FN Thomson Reuters Web of Science™ VR 1.0 PT J AU KUHN, JJ BROOK, I WATERS, CL CHURCH, LWP BIANCHI, DA THOMPSON, DH AF KUHN, JJ BROOK, I WATERS, CL CHURCH, LWP BIANCHI, DA THOMPSON, DH TI QUANTITATIVE BACTERIOLOGY OF TONSILS REMOVED FROM CHILDREN WITH TONSILLITIS HYPERTROPHY AND RECURRENT TONSILLITIS WITH AND WITHOUT HYPERTROPHY SO ANNALS OF OTOLOGY RHINOLOGY AND LARYNGOLOGY LA English DT Article DE ANAEROBIC BACTERIA; HAEMOPHILUS INFLUENZAE; HYPERTROPHY; STAPHYLOCOCCUS AUREUS; TONSILLITIS ID UPPER AIRWAY-OBSTRUCTION; BETA-LACTAMASE; ADENOTONSILLAR HYPERTROPHY; SLEEP DISTURBANCE; TONSILLECTOMY; MICROBIOLOGY; SURFACE; ADENOIDECTOMY; BACTEROIDES; CORE AB The aerobic and anaerobic bacterial species and their numbers were studied in tonsillar specimens from children who had undergone elective tonsillectomy: 6 patients with recurrent tonsillitis (RTH), 9 with recurrent tonsillitis with hypertrophy (RTH), and 8 with obstructive tonsillar hypertrophy (OTH). Mixed flora were present in all tonsils, yielding an average of 6.7 isolates (5.6 aerobic or facultative and 1.1 anaerobic bacteria). The highest recovery rate of organisms per tonsil was in patients with OTH (7.7 per tonsil), compared to 6.3 per tonsil in RT and 5.9 per tonsil in RTH. The predominant aerobic and facultative organisms were Haemophilus influenzae (22 isolates), Neisseria sp (16), Staphylococcus aureus (14), and Eikenella corrodens (14), and the predominant anaerobic bacteria were Fusobacterium sp (8), Bacteroides sp (7), and Prevotella melaninogenica (5). The number of bacteria per gram of tonsillar tissue varied between 10(4) and 10(8). A higher concentration of S aureus and H influenzae was found in hypertrophic tonsils (RTH and OTH) as compared to RT. These findings suggest the presence of an increased bacterial load and supports an etiologic role for H influenzae and 5 aureus in hypertrophic tonsils with and without inflammation (RTH and OTH). Further studies to elucidate the effect of selective antimicrobial therapy directed at these organisms may offer an alternative management of hypertrophic tonsils. C1 USN HOSP,DEPT OTOLARYNGOL,BETHESDA,MD. USN HOSP,DEPT PEDIAT,BETHESDA,MD. USN HOSP,DEPT INFECT DIS,BETHESDA,MD. NR 41 TC 20 Z9 20 U1 0 U2 0 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 AUG PY 1995 VL 104 IS 8 BP 646 EP 652 PG 7 WC Otorhinolaryngology SC Otorhinolaryngology GA RP018 UT WOS:A1995RP01800010 PM 7639475 ER PT J AU Papoulias, FA Bateman, CA Ornek, S AF Papoulias, FA Bateman, CA Ornek, S TI Dynamic loss of stability in depth control of submersible vehicles SO APPLIED OCEAN RESEARCH LA English DT Article ID BIFURCATION; GUIDANCE AB Control of a modem submarine is a multi-dimensional dynamical problem coupling considerations of initial static stability, hydrodynamic performance, and control system response. In this work, the loss of stability at moderate-to-high speeds is examined using a nonlinear Hopf bifurcation analysis. Complete linear state feedback is used for demonstration purposes for depth control at level attitude and for a fixed nominal speed. The control time constant, the nominal and actual speeds, the metacentric height, and the stem-to-bow-plane ratio are used as the main bifurcation parameters. A complete local bifurcation mapping provides a systematic method for evaluating the bounds of controllability for the control system design parameters for a vehicle with a given set of hydrodynamic coefficients. The submarine and its potential design modifications are verified with direct numerical simulations. RP Papoulias, FA (reprint author), USN,POSTGRAD SCH,DEPT MECH ENGN,MONTEREY,CA 93943, USA. NR 20 TC 5 Z9 5 U1 0 U2 1 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB SN 0141-1187 J9 APPL OCEAN RES JI Appl. Ocean Res. PD AUG PY 1995 VL 17 IS 4 BP 205 EP 216 DI 10.1016/0141-1187(95)00009-7 PG 12 WC Engineering, Ocean; Oceanography SC Engineering; Oceanography GA UB715 UT WOS:A1995UB71500001 ER PT J AU ROSENBERG, SI SILVERSTEIN, H HOFFER, M NICHOLS, M AF ROSENBERG, SI SILVERSTEIN, H HOFFER, M NICHOLS, M TI USE OF ENDOSCOPES FOR CHRONIC EAR SURGERY IN CHILDREN SO ARCHIVES OF OTOLARYNGOLOGY-HEAD & NECK SURGERY LA English DT Article ID CHOLESTEATOMA AB Objective: To determine whether an endoscopic second-look examination of the mastoid and middle ear could replace an open second-look mastoidectomy. Design: Patients were examined endoscopically. The findings were compared with a standard open mastoidectomy procedure during the same operation. The mastoid can be inspected through a small postauricular incision and the middle ear can be inspected through a myringotomy incision or tympanomeatal flap. Patients: Ten patients aged 6 to 16 years. Results: Endoscopic findings correlated exactly with open mastoidectomy findings in all cases. Conclusion: In light of this study an open second-look mastoidectomy may be avoided if minimal or no recurrent cholesteatoma is found during the endoscopic exploration. The use of the ridged endoscope has added another dimension to the standard microsurgical techiques used in pediatric otology. The indications, techniques, and findings of otoendoscopy in the management of chronic otitis media in children will be presented. C1 UNIV PENN,DEPT OTOLARYNGOL,PHILADELPHIA,PA 19104. UNIV S FLORIDA,DEPT OTOLARYNGOL,TAMPA,FL 33620. USN HOSP,SAN DIEGO,CA 92134. RP ROSENBERG, SI (reprint author), EAR RES FDN,1921 FLOYD ST,SARASOTA,FL 34239, USA. NR 9 TC 32 Z9 33 U1 0 U2 2 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 AUG PY 1995 VL 121 IS 8 BP 870 EP 872 PG 3 WC Otorhinolaryngology; Surgery SC Otorhinolaryngology; Surgery GA RN512 UT WOS:A1995RN51200007 PM 7619412 ER PT J AU JOHNSTON, KJ FEY, AL ZACHARIAS, N RUSSELL, JL MA, CP DEVEGT, C REYNOLDS, JE JAUNCEY, DL ARCHINAL, BA CARTER, MS CORBIN, TE EUBANKS, TM FLORKOWSKI, DR HALL, DM MCCARTHY, DD MCCULLOCH, PM KING, EA NICOLSON, G SHAFFER, DB AF JOHNSTON, KJ FEY, AL ZACHARIAS, N RUSSELL, JL MA, CP DEVEGT, C REYNOLDS, JE JAUNCEY, DL ARCHINAL, BA CARTER, MS CORBIN, TE EUBANKS, TM FLORKOWSKI, DR HALL, DM MCCARTHY, DD MCCULLOCH, PM KING, EA NICOLSON, G SHAFFER, DB TI A RADIO REFERENCE FRAME SO ASTRONOMICAL JOURNAL LA English DT Article ID OPTICAL REFERENCE FRAME; LONG BASELINE INTERFEROMETRY; MARK-III VLBI; SOURCE POSITIONS; SOUTHERN-HEMISPHERE; LINE INTERFEROMETRY; ADDITIONAL RADIO; NORTHERN-HEMISPHERE; OHIO SURVEY; 5 GHZ AB A catalogue is presented based on the radio positions of 436 extragalactic sources distributed over the entire sky. The positional accuracy of the sources is better than 3 milliarcsec (mas) in both coordinates, with the majority of the sources having errors better than 1 mas. This catalogue is based upon a general solution of all applicable dual frequency 2.3 and 8.3 GHz Mark-m VLBI data available through the end of 1993 consisting of 1,015,292 pairs of group delay and phase delay rate observations. Details and positions are also given for an additional 124 objects that either need further observation or are currently unsuitable for the definition of a reference frame. The final orientation of the catalogue has been obtained by a rotation of the positions into the system of the International Earth Rotation Service and is consistent with the FK5 J2000.0 optical system, within the limits of the link accuracy. (C) 1995 American Astronomical Society. C1 USN OBSERV,WASHINGTON,DC 20392. UNIV SPACE RES ASSOC,WASHINGTON,DC 20024. APPL RES CORP,LANDOVER,MD 20785. NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. UNIV HAMBURG,HAMBURGER STERNWARTE,HAMBURG,GERMANY. CSIRO,AUSTRALIA TELESCOPE NATL FACIL,EPPING,NSW 2121,AUSTRALIA. UNIV TASMANIA,HOBART,TAS 7001,AUSTRALIA. RADIOMETR INC,HENDERSON,NV 89014. RP JOHNSTON, KJ (reprint author), USN,RES LAB,DIV REMOTE SENSING,CODE 7200,WASHINGTON,DC 20375, USA. RI Ma, Chopo/D-4751-2012; King, Edward/A-1473-2012; OI King, Edward/0000-0002-6898-2130; Eubanks, Thomas Marshall/0000-0001-9543-0414 NR 81 TC 122 Z9 122 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0004-6256 J9 ASTRON J JI Astron. J. PD AUG PY 1995 VL 110 IS 2 BP 880 EP 915 DI 10.1086/117571 PG 36 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA RL500 UT WOS:A1995RL50000037 ER PT J AU SCHLICKEISER, R DERMER, CD AF SCHLICKEISER, R DERMER, CD TI METHOD FOR ORGANIZING THE MULTIWAVELENGTH DATA OF RADIO-LOUD ACTIVE GALACTIC NUCLEI SO ASTRONOMY & ASTROPHYSICS LA English DT Letter DE ACTIVE GALACTIC NUCLEI; GAMMA-RAYS; VLBI; COSMOLOGY ID QUASARS; BLAZARS AB The broadband emission observed from radio galaxies, BL Lac objects and quasars is thought to be produced by energetic electrons confined in plasma blobs which are ejected from supermassive black holes at relativistic speeds. The lower energy radio-through-optical component is almost certainly nonthermal electron synchrotron radiation, while the higher-energy gamma-ray component is probably due to Compton scattering of target photons by these same electrons. If the high-energy component is formed by jet electrons Compton-scattering radiation from outside the jet, such as the direct or rescattered accretion-disk photons, then the ratio of the power in the high-energy Compton component to the power in the low-energy synchrotron component stands in a simple relation depending on the observing angle to the jet and the plasma outflow speed. When combined with contemporaneous VLBI measurements of apparent transverse speed, we find that a simple diagram relates different classes of radio-loud active galactic nuclei (AGNs) and makes definite predictions for multiwavelength observations of these sources. If an equipartition parameter remains constant between episodes of plasma ejection, then multiple observations of a single source can in principle determine the Hubble constant. C1 USN, RES LAB, EO HULBURT CTR SPACE RES, WASHINGTON, DC 20375 USA. RP SCHLICKEISER, R (reprint author), MAX PLANCK INST RADIOASTRON, POSTFACH 2024, D-53010 BONN, GERMANY. NR 39 TC 5 Z9 5 U1 0 U2 0 PU EDP SCIENCES S A PI LES ULIS CEDEX A PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE SN 0004-6361 J9 ASTRON ASTROPHYS JI Astron. Astrophys. PD AUG PY 1995 VL 300 IS 2 BP L29 EP L32 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA RQ396 UT WOS:A1995RQ39600002 ER PT J AU SATYAPAL, S WATSON, DM PIPHER, JL FORREST, WJ COPPENBARGER, D RAINES, SN LIBONATE, S PICHE, F AF SATYAPAL, S WATSON, DM PIPHER, JL FORREST, WJ COPPENBARGER, D RAINES, SN LIBONATE, S PICHE, F TI HIGH-SPATIAL-RESOLUTION FABRY-PEROT IMAGING OF M82 - NEAR-INFRARED RECOMBINATION LINE OBSERVATIONS SO ASTROPHYSICAL JOURNAL LA English DT Article DE GALAXIES, INDIVIDUAL (M82) GALAXIES, ISM; GALAXIES, NUCLEI; INFRARED, GALAXIES INFRARED, ISM, LINES AND BANDS ID INITIAL MASS FUNCTION; STARBURST GALAXIES; MOLECULAR GAS; H-I; EMISSION; NGC-7027; NEBULAE; REGION; IMAGES; STARS AB We present high spatial resolution (similar to 1 '') and moderate spectral resolution (gamma 2/Delta gamma similar or equal to 800) Pa beta and Br gamma Fabry-Perot imaging observations of the central kiloparsec of M82. These observations, in conjunction with new near-infrared broadband imaging observations, are used to examine the extinction toward the starburst region, the state of the ionized gas, and the nature of the stellar population. Enhancements in the extinction-sensitive Pa beta/Br gamma flux ratio are found to trace out the molecular lobes seen in CO, supporting the assumption that we are observing a dense torus surrounding the central stellar clusters and H II regions. Using a nonuniform foreground screen model for the Pa beta/Br gamma flux ratio, the derived extinction toward the starburst region is found to vary from A(V) similar or equal to 2 to A(V) similar or equal to 12 mag, significantly smaller than is adopted in most other studies of the stellar population in the starburst region of M82. The extinction-corrected K-magnitude in a 30 '' aperture centered on the nucleus is found to be M(K) = -22.0. This is substantially fainter than previous values adopted, amounting to as much as a reduction of a factor of similar to 3 in the intrinsic K luminosity, a difference that substantially weakens the arguments made previously for a low mass-deficient IMF for the starburst region of M82. Our recombination line images were used to estimate separately the contribution to the near-infrared continuum bandpasses from free-free and free-bound processes and the emission from dust. These sources of emission do not contribute appreciably to the total near-infrared continuum and thus it can confidently be assumed that this emission is dominated by starlight. In addition, we present narrow-band imaging observations of M82 in the 3.29 mu m unidentified dust feature. The emission is seen to be well-correlated with the Br gamma emission. The ratio of the extinction-corrected 3.29 mu m dust feature flux to extinction-corrected Br gamma flux is found to vary from 4.5 to 15 throughout most of the starburst region, with values greater than 35 near the dynamical center of the galaxy. This variation, along with other star formation diagnostics, suggests that the nucleus contains a later-type stellar population and the starburst phenomena is propagating outward. The ratio of the total far-infrared luminosity to the dereddened 3.29 mu m feature luminosity is found to be 1340 +/- 260 for M82, significantly smaller than the ratio obtained using the uncorrected 3.29 mu m feature flux (1690 +/- 200). C1 UNIV ROCHESTER, CEK MEES OBSERV, ROCHESTER, NY 14627 USA. SMITHSONIAN INST, NATL AIR & SPACE MUSEUM, ASTROPHYS LAB, WASHINGTON, DC 20560 USA. USN, RES LAB, DIV REMOTE SENSING, WASHINGTON, DC 20375 USA. UNIV WYOMING, DEPT PHYS & ASTRON, LARAMIE, WY 82071 USA. UNIV WYOMING, WYOMING INFRARED OBSERV, LARAMIE, WY 82071 USA. RP SATYAPAL, S (reprint author), UNIV ROCHESTER, DEPT PHYS & ASTRON, ROCHESTER, NY 14627 USA. NR 40 TC 52 Z9 52 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD AUG 1 PY 1995 VL 448 IS 2 BP 611 EP 622 DI 10.1086/175990 PN 1 PG 12 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA RK722 UT WOS:A1995RK72200014 ER PT J AU ALAPATY, K RAMAN, S MOHANTY, UC MADALA, RV AF ALAPATY, K RAMAN, S MOHANTY, UC MADALA, RV TI SENSITIVITY OF MONSOON CIRCULATIONS TO CHANGES IN SEA-SURFACE TEMPERATURES SO ATMOSPHERIC ENVIRONMENT LA English DT Article; Proceedings Paper CT International Conference on Sustainable Development Strategies and Global/Regional/Local Impacts on Atmospheric Composition and Climate CY JAN 25-30, 1993 CL INDIAN INST TECHNOL, DELHI, INDIA SP Indo US Sub Commiss Sci & Technol, Govt India, Dept Sci & Technol, Indian Inst Technol, Delhi HO INDIAN INST TECHNOL DE MONSOON; SEA SURFACE TEMPERATURE; RAINFALL; ANOMALIES ID ARABIAN-SEA; MODE INITIALIZATION; SUMMER MONSOON; INDIAN-OCEAN; CONVECTION; LAYER; FLOW AB Sensitivity of a regional scale model to different sea surface temperatures (SSTs) in the context of short-range prediction of monsoon rainfall is studied using a three dimensional regional scale model. For the month of July, over certain regions of Arabian Sea, Bay of Bengal and the Indian Ocean, observed SSTs are about 1 to 2 degrees C warmer than the climatological SSTs. Two numerical experiments are performed using observed and climatological SSTs for an active monsoon period. It is found that the evaporation increases over these surrounding oceans when the observed SSTs are used. As expected, warmer SSTs caused the surface pressure to decrease by 2 to 3 hPa leading to local accelerations of winds. As a result, stronger circulation patterns are induced. Area-averaged evaporation is about 20% higher and the rainfall 10% higher when observed SSTs are used. Effect of an uniform increase in SST by 2 degrees C over climatological values is also investigated. Comparison of simulations with the climatic and the uniformly increased SSTs indicated that the rainfall predictions are qualitatively similar to those obtained with the observed SSTs. Area-averaged evaporation is about 40% higher and the rainfall 15% higher than those obtained with the climatic SSTs. Results from these three numerical experiments indicate that the short-range prediction of monsoon weather is sensitive to the sea surface temperature distribution. This is mainly because of variations in mesoscale circulations caused by the local gradients in the SSTs. C1 INDIAN INST TECHNOL,CTR ATMOSPHER SCI,NEW DELHI 110016,INDIA. USN,RES LAB,WASHINGTON,DC 20375. RP ALAPATY, K (reprint author), N CAROLINA STATE UNIV,DEPT MARINE EARTH & ATMOSPHER SCI,BOX 8208,RALEIGH,NC 27695, USA. NR 31 TC 5 Z9 5 U1 1 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 1352-2310 J9 ATMOS ENVIRON JI Atmos. Environ. PD AUG PY 1995 VL 29 IS 16 BP 2139 EP 2156 DI 10.1016/1352-2310(94)00141-7 PG 18 WC Environmental Sciences; Meteorology & Atmospheric Sciences SC Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences GA RT641 UT WOS:A1995RT64100021 ER PT J AU KAMINER, I PASCOAL, AM KHARGONEKAR, PP COLEMAN, EE AF KAMINER, I PASCOAL, AM KHARGONEKAR, PP COLEMAN, EE TI A VELOCITY ALGORITHM FOR THE IMPLEMENTATION OF GAIN-SCHEDULED CONTROLLERS SO AUTOMATICA LA English DT Note DE NONLINEAR CONTROL; GAIN SCHEDULING; ROBUST CONTROL; CONTROLLER IMPLEMENTATION ID NONLINEAR-SYSTEMS; LINEARIZATION; PLANTS AB A new method is proposed to implement gain-scheduled controllers for nonlinear plants. Given a family of linear feedback controllers designed for linearizations of a nonlinear plant about constant operating points, a nonlinear gain-scheduled controller is derived that preserves the input-output properties of the linear closed loop systems locally, about each equilibrium point. The key procedures in the proposed method are to provide integral action at the inputs to the plant and differentiate some of the measured outputs before they are fed back to the scheduled controller. For a fairly general class of systems, the nonlinear gain-scheduled controllers are easy to obtain, and their structure is similar to that of the original linear controllers. C1 UNIV MICHIGAN,DEPT ELECT ENGN & COMP SCI,ANN ARBOR,MI 48109. USN,POSTGRAD SCH,DEPT AERONAUT & ASTRONAUT ENGN,MONTEREY,CA 93943. INST SUPER TECN,ISR,P-1096 LISBON,PORTUGAL. INST SUPER TECN,DEPT ELECT ENGN,P-1096 LISBON,PORTUGAL. BOEING CO,SEATTLE,WA 98124. OI Khargonekar, Pramod/0000-0001-6634-6950; PASCOAL, ANTONIO /0000-0002-0657-6671 NR 22 TC 99 Z9 100 U1 1 U2 7 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0005-1098 J9 AUTOMATICA JI Automatica PD AUG PY 1995 VL 31 IS 8 BP 1185 EP 1191 DI 10.1016/0005-1098(95)00026-S PG 7 WC Automation & Control Systems; Engineering, Electrical & Electronic SC Automation & Control Systems; Engineering GA RM382 UT WOS:A1995RM38200010 ER PT J AU ELSMORE, TF HEGGE, FW NAITOH, P KELLY, T RYMAN, D AF ELSMORE, TF HEGGE, FW NAITOH, P KELLY, T RYMAN, D TI WINCD - WINDOWS SOFTWARE FOR COMPLEX DEMODULATION SO CHRONOBIOLOGY INTERNATIONAL LA English DT Article DE COMPLEX DEMODULATION; TIME SERIES ANALYSIS; CIRCADIAN RHYTHMS; ULTRADIAN RHYTHMS AB We describe WinCD, a program for extracting quantitative information about periodicity in time-series data using the method of complex demodulation (CD). The method is particularly well suited for the analysis of the effects of variables that may produce changes in biological rhythms, such as sleep deprivation, adaptation to changes in work schedules, time zone displacements, and various sorts of pathology. WinCD enables exploratory analysis of time series data by providing graphical displays of raw and processed time series, as well as numerous options for viewing and saving quantitative data. We describe WinCD operations and examples of the use of the program. C1 WALTER REED ARMY MED CTR,WALTER REED ARMY INST RES,WASHINGTON,DC 20307. USN,HLTH RES CTR,SAN DIEGO,CA 92152. NR 12 TC 4 Z9 4 U1 0 U2 0 PU MARCEL DEKKER INC PI NEW YORK PA 270 MADISON AVE, NEW YORK, NY 10016 SN 0742-0528 J9 CHRONOBIOL INT JI Chronobiol. Int. PD AUG PY 1995 VL 12 IS 4 BP 248 EP 256 DI 10.3109/07420529509057273 PG 9 WC Biology; Physiology SC Life Sciences & Biomedicine - Other Topics; Physiology GA RZ401 UT WOS:A1995RZ40100003 ER PT J AU WONG, MT DOLAN, MJ LATTUADA, CP REGNERY, RL GARCIA, ML MOKULIS, EC LABARRE, RC ASCHER, DP DELMAR, JA KELLY, JW LEIGH, DR MCRAE, AC REED, JB SMITH, RE MELCHER, GP AF WONG, MT DOLAN, MJ LATTUADA, CP REGNERY, RL GARCIA, ML MOKULIS, EC LABARRE, RC ASCHER, DP DELMAR, JA KELLY, JW LEIGH, DR MCRAE, AC REED, JB SMITH, RE MELCHER, GP TI NEURORETINITIS, ASEPTIC-MENINGITIS, AND LYMPHADENITIS ASSOCIATED WITH BARTONELLA (ROCHALIMAEA) HENSELAE INFECTION IN IMMUNOCOMPETENT PATIENTS AND PATIENTS INFECTED WITH HUMAN-IMMUNODEFICIENCY-VIRUS TYPE-1 SO CLINICAL INFECTIOUS DISEASES LA English DT Article ID CAT-SCRATCH DISEASE; BACILLARY ANGIOMATOSIS; THERAPY; FEVER AB Bartonella (Rochalimaea) henselae causes a variety of diseases, including bacillary angiomatosis, peliosis hepatis, lymphadenitis, aseptic meningitis with bacteremia, and cat-scratch disease (CSD). Cases of B. henselae-related disease were collected from September 1991 through November 1993. Patients with suspected CSD, unexplained fever and lymphadenitis, or suspected B. henselae infection who were seen in the Infectious Diseases Clinic at Wilford Hall Medical Center (Lackland Air Force Base, TX) underwent physical and laboratory examinations. In addition to three previously described cases, 23 patients with R. henselae-related infection were identified. The patients included 19 immunocompetent individuals presenting with lymphadenitis (11), stellate neuroretinitis (5), Parinaud's oculoglandular syndrome with retinitis (1), chronic fatigue syndrome-like disease (1), and microbiologically proven adenitis without the presence of immunofluorescent antibodies to B, henselae (1) and four patients infected with human immunodeficiency virus type 1 presenting with isolated lymphadenitis (1), diffuse upper-extremity adenitis (1), neuroretinitis (1), and aseptic meningitis (1), A couple with neuroretinitis and their pet cat, a persistently fatigued patient, and a patient with Parinaud's oculoglandular syndrome were shown to have bacteremia, Tissue cultures were positive for B. henselae in three recent cases of adenitis, Twenty-two patients were exposed to cats, This series further demonstrates the similarities between B. henselae-related diseases and CSD and identifies several new syndromes due to B. henselae. C1 WILFORD HALL USAF MED CTR,DEPT INFECT DIS,PSMI,LACKLAND AFB,TX 78236. WILFORD HALL USAF MED CTR,DEPT OPHTHALMOL,LACKLAND AFB,TX 78236. WILFORD HALL USAF MED CTR,DEPT PEDIAT,LACKLAND AFB,TX 78236. BROOKE ARMY MED CTR,FT SAM HOUSTON,TX 78234. FRANCIS SCOTT KEY MED CTR,INFECT DIS SECT,SCOTT AFB,MO. SAN DIEGO NAVAL AIR STN,SAN DIEGO NAVAL HOSP,SAN DIEGO,CA. KEESLER MED CTR,DEPT INTERNAL MED,KEESLER AFB,MS. CTR DIS CONTROL & PREVENT,VIRAL & RICKETTSIAL ZOONOSES BRANCH,ATLANTA,GA 30341. NR 27 TC 103 Z9 105 U1 2 U2 4 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 AUG PY 1995 VL 21 IS 2 BP 352 EP 360 PG 9 WC Immunology; Infectious Diseases; Microbiology SC Immunology; Infectious Diseases; Microbiology GA RM817 UT WOS:A1995RM81700015 PM 8562744 ER PT J AU LEWIS, T AF LEWIS, T TI WINDOWS-95 - NEXT STEP TO DESK-TOP NT SO COMPUTER LA English DT Editorial Material RP LEWIS, T (reprint author), USN,POSTGRADUATE SCH,CODE CS,MONTEREY,CA 93943, 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 0018-9162 J9 COMPUTER JI Computer PD AUG PY 1995 VL 28 IS 8 BP 8 EP 9 DI 10.1109/2.410133 PG 2 WC Computer Science, Hardware & Architecture; Computer Science, Software Engineering SC Computer Science GA RM692 UT WOS:A1995RM69200003 ER PT J AU LEWIS, T POWER, D MEYER, B GRIMES, J POTEL, M VETTER, R LAPLANTE, P PREE, W POMBERGER, G HILL, M LARUS, J WOOD, D ELREWINI, H WEIDE, BW AF LEWIS, T POWER, D MEYER, B GRIMES, J POTEL, M VETTER, R LAPLANTE, P PREE, W POMBERGER, G HILL, M LARUS, J WOOD, D ELREWINI, H WEIDE, BW TI WHERE IS SOFTWARE HEADED - A VIRTUAL ROUND-TABLE SO COMPUTER LA English DT Discussion AB To find out where software is headed, we took to the Internet, asking experts in academia and industry to share their vision as to the future of software. For this ''virtual'' roundtable, we've assembled a selection of responses, on topics ranging from object technology, networked computing, software engineering, parallel computing, and software design in the undergraduate curriculum. If the topics are varied, these experts' views on the future of software are not. We were struck by the polarization within the software community as a whole. Software is in the midst of a revolution or a crisis; software professionals seem wildly optimistic or extremely pessimistic. To people in industry, software is racing toward a bright future made possible by object-oriented technology and client-server computing. To academics, things are moving too slowly and in the wrong direction-incremental changes are being made to an installed base that is itself inherently flawed. Whether you're in academia or industry, you'll find these brief descriptions interesting and thought provoking. C1 SUNSOFT,CHELMSFORD,MA 01824. ISE INC,SANTA BARBARA,CA. TALIGENT,CUPERTINO,CA 95014. N DAKOTA STATE UNIV,DEPT COMP SCI,FARGO,ND 58105. BURLINGTON CTY COLL,MT LAUREL,NJ 08054. NEW JERSEY INST TECHNOL,CTR TECHNOL & ENGN,MT LAUREL,NJ 08054. JOHANNES KEPLER UNIV,C DOPPLER LAB SOFTWARE ENGN,A-4040 LINZ,AUSTRIA. UNIV WISCONSIN,DEPT COMP SCI,MADISON,WI 53706. UNIV WISCONSIN,DEPT ELECTR & COMP ENGN,MADISON,WI 53706. UNIV NEBRASKA,OMAHA,NE 68182. OHIO STATE UNIV,COLUMBUS,OH 43210. RP LEWIS, T (reprint author), USN,POSTGRAD SCH,WASHINGTON,DC 20350, USA. RI Meyer, Bertrand/E-4543-2010 OI Meyer, Bertrand/0000-0002-5985-7434 NR 0 TC 1 Z9 1 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 0018-9162 J9 COMPUTER JI Computer PD AUG PY 1995 VL 28 IS 8 BP 20 EP 22 DI 10.1109/2.402054 PG 3 WC Computer Science, Hardware & Architecture; Computer Science, Software Engineering SC Computer Science GA RM692 UT WOS:A1995RM69200005 ER PT J AU BHARGAVA, HK BRANLEY, WC AF BHARGAVA, HK BRANLEY, WC TI SIMULATING BELIEF SYSTEMS OF AUTONOMOUS AGENTS SO DECISION SUPPORT SYSTEMS LA English DT Article DE BELIEF SIMULATION; BELIEF GENERATION; AUTONOMOUS AGENT; DISTRIBUTED INTERACTIVE SIMULATION; BELIEF REVISION; DEFEASIBLE REASONING AB Autonomous agents in computer simulations do not have the usual mechanisms to acquire information as do their human counterparts. In many such simulations, it is not desirable that the agent have access to complete and correct information about its environment. We examine how imperfection in available information may be simulated in the case of autonomous agents. We determine probabilistically what the agent may detect, through hypothetical sensors, in a given situation. These detections are combined with the agent's knowledge base to