of atropine with minor adverse side effects. This study compared the effects of glucagon (N = 48), L-hyoscyamine (N = 43), and placebo (N = 45) on gastric and duodenal distension, mucosal coating, and patient tolerance. L-Hyoscyamine provided gastric and duodenal images equal in quality to glucagon. Except for the more frequent reporting of dry mouth With L-hyoscyamine, side effects were not different among the groups. L-Hyoscyamine is an economical alternative to glucagon for hypotonic gastrointestinal radiography. C1 UNIV SO ALABAMA,COLL MED,DIV GASTROENTEROL,MASTIN 400B,2451 FILLINGIM ST,MOBILE,AL 36617. UNIV S FLORIDA,COLL MED,DEPT RADIOL,TAMPA,FL 33612. USAF,MED CTR,DEPT RADIOL,LACKLAND AFB,TX 78236. NR 8 TC 11 Z9 11 U1 0 U2 2 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0364-2356 J9 GASTROINTEST RADIOL PD SUM PY 1992 VL 17 IS 3 BP 195 EP 198 DI 10.1007/BF01888546 PG 4 WC Gastroenterology & Hepatology; Radiology, Nuclear Medicine & Medical Imaging SC Gastroenterology & Hepatology; Radiology, Nuclear Medicine & Medical Imaging GA HQ609 UT WOS:A1992HQ60900003 PM 1612300 ER PT J AU SHOWALTER, DE AF SHOWALTER, DE TI MECHANIZED JUGGERNAUT OR MILITARY ANACHRONISM - HORSES AND THE GERMAN ARMY OF WORLD-WAR-II - DINARDO,R SO HISTORIAN LA English DT Book Review RP SHOWALTER, DE (reprint author), USAF ACAD,COLORADO SPRINGS,CO 80840, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU PHI ALPHA THETA PI ALLENTOWN PA THE HISTORIAN 50 COLLEGE DR, ALLENTOWN, PA 18104-6100 SN 0018-2370 J9 HISTORIAN JI Historian PD SUM PY 1992 VL 54 IS 4 BP 702 EP 703 PG 2 WC History SC History GA JL074 UT WOS:A1992JL07400012 ER PT J AU SHEBILSKE, WL REGIAN, JW ARTHUR, W JORDAN, JA AF SHEBILSKE, WL REGIAN, JW ARTHUR, W JORDAN, JA TI A DYADIC PROTOCOL FOR TRAINING COMPLEX SKILLS SO HUMAN FACTORS LA English DT Note ID PERFORMANCE; ACQUISITION; STRATEGIES AB We tested a dyadic training protocol derived from cognitive and social theories of complex skill acquisition. Forty undergraduates practiced Space Fortress, a video game-like research tool, for 10 sessions of eight practice and two test games. Half of them practiced and tested alone; the others had identical tests but dyadic practice, in which they controlled part of each practice while being interlocked with a partner who controlled the rest. Subjects practiced both parts and their connections by alternating roles and by modeling their partners. Trainer time and resources were half for the dyadic group, and performance was equivalent. We discuss applied and basic implications of this 100% increase in training efficiency. C1 USAF,INTELLIGENT TRAINING BRANCH,LACKLAND AFB,TX 78236. RP SHEBILSKE, WL (reprint author), TEXAS A&M UNIV SYST,DEPT PSYCHOL,COLLEGE STN,TX 77843, USA. NR 21 TC 50 Z9 50 U1 5 U2 9 PU HUMAN FACTORS SOC PI SANTA MONICA PA BOX 1369, SANTA MONICA, CA 90406 SN 0018-7208 J9 HUM FACTORS JI Hum. Factors PD JUN PY 1992 VL 34 IS 3 BP 369 EP 374 PG 6 WC Behavioral Sciences; Engineering, Industrial; Ergonomics; Psychology, Applied; Psychology SC Behavioral Sciences; Engineering; Psychology GA JC059 UT WOS:A1992JC05900009 ER PT J AU RAYMOND, JP GARDNER, RA LAMAR, GE AF RAYMOND, JP GARDNER, RA LAMAR, GE TI CHARACTERIZATION OF RADIATION EFFECTS ON TRENCH-ISOLATED BIPOLAR ANALOG MICROCIRCUIT TECHNOLOGY SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article; Proceedings Paper CT 1ST EUROPEAN CONF ON RADIATION AND ITS EFFECTS ON DEVICES AND SYSTEMS ( RADECS 91 ) CY SEP 09-12, 1991 CL LA GRANDE MOTTE, FRANCE AB Radiation effects on trench-isolated bipolar analog microcircuits have been characterized through measurement of neutron damage, long-term ionizing radiation damage, transient photoresponse and pulsed radiation-induced latchup. The characterization was done to provide basic information on the hardness of the technology for potential system application. The principal means of evaluation was through characterization of process-control and custom test chips. Results test chip characterization were compared to radiation effects characterization of basic microcircuits of identical process technologies. The goal of the characterization was to determine if there were any surprises in the radiation susceptibility. In summary, there are none in the displacement damage, transient photoresponse or radiation-induced latchup. Displacement damage effects are determined by transistor gain degradation. Transient photoresponse is dominated by the substrate photocurrent. The presence of deep trenches does not prevent latchup but latchup can be mitigated by the process doping profile. There were some questions remaining associated with the long-term ionization radiation damage. Test chip data were not completely consistent and some further investigation is necessary. C1 CS DRAPER LABS,CAMBRIDGE,MA. USAF,BALLIST MISSILE ORG,SAN BERNARDINO,CA. RP RAYMOND, JP (reprint author), MISSION RES CORP,SAN DIEGO,CA, USA. NR 6 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 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD JUN PY 1992 VL 39 IS 3 BP 405 EP 412 DI 10.1109/23.277527 PN 1 PG 8 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA JA320 UT WOS:A1992JA32000016 ER PT J AU RUCK, DW ROGERS, SK KABRISKY, M MAYBECK, PS OXLEY, ME AF RUCK, DW ROGERS, SK KABRISKY, M MAYBECK, PS OXLEY, ME TI COMPARATIVE-ANALYSIS OF BACKPROPAGATION AND THE EXTENDED KALMAN FILTER FOR TRAINING MULTILAYER PERCEPTRONS SO IEEE TRANSACTIONS ON PATTERN ANALYSIS AND MACHINE INTELLIGENCE LA English DT Letter DE ARTIFICIAL NEURAL NETWORKS; BACKPROPAGATION; EXTENDED KALMAN FILTERING; MULTILAYER PERCEPTRONS; PATTERN RECOGNITION AB This paper examines the relationship between backpropagation and extended Kalman filtering for training multilayer perceptrons. These two techniques are compared theoretically and empirically using sensor imagery. Backpropagation is a technique from neural networks for assigning weights in a multilayer perceptron. An extended Kalman filter can also be used for this purpose. A brief review of the multilayer perceptron and these two training methods is provided. Then, it is shown that backpropagation is a degenerate form of the extended Kalman filter. The training rules are compared in two examples: an image classification problem using laser radar doppler imagery and a target detection problem using absolute range images. In both examples, the backpropagation training algorithm is shown to be three orders of magnitude less costly than the extended Kalman filter algorithm in terms of a number of floating-point operations. RP RUCK, DW (reprint author), USAF,INST TECHNOL,SCH ENGN,WRIGHT PATTERSON AFB,OH 45433, USA. NR 21 TC 48 Z9 50 U1 1 U2 1 PU IEEE COMPUTER SOC PI LOS ALAMITOS PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1264 SN 0162-8828 J9 IEEE T PATTERN ANAL JI IEEE Trans. Pattern Anal. Mach. Intell. PD JUN PY 1992 VL 14 IS 6 BP 686 EP 691 DI 10.1109/34.141559 PG 6 WC Computer Science, Artificial Intelligence; Engineering, Electrical & Electronic SC Computer Science; Engineering GA HX546 UT WOS:A1992HX54600010 ER PT J AU MARDER, BM CLARK, MC BACON, LD HOFFMAN, JM LEMKE, RW COLEMAN, PD AF MARDER, BM CLARK, MC BACON, LD HOFFMAN, JM LEMKE, RW COLEMAN, PD TI THE SPLIT-CAVITY OSCILLATOR - A HIGH-POWER E-BEAM MODULATOR AND MICROWAVE SOURCE SO IEEE TRANSACTIONS ON PLASMA SCIENCE LA English DT Review AB This paper describes a compact device, called a split-cavity oscillator, whose self-excited oscillating electromagnetic field converts a large-area steady electron beam into one that is highly density modulated. It does this in a short beam travel length, easing both space-charge and pinching limitations. Thus high currents are possible without requiring a magnetic guide field. Methods for converting the modulated output beam into high-power microwaves are discussed, as are ways to phase-lock several oscillators together. Analytic theory, numerical simulations, and experiments describing the device are presented. C1 SUPERCONDUCTING SUPERCOLLIDER,WAXAHACHIE,TX. USAF,PHILLIPS LAB,ALBUQUERQUE,NM. RP MARDER, BM (reprint author), SANDIA NATL LABS,DIV MICROWAVE PHYS,ALBUQUERQUE,NM 87185, USA. NR 25 TC 51 Z9 63 U1 1 U2 5 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0093-3813 J9 IEEE T PLASMA SCI JI IEEE Trans. Plasma Sci. PD JUN PY 1992 VL 20 IS 3 BP 312 EP 331 DI 10.1109/27.142833 PG 20 WC Physics, Fluids & Plasmas SC Physics GA JA870 UT WOS:A1992JA87000025 ER PT J AU HURLEY, LD WESTFALL, CT SHORE, JW AF HURLEY, LD WESTFALL, CT SHORE, JW TI PROPHYLACTIC USE OF ANTIBIOTICS IN OCULOPLASTIC SURGERY SO INTERNATIONAL OPHTHALMOLOGY CLINICS LA English DT Article RP HURLEY, LD (reprint author), WILFORD HALL USAF MED CTR,DEPT OPHTHALMOL,LACKLAND AFB,TX 78236, USA. NR 0 TC 9 Z9 9 U1 0 U2 0 PU LITTLE BROWN CO PI BOSTON PA 34 BEACON STREET, BOSTON, MA 02108-1493 SN 0020-8167 J9 INT OPHTHALMOL CLIN JI Int. Ophthalmol. Clin. PD SUM PY 1992 VL 32 IS 3 BP 165 EP 178 DI 10.1097/00004397-199203230-00013 PG 14 WC Ophthalmology SC Ophthalmology GA JG722 UT WOS:A1992JG72200012 PM 1639598 ER PT J AU MALAS, JC SEETHARAMAN, V AF MALAS, JC SEETHARAMAN, V TI USING MATERIAL BEHAVIOR MODELS TO DEVELOP PROCESS-CONTROL STRATEGIES SO JOM-JOURNAL OF THE MINERALS METALS & MATERIALS SOCIETY LA English DT Article AB Advances in material behavior modeling have enabled the explicit incorporation of material phenomena into process design and control methodologies. A new approach to material behavior modeling, in which stability analysis has been combined with the analysis of activation energy, can be used to identify processing regimes within which the material behavior is essentially deterministic and is amenable to process control. This articles illustrates the application of this dynamic material modeling approach through the example of deformation processing of a gamma-TiAl alloy. Additionally, a new control-system design strategy explicitly based on the knowledge of the state of the material under hot-deformation conditions is explored. C1 UNIVERSAL ENERGY SYST,DIV MAT PROC & MFG,DAYTON,OH. RP MALAS, JC (reprint author), WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH, USA. NR 15 TC 42 Z9 49 U1 2 U2 5 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 JUN PY 1992 VL 44 IS 6 BP 8 EP 13 PG 6 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Mineralogy; Mining & Mineral Processing SC Materials Science; Metallurgy & Metallurgical Engineering; Mineralogy; Mining & Mineral Processing GA HY415 UT WOS:A1992HY41500003 ER PT J AU YAMADA, T BUNKER, S MOSS, M AF YAMADA, T BUNKER, S MOSS, M TI NUMERICAL SIMULATIONS OF ATMOSPHERIC TRANSPORT AND DIFFUSION OVER COASTAL COMPLEX TERRAIN SO JOURNAL OF APPLIED METEOROLOGY LA English DT Article ID TURBULENCE CLOSURE-MODEL AB The purpose of this study was to demonstrate the feasibility of operating the three-dimensional atmospheric models HOTMAC (higher-order turbulence model for atmospheric circulation) and RAPTAD (random puff transport and diffusion) to forecast the transport and dispersion of airborne hazardous materials at Vandenberg Air Force Base, California (VAFB). HOTMAC provides three-dimensional distributions of the mean and turbulence variables to RAPTAD, which simulates transport and diffusion of airborne materials. To test the HOTMAC-RAPTAD model results, data were selected from the Mountain Iron (MI) diffusion experiments that were conducted at VAFB during 1965 and 1966. The data included surface winds, upper-air soundings, and ground-level exposure values of fluorescent particles. Conclusions of this study include: HOTMAC and RAPTAD predictions of the ground-level exposure values were as good as those obtained by diagnostic and empirical models and were the best practical solution where wind data were not available. The HOTMAC and RAPTAD modeling system would be a useful addition to enhance current emergency response management capabilities. C1 USAF, ENGN & SERV CTR, TYNDALL AFB, FL USA. LOS ALAMOS NATL LAB, LOS ALAMOS, NM 87544 USA. NR 15 TC 26 Z9 27 U1 0 U2 1 PU AMER METEOROLOGICAL SOC PI BOSTON PA 45 BEACON ST, BOSTON, MA 02108-3693 USA SN 0894-8763 J9 J APPL METEOROL JI J. Appl. Meteorol. PD JUN PY 1992 VL 31 IS 6 BP 565 EP 578 DI 10.1175/1520-0450(1992)031<0565:NSOATA>2.0.CO;2 PG 14 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA HV480 UT WOS:A1992HV48000005 ER PT J AU FIEDLER, FE MURPHY, SE GIBSON, FW AF FIEDLER, FE MURPHY, SE GIBSON, FW TI INACCURATE REPORTING AND INAPPROPRIATE VARIABLES - A REPLY SO JOURNAL OF APPLIED PSYCHOLOGY LA English DT Note ID STRESS; INTELLIGENCE; PERFORMANCE; PREDICTION; EXPERIENCE; BEHAVIOR AB In an article in the Journal of Applied Psychology, Vecchio (1990) purported to test cognitive resource theory (Fiedler, 1986; Fiedler & Garcia, 1987). We present evidence that Vecchio's article seriously misrepresented previous work on cognitive resource theory and also contained several flaws in methodology that call into question his conclusions regarding the validity of cognitive resource theory C1 USAF ACAD,COLORADO SPRINGS,CO 80840. RP FIEDLER, FE (reprint author), UNIV WASHINGTON,DEPT PSYCHOL,ORG RES GRP,NI-25,SEATTLE,WA 98195, USA. NR 25 TC 1 Z9 1 U1 0 U2 1 PU AMER PSYCHOLOGICAL ASSOC PI WASHINGTON PA 750 FIRST ST NE, WASHINGTON, DC 20002-4242 SN 0021-9010 J9 J APPL PSYCHOL JI J. Appl. Psychol. PD JUN PY 1992 VL 77 IS 3 BP 372 EP 374 PG 3 WC Psychology, Applied; Management SC Psychology; Business & Economics GA HY002 UT WOS:A1992HY00200015 PM 1601826 ER PT J AU JORDAN, DL PAGE, BI AF JORDAN, DL PAGE, BI TI SHAPING FOREIGN-POLICY OPINIONS - THE ROLE OF TV-NEWS SO JOURNAL OF CONFLICT RESOLUTION LA English DT Article ID PUBLIC-OPINION AB Increasing evidence of connections between public opinion and U.S. foreign policy-making suggests the importance of determining what influences shape the collective foreign policy preferences of the public. A data set involving repeated measures of public opinion and content analyses of TV news broadcasts before and between opinion surveys is used to estimate the impact of news stories from various sources on opinion. Reported statements and actions by media commentators, allegedly nonpartisan "experts," opposition party figures, and popular (but not unpopular) presidents have the largest estimated effects, while the impact of other sources is negligible. Despite ideas about the "two presidencies" and the like, the process of shaping opinion on foreign policy does not appear substantially different from that affecting domestic policy preferences. Some implications for the democratic control of foreign policy are discussed. C1 NORTHWESTERN UNIV,EVANSTON,IL 60201. RP JORDAN, DL (reprint author), USAF ACAD,COLORADO SPRINGS,CO 80840, USA. NR 22 TC 34 Z9 34 U1 3 U2 15 PU SAGE PUBLICATIONS INC PI THOUSAND OAKS PA 2455 TELLER RD, THOUSAND OAKS, CA 91320 SN 0022-0027 J9 J CONFLICT RESOLUT JI J. Confl. Resolut. PD JUN PY 1992 VL 36 IS 2 BP 227 EP 241 DI 10.1177/0022002792036002001 PG 15 WC International Relations; Political Science SC International Relations; Government & Law GA HY466 UT WOS:A1992HY46600001 ER PT J AU CUNNINGHAM, CJ SENIA, ES AF CUNNINGHAM, CJ SENIA, ES TI A 3-DIMENSIONAL STUDY OF CANAL CURVATURES IN THE MESIAL ROOTS OF MANDIBULAR MOLARS SO JOURNAL OF ENDODONTICS LA English DT Article ID INVITRO METHOD; MORPHOLOGY; INSTRUMENTATION; ANATOMY AB The degree and configuration of canal curvature was studied in the mesial roots of 100 randomly selected mandibular first and second molars. The teeth were radiographed in buccolingual (clinical) and mesiodistal (proximal) directions with #8 K files in place. One hundred percent of the specimens demonstrated curvature in both views. No correlation in degree of curvature was found to exist between the clinical and proximal views. Secondary curvature, in a direction opposite to that of the principle curve, was seen more frequently in the proximal view. In the proximal view, canals exhibited greater mean curvature than in the clinical view 38% of the time. Weine type II morphology (two canals, one foramen) demonstrated the greatest range in canal curvature when viewed from the proximal. Coronal flaring with Canal Master rotary instruments to a level just coronal to the curve significantly reduced the severity of curvatures in both views for most cases. C1 USAF,MED CTR,LACKLAND AFB,TX 78236. USA,ADV EDUC PROGRAM ENDODONT,WASHINGTON,DC 20438. RP CUNNINGHAM, CJ (reprint author), UNIV TEXAS,HLTH SCI CTR,DEPT ENDODONT,SAN ANTONIO,TX 78284, USA. NR 19 TC 63 Z9 76 U1 0 U2 2 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 1992 VL 18 IS 6 BP 294 EP 300 DI 10.1016/S0099-2399(06)80957-X PG 7 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA HW973 UT WOS:A1992HW97300007 PM 1402588 ER PT J AU TUPES, EC CHRISTAL, RE AF TUPES, EC CHRISTAL, RE TI RECURRENT PERSONALITY-FACTORS BASED ON TRAIT RATINGS SO JOURNAL OF PERSONALITY LA English DT Article AB Intercorrelations among ratings on 35 personality traits, selected as representative of the personality domain, were obtained for eight samples. These samples differed in length of acquaintanceship from 3 days to more than a year; in kind of acquaintanceship from assessment programs in a military training course to a fraternity house situation; in type of subject from airmen with only a high-school education to male and female undergraduate students to first-year graduate students; and in type of rater from very naive persons to clinical psychologists and psychiatrists with years of experience in the evaluation of personality. Centroid or multiple-group factors were extracted and rotated orthogonally to simple structure. For one study, an independent solution was obtained in which analytic rotations were accomplished on an IBM 650 computer using Kaiser's normal varimax criterion. Five fairly strong and recurrent factors emerged from each analysis, labeled as (a) Surgency, (b) Agreeableness, (c) Dependability, (d) Emotional Stability, and (e) Culture. C1 USAF,WASHINGTON,DC 20330. NR 18 TC 176 Z9 178 U1 4 U2 42 PU DUKE UNIV PRESS PI DURHAM PA BOX 90660, DURHAM, NC 27708-0660 SN 0022-3506 J9 J PERS JI J. Pers. PD JUN PY 1992 VL 60 IS 2 BP 225 EP 251 DI 10.1111/j.1467-6494.1992.tb00973.x PG 27 WC Psychology, Social SC Psychology GA JB395 UT WOS:A1992JB39500004 PM 1635043 ER PT J AU BAKER, SP CONROY, C JOHNSTON, JJ BENDER, TR CATTLEDGE, G CHU, GST DEJOY, D DUFFY, R EISENBERG, WM ELISBURG, D FELL, JC FINE, LJ GERBERICH, SG KINNEY, JA KRAUS, JF MARINE, W MCDOUGALL, V POLLACK, E REEVE, GR ROETTGER, RH RUNYAN, CW SEYMOUR, T SMITH, GS SPIELER, E STALLONES, L TRAVNICK, J WEEKS, JL ZWERLING, C FENLEY, MA AF BAKER, SP CONROY, C JOHNSTON, JJ BENDER, TR CATTLEDGE, G CHU, GST DEJOY, D DUFFY, R EISENBERG, WM ELISBURG, D FELL, JC FINE, LJ GERBERICH, SG KINNEY, JA KRAUS, JF MARINE, W MCDOUGALL, V POLLACK, E REEVE, GR ROETTGER, RH RUNYAN, CW SEYMOUR, T SMITH, GS SPIELER, E STALLONES, L TRAVNICK, J WEEKS, JL ZWERLING, C FENLEY, MA TI OCCUPATIONAL INJURY PREVENTION SO JOURNAL OF SAFETY RESEARCH LA English DT Article C1 CALIF PUBL HLTH FDN,BERKELEY,CA. CTR DIS CONTROL,NIOSH,DIV SAFETY RES,MORGANTOWN,WV. CALIF OCCUPAT SAFETY & HLTH ADM,SAN FRANCISCO,CA. UNIV GEORGIA,ATHENS,GA 30602. AFL CIO,CLC,INT ASSOC FIREFIGHTERS,WASHINGTON,DC 20006. US BUR LABOR STAT,DEPT LABOR,WASHINGTON,DC 20214. CTR PROTECT WORKERS RIGHTS,WASHINGTON,DC. NATL HIGHWAY TRAFFIC SAFETY ADM,WASHINGTON,DC. CTR DIS CONTROL,NIOSH,DIV SURVEILLANCE HAZARD EVALUAT & FIELD STUDIES,CINCINNATI,OH. UNIV MINNESOTA,MINNEAPOLIS,MN 55455. NATL SAFE WORKPL INST,CHICAGO,IL. UNIV CALIF LOS ANGELES,LOS ANGELES,CA 90024. UNIV COLORADO,DENVER,CO 80202. INT BROTHERHOOD TEAMSTERS,WASHINGTON,DC. GEORGE WASHINGTON UNIV,ROCKVILLE,MD. FORD MOTOR CO,DEARBORN,MI 48121. UNIV N CAROLINA,CHAPEL HILL,NC 27514. OCCUPAT SAFETY & HLTH ADM,WASHINGTON,DC. JOHNS HOPKINS UNIV,BALTIMORE,MD 21218. W VIRGINIA UNIV,COLL LAW,MORGANTOWN,WV 26506. COLORADO STATE UNIV,FT COLLINS,CO 80523. KEMPER INSURANCE,LONG GROVE,IL. LABORERS HLTH & SAFETY FUND N AMERICA,WASHINGTON,DC. MACRO INT INC,ATLANTA,GA. USAF,MED CTR,LACKLAND AFB,TX 78236. UNIV IOWA,IOWA CITY,IA 52242. RP BAKER, SP (reprint author), JOHNS HOPKINS UNIV,BALTIMORE,MD 21218, USA. NR 0 TC 10 Z9 10 U1 1 U2 3 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0022-4375 J9 J SAFETY RES JI J. Saf. Res. PD SUM PY 1992 VL 23 IS 2 BP 129 EP 133 PG 5 WC Ergonomics; Public, Environmental & Occupational Health; Social Sciences, Interdisciplinary; Transportation SC Engineering; Public, Environmental & Occupational Health; Social Sciences - Other Topics; Transportation GA HV253 UT WOS:A1992HV25300011 ER PT J AU LAUERMAN, WC BRADFORD, DS OGILVIE, JW TRANSFELDT, EE AF LAUERMAN, WC BRADFORD, DS OGILVIE, JW TRANSFELDT, EE TI RESULTS OF LUMBAR PSEUDOARTHROSIS REPAIR SO JOURNAL OF SPINAL DISORDERS LA English DT Article DE LUMBAR PSEUDOARTHROSIS; FAILED BACK SURGERY; REPEAT LUMBAR SPINE SURGERY AB Forty patients underwent 47 procedures for repair of a lumbar pseudarthrosis at the University of Minnesota. Twin Cities Scoliosis Center between 1973 and 1986. Forty-three procedures in 36 patients with a minimum follow-up of 2 years were reviewed. Symptoms at the time of surgery included back pain (100%), leg pain (61%), subjective neurologic symptoms (49%), and thigh pain (35%). The diagnosis was made most commonly on the basis of plain radiographs (70%). In 38 cases, posterolateral fusion was performed, using segmental sublaminar wiring in 37%, a variable screw plate in 29%, Harrington compression rods in 16%, and no implant in 18%. Anterior interbody fusion was performed in six cases, including one combined fusion. Follow-up averaged 4.4 years. Solid fusion was achieved in 49% of cases. Eighty-six percent of patients continued to have low-back pain. Clinical outcomes were graded as excellent in 7%, good in 35%, fair in 9%, and failure in 49%. Significantly improved results were seen in patients in whom a solid fusion was obtained (p < 0.005). in patients who had undergone only one prior surgery on the lumbar spine (p < 0.01). and in patients in whom the initial fusion had been performed for spondylolisthesis rather than a primarily degenerative disorder (p < 0.025). A trend toward better results was seen in cases in which the patient did not complain of leg pain preoperatively, in which a Workers' Compensation claim was not involved. and in which a prior attempt at pseudarthrosis repair had not been performed. Repair of pseudarthrosis after lumbar spine fusion should be approached with caution because the results of repair are frequently disappointing. The outcome can be improved with careful patient selection and fusion technique. RP LAUERMAN, WC (reprint author), WILFORD HALL USAF MED CTR,SGHSB,DEPT ORTHOPAED,LACKLAND AFB,TX 78236, USA. NR 0 TC 30 Z9 30 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 0895-0385 J9 J SPINAL DISORD JI J. Spinal Disord. PD JUN PY 1992 VL 5 IS 2 BP 149 EP 157 DI 10.1097/00002517-199206000-00001 PG 9 WC Clinical Neurology; Orthopedics SC Neurosciences & Neurology; Orthopedics GA HU732 UT WOS:A1992HU73200001 PM 1535004 ER PT J AU LAUERMAN, WC PLATENBERG, RC CAIN, JE DEENEY, VFX AF LAUERMAN, WC PLATENBERG, RC CAIN, JE DEENEY, VFX TI AGE-RELATED DISK DEGENERATION - PRELIMINARY-REPORT OF A NATURALLY-OCCURRING BABOON MODEL SO JOURNAL OF SPINAL DISORDERS LA English DT Article DE DISK DEGENERATION; EXPERIMENTAL SPONDYLOSIS AB Anteroposterior and lateral radiographs of 126 adult baboons were reviewed. The mean age was 15.7 years (range 6-30 years). Evidence of disk degeneration, to include disk-space narrowing, osteophyte formation, endplate changes, and facet joint arthropathy, was noted, and a grading scale, grades 0-3, was used to assign each animal an overall grade for degree of disk degeneration. Lateral radiographs were measured in the area of maximal sagittal plane curvatures. Radiographic review demonstrated a strongly positive correlation between the age of the baboons and the degree of degenerative change (p < 0.0001), between the degree of kyphosis and the degree of degenerative change (p < 0.0001), and between the age of the animal and the degree of kyphosis (p < 0.001). This pilot study demonstrates plain radiographic confirmation of a naturally occurring primate model of disk degeneration, the first such model described, and is the basis for further investigation into magnetic resonance imaging and histopathologic confirmation of this model. RP LAUERMAN, WC (reprint author), WILFORD HALL USAF MED CTR,SGHSB,DEPT ORTHOPED,LACKLAND AFB,TX 78236, USA. NR 0 TC 21 Z9 23 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 0895-0385 J9 J SPINAL DISORD JI J. Spinal Disord. PD JUN PY 1992 VL 5 IS 2 BP 170 EP 174 DI 10.1097/00002517-199206000-00004 PG 5 WC Clinical Neurology; Orthopedics SC Neurosciences & Neurology; Orthopedics GA HU732 UT WOS:A1992HU73200004 PM 1606375 ER PT J AU SHATTUCK, DA AF SHATTUCK, DA TI BATS, BALLS AND BOOKS - BASEBALL AND HIGHER-EDUCATION FOR WOMEN AT 3 EASTERN WOMENS COLLEGES, 1866-1891 SO JOURNAL OF SPORT HISTORY LA English DT Article RP SHATTUCK, DA (reprint author), USAF ACAD,DEPT HIST,COLORADO SPRINGS,CO 80840, USA. NR 36 TC 2 Z9 2 U1 0 U2 0 PU NORTH AMER SOC SPORT HISTORY PI UNIVERSITY PK PA PENN STATE UNIV 101 WHITE BLDG, UNIVERSITY PK, PA 16802 SN 0094-1700 J9 J SPORT HIST JI J. Sport Hist. PD SUM PY 1992 VL 19 IS 2 BP 91 EP 109 PG 19 WC History Of Social Sciences SC Social Sciences - Other Topics GA JX311 UT WOS:A1992JX31100001 ER PT J AU MCHUGH, CP AF MCHUGH, CP TI DISTRIBUTIONAL RECORDS FROM THE UNITED-STATES AIR-FORCE OVITRAPPING PROGRAM - 1991 SO JOURNAL OF THE AMERICAN MOSQUITO CONTROL ASSOCIATION LA English DT Note ID AEDES-TRISERIATUS; ALBOPICTUS; AEGYPTI AB During 1991, ovitrapping was conducted by 37 U.S. Air Force installations. Sixteen installations were positive for Aedes albopictus. The number (449) and percent (21.5%) of Ae. albopictus-positive ovipaddles was almost 4 times that of the previous year. The collections of Ae. albopictus at Columbus Air Force Base (AFB), MS, and Shaw AFB, SC, are new records for Lowndes and Sumter counties, respectively. Nine installations were positive for Ae. aegypti; 21 were positive for Ae. triseriatus. RP MCHUGH, CP (reprint author), OCCUPAT & ENVIRONM HLTH DIRECTORATE,ARMSTRONG LAB,BROOKS AFB,TX 78235, USA. NR 3 TC 8 Z9 8 U1 1 U2 2 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 JUN PY 1992 VL 8 IS 2 BP 198 EP 199 PG 2 WC Entomology SC Entomology GA JB810 UT WOS:A1992JB81000019 PM 1431865 ER PT J AU JENNINGS, PB MATHEY, WS EHLER, WJ AF JENNINGS, PB MATHEY, WS EHLER, WJ TI INTERMITTENT GASTRIC DILATATION AFTER GASTROPEXY IN A DOG SO JOURNAL OF THE AMERICAN VETERINARY MEDICAL ASSOCIATION LA English DT Article DE CANINE SPECIES; SURGERY; GASTRIC DILATATION; ADHESIONS ID VOLVULUS AB Gastroperitoneal adhesions, which developed after tube gastrostomy in a 3-year-old dog, caused an inverted L configuration of the pyloric antrum and duodenum, resulting in periodic episodes of gastric dilatation. The dog had undergone tube gastrostomy for treatment of gastric dilatation volvulus, but gastropexy adhesions broke down 27 months later, necessitating a second pexy procedure. Adhesions then developed, constricting gastric outflow and trapping gas in the stomach and proximal duodenum. When the ventral row of adhesions was surgically dissected, the angle between the pyloric antrum and the duodenum was straightened, facilitating flow of digesta. Gastropexy rarely causes the degree of adhesion formation and the complications reported in this dog. C1 WILFORD HALL USAF MED CTR,CLIN INVEST DIRECTORATE,LACKLAND AFB,TX 78236. RP JENNINGS, PB (reprint author), US DEPT DEF,MIL WORKING DOG AGCY,DIV VET,BLDG 7595,LACKLAND AFB,TX 78236, USA. NR 8 TC 13 Z9 13 U1 0 U2 5 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 JUN 1 PY 1992 VL 200 IS 11 BP 1707 EP 1708 PG 2 WC Veterinary Sciences SC Veterinary Sciences GA HW639 UT WOS:A1992HW63900022 PM 1624353 ER PT J AU TROMBLY, JF YEOMANS, ER LESTER, JW AF TROMBLY, JF YEOMANS, ER LESTER, JW TI DIAGNOSIS OF PHOCOMELIA BY TRANSVAGINAL SONOGRAPHY SO JOURNAL OF ULTRASOUND IN MEDICINE LA English DT Article ID ROBERTS SYNDROME; SC PHOCOMELIA C1 PRESBYTERIAN UNIV HOSP,PITTSBURGH,PA. WILFORD HALL USAF MED CTR,DEPT MACROMOLEC CHEM,LACKLAND AFB,TX 78236. WILFORD HALL USAF MED CTR,DEPT OBSTET & GYNECOL,LACKLAND AFB,TX 78236. PITTSBURGH NMR INST,PITTSBURGH,PA. NR 6 TC 0 Z9 0 U1 0 U2 0 PU AMER INST ULTRASOUND MEDICINE PI LAUREL PA SUBSCRIPTION DEPT, 14750 SWEITZER LANE, STE 100, LAUREL, MD 20707-5906 SN 0278-4297 J9 J ULTRAS MED JI J. Ultrasound Med. PD JUN PY 1992 VL 11 IS 6 BP 309 EP 311 PG 3 WC Acoustics; Radiology, Nuclear Medicine & Medical Imaging SC Acoustics; Radiology, Nuclear Medicine & Medical Imaging GA KY021 UT WOS:A1992KY02100014 PM 1608096 ER PT J AU HUBBARD, GB SOIKE, KF BUTLER, TM CAREY, KD DAVIS, H BUTCHER, WI GAUNTT, CJ AF HUBBARD, GB SOIKE, KF BUTLER, TM CAREY, KD DAVIS, H BUTCHER, WI GAUNTT, CJ TI AN ENCEPHALOMYOCARDITIS VIRUS EPIZOOTIC IN A BABOON COLONY SO LABORATORY ANIMAL SCIENCE LA English DT Article ID REPRODUCTIVE FAILURE; INFECTION; PIGS AB Approximately 80 baboon deaths were caused by encephalomyocarditis virus (EMCV) infection in a 3060 member research and production colony. The epizootic extended over a 9-month period and occurred in baboons ranging from 1 day to 22 years of age. Acute death was the most common history. When clinical disease was detected, it was characterized by labored respiration associated with acute congestive heart failure. The salient necropsy findings were pulmonary congestion and edema, hydropericardium, hydrothorax, ascites, lymph node and splenic hypertrophy, and pale white-to-tan mottled hearts. The most significant histologic lesion was nonsuppurative necrotizing myocarditis. Placental infection with fetal loss occurred. Diagnosis was confirmed by light microscopy, transmission electron microscopy, virus culture, and serology. Rarely, EMCV-induced antibody persisted in surviving baboons for more than 24 months. EMCV-infected feral rats were the probable source of the virus and their control stopped the epizootic. No EMCV neutralizing antibody was detected in colony support personnel or chimpanzees. C1 TULANE REG PRIMATE RES CTR,COVINGTON,LA 70433. ARMSTRONG LAB,BROOKS AFB,TX 78235. UNIV TEXAS,HLTH SCI CTR,SAN ANTONIO,TX 78284. RP HUBBARD, GB (reprint author), SW FDN BIOMED RES,SAN ANTONIO,TX 78228, USA. FU NCRR NIH HHS [RR01104-10, RR01104-8, RR01104-9] NR 19 TC 54 Z9 56 U1 2 U2 4 PU AMER ASSOC LABORATORY ANIMAL SCIENCE PI CORDOVA PA 70 TIMBERCREEK DR, SUITE 5, CORDOVA, TN 38018 SN 0023-6764 J9 LAB ANIM SCI JI Lab. Anim. Sci. PD JUN PY 1992 VL 42 IS 3 BP 233 EP 239 PG 7 WC Veterinary Sciences; Zoology SC Veterinary Sciences; Zoology GA JA579 UT WOS:A1992JA57900002 PM 1320151 ER PT J AU HONTS, CR PERRY, MV AF HONTS, CR PERRY, MV TI POLYGRAPH ADMISSIBILITY - CHANGES AND CHALLENGES SO LAW AND HUMAN BEHAVIOR LA English DT Article ID PHYSIOLOGICAL DETECTION; GUILTY KNOWLEDGE; LIE DETECTION; DECEPTION; COUNTERMEASURES; ACCURACY AB Polygraph tests are psychological tests that are widely applied in the criminal justice system, but they are rarely administered or studied by psychologists. Two recent federal appeals court decisions may have opened the door to the admissibility of polygraph tests by displacing the long controlling Frye standard. However, these courts have also raised a number of challenges that must be overcome before polygraph tests will be regularly admitted into evidence. We examined the logic of these two recent decisions and the challenges they raise, and we found those challenges to be significant and perhaps daunting. Many of the challenges facing polygraph arise from poor training and a lack of standardization in the polygraph profession. We consider some potential solutions, but the outlook for change in the polygraph community is dim unless it is forced by the courts or by legislation. Polygraph tests are also challenged by potentially effective countermeasures, and there presently are no easy solutions to those problems. Increased activity and interest are needed from the scientific community if the general situation is to improve. C1 USAF,JUDGE ADVOCATE GEN DEPT,WASHINGTON,DC 20330. RP HONTS, CR (reprint author), UNIV N DAKOTA,DEPT PSYCHOL,7187 UNIV STN,GRAND FORKS,ND 58202, USA. NR 59 TC 30 Z9 30 U1 5 U2 11 PU PLENUM PUBL CORP PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 SN 0147-7307 J9 LAW HUMAN BEHAV JI Law Hum. Behav. PD JUN PY 1992 VL 16 IS 3 BP 357 EP 379 DI 10.1007/BF01044774 PG 23 WC Law; Psychology, Social SC Government & Law; Psychology GA HV779 UT WOS:A1992HV77900007 ER PT J AU SHARP, JR AF SHARP, JR TI PEER-REVIEW - DETERMINING WHATS BEST FOR PATIENTS BY PROFESSIONAL SELF-ASSESSMENT SO MILITARY MEDICINE LA English DT Article AB Many influences outside of physician control have begun to undermine traditional physician autonomy. Studies of physician practices reveal differences not based on patient case mix alone, but on variations in decisions and lack of intra-physician accountability. Failure of physicians to be accountable to each other is related to inadequate due process understanding, fear of legal recriminations from peers, and a traditional long-standing history of individuality and accountability. The malpractice crisis and the advent of a National Practitioner Data Bank of physicians whose privileges or licenses have been modified serves as an impetus to rebuild accountability into a new emphasis on peer review based on optimum patient-focused outcome. To get physician buy-in, a five-step process is described which is separate from professional review of privileges and is seen as collegial, educational, and patient focused. RP SHARP, JR (reprint author), WILFORD HALL USAF MED CTR,HOSP SERV,SAN ANTONIO,TX 78236, 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 JUN PY 1992 VL 157 IS 6 BP 311 EP 314 PG 4 WC Medicine, General & Internal SC General & Internal Medicine GA HY168 UT WOS:A1992HY16800015 PM 1620401 ER PT J AU GEARY, JM SESSIONS, R DUNEMAN, DC AF GEARY, JM SESSIONS, R DUNEMAN, DC TI INFRARED PRESENSITIZATION PHOTOGRAPHY - FILM COMPARISON SO OPTICAL ENGINEERING LA English DT Article DE INFRARED PHOTOGRAPHY; FILM PRESENSITIZATION; PHOTOGRAPHIC FILM COMPARISONS; FILM CHARACTERISTIC CURVES; INFRARED IMAGING AB An investigation was made of five common 35-mm black and white Kodak films showing their relative sensitivity to the IR presensitization photographic effect. The basis of comparison was the density versus IR energy (DIRE) curve. It was found that fine-grain films are more sensitive than coarse-grain films to the presensitization. C1 USAF,WEAP LAB,KIRTLAND AFB,NM 87117. RP GEARY, JM (reprint author), SWALES & ASSOCIATES INC,5050 POWDER MILL RD,BELTSVILLE,MD 20705, USA. NR 8 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 JUN PY 1992 VL 31 IS 6 BP 1362 EP 1368 DI 10.1117/12.56187 PG 7 WC Optics SC Optics GA HY192 UT WOS:A1992HY19200028 ER PT J AU PARANKA, MS WALSH, WF STANCOMBE, BB AF PARANKA, MS WALSH, WF STANCOMBE, BB TI SURFACTANT LAVAGE IN A PIGLET MODEL OF MECONIUM ASPIRATION SYNDROME SO PEDIATRIC RESEARCH LA English DT Article ID FAILURE AB Meconium aspiration continues to be a major cause of morbidity and mortality in newborn infants and is one of the most common indications for extracorporeal membrane oxygenation. Lab studies have suggested that meconium inactivates surfactant and displaces surfactant from the alveolar surface. A recent report has suggested a clinical role for surfactant therapy in human infants with meconium aspiration. We evaluated the effect of surfactant (Survanta) lavage on a piglet model of meconium aspiration. Meconium pneumonitis was created by administration of 4 mL/kg of a 20% slurry of human meconium via endotracheal tube. Twenty-four newborn piglets were then randomly assigned to one of three groups: 1) suction only (n = 7), 2) saline lavage (n = 5), or 3) surfactant lavage (n = 7). Five piglets were excluded from analysis due to death from pneumothorax during meconium administration (n = 3), death from pneumothorax during saline lavage (n = 1), and death from pneumothorax during surfactant lavage (n = 1). The surfactant group had a statistically significant (p < 0.05) improvement in arterial to alveolar oxygen ratio gradient versus both control groups for the first 3 h. The oxygenation index was statistically significant versus the suction only group at 1, 3, and 4 h. Surfactant lavage of meconium aspiration in piglets results in short-term improvement of oxygenation and warrants further study. RP PARANKA, MS (reprint author), WILFORD HALL USAF MED CTR,DEPT PEDIAT SGHP,LACKLAND AFB,TX 78236, USA. NR 10 TC 77 Z9 80 U1 0 U2 1 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0031-3998 J9 PEDIATR RES JI Pediatr. Res. PD JUN PY 1992 VL 31 IS 6 BP 625 EP 628 DI 10.1203/00006450-199206000-00017 PG 4 WC Pediatrics SC Pediatrics GA HV266 UT WOS:A1992HV26600017 PM 1635826 ER PT J AU MCDONOUGH, JH MELE, PC FRANZ, CG AF MCDONOUGH, JH MELE, PC FRANZ, CG TI COMPARISON OF BEHAVIORAL AND RADIOPROTECTIVE EFFECTS OF WR-2721 AND WR-3689 SO PHARMACOLOGY BIOCHEMISTRY AND BEHAVIOR LA English DT Article DE IONIZING RADIATION; RADIOPROTECTION; WR-2721; WR-3689; OPERANT BEHAVIOR; PERFORMANCE DECREMENT; RATS ID RADIATION; TOXICITY; RATS AB The behavioral effects of the radioprotectant agents ethiofos, S-2-(3-aminopropylamino)ethylphosphorothioic acid (WR-2721) and S-2-(3-methylaminopropyl)aminoethylphosphorothioic acid (WR-3689) were evaluated in rats trained to respond under a multiple fixed-interval 120-s, fixed-ratio 50-response (mult FI FR) schedule of milk reinforcement. Each compound produced dose-dependent reductions in responding under both schedules over the same dose range (100-180 mg/kg, IP); ED50s indicated that WR-3689 was slightly more potent than WR-2721. On several performance measures, WR-3689 produced greater decrements during a second dose-effect determination, whereas WR-2721 had more pronounced effects during the initial one. In a second series of studies, low (56 mg/kg) and high (180 mg/kg) doses of both drugs were tested for radioprotective effects in rats responding under an FR-50 schedule of milk reinforcement and exposed to a nonlethal (5 gray, Gy) or lethal (10 Gy) dose of ionizing radiation (Co-60 gamma rays). Neither dose of radiation altered FR response rates on the day of exposure (day 1). Five Gy of gamma radiation produced a 25-40% reduction in response rates on days 2-5 (24-72 h) after exposure. Neither dose of WR-2721 or WR-3689 provided significant protection against these performance decrements. All groups exposed to 10 Gy experienced a progressive decline in FR responding on days 2-5 after exposure. Performance of groups that received pretreatment with the 180-mg/kg dose of either drug or the 56-mg/kg dose of WR-3689 was maintained at significantly higher levels than saline-treated controls on days 4-5 after exposure to 10 Gy; however, even at these higher levels of performance response rates remained below 50% of preirradiation control levels. Subsequently, 56 and 180 mg/kg WR-3689 and 180 mg/kg WR-2721 were found to provide protection against the lethal consequences of the 10-Gy exposure. Thus, neither WR-2721 nor WR-3689 afforded any significant short-term protection against radiation-induced performance decrements when these drugs were administered at either behaviorally ineffective or behaviorally disruptive doses. Rather, the beneficial effects of these drugs paralleled their ability to antagonize radiation-induced lethality. RP MCDONOUGH, JH (reprint author), USAF,RADIOBIOL RES INST,DEPT BEHAV SCI,BETHESDA,MD 20889, USA. NR 26 TC 11 Z9 11 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0091-3057 J9 PHARMACOL BIOCHEM BE JI Pharmacol. Biochem. Behav. PD JUN PY 1992 VL 42 IS 2 BP 233 EP 243 DI 10.1016/0091-3057(92)90521-G PG 11 WC Behavioral Sciences; Neurosciences; Pharmacology & Pharmacy SC Behavioral Sciences; Neurosciences & Neurology; Pharmacology & Pharmacy GA HZ687 UT WOS:A1992HZ68700006 PM 1321450 ER PT J AU KIRKHAM, DM AF KIRKHAM, DM TI CONSTITUTIONS IN CRISIS - POLITICAL VIOLENCE AND THE RULE OF LAW - FINN,JE SO REVIEW OF POLITICS LA English DT Book Review RP KIRKHAM, DM (reprint author), USAF ACAD,HIST,COLORADO SPRINGS,CO 80840, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU UNIV NOTRE DAME THE REVIEW POLITICS PI NOTRE DAME PA BOX B, NOTRE DAME, IN 46556 SN 0034-6705 J9 REV POLIT PD SUM PY 1992 VL 54 IS 3 BP 488 EP 491 PG 4 WC Political Science SC Government & Law GA JN360 UT WOS:A1992JN36000016 ER PT J AU SIEFKEN, H STEIN, C COPELAND, R AF SIEFKEN, H STEIN, C COPELAND, R TI DIRECT PRODUCTION OF H- FROM LIH SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article ID SURFACE; IONS AB Experiments have been performed which indicate that by directly beating lithium hydride in a vacuum, up to 18-mu-A/cm2 of negative hydrogen can be obtained from the crystal lattice. Sample temperatures reached a maximum of about 800-degrees-C. The amount of ion current extracted and analyzed is closely related to the temperature of the sample and to the rate at which the temperature is changed. The ion current appears to be emission limited and saturates with extraction voltage. For a fixed extraction voltage, the ion current could be maximized by placing a grid between the sample surface and the extraction electrode. Electrons accompanying the negative ions were removed by a magnetic trap. A Wien velocity filter was designed and built to provide definitive mass analysis of the extracted ion species. C1 USAF,SYST COMMAND,PHILLIPS LAB,ALBUQUERQUE,NM 87117. RP SIEFKEN, H (reprint author), GREENVILLE COLL,DEPT PHYS,GREENVILLE,IL 62246, USA. NR 20 TC 5 Z9 5 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD JUN PY 1992 VL 63 IS 6 BP 3394 EP 3398 DI 10.1063/1.1142558 PG 5 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA HX692 UT WOS:A1992HX69200026 ER PT J AU MCKELLAR, DP ANDERSON, CT BOYNTON, CJ PEOPLES, JB AF MCKELLAR, DP ANDERSON, CT BOYNTON, CJ PEOPLES, JB TI CHOLECYSTECTOMY DURING PREGNANCY WITHOUT FETAL LOSS SO SURGERY GYNECOLOGY & OBSTETRICS LA English DT Article AB Cholecystectomy in the pregnant patient has been generally avoided because of the reported high incidence of associated fetal loss that has been linked to spontaneous and elective abortion during the first trimester and premature labor during the third trimester. Recent developments relating to diagnostic and anesthetic management and the use of tocolytic agents have altered the over-all approach to patients. We have, therefore, retrospectively reviewed the medical records of all women discharged from four area hospitals during 1982 to 1987 with a concurrent diagnosis of cholelithiasis and pregnancy Twenty-two patients met the review criteria. The incidence of biliary stone disease among gravid patients during the time interval was 0.05 per cent. Of 22 patients, none underwent radiation for diagnosis. Nine patients underwent cholecystectomy while pregnant; two were operated upon during the first trimester, four during the second and three during the third. Three required common bile duct exploration and three had intraoperative cholangiograms. Elective abortion was not recommended to the six patients because of radiation exposure. Two of nine had premature contractions develop that were controlled with tocolytic agents. There were no spontaneous abortions. The mean Apgar scores for neonates born subsequent to cholecystectomy was virtually identical to neonates born to patients in whom cholecystectomy was deferred. It is concluded that the diagnosis and surgical treatment of cholelithiasis can be safely undertaken in the pregnant patient without fetal loss. Delaying appropiate surgical therapy no longer seems warranted. C1 WRIGHT STATE UNIV,DEPT SURG,1 WYOMING ST,DAYTON,OH 45409. USAF,DEPT SURG,WRIGHT PATTERSON AFB,OH 45433. NR 9 TC 80 Z9 83 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 JUN PY 1992 VL 174 IS 6 BP 465 EP 468 PG 4 WC Obstetrics & Gynecology; Surgery SC Obstetrics & Gynecology; Surgery GA HX303 UT WOS:A1992HX30300003 PM 1595022 ER PT J AU RAVICHANDRAN, KS LARSEN, JM AF RAVICHANDRAN, KS LARSEN, JM TI MICROSTRUCTURE AND CRACK-SHAPE EFFECTS ON THE GROWTH-BEHAVIOR OF SMALL FATIGUE CRACKS IN TI-24AL-11NB SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING LA English DT Article AB The effects of four different microstructures in the titanium aluminide alloy Ti-24Al-11Nb (at.%) on the fatigue crack growth behavior of small surface cracks and large cracks have been investigated. The four microstructures were a Widmanstatten basketweave, a Widmanstatten aligned colony, an equiaxed primary alpha(2) in a Widmanstatten matrix and a completely equiaxed alpha(2) structure. Small cracks were found to develop arbitrary shapes owing to the effects of microstructure. The crack shapes (aspect ratios) were measured using a laser interferometric and photomicroscopic system, and these measurements allowed accurate calculation of crack growth rates at the surface position as well as at the depth position for the surface cracks. After accounting for the continuous variation in crack shape in crack growth rate calculations, the trends in small-crack growth rates agreed reasonably well with the corresponding large-crack growth rates. While the crack growth rates at depth positions for small cracks correlated well with large-crack data in the basketweave microstructure, crack growth rates at surface positions correlated well with the corresponding large-crack data in the other microstructures. The microstructural factors that may be responsible for this behavior are discussed. RP RAVICHANDRAN, KS (reprint author), WL,MLLN,MAT DIRECTORATE,WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433, USA. NR 17 TC 15 Z9 15 U1 0 U2 2 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 MAY 30 PY 1992 VL 153 IS 1-2 BP 499 EP 507 DI 10.1016/0921-5093(92)90243-T PG 9 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA JC007 UT WOS:A1992JC00700024 ER PT J AU NICHOLAS, T RUSS, SM AF NICHOLAS, T RUSS, SM TI ELEVATED-TEMPERATURE FATIGUE BEHAVIOR OF SCS-6/TI-24AL-11NB SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING LA English DT Article AB An investigation has been conducted to determine the effects of stress ratio, frequency and hold time on the elevated temperature fatigue behavior of SCS-6/Ti-24Al-11Nb. Load-controlled tests conducted at 650-degrees-C, and two stress ratios, 0.1 and 0.5, are compared at a frequency of 3 Hz. The baseline tests at 3 Hz are compared with data at three other frequencies: 30, 0.0083 and 0.00278 Hz. The effects of superimposed hold times were also investigated at the lowest frequency, 0.00278 Hz. Cycles to failure are compared for all the data sets, and life-fraction models were developed which take into account both the time-dependent and cyclic-dependent effects of this composite material. The model is capable of predicting cycles to failure for the frequency range investigated and is based on data resulting from the highest frequency fatigue as well as creep testing. This linear life fraction model is extended successfully to account for hold times. RP NICHOLAS, T (reprint author), WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 12 TC 27 Z9 28 U1 0 U2 0 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 MAY 30 PY 1992 VL 153 IS 1-2 BP 514 EP 519 DI 10.1016/0921-5093(92)90245-V PG 6 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA JC007 UT WOS:A1992JC00700026 ER PT J AU SCHUERMEYER, F MARTINEZ, E SHUR, M GRIDER, D NOHAVA, J AF SCHUERMEYER, F MARTINEZ, E SHUR, M GRIDER, D NOHAVA, J TI SUBTHRESHOLD AND ABOVE THRESHOLD GATE CURRENT IN HETEROSTRUCTURE INSULATED GATE FIELD-EFFECT TRANSISTORS SO ELECTRONICS LETTERS LA English DT Article DE FIELD-EFFECT TRANSISTORS; TRANSISTORS; SEMICONDUCTOR DEVICES AND MATERIALS AB Experimental data are presented which show that the gate current at zero drain bias in HIGFETs changes qualitatively when the gate voltage is varied from below to above threshold. Above threshold, the gate current flows from the entire channel, and below threshold, the gate current flows from the gate edges. A new independent method for deducing threshold voltage is introduced. C1 UNIV VIRGINIA,DEPT ELECT ENGN,CHARLOTTESVILLE,VA 22903. HONEYWELL INC,SENSORS & SIGNAL PROC LAB,BLOOMINGTON,MN 55420. RP SCHUERMEYER, F (reprint author), WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433, USA. RI Shur, Michael/A-4374-2016 OI Shur, Michael/0000-0003-0976-6232 NR 6 TC 5 Z9 5 U1 0 U2 0 PU IEE-INST ELEC ENG PI HERTFORD PA MICHAEL FARADAY HOUSE SIX HILLS WAY STEVENAGE, HERTFORD, ENGLAND SG1 2AY SN 0013-5194 J9 ELECTRON LETT JI Electron. Lett. PD MAY 21 PY 1992 VL 28 IS 11 BP 1024 EP 1026 DI 10.1049/el:19920650 PG 3 WC Engineering, Electrical & Electronic SC Engineering GA HW541 UT WOS:A1992HW54100033 ER PT J AU KALLENRODE, MB CLIVER, EW WIBBERENZ, G AF KALLENRODE, MB CLIVER, EW WIBBERENZ, G TI COMPOSITION AND AZIMUTHAL SPREAD OF SOLAR ENERGETIC PARTICLES FROM IMPULSIVE AND GRADUAL FLARES SO ASTROPHYSICAL JOURNAL LA English DT Article DE SUN, ABUNDANCES; SUN, FLARES; SUN, PARTICLE EMISSION ID CORONAL MASS EJECTIONS; X-RAY FLARES; INTERPLANETARY SHOCKS; ACCELERATION; EVENTS; SPECTRA; WIND AB We began with a list of 77 flare-associated solar energetic particle (SEP) events observed from 1974 to 1985 by at least one of the two Helios space probes. We classified the SEP parent flares as impulsive (25 cases) or gradual (52 cases) on the basis of their soft X-ray durations. We then compared the intensities of the prompt component of approximately 0.5 MeV electrons, approximately 10 MeV protons, and approximately 10 MeV per nucleon helium for the two classes of SEP flares. We find that SEPs from gradual flares have higher intensities than SEPs from impulsive flares. These differences are most pronounced for protons (about two orders of magnitude) and less for electrons (about one order of magnitude), and helium (about a factor of 5). The SEPs from impulsive flares have a cone of emission" of +/- 50-degrees versus +/- 120-degrees for gradual flares. These results are discussed in the context of recent works on particle acceleration in solar flares. C1 USAF,PHILLIPS LAB,BEDFORD,MA 01731. RP KALLENRODE, MB (reprint author), UNIV KIEL,INST REINE & ANGEW KERNPHYS,OTTO HAHN PL 1,W-2300 KIEL 1,GERMANY. NR 42 TC 65 Z9 65 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 MAY 20 PY 1992 VL 391 IS 1 BP 370 EP 379 DI 10.1086/171352 PN 1 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA HT591 UT WOS:A1992HT59100032 ER PT J AU ESSELL, JH THOMPSON, JM HARMAN, GS HALVORSON, RD SNYDER, MJ JOHNSON, RA RUBINSAK, JR AF ESSELL, JH THOMPSON, JM HARMAN, GS HALVORSON, RD SNYDER, MJ JOHNSON, RA RUBINSAK, JR TI MARKED INCREASE IN VENOOCCLUSIVE DISEASE OF THE LIVER ASSOCIATED WITH METHOTREXATE USE FOR GRAFT-VERSUS-HOST DISEASE PROPHYLAXIS IN PATIENTS RECEIVING BUSULFAN CYCLOPHOSPHAMIDE SO BLOOD LA English DT Article ID BONE-MARROW TRANSPLANTATION; HEPATIC VENOOCLUSIVE DISEASE; SEVERE APLASTIC-ANEMIA; TERM FOLLOW-UP; VENOOCCLUSIVE DISEASE; RHEUMATOID-ARTHRITIS; CONTROLLED TRIAL; CYCLOSPORINE; LEUKEMIA; REGIMEN RP ESSELL, JH (reprint author), WILFORD HALL USAF MED CTR,DEPT HEMATOL MED ONCOL,LACKLAND AFB,TX 78236, USA. NR 28 TC 63 Z9 63 U1 0 U2 0 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 MAY 15 PY 1992 VL 79 IS 10 BP 2784 EP 2788 PG 5 WC Hematology SC Hematology GA HW618 UT WOS:A1992HW61800040 PM 1586725 ER PT J AU FISCHER, DW MANASREH, MO MATOUS, G AF FISCHER, DW MANASREH, MO MATOUS, G TI LOCAL MODE SPECTROSCOPY OF PROTON-IMPLANTED AND DEUTERON-IMPLANTED INP SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID HYDROGEN AB We have introduced hydrogen into single crystal InP:Fe by implanting samples with 2 MeV protons and/or deuterons at fluences between 1 x 10(16) and 5 x 10(17) cm-2. This results in the creation of four local vibrational modes (LVMs) in infrared absorption which are all due to the stretching vibration of bonds formed between phosphorous and the implanted atom with various lattice defects or impurities at nearest-neighbor sites. Our implant-created LVMs are much sharper than those reported by previous workers and we observe two additional well separated peaks. The two main LVMs show a strong fluence dependence and are probably associated with lattice defects. The two weakest LVMs are not as fluence-dependent and may be associated with impurities. Two samples were implanted with both protons and deuterons in an attempt to observe the formation of complexes containing both isotopes, but no evidence of such complexes could be found. C1 WRIGHT LAB, SOLID STATE ELECTR DIRECTORATE, WRIGHT PATTERSON AFB, OH 45433 USA. INDIANA UNIV PENN, DEPT PHYS, INDIANA, PA 15705 USA. RP WRIGHT LAB, MAT DIRECTORATE, WRIGHT PATTERSON AFB, OH 45433 USA. NR 13 TC 15 Z9 15 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 0021-8979 EI 1089-7550 J9 J APPL PHYS JI J. Appl. Phys. PD MAY 15 PY 1992 VL 71 IS 10 BP 4805 EP 4808 DI 10.1063/1.350621 PG 4 WC Physics, Applied SC Physics GA HV471 UT WOS:A1992HV47100021 ER PT J AU FLEITZ, PA SUTHERLAND, RL NATARAJAN, LV POTTENGER, T FERNELIUS, NC AF FLEITZ, PA SUTHERLAND, RL NATARAJAN, LV POTTENGER, T FERNELIUS, NC TI EFFECTS OF 2-PHOTON ABSORPTION ON DEGENERATE 4-WAVE-MIXING IN SOLUTIONS OF DIPHENYL POLYENES SO OPTICS LETTERS LA English DT Article ID EXCITATION SPECTROSCOPY; STATE AB We have observed double-peaked phase-conjugate pulses in the degenerate four-wave mixing of nanosecond laser pulses in solutions of diphenyl polyenes. We attribute this to the superposition of fast and slow gratings, where the slow grating is due to two-photon absorption. This is supported by the results of time delay and polarization experiments as well as evidence of a second spatial harmonic grating. C1 SCI APPLICAT INT CORP,DAYTON,OH 45431. RP FLEITZ, PA (reprint author), WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433, USA. NR 10 TC 16 Z9 18 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 MAY 15 PY 1992 VL 17 IS 10 BP 716 EP 718 DI 10.1364/OL.17.000716 PG 3 WC Optics SC Optics GA HT344 UT WOS:A1992HT34400006 PM 19794607 ER PT J AU REYNOLDS, DC EVANS, KR STUTZ, CE JOGAI, B WIE, CR YU, PW AF REYNOLDS, DC EVANS, KR STUTZ, CE JOGAI, B WIE, CR YU, PW TI LIGHT-HOLE AND HEAVY-HOLE FREE-EXCITON TRANSITIONS IN NARROW INXGA1-XAS/GAAS QUANTUM-WELLS SO PHYSICAL REVIEW B LA English DT Article ID BAND OFFSET; SUPERLATTICES; ENERGY AB Photoluminescence measurements were made on narrow InxGa1-xAs/GaAs single-quantum-well structures with nominal x values of 0.10 and well widths ranging from 2 to 17 monolayers (ML's). Transitions due to the collapse of heavy-hole free excitons and light-hole free excitons as well as the usual GaAs band-edge transitions are observed. The measured transition energies are compared with results of band-structure calculations of the light-hole and heavy-hole subband energies for various assumed relative valence-band-offset values. A detailed comparison between the measured and calculated results suggests that the light hole is only marginally, if at all, confined in the 2-, 4-, 6-, and 10-ML wells. Inconclusive results are obtained for the 17-ML well because of an uncertainty in its exact x value. These results directly imply an upper limit of 0.4 for the relative valence-band offset for pseudomorphic In0.10Ga0.90As/GaAs on GaAs(001) heterojunctions. Also reported is a strong dependence of the difference in the calculated light-hole and heavy-hole subband energies on both the indium content and the assumed valence-band offset. C1 WRIGHT LAB,ELECTR TECHNOL DIRECTORATE WLEL,WRIGHT PATTERSON AFB,OH 45433. UNIVERSAL ENERGY SYST INC,DAYTON,OH 45432. SUNY BUFFALO,DEPT ELECT & COMP ENGN,BUFFALO,NY 14260. WRIGHT STATE UNIV,RES CTR,DAYTON,OH 45435. RP REYNOLDS, DC (reprint author), SE CTR ELECTR ENGN EDUC,ST CLOUD,FL 32769, USA. NR 13 TC 8 Z9 8 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 1992 VL 45 IS 19 BP 11156 EP 11160 DI 10.1103/PhysRevB.45.11156 PG 5 WC Physics, Condensed Matter SC Physics GA HU799 UT WOS:A1992HU79900034 ER PT J AU LOMBARD, CM NEKKANTI, RM SEETHARAMAN, V AF LOMBARD, CM NEKKANTI, RM SEETHARAMAN, V TI MICROSTRUCTURAL DEVELOPMENT DURING THERMAL-PROCESSING OF GAMMA TITANIUM ALUMINIDE SO SCRIPTA METALLURGICA ET MATERIALIA LA English DT Article C1 UES INC,DAYTON,OH 45432. RP LOMBARD, CM (reprint author), WRIGHT LAB,MLLN,WRIGHT PATTERSON AFB,OH 45433, USA. NR 9 TC 6 Z9 7 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 MAY 15 PY 1992 VL 26 IS 10 BP 1559 EP 1564 DI 10.1016/0956-716X(92)90256-E PG 6 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA HQ890 UT WOS:A1992HQ89000011 ER PT J AU JACKSON, AG LEE, DS AF JACKSON, AG LEE, DS TI CHARACTERIZATION OF THE PHASES PRESENT IN A TI-45A/OA1-10A/ONB ALLOY SO SCRIPTA METALLURGICA ET MATERIALIA LA English DT Article C1 WRIGHT LAB,MLLM,WRIGHT PATTERSON AFB,OH 45433. RP JACKSON, AG (reprint author), UES INC,DAYTON,OH 45432, USA. NR 8 TC 9 Z9 9 U1 0 U2 4 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 MAY 15 PY 1992 VL 26 IS 10 BP 1575 EP 1579 DI 10.1016/0956-716X(92)90259-H PG 5 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA HQ890 UT WOS:A1992HQ89000014 ER PT J AU MANASREH, MO EVANS, KR STUTZ, CE LOOK, DC HEMSKY, J AF MANASREH, MO EVANS, KR STUTZ, CE LOOK, DC HEMSKY, J TI INCORPORATION OF SILICON AND ALUMINUM IN LOW-TEMPERATURE MOLECULAR-BEAM EPITAXIAL GAAS SO APPLIED PHYSICS LETTERS LA English DT Article AB The localized vibrational modes (LVMs) of silicon donor (SiGa) and aluminum isovalent (AlGa) impurities in molecular beam epitaxial GaAs layers grown at various temperatures are studied using the infrared absorption technique. It is found that the total integrated absorption of these impurities LVMs is decreased as the growth temperature decreases. This finding suggests a nonsubstitutional incorporation of Si and Al in GaAs layers grown at 200-degrees-C. On the other hand, a subtitutional incorporation is obtained in GaAs layers grown at temperatures higher than 350-degrees-C. A recovery of the SiGa LVMs in GaAs layers grown at 200-degrees-C has not been achieved by thermal annealing. C1 WRIGHT STATE UNIV,DEPT PHYS,DAYTON,OH 45435. RP MANASREH, MO (reprint author), WRIGHT LAB,SOLID STATE ELECTR DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 14 TC 6 Z9 6 U1 0 U2 2 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 MAY 11 PY 1992 VL 60 IS 19 BP 2377 EP 2379 DI 10.1063/1.107031 PG 3 WC Physics, Applied SC Physics GA HT679 UT WOS:A1992HT67900020 ER PT J AU HAWRYLAK, P GRABOWSKI, M TUSZYNSKI, JA AF HAWRYLAK, P GRABOWSKI, M TUSZYNSKI, JA TI NONLINEAR POLARITON EXCITATIONS IN QUANTUM DOT ARRAYS SO PHYSICS LETTERS A LA English DT Article ID SUPERLATTICES AB We investigate the tunneling of photons in a quasi-one-dimensional array of polarizable quantum dots using Maxwell-Bloch equations. This allows a first principle study of nonlinear polaritons in saturable, dispersive and absorptive, periodic media. The nonlinear field equation for the steady state generates linearized excitations which form photonic bands and nonlinear excitations: gap solitons. The possibility of manipulating the photonic gaps and gap solitons by separately contacting the dots is examined. C1 UNIV COLORADO,DEPT PHYS,COLORADO SPRINGS,CO 80933. USAF ACAD,FRANK J SEILER RES LAB,COLORADO SPRINGS,CO 80840. UNIV ALBERTA,DEPT PHYS,EDMONTON T6G 2J1,ALBERTA,CANADA. RP HAWRYLAK, P (reprint author), NATL RES COUNCIL CANADA,INST MICROSTRUCT SCI,OTTAWA K1A 0R6,ONTARIO,CANADA. NR 13 TC 1 Z9 1 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9601 J9 PHYS LETT A JI Phys. Lett. A PD MAY 11 PY 1992 VL 165 IS 2 BP 148 EP 152 DI 10.1016/0375-9601(92)90090-9 PG 5 WC Physics, Multidisciplinary SC Physics GA HV425 UT WOS:A1992HV42500010 ER PT J AU SHACKELFORD, SA MCGUIRE, RR COCHOY, RE AF SHACKELFORD, SA MCGUIRE, RR COCHOY, RE TI DIRECT POLYNITROALIPHATIC ALCOHOL ADDITION TO ALKENES .2. ONE-STEP SYNTHESIS OF BETA-SUBSTITUTED POLYNITROALKYL VINYL ETHERS VIA AN ALTERNATIVE TRANSETHERIFICATION PATHWAY SO JOURNAL OF ORGANIC CHEMISTRY LA English DT Article RP SHACKELFORD, SA (reprint author), USAF ACAD,AFSC,FRANK J SEILER RES LAB,COLORADO SPRINGS,CO 80840, USA. NR 11 TC 3 Z9 4 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0022-3263 J9 J ORG CHEM JI J. Org. Chem. PD MAY 8 PY 1992 VL 57 IS 10 BP 2950 EP 2953 DI 10.1021/jo00036a038 PG 4 WC Chemistry, Organic SC Chemistry GA HT853 UT WOS:A1992HT85300038 ER PT J AU BERMAN, MR AF BERMAN, MR TI EXCIMER LASER DARKENING OF ETFE POLYMER-FILMS SO JOURNAL OF APPLIED POLYMER SCIENCE LA English DT Article ID RAMAN; RADIATION; SURFACES; ABLATION AB Darkening of ethylene-tetrafluorethylene (ETFE) films caused by exposure to xenon chloride excimer laser radiation at 308 nm was studied. Darkening was determined to result from a rapid, local heating of the film. The laser-induced heating caused elimination of hydrogen fluoride from the film, leaving a noncrystalline graphitic backbone. A threshold laser fluence for darkening of (205 +/- 25) mJ/cm2 was observed. At laser fluences above this threshold, the rate of darkening of the ETFE films increased linearly with laser fluence. The rate of darkening was found to decrease as the extent of crosslinking in the polymer sample increased. Observations suggest that low concentrations of monomers in the film might affect the darkening rate. C1 MCDONNELL DOUGLAS CORP,MCDONNELL DOUGLAS RES LABS,ST LOUIS,MO 63166. RP BERMAN, MR (reprint author), USAF,OFF SCI RES,BOLLING AFB,WASHINGTON,DC 20332, USA. NR 19 TC 2 Z9 2 U1 0 U2 3 PU JOHN WILEY & SONS INC PI NEW YORK PA 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0021-8995 J9 J APPL POLYM SCI JI J. Appl. Polym. Sci. PD MAY 5 PY 1992 VL 45 IS 1 BP 111 EP 117 DI 10.1002/app.1992.070450113 PG 7 WC Polymer Science SC Polymer Science GA HN275 UT WOS:A1992HN27500013 ER PT J AU RAVICHANDRAN, KS AF RAVICHANDRAN, KS TI THE MECHANICS OF TOUGHNESS DEVELOPMENT IN DUCTILE PHASE REINFORCED BRITTLE MATRIX COMPOSITES SO ACTA METALLURGICA ET MATERIALIA LA English DT Article ID STRAIN-SOFTENING MATERIAL; FRACTURE-TOUGHNESS; WEIGHT FUNCTION; CRACK; PARTICLES; SIZE; STRENGTH; CERAMICS AB This study is a numerical exercise to theoretically analyze toughening in brittle materials consisting of ductile reinforcements, on the basis of crack bridging by ductile particles. The effects of the particle constitute behavior, the shape of the stress-displacement law, the matrix fracture toughness and the overall elastic modulus of the composite on toughness have been illustrated by simple fracture mechanics calculations of self-consistent crack opening displacement profiles and crack bridging stress distributions. An approach to calculate the crack surface displacements, crack bridging stresses and stress intensity factors in any specimen geometry, using weight functions, is presented. Different types of idealized particle stress-displacement responses were used in the calculations. The opening characteristics of a bridge crack and the evolution of toughness for these types have been examined. The conditions for maximum bridging and toughness as well as the conditions at which a fully bridged crack transforms to a partially bridged one have been identified. The role of individual parameters used in constructing the stress-displacement law on composite toughness has been assessed. The toughness has been found to manifest from a complex interaction of the matrix fracture toughness, the composite modulus and the flow behavior of the ductile particle. RP RAVICHANDRAN, KS (reprint author), USAF, WRIGHT LAB, MAT DIRECTORATE, WRIGHT PATTERSON AFB, OH 45433 USA. NR 28 TC 19 Z9 19 U1 0 U2 3 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0956-7151 J9 ACTA METALL MATER JI Acta Metall. Mater. PD MAY PY 1992 VL 40 IS 5 BP 1009 EP 1022 DI 10.1016/0956-7151(92)90078-S PG 14 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA HP055 UT WOS:A1992HP05500014 ER PT J AU RANKINE, RR AF RANKINE, RR TI TOTAL QUALITY TREATMENT FOR SCIENCE AND TECHNOLOGY SO AEROSPACE AMERICA LA English DT Article RP RANKINE, RR (reprint author), USAF,WASHINGTON,DC 20330, 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 MAY PY 1992 VL 30 IS 5 BP 36 EP 40 PG 5 WC Engineering, Aerospace SC Engineering GA HT249 UT WOS:A1992HT24900010 ER PT J AU CLERICI, M LANDAY, AL KESSLER, HA LUCEY, DR HENDRIX, CW PIZZO, PA ROILIDES, E SHEARER, GM AF CLERICI, M LANDAY, AL KESSLER, HA LUCEY, DR HENDRIX, CW PIZZO, PA ROILIDES, E SHEARER, GM TI A NOVEL SURROGATE MARKER - T-HELPER (TH) FUNCTION IN HIV+ PATIENTS ON ANTIRETROVIRAL THERAPY SO AIDS RESEARCH AND HUMAN RETROVIRUSES LA English DT Meeting Abstract C1 NCI,EXPTL IMMUNOL BRANCH,BETHESDA,MD 20892. NCI,PEDIAT BRANCH,BETHESDA,MD 20892. RUSH PRESBYTERIAN ST LUKES MED CTR,CHICAGO,IL 60612. WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. RI Hendrix, Craig/G-4182-2014 OI Hendrix, Craig/0000-0002-5696-8665 NR 0 TC 0 Z9 0 U1 0 U2 0 PU MARY ANN LIEBERT INC PUBL PI LARCHMONT PA 2 MADISON AVENUE, LARCHMONT, NY 10538 SN 0889-2229 J9 AIDS RES HUM RETROV JI Aids Res. Hum. Retrovir. PD MAY PY 1992 VL 8 IS 5 BP 864 EP 864 PG 1 WC Immunology; Infectious Diseases; Virology SC Immunology; Infectious Diseases; Virology GA JA513 UT WOS:A1992JA51300065 ER PT J AU NISHINO, SF SPAIN, JC BELCHER, LA LITCHFIELD, CD AF NISHINO, SF SPAIN, JC BELCHER, LA LITCHFIELD, CD TI CHLOROBENZENE DEGRADATION BY BACTERIA ISOLATED FROM CONTAMINATED GROUNDWATER SO APPLIED AND ENVIRONMENTAL MICROBIOLOGY LA English DT Article ID PSEUDOMONAS SP; TOLUENE DIOXYGENASE; 1,4-DICHLOROBENZENE; TRICHLOROETHYLENE; BIODEGRADATION; PURIFICATION; PROTEIN; SYSTEM; STRAIN AB Bacterial isolates were obtained from groundwater and soils contaminated with chlorobenzene (CB). The isolates were tested to determine whether the natural community could remove the groundwater contaminants. These isolates were identified and characterized as to their ability to grow on CB and related aromatic compounds. The complete consortium could mineralize approximately 54% of the CB within 7 days, with no accumulation of 3-chlorocatechol. Metabolic pathways were evaluated for several isolates. One phenotype was characterized by the ability to degrade CB by the modified ortho pathway. One strain also degraded p-dichlorobenzene by using the same pathway. Isolates exhibiting a second phenotype degraded p-cresol, benzene, and phenol by the classical ortho pathway and accumulated 3-chlorocatechol when grown in the presence of CB. Strains of the third phenotype grew on complex media in the presence of CB but did not transform any of the aromatic compounds tested. The results suggest that the indigenous microbial community at the contaminated site would be able to degrade CB if provided with the appropriate conditions. C1 USAF,CIVIL ENGN SUPPORT AGCY,TYNDALL AFB,FL 32403. DUPONT CO,HASKELL LAB,NEWARK,DE 19711. DUPONT CO,ENVIRONM REMEDIAT SERV,ASTON,PA 19014. NR 29 TC 52 Z9 57 U1 0 U2 6 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 MAY PY 1992 VL 58 IS 5 BP 1719 EP 1726 PG 8 WC Biotechnology & Applied Microbiology; Microbiology SC Biotechnology & Applied Microbiology; Microbiology GA HR873 UT WOS:A1992HR87300045 PM 1622244 ER PT J AU REA, MA AF REA, MA TI DIFFERENT POPULATIONS OF CELLS IN THE SUPRACHIASMATIC NUCLEI EXPRESS C-FOS IN ASSOCIATION WITH LIGHT-INDUCED PHASE DELAYS AND ADVANCES OF THE FREE-RUNNING ACTIVITY RHYTHM IN HAMSTERS SO BRAIN RESEARCH LA English DT Article DE SUPRACHIASMATIC NUCLEI; C-FOS; CIRCADIAN RHYTHM; LIGHT ID CIRCADIAN-RHYTHMS; GENE-EXPRESSION; NERVOUS-SYSTEM; PROTEIN; INDUCTION; ENTRAINMENT; RODENTS; MEMORY; LONG AB Circadian rhythmicity is controlled by a light-entrainable pacemaker located in the suprachiasmatic nuclei (SCN) of the mammalian hypothalamus. Brief light exposure during the subjective night causes phase shifts of the free-running activity rhythm and expression of c-fos-related proteins (Fos) among a population of cells in the hamster SCN. Light exposure (30 lux for 15 min) during the early subjective night (CT13) causes phase delays (-60 +/- 12) min), white exposure at mid-subjective night (CT18) causes phase advances (114 +/- 48 min) of the free-running activity rhythm. Light exposure at mid-subjective day (CT6) does not cause phase alterations of the rhythm. Similarly, only light exposure at CT13 or CT18 induces Fos expression in the SCN. The distribution of Fos-immunoreactive cells in the SCN is more widespread in animals stimulated with light at CT18. In addition, a group of cells located dorsal and anterior to the SCN express Fos only after stimulation at CT18. The data are consistent with the hypothesis that Fos expression represents an event in the signal transduction pathway leading to light-induced alterations in circadian pacemaker function. Furthermore, the data raise the possibility that different populations of cells in the suprachiasmatic hypothalamus may participate in light-induced phase advances and delays of the circadian pacemaker. RP REA, MA (reprint author), ARMSTRONG LAB,CIRCADIAN NEUROBIOL RES GRP,AL,CFTO,BROOKS AFB,TX 78235, USA. NR 31 TC 90 Z9 90 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0006-8993 J9 BRAIN RES JI Brain Res. PD MAY 1 PY 1992 VL 579 IS 1 BP 107 EP 112 DI 10.1016/0006-8993(92)90748-X PG 6 WC Neurosciences SC Neurosciences & Neurology GA HU780 UT WOS:A1992HU78000014 PM 1623398 ER PT J AU KELLY, JW DOOLEY, DP LATTUADA, CP SMITH, CE AF KELLY, JW DOOLEY, DP LATTUADA, CP SMITH, CE TI A SEVERE, UNUSUAL REACTION TO TRIMETHOPRIM-SULFAMETHOXAZOLE IN PATIENTS INFECTED WITH HUMAN-IMMUNODEFICIENCY-VIRUS SO CLINICAL INFECTIOUS DISEASES LA English DT Article ID TUMOR NECROSIS FACTOR; PNEUMOCYSTIS-CARINII PNEUMONIA; AIDS-RELATED COMPLEX; IMMUNE-DEFICIENCY SYNDROME; SEPTIC SHOCK; DESENSITIZATION; CIPROFLOXACIN; ANAPHYLAXIS; ENDOTOXIN AB The clinical features of three patients with a life-threatening reaction to trimethoprim-sulfamethoxazole (TMP-SMZ) are presented along with seven other cases from the literature. All patients developed sudden fever and hypotension immediately after the administration of TMP-SMZ; usually this reaction occurred within approximately 2 weeks of completion of a previous course of the drug. All but one patient had a rash. Most patients were hypoxemic and developed diffuse pulmonary infiltrates. All patients responded rapidly to supportive care, while bacterial cultures remained negative. The presence, absence, or character of previous adverse reactions to TMP-SMZ did not predict subsequent severe reactions. Although its mechanism remains unclear, this reaction has features of both IgE-mediated anaphylaxis and cytokine (tumor necrosis factor)-mediated effects. We advise extreme caution, with close observation, when this drug is first readministered to patients who have experienced any TMP-SMZ-associated toxicity within the previous 6-8 weeks. C1 WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. BROOKE ARMY MED CTR,INFECT DIS SERV,FT SAM HOUSTON,TX 78234. NR 30 TC 56 Z9 57 U1 0 U2 0 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 1058-4838 J9 CLIN INFECT DIS JI Clin. Infect. Dis. PD MAY PY 1992 VL 14 IS 5 BP 1034 EP 1039 PG 6 WC Immunology; Infectious Diseases; Microbiology SC Immunology; Infectious Diseases; Microbiology GA HQ569 UT WOS:A1992HQ56900007 PM 1600003 ER PT J AU KIM, KH LAWRENCE, TF AF KIM, KH LAWRENCE, TF TI ADAPTIVE FAULT-TOLERANCE IN COMPLEX REAL-TIME DISTRIBUTED COMPUTER-SYSTEM APPLICATIONS SO COMPUTER COMMUNICATIONS LA English DT Article DE ADAPTIVE FAULT-TOLERANCE; REAL-TIME SYSTEM; DISTRIBUTED COMPUTER SYSTEM; MULTIMODE FAULT-TOLERANCE; CONSISTENCY; ADAPTIVE DECISION; HARD-REAL-TIME; SOFT-REAL-TIME AB In many challenging applications, environmental conditions that affect fault-tolerance requirements imposed on computer systems change dynamically. As significant changes in environmental conditions or in internal computing resource conditions occur, the set of fault-tolerance mechanisms that are effective also changes. The purpose of adaptive fault-tolerance (AFT) is to meet the dynamically and widely changing fault-tolerance requirement by efficiently and adaptively utilizing a limited and dynamically changing amount of available redundant processing resources. This paper is an attempt to define the notion of AFT in a reasonably concrete form, identify major technical issues to be resolved for practical realization of AFT, and illustrate some feasible approaches to resolving the major issues. After discussing the basic concept and major research issues, an important case of AFT management, which is to adapt to the change of the environment from the soft-real-time mode to the hard-real-time mode, is examined in some detail. C1 USAF,ROME LAB,GRIFFISS AFB,NY 13441. RP KIM, KH (reprint author), UNIV CALIF IRVINE,DEPT ELECT & COMP ENGN,IRVINE,CA 92717, USA. NR 16 TC 9 Z9 11 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0140-3664 J9 COMPUT COMMUN JI Comput. Commun. PD MAY PY 1992 VL 15 IS 4 BP 243 EP 251 PG 9 WC Computer Science, Information Systems; Engineering, Electrical & Electronic; Telecommunications SC Computer Science; Engineering; Telecommunications GA HQ145 UT WOS:A1992HQ14500005 ER PT J AU GOLDBLUM, DK CLEGG, JM ERVING, JD AF GOLDBLUM, DK CLEGG, JM ERVING, JD TI USE OF RISK ASSESSMENT GROUNDWATER MODEL IN INSTALLATION RESTORATION PROGRAM (IRP) SITE DECISIONS SO ENVIRONMENTAL PROGRESS LA English DT Article AB Toxic chemicals have created much public concern over the past thirty years due to both environmental pollution and hazardous waste management. Hence, the associated Risk Assessment Process is both complicated and crucial in the outcome of decisions concerning remediation. Quantification for a particular contaminant can demonstrate that the concentration is adequately low, so that there is no need to carry out a remedial action, at that given site. The contaminant's specific calculated risk in a risk assessment is directly proportional to the average concentration of that contaminant chemical. The total risk is additive for all the contaminants present at that site, for both carcinogenic and noncarcinogenic risks. Further analysis into the risk assessment for a drum storage area at a DOD installation rendering airlift support for airborne forces resulted in elimination of an unnecessary and costly remedial action. RP GOLDBLUM, DK (reprint author), USAF,CTR ENVIRONM EXCELLENCE,ENVIRONM SERV OFF,DIV ENVIRONM RESTORAT,BROOKS AFB,TX 78235, USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU AMER INST CHEMICAL ENGINEERS PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 0278-4491 J9 ENVIRON PROG JI Environ. Prog. PD MAY PY 1992 VL 11 IS 2 BP 91 EP 97 DI 10.1002/ep.670110214 PG 7 WC Engineering, Environmental; Engineering, Chemical; Environmental Sciences SC Engineering; Environmental Sciences & Ecology GA HW484 UT WOS:A1992HW48400004 ER PT J AU HOLLIS, AL BUTCHER, WI DAVIS, H HENDERSON, RA STONE, WL AF HOLLIS, AL BUTCHER, WI DAVIS, H HENDERSON, RA STONE, WL TI STRUCTURAL ALTERATIONS IN RETINAL TISSUES FROM RATS DEFICIENT IN VITAMIN-E AND SELENIUM AND TREATED WITH HYPERBARIC-OXYGEN SO EXPERIMENTAL EYE RESEARCH LA English DT Article DE VITAMIN-E; SELENIUM; HYPERBARIC OXYGEN; LIPID PEROXIDATION; RETINAL TISSUES; ULTRASTRUCTURAL STUDIES ID PIGMENT EPITHELIUM; LIPID-PEROXIDATION; ANTIOXIDANT NUTRIENTS; DAMAGE; LIPOFUSCIN; LIGHT; ACID C1 JAMES H QUILLEN COLL MED,DEPT PEDIAT,BOX 70578,JOHNSON CITY,TN 37614. USAF,SCH AEROSP MED,BROOKS AFB,TX 78235. USAF,DIRECTORATE AEROSP MED,WRIGHT PATTERSON AFB,OH 45433. HARVARD UNIV,SCH PUBL HLTH,BOSTON,MA 02115. RI Stone, William/B-6499-2008 OI Stone, William/0000-0002-6829-0417 NR 31 TC 8 Z9 8 U1 0 U2 0 PU ACADEMIC PRESS LTD PI LONDON PA 24-28 OVAL RD, LONDON, ENGLAND NW1 7DX SN 0014-4835 J9 EXP EYE RES JI Exp. Eye Res. PD MAY PY 1992 VL 54 IS 5 BP 671 EP 684 DI 10.1016/0014-4835(92)90022-K PG 14 WC Ophthalmology SC Ophthalmology GA HY289 UT WOS:A1992HY28900004 PM 1623952 ER PT J AU ADAMSON, M REINER, B OLSON, JL GOODMAN, Z PLOTNICK, L BERNARDINI, I GAHL, WA AF ADAMSON, M REINER, B OLSON, JL GOODMAN, Z PLOTNICK, L BERNARDINI, I GAHL, WA TI INDIAN CHILDHOOD CIRRHOSIS IN THE AMERICAN CHILD SO GASTROENTEROLOGY LA English DT Article ID COPPER STORAGE DISEASE; WILSONS DISEASE; LIVER; TOXICOSIS; EXCRETION; PROTEIN; RAT C1 NICHHD,HUMAN GENET BRANCH,HUMAN BIOCHEM GENET SECT,BLDG 10,ROOM 95242,BETHESDA,MD 20892. JOHNS HOPKINS UNIV,SCH MED,DEPT PEDIAT,DIV ENDOCRINOL,BALTIMORE,MD 21205. USAF,INST PATHOL,WASHINGTON,DC 20330. JOHNS HOPKINS UNIV,SCH MED,DEPT PATHOL,BALTIMORE,MD 21205. FU NCRR NIH HHS [RR-0052]; NIDDK NIH HHS [5-T32-DK-07116] NR 40 TC 43 Z9 43 U1 1 U2 2 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 MAY PY 1992 VL 102 IS 5 BP 1771 EP 1777 PG 7 WC Gastroenterology & Hepatology SC Gastroenterology & Hepatology GA HR049 UT WOS:A1992HR04900042 PM 1568588 ER PT J AU LAM, Y LOEHR, JP SINGH, J AF LAM, Y LOEHR, JP SINGH, J TI COMPARISON OF STEADY-STATE AND TRANSIENT CHARACTERISTICS OF LATTICE-MATCHED AND STRAINED INGAAS-ALGAAS (ON GAAS) AND INGAAS-ALINAS (ON INP) QUANTUM-WELL LASERS SO IEEE JOURNAL OF QUANTUM ELECTRONICS LA English DT Article ID THRESHOLD CURRENT; SEMICONDUCTOR-LASERS; INJECTION-LASERS; MODULATION; EFFICIENCY; SPECTRA; DIODES AB Numerical techniques are developed to study the output spectra and to solve the multimode coupled rate equations including TE and TM propagations for InxGa1-xAsAl0.3Ga0.7As and In0.53+xGa0.47-xAs-Al0.48In0.52As quantum-well lasers. Optical properties are calculated from a 4 x 4 k . p bandstructure and strain effects are included with the deformation potential theory. We find that an introduction of 1.4% compressive strain to the quantum well results in roughly 3-4 times improvement in the intrinsic static characteristics in terms of lower threshold current, greater mode suppression, and lower nonlasing photon population in the laser cavity. We also identify the role of strain on the large signal temporal response. If the laser is switched from the off state to a given photon density in the lasing mode, then the strained system exhibits a faster intrinsic time response. However, if the lasers are switched to equal total photon density, then the strained system has a slower time response. We also include calculated CHSH Auger rates in our model and find that the main effect of Auger recombination is to greatly increase the threshold current and to shorten the response time to large signal switching. C1 UNIV MICHIGAN,DEPT ELECT ENGN & COMP SCI,SOLID STATE ELECTR LAB,ANN ARBOR,MI 48109. USAF,ELECTR TECHNOL LAB,WRIGHT PATTERSON AFB,OH 45433. RP LAM, Y (reprint author), UNIV MICHIGAN,CTR HIGH FREQUENCY MICROELECTR,ANN ARBOR,MI 48109, USA. NR 27 TC 22 Z9 25 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 0018-9197 J9 IEEE J QUANTUM ELECT JI IEEE J. Quantum Electron. PD MAY PY 1992 VL 28 IS 5 BP 1248 EP 1261 DI 10.1109/3.135265 PG 14 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA HT023 UT WOS:A1992HT02300006 ER PT J AU BROTHERTON, TW AF BROTHERTON, TW TI CAPABILITY EVALUATION ADAPTED TO PROCUREMENT SO IEEE SOFTWARE LA English DT Article RP BROTHERTON, TW (reprint author), USAF,DEF INFORMAT SYST AGCY,WASHINGTON,DC 20330, USA. NR 0 TC 0 Z9 0 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 0740-7459 J9 IEEE SOFTWARE JI IEEE Softw. PD MAY PY 1992 VL 9 IS 3 BP 109 EP 110 PG 2 WC Computer Science, Software Engineering SC Computer Science GA HQ443 UT WOS:A1992HQ44300027 ER PT J AU LOOK, DC YAMAMOTO, H NAKANO, K AF LOOK, DC YAMAMOTO, H NAKANO, K TI OHMIC CONTACT FORMATION ON GAAS-LAYERS WITH LOW-TEMPERATURE MOLECULAR-BEAM EPITAXIAL CAPS SO IEEE TRANSACTIONS ON ELECTRON DEVICES LA English DT Note ID LOW-FREQUENCY DISPERSION; MESFETS; TRANSCONDUCTANCE; BAND; MBE AB Molecular-beam epitaxial GaAs layers, grown at 200 or 400-degrees-C, show great promise as passivating or insulating films on top of standard n-type MESFET layers (n congruent-to 1.6 x 10(17) cm-3) grown at normal temperatures (580-600-degrees-C). Here we show that ohmic contacts, with specific contact resistances of 10(-6) OMEGA.cm2, are easily fabricated without removing the cap layers. Preliminary results on capped p-type MESFET layers (p congruent-to 1.5 x 10(17) cm-3) suggest that a 200-degrees cap may degrade the contact resistance by a factor of 3-10. C1 WRIGHT LAB,ERL,WRIGHT PATTERSON AFB,OH 45433. RP LOOK, DC (reprint author), WRIGHT STATE UNIV,RES CTR,DAYTON,OH 45435, USA. NR 10 TC 4 Z9 4 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 0018-9383 J9 IEEE T ELECTRON DEV JI IEEE Trans. Electron Devices PD MAY PY 1992 VL 39 IS 5 BP 1237 EP 1239 DI 10.1109/16.129112 PG 3 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA HP269 UT WOS:A1992HP26900035 ER PT J AU SOBEL, KM YU, WL PIOU, JE CLOUTIER, JR WILSON, R AF SOBEL, KM YU, WL PIOU, JE CLOUTIER, JR WILSON, R TI ROBUST EIGENSTRUCTURE ASSIGNMENT WITH STRUCTURED STATE-SPACE UNCERTAINTY AND UNMODELLED DYNAMICS SO INTERNATIONAL JOURNAL OF SYSTEMS SCIENCE LA English DT Article ID LINEAR-SYSTEMS; DESIGN AB New time domain stability robustness results have been obtained for a non-strictly proper linear time-invariant plant which is subject to simultaneous time-varying structured state-space uncertainty and norm bounded unmodelled dynamics. Sufficient conditions for robust stability are obtained both for a constant gain output feedback controller and an output feedback dynamic compensator. The robustness conditions are explicitly in terms of the closed-loop eigenvalues and eigenvectors so that these new results are especially well suited for a robust eigenstructure assignment design method. An example is presented of a robust eigenstructure assignment autopilot using dynamic compensation for the yaw/roll dynamics of a bank-to-turn missile. C1 USAF,WRIGHT LABS,ARMAMENT DIRECTORATE,MNAG,EGLIN AFB,FL 32542. RP SOBEL, KM (reprint author), CUNY,DEPT ELECT ENGN,NEW YORK,NY 10031, USA. NR 12 TC 5 Z9 5 U1 0 U2 0 PU TAYLOR & FRANCIS LTD PI LONDON PA ONE GUNDPOWDER SQUARE, LONDON, ENGLAND EC4A 3DE SN 0020-7721 J9 INT J SYST SCI JI Int. J. Syst. Sci. PD MAY PY 1992 VL 23 IS 5 BP 765 EP 788 DI 10.1080/00207729208949247 PG 24 WC Automation & Control Systems; Computer Science, Theory & Methods; Operations Research & Management Science SC Automation & Control Systems; Computer Science; Operations Research & Management Science GA HU497 UT WOS:A1992HU49700007 ER PT J AU PENDLETON, E LEE, M WASSERMAN, L AF PENDLETON, E LEE, M WASSERMAN, L TI APPLICATION OF ACTIVE FLEXIBLE WING TECHNOLOGY TO THE AGILE FALCON SO JOURNAL OF AIRCRAFT LA English DT Article AB The Active Flexible Wing is an integrated technology wing concept of special interest to systems requiring high maneuverability at high speed. The following article examines the results from an application of the Active Flexible Wing (AFW) concept to an F-16 Agile Falcon, low-speed aeroelastic model. The article also summarizes, for archival purposes, design and fabrication procedures typical for construction of low-speed aeroelastic models. The Active Flexible Wing concept is applied to a 1/5 scale model design based upon full scale preliminary wing design studies conducted for the U.S. Air Force F-16 Agile Falcon fighter program. The model is equipped with multiple leading- and trailing-edge control surfaces. Wind tunnel test results are presented showing wing control power increases generated through the use of the leading- and trailing-edge control surfaces in conjunction with increased wing flexibility. The results show that the Active Flexible Wing concept is a viable concept for the Agile Falcon planform and that a leading-edge outboard control surface can be a particularly powerful control power effector. RP PENDLETON, E (reprint author), USAF,WRIGHT AERONAUT LABS,FLIGHT DYNAM LAB,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 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 0021-8669 J9 J AIRCRAFT JI J. Aircr. PD MAY-JUN PY 1992 VL 29 IS 3 BP 444 EP 451 DI 10.2514/3.46181 PG 8 WC Engineering, Aerospace SC Engineering GA HX252 UT WOS:A1992HX25200023 ER PT J AU LIEFER, RK VALASEK, J EGGOLD, DP DOWNING, DR AF LIEFER, RK VALASEK, J EGGOLD, DP DOWNING, DR TI FIGHTER AGILITY METRICS, RESEARCH AND TEST SO JOURNAL OF AIRCRAFT LA English DT Article AB This paper presents the results of an analysis of proposed metrics to assess fighter aircraft agility. A novel framework for classifying these metrics is developed and applied. A set of transient metrics intended to quantify the axial and pitch agility of fighter aircraft is evaluated with a high fidelity, nonlinear generic simulation of the F-18 Hornet. Test techniques and data reduction methods are proposed, and sensitivities to pilot introduced errors during flight testing is investigated. Results indicate that the power onset and power loss parameters are promising candidates for quantifying axial agility, while maximum pitch-up and pitch-down rates are for quantifying pitch agility. RP LIEFER, RK (reprint author), USAF ACAD,COLORADO SPRINGS,CO 80840, USA. NR 0 TC 6 Z9 6 U1 2 U2 6 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 MAY-JUN PY 1992 VL 29 IS 3 BP 452 EP 457 DI 10.2514/3.46182 PG 6 WC Engineering, Aerospace SC Engineering GA HX252 UT WOS:A1992HX25200024 ER PT J AU CHRISTIAN, TF HAMMOND, DO COCHRAN, JB AF CHRISTIAN, TF HAMMOND, DO COCHRAN, JB TI COMPOSITE-MATERIAL REPAIRS TO METALLIC AIRFRAME COMPONENTS SO JOURNAL OF AIRCRAFT LA English DT Article AB The repair of metal structures by using composite materials is a technology that was pioneered in Australia, and excellent results have been obtained in over 500 repairs of corrosion and fatigue cracking. This paper will present details of the first in-service composite material repair applied to metal structure on USAF C-141B operational aircraft. This engineering study evaluated five locations representing both fatigue and corrosion cracking susceptible areas on the C-141B strategic airlift transport aircraft. Repairs using either boron/epoxy or graphite/epoxy are beneficial for crack retardation, end fastener effect relief, and field stress reduction. The most obvious time saving feature of these repairs is that no fastener removal or installation is involved. Extensive structural analysis utilizing finite element modeling was done to ensure that the repair design not only would have the requisite strength and durability but also would reduce the inspection burden after the aircraft was returned to service. A test program was also undertaken to substantiate the analytical investigation. Typical results from the finite element models as well as the specimen and component tests will be presented. Finally, the step-by-step procedure by which an actual boron/epoxy repair was applied to a fatigue crack on a C-141 center wing will be reported and "lessons learned" will summarize the benefits of applying the technology. RP CHRISTIAN, TF (reprint author), WARNER ROBINS AIR LOGIST CTR,DIV SOF FIXED WING,ROBINS AFB,GA 31098, USA. NR 0 TC 6 Z9 6 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 MAY-JUN PY 1992 VL 29 IS 3 BP 470 EP 476 DI 10.2514/3.46185 PG 7 WC Engineering, Aerospace SC Engineering GA HX252 UT WOS:A1992HX25200027 ER PT J AU LEE, CE NEULAND, ME TEAFORD, HG VILLACIS, BF DIXON, PS VALTIER, S YEH, CH FOURNIER, DC CHARLESWORTH, EN AF LEE, CE NEULAND, ME TEAFORD, HG VILLACIS, BF DIXON, PS VALTIER, S YEH, CH FOURNIER, DC CHARLESWORTH, EN TI INTERLEUKIN-6 IS RELEASED IN THE CUTANEOUS RESPONSE TO ALLERGEN CHALLENGE IN ATOPIC INDIVIDUALS SO JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY LA English DT Article DE IL-6, IL-2; INTERLEUKINS; LATE-PHASE RESPONSE; BLISTER CHAMBER; ALLERGIC CUTANEOUS RESPONSE ID PLATELET-ACTIVATING FACTOR; MAST-CELLS; HUMAN EOSINOPHILS; MEDIATOR RELEASE; HISTAMINE; CYTOKINES; IGE; LYMPHOKINES; TRYPTASE; LUNG AB The mechanisms responsible for cutaneous response to antigen are complex. Interleukin-1 (IL-1) and interleukin-6 (IL-6) are proinflammatory cytokines that share many properties. Previous studies with a blister-chamber model have demonstrated IL-1 to be produced in the cutaneous response to antigen. Since IL-2 production by activated T cells and IL-6 production by macrophages are both stimulated by IL-1, we hypothesized that IL-2 and IL-6 may be involved in the cutaneous late-phase response (LPR) to antigen. We examined antigen-challenged sites for IL-2 immunoreactivity (ELISA) but found no difference between antigen- and diluent-challenged skin sites (N = 4). Since IL-2 has been demonstrated to be produced in response to IL-1 and IL-1 activity has been demonstrated to be greatest between hours 10 and 12, we speculated that IL-2 might not be detected until after hour 12. We were unable to demonstrate any increase in IL-2 production, even by extending our studies to 24 hours in two subjects. Antigen-challenged, skin blister-chamber fluids from atopic subjects demonstrated the appearance of IL-6 (ELISA) in pooled samples representing hours 1 1/2, 3 1/2, 5 1/2, and 7, but not at diluent control sites (p < 0.05; N = 6). IL-6 reached a median peak of 0.66 ng/ml at 3 1/2 hours. Median levels of IL-6 fell to baseline at 8 hours, followed by a second peak of 0.25 ng/ml at hour 10. Three distinct patterns of IL-6 release were noted: early release of IL-6 followed by a sustained slower rise that peaked at hour 9 before declining to baseline levels at 12 hours, early release of IL-6 followed by a fall to baseline levels at hours 7 to 9 with a second smaller peak at hours 9 to 11, and isolated early release of IL-6. Early IL-6 production correlated with late histamine production (R = 0.801; p = 0.06), and late IL-6 production correlated with eosinophil influx (R = 0.813; p = 0.05). The area of the LPR at skin test sites correlated with early IL-6 peak levels (R = 0.977; p = 0.004) and with total early IL-6 production (R = 0.885; p = 0.05), but not with late IL-6 production. We conclude that IL-6 is released locally in antigen-challenged sites in atopic subjects, that an early monophasic or biphasic release may be observed in individual subjects, and that its degree of early release may play an important role in the pathogenesis of the cutaneous LPR. C1 WILFORD HALL USAF MED CTR,DEPT MED,ALLERGY IMMUNOL SERV,LACKLAND AFB,TX 78236. WILFORD HALL USAF MED CTR,INVEST DIRECTORATE CLIN,LACKLAND AFB,TX 78236. UNIV TEXAS,MED BRANCH,GALVESTON,TX 77550. NR 35 TC 38 Z9 38 U1 0 U2 2 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 1992 VL 89 IS 5 BP 1010 EP 1020 DI 10.1016/0091-6749(92)90224-P PG 11 WC Allergy; Immunology SC Allergy; Immunology GA HU542 UT WOS:A1992HU54200012 PM 1583243 ER PT J AU ARMBRUSTER, DA KROLAK, JM AF ARMBRUSTER, DA KROLAK, JM TI SCREENING FOR DRUGS OF ABUSE WITH THE ROCHE ONTRAK ASSAYS SO JOURNAL OF ANALYTICAL TOXICOLOGY LA English DT Article ID COCAINE METABOLITE ASSAYS; KDI QUIK TEST; URINE; VALIDITY C1 USAF,DIV EPIDEMIOL RES,AEROSP MED DIRECTORATE,ARMSTRONG LAB,BROOKS AFB,TX 78235. RP ARMBRUSTER, DA (reprint author), USAF,DIV DRUG TESTING,AEROSP MED DIRECTORATE,ARMSTRONG LAB,BROOKS AFB,TX 78235, USA. NR 11 TC 31 Z9 32 U1 0 U2 1 PU PRESTON PUBLICATIONS INC PI NILES PA 7800 MERRIMAC AVE PO BOX 48312, NILES, IL 60648 SN 0146-4760 J9 J ANAL TOXICOL JI J. Anal. Toxicol. PD MAY-JUN PY 1992 VL 16 IS 3 BP 172 EP 175 PG 4 WC Chemistry, Analytical; Toxicology SC Chemistry; Toxicology GA HW175 UT WOS:A1992HW17500008 PM 1522711 ER PT J AU MELTON, DW PERRAM, GP ROH, WB AF MELTON, DW PERRAM, GP ROH, WB TI COLLISIONAL DYNAMICS OF THE BRF B3-PI(0+) STATE .1. ELECTRONIC QUENCHING SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID SPECTRUM AB Pulsed laser induced fluorescence techniques have been used to study electronic quenching of the B(3)PI(0+) state of bromine monofluoride. BrF(B) deactivation rate coefficients were determined at room temperature for vibrational levels upsilon' = 2, 5, and 6 and for the following collision partners: Ar, SF6, CF4, N2, O2, CO2, and Br2. The quenching rate coefficients ranged from < 6 x 10(-14) cm3/molecule s for Ar to 6.9 x 10(-11) cm3/molecule s for Br2. The radiative lifetime for upsilon' = 5 was determined as tau(r) = 59.6 +/- 0.4-mu-s. Double exponential decays were observed with molecular oxygen, indicating two distinct mechanisms for collisional deactivation. The BrF(B-X) total fluorescence increases at early times when the collision partner SF6 is added. This result is attributed to efficient vibrational relaxation to the states upsilon' = 1 and 0 which are detected most efficiently. C1 USAF,INST TECHNOL,DEPT ENGN PHYS,WRIGHT PATTERSON AFB,OH 45433. NR 23 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 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD MAY 1 PY 1992 VL 96 IS 9 BP 6666 EP 6671 DI 10.1063/1.462605 PG 6 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA HR467 UT WOS:A1992HR46700035 ER PT J AU HOFMANN, GE DREWS, MR SCOTT, RT NAVOT, D HELLER, D DELIGDISCH, L AF HOFMANN, GE DREWS, MR SCOTT, RT NAVOT, D HELLER, D DELIGDISCH, L TI EPIDERMAL GROWTH-FACTOR AND ITS RECEPTOR IN HUMAN IMPLANTATION TROPHOBLAST - IMMUNOHISTOCHEMICAL EVIDENCE FOR AUTOCRINE PARACRINE FUNCTION SO JOURNAL OF CLINICAL ENDOCRINOLOGY & METABOLISM LA English DT Article ID HUMAN CHORIONIC-GONADOTROPIN; FETAL MEMBRANES; HUMAN-PLACENTA; BINDING-SITES; PREGNANCY; DIFFERENTIATION; DECIDUA; EMBRYOS; CELLS AB Epidermal growth factor (EGF) and its receptor (EGF-R) were immunohistochemically localized in trophoblast during human implantation from intrauterine and ectopic pregnancies. EGF immunostaining was absent to light in the cytotrophoblast (CT), light to moderate in intermediate trophoblast (IT), and intense in the syncytiotrophoblast (ST). In ST, EGF immunostaining was found mostly in the cytoplasm; however, staining of the plasma membrane was also noted. Immunostaining for the EGF-R was absent to light in the CT and moderate to intense in the IT. Immunostaining for the EGF-R was intense in the ST, with moderate staining in the cytoplasm and intense staining in the plasma membrane. Staining was most intense on the microvilli of the ST. Additionally, EGF-R immunostaining could be demonstrated on nuclear membranes. The increase in the intensity of the immunostaining for both EGF and EGF-R noted in CT, IT, and ST suggests a differentiated expression of this receptor-ligand system in human trophoblast and provides evidence for an autocrine/paracrine role for EGF in trophoblast function. The presence of this receptor-ligand system during early human implantation strongly supports a role for EGF and the EGF-R in embryo-uterine signalling and the implantation process. C1 MT SINAI MED CTR, DEPT OBSTET & GYNECOL, NEW YORK, NY 10029 USA. MT SINAI MED CTR, DEPT PATHOL, NEW YORK, NY 10029 USA. USAF, DEPT OBSTET & GYNECOL, LACKLAND AFB, TX 78236 USA. NR 29 TC 53 Z9 53 U1 0 U2 0 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 MAY PY 1992 VL 74 IS 5 BP 981 EP 988 DI 10.1210/jc.74.5.981 PG 8 WC Endocrinology & Metabolism SC Endocrinology & Metabolism GA HQ472 UT WOS:A1992HQ47200006 PM 1569175 ER PT J AU HILL, JC GRIMWOOD, RE PARSONS, DS AF HILL, JC GRIMWOOD, RE PARSONS, DS TI TREATMENT OF CHRONIC EROSIONS OF JUNCTIONAL EPIDERMOLYSIS-BULLOSA WITH HUMAN EPIDERMAL ALLOGRAFTS SO JOURNAL OF DERMATOLOGIC SURGERY AND ONCOLOGY LA English DT Article ID CULTURED EPITHELIAL AUTOGRAFTS; SUCCESSFUL ENGRAFTMENT; SKIN ULCERS; KERATINOCYTES; CELLS; GROWTH AB We have successfully treated chronic central facial erosions of a patient with junctional epidermolysis bullosa using cultured epidermal allografts. Keratinocytes isolated from a skin biopsy of the patient's biological mother were used to generate the epidermal allografts. Significant re-epithelialization occurred during the course of four grafting procedures. Cultured epidermal allografts appear to be a promising method for treatment of chronic erosions of junctional epidermolysis bullosa. C1 WILFORD HALL USAF MED CTR,DEPT DERMATOL,LACKLAND AFB,TX 78236. WILFORD HALL USAF MED CTR,DEPT OTOLARYNGOL,LACKLAND AFB,TX 78236. RP HILL, JC (reprint author), BROOKE ARMY MED CTR,DERMATOL SERV,FT SAM HOUSTON,TX 78234, USA. NR 20 TC 14 Z9 14 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 MAY PY 1992 VL 18 IS 5 BP 396 EP 400 PG 5 WC Oncology; Dermatology; Surgery SC Oncology; Dermatology; Surgery GA HU597 UT WOS:A1992HU59700006 PM 1607462 ER PT J AU HATFIELD, K BURRIS, D STAUFFER, TB ZIEGLER, J AF HATFIELD, K BURRIS, D STAUFFER, TB ZIEGLER, J TI THEORY AND EXPERIMENTS ON SUBSURFACE CONTAMINANT SORPTION SYSTEMS SO JOURNAL OF ENVIRONMENTAL ENGINEERING-ASCE LA English DT Article AB Subsurface sorption systems (SSS) are zones created within aquifers to enhance the contaminant sorptive capabilities of the porous media. These systems could reduce contaminant mobility by as much as three orders of magnitude, thus delaying contaminant arrival and reducing maximum concentrations downgradient. Reduced contaminant mobility may also allow time for microbial and abiotic degradation reactions to occur. A few investigators explored the use of cationic surfactants in sorption zones. There are limitations to the use of these surfactants, namely reliance upon cation exchange sites, limited contaminant sorption ability, and their biocidal activity. The possible use of nontoxic, water-insoluble, non-aqueous phase liquids (NAPL) to form SSSs is examined. Experimental results are presented for a bench-scale system constructed with sand that is partially saturated with a sorbing NAPL (SNAPL). Residual SNAPL saturations, aqueous phase relative permeabilities, and capture efficiency for a hydrophobic organic contaminant (1-methylnaphthalene) are determined for the sorption zone. An effective SSS is established in the experimental system. In addition to experimental work, this paper introduces the concept of "effective retardation" as a design aid. An application of the concept produces parametric expressions of system performance in terms of residual SNAPL saturation, partition coefficients, and permeabilities. C1 ENGN & SERV LAB,TYNDALL AFB,FL 32403. RP HATFIELD, K (reprint author), UNIV FLORIDA,DEPT CIVIL ENGN,GAINESVILLE,FL 32611, USA. NR 14 TC 6 Z9 6 U1 0 U2 1 PU ASCE-AMER SOC CIVIL ENGINEERS 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 MAY-JUN PY 1992 VL 118 IS 3 BP 322 EP 337 DI 10.1061/(ASCE)0733-9372(1992)118:3(322) PG 16 WC Engineering, Environmental; Engineering, Civil; Environmental Sciences SC Engineering; Environmental Sciences & Ecology GA HV096 UT WOS:A1992HV09600003 ER PT J AU HICKS, KD WIESEL, WE AF HICKS, KD WIESEL, WE TI AUTONOMOUS ORBIT DETERMINATION SYSTEM FOR EARTH SATELLITES SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS LA English DT Article ID NAVIGATION AB A new system for autonomous satellite navigation using only horizon trackers and star sensors is developed and investigated. Simulations employing performance characteristics of off-the-shelf hardware have demonstrated that the algorithm presented is capable of subkilometer accuracy. Unlike many previous studies, however, this system is not limited to the determination of an Earth satellite's current position. By using a two-step technique combined with a general perturbations model, this method allows the air-drag effects on the orbit to be estimated and incorporated into future position predictions. This is accomplished vis a simple, yet accurate, modification to the perturbations equations. C1 USAF,INST TECHNOL,DEPT AERONAUT & ASTRONAUT,WRIGHT PATTERSON AFB,OH 45431. NR 17 TC 10 Z9 11 U1 1 U2 5 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 1992 VL 15 IS 3 BP 562 EP 566 DI 10.2514/3.20876 PG 5 WC Engineering, Aerospace; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA HU736 UT WOS:A1992HU73600003 ER PT J AU COLE, JW CALICO, RA AF COLE, JW CALICO, RA TI NONLINEAR OSCILLATIONS OF A CONTROLLED PERIODIC SYSTEM SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS LA English DT Article AB The motion of a spinning symmetric satellite in an elliptic orbit is examined. The linearized equations of motion for the system have periodic coefficients, and a modal control scheme for such systems is used to stabilize the linearized equations. The nonlinear behavior of both the controlled and uncontrolled system is examined using Poincare maps. The behavior of the nonlinear controlled system is shown to depend on the controller gain with stable periodic solutions appearing at higher gains. C1 USAF,INST TECHNOL,EN,MS,WRIGHT PATTERSON AFB,OH 45433. RP COLE, JW (reprint author), MINUTEMAN GUIDANCE & CONTROL LAB,HILL AFB,UT 84056, USA. NR 6 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 0731-5090 J9 J GUID CONTROL DYNAM JI J. Guid. Control Dyn. PD MAY-JUN PY 1992 VL 15 IS 3 BP 627 EP 633 DI 10.2514/3.20884 PG 7 WC Engineering, Aerospace; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA HU736 UT WOS:A1992HU73600011 ER PT J AU DEHART, MM BOWYER, MW SILENAS, R AF DEHART, MM BOWYER, MW SILENAS, R TI LEIOMYOSARCOMA OF THE SKIN AND SUBCUTANEOUS TISSUE OF THE HAND AND WRIST SO JOURNAL OF HAND SURGERY-AMERICAN VOLUME LA English DT Article AB Leiomyosarcoma of the skin and subcutaneous tissues is a rare tumor of smooth muscle origin. A case report of leiomyosarcoma of the hand is presented. The lesion was treated with wide local excision and has shown no recurrence in 2 years of follow-up. RP DEHART, MM (reprint author), WILFORD HALL USAF MED CTR,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 MAY PY 1992 VL 17A IS 3 BP 481 EP 483 DI 10.1016/0363-5023(92)90356-T PG 3 WC Orthopedics; Surgery SC Orthopedics; Surgery GA HU590 UT WOS:A1992HU59000018 PM 1613226 ER PT J AU GREENDYKE, SD WILSON, M SHEPLER, TR AF GREENDYKE, SD WILSON, M SHEPLER, TR TI ANTERIOR WRIST GANGLIA FROM THE SCAPHOTRAPEZIAL JOINT SO JOURNAL OF HAND SURGERY-AMERICAN VOLUME LA English DT Article AB In this series of 104 anterior wrist ganglia evaluated, 35 were found to arise from the scaphotrapezial joint, 1 from the metacarpotrapezial joint, and 68 from the radioscaphoid joint. After dissection of the cyst and identification of the joint of origin, the ganglion was removed and the joint was incised. Of the patients with scaphotrapezial ganglia, 29 were available for follow-up evaluation with a mean follow-up time of 67 months. Relief of symptoms was noted in 93%, wrist motion was maintained in all patients, and there were two recurrences. RP GREENDYKE, SD (reprint author), WILFORD HALL USAF MED CTR,SGHSB,LACKLAND AFB,TX 78236, USA. NR 0 TC 11 Z9 11 U1 0 U2 1 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 MAY PY 1992 VL 17A IS 3 BP 487 EP 490 PG 4 WC Orthopedics; Surgery SC Orthopedics; Surgery GA HU590 UT WOS:A1992HU59000020 PM 1613228 ER PT J AU CARPENTER, TL CHASTAIN, DO AF CARPENTER, TL CHASTAIN, DO TI FACULTATIVE MYIASIS BY MEGASELIA SP (DIPTERA, PHORIDAE) IN TEXAS - A CASE-REPORT SO JOURNAL OF MEDICAL ENTOMOLOGY LA English DT Note DE INSECTA; MEGASELIA; MYIASIS AB Facultative myiasis caused by larval Megaselia sp. is reported in a human in Texas. On two occasions during 24 h, the youth experienced a "crawling sensation deep in [his] throat" which caused him to cough, expelling a living Megaselia sp. larva. The site of the infestation was presumed to be the sinuses or upper respiratory tract. The symptoms resolved upon expulsion of the larvae, and no additional complications were observed in the patient. C1 USAF,SCH AEROSP MED,DIV EPIDEMIOL,DIV HUMAN SYST,AIR FORCE SYST COMMAND,BROOKS AFB,TX 78235. NR 13 TC 9 Z9 9 U1 0 U2 0 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 1992 VL 29 IS 3 BP 561 EP 563 PG 3 WC Entomology; Veterinary Sciences SC Entomology; Veterinary Sciences GA HR477 UT WOS:A1992HR47700025 PM 1625307 ER PT J AU NKYA, WMMM WARREN, RQ WOLF, H HENDRIX, CW TESHA, J REDFIELD, RR MELCHER, GP BURKE, DS KANDA, P KENNEDY, RC AF NKYA, WMMM WARREN, RQ WOLF, H HENDRIX, CW TESHA, J REDFIELD, RR MELCHER, GP BURKE, DS KANDA, P KENNEDY, RC TI FINE SPECIFICITY OF THE HUMORAL IMMUNE-RESPONSE TO HIV-1 GP-160 IN HIV-1 INFECTED INDIVIDUALS FROM TANZANIA SO JOURNAL OF MEDICAL VIROLOGY LA English DT Article DE ANTIBODIES TO HIV-1 GP160; AIDS; SYNTHETIC PEPTIDE EPITOPES; GP120; GP41; V3 ID HUMAN-IMMUNODEFICIENCY-VIRUS; IMMUNODOMINANT EPITOPE; SYNTHETIC PEPTIDES; NEUTRALIZING ANTIBODIES; ENVELOPE GLYCOPROTEINS; PROTEIN; GP41; CHIMPANZEES; SEQUENCE; REGION AB A total of 160 sera from HIV-1 infected individuals from Tanzania were examined for their fine specificity characteristics relative to 9 synthetic peptides that define HIV-1 gp 160 epitopes. Immunorecessive and immunodominant epitopes were identified in both gp 120 and gp41 based on serologic reactivity of these HIV-1 infected sera. A significant difference in fine specificity among HIV-1 infected individuals from Tanzania and the United States was observed for an immunodominant gp41 epitope. No significant differences in reactivity among asymptomatic vs. symptomatic HIV-1 infected individuals were detected for the selected HIV-1 gp 160 epitopes defined by these peptides. The majority of sera from HIV-1 infected Tanzanians contained antibodies that recognized a peptide corresponding to the V3 region of gp120 from the HIV-1 MN isolate. These data suggest that regional isolates of HIV-1 may exist in Tanzania that differ from HIV-1 isolated in the United States. However, based on serology, HIV-1 isolates exhibiting sequences with HIV-1 MN V3 similarity may also be prevalent in Tanzania. The results of this study may be useful for the design of more effective AIDS diagnostic and therapeutic products for use worldwide. C1 SW FDN BIOMED RES,CTR AIDS RES,POB 28147,SAN ANTONIO,TX 78228. KILIMANJARO CHRISTIAN MED CTR,MOSHI,TANZANIA. WALTER REED INST RES,DEPT RETROVIROL RES,ROCKVILLE,MD. WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. WALTER REED INST RES,DIV RETROVIROL,ROCKVILLE,MD. RI Hendrix, Craig/G-4182-2014; OI Hendrix, Craig/0000-0002-5696-8665; /0000-0002-5704-8094 FU NIAID NIH HHS [P30 AI28696, UO1 AI26462] NR 27 TC 1 Z9 1 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 0146-6615 J9 J MED VIROL JI J. Med. Virol. PD MAY PY 1992 VL 37 IS 1 BP 61 EP 66 DI 10.1002/jmv.1890370111 PG 6 WC Virology SC Virology GA HM688 UT WOS:A1992HM68800010 PM 1619399 ER PT J AU HUGHES, WG HOWARD, CW AF HUGHES, WG HOWARD, CW TI SIMULTANEOUS SPLIT-THICKNESS SKIN-GRAFTING AND PLACEMENT OF ENDOSTEAL IMPLANTS IN THE EDENTULOUS MANDIBLE - A PRELIMINARY-REPORT SO JOURNAL OF ORAL AND MAXILLOFACIAL SURGERY LA English DT Article RP HUGHES, WG (reprint author), DEPT ORAL & MAXILLOFACIAL SURG,MED GRP 5,SAC SGD,10 MISSILE AVE,MINOT AFB,ND 58075, USA. NR 17 TC 10 Z9 10 U1 0 U2 0 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 1992 VL 50 IS 5 BP 448 EP 451 PG 4 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA HR226 UT WOS:A1992HR22600006 PM 1573480 ER PT J AU LINK, MJO KAUGARS, GE BURNS, JC AF LINK, MJO KAUGARS, GE BURNS, JC TI COMPARISON OF ORAL CARCINOMAS IN SMOKELESS TOBACCO USERS AND NONUSERS SO JOURNAL OF ORAL AND MAXILLOFACIAL SURGERY LA English DT Article ID VERRUCOUS CARCINOMA; CANCER; TUMORS C1 DEPT ORAL PATHOL,MACDILL AFB,FL. VIRGINIA COMMONWEALTH UNIV,MED COLL VIRGINIA,RICHMOND,VA 23298. RP LINK, MJO (reprint author), DEPT ORAL & MAXILLOFACIAL SURG,MED GRP 56,TAC MGD,MACDILL AFB,FL 33608, USA. RI Burns, Jane/J-6167-2015 NR 16 TC 8 Z9 9 U1 0 U2 0 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 1992 VL 50 IS 5 BP 452 EP 455 PG 4 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA HR226 UT WOS:A1992HR22600007 ER PT J AU RITCHEY, ML LALLY, KP HAASE, GM SHOCHAT, SJ KELALIS, PP AF RITCHEY, ML LALLY, KP HAASE, GM SHOCHAT, SJ KELALIS, PP TI SUPERIOR MESENTERIC-ARTERY INJURY DURING NEPHRECTOMY FOR WILMS-TUMOR SO JOURNAL OF PEDIATRIC SURGERY LA English DT Article DE WILMS TUMOR, NEPHRECTOMY; SURGICAL COMPLICATIONS, SUPERIOR MESENTERIC ARTERY INJURY C1 WILFORD HALL USAF MED CTR,DEPT UROL,LACKLAND AFB,TX 78236. WILFORD HALL USAF MED CTR,DEPT PEDIAT SURG,LACKLAND AFB,TX 78236. CHILDRENS HOSP,DEPT PEDIAT SURG,DENVER,CO 80218. STANFORD UNIV,MED CTR,DIV PEDIAT SURG,STANFORD,CA 94305. FU NCI NIH HHS [CA-42326] NR 19 TC 17 Z9 19 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 MAY PY 1992 VL 27 IS 5 BP 612 EP 615 DI 10.1016/0022-3468(92)90460-O PG 4 WC Pediatrics; Surgery SC Pediatrics; Surgery GA HT460 UT WOS:A1992HT46000020 PM 1320674 ER PT J AU SCHAFFRINNA, MG AF SCHAFFRINNA, MG TI CERVICOVAGINAL HUMAN PAPILLOMAVIRUS INFECTION IN ADOLESCENTS AND YOUNG-ADULTS SO JOURNAL OF PEDIATRICS LA English DT Letter RP SCHAFFRINNA, MG (reprint author), USAF, WRIGHT PATTERSON MED CTR, ADOLESCENT MED SERV, WRIGHT PATTERSON AFB, OH 45433 USA. NR 4 TC 0 Z9 0 U1 0 U2 0 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 MAY PY 1992 VL 120 IS 5 BP 837 EP 837 DI 10.1016/S0022-3476(05)80274-4 PG 1 WC Pediatrics SC Pediatrics GA HT981 UT WOS:A1992HT98100046 PM 1315857 ER PT J AU LANG, SA STARR, CB AF LANG, SA STARR, CB TI CASTABLE GLASS-CERAMICS FOR VENEER RESTORATIONS SO JOURNAL OF PROSTHETIC DENTISTRY LA English DT Article AB Porcelain veneer restorations are the usual technique chosen for the placement of esthetic veneer restorations. Cast glass ceramic veneers exhibit properties that make them extremely useful for this dental application. They have a hardness, abrasion resistance, coefficient of thermal expansion, and translucency similar to that of enamel. The use of the lost wax casting technique to provide precise anatomic form and margins allows for increased accuracy during veneer fabrication. Chairside time requirements may be decreased as a result of the improved accuracy inherent in the lost wax casting technique. The dentist's ability to maximize esthetics and decrease chairside time make this a technique likely to see increased use in the future. C1 USAF HOSP,DENT CORPS,PATRICK AFB,FL. USAF,MED CTR,DEPT GEN DENT,WRIGHT PATTERSON AFB,OH 45433. NR 23 TC 5 Z9 5 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 MAY PY 1992 VL 67 IS 5 BP 590 EP 594 DI 10.1016/0022-3913(92)90152-Z PG 5 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA HR466 UT WOS:A1992HR46600003 PM 1527738 ER PT J AU ZANGVIL, A LIN, CC RUH, R AF ZANGVIL, A LIN, CC RUH, R TI MICROSTRUCTURAL STUDIES IN ALKOXIDE-DERIVED MULLITE ZIRCONIA SILICON-CARBIDE WHISKER COMPOSITES SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY LA English DT Article DE MICROSTRUCTURE; MULLITE; ZIRCONIA; SILICON CARBIDE; WHISKERS ID MECHANICAL-PROPERTIES; TOUGHENING BEHAVIOR; SOLID-SOLUTION; SIC-WHISKER; CERAMICS; ALUMINA; NITRIDE; CRYSTALLIZATION; DEFECTS; SPINEL AB Mullite composites toughened with ZrO2 (with or without a MgO or Y2O3 stabilizer) and/or SiC whiskers (SiC(w)) were fabricated by hot-pressing powders prepared from Al, Si, Zr, and Mg(Y) alkoxide precursors by a sol-gel process. Microstructures were studied by using XRD, SEM, and analytical STEM. Pure mullite samples contained prismatic, preferentially oriented mullite grains. However, the addition of ZrO2, as well as the hot-pressing temperature, affected the morphology and grain size in the composites; a fine, uniform, equiaxed microstructure was obtained. The effect of SiC(w) was less pronounced than that of ZrO2. Glassy phases were present in mullite and mullite/SiC(w) composites, but were rarely observed in Al2O3-rich or ZrO2-containing samples. The formation of zircon due to the reaction between ZrO2 and SiO2 and the considerable solid solution of SiO2 in ZrO2 prevented the formation of the glassy phase, whereas the reaction between Al2O3 and MgO in MgO-containing samples formed a spinel phase and also deprived the ZrO2 phase of the stabilizer. Intergranular ZrO2 particles were either monoclinic or tetragonal, depending on size and stabilizer content; small intragranular ZrO2 inclusions were usually tetragonal in structure. C1 UNIV ILLINOIS, DEPT MAT SCI & ENGN, URBANA, IL 61801 USA. USAF, WRIGHT LAB, WRIGHT PATTERSON AFB, OH 45433 USA. RP UNIV ILLINOIS, MAT RES LAB, URBANA, IL 61801 USA. NR 50 TC 13 Z9 13 U1 0 U2 4 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0002-7820 