infer observations and beliefs. Inherent: in this task is a degree of uncertainty in choosing the most appropriate observation or belief. We describe and compare two approaches -a numerical approach and one based on defeasible logic -for simulating an appropriate belief in light of conflicting detection values at a given point in time. We discuss the application of this technique to autonomous forces in combat simulation systems. C1 USA,CTR AI,WASHINGTON,DC 20310. RP BHARGAVA, HK (reprint author), USN,POSTGRAD SCH,CODE AS BH,555 DYER RD,ROOM 214,MONTEREY,CA 93943, USA. NR 17 TC 5 Z9 5 U1 0 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0167-9236 J9 DECIS SUPPORT SYST JI Decis. Support Syst. PD AUG PY 1995 VL 14 IS 4 BP 329 EP 348 DI 10.1016/0167-9236(94)00036-R PG 20 WC Computer Science, Artificial Intelligence; Computer Science, Information Systems; Operations Research & Management Science SC Computer Science; Operations Research & Management Science GA RR632 UT WOS:A1995RR63200003 ER PT J AU COHEN, ME RODDY, WC AF COHEN, ME RODDY, WC TI A COMPARISON OF 3 STATISTICS FOR DETECTING DIFFERENCES IN DIGITIZED DENTAL RADIOGRAPHS - SIMULATION STUDY SO DENTOMAXILLOFACIAL RADIOLOGY LA English DT Article DE RADIOGRAPHY, DENTAL; IMAGE PROCESSING, COMPUTER-ASSISTED AB Objectives. Because of methodology-induced structural differences in dental radiographs, determination of change has always depended upon expert interpretation. However, new methods should be able to considerably reduce structured error in digitized subtracted images. Once true change in density is obscured only by random variation in pixel density, statistical methods may be brought to bear on the problem of detecting change. The most appropriate statistic is not obvious, however, since density change can be quantified with respect to both magnitude and dimensional extent. Whereas mean density loss is often intuitively defined as the average density of those pixels losing density (to preclude gaining pixels from offsetting losing pixels), the extent of change may be defined in a variety of ways. In this study, extent was defined as either (a) the total number of pixels losing density, or (b) the size of the largest cluster of losing pixels. The object was to evaluate the comparative statistical power of three possible statistics (based on mean density, number of losing pixels, and size of largest losing cluster) for detecting change. Methods. In a series of simulations of comparative clinical trials, density was reduced in the centre of 1600-pixel square regions of interest by either one or 10 grey-scale units, and t-tests, based on the three statistics, were then compared for their ability to detect differences. Results. Each of the three statistics was shown to exhibit superior relative power under particular conditions of loss magnitude, loss distribution, and pixel threshold for change. Conclusion. Selection of the appropriate statistic for identifying change between radiographs will require further information about the anticipated distribution of density changes for the different disease processes under investigation. RP COHEN, ME (reprint author), USN,DENT RES INST,BLDG 1-H,2701 SHERIDAN RD,GREAT LAKES,IL 60088, USA. NR 0 TC 2 Z9 2 U1 0 U2 0 PU BUTTERWORTH-HEINEMANN LTD PI OXFORD PA LINACRE HOUSE JORDAN HILL, OXFORD, OXON, ENGLAND OX2 8DP SN 0250-832X J9 DENTOMAXILLOFAC RAD JI Dentomaxillofac. Radiol. PD AUG PY 1995 VL 24 IS 3 BP 179 EP 184 PG 6 WC Dentistry, Oral Surgery & Medicine; Radiology, Nuclear Medicine & Medical Imaging SC Dentistry, Oral Surgery & Medicine; Radiology, Nuclear Medicine & Medical Imaging GA RM110 UT WOS:A1995RM11000007 PM 8617392 ER PT J AU DAVIS, TA WIESMANN, W KIDWELL, WR CANNON, T KERNS, L SERKE, C DELAPLAINE, T PRANGER, A LEE, KP AF DAVIS, TA WIESMANN, W KIDWELL, WR CANNON, T KERNS, L SERKE, C DELAPLAINE, T PRANGER, A LEE, KP TI EFFECT OF SPACE-FLIGHT ON CD34(+) CELL HEMATOPOIESIS - SUPPRESSION OF ERYTHROPOIESIS AND MYELOPOIESIS SO EXPERIMENTAL HEMATOLOGY LA English DT Meeting Abstract C1 USN,MED RES INST,BETHESDA,MD 20814. WALTER REED ARMY MED CTR,WALTER REED ARMY INST RES,WASHINGTON,DC 20307. CELLCO INC,GERMANTOWN,MD. NR 0 TC 0 Z9 0 U1 0 U2 0 PU CARDEN JENNINGS PUBL COLTD PI CHARLOTTESVILLE PA BLAKE CTR, STE 200, 1224 W MAIN ST, CHARLOTTESVILLE, VA 22903 SN 0301-472X J9 EXP HEMATOL JI Exp. Hematol. PD AUG PY 1995 VL 23 IS 8 BP 769 EP 769 PG 1 WC Hematology; Medicine, Research & Experimental SC Hematology; Research & Experimental Medicine GA RP116 UT WOS:A1995RP11600099 ER PT J AU EWING, CT FAITH, FR ROMANS, JB SIEGMANN, CW OUELLETTE, RJ HUGHES, JT EWING, HWC ROMANS, F AF EWING, CT FAITH, FR ROMANS, JB SIEGMANN, CW OUELLETTE, RJ HUGHES, JT EWING, HWC ROMANS, F TI EXTINGUISHING CLASS-A FIRES WITH MULTIPURPOSE CHEMICALS SO FIRE TECHNOLOGY LA English DT Article ID SINGLE AEROSOL-PARTICLES; DRAG AB We investigated the extinguishing properties of multipurpose dry chemicals using open-regime cribs of two sizes. One measured 20.3 by 20.3 by 15.2 cm, and the other 50.8 by 50.8 by 38 cm. A crib fire, which has both flaming and smoldering contributions, is primarily extinguished when the burning surfaces are covered or smothered by a gas phase of the original multipurpose agent or a product of the agent's decomposition. The overall effectiveness of each dry chemical depends on its particle size, the degree of its decomposition and/or vaporization, and the openness of the crib. All particles of an agent below a unique limiting size completely decompose and/or vaporize in the crib fire and have the same extinguishing effectiveness. Particles above the limit have no measurable effectiveness. Scaling is considered on the basis of the minimum extinction weight per unit of exposed wood surface. C1 USN,RES LAB,CTR SAFETY & SURVIVABIL,WASHINGTON,DC 20375. RP EWING, CT (reprint author), HUGHES ASSOCIATES,COLUMBIA,MD, USA. NR 17 TC 0 Z9 0 U1 2 U2 4 PU NATIONAL FIRE PROTECTION ASSOC PI QUINCY PA ONE BATTERYMARCH PK, QUINCY, MA 02269 SN 0015-2684 J9 FIRE TECHNOL JI Fire Technol. PD AUG PY 1995 VL 31 IS 3 BP 195 EP 211 DI 10.1007/BF01039191 PG 17 WC Engineering, Multidisciplinary; Materials Science, Multidisciplinary SC Engineering; Materials Science GA RU124 UT WOS:A1995RU12400002 ER PT J AU SCHEFFEY, JL DARWIN, RL LEONARD, JT AF SCHEFFEY, JL DARWIN, RL LEONARD, JT TI EVALUATING FIREFIGHTING FOAMS FOR AVIATION FIRE PROTECTION SO FIRE TECHNOLOGY LA English DT Article DE FOAM; AFFF; TEST STANDARDS; SMALL-SCALE FIRE TESTS; HYDROCARBON FUEL FIRES; AVIATION FIRE PROTECTION; AIRCRAFT RESCUE AND FIREFIGHTING; SPREADING COEFFICIENT; SURFACE TENSION AB The proliferation of performance guidelines and specifications for firefighting foams has created divergent opinions on aviation fire protection standards. In this paper the technical basis for current U.S. and international aviation guidelines is presented. Issues associated with small- and large-scale fire tests are discussed. The correlation between fire test methods in the U.S. Military Specification for aqueous film-forming foam (AFFF) and current aviation fire protection guidelines is established. Trends and areas for further development are outlined. C1 USN,SEA SYST COMMAND,WASHINGTON,DC 20350. USN,CTR SAFETY & SURVIVABIL,WASHINGTON,DC 20350. RP SCHEFFEY, JL (reprint author), HUGHES ASSOCIATES INC,BALTIMORE,MD, USA. NR 28 TC 6 Z9 6 U1 1 U2 6 PU NATIONAL FIRE PROTECTION ASSOC PI QUINCY PA ONE BATTERYMARCH PK, QUINCY, MA 02269 SN 0015-2684 J9 FIRE TECHNOL JI Fire Technol. PD AUG PY 1995 VL 31 IS 3 BP 224 EP 243 DI 10.1007/BF01039193 PG 20 WC Engineering, Multidisciplinary; Materials Science, Multidisciplinary SC Engineering; Materials Science GA RU124 UT WOS:A1995RU12400004 ER PT J AU ROCKWAY, J LOGAN, J AF ROCKWAY, J LOGAN, J TI ADVANCES IN MININEC SO IEEE ANTENNAS AND PROPAGATION MAGAZINE LA English DT Article AB A brief history of the development of MININEC is presented. Differences between MININEC and NEC are discussed. A new version, MININEC Professional Windows, is described, along with the application of this new version. RP ROCKWAY, J (reprint author), USN,CTR COMMAND CONTROL & OCEAN SURVEILLANCE,DIV RDT & E,NRAD 822,SAN DIEGO,CA 92110, USA. NR 11 TC 3 Z9 3 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 1045-9243 J9 IEEE ANTENNAS PROPAG JI IEEE Antennas Propag. Mag. PD AUG PY 1995 VL 37 IS 4 BP 7 EP 12 DI 10.1109/74.414724 PG 6 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA RV488 UT WOS:A1995RV48800003 ER PT J AU BABCOCK, JA CRESSLER, JD VEMPATI, LS CLARK, SD JAEGER, RC HARAME, DL AF BABCOCK, JA CRESSLER, JD VEMPATI, LS CLARK, SD JAEGER, RC HARAME, DL TI IONIZING-RADIATION TOLERANCE AND LOW-FREQUENCY NOISE DEGRADATION IN UHV/CVD SIGE HBTS SO IEEE ELECTRON DEVICE LETTERS LA English DT Article AB The effect of ionizing radiation on both the electrical and 1/f noise characteristics of advanced UHV/CVD SiGe HBT's is reported for the first time, Only minor degradation in the current-voltage characteristics of both SiGe HBT's and Si BJT's is observed after total radiation dose exposure of 2.0 Mrad(Si) of gamma-radiation. The observed immunity to ionizing radiation exposure suggests that these SiGe HBT's are well-suited for many applications requiring radiation tolerance, We have also observed the appearance of ionizing-radiation-induced generation-recombination (G/R) noise in some of these SiGe HBT's. C1 USN,CTR SURFACE WARFARE,CRANE,IN 47522. IBM CORP,DIV MICROELECTR,HOPEWELL JCT,NY 12533. RP BABCOCK, JA (reprint author), AUBURN UNIV,ALABAMA MICROELECTR SCI & TECHNOL CTR,DEPT ELECT ENGN,AUBURN,AL 36849, USA. NR 16 TC 17 Z9 17 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 0741-3106 J9 IEEE ELECTR DEVICE L JI IEEE Electron Device Lett. PD AUG PY 1995 VL 16 IS 8 BP 351 EP 353 DI 10.1109/55.400735 PG 3 WC Engineering, Electrical & Electronic SC Engineering GA RL037 UT WOS:A1995RL03700003 ER PT J AU BORDEN, BH AF BORDEN, BH TI ENHANCED RANGE PROFILES FOR RADAR-BASED TARGET CLASSIFICATION USING MONOPULSE TRACKING STATISTICS SO IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION LA English DT Article AB Small radar detection and tracking systems, in particular radar guided missile systems, are of great utility because of their all-weather performance and their long range capabilities, A major drawback with these systems results from the relatively simple data that they collect and the difficulty in using these data for target classification and identification purposes, We examine a technique which employs the statistics of the tracking data used by many missile seekers and which creates a cross-range target structure map that can be expressed as a function of the target's down-range extent. These data consist of ordinary azimuth-elevation angle of-arrival measurements collected from a small set of (unknown) aspects presented by the target as it maneuvers, The method requires a minimal computational burden and may hold the potential to be used for automatic (machine-based) target classification in realistic (time and data limited) environments. RP BORDEN, BH (reprint author), USN,CTR AIR WARFARE,RES DEPT,DIV WEAPONS,CHINA LAKE,CA 93555, USA. NR 18 TC 3 Z9 3 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 0018-926X J9 IEEE T ANTENN PROPAG JI IEEE Trans. Antennas Propag. PD AUG PY 1995 VL 43 IS 8 BP 759 EP 765 DI 10.1109/8.402193 PG 7 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA RP260 UT WOS:A1995RP26000001 ER PT J AU JENN, DC LEE, S AF JENN, DC LEE, S TI INBAND SCATTERING FROM ARRAYS WITH SERIES FEED NETWORKS SO IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION LA English DT Article AB Approximate equations are presented for the radar cross section (RCS) of a phased array antenna with a series feed beamforming network, The incident radar wave is assumed to be at the same frequency as the antenna operating frequency. In deriving the RCS formulas, multiple reflections are neglected, and like devices in the feed are assumed to have identical transmission and reflection coefficients. The approximate results are shown to be in excellent agreement with results obtained using a scattering matrix approach. The behavior of the RCS as a function of several feed design parameters is also investigated. RP JENN, DC (reprint author), USN,POSTGRAD SCH,DEPT ELECT & COMP ENGN,MONTEREY,CA 93943, USA. NR 8 TC 7 Z9 7 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 0018-926X J9 IEEE T ANTENN PROPAG JI IEEE Trans. Antennas Propag. PD AUG PY 1995 VL 43 IS 8 BP 867 EP 873 DI 10.1109/8.402207 PG 7 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA RP260 UT WOS:A1995RP26000014 ER PT J AU BLAIR, WD CONTE, JE RICE, TR AF BLAIR, WD CONTE, JE RICE, TR TI AN INSTRUCTIVE EXAMPLE OF HOMOMORPHIC SIGNAL-PROCESSING SO IEEE TRANSACTIONS ON EDUCATION LA English DT Article AB In this paper, a specific application of cepstral processing is considered to illustrate homomorphic signal processing, In particular, an analytic expression is derived for the frequency domain representation of a signal that has been recovered from a multi-path signal with cepstral processing, The multi-path signal is composed of time-delayed, scaled versions of the transmitted signal, and the transmitted signal is to be recovered, The recovered signal is expressed analytically in the frequency domain, By truncating an infinite series, the recovered signal can be expressed in the time domain, The analytic expressions can be used to predict the distortion that will result in the recovered signal when the cepstral processing is implemented with Discrete Fourier Transforms (DFTs), The analytic expression of a recovered signal is compared with the signal recovered with DFTs, The signal recovery from a multi-path signal that is composed of the transmitted signal and an amplified version of the transmitted signal is discussed and considered in two examples, The examples also demonstrate the scaling of nomninimum phase signals to minimum phase signals. RP BLAIR, WD (reprint author), USN,CTR SURFACE WARFARE,DEPT SYST RES & TECHNOL,DAHLGREN,VA 22448, USA. NR 5 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 0018-9359 J9 IEEE T EDUC JI IEEE Trans. Educ. PD AUG PY 1995 VL 38 IS 3 BP 211 EP 216 DI 10.1109/13.406496 PG 6 WC Education, Scientific Disciplines; Engineering, Electrical & Electronic SC Education & Educational Research; Engineering GA RR683 UT WOS:A1995RR68300003 ER PT J AU JONES, JR TAIT, GB JONES, SH KATZER, DS AF JONES, JR TAIT, GB JONES, SH KATZER, DS TI DC AND LARGE-SIGNAL TIME-DEPENDENT ELECTRON-TRANSPORT IN HETEROSTRUCTURE DEVICES - AN INVESTIGATION OF THE HETEROSTRUCTURE BARRIER VARACTOR SO IEEE TRANSACTIONS ON ELECTRON DEVICES LA English DT Article ID RAY PHOTOEMISSION SPECTROSCOPY; HETEROJUNCTION BAND OFFSETS; SUBMILLIMETER-WAVE POWER; MILLIMETER-WAVE; CYCLOTRON-RESONANCE; MATERIAL PARAMETERS; NUMERICAL-ANALYSIS; BOUNDARY-CONDITION; INP; DIODES AB The dc and large-signal time-dependent electron transport properties of Heterostructure Barrier Varactors (HBVs) are investigated using a physical model which combines drift-diffusion current transport through the heterostructure bulk with thermionic and thermionic-field emission currents imposed at the abrupt heterointerfaces in a fully self-consistent manner. A fast and accurate hydrodynamic device simulator for generic unipolar InGaAs/InAlAs on InP, InGaAs/InP on InP, and GaAs/InGaAs/AlGaAs on GaAs HBVs has been developed based on this model. The experimentally observed current-voltage and capacitance-voltage characteristics of GaAs/AlGaAs and GaAs/InGaAs/AlGaAs HBVs are compared with the simulated results over a wide range of de bias. Large-signal time dependent simulations at a pump frequency of 100 GHz confirm the odd-harmonic operation of these devices and indicate that multiple barrier HBVs should provide efficient frequency multiplication, especially in high order frequency multipliers, broadband frequency triplers, and quasi-optical tripler arrays. C1 US MIL ACAD,DEPT ELECT ENGN & COMP SCI,W POINT,NY 10996. USN,RES LAB,DIV ELECTR SCI & TECHNOL,WASHINGTON,DC 20375. RP JONES, JR (reprint author), UNIV VIRGINIA,DEPT ELECT ENGN,CHARLOTTESVILLE,VA 22903, USA. RI Katzer, D. Scott/N-7841-2013 NR 48 TC 18 Z9 18 U1 1 U2 3 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 AUG PY 1995 VL 42 IS 8 BP 1393 EP 1403 DI 10.1109/16.398654 PG 11 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA RJ150 UT WOS:A1995RJ15000001 ER PT J AU WEBER, W BROX, M THEWES, R SAKS, NS AF WEBER, W BROX, M THEWES, R SAKS, NS TI HOT-HOLE-INDUCED NEGATIVE OXIDE CHARGES IN N-MOSFETS SO IEEE TRANSACTIONS ON ELECTRON DEVICES LA English DT Article ID ELECTRON-TRAP GENERATION; MOS TRANSISTORS; CHANNEL MOSFETS; DEGRADATION; INJECTION; SIO2 AB We investigate the generation of electron traps by hole injection during hot-carrier stressing of n-MOSFET's. These generated electron traps are filled by an electron injection following the primary hole stress. The effect is proven and quantified by monitoring the detrapping kinetics in the multiplication factor and the charge pumping current. The traps are located in the oxide within the first few nanometers to the interface. An interaction of those traps with interface states is found in that charged electron traps inhibit charging or uncharging of interface states. The kinetics of hot-carrier-induced fixed negative charges in n- and p-channel MOSFET's are compared showing significant differences in the properties of the two species of traps. Hole-induced electron traps are located much closer to the interface and their energetic level is deeper. Finally, a method is presented that allows the quantification of the effect for reliability purposes. We conclude that under digital and analog operation conditions in which hole effects cannot completely be ruled out, this effect has to be considered. C1 USN,RES LABS,WASHINGTON,DC 20375. SIEMENS COMPONENTS INC,ESSEX JCT,VT 05452. RP WEBER, W (reprint author), SIEMENS AG,CORP RES & DEV,D-81730 MUNICH,GERMANY. NR 17 TC 19 Z9 19 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 0018-9383 J9 IEEE T ELECTRON DEV JI IEEE Trans. Electron Devices PD AUG PY 1995 VL 42 IS 8 BP 1473 EP 1480 DI 10.1109/16.398662 PG 8 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA RJ150 UT WOS:A1995RJ15000011 ER PT J AU INDERHEES, SE KROEGER, RA JOHNSON, WN KINZER, RL KURFESS, JD GEHRELS, N AF INDERHEES, SE KROEGER, RA JOHNSON, WN KINZER, RL KURFESS, JD GEHRELS, N TI CAPACITIVE CHARGE DIVISION READOUT OF A DOUBLE-SIDED GERMANIUM STRIP DETECTOR SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article; Proceedings Paper CT 1994 Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC) CY OCT 30-NOV 05, 1994 CL NORFOLK, VA SP IEEE AB We have implemented a capacitive charge-division read-out for a germanium 5x5 orthogonal strip detector. We present measurements of non-linearity, and of energy and position resolution as a function of energy (60 and 662 keV) and of network capacitance. Energy and position non-linearities, which are worse for low capacitance networks, appear in the response along the charge division network, as well as along the length of each detector strip. The non-linearities can be corrected by using an independent gain calibration for each pixel, allowing for use of a lower capacitance charge division network which provides better position resolution. C1 USN,RES LAB,WASHINGTON,DC 20375. NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. RP INDERHEES, SE (reprint author), UNIV SPACE RES ASSOC,WASHINGTON,DC, USA. RI Gehrels, Neil/D-2971-2012; Johnson, Neil/G-3309-2014 NR 5 TC 3 Z9 3 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 AUG PY 1995 VL 42 IS 4 BP 428 EP 431 DI 10.1109/23.467807 PN 1 PG 4 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA RP819 UT WOS:A1995RP81900044 ER PT J AU ERICSON, MN SIMPSON, ML BRITTON, CL ALLEN, MD KROEGER, RA INDERHEES, SE AF ERICSON, MN SIMPSON, ML BRITTON, CL ALLEN, MD KROEGER, RA INDERHEES, SE TI A LOW-POWER, CMOS PEAK DETECT AND HOLD CIRCUIT FOR NUCLEAR PULSE SPECTROSCOPY SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article; Proceedings Paper CT 1994 Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC) CY OCT 30-NOV 05, 1994 CL NORFOLK, VA SP IEEE AB A low-power CMOS peak detecting track and hold circuit optimized for nuclear pulse spectroscopy is presented. The circuit topology eliminates the need for a rectifying diode, reducing the effect of charge injection into the hold capacitor, incorporates a linear gate at the input to prevent pulse pileup, and uses dynamic bias control that minimizes both pedestal and droop. Both positive-going and negative-going pulses are accommodated using a complementary set of track and hold circuits. Full characterization of the design fabricated in 1.2 mu m CMOS including dynamic range, integral nonlinearity, droop rate, pedestal, and power measurements is presented. The circuit operates with only 250 mu w for input pulses with 7 mu s peaking time. Power consumption was increased to 750 mu w for driving off-chip and test system capacitances. Analysis and design approaches for optimization of operational characteristics are also discussed. C1 UNIV TENNESSEE,KNOXVILLE,TN 37996. USN,RES LAB,WASHINGTON,DC 20375. RP ERICSON, MN (reprint author), OAK RIDGE NATL LAB,OAK RIDGE,TN 37831, USA. RI Simpson, Michael/A-8410-2011 OI Simpson, Michael/0000-0002-3933-3457 NR 4 TC 7 Z9 7 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 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD AUG PY 1995 VL 42 IS 4 BP 724 EP 728 DI 10.1109/23.467886 PN 1 PG 5 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA RP819 UT WOS:A1995RP81900096 ER PT J AU KROEGER, RA JOHNSON, WN KINZER, RL KURFESS, JD INDERHEES, S ALLEN, MD ALLEY, GT BRITTON, CL CLONTS, LC ERICSON, MN SIMPSON, ML AF KROEGER, RA JOHNSON, WN KINZER, RL KURFESS, JD INDERHEES, S ALLEN, MD ALLEY, GT BRITTON, CL CLONTS, LC ERICSON, MN SIMPSON, ML TI CHARGE SENSITIVE PREAMPLIFIER AND PULSE SHAPER USING CMOS PROCESS FOR GERMANIUM SPECTROSCOPY SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article; Proceedings Paper CT 1994 Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC) CY OCT 30-NOV 05, 1994 CL NORFOLK, VA SP IEEE AB We have developed a low noise, low power charge sensitive amplifier and pulse shaping circuit. Our application is for a double-sided germanium strip detector, nominally providing 50 independent spectroscopy channels. An array of these detectors would provide significant improvements in imaging, spectroscopy and sensitivity for space-based gamma-ray astronomy. The key features of these electronics are low noise, very low power, and a small footprint per channel. Performance of our first circuit is in good agreement with simulations, with similar to 205e noise rms (0 pF), and 3 mW/channel power consumption. Dynamic range is 0-3.3 MeV (germanium) with a linearity of +/- 0.6%. Performance of this prototype device will be discussed. C1 UNIV SPACE RES ASSOC,WASHINGTON,DC 20024. OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. RP KROEGER, RA (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. RI Simpson, Michael/A-8410-2011; Johnson, Neil/G-3309-2014 OI Simpson, Michael/0000-0002-3933-3457; NR 10 TC 8 Z9 8 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 AUG PY 1995 VL 42 IS 4 BP 921 EP 924 DI 10.1109/23.467881 PN 1 PG 4 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA RP819 UT WOS:A1995RP81900132 ER PT J AU UHM, HS LEE, PH KIM, YI KIM, JH CHANG, HY AF UHM, HS LEE, PH KIM, YI KIM, JH CHANG, HY TI A STUDY OF DENSITY IN ELECTRON-CYCLOTRON-RESONANCE PLASMA SO IEEE TRANSACTIONS ON PLASMA SCIENCE LA English DT Article ID LOW-PRESSURE; MICROWAVE; UNIFORMITY AB A theory is developed for the density profile of low-temperature plasmas confined by applied magnetic field and an experiment of the electron-cyclotron-resonance (ECR) plasma is conducted to compare the theoretical prediction and experimental measurements. Due to a large electron mobility along the magnetic field, electrons move quickly out of the system, leaving ions behind and building a space charge potential, which leads to the ambipoIar diffusion of ions. In a steady-state condition, the plasma generation by ionization of neutral molecules is in balance with plasma loss due to the diffusion, leading to the electron temperature equation, which is expressed in terms of the plasma size, chamber pressure, and the ionization energy and cross section of neutrals. The power balance condition leads to the plasma density equation, which is also expressed in terms of the electron temperature, the input microwave power and the chamber pressure. It is shown that the plasma density increases, reaches its peak and decreases, as the chamber pressure increases from a small value (0.1 mTorr). These simple expressions of electron temperature and density provide a scaling law of ECR plasma in terms of system parameters. After carrying out an experimental observation, it is concluded that the theoretical predictions of the electron temperature and plasma density agree remarkably well with experimental data. C1 KOREA ADV INST SCI & TECHNOL,DEPT PHYS,TAEJON 305701,SOUTH KOREA. RP UHM, HS (reprint author), USN,CTR SURFACE WARFARE,SILVER SPRING,MD 20903, USA. RI Chang, Hong-Young/C-1964-2011 NR 23 TC 7 Z9 7 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 0093-3813 J9 IEEE T PLASMA SCI JI IEEE Trans. Plasma Sci. PD AUG PY 1995 VL 23 IS 4 BP 628 EP 635 DI 10.1109/27.467984 PG 8 WC Physics, Fluids & Plasmas SC Physics GA RW963 UT WOS:A1995RW96300015 ER PT J AU MCMILLAN, S ORIN, DE AF MCMILLAN, S ORIN, DE TI EFFICIENT COMPUTATION OF ARTICULATED-BODY INERTIAS USING SUCCESSIVE AXIAL SCREWS SO IEEE TRANSACTIONS ON ROBOTICS AND AUTOMATION LA English DT Note AB The articulated-body (AB) algorithm for dynamic simulation of chains of rigid bodies was developed by Featherstone [1]. The most costly step in this algorithm is the computation of the AB inertias at each link which involves a spatial (6 x 6) congruence transformation. The amount of computation required is closely coupled to the kinematic modeling technique used, This paper examines this computation in detail and presents an efficient step-by-step procedure for its evaluation in a serial chain with revolute and prismatic joints using nodified Denavit-Hartenberg parameters for modeling the kinematics. The result is a very efficient procedure using successive axial screws that reduces the computational requirements of the AB algorithm by about 15% from results obtained by Brandl, Johanni, and Otter [2]. The procedure developed defines a general approach and can be used to improve the efficiency of spatial congruence transformations of other types of matrices, such as spatial rigid-body inertias (used in the Composite Rigid-Body simulation