EI 1551-2916 J9 J AM CERAM SOC JI J. Am. Ceram. Soc. PD MAY PY 1992 VL 75 IS 5 BP 1254 EP 1263 DI 10.1111/j.1151-2916.1992.tb05565.x PG 10 WC Materials Science, Ceramics SC Materials Science GA HU733 UT WOS:A1992HU73300030 ER PT J AU LOECKER, TH SCHWARTZ, RS COTTA, CW HICKMAN, JR AF LOECKER, TH SCHWARTZ, RS COTTA, CW HICKMAN, JR TI FLUOROSCOPIC CORONARY-ARTERY CALCIFICATION AND ASSOCIATED CORONARY-DISEASE IN ASYMPTOMATIC YOUNG MEN SO JOURNAL OF THE AMERICAN COLLEGE OF CARDIOLOGY LA English DT Article ID MYOCARDIAL-INFARCTION; IMPROVED SENSITIVITY; DIAGNOSIS; SCINTIGRAPHY; PROBABILITY; AID AB Little is known about the diagnostic significance of coronary artery calcification detected fluoroscopically in apparently healthy young men. This study compared the presence of fluoroscopically detected coronary artery calcification with angiographic coronary artery disease in asymptomatic male military aircrew undergoing noninvasive cardiac screening tests and coronary arteriography for occupational indications. Of 1,466 men screened with coronary fluoroscopy, 613 underwent coronary arteriography because of one or more abnormal noninvasive test results. The mean age (+/- SD) of all subjects screened was 40.2 +/-5 years (range 26 to 65). Significant coronary artery disease (greater-than-or-equal-to 50% diameter stenosis) was found in 104 of the 613 subjects with arteriograms (16.9% disease prevalence). Overall sensitivity and specificity for coronary artery calcification detection of significant disease, based only on those subjects undergoing arteriography, were 66.3% and 77.6%, respectively. For measurable disease (mild plus significant), sensitivity was 60.6% and specificity 85.9%. Positive and negative predictive values were 37.7% and 91.9%, respectively, for significant disease. For measurable disease, positive and negative predictive values were 68.9% and 80.9%, respectively. In these asymptomatic young men, a fluoroscopic examination negative for coronary artery calcification indicated a low risk of significant coronary artery disease, whereas a positive test result (calcification present) substantially increased the likelihood of angiographically significant coronary artery disease. C1 MAYO CLIN & MAYO FDN,DIV CARDIOVASC DIS,ROCHESTER,MN 55905. USAF,SCH AEROSP MED,DIV CLIN SCI,LACKLAND AFB,TX 78236. NR 38 TC 77 Z9 79 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 1992 VL 19 IS 6 BP 1167 EP 1172 PG 6 WC Cardiac & Cardiovascular Systems SC Cardiovascular System & Cardiology GA HR084 UT WOS:A1992HR08400008 PM 1564217 ER PT J AU ABSHIRE, TC BUCHANAN, GR JACKSON, JF SHUSTER, JJ BROCK, B HEAD, D BEHM, F CRIST, WM LINK, M BOROWITZ, M PULLEN, DJ AF ABSHIRE, TC BUCHANAN, GR JACKSON, JF SHUSTER, JJ BROCK, B HEAD, D BEHM, F CRIST, WM LINK, M BOROWITZ, M PULLEN, DJ TI MORPHOLOGICAL, IMMUNOLOGICAL AND CYTOGENETIC STUDIES IN CHILDREN WITH ACUTE LYMPHOBLASTIC-LEUKEMIA AT DIAGNOSIS AND RELAPSE - A PEDIATRIC ONCOLOGY GROUP-STUDY SO LEUKEMIA LA English DT Article ID ACUTE LYMPHOCYTIC-LEUKEMIA; B-CELL LEUKEMIA; T-CELL; BONE-MARROW; GENE REARRANGEMENTS; PROGNOSTIC FACTORS; CLONAL EVOLUTION; LINEAGE SWITCH; CHILDHOOD; EXPRESSION AB The morphologic, immunologic and cytogenetic features of leukemic cells obtained at the time of first bone marrow relapse were compared with those obtained at initial diagnosis in 287 children with acute lymphoblastic leukemia (ALL) who were entered consecutively in a laboratory classification study of the Pediatric Oncology Group (POG). L1 to L2 shifts in French-American-British morphologic subtype were more common than the reverse (81/178 versus 15/61, p < 0.001). A small but marginally significant number of cases acquired cytoplasmic granules at relapse, and 50 cases underwent a shift in periodic acid-Schiff reactivity that slightly favoured positive to negative. Shifts in immunophenotype were relatively rare, although shifts in cases with a pre-B phenotype to early pre-B ALL or vice versa occurred in about a third of pre-B cases. Loss of HLA-DR or the common ALL antigen occurred in 20 and 11% of cases, respectively. Of the 116 cases with analyzable karyotypes at diagnosis and relapse, 36 (31%) showed a change in karyotypes at relapse, usually from normal to pseudodiploid or hyperdiploid. Cytogenetic evidence for the emergence of a new clone after initial diagnosis was found in only one case. Analysis of the correlation of clinical and lymphoblast biologic features with event-free survival after an initial marrow relapse failed to demonstrate any prognostic significance for the changes identified in this study. T-cell immunophenotype proved to be the only factor significantly related to the outcome of retrieval therapy. C1 UNIV TEXAS, SW MED CTR, DALLAS, TX 75230 USA. UNIV MISSISSIPPI, MED CTR, JACKSON, MS 39216 USA. PEDIAT ONCOL GRP, STAT OFF, GAINESVILLE, FL USA. UNIV FLORIDA, DEPT STAT, GAINESVILLE, FL 32611 USA. ST JUDE CHILDRENS RES HOSP, MEMPHIS, TN 38101 USA. UNIV TENNESSEE, CTR HLTH SCI, COLL MED, MEMPHIS, TN 38163 USA. STANFORD UNIV, MED CTR, SCH MED, STANFORD, CA 94305 USA. DUKE UNIV, SCH MED, DURHAM, NC 27706 USA. RP ABSHIRE, TC (reprint author), USAF, MED CTR, KEESLER AFB, MS 39534 USA. FU NCI NIH HHS [CA-33625, CA-29139, CA-15989] NR 59 TC 61 Z9 62 U1 0 U2 1 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 0887-6924 J9 LEUKEMIA JI Leukemia PD MAY PY 1992 VL 6 IS 5 BP 357 EP 362 PG 6 WC Oncology; Hematology SC Oncology; Hematology GA JB141 UT WOS:A1992JB14100001 PM 1534389 ER PT J AU CROSBY, RM HALL, MJ AF CROSBY, RM HALL, MJ TI PSYCHIATRIC EVALUATION OF SELF-REFERRED AND NON-SELF-REFERRED ACTIVE DUTY MILITARY MEMBERS SO MILITARY MEDICINE LA English DT Article AB This study examined 300 cases of active duty Air Force members seen in an Air Force medical center outpatient mental health clinic over a 1-year period. Comparisons were made between self-referred and non-self-referred (commander-directed) patients across several areas, including chief complaints/referral reasons, diagnoses, personality features, dispositions, and numbers of therapy sessions. Results showed significantly different distributions of types of chief complaints, dispositions, and treatment sessions between the two groups, and provided relative proportions of personality types distributed within each group. The dual roles of the military mental health practitioner, as provider for both the organization and the patient, are discussed. RP CROSBY, RM (reprint author), USAF,MED CTR WRIGHT PATTERSON,PSYCHOL TRAINING PROGRAM,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 10 Z9 10 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 MAY PY 1992 VL 157 IS 5 BP 224 EP 229 PG 6 WC Medicine, General & Internal SC General & Internal Medicine GA HT318 UT WOS:A1992HT31800007 PM 1630651 ER PT J AU LEONARD, F AF LEONARD, F TI AMBULANCE USE IN A MILITARY POPULATION - EPIDEMIOLOGY AND IMPLICATIONS SO MILITARY MEDICINE LA English DT Article AB Because no studies have been reported on ambulance use in military populations, a 2-year epidemiologic study of all ambulance responses on Hickam Air Force Base was conducted. Findings included a higher utilization rate and a greater proportion of pediatric patients than might be expected in comparable civilian populations. Serious trauma was uncommon, but a wide spectrum of serious medical emergencies was seen. Advanced life support was indicated in 22% of all responses, and its availability improved patient outcome. Based on these and other findings, recommendations are made for upgrading military prehospital care to meet both base population needs and current civilian community standards. RP LEONARD, F (reprint author), USAF,SCH AEROSP MED,BROOKS AFB,TX 78235, USA. NR 0 TC 2 Z9 2 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 MAY PY 1992 VL 157 IS 5 BP 239 EP 243 PG 5 WC Medicine, General & Internal SC General & Internal Medicine GA HT318 UT WOS:A1992HT31800011 PM 1630655 ER PT J AU GRAYSON, JK AF GRAYSON, JK TI PREVIOUS HEARING-LOSS AND SUSCEPTIBILITY TO FUTURE PERMANENT THRESHOLD SHIFTS SO MILITARY MEDICINE LA English DT Article AB The association between prior hearing losses and susceptibility to future permanent threshold shifts was examined by a matched pairs case-control study. Data were obtained from the United States Air Force Hearing Conservation Data Registry, which contains over three million audiometric records. Cases with permanent hearing losses were matched with normal controls for relative noise exposure intensity, years of exposure, and age. Based on analysis with normal or abnormal baseline hearing as the risk factor, cases with abnormal initial hearing were no more likely than controls to develop future permanent threshold shifts (odds ratio = 1.06, 95% confidence interval 0.61-1.85). RP GRAYSON, JK (reprint author), OEMO,ARMSTRONG LAB,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 MAY PY 1992 VL 157 IS 5 BP 248 EP 249 PG 2 WC Medicine, General & Internal SC General & Internal Medicine GA HT318 UT WOS:A1992HT31800013 PM 1630656 ER PT J AU CESPEDES, RD AF CESPEDES, RD TI AN ATYPICAL CASE OF BRUCELLOSIS IN A TURKISH NATIONAL SO MILITARY MEDICINE LA English DT Article AB Brucellosis is an endemic disease in many of the countries in which military personnel are stationed, including the Middle East, where thousands are deployed. The signs and symptoms of brucellosis are often nonspecific and diagnosis requires a high index of suspicion. This case report involves a Turkish national with an unusual febrile illness, subsequently diagnosed as brucellosis. The presentation, diagnosis, and treatment are discussed. The special relevance to the military physician is emphasized. RP CESPEDES, RD (reprint author), WILFORD HALL USAF MED CTR,DEPT UROL,LACKLAND AFB,TX 78236, 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 MAY PY 1992 VL 157 IS 5 BP 268 EP 271 PG 4 WC Medicine, General & Internal SC General & Internal Medicine GA HT318 UT WOS:A1992HT31800020 PM 1630663 ER PT J AU GREENBERG, MK MCVEY, AL HAYES, T AF GREENBERG, MK MCVEY, AL HAYES, T TI SEGMENTAL MOTOR INVOLVEMENT IN HERPES-ZOSTER - AN EMG STUDY SO NEUROLOGY LA English DT Note C1 WILFORD HALL USAF MED CTR,DEPT NEUROL,SGHMN,LACKLAND AFB,TX 78236. WILFORD HALL USAF MED CTR,DEPT DERMATOL,LACKLAND AFB,TX 78236. NR 5 TC 19 Z9 19 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 MAY PY 1992 VL 42 IS 5 BP 1122 EP 1123 PG 2 WC Clinical Neurology SC Neurosciences & Neurology GA HT665 UT WOS:A1992HT66500042 PM 1579243 ER PT J AU ROTHMAN, LS AF ROTHMAN, LS TI ATMOSPHERIC PROPAGATION OF RADIATION - MICROWAVE THROUGH VISIBLE SO ONDE ELECTRIQUE LA English DT Article; Proceedings Paper CT STUDIES CONF ON ELECTROMAGNETIC PROPAGATION IN THE ATMOSPHERE FROM THE DECAMETER TO THE ANGSTROM CY OCT 00-10, 1991 CL UNIV RENNES, RENNES, FRANCE SP SOC ELECTRICIENS & ELECTRONICIENS, CTR ELECTR ARMEMENT HO UNIV RENNES AB The Optical Environment Division of the Air Force Geophysics Laboratory has been engaged throughout its history in the development of computer codes and databases to facilitate spectral modeling of atmospheric transmission and radiative processes. Major updates to the computer codes have recently been made available. FASCODE 3 (for high resolution line-by-line calculations), LOWTRAN 7 (moderate resolution band-model code), and MODTRAN (an intermediate resolution band-model code). In addition, a new edition of HITRAN, the spectroscopic molecular- absorption database, has become available. HITRAN now contains greatly improved data for 30 molecular species from zero wavenumber through the visible region. There are also numerous bands of species such as the chlorofluorocarbons contained as cross-section data on the HITRAN compilation. These models and database have a significant impact on spectral simulations and remote sensing capabilities. This paper will review these recent developments and present some examples of current applications. RP ROTHMAN, LS (reprint author), USAF,DIV OPT ENVIRONM,GEOPHYS LAB,BEDFORD,MA 01731, USA. NR 0 TC 1 Z9 1 U1 1 U2 1 PU RGE SA PI PARIS 15 PA 48 RUE DE LA PROCESSION, 75015 PARIS 15, FRANCE SN 0030-2430 J9 ONDE ELECTR JI Onde Electr. PD MAY-JUN PY 1992 VL 72 IS 3 BP 39 EP 41 PG 3 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA HW805 UT WOS:A1992HW80500008 ER PT J AU SKAPEK, SX JONES, WS HOFFMAN, KM KUSKIE, MR AF SKAPEK, SX JONES, WS HOFFMAN, KM KUSKIE, MR TI SINUSITIS AND BACTEREMIA CAUSED BY FLAVOBACTERIUM-MENINGOSEPTICUM IN A 16-YEAR-OLD WITH SHWACHMAN DIAMOND SYNDROME SO PEDIATRIC INFECTIOUS DISEASE JOURNAL LA English DT Note DE SINUSITIS; FLAVOBACTERIUM-MENINGOSEPTICUM; SHWACHMAN DIAMOND SYNDROME ID SUSCEPTIBILITY; SEPSIS RP SKAPEK, SX (reprint author), WILFORD HALL USAF MED CTR,DEPT PEDIAT,LACKLAND AFB,TX 78236, USA. NR 20 TC 3 Z9 3 U1 0 U2 1 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 MAY PY 1992 VL 11 IS 5 BP 411 EP 413 PG 3 WC Immunology; Infectious Diseases; Pediatrics SC Immunology; Infectious Diseases; Pediatrics GA HU657 UT WOS:A1992HU65700016 PM 1630865 ER PT J AU FISTEL, SH RUEDAPEDRAZA, E ISHAK, KG GOODMAN, ZD AF FISTEL, SH RUEDAPEDRAZA, E ISHAK, KG GOODMAN, ZD TI A 29-YEAR-OLD MAN WITH THE ACQUIRED-IMMUNODEFICIENCY-SYNDROME AND LIVER DYSFUNCTION SO SEMINARS IN LIVER DISEASE LA English DT Review ID PNEUMOCYSTIS-CARINII INFECTION; VIRUS-INFECTION; SYNDROME AIDS; HEPATITIS; DISEASE C1 WALTER REED ARMY MED CTR,DEPT PATHOL,WASHINGTON,DC 20307. USAF,INST PATHOL,DEPT HEPAT & GASTROINTESTINAL PATHOL,WASHINGTON,DC 20306. USAF,INST PATHOL,VET ADM,SPECIAL REFERENCE LAB PATHOL,WASHINGTON,DC 20306. NR 25 TC 0 Z9 0 U1 0 U2 0 PU THIEME MEDICAL PUBL INC PI NEW YORK PA 381 PARK AVE SOUTH, NEW YORK, NY 10016 SN 0272-8087 J9 SEMIN LIVER DIS JI Semin. Liver Dis. PD MAY PY 1992 VL 12 IS 2 BP 219 EP 225 DI 10.1055/s-2007-1007394 PG 7 WC Gastroenterology & Hepatology SC Gastroenterology & Hepatology GA JE346 UT WOS:A1992JE34600014 PM 1636124 ER PT J AU ENSLEY, D NELSON, DE AF ENSLEY, D NELSON, DE TI EXTRAPOLATION OF MACKEY-GLASS DATA USING CASCADE CORRELATION SO SIMULATION LA English DT Article DE ONTOGENIC NEURAL NETWORKS; MACKEY-GLASS DATA; SINUSOIDAL ACTIVATION; SIGMOIDAL ACTIVATION AB Attempting to find near-optimal architectures, ontogenic neural networks develop their own architectures as they train. As part of a project entitled "Ontogenic Neural Networks for the Prediction of Chaotic Time Series," this paper presents findings of a ten-week research period on using the Cascade Correlation ontogenic neural network to extrapolate (predict) a chaotic time series generated from the Mackey-Glass equation. During training the neural network forms a model of the Mackey-Glass equation by observing its behavior. Then the neural network is used to simulate the function in order to extrapolate it, that is, to predict its behavior beyond the space observed by the neural network. Truer, more informative measures of extrapolation accuracy than currently popular measures are presented. The effects of some network parameters on extrapolation accuracy were investigated. Sinusoidal activation functions turned out to be best for our data set. The best range for sigmoidal activation functions was [-1,+1]. Though surprisingly good extrapolations have been obtained, there remain pitfalls. These pitfalls are discussed along with possible methods for avoiding them. C1 WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433. RP ENSLEY, D (reprint author), AUBURN UNIV,DEPT ELECT ENGN,200 BROUN HALL,AUBURN,AL 36849, USA. NR 8 TC 12 Z9 12 U1 0 U2 0 PU SIMULATION COUNCILS INC PI SAN DIEGO PA PO BOX 17900, SAN DIEGO, CA 92117 SN 0037-5497 J9 SIMULATION JI Simulation PD MAY PY 1992 VL 58 IS 5 BP 333 EP 339 DI 10.1177/003754979205800506 PG 7 WC Computer Science, Interdisciplinary Applications; Computer Science, Software Engineering SC Computer Science GA HX900 UT WOS:A1992HX90000007 ER PT J AU CARPER, WR PFLUG, JL ELIAS, AM WILKES, JS AF CARPER, WR PFLUG, JL ELIAS, AM WILKES, JS TI C-13 NMR AND VISCOSITY STUDIES OF IONIC STRUCTURE IN 1-METHYL-3-ETHYLIMIDAZOLIUM CHLORIDE-ALCL3 MOLTEN-SALTS SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article ID NUCLEAR MAGNETIC-RESONANCE; SPIN-LATTICE RELAXATION; CHEMICAL-EXCHANGE; LIQUIDS; AL-27; SPECTROSCOPY; MELTS; ROTATION; BARRIERS; ALCL3 AB Room-temperature molten salts consisting of 1-methyl-3-ethylimidazolium chloride ((MEI)Cl), AlCl3, and NaCl (buffer) have been investigated using C-13 NMR relaxation methods. Results of Al-27 NMR, IR, and theoretical studies of (MEI)Cl-AlCl3 melts initially supported a stack model in which anions were located between stacked "parallel" MEI+ ring planes. This was followed by a hydrogen-bonding model where anions bonded with the hydrogens on the C2, C4, and C5 members of the MEI+ ring. The present C-13 NMR and viscosity study indicates that AlCl4- in the melt forms a complex by interacting with the C2, C4, and C5 hydrogens on the MEI+ ring. RP CARPER, WR (reprint author), USAF ACAD,FRANK J SEILER RES LAB,COLORADO SPRINGS,CO 80840, USA. NR 49 TC 28 Z9 28 U1 5 U2 11 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 APR 30 PY 1992 VL 96 IS 9 BP 3828 EP 3833 DI 10.1021/j100188a048 PG 6 WC Chemistry, Physical SC Chemistry GA HR490 UT WOS:A1992HR49000048 ER PT J AU DANA, V MANDIN, JY CAMYPEYRET, C FLAUD, JM CHEVILLARD, JP HAWKINS, RL DELFAU, JL AF DANA, V MANDIN, JY CAMYPEYRET, C FLAUD, JM CHEVILLARD, JP HAWKINS, RL DELFAU, JL TI MEASUREMENTS OF COLLISIONAL LINEWIDTHS IN THE NU-2 BAND OF H2O FROM FOURIER-TRANSFORMED FLAME SPECTRA SO APPLIED OPTICS LA English DT Article DE H2O EMISSION SPECTRA; NU-2 BAND; PREMIXED AIR-METHANE FLAME; HIGH TEMPERATURE COLLISIONAL WIDTHS ID SELF-BROADENING COEFFICIENTS; 720-NM WAVELENGTH REGION; RO-VIBRATIONAL LEVELS; WATER-VAPOR; N2-BROADENING COEFFICIENTS; HIGH-RESOLUTION; O-16 LINES; TEMPERATURE-DEPENDENCE; CM-1; OXYGEN AB The collisional widths of more than 200 transitions belonging to the nu(2) band of the H2O molecule were measured by using the Fourier-transformed spectra of an air-methane flame at 2000 K. A nonlinear least-squares method was used to determine the line widths for a wide range of J (up to 28) and K(a) (up to 14) quantum number values. Finally, an analysis of the results as functions of J and K(a) is presented. C1 CTR RECH CHIM COMBUST & HAUTES TEMP,F-45071 ORLEANS 02,FRANCE. USAF,DIV OPT PHYS,GEOPHYS DIRECTORATE,PHILLIPS LAB,BEDFORD,MA 01731. RP DANA, V (reprint author), UNIV PARIS 06,CNRS,PHYS MOLEC & APPLICAT LAB,TOUR 13,BTE 76,4 PL JUSSIEU,F-75252 PARIS 05,FRANCE. NR 31 TC 31 Z9 31 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 APR 20 PY 1992 VL 31 IS 12 BP 1928 EP 1936 PG 9 WC Optics SC Optics GA HP607 UT WOS:A1992HP60700009 PM 20720840 ER PT J AU LATHAM, WP TILTON, ML FERGUSON, TR AF LATHAM, WP TILTON, ML FERGUSON, TR TI ANALYTIC EIGENMODE SOLUTION FOR THE SELF-FILTERING UNSTABLE RESONATOR SO APPLIED OPTICS LA English DT Article ID OPTICAL-RESONATOR; PROLATE FUNCTIONS; MODE ANALYSIS; APERTURE; CONFIGURATION; CAVITY AB An analytic solution for the bare cavity eigenmodes of a nonsymmetric self-filtering unstable resonator is obtained by a modal expansion in prolate functions, which is a complete and orthogonal set of eigenmodes for a symmetric confocal stable resonator. An accurate representation within the aperture is shown to require only three terms. An efficient use of Gaussian quadrature for the various calculations is described. RP LATHAM, WP (reprint author), USAF,PHILIPS LAB,KIRTLAND AFB,NM 87117, USA. NR 28 TC 1 Z9 1 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 APR 20 PY 1992 VL 31 IS 12 BP 1948 EP 1959 PG 12 WC Optics SC Optics GA HP607 UT WOS:A1992HP60700012 PM 20720843 ER PT J AU BAKSI, AK HSU, V MCWILLIAMS, MO FARRAR, E AF BAKSI, AK HSU, V MCWILLIAMS, MO FARRAR, E TI AR-40/AR-39 DATING OF THE BRUNHES-MATUYAMA GEOMAGNETIC-FIELD REVERSAL SO SCIENCE LA English DT Article ID POLARITY TIME-SCALE; NORTHWEST; BP AB Magnetostratigraphic studies are widely used in conjunction with the geomagnetic polarity time scale (GPTS) to date events in the range 0 to 5 million years ago. A critical tie point on the GPTS is the potassium-argon age of the most recent (Brunhes-Matuyama) geomagnetic field reversal. Astronomical values for the forcing frequencies observed in the oxygen isotope record in Ocean Drilling Project site 677 suggest that the age of this last reversal is 780 ka (thousand years ago), whereas the potassium-argon-based estimate is 730 ka. Results from Ar-40/Ar-39 incremental heating studies on a series of lavas from Maui that straddle the Brunhes-Matuyama reversal give an age of 783 +/- 11 ka, in agreement with the astronomically derived value. The astronomically based technique appears to be a viable tool for dating young sedimentary sequences. C1 USAF,CTR TECH APPLICAT,PATRICK AFB,FL 32925. STANFORD UNIV,DEPT GEOPHYS,STANFORD,CA 94305. QUEENS UNIV,DEPT GEOL SCI,KINGSTON K7L 3N6,ONTARIO,CANADA. RP BAKSI, AK (reprint author), LOUISIANA STATE UNIV,DEPT GEOL & GEOPHYS,BATON ROUGE,LA 70803, USA. RI McWilliams, Michael/A-9548-2011 OI McWilliams, Michael/0000-0002-4107-7069 NR 24 TC 149 Z9 157 U1 0 U2 2 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 SN 0036-8075 J9 SCIENCE JI Science PD APR 17 PY 1992 VL 256 IS 5055 BP 356 EP 357 DI 10.1126/science.256.5055.356 PG 2 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA HP032 UT WOS:A1992HP03200029 PM 17743111 ER PT J AU RUBEY, WA TISSANDIER, MD STRIEBICH, RC TIREY, DA ANDERSON, SD AF RUBEY, WA TISSANDIER, MD STRIEBICH, RC TIREY, DA ANDERSON, SD TI IN-LINE GAS-CHROMATOGRAPHIC MEASUREMENT OF TRACE OXYGEN AND OTHER DISSOLVED-GASES IN FLOWING HIGH-PRESSURE THERMALLY STRESSED JET FUEL SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV DAYTON,RES INST,ENVIRONM SCI GRP,DAYTON,OH 45469. USAF,WRIGHT AERONAUT LABS,WRIGHT PATTERSON AFB,OH 45433. 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 5 PY 1992 VL 203 BP 8 EP PETR PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA HK162 UT WOS:A1992HK16201954 ER PT J AU JONES, EG BALSTER, WJ ANDERSON, SD AF JONES, EG BALSTER, WJ ANDERSON, SD TI FORMATION OF INSOLUBLES IN JET FUELS - EFFECTS OF OXYGEN SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SYST RES LABS INC,DAYTON,OH 45440. USAF,WRIGHT AERONAUT LABS,AERO PROP & POWER DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 2 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 5 PY 1992 VL 203 BP 11 EP PETR PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA HK162 UT WOS:A1992HK16201957 ER PT J AU HENEGHAN, SP HARRISON, WE AF HENEGHAN, SP HARRISON, WE TI ANTIOXIDANTS IN JET FUELS - A NEW LOOK SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV DAYTON,DAYTON,OH 45469. USAF,WRIGHT AERONAUT LABS,POSF,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 5 PY 1992 VL 203 BP 13 EP PETR PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA HK162 UT WOS:A1992HK16201959 ER PT J AU COOLIDGE, MB STEWART, JJP AF COOLIDGE, MB STEWART, JJP TI GEOMETRY OPTIMIZATION VIA A COMBINED ABINITIO SEMIEMPIRICAL TECHNIQUE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USAF ACAD,FRANK J SEILER RES LAB,COLORADO SPRINGS,CO 80840. STEWART COMPUTAT CHEM,COLORADO SPRINGS,CO 80921. 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 5 PY 1992 VL 203 BP 16 EP COMP PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA HK161 UT WOS:A1992HK16101901 ER PT J AU COOPER, KL ARNOLD, FE AF COOPER, KL ARNOLD, FE TI SYNTHESIS AND CHARACTERIZATION OF POLY(ARYLENE ETHER KETONE)-POLY(BENZOTHIAZOLE) SEGMENTED AND TRI-BLOCK POLYMERS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SYSTRAN CORP,DAYTON,OH 45432. 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 APR 5 PY 1992 VL 203 BP 17 EP POLY PN 3 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA HK163 UT WOS:A1992HK16300017 ER PT J AU COOPERL, TM NATARAJAN, LV STRASSER, R PACHTER, R CRANE, RL AF COOPERL, TM NATARAJAN, LV STRASSER, R PACHTER, R CRANE, RL TI A POLYPEPTIDE NONLINEAR OPTICAL MATERIAL - POLY(DOCOSYL-4-(4-HYDROXYSTYRL) PYRIDINIUM BROMIDE L-GLUTAMATE) SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SCI APPLICAT INT CORP,DAYTON,OH 45431. WRIGHT LAB,MCPJ,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 5 PY 1992 VL 203 BP 23 EP POLY PN 3 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA HK163 UT WOS:A1992HK16300023 ER PT J AU TAN, LS REINHARDT, BA SOLOSKI, EJ SIMKO, SR DILLARD, AG AF TAN, LS REINHARDT, BA SOLOSKI, EJ SIMKO, SR DILLARD, AG TI SYNTHESIS AND CHARACTERIZATION OF POLY(ALKYLENE BENZOBISTHIAZOLES) SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 WRIGHT LAB,MLBP,POLYMER BRANCH,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 5 PY 1992 VL 203 BP 45 EP POLY PN 3 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA HK163 UT WOS:A1992HK16300045 ER PT J AU EDWARDS, T ANDERSON, SD AF EDWARDS, T ANDERSON, SD TI PRELIMINARY-RESULTS OF HIGH-TEMPERATURE JP-7 CRACKING ASSESSMENT SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USAF,WRIGHT AERONAUT LABS,POSF,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 1 U2 3 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 5 PY 1992 VL 203 BP 72 EP PETR PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA HK162 UT WOS:A1992HK16202018 ER PT J AU MENSTER, MK BOMBICK, DD FLORA, DB BUNNING, TJ KLEI, HE CRANE, RL AF MENSTER, MK BOMBICK, DD FLORA, DB BUNNING, TJ KLEI, HE CRANE, RL TI LIQUID-CRYSTALLINE COPOLYMERS IN CAPILLARY GAS-CHROMATOGRAPHY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 WRIGHT STATE UNIV,DEPT CHEM,DAYTON,OH 45435. WRIGHT STATE UNIV,DEPT BIOCHEM,DAYTON,OH 45435. UNIV CONNECTICUT,DEPT CHEM ENGN,STORRS,CT 06269. WRIGHT LAB,MLPJ,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 5 PY 1992 VL 203 BP 89 EP POLY PN 3 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA HK163 UT WOS:A1992HK16300089 ER PT J AU SHACKELFORD, SA GOLDMAN, JF AF SHACKELFORD, SA GOLDMAN, JF TI INTRAMOLECULAR MECHANISTIC THERMOCHEMICAL DECOMPOSITION STUDIES OF 1,3,5,5-TETRA-NITROHEXAHYDROPYRIMIDINE AND ITS DEUTERIUM LABELED ANALOGS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USAF ACAD,FJ SEILER RES LAB,COLORADO SPRINGS,CO 80840. 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 5 PY 1992 VL 203 BP 113 EP ORGN PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA HK162 UT WOS:A1992HK16201497 ER PT J AU YOUNG, RK UTERMOEHLEN, CM AF YOUNG, RK UTERMOEHLEN, CM TI INVESTIGATION OF THE WITTIG REACTION WITH BETA-KETOESTERS 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 5 PY 1992 VL 203 BP 130 EP CHED PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA HK161 UT WOS:A1992HK16101133 ER PT J AU WANG, CS LEE, CYC ARNOLD, FE AF WANG, CS LEE, CYC ARNOLD, FE TI ION-IMPLANTATION OF RIGID-ROD AND LADDER POLYMERS FOR IMPROVED ELECTRICAL-CONDUCTIVITY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV DAYTON,RES INST,DAYTON,OH 45469. USAF,WRIGHT LAB,MAT DIRECTORATE,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 5 PY 1992 VL 203 BP 145 EP PMSE PN 3 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA HK163 UT WOS:A1992HK16300767 ER PT J AU EMERSON, K AMEND, JR RADKE, JB AF EMERSON, K AMEND, JR RADKE, JB TI USING COMPUTERS TO INVOLVE STUDENTS IN EXPERIMENT DESIGN SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 MONTANA STATE UNIV,DEPT CHEM,BOZEMAN,MT 59717. 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 5 PY 1992 VL 203 BP 164 EP CHED PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA HK161 UT WOS:A1992HK16101167 ER PT J AU WRIGHT, JR AF WRIGHT, JR TI THE UNITED-STATES-NATIONAL-CHEMISTRY-OLYMPIAD (USNCO) PROGRAM AND INTERNATIONAL CHEMISTRY OLYMPIAD (ICHO) SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USAF ACAD,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 5 PY 1992 VL 203 BP 193 EP CHED PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA HK161 UT WOS:A1992HK16101195 ER PT J AU ZAWOROTKO, MJ WILKES, JS AF ZAWOROTKO, MJ WILKES, JS TI INFLUENCE OF HYDROGEN-BONDING AND AROMATIC STACKING UPON THE PHYSICAL-PROPERTIES OF ALKYL IMIDAZOLIUM AND PYRIDINIUM SALTS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USAF ACAD,FRANK J SEILER RES LAB,COLORADO SPRINGS,CO 80840. NR 0 TC 0 Z9 0 U1 1 U2 3 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 5 PY 1992 VL 203 BP 201 EP INOR PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA HK162 UT WOS:A1992HK16200611 ER PT J AU BUNNING, TJ MCNAMEE, SG KLEI, HE SAMULSKI, ET OBER, CK ADAMS, WW AF BUNNING, TJ MCNAMEE, SG KLEI, HE SAMULSKI, ET OBER, CK ADAMS, WW TI SYNCHROTRON X-RAY STUDIES OF ELECTRIC-FIELD ALIGNMENT OF LIQUID-CRYSTALLINE SILOXANES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 WRIGHT LAB,MLPJ,WRIGHT PATTERSON AFB,DAYTON,OH 45433. CORNELL UNIV,DEPT MAT SCI & ENGN,ITHACA,NY 14853. UNIV CONNECTICUT,DEPT CHEM ENGN,STORRS,CT 06269. UNIV N CAROLINA,DEPT CHEM,CHAPEL HILL,NC 27515. 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 5 PY 1992 VL 203 BP 250 EP POLY PN 3 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA HK163 UT WOS:A1992HK16300246 ER PT J AU SLUTSKER, L ADAMS, WW ROLAND, CM AF SLUTSKER, L ADAMS, WW ROLAND, CM TI MORPHOLOGICAL HETEROGENEITY ALONG AND ACROSS THE FIBER AXIS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USN,RES LAB,DIV CHEM,WASHINGTON,DC 20375. AMOCO FABR & FIBERS CO,CTR RES & DEV,ATLANTA,GA 30336. USAF,WRIGHT LAB,MAT DIRECTORATE,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 5 PY 1992 VL 203 BP 251 EP POLY PN 3 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA HK163 UT WOS:A1992HK16300247 ER PT J AU VEZIE, DL THOMAS, EL HUDSON, SD ADAMS, WW AF VEZIE, DL THOMAS, EL HUDSON, SD ADAMS, WW TI APPLICATION OF LOW-VOLTAGE, HIGH-RESOLUTION SCANNING ELECTRON-MICROSCOPY TO THE STUDY OF HIGH-PERFORMANCE POLYMERS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 MIT,DEPT MAT SCI & ENGN,CAMBRIDGE,MA 02139. AT&T BELL LABS,MURRAY HILL,NJ 07974. WRIGHT LAB,MAT DIRECTORATE,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 5 PY 1992 VL 203 BP 268 EP POLY PN 3 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA HK163 UT WOS:A1992HK16300264 ER PT J AU HORN, TR SHOEMAKER, JR HAALAND, PD WIERSCHKE, SG AF HORN, TR SHOEMAKER, JR HAALAND, PD WIERSCHKE, SG TI POLYMER SIMULATION - PREDICTION OF STRAIN-DEPENDENT PROPERTIES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 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. 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 5 PY 1992 VL 203 BP 297 EP POLY PN 3 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA HK163 UT WOS:A1992HK16300293 ER PT J AU PACHTER, R CRANE, RL ADAMS, WW BUNNING, TJ SOCCI, EP FARMER, BL AF PACHTER, R CRANE, RL ADAMS, WW BUNNING, TJ SOCCI, EP FARMER, BL TI MACROMOLECULAR SIMULATION - SILOXANE-BASED LIQUID-CRYSTALS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 WRIGHT LAB,MLPJ,MAT LAB,WRIGHT PATTERSON AFB,OH 45433. UNIV VIRGINIA,DEPT MAT SCI,CHARLOTTESVILLE,VA 22901. UNIV CONNECTICUT,DEPT CHEM ENGN,STORRS,CT 06268. 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 5 PY 1992 VL 203 BP 298 EP POLY PN 3 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA HK163 UT WOS:A1992HK16300294 ER PT J AU BROWN, MJ BURRIS, DR CHERRY, JA AF BROWN, MJ BURRIS, DR CHERRY, JA TI USE OF CATIONIC SURFACTANTS TO ENHANCE CONTAMINANT RETARDATION AT CFB BORDEN ONTARIO - LABORATORY AND PRELIMINARY FIELD RESULTS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 AFCESA,RAVC,TYNDALL AFB,FL 32403. UNIV WATERLOO,WCGR,WATERLOO N2L 3G1,ONTARIO,CANADA. 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 5 PY 1992 VL 203 BP 321 EP ENVR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA HK161 UT WOS:A1992HK16102254 ER PT J AU DOTRONG, M DOTRONG, MH EVERS, RC AF DOTRONG, M DOTRONG, MH EVERS, RC TI GRAFT-COPOLYMERS OF RIGID-ROD POLYMERS AS SINGLE-COMPONENT MOLECULAR COMPOSITES 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 APR 5 PY 1992 VL 203 BP 374 EP POLY PN 3 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA HK163 UT WOS:A1992HK16300366 ER PT J AU VAKIJ, UM WANG, CS LEE, CYC DOTRONG, M EVERS, RC AF VAKIJ, UM WANG, CS LEE, CYC DOTRONG, M EVERS, RC TI INFLUENCE OF MOLECULAR-STRUCTURE ON PROCESSING CONDITIONS OF SINGLE-COMPONENT MOLECULAR COMPOSITES - GRAFT-COPOLYMERS OF RIGID-ROD POLYMERS 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 APR 5 PY 1992 VL 203 BP 375 EP POLY PN 3 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA HK163 UT WOS:A1992HK16300367 ER PT J AU DANG, TD ARNOLD, FE AF DANG, TD ARNOLD, FE TI WATER-SOLUBLE RIGID-ROD POLYMERS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV DAYTON,RES INST,DAYTON,OH 45469. WRIGHT LAB,MAT DIRESTORATE,POLYMER BRANCH,WRIGHT PATTERSON AFB,OH 45433. 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 5 PY 1992 VL 203 BP 483 EP POLY PN 3 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA HK163 UT WOS:A1992HK16300474 ER PT J AU YECHOUT, TR AF YECHOUT, TR TI DEGREES OF EXPERTISE - A SURVEY OF AEROSPACE ENGINEERING PROGRAMS SO AEROSPACE AMERICA LA English DT Article RP YECHOUT, TR (reprint author), USAF ACAD,COLORADO SPRINGS,CO 80840, USA. NR 0 TC 0 Z9 0 U1 0 U2 1 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 APR PY 1992 VL 30 IS 4 BP 34 EP & PG 0 WC Engineering, Aerospace SC Engineering GA HN003 UT WOS:A1992HN00300008 ER PT J AU SIMPSON, LB WHITFIELD, DL AF SIMPSON, LB WHITFIELD, DL TI FLUX-DIFFERENCE SPLIT ALGORITHM FOR UNSTEADY THIN-LAYER NAVIER-STOKES SOLUTIONS SO AIAA JOURNAL LA English DT Article ID EQUATIONS; FORM AB An efficient flux-difference split scheme for calculating steady and unsteady thin-layer Navier-Stokes solutions for airfoils and wings is presented. Steady solutions for a flat plate laminar boundary-layer profile are correctly modeled with only three grid cells internal to the boundary layer. The flux-difference split algorithm was used to evaluate the scheme for unsteady viscous calculations. The diffusive terms are time lagged in the solution process. The scheme is second-order accurate in space and first-order accurate in time due to the explicit treatment of the diffusive terms. A Newton subiteration technique was implemented to allow for larger time step sizes and second-order temporal accuracy. The subiterations are more efficient than a normal time step iteration since the flux Jacobians need not be updated for the subiterations. The result is a more efficient and robust unsteady thin-layer Navier-Stokes algorithm that shows extremely good comparison with unsteady experimental data for oscillating airfoils and wings, even for calculations using large Courant numbers (up to 45,000) on extremely fine viscous grids. Engineering solutions for oscillating airfoils and wings can be obtained using the algorithm presented. Accurate viscous results can be obtained at a cost near that of inviscid results (on the same grid), yet with the inclusion of the time-lagged viscous terms, the results are superior to those obtained using inviscid schemes. C1 MISSISSIPPI STATE UNIV,AEROSP ENGN,MISSISSIPPI STATE,MS 39762. RP SIMPSON, LB (reprint author), USAF,AERODYNAM BRANCH,ARMAMENT DIRECTORATE,WRIGHT LAB,EGLIN AFB,FL 32542, USA. NR 24 TC 13 Z9 13 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 1992 VL 30 IS 4 BP 914 EP 922 DI 10.2514/3.11009 PG 9 WC Engineering, Aerospace SC Engineering GA HM681 UT WOS:A1992HM68100008 ER PT J AU WEINBACH, JR SMITH, RJ AF WEINBACH, JR SMITH, RJ TI CEPHALOMETRIC CHANGES DURING TREATMENT WITH THE OPEN BITE BIONATOR SO AMERICAN JOURNAL OF ORTHODONTICS AND DENTOFACIAL ORTHOPEDICS LA English DT Article AB Lateral cephalometric radiographs of 39 patients who were treated with an open bite bionator, also known as a "bionator to close the bite," were obtained from six private orthodontic practices. Comparisons of pretreatment cephalometric values with published standards indicate that clinicians do not generally use this appliance for patients who have marked excessive anterior vertical dimension. Rather, the cases appear to be Class II with mild anterior open bites or with some indication of open bite tendency, such as a steep mandibular plane angle. Changes in cephalometric values during treatment with the appliance were compared with normal growth standards. Patients exhibited a reduction in facial convexity and overjet, reduced eruption of maxillary molars, and less of an increase in facial height than expected. The appliance appears to be effective for Class II correction in patients who require control or improvement of moderately excessive vertical dimension. C1 WASHINGTON UNIV,DEPT ANTHROPOL,1 BROOKINGS DR,ST LOUIS,MO 63130. WASHINGTON UNIV,SCH DENT MED,DEPT ORTHODONT,ST LOUIS,MO 63130. USAF,WASHINGTON,DC 20330. NR 21 TC 19 Z9 21 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 APR PY 1992 VL 101 IS 4 BP 367 EP 374 DI 10.1016/S0889-5406(05)80330-0 PG 8 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA HN846 UT WOS:A1992HN84600012 PM 1558066 ER PT J AU MAIR, EA PARSONS, DS AF MAIR, EA PARSONS, DS TI PEDIATRIC TRACHEOBRONCHOMALACIA AND MAJOR AIRWAY COLLAPSE SO ANNALS OF OTOLOGY RHINOLOGY AND LARYNGOLOGY LA English DT Article; Proceedings Paper CT MEETING OF THE AMERICAN BRONCHO-ESOPHAGOLOGICAL ASSOC CY MAY 05-06, 1991 CL WAIKOLOA, HI SP AMER BRONCHO ESOPHAGOL ASSOC DE BRONCHOSCOPY; ENDOSCOPY; MAJOR AIRWAY COLLAPSE; TRACHEOBRONCHOMALACIA ID TRACHEOESOPHAGEAL FISTULA; TRACHEOMALACIA; BRONCHOMALACIA; COMPRESSION; CHILDREN; PRESSURE; REPAIR; APNEA AB Based on histopathologic, endoscopic, and clinical findings of the flaccid airway, new descriptive terms - major airway collapse types 1 through 3 - are proposed to better define tracheobronchomalacia. A typing and grading system is offered to objectively analyze and compare clinical cases. Endoscopic and anesthetic techniques are presented for use in children with respiratory distress suggestive of tracheobronchomalacia. Spontaneous ventilation with laryngoscopic insufflation of anesthetic gases and the use of small-diameter telescopes without bronchoscopes are key elements for the examination of the dynamic pediatric airway. Pitfalls of classic bronchoscopy techniques are described that can lead to a missed diagnosis. Between 1987 and 1990, over 200 telescopic bronchoscopies were performed at Wilford Hall US Air Force Medical Center on 129 children 3 years old and younger with respiratory distress. By means of the described techniques, 38 children (30%) with major airway collapse were identified. Major airway collapse was associated with a variety of endoscopic and cardiac abnormalities. With the emergence of sophisticated neonatal pediatric respiratory care, a growing number of premature infants with major airway collapse are surviving. Early, precise endoscopic diagnosis allows optimal management. RP MAIR, EA (reprint author), WILFORD HALL USAF MED CTR,DEPT OTOLARYNGOL HEAD & NECK SURG,LACKLAND AFB,TX 78236, USA. NR 43 TC 64 Z9 66 U1 0 U2 1 PU ANNALS PUBL CO PI ST LOUIS PA 4507 LACLEDE AVE, ST LOUIS, MO 63108 SN 0003-4894 J9 ANN OTO RHINOL LARYN JI Ann. Otol. Rhinol. Laryngol. PD APR PY 1992 VL 101 IS 4 BP 300 EP 309 PG 10 WC Otorhinolaryngology SC Otorhinolaryngology GA HM679 UT WOS:A1992HM67900003 PM 1562133 ER PT J AU THURMAN, RT ROETTGER, R AF THURMAN, RT ROETTGER, R TI INTRAPLEURAL RUPTURE OF THE AZYGOS VEIN SO ANNALS OF THORACIC SURGERY LA English DT Article ID BLUNT CHEST TRAUMA AB Intrapleural rupture of the azygos vein associated with hypovolemic shock resulting from blunt chest trauma is reported. Management demanded an emergency department right thoracotomy with venous ligation. Aortography to rule out associated arterial injury was performed. The previously published 7 cases of azygos vein rupture are reviewed as are possible etiologic mechanisms responsible for this rare injury. The history and clinical signs compatible with this injury are emphasized. C1 WILFORD HALL USAF MED CTR,SGHSG,DEPT GEN SURG,LACKLAND AFB,TX 78236. NR 7 TC 11 Z9 12 U1 0 U2 0 PU ELSEVIER SCIENCE INC PI NEW YORK PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 SN 0003-4975 J9 ANN THORAC SURG JI Ann. Thorac. Surg. PD APR PY 1992 VL 53 IS 4 BP 697 EP 699 PG 3 WC Cardiac & Cardiovascular Systems; Respiratory System; Surgery SC Cardiovascular System & Cardiology; Respiratory System; Surgery GA HL854 UT WOS:A1992HL85400030 PM 1554286 ER PT J AU MOORMAN, DL GREEN, RP AF MOORMAN, DL GREEN, RP TI CATARACT-SURGERY AND INTRAOCULAR LENSES IN MILITARY AVIATORS SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article ID IMPLANTATION; COMPLICATIONS; EXTRACTION AB We reviewed the medical records of 23 military aviators who were evaluated by the United States Air Force School of Aerospace Medicine (USAFSAM) after cataract extraction with intraocular lens implantation between 1979 and 1990. The 23 subjects were male Caucasians, with a mean age of 43 years. Of the subjects, 21 were pilots, and, of these, 8 were qualified in high-performance aircraft. There were a total of 28 operated eyes, 24 of which had received extracapsular cataract extractions (ECCE) with posterior chamber lenses. The best-corrected, postoperative vision was 20/20 or better in all eyes. Posterior capsule opacification occurred in 14 (60%) of the ECCE eyes, with five requiring Nd:YAG (Yttrium-Aluminum-Garnet) laser capsulotomies. One aviator was disqualified from flying duties because of ocular deficiencies, for a visually-qualified-to-fly rate of 96%. Eight aviators have actually flown since surgery. Although follow-up was short, the initial results are encouraging. C1 USAF,MC,FS,ARMSTRONG LAB,AOCO,BROOKS AFB,TX 78235. NR 18 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 1992 VL 63 IS 4 BP 302 EP 307 PG 6 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA HL735 UT WOS:A1992HL73500011 PM 1610342 ER PT J AU LIRON, Z MATTIE, DR MCDOUGAL, JN AF LIRON, Z MATTIE, DR MCDOUGAL, JN TI DIFFUSION OF WATER IN PORCINE STRATUM-CORNEUM MEASURED BY A THERMAL GRAVIMETRIC ANALYSIS (TGA) TECHNIQUE SO CLINICAL RESEARCH LA English DT Meeting Abstract C1 ISRAEL INST BIOL RES,IL-70450 NESS ZIONA,ISRAEL. USAF,ARMSTRONG LAB,DIV TOXICOL,WRIGHT PATTERSON AFB,OH 45433. 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 1992 VL 40 IS 2 BP A535 EP A535 PG 1 WC Medicine, Research & Experimental SC Research & Experimental Medicine GA HN741 UT WOS:A1992HN74102297 ER PT J AU LUCEY, CR BLATT, SP BUTZIN, C HENDRIX, CW LUCEY, DR AF LUCEY, CR BLATT, SP BUTZIN, C HENDRIX, CW LUCEY, DR TI TOTAL LYMPHOCYTE COUNT AS A PREDICTOR OF CD4+ T-CELL COUNT IN HIV-INFECTED PERSONS SO CLINICAL RESEARCH LA English DT Meeting Abstract C1 WALTER REED ARMY MED CTR,WASHINGTON,DC 20307. WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. 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 1992 VL 40 IS 2 BP A560 EP A560 PG 1 WC Medicine, Research & Experimental SC Research & Experimental Medicine GA HN741 UT WOS:A1992HN74102440 ER PT J AU PATTERSON, WR CISSIK, JH AF PATTERSON, WR CISSIK, JH TI A COMPARISON OF HUMAN AND PORCINE PLATELET FATTY-ACID COMPOSITION SO COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY B-BIOCHEMISTRY & MOLECULAR BIOLOGY LA English DT Article ID ARACHIDONIC-ACID; AGGREGATION; METABOLISM; MEMBRANE; LIPIDS; POLYPHOSPHOINOSITIDES; ACTIVATION AB 1. Human and pig platelets were analyzed for lipid composition by gas chromatography. 2. In comparing the two species' platelets, we noted significant differences in several lipid concentrations, some of which involved major lipid constituents. 3. The lipids for which there are significant differences in composition may contribute to those variations in platelet responses to stimulation demonstrated to exist between species. RP PATTERSON, WR (reprint author), WILFORD HALL USAF MED CTR,CLIN INVEST DIRECTORATE,LACKLAND AFB,TX 78236, USA. NR 27 TC 6 Z9 6 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0305-0491 J9 COMP BIOCHEM PHYS B JI Comp. Biochem. Physiol. B-Biochem. Mol. Biol. PD APR PY 1992 VL 101 IS 4 BP 645 EP 649 DI 10.1016/0305-0491(92)90353-S PG 5 WC Biochemistry & Molecular Biology; Zoology SC Biochemistry & Molecular Biology; Zoology GA HN375 UT WOS:A1992HN37500027 PM 1611882 ER PT J AU DAVIS, NJ CARPENTER, BA GLOVER, CW CULIOLI, JC AF DAVIS, NJ CARPENTER, BA GLOVER, CW CULIOLI, JC TI PARALLEL APPROACHES TO THE SOLUTION OF THE ASSIGNMENT PROBLEM SO CONCURRENCY-PRACTICE AND EXPERIENCE LA English DT Article ID PROCESSOR; SYSTEMS AB This paper discusses efforts to develop parallel algorithms that can be used to solve large-scale assignment problems typical of military battle management systems. Attempts to parallelize the classical Hungarian method are explored. Drawing on experimental data, a regression model is derived that relates the Hungarian method's run time to a cubic function of the number of parallel processors used in the solution. Four parallel heuristics for solving the assignment problem are developed and analysed. Two of them perform well in a parallel environment. The first, based on Vogel's approximation, can be used to identify a feasible, near-optimal assignment. The second algorithm partitions the assignment problem into independent subproblems across the parallel array. The resulting solution, although infeasible in the strict definition of the assignment problem, is seen to be reasonably good and can be obtained very rapidly. Either of these two heuristics are of potential use in the stringent computing environment of a real-time resource management system. C1 VIRGINIA POLYTECH INST & STATE UNIV,BRADLEY DEPT ELECT ENGN,BLACKSBURG,VA 24061. USAF,COMMUN COMMAND,CTR STAND SYST,GUNTER AFB,AL 36114. OAK RIDGE NATL LAB,DIV ENGN PHYS & MATH,OAK RIDGE,TN 37831. ECOLE MINES PARIS,PARIS,FRANCE. NR 20 TC 0 Z9 0 U1 0 U2 1 PU JOHN WILEY & SONS LTD PI W SUSSEX PA BAFFINS LANE CHICHESTER, W SUSSEX, ENGLAND PO19 1UD SN 1040-3108 J9 CONCURRENCY-PRACT EX JI Concurrency-Pract. Exp. PD APR PY 1992 VL 4 IS 2 BP 163 EP 184 DI 10.1002/cpe.4330040205 PG 22 WC Computer Science, Software Engineering; Computer Science, Theory & Methods SC Computer Science GA HM888 UT WOS:A1992HM88800004 ER PT J AU COTE, MG AF COTE, MG TI AUTOMATED SWEPT-ANGLE BISTATIC SCATTERING MEASUREMENTS USING CONTINUOUS WAVE RADAR SO IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT LA English DT Article ID PERFECTLY CONDUCTING CUBE AB The establishment of the IEEE Electromagnetic Modeling Software Committee [12] and the Department of Defense sponsored Electromagnetic Code Consortium [13] indicates the electromagnetics community is interested in validating general electromagnetic modeling software. An important part of this validation is obtaining reliable bistatic scattering measurements on canonical scatterers. This paper describes a simple system well suited for such measurements. The system is capable of measuring bistatic scattering from near backscatter through forward scatter. At X-band frequencies, scattering levels of -50 dBsm in the backscattering region and -20 dBsm near forward scatter can be measured to an accuracy of +/- 1 dB. This fully automated indoor system fixes the target and direction of illumination and sweeps the receive antenna to collect data as a direct function of bistatic angle. A broad band, coherent, continuous wave radar is used to obtain both amplitude and phase of the component of the total field aligned with the receive antenna polarization. Target scattered fields are derived from the phasor subtraction of target and background measurement runs. We consider the system design, calibration procedures, and measurement accuracy. Example measurements on metal cubes and spheres are presented to demonstrate the system performance [6], [9]. RP COTE, MG (reprint author), USAF,ROME LAB,ERCT,BEDFORD,MA 01731, USA. NR 14 TC 21 Z9 21 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 0018-9456 J9 IEEE T INSTRUM MEAS JI IEEE Trans. Instrum. Meas. PD APR PY 1992 VL 41 IS 2 BP 185 EP 192 DI 10.1109/19.137345 PG 8 WC Engineering, Electrical & Electronic; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA HV419 UT WOS:A1992HV41900003 ER PT J AU LUCEY, DR HENDRIX, CW ANDRZEJEWSKI, C MELCHER, GP BUTZIN, CA HENRY, R WIANS, FH BOSWELL, RN AF LUCEY, DR HENDRIX, CW ANDRZEJEWSKI, C MELCHER, GP BUTZIN, CA HENRY, R WIANS, FH BOSWELL, RN TI COMPARISON BY RACE OF TOTAL SERUM IGG, IGA, AND IGM WITH CD4+ T-CELL COUNTS IN NORTH-AMERICAN PERSONS INFECTED WITH THE HUMAN-IMMUNODEFICIENCY-VIRUS TYPE-1 SO JOURNAL OF ACQUIRED IMMUNE DEFICIENCY SYNDROMES AND HUMAN RETROVIROLOGY LA English DT Article DE RACE; IMMUNOGLOBULINS; HIV-1 ID HIV-1 INFECTION; NEUTRALIZING DETERMINANT; ANTI-P24 ANTIBODY; AIDS; INDIVIDUALS; ANTIGENEMIA; CORE; INTERLEUKIN-6; PREDICTORS; INDUCTION AB European patients with human immunodeficiency virus type 1 (HIV-1) infection have been reported to have lower titers of anti-p24 antibody than Central African HIV seropositive patients. Recently, black HIV positive patients in the United States were reported to be more likely to have detectable anti-p24 antibodies, less p24 antigenemia, and higher combined serum immunoglobulins than white HIV positive patients. We measured individual total serum immunoglobulins in 853 HIV positive patients (94% male; 58% white and 42% black) on their initial medical evaluation and compared them with CD4+ T-cell counts. Blacks had notably higher IgG levels (p = 0.001) across the entire spectrum of CD4+ T-cell counts. Serum IgM levels were slightly higher in blacks. IgA levels were not significantly different between the races, although the trend (p = 0.006) was toward higher levels in whites. We also measured these three serum immunoglobulins in 60 HIV seronegative, healthy blood donors (30 black and 30 white). In this control group, blacks had statistically higher IgG and IgA levels than whites. A review of the literature prior to the HIV/aquired immune deficiency syndrome epidemic also supports the view that racial differences in IgG levels are not specific for HIV infection. We speculate that racial differences in humoral immunity, independent of geography or strain of HIV, may account for differences in anti-HIV antibody levels and HIV antigenemia. C1 WILFORD HALL USAF MED CTR,DEPT MED,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. RI Hendrix, Craig/G-4182-2014 OI Hendrix, Craig/0000-0002-5696-8665 NR 50 TC 19 Z9 19 U1 0 U2 2 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 1077-9450 J9 J ACQ IMMUN DEF SYND JI J. Acquir. Immune Defic. Syndr. Hum. Retrovirol. PD APR PY 1992 VL 5 IS 4 BP 325 EP 332 PG 8 WC Immunology; Infectious Diseases SC Immunology; Infectious Diseases GA HK430 UT WOS:A1992HK43000001 PM 1347787 ER PT J AU WAYMAN, BE MURATA, SM ALMEIDA, RJ FOWLER, CB AF WAYMAN, BE MURATA, SM ALMEIDA, RJ FOWLER, CB TI A BACTERIOLOGICAL AND HISTOLOGICAL-EVALUATION OF 58 PERIAPICAL LESIONS SO JOURNAL OF ENDODONTICS LA English DT Article ID INFECTIONS AB Periapical tissue from 58 cases requiring periapical surgery was examined histologically and cultured for the presence of microbes. Twenty-nine had a possible oral cavity communication and 29 did not. Approximately one-half of each biopsy was submitted for culture while the other portion was examined histologically. Cultures were positive for the presence of bacteria in 51 of 58 cases while bacteria were seen histologically in only 8 of 58 cases. A total of 50 different species of bacteria were isolated from the 58 cultures of periapical tissue. Of 133 isolates, 87 were strict anaerobes, 37 were facultative anaerobes, and 9 were aerobes. Bacteroides species were found in 17 cultures, always with additional bacteria. Seventeen of 58 biopsies contained foreign particulate matter thought to be root canal sealer. Bacteria were found in periapical granulomas, radicular cysts, and a periapical abscess. According to our data, bacteria, foreign material, missed canals, vertical root fractures, and periodontal disease may all contribute to the chronic, non-healing periradicular lesion. C1 WILFORD HALL USAF MED CTR,MICROBIOL BRANCH,LACKLAND AFB,TX 78236. WILFORD HALL USAF MED CTR,DEPT ORAL PATHOL,LACKLAND AFB,TX 78236. RP WAYMAN, BE (reprint author), WILFORD HALL USAF MED CTR,DEPT GEN DENT,ENDODONT SECT,LACKLAND AFB,TX 78236, USA. NR 20 TC 61 Z9 63 U1 0 U2 6 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 1992 VL 18 IS 4 BP 152 EP 155 DI 10.1016/S0099-2399(06)81409-3 PG 4 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA HL886 UT WOS:A1992HL88600003 PM 1402568 ER PT J AU TIRRE, WC AF TIRRE, WC TI CAN READING-ABILITY BE MEASURED WITH TESTS OF MEMORY AND PROCESSING SPEED SO JOURNAL OF GENERAL PSYCHOLOGY LA English DT Article ID INDIVIDUAL-DIFFERENCES; WORKING MEMORY; COMPREHENSION; CONSTRUCTION; SKILL AB The author investigated the possibility of estimating reading ability using tests of memory and processing speed that have significantly reduced reading requirements. Four hundred three air force trainees were given tests of their working memory and long-term memory processes, as well as a standardized reading test. A multiple correlation of .79 indicated that global reading ability is substantially correlated with memory processes. Additional analyses indicated that word knowledge and comprehension, the two major components of reading ability, were both explained by the same set of memory process factors, namely, long-term memory processes, semantic memory retrieval speed, and working memory capacity. These results, which are consistent with the view that memory ability underlies reading ability, support the endeavor of measuring reading ability with memory and processing speed tasks. RP TIRRE, WC (reprint author), ARMSTRONG LAB,HUMAN RESOURCES DIRECTORATE,BROOKS AFB,TX, USA. NR 45 TC 1 Z9 1 U1 1 U2 1 PU HELDREF PUBLICATIONS PI WASHINGTON PA 1319 EIGHTEENTH ST NW, WASHINGTON, DC 20036-1802 SN 0022-1309 J9 J GEN PSYCHOL JI J. Gen. Psychol. PD APR PY 1992 VL 119 IS 2 BP 141 EP 160 PG 20 WC Psychology, Multidisciplinary SC Psychology GA JJ329 UT WOS:A1992JJ32900005 PM 1506845 ER PT J AU TILFORD, EH AF TILFORD, EH TI RED-PHOENIX, THE RISE OF SOVIET AIR POWER, 1941-1945 - HARDESTY,V SO JOURNAL OF MILITARY HISTORY LA English DT Book Review RP TILFORD, EH (reprint author), USAF,WASHINGTON,DC 20330, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU SOC MILITARY HISTORY PI LEXINGTON PA C/O VIRGINIA MILITARY INST, GEORGE C MARSHALL LIBRARY, LEXINGTON, VA 24450-1600 SN 0899-3718 J9 J MILITARY HIST JI J. Mil. Hist. PD APR PY 1992 VL 56 IS 2 BP 320 EP 321 DI 10.2307/1985824 PG 2 WC History SC History GA HM451 UT WOS:A1992HM45100032 ER PT J AU LALLY, KP CHWALS, WJ WEITZMAN, JJ BLACK, T SINGH, S AF LALLY, KP CHWALS, WJ WEITZMAN, JJ BLACK, T SINGH, S TI HIRSCHSPRUNGS-DISEASE - A POSSIBLE CAUSE OF ANASTOMOTIC FAILURE FOLLOWING REPAIR OF INTESTINAL ATRESIA SO JOURNAL OF PEDIATRIC SURGERY LA English DT Article DE HIRSCHSPRUNGS DISEASE; INTESTINAL ATRESIA, ANASTOMOTIC COMPLICATION ID SURVIVAL C1 WILFORD HALL USAF MED CTR,DEPT SURG,LACKLAND AFB,TX 78236. CHILDRENS HOSP LOS ANGELES,LOS ANGELES,CA. COOK FT WORTH CHILDRENS HOSP,FT WORTH,TX. WAKE FOREST UNIV,BOWMAN GRAY SCH MED,WINSTON SALEM,NC 27103. UNIFORMED UNIV HLTH SCI,DEPT SURG,LACKLAND AFB,TX. NR 13 TC 7 Z9 7 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 APR PY 1992 VL 27 IS 4 BP 469 EP 470 DI 10.1016/0022-3468(92)90339-9 PG 2 WC Pediatrics; Surgery SC Pediatrics; Surgery GA HN273 UT WOS:A1992HN27300013 PM 1522459 ER PT J AU SCHMITT, SM CRONIN, RJ BERG, S AF SCHMITT, SM CRONIN, RJ BERG, S TI ANTERIOR MANDIBULAR SUBAPICAL OSTEOTOMY - A USEFUL TREATMENT FOR PATIENTS WITH SEVERELY WORN MANDIBULAR ANTERIOR TEETH SO JOURNAL OF PROSTHETIC DENTISTRY LA English DT Article AB Rehabilitation of patients with severe dental wear is a complex diagnostic and restorative problem. As wear occurs, space for restorative materials is lost, and unique treatment techniques are needed to provide good esthetics and function. Use of orthognathic surgery to reposition mandibular anterior teeth and supporting alveolar bone can create a more ideal environment for restorative procedures. C1 WILFORD HALL USAF MED CTR,DEPT PROSTHODONT,SGDP,LACKLAND AFB,TX 78236. USAF,MED CTR,DEPT PROSTHODONT,WIESBADEN,GERMANY. NR 9 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 