algorithm [3], [4]). C1 OHIO STATE UNIV,DEPT ELECT ENGN,COLUMBUS,OH 43210. RP MCMILLAN, S (reprint author), USN,POSTGRAD SCH,DEPT COMP SCI,MONTEREY,CA 93943, USA. NR 12 TC 19 Z9 19 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 1042-296X J9 IEEE T ROBOTIC AUTOM JI IEEE Trans. Robot. Autom. PD AUG PY 1995 VL 11 IS 4 BP 606 EP 611 DI 10.1109/70.406935 PG 6 WC Automation & Control Systems; Engineering, Electrical & Electronic; Robotics SC Automation & Control Systems; Engineering; Robotics GA RR511 UT WOS:A1995RR51100013 ER PT J AU MCMILLAN, S ORIN, DE MCGHEE, RB AF MCMILLAN, S ORIN, DE MCGHEE, RB TI EFFICIENT DYNAMIC SIMULATION OF AN UNDERWATER VEHICLE WITH A ROBOTIC MANIPULATOR SO IEEE TRANSACTIONS ON SYSTEMS MAN AND CYBERNETICS LA English DT Article AB In this paper, an efficient dynamic simulation algorithm is developed for an underwater robotic vehicle (URV) with a manipulator, It is based on previous work on efficient O(N) algorithms, where N is the number of links in the manipulator, and has been extended to include the effects of a mobile base (the URV body), In addition, the various hydrodynamic fortes exerted on these systems in underwater environments are also incorporated into the simulation, The effects modeled in this work are added mass, viscous drag, fluid acceleration, and buoyancy fortes, With efficient implementation of the resulting algorithm, the amount of computation with inclusion of the hydrodynamics is almost double that of the original algorithm for a six degree-of-freedom land-based manipulator with a mobile base, Nevertheless, the amount of computation still only grows linearly with the number of degrees of freedom in the manipulator. C1 OHIO STATE UNIV,DEPT ELECT ENGN,COLUMBUS,OH 43210. RP MCMILLAN, S (reprint author), USN,POSTGRAD SCH,DEPT COMP SCI,MONTEREY,CA 93943, USA. NR 32 TC 74 Z9 76 U1 0 U2 5 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9472 J9 IEEE T SYST MAN CYB JI IEEE Trans. Syst. Man Cybern. PD AUG PY 1995 VL 25 IS 8 BP 1194 EP 1206 DI 10.1109/21.398681 PG 13 WC Computer Science, Cybernetics; Engineering, Electrical & Electronic SC Computer Science; Engineering GA RJ142 UT WOS:A1995RJ14200002 ER PT J AU RISHER, JF JEDERBERG, WW CARPENTER, RL AF RISHER, JF JEDERBERG, WW CARPENTER, RL TI THE ASSESSMENT OF HEALTH RISK TO OCCUPATIONALLY EXPOSED NAVY PERSONNEL - A CONSIDERATION OF ISSUES SO INHALATION TOXICOLOGY LA English DT Article; Proceedings Paper CT Conference on Temporal Aspects in Risk Assessment for Noncancer Endpoints CY APR 18-20, 1994 CL WRIGHT PATTERSON AFB, OH SP Tri Serv Toxicology, Wright Patterson Air Force Base, US EPA, Off Res & Dev, Agcy Tox Subst & Dis Registry, Div Toxicol, Natl Res Council Comm Toxicol AB Occupational exposures of Naval personnel to toxic chemicals and other substances occur continually by virtue of their jobs and the mission of the Navy. Such exposures are similar to, yet in many respects distinct from, either occupational exposures of civilian workers or environmental exposures of the general population. Primary dissimilarities may include the duration of exposure, the intermittent nature of exposure, and the age, health, and physical condition of the exposed population. Although the length of individual exposures may be similar, the cumulative time in which a worker is exposed is likely to be different. Any exposures at a given duty station are often intermittent with prolonged (days or months) exposure-free periods in between. The Navy, therefore, is faced with developing an occupational risk assessment paradigm specific to, and appropriate for, the types of occupational exposures experienced by Navy personnel in the performance of shipboard or other duties. Acceptable risk must take into account not only the protection of worker health, but also the ability of the exposed individual to fulfill the Navy mission at hand. Hence, the toxicity endpoints, exposure assumptions, and risk assessment used as a basis of chronic risk determination for the general population may not be the most appropriate approach for Navy personnel in some situations. This article discusses the differences between Navy and nonmilitary exposure scenarios and contrasts the merits of some of the existing exposure standards and surveillance programs in use to estimate health risk in a Navy setting. C1 USN,MED RES INST,DEPT TOXICOL,WRIGHT PATTERSON AFB,OH. NR 22 TC 0 Z9 0 U1 0 U2 1 PU TAYLOR & FRANCIS PI BRISTOL PA 1900 FROST ROAD, SUITE 101, BRISTOL, PA 19007-1598 SN 0895-8378 J9 INHAL TOXICOL JI Inhal. Toxicol. PD AUG-SEP PY 1995 VL 7 IS 6 BP 983 EP 1003 DI 10.3109/08958379509012805 PG 21 WC Toxicology SC Toxicology GA RQ508 UT WOS:A1995RQ50800014 ER PT J AU KELSO, JM AF KELSO, JM TI ORAL ALLERGY SYNDROME SO JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY LA English DT Letter RP KELSO, JM (reprint author), USN,MED CTR,DIV ALLERGY,SAN DIEGO,CA 92134, USA. NR 1 TC 6 Z9 7 U1 0 U2 0 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0091-6749 J9 J ALLERGY CLIN IMMUN JI J. Allergy Clin. Immunol. PD AUG PY 1995 VL 96 IS 2 BP 275 EP 275 DI 10.1016/S0091-6749(95)70022-6 PG 1 WC Allergy; Immunology SC Allergy; Immunology GA RQ001 UT WOS:A1995RQ00100022 PM 7636069 ER PT J AU CARLOS, WE PROKES, SM AF CARLOS, WE PROKES, SM TI THE EX DEFECT CENTER IN POROUS SILICON SO JOURNAL OF APPLIED PHYSICS LA English DT Note ID LUMINESCENCE; PHOTOLUMINESCENCE; WAFERS AB We report the observation of the EX center in porous silicon by electron spin resonance (ESR). This center has been previously observed in low temperature thin oxides on crystalline Si and is believed to comprise a delocalized hole on three or four oxygen dangling bonds at a Si vacancy. In porous Si the defect is seen only in samples which have been oxidized for a very short period of time (similar to 1 min). The ESR intensity of the EX center correlates with the red room-temperature photoluminescence. RP CARLOS, WE (reprint author), USN,POSTGRAD SCH,WASHINGTON,DC 20350, USA. NR 25 TC 33 Z9 33 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 AUG 1 PY 1995 VL 78 IS 3 BP 2129 EP 2131 DI 10.1063/1.360761 PG 3 WC Physics, Applied SC Physics GA RK576 UT WOS:A1995RK57600119 ER PT J AU MARTIN, PJ AF MARTIN, PJ TI HINDCASTING CHANGES IN UPPER-OCEAN THERMAL STRUCTURE ON SHORT TIMESCALES WITH DATA FROM MILE AND OCEAN WEATHER STATION PAPA SO JOURNAL OF ATMOSPHERIC AND OCEANIC TECHNOLOGY LA English DT Article ID MIXED-LAYER; VARIABILITY; DYNAMICS; MODELS AB The skill of mixed-layer hindcasts of short (12-120 h) duration was investigated using data from Ocean Weather Station Papa for the years 1960-68, and from the Mixed Layer Experiment (MILE), which was conducted about 40 km southwest of Papa in late summer of 1977. The hindcasts were initialized and validated with observed temperature profiles and forced with surface wind stresses and heat fluxes calculated from meteorological observations. Mean and rms hindcast errors for sea surface temperature (SST) and mixed-layer depth (MLD) were compared with errors for persistence and climatology. Hindcast skill was calculated as the percent improvement of the hindcast rms error over the persistence rms error. The hindcast skill was significantly higher for the MILE data than for the Papa data. Hindcast skill with the Papa data was generally higher in spring and summer than in fall and winter. The range of hindcast skill for hindcasts of 12-36-h duration was 39%-48% for SST and 28%-37% for MLD for the MILE data versus 14%-19% for SST and 22%-33% for MLD for the Papa data for the spring and summer. Smoothing the MILE temperature observations with a 2-h running mean resulted in an increase in hindcast skill of about 3% due to the reduction in small-scale noise. The persistence rms MLD error was found to exceed the climatological error after about 2 days for both the MILE hindcasts and for the Papa spring and summer hindcasts. Hindcasts initialized from climatology in spring and summer showed skill for MLD similar to that for hindcasts initialized from an observed profile for hindcast durations longer than about 2 days. RP MARTIN, PJ (reprint author), USN,RES LAB,CODE 7331,BAY ST LOUIS,MS 39529, USA. NR 22 TC 0 Z9 0 U1 0 U2 0 PU AMER METEOROLOGICAL SOC PI BOSTON PA 45 BEACON ST, BOSTON, MA 02108-3693 SN 0739-0572 J9 J ATMOS OCEAN TECH JI J. Atmos. Ocean. Technol. PD AUG PY 1995 VL 12 IS 4 BP 871 EP 880 DI 10.1175/1520-0426(1995)012<0871:HCIUOT>2.0.CO;2 PG 10 WC Engineering, Ocean; Meteorology & Atmospheric Sciences SC Engineering; Meteorology & Atmospheric Sciences GA RJ423 UT WOS:A1995RJ42300012 ER PT J AU WASFY, M OYOFO, B ELGINDY, A CHURILLA, A AF WASFY, M OYOFO, B ELGINDY, A CHURILLA, A TI COMPARISON OF PRESERVATION MEDIA FOR STORAGE OF STOOL SAMPLES SO JOURNAL OF CLINICAL MICROBIOLOGY LA English DT Article ID CAMPYLOBACTER-JEJUNI; TRANSPORT AB Transportation of clinical samples and long-term recoverability of pathogens are critical to epidemiological studies, particularly when conditions do not permit immediate processing, This study confirms that Cary-Blair medium (CB) is suitable for the preservation of Salmonella and Shigella isolates for more than 2 weeks: at 25, 4, or -70 degrees C, Campylobacter jejuni was not recovered after 2 days of storage in CB at 25 degrees C when an inoculum of 12 x 10(8) cells per mi was used, Lower temperatures supported the recovery of this organism for 6 days, When individual pathogens were preserved with stools in CB and incubated at 25, 4, or -70 degrees C, the Salmonella and Shigella concentrations dropped from 12 x 10(8) cells to 1 x 10(3) or 1 x 10(4) cells per mi within 2 days and then remained stable for the rest of the observation period (15 days). C, jejuni survived preservation with stools for 5 to 9 days, The addition of blood and glycerol to CB improved the recoverability of all enteropathogens, particularly C. jejuni, which was consistently detected for 7 to 9 days at the different preservation temperatures used, When trypticase soy broth-glycerol (freezing medium), with or without blood, was used, there was little or no decrease in the Salmonella and Shigella concentrations during 2 weeks of preservation with stools at -70 degrees C, C. jejuni demonstrated a relatively sustained high concentration in Trypticase soy broth-glycerol with 5% blood, The use of defibrinated, laked sheep blood as a long-term freezing medium supported the recovery of low concentrations of Salmonella and Shigella spp, (10(2) to 10(3) cells per mi) for more than 14 weeks, Recovery of C. jejuni was consistent for 7 weeks when an initial concentration of 10(6) cells per mi was present in stools. Laked blood provided a simple, sterile, and inexpensive medium for the preservation of individual isolates and clinical samples. C1 USN,MED RES UNIT 3,ENTER MICROBIOL BRANCH,CAIRO,EGYPT. NR 19 TC 25 Z9 25 U1 0 U2 3 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 AUG PY 1995 VL 33 IS 8 BP 2176 EP 2178 PG 3 WC Microbiology SC Microbiology GA RJ052 UT WOS:A1995RJ05200041 PM 7559972 ER PT J AU JEROME, CE HILL, AV AF JEROME, CE HILL, AV TI PREVENTING ROOT-TIP LOSS IN THE MAXILLARY SINUS DURING ENDODONTIC SURGERY SO JOURNAL OF ENDODONTICS LA English DT Article AB Exclusion of infected root tips, dentinal debris, and inflammatory tissue from the maxillary sinus during endodontic surgery is imperative, A simple technique for preventing accidental root tip intrusion into the maxillary sinus using a 6-0 suture and needle and a hole prepared in the root tip with a #2 round bur prior to apicoectomy is presented. C1 USN,CTR DENT,ADV CLIN PROGRAM ENDODONT,SAN DIEGO,CA. LOMA LINDA UNIV,LOMA LINDA,CA. NR 7 TC 5 Z9 5 U1 0 U2 0 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0099-2399 J9 J ENDODONT JI J. Endod. PD AUG PY 1995 VL 21 IS 8 BP 422 EP 424 DI 10.1016/S0099-2399(06)80829-0 PG 3 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA RL790 UT WOS:A1995RL79000006 PM 7595157 ER PT J AU STEVENS, MH AF STEVENS, MH TI NITRIC-OXIDE GAMMA-BAND FLUORESCENT SCATTERING AND SELF-ABSORPTION IN THE MESOSPHERE AND LOWER THERMOSPHERE SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article ID ROCKET MEASUREMENTS; ULTRAVIOLET; COEFFICIENTS; STRATOSPHERE; TEMPERATURE; TRANSPORT; SPECTRUM; REGION; STATE; OZONE AB The fluorescent scattering of UV sunlight and self-absorption by the nitric oxide (NO) gamma bands between 2000-2500 Angstrom are quantified for the purpose of inferring NO density profiles as a function of altitude in the mesosphere and above. Rotational line emission rate factors and cross sections are calculated at a variety of temperatures. The observed variation of the solar spectrum across the gamma bands and its effect on emission rate factors are explored by using irradiance measurements that resolve features down to 0.1 Angstrom. The model also includes quenching by O-2 and N-2, multiple scattering, temperature effects, attenuation of the solar irradiance by O-2 and ozone, and self-absorption with the summation of adjacent rotational features. Results indicate that for resonant bands, the rotational structure in emission is not symmetric to that in absorption so that as self-absorption increases the shape of the observed emission envelope changes. For gamma(1, 0) this is largely characterized by an increase in the;integrated emission observed longward of 2151 Angstrom compared to shortward. It is found that solar irradiances measured at 0.1 Angstrom resolution decrease the calculated gamma(1, 0) and gamma(0, 0) band emission rate factors by less than 3% compared to those measured at 2 Angstrom resolution. However, more Fraunhofer structure included in the calculation is reflected in the relative intensities of the rotational features. It is also found that extinction of the solar irradiance by ozone and quenching by O-2 rapidly reduce the gamma(1, 0) emission rate factor with decreasing altitude below 60 km. RP STEVENS, MH (reprint author), USN,RES LAB,EO HULBURT CTR SPACE RES,WASHINGTON,DC 20375, USA. NR 39 TC 19 Z9 19 U1 1 U2 2 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES JI J. Geophys. Res-Space Phys. PD AUG 1 PY 1995 VL 100 IS A8 BP 14735 EP 14742 DI 10.1029/95JA01616 PG 8 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA RN064 UT WOS:A1995RN06400021 ER PT J AU BURNS, WK AF BURNS, WK TI LINEARIZED OPTICAL MODULATOR WITH 5TH-ORDER CORRECTION SO JOURNAL OF LIGHTWAVE TECHNOLOGY LA English DT Article AB A linearized solution for a series cascade of three Mach Zehnder interferometers separated by directional couplers is obtained that eliminates both the third and fifth order coefficients of the Taylor series representation of the transfer function, The device is characterized in terms of harmonic distortion with a three tone signal, similar to 20-dB improvement in third harmonic distortion is obtained compared to a two section device. RP BURNS, WK (reprint author), USN,OPT WAVEGUIDE SECT,RES LAB,OPT TECH BRANCH,WASHINGTON,DC 20375, USA. NR 8 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 0733-8724 J9 J LIGHTWAVE TECHNOL JI J. Lightwave Technol. PD AUG PY 1995 VL 13 IS 8 BP 1724 EP 1727 DI 10.1109/50.405316 PG 4 WC Engineering, Electrical & Electronic; Optics; Telecommunications SC Engineering; Optics; Telecommunications GA RQ550 UT WOS:A1995RQ55000016 ER PT J AU NAZERI, A KAHN, M KIDD, T AF NAZERI, A KAHN, M KIDD, T TI STRONTIUM-BARIUM-TITANATE THIN-FILMS BY SOL-GEL PROCESSING SO JOURNAL OF MATERIALS SCIENCE LETTERS LA English DT Article C1 UNIV ILLINOIS,URBANA,IL 61801. RP NAZERI, A (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 2 TC 24 Z9 24 U1 0 U2 0 PU CHAPMAN HALL LTD PI LONDON PA 2-6 BOUNDARY ROW, LONDON, ENGLAND SE1 8HN SN 0261-8028 J9 J MATER SCI LETT JI J. Mater. Sci. Lett. PD AUG 1 PY 1995 VL 14 IS 15 BP 1085 EP 1088 DI 10.1007/BF00258172 PG 4 WC Materials Science, Multidisciplinary SC Materials Science GA RN667 UT WOS:A1995RN66700016 ER PT J AU JEWELL, JM FRIEBELE, EJ AGGARWAL, ID AF JEWELL, JM FRIEBELE, EJ AGGARWAL, ID TI TRANSPARENT HEAVY-METAL FLUORIDE GLASS-CERAMIC SO JOURNAL OF NON-CRYSTALLINE SOLIDS LA English DT Letter AB A CdF2-LiF-AlF3-PbF2 (CLAP) glass was doped with ZrF4 and crystallized using a controlled heat treatment. The heat treatment resulted in the formation of a glass-ceramic which is > 95% crystalline and transparent(> 80%) from the visible (similar to 400 nm) to the mid-IR (> 7 mu m). RP JEWELL, JM (reprint author), USN,RES LAB,DIV OPT SCI,WASHINGTON,DC 20375, USA. NR 8 TC 15 Z9 18 U1 0 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3093 J9 J NON-CRYST SOLIDS JI J. Non-Cryst. Solids PD AUG PY 1995 VL 188 IS 3 BP 285 EP 288 DI 10.1016/0022-3093(95)00200-6 PG 4 WC Materials Science, Ceramics; Materials Science, Multidisciplinary SC Materials Science GA RM294 UT WOS:A1995RM29400010 ER PT J AU DECREDICO, MA AF DECREDICO, MA TI ALEXANDRIA ON THE POTOMAC - THE PORTRAIT OF AN ANTEBELLUM COMMUNITY - HURST,HW SO JOURNAL OF SOUTHERN HISTORY LA English DT Book Review RP DECREDICO, MA (reprint author), USN ACAD,ANNAPOLIS,MD 21402, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU SOUTHERN HISTORICAL ASSN PI ATHENS PA UNIV GEORGIA HISTORY DEPT, ATHENS, GA 30602 SN 0022-4642 J9 J SOUTHERN HIST JI J. South. Hist. PD AUG PY 1995 VL 61 IS 3 BP 589 EP 590 DI 10.2307/2211892 PG 2 WC History SC History GA RN685 UT WOS:A1995RN68500024 ER PT J AU PICKETT, WE SINGH, DJ AF PICKETT, WE SINGH, DJ TI NEW CLASS OF INTERMETALLIC BOROCARBIDE SUPERCONDUCTORS - ELECTRON-PHONON COUPLING AND PHYSICAL PARAMETERS SO JOURNAL OF SUPERCONDUCTIVITY LA English DT Article; Proceedings Paper CT University-of-Miami Workshop on High-Temperature Superconductivity - Physical Properties and Mechanisms CY JAN 05-11, 1995 CL CORAL GABLES, FL SP USN, Off Naval Res, Univ Miami DE BOROCARBIDES; SUPERCONDUCTOR; ELECTRONIC PROPERTIES AB In spite of their layered crystal structure, the new class of intermetallic borocarbide superconductors (typified by LuNi2B2C) have three-dimensional conduction with anisotropy being a minor factor. The calculated electron-phonon coupling constants are consistent with a picture of moderate- to strong-coupling conventional superconductivity, with large contributions from boron vibrations. We report several calculated material parameters for members of this class of compounds, and compare with some of the experimental data. RP PICKETT, WE (reprint author), USN,RES LAB,COMPLEX SYST THEORY BRANCH,WASHINGTON,DC 20375, USA. RI Singh, David/I-2416-2012 NR 20 TC 10 Z9 10 U1 1 U2 2 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 1995 VL 8 IS 4 BP 425 EP 428 DI 10.1007/BF00722821 PG 4 WC Physics, Applied; Physics, Condensed Matter SC Physics GA RU785 UT WOS:A1995RU78500009 ER PT J AU KRESIN, VZ WOLF, SA ADRIAN, SD REEVES, ME OVCHINNIKOV, YN AF KRESIN, VZ WOLF, SA ADRIAN, SD REEVES, ME OVCHINNIKOV, YN TI ENERGY-SPECTRUM IN THE HIGH T-C OXIDES SO JOURNAL OF SUPERCONDUCTIVITY LA English DT Article; Proceedings Paper CT University-of-Miami Workshop on High-Temperature Superconductivity - Physical Properties and Mechanisms CY JAN 05-11, 1995 CL CORAL GABLES, FL SP USN, Off Naval Res, Univ Miami DE GAPLESSNESS; MAGNETIC IMPURITIES; PENETRATION DEPTH; H-C2 ID PENETRATION DEPTH MEASUREMENTS; THIN-FILMS; SUPERCONDUCTORS; YBA2CU3O7-DELTA; PARAMETERS AB The energy gap structure of the cuprates depends strongly on levels of doping. The stoichiometric compound YBa2Cu3O7 displays a peculiar two-gap structure. Oxygen depletion is accompanied by the transition to the gapless state, and this is manifested in various transport, electromagnetic, etc. properties of the material. The temperature dependence of the penetration depth correlates with oxygen content and is characterized by various power laws in an oxygen depleted sample. In other cuprates, overdoping leads to gaplessness and a peculiar dependence of H-c2. C1 USN, RES LAB, WASHINGTON, DC 20375 USA. LD LANDAU THEORET PHYS INST, MOSCOW 11733, RUSSIA. RP KRESIN, VZ (reprint author), UNIV CALIF BERKELEY, LAWRENCE BERKELEY LAB, BERKELEY, CA 94720 USA. RI Wolf, Stuart/A-7513-2009 NR 28 TC 2 Z9 2 U1 0 U2 0 PU SPRINGER/PLENUM PUBLISHERS PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 0896-1107 J9 J SUPERCOND JI J. Supercond. PD AUG PY 1995 VL 8 IS 4 BP 441 EP 444 DI 10.1007/BF00722825 PG 4 WC Physics, Applied; Physics, Condensed Matter SC Physics GA RU785 UT WOS:A1995RU78500013 ER PT J AU OSOFSKY, MS LECHTER, WL TOTH, LE SKELTON, EF DREWS, AR KIM, CC DAS, B QADRI, SB WEBB, AW SOULEN, RJ AF OSOFSKY, MS LECHTER, WL TOTH, LE SKELTON, EF DREWS, AR KIM, CC DAS, B QADRI, SB WEBB, AW SOULEN, RJ TI SUPERCONDUCTIVITY ABOVE 100 K IN COMPOUNDS CONTAINING HG SO JOURNAL OF SUPERCONDUCTIVITY LA English DT Article; Proceedings Paper CT University-of-Miami Workshop on High-Temperature Superconductivity - Physical Properties and Mechanisms CY JAN 05-11, 1995 CL CORAL GABLES, FL SP USN, Off Naval Res, Univ Miami DE SUPERCONDUCTIVITY; CUPRATE; HG; TL ID CU-O SYSTEM; BULK SUPERCONDUCTIVITY; CA AB The results of studies of new Hg based cuprate superconductors are reported. Several members of a new family of (Hg,T1)(Ba,Sr)Can-2CunOx high temperature superconductors have been synthesized. These compounds, which are analogs to the Hg-Ba-Ca- and T1-Ba-Ca- layered cuprates, are multi-phased and have superconducting transition temperatures above 100 K. incorporation of Hg appears to stabilize several of the T1-compounds, including a double layer. T1/Sr system, in a manner similar to the role that Pb plays in the T1/Sr- and Bi/Sr-systems. It has been suggested that recent reports of resistive T-c's above 200 K in Hg based samples are due to the presence of free Hg. Magnetization measurements of such a sample confirm this hypothesis. RP OSOFSKY, MS (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. RI Osofsky, Michael/A-1050-2010 NR 15 TC 1 Z9 1 U1 0 U2 1 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 1995 VL 8 IS 4 BP 511 EP 514 DI 10.1007/BF00722843 PG 4 WC Physics, Applied; Physics, Condensed Matter SC Physics GA RU785 UT WOS:A1995RU78500031 ER PT J AU HURDLE, BG AF HURDLE, BG TI ASA MEMBERSHIP DEMOGRAPHICS [43.05.KY] SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA LA English DT Note RP HURDLE, BG (reprint author), USN,RES LAB,CODE 7103,WASHINGTON,DC 20375, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0001-4966 J9 J ACOUST SOC AM JI J. Acoust. Soc. Am. PD AUG PY 1995 VL 98 IS 2 BP 677 EP 677 DI 10.1121/1.413635 PN 1 PG 1 WC Acoustics; Audiology & Speech-Language Pathology SC Acoustics; Audiology & Speech-Language Pathology GA RN502 UT WOS:A1995RN50200004 ER PT J AU PARVULESCU, A AF PARVULESCU, A TI MATCHED-SIGNAL (MESS) PROCESSING BY THE OCEAN SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA LA English DT Article AB This paper was originally written in 1967 and then delivered at the University of Hawaii ih 1969 in a series of three lectures. Minor modifications of the original paper have been made, in the form of deletions of now well-known subjects. Scientific advances since 1969 are not discussed. The author's matched-signal (''MESS'') technique and his detailed 1965-67 environmental measurements have so far been made known only to a limited audience. A patent [A. Parvulescu, U.S. Patent No. 3,939, 461 (19 November 1962)] was granted to the author in 1962 and declassified in 1976. The paper is being published now, because the MESS technique continues to be significant in its own right, and because it is useful for making environmental and operational measurements. Certain comments, for example, those addressing the practical limitations in performing correlations, while no longer true, were previously driving forces and are mentioned as such. Similarly, it may be noted that the agreement between models and measurements has improved over the years. (C) 1995 Acoustical Society of America. RP PARVULESCU, A (reprint author), USN,RES LAB,CODE 7130-X,WASHINGTON,DC 20375, USA. NR 26 TC 52 Z9 53 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0001-4966 J9 J ACOUST SOC AM JI J. Acoust. Soc. Am. PD AUG PY 1995 VL 98 IS 2 BP 943 EP 960 DI 10.1121/1.413520 PN 1 PG 18 WC Acoustics; Audiology & Speech-Language Pathology SC Acoustics; Audiology & Speech-Language Pathology GA RN502 UT WOS:A1995RN50200032 ER PT J AU FEUILLADE, C AF FEUILLADE, C TI SCATTERING FROM COLLECTIVE MODES OF AIR BUBBLES IN WATER AND THE PHYSICAL-MECHANISM OF SUPERRESONANCES SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA LA English DT Article ID ACOUSTIC SCATTERING; SYSTEMS; SURFACE; CLOUDS; SIZE AB A coupled oscillator method is used to describe collective acoustic resonances and scattering from multiple air bubbles in water. By recombining equations, the problem is decomposed into that of scattering from individual normal modes of the ensemble. Each mode has specific resonant properties. ''Symmetric'' modes, where the bubbles oscillate in phase with each other, typically show downward frequency shifts and increased damping. ''Antisymmetric'' modes, where some or all of the bubbles oscillate in antiphase, generally show upward frequency shifts and reduced damping. For two bubbles the method predicts frequency shifts which agree with experimental results. The resonance response functions predict that a two bubble system may become superresonant provided (a) the mode is antisymmetric, (b) the individual bubbles are primarily radiation damped, and (c) the bubbles are spaced such that the modal damping is small. Superresonant scattering is dipolar and propagates little energy in the far field, making the phenomenon difficult to observe experimentally. Scattering from a bubble reflected in a pressure release surface may show the phenomenon strongly. The antisymmetric modes of a triangular arrangement of three bubbles are degenerate and may also become superresonant. The damping of line ensembles of bubbles varies strongly with the bubble spacing. (C) 1995 Acoustical Society of America. RP FEUILLADE, C (reprint author), USN,RES LAB,BAY ST LOUIS,MS 39529, USA. NR 34 TC 39 Z9 39 U1 0 U2 4 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0001-4966 J9 J ACOUST SOC AM JI J. Acoust. Soc. Am. PD AUG PY 1995 VL 98 IS 2 BP 1178 EP 1190 DI 10.1121/1.413616 PN 1 PG 13 WC Acoustics; Audiology & Speech-Language Pathology SC Acoustics; Audiology & Speech-Language Pathology GA RN502 UT WOS:A1995RN50200056 ER PT J AU SCANDRETT, CL FRENZEN, CL AF SCANDRETT, CL FRENZEN, CL TI BI-ORTHOGONALITY RELATIONSHIPS INVOLVING POROUS-MEDIA SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA LA English DT Article AB Bi-orthogonality relationships are established for a vertically heterogeneous porous media in contact with a fluid, a solid, a second porous medium, and a free surface. Eraser's bi-orthogonality relation for propagation of Rayleigh-Lamb modes in a plate with traction-free surfaces is shown to be a special case of