APR PY 1992 VL 67 IS 4 BP 468 EP 471 DI 10.1016/0022-3913(92)90074-K PG 4 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA HL265 UT WOS:A1992HL26500007 PM 1507127 ER PT J AU NEAL, GS HANKINS, GDV AF NEAL, GS HANKINS, GDV TI LEFT MICROTIA IN ONE MONOZYGOTIC TWIN - A CASE-REPORT SO JOURNAL OF REPRODUCTIVE MEDICINE LA English DT Article ID STRUCTURAL DEFECTS AB Monoamniotic twins are rare, with a double survival rate of only 40%. Congenital anomalies, while more common among twins in general, are particularly common in monoamniotic twins, with the increase principally the result of structural defects. Discordant phenotypes have been reported, but a malformation of the external ear in one twin has not. In a case of double survival of monoamniotic twins, one had left microtia and a single umbilical artery. RP NEAL, GS (reprint author), WILFORD HALL USAF MED CTR,DEPT OBSTET & GYNECOL,LACKLAND AFB,TX 78236, USA. NR 10 TC 3 Z9 3 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 APR PY 1992 VL 37 IS 4 BP 375 EP 377 PG 3 WC Obstetrics & Gynecology SC Obstetrics & Gynecology GA HQ247 UT WOS:A1992HQ24700018 PM 1593565 ER PT J AU RUH, R KEARNS, M ZANGVIL, A XU, YR AF RUH, R KEARNS, M ZANGVIL, A XU, YR TI PHASE AND PROPERTY STUDIES OF BORON-CARBIDE BORON-NITRIDE COMPOSITES SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY LA English DT Article; Proceedings Paper CT 92ND ANNUAL MEETING OF THE AMERICAN CERAMIC SOC CY APR 24, 1990 CL DALLAS, TX SP AMER CERAM SOC AB Boron carbide-boron nitride particulate composites were fabricated by vacuum hot-pressing. Near-theoretical densities of B4C were obtained, but percent theoretical densities decreased with increasing amounts of BN. The grain size of B4C and BN was not affected by composition, but the amount of twinning in B4C decreased with increasing BN content. No third phase was found at the B4C-BN interface by analytical STEM analysis. Lattice parameter measurements indicated slight solubility of B4C in BN, but no solubility of BN in B4C for samples hot-pressed at 2250-degrees-C. Room-temperature flexural strength measurements revealed a sharply decreasing strength with increasing BN content up to 40% BN, and then relatively constant values with greater amounts of BN. C1 UNIV ILLINOIS,DEPT MAT SCI,URBANA,IL 61801. UNIV ILLINOIS,MAT RES LAB,URBANA,IL 61801. RP RUH, R (reprint author), USAF,WRIGHT AERONAUT LABS,WRIGHT PATTERSON AFB,OH 45433, USA. NR 18 TC 38 Z9 38 U1 1 U2 7 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 1992 VL 75 IS 4 BP 864 EP 872 DI 10.1111/j.1151-2916.1992.tb04152.x PG 9 WC Materials Science, Ceramics SC Materials Science GA HN328 UT WOS:A1992HN32800015 ER PT J AU MYERSAUSTIN, MEF GREGOIRE, MB AF MYERSAUSTIN, MEF GREGOIRE, MB TI METHODOLOGY DIFFERENCES HAMPER COMPARISON OF STUDY RESULTS - REPLY SO JOURNAL OF THE AMERICAN DIETETIC ASSOCIATION LA English DT Letter C1 KANSAS STATE UNIV AGR & APPL SCI,DEPT HOTEL RESTAURANT INST MANAGEMENT & DIETET,MANHATTAN,KS 66506. RP MYERSAUSTIN, MEF (reprint author), USAF,NUTR MED SERV,SCOTT AFB,IL 62225, USA. NR 0 TC 0 Z9 0 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 APR PY 1992 VL 92 IS 4 BP 426 EP 426 PG 1 WC Nutrition & Dietetics SC Nutrition & Dietetics GA HN739 UT WOS:A1992HN73900011 ER PT J AU ALFANO, S NEGRON, D MOORE, JL AF ALFANO, S NEGRON, D MOORE, JL TI RAPID-DETERMINATION OF SATELLITE VISIBILITY PERIODS SO JOURNAL OF THE ASTRONAUTICAL SCIENCES LA English DT Article AB This paper presents a numerical method to rapidly determine the rise-set times of satellite-satellite and satellite-ground station visibility periods, with the line-of-sight corrected for an oblate Earth. The algorithm uses a space curve modeling technique known as parabolic blending to construct the waveform of the visibility function, psi(t), versus time. The waveform is produced from either uniform or arbitrarily spaced abscissa points, from which rise-set times are obtained by extracting the real roots of a localized cubic polynomial. This algorithm works for all orbital eccentricities and perturbed satellite motion, provided the visibility function, psi(t), does not become discontinous as it could from thrusting or deploying a tether. For this study, the rise-set truth table is constructed using a brute force step-by-step integration with five second intervals; a linear interpolator is then used to locate the crossing times. The simulation results from this algorithm are almost identical to those obtained by modeling satellites subject to first order secular perturbations caused by mass anomalies, with a 95% decrease in computation time over the brute force method. Advantages of this numerical method include compact storage and ease of calculation, making it attractive for supporting ground-based and autonomous onboard satellite operations. C1 USAF,SPACE COMMAND,WASHINGTON,DC 20330. RP ALFANO, S (reprint author), USAF ACAD,DEPT ACOUST,DIV ASTRODYNAM,COLORADO SPRINGS,CO 80840, USA. NR 6 TC 6 Z9 6 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 1992 VL 40 IS 2 BP 281 EP 296 PG 16 WC Engineering, Aerospace SC Engineering GA HZ480 UT WOS:A1992HZ48000007 ER PT J AU NEGRON, D ALFANO, S WRIGHT, DD AF NEGRON, D ALFANO, S WRIGHT, DD TI THE METHOD OF RATIOS SO JOURNAL OF THE ASTRONAUTICAL SCIENCES LA English DT Article AB This paper presents a detailed algorithm to compute a mean visibility report between a range-restricted ground station and a space object, generated by the method of ratios. This method is based upon the limiting orbital characteristics of a space object versus a ground station, which are used to generate a visibility report from an analytical model. For this study, the visibility report is defined as the mean minutes-per-day the space object is above the site's horizon and within sensor range. The computer simulation models orbital motion using first order secular perturbations caused by mass anomalies. The method of ratios reduces computation time by over 97% when the results are compared to a visibility truth table created using the satellite rise-set algorithm developed by Alfano et al. This method can also be used to evaluate all objects in a space catalogue against a network of range-restricted ground stations. Operations personnel can then use this master visibility report to maintain a current database of all space objects visible to a particular ground station, which is central for space surveillance radar sensors to perform efficient tracking. RP NEGRON, D (reprint author), USAF ACAD,DEPT ACOUST,DIV ASTRODYNAM,COLORADO SPRINGS,CO 80840, USA. NR 6 TC 2 Z9 2 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 1992 VL 40 IS 2 BP 297 EP 309 PG 13 WC Engineering, Aerospace SC Engineering GA HZ480 UT WOS:A1992HZ48000008 ER PT J AU RIECHEL, TL WILKES, JS AF RIECHEL, TL WILKES, JS TI REVERSIBLE PLATING AND STRIPPING OF SODIUM AT INERT ELECTRODES IN ROOM-TEMPERATURE CHLOROALUMINATE MOLTEN-SALTS SO JOURNAL OF THE ELECTROCHEMICAL SOCIETY LA English DT Article ID IONIC LIQUIDS; CHLORIDE; ELECTROCHEMISTRY; PROTONS; LEWIS; HCL AB Sodium has been suggested as a possible anode in high energy-density batteries using room temperature chloroaluminate molten salt electrolytes, but it cannot be used directly in typical melts because the reduction of Na+ falls beyond the negative voltage limit. When a neutral melt of 1-methyl-3-ethylimidazolium chloride and aluminum chloride (MEIC/AlCl3) is buffered with NaCl, and excess protons (1-methyl-3-ethylimidazolium chloride/HCl) are added, the negative voltage limit is extended to -2.4 V (vs. an Al/N = 0.6 melt reference electrode) and the reversible plating and stripping of sodium is observed. Compositional data from scanning electron microscopy and energy dispersive spectra (SEM/EDS) verify that a layer of sodium is deposited on the surface of Pt and W electrodes. MEI+ appears to be reduced at nearly the same potential as sodium and probably forms a protective layer on top of the sodium. These plated species are fairly stable on the electrode surface as judged by a constant rest potential over several hours, but can easily be stripped off the electrode by a positive potential scan. These characteristics suggest that sodium is a good candidate for the anode in a rechargeable battery. RP RIECHEL, TL (reprint author), USAF ACAD,FRANK J SEILER RES LAB,COLORADO SPRINGS,CO 80840, USA. NR 14 TC 47 Z9 47 U1 0 U2 4 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 10 SOUTH MAIN STREET, PENNINGTON, NJ 08534 SN 0013-4651 J9 J ELECTROCHEM SOC JI J. Electrochem. Soc. PD APR PY 1992 VL 139 IS 4 BP 977 EP 981 DI 10.1149/1.2069377 PG 5 WC Electrochemistry; Materials Science, Coatings & Films SC Electrochemistry; Materials Science GA HN522 UT WOS:A1992HN52200010 ER PT J AU CHANG, MJ CHOW, LC CHANG, WS MORGAN, MJ AF CHANG, MJ CHOW, LC CHANG, WS MORGAN, MJ TI TRANSIENT-BEHAVIOR OF AXIALLY GROOVED HEAT PIPES WITH THERMAL-ENERGY STORAGE SO JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER LA English DT Article ID PHASE-CHANGE; CONDUCTION AB A novel design of a high-temperature axially grooved heat pipe (HP) incorporated with thermal energy storage (TES) to mitigate pulse heat loads are presented. The transient behavior of the HP/TES device was simulated using a three-dimensional numerical model based on finite-difference approximations. A phase-change material (PCM) encapsulated in cylindrical containers was used as thermal energy storage. The transient response of three different HP/TES configurations were compared: 1) heat pipe with one big empty cylinder installed in the vapor core, 2) heat pipe with one big PCM cylinder, and 3) heat pipe with six small PCM cylinders. From the numerical results, it was found that the PCM is very effective in mitigating the adverse effect of pulse heat loads on normal heat pipe operation. C1 UNIV KENTUCKY, DEPT MECH ENGN, LEXINGTON, KY 40506 USA. WRIGHT RES & DEV CTR, AERO PROP & POWER LAB, WRIGHT PATTERSON AFB, OH 45433 USA. NR 17 TC 5 Z9 5 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 APR-JUN PY 1992 VL 6 IS 2 BP 364 EP 370 DI 10.2514/3.368 PG 7 WC Thermodynamics; Engineering, Mechanical SC Thermodynamics; Engineering GA HX493 UT WOS:A1992HX49300024 ER PT J AU YU, JS CHANG, WS HASKIN, WL AF YU, JS CHANG, WS HASKIN, WL TI USE OF MEMBRANE-TRANSPORT IN AN ABSORPTION THERMAL TRANSFER CYCLE SO JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER LA English DT Article AB A thermal transfer cycle utilizing membrane osmotic transport of water against a pressure rise is investigated from the viewpoint of the operation of a conventional absorption heat pump using an aqueous solution as the working fluid. Physical sorption, similar or equivalent to condensation, of water vapor in the membrane material is considered to be an essential step in the overall process of water transport. The thermal nature of this step, during which the heat of sorption similar in amount to the heat of condensation for water vapor must evolve at the evaporator temperature or lower, disqualifies the system in performance as a heat pump. Simple flow relations for the aqueous sugar solution are derived under simplifying assumptions. A set of numerical calculations is given to show that the inferred steps are well within the limits of thermodynamics. C1 W VIRGINIA INST TECHNOL, DEPT MECH ENGN, MONTGOMERY, WV 25136 USA. WRIGHT LAB, AERO PROP & POWER DIRECTORATE, WRIGHT PATTERSON AFB, OH 45433 USA. WRIGHT LAB, FLIGHT DYNAM DIRECTORATE, WRIGHT PATTERSON AFB, OH 45433 USA. NR 10 TC 5 Z9 5 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 APR-JUN PY 1992 VL 6 IS 2 BP 371 EP 376 DI 10.2514/3.369 PG 6 WC Thermodynamics; Engineering, Mechanical SC Thermodynamics; Engineering GA HX493 UT WOS:A1992HX49300025 ER PT J AU SNYDER, CE GSCHWENDER, LJ RANDOLPH, BB PACIOREK, KJL SHIH, JG CHEN, GJ AF SNYDER, CE GSCHWENDER, LJ RANDOLPH, BB PACIOREK, KJL SHIH, JG CHEN, GJ TI RESEARCH-AND-DEVELOPMENT OF LOW-VOLATILITY LONG LIFE SILAHYDROCARBON-BASED LIQUID LUBRICANTS FOR SPACE SO LUBRICATION ENGINEERING LA English DT Article AB The research and development resulting in a new class of candidate base fluids for liquid lubricants for space mechanical assemblies is presented. These fluids, whose properties are tailorable, have been synthesized in a variety of viscosity grades, all of which demonstrate extremely low volatility characteristics. The critical physical and chemical properties are presented. Data on selected formulations which demonstrate the excellent potential of these fluids for long-life applications in space are presented. C1 TECHNOLUBE PROD,LOS ANGELES,CA. ULTRASYST DEF INC,IRVINE,CA. UNIV DAYTON,RES INST,DAYTON,OH 45469. RP SNYDER, CE (reprint author), USAF,WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433, USA. NR 6 TC 7 Z9 8 U1 14 U2 17 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 APR PY 1992 VL 48 IS 4 BP 325 EP 328 PG 4 WC Engineering, Mechanical SC Engineering GA HP259 UT WOS:A1992HP25900011 ER PT J AU DIMIDUK, DM MIRACLE, DB WARD, CH AF DIMIDUK, DM MIRACLE, DB WARD, CH TI DEVELOPMENT OF INTERMETALLIC MATERIALS FOR AEROSPACE SYSTEMS SO MATERIALS SCIENCE AND TECHNOLOGY LA English DT Review ID HIGH-TEMPERATURE; ALLOYS AB Certain intermetallic materials have undergone an evolutionary process whereby application of some of them could provide major benefits in aerospace systems. The realisation of the potential of intermetallic alloys based on Ti3Al has provided significant hope for making still greater advances in turbine performance through further developments in other intermetallic materials. However, examination of the past four years of progress toward this goal has highlighted the problem that much of the fundamental understanding of process structure property relationships in these materials, which is the technology base upon which their application relies, has simply not been developed and suggests that widespread implementation of these materials lies in the distant future. This paper briefly discusses the problems of employing intermetallics in aerospace systems, reviews recent research progress on selected intermetallic alloys currently under investigation as high temperature structural materials, and assesses the status of intermetallics as turbine engine materials. Specifically, advances and findings from studies carried out during the past few years on alloys of the titanium and nickel aluminides and on intermetallics that are intended for service at temperatures above 1000-degrees-C are discussed. Technical challenges and factors affecting the pace of development are highlighted throughout. RP DIMIDUK, DM (reprint author), USAF,WRIGHT AERONAUT LABS,DIV MET & CERAM,MAT DEV BRANCH,WRIGHT PATTERSON AFB,OH 45433, USA. OI Ward, Charles/0000-0002-5813-439X NR 36 TC 106 Z9 116 U1 0 U2 11 PU INST MATERIALS PI LONDON PA 1 CARLTON HOUSE TERRACE, LONDON, ENGLAND SW1Y 5DB SN 0267-0836 J9 MATER SCI TECH SER JI Mater. Sci. Technol. PD APR PY 1992 VL 8 IS 4 BP 367 EP 375 PG 9 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA HY786 UT WOS:A1992HY78600012 ER PT J AU SHAFER, MR AF SHAFER, MR TI THE EFFECT OF INCREASED ATMOSPHERIC-PRESSURE ON GLUCOSE REAGENT STRIP ACCURACY SO MILITARY MEDICINE LA English DT Article AB Hyperbaric oxygen (HBO) is currently being used throughout the world as an adjunctive therapy for non-healing diabetic wounds. Anecdotal accounts of diabetic patients experiencing hypoglycemic reactions with HBO necessitated glucose testing by fingerstick during treatment dives to 2.4 atmospheres absolute. This study looked at four glucose testing methods and the accuracy of their readings using high and low control solutions at both sea level and at depth. A one-way analysis of variance showed significant differences with all of the high and 75% of the low control solutions when comparing sea level readings to depth readings. The significance varied between reaction rate and end point reading methods, with the reaction rate technology performing better. RP SHAFER, MR (reprint author), ARMSTRONG LAB,DAVIS HYPERBAR LAB,BROOKS AFB,TX 78235, USA. NR 0 TC 2 Z9 2 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 APR PY 1992 VL 157 IS 4 BP 162 EP 165 PG 4 WC Medicine, General & Internal SC General & Internal Medicine GA HN354 UT WOS:A1992HN35400008 PM 1620373 ER PT J AU BAUER, KW WILSON, JR AF BAUER, KW WILSON, JR TI CONTROL-VARIATE SELECTION CRITERIA SO NAVAL RESEARCH LOGISTICS LA English DT Article ID GENERALIZED CONCOMITANT VARIABLES; MULTIRESPONSE SIMULATION; EFFICIENCY; REDUCTION AB For multiresponse simulations requiring point and confidence-region estimators of the mean response, we propose control-variate selection criteria that minimize mean-square confidence-region volume in two situations: (a) Only the mean control vector is known, and standard linear control-variate estimation procedures are used. (b) Covariances among controls are also known and are incorporated into new linear control-variate estimation procedures. An example illustrates the performance of these selection criteria. C1 N CAROLINA STATE UNIV,DEPT IND ENGN,RALEIGH,NC 27695. RP BAUER, KW (reprint author), USAF,INST TECHNOL,DEPT OPERAT SCI,WRIGHT PATTERSON AFB,OH 45433, USA. NR 21 TC 8 Z9 8 U1 0 U2 0 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 1992 VL 39 IS 3 BP 307 EP 321 DI 10.1002/nav.3220390303 PG 15 WC Operations Research & Management Science SC Operations Research & Management Science GA HL946 UT WOS:A1992HL94600002 ER PT J AU BARD, JF MOORE, JT AF BARD, JF MOORE, JT TI AN ALGORITHM FOR THE DISCRETE BILEVEL PROGRAMMING PROBLEM SO NAVAL RESEARCH LOGISTICS LA English DT Article AB The bilevel programming problem (BLPP) is an example of a two-stage, non-cooperative game in which the first player can influence but not control the actions of the second. This article addresses the linear formulation and presents a new algorithm for solving the zero-one case. We begin by converting the leader's objective function into a parameterized constraint, and then attempt to solve the resultant problem. This produces a candidate solution that is used to find a point in the BLPP feasible reagion. Incremental improvements are sought, which ultimately lead to a global optimum. An example is presented to highlight the computations and to demonstrate some basic characteristics of the solution. Computational experience indicates that the algorithm is capable of solving problems with up to 50 variables in a reasonable amount of time. C1 USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433. RP BARD, JF (reprint author), UNIV TEXAS,DEPT MECH ENGN,OPERAT RES GRP,AUSTIN,TX 78712, USA. NR 18 TC 51 Z9 53 U1 0 U2 7 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 1992 VL 39 IS 3 BP 419 EP 435 DI 10.1002/1520-6750(199204)39:3<419::AID-NAV3220390310>3.0.CO;2-C PG 17 WC Operations Research & Management Science SC Operations Research & Management Science GA HL946 UT WOS:A1992HL94600009 ER PT J AU PHILLIPS, WJ WELCH, JH BRASHEAR, BJ AF PHILLIPS, WJ WELCH, JH BRASHEAR, BJ TI A HIGH-TEMPERATURE INFRARED-ABSORPTION GAS SAMPLE CELL SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article AB An infrared absorption sample cell was designed and constructed for use in the temperature range from 300 to 1000 K. The design's emphasis was on maintaining an inert environment to eliminate the possibility of depleting the absorbing gas due to reactions with the sample cell material. This design was successfully used for CO2 4.3-mu-m band absorption measurements in the temperature range extending from 300 to 1000 K. RP PHILLIPS, WJ (reprint author), SVERDRUP TECHNOL INC,AEDC GRP,ARNOLD ENGN DEV CTR,ARNOLD AFB,TN 37389, USA. NR 5 TC 3 Z9 3 U1 1 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD APR PY 1992 VL 63 IS 4 BP 2174 EP 2176 DI 10.1063/1.1143134 PN 1 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA HL552 UT WOS:A1992HL55200011 ER PT J AU NEKKANTI, RM MCQUAY, PA SEMIATIN, SL AF NEKKANTI, RM MCQUAY, PA SEMIATIN, SL TI MEASUREMENT OF HOMOGENIZATION KINETICS FOR A NEAR-GAMMA TITANIUM ALUMINIDE SO SCRIPTA METALLURGICA ET MATERIALIA LA English DT Article ID PHASE RP NEKKANTI, RM (reprint author), WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. RI SEMIATIN, SHELDON/E-7264-2017 NR 14 TC 14 Z9 14 U1 0 U2 3 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 APR 1 PY 1992 VL 26 IS 7 BP 1089 EP 1094 DI 10.1016/0956-716X(92)90235-7 PG 6 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA HK521 UT WOS:A1992HK52100015 ER PT J AU YU, PW FISCHER, DW SIZELOVE, JR AF YU, PW FISCHER, DW SIZELOVE, JR TI PHOTOLUMINESCENCE OF GAAS-RELATED 1.32 EV EMISSION IN BULK GAAS SO SEMICONDUCTOR SCIENCE AND TECHNOLOGY LA English DT Article ID LIQUID-ENCAPSULATED CZOCHRALSKI; INTRINSIC DOUBLE ACCEPTOR; P-TYPE GAAS; GALLIUM-ARSENIDE; INFRARED-ABSORPTION; ANTISITE DEFECTS; IDENTIFICATION; EXCITATION AB A detailed study of the 1.32 eV photoluminescence emission present in p-type GaAs was made at various temperatures and excitation intensities in conjunction with the effects of electron irradiation and infrared absorption measurements. We find that the binding energy of the acceptor responsible for the 1.32 eV emission is not the same as that of the Ga(As)-/Ga(As)-- transition as commonly believed. It is proposed instead that the acceptor responsible for this luminescence is a gallium antisite double acceptor-effective mass donor pair complex, Ga(As)-donor. The activation energy of this complex acceptor is determined to be approximately 197 meV. C1 USAF,WRIGHT AERONAUT LABS,WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP YU, PW (reprint author), WRIGHT STATE UNIV,RES CTR,DAYTON,OH 45435, USA. NR 29 TC 12 Z9 13 U1 1 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA TECHNO HOUSE, REDCLIFFE WAY, BRISTOL, ENGLAND BS1 6NX SN 0268-1242 J9 SEMICOND SCI TECH JI Semicond. Sci. Technol. PD APR PY 1992 VL 7 IS 4 BP 556 EP 561 DI 10.1088/0268-1242/7/4/020 PG 6 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary; Physics, Condensed Matter SC Engineering; Materials Science; Physics GA HR383 UT WOS:A1992HR38300020 ER PT J AU LIOU, LL HUANG, CI EBEL, J AF LIOU, LL HUANG, CI EBEL, J TI NUMERICAL-STUDIES OF THERMAL EFFECTS ON HETEROJUNCTION BIPOLAR-TRANSISTOR CURRENT VOLTAGE CHARACTERISTICS USING ONE-DIMENSIONAL SIMULATION SO SOLID-STATE ELECTRONICS LA English DT Article ID TRANSPORT; GAAS AB Coupling the heat transfer equation with Poisson's and continuity equations in 1-D and taking into account carrier degeneracy, semiconductor band and temperature spatial distributions, the current-voltage characteristics of an n-p-n AlGaAs/GaAs heterojunction bipolar transistor are simulated. The Scharfetter-Gummel expressions for both electron and hole current densities are derived. Both voltage and current boundary conditions at the base contact are used in the calculations. The current modulation nature of bipolar transistor devices is revealed by using the current boundary condition. It is found that the temperature rise due to high current operation causes two effects: the current gain continuously declines after the base push-out is complete; and the negative differential resistance phenomenon occurs in the transistor current-voltage saturation region. RP LIOU, LL (reprint author), USAF,WRIGHT AERONAUT LABS,SOLID STATE ELECTR DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 18 TC 18 Z9 19 U1 1 U2 2 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0038-1101 J9 SOLID STATE ELECTRON JI Solid-State Electron. PD APR PY 1992 VL 35 IS 4 BP 579 EP 585 DI 10.1016/0038-1101(92)90123-T PG 7 WC Engineering, Electrical & Electronic; Physics, Applied; Physics, Condensed Matter SC Engineering; Physics GA HN334 UT WOS:A1992HN33400020 ER PT J AU LINSTER, BG AF LINSTER, BG TI EVOLUTIONARY STABILITY IN THE INFINITELY REPEATED PRISONERS-DILEMMA PLAYED BY 2-STATE MOORE MACHINES SO SOUTHERN ECONOMIC JOURNAL LA English DT Article RP LINSTER, BG (reprint author), USAF ACAD,COLORADO SPRINGS,CO 80840, USA. NR 20 TC 22 Z9 22 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 1992 VL 58 IS 4 BP 880 EP 903 DI 10.2307/1060227 PG 24 WC Economics SC Business & Economics GA HP159 UT WOS:A1992HP15900002 ER PT J AU FORSTER, NH SCHRAND, JB GUPTA, PK AF FORSTER, NH SCHRAND, JB GUPTA, PK TI VISCOELASTIC EFFECTS IN MIL-L-7808-TYPE LUBRICANT .2. EXPERIMENTAL-DATA CORRELATIONS SO TRIBOLOGY TRANSACTIONS LA English DT Article DE TRACTION; VISCOSITY; FILM THICKNESS; TRACTION MODELING AB Viscoelastic behavior of the MIL-L-7808-type lubricant is modeled by correlating experimental traction data to rheological models based on lubricant viscosity, shear modulus and a critical or limiting shear stress. The two types of traction models used respectively employ a hyperbolic sine and inverse hyperbolic tangent function between the viscous shear strain rate and shear stress in the lubricant. While the viscosity-pressure-temperature relation is determined from viscosity measurements on a high-pressure viscometer, estimates of shear modulus and critical or limiting shear stress are derived by curve-fitting the model predictions to actual traction data obtained from a rolling-disk traction machine. C1 PKG INC,CLIFTON PK,NY 12065. RP FORSTER, NH (reprint author), AERO PROPULS & POWER LAB,WRIGHT PATTERSON AFB,OH 45433, USA. NR 6 TC 8 Z9 8 U1 0 U2 4 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 APR PY 1992 VL 35 IS 2 BP 275 EP 280 DI 10.1080/10402009208982118 PG 6 WC Engineering, Mechanical SC Engineering GA HP626 UT WOS:A1992HP62600008 ER PT J AU HANCOCK, RD JACKSON, TA NEJAD, AS AF HANCOCK, RD JACKSON, TA NEJAD, AS TI TECHNIQUE FOR VISUALIZING VAPORLINES EMANATING FROM WATER DROPLETS SO APPLIED OPTICS LA English DT Note AB Water droplets serve as point sources of vapor that react with TiCl4 to form micrometer-sized seed particles that mark the convective transport of water vapor in gaseous flows. RP HANCOCK, RD (reprint author), USAF,WRIGHT AERONAUT LABS,AERO PROPULS & POWER DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 3 TC 3 Z9 3 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 MAR 20 PY 1992 VL 31 IS 9 BP 1163 EP 1166 PG 4 WC Optics SC Optics GA HJ278 UT WOS:A1992HJ27800001 PM 20720733 ER PT J AU DANA, V MANDIN, JY CAMYPEYRET, C FLAUD, JM ROTHMAN, LS AF DANA, V MANDIN, JY CAMYPEYRET, C FLAUD, JM ROTHMAN, LS TI ROTATIONAL AND VIBRATIONAL DEPENDENCES OF COLLISIONAL LINEWIDTHS IN THE N-UPSILON-2-(N-1)UPSILON-2 HOT BANDS OF H2O FROM FOURIER-TRANSFORM FLAME SPECTRA SO APPLIED OPTICS LA English DT Article DE H2O EMISSION SPECTRUM; 2-UPSILON-2-UPSILON-2, 3-UPSILON-2-2-UPSILON-2, 4-UPSILON-2-3-UPSILON-2 HOT BANDS; PREMIXED AIR METHANE FLAME; HIGH-TEMPERATURE COLLISIONAL WIDTHS; 800-1900-CM-1 SPECTRAL REGION ID N2-BROADENING COEFFICIENTS; O-16 LINES; CM-1 AB The collisional widths of approximately 160 transitions belonging mainly to the 2-nu(2)-nu(2), 3-nu(2)-2-nu(2), and 4-nu(2)-3-nu(2) hot bands of the (H2O)-O-16 molecule have been measured on Fourier-transform air-methane flame spectra at 2000 K and analyzed, showing a strong decrease in the collisional widths when the rotational quantum number J increases, as well as a nonnegligible decrease of the collisional widths when the upsilon(2) vibrational quantum number increases. C1 USAF,DIV OPT ENVIRONM,GEOPHYS LAB,BEDFORD,MA 01731. RP DANA, V (reprint author), UNIV PARIS 06,PHYS MOLEC & ATMOSPHER LAB,TOUR 13,4 PL JUSSIEU,F-75252 PARIS 05,FRANCE. NR 10 TC 11 Z9 11 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 MAR 20 PY 1992 VL 31 IS 9 BP 1179 EP 1184 PG 6 WC Optics SC Optics GA HJ278 UT WOS:A1992HJ27800007 PM 20720739 ER PT J AU STONE, DH ROTONDARO, MD AF STONE, DH ROTONDARO, MD TI TRANSIENT THERMAL-LENSING EFFECTS ON THE PERFORMANCE OF REPETITIVELY PULSED SOLID-STATE LASERS SO APPLIED OPTICS LA English DT Article DE REPETITIVE PULSED LASER; ND-YAG LASER; LASER MODELING ID RESONATORS; STABILITY AB A computational model was developed to predict solid-state laser performance in the start-up transient regime of a repetitive pulse operation. Laser output in this regime is sensitive to the interaction of rate-equation, thermal-transport, and beam-propagation effects. A high-repetition-rate operation produces pulse trains that decay at a rate determined by the competition between energy deposition in the rod and surface cooling. Selected pulses in a train turn on and off as the repetition rate is increased because of the varying residual population inversion between pulses. C1 USAF,INST TECHNOL,DEPT ENGN PHYS,WRIGHT PATTERSON AFB,OH 45433. NR 14 TC 3 Z9 3 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 MAR 20 PY 1992 VL 31 IS 9 BP 1314 EP 1317 PG 4 WC Optics SC Optics GA HJ278 UT WOS:A1992HJ27800028 PM 20720760 ER PT J AU CARPER, WR PFLUG, JL WILKES, JS AF CARPER, WR PFLUG, JL WILKES, JS TI MULTIPLE SPIN PROBE NMR-STUDIES OF IONIC STRUCTURE IN 1-METHYL-3-ETHYLIMIDAZOLIUM CHLORIDE ALCL3 MOLTEN-SALTS SO INORGANICA CHIMICA ACTA LA English DT Article ID MAGNETIC-RESONANCE SPECTROSCOPY; QUADRUPOLE COUPLING-CONSTANTS; ALUMINUM; LIQUIDS; NA-23 AB The microdynamics of a room temperature molten salt system consisting of 1-methyl-3-ethylimidazolium chloride (MEICI), AlCl3 and NaCl is investigated by C-13, Na-23 and Al-27 NMR relaxation methods and viscosity measurements. This study supports the existence of a complex containing MEI+, AlCl4- and Na+. The dual spin probe (DSP) method is extended to Na-23, which has a liquid state quadrupole coupling constant of 1.0 MHz in this complex. C1 USAF ACAD,FRANK J SEILER RES LAB,COLORADO SPRINGS,CO 80840. NR 30 TC 13 Z9 13 U1 4 U2 5 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0020-1693 J9 INORG CHIM ACTA JI Inorg. Chim. Acta PD MAR 16 PY 1992 VL 193 IS 2 BP 201 EP 205 PG 5 WC Chemistry, Inorganic & Nuclear SC Chemistry GA HW792 UT WOS:A1992HW79200012 ER PT J AU MCLIN, LN RHODES, JW AF MCLIN, LN RHODES, JW TI VISUAL-ACUITY WITH CENTRAL SIMULATED SCOTOMAS VS REAL RETINAL LESIONS SO INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE LA English DT Meeting Abstract C1 USAF,ARMSTRONG LAB,OEDL,BROOKS AFB,TX 78235. KRUG LIFE SCI INC,SAN ANTINIO,TX. 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 1992 VL 33 IS 4 BP 724 EP 724 PG 1 WC Ophthalmology SC Ophthalmology GA HK135 UT WOS:A1992HK13500164 ER PT J AU DELUCIA, PR AF DELUCIA, PR TI EVEN DURING ACTIVE CONTROL OF SELF-MOTION, COLLISION AVOIDANCE FOR SMALL OBJECTS CAN OCCUR LATER THAN FOR LARGE OBJECTS OF EQUAL DISTANCE AND SPEED SO INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE LA English DT Meeting Abstract C1 USAF,ARM STRONG LAB,WRIGHT PATTERSON AFB,OH 45433. TEXAS TECH UNIV,LUBBOCK,TX 79409. NR 3 TC 2 Z9 2 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 1992 VL 33 IS 4 BP 1144 EP 1144 PG 1 WC Ophthalmology SC Ophthalmology GA HK135 UT WOS:A1992HK13502261 ER PT J AU CARLSON, DW LAMBERT, HM GREEN, RP AF CARLSON, DW LAMBERT, HM GREEN, RP TI CENTRAL SEROUS CHORIORETINOPATHY - VISUAL FUNCTION AND FLUORESCEIN ANGIOGRAPHY 20 YEARS AFTER PRESENTATION SO INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE LA English DT Meeting Abstract C1 UNIV IOWA,IOWA CITY,IA 52242. EMORY UNIV,ATLANTA,GA 30322. USAF,SCH AEROSP MED,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 1992 VL 33 IS 4 BP 1208 EP 1208 PG 1 WC Ophthalmology SC Ophthalmology GA HK135 UT WOS:A1992HK13502566 ER PT J AU CANNON, MW FULLENKAMP, SC AF CANNON, MW FULLENKAMP, SC TI A MODEL FOR HUMAN IMAGE SHARPNESS ESTIMATES SO INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE LA English DT Meeting Abstract C1 USAF,ARMSTRONG LAB,WRIGHT PATTERSON AFB,OH 45433. NR 1 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 1992 VL 33 IS 4 BP 1349 EP 1349 PG 1 WC Ophthalmology SC Ophthalmology GA HK135 UT WOS:A1992HK13503272 ER PT J AU SURYANARAYANA, C LEE, DS AF SURYANARAYANA, C LEE, DS TI PHASE-RELATIONS IN TI-AL-NB ALLOYS AT 1200-PERCENT-C SO SCRIPTA METALLURGICA ET MATERIALIA LA English DT Article ID ELECTRON-DIFFRACTION C1 WRIGHT LAB,MAT DIRECTORATE,DIV MET & CERAM,WRIGHT PATTERSON AFB,OH 45433. RP SURYANARAYANA, C (reprint author), UNIV IDAHO,INST MAT & ADV PROC,MOSCOW,ID 83843, USA. RI Suryanarayana, C/B-9314-2008 NR 16 TC 13 Z9 13 U1 0 U2 1 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 MAR 15 PY 1992 VL 26 IS 6 BP 919 EP 924 DI 10.1016/0956-716X(92)90682-5 PG 6 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA HH634 UT WOS:A1992HH63400010 ER PT J AU SUKONNIK, IM SEMIATIN, SL HAYNES, M AF SUKONNIK, IM SEMIATIN, SL HAYNES, M TI EFFECT OF TEXTURE ON THE COLD-ROLLING BEHAVIOR OF AN ALPHA-2 TITANIUM ALUMINIDE SO SCRIPTA METALLURGICA ET MATERIALIA LA English DT Article ID DEFORMATION C1 WRIGHT LAB,MLLN,WRIGHT PATTERSON AFB,OH 45433. RENSSELAER POLYTECH INST,DEPT MET ENGN,TROY,NY 12180. RP SUKONNIK, IM (reprint author), TEXAS INSTRUMENTS INC,ATTLEBORO,MA 02703, USA. RI SEMIATIN, SHELDON/E-7264-2017 NR 8 TC 5 Z9 5 U1 0 U2 1 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 MAR 15 PY 1992 VL 26 IS 6 BP 993 EP 998 DI 10.1016/0956-716X(92)90696-C PG 6 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA HH634 UT WOS:A1992HH63400024 ER PT J AU DROGE, W MULLERMELLIN, R CLIVER, EW AF DROGE, W MULLERMELLIN, R CLIVER, EW TI SUPEREVENTS - THEIR ORIGIN AND PROPAGATION THROUGH THE HELIOSPHERE FROM 0.3-AU TO 35-AU SO ASTROPHYSICAL JOURNAL LA English DT Article DE INTERPLANETARY MEDIUM; SUN, ACTIVITY; SUN, PARTICLE EMISSION ID COSMIC-RAY MODULATION; ENERGETIC PARTICLES; SHOCK ACCELERATION; SOLAR-WIND; PERIODICITY; FLARES AB Superevents are long-lasting enhancements of the interplanetary particle population that are observed initially in the inner heliosphere (less-than-or-equal-to 1 AU) and that propagate to the outer heliosphere (greater-than-or-equal-to 35 AU) with speeds of almost-equal-to 800 km s-1. Superevents are observed in nuclei at energies up to tens of MeV as well as in MeV electrons and differ distinctly from known intensity increases due to single solar flare particle events, corotating events, and energetic storm particle events. They remain one or more orders of magnitude above background at 1 AU for at least one solar rotation, and their intensity variation with heliolongitude is small. Superevents are associated with local minima of the Galactic cosmic-ray intensity. Between 1974 and 1986 we identified 16 superevents. These events cover a spectrum of sizes, ranging from large, well-defined events to less obvious cases. We examined the solar activity associated with the most prominent superevents and find in general that these events originate in extended (0.5-2 month) episodes of coronal mass ejection (CME) activity from single active regions or narrow ranges of active longitudes. Analyses of the variation of particle peak intensity as a function of time, ecliptic longitude, and radial distance suggests that superevents result when systems of CMEs, with their associated shocks and particle events, create an outward propagating shell encompassing the Sun. The relatively weak negative radial intensity gradients of superevents indicate that local acceleration and trapping, as well as flare-accelerated particles, are key factors in their formation. C1 USAF,PHILLIPS LAB,GEOPHYS DIRECTORATE,BEDFORD,MA 01731. RP DROGE, W (reprint author), UNIV KIEL,INST REINE & ANGEW KERNPHYS,OTTO HAHN PL 1,W-2300 KIEL 1,GERMANY. NR 19 TC 13 Z9 13 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 10 PY 1992 VL 387 IS 2 BP L97 EP L100 PN 2 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA HF939 UT WOS:A1992HF93900011 ER PT J AU HEINE, F HEUMANN, E HUBER, G SCHEPLER, KL AF HEINE, F HEUMANN, E HUBER, G SCHEPLER, KL TI MODE-LOCKING OF ROOM-TEMPERATURE CW THULIUM AND HOLMIUM LASERS SO APPLIED PHYSICS LETTERS LA English DT Article ID YAG AB We report the generation of ultrashort light pulses from cw-pumped Cr, Tm:YAG and Cr, Tm, Ho:YAG lasers actively mode-locked by an acousto-optic modulator. The pulse duration obtained from Tm:YAG was 45 ps which was approximately two times the bandwidth limit. Mode-locked pulses less than 800 ps were also produced in Cr, Tm, Ho:YAG. C1 WRIGHT LAB,ELOS,WRIGHT PATTERSON AFB,OH 45433. RP HEINE, F (reprint author), UNIV HAMBURG,INST ANGEW PHYS,JUNGIUSSTR 11,W-2000 HAMBURG 36,GERMANY. RI Schepler, Kenneth/D-3730-2015; OI Schepler, Kenneth/0000-0001-9658-2305 NR 8 TC 15 Z9 15 U1 0 U2 6 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 MAR 9 PY 1992 VL 60 IS 10 BP 1161 EP 1162 DI 10.1063/1.107391 PG 2 WC Physics, Applied SC Physics GA HH874 UT WOS:A1992HH87400004 ER PT J AU PEARSON, J AF PEARSON, J TI THE MOON AND SETI SO ACTA ASTRONAUTICA LA English DT Article; Proceedings Paper CT 40TH CONGRESS OF THE INTERNATIONAL ASTRONAUTICAL FEDERATION CY OCT 07-13, 1989 CL MALAGA, SPAIN SP INT ASTRONAUT FEDERAT AB Many studies lead to the expectation that millions of planets in the galaxy are suitable for life. Studies of interstellar travel and migration show that the entire galaxy could be colonized in a few million years. Our 4-billion-year old solar system should have been colonized by other civilizations by now. This leads to Fermi's Paradox: where are the extraterrestrials? To answer that question, this paper focuses on the obvious but often overlooked observation that the Earth and the Moon constitute a unique "double planet." Some evidence suggests that the moon was captured early in the history of the solar nebula and profoundly affected Earth's evolution. The Earth may have ended as a frozen, one-plate Mars or a runaway-greenhouse Venus if it had not enjoyed the presence of the Moon. Because of the expected rarity of double planets, we may be alone in our galaxy, and the search for extraterrestrial intelligence (SETI) may be more successful in nearby galaxies than in the Milky Way. RP PEARSON, J (reprint author), USAF,WRIGHT AERONAUT LABS,FIBG,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 1 Z9 1 U1 1 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0094-5765 J9 ACTA ASTRONAUT JI Acta Astronaut. PD MAR-APR PY 1992 VL 26 IS 3-4 BP 151 EP 155 DI 10.1016/0094-5765(92)90087-Y PG 5 WC Engineering, Aerospace SC Engineering GA JF917 UT WOS:A1992JF91700005 ER PT J AU YODER, BA AF YODER, BA TI LONG-DISTANCE PERINATAL TRANSPORT SO AMERICAN JOURNAL OF PERINATOLOGY LA English DT Article AB Mortality, incidence of intraventricular hemorrhage (IVH), and complications were evaluated in a perinatal transport system involving patient movement over distances from 1500 to 3700 km over a 3-year period. Of 179 transports, 60% involved neonatal transport, and 58% of the transports involved infants delivering at 32 weeks' gestation or less. Mortality rates were similar between inborn, maternal, and neonatal transports with a trend toward improved survival in all inborn infants 1000 gm or less at birth. IVH occurred in 32% of infants 32 weeks or less gestation; a higher incidence of grades III/IV bleeding were seen in transported infants between 1001 and 2000 gm compared with maternal transports and all inborn infants. Complications occurred in 20% of transports. The frequency of complications were significantly lower when transport was accomplished by the Level III team. In utero transport of selected high-risk pregnancies is preferred despite the ability to provide safe, effective transport of ill neonates over extremely long distances. RP YODER, BA (reprint author), USAF,MED CTR,DEPT PEDIAT,WILFORD HALL,LACKLAND AFB,TX 78236, USA. NR 0 TC 15 Z9 15 U1 0 U2 2 PU THIEME MEDICAL PUBL INC PI NEW YORK PA 381 PARK AVE SOUTH, NEW YORK, NY 10016 SN 0735-1631 J9 AM J PERINAT JI Am. J. Perinatol. PD MAR PY 1992 VL 9 IS 2 BP 75 EP 79 DI 10.1055/s-2007-994675 PG 5 WC Obstetrics & Gynecology; Pediatrics SC Obstetrics & Gynecology; Pediatrics GA HK268 UT WOS:A1992HK26800002 PM 1590871 ER PT J AU DAVIS, K AF DAVIS, K TI ALTERATIONS TO THE PATIL-SYRACUSE MASK FOR FIBEROPTIC INTUBATION SO ANESTHESIA AND ANALGESIA LA English DT Letter RP DAVIS, K (reprint author), WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78249, USA. NR 5 TC 1 Z9 1 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 MAR PY 1992 VL 74 IS 3 BP 472 EP 473 PG 2 WC Anesthesiology SC Anesthesiology GA HF475 UT WOS:A1992HF47500035 PM 1539835 ER PT J AU SMITH, BA FERGUSON, DB AF SMITH, BA FERGUSON, DB TI ACUTE HYDRALAZINE OVERDOSE - MARKED ECG ABNORMALITIES IN A YOUNG-ADULT SO ANNALS OF EMERGENCY MEDICINE LA English DT Article DE HYDRALAZINE; OVERDOSE AB Although hydralazine is a commonly prescribed antihypertensive agent, reports of acute human poisoning are uncommon. Most of the literature focuses on chronic toxicity, most notably, the drug-induced systemic lupus erythematosus syndrome. A case of acute hydralazine overdose associated with marked ECG ST segment depression in a young adult is presented. Although the patient also had mild hypotension, acidemia, and ethanol intoxication, the ECG abnormality was alarming and suggestive of myocardial ischemia. The patient was managed conservatively in an ICU setting, and the metabolic and ECG abnormalities resolved. No reports of such marked ECG changes associated with acute hydralazine poisoning in a young adult could be found. Clinical and experimental data on acute hydralazine exposure suggest that the possibility of direct drug effects, including positive inotropic and chronotropic effects and myocardial cell injury, should be considered. RP SMITH, BA (reprint author), WILFORD HALL USAF MED CTR,DEPT EMERGENCY MED SGHAE,LACKLAND AFB,TX 78236, USA. NR 0 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 0196-0644 J9 ANN EMERG MED JI Ann. Emerg. Med. PD MAR PY 1992 VL 21 IS 3 BP 326 EP 330 PG 5 WC Emergency Medicine SC Emergency Medicine GA HG268 UT WOS:A1992HG26800018 PM 1536497 ER PT J AU PLETCHER, B AF PLETCHER, B TI 'CECELIAS COMPLAINT' SO ANTIGONISH REVIEW LA English DT Poetry RP PLETCHER, B (reprint author), USAF ACAD,COLORADO SPRINGS,CO 80840, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ST FRANCIS XAVIER UNIV PI ANTIGONISH PA ANTIGONISH NS B2G 1CO, CANADA SN 0003-5661 J9 ANTIGONISH REV JI Antigonish Rev. PD SPR PY 1992 IS 89 BP 146 EP 146 PG 1 WC Literary Reviews SC Literature GA JE842 UT WOS:A1992JE84200050 ER PT J AU LEE, YI SAWAN, SP THIEM, TL TENG, YY SNEDDON, J AF LEE, YI SAWAN, SP THIEM, TL TENG, YY SNEDDON, J TI INTERACTION OF A LASER-BEAM WITH METALS .2. SPACE-RESOLVED STUDIES OF LASER-ABLATED PLASMA EMISSION SO APPLIED SPECTROSCOPY LA English DT Article DE LASER-ABLATED PLASMA; ATOMIC EMISSION; PHOTODIODE ARRAY ID SPECTROSCOPY; TEMPERATURE AB Spatial measurements of the emission spectra of a laser-generated plasma were obtained for copper and lead targets. Results showed that the two metals gave quite different sizes of plasma, the plasma formed with copper extending 2 mm, and that with lead extending 5 mm, above the metal surface. Excitation temperatures of the plasma ranged from 13,200 to 17,200 K for copper and 11,700 to 15,300 K for lead. C1 UNIV MASSACHUSETTS,DEPT CHEM,LOWELL,MA 01854. USAF,PHILLIPS LAB,BEDFORD,MA 01731. UNIV MASSACHUSETTS,DEPT PHYS,LOWELL,MA 01854. NR 11 TC 68 Z9 72 U1 0 U2 4 PU SOC APPLIED SPECTROSCOPY PI FREDERICK PA 201B BROADWAY ST, FREDERICK, MD 21701 SN 0003-7028 J9 APPL SPECTROSC JI Appl. Spectrosc. PD MAR PY 1992 VL 46 IS 3 BP 436 EP 441 DI 10.1366/0003702924125339 PG 6 WC Instruments & Instrumentation; Spectroscopy SC Instruments & Instrumentation; Spectroscopy GA HK265 UT WOS:A1992HK26500006 ER PT J AU EVANS, KR STUTZ, CE TAYLOR, EN EHRET, JE AF EVANS, KR STUTZ, CE TAYLOR, EN EHRET, JE TI INCORPORATION RATE VARIATION AT HETEROINTERFACES DURING III-V MOLECULAR-BEAM EPITAXY SO APPLIED SURFACE SCIENCE LA English DT Article; Proceedings Paper CT 3RD INTERNATIONAL CONF ON THE FORMATION OF SEMICONDUCTOR INTERFACES ( ICFSI-3 ) CY MAY 06-10, 1991 CL ITALIAN NATL RES COUNCIL, ROME, ITALY SP CNR, IST NAZL FIS NUCL, SINCROTRONE TRIESTE, IBM ITALIA, PERKIN ELMER, CASSA RISPARMIO ROMA HO ITALIAN NATL RES COUNCIL ID GROWTH; STRAIN AB Surface composition is known to influence cation and anion incorporation rates (IRs) during III-V molecular beam epitaxy (MBE) at high growth temperatures. Consequently, IRs can vary at heterointerfaces. The present study examines the temporal behavior of IRs during formation of AlGaAs/GaAs, GaInAs/GaAs and GaAsSb/GaAs heterointerfaces. Incorporation rates are deduced from the in situ detection via desorption mass spectrometry of the non-incorporated, or desorbed, fraction of the incident beam. Predicted compositional profiles are calculated from the observed IR variations and show significant enrichment in composition of one of the constituent species at the heterointerface. The predicted compositional profile for the GaInAs/GaAs system is qualitatively verified by X-ray diffraction and photoluminescence measurements on separately grown structures. These results are interpreted on the basis of simple first-order desorption considerations which incorporate strain-dependent activation energies for desorption. RP EVANS, KR (reprint author), WRIGHT LAB,SOLID STATE ELECTR DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 13 TC 4 Z9 4 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0169-4332 J9 APPL SURF SCI JI Appl. Surf. Sci. PD MAR PY 1992 VL 56-8 BP 677 EP 683 DI 10.1016/0169-4332(92)90321-N PN B PG 7 WC Chemistry, Physical; Materials Science, Coatings & Films; Physics, Applied; Physics, Condensed Matter SC Chemistry; Materials Science; Physics GA HM078 UT WOS:A1992HM07800018 ER PT J AU ROTH, RT AF ROTH, RT TI THE IMPACT OF DECREASED DEFENSE SPENDING ON EMPLOYMENT IN THE UNITED-STATES SO ARMED FORCES & SOCIETY LA English DT Article AB The combined pressures of reduced East-West tensions and large budget deficits in the United States have led to the enactment of reduced defense budgets. Future reductions in spending could be 25 percent less in real terms from FY 1990 levels. These decreases will affect employment of active-duty military personnel, DoD civilians, and workers in private sector defense industries. If the reductions in force structure take place at a controlled rate, the necessary cuts among active-duty forces and DoD civilians should be manageable through attrition and reduced accessions. The backlog of authorizations and foreign sales will slow any industrial downturn in the defense sector. The rate and magnitude of the defense spending decreases are smaller than in previous postwar cutbacks, and much of the decrease has already taken place since the peak of authorizations in FY 1985. Although certain individuals will be affected by reductions in defense spending, the overall impact upon the economy will be similar to other structural unemployment. Current job training and economic recovery legislation is sufficient to handle this decrease in spending and the transfer of individuals to the private sector. This analysis concludes that these cutbacks will not significantly affect the macroeconomy of the United States, although certain localities, occupations, and industries may encounter short-term difficulties. RP ROTH, RT (reprint author), USAF ACAD,DEPT ECON & GEOG,COLORADO SPRINGS,CO 80840, USA. NR 32 TC 2 Z9 2 U1 1 U2 5 PU TRANSACTION PERIOD CONSORTIUM PI NEW BRUNSWICK PA DEPT 3091 RUTGERS-THE STATE UNIV OF NJ, NEW BRUNSWICK, NJ 08903 SN 0095-327X J9 ARMED FORCES SOC JI Armed Forces Soc. PD SPR PY 1992 VL 18 IS 3 BP 383 EP 405 DI 10.1177/0095327X9201800305 PG 23 WC Political Science; Sociology SC Government & Law; Sociology GA HR218 UT WOS:A1992HR21800005 ER PT J AU PARKER, JE WINTERS, W AF PARKER, JE WINTERS, W TI EXPRESSION OF GENE-SPECIFIC RNA IN CULTURED-CELLS EXPOSED TO ROTATING 60-HZ MAGNETIC-FIELDS SO BIOCHEMISTRY AND CELL BIOLOGY-BIOCHIMIE ET BIOLOGIE CELLULAIRE LA English DT Article DE 60 HERTZ; ONCOGENE; MESSENGER RNA ID ELECTROMAGNETIC-FIELDS; NUCLEOTIDE-SEQUENCES; MYC ONCOGENE; C-MYC; VIRUS; DNA; RETROVIRUS; ACTIVATION; JUNCTIONS; INVITRO AB Replicate sets of cultures of mouse and of human cells were exposed to cyclic, sine wave, 60-Hz rotating magnetic fields of 1.0 Gs (1 Gs corresponds to 0.1 mT) for 24-, 48-, or 72-h periods. Total RNA extracted from unexposed control and from magnetic field exposed cells was dot blot hybridized to a number of oncogene probes (including v-myc, v-fos, v-raf, and v-Ha-ras), a probe for 3611 murine sarcoma virus, a probe for the 70 000 dalton heat shock protein (hsp70), and a probe for the long terminal repeat sequence of mouse mammary tumor virus. Comparisons of levels of RNA in unexposed and magnetic field exposed cells measured by densitometer readings of resulting autoradiographs revealed no significant increases or decreases in RNA levels in magnetic field exposed cells with the seven probes tested. C1 UNIV TEXAS,HLTH SCI CTR,DEPT MICROBIOL,SAN ANTONIO,TX 78229. RP PARKER, JE (reprint author), ARMSTRONG LAB,DIV DIRECTED ENERGY,RADIOFREQUENCY RADIAT BRANCH,BROOKS AFB,TX 78235, USA. NR 32 TC 8 Z9 8 U1 0 U2 0 PU NATL RESEARCH COUNCIL CANADA PI OTTAWA PA RESEARCH JOURNALS, MONTREAL RD, OTTAWA ON K1A 0R6, CANADA SN 0829-8211 J9 BIOCHEM CELL BIOL JI Biochem. Cell Biol. PD MAR-APR PY 1992 VL 70 IS 3-4 BP 237 EP 241 PG 5 WC Biochemistry & Molecular Biology; Cell Biology SC Biochemistry & Molecular Biology; Cell Biology GA HL947 UT WOS:A1992HL94700009 PM 1325160 ER PT J AU BENNETT, BK AF BENNETT, BK TI THE JACKSONVILLE MUTINY SO CIVIL WAR HISTORY LA English DT Article RP BENNETT, BK (reprint author), USAF,NEWARK,OH, USA. NR 6 TC 2 Z9 2 U1 0 U2 0 PU KENT STATE UNIV PRESS PI KENT PA C/O JOURNALS DEPT, KENT, OH 44242 SN 0009-8078 J9 CIVIL WAR HIST JI Civil War Hist. PD MAR PY 1992 VL 38 IS 1 BP 39 EP 50 PG 12 WC History SC History GA HG202 UT WOS:A1992HG20200002 ER PT J AU LUCEY, D DOLAN, MJ MOSS, CW GARCIA, M HOLLIS, DG WEGNER, S MORGAN, G ALMEIDA, R LEONG, D GREISEN, KS WELCH, DF SLATER, LN AF LUCEY, D DOLAN, MJ MOSS, CW GARCIA, M HOLLIS, DG WEGNER, S MORGAN, G ALMEIDA, R LEONG, D GREISEN, KS WELCH, DF SLATER, LN TI RELAPSING ILLNESS DUE TO ROCHALIMAEA-HENSELAE IN IMMUNOCOMPETENT HOSTS - IMPLICATION FOR THERAPY AND NEW EPIDEMIOLOGIC ASSOCIATIONS SO CLINICAL INFECTIOUS DISEASES LA English DT Article ID CAT-SCRATCH DISEASE; BACILLARY ANGIOMATOSIS; INFECTION; FEVER; IDENTIFICATION; VERRUGA AB Two previously healthy, immunocompetent men had persistent Rochalimaea henselae bacteremia with clinical relapses after courses of antibiotics to which the isolates were ultimately demonstrated susceptible in vitro. Both had sustained tick bites prior to their illnesses, thus demonstrating an association not previously identified, although suspected. The first patient had relapsing fever, constitutional symptoms, and an episode of aseptic meningitis despite therapy with amoxicillin, then with doxycycline, and then with ceftriaxone. Thereafter, he spontaneously became asymptomatic during a span of 2 months of persistent bacteremia. Finally, after 2 weeks of therapy with ceftriaxone plus gentamicin, followed by 4 weeks of therapy with oral ciprofloxacin, his bacteremia was cured. The second man had relapsing fever and constitutional symptoms after courses of tetracycline, then of chloramphenicol, and then of doxycycline. He became permanently asymptomatic after serial 2-week courses of chloramphenicol and erythromycin. The greater efficacy of lysis-centrifugation blood cultures in the recovery of R. henselae was noted. C1 UNIV OKLAHOMA,HLTH SCI CTR,VET ADM MED CTR,INFECT DIS SECT 111-C,921 NE 13TH ST,OKLAHOMA CITY,OK 73104. WILFORD HALL USAF MED CTR,DEPT MED,LACKLAND AFB,TX 78236. WILFORD HALL USAF MED CTR,DEPT PATHOL,LACKLAND AFB,TX 78236. CTR DIS CONTROL,CTR INFECT DIS,DIV BACTERIAL & MYCOT DIS,MENINGITIS & SPECIAL PATHOGENS BRANCH,ATLANTA,GA 30333. CTR DIS CONTROL,CTR INFECT DIS,DIV BACTERIAL & MYCOT DIS,MENINGITIS & SPECIAL PATHOGENS BRANCH,ATLANTA,GA 30333. ROCHE MOLEC SYST,ALAMEDA,CA. NR 31 TC 191 Z9 192 U1 0 U2 2 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 1058-4838 J9 CLIN INFECT DIS JI Clin. Infect. Dis. PD MAR PY 1992 VL 14 IS 3 BP 683 EP 688 PG 6 WC Immunology; Infectious Diseases; Microbiology SC Immunology; Infectious Diseases; Microbiology GA HE701 UT WOS:A1992HE70100008 PM 1562660 ER PT J AU SCHWENDEMAN, CA CLARK, RH YODER, BA NULL, DM GERSTMANN, DR DELEMOS, RA AF SCHWENDEMAN, CA CLARK, RH YODER, BA NULL, DM GERSTMANN, DR DELEMOS, RA TI FREQUENCY OF CHRONIC LUNG-DISEASE IN INFANTS WITH SEVERE RESPIRATORY-FAILURE TREATED WITH HIGH-FREQUENCY VENTILATION AND OR EXTRACORPOREAL MEMBRANE-OXYGENATION SO CRITICAL CARE MEDICINE LA English DT Article DE HIGH-FREQUENCY VENTILATION; EXTRACORPOREAL MEMBRANE OXYGENATION; NEONATAL DISEASES; RESPIRATORY FAILURE; LUNG DISEASES, CHRONIC; HYALINE MEMBRANE DISEASE; HERNIA, DIAPHRAGMATIC, CONGENITAL; MECONIUM ASPIRATION SYNDROME; MECHANICAL VENTILATION; PERSISTENT PULMONARY HYPERTENSION; PNEUMOTHORAX ID CONGENITAL DIAPHRAGMATIC-HERNIA; PERSISTENT PULMONARY-HYPERTENSION; BRONCHOPULMONARY DYSPLASIA; OSCILLATORY VENTILATION; ECMO; MANAGEMENT; NEWBORN; INJURY AB Objective: To assess the frequency of chronic lung disease and factors associated with its development in term infants with severe respiratory failure who receive high-frequency oscillatory ventilation, or high-frequency oscillatory ventilation, and extracorporeal membrane oxygenation (ECMO). Design: Retrospective review of pulmonary outcome of all ECMO candidates admitted to Wilford Hall USAF Medical Center between July 1985 and September 1989. Setting: A tertiary, level III, neonatal ICU accepting regional referrals for high-frequency ventilation and ECMO. Patients: Ninety-four patients who were candidates for ECMO were studied. High-frequency oscillatory ventilation alone was used in 48 infants. Forty-six infants were treated with high-frequency oscillatory ventilation and ECMO. Main Results: Twenty (24%) of 84 survivors developed chronic lung disease. There were no differences in gestational age, birth weight, or gender between those infants who developed chronic lung disease and those infants who did not. Arterial blood gas and ventilatory settings at initiation of high-frequency oscillatory ventilation were similar between those infants who did and those who did not develop chronic disease. Patients who developed chronic lung disease more often had lung hypoplasia (40% vs. 5%) and more often required ECMO (75% vs. 39%) than those patients who did not. In patients without lung hypoplasia, those patients who developed chronic lung disease were older at initiation of high-frequency oscillatory ventilation rescue than those patients who did not develop chronic lung disease (median 91 vs. 46 hrs). Conclusions: The frequency of chronic lung disease in ECMO candidates is clinically important. Factors associated with chronic lung disease in ECMO candidates are: the presence of lung hypoplasia, delayed referral, and the need for ECMO to support gas exchange. C1 WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. SW FDN BIOMED RES,SAN ANTONIO,TX 78284. RI Demenkov, Valentin/B-4755-2014; Shimanovsky, Alexandr/L-8596-2014 OI Demenkov, Valentin/0000-0002-4016-8671; Shimanovsky, Alexandr/0000-0001-8550-1725 FU NHLBI NIH HHS [HL36536] NR 26 TC 19 Z9 19 U1 0 U2 0 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0090-3493 J9 CRIT CARE MED JI Crit. Care Med. PD MAR PY 1992 VL 20 IS 3 BP 372 EP 377 DI 10.1097/00003246-199203000-00014 PG 6 WC Critical Care Medicine SC General & Internal Medicine GA HJ672 UT WOS:A1992HJ67200014 PM 1541098 ER PT J AU COOK, WH RAJENDRAN, AM GROVE, DJ AF COOK, WH RAJENDRAN, AM GROVE, DJ TI AN EFFICIENT NUMERICAL IMPLEMENTATION OF THE BODNER-PARTOM MODEL IN THE EPIC-2 CODE SO ENGINEERING FRACTURE MECHANICS LA English DT Article ID CONSTITUTIVE RELATIONS; STRAIN RATE; DEFORMATION; METALS; EQUATIONS AB The two main objectives of this paper are: (1) to present an efficient numerical scheme based on an iterative radial corrector method for solving the Bodner-Partom equations in the explicit finite element code, EPIC-2, and (2) to compare the EPIC-2 results obtained using two different viscoplastic constitutive models. Two distinctly different viscoplastic models, Johnson-Cook and Bodner-Partom, were considered. Both