the bi-orthogonality relations derived herein in which the medium can be thought of as a porous slab with zero porosity. RP SCANDRETT, CL (reprint author), USN,POSTGRAD SCH,DEPT MATH,CODE MA,MONTEREY,CA 93943, USA. NR 13 TC 5 Z9 5 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0001-4966 J9 J ACOUST SOC AM JI J. Acoust. Soc. Am. PD AUG PY 1995 VL 98 IS 2 BP 1199 EP 1203 DI 10.1121/1.413618 PN 1 PG 5 WC Acoustics; Audiology & Speech-Language Pathology SC Acoustics; Audiology & Speech-Language Pathology GA RN502 UT WOS:A1995RN50200058 ER PT J AU SANGHERA, JS KUNG, FH BUSSE, LE PUREZA, PC AGGARWAL, ID AF SANGHERA, JS KUNG, FH BUSSE, LE PUREZA, PC AGGARWAL, ID TI INFRARED EVANESCENT ABSORPTION-SPECTROSCOPY OF TOXIC-CHEMICALS USING CHALCOGENIDE CLASS FIBERS SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY LA English DT Article ID SENSOR AB We have detected hazardous and toxic chemicals such as chlorinated hydrocarbons and benzene and its derivatives using evanescent wave spectroscopy with in-house drawn chalcogenide glass fibers. Although, these chemicals have been readily detected down to the volume percent level, we make appropriate recommendations to lower the detection limits to the part per million level, While the current fibers can be used in lengths of up to 30 m for detection and identification of these chemicals, our results indicate that the remote capabilities of these fibers can be significantly improved into the several hundreds of meters range with lower loss fibers, as they become available with improved processing, RP SANGHERA, JS (reprint author), USN,RES LAB,CODE 56032,WASHINGTON,DC 20375, USA. NR 12 TC 50 Z9 50 U1 0 U2 3 PU AMER CERAMIC SOC 735 CERAMIC PLACE PI WESTERVILLE PA PO BOX 6136, WESTERVILLE, OH 43081-6136 SN 0002-7820 J9 J AM CERAM SOC JI J. Am. Ceram. Soc. PD AUG PY 1995 VL 78 IS 8 BP 2198 EP 2202 DI 10.1111/j.1151-2916.1995.tb08636.x PG 5 WC Materials Science, Ceramics SC Materials Science GA TJ789 UT WOS:A1995TJ78900027 ER PT J AU RYAN, RL MCCAFFERTY, E AF RYAN, RL MCCAFFERTY, E TI RUPTURE OF AN OXIDE BLISTER SO JOURNAL OF THE ELECTROCHEMICAL SOCIETY LA English DT Article ID ION-IMPLANTED ALUMINUM; CORROSION AB Expressions have been derived which describe the critical stress and pressure necessary to rupture oxide blisters which form on aluminum during the growth of corrosion pits. These expressions have been derived and evaluated for radial cracks in the oxide blister. The critical stress and corresponding pressure for rupture decrease with increasing blister radius and decrease with increasing crack length. The critical stress is independent of the ratio of oxide film thickness to blister radius, whereas the rupture pressure increases with this ratio. The critical stress is independent of Poisson's ratio for the oxide film whereas the rupture pressure is weakly dependent on Poisson's ratio for the oxide film. RP RYAN, RL (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 16 TC 16 Z9 16 U1 0 U2 5 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 AUG PY 1995 VL 142 IS 8 BP 2594 EP 2597 DI 10.1149/1.2050059 PG 4 WC Electrochemistry; Materials Science, Coatings & Films SC Electrochemistry; Materials Science GA RN053 UT WOS:A1995RN05300018 ER PT J AU ELSON, JM TRAN, P AF ELSON, JM TRAN, P TI DISPERSION IN PHOTONIC MEDIA AND DIFFRACTION FROM GRATINGS - A DIFFERENT MODAL EXPANSION FOR THE R-MATRIX PROPAGATION TECHNIQUE SO JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION LA English DT Article ID BAND-STRUCTURE; SCATTERING; EQUATIONS; GAP AB A method of solving problems of diffraction and dispersion in electromagnetic theory is presented. A modal expansion technique is used with a recursive R-matrix propagation scheme. This method retains the inherent R-matrix numerical stability and yet, contrary to some recent studies, is quite easy to implement for periodic structures (both two and three dimensional), including gratings and photonic crystal media. Grating structures may be multilayered structure, linear or crossed. Photonic media may be latticelike structures of finite or infinite depth. The eigenvalues of the modes are obtained by diagonalizing a matrix rather than searching for zeros of characteristic equations. Diffraction from dielectric and metallic sinusoidal gratings is calculated, and the results are compared with other published results. Transmission is calculated through a seven-layer-deep square arrangement of dielectric cylinders. Also, with the Floquet theorem, the bulk dispersion of the same cylinder geometry is calculated, and the results are compared with other published results. Of particular interest as a computational tool is a description of how a complex structure can be recursively added, whole structures at a time, after the initial structure has been calculated. This is very significant in terms of time savings, since most of the numerical work is done with the initial structure. RP ELSON, JM (reprint author), USN,CTR AIR WARFARE,DIV WEAPONS,DIV RES & TECHNOL,CHINA LAKE,CA 93555, USA. NR 18 TC 24 Z9 25 U1 0 U2 2 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 AUG PY 1995 VL 12 IS 8 BP 1765 EP 1771 DI 10.1364/JOSAA.12.001765 PG 7 WC Optics SC Optics GA RK710 UT WOS:A1995RK71000018 ER PT J AU FREEMAN, RK HOWDEN, FM GABLE, PS BETHEL, KJ AF FREEMAN, RK HOWDEN, FM GABLE, PS BETHEL, KJ TI EXTRAMEDULLARY HEMATOPOIESIS PRESENTING AS AN INTRAATRIAL MASS IN A PATIENT WITH CHRONIC MYELOGENOUS LEUKEMIA SO JOURNAL OF THORACIC AND CARDIOVASCULAR SURGERY LA English DT Note ID MYELOID METAPLASIA; TAMPONADE C1 USN,MED CTR,DIV ONCOL,SAN DIEGO,CA 92152. USN,MED CTR,DEPT PATHOL,SAN DIEGO,CA 92152. USN,MED CTR,DEPT CLIN INVEST,SAN DIEGO,CA 92152. RP FREEMAN, RK (reprint author), USN,MED CTR,DIV THORAC SURG & HEMATOL,SAN DIEGO,CA 92152, USA. NR 7 TC 5 Z9 5 U1 0 U2 0 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0022-5223 J9 J THORAC CARDIOV SUR JI J. Thorac. Cardiovasc. Surg. PD AUG PY 1995 VL 110 IS 2 BP 552 EP 554 DI 10.1016/S0022-5223(95)70257-1 PG 3 WC Cardiac & Cardiovascular Systems; Respiratory System; Surgery SC Cardiovascular System & Cardiology; Respiratory System; Surgery GA RQ271 UT WOS:A1995RQ27100033 PM 7637378 ER PT J AU PIERCE, JF AF PIERCE, JF TI SYMMETRY-BREAKING BIFURCATIONS IN STOPPELLIS PROBLEM FOR PSEUDO-RIGID BODIES SO MATHEMATICAL MODELS & METHODS IN APPLIED SCIENCES LA English DT Article ID 3-DIMENSIONAL ELASTICITY; TRACTION PROBLEM; THIN ROD; REPRESENTATIONS; STABILITY; BODY AB The work examines what changes can occur to the orbit of trivially equilibrating configurations for a pseudo-rigid body possessing a natural state when perturbing loads are applied. The question is analyzed by formulating it as a problem of bifurcation on a group orbit to which the theory of singularities applies. The analysis indicates how alterations of the orbit depend upon features of the perturbing load, and of the material composing the body. RP PIERCE, JF (reprint author), USN ACAD,DEPT MATH,ANNAPOLIS,MD 21402, USA. NR 41 TC 0 Z9 0 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA JOURNAL DEPT PO BOX 128 FARRER ROAD, SINGAPORE 9128, SINGAPORE SN 0218-2025 J9 MATH MOD METH APPL S JI Math. Models Meth. Appl. Sci. PD AUG PY 1995 VL 5 IS 5 BP 683 EP 724 DI 10.1142/S0218202595000395 PG 42 WC Mathematics, Applied SC Mathematics GA RT652 UT WOS:A1995RT65200007 ER PT J AU BOVE, AA OXLER, SJ AF BOVE, AA OXLER, SJ TI MEDICAL DEPARTMENT OPERATIONS IN A FLEET HOSPITAL DURING OPERATION DESERT-STORM SO MILITARY MEDICINE LA English DT Article AB Fleet hospital 15 was deployed to Saudi Arabia in Operation Desert Storm, The facility was a 500-bed echelon-3 hospital located near Al Jubail, which served the fleet marines from February to April 1991. The medical staff of the department of medicine consisted of reserve medical officers with a variety of backgrounds. The desert environment, concern for endemic diseases, limitations of equipment, and the environment of conflict presented challenges to the medical department that required adaptation of civilian skills to this new environment. The hospital served as a community medical center, with 86% of the inpatient and outpatient treatment provided for non-battle-related illness and injury. Design considerations of fleet hospitals for future deployments should include the likelihood of treating a large number of non-battle-related injuries and illnesses. RP BOVE, AA (reprint author), USN,RESERVE FLEET HOSP 07,MED SERV,FT DIX,NJ 08640, 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 AUG PY 1995 VL 160 IS 8 BP 391 EP 395 PG 5 WC Medicine, General & Internal SC General & Internal Medicine GA RP795 UT WOS:A1995RP79500006 PM 8524463 ER PT J AU VANTUYL, AH AF VANTUYL, AH TI EVALUATION OF A SCHEME FOR IMPROVING THE ACCEPTANCE OF LOW-LATITUDE DATA IN ATMOSPHERIC DATA ASSIMILATION SO MONTHLY WEATHER REVIEW LA English DT Article ID NORMAL-MODE INITIALIZATION; MULTIVARIATE STATISTICAL INTERPOLATION; NUMERICAL WEATHER PREDICTION; SPECTRAL MODEL; PHYSICAL INITIALIZATION; DIVERGENCE; EQUATION; TROPICS; SYSTEM; BOGUS AB A scheme of iterated multivariate optimum interpolation and nonlinear normal-mode initialization is applied to a shallow-water model in an attempt to reduce the rejection of low-latitude height and divergent wind data. The amount of rejection and the performance of the iterative scheme are evaluated as a function of the adjustable analysis parameters in the Tropics. Results typically indicate a modest convergence of the scheme, with analysis and initialization-produced changes to height and velocity potential showing some decrease. Allowing the normalized observation error to vary as a function of iteration significantly accelerates this decrease because the increasing ratio of observation error to background error results in smaller analysis increments. In all cases, however, the final initialized state is not greatly different from the first guess in the Tropics. The behavior of the scheme is relatively insensitive, at least qualitatively, to the value of any of the analysis parameters. Increasing (decreasing) the value of the geostrophic (divergent) parameter yields better-balanced analyses, meaning analyses with less rejection, as well as improved convergence of the iterative scheme. Varying other analysis parameters, as well as including topography and diffusion, has little qualitative impact. One finding of this study is that retaining some mass-wind coupling in the Tropics may be advantageous, since it tends to produce slightly improved balance in the analysis. The main conclusion, however, is that the combined analysis-initialization scheme appears only marginally useful at low latitudes, at least for current operational prediction systems and data sources. RP VANTUYL, AH (reprint author), USN,RES LAB,7 GRACE HOPPER AVE,STOP 2,MONTEREY,CA 93943, USA. NR 31 TC 0 Z9 0 U1 0 U2 0 PU AMER METEOROLOGICAL SOC PI BOSTON PA 45 BEACON ST, BOSTON, MA 02108-3693 SN 0027-0644 J9 MON WEATHER REV JI Mon. Weather Rev. PD AUG PY 1995 VL 123 IS 8 BP 2515 EP 2533 DI 10.1175/1520-0493(1995)123<2515:EOASFI>2.0.CO;2 PG 19 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA RK480 UT WOS:A1995RK48000015 ER PT J AU KURIHARA, LK CHOW, GM SCHOEN, PE AF KURIHARA, LK CHOW, GM SCHOEN, PE TI NANOCRYSTALLINE METALLIC POWDERS AND FILMS PRODUCED BY THE POLYOL METHOD SO NANOSTRUCTURED MATERIALS LA English DT Article ID PARTICLES AB The polyol method has been extended to synthesize metallic powders of Ru, Rh, Sn, Re, W, Pt, Au, Fe-Cu, Co-Cu, Ni-Cu, in addition to powders of Fe, Co, Ni, Cu, Pd and Ag which were previously prepared by others using this method. This method can also be used to deposit nanocrystalline metallic films on a variety of substrates, including Pyrex(TM), Kapton(TM), Teflon(TM) aluminum nitride, carbon fibers and alumina fibers. This can be a viable catalyst-free method for the deposition of conductive metallic films on non-conductive substrates. RP KURIHARA, LK (reprint author), USN,RES LAB,CTR BIOMOLEC SCI & ENGN,MOLEC INTERFACIAL INTERACT LAB,CODE 6930,WASHINGTON,DC 20375, USA. NR 16 TC 237 Z9 248 U1 4 U2 40 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0965-9773 J9 NANOSTRUCT MATER JI Nanostruct. Mater. PD AUG PY 1995 VL 5 IS 6 BP 607 EP 613 DI 10.1016/0965-9773(95)00275-J PG 7 WC Materials Science, Multidisciplinary SC Materials Science GA RQ263 UT WOS:A1995RQ26300001 ER PT J AU SHERALI, HD LEE, YH BOYER, DD AF SHERALI, HD LEE, YH BOYER, DD TI SCHEDULING TARGET ILLUMINATORS IN NAVAL BATTLE-GROUP ANTI-AIR WARFARE SO NAVAL RESEARCH LOGISTICS LA English DT Article ID PROGRAMMING-PROBLEMS; RELEASE DATES; ALGORITHM; TIMES; DEADLINES; JOBS AB We schedule a set of illuminators (homing devices) to strike a set of targets using surface-to-air missiles in a naval battle. The task is viewed as a production floor shop scheduling problem of minimizing the total weighted flow time, subject to time-window job availability and machine downtime side constraints. A simple algorithm based on solving assignment problems is developed for the case when all the job processing times are equal and the data are all integer. For the general case of scheduling jobs with unequal processing times, we develop two alternate formulations and analyze their relative strengths by comparing their respective linear programming relaxations. We select the better formulation in this comparison and exploit its special structures to develop