models predicted similar solutions in most problems. C1 UNIV DAYTON,RES INST,DAYTON,OH 45469. RP COOK, WH (reprint author), USAF,ARMAMENT LAB,EGLIN AFB,FL 32542, USA. RI Rajendran, Arunachalam/A-1615-2010 NR 26 TC 8 Z9 9 U1 1 U2 2 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0013-7944 J9 ENG FRACT MECH JI Eng. Fract. Mech. PD MAR PY 1992 VL 41 IS 5 BP 607 EP 623 DI 10.1016/0013-7944(92)90148-8 PG 17 WC Mechanics SC Mechanics GA HM504 UT WOS:A1992HM50400001 ER PT J AU WEBB, SG SMITH, JC TURCOTTE, JS GARCIA, E AF WEBB, SG SMITH, JC TURCOTTE, JS GARCIA, E TI SENSITIVITY ANALYSIS OF CLOSED-LOOP CONTROL-SYSTEMS ON FLEXIBLE STRUCTURES SO EXPERIMENTAL MECHANICS LA English DT Article AB Local-velocity feedback (LVF) and linear-quadratic Gaussain (LQG) control schemes are implemented on passively tuned reaction mass actuators to control the vibrations of a flexible structure. The structure is lightly damped and possesses closely coupled low-frequency resonant modes. Both LVF and LQG controllers successfully eliminate the structure's vibrations. However, if the passive tuning parameters of the actuators are slightly mistuned, implementing LVF control actually results in an unstable system. On the other hand, LQG control proves to be insensitive to large changes in the passive tuning parameters of the actuators. In fact, the system with LQG control is never unstable, no matter what the actuator's passive tuning parameters are. C1 USAF ACAD,FRANK J SEILER RES LAB,COLORADO SPRINGS,CO 80840. VANDERBILT UNIV,DEPT MECH ENGN,NASHVILLE,TN 37235. RP WEBB, SG (reprint author), USAF ACAD,DEPT ENGN MECH,HQ USAF DFEM,COLORADO SPRINGS,CO 80840, USA. NR 14 TC 0 Z9 0 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 MAR PY 1992 VL 32 IS 1 BP 54 EP 61 DI 10.1007/BF02317986 PG 8 WC Materials Science, Multidisciplinary; Mechanics; Materials Science, Characterization & Testing SC Materials Science; Mechanics GA HR634 UT WOS:A1992HR63400010 ER PT J AU AHMED, SA NEJAD, AS AF AHMED, SA NEJAD, AS TI VELOCITY-MEASUREMENTS IN A RESEARCH COMBUSTOR .1. ISOTHERMAL SWIRLING FLOW SO EXPERIMENTAL THERMAL AND FLUID SCIENCE LA English DT Article DE DUMP COMBUSTOR; FREE VORTEX; SWIRLER AB An experimental investigation of isothermal swirling flow was conducted in a model of a coaxial dump combustor. A free-vortex swirler was designed and fabricated to impart swirl to the flow, A two-component Laser Doppler Velocimeter (LDV) system was used to obtain measurements of the three-dimensional flowfield. A detailed database is provided to facilitate development of turbulence closure models capable of accurate prediction of swirling recirculating flows. The results showed that swirl significantly modified the characteristics of the combustor flowfield and greatly enhanced turbulent mixing. RP AHMED, SA (reprint author), AERO PROPULS & POWER DIRECTORATE,POPT,WL,WRIGHT PATTERSON AFB,OH 45433, USA. NR 18 TC 13 Z9 13 U1 0 U2 2 PU ELSEVIER SCIENCE INC PI NEW YORK PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 SN 0894-1777 J9 EXP THERM FLUID SCI JI Exp. Therm. Fluid Sci. PD MAR PY 1992 VL 5 IS 2 BP 162 EP 174 DI 10.1016/0894-1777(92)90002-M PG 13 WC Thermodynamics; Engineering, Mechanical; Physics, Fluids & Plasmas SC Thermodynamics; Engineering; Physics GA HK052 UT WOS:A1992HK05200002 ER PT J AU LIOU, LL EBEL, J HUANG, CI AF LIOU, LL EBEL, J HUANG, CI TI THE OFFSET VOLTAGE OF HETEROJUNCTION BIPOLAR-TRANSISTORS USING 2-DIMENSIONAL NUMERICAL-SIMULATION WITH CURRENT BOUNDARY-CONDITION SO IEEE TRANSACTIONS ON ELECTRON DEVICES LA English DT Note AB The offset voltage of an emitter-mesa AlGaAs/GaAs heterojunction bipolar transistor was obtained from the transistor's current-voltage characteristics calculated using a two-dimensional numerical simulation with a current boundary condition at the base contact. The results show that the offset voltage strongly depends on the position of the emitter-base p-n junction and on the width of the emitter mesa. RP LIOU, LL (reprint author), WRIGHT LAB,SOLID STATE ELECTR DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 12 TC 8 Z9 8 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 0018-9383 J9 IEEE T ELECTRON DEV JI IEEE Trans. Electron Devices PD MAR PY 1992 VL 39 IS 3 BP 742 EP 745 DI 10.1109/16.123506 PG 4 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA HE799 UT WOS:A1992HE79900043 ER PT J AU SLOBODNIK, AJ WEBSTER, RT ROBERTS, GA AF SLOBODNIK, AJ WEBSTER, RT ROBERTS, GA TI 18-42 GHZ EXPERIMENTAL-VERIFICATION OF MICROSTRIP COUPLER AND OPEN END CAPACITANCE MODELS SO IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES LA English DT Note ID FREQUENCY-DEPENDENT CHARACTERISTICS; ACCURATE MODEL; CHARACTERISTIC IMPEDANCE; DISCONTINUITIES; LINES; DISPERSION; DESIGN AB A cavity resonance technique is used to experimentally verify microstrip coupler and open end capacitance models over the frequency range 18-42 GHz. In addition, these results are confirmed using an alternative version of the technique which directly determines open end discontinuity capacitance. In the second case knowledge of substrate dielectric constant is not required and the method also yields microstrip relative effective dielectric constant. RP SLOBODNIK, AJ (reprint author), USAF,ROME LAB,ELECTROMAGNET & RELIABIL DIRECTORATE,BEDFORD,MA 01731, USA. NR 23 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 0018-9480 J9 IEEE T MICROW THEORY JI IEEE Trans. Microw. Theory Tech. PD MAR PY 1992 VL 40 IS 3 BP 584 EP 587 DI 10.1109/22.121740 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA HH515 UT WOS:A1992HH51500024 ER PT J AU PORTER, JE COLEMAN, JW MOORE, AH AF PORTER, JE COLEMAN, JW MOORE, AH TI MODIFIED KS, AD, AND C-VM TESTS FOR THE PARETO DISTRIBUTION WITH UNKNOWN LOCATION AND SCALE-PARAMETERS SO IEEE TRANSACTIONS ON RELIABILITY LA English DT Article DE GOODNESS-OF-FIT; EMPIRICAL CDF; MONTE-CARLO; PARETO DISTRIBUTION; BEST LINEAR UNBIASED ESTIMATOR; KOLMOGOROV-SMIRNOV TEST; ANDERSON-DARLING TEST; CRAMER-VON MISES TEST ID MODEL AB Standard goodness-of-fit tests based on the empirical Cdf (Edf) require continuous underlying distributions with all parameters specified. In this paper, three modified Edf-type tests, the Kolmogorov-Smirnov (K-S), Anderson-Darling (A-D), and Cramer-von Mises (C-vM), are developed for the Pareto distribution with unknown parameters of location and scale and known shape parameter. The unknown parameters are estimated using best linear unbiased estimators. For each test, Monte Carlo techniques are used to generate critical values for sample sizes 5(5)30 and Pareto shape parameters 0.5(0.5)4.0. The powers of the modified tests are investigated under 8 alternative distributions. In most cases, the powers of the modified K-S, A-D, C-vM tests are considerably higher than the chi-square test. Finally, a functional relationship is identified between the modified K-S & C-vM test statistics and the Pareto shape parameter. This paper provides powerful goodness-of-fit tests to supplement the best linear unbiased estimates. C1 USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433. WRIGHT STATE UNIV,DEPT MANAGEMENT SCI & INFORMAT SYST,DAYTON,OH 45435. NR 23 TC 7 Z9 7 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 0018-9529 J9 IEEE T RELIAB JI IEEE Trans. Reliab. PD MAR PY 1992 VL 41 IS 1 BP 112 EP 117 DI 10.1109/24.126681 PG 6 WC Computer Science, Hardware & Architecture; Computer Science, Software Engineering; Engineering, Electrical & Electronic SC Computer Science; Engineering GA HK752 UT WOS:A1992HK75200019 ER PT J AU DRISCOLL, DM FONG, JMY AF DRISCOLL, DM FONG, JMY TI CONTINENTALITY - A BASIC CLIMATIC PARAMETER REEXAMINED SO INTERNATIONAL JOURNAL OF CLIMATOLOGY LA English DT Article DE CONTINENTALITY; LATITUDE EFFECTS; TEMPERATURE; SURFACE FLUXES; RANGE OF TEMPERATURE; SOLAR RADIATION AB Continentality, a basic control of climate, is difficult to quantify in terms of the factors that govern it. As a result, a chief consequence of continentality, annual range of temperature, has been used as a surrogate. Annual range, however, is determined primarily by seasonal variations in radiation receipts, and attempts at constructing continentality indexes have attempted to compensate for this variation by dividing annual range by the sine of the latitude. In so doing it has been assumed that the latitudinal variation of seasonal radiation increases monotonically with latitude. It is shown that this is not the case; thus, indexes of continentality based on this assumption are flawed. A continentality index based not on annual range of temperature, but on residuals from the regression line of annual temperature range on latitude, is formulated. The result is a maximum of continentality in the location suggested by a qualitative look at the factors influencing it. Additional advantages to this approach are specified. C1 USAF,AIR WEATHER SERV,SCOTT AFB,IL 62225. RP DRISCOLL, DM (reprint author), TEXAS A&M UNIV SYST,DEPT METEOROL,COLLEGE STN,TX 77843, USA. NR 21 TC 13 Z9 14 U1 2 U2 6 PU JOHN WILEY & SONS LTD PI W SUSSEX PA BAFFINS LANE CHICHESTER, W SUSSEX, ENGLAND PO19 1UD SN 0899-8418 J9 INT J CLIMATOL JI Int. J. Climatol. PD MAR PY 1992 VL 12 IS 2 BP 185 EP 192 DI 10.1002/joc.3370120207 PG 8 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA HJ797 UT WOS:A1992HJ79700006 ER PT J AU AHMED, SA NEJAD, AS AF AHMED, SA NEJAD, AS TI PREMIXED, TURBULENT COMBUSTION OF AXISYMMETRICAL SUDDEN EXPANSION FLOWS SO INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW LA English DT Article DE TURBULENT COMBUSTION; PREMIXED, EXPERIMENTAL, AXISYMMETRICAL SUDDEN EXPANSION ID MIXING LAYER AB Velocity and low-frequency combustor pressure oscillations have been measured in a ramjet dump combustor model. The mean and root mean square (rms) values of the turbulent velocity field were obtained using a two-component laser Doppler velocimeter (LDV) system operating in the backscatter mode. Reacting flow data were obtained for premixed propane and air, while isothermal results were collected after replacing the propane with nitrogen. The velocity data indicated substantial differences between the two cases Combustor pressure oscillation data were also obtained. The intensity and frequency of the oscillations were found to be dependent on the inlet velocity, combustor length, and equivalence ratio. Results showed that pressure oscillations were controlled by both vortex kinematics in the combustor and acoustic response of the inlet section. RP AHMED, SA (reprint author), AERO PROP & POWER DIRECTORATE,DIV ADV PROP,WRIGHT PATTERSON AFB,OH 45433, USA. NR 20 TC 5 Z9 5 U1 0 U2 0 PU BUTTERWORTH-HEINEMANN PI WOBURN PA 225 WILDWOOD AVE #UNITB PO BOX 4500, WOBURN, MA 01801-2084 SN 0142-727X J9 INT J HEAT FLUID FL JI Int. J. Heat Fluid Flow PD MAR PY 1992 VL 13 IS 1 BP 15 EP 21 DI 10.1016/0142-727X(92)90055-E PG 7 WC Thermodynamics; Engineering, Mechanical; Mechanics SC Thermodynamics; Engineering; Mechanics GA HG905 UT WOS:A1992HG90500002 ER PT J AU PLAGA, BR ROYSTER, RM DONIGIAN, AM WRIGHT, GB CASKEY, PM AF PLAGA, BR ROYSTER, RM DONIGIAN, AM WRIGHT, GB CASKEY, PM TI FIXATION OF OSTEOCHONDRAL FRACTURES IN RABBIT KNEES - A COMPARISON OF KIRSCHNER WIRES, FIBRIN SEALANT, AND POLYDIOXANONE PINS SO JOURNAL OF BONE AND JOINT SURGERY-BRITISH VOLUME LA English DT Article ID ADHESIVE; REPAIR AB We compared fibrin sealant, polydioxanone (PDS) pins and Kirschner wires in the fixation of osteochondral fractures in rabbit knees. Standardised osteochondral fractures of the right medial femoral condyle were made in 56 adult New Zealand white rabbits. There were equal groups of control knees, and those which had Kirschner-wire, fibrin-sealant or PDS-pin fixation. No external immobilisation was used. One animal from each group was killed at two, three and four weeks. The remaining rabbits were killed at six weeks. A fracture which healed with less than 1 mm of displacement was considered a success. There was successful healing in 29% of the control group, in all of the Kirschner-wire group, in 50% of the fibrin-sealant group, and in 86% of the PDS-pin group. The use of PDS pins appears to be a reliable alternative to the use of metal in the fixation of osteochondral fractures in rabbits. C1 WILFORD HALL USAF MED CTR,DEPT ORTHOPAED SURG,LACKLAND AFB,TX 78236. NR 23 TC 22 Z9 23 U1 1 U2 2 PU BRITISH EDITORIAL SOC BONE JOINT SURGERY PI LONDON PA 22 BUCKINGHAM STREET, LONDON, ENGLAND WC2N 6ET SN 0301-620X J9 J BONE JOINT SURG BR JI J. Bone Joint Surg.-Br. Vol. PD MAR PY 1992 VL 74 IS 2 BP 292 EP 296 PG 5 WC Orthopedics; Surgery SC Orthopedics; Surgery GA HH682 UT WOS:A1992HH68200030 PM 1544972 ER PT J AU ROBERTSON, DD MALL, S AF ROBERTSON, DD MALL, S TI FIBER-MATRIX INTERPHASE EFFECTS UPON TRANSVERSE BEHAVIOR IN METAL-MATRIX COMPOSITES SO JOURNAL OF COMPOSITES TECHNOLOGY & RESEARCH LA English DT Article DE COMPOSITE MICROMECHANICS; METAL-MATRIX COMPOSITES; RESIDUAL THERMAL STRESSES; TRANSVERSE MODULUS; INTERPHASE; INTERFACIAL EFFECTS; PARTIAL BONDING; MICROSTRESSES AB To develop reasonable analytical models and to understand better how the integrity of the fiber-matrix interface in high temperature titanium-based metal-matrix composites affects the overall transverse normal characteristics, a parametric study of various fiber-matrix interface conditions was performed. Analysis methods included both a simplified one-dimensional mathematical model and a finite element analysis using MSC/NASTRAN. First, both strong (perfectly bonded) and vanishingly weak (unbonded) interfaces were examined. Subsequently, to provide for partial bonding, a model that used an elastic-plastic interphase zone between the fiber and matrix was examined. It was found that the variation in the plastic properties (that is, yield stress and strain hardening) of this interphase zone provided the flexibility to model any level of interfacial bonding. C1 USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433. USAF,DEPT AERONAUT & ASTRONAUT,WRIGHT PATTERSON AFB,OH 45433. NR 16 TC 40 Z9 40 U1 1 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 SPR PY 1992 VL 14 IS 1 BP 3 EP 11 PG 9 WC Materials Science, Composites; Polymer Science SC Materials Science; Polymer Science GA JY515 UT WOS:A1992JY51500001 ER PT J AU HOLLKAMP, JJ BATILL, SM AF HOLLKAMP, JJ BATILL, SM TI STRUCTURAL IDENTIFICATION USING ORDER OVERSPECIFIED TIME-SERIES MODELS SO JOURNAL OF DYNAMIC SYSTEMS MEASUREMENT AND CONTROL-TRANSACTIONS OF THE ASME LA English DT Article ID EIGENSYSTEM REALIZATION-ALGORITHM; PARAMETER-IDENTIFICATION; NOISE AB An identification method that uses order overspecified time-series models and a truncated singular value decomposition (SVD) solution is studied. The overspecified model reduces the effects of noise during the identification process, but produces extraneous modes. A backwards approach coupled with a minimum norm approximation, using a truncated SVD solution, enables the system modes to be distinguished from the extraneous modes of the model. Experimental data from a large flexible truss is used to study the effects of varying the truncation of the SVD solution and an order recursive algorithm is used to study the effects of model order. Results show that the SVD may be ineffective in separating the data into signal and noise subspaces. However solutions for highly overspecified model orders exhibit solution properties similar to the minimum norm solution and system and computational modes can be discriminated without a truncated solution. C1 UNIV NOTRE DAME,DEPT AEROSP & MECH ENGN,NOTRE DAME,IN 46556. RP HOLLKAMP, JJ (reprint author), FLIGHT DYNAM DIRECTORATE,WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433, USA. NR 18 TC 8 Z9 8 U1 0 U2 1 PU ASME-AMER SOC MECHANICAL ENG PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 0022-0434 J9 J DYN SYST-T ASME JI J. Dyn. Syst. Meas. Control-Trans. ASME PD MAR PY 1992 VL 114 IS 1 BP 27 EP 33 DI 10.1115/1.2896504 PG 7 WC Automation & Control Systems; Instruments & Instrumentation SC Automation & Control Systems; Instruments & Instrumentation GA HP704 UT WOS:A1992HP70400004 ER PT J AU FROONINCKX, TB SOJKA, JJ AF FROONINCKX, TB SOJKA, JJ TI SOLAR-CYCLE DEPENDENCE OF SPACECRAFT CHARGING IN LOW EARTH ORBIT SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article ID ENVIRONMENT AB Recent experimental evidence has shown that Defense Meteorological Satellite Program (DMSP) polar orbiting spacecraft at 840 km can develop electric potentials as severe as -1430 V while at high magnetic latitudes. To explore this charging region, an analysis of DMSP F6, F7, F8, and F9 satellite precipitating particle and ambient plasma measurements taken during periods of high, medium, and low solar flux is performed. One hundred eighty-four charging events ranging from -46 to -1430 V are identified, and an extreme solar cycle dependence is found as charging is most frequent and severe during solar minimum. Satellite measurements and time-dependent ionospheric model (TDIM) output are used to determine the cause of the solar cycle dependence and to characterize the environments which generate and inhibit these potentials. The electron precipitation associated with various DMSP charging levels is analyzed; it is suggested that precipitating electrons as low as 2 to 3 keV may contribute to charging though higher-energy electrons make greater contributions. Secondary electron production due to incident electrons below 1 keV is shown to inhibit charging. The energetic electron fluxes shown to generate charging do not vary significantly over the solar cycle. Instead, DMSP ambient plasma data and TDIM generated results identify a variation in plasma density over 1 or more orders of magnitude as the cause of the solar cycle dependence, and an ambient plasma density of less than 10(4) cm-3 is found necessary for significant negative charging (greater-than-or-equal-to 100 V) to occur. C1 UTAH STATE UNIV,CTR ATMOSPHER & SPACE SCI,LOGAN,UT 84322. RP FROONINCKX, TB (reprint author), USAF,CTR SPACE FORECAST,FALCON AFB,CO 80912, USA. NR 25 TC 16 Z9 16 U1 1 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 MAR 1 PY 1992 VL 97 IS A3 BP 2985 EP 2996 DI 10.1029/91JA02704 PG 12 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA HG749 UT WOS:A1992HG74900015 ER PT J AU SOBEL, K CLOUTIER, JR AF SOBEL, K CLOUTIER, JR TI EIGENSTRUCTURE ASSIGNMENT FOR THE EXTENDED MEDIUM RANGE AIR-TO-AIR MISSILE SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS LA English DT Note C1 USAF,WRIGHT LABS,GUIDANCE & CONTROLS BRANCH,WL MNAG,EGLIN AFB,FL 32542. RP SOBEL, K (reprint author), CUNY CITY COLL,DEPT ELECT ENGN,NEW YORK,NY 10031, USA. NR 3 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 0731-5090 J9 J GUID CONTROL DYNAM JI J. Guid. Control Dyn. PD MAR-APR PY 1992 VL 15 IS 2 BP 529 EP 531 DI 10.2514/3.20869 PG 3 WC Engineering, Aerospace; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA HK051 UT WOS:A1992HK05100034 ER PT J AU ANDERSON, J AF ANDERSON, J TI HEALTH-CARE QUALITY MANAGEMENT FOR THE 21ST-CENTURY - COUCH,JB SO JOURNAL OF LEGAL MEDICINE LA English DT Book Review RP ANDERSON, J (reprint author), USAF,MED CTR,WRIGHT PATTERSON AFB,OH 45433, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU TAYLOR & FRANCIS PI BRISTOL PA 1900 FROST ROAD, SUITE 101, BRISTOL, PA 19007-1598 SN 0194-7648 J9 J LEGAL MED JI J. Legal Med. PD MAR PY 1992 VL 13 IS 1 BP 115 EP 121 PG 7 WC Law; Social Sciences, Biomedical SC Government & Law; Biomedical Social Sciences GA HP816 UT WOS:A1992HP81600006 ER PT J AU SORGI, P RATEY, J KNOEDLER, D ARNOLD, W COLE, L AF SORGI, P RATEY, J KNOEDLER, D ARNOLD, W COLE, L TI DEPRESSION DURING TREATMENT WITH BETA-BLOCKERS - RESULTS FROM A DOUBLE-BLIND PLACEBO-CONTROLLED STUDY SO JOURNAL OF NEUROPSYCHIATRY AND CLINICAL NEUROSCIENCES LA English DT Article ID AGGRESSIVE BEHAVIORS; PROPRANOLOL; AKATHISIA AB Depressive symptoms were rated during a double-blind placebo-controlled trial of nadolol for chronic aggression. Depressive symptoms were not significantly different in nadolol and placebo groups during any phase of the drug trial. C1 WORCESTER STATE UNIV,WORCESTER,MA. UNIV MASSACHUSETTS,SCH MED,WORCESTER,MA 01605. MEDFIELD STATE UNIV,MEDFIELD,MA. HARVARD UNIV,SCH MED,BOSTON,MA 02115. USAF,MED CTR,SCOTT AFB,IL 62225. USAF,SGHA,WRIGHT PATTERSON AFB,OH 45433. NR 14 TC 9 Z9 9 U1 0 U2 0 PU AMER PSYCHIATRIC ASSOCIATION PI WASHINGTON PA 1400 K ST NW, WASHINGTON, DC 20005 SN 0895-0172 J9 J NEUROPSYCH CLIN N JI J. Neuropsychiatr. Clin. Neurosci. PD SPR PY 1992 VL 4 IS 2 BP 187 EP 189 PG 3 WC Clinical Neurology; Neurosciences; Psychiatry SC Neurosciences & Neurology; Psychiatry GA HT257 UT WOS:A1992HT25700012 PM 1627981 ER PT J AU AHMED, SA NEJAD, AS AF AHMED, SA NEJAD, AS TI SWIRL EFFECTS ON CONFINED FLOWS IN AXISYMMETRICAL GEOMETRIES SO JOURNAL OF PROPULSION AND POWER LA English DT Article ID TURBULENT JET; COAXIAL JETS; COMBUSTOR; VELOCITY AB In this paper the results of an experimental investigation of turbulent swirling flows in a model of a coaxial dump combustor are presented. The objectives of this study are twofold: first, to investigate, understand, and document the effects of inlet swirl on the characteristics of a dump combustor flowfield; second, to provide benchmark experimental data to aid the development of advanced design codes. Two sets of experiments were carried out. The first set examined the effect of swirl number on the flowfield characteristics. The second set studied the effect of inlet swirl profile and its evolution throughout the combustor. The results indicated that swirling motion altered the flowfield and significantly reduced the length of the corner recirculation region. Furthermore, specification of swirl strength is not an all inclusive parameter for swirl performance classification and characterization. RP AHMED, SA (reprint author), WRIGHT RES & DEV CTR,AERO PROPULS & POWER LAB,EXPTL RES BRANCH,WRIGHT PATTERSON AFB,OH 45433, USA. NR 34 TC 20 Z9 20 U1 0 U2 4 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 MAR-APR PY 1992 VL 8 IS 2 BP 339 EP 345 DI 10.2514/3.23483 PG 7 WC Engineering, Aerospace SC Engineering GA HK434 UT WOS:A1992HK43400013 ER PT J AU BIRKAN, MA AF BIRKAN, MA TI LASER PROPULSION - RESEARCH STATUS AND NEEDS SO JOURNAL OF PROPULSION AND POWER LA English DT Article ID SUSTAINED PLASMAS; FLOWING ARGON AB Laser propulsion consists of using energy from a remotely located laser to heat a low-molecular-weight gas to extremely high temperatures and then expand the gas through a nozzle to provide thrust. Because of the potential for high specific impulse with adequate thrust to provide reasonable transit times, laser propulsion can be considered for a wide range of mission applications. This article is an overview of the status of continuous laser propulsion and is based on discussions with the research community and a review of recent literature. It describes some of the challenges and opportunities for close collaboration among fluid mechanics, optics, and plasma physics basic research areas. RP BIRKAN, MA (reprint author), USAF,OFF SCI RES,DIRECTORATE AEROSP SCI,WASHINGTON,DC 20332, USA. NR 58 TC 15 Z9 20 U1 0 U2 2 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 MAR-APR PY 1992 VL 8 IS 2 BP 354 EP 360 DI 10.2514/3.23485 PG 7 WC Engineering, Aerospace SC Engineering GA HK434 UT WOS:A1992HK43400015 ER PT J AU PALMER, DS BARCO, MT BILLY, EJ AF PALMER, DS BARCO, MT BILLY, EJ TI TEMPERATURE EXTREMES PRODUCED ORALLY BY HOT AND COLD LIQUIDS SO JOURNAL OF PROSTHETIC DENTISTRY LA English DT Article AB Thermocycling in vitro is a common way of testing dental materials to aid in establishing suitability for in vivo use. There is no standard temperature range for dental material thermocycling. This research attempts to establish an appropriate temperature range by measuring extremes of temperature achieved orally in human volunteer subjects. By using an intraoral digital thermometer probe, 13 human subjects were observed as they drank very hot and cold liquids. The temperature extremes produced intraorally were measured and adjusted for possible error. The results of this study suggest that a range of O-degrees to 67-degrees-C may be appropriate for dental material thermocycling. C1 USN,SCH DENT,NATL NAVAL DENT CTR,DEPT PROSTHODONT,BETHESDA,MD 20814. USN,CAMP PENDLETON,CA. RP PALMER, DS (reprint author), USAF,HOSP CHANUTE,SGD,CHANUTE,IL 61868, USA. NR 11 TC 96 Z9 98 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 MAR PY 1992 VL 67 IS 3 BP 325 EP 327 DI 10.1016/0022-3913(92)90239-7 PG 3 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA HF661 UT WOS:A1992HF66100009 PM 1507094 ER PT J AU ANDRES, CJ NEWTON, AD SCHRIENER, JE SHORE, JW AF ANDRES, CJ NEWTON, AD SCHRIENER, JE SHORE, JW TI ORBITAL PROSTHESIS FOLLOWING TEMPORAL MUSCLE OR FOREHEAD FLAP RECONSTRUCTION - USE OF OPTICS AND ILLUSIONS SO JOURNAL OF PROSTHETIC DENTISTRY LA English DT Article AB Temporalis myocutaneous flap reconstruction of orbital defects may cause difficulty with fabrication of esthetic orbital prostheses because of limited space. Two patient treatments are presented to show the wide variation in defect size that may be encountered after surgical reconstruction. Methods for using optics and illusions to enhance the esthetic result are also presented. C1 USAF,MED CTR,DEPT PROSTHODONT,WRIGHT PATTERSON AFB,OH 45433. MASSACHUSETTS EYE & EAR HOSP,BOSTON,MA 02114. HARVARD UNIV,SCH MED,BOSTON,MA 02115. UNIV MINNESOTA,SCH DENT,DEPT RESTORAT SCI,MINNEAPOLIS,MN 55455. RP ANDRES, CJ (reprint author), INDIANA UNIV,SCH DENT,DEPT PROSTHODONT,1121 W MICHIGAN ST,INDIANAPOLIS,IN 46202, USA. NR 14 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 0022-3913 J9 J PROSTHET DENT JI J. Prosthet. Dent. PD MAR PY 1992 VL 67 IS 3 BP 390 EP 393 DI 10.1016/0022-3913(92)90255-9 PG 4 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA HF661 UT WOS:A1992HF66100025 PM 1324309 ER PT J AU MALL, S TRACY, GD AF MALL, S TRACY, GD TI CHARACTERIZATION OF FATIGUE BEHAVIOR IN QUASI-ISOTROPIC LAMINATE OF CERAMIC COMPOSITE SO JOURNAL OF REINFORCED PLASTICS AND COMPOSITES LA English DT Article ID MATRIX COMPOSITES; FIBER AB Fatigue damage mechanisms in a quasi-isotropic laminate, [0/2 45/90]s of silicon carbide fiber reinforced calcium-alumino-silicate glass ceramic composite was investigated. Several tests were conducted at different maximum stress levels which introduced varying degree of initial matrix cracking in 90-degrees, 45-degrees and 0-degrees plies. The initial damage and change in modulus was monitored during the fatigue cycling. Specimens with a considerable amount of initial cracking in 0-degrees plies failed in less than 700 cycles, and others did not fail over one million cycles. The results of this study confirmed the findings of the previous studies regarding the existence of fatigue limit in ceramic composites. The fatigue limit did not correspond to the proportional limit of the static test as reported in the previous studies, however, it corresponded to the initial damage or static loading condition where 0-degrees plies were largely intact. RP MALL, S (reprint author), USAF,INST TECHNOL,DEPT AERONAUT & ASTRONAUT,WRIGHT PATTERSON AFB,OH 45433, USA. NR 16 TC 10 Z9 11 U1 0 U2 2 PU TECHNOMIC PUBL CO INC PI LANCASTER PA 851 NEW HOLLAND AVE, BOX 3535, LANCASTER, PA 17604 SN 0731-6844 J9 J REINF PLAST COMP JI J. Reinf. Plast. Compos. PD MAR PY 1992 VL 11 IS 3 BP 243 EP 260 DI 10.1177/073168449201100302 PG 18 WC Materials Science, Composites; Polymer Science SC Materials Science; Polymer Science GA HJ054 UT WOS:A1992HJ05400002 ER PT J AU HOROWITZ, GM HANKINS, GDV AF HOROWITZ, GM HANKINS, GDV TI EARLY-2ND-TRIMESTER USE OF ACYCLOVIR IN TREATING HERPES-ZOSTER IN A BONE-MARROW TRANSPLANT PATIENT - A CASE-REPORT SO JOURNAL OF REPRODUCTIVE MEDICINE LA English DT Article ID VIRUS-INFECTION; VARICELLA PNEUMONIA; APLASTIC-ANEMIA; PREGNANCY AB Bone marrow transplantation from a human leukocyte antigen (HLA)-identical sibling for treatment of severe aplastic anemia among women of reproductive age is becoming more common. Successful pregnancy has been reported to occur in several such patients. A woman delivered a healthy, term, female infant 18 months after a transplant from her HLA-identical sister. Her pregnancy was complicated by disseminated herpes zoster, treated with intravenous acyclovir at 14 weeks' gestation, before the diagnosis of pregnancy. While there have been several case reports involving the use of acyclovir in the third trimester, primarily in the treatment of varicella infections, there have been no previous reports of such an early utilization of this antiviral drug. RP HOROWITZ, GM (reprint author), WILFORD HALL USAF MED CTR,DEPT OBSTET & GYNECOL,LACKLAND AFB,TX 78236, USA. NR 22 TC 7 Z9 7 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 MAR PY 1992 VL 37 IS 3 BP 280 EP 282 PG 3 WC Obstetrics & Gynecology SC Obstetrics & Gynecology GA HK159 UT WOS:A1992HK15900020 PM 1564715 ER PT J AU HENRY, RL AF HENRY, RL TI OPTICAL-INTENSITY FLUCTUATIONS IN REENTRY OBJECT OBSERVATIONS SO JOURNAL OF SPACECRAFT AND ROCKETS LA English DT Note RP HENRY, RL (reprint author), USAF,SYST COMMAND,DIV FOREIGN TECHNOL,WRIGHT PATTERSON AFB,OH 45433, USA. NR 4 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 0022-4650 J9 J SPACECRAFT ROCKETS JI J. Spacecr. Rockets PD MAR-APR PY 1992 VL 29 IS 2 BP 292 EP 293 DI 10.2514/3.26349 PG 2 WC Engineering, Aerospace SC Engineering GA HM954 UT WOS:A1992HM95400023 ER PT J AU SCORDILISKELLEY, C FULLER, J CARLIN, RT WILKES, JS AF SCORDILISKELLEY, C FULLER, J CARLIN, RT WILKES, JS TI ALKALI-METAL REDUCTION POTENTIALS MEASURED IN CHLOROALUMINATE AMBIENT-TEMPERATURE MOLTEN-SALTS SO JOURNAL OF THE ELECTROCHEMICAL SOCIETY LA English DT Article ID IONIC LIQUIDS; CHLORIDE; ELECTROCHEMISTRY; ELECTRODES AB Alkali metal electrochemical reductions at a mercury film electrode (MFE) were studied in AlCl3:MEIC (MEIC = 1-methyl-3-ethylimidazolium chloride) molten salts buffered to a neutral composition with MCl (M = Li, Na, K, Rb, and Cs). The MFE was formed by mercury deposition on a 127-mu-m iridium disk electrode. At the Ir-MFE, the reduction potentials for the Li, Na, K, Rb, and Cs amalgams were observed at -1.16, -1.26, -1.62, -1.67, and -1.75 V (vs. Al/Al(III)), respectively. By comparison of the amalgam reduction potentials in the melts to aqueous data, the formal reduction potentials for the elemental alkali metals in the buffered neutral melts are calculated to be -2.14, -2.15, -2.71, -2.77, and -2.87 V (vs. Al/Al(III)), for Li, Na, K, Rb, and Cs, respectively. The solvation energies for the alkali metals in the chloroaluminate molten salts are calculated to be approximately 4 to 15% lower than aqueous solvation energies. C1 USAF ACAD,FRANK J SEILER RES LAB,COLORADO SPRINGS,CO 80840. RP SCORDILISKELLEY, C (reprint author), UNIV ALABAMA,DEPT CHEM,TUSCALOOSA,AL 35487, USA. NR 28 TC 80 Z9 82 U1 0 U2 10 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 10 SOUTH MAIN STREET, PENNINGTON, NJ 08534 SN 0013-4651 J9 J ELECTROCHEM SOC JI J. Electrochem. Soc. PD MAR PY 1992 VL 139 IS 3 BP 694 EP 699 DI 10.1149/1.2069286 PG 6 WC Electrochemistry; Materials Science, Coatings & Films SC Electrochemistry; Materials Science GA HH077 UT WOS:A1992HH07700011 ER PT J AU KAPLAN, ID PRESTIDGE, BR BAGSHAW, MA COX, RS AF KAPLAN, ID PRESTIDGE, BR BAGSHAW, MA COX, RS TI THE IMPORTANCE OF LOCAL-CONTROL IN THE TREATMENT OF PROSTATIC-CANCER SO JOURNAL OF UROLOGY LA English DT Article DE PROSTATIC NEOPLASMS; ANTIGENS, DIFFERENTIATION; RADIOTHERAPY ID CARCINOMA; IRRADIATION; ANTIGEN; BIOPSY AB In a retrospective analysis of 946 patients with prostatic carcinoma treated with external beam radiotherapy between 1958 and 1989 at Stanford University Hospital the 15-year actuarial clinical local control rate was 77.8 +/- 3.3% for Stanford stage T1, 61.3 +/- 4.4% for stage T2 and 64.9 +/- 4.8% for stage T3 disease. Overall, there was improvement in disease-specific survival without a significant alteration in survival in patients who achieved clinical local control. For the 50 Standford stage T1 cases with local control on clinical examination and a positive post-treatment biopsy a decrease in disease-specific survival was observed. There was no difference in disease-specific survival for comparable stage T2 or T3 cases. In an analysis of patients who underwent ultrasound guided prostatic biopsy performed after irradiation the trend of prostate specific antigen was more important than biopsy results in predicting which patients would have relapse. C1 WILFORD HALL USAF MED CTR,DEPT RADIAT ONCOL,LACKLAND AFB,TX 78236. RP KAPLAN, ID (reprint author), STANFORD UNIV,MED CTR,SCH MED,DEPT RADIAT ONCOL A097,STANFORD,CA 94305, USA. NR 16 TC 64 Z9 64 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 MAR PY 1992 VL 147 IS 3 BP 917 EP 921 PN 2 PG 5 WC Urology & Nephrology SC Urology & Nephrology GA HF976 UT WOS:A1992HF97600036 PM 1538497 ER PT J AU EVANS, KR TAYLOR, EN STUTZ, CE ELSAESSER, DW COLON, JE YEO, YK HENGEHOLD, RL SOLOMON, JS AF EVANS, KR TAYLOR, EN STUTZ, CE ELSAESSER, DW COLON, JE YEO, YK HENGEHOLD, RL SOLOMON, JS TI MOLECULAR-BEAM EPITAXIAL-GROWTH AND CHARACTERIZATION OF ERBIUM-DOPED GAAS AND ALGAAS SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B LA English DT Article; Proceedings Paper CT 11TH WORKSHOP ON MOLECULAR-BEAM EPITAXY CY SEP 16-18, 1991 CL UNIV TEXAS AUSTIN, AUSTIN, TX SP AMER VACUUM SOC HO UNIV TEXAS AUSTIN AB An exploratory study of the molecular-beam epitaxial growth and characterization of Er-doped GaAs and AlGaAs is described. Information regarding incorporation rate, diffusion, and surface riding of Er is obtained via secondary ion mass spectrometry and reflective electron diffraction measurements. Low temperature photoluminescence (PL) measurements near 1.54-mu-m show emission from multiple Er sites in AlGaAs:Er and GaAs:Er. Substrate temperature is found to affect PL spectra in a complicated manner. The dependence of Er-center PL intensity on Er concentration is very nonlinear and peaks at [Er] almost-equal-to 10(19) cm-3. GaAs:Er samples with [Er] = 6 x 10(18) cm-3 are p type with room temperature hole concentrations of 2-5 x 10(16) cm-3. Co-doping with Er and Si dramatically reduces electron concentration from that obtained with Si only, while the presence of Si reduces the Er-center PL intensity. C1 USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433. UNIV DAYTON,RES INST,DAYTON,OH 45469. RP EVANS, KR (reprint author), WRIGHT LAB,SOLID STATE ELECTR DIRECTORATE,ELRA,WRIGHT PATTERSON AFB,OH 45433, USA. NR 7 TC 11 Z9 11 U1 0 U2 0 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 MAR-APR PY 1992 VL 10 IS 2 BP 870 EP 872 DI 10.1116/1.586139 PG 3 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Physics, Applied SC Engineering; Science & Technology - Other Topics; Physics GA HN270 UT WOS:A1992HN27000062 ER PT J AU STUTZ, CE EVANS, KR MARTINEZ, MJ TAYLOR, EN EHRET, JE YU, PW WIE, CR AF STUTZ, CE EVANS, KR MARTINEZ, MJ TAYLOR, EN EHRET, JE YU, PW WIE, CR TI A STUDY OF GAASSB/INALAS INTERFACES GROWN BY MOLECULAR-BEAM EPITAXY SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B LA English DT Article; Proceedings Paper CT 11TH WORKSHOP ON MOLECULAR-BEAM EPITAXY CY SEP 16-18, 1991 CL UNIV TEXAS AUSTIN, AUSTIN, TX SP AMER VACUUM SOC HO UNIV TEXAS AUSTIN AB Solid source molecular-beam epitaxy was used to grow GaAsSb wells of various thicknesses with InAlAs barriers nominally lattice-matched to InP substrates. As-grown quantum wells (QWs) were measured by photoluminescence (PL) to have a monotonic increase in PL peak energy for a decrease in GaAsSb well thickness, indicating QW confinement. Growth interrupts at the GaAsSb/InAlAs interface, using arsenic and/or antimony overpressure, were found to degrade material quality as measured by PL. Thermal annealing up to the substrate growth temperature had no effect on the QW PL peak energies. C1 WRIGHT STATE UNIV,UNIV RES CTR,DAYTON,OH 45435. SUNY BUFFALO,BUFFALO,NY 14260. RP STUTZ, CE (reprint author), WRIGHT LAB,SOLID STATE ELECTR DIRECTORATE,ELR,WRIGHT PATTERSON AFB,OH 45433, USA. NR 8 TC 3 Z9 3 U1 0 U2 1 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 MAR-APR PY 1992 VL 10 IS 2 BP 892 EP 894 DI 10.1116/1.586145 PG 3 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Physics, Applied SC Engineering; Science & Technology - Other Topics; Physics GA HN270 UT WOS:A1992HN27000068 ER PT J AU STEINER, TD HENGEHOLD, RL YEO, YK GODBEY, DJ THOMPSON, PE POMRENKE, GS AF STEINER, TD HENGEHOLD, RL YEO, YK GODBEY, DJ THOMPSON, PE POMRENKE, GS TI NEAR BAND-EDGE PHOTOLUMINESCENCE FROM SI1-XGEX/SI SUPERLATTICES GROWN BY MOLECULAR-BEAM EPITAXY SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B LA English DT Article; Proceedings Paper CT 11TH WORKSHOP ON MOLECULAR-BEAM EPITAXY CY SEP 16-18, 1991 CL UNIV TEXAS AUSTIN, AUSTIN, TX SP AMER VACUUM SOC HO UNIV TEXAS AUSTIN ID STRAINED-LAYER SUPERLATTICES; SI-GE ALLOYS; GAP; LUMINESCENCE AB Sharp, well-resolved near band-edge photoluminescence (PL) has been observed from long-period Si1-xGex/Si superlattices grown by molecular-beam epitaxy, including PL from a 120 angstrom Si/40 angstrom Si1-xGex sample. The sharp PL is due to shallow bound excitons (BE), and consists of a no-phonon (NP) line as well as phonon-assisted lines. The exciton binding energies obtained from the temperature dependence of the BE(NP) lines are in the range of 4-6 meV. C1 USN,RES LAB,WASHINGTON,DC 20375. USAF,OFF SCI RES,WASHINGTON,DC 20332. RP STEINER, TD (reprint author), USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433, USA. NR 19 TC 48 Z9 48 U1 0 U2 0 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 MAR-APR PY 1992 VL 10 IS 2 BP 924 EP 926 DI 10.1116/1.586155 PG 3 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Physics, Applied SC Engineering; Science & Technology - Other Topics; Physics GA HN270 UT WOS:A1992HN27000078 ER PT J AU PAGE, CD SCHMIDT, RE ENGLISH, JH GARDINER, CH HUBBARD, GB SMITH, GC AF PAGE, CD SCHMIDT, RE ENGLISH, JH GARDINER, CH HUBBARD, GB SMITH, GC TI ANTEMORTEM DIAGNOSIS AND TREATMENT OF SARCOCYSTOSIS IN 2 SPECIES OF PSITTACINES SO JOURNAL OF ZOO AND WILDLIFE MEDICINE LA English DT Article DE SARCOCYSTOSIS; SARCOCYSTIS; PSITTACINES; PROTOZOAL DISEASE; ANTIPROTOZOAL DRUG ID BIRDS AB Five eclectus parrots (Eclectus roratus vosmaeri) and four Hispaniolan Amazon parrots Amazona ventralis) acquired sarcocystosis at the Jacksonville Zoological Park during the first 6 mo of 1991. Four of the eclectus parrots and two of the Amazon parrots died as a result of the disease. Sarcocystosis was suspected based on light microscopic findings on tissues taken at necropsy. The organism was further characterized using electron microscopy and was structurally compatible with a Sarcocystis sp. Comparison of serum chemistry values from the surviving birds to values from conspecifics that died supported a strong, presumptive antemortem diagnosis of sarcocystosis. Moderate to severe elevations in creatine phosphokinase, aspartate amino transferase, and lactate dehydrogenase were noted in all affected birds tested. Additionally, muscle biopsies from birds during and after treatment were examined histologically for sarcocysts. One eclectus and two Amazon parrots were successfully treated with 0.5 mg/kg pyrimethamine p.o. and 30 mg/kg trimethoprimsulfadiazine i.m. administered b.i.d. for 30 days. Husbandry practices at the zoo were modified to minimize exposure of psittacine birds to feces of the definitive host, the Virginia opossum (Didelphis virginiana), and to potential transport hosts such as cockroaches. C1 ZOO EXOT PATHOL SERV INC,W SACRAMENTO,CA 95691. USAF,INST PATHOL,DEPT VET PATHOL,WASHINGTON,DC 20306. SW FDN BIOMED RES,SAN ANTONIO,TX 78228. RP PAGE, CD (reprint author), JACKSONVILLE ZOOL PK,JACKSONVILLE,FL 32218, USA. NR 19 TC 18 Z9 18 U1 0 U2 2 PU AMER ASSOC Z00 VETERINARIANS PI MEDIA PA 6 NORTH PENNELL ROAD, MEDIA, PA 19063 SN 1042-7260 J9 J ZOO WILDLIFE MED JI J. Zoo Wildl. Med. PD MAR PY 1992 VL 23 IS 1 BP 77 EP 85 PG 9 WC Veterinary Sciences SC Veterinary Sciences GA HR897 UT WOS:A1992HR89700009 ER PT J AU OH, SI SEMIATIN, SL JONAS, JJ AF OH, SI SEMIATIN, SL JONAS, JJ TI AN ANALYSIS OF THE ISOTHERMAL HOT COMPRESSION TEST SO METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE LA English DT Article ID FLOW AB The nominally isothermal, uniaxial hot compression test has been analyzed with special reference to the effects of temperature nonuniformities and friction on sample deformation and flow stress estimates. A simple one-dimensional analysis was used to establish the influence of initial temperature nonuniformities, strain rate, and the temperature dependence of the flow stress on flow localization tendencies. Noticeable strain concentrations were predicted to occur only at high strain rates (approximately 10 s-1) in materials such as titanium alloys, but not in steels, for typical values of the initial temperature nonuniformity. More extensive numerical (finite element method) simulations of the compression test with various values of the friction shear factor corroborated the conclusions of the flow localization analysis. In addition, it was established that initial temperature nonuniformities, as well as friction, have an almost negligible effect on flow stress data deduced from measurements of average pressure vs true height strain, at least for reductions of the order of 50 pct. The analysis results were supported by observations of the deformation behavior of a near-gamma titanium aluminide and a low-alloy steel. C1 BATTELLE MEM INST,NET SHAPE MFG GRP,COLUMBUS,OH 43201. WRIGHT LAB,WL MLLN,MAT DIRECTORATE,DIV MET & CERAM,WRIGHT PATTERSON AFB,OH 45433. BATTELLE MEM INST,METALWORKING GRP,COLUMBUS,OH 43201. MCGILL UNIV,DEPT MET ENGN,MONTREAL H3A 2A7,QUEBEC,CANADA. RI Jonas, John/A-2773-2008; SEMIATIN, SHELDON/E-7264-2017 OI Jonas, John/0000-0001-7291-6673; NR 15 TC 69 Z9 73 U1 0 U2 7 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 0360-2133 J9 METALL TRANS A PD MAR PY 1992 VL 23 IS 3 BP 963 EP 975 DI 10.1007/BF02675571 PG 13 WC Materials Science, Multidisciplinary SC Materials Science GA HG834 UT WOS:A1992HG83400022 ER PT J AU PARKER, RK ABRAMS, RH AF PARKER, RK ABRAMS, RH TI THE NAVY ROLE IN THE VACUUM-TUBE ELECTRONICS PROGRAM .1. THE TRI-SERVICE-PROGRAM SO MICROWAVE JOURNAL LA English DT Article C1 USN,EXPLORATORY DEV PROJECT VACUUM ELECTR,WASHINGTON,DC. USN,TRISERV DARPA VACUUM ELECTR STEERING GRP,WASHINGTON,DC. UNIV CALIF LOS ANGELES,DEPT DEF,ADVISORY GRP ELECTRON DEVICES,LOS ANGELES,CA 90024. UNIV CALIF LOS ANGELES,USAF,ADV THERMIONICS RES INITIAT PROGRAM,LOS ANGELES,CA 90024. USN,RES LAB,DIV ELECTR SCI & TECHNOL,VACUUM ELECTR BRANCH,WASHINGTON,DC 20375. RP PARKER, RK (reprint author), USN,RES LAB,DIV ELECTR SCI & TECHNOL,VACUUM ELECTR BRANCH,WASHINGTON,DC 20375, USA. NR 1 TC 1 Z9 1 U1 2 U2 2 PU HORIZON HOUSE-MICROWAVE PI NORWOOD PA 685 CANTON ST, NORWOOD, MA 02062 SN 0192-6225 J9 MICROWAVE J JI Microw. J. PD MAR PY 1992 VL 35 IS 3 BP 82 EP & PG 0 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA HK400 UT WOS:A1992HK40000004 ER PT J AU SIMONS, JV AF SIMONS, JV TI HEURISTICS IN FLOW-SHOP SCHEDULING WITH SEQUENCE DEPENDENT SETUP TIMES SO OMEGA-INTERNATIONAL JOURNAL OF MANAGEMENT SCIENCE LA English DT Article DE FLOW SHOP; SCHEDULING; HEURISTICS ID MILP MODEL AB This paper addresses the scheduling of jobs with sequence dependent setup times in a deterministic, static flowshop scenario. Four heuristics are described and compared with three benchmarks which represent generally practiced approaches to scheduling in this environment. Performance results are presented for a series of test problems taken from and comparable to those described in previous research. The results indicate that while sophistication does not necessarily lead to performance improvements, two of the proposed heuristics produce substantially better results than the other methods tested and merit consideration for implementation in practice. RP SIMONS, JV (reprint author), USAF,INST TECHNOL,SCH SYST & LOGIST,DEPT LOGIST MANAGEMENT,WRIGHT PATTERSON AFB,OH 45433, USA. NR 10 TC 28 Z9 32 U1 0 U2 3 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0305-0483 J9 OMEGA-INT J MANAGE S JI Omega-Int. J. Manage. Sci. PD MAR PY 1992 VL 20 IS 2 BP 215 EP 225 DI 10.1016/0305-0483(92)90075-I PG 11 WC Management; Operations Research & Management Science SC Business & Economics; Operations Research & Management Science GA HJ160 UT WOS:A1992HJ16000011 ER PT J AU ARMSTRONG, JW HEIT, JM EDWARDS, RC AF ARMSTRONG, JW HEIT, JM EDWARDS, RC TI AUTOGENOUS CONCHAL CARTILAGE AS A REPLACEMENT AFTER A DISKECTOMY SO ORAL SURGERY ORAL MEDICINE ORAL PATHOLOGY ORAL RADIOLOGY AND ENDODONTICS LA English DT Article ID TEMPOROMANDIBULAR-JOINT; DISK; MANAGEMENT AB A surgical procedure to place autogenous conchal cartilage as an interpositional graft after a diskectomy is described. The apparent advantages of this procedure are as follows: (1) the form of the external ear corresponds to joint morphology; (2) a graft of adequate size can be harvested; (3) the form of the external ear remains unchanged after surgery; (4) the graft can be obtained adjacent to the surgical site; (5) biologically acceptable material is used; (6) the additional expense of allogeneic grafts is avoided; and (7) excellent results have been reported. C1 USAF,REG HOSP,SHEPPARD AFB,TX. DAVID GRANT USAF MED CTR,TRAVIS AFB,CA 94535. USAF,HOSP BARKSDALE,BARKSDALE,LA. NR 13 TC 3 Z9 3 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 MAR PY 1992 VL 73 IS 3 BP 269 EP 272 DI 10.1016/0030-4220(92)90118-A PG 4 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA HJ297 UT WOS:A1992HJ29700004 PM 1545956 ER PT J AU CHIN, CC OATES, DE DRESSELHAUS, G DRESSELHAUS, MS AF CHIN, CC OATES, DE DRESSELHAUS, G DRESSELHAUS, MS TI NONLINEAR ELECTRODYNAMICS OF SUPERCONDUCTING NBN AND NB THIN-FILMS AT MICROWAVE-FREQUENCIES SO PHYSICAL REVIEW B LA English DT Article ID NIOBIUM AB The surface resistance R(s) of NbN and Nb thin films with particular reference to nonlinear effects is reported at high values of the microwave magnetic field H(rf) less-than-or-equal-to 500 Oe using a stripline resonator in the frequency range 0.6 less-than-or-equal-to f less-than-or-equal-to 12 GHz. In the stripline geometry, the microwave current is concentrated on the narrow center conductor. Thus a high microwave current density and, therefore, a high H(rf) can be achieved with moderate power. For Nb thin films, R(s) does not increase with H(rf) for low H(rf) values, as expected from weak-link theory. However, for the NbN thin films, R(s) at temperature T follows a R(s)(T,f) = R(s0)(T,f) + S(T,f)H(rf) dependence, for f < 6 GHz where R(s0)(T,f) is the surface resistance at zero H(rf), and the slope S(T,f) is proportional to f2.3. This nonlinear effect is consistent with Halbritter's weak-link theory. For f > 6 GHz, R(s) shows a plateau in the dependence on H(rf) the magnitude of which varies as f3.5, which is not predicted theoretically. When H(rf) increases above a critical value H(rf)c, the resonance curves for the stripline resonator become asymmetrical and the intermodulation products saturate, indicating strong nonlinearities. The temperature dependence of H(rf)c(T) for Nb, in contrast to NbN, thin films follows that of the dc H(c1). Information on the granularity of NbN, derived from the present study, provides insights into the surface impedance of the granular high-T(c) copper oxide thin films. C1 MIT,PHYS LAB,CAMBRIDGE,MA 02139. USAF,ROME LAB,BEDFORD,MA 01731. MIT,LINCOLN LAB,LEXINGTON,MA 02173. MIT,FRANCIS BITTER NATL MAGNET LAB,CAMBRIDGE,MA 02139. MIT,DEPT ELECT ENGN & COMP SCI,CAMBRIDGE,MA 02139. NR 26 TC 66 Z9 66 U1 1 U2 7 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 MAR 1 PY 1992 VL 45 IS 9 BP 4788 EP 4798 DI 10.1103/PhysRevB.45.4788 PG 11 WC Physics, Condensed Matter SC Physics GA HH418 UT WOS:A1992HH41800032 ER PT J AU SARKAR, AK PETERSON, TL AF SARKAR, AK PETERSON, TL TI FABRICATION AND ELECTRICAL-PROPERTIES OF CERAMIC SUPERCONDUCTOR/POLYMER COMPOSITES SO POLYMER ENGINEERING AND SCIENCE LA English DT Article ID POLYMER COMPOSITE; TC AB Superconductor/polymer composites were prepared by mixing powders representing the Y-Ba-Cu-O and Bi(Pb)-Sr-Ca-Cu-O systems with high-density polyethylene. Their electrical resistivities were measured as a function of temperature. By controlling the powder preparation techniques, it was possible to fabricate composites with superconductive transition to zero resistivity in the Bi(Pb)-Sr-Ca-Cu-O system. These composites can be fabricated in certain desired shapes. C1 UNIV DAYTON,RES INST,DAYTON,OH 45469. RP SARKAR, AK (reprint author), WRIGHT LAB,MAT DIRECTORATE,MLPO,POOX-3,WRIGHT PATTERSON AFB,OH 45433, USA. NR 9 TC 10 Z9 10 U1 0 U2 5 PU SOC PLASTICS ENG INC PI BROOKFIELD CENTER PA 14 FAIRFIELD DR, BROOKFIELD CENTER, CT 06804-0403 SN 0032-3888 J9 POLYM ENG SCI JI Polym. Eng. Sci. PD MAR PY 1992 VL 32 IS 5 BP 305 EP 309 DI 10.1002/pen.760320502 PG 5 WC Engineering, Chemical; Polymer Science SC Engineering; Polymer Science GA HJ564 UT WOS:A1992HJ56400001 ER PT J AU FUNKE, BJ AF FUNKE, BJ TI LEISHMANIASIS UPDATE SO POSTGRADUATE MEDICINE LA English DT Letter RP FUNKE, BJ (reprint author), USAF,LUKE AFB,AZ, USA. NR 3 TC 0 Z9 0 U1 0 U2 0 PU MCGRAW HILL HEALTHCARE PUBLICATIONS PI MINNEAPOLIS PA 4530 WEST 77TH ST, MINNEAPOLIS, MN 55435-5000 SN 0032-5481 J9 POSTGRAD MED JI Postgrad. Med. PD MAR PY 1992 VL 91 IS 4 BP 79 EP 79 PG 1 WC Medicine, General & Internal SC General & Internal Medicine GA HK951 UT WOS:A1992HK95100004 PM 1546029 ER PT J AU SILVERMAN, J MOONEY, JM SHEPHERD, FD AF SILVERMAN, J MOONEY, JM SHEPHERD, FD TI INFRARED VIDEO CAMERAS SO SCIENTIFIC AMERICAN LA English DT Article C1 USAF,ROME LABS,FOCAL PLANE ARRAY BRANCH,BEDFORD,MA 01731. RP SILVERMAN, J (reprint author), USAF,ROME LABS,INFRARED SURVEILLANCE BRANCH,BEDFORD,MA 01731, USA. NR 5 TC 4 Z9 4 U1 0 U2 1 PU SCI AMERICAN INC PI NEW YORK PA 415 MADISON AVE, NEW YORK, NY 10017 SN 0036-8733 J9 SCI AM JI Sci.Am. PD MAR PY 1992 VL 266 IS 3 BP 78 EP 83 PG 6 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA HE863 UT WOS:A1992HE86300015 ER PT J AU MIER, MG LOOK, DC WALTERS, DC BEASLEY, DL AF MIER, MG LOOK, DC WALTERS, DC BEASLEY, DL TI INFRARED TRANSMISSION TOPOGRAPHY FOR WHOLE-WAFER GALLIUM-ARSENIDE MATERIALS CHARACTERIZATION SO SOLID-STATE ELECTRONICS LA English DT Article ID SEMI-INSULATING GAAS; EL2 AB Infrared transmission topography is shown to be useful for evaluating GaAs wafers. Whole-wafer, half-millimeter resolution plots of EL2 density and dislocation density are shown to correlate with plots of saturation current in MESFET devices at an early stage of fabrication. C1 WRIGHT STATE UNIV,RES CTR,DAYTON,OH 45435. RP MIER, MG (reprint author), WRIGHT LAB,ELR,SOLID STATE ELECTR DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 7 TC 7 Z9 7 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0038-1101 J9 SOLID STATE ELECTRON JI Solid-State Electron. PD MAR PY 1992 VL 35 IS 3 BP 319 EP 323 DI 10.1016/0038-1101(92)90235-5 PG 5 WC Engineering, Electrical & Electronic; Physics, Applied; Physics, Condensed Matter SC Engineering; Physics GA HM268 UT WOS:A1992HM26800010 ER PT J AU EASON, JD MILLS, JL BECKETT, WC AF EASON, JD MILLS, JL BECKETT, WC TI HYPERCOAGULABLE STATES IN ARTERIAL THROMBOEMBOLISM SO SURGERY GYNECOLOGY & OBSTETRICS LA English DT Article ID THROMBIN-III DEFICIENCY; YOUNG-ADULTS; COAGULATION; DISEASE; SURGERY AB Hypercoagulable states are disorders of blood coagulation, which include deficiencies of natural anticoagulants, disorders of the fibrinolytic system, presence of antiphospholipid antibody and abnormalities of platelet function. These disorders are well known causes of venous thromboembolic disease and are being recognized in association with arterial thromboembolic occurrences with increasing frequency. The performance of standard prosthetic vascular reconstructions may result in disastrous outcomes in patients with unrecognized and untreated hypercoagulable states. From 1986 to 1990, we identified 12 patients with hypercoagulable states, six of whom presented with evidence of arterial thromboembolism. All of the patients were men who smoked and were somewhat younger than the usual patient with atherosclerosis. Their ages ranged from 41 to 62 years. Four patients presented with ischemic rest pain, one patient with blue toe syndrome and one with rapidly progressive claudication. Four patients had undergone prior vascular reconstruction and two had previous pulmonary emboli. Evaluation of these patients to identify hypercoagulability included determinations of prothrombin time (PT) and partial thromboplastin time (PTT), platelet count, antithrombin III, protein C, free protein S and total protein S levels, along with platelet aggregometry. Two patients had protein S deficiency, one had protein C deficiency, one patient had protein C and S deficiency and two patients had hyperaggregable platelets. Four patients had prosthetic reconstructions and two had autogenous reconstructions. Three of the four patients undergoing prosthetic reconstructions had subsequent loss of limb and one patient died. Only one patient with prosthetic reconstruction had a patent graft on long term anticoagulation. Both patients undergoing autogenous procedures had successful revascularization with limb salvage. RP EASON, JD (reprint author), WILFORD HALL USAF MED CTR,VASC SURG SECT,LACKLAND AFB,TX 78236, USA. OI Mills, Joseph/0000-0002-4955-4384 NR 19 TC 10 Z9 11 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 MAR PY 1992 VL 174 IS 3 BP 211 EP 215 PG 5 WC Obstetrics & Gynecology; Surgery SC Obstetrics & Gynecology; Surgery GA HH218 UT WOS:A1992HH21800008 PM 1542837 ER PT J AU BOWMAN, JS ANGSTADT, JD WAYMACK, JP JAFFERS, GJ AF BOWMAN, JS ANGSTADT, JD WAYMACK, JP JAFFERS, GJ TI A COMPARISON OF TRIPLE-THERAPY WITH DOUBLE-THERAPY IMMUNOSUPPRESSION IN CADAVERIC RENAL-TRANSPLANTATION SO TRANSPLANTATION LA English DT Article ID DRUG THERAPY; CYCLOSPORINE; AZATHIOPRINE; TRIAL; RECIPIENTS; INFECTIONS AB Triple-therapy (low-dose cyclosporine-azathioprine-prednisone) immunosuppression regimen was compared with double-therapy (cyclosporine-prednisone) in 91 consecutive nonrandomized adult cadaveric renal transplant recipients. Both groups were comparable with respect to ethnic diversity, prior transplants, and diabetes. The majority of patients with delayed function (ATN) were maintained on triple therapy, and the use of antilymphocyte agents was more common in the triple-therapy group (52% vs. 7%; P = 0.0001). Triple-therapy patients experienced increased acute rejection episodes (1.4 vs. 0.8 per patient, P = 0.03), required more courses of additional steroid pulse therapy (4.3 vs. 1.6 per patient; P = 0.001), and developed serious infections more frequently (37% vs. 15%; P = 0.05), especially CMV infections (17% vs. 0; P = 0.03), compared with double-therapy patients. However, the increased overall infection rate and CMV infection rate were observed only in those patients who received antilymphocyte agents compared with those who did not (46% vs. 21%; P = 0.02 for all infections, 26% vs. 4%; P = 0.006 for CMV). Additional steroid pulse therapy was associated with increased CMV infections (24% vs. 0;P = 0.03) but not with overall infections. One-year allograft and patient survival were equivalent in both groups. Exclusion of ATN patients from analysis did not alter the findings. This experience confirms the overall efficacy of triple-therapy immunosuppression in renal transplant recipients but suggests that triple therapy may be associated with more acute rejection episodes, greater immunosuppression requirements, and a resultant increase in infections, especially CMV. RP BOWMAN, JS (reprint author), WILFORD HALL USAF MED CTR,DEPT SURG TRANSPLANTAT,LACKLAND AFB,TX 78236, USA. NR 17 TC 17 Z9 17 U1 0 U2 0 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0041-1337 J9 TRANSPLANTATION JI Transplantation PD MAR PY 1992 VL 53 IS 3 BP 556 EP 559 DI 10.1097/00007890-199203000-00012 PG 4 WC Immunology; Surgery; Transplantation SC Immunology; Surgery; Transplantation GA HJ581 UT WOS:A1992HJ58100012 PM 1312752 ER PT J AU ANDRADE, F MORALES, C ANZUETO, A LEVINE, S MAXWELL, L LAWRENCE, R JENKINSON, S AF ANDRADE, F MORALES, C ANZUETO, A LEVINE, S MAXWELL, L LAWRENCE, R JENKINSON, S TI DIAPHRAGM FUNCTION AFTER RESISTIVE BREATHING IN SELENIUM DEFICIENT RATS SO FASEB JOURNAL LA English DT Meeting Abstract C1 UNIV TEXAS,HLTH SCI CTR,SAN ANTONIO,TX 78284. AUCKLAND HOSP,AUCKLAND 3,NEW ZEALAND. WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. RI Andrade, Francisco/F-1258-2011 OI Andrade, Francisco/0000-0002-2460-5798 NR 0 TC 4 Z9 4 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 FEB 26 PY 1992 VL 6 IS 4 BP A960 EP A960 PN 1 PG 1 WC Biochemistry & Molecular Biology; Biology; Cell Biology SC Biochemistry & Molecular Biology; Life Sciences & Biomedicine - Other Topics; Cell Biology GA HG719 UT WOS:A1992HG71900139 ER PT J AU NELSON, AG WOLF, EG HEARON, CM LI, B AF NELSON, AG WOLF, EG HEARON, CM LI, B TI HYPERBARIC OXYGENATION (HBO) AND METABOLIC ENZYMES IN THE DIAPHRAGM SO FASEB JOURNAL LA English DT Meeting Abstract C1 LOUISIANA STATE UNIV,DEPT KINESIOL,BATON ROUGE,LA 70803. USAF,AL AOH,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 FEB 26 PY 1992 VL 6 IS 4 BP A964 EP A964 PN 1 PG 1 WC Biochemistry & Molecular Biology; Biology; Cell Biology SC Biochemistry & Molecular Biology; Life Sciences & Biomedicine - Other Topics; Cell Biology GA HG719 UT WOS:A1992HG71900160 ER PT J AU PATTERSON, W VALTIER, S HENSLEY, R LEWIS, P LAVEAU, P AF PATTERSON, W VALTIER, S HENSLEY, R LEWIS, P LAVEAU, P TI FLOW CYTOMETRIC MEASUREMENT OF PLATELET ACTIVATION AND SECRETION INDUCED BY TRANSLUMINAL ANGIOPLASTY IN HUMANS WITH FOCAL ATHEROSCLEROSIS SO FASEB JOURNAL LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,CLIN INVEST DIRECTORATE,LACKLAND AFB,TX 78236. WILFORD HALL USAF MED CTR,DEPT CARDIOL,LACKLAND AFB,TX 78236. 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 FEB 26 PY 1992 VL 6 IS 4 BP A1599 EP A1599 PN 1 PG 1 WC Biochemistry & Molecular Biology; Biology; Cell Biology SC Biochemistry & Molecular Biology; Life Sciences & Biomedicine - Other Topics; Cell Biology GA HG719 UT WOS:A1992HG71903834 ER PT J AU SELF, DA KROCK, LP WHITE, CD OWENS, RW FANTON, JW LATHAM, RD AF SELF, DA KROCK, LP WHITE, CD OWENS, RW FANTON, JW LATHAM, RD TI DETERMINATION OF OPEN-LOOP GAIN IN THE INTACT CONSCIOUS BABOON USING SHORT-TERM PRESSURE REGULATION UNDER HYPERGRAVITY CONDITIONS SO FASEB JOURNAL LA English DT Meeting Abstract C1 ARMSTRONG LAB,LACR,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 FEB 26 PY 1992 VL 6 IS 4 BP A1523 EP A1523 PN 1 PG 1 WC Biochemistry & Molecular Biology; Biology; Cell Biology SC Biochemistry & Molecular Biology; Life Sciences & Biomedicine - Other Topics; Cell Biology GA HG719 UT WOS:A1992HG71903396 ER PT J AU WHITE, CD KOENIG, SC FANTON, JW LATHAM, RD AF WHITE, CD KOENIG, SC FANTON, JW LATHAM, RD TI CHRONICALLY INSTRUMENTED CARDIOVASCULAR HUMAN SURROGATE MODEL IN ALTERED G ENVIRONMENTS SO FASEB JOURNAL LA English DT Meeting Abstract C1 ARMSTRONG LAB,LACR,BROOKS AFB,TX. 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 FEB 26 PY 1992 VL 6 IS 4 BP A1516 EP A1516 PN 1 PG 1 WC Biochemistry & Molecular Biology; Biology; Cell Biology SC Biochemistry & Molecular Biology; Life Sciences & Biomedicine - Other Topics; Cell Biology GA HG719 UT WOS:A1992HG71903360 ER PT J AU REYNOLDS, DC EVANS, KR STUTZ, CE WU, PW AF REYNOLDS, DC EVANS, KR STUTZ, CE WU, PW TI SENSITIVITY OF RESONANT EXCITATION AND PHOTOLUMINESCENCE EXCITATION MEASUREMENTS TO EXCITON LOCALIZATION EFFECTS IN GAAS/ALGAAS QUANTUM-WELLS SO APPLIED PHYSICS LETTERS LA English DT Article ID MOLECULAR-BEAM EPITAXY; INTERFACE DISORDER; LIGHT-HOLE; GROWTH; FLUCTUATIONS; SUPERLATTICE; INTERRUPTION; TEMPERATURE; QUALITY AB Low temperature (2 K) photoluminescence (PL), PL excitation (PLE), and resonant excitation (RE) measurements on a very high quality, 150-angstrom-wide GaAs/Al0.3Ga0.7As multiquantum well structure are reported, with a focus on exciton localization effects. The PL spectra show evidence of effective submonolayer well width fluctuations. Excitons observed via RE are found to be predominantly localized; i.e., they decay from the same effective well-width region in which they are formed, while both localized and delocalized excitons are observed in PLE measurements. Delocalized excitons are free to diffuse to differing effective well-width regions which are energetically accessible. These results are supported by time-resolved PL measurements, which show essentially identical time-responses for differing effective well-width regions under resonant excitation conditions, thereby demonstrating the localized nature of resonantly created excitons. C1 WRIGHT LAB,SOLID STATE ELECTR DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. WRIGHT STATE UNIV,RES CTR,DAYTON,OH 45435. RP REYNOLDS, DC (reprint author), SE CTR ELECT ENGN EDUC,ST CLOUD,FL 32769, USA. NR 16 TC 6 Z9 6 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 FEB 24 PY 1992 VL 60 IS 8 BP 962 EP 964 DI 10.1063/1.106475 PG 3 WC Physics, Applied SC Physics GA HE661 UT WOS:A1992HE66100015 ER PT J AU GRIFFITHS, TR PHILLIPS, NJ AF GRIFFITHS, TR PHILLIPS, NJ TI EFFECT OF TEMPERATURE UPON HYPERSENSITIVE TRANSITIONS IN LANTHANIDES - EXPERIMENTAL-TECHNIQUES AND PRELIMINARY-RESULTS FOR THE 4I9/2-]4G5/2 TRANSITION OF NDCL6(3-) IN CHLORIDE MELTS BETWEEN AMBIENT AND 650-DEGREES-C SO JOURNAL OF ALLOYS AND COMPOUNDS LA English DT Article ID SPECTRA AB The decrease in intensity with temperature increase of the I-4(9/2) --> 4G5/2 hypersensitive transition of NdCl63- in chloride melts has been determined for the first time between 22 and 650-degrees-C. Between ambient and 100-degrees-C the room temperature melt AlCl3-MEIC (where MEIC denotes 1-methyl-3-ethylimidazolium chloride) was used, and the LiCl-KCl eutectic for between 450 and 650-degrees-C. It was established that in all melts only the species NdCl63- was present. The technique for recording accurate high temperature spectra, involving optical fibers, is described, and the limitations imposed by mathematical smoothing upon narrow lanthanide spectra are discussed, with reference to the spectrum of SmCl63-. The intensity of the hypersensitive transition in NdCl63- was determined from direct observation (22-degrees-C) and fourth-derivative spectra (450-degrees-C and above). It is suggested that the temperature sensitivity of the hypersensitive transition provides support for the hypothesis that its mechanism involves vibronic contributions: the other two major plausible mechanisms that have been proposed do not contain temperature-dependent features. C1 UNIV LEEDS,SCH CHEM,LEEDS LS2 9JT,W YORKSHIRE,ENGLAND. RP GRIFFITHS, TR (reprint author), USAF ACAD,FRANK J SEILER RES LAB,COLORADO SPRINGS,CO 80840, USA. NR 22 TC 4 Z9 4 U1 0 U2 0 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0925-8388 J9 J ALLOY COMPD JI J. Alloy. Compd. PD FEB 21 PY 1992 VL 179 BP 87 EP 98 DI 10.1016/0925-8388(92)90208-Q PG 12 WC Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Chemistry; Materials Science; Metallurgy & Metallurgical Engineering GA HG643 UT WOS:A1992HG64300016 ER PT J AU PAIGE, HL SCHWARTZ, M AF PAIGE, HL SCHWARTZ, M TI ABINITIO STUDY OF CONFORMATIONAL ENERGIES AND ROTATIONAL BARRIERS IN A CHLOROFLUOROETHANE SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article ID MOLECULAR-ORBITAL METHODS; GAUSSIAN-BASIS SETS; SEMIEMPIRICAL METHODS; ELECTRONIC-STRUCTURE; VIBRATIONAL-SPECTRA; PARAMETERS; 1,2-DIFLUOROETHANE; OPTIMIZATION; GEOMETRIES AB The geometries and relative energies of the equilibrium- and transition-state conformations of 1,1,2-trichloro-1,2,2-trifluoroethane were studied by ab initio calculations using basis sets ranging from 3-21G through 6-311G(2df). Bond lengths and angles calculated with the 6-31G(d) and 6-311G(d) bases were in close agreement with each other and with experimental results. Comparable energies of the equilibrium conformers and torsional barriers were obtained by MP2 calculations using the 6-31G(d), 6-311G(d), and 6-311G(2df) bases. The calculated equilibrium energy difference is in qualitative agreement with experimental results. Scaled vibrational frequencies calculated with the 6-31G(d) basis set are also in substantial agreement with experimental data for the equilibrium conformers. It was concluded that results using the 6-31G(d) basis set provide satisfactory structural parameters and conformational energies, comparable to those obtained using larger polarized bases. C1 UNIV N TEXAS,DEPT CHEM,DENTON,TX 76203. WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433. NR 34 TC 5 Z9 5 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 FEB 20 PY 1992 VL 96 IS 4 BP 1702 EP 1705 DI 10.1021/j100183a038 PG 4 WC Chemistry, Physical SC Chemistry GA HF283 UT WOS:A1992HF28300038 ER PT J AU POMRENKE, GS SILKOWSKI, E COLON, JE TOPP, DJ YEO, YK HENGEHOLD, RL AF POMRENKE, GS SILKOWSKI, E COLON, JE TOPP, DJ YEO, YK HENGEHOLD, RL TI LUMINESCENCE OF THULIUM IN III-V-SEMICONDUCTORS AND SILICON SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID PHOTO-LUMINESCENCE; OPTICAL-PROPERTIES; INP-YB; PHOTOLUMINESCENCE; YB-3+; EXCITATION; GAP; ER AB Thulium (Tm) emissions were investigated in 390 keV, Tm-implanted AlGaAs, GaAs, InP, and Si using photoluminescence spectroscopy. The emissions in the different semiconductors were observed in the 1.20 to 1.35-mu-m region and are attributed to transitions between the crystal-field-split spin-orbit levels H-3(5-) H-3(6) of Tm3+ (4f12). The main emission in GaAs is located at 1.233-mu-m and shows doublet structure with a width for each component of better than 0.15 meV at 6 K. Anneal temperature dependent studies identify multiple sites as the source of the Tm3+ emissions. The optimum anneal temperatures of Tm-implanted GaAs and AlGaAs are between 725 and 750-degrees-C, for 10- or 15-min anneals, whereas InP:Tm appears to have the strongest emissions in the 575 to 625-degrees-C temperature range. The intracenter Tm3+ emissions for Si:Tm were observed at 850-degrees-C. Sample temperature dependent studies of Tm3+ emissions show that the sharp emissions can be seen to as high a temperature as 240 K for specific samples. Luminescence intensity studies as a function of excitation laser power in GaAs:Tm and AlGaAs:Tm exhibit a sublinear relationship. Lifetime measurements at 10 K of the main 1.233-mu-m line found two decay components with times of 0.5 +/- 0.3-mu-s and 2.6 +/- 0.3-mu-s. Selective excitation studies indicate that free carriers and/or excitons are involved in the excitation of the Tm centers. C1 USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433. NR 37 TC 19 Z9 19 U1 0 U2 4 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 FEB 15 PY 1992 VL 71 IS 4 BP 1919 EP 1926 DI 10.1063/1.351181 PG 8 WC Physics, Applied SC Physics GA HE698 UT WOS:A1992HE69800054 ER PT J AU KIM, SJ BIRNIE, DP ARUCHAMY, A UHLMANN, DR ELBAYOUMI, OH SUSCAVAGE, MJ AF KIM, SJ BIRNIE, DP ARUCHAMY, A UHLMANN, DR ELBAYOUMI, OH SUSCAVAGE, MJ TI PHASE-SEPARATION IN BI-SR-CA-CU-O MELTS DURING QUENCHING SO PHYSICA C LA English DT Article ID SYSTEM; SUPERCONDUCTIVITY AB Phase separation is found for the first time in quenched samples of amorphous Bi2Sr2Ca1Cu2Ox (often called "2212" composition). Clear evidence for metastable phase separation is found using X-ray diffraction (XRD), transmission electron microscopy (TEM), and differential thermal analysis (DTA). This has serious implications for possible fabrication of high current density devices from these compositions, especially via glass-ceramic processing routes. C1 USAF,ROME AIR DEV COMMAND,BEDFORD,MA 01731. RP KIM, SJ (reprint author), UNIV ARIZONA,DEPT MAT SCI & ENGN,TUCSON,AZ 85721, USA. OI Birnie, Dunbar/0000-0001-6044-2300 NR 7 TC 11 Z9 11 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 FEB 15 PY 1992 VL 191 IS 3-4 BP 316 EP 320 DI 10.1016/0921-4534(92)90924-2 PG 5 WC Physics, Applied SC Physics GA HJ688 UT WOS:A1992HJ68800003 ER PT J AU SOREF, RA BENNETT, BR AF SOREF, RA BENNETT, BR TI ELECTROOPTIC FABRY-PEROT PIXELS FOR PHASE-DOMINANT SPATIAL LIGHT MODULATORS SO APPLIED OPTICS LA English DT Article ID REFLECTION MODULATOR; ABSORPTION-EDGE; BLUE SHIFT; QUANTUM; SUPERLATTICES AB A theoretical analysis of phase enhancement by resonant Fabry-Perot picture elements in III-V semiconductor spatial light modulators (SLM's) is presented. For 90% reflecting electrodes, a phase modulation of 0.7-pi rad is found in transmission when the electro-optic input phase is 0.06-pi rad. Implementation of this resonant phase-dominant SLM in a 1.5-mu-m-thick AlGaAs/GaAs multiple quantum well (MQW) structure is proposed. Field effects and carrier-induced electro-optic effects are suggested for the MQW's. RP SOREF, RA (reprint author), USAF,ROME LAB,RL ERO,BEDFORD,MA 01731, USA. RI Bennett, Brian/A-8850-2008 OI Bennett, Brian/0000-0002-2437-4213 NR 15 TC 0 Z9 0 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 FEB 10 PY 1992 VL 31 IS 5 BP 675 EP 680 PG 6 WC Optics SC Optics GA HC500 UT WOS:A1992HC50000015 PM 20720665 ER PT J AU LO, I MITCHEL, WC MANASREH, MO STUTZ, CE EVANS, KR AF LO, I MITCHEL, WC MANASREH, MO STUTZ, CE EVANS, KR TI NEGATIVE PERSISTENT PHOTOCONDUCTIVITY IN THE AL0.6GA0.4SB/INAS QUANTUM-WELLS SO APPLIED PHYSICS LETTERS LA English DT Article ID ELECTRON CONCENTRATIONS; HETEROSTRUCTURES; SCATTERING; TRANSPORT; TIME AB We have measured the Shubnikov-de Haas (SdH) effect in the Al0.6Ga0.4Sb/InAs quantum wells under the negative persistent photoconductivity (NPPC) conductions. By illuminating the sample at low-temperature, the carrier concentration of the two-dimensional electron gas in the InAs well was reduced from 5.8 to 3.6 X 10(11) cm-2 and the corresponding quantum lifetime increases from 0.16 to 0.21 ps. The electrons which escaped from the InAs well were captured by the ionized deep donors in the Al0.6Ga0.4Sb layers. The effective mass is equal to (0.0317 +/- 0.0005)m0. We also propose, based on the SdH data, that the illumination of the sample with the ionized deep donors at low temperature will exhibit the NPPC effect. C1 WRIGHT LAB,ELRA,WRIGHT PATTERSON AFB,OH 45433. RP LO, I (reprint author), WRIGHT LAB,MLPO,WRIGHT PATTERSON AFB,OH 45433, USA. NR 18 TC 42 Z9 42 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 FEB 10 PY 1992 VL 60 IS 6 BP 751 EP 753 DI 10.1063/1.106558 PG 3 WC Physics, Applied SC Physics GA HC820 UT WOS:A1992HC82000030 ER PT J AU GINET, GP SIMON, GW AF GINET, GP SIMON, GW TI ON THE EVIDENCE FOR MESOGRANULES IN SOLAR POWER SPECTRA SO ASTROPHYSICAL JOURNAL LA English DT Article DE CONVECTION; SUN, GRANULATION ID GRANULATION; SURFACE; FIELD AB The power spectrum of the horizontal component of the solar convective velocity field has recently been estimated from observations of the Doppler shifts of surface flows at and near disk center (Chou et al.). From their analysis, the authors assert that "there is no evidence of apparent energy excess at the scale of mesogranulation." We show in this paper that their conclusion is incorrect and that the shape of the observational spectrum does indeed confirm the presence of both supergranules and mesogranules in the solar convective flow. To establish this claim we have extended existing kinematic models of convection at the solar surface (Simon and Weiss; Simon et al.) and have introduced power spectra diagnostics. We find that models with supergranule cells alone do not produce spectra that match the observations, but if mesogranules are included then there is excellent agreement between the model and observational spectra when the model parameters are chosen to be consistent with proper motion and Doppler measurements. Since the magnitudes of our model spectra are consistent with earlier Doppler measurements of the rms horizontal velocity field, but are significantly less than those of the observed spectrum, we must call into question the analysis of Chou et al. C1 NATL SOLAR OBSERV,PHILLIPS LAB,SUNSPOT,NM 88349. RP GINET, GP (reprint author), USAF,PHILLIPS LAB AFSC,GP PHG,BEDFORD,MA 01731, USA. NR 15 TC 11 Z9 11 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 FEB 10 PY 1992 VL 386 IS 1 BP 359 EP 363 DI 10.1086/171022 PN 1 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA HC501 UT WOS:A1992HC50100038 ER PT J AU ST MAURICE, M AF ST MAURICE, M TI LASER VELOCIMETRY SEED PARTICLES WITHIN COMPRESSIBLE, VORTICAL FLOWS SO AIAA JOURNAL LA English DT Article AB The ability of seed particles to penetrate and accurately track vortices is of critical importance to the analysis of laser velocimetry (LV) measurements within these flow structures. In applying a particle equation of motion to vortical flowfield which extend into the supersonic, compressible regime, two approaches are considered. First, an ideal, potential vortex is developed for a compressible flowfield. As an aid to the design and analysis of vortical flowfield surveys over a wide range of independent parameters, this model is used to plot the time and position at which any particle starting at rest within a vortex will begin to track the flow velocity within 3% error. As a specific application, the potential vortex is then used to estimate the dynamic bias of LV measurements taken within a vortex shed from a 75-deg delta wing at 20 deg angle of attack in a Mach 1.9 supersonic flow. The second approach uses a computationally derived Navier-Stokes flowfield solution in place of the potential vortex model. The computational flowfield method predicts that accurate LV measurements within the delta wing flowfield require seed particles no larger than 0.1-0.2-mu-m in diameter, and defines the unseeded inner vortex core region. Both approaches show an increase in velocity bias which is nearly proportional to particle diameter, stressing the need for a monodisperse seed of known size to resolve particle bias in complex flows. RP ST MAURICE, M (reprint author), WRIGHT LAB, WRIGHT PATTERSON AFB, OH 45433 USA. NR 11 TC 8 Z9 8 U1 0 U2 0 PU AMER INST AERONAUTICS ASTRONAUTICS PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA SN 0001-1452 EI 1533-385X J9 AIAA J JI AIAA J. PD FEB PY 1992 VL 30 IS 2 BP 376 EP 383 DI 10.2514/3.10928 PG 8 WC Engineering, Aerospace SC Engineering GA HE967 UT WOS:A1992HE96700013 ER PT J AU MANUSOV, EG JOHNSON, R AF MANUSOV, EG JOHNSON, R TI OROFACIAL PAIN - DIAGNOSIS AND TREATMENT SO AMERICAN FAMILY PHYSICIAN LA English DT Article AB Orofacial pain can have an inflammatory, neurologic or musculoskeletal cause. Inflammatory diseases include dental abscess, sinusitis, temporal arteritis, sialolithiasis and infections of the parotid gland. Common neurologic diseases that cause facial pain are trigeminal neuralgia, glossopharyngeal neuralgia, paratrigeminal neuralgia and cluster headaches. Musculoskeletal causes include temporomandibular joint syndrome and myofascial pain dysfunction syndrome. A clear understanding of pertinent anatomy and an organized approach to diagnosis will facilitate the evaluation of patients with orofacial pain. RP MANUSOV, EG (reprint author), USAF,MED CTR,SCOTT AFB,IL 62225, USA. NR 0 TC 1 Z9 4 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 FEB PY 1992 VL 45 IS 2 BP 773 EP 782 PG 10 WC Primary Health Care; Medicine, General & Internal SC General & Internal Medicine GA HC805 UT WOS:A1992HC80500033 PM 1739060 ER PT J AU HINKES, MJ AF HINKES, MJ TI MORTAL REMAINS - A TRUE STORY OF RITUAL MURDER - SCAMMELL,H SO AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY LA English DT Book Review RP HINKES, MJ (reprint author), USA,CENT IDENTIFICAT LAB,FT KAMEHAMEHA,BLDG 45,HICKAM AFB,HI, USA. NR 1 TC 0 Z9 0 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 0002-9483 J9 AM J PHYS ANTHROPOL JI Am. J. Phys. Anthropol. PD FEB PY 1992 VL 87 IS 2 BP 237 EP 238 DI 10.1002/ajpa.1330870212 PG 2 WC Anthropology; Evolutionary Biology SC Anthropology; Evolutionary Biology GA HA023 UT WOS:A1992HA02300011 ER PT J AU MORENO, RJ WEISMAN, J WALLER, S AF MORENO, RJ WEISMAN, J WALLER, S TI NEURORETINITIS - AN UNUSUAL PRESENTATION OF OCULAR TOXOPLASMOSIS SO ANNALS OF OPHTHALMOLOGY LA English DT Article ID NEOVASCULARIZATION AB Neuroretinitis is a clinical condition usually seen in young healthy adults that is characterized by rapid profound unilateral loss of vision. Funduscopic findings include swollen disc, splinter hemorrhages, and macular star. Cat-scratch fever and leptospirosis have been suggested as possible etiologies in this condition. We report a case of a patient with neuroretinitis whose only laboratory abnormality was an elevated enzyme-linked immunosorbent assay immunoglobulin G Toxoplasma titer. The patient responded favorably to treatment with clindamycin, triple sulfa, and systemic corticosteroids. We recommend toxoplasmic serology be added to the workup of patients with neuroretinitis. RP MORENO, RJ (reprint author), WILFORD HALL USAF MED CTR,SGHSE,DEPT OPHTHALMOL,LACKLAND AFB,TX 78236, USA. NR 8 TC 20 Z9 21 U1 0 U2 0 PU AMER SOC CONTEMPORARY OPHTHALMOLOGY PI SKOKIE PA 4711 GOLF RD, SUITE 408, SKOKIE, IL 60076-1242 SN 0003-4886 J9 ANN OPHTHALMOL JI Ann. Ophthalmol. PD FEB PY 1992 VL 24 IS 2 BP 68 EP 70 PG 3 WC Ophthalmology SC Ophthalmology GA HE619 UT WOS:A1992HE61900006 PM 1562128 ER PT J AU DENNIS, RJ GREEN, RP KETCHUM, NS AF DENNIS, RJ GREEN, RP KETCHUM, NS TI THE MEDICAL ACCEPTABILITY OF SOFT CONTACT-LENS WEAR BY USAF TACTICAL AIRCREWS SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article AB Seventy-two Tactical Air Command (TAC) aircrew members completed one full year of soft contact lens (SCL) wear. A daily-wear regimen, using extended-wear lenses, was used to minimize corneal stress. Baseline measurements of visual acuity with SCLs and with spectacles after SCL removal and ocular indicator gradings were compared to measurements at 5-d, 10-d, 1-month, 3-month, 6-month, and 12-month examinations. Visual acuity did not decrease during the test. No aircrew member developed corneal ulcers or other serious complications requiring elimination from the test. Two aircrew members lost a total of 9 "duties not to include flying" (DNIF) days: one flyer was grounded for 1 d with a corneal abrasion and another for 8 d with epithelial microcysts. The TAC SCL Test, as designed, was generally successful. The conservative approach to SCL wear during the test and the meticulous follow-up care by United States Air Force eye care professionals most likely contributed to the low ocular complication rate. RP DENNIS, RJ (reprint author), ARMSTRONG LAB,DIV CLIN SCI,AEROSP VIS LAB,OPHTHALMOL BRANCH,BROOKS AFB,TX 78235, USA. NR 14 TC 7 Z9 8 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 FEB PY 1992 VL 63 IS 2 BP 122 EP 127 PG 6 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA HC248 UT WOS:A1992HC24800005 PM 1546940 ER PT J AU BRUCKART, JE AF BRUCKART, JE TI PEACETIME UNITED-STATES-ARMY AIRCREW RESCUE AND FACTORS DELAYING RESCUE SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Note AB Despite strict flight discipline, U.S. Army aircraft infrequently suffer inflight mishaps. This is a retrospective study of aircrew survival and rescue in 97 mishaps investigated by the U.S. Army Safety Center from October 1988 to June 1990. To identify factors delaying rescue, recent mishaps are compared with 37 mishaps where the time to reach the mishap site exceeded 2 h. The average time to reach a mishap site was 2.2 h, but over 90% were reached within 2 h. There were two or more survivors at 82% of the sites and 98% of the downed aircrew had at least personal survival equipment available. Adverse operational and environmental factors were more common in delayed rescue mishaps. Sudden aircraft failure was three times more common in prolonged rescue mishaps, while night or instrument meteorologic conditions contributed eight times and four times greater risk of delay, respectively. Rescues in mountainous terrain or overwater were seven times more likely to be delayed. While fatalities were more common with prolonged rescue, there were no mishaps where a delay in reaching the crash site resulted in the loss of an airman. C1 USAF,SCH AEROSP MED,BROOKS AFB,TX 78235. NR 5 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 FEB PY 1992 VL 63 IS 2 BP 132 EP 134 PG 3 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA HC248 UT WOS:A1992HC24800007 PM 1546942 ER PT J AU HART, KR AF HART, KR TI UNITED-STATES AIR-FORCE SCHOOL OF AEROSPACE-MEDICINE - THE NEW MISSION SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Note AB This paper discusses the reorganization of the U.S. Air Force School of Aerospace Medicine And the Armstrong Laboratory and considers the future of aerospace medical education in the USAF. RP HART, KR (reprint author), USAF,SCH AEROSP MED,BROOKS AFB,TX 78235, USA. NR 1 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 FEB PY 1992 VL 63 IS 2 BP 145 EP 146 PG 2 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA HC248 UT WOS:A1992HC24800010 PM 1546945 ER PT J AU SHERRY, CJ CONSTABLE, SH AF SHERRY, CJ CONSTABLE, SH TI AN AUTOMATED EXERCISE WHEEL FOR PRIMATES SO BEHAVIOR RESEARCH METHODS INSTRUMENTS & COMPUTERS LA English DT Article AB Both adult and juvenile nonhuman primates can be unpredicatable, difficult to handle, and potentially dangerous. Accordingly, in evaluating their activity level, they must be carefully confined. We have modified and redesigned and exercise system for primates. The exercise wheel was originally described by Curran, Wiegel, and Stevens (1972) and later adapted by Elizondo (1989). Our modifications and training procedures, which allowed us to bring the behavior of the monkey under stimulus control within 4 weeks, are described here. C1 ARMSTRONG LAB,AL CFTO,BROOKS AFB,TX 78235. NR 8 TC 3 Z9 3 U1 0 U2 2 PU PSYCHONOMIC SOC INC PI AUSTIN PA 1710 FORTVIEW RD, AUSTIN, TX 78704 SN 0743-3808 J9 BEHAV RES METH INSTR JI Behav. Res. Methods Instr. Comput. PD FEB PY 1992 VL 24 IS 1 BP 49 EP 53 DI 10.3758/BF03203469 PG 5 WC Psychology, Mathematical; Psychology, Experimental SC Psychology GA HH569 UT WOS:A1992HH56900007 ER PT J AU JOHNSTON, CT TIPTON, T TRABUE, SL ERICKSON, C STONE, DA AF JOHNSTON, CT TIPTON, T TRABUE, SL ERICKSON, C STONE, DA TI VAPOR-PHASE SORPTION OF P-XYLENE ON CO-EXCHANGED AND CU-EXCHANGED SAZ-1 MONTMORILLONITE SO ENVIRONMENTAL SCIENCE & TECHNOLOGY LA English DT Article ID RESONANCE RAMAN-SPECTROSCOPY; COPPER(II)-ARENE COMPLEXES; AROMATIC-MOLECULES; MINERAL SURFACES; BENZENE; ADSORPTION; INTERLAYER; SPECTRA; CATIONS; WATER AB Sorption of p-xylene and water on homoionic Cu- and Co-exchanged montmorillonite clay films has been investigated using a gravimetric/Fourier transform infrared (FT-IR) cell along with a tandem UV-visible/FT-IR cell. The gravimetric/FT-IR cell provided an unambiguous method to determine the relative contributions of water and p-xylene to the total mass of solute sorbed by the clay. The spectroscopic data indicated that p-xylene was chemisorbed on the surface of Cu-montmorillonite under dry conditions. An intense band developed at 455 nm in the UV-visible spectrum and new bands appeared in the FT-IR spectrum which could not be assigned to p-xylene or to the clay matrix. These new bands are assigned to the formation of a radical organic cation of p-xylene resulting from a single-electron-transfer reaction on the surface of the clay. No spectroscopic evidence for chemisorption of p-xylene on Co-montmorillonite was found. C1 HQ AFESC,RDVC,TYNDALL AFB,FL 32403. RP JOHNSTON, CT (reprint author), UNIV FLORIDA,DEPT SOIL SCI,GAINESVILLE,FL 32611, USA. RI Johnston, Cliff/B-2215-2009 OI Johnston, Cliff/0000-0002-8462-9724 NR 41 TC 15 Z9 15 U1 1 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0013-936X J9 ENVIRON SCI TECHNOL JI Environ. Sci. Technol. PD FEB PY 1992 VL 26 IS 2 BP 382 EP 390 DI 10.1021/es00026a021 PG 9 WC Engineering, Environmental; Environmental Sciences SC Engineering; Environmental Sciences & Ecology GA HB871 UT WOS:A1992HB87100028 ER PT J AU KLAUENBERG, BJ MERRITT, JH AF KLAUENBERG, BJ MERRITT, JH TI INTUITIVE DATA-ANALYSIS IS NOT THE SCIENTIFIC METHOD SO HEALTH PHYSICS LA English DT Letter RP KLAUENBERG, BJ (reprint author), ARMSTRONG LAB, DIV DIRECTED ENERGY, BROOKS AFB, TX 78235 USA. NR 3 TC 0 Z9 0 U1 0 U2 0 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 FEB PY 1992 VL 62 IS 2 BP 195 EP 196 PG 2 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 HA640 UT WOS:A1992HA64000014 ER PT J AU BERG, LC COPENHAVER, CM MORRISON, VA GRUBER, SA DUNN, DL GAJLPECZALSKA, K STRICKLER, JG AF BERG, LC COPENHAVER, CM MORRISON, VA GRUBER, SA DUNN, DL GAJLPECZALSKA, K STRICKLER, JG TI B-CELL LYMPHOPROLIFERATIVE DISORDERS IN SOLID-ORGAN TRANSPLANT PATIENTS - DETECTION OF EPSTEIN-BARR-VIRUS BY INSITU HYBRIDIZATION SO HUMAN PATHOLOGY LA English DT Article DE EPSTEIN-BARR VIRUS; INSITU HYBRIDIZATION; POSTTRANSPLANTATION LYMPHOPROLIFERATIVE DISORDER ID BONE-MARROW TRANSPLANTATION; RENAL-TRANSPLANTATION; CLONAL ANALYSIS; RECIPIENTS; LYMPHOMAS; THERAPY; EXPRESSION; INFECTION; DISEASES; LESIONS C1 UNIV MINNESOTA,DEPT PATHOL,MINNEAPOLIS,MN 55455. UNIV MINNESOTA,DEPT MED,MINNEAPOLIS,MN 55455. UNIV MINNESOTA,DEPT SURG,MINNEAPOLIS,MN 55455. WILFORD HALL USAF MED CTR,DEPT PATHOL,LACKLAND AFB,TX 78236. FU NIADDK NIH HHS [AM 13083] NR 29 TC 37 Z9 37 U1 0 U2 0 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0046-8177 J9 HUM PATHOL JI Hum. Pathol. PD FEB PY 1992 VL 23 IS 2 BP 159 EP 163 DI 10.1016/0046-8177(92)90237-W PG 5 WC Pathology SC Pathology GA HG316 UT WOS:A1992HG31600011 PM 1310951 ER PT J AU MORAN, CA MULLICK, FG ISHAK, KG JOHNSON, FB AF MORAN, CA MULLICK, FG ISHAK, KG JOHNSON, FB TI IDENTIFICATION OF TITANIUM IN HUMAN TISSUES - REPLY SO HUMAN PATHOLOGY LA English DT Letter RP MORAN, CA (reprint author), USAF,WASHINGTON,DC 20330, USA. NR 3 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 0046-8177 J9 HUM PATHOL JI Hum. Pathol. PD FEB PY 1992 VL 23 IS 2 BP 205 EP 205 DI 10.1016/0046-8177(92)90249-3 PG 1 WC Pathology SC Pathology GA HG316 UT WOS:A1992HG31600023 ER PT J AU MORAN, CA MULLICK, FG ISHAK, KG JOHNSON, FB AF MORAN, CA MULLICK, FG ISHAK, KG JOHNSON, FB TI IDENTIFICATION OF TITANIUM IN HUMAN TISSUES - REPLY SO HUMAN PATHOLOGY LA English DT Letter RP MORAN, CA (reprint author), USAF,WASHINGTON,DC 20330, 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 0046-8177 J9 HUM PATHOL JI Hum. Pathol. PD FEB PY 1992 VL 23 IS 2 BP 206 EP 206 DI 10.1016/0046-8177(92)90251-W PG 1 WC Pathology SC Pathology GA HG316 UT WOS:A1992HG31600025 ER PT J AU HELLWIG, H AF HELLWIG, H TI DIFFERENCES IN COMPETITIVE STRATEGIES BETWEEN THE UNITED-STATES AND JAPAN SO IEEE TRANSACTIONS ON ENGINEERING MANAGEMENT LA English DT Note RP HELLWIG, H (reprint author), USAF,OFF SCI RES,CC,BOLLING AFB,WASHINGTON,DC 20332, USA. NR 4 TC 1 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 0018-9391 J9 IEEE T ENG MANAGE JI IEEE Trans. Eng. Manage. PD FEB PY 1992 VL 39 IS 1 BP 77 EP 78 DI 10.1109/17.119665 PG 2 WC Business; Engineering, Industrial; Management SC Business & Economics; Engineering GA HE801 UT WOS:A1992HE80100008 ER PT J AU SINGH, SP WILSON, JH COUNCE, RM VILLIERSFISHER, JF JENNINGS, HL LUCERO, AJ REED, GD ASHWORTH, RA ELLIOTT, MG AF SINGH, SP WILSON, JH COUNCE, RM VILLIERSFISHER, JF JENNINGS, HL LUCERO, AJ REED, GD ASHWORTH, RA ELLIOTT, MG TI REMOVAL OF VOLATILE ORGANIC-COMPOUNDS FROM GROUNDWATER USING A ROTARY AIR STRIPPER SO INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH LA English DT Article AB The performance of a centrifugal vapor-liquid contactor was evaluated for air stripping of jet fuel components from groundwater. Hydraulic test data indicated that the Sherwood flooding correlation, which has been proposed for use in designing centrifugal vapor-liquid contactors, overestimates the rotational speeds at which flooding occurs. A concept of the area of a transfer unit (ATU) was introduced in the mass-transfer tests to account for the change in fluid loading with the radius of the packing torus. A new correlation based on the specific surface area of the packing for predicting ATU described the experimental data with a fair degree of accuracy. The power consumed in rotating the packing torus was found to depend mainly on the liquid flow, outer rotor radius, and rotational speed. Previous claims in the literature that the centrifugal vapor-liquid contactor is resistant to fouling because of high shear forces were not found to be valid for groundwater with high iron content. C1 USAF,TYNDALL AFB,FL 32403. OAK RIDGE NATL LAB,DIV CHEM TECHNOL,OAK RIDGE,TN 37831. UNIV TENNESSEE,DEPT CHEM ENGN,KNOXVILLE,TN 37996. UNIV TENNESSEE,DEPT CIVIL ENGN,KNOXVILLE,TN 37996. RP SINGH, SP (reprint author), OAK RIDGE NATL LAB,DIV ROBOT & PROC SYST,POB 2008,BLDG 7601,MS-6306,OAK RIDGE,TN 37831, USA. NR 14 TC 94 Z9 97 U1 0 U2 12 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0888-5885 J9 IND ENG CHEM RES JI Ind. Eng. Chem. Res. PD FEB PY 1992 VL 31 IS 2 BP 574 EP 580 DI 10.1021/ie00002a019 PG 7 WC Engineering, Chemical SC Engineering GA HC653 UT WOS:A1992HC65300019 ER PT J AU ZUCLICH, JA GLICKMAN, RD MENENDEZ, AR AF ZUCLICH, JA GLICKMAN, RD MENENDEZ, AR TI INSITU MEASUREMENTS OF LENS FLUORESCENCE AND ITS INTERFERENCE WITH VISUAL FUNCTION SO INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE LA English DT Article DE FLUORESCENCE; GLARE; LASER; LENS; VISUAL EVOKED POTENTIAL (VEP) ID CRYSTALLINE LENS; RADIATION; FILTER; VISION; DAMAGE AB Irradiation of the primate lens by near-ultraviolet wavelengths results in a blue fluorescence, which can be an intraocular source of veiling glare. This study quantitated the fluorescence intensity as a function of exciting intensity and wavelength. As the exciting wavelength was increased from 360 to 430 nm, the decreasing fluorescence intensity (for equal radiant exposures) was partially offset by a shift in the fluorescence spectrum to wavelengths of greater luminous efficiency so the luminance of the lens fluorescence remained approximately constant. The measured luminance of the lens fluorescence was high enough to imply degradation of visual function as a result of reduced contrast of the retinal image. To obtain an objective measure of visual deficit associated with the fluorescent glare, the visual evoked potential (VEP) elicited by counterphased sine-wave gratings was recorded while the subject eye was continuously exposed to the 413 nm emission from a krypton laser. The VEP amplitude was reduced in the presence of the exciting laser even at levels defined as "safe" (ie, where exposure levels are insufficient to induce an acute ocular lesion). Because the direct glare effect of the exciting radiation was negligible in this experiment, the VEP response loss is attributed to the effect of the lens fluorescent glare. C1 UNIV TEXAS,HLTH SCI CTR,DEPT OPHTHALMOL,SAN ANTONIO,TX 78284. USAF,ARMSTRONG LAB,OCCUPAT & ENVIRONM HLTH DIRECTORATE,BROOKS AFB,TX 78235. RP ZUCLICH, JA (reprint author), KRUG LIFE SCI INC,SAN ANTONIO DIV,POB 790644,SAN ANTONIO,TX 78279, USA. NR 20 TC 11 Z9 11 U1 0 U2 1 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 FEB PY 1992 VL 33 IS 2 BP 410 EP 415 PG 6 WC Ophthalmology SC Ophthalmology GA HE030 UT WOS:A1992HE03000021 PM 1740373 ER PT J AU REID, MJ NISH, WA WHISMAN, BA GOETZ, DW HYLANDER, RD PARKER, WA FREEMAN, TM AF REID, MJ NISH, WA WHISMAN, BA GOETZ, DW HYLANDER, RD PARKER, WA FREEMAN, TM TI HLA-DR4-ASSOCIATED NONRESPONSIVENESS TO MOUNTAIN-CEDAR ALLERGEN SO JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY LA English DT Article DE MOUNTAIN-CEDAR POLLENOSIS; HLA-ASSOCIATED PROTECTION; HLA-DR4 ID MAJOR HISTOCOMPATIBILITY COMPLEX; HUMAN IMMUNE-RESPONSE; HLA-D REGION; CROSS-REACTIVITY; GENETIC-MARKER; T-CELL; POLLEN; IMMUNOTHERAPY; SEQUENCE; HLA-DW2 AB We did human lymphocyte antigen (HLA)-DR and DQ typing on 37 subjects with mountain-cedar (MC) pollinosis as defined by history and a positive skin test. Of these 37 subjects, 31 were subdivided into 18 subjects with a single positive skin test (SPST) and 13 subjects with multiple positive skin tests (MPSTs). We also typed 51 subjects without MC sensitivity or atopy as defined by history and negative skin tests to a battery of aeroallergens. We also typed 116 subjects in whom MC sensitivity had not been determined. Total IgE, MC-specific immunoglobulin E (sIgE), and MC-sIgE binding bands by immunoblot were also determined on the subjects with SPSTs and MPSTs. No significant differences were found between the subjects with SPSTs and MPSTs for HLA type, total IgE, MC sIgE, or bands bound by MC sIgE by immunoblot. There was a strong negative relationship between HLA-DR4 and subjects with MC pollinosis; chi-square, 14.857; p = 0.0096; and odds ratio, 0.139. These findings suggest that there is no difference in genetic immunoregulation between subjects with SPSTs and MPSTs but that the presence of the DR4 gene product is associated with a decreased risk of an IgE response to MC and protection from MC pollenosis. C1 WILFORD HALL USAF MED CTR,DIV MED,ALLERGY IMMUNOL SERV,LACKLAND AFB,TX 78236. RP REID, MJ (reprint author), ALLERGY & IMMUNOL CLIN SAN FRANCISCO,220 MONTGOMERY ST,SUITE 577,SAN FRANCISCO,CA 94104, USA. NR 28 TC 44 Z9 44 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 FEB PY 1992 VL 89 IS 2 BP 593 EP 598 DI 10.1016/0091-6749(92)90327-X PG 6 WC Allergy; Immunology SC Allergy; Immunology GA HD753 UT WOS:A1992HD75300012 PM 1740588 ER PT J AU NEMZEK, RJ MALCOLM, PR WINCKLER, JR AF NEMZEK, RJ MALCOLM, PR WINCKLER, JR TI COMPARISON OF ECHO-7 FIELD LINE LENGTH MEASUREMENTS TO MAGNETOSPHERIC MODEL PREDICTIONS SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article; Proceedings Paper CT WORKSHOP ON PLASMASPHERE REFILLING CY OCT 15-16, 1990 CL UNIV ALABAMA, HUNTSVILLE, AL HO UNIV ALABAMA ID GEOMAGNETIC-FIELD; CONJUGATE ECHOES AB The Echo 7 sounding rocket experiment injected electron beams on central tail field lines near L - 6.5. Numerous injections returned to the payload as "conjugate echoes" after mirroring in the southern hemisphere. We compare field line lengths calculated from measured conjugate echo bounce times and energies to predictions made by integrating electron trajectories through various magnetospheric models: the Olson-Pfitzer Quiet and Dynamic models and the Tsyganenko-Usmanov model. Although Kp at launch was 3-, quiet time magnetic models best fit the echo measurements. Geosynchronous satellite magnetometer measurements near the Echo 7 field lines during the flight were best modelled by the Olson-Pfitzer Dynamic Model and the Tsyganenko-Usmanov model for Kp = 3. The discrepancy between the models that best fit the Echo 7 data and those that fit the satellite data was most likely due to uncertainties in the small-scale configuration of the magnetospheric models. The field line length measured by the conjugate echoes showed some temporal variation in the magnetic field, also indicated by the satellite magnetometers. This demonstrates the utility an Echo-style experiment could have in substorm studies. C1 UNIV MINNESOTA,SCH PHYS & ASTRON,MINNEAPOLIS,MN 55455. USAF ACAD,DEPT PHYS,COLORADO SPRINGS,CO 80840. NR 19 TC 6 Z9 6 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 FEB 1 PY 1992 VL 97 IS A2 BP 1279 EP 1287 DI 10.1029/91JA02658 PG 9 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA HB870 UT WOS:A1992HB87000018 ER PT J AU YOUNG, CD HAN, JC HUANG, Y RIVIR, RB AF YOUNG, CD HAN, JC HUANG, Y RIVIR, RB TI INFLUENCE OF JET-GRID TURBULENCE ON FLAT-PLATE TURBULENT BOUNDARY-LAYER FLOW AND HEAT-TRANSFER SO JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME LA English DT Article DE FORCED CONVECTION; TURBINES; TURBULENCE ID FREE-STREAM TURBULENCE; MEAN PROFILE DEVELOPMENT AB The influence of high mainstream turbulence on turbulent boundary layer flow and heat transfer is experimentally investigated for length Reynolds numbers between 4 x 10(4) and 1.5 x 10(6). The high mainstream turbulence is produced by a round tube grid with uniform jet injection. Injected air is blown in either an upwind or downwind direction at a controllable flow rate. A flat plate test section instrumented with foil thermocouples is located downstream from the jet grid. The turbulence intensity decay and length scale growth along the test plate, the mean velocity and temperature profiles across the boundary layer, and surface heat transfer distribution are measured. The results show that the grid with downwind injection produces a slightly higher turbulence intensity and a smaller length scale than the grid with upwind injection. A higher turbulence intensity and a smaller length scale further enhance the surface heat transfer coefficient. The jet-induced high turbulence does not alter the downstream velocity and temperature profiles in their logarithmic regions, but the wake regions are lower than the zero turbulence profiles. The Reynolds analogy factor, the augmented friction factor, and the augmented Stanton number are higher than those from existing correlations when the jet grid turbulence intensity is greater than 6 percent. C1 TEXAS A&M UNIV SYST,DEPT MECH ENGN,TURBINE HEAT TRANSFER LAB,COLLEGE STN,TX 77843. USAF,WRIGHT AERONAUT LABS,POTX,WRIGHT PATTERSON AFB,OH 45433. NR 18 TC 18 Z9 18 U1 0 U2 3 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 FEB PY 1992 VL 114 IS 1 BP 65 EP 72 DI 10.1115/1.2911269 PG 8 WC Thermodynamics; Engineering, Mechanical SC Thermodynamics; Engineering GA HP762 UT WOS:A1992HP76200009 ER PT J AU PAIS, MR CHOW, LC MAHEFKEY, ET AF PAIS, MR CHOW, LC MAHEFKEY, ET TI SURFACE-ROUGHNESS AND ITS EFFECTS ON THE HEAT-TRANSFER MECHANISM IN SPRAY COOLING SO JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME LA English DT Article DE BOILING; PHASE-CHANGE PHENOMENA; SPRAYS DROPLETS AB In the spray cooling of a heated surface, variations in the surface texture influence the flow field, altering the maximum liquid film thickness, the bubble diameter, vapor entrapment, bubble departure characteristics, and the ability to transfer heat. A new method for determining and designating the surface texture is proposed, and the effects of surface roughness on evaporation/nucleation in the spray cooling flow field studied. A one-dimensional Fourier analysis is applied to determine experimentally the surface profile of a surface polished with emery paper covering a spectrum of grit sizes between 0.3 to 22-mu-m. Heat transfer measurements for liquid flow rates between 1 to 5 l/h and air flow rates between 0.1 to 0.4 l/s are presented. Maximum heat fluxes of 1200 W/cm2 for the 0.3-mu-m surface at very low superheats were obtained. C1 WRIGHT RES & DEV CTR, AERO PROPULS & POWER LAB, WRIGHT PATTERSON AFB, OH 45433 USA. RP UNIV KENTUCKY, DEPT MECH ENGN, LEXINGTON, KY 40506 USA. NR 30 TC 93 Z9 105 U1 7 U2 20 PU ASME PI NEW YORK PA TWO PARK AVE, NEW YORK, NY 10016-5990 USA SN 0022-1481 EI 1528-8943 J9 J HEAT TRANS-T ASME JI J. Heat Transf.-Trans. ASME PD FEB PY 1992 VL 114 IS 1 BP 211 EP 219 DI 10.1115/1.2911248 PG 9 WC Thermodynamics; Engineering, Mechanical SC Thermodynamics; Engineering GA HP762 UT WOS:A1992HP76200028 ER PT J AU GERDTS, GJ MURCHISON, DF AF GERDTS, GJ MURCHISON, DF TI GLASS IONOMER SHADE SELECTION USING A PORCELAIN SHADE GUIDE SO JOURNAL OF PROSTHETIC DENTISTRY LA English DT Note C1 USAF,RHEIN MAIN AFB,GERMANY. INDIANA UNIV PENN,SCH DENT,DEPT DENT MAT,INDIANA,PA 15701. NR 0 TC 1 Z9 1 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 FEB PY 1992 VL 67 IS 2 BP 280 EP 281 DI 10.1016/0022-3913(92)90470-U PG 2 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA HB902 UT WOS:A1992HB90200028 PM 1538343 ER PT J AU KOLESAR, ES RESTON, RR FORD, DG FITCH, RC AF KOLESAR, ES RESTON, RR FORD, DG FITCH, RC TI MULTIPLEXED PIEZOELECTRIC POLYMER TACTILE SENSOR SO JOURNAL OF ROBOTIC SYSTEMS LA English DT Article ID ARRAY; TRANSDUCERS; SYSTEMS; FILMS; AIR AB An electrically multiplexed robotic tactile sensor has been realized using a monolithic silicon-integrated circuit coupled to a piezoelectric polyvinylidene fluoride (PVDF) film. The integrated circuit incorporates 25 sensor electrodes arranged in a symmetrical 5 x 5 matrix. Each electrode occupies a 600 X 600-mu-m square area, and they are separated from each other by 600-mu-m. A 25-mu-m thick PVDF film was experimentally determined to be compatible with the fabrication process, and also yielded very favorable tactile sensing performance characteristics. The response of the tactile sensor is essentially linear for loads spanning 0.8 to 60 g force (gmf). The response bandwidth is 33 Hz, the hysteresis level is very small, and crosstalk is not a significant problem. A novel precharge bias scheme has been implemented to stabilize the pre- and postload sensor response. A rudimentary tactile object image measurement process was evaluated to recognize the shapes of circular, rectangular, toroidal, and hexagonal loads. RP KOLESAR, ES (reprint author), USAF, DEPT ELECT & COMP ENGN, WRIGHT PATTERSON AFB, OH 45433 USA. NR 101 TC 22 Z9 22 U1 0 U2 3 PU JOHN WILEY & SONS INC PI HOBOKEN PA 111 RIVER ST, HOBOKEN, NJ 07030 USA SN 0741-2223 J9 J ROBOTIC SYST JI J. Robot. Syst. PD FEB PY 1992 VL 9 IS 1 BP 37 EP 63 DI 10.1002/rob.4620090104 PG 27 WC Robotics SC Robotics GA HA494 UT WOS:A1992HA49400003 ER PT J AU EASTMAN, AB SCHWAB, CW ANNEST, JL APRAHAMIAN, C BEACHLEY, M BROWNER, B BURLACK, P CHAMPION, H COOPER, G HEPPEL, D JACOBS, L MACKENZIE, EJ MAIER, R MARTINEZ, R MAULL, K MAYER, T MCHENRY, S REYNOLDS, S ROETTGER, R RYAN, S SHACKFORD, S TEPAS, J WILKINSON, H BURTON, N AF EASTMAN, AB SCHWAB, CW ANNEST, JL APRAHAMIAN, C BEACHLEY, M BROWNER, B BURLACK, P CHAMPION, H COOPER, G HEPPEL, D JACOBS, L MACKENZIE, EJ MAIER, R MARTINEZ, R MAULL, K MAYER, T MCHENRY, S REYNOLDS, S ROETTGER, R RYAN, S SHACKFORD, S TEPAS, J WILKINSON, H BURTON, N TI POSITION PAPER ON TRAUMA CARE SYSTEMS SO JOURNAL OF TRAUMA-INJURY INFECTION AND CRITICAL CARE LA English DT Article ID MORTALITY; REGIONALIZATION; IMPACT C1 UNIV FLORIDA,JACKSONVILLE,FL. HOSP UNIV PENN,PHILADELPHIA,PA 19104. UNIV WASHINGTON,HARBORVIEW MED CTR,SEATTLE,WA 98104. STANFORD UNIV,MED CTR,STANFORD,CA 94305. CTR DIS CONTROL,NATL CTR ENVIRONM HLTH & INJURY CONTROL,DIV INJURY CONTROL,ATLANTA,GA 30333. MED COLL WISCONSIN,MILWAUKEE,WI 53226. UNIV TENNESSEE,MED CTR,KNOXVILLE,TN 37996. SOC TRAUMA NURSES,FREDERICK,MD. UNIV TEXAS,SCH MED,HOUSTON,TX 77025. WASHINGTON HOSP CTR,WASHINGTON,DC 20010. FAIRFAX HOSP,FALLS CHURCH,VA 22046. EMERGENCY MED SERV,SAN DIEGO,CA. MATERNAL & CHILD HLTH BUR,ROCKVILLE,MD. HARTFORD HOSP,HARTFORD,CT 06115. JOHNS HOPKINS UNIV,CTR HLTH SERV RES & DEV,BALTIMORE,MD 21218. VIRGINIA DEPT HLTH,DIV EMERGENCY MED SERV,RICHMOND,VA. WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. NATL HIGHWAY TRAFF ADM,WASHINGTON,DC. UNIV VERMONT,COLL MED,BURLINGTON,VT 05405. UNIV MASSACHUSETTS,MED CTR,WORCESTER,MA 01605. RP EASTMAN, AB (reprint author), SCRIPPS CLIN & HOSP,LA JOLLA,CA 92037, USA. NR 20 TC 18 Z9 18 U1 0 U2 1 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 1079-6061 J9 J TRAUMA JI J. Trauma-Injury Infect. Crit. Care PD FEB PY 1992 VL 32 IS 2 BP 127 EP 129 DI 10.1097/00005373-199202000-00002 PG 3 WC Critical Care Medicine; Surgery SC General & Internal Medicine; Surgery GA HG196 UT WOS:A1992HG19600002 ER PT J AU JOHANNIGMAN, JA JOHNSON, DJ ROETTGER, R AF JOHANNIGMAN, JA JOHNSON, DJ ROETTGER, R TI THE EFFECT OF HYPOTHERMIA ON LIVER ADENOSINE-TRIPHOSPHATE (ATP) RECOVERY FOLLOWING COMBINED SHOCK AND ISCHEMIA SO JOURNAL OF TRAUMA-INJURY INFECTION AND CRITICAL CARE LA English DT Article ID HEMORRHAGIC-SHOCK; HEPATIC ISCHEMIA; RESUSCITATION; FAILURE; RAT AB During both hemorrhagic shock and ischemia, adenosine triphosphate (ATP) concentrations fall in liver tissue. Incomplete recovery of ATP levels were evaluated in paired groups of rats subjected to combined hemorrhagic shock and ischemia. A second set of paired animals was studied over time with shock alone. One animal in each pair was maintained at 28-degrees-C and the other at 37-degrees-C. Ischemia was produced by occluding inflow to the left half of the liver, and tissue was obtained from this area in all animals studied. Adenosine triphosphate levels fell in warm and cold animals subjected to both shock and 60 minutes of ischemia but recovered more completely during reperfusion in the cold animals. Shock alone caused a steady fall in ATP levels in the warm, but not the cold, rats. These biochemical changes may indicate a beneficial effect of moderate hypothermia in the management of severe liver hemorrhage requiring temporary occlusion of blood flow. C1 UNIV CINCINNATI,MED CTR,DEPT SURG,DIV TRAUMA & CRIT CARE,CINCINNATI,OH 45267. RP JOHANNIGMAN, JA (reprint author), WILFORD HALL USAF MED CTR,DEPT SURG,SGHSG,LACKLAND AFB,TX 78236, USA. NR 24 TC 20 Z9 20 U1 0 U2 0 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 1079-6061 J9 J TRAUMA JI J. Trauma-Injury Infect. Crit. Care PD FEB PY 1992 VL 32 IS 2 BP 190 EP 195 DI 10.1097/00005373-199202000-00014 PG 6 WC Critical Care Medicine; Surgery SC General & Internal Medicine; Surgery GA HG196 UT WOS:A1992HG19600014 PM 1740801 ER PT J AU MIKKELSEN, SL BOTTNER, RK PAOLI, C AF MIKKELSEN, SL BOTTNER, RK PAOLI, C TI SELENIUM AND OTHER PLASMA ELEMENT CONCENTRATIONS IN CORONARY HEART-DISEASE SO LABORATORY MEDICINE LA English DT Article AB A prospective epidemiological study of 114 patients undergoing cardiac catheterization and angioplasty for chest pain was undertaken to examine the relationship between six plasma metal concentrations and coronary heart disease (CHD). The plasma concentrations of selenium, magnesium, potassium, copper, zinc, and iron in patients with and without CHD were determined by atomic absorption spectrometry or by wet chemistry. The plasma element concentrations were then reviewed for any correlation with CHD. We observed a significant, inverse relationship between plasma selenium concentration and CHD. Although the mean plasma concentrations of potassium, magnesium, copper, iron, and zinc were lower in the patients with CHD, no significant correlation could be determined. If plasma selenium levels are monitored and dietary supplements to selenium-deficient patients are administered, the potential risk of CHD may be diminished. RP MIKKELSEN, SL (reprint author), USAF,MED CTR,SGHLCC,LACKLAND AFB,TX 78236, USA. NR 0 TC 4 Z9 4 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 FEB PY 1992 VL 23 IS 2 BP 122 EP 124 PG 3 WC Medical Laboratory Technology SC Medical Laboratory Technology GA HA279 UT WOS:A1992HA27900009 ER PT J AU REVELOS, WC SMITH, PR AF REVELOS, WC SMITH, PR TI EFFECT OF ENVIRONMENT ON THE THERMAL FATIGUE RESPONSE OF AN SCS-6 TI-24AL-11NB COMPOSITE SO METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE LA English DT Article ID ALUMINIDE AB A study has been conducted examining the thermal fatigue characteristics of an alpha-2/SiC composite; in particular, SCS-6 reinforced Ti-24Al-11Nb (at. pct). The effort included the investigation of the effect of the environment by cycling coated and uncoated specimens in air and in an inert environment. Damage assessment was determined by postcycling room-temperature tension testing as well as by microstructural examination, including both optical microscopy and scanning electron microscopy (SEM). Significant reductions in postcycling tensile strength were observed for coated and uncoated specimens thermally cycled in air from 150-degrees-C to 815-degrees-C for 500 cycles, while no measurable loss of strength was found for specimens cycled in a low-pressure inert environment under otherwise identical conditions. The synergistic effect of residual stresses due to a coefficient of thermal expansion (CTE) mismatch and environment on the degradation of tensile properties of the thermally cycled composite is found to be the critical damage evolution mechanism for both coated and uncoated composites cycled in air. Residual stresses alone were found not to be critical in creating damage that could be tracked by a loss in residual strength. RP REVELOS, WC (reprint author), WRIGHT LAB,MAT DIRECTORATE,DIV MET & CERAM,MAT BEHAV & PROC BRANCH,WRIGHT PATTERSON AFB,OH 45433, USA. NR 11 TC 37 Z9 37 U1 0 U2 1 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 0360-2133 J9 METALL TRANS A PD FEB PY 1992 VL 23 IS 2 BP 587 EP 595 DI 10.1007/BF02801176 PG 9 WC Materials Science, Multidisciplinary SC Materials Science GA HD764 UT WOS:A1992HD76400020 ER PT J AU THIEM, TL LEE, YI SNEDDON, J AF THIEM, TL LEE, YI SNEDDON, J TI LASERS IN ATOMIC SPECTROSCOPY - SELECTED APPLICATIONS SO MICROCHEMICAL JOURNAL LA English DT Review ID INDUCTIVELY COUPLED PLASMA; ENHANCED IONIZATION SPECTROMETRY; INDUCED-BREAKDOWN SPECTROSCOPY; SPATIALLY RESOLVED FLUORESCENCE; CONTROLLED-ATMOSPHERE TIME; TRACE-ELEMENT ANALYSIS; AIR ACETYLENE FLAME; MASS-SPECTROMETRY; GLOW-DISCHARGE; ABSORPTION SPECTROMETRY C1 UNIV MASSACHUSETTS, DEPT CHEM, LOWELL, MA 01854 USA. RP USAF, PHILLIPS LAB, SPACECRAFT INTERACT BRANCH, BEDFORD, MA 01731 USA. NR 207 TC 25 Z9 26 U1 0 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0026-265X EI 1095-9149 J9 MICROCHEM J JI Microchem J. PD FEB PY 1992 VL 45 IS 1 BP 1 EP 35 DI 10.1016/0026-265X(92)90067-D PG 35 WC Chemistry, Analytical SC Chemistry GA HC529 UT WOS:A1992HC52900001 ER PT J AU ROMAKER, H DANISZEWSKI, E AF ROMAKER, H DANISZEWSKI, E TI AIR-FORCE VACUUM ELECTRONICS RELIABILITY AND MAINTAINABILITY SO MICROWAVE JOURNAL LA English DT Article C1 ROME LAB,GRIFFISS AFB,NY. UNIV CALIF LOS ANGELES,ADV THERMION RES INITIAT,LOS ANGELES,CA 90024. RP ROMAKER, H (reprint author), WRIGHT LAB,SOLID STATE ELECTR DIRECTORATE,MICROWAVE DEVICES BRANCH,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 1 Z9 1 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 FEB PY 1992 VL 35 IS 2 BP 79 EP & PG 0 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA HE835 UT WOS:A1992HE83500004 ER PT J AU RUDGE, FW AF RUDGE, FW TI MECKEL STONE ILEUS SO MILITARY MEDICINE LA English DT Article AB Meckel's diverticulum is the most common congenital abnormality of the small bowel; it occurs in approximately 2 % of the population. Complications of Meckel's diverticulum include hemorrhage, usually associated with heterotopic tissue within the diverticulum, intussusception, development of benign or malignant neoplasms, and inflammation. Formation of one or more enteroliths within a diverticulum is rare. An extremely rare complication is mechanical small bowel obstruction secondary to extrusion of an enterolith from a Meckel's diverticulum (Meckel's stone ileus). A case of Meckel's stone ileus is described herein, with a review of the literature of this extremely rare complication. RP RUDGE, FW (reprint author), ARMSTRONG LAB,DIV HYPERBAR MED,BROOKS AFB,TX 78235, USA. NR 0 TC 6 Z9 7 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 FEB PY 1992 VL 157 IS 2 BP 98 EP 100 PG 3 WC Medicine, General & Internal SC General & Internal Medicine GA HC531 UT WOS:A1992HC53100016 PM 1603394 ER PT J AU VERONIN, CP PRIDDY, KL ROGERS, SK AYER, KW KABRISKY, M WELSH, B AF VERONIN, CP PRIDDY, KL ROGERS, SK AYER, KW KABRISKY, M WELSH, B TI OPTICAL-IMAGE SEGMENTATION USING NEURAL-BASED WAVELET FILTERING TECHNIQUES SO OPTICAL ENGINEERING LA English DT Article DE GABOR TRANSFORMS; IMAGE SEGMENTATION; OPTICAL NEURAL NETWORKS; TEXTURE DISCRIMINATION; IMAGE PROCESSING; FORWARD-LOOKING INFRARED IMAGES; OPTICAL PATTERN RECOGNITION ID LIQUID-CRYSTAL TELEVISION; JOINT TRANSFORM CORRELATOR; TV; MODULATOR; TRACKING AB A neural-based optical image segmentation scheme for locating potential targets in cluttered FLIR images is presented. The advantage of such a scheme is speed, i.e., the speed of light. Such a design is critical to achieve real-time segmentation and classification for machine vision applications. The segmentation scheme used was based on texture discrimination and employed biologically based orientation specific filters (wavelet filters) as its main component. These filters are the well-understood impulse response functions of mammalian vision systems from input to striate cortex. By using the proper choice of aperture pair separation, dilation, and orientation, targets in FLIR imagery were optically segmented. Wavelet filtering is illustrated for glass template slides, as well as segmentation for static and real-time FLIR imagery displayed on a liquid crystal television. RP VERONIN, CP (reprint author), USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,BOX 4444,WRIGHT PATTERSON AFB,OH 45433, USA. NR 28 TC 9 Z9 9 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 FEB PY 1992 VL 31 IS 2 BP 287 EP 294 DI 10.1117/12.56067 PG 8 WC Optics SC Optics GA HD795 UT WOS:A1992HD79500013 ER PT J AU MARTIN, CE HEFLEY, WE BRISTOW, DJ STEELE, DJ AF MARTIN, CE HEFLEY, WE BRISTOW, DJ STEELE, DJ TI TEAM-BASED INCREMENTAL ACQUISITION OF LARGE-SCALE UNPRECEDENTED SYSTEMS SO POLICY SCIENCES LA English DT Article AB This paper addresses certain shortcomings of traditional acquisition approaches, especially for large-scale, unprecedented systems. Shortcomings in the requirements engineering processes are emphasized. We review incremental acquisition approaches and identify issues essential to successful application of incremental acquisition approaches to overcome these shortcomings. In identifying these issues, cases based on systems being developed by the Air Force Space Command are examined. They are the Granite Sentry (GS), Space Defense Operations Centers (SPADOC), and Mobile Command and Control System (MCCS) programs. Three key aspects of the lessons learned from these efforts parallel the steps suggested by a recent Air Force Studies Board report for reducing risk in developing unprecedented systems. These are team-based development, managing requirements uncertainty and change, and increased use of incremental acquisition approaches. C1 CARNEGIE MELLON UNIV,DEPT ENGN & PUBL POLICY,PITTSBURGH,PA 15213. USAF,SPACE COMMAND,CTR SPACE & WARNING SYST,WASHINGTON,DC 20330. RP MARTIN, CE (reprint author), CARNEGIE MELLON UNIV,INST SOFTWARE ENGN,PITTSBURGH,PA 15213, USA. RI Hefley, William/C-8961-2013 OI Hefley, William/0000-0002-3469-1204 NR 48 TC 2 Z9 2 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0032-2687 J9 POLICY SCI JI Policy Sci. PD FEB PY 1992 VL 25 IS 1 BP 57 EP 75 DI 10.1007/BF00144633 PG 19 WC Planning & Development; Public Administration; Social Sciences, Interdisciplinary SC Public Administration; Social Sciences - Other Topics GA HP476 UT WOS:A1992HP47600005 ER PT J AU ENLOE, CL SHELL, JR AF ENLOE, CL SHELL, JR TI OPTIMIZING THE ENERGY RESOLUTION OF PLANAR RETARDING POTENTIAL ANALYZERS SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article ID VARIABLE GEOMETRY AB The energy resolution of a planar retarding potential analyzer can be optimized by using multiple retarding grids and varying the potential applied to the outermost grids. When properly biased, such an analyzer configuration can closely approach the energy resolution of an ideal device. As an added benefit, such an analyzer can be made highly transparent without sacrificing energy resolution. Experimental results verify the solutions of particle-tracking codes for multiple-grid configurations. RP ENLOE, CL (reprint author), USAF,PHILLIPS LAB,BEDFORD,MA 01731, USA. NR 8 TC 26 Z9 26 U1 0 U2 5 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD FEB PY 1992 VL 63 IS 2 BP 1788 EP 1791 DI 10.1063/1.1143339 PG 4 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA HC465 UT WOS:A1992HC46500022 ER PT J AU NSIEN, EE SILVERMAN, JF GOODMAN, ZD AF NSIEN, EE SILVERMAN, JF GOODMAN, ZD TI A 51-YEAR-OLD WOMAN WITH ELEVATED LIVER-ENZYMES 7 MONTHS AFTER TRANSPLANTATION FOR PRIMARY BILIARY-CIRRHOSIS SO SEMINARS IN LIVER DISEASE LA English DT Article ID ALLOGRAFT-REJECTION; DISEASE RECURRENCE; CYCLOSPORINE; FEATURES C1 E CAROLINA UNIV,SCH MED,DEPT PATHOL & LAB MED,GREENVILLE,NC 27834. USAF,INST PATHOL,DIV HEPAT PATHOL,WASHINGTON,DC 20330. RP NSIEN, EE (reprint author), E CAROLINA UNIV,SCH MED,GASTROENTEROL SECT,GREENVILLE,NC 27858, USA. NR 32 TC 4 Z9 4 U1 0 U2 0 PU THIEME MEDICAL PUBL INC PI NEW YORK PA 381 PARK AVE SOUTH, NEW YORK, NY 10016 SN 0272-8087 J9 SEMIN LIVER DIS JI Semin. Liver Dis. PD FEB PY 1992 VL 12 IS 1 BP 93 EP 100 DI 10.1055/s-2007-1007381 PG 8 WC Gastroenterology & Hepatology SC Gastroenterology & Hepatology GA HL119 UT WOS:A1992HL11900011 PM 1570555 ER PT J AU WATSON, J SMITH, V SCHMIDT, D NAVRATIL, D AF WATSON, J SMITH, V SCHMIDT, D NAVRATIL, D TI AUTOMATIC IMPLANTABLE CARDIOVERTER-DEFIBRILLATOR - EARLY EXPERIENCE AT WILFORD HALL USAF MEDICAL-CENTER SO SOUTHERN MEDICAL JOURNAL LA English DT Article ID VENTRICULAR-TACHYCARDIA; INTERNAL DEFIBRILLATOR; RESECTION; DEATH AB Fifteen patients with malignant ventricular arrhythmias were treated with the automatic implantable cardioverter-defibrillator (AICD) over a 22-month period. The cause of the arrhythmia was coronary artery disease in 13 of the patients (87%), sarcoid cardiomyopathy in one (7%), and a primary electrical abnormality in one (7%). The mean ejection fraction was 29%, with a range of 15% to 70%. Fourteen of the patients had inducible ventricular tachycardia using program stimulation. Defibrillating and rate-sensing leads were inserted through a lateral thoracotomy in 13 patients and through a median sternotomy in two patients in conjunction with other cardiac procedures. The generators were positioned in a subcutaneous pocket beneath the left costal cartilage. There was one early and one late death, both due to congestive heart failure. Neither was related to a ventricular tachyarrhythmia, and in each patient the AICD was functioning properly at the time of death. The mean follow-up period was 11.5 months, with five patients receiving a total of 17 shocks. We conclude that the AICD is a highly effective, low-risk treatment for malignant ventricular tachyarrhythmias. C1 WILFORD HALL USAF MED CTR,DIV CARDIOL,LACKLAND AFB,TX 78236. RP WATSON, J (reprint author), WILFORD HALL USAF MED CTR,DEPT SURG,CARDIOTHORAC SURG SECT,LACKLAND AFB,TX 78236, USA. NR 16 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 FEB PY 1992 VL 85 IS 2 BP 161 EP 163 PG 3 WC Medicine, General & Internal SC General & Internal Medicine GA HE866 UT WOS:A1992HE86600010 PM 1738882 ER PT J AU SWEET, RM AF SWEET, RM TI LESIONS OF THE NASAL RADIX IN PEDIATRIC-PATIENTS - DIAGNOSIS AND MANAGEMENT SO SOUTHERN MEDICAL JOURNAL LA English DT Article ID MASSES AB Lesions involving the nasal radix are not extremely uncommon in the pediatric population. Such lesions may represent inflammatory or infectious processes, neoplasia, traumatic sequelae, or developmental anomalies, but faulty embryogenesis is considered the most common cause. During my surgical experience, I have encountered nasal dermoids, nasal gliomas, and nasal encephaloceles resulting in lesions at the root of the nose. Each of these has unique features that will affect therapy. RP SWEET, RM (reprint author), USAF,MED CTR,DEPT PLAST & RECONSTRUCT SURG,WRIGHT PATTERSON AFB,OH 45433, USA. NR 10 TC 4 Z9 4 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 FEB PY 1992 VL 85 IS 2 BP 164 EP 169 PG 6 WC Medicine, General & Internal SC General & Internal Medicine GA HE866 UT WOS:A1992HE86600011 PM 1738883 ER PT J AU BRADBURY, CA STURGILL, KE MCKISSICK, DC AF BRADBURY, CA STURGILL, KE MCKISSICK, DC TI AUGER AND X-RAY PHOTOELECTRON-SPECTROSCOPY STUDY OF LOCALIZED INTERGRANULAR CRACKING IN A NICKEL CHROMIUM MOLYBDENUM IRON ALLOY SO SURFACE AND INTERFACE ANALYSIS LA English DT Article; Proceedings Paper CT 13TH SYMP ON APPLIED SURFACE ANALYSIS CY JUN 12-14, 1991 CL MINNEAPOLIS, MN AB An unused jet engine tailpipe, fabricated from a nickel-chromium-molybdenum-iron alloy, was found to be severely embrittled after 7 years of storage. Metallurgical and mechanical tests found a larger than specification size grain structure and several very localized areas of unexplained low ductility. These were surrounded by material with normal properties. Auger electron spectroscopy (AES) studies documented the elemental composition and relative concentration at the grain boundaries. Sodium, chlorine, sulfur, iron, chromium, nickel and carbon were present. The concentration of the iron was much higher than expected, while the nickel concentration was significantly lower. The concentrations remained at these levels through 90 min of ion sputtering. X-ray photoelectron binding energies of iron and carbon indicate that these elements were present as carbides. The presence of an abnormal chemistry at the grain boundaries, such as iron carbides, was considered to be the probable cause of the embrittlement. RP BRADBURY, CA (reprint author), USAF,AVIAT DEPOT,DEPT PROC,DIV MAT ENGN,NORFOLK,VA 23511, USA. NR 18 TC 0 Z9 0 U1 0 U2 0 PU JOHN WILEY & SONS LTD PI W SUSSEX PA BAFFINS LANE CHICHESTER, W SUSSEX, ENGLAND PO19 1UD SN 0142-2421 J9 SURF INTERFACE ANAL JI Surf. Interface Anal. PD FEB PY 1992 VL 18 IS 2 BP 119 EP 123 DI 10.1002/sia.740180210 PG 5 WC Chemistry, Physical SC Chemistry GA HJ670 UT WOS:A1992HJ67000009 ER PT J AU MCFARLAND, MJ VOGEL, CM SPAIN, JC AF MCFARLAND, MJ VOGEL, CM SPAIN, JC TI METHANOTROPHIC COMETABOLISM OF TRICHLOROETHYLENE (TCE) IN A 2 STAGE BIOREACTOR SYSTEM SO WATER RESEARCH LA English DT Note DE TRICHLOROETHYLENE; METHANE MONOOXYGENASE; REDUCING EQUIVALENTS; FORMATE ID METHYLOSINUS-TRICHOSPORIUM OB3B; METHANE MONO-OXYGENASE; BIODEGRADATION; DEGRADATION AB Competitive inhibition of trichloroethylene (TCE) removal by a mixed methanotrophic consortia was minimized by using a two stage bioreactor system supplied with sodium formate as reducing equivalents. A maximum TCE removal rate of 21.1 mg TCE per g volatile solids per day was observed when the influent formate concentration was 20 mM during continuous methane addition. Termination of methane while maintaining the same formate loading resulted in a TCE removal rate of 25.5 mg TCE per g volatile solids per day suggesting that methane competitively inhibits TCE removal. Formate serves as a noncompetitive substrate for methane monooxygenase system which is responsible for TCE removal. C1 ENGN & SERV LAB,TYNDALL AFB,FL 32403. RP MCFARLAND, MJ (reprint author), UTAH STATE UNIV,LOGAN,UT 84322, USA. NR 13 TC 45 Z9 48 U1 0 U2 4 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0043-1354 J9 WATER RES JI Water Res. PD FEB PY 1992 VL 26 IS 2 BP 259 EP 265 DI 10.1016/0043-1354(92)90227-U PG 7 WC Engineering, Environmental; Environmental Sciences; Water Resources SC Engineering; Environmental Sciences & Ecology; Water Resources GA HF015 UT WOS:A1992HF01500017 ER PT J AU KIRTLEY, KR LAKSHMINARAYANA, B AF KIRTLEY, KR LAKSHMINARAYANA, B TI A MULTIPLE PASS SPACE-MARCHING METHOD FOR 3-DIMENSIONAL INCOMPRESSIBLE VISCOUS-FLOW SO ZEITSCHRIFT FUR FLUGWISSENSCHAFTEN UND WELTRAUMFORSCHUNG LA English DT Article AB A new multiple pass space-marching method for the coupled three-dimensional form of the incompressible, partially parabolized Navier-Stokes equation is developed. Pseudocompressibility theory is incorporated to give a stable and convergent algorithm for internal flow computations. The effect of initial conditions, mesh size and the pseudocompressibility coefficient on stability and convergence of the method is studied. Also studied is the influence of the factorization error inherent in the linearized block implicit solution procedure. The accuracy of the method is assessed by computing the developing laminar flow in a square straight duct; comparisons with analysis are very good. In addition, the computation of the developing laminar flow in an S-shaped duct yields results in good agreement with the experimental data. RP KIRTLEY, KR (reprint author), SVERDRUP TECHNOL INC,LERC GRP,TURBOMACHINERY ANAL SECT,ARNOLD AFB,TN 37389, USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0342-068X J9 Z FLUGWISS WELTRAUM JI Z. Flugwiss. Weltraumf. PD FEB PY 1992 VL 16 IS 1 BP 49 EP 59 PG 11 WC Engineering, Aerospace SC Engineering GA HG499 UT WOS:A1992HG49900007 ER PT J AU SHARP, TJ ERVIN, CA AF SHARP, TJ ERVIN, CA TI IMPROVING RELIABILITY AND MAINTAINABILITY THROUGH PROCESS MANAGEMENT SO PROCEEDINGS ANNUAL RELIABILITY AND MAINTAINABILITY SYMPOSIUM LA English DT Article; Proceedings Paper CT 1992 ANNUAL SYMP ON RELIABILITY AND MAINTAINABILITY CY JAN 21-23, 1992 CL LAS VEGAS, NV SP IEEE, INST IND ENGINEERS, AMER SOC QUAL CONTROL, SYSTEM SAFETY SOC, SOC RELIAB ENGINEERS, SOC LOGIST ENGINEERS DE PROCESS MANAGEMENT; FASTENERS; ACTUATORS; CONNECTORS; TOOLS; SUBSYSTEMS; TOTAL QUALITY MANAGEMENT AB A recent study by the Scientific Advisory Board found that the Air Force spends approximately $2 billion a year on simple structural aircraft parts. Responsibility and management of these parts (fasteners, actuators, connectors, tools and subsystems, or FACTS) is spread across the Air Force major commands and weapon systems. In order to improve the reliability and maintainability (R & M) of these parts, and decrease the amount of time needed to acquire and provide the parts to the aircraft maintainers, the Acquisition Logistics Division FACTS Office (ALD/FA) was founded. The FACTS Office acts as an advocate for maintainers by helping with the procurement of better parts. The office also attempts to change the systems by which the parts are acquired. By making permanent effective changes to the systems, the FACTS Office goal is to work itself out of a job. Several of the methods used to assist in this endeavor are summarized. The FACTS Office has established an internal process using project teams, a sophisticated computer hardware and software system, and management support to improve the R & M of simple aircraft parts. This management system, though still in its infancy, was developed around the Total Quality Management (TQM) concept of process improvement. The successful implementation of this approach should provide a significant improvement in the way the Air Force acquires and supports these items. Already several projects have been completed successfully with both tangible and intangible savings identified. RP SHARP, TJ (reprint author), USAF,DIV LOGIST COMMAND & AERONAUT SYST,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 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 0149-144X J9 P ANNU REL MAINT SYM JI Proc. Annu. Reliab. Maintainab. Symp. PD JAN 21 PY 1992 IS SYM BP 93 EP 97 DI 10.1109/ARMS.1992.187805 PG 5 WC Engineering, Multidisciplinary; Engineering, Industrial SC Engineering GA HQ114 UT WOS:A1992HQ11400015 ER PT J AU WILLIAMS, BL AF WILLIAMS, BL TI HISTORICAL EFFORTS ON R-AND-M INTEGRATION INTO ENGINEERING CURRICULA SO PROCEEDINGS ANNUAL RELIABILITY AND MAINTAINABILITY SYMPOSIUM LA English DT Article; Proceedings Paper CT 1992 ANNUAL SYMP ON RELIABILITY AND MAINTAINABILITY CY JAN 21-23, 1992 CL LAS VEGAS, NV SP IEEE, INST IND ENGINEERS, AMER SOC QUAL CONTROL, SYSTEM SAFETY SOC, SOC RELIAB ENGINEERS, SOC LOGIST ENGINEERS DE EDUCATION; DESIGN AB Many approaches are being tried to incorporate reliability and maintainability principles and techniques into engineering education at both the undergraduate and graduate levels. The United States Air Force has been vitally interested in all graduate engineers becoming knowledgeable of R & M so they will be able to readily include R & M in their designs. R & M must be designed into new systems as they evolve through the complete design process, and not be attempted as an extra addition or afterthought. Only by having the designer be proficient in the principles and tools of R & M can the final design be successful. The only way for all the designers to have the knowledge of R&M is to include R & M in the design courses within the academic environment. The time is here for R & M education to be included in every engineers education. This does not imply that the education must be increased, or that some items must be eliminated to make room for the R & M principles in design. What is implied is the measurement of the design is not adequate until the success of the design (R & M) is determined. R & M education of engineering designers is absolutely necessary for the future if quality products are to meet the requirements to satisfy customers. RP WILLIAMS, BL (reprint author), USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 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 0149-144X J9 P ANNU REL MAINT SYM JI Proc. Annu. Reliab. Maintainab. Symp. PD JAN 21 PY 1992 IS SYM BP 131 EP 133 DI 10.1109/ARMS.1992.187811 PG 3 WC Engineering, Multidisciplinary; Engineering, Industrial SC Engineering GA HQ114 UT WOS:A1992HQ11400021 ER PT J AU SCHROEDER, JB SMITH, GM BURSCH, P MEISNER, JW AF SCHROEDER, JB SMITH, GM BURSCH, P MEISNER, JW TI FIELD-TEST OF AN ADVANCED MAINTENANCE-SYSTEM SO PROCEEDINGS ANNUAL RELIABILITY AND MAINTAINABILITY SYMPOSIUM LA English DT Article; Proceedings Paper CT 1992 ANNUAL SYMP ON RELIABILITY AND MAINTAINABILITY CY JAN 21-23, 1992 CL LAS VEGAS, NV SP IEEE, INST IND ENGINEERS, AMER SOC QUAL CONTROL, SYSTEM SAFETY SOC, SOC RELIAB ENGINEERS, SOC LOGIST ENGINEERS DE AUTOMATED MAINTENANCE SYSTEM; INTEGRATED DIAGNOSTICS; COMPUTER AIDED MAINTENANCE; EXPERT SYSTEMS RP SCHROEDER, JB (reprint author), USAF,WRIGHT LAB,FIGL,SELF REPAIRING FLIGHT CONTROL SYST ADV DEV PROGRAM,WRIGHT PATTERSON AFB,OH 45433, 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 0149-144X J9 P ANNU REL MAINT SYM JI Proc. Annu. Reliab. Maintainab. Symp. PD JAN 21 PY 1992 IS SYM BP 216 EP 222 DI 10.1109/ARMS.1992.187825 PG 7 WC Engineering, Multidisciplinary; Engineering, Industrial SC Engineering GA HQ114 UT WOS:A1992HQ11400035 ER PT J AU SCHANTZ, T AF SCHANTZ, T TI DEVELOPMENT OF A GENERIC FIBEROPTIC CABLE REPAIR-KIT SO PROCEEDINGS ANNUAL RELIABILITY AND MAINTAINABILITY SYMPOSIUM LA English DT Article; Proceedings Paper CT 1992 ANNUAL SYMP ON RELIABILITY AND MAINTAINABILITY CY JAN 21-23, 1992 CL LAS VEGAS, NV SP IEEE, INST IND ENGINEERS, AMER SOC QUAL CONTROL, SYSTEM SAFETY SOC, SOC RELIAB ENGINEERS, SOC LOGIST ENGINEERS DE FIBER OPTIC CABLE REPAIR; REPAIR KIT; SPLICE ENCLOSURE AB Fiber optic communication systems have been used by the Air Force since the early 1980's. Tactical field applications of fiber optic technology consist of using ruggedized tactical fiber optic cable to connect portable operations shelters with mobile radar systems, remote personnel away from portable field radio transmitters, and to make digital signal connections between adjacent shelters. Repairing fiber optic cables so they remain operational in a tactical environment has been impossible due to the lack of commercially available repair hardware. Due to this deficiency, action was needed. to design, develop, and test prototype repair hardware enclosed in a portable field kit capable of being used in a tactical/field environment. Repair hardware components enclosed in the kit include commercially available tools for removing the cable jacket and fiber buffer, a hand held cleaver, and mechanical epoxyless splices that fit inside a Splice Enclosure Assembly (SEA). The SEA surrounds and attaches to the repaired fibers (mechanical splices) to protect them from outside physical forces present under tactical usage conditions. The primary design objective was to produce a repaired fiber optic cable that exhibits the same strength characteristics as unbroken cable. The final SEA design was validated after successfully passing all phases of testing. Prototype kits were produced and transported to the field for additional testing. Action is currently underway to establish a multi-service acquisition contract to enable any DOD user the ability to easily procure the kit. RP SCHANTZ, T (reprint author), USAF,SACRAMENTO AIR LOGIST CTR,DIV SCI & TECHN,ADV TECHNOL BRANCH,MCCLELLAN AFB,CA 95652, USA. NR 0 TC 0 Z9 0 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 0149-144X J9 P ANNU REL MAINT SYM JI Proc. Annu. Reliab. Maintainab. Symp. PD JAN 21 PY 1992 IS SYM BP 407 EP 413 DI 10.1109/ARMS.1992.187856 PG 7 WC Engineering, Multidisciplinary; Engineering, Industrial SC Engineering GA HQ114 UT WOS:A1992HQ11400066 ER PT J AU HORNER, JL AF HORNER, JL TI METRICS FOR ASSESSING PATTERN-RECOGNITION PERFORMANCE SO APPLIED OPTICS LA English DT Note ID FILTERS AB Various metrics used to measure correlation filter performance are discussed. Their similarities and deficiencies are noted, and modifications are suggested. A computer simulation is included to highlight these differences. RP HORNER, JL (reprint author), USAF,ROME LAB,BEDFORD,MA 01731, USA. NR 5 TC 130 Z9 130 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 JAN 10 PY 1992 VL 31 IS 2 BP 165 EP 166 PG 2 WC Optics SC Optics GA HA864 UT WOS:A1992HA86400003 PM 20717388 ER PT J AU BERG, SR LANNI, JA AF BERG, SR LANNI, JA GP SOC EXPTL TEST PILOTS TI FALCON FOX-III - F-16 AMRAAM COMPATIBILITY TESTING AT EGLIN AFB SO 1992 REPORT TO THE AEROSPACE PROFESSION, SETP 36TH SYMPOSIUM SE SYMPOSIUM PROCEEDINGS - SOCIETY OF EXPERIMENTAL TEST PILOTS LA English DT Proceedings Paper CT 36th Symposium of the Society-of-Experimental-Test-Pilots CY SEP, 1992 CL BEVERLY HILLS, CA SP SOC EXPTL TEST PILOTS C1 USAF,WASHINGTON,DC 20330. NR 0 TC 1 Z9 1 U1 0 U2 0 PU SOC EXPERIMENTAL TEST PILOTS PI LANCASTER PA PO BOX 986, LANCASTER, CA 93534 SN 0742-3705 J9 SYMP P SOC EXP T PIL PY 1992 BP 4 EP 18 PG 15 WC Engineering, Aerospace SC Engineering GA BA57A UT WOS:A1992BA57A00001 ER PT J AU BIRK, FT STALEY, CW AF BIRK, FT STALEY, CW GP SOC EXPTL TEST PILOTS TI B-2 FLIGHT TEST UPDATE SO 1992 REPORT TO THE AEROSPACE PROFESSION, SETP 36TH SYMPOSIUM SE SYMPOSIUM PROCEEDINGS - SOCIETY OF EXPERIMENTAL TEST PILOTS LA English DT Proceedings Paper CT 36th Symposium of the Society-of-Experimental-Test-Pilots CY SEP, 1992 CL BEVERLY HILLS, CA SP SOC EXPTL TEST PILOTS C1 USAF,B-2 COMBINED TEST FORCE,WASHINGTON,DC 20330. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SOC EXPERIMENTAL TEST PILOTS PI LANCASTER PA PO BOX 986, LANCASTER, CA 93534 SN 0742-3705 J9 SYMP P SOC EXP T PIL PY 1992 BP 174 EP 187 PG 14 WC Engineering, Aerospace SC Engineering GA BA57A UT WOS:A1992BA57A00011 ER PT J AU GIRONE, M JONES, W AF GIRONE, M JONES, W GP SOC EXPTL TEST PILOTS TI INCREASING THE LETHALITY AND COMBAT MISSION FLEXIBILITY OF THE F-111 THROUGH FLIGHT TEST AND AN ENHANCED FLUTTER COMPUTER-PROGRAM SO 1992 REPORT TO THE AEROSPACE PROFESSION, SETP 36TH SYMPOSIUM SE SYMPOSIUM PROCEEDINGS - SOCIETY OF EXPERIMENTAL TEST PILOTS LA English DT Proceedings Paper CT 36th Symposium of the Society-of-Experimental-Test-Pilots CY SEP, 1992 CL BEVERLY HILLS, CA SP SOC EXPTL TEST PILOTS C1 USAF,WASHINGTON,DC 20330. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SOC EXPERIMENTAL TEST PILOTS PI LANCASTER PA PO BOX 986, LANCASTER, CA 93534 SN 0742-3705 J9 SYMP P SOC EXP T PIL PY 1992 BP 188 EP 208 PG 21 WC Engineering, Aerospace SC Engineering GA BA57A UT WOS:A1992BA57A00012 ER PT J AU HANCOCK, R FULLERTON, G AF HANCOCK, R FULLERTON, G GP SOC EXPTL TEST PILOTS TI X-29 VORTEX FLOW-CONTROL TESTS SO 1992 REPORT TO THE AEROSPACE PROFESSION, SETP 36TH SYMPOSIUM SE SYMPOSIUM PROCEEDINGS - SOCIETY OF EXPERIMENTAL TEST PILOTS LA English DT Proceedings Paper CT 36th Symposium of the Society-of-Experimental-Test-Pilots CY SEP, 1992 CL BEVERLY HILLS, CA SP SOC EXPTL TEST PILOTS C1 USAF,CTR FLIGHT TEST,EDWARDS AFB,CA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SOC EXPERIMENTAL TEST PILOTS PI LANCASTER PA PO BOX 986, LANCASTER, CA 93534 SN 0742-3705 J9 SYMP P SOC EXP T PIL PY 1992 BP 209 EP 219 PG 11 WC Engineering, Aerospace SC Engineering GA BA57A UT WOS:A1992BA57A00013 ER PT J AU KWON, KC JERMYN, H MAYFIELD, H AF KWON, KC JERMYN, H MAYFIELD, H TI KINETICS OF REMOVAL OF HEAVY-METALS BY A CHELATING ION-EXCHANGE RESIN - REGENERATION OF THE RESIN BY NH4OH SOLUTION SO ACS SYMPOSIUM SERIES LA English DT Review ID COPPER; COBALT AB Experiments were performed for the removal of Cr, Fe+2, Cu+2, and Ni+2 with Dowex XFS 4195.02 ion exchange resin at 25-degrees-C. A mathematical model for the removal of both Cr and Cu+2 from aqueous solutions in the presence of the resin was developed with the assumption that intraparticle diffusion is a controlling step for the adsorption of the heavy metal ions on the resin. The intraparticle diffusivities of Cr and Cu+2 through the resin were obtained to be 0.5 and 0.03 - 0.05 cm2/min, respectively. A series of experiments on the regeneration of Cu+2 saturated resin were conducted at 25-degrees-C, using 0.5 - 2 N NH4OH aqueous solution. A mathematical model on the regeneration of the exhausted resin was developed. C1 AIR FORCE CIVIL ENGN SUPPORT AGCY,RAVC,DIV ENVIRON,TYNDALL AFB,FL 32403. RP KWON, KC (reprint author), TUSKEGEE UNIV,SCH ENGN & ARCHITECTURE,DEPT CHEM ENGN,TUSKEGEE,AL 36088, USA. NR 13 TC 1 Z9 1 U1 1 U2 6 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0097-6156 J9 ACS SYM SER PY 1992 VL 509 BP 161 EP 178 PG 18 WC Chemistry, Multidisciplinary SC Chemistry GA KB613 UT WOS:A1992KB61300012 ER PT J AU STETTER, JR PENROSE, WR MACLAY, GJ BUTTNER, WJ FINDLAY, MW CAO, Z LUSKUS, LJ MULIK, JD AF STETTER, JR PENROSE, WR MACLAY, GJ BUTTNER, WJ FINDLAY, MW CAO, Z LUSKUS, LJ MULIK, JD TI THE ELECTROCHEMICAL SENSOR - ONE SOLUTION FOR POLLUTION SO ACS SYMPOSIUM SERIES LA English DT Review AB Electrochemical gas sensors represent an expanding field of analytical chemistry. They are employed in instruments for chemical detection, and a wide variety of both portable and fixed-site toxic gas monitors exist today. These sensors have also found applications in monitoring industrial atmospheres, medical gases, process streams, and environmental pollution. Gas chromatographic instrumentation, ventilation controllers, energy management systems, automobile exhaust analyzers, safety alarms, personal exposure monitors, and analytical laboratory gas analyzers also utilize electrochemical sensors. C1 IIT,DEPT CHEM,CHICAGO,IL 60616. ARMSTRONG LAB,SUSTAINED OPERAT BRANCH,BROOKS AFB,TX 78235. US EPA,ATMOSPHER RES & EXPOSURE ASSESSMENT LAB,RES TRIANGLE PK,NC 27711. RP STETTER, JR (reprint author), TRANSDUCER RES INC,999 CHICAGO AVE,NAPERVILLE,IL 60540, USA. NR 16 TC 0 Z9 0 U1 0 U2 5 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0097-6156 J9 ACS SYM SER PY 1992 VL 508 BP 103 EP 117 PG 15 WC Chemistry, Multidisciplinary SC Chemistry GA JY551 UT WOS:A1992JY55100010 ER PT J AU DAVIS, LP SCHELL, AC AF DAVIS, LP SCHELL, AC TI CFD HELPS THE AIR-FORCE FLY RIGHT SO AEROSPACE AMERICA LA English DT Article RP DAVIS, LP (reprint author), USAF,SYST COMMAND,WASHINGTON,DC 20330, 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 JAN PY 1992 VL 30 IS 1 BP 22 EP 26 PG 5 WC Engineering, Aerospace SC Engineering GA GZ225 UT WOS:A1992GZ22500006 ER PT J AU DISIMILE, PJ SCAGGS, NE AF DISIMILE, PJ SCAGGS, NE TI TURBULENT BOUNDARY-LAYER CHARACTERISTICS OVER A FLAT-PLATE WEDGE CONFIGURATION AT MACH 6 SO AIAA JOURNAL LA English DT Note ID LENGTHS C1 USAF,WRIGHT RES & DEV CTR,WRIGHT PATTERSON AFB,OH 45433. RP DISIMILE, PJ (reprint author), UNIV CINCINNATI,DEPT AEROSP ENGN,CINCINNATI,OH 45221, 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 0001-1452 J9 AIAA J JI AIAA J. PD JAN PY 1992 VL 30 IS 1 BP 270 EP 272 DI 10.2514/3.10910 PG 3 WC Engineering, Aerospace SC Engineering GA GZ915 UT WOS:A1992GZ91500036 ER PT J AU SCHWIETZ, LA GOURLEY, DS AF SCHWIETZ, LA GOURLEY, DS TI ALLERGIC FUNGAL SINUSITIS SO ALLERGY PROCEEDINGS LA English DT Article AB Allergic fungal sinusitis (AFS) is a noninvasive disease first described as a distinctive clinical and histopathologic entity more than 10 years ago. The typical patient is immunocompetent, atopic, has chronic sinusitis refractory to medical therapy, and 100% of those we have diagnosed have nasal polyps. Because of the histopathologic similarity to mucoid impaction of the bronchi seen in allergic bronchopulmonary aspergillosis, Aspergillus species were initially suspected as the causative agent. Subsequent reports include a number of non-Aspergillus-related cases. Both we and others have found a 7% incidence of AFS among chronic sinusitis patients requiring surgery. Relapse after surgical debridement and aeration is common and often responds to systemic corticosteroids. The diagnosis of AFS should be considered in all atopic patients with nasal polyps and chronic sinusitis. The clinical and histopathologic features of this disorder are reviewed. RP SCHWIETZ, LA (reprint author), WILFORD HALL USAF MED CTR,SGHMMA,LACKLAND AFB,TX 78236, USA. NR 0 TC 33 Z9 33 U1 0 U2 0 PU OCEAN SIDE PUBLICATIONS INC PI PROVIDENCE PA 95 PITMAN ST, PROVIDENCE, RI 02906 SN 1046-9354 J9 ALLERGY PROC JI Allergy Proc. PD JAN-FEB PY 1992 VL 13 IS 1 BP 3 EP 6 DI 10.2500/108854192778878980 PG 4 WC Allergy SC Allergy GA HG190 UT WOS:A1992HG19000002 PM 1577263 ER PT J AU BHOWMICK, SK JOHNSON, KR RETTIG, KR AF BHOWMICK, SK JOHNSON, KR RETTIG, KR TI CALL FOR CLARIFICATION OF VITAMIN-D RECOMMENDATIONS - REPLY SO AMERICAN JOURNAL OF DISEASES OF CHILDREN LA English DT Letter ID BREAST-FED INFANTS; EXPOSURE C1 UNIV SO ALABAMA,DEPT PEDIAT,MOBILE,AL 36688. RP BHOWMICK, SK (reprint author), USAF,MED CTR,DEPT PEDIAT,KEESLER AFB,MS 39534, USA. NR 6 TC 1 Z9 1 U1 0 U2 0 PU AMER MEDICAL ASSOC PI CHICAGO PA 515 N STATE ST, CHICAGO, IL 60610 SN 0002-922X J9 AM J DIS CHILD JI Am. J. Dis. Child. PD JAN PY 1992 VL 146 IS 1 BP 14 EP 14 PG 1 WC Pediatrics SC Pediatrics GA GY446 UT WOS:A1992GY44600009 ER PT J AU WHITE, CM HERGENROEDER, AC KLISH, WJ AF WHITE, CM HERGENROEDER, AC KLISH, WJ TI BONE-MINERAL DENSITY IN 15-YEAR-OLD TO 21-YEAR-OLD EUMENORRHEIC AND AMENORRHEIC SUBJECTS SO AMERICAN JOURNAL OF DISEASES OF CHILDREN LA English DT Article ID ANOREXIA-NERVOSA; BODY-COMPOSITION; LUMBAR SPINE; CHILDREN; WOMEN; MASS; OSTEOPOROSIS; ADOLESCENT; SKELETAL; RUNNERS AB The purposes of this study were to compare the lumbar spine bone mineral density of eumenorrheic and amenorrheic white subjects aged 15 to 21 years, and to describe the femoral neck bone mineral density in the eumenorrheic subjects. Twenty-eight eumenorrheic females had lumbar bone mineral density (mean +/- SD) of 1.213 +/- 0.117 g/cm2, and femoral neck bone mineral density of 1.032 +/- 0.092 g/cm2 measured with dual energy x-ray absorptiometry. Bone mineral density at neither site was related to age, energy intake, or calcium intake. Femoral neck bone mineral density was related to energy expenditure. Body composition was measured with total body electrical conductivity, and bone mineral density at both sites was related to body weight as much as fat-free mass. Eight amenorrheic subjects had a lumbar spine bone mineral density of 1.057 +/- 0.113 g/cm2, which was lower than in the eumenorrheic group. However, when controlling for weight, this difference was not significant. Peak lumbar and femoral neck bone mineral density may be reached at midadolescence. C1 BAYLOR COLL MED,TEXAS CHILDRENS HOSP,DEPT PEDIAT,6621 FANNIN,MC 4-189,HOUSTON,TX 77030. USAF,DEPT PEDIAT,MALMSTROM AFB,MT. FU NCRR NIH HHS [S07-RR0-5425, 5M01RR-00188-26] NR 37 TC 42 Z9 42 U1 0 U2 0 PU AMER MEDICAL ASSOC PI CHICAGO PA 515 N STATE ST, CHICAGO, IL 60610 SN 0002-922X J9 AM J DIS CHILD JI Am. J. Dis. Child. PD JAN PY 1992 VL 146 IS 1 BP 31 EP 35 PG 5 WC Pediatrics SC Pediatrics GA GY446 UT WOS:A1992GY44600014 PM 1736645 ER PT J AU TULLIO, CJ AF TULLIO, CJ TI MICROBIAL RESISTANCE TO CIPROFLOXACIN SO AMERICAN JOURNAL OF HOSPITAL PHARMACY LA English DT Letter RP TULLIO, CJ (reprint author), USAF,PHARM SERV,MED GRP 1,SGHP,LANGLEY AFB,VA 23665, USA. NR 1 TC 1 Z9 1 U1 0 U2 0 PU AMER SOC HEALTH-SYSTEM PHARMACISTS PI BETHESDA PA 7272 WISCONSIN AVE, BETHESDA, MD 20814 SN 0002-9289 J9 AM J HOSP PHARM JI Am. J. Hosp. Pharm. PD JAN PY 1992 VL 49 IS 1 BP 73 EP 73 PG 1 WC Pharmacology & Pharmacy SC Pharmacology & Pharmacy GA GX443 UT WOS:A1992GX44300007 PM 1570869 ER PT J AU STRATTON, RF CRUDO, DF VARELA, M SHAPIRA, E AF STRATTON, RF CRUDO, DF VARELA, M SHAPIRA, E TI DELETION OF THE PROXIMAL SHORT ARM OF CHROMOSOME-8 SO AMERICAN JOURNAL OF MEDICAL GENETICS LA English DT Article DE HEREDITARY SPHEROCYTOSIS; HYPOGONADISM; HYPOGONADOTROPIC; GONADOTROPIN RELEASING HORMONE ID HORMONE-RELEASING HORMONE; PARTIAL MONOSOMY 8P; SPHEROCYTOSIS GENE; TRANSLOCATION; LOCALIZATION AB We report on a 5-month-old boy with a de novo interstitial deletion of the proximal short arm of chromosome 8 (p21p11.2). He manifested bilateral cleft lip and palate, and apparent hypogonadism. Four previous case reports with similar deletions (p11.1p21) were associated with hypogonadotropic hypogonadism [Beighle et al., Hum Genet 38:113-121, 1977] and hereditary spherocytosis (HS) [Chilcote et al., Blood 6:156-159, 1987; Kitatani et al., Hum Genet 78:94-95, 1988; Lux et al., Nature 345:736-739, 1990]. Our patient has no demonstrable red blood cell abnormality, suggesting that the gene for HS is located in the region 8p11.1 to 8p11.2. C1 WILFORD HALL USAF MED CTR,DEPT PEDIAT,SAN ANTONIO,TX. TULANE UNIV,HAYWARD GENET CTR,NEW ORLEANS,LA 70118. RP STRATTON, RF (reprint author), S TEXAS GENET CTR,7922 EWING HALSELL,SUITE 410,SAN ANTONIO,TX 78229, USA. NR 33 TC 7 Z9 7 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 JAN 1 PY 1992 VL 42 IS 1 BP 15 EP 18 DI 10.1002/ajmg.1320420105 PG 4 WC Genetics & Heredity SC Genetics & Heredity GA GW607 UT WOS:A1992GW60700004 PM 1308359 ER PT J AU ISRAEL, RS AF ISRAEL, RS TI OUTPATIENT MANAGEMENT OF PYELONEPHRITIS - REPLY SO ANNALS OF EMERGENCY MEDICINE LA English DT Letter RP ISRAEL, RS (reprint author), USAF,WILFORD HALL MED CTR,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 0196-0644 J9 ANN EMERG MED JI Ann. Emerg. Med. PD JAN PY 1992 VL 21 IS 1 BP 111 EP 112 PG 2 WC Emergency Medicine SC Emergency Medicine GA GX195 UT WOS:A1992GX19500028 ER PT J AU MURPHY, CP HARDEN, EA THOMPSON, JM AF MURPHY, CP HARDEN, EA THOMPSON, JM TI GENERALIZED SEIZURES SECONDARY TO HIGH-DOSE BUSULFAN THERAPY SO ANNALS OF PHARMACOTHERAPY LA English DT Note ID BONE-MARROW TRANSPLANTATION; CYCLOPHOSPHAMIDE REGIMEN; LEUKEMIA; CHILDREN AB Two patients without prior histories of neurologic disorders experienced generalized seizures while receiving high-dose busulfan (total dose 16 mg/kg) as part of a preparative regimen for allogeneic bone marrow transplantation. A review of the literature revealed 14 similar occurrences. Maintenance of therapeutic blood concentrations of phenytoin in subsequent patients at our institution has resulted in no further patients experiencing generalized seizures. Prophylactic anticonvulsant therapy should be considered in patients receiving high doses of busulfan. C1 UNIV LOUISVILLE,HLTH SCI CTR,SCH MED,BONE MARROW TRANSPLANT UNIT,LOUISVILLE,KY 40202. WILFORD HALL USAF MED CTR,BONE MARROW TRANSPLANT SERV,LACKLAND AFB,TX 78236. RP MURPHY, CP (reprint author), UNIV LOUISVILLE,HOSP HUMANA,DEPT PHARM,BONE MARROW TRANSPLANT SERV,LOUISVILLE,KY 40202, USA. NR 8 TC 13 Z9 13 U1 0 U2 0 PU HARVEY WHITNEY BOOKS CO PI CINCINNATI PA PO BOX 42696, CINCINNATI, OH 45242 SN 1060-0280 J9 ANN PHARMACOTHER JI Ann. Pharmacother. PD JAN PY 1992 VL 26 IS 1 BP 30 EP 31 PG 2 WC Pharmacology & Pharmacy SC Pharmacology & Pharmacy GA HE808 UT WOS:A1992HE80800007 PM 1606341 ER PT J AU TAMBURINO, LA RIZKI, MM AF TAMBURINO, LA RIZKI, MM TI PERFORMANCE-DRIVEN AUTONOMOUS DESIGN OF PATTERN-RECOGNITION SYSTEMS SO APPLIED ARTIFICIAL INTELLIGENCE LA English DT Article ID EVOLUTIONARY SEARCH PROCEDURE; AUTOMATIC FEATURE DESIGN; MORPHOLOGY AB The closed-loop design experiment described in this paper demonstrates a three-phase automated design approach to pattern recognition. The experiment generates morphological feature detectors and then uses a novel application of genetic algorithms to select cooperative sets of features to pass to a neural net classifier. The self-organizing hybrid learning approach embodied in this closed-loop design methodology is complementary to conventional artificial intelligence (AI) expert systems that utilize rule-based approaches and a specific set of design elements. This experiment is part of a study directed to emulating the nondirected processes of biological evolution. The approach we discuss is semiautomatic in that initialization of computer programs requires human experience and expertise to select representations, develop search strategies, choose performance measures, and devise resource-allocation strategies. The hope is that these tasks will become easier with experience and will provide the means to exploit parallel processing without the need to analyze or program an entire design solution. C1 USAF,WRIGHT AERONAUT LABS,WRIGHT PATTERSON AFB,OH 45433. WRIGHT STATE UNIV,DEPT COMP SCI & ENGN,DAYTON,OH 45435. NR 33 TC 7 Z9 7 U1 0 U2 0 PU TAYLOR & FRANCIS PI BRISTOL PA 1900 FROST ROAD, SUITE 101, BRISTOL, PA 19007-1598 SN 0883-9514 J9 APPL ARTIF INTELL JI Appl. Artif. Intell. PD JAN-MAR PY 1992 VL 6 IS 1 BP 59 EP 77 DI 10.1080/08839519208949942 PG 19 WC Computer Science, Artificial Intelligence; Engineering, Electrical & Electronic SC Computer Science; Engineering GA HL023 UT WOS:A1992HL02300004 ER PT J AU LYONS, TJ HARDING, R FREEMAN, J OAKLEY, C AF LYONS, TJ HARDING, R FREEMAN, J OAKLEY, C TI G-INDUCED LOSS OF CONSCIOUSNESS ACCIDENTS - USAF EXPERIENCE 1982-1990 SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Note ID G-TOLERANCE AB Discussion of acceleration protection measures should be based on analysis of relevant accident data, including determination of high risk aircraft, G profiles, and pilot descriptions. There were 18 accidents (14 fatalities) attributed to G-induced loss of consciousness (G-LOC) in the United States Air Force (USAF) from 1982 through 1990. All 18 accidents occurred during single crewmember sorties, for an average rate of 2.1 per million single-seat flying hours (pmfh). The average G-LOC accident rate for 1982-4 was 4.0 pmfh, decreasing significantly to 1.3 pmfh for 1985-90. This decrease is associated with the USAF initiation of an anti-G-LOC training program. We reviewed accident records for G-LOC cofactor data and compared them to normal data for USAF pilots for age, height, weight, systolic and diastolic blood pressures, heart rate, total flying time, and aircraft-specific flying hours. Only for systolic blood pressure (higher) and aircraft-specific flying hours (shorter) were the mishap pilots significantly different from other USAF pilots. We found no evidence to support weight training vs. aerobic training, missed meals, or heat in causing G-LOC accidents. Thus the mishap pilots appeared to be a representative cross section of USAF pilots with respect to personal variables. More significant factors appeared to be G duration, G magnitude, use of G trousers, and experience in assigned aircraft. C1 USAF,CTR INSPECT & SAFETY,BROOKS AFB,TX 78235. RP LYONS, TJ (reprint author), ARMSTRONG LAB,OCCUPAT & ENVIRONM HLTH DIRECTORATE,BROOKS AFB,TX 78235, USA. NR 16 TC 22 Z9 26 U1 0 U2 2 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 JAN PY 1992 VL 63 IS 1 BP 60 EP 66 PG 7 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA GY245 UT WOS:A1992GY24500011 PM 1550536 ER PT J AU BRUCKART, JE AF BRUCKART, JE TI ANALYSIS OF CHANGES IN THE PILOT POPULATION AND GENERAL-AVIATION ACCIDENTS SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Note AB General Aviation pilots have been involved in a steadily decreasing number of accidents over the past 20 years. Changes in the age distribution, certification, and flying habits of these pilots make direct comparison of accident statistics inaccurate. This study reviews changes in the pilot population over the past 20 years to analyze their impact on accident statistics. Pilot age and certificate distributions from 1968 to 1987 were assembled from annual Federal Aviation Administration (FAA) surveys. Information about pilots involved in accidents was collected from annual National Transportation Safety Board (NTSB) reports. Trends in pilot age distribution, certification, aircraft use, flight planning, and weather were reviewed. The accident experience from the first 5 years of the study period was used to construct an adjusted plot of expected aircraft accidents. From 1968-87, the mean pilot age increased from 35 to 40 years and the number of pilots over the age of 60 increased five-fold. The number of pilots with Air Transport Pilot (ATP) certification tripled and instrument certification increased 80%. Accidents where an Instrument Flight Rules (IFR) flight plan was filed increased from 3.6% to 6.6% without a corresponding increase in the number of accidents in weather at or below instrument meteorologic conditions (IMC). The accident experience from 1968 to 1973 predicted 116,000 accidents from 1968 to 1987. The actual number of accidents was 40% less than predicted. The average pilot age has increased both due to more pilots over the age of 50 and less young student pilots. Despite an increase in the number of pilots holding an instrument rating and filing instrument flight plans, there was not an increase in IMC weather-related accidents. Comparison of adjusted accident rates to the actual accident experience shows a marked reduction in accident rates for each pilot age group during the 20-year period. This represents a real advancement in aviation safety where improved pilot performance resulted in fewer accidents. C1 USAF,SCH AEROSP MED,DIV EDUC,BROOKS AFB,TX 78235. NR 9 TC 3 Z9 3 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 JAN PY 1992 VL 63 IS 1 BP 75 EP 79 PG 5 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA GY245 UT WOS:A1992GY24500014 PM 1550539 ER PT J AU MILLER, RE KENT, JF GREEN, RP AF MILLER, RE KENT, JF GREEN, RP TI PRESCRIBING SPECTACLES FOR AVIATORS - USAF EXPERIENCE SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Note AB This special report was written for USAF vision specialists to use as a guide when prescribing spectacles for military aviators and to extend to the civilian sector the knowledge gained from the USAF experience. Visual correction in aviators presents some unique problems, especially for presbyopes. The demands of each individual aircraft environment need to be well understood. Ophthalmologists and optometrists must consider all pertinent aeromedical factors before prescribing spectacles for ametropic aviators. C1 ARMSTRONG LAB,AEROSP MED DIRECTORATE,OPHTHALMOL BRANCH,BROOKS AFB,TX. WILFORD HALL USAF MED CTR,OPTOMETRY SERV,LACKLAND AFB,TX 78236. NR 6 TC 5 Z9 6 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 JAN PY 1992 VL 63 IS 1 BP 80 EP 85 PG 6 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA GY245 UT WOS:A1992GY24500015 PM 1550540 ER PT J AU MITCHELL, JC AF MITCHELL, JC TI PAST PERSPECTIVES AND FUTURE-DIRECTIONS IN BIOELECTROMAGNETICS - THE CONTRIBUTIONS OF GUY,ARTHUR,W. SO BIOELECTROMAGNETICS LA English DT Editorial Material RP MITCHELL, JC (reprint author), OCCUPAT & ENVIRONM HLTH DIRECTORATE,ARMSTRONG LAB,BROOKS AFB,TX 78235, USA. NR 0 TC 0 Z9 0 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 0197-8462 J9 BIOELECTROMAGNETICS JI Bioelectromagnetics PY 1992 VL 13 IS 6 BP 449 EP 451 DI 10.1002/bem.2250130603 PG 3 WC Biology; Biophysics SC Life Sciences & Biomedicine - Other Topics; Biophysics GA KD857 UT WOS:A1992KD85700002 PM 1482411 ER PT J AU CHOU, CK GUY, AW KUNZ, LL JOHNSON, RB CROWLEY, JJ KRUPP, JH AF CHOU, CK GUY, AW KUNZ, LL JOHNSON, RB CROWLEY, JJ KRUPP, JH TI LONG-TERM, LOW-LEVEL MICROWAVE IRRADIATION OF RATS SO BIOELECTROMAGNETICS LA English DT Article ID TEMPERATURE; RADIATION; MICE AB Our goal was to investigate effects of long-term exposure to pulsed microwave radiation. The major emphasis was to expose a large sample of experimental animals throughout their lifetimes and to monitor them for effects on general health and longevity. An exposure facility was developed that enabled 200 rats to be maintained under specific-pathogen-free (SPF) conditions while housed individually in circularly-polarized waveguides. The exposure facility consisted of two rooms, each containing 50 active waveguides and 50 waveguides for sham (control) exposures. The experimental rats were exposed to 2,450-MHz pulsed microwaves at 800 pps with a 10-mus pulse width. The pulsed microwaves were square-wave modulated at 8-Hz. Whole body calorimetry, thermographic analysis, and power-meter analysis indicated that microwaves delivered at 0.144 W to each exposure waveguide resulted in an average specific absorption rate (SAR) that ranged from 0.4 W/kg for a 200-g rat to 0. 15 W/kg for an 800-g rat. Two hundred male, Sprague-Dawley rats were assigned in equal numbers to radiation-exposure and sham-exposure conditions. Exposure began at 8 weeks of age and continued daily, 21.5 h/day, for 25 months. Animals were bled at regular intervals and blood samples were analyzed for serum chemistries, hematological values, protein electrophoretic patterns, thyroxine, and plasma corticosterone levels. In addition to daily measures of body mass, food and water consumption by all animals, O2 consumption and CO2 production were periodically measured in a sub-sample (N=18) of each group. Activity was assessed in an open-field apparatus at regular intervals throughout the study. After 13 months, 10 rats from each group were euthanatized to test for immunological competence and to permit whole-body analysis, as well as gross and histopathological examinations. At the end of 25 months, the survivors (11 sham-exposed and 12 radiation-exposed rats) were euthanatized for similar analyses. The other 157 animals were examined histopathologically when they died spontaneously or were terminated in extremis. Statistical analyses by parametric and non-parametric tests of 155 parameters were negative overall for effects on general health, longevity, cause of death, or lesions associated with aging and benign neoplasia. Positive findings of effects on corticosterone level and immune system at 13 months exposure were not confirmed in a follow-up study of 20 exposed and 20 control rats. Differences in O2 consumption and CO2 production were found in young rats. A statistically significant increase of primary malignancies in exposed rats vs. incidence in controls is a provocative finding, but the biological significance of this effect in the absence of truncated longevity is conjectural. The positive findings need independent experimental evaluation. Overall, the results indicate that there were no definitive biological effects in rats chronically exposed to RF radiation at 2,450 MHz. C1 UNIV WASHINGTON,CTR BIOENGN,BIOELECTROMAGNET RES LAB,SEATTLE,WA 98195. UNIV WASHINGTON,DEPT BIOSTAT,SEATTLE,WA 98195. USAF,SCH AEROSP MED,DIV AEROSP MED,BROOKS AFB,TX 78235. FU NCI NIH HHS [CA 33752] NR 54 TC 97 Z9 106 U1 2 U2 7 PU WILEY-LISS PI NEW YORK PA DIV JOHN WILEY & SONS INC 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0197-8462 J9 BIOELECTROMAGNETICS JI Bioelectromagnetics PY 1992 VL 13 IS 6 BP 469 EP 496 DI 10.1002/bem.2250130605 PG 28 WC Biology; Biophysics SC Life Sciences & Biomedicine - Other Topics; Biophysics GA KD857 UT WOS:A1992KD85700004 PM 1482413 ER PT J AU JEKELI, C AF JEKELI, C TI VECTOR GRAVIMETRY USING GPS IN FREE-FALL AND IN AN EARTH-FIXED FRAME SO BULLETIN GEODESIQUE LA English DT Article AB The Global Positioning System (GPS) is considered in conjunction with a strapdown Inertial Measurement Unit (IMU) for measuring the gravity vector. A comparison of this system in space and on an airborne platform shows the relative importance of each system element in these two different acceleration environments. With currently available instrumentation, the acceleration measurement accuracy is the deciding factor in space, while on an Earth-bound (including airborne) platform, the attitude error of the IMU is most critical. A simulation shows that GPS-derived accelerations in space can be accurate to better than 0.1 mgal for a 30 s integration time, leading to estimates of 1-degrees mean gravity anomalies on the Earth's surface with an accuracy of 4-5 mgal. On an airborne platform, the horizontal gravity estimation error is tightly coupled to the attitude error of the platform, which can only be bounded by external attitude updates. Horizontal gravity errors of 5 mgal are achievable if the attitude is maintained to an accuracy of 1 arcsec. RP JEKELI, C (reprint author), USAF,SC,PHILLIPS LAB,GEOPHYS DIRECTORATE,BEDFORD,MA 01731, USA. NR 12 TC 3 Z9 3 U1 0 U2 0 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0007-4632 J9 B GEOD JI Bull. Geod. PY 1992 VL 66 IS 1 BP 54 EP 61 DI 10.1007/BF00806810 PG 8 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA HT070 UT WOS:A1992HT07000006 ER PT J AU SHOWALTER, DE AF SHOWALTER, DE TI FROM SECURING PEACE TO STRUCTURING PEACE - GERMAN MILITARY FORCES UNDERGOING CHANGE - GERMAN - WALLE,H SO CENTRAL EUROPEAN HISTORY LA English DT Book Review RP SHOWALTER, DE (reprint author), USAF ACAD,COLORADO SPRINGS,CO 80840, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU HUMANITIES PRESS INC PI ATLANTIC HIGHLANDS PA 165 FIRST AVENUE, ATLANTIC HIGHLANDS, NJ 07716-1289 SN 0008-9389 J9 CENT EUR HIST JI Cent. Eur. Hist. PY 1992 VL 25 IS 2 BP 246 EP 248 PG 3 WC History SC History GA LC888 UT WOS:A1992LC88800015 ER PT J AU SHOWALTER, DE AF SHOWALTER, DE TI UNDERSTANDING WAR - ESSAYS ON CLAUSEWITZ AND THE HISTORY OF MILITARY POWER - PARET,P SO CENTRAL EUROPEAN HISTORY LA English DT Book Review RP SHOWALTER, DE (reprint author), USAF ACAD, COLORADO SPRINGS, CO 80840 USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU CAMBRIDGE UNIV PRESS PI CAMBRIDGE PA EDINBURGH BLDG, SHAFTESBURY RD, CB2 8RU CAMBRIDGE, ENGLAND SN 0008-9389 J9 CENT EUR HIST JI Cent. Eur. Hist. PY 1992 VL 25 IS 3 BP 352 EP 356 PG 5 WC History SC History GA LM063 UT WOS:A1992LM06300010 ER PT J AU SHOWALTER, DE AF SHOWALTER, DE TI VONCLAUSEWITZ,CARL - HISTORICAL AND POLITICAL-WRITINGS - PARET,P, MORAN,D SO CENTRAL EUROPEAN HISTORY LA English DT Book Review RP SHOWALTER, DE (reprint author), USAF ACAD, COLORADO SPRINGS, CO 80840 USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU CAMBRIDGE UNIV PRESS PI CAMBRIDGE PA EDINBURGH BLDG, SHAFTESBURY RD, CB2 8RU CAMBRIDGE, ENGLAND SN 0008-9389 J9 CENT EUR HIST JI Cent. Eur. Hist. PY 1992 VL 25 IS 3 BP 352 EP 356 PG 5 WC History SC History GA LM063 UT WOS:A1992LM06300009 ER PT J AU DEANROSS, D MAYFIELD, H SPAIN, J AF DEANROSS, D MAYFIELD, H SPAIN, J TI ENVIRONMENTAL FATE AND EFFECTS OF JET FUEL JP-8 SO CHEMOSPHERE LA English DT Article AB The fate of jet fuel JP-8 was studied in quiescent flask test systems containing water, water/sediment slurries and soil. In water and water/sediment slurries, the major removal process was evaporation. No significant differences were noted between active and sterilized flasks, indicating that biodegradation was not a major factor in removal of JP-8 under these test conditions. When removal in water alone was compared to removal in water/sediment slurries, greater losses were observed in water alone, indicating that the presence of sediment sequesters the jet fuel and renders it less susceptible to volatilization. Removal of some components of JP-8 from active soil was significantly faster than removal in sterilized soil, indicating that biodegradation in soil is compound specific. Microbial activity in water was inhibited by JP-8 whereas activity in water/sediment slurries was enhanced by addition of JP-8. C1 USAF,CTR ENGN & SERV,TYNDALL AFB,FL 32403. RP DEANROSS, D (reprint author), INDIANA UNIV PURDUE UNIV,DEPT BIOL SCI,FT WAYNE,IN 46805, USA. NR 6 TC 10 Z9 10 U1 0 U2 3 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0045-6535 J9 CHEMOSPHERE JI Chemosphere PD JAN PY 1992 VL 24 IS 2 BP 219 EP 228 DI 10.1016/0045-6535(92)90395-8 PG 10 WC Environmental Sciences SC Environmental Sciences & Ecology GA HE446 UT WOS:A1992HE44600011 ER PT J AU DUMIRE, R CRABBE, MM MAPPIN, FG FONTENELLE, LJ AF DUMIRE, R CRABBE, MM MAPPIN, FG FONTENELLE, LJ TI AUTOLOGOUS BLOOD PATCH PLEURODESIS FOR PERSISTENT PULMONARY AIR LEAK SO CHEST LA English DT Article ID PNEUMOTHORAX; RECURRENT AB A persistent pulmonary air leak, whether as a result of pulmonary surgery or as a result of a traumatic or spontaneous pneumothorax, is a difficult and frustrating problem to manage. Several therapies have been employed, including thoracotomy and repair of the air leak, prolonged tube thoracostomy suction, and chemical pleurodesis. We report two cases in which patients with a prolonged air leak who were not candidates for thoracotomy had immediate successful treatment with an autologous "blood patch" pleurodesis. An autologous blood patch pleurodesis is, in our limited experience, a simple, painless, inexpensive, and effective treatment for patients with a persistent pulmonary air leak. C1 VET ADM MED CTR,SURG SERV,BILOXI,MA. RP DUMIRE, R (reprint author), USAF,MED CTR,DEPT SURG,WRIGHT PATTERSON AFB,OH 45433, USA. NR 3 TC 51 Z9 51 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 JAN PY 1992 VL 101 IS 1 BP 64 EP 66 DI 10.1378/chest.101.1.64 PG 3 WC Critical Care Medicine; Respiratory System SC General & Internal Medicine; Respiratory System GA GX871 UT WOS:A1992GX87100016 PM 1729112 ER PT J AU KOMADINA, KH CARLSON, TA STROLLO, PJ NAVRATIL, DL AF KOMADINA, KH CARLSON, TA STROLLO, PJ NAVRATIL, DL TI ELECTROPHYSIOLOGIC STUDY OF THE EFFECTS OF AMINOPHYLLINE AND METAPROTERENOL ON CANINE MYOCARDIUM SO CHEST LA English DT Article ID CARDIAC-ARRHYTHMIAS; THEOPHYLLINE TOXICITY; BETA-AGONISTS; ASTHMA; DISEASE; DYSRHYTHMIAS; EPINEPHRINE; ISOFLURANE; ENFLURANE; THERAPY AB Aminophylline and beta-adrenergic agonists are widely used in the treatment of obstructive lung diseases. It has been suggested that combined aminophylline and beta-agonist therapy may promote the development of atrial and ventricular arrhythmias. The effects of these agents in combination on myocardial conduction and tissue refractoriness have not been documented. We evaluated the electrophysiologic effects of intravenous aminophylline and inhaled metaproterenol on canine myocardium. Aminophylline produced significant decreases from baseline in the AH interval (85 +/- 6.5 [SD] to 63 +/- 4.1 ms [p < 0.02]), Wenckebach cycle length (WCL) (226 +/- 8.7 to 182 +/- 5.8 ms [p < 0.02]), and ventricular effective refractory period (VERP) (166 +/- 6.0 to 148 +/- 4.9 ms [p < 0.01]). Metaproterenol produced similar results, except metaproterenol significantly decreased the atrial effective refractory period (AERP) from 152 +/- 6.6 to 130 +/- 3.2 ms (p < 0.02), an effect not seen with aminophylline alone. Metaproterenol also produced significantly greater reductions in AH interval and WCL, as well as a greater increase in heart rate than aminophylline did. When compared with aminophylline alone, combined metaproterenol and aminophylline therapy produced significantly greater reductions in the AH interval (63 +/- 4.1 versus 48 +/- 1.2 ms for combined therapy [p < 0.01]), HV interval (32 +/- 1.2 versus 28 +/- 2.0 ms for combined therapy [p < 0.02]), WCL (182 +/- 5.8 versus 150 +/- 7.1 ms for combined therapy [p < 0.02]), and VERP (148 +/- 4.9 versus 132 +/- 2.0 ms for combined therapy [p < 0.02]). We conclude that both aminophylline and metaproterenol significantly enhance AV nodal and His-Purkinje conduction. Metaproterenol produced significant changes in both atrial and ventricular refractoriness, while aminophylline affected only ventricular tissue refractoriness. Metaproterenol produced significantly greater changes than aminophylline alone, and inhaled metaproterenol combined with intravenous aminophylline produced greater changes in AV nodal and His-Purkinje conduction and ventricular refractoriness than did aminophylline alone in a canine model. RP KOMADINA, KH (reprint author), WILFORD HALL USAF MED CTR,DEPT MED,LACKLAND AFB,TX 78236, USA. NR 29 TC 3 Z9 3 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 JAN PY 1992 VL 101 IS 1 BP 232 EP 238 DI 10.1378/chest.101.1.232 PG 7 WC Critical Care Medicine; Respiratory System SC General & Internal Medicine; Respiratory System GA GX871 UT WOS:A1992GX87100048 PM 1345901 ER PT J AU TALLEY, DG AF TALLEY, DG TI UNIVERSAL DEFINITIONS OF MIXTURE FRACTIONS AND PROGRESS VARIABLES FOR ARBITRARY STATES OF PREMIXING SO COMBUSTION AND FLAME LA English DT Article ID FLAME PROPAGATION; COMBUSTION AB Universal definitions of mixture fractions and progress variables are formulated that are free from inherent assumptions regarding the state of premixing. The definitions are found to be especially useful for a broad class of flows that can be described in terms of a single mixture fraction and a single progress variable. The definitions are derived rigorously from the conservation equations, and a useful geometric interpretation of the results is presented. The results can be extended to more general flows by defining more than one each of these variables, but it is found that the physical basis for doing this becomes more and more artificial as more of these variables need to be defined. Thus the usefulness of the whole mixture fraction/progress variable formalism eventually becomes limited. The present results provide a rational basis from which to better explore the properties of arbitrarily premixed flames. RP TALLEY, DG (reprint author), USAF,PHILLIPS LAB,EDWARDS AFB,CA 93523, USA. NR 12 TC 4 Z9 4 U1 0 U2 3 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 JAN PY 1992 VL 88 IS 1 BP 83 EP 101 DI 10.1016/0010-2180(92)90009-E PG 19 WC Thermodynamics; Energy & Fuels; Engineering, Multidisciplinary; Engineering, Chemical; Engineering, Mechanical SC Thermodynamics; Energy & Fuels; Engineering GA HB100 UT WOS:A1992HB10000008 ER PT J AU ELEWA, SA NAGARSENKER, BN NAGARSENKER, PB AF ELEWA, SA NAGARSENKER, BN NAGARSENKER, PB TI ON A TEST OF EQUALITY OF EXPONENTIAL POPULATIONS BASED ON CENSORED SAMPLES SO COMMUNICATIONS IN STATISTICS-SIMULATION AND COMPUTATION LA English DT Article DE BETA DISTRIBUTION; PERCENTILE POINTS ID DISTRIBUTIONS; LOCATION; PARAMETERS AB In this paper, the distribution of the likelihood ratio criterion for testing the equality of several two-parameter exponential distributions based on type II censored samples is obtained in a computational form. This is then used to compute the significance points of the likelihood ratio test statistic. C1 USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433. NR 23 TC 1 Z9 1 U1 0 U2 0 PU MARCEL DEKKER INC PI NEW YORK PA 270 MADISON AVE, NEW YORK, NY 10016 SN 0361-0918 J9 COMMUN STAT SIMULAT JI Commun. Stat.-Simul. Comput. PY 1992 VL 21 IS 3 BP 909 EP 917 DI 10.1080/03610919208813056 PG 9 WC Statistics & Probability SC Mathematics GA JD378 UT WOS:A1992JD37800018 ER PT J AU JAUCHEM, JR FREI, MR AF JAUCHEM, JR FREI, MR TI HEART-RATE AND BLOOD-PRESSURE CHANGES DURING RADIOFREQUENCY IRRADIATION AND ENVIRONMENTAL HEATING SO COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-PHYSIOLOGY LA English DT Review ID KETAMINE-ANESTHETIZED RATS; RADIO-FREQUENCY RADIATION; MICROWAVE-RADIATION; CARDIOVASCULAR ADJUSTMENTS; TEMPERATURE REGULATION; THERMOREGULATORY RESPONSES; PHYSIOLOGICAL-RESPONSES; CIRCULATORY RESPONSES; THERMAL STIMULATION; 2.8-GHZ MICROWAVES AB 1. Whole-body exposure of animals to radiofrequency radiation (RFR) can cause an increase in body temperature. 2. Responses to heating, whether due to RFR or to more conventional means, include changes in heart rate and blood pressure. 3. Although cardiovascular responses to various types of heating are similar, differences in the magnitude of changes may result from different thermal gradients within the body. 4. This review compares the effects of RFR and coventional environmental heating on heart rate and blood pressure. C1 TRINITY UNIV,DEPT BIOL,SAN ANTONIO,TX 78284. RP JAUCHEM, JR (reprint author), USAF,ARMSTRONG LAB HUMAN SYST,DIV ENERGY,BROOKS AFB,TX 78235, USA. NR 140 TC 20 Z9 21 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0300-9629 J9 COMP BIOCHEM PHYS A JI Comp. Biochem. Physiol. A-Physiol. PD JAN PY 1992 VL 101 IS 1 BP 1 EP 9 DI 10.1016/0300-9629(92)90619-2 PG 9 WC Biochemistry & Molecular Biology; Physiology; Zoology SC Biochemistry & Molecular Biology; Physiology; Zoology GA HD603 UT WOS:A1992HD60300001 PM 1347717 ER PT J AU DONNINI, FP AF DONNINI, FP TI FOUNDATION CRACKS IN ANZUS - DAMAGE ASSESSMENT, CONTROL, AND REPAIR SO COMPARATIVE STRATEGY LA English DT Article ID ZEALAND AB After almost 35 years of effective defense cooperation among allies, the Western world's collective security arrangement involving Australia, New Zealand, and the United States, better known as ANZUS, started to crumble. This surprised and frustrated many in all three nations, since ANZUS was considered a "showcase" alliance because of its strong foundation and special trilateral partnership, despite an asymmetrical arrangement that gave disproportionate influence to the smaller players. From the mid-1980s onward, old and new dilemmas caused the alliance structure to undergo great weakening and stress and made problem fixing difficult. As cracks in the alliance appeared, serious security issues became intertwined with economic and social ones, the no-nuclear policy of New Zealand being one of the most visible. This article examines pertinent features surrounding ANZUS changes, assesses their impacts, and addresses ways for shoring up ANZUS foundations in the future. RP DONNINI, FP (reprint author), USAF,2 HUNT WOOD DR,POQUOSON,VA 23662, USA. NR 76 TC 0 Z9 0 U1 1 U2 1 PU TAYLOR & FRANCIS PI BRISTOL PA 1900 FROST ROAD, SUITE 101, BRISTOL, PA 19007-1598 SN 0149-5933 J9 COMP STRATEGY PD JAN-MAR PY 1992 VL 11 IS 1 BP 99 EP 114 DI 10.1080/01495939208402865 PG 16 WC International Relations; Political Science SC International Relations; Government & Law GA GW565 UT WOS:A1992GW56500007 ER PT J AU RAOUF, RA PALAZOTTO, AN AF RAOUF, RA PALAZOTTO, AN TI NONLINEAR FREE-VIBRATIONS OF SYMMETRICALLY LAMINATED, SLIGHTLY COMPRESSIBLE CYLINDRICAL-SHELL PANELS SO COMPOSITE STRUCTURES LA English DT Article AB A geometrically non-linear dynamic shell theory presented by the authors in an earlier work is used to study the non-linear free vibrations of symmetrically laminated cylindrical shell panels. The theory accounts for arbitrary lamination constructions, anisotropy, and slight compression across the thickness. In this paper, this theory is used to derive the equation of motion of the panel with quadratic and cubic non-linearities and symmetric lamination schemes. The symbolic manipulator Mathematica(TM) is used to perform the Rayleigh-Ritz procedure and derive a single-mode approximation to the vibration of the panel. The Lindstedt-Poincare perturbation technique is used to analyze the resulting non-linear differential equation of motion and study the effects of non-linearities on the dynamics of free vibrations of the panel. A numerical example of a symmetrically laminated graphite/epoxy shell panel is used to demonstrate the procedure. The numerical example shows that non-linearities are of the hardening type and are more pronounced for smaller opening angles. Moreover, it shows that the larger-amplitude motions are dominated by the lower modes. C1 USAF,INST TECHNOL,DEPT AERONAUT & ASTRONAUT,WRIGHT PATTERSON AFB,OH 45433. RP RAOUF, RA (reprint author), USN ACAD,DEPT MECH ENGN,ANNAPOLIS,MD 21402, USA. NR 4 TC 12 Z9 12 U1 0 U2 1 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB SN 0263-8223 J9 COMPOS STRUCT JI Compos. Struct. PY 1992 VL 20 IS 4 BP 249 EP 257 DI 10.1016/0263-8223(92)90030-G PG 9 WC Materials Science, Composites SC Materials Science GA HP142 UT WOS:A1992HP14200005 ER PT J AU TAN, SC AF TAN, SC TI STRESS-ANALYSIS AND THE TESTING OF CELANESE AND IITRI COMPRESSION SPECIMENS SO COMPOSITES SCIENCE AND TECHNOLOGY LA English DT Article DE STRESS ANALYSIS; IITRI; COMPRESSION; COMPOSITES; BUCKLING; MATERIAL CHARACTERIZATION AB A quadrilateral isoparametric finite element method has been utilized to analyze the Celanese and Illinois Institute of Technology Research Institute (IITRI) compression test specimens. Formulations were based on plane strain and plane stress assumptions, and uniform displacement and uniform stress boundary conditions were both applied to solve the problem. Parametric studies were performed to show the effects on the stress distributions of the end tab material and of the thicknesses of the adhesive layer and the laminate. Experiments with the Celanese test method showed that fracture of the specimen was triggered by global buckling and was initiated from the tab tip as a result of high stress concentrations. The measured apparent strength is much lower than the value measured by other testing methods. This study reveals that the Celanese and the IITRI test methods need to be modified for measuring the compressive strength of unidirectional graphite/epoxy composites and probably for other material systems as well. The results of tests on thick IITRI specimens show that appropriate interpretation of the data is necessary because of high stress concentrations and non-uniformity in the specimens. RP TAN, SC (reprint author), USAF,MAT LAB,WL MLBM,WRIGHT PATTERSON AFB,OH 45433, USA. NR 16 TC 16 Z9 16 U1 5 U2 5 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB SN 0266-3538 J9 COMPOS SCI TECHNOL JI Compos. Sci. Technol. PY 1992 VL 44 IS 1 BP 57 EP 70 DI 10.1016/0266-3538(92)90025-X PG 14 WC Materials Science, Composites SC Materials Science GA HJ727 UT WOS:A1992HJ72700006 ER PT J AU MRACEK, CP KIM, MJ MOOK, DT AF MRACEK, CP KIM, MJ MOOK, DT TI 3-DIMENSIONAL POTENTIAL FLOWS BY A VORTICITY-PANEL METHOD SO COMPUTERS & FLUIDS LA English DT Article AB An alternate approach for predicting incompressible, potential flow over closed bodies is presented. The method uses triangular panels of linearly varying surface velocity. The velocities at the vertices of the triangles are obtained by minimizing the flow through the body at control points subject to the constraint that the vortex field is divergenceless. The results obtained by the present method show good agreement with analytical solutions for a spheroid and with observations from an experiment. The method is robust in that the solution converges as the number of elements is increased. Some desirable features of this method are that the elements are planar, the unknown vorticity components are on the actual surface of the body and the unknowns of the problem are primitive variables, which are essentially the components of the velocity on the surface. C1 USAF,ENY,WRIGHT PATTERSON AFB,OH 45433. NO ILLINOIS UNIV,DEPT MECH ENGN,DE KALB,IL 60115. VIRGINIA POLYTECH INST & STATE UNIV,DEPT ENGN SCI & MECH,BLACKSBURG,VA 24061. NR 8 TC 4 Z9 4 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0045-7930 J9 COMPUT FLUIDS JI Comput. Fluids PD JAN PY 1992 VL 21 IS 1 BP 31 EP 42 DI 10.1016/0045-7930(92)90031-P PG 12 WC Computer Science, Interdisciplinary Applications; Mechanics SC Computer Science; Mechanics GA HJ457 UT WOS:A1992HJ45700002 ER PT J AU STYTZ, MR FRIEDER, O AF STYTZ, MR FRIEDER, O TI VOLUME-PRIMITIVE BASED 3-DIMENSIONAL MEDICAL IMAGE RENDERING - CUSTOMIZED ARCHITECTURAL APPROACHES SO COMPUTERS & GRAPHICS LA English DT Article ID DISPLAY; ALGORITHMS; INFORMATION; TOMOGRAMS; SOFTWARE; OBJECTS AB This paper examines seven computer architectures specifically designed to rapidly render 3D medical images from voxel data. The paper opens with a discussion of work on architectures for 3D medical image rendering and then specifies parameters for assessing the performance of a 3D medical image rendering architecture. We then describe and assess the 3DP4, the Cube, the INSIGHT, the PARCUM II, the PICAP II, the Voxel Flinger, and the Voxel Processor architectures. For each machine the rendering speed, image resolution, underlying data model, image quality, parallel processing strategy, and 3D display technique are discussed. The architecture for each machine is characterized by its data storage technique, computational architecture, and parallelism strategy. C1 GEORGE MASON UNIV,DEPT COMP SCI,FAIRFAX,VA 22030. RP STYTZ, MR (reprint author), USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,WRIGHT PATTERSON AFB,OH 45433, USA. NR 84 TC 2 Z9 2 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0097-8493 J9 COMPUT GRAPH JI Comput. Graph. PY 1992 VL 16 IS 1 BP 85 EP 100 DI 10.1016/0097-8493(92)90075-7 PG 16 WC Computer Science, Software Engineering SC Computer Science GA HP185 UT WOS:A1992HP18500012 ER PT B AU BISHOP, EC AF BISHOP, EC BE Clewell, HJ TI RISK ASSESSMENT RISK MANAGEMENT FOR EMERGENCY RESPONSE OPERATIONS SO CONFERENCE ON CHEMICAL RISK ASSESSMENT IN THE DEPARTMENT OF DEFENSE (DOD): SCIENCE, POLICY, AND PRACTICE LA English DT Proceedings Paper CT Conference on Chemical Risk Assessment in the Department of Defense (DoD) - Science, Policy, and Practice CY APR 09-11, 1991 CL DAYTON, OH SP ARMSTRONG LAB, OCCUPAT & ENVIRONM HLTH DIRECTORATE, TOXICOL DIV, NAVAL MED RES INST, TOXICOL DETACHMENT, ARMY BIOMED RES & DEV LAB, NATL RES COUNCIL COMM TOXICOL C1 USAF,SGPA,OFF AIR FORCE SURGEON GEN,WASHINGTON,DC 20332. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CONFERENCE GOVERNMENTAL INDUSTRIAL HYGIENISTS PI CINCINNATI PA 6500 GLENWAY AVE, BLDG D-7, CINCINNATI, OH 45211 BN 0-936712-90-2 PY 1992 BP 11 EP 15 PG 5 WC Public, Environmental & Occupational Health; Toxicology SC Public, Environmental & Occupational Health; Toxicology GA BC41F UT WOS:A1992BC41F00003 ER PT B AU CHANDLER, KD AF CHANDLER, KD BE Clewell, HJ TI 3-TIER APPROACH TO CHEMICAL SPILL RESPONSE SO CONFERENCE ON CHEMICAL RISK ASSESSMENT IN THE DEPARTMENT OF DEFENSE (DOD): SCIENCE, POLICY, AND PRACTICE LA English DT Proceedings Paper CT Conference on Chemical Risk Assessment in the Department of Defense (DoD) - Science, Policy, and Practice CY APR 09-11, 1991 CL DAYTON, OH SP ARMSTRONG LAB, OCCUPAT & ENVIRONM HLTH DIRECTORATE, TOXICOL DIV, NAVAL MED RES INST, TOXICOL DETACHMENT, ARMY BIOMED RES & DEV LAB, NATL RES COUNCIL COMM TOXICOL C1 USAF,MED CTR,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CONFERENCE GOVERNMENTAL INDUSTRIAL HYGIENISTS PI CINCINNATI PA 6500 GLENWAY AVE, BLDG D-7, CINCINNATI, OH 45211 BN 0-936712-90-2 PY 1992 BP 93 EP 94 PG 2 WC Public, Environmental & Occupational Health; Toxicology SC Public, Environmental & Occupational Health; Toxicology GA BC41F UT WOS:A1992BC41F00017 ER PT J AU CHYU, MK OBERLY, CE AF CHYU, MK OBERLY, CE TI INFLUENCE OF OPERATING TEMPERATURE AND CONTACT THERMAL-RESISTANCE ON NORMAL ZONE PROPAGATION IN A METAL-SHEATHED HIGH-TC SUPERCONDUCTOR TAPE SO CRYOGENICS LA English DT Article; Proceedings Paper CT 2ND UNITED-STATES / JAPAN JOINT SEMINAR ON BASIC MECHANISMS OF HELIUM HEAT TRANSFER AND RELATED INFLUENCE ON STABILITY OF SUPERCONDUCTING MAGNETS CY AUG 26-30, 1991 CL LOS ANGELES, CA DE NORMAL ZONE PROPAGATION; YBCO; STABILITY ID YBA2CU3O7 AB The primary objective of this study is to examine the influence of operating temperature, ranging from 20 K to 80 K, and contact thermal resistance on the normal zone propagation in a silver-sheathed, YBCO superconductor tape. The distributions of temperature and heat generation are obtained numerically by solving a transient, two-dimensional energy equation with temperature-dependent properties and a current-sharing model. The present results suggest that, as a combined effect of greater cooling margin and higher thermal diffusivity, a 20 K operation is considerably more stable than its 80 K counterpart. In addition, during a pulse-induced quench zone propagation, most of the ohmic heating is generated in the YBCO superconductor for a 20 K operation. Conversely, the silver sheath generates most of the heat for an 80 K operation. Imposing transverse cooling significantly promotes stability and reduces normal zone propagation velocity. However, it has little influence on the instantaneous rise in local temperature during a disturbance. Such a temperature spike, largely caused by the low thermal diffusivity of YBCO, may exceed YBCO melting temperature. This detrimental phenomenon is more pronounced as the thermal resistance between the superconductor and metal sheath increases. However, this effect is significant only when the contribution of the interfacial resistance to the transverse resistance results in the latter being comparable to its longitudinal counterpart. C1 AEROPROP & POWER DIRECTORATE,WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433. RP CHYU, MK (reprint author), CARNEGIE MELLON UNIV,DEPT MECH ENGN,PITTSBURGH,PA 15213, USA. NR 18 TC 3 Z9 3 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 PY 1992 VL 32 IS 5 BP 519 EP 526 DI 10.1016/0011-2275(92)90088-R PG 8 WC Thermodynamics; Physics, Applied SC Thermodynamics; Physics GA HT213 UT WOS:A1992HT21300021 ER PT J AU TRAPP, CF BAKER, EJ AF TRAPP, CF BAKER, EJ TI MOBILE ENCAPSULATED LIPOMAS SO CUTIS LA English DT Article AB Mobile encapsulated lipomas are a benign neoplastic process with pronounced mobility in the subcutaneous plane. Characteristic clinical and histologic features differentiate this distinctive entity from similar reactive adipose processes. C1 WILFORD HALL USAF MED CTR,DEPT DERMATOL,LACKLAND AFB,TX 78236. NR 5 TC 4 Z9 4 U1 0 U2 0 PU EXCERPTA MEDICA INC PI NEW YORK PA 245 WEST 17TH STREET, NEW YORK, NY 10011 SN 0011-4162 J9 CUTIS JI Cutis PD JAN PY 1992 VL 49 IS 1 BP 63 EP 64 PG 2 WC Dermatology SC Dermatology GA HC264 UT WOS:A1992HC26400011 PM 1733662 ER PT J AU MEYERS, WM AF MEYERS, WM TI LEPROSY SO DERMATOLOGIC CLINICS LA English DT Review RP MEYERS, WM (reprint author), USAF,INST PATHOL,DEPT INFECT & PARASIT DIS PATHOL,WASHINGTON,DC 20306, USA. NR 0 TC 17 Z9 17 U1 1 U2 3 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 JAN PY 1992 VL 10 IS 1 BP 73 EP 96 PG 24 WC Dermatology SC Dermatology GA GX329 UT WOS:A1992GX32900006 PM 1730174 ER PT J AU LUPTON, GP GAGNIER, JM AF LUPTON, GP GAGNIER, JM TI THE RECOGNITION OF RECENTLY DESCRIBED AND POTENTIALLY PROBLEMATIC MELANOCYTIC LESIONS OF THE SKIN SO DERMATOLOGIC CLINICS LA English DT Article RP LUPTON, GP (reprint author), USAF,INST PATHOL,DEPT DERMATOPATHOL,WASHINGTON,DC 20306, USA. NR 0 TC 4 Z9 4 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 JAN PY 1992 VL 10 IS 1 BP 161 EP 187 PG 27 WC Dermatology SC Dermatology GA GX329 UT WOS:A1992GX32900009 PM 1730166 ER PT J AU LUPTON, GP FITZPATRICK, JE AF LUPTON, GP FITZPATRICK, JE TI NEW DEVELOPMENTS IN DERMATOPATHOLOGY - PREFACE SO DERMATOLOGIC CLINICS LA English DT Editorial Material RP LUPTON, GP (reprint author), USAF,INST PATHOL,DEPT DERMATOPATHOL,WASHINGTON,DC 20306, 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 JAN PY 1992 VL 10 IS 1 BP R10 EP R11 PG 2 WC Dermatology SC Dermatology GA GX329 UT WOS:A1992GX32900001 ER PT S AU REGIAN, W PITTS, G AF REGIAN, W PITTS, G BE Aiken, RM TI A FUZZY LOGIC-BASED INTELLIGENT TUTORING SYSTEM (ITS) SO EDUCATION AND SOCIETY : INFORMATION PROCESSING 92, VOL 2 SE IFIP TRANSACTIONS A-COMPUTER SCIENCE AND TECHNOLOGY LA English DT Proceedings Paper CT 12TH WORLD COMPUTER CONGRESS CY SEP 07-11, 1992 CL MADRID, SPAIN SP INT FEDERAT INFORMAT PROC RP REGIAN, W (reprint author), USAF,ARMSTRONG LAB,LACKLAND AFB,TX 78236, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE PUBL B V PI AMSTERDAM PA AMSTERDAM SN 0926-5473 BN 0-444-89748-8 J9 IFIP TRANS A PY 1992 VL 13 BP 66 EP 72 PG 7 WC Education & Educational Research; Information Science & Library Science; Sociology SC Education & Educational Research; Information Science & Library Science; Sociology GA BY23U UT WOS:A1992BY23U00009 ER PT J AU SPECTOR, JM MURAIDA, DJ MARLINO, MR AF SPECTOR, JM MURAIDA, DJ MARLINO, MR TI COGNITIVELY BASED MODELS OF COURSEWARE DEVELOPMENT SO ETR&D-EDUCATIONAL TECHNOLOGY RESEARCH AND DEVELOPMENT LA English DT Article ID INSTRUCTIONAL-DESIGN AB Many researchers are attempting to develop automated instructional design systems to guide subject matter experts through the courseware authoring process, a process that usually includes analysis, design, production, implementation, and maintenance. What is lacking in many existing efforts, however, is a systematic method for analyzing the interplay between user characteristics, the authoring environment, and the resulting quality of computer-based instruction (CBI). In this article, a cognitively oriented method for developing a useful and predictive model of the process of designing CBI is proposed, and its use in three small-scale case studies in Air Force training settings is reported. C1 USAF ACAD,COLORADO SPRINGS,CO 80840. RP SPECTOR, JM (reprint author), USAF,ARMSTRONG LAB,INSTRUCT DESIGN BRANCH,BROOKS AFB,TX 78235, USA. NR 26 TC 2 Z9 2 U1 0 U2 0 PU ASSOC EDUC COMMUNICATIONS & TECHNOLOGY PI WASHINGTON PA 1025 VERMONT AVE NW, SUITE 820, WASHINGTON, DC 20005 SN 1042-1629 J9 ETR&D-EDUC TECH RES JI ETR&D-Educ. Tech. Res. Dev. PY 1992 VL 40 IS 2 BP 45 EP 54 DI 10.1007/BF02297048 PG 10 WC Education & Educational Research SC Education & Educational Research GA KH924 UT WOS:A1992KH92400004 ER PT J AU CREECH, JR HANCOCK, DO AF CREECH, JR HANCOCK, DO TI NOVEL REFRACTIVE-INDEX GRADIENT DETECTION OF AMINO-ACIDS BIOCHEMICALS IN MICROBORE HPLC WITHOUT DERIVATIZATION SO FASEB JOURNAL LA English DT Meeting Abstract C1 USAF ACAD,DFC,COLORADO SPRINGS,CO 80840. 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 JAN 1 PY 1992 VL 6 IS 1 BP A171 EP A171 PG 1 WC Biochemistry & Molecular Biology; Biology; Cell Biology SC Biochemistry & Molecular Biology; Life Sciences & Biomedicine - Other Topics; Cell Biology GA GY440 UT WOS:A1992GY44000979 ER PT J AU DAYHOFF, JE HAMEROFF, SR SWENBERG, C LAHOZBELTRA, R AF DAYHOFF, JE HAMEROFF, SR SWENBERG, C LAHOZBELTRA, R TI THE ROLE OF MICROTUBULES IN NEURAL LEARNING SO FASEB JOURNAL LA English DT Meeting Abstract C1 UNIV MARYLAND,COLLEGE PK,MD 20742. UNIV ARIZONA,TUCSON,AZ 85724. USAF,RADIAT RES INST,BETHESDA,MD 20889. 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 JAN 1 PY 1992 VL 6 IS 1 BP A28 EP A28 PG 1 WC Biochemistry & Molecular Biology; Biology; Cell Biology SC Biochemistry & Molecular Biology; Life Sciences & Biomedicine - Other Topics; Cell Biology GA GY440 UT WOS:A1992GY44000155 ER PT J AU WILDERMUTH, RE AF WILDERMUTH, RE TI THE MILITARY AND THE MEDIA - THEY CAN BOTH WIN SO GOVERNMENT INFORMATION QUARTERLY LA English DT Article AB This article addresses concerns raised by both the media and the military public affairs officers charged to support them, during Desert Shield: Storm. Public affairs acted as a catalyst between two verv diverse organizations with differing goals and methods. The military was concerned about operational security, while the media wanted complete freedom. Since neither position, in the extreme, represents a just or workable solution, a compromise must be introducted. This article attempts to offer solutions to the concerns raised and to bring both sides closer together. RP WILDERMUTH, RE (reprint author), USN,HQ,US CENT COMMAND,CCPA,MACDILL AFB,FL 33608, USA. NR 2 TC 0 Z9 0 U1 0 U2 0 PU JAI PRESS INC PI GREENWICH PA 55 OLD POST RD-#2, PO BOX 1678, GREENWICH, CT 06836-1678 SN 0740-624X J9 GOV INFORM Q JI Gov. Inf. Q. PY 1992 VL 9 IS 4 BP 409 EP 417 DI 10.1016/0740-624X(92)90065-T PG 9 WC Information Science & Library Science SC Information Science & Library Science GA KB813 UT WOS:A1992KB81300002 ER PT B AU CZARNECKI, GJ AF CZARNECKI, GJ GP INT COUNCIL AERONAUT SCI TI DUAL-MODE FRACTURE OF COMPOSITE LAMINATES PENETRATED BY SPHERICAL PROJECTILES SO ICAS PROCEEDINGS 1992, VOLS 1 AND 2: 18TH CONGRESS OF THE INTERNATIONAL COUNCIL OF THE AERONAUTICAL SCIENCES LA English DT Proceedings Paper CT 18th Congress of the International-Council-of-the-Aeronautical-Sciences CY SEP 20-25, 1992 CL BEIJING, PEOPLES R CHINA SP INT COUNCIL AERONAUT SCI C1 WRIGHT LAB,WRIGHT PATTERSON AFB,OH. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER INST AERONAUTICS & ASTRONAUTICS PI WASHINGTON PA 370 L'ENFANT PROMENADE SW, WASHINGTON, DC 20024-2518 BN 1-56347-046-2 PY 1992 BP 1235 EP 1241 PG 7 WC Engineering, Aerospace SC Engineering GA BA84L UT WOS:A1992BA84L00160 ER PT J AU TOMA, JS AF TOMA, JS TI DESERT STORM COMMUNICATIONS - BUILDING A HIGH-TRAFFIC MILITARY COMMUNICATIONS-SYSTEM IN A FEW WEEKS WAS A TRIUMPH OF TECHNOLOGY, TRAINING, AND STREAMLINED JOINT-COMMAND RELATIONSHIPS SO IEEE COMMUNICATIONS MAGAZINE LA English DT Article RP TOMA, JS (reprint author), USAF,JOINT STAFF,DIV SPECIAL ACT J6,WASHINGTON,DC 20330, USA. NR 2 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 0163-6804 J9 IEEE COMMUN MAG JI IEEE Commun. Mag. PD JAN PY 1992 VL 30 IS 1 BP 19 EP 21 DI 10.1109/35.166643 PG 3 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA GZ849 UT WOS:A1992GZ84900003 ER PT J AU SALERNO, DP WASHER, TF AF SALERNO, DP WASHER, TF TI DESERT STORM - AIR ASSAULT COMMUNICATIONS - FROM A SINGLE TELEPHONE EXTENSION, THE 101ST AIRBORNES COMMUNICATIONS-SYSTEM QUICKLY GREW TO SUPPORT OFFENSIVE OPERATIONS DEEP INSIDE IRAQ SO IEEE COMMUNICATIONS MAGAZINE LA English DT Article C1 USAF,DIV AIRBORNE AIR ASSAULT 101,SIGNAL BATTAL 501,WASHINGTON,DC 20330. RP SALERNO, DP (reprint author), USAF,DIV ARTILLERY,DIV AIRBORNE AIR ASSAULT 101,WASHINGTON,DC 20330, USA. NR 0 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 0163-6804 J9 IEEE COMMUN MAG JI IEEE Commun. Mag. PD JAN PY 1992 VL 30 IS 1 BP 36 EP 41 DI 10.1109/35.166647 PG 6 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA GZ849 UT WOS:A1992GZ84900007 ER PT J AU MCKENZIE, DD AF MCKENZIE, DD TI UNITED-STATES-AIR-FORCE COMMUNICATIONS IN DESERT STORM - THE LARGEST TACTICAL COMMUNICATIONS-SYSTEM EVER ASSEMBLED WAS CRUCIAL TO THE OVERWHELMING DEFEAT OF THE COALITIONS ADVERSARIES SO IEEE COMMUNICATIONS MAGAZINE LA English DT Article RP MCKENZIE, DD (reprint author), USAF,CENT COMMAND,AIR FORCE 9,WASHINGTON,DC 20330, USA. NR 0 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 0163-6804 J9 IEEE COMMUN MAG JI IEEE Commun. Mag. PD JAN PY 1992 VL 30 IS 1 BP 42 EP 44 DI 10.1109/35.166648 PG 3 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA GZ849 UT WOS:A1992GZ84900008 ER PT J AU BRENDLER, JA AF BRENDLER, JA TI TACTICAL MILITARY COMMUNICATIONS - THE UNITED-STATES-ARMY BATTLEFIELD INFORMATION ARCHITECTURE WILL MAKE TODAYS SYSTEMS LOOK AS PRIMITIVE AS THE GREASE PENCILS AND CRANK-TO-RING TELEPHONES OF 30 YEARS AGO LOOK TO US SO IEEE COMMUNICATIONS MAGAZINE LA English DT Article RP BRENDLER, JA (reprint author), USAF,CO C,SIGNAL BATTAL AIRBORNE 50,FT BRAGG,NC, USA. NR 6 TC 1 Z9 1 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 0163-6804 J9 IEEE COMMUN MAG JI IEEE Commun. Mag. PD JAN PY 1992 VL 30 IS 1 BP 62 EP 72 DI 10.1109/35.166652 PG 11 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA GZ849 UT WOS:A1992GZ84900012 ER PT J AU ANDERSON, M AF ANDERSON, M TI A WAKE-UP CALL FOR FRUSTRATED FIRE FIGHTERS SO IEEE SOFTWARE LA English DT Letter RP ANDERSON, M (reprint author), USAF,CTR AIR FORCE MIL PERSONNEL,RANDOLPH AFB,LACKLAND AFB,TX 78236, USA. 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 0740-7459 J9 IEEE SOFTWARE JI IEEE Softw. PD JAN PY 1992 VL 9 IS 1 BP 10 EP 11 PG 2 WC Computer Science, Software Engineering SC Computer Science GA GY398 UT WOS:A1992GY39800002 ER PT J AU REGIAN, W PITTS, G AF REGIAN, W PITTS, G TI A FUZZY LOGIC-BASED INTELLIGENT TUTORING SYSTEM (ITS) SO IFIP TRANSACTIONS A-COMPUTER SCIENCE AND TECHNOLOGY LA English DT Article AB Most current Intelligent Tutoring Systems (ITS) use rule-based inference engines in order to select a prototype remediation for students1. Even Though this method has shown a great accomplishment in the area of artificial intelligence, many system experts are not satisfied with the rigidity of rule-based methods. Recently, research on possibilities for assessment using computer-based apprenticeship environments has been conducted by a team at the Learning and Development Research Center, University of Pittsburgh, suggests the possibility of using fuzzy variables instead of ordinary rule-based leveling methods. This paper describes an innovative technique for using a ''fuzzy relations'' approach to knowledge inference. This hybrid approach to the intelligent module of the ITS should prove to be a tremendous asset for timely individualized learning. Fuzzy relations not only provide speed in decision support over rule based inference engines, but a more experienced control of learning sequence, material and remediation. C1 TRINITY UNIV, DEPT COMP SCI, SAN ANTONIO, TX 78284 USA. RP REGIAN, W (reprint author), USAF, ARMSTRONG LAB, LACKLAND AFB, TX 78236 USA. NR 2 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0926-5473 J9 IFIP TRANS A JI IFIP Trans. A-Comp. Sci. Technol. PY 1992 VL 13 BP 66 EP 72 PG 7 WC Computer Science, Information Systems; Computer Science, Theory & Methods SC Computer Science GA LD444 UT WOS:A1992LD44400009 ER PT J AU PAO, YH KOMEYLI, K SHEI, D LECLAIR, S WINN, A AF PAO, YH KOMEYLI, K SHEI, D LECLAIR, S WINN, A TI THE ROLE OF THE EPISODAL ASSOCIATIVE MEMORY IN FEATURE-BASED DESIGN SO IFIP TRANSACTIONS B-APPLICATIONS IN TECHNOLOGY LA English DT Article AB In this paper we report on continuing research on the organization and functionalities of a certain type of computer-implemented associative memory. The associative memory in question is being created to serve as pan of a feature-based design system, at present to be used primarily in support of the design, fabrication, planning, or inspection planning of discrete mechanical machine parts. This present effort is consonnant with prior related work in the realm of case-based reasoning, especially as related to the role of memory in design, Our associative memory innovations are in the use of fuzzy sets and neural net computing in the representation, storage and retrieval of design, fabrication, inspection and materials knowledge. We have designed and implemented a considerable portion of the associative memory and have demonstrated retrieval of previous designs on the basis of qualitative geometry. We have also demonstrated ability to explore materials composition with the objective of meeting critical materials properties constraints. C1 USAF,SYSTEMS COMMAND,WRIGHT LABS,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. USAF,SYST COMMAND,WRIGHT LABS,MFG TECHNOL DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP PAO, YH (reprint author), CASE WESTERN RESERVE UNIV,10900 EUCLID AVE,CLEVELAND,OH 44106, USA. NR 28 TC 1 Z9 1 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0926-5481 J9 IFIP TRANS B JI IFIP Trans. B-Appl. Technol. PY 1992 VL 4 BP 309 EP 325 PG 17 WC Computer Science, Information Systems; Computer Science, Interdisciplinary Applications SC Computer Science GA KV260 UT WOS:A1992KV26000025 ER PT J AU BARTHES, JPA LECLAIR, S FINGER, S NIELSEN, E TAKALA, T GOEL, AK AF BARTHES, JPA LECLAIR, S FINGER, S NIELSEN, E TAKALA, T GOEL, AK TI THE ROLE OF EPISODAL ASSOCIATIVE MEMORY IN FEATURE-BASED DESIGN - DISCUSSION SO IFIP TRANSACTIONS B-APPLICATIONS IN TECHNOLOGY LA English DT Discussion C1 USAF,SYST COMMAND,WRIGHT LABS,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. CARNEGIE MELLON UNIV,DEPT CIVIL ENGN,PITTSBURGH,PA 15213. DIGITAL EQUIPMENT CORP,MARLBOROUGH,MA 01752. GEORGE WASHINGTON UNIV,DEPT ELECT ENGN & COMP SCI,WASHINGTON,DC 20052. GEORGIA INST TECHNOL,COLL COMP,ARTIFICIAL INTELLIGENCE GRP,ATLANTA,GA 30332. RP BARTHES, JPA (reprint author), UNIV TECHNOL COMPIEGNE,DEPT GENIE INFORMAT,BP 649,F-60200 COMPIEGNE,FRANCE. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0926-5481 J9 IFIP TRANS B JI IFIP Trans. B-Appl. Technol. PY 1992 VL 4 BP 327 EP 330 PG 4 WC Computer Science, Information Systems; Computer Science, Interdisciplinary Applications SC Computer Science GA KV260 UT WOS:A1992KV26000026 ER PT B AU CURPHY, GJ AF CURPHY, GJ BE Clark, KE Clark, MB Campbell, DP TI AN EMPIRICAL-INVESTIGATION OF THE EFFECTS OF TRANSFORMATIONAL AND TRANSACTIONAL LEADERSHIP ON ORGANIZATIONAL-CLIMATE, ATTRITION, AND PERFORMANCE SO IMPACT OF LEADERSHIP LA English DT Proceedings Paper CT Conference on the Impact of Leadership CY JUL, 1991 CL COLORADO SPRINGS, CO SP CTR CREAT LEADERSHIP C1 USAF ACAD,DEPT BEHAV SCI,COLORADO SPRINGS,CO 80840. NR 0 TC 11 Z9 11 U1 0 U2 1 PU CENTER CREATIVE LEADERSHIP PI GREENSBORO PA PO BOX 26300, GREENSBORO, NC 27438-6300 BN 0-912879-95-5 PY 1992 BP 177 EP 187 PG 11 WC Psychology, Applied; Management SC Psychology; Business & Economics GA BA46J UT WOS:A1992BA46J00014 ER PT B AU TALLARIGO, RS ROSEBUSH, MA AF TALLARIGO, RS ROSEBUSH, MA BE Clark, KE Clark, MB Campbell, DP TI AN EXAMINATION OF LEADER BEHAVIORS, ORGANIZATIONAL-CLIMATE, AND SUBORDINATE REACTIONS SO IMPACT OF LEADERSHIP LA English DT Proceedings Paper CT Conference on the Impact of Leadership CY JUL, 1991 CL COLORADO SPRINGS, CO SP CTR CREAT LEADERSHIP C1 DEF EQUAL OPPORTUNITY MANAGEMENT INST,PATRICK AFB,FL 32925. NR 0 TC 0 Z9 0 U1 0 U2 0 PU CENTER CREATIVE LEADERSHIP PI GREENSBORO PA PO BOX 26300, GREENSBORO, NC 27438-6300 BN 0-912879-95-5 PY 1992 BP 189 EP 198 PG 10 WC Psychology, Applied; Management SC Psychology; Business & Economics GA BA46J UT WOS:A1992BA46J00015 ER PT B AU GIBSON, FW AF GIBSON, FW BE Clark, KE Clark, MB Campbell, DP TI LEADER ABILITIES AND GROUP-PERFORMANCE AS A FUNCTION OF STRESS SO IMPACT OF LEADERSHIP LA English DT Proceedings Paper CT Conference on the Impact of Leadership CY JUL, 1991 CL COLORADO SPRINGS, CO SP CTR CREAT LEADERSHIP C1 USAF ACAD,DEPT BEHAV SCI & LEADERSHIP,COLORADO SPRINGS,CO 80840. NR 0 TC 0 Z9 0 U1 0 U2 0 PU CENTER CREATIVE LEADERSHIP PI GREENSBORO PA PO BOX 26300, GREENSBORO, NC 27438-6300 BN 0-912879-95-5 PY 1992 BP 333 EP 343 PG 11 WC Psychology, Applied; Management SC Psychology; Business & Economics GA BA46J UT WOS:A1992BA46J00027 ER PT J AU DIELTZ, JP AF DIELTZ, JP TI AIR-FORCE WORK INFORMATION MANAGEMENT-SYSTEM CREATES AN ORGANIZATIONAL IMPACT SO INDUSTRIAL ENGINEERING LA English DT Article RP DIELTZ, JP (reprint author), USAF,MANPOWER & PERSONNEL MANAGEMENT ENGN TEAM,RANDOLPH AFB,TX, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU INST INDUSTRIAL ENGINEERS PI NORCROSS PA 25 TECHNOLOGY PARK/ATLANTA, NORCROSS, GA 30092 SN 0019-8234 J9 IND ENG PD JAN PY 1992 VL 24 IS 1 BP 40 EP & PG 0 WC Engineering, Industrial SC Engineering GA HA308 UT WOS:A1992HA30800011 ER PT J AU MURAIDA, DJ SPECTOR, JM AF MURAIDA, DJ SPECTOR, JM TI THE ADVANCED INSTRUCTIONAL-DESIGN ADVISER SO INSTRUCTIONAL SCIENCE LA English DT Article ID FREE-RECALL; MODALITY; SYSTEMS; ABILITY; RECENCY; MEDIA AB The Advanced Instructional Design Advisor is an Air Force project which involves the development and testing of automated instructional design guidance for use by Air Force technical training specialists in the development of computer-based training (CBT). This paper discusses the particular structure of an experimental instructional design advisor and how it has and will be used as a research platform to guide future efforts in automating instructional design. The experimental system described makes use of automated instructional strategies which can be systematically altered along a number of dimensions (e.g., amount of learner control, use of qualitative feedback during practice, etc.). Such a tool is essential to conduct research in this area, and has the added benefit of facilitating the rapid prototyping of CBT. RP MURAIDA, DJ (reprint author), USAF,ARMSTRONG LAB,HUMAN RESOURCES DIRECTORATE,HRTC,BROOKS AFB,TX 78235, USA. NR 52 TC 0 Z9 0 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0020-4277 J9 INSTR SCI JI Instr. Sci. PY 1992 VL 21 IS 4 BP 239 EP 253 PG 15 WC Education & Educational Research; Psychology, Educational SC Education & Educational Research; Psychology GA LA620 UT WOS:A1992LA62000003 ER PT J AU CINNAMON, JD JONES, SE HOUSE, JW WILSON, LL AF CINNAMON, JD JONES, SE HOUSE, JW WILSON, LL TI A ONE-DIMENSIONAL ANALYSIS OF ROD PENETRATION SO INTERNATIONAL JOURNAL OF IMPACT ENGINEERING LA English DT Article AB A new one-dimensional analysis of penetration and cratering of semi-infinite targets is presented. This analysis is used to predict the profile hole diameters and penetration depths in semi-infinite targets by rod penetrators in the intermediate impact velocity range 13 km/s. The results are completely algebraic and require no numerical integration of any of the differential equations involved. The input data to the formulae presented comes from crater volume/kinetic energy relations and yield strengths that are determined from laboratory tests. Correlation with a large number of experiments is given. Thc results are quite acceptable. C1 WRIGHT LABS,ARMAMENT DIRECTORATE,EGLIN AFB,FL 32542. RP CINNAMON, JD (reprint author), USAF ACAD,COLORADO SPRINGS,CO 80840, USA. NR 12 TC 6 Z9 9 U1 1 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0734-743X J9 INT J IMPACT ENG JI Int. J. Impact Eng. PY 1992 VL 12 IS 2 BP 145 EP 166 DI 10.1016/0734-743X(92)90382-4 PG 22 WC Engineering, Mechanical; Mechanics SC Engineering; Mechanics GA JG296 UT WOS:A1992JG29600001 ER PT J AU SABAAWI, M GUTIERREZNUNEZ, J FRAGALA, MR AF SABAAWI, M GUTIERREZNUNEZ, J FRAGALA, MR TI NEUROSARCOIDOSIS PRESENTING AS SCHIZOPHRENIFORM DISORDER SO INTERNATIONAL JOURNAL OF PSYCHIATRY IN MEDICINE LA English DT Article DE SARCOIDOSIS; NEUROSARCOIDOSIS; SCHIZOPHRENIFORM DISORDER; ORGANIC MENTAL DISORDER; SIADH; STEREOTYPIC BEHAVIORS ID PSYCHOSIS; BRAIN; SARCOIDOSIS; MANIFESTATIONS AB A patient whose clinical presentation met criteria for schizophreniform disorder was ultimately found to have neurosarcoidosis, and the psychiatric symptoms responded to steroid treatment. The ongoing search for organic etiology was prompted by the presence of cognitive decline, perseveration and rare bizarre automatisms. This is virtually the first reported association between schizophreniform disorder and sarcoidosis. We reviewed the literature on neurologic involvement and psychiatric manifestations in sarcoidosis as well as the concurrence between organicity and schizophrenic psychosis. The importance of attending to all elements of the mental status examination in a patient with complex atypical findings is underscored. C1 USAF,MALCOLM GROW MED CTR,DIV MENTAL HLTH,ANDREWS AFB,WASHINGTON,DC 20331. UNIFORMED SERV UNIV HLTH SCI,SCH MED,WASHINGTON,DC. NR 27 TC 17 Z9 17 U1 0 U2 0 PU BAYWOOD PUBL CO INC PI AMITYVILLE PA 26 AUSTIN AVE, AMITYVILLE, NY 11701 SN 0091-2174 J9 INT J PSYCHIAT MED JI Int. J. Psychiatr. Med. PY 1992 VL 22 IS 3 BP 269 EP 274 PG 6 WC Psychiatry SC Psychiatry GA KB831 UT WOS:A1992KB83100010 PM 1487390 ER PT J AU PRESTIDGE, BR KAPLAN, I COX, RS BAGSHAW, MA AF PRESTIDGE, BR KAPLAN, I COX, RS BAGSHAW, MA TI THE CLINICAL-SIGNIFICANCE OF A POSITIVE POSTIRRADIATION PROSTATIC BIOPSY WITHOUT METASTASES SO INTERNATIONAL JOURNAL OF RADIATION ONCOLOGY BIOLOGY PHYSICS LA English DT Article DE PROSTATE CANCER; RADIATION THERAPY; POSTTREATMENT BIOPSY ID EXTERNAL BEAM RADIOTHERAPY; STAGE-C ADENOCARCINOMA; RADIATION-THERAPY; RADICAL PROSTATECTOMY; CARCINOMA; CANCER; ANTIGEN; IMPLANTATION; RECURRENCE; SURVIVAL AB To define the prognostic value of a post-irradiation prostatic biopsy, the outcome of 203 previously irradiated patients who underwent post-treatment biopsy was analyzed. The majority of patients were selected for biopsy based on an abnormal digital rectal exam or elevated prostate specific antigen. Patients with distant metastases found at the time of biopsy were excluded from further analysis. One hundred thirty-nine (139) of these had a positive biopsy and 64 were negative. Those with a positive biopsy tended to present with more locally-advanced (Stage B2/C) tumors (61%) compared to those with negative biopsies (42%). The 10- and 15-year survival and cause-specific survival from the time of initial presentation were similar for both groups. However, those with a negative biopsy had a more favorable survival and cause-specific survival from the time of post-treatment biopsy and were less likely to develop distant metastases than the positive biopsy group. These data suggest that a positive prostatic biopsy is associated with a greater likelihood of subsequent distant relapse and decreased survival following biopsy relative to patients with negative biopsies. Since a positive post-treatment biopsy is more likely among patients presenting with locally-advanced disease, perhaps more aggressive initial therapy (i.e., interstitial boost or hyperthermia) would benefit this subgroup. C1 STANFORD UNIV,MED CTR,DEPT RADIAT ONCOL,STANFORD,CA 94305. RP PRESTIDGE, BR (reprint author), USAF,WRIGHT AERONAUT LABS,DEPT RADIAT ONCOL,DIV RADIAT ONCOL,SGHRT,WRIGHT PATTERSON AFB,OH 45433, USA. NR 43 TC 39 Z9 39 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0360-3016 J9 INT J RADIAT ONCOL JI Int. J. Radiat. Oncol. Biol. Phys. PY 1992 VL 24 IS 3 BP 403 EP 408 PG 6 WC Oncology; Radiology, Nuclear Medicine & Medical Imaging SC Oncology; Radiology, Nuclear Medicine & Medical Imaging GA JU040 UT WOS:A1992JU04000001 PM 1399723 ER PT J AU PRESTIDGE, BR KAPLAN, I COX, RS AF PRESTIDGE, BR KAPLAN, I COX, RS TI THE BOTTOM LINE - RESPONSE TO HANKS SO INTERNATIONAL JOURNAL OF RADIATION ONCOLOGY BIOLOGY PHYSICS LA English DT Letter C1 JOINT CTR RADIAT THERAPY,BOSTON,MA 02115. STANFORD UNIV,MED CTR,SCH MED,DEPT RADIAT ONCOL,STANFORD,CA 94305. RP PRESTIDGE, BR (reprint author), USAF,WILFORD HALL MED CTR,DEPT RADIAT ONCOL,SAN ANTONIO,TX 78250, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0360-3016 J9 INT J RADIAT ONCOL JI Int. J. Radiat. Oncol. Biol. Phys. PY 1992 VL 24 IS 5 BP 991 EP 991 PG 1 WC Oncology; Radiology, Nuclear Medicine & Medical Imaging SC Oncology; Radiology, Nuclear Medicine & Medical Imaging GA KA570 UT WOS:A1992KA57000043 PM 1447044 ER PT J AU FLANDERS, JB JONES, CH MADISON, RM AF FLANDERS, JB JONES, CH MADISON, RM TI EXPERT SYSTEM FOR REAL-TIME AIRCRAFT MONITORING SO JOURNAL OF AIRCRAFT LA English DT Article AB Real-time aircraft testing is increasing in both frequency and complexity. Greater demands are being placed on flight test engineers to simultaneously monitor aircraft systems during flight and to perform problem analysis real time. This has caused a rise in requirements for automated and intelligent monitoring systems. The use of state-of-the-art off-the-shelf hardware and software has provided a cost effective base for supporting development of real-time expert systems to aid in these monitoring tasks. A brief introduction to the telemetry environment is given. This is followed by descriptions of some specific applications including a propulsion monitor. The final section discusses some aspects of knowledge engineering and an inherent conflict between knowledge engineering and software engineering. RP FLANDERS, JB (reprint author), USAF,CTR FLIGHT TEST,EDWARDS AFB,CA 93523, 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 0021-8669 J9 J AIRCRAFT JI J. Aircr. PD JAN-FEB PY 1992 VL 29 IS 1 BP 79 EP 84 DI 10.2514/3.46128 PG 6 WC Engineering, Aerospace SC Engineering GA HC691 UT WOS:A1992HC69100011 ER PT J AU MITCHEL, WC BROWN, GJ REA, LS SMITH, SR AF MITCHEL, WC BROWN, GJ REA, LS SMITH, SR TI DEEP LEVELS IN UNDOPED HORIZONTAL BRIDGMAN GAAS BY FOURIER-TRANSFORM PHOTOCONDUCTIVITY AND HALL-EFFECT SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID SEMI-INSULATING GAAS; TRANSIENT SPECTROSCOPY; GROWN GAAS; ELECTRON TRAPS; CROSS-SECTIONS; EL2 DEFECT; RECOMBINATION; CAPTURE; OXYGEN; BULK AB Deep levels between 0.1 and 1.0 eV in semi-insulating and high resistivity undoped horizontal Bridgman GaAs have been studied by temperature-dependent Hall effect (TDH) and Fourier transform photoconductivity (FTPC). Activation energies at 0.77, 0.426, and 0.15 eV have been observed by TDH. Photoionization thresholds at 1.0, 0.8, 0.56, 0.44, and 0.25 are reported. The photoconductivity thresholds at 0.56 and 0.25 eV are reported for the first time. New features in the 0.44 eV threshold suggest that the defect responsible for this level has a small lattice relaxation and Frank-Condon shift. Possible associations of the FTPC and TDH energies with the deep-level transient spectroscopy levels EL2, EL3, and EL6 are presented. C1 UNIV DAYTON,RES INST,DAYTON,OH 45469. RP MITCHEL, WC (reprint author), WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 33 TC 8 Z9 8 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 JAN 1 PY 1992 VL 71 IS 1 BP 246 EP 251 DI 10.1063/1.350750 PG 6 WC Physics, Applied SC Physics GA GX655 UT WOS:A1992GX65500039 ER PT J AU LOOK, DC LORANCE, DK SIZELOVE, JR STUTZ, CE EVANS, KR WHITSON, DW AF LOOK, DC LORANCE, DK SIZELOVE, JR STUTZ, CE EVANS, KR WHITSON, DW TI ALLOY SCATTERING IN P-TYPE ALXGA1-XAS SO JOURNAL OF APPLIED PHYSICS LA English DT Article AB The hole mobility of Be-doped (approximately 2 x 10(17) cm-3) AlxGa1-xAs, for x = 0-1, is analyzed both theoretically and experimentally. Alloy scattering is very important, and in fact reduces the hole mobility from 150 to less than 90 cm2/V s at x = 0.5. The main parameter in the alloy scattering formulation, the alloy potential E(al), is found to be about 0.5 eV for p-type AlxGa1-xAs. C1 WRIGHT LAB,SOLID STATE ELECTR DIRECTORATE,ELR,WRIGHT PATTERSON AFB,OH 45433. INDIANA UNIV PENN,DEPT PHYS,INDIANA,PA 15701. RP LOOK, DC (reprint author), WRIGHT STATE UNIV,RES CTR,DAYTON,OH 45435, USA. NR 13 TC 40 Z9 41 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 JAN 1 PY 1992 VL 71 IS 1 BP 260 EP 266 DI 10.1063/1.350752 PG 7 WC Physics, Applied SC Physics GA GX655 UT WOS:A1992GX65500041 ER PT J AU HENSHAW, TL ONGSTAD, AP LAWCONNELL, RI AF HENSHAW, TL ONGSTAD, AP LAWCONNELL, RI TI PHOTODISSOCIATION OF S4N4 .1. 248 NM SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID LASER-INDUCED FLUORESCENCE; ENERGY-TRANSFER; NS; (SN)X; STATES; B2-PI; S2N2; NITRIDE; SULFUR AB S4N4 was photolyzed by the KrF excimer laser source at 248 nm. The excited state photofragments produced are the NS(B 2-PI)r and NS(H 2-PI)1/2, NS(G 2-SIGMA-) and NS(I 2-SIGMA+) states. Single band progression fluorescence out of upsilon' = 0 for NS(H)1/2 and upsilon' = 2 for NS(G,I) are observed. Franck-Condon factors have been calculated for NS(H) up to upsilon' = 3. The electronic transition moment for the NS(H-X) transition was found to decrease slightly with increasing RBAR. The radiative lifetime of the 0,5 band of NS(H)1/2 is determined to be 87 +/-11 ns. The collisional quenching constants at 335 K for various species including N2 (k(q) = 3.4 +/- 0.7 X 10(-10) cm3 s-1), CF4 (k(q) = 1.8 +/- 0.4 X 10(-10) cm3 s-1), SF6 (k(q) = 3.9 +/- 0.7 x 10(-10) cm3 s-1) and He (k(q) = 5.6 +/- 2.2 X 10(-11) cm3 s-1) are reported. A semiempirical calculation using a PM3 Hamiltonian was used to calculate the heats of formation of various (SN)x species. A mechanism is proposed to account for the presence of these excited states based on laser fluence, excited state time histories, spectral composition and calculated heats of formation. NS(B) is postulated to arise directly from an intermediate photolysis product which is assumed to be acyclic S3N3. The NS(H 2-PI)1/2 subband, NS(G 2-SIGMA-) and NS(I 2-SIGMA+) states are thought to be produced from a resonant interaction with the KrF line at 248 nm and vibrationally excited ground state NS. Using the I2 (D2g' - A2u') emission as an actinometer, the overall efficiency on the conversion of absorbed photons by S4N4 into NS(B 2-PI) is 2.6 +/- 0.7%. RP HENSHAW, TL (reprint author), USAF ACAD,FRANK J SEILER RES LAB,COLORADO SPRINGS,CO 80840, USA. NR 50 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 JAN 1 PY 1992 VL 96 IS 1 BP 53 EP 66 DI 10.1063/1.462491 PG 14 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA GY249 UT WOS:A1992GY24900008 ER PT J AU WARREN, RQ NKYA, WMMM SHAO, JF ANDERSON, SA WOLF, H HENDRIX, CW KANDA, P WABUKE, M BOSWELL, RN REDFIELD, RR KENNEDY, RC AF WARREN, RQ NKYA, WMMM SHAO, JF ANDERSON, SA WOLF, H HENDRIX, CW KANDA, P WABUKE, M BOSWELL, RN REDFIELD, RR KENNEDY, RC TI COMPARISON OF ANTIBODY REACTIVITY TO HUMAN-IMMUNODEFICIENCY-VIRUS TYPE-1 (HIV-1) GP160 EPITOPES IN SERA FROM HIV-1-INFECTED INDIVIDUALS FROM TANZANIA AND FROM THE UNITED-STATES SO JOURNAL OF CLINICAL MICROBIOLOGY LA English DT Article ID NEUTRALIZING ANTIBODIES; ENVELOPE GLYCOPROTEIN; SYNTHETIC PEPTIDES; HTLV-III; EPIDEMIOLOGY; INFECTION; AIDS; SEQUENCE; CHIMPANZEES; ASSOCIATION AB In this study, we compared sera from 159 human immunodeficiency virus type 1 (HIV-1)-infected individuals from Tanzania and 103 infected individuals from the United States for antibodies reactive with 10 HIV-1 gp160 epitopes defined by synthetic peptides. Our data indicate that the anti-gp160 antibody fine specificity differs between infected individuals from these two geographically diverse populations. For example, 50% of the Tanzanian sera contained antibodies reactive with an immunodominant HIV-1 gp41 epitope defined by peptide 600-611, whereas 91% of the sera from the United States were reactive. Differences in serologic reactivity between HIV-1-infected individuals from Tanzania and the United States were also observed with gp160 epitopes defined by peptides 503-528 and 846-860. Included among the peptides examined were four which corresponded to the V3 region of gp120. The majority of sera from either country contained antibodies reactive with peptide RP142, whose V3 sequence is based upon that of HIV-1 isolate MN. Further characterization of serologic reactivity suggested that sera from Tanzania were more likely to neutralize HIV-1 isolate IIIB or MN in vitro than were sera from the United States. These differences in antibody fine specificity between HIV-1-infected individuals from Tanzania and the United States suggest that regional isolates of HIV-1 may exist. C1 SW FDN BIOMED RES,DEPT VIROL & IMMUNOL,SAN ANTONIO,TX 78284. SW FDN BIOMED RES,CTR AIDS RES,SAN ANTONIO,TX 78284. WILFORD HALL USAF MED CTR,DEPT MED,LACKLAND AFB,TX 78236. KILIMANJARO CHRISTIAN MED CTR,MOSHI,TANZANIA. MUHIMBILI MED CTR,DAR ES SALAAM,TANZANIA. BAXTER HEALTHCARE CORP,DUARTE,CA 91010. WALTER REED ARMY MED CTR,DEPT RETROVIRAL RES,ROCKVILLE,MD 20850. RI Hendrix, Craig/G-4182-2014 OI Hendrix, Craig/0000-0002-5696-8665 FU NIAID NIH HHS [AI25151, AI26462, AI28696] NR 32 TC 14 Z9 14 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 JAN PY 1992 VL 30 IS 1 BP 126 EP 131 PG 6 WC Microbiology SC Microbiology GA GV355 UT WOS:A1992GV35500020 PM 1370844 ER PT J AU HANCOCK, RH SWAN, RH AF HANCOCK, RH SWAN, RH TI NIFEDIPINE-INDUCED GINGIVAL OVERGROWTH - REPORT OF A CASE TREATED BY CONTROLLING PLAQUE SO JOURNAL OF CLINICAL PERIODONTOLOGY LA English DT Article DE NIFEDIPINE; GINGIVAL OVERGROWTH; PLAQUE CONTROL ID HYPERPLASIA AB A review of the literature reveals little evidence that controlling plaque reduces and controls nifedipine-induced gingival overgrowth. The case presented suggests that significant reduction and control of nifedipine-induced gingival overgrowth can be achieved by thorough scaling and root planing along with meticulous plaque control. C1 WILFORD HALL USAF MED CTR,DEPT PERIODONT,LACKLAND AFB,TX 78236. WILFORD HALL USAF MED CTR,DEPT GEN DENT,LACKLAND AFB,TX 78236. NR 18 TC 39 Z9 41 U1 0 U2 0 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 JAN PY 1992 VL 19 IS 1 BP 12 EP 14 DI 10.1111/j.1600-051X.1992.tb01141.x PG 3 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA GX215 UT WOS:A1992GX21500002 PM 1732304 ER PT J AU SCHULER, JL CAMM, JH HOUSTON, G AF SCHULER, JL CAMM, JH HOUSTON, G TI BILATERAL ERUPTION SEQUESTRA - REPORT OF CASE SO JOURNAL OF DENTISTRY FOR CHILDREN LA English DT Article DE ERUPTION; PAIN; BONY SPICULES; OCCLUSAL SURFACE; ORAL MUCOSA; ERUPTION SEQUESTRUM AB An eruption sequestrum is a tiny spicule of bone overlying the crown of an erupting permanent molar either before or immediately after the emergence of the cusp tips through the oral mucosa. As the tooth continues to erupt, the bone fragment usually sequestrates through the mucosa; and the spicule may be found lying on the occlusal surface of the molar, attached to the soft tissue overlying the distal half of the occlusal surface. C1 WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. NR 4 TC 2 Z9 3 U1 0 U2 0 PU AMER SOC DENTISTRY CHILD PI CHICAGO PA JOHN HANCOCK CENTER, 875 N MICHIGAN AVE, STE 4040, CHICAGO, IL 60611-1901 SN 0022-0353 J9 J DENT CHILD JI J. Dent. Child. PD JAN-FEB PY 1992 VL 59 IS 1 BP 70 EP 72 PG 3 WC Dentistry, Oral Surgery & Medicine; Pediatrics SC Dentistry, Oral Surgery & Medicine; Pediatrics GA HC073 UT WOS:A1992HC07300014 ER PT J AU STURGESS, GJ SLOAN, DG LESMERISES, AL HENEGHAN, SP BALLAL, DR AF STURGESS, GJ SLOAN, DG LESMERISES, AL HENEGHAN, SP BALLAL, DR TI DESIGN AND DEVELOPMENT OF A RESEARCH COMBUSTOR FOR LEAN BLOW-OUT STUDIES 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 In a modern aircraft gas turbine combustor, the phenomenon of lean blow-out (LBO) is of major concern. To understand the physical processes involved in LBO, a research combustor was designed and developed specifically to reproduce recirculation patterns and LBO processes that occur in a real gas turbine combustor. A total of eight leading design criteria were established for the research combustor. This paper discusses the combustor design constraints, aerothermochemical design, choice of combustor configurations, combustor sizing, mechanical design, combustor light-off, and combustor acoustic considerations that went into the final design and fabrication. Tests on this combustor reveal a complex sequence of events such as flame lift-off, intermittency, and onset of axial flame instability leading to lean blowout. The combustor operates satisfactorily and is yielding benchmark quality data for validating and refining computer models for predicting LBO in real engine combustors. C1 USAF,WRDC,POSF,WRIGHT PATTERSON AFB,OH 45433. UNIV DAYTON,DAYTON,OH 45469. RP STURGESS, GJ (reprint author), PRATT & WHITNEY AIRCRAFT,E HARTFORD,CT 06108, USA. NR 17 TC 14 Z9 16 U1 1 U2 3 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 13 EP 19 DI 10.1115/1.2906297 PG 7 WC Engineering, Mechanical SC Engineering GA HP743 UT WOS:A1992HP74300003 ER PT J AU KRAZINSKI, JL VANKA, SP PEARCE, JA ROQUEMORE, WM AF KRAZINSKI, JL VANKA, SP PEARCE, JA ROQUEMORE, WM TI A COMPUTATIONAL FLUID-DYNAMICS AND CHEMISTRY MODEL FOR JET FUEL THERMAL-STABILITY 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 ID DEPOSITION AB This paper describes the development of a model for predicting the thermal decomposition rates of aviation fuels. A thermal deposition model was incorporated into FLANELS-2D, an existing computational fluid dynamics (CFD) code that solves the Reynolds-averaged conservation equations of mass, momentum, and energy. The decomposition chemistry is modeled by three global Arrhenius expressions in which the fuel decomposition was assumed to be due to an autoxidation reaction with dissolved oxygen. The deposition process was modeled by assuming that all deposit-forming species transported to the wall adhered and formed a deposit. Calibration of the model required the determination of the following parameters for a given fuel: (1) the pre-exponential constant and activation energy for the wall reaction, (2) the pre-exponential constant and activation energy for the bulk autoxidation reaction, and (3) the pre-exponential constant and activation energy for the precursor decomposition reaction. Values for these parameters were estimated using experimental data from published heated-tube experiments. Results show that the FLANELS-2D code performed well in estimating the fuel temperatures and that the three-equation chemistry model performed reasonably well in accounting for both the rate of deposition and the amount of dissolved oxygen present in the fuel at the end of the heated tube. C1 UNIV ILLINOIS,URBANA,IL 61801. AERO PROP & POWER LAB,WRIGHT PATTERSON AFB,OH 45433. RP KRAZINSKI, JL (reprint author), ARGONNE NATL LAB,ARGONNE,IL 60439, USA. NR 22 TC 12 Z9 13 U1 2 U2 4 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 104 EP 110 DI 10.1115/1.2906291 PG 7 WC Engineering, Mechanical SC Engineering GA HP743 UT WOS:A1992HP74300015 ER EF