several effective heuristic algorithms that provide good-quality solutions in real time; this is an essential element for use by the Navy. (C) 1995 John Wiley and Sons, Inc. C1 US W ADV TECHNOL,BOULDER,CO 80303. USN,CTR SURFACE WARFARE,DAHLGREN,VA 22448. RP SHERALI, HD (reprint author), VIRGINIA POLYTECH INST & STATE UNIV,DEPT IND & SYST ENGN,BLACKSBURG,VA 24061, USA. NR 22 TC 5 Z9 5 U1 1 U2 2 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 AUG PY 1995 VL 42 IS 5 BP 737 EP 755 DI 10.1002/1520-6750(199508)42:5<737::AID-NAV3220420503>3.0.CO;2-T PG 19 WC Operations Research & Management Science SC Operations Research & Management Science GA RJ269 UT WOS:A1995RJ26900001 ER PT J AU SZU, H FOO, S AF SZU, H FOO, S TI DIVIDE-AND-CONQUER ORTHOGONALITY PRINCIPLE FOR PARALLEL OPTIMIZATIONS IN TSP SO NEUROCOMPUTING LA English DT Article DE NONCONVEX OPTIMIZATION; SIMULATED ANNEALING; TRAVELING SALESMAN PROBLEM; LOSSLESS DIVIDE-AND-CONQUER; BOUNDARY RESULTANT VECTORS; ORTHOGONAL PROJECTIONS; RECURSIVE ALGORITHMS AB A lossless divide-and-conquer (D&C) principle, implemented via an orthogonality projection, is described and illustrated with a recursive solution of the Traveling Salesman Problem (TSP), which is executable on a massively parallel and distributed computer. The lossless D&C principle guides us to look near the desirable boundary and to seek for a characteristic vector V (e.g. displacement vector in TSP) such that V approximate to A + B where two resultant vectors A and B (located one in each sub-domains to be divided) should be orthogonal to each other having no cross product terms, i.e. (A, B) = (B, A) = 0. In the case of parallel computing this goal amounts to minimum communication cost among processors. Then the global optimization of the whole domain: Min. \\V\\(2) = Min. \\A\\(2) + Min. \\B\\(2) can be losslessly divided into two sub-domains that each can seek its own optimized solution separately (by two separate sets of processors without inter-communication during processing). Such a theorem of orthogonal division error (ODE) for lossless D&C is proved, and the orthogonal projection is constructed for solving a large-scale TSP explicitly. C1 FLORIDA STATE UNIV,FAMU,COLL ENGN,DEPT ELECT ENGN,TALLAHASSEE,FL 32316. USN,CTR SURFACE WARFARE,DAHLGREN DIV,WHITE OAK,MD 20309. NR 22 TC 1 Z9 1 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0925-2312 J9 NEUROCOMPUTING JI Neurocomputing PD AUG PY 1995 VL 8 IS 3 BP 249 EP 261 DI 10.1016/0925-2312(94)00028-Q PG 13 WC Computer Science, Artificial Intelligence SC Computer Science GA RQ640 UT WOS:A1995RQ64000002 ER PT J AU LIN, HB CAMPILLO, AJ AF LIN, HB CAMPILLO, AJ TI RADIAL PROFILING OF MICRODROPLETS USING CAVITY-ENHANCED RAMAN-SPECTROSCOPY SO OPTICS LETTERS LA English DT Article ID MORPHOLOGY-DEPENDENT RESONANCES; SCATTERING; DROPLETS; MICROPARTICLES; SPECTRA AB The composition of 7.7-mu m-radius methanol-water droplets was radially resolved by cavity-enhanced Raman spectroscopy. Optical cavity modes, encompassing well-defined radial zones within each droplet, were sequentially excited by a 514.5-nm laser beam to generate spontaneous Raman scattered light. The cavity-enhanced Raman spectral peaks gave information as to the identity and amount of species present. The measured radial and time dependence of the methanol concentration agreed with a diffusion-limited evaporation mode. RP LIN, HB (reprint author), USN,RES LAB,OPT PHYS BRANCH,WASHINGTON,DC 20375, USA. NR 16 TC 32 Z9 32 U1 0 U2 4 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0146-9592 J9 OPT LETT JI Opt. Lett. PD AUG 1 PY 1995 VL 20 IS 15 BP 1589 EP 1591 DI 10.1364/OL.20.001589 PG 3 WC Optics SC Optics GA RM760 UT WOS:A1995RM76000001 PM 19862092 ER PT J AU GOLDBERG, L KLINER, DAV AF GOLDBERG, L KLINER, DAV TI TUNABLE UV GENERATION AT 286 NM BY FREQUENCY TRIPLING OF A HIGH-POWER MODE-LOCKED SEMICONDUCTOR-LASER SO OPTICS LETTERS LA English DT Article ID LIGHT; CW AB We produced ultraviolet radiation by frequency tripling the mode-locked emission of an external cavity laser containing a tapered GaAlAs amplifier gain element. The 429-nm second harmonic produced by a KNbO3 crystal was sum-frequency mixed with the 858-nm fundamental in a Li3BO5 crystal, generating as much as 50 mu W of power at 286 nm. (C) 1995 Optical Society of America. C1 HARVARD UNIV, DEPT EARTH & PLANETARY SCI, CAMBRIDGE, MA 02138 USA. RP GOLDBERG, L (reprint author), USN, RES LAB, WASHINGTON, DC 20375 USA. NR 26 TC 27 Z9 27 U1 1 U2 4 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA SN 0146-9592 J9 OPT LETT JI Opt. Lett. PD AUG 1 PY 1995 VL 20 IS 15 BP 1640 EP 1642 DI 10.1364/OL.20.001640 PG 3 WC Optics SC Optics GA RM760 UT WOS:A1995RM76000018 PM 19862109 ER PT J AU OBRIEN, F HAMMEL, SE NGUYEN, CT AF OBRIEN, F HAMMEL, SE NGUYEN, CT TI A TEST FOR RANDOMNESS IN 3 DIMENSIONS SO PERCEPTUAL AND MOTOR SKILLS LA English DT Article AB A mathematical method based on a nearest neighbor spatial Poisson process is described for assessing stochastic randomness in three-dimensional Euclidean space. The classical central limit theorem is invoked to obtain a normal approximation formula for testing the hypothesis of randomness. The performance of the method is evaluated with Monte Carlo simulations. A brief description is given of the software employed for implementation of the method in practice. RP OBRIEN, F (reprint author), USN,DIV UNDERSEA WARFARE CTR,CODE 2211,B 117-1,1176 HOWELL ST,NEWPORT,RI 02841, USA. NR 8 TC 2 Z9 2 U1 0 U2 0 PU PERCEPTUAL MOTOR SKILLS PI MISSOULA PA PO BOX 9229, MISSOULA, MT 59807 SN 0031-5125 J9 PERCEPT MOTOR SKILL JI Percept. Mot. Skills PD AUG PY 1995 VL 81 IS 1 BP 115 EP 119 PG 5 WC Psychology, Experimental SC Psychology GA RV641 UT WOS:A1995RV64100022 ER PT J AU OBRIEN, F AF OBRIEN, F TI MEASURING THE AREAL DENSITY OF A FINITE ENSEMBLE SO PERCEPTUAL AND MOTOR SKILLS LA English DT Article AB A nem measure A(p) is introduced for estimating density in spatial ecological studies. The measure is constructed from the ratio of the area of a convex hull relative co a reference containing region. The measurement of the area is demonstrated with the Surveyor's Area Formula, Hero's Formula, and Pick's Theorem. Research applications of the measure are outlined. RP OBRIEN, F (reprint author), USN,DIV UNDERSEA WARFARE CTR,CODE 2211,B 1171-1,1176 HOWELL ST,NEWPORT,RI 02841, USA. NR 4 TC 0 Z9 0 U1 0 U2 0 PU PERCEPTUAL MOTOR SKILLS PI MISSOULA PA PO BOX 9229, MISSOULA, MT 59807 SN 0031-5125 J9 PERCEPT MOTOR SKILL JI Percept. Mot. Skills PD AUG PY 1995 VL 81 IS 1 BP 195 EP 200 PG 6 WC Psychology, Experimental SC Psychology GA RV641 UT WOS:A1995RV64100037 ER PT J AU LINNVILLE, SE AF LINNVILLE, SE TI BRAIN-EMITTED EVENT-RELATED POTENTIALS RECORDED DURING RAPID DECISION-MAKING MAY BE USEFUL IN MONITORING THE NEUROPATHOGENESIS OF THE HUMAN-IMMUNODEFICIENCY-VIRUS (HIV) SO PERCEPTUAL AND MOTOR SKILLS LA English DT Article AB Event-related potentials recorded from HIV-infected patients while they detected oddball targets during rapid delivery oi dual sequences of tones showed the complete absence of the late, 300-msec., positive (P300) component, suggesting an alteration in the neuronal activity underlying cognitive processing. C1 USN,HLTH RES CTR,SAN DIEGO,CA. NR 7 TC 1 Z9 1 U1 0 U2 0 PU PERCEPTUAL MOTOR SKILLS PI MISSOULA PA PO BOX 9229, MISSOULA, MT 59807 SN 0031-5125 J9 PERCEPT MOTOR SKILL JI Percept. Mot. Skills PD AUG PY 1995 VL 81 IS 1 BP 209 EP 210 PG 2 WC Psychology, Experimental SC Psychology GA RV641 UT WOS:A1995RV64100040 PM 8532457 ER PT J AU SINGH, S AF SINGH, S TI SPECTROSCOPY FERRETS OUT CONTAMINANTS IN FUEL AND OIL SO PHOTONICS SPECTRA LA English DT Editorial Material RP SINGH, S (reprint author), USN,DEPT AVIAT,SAN DIEGO,CA 92152, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU LAURIN PUBL CO INC PI PITTSFIELD PA BERKSHIRE COMMON PO BOX 1146, PITTSFIELD, MA 01202 SN 0731-1230 J9 PHOTON SPECTRA JI Photon. Spect. PD AUG PY 1995 VL 29 IS 8 BP 97 EP 98 PG 2 WC Optics SC Optics GA RM942 UT WOS:A1995RM94200050 ER PT J AU RAJAGOPAL, AK AF RAJAGOPAL, AK TI EXCLUSION STATISTICS - DENSITY-MATRIX AND ITS IMPLICATIONS SO PHYSICA B LA English DT Article; Proceedings Paper CT Workshop on Novel Physics in Low-Dimensional Electron Systems CY JAN 09-14, 1995 CL INST MATH SCI, MADRAS, INDIA SP Inst Math Sci, Madras, Govt India, Dept Sci & Technol, Govt India, Council Sci & Ind Res, Alexander von Humboldt Fdn, Bonn, Germany, Int Ctr Theoret Phys, Trieste Italy HO INST MATH SCI AB We obtain the density matrix associated with the Haldane exclusion statistics with parameter g in terms of the mean occupation number, ($) over bar n. From this we obtain the second- and third-order fluctuations in the occupation numbers for arbitrary g. The von Neumann entropy is explicitly constructed. An elegant general duality relationship between the ($) over bar n-factor associated with the particle for a given g and that associated with that of the hole at the reciprocal g is deduced along with attendant relationship between the two respective entropies. This duality is more general than the one given in the literature, albeit equivalent to it in the special case of thermodynamic equilibrium. We also give similar results within the Tsallis entropy formalism which is expected to be useful when the particles are in nanostructures whose spatial dimensions are small compared to the range of interactions, and the system is not expected to be extensive. RP RAJAGOPAL, AK (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 16 TC 15 Z9 15 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 J9 PHYSICA B JI Physica B PD AUG PY 1995 VL 212 IS 3 BP 309 EP 314 DI 10.1016/0921-4526(95)00047-D PG 6 WC Physics, Condensed Matter SC Physics GA RT417 UT WOS:A1995RT41700022 ER PT J AU HEAGY, JF CARROLL, TL PECORA, LM AF HEAGY, JF CARROLL, TL PECORA, LM TI DESYNCHRONIZATION BY PERIODIC-ORBITS SO PHYSICAL REVIEW E LA English DT Note ID CHAOTIC SYSTEMS AB Synchronous chaotic behavior is often interrupted by bursts of desynchronized behavior. We investigate the role of unstable periodic orbits in bursting events and show that they serve as sources of local transverse instability within a synchronous chaotic attractor. Analysis of bursts in both model and experimental studies of two coupled Rossler-like oscillators reveals the importance of unstable periodic orbits in bursting events. RP HEAGY, JF (reprint author), USN,RES LAB,CODE 6341,WASHINGTON,DC 20375, USA. NR 16 TC 144 Z9 145 U1 0 U2 3 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1063-651X J9 PHYS REV E JI Phys. Rev. E PD AUG PY 1995 VL 52 IS 2 BP R1253 EP R1256 PG 4 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA RQ377 UT WOS:A1995RQ37700001 ER PT J AU KAIHATU, JM KIRBY, JT AF KAIHATU, JM KIRBY, JT TI NONLINEAR TRANSFORMATION OF WAVES IN FINITE WATER DEPTH SO PHYSICS OF FLUIDS LA English DT Article ID REFRACTION-DIFFRACTION; SHALLOW-WATER; SURFACE-WAVES; EVOLUTION AB The formulation of a nonlinear frequency domain parabolic mild-slope model is detailed. The resulting model describes two-dimensional wave transformation and nonlinear coupling between frequency components. Linear dispersion and transformation characteristics are dictated by fully-dispersive linear theory, an improvement over weakly-dispersive Boussinesq theory. Both the present model and a weakly-dispersive nonlinear frequency domain model are compared to laboratory data for both two-dimensional wave transformation and pure shoaling. It is found that, in general, data-model comparisons are enhanced by the present model, particularly in instances where the wave condition is outside the shallow water range. (C) 1995 American Institute of Physics. C1 UNIV DELAWARE,DEPT CIVIL ENGN,CTR APPL COASTAL RES,NEWARK,DE 19716. RP KAIHATU, JM (reprint author), USN,RES LAB,FLUID DYNAM BRANCH,DIV REMOTE SENSING,CODE 7253,WASHINGTON,DC 20375, USA. RI Kaihatu, James/H-7561-2016 OI Kaihatu, James/0000-0002-9277-6409 NR 25 TC 59 Z9 59 U1 0 U2 3 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 1070-6631 J9 PHYS FLUIDS JI Phys. Fluids PD AUG PY 1995 VL 7 IS 8 BP 1903 EP 1914 DI 10.1063/1.868504 PG 12 WC Mechanics; Physics, Fluids & Plasmas SC Mechanics; Physics GA RL706 UT WOS:A1995RL70600009 ER PT J AU ZIMMERMAN, RC KOHRS, DG STELLER, DL ALBERTE, RS AF ZIMMERMAN, RC KOHRS, DG STELLER, DL ALBERTE, RS TI CARBON PARTITIONING IN EELGRASS - REGULATION BY PHOTOSYNTHESIS AND THE RESPONSE TO DAILY LIGHT-DARK CYCLES SO PLANT PHYSIOLOGY LA English DT Article ID SUCROSE-PHOSPHATE SYNTHASE; MARINA L EELGRASS; DIURNAL CHANGES; SUGAR-BEET; LEAVES; MAIZE; ENZYMES; GROWTH; TISSUE; HCO3 AB Diel variations in rates of C export, sucrose-phosphate synthase (SPS) and sucrose synthase (SS) activity, and C reserves were investigated in Zostera marina L. (eelgrass) to elucidate the environmental regulation of sucrose formation and partitioning in this ecologically important species. Rates of C flux and SPS activity increased with leaf age, consistent with the ontogenic transition from sink to source status. Rates of C export and photosynthesis were low but quantitatively consistent with those of many terrestrial plant species. The V-max activity of SPS approached that of maize, but substrate-limited rates were 20 to 25% of V-max, indicating a large pool of inactive SPS. SPS was unresponsive to the day/night transition or to a 3-fold increase in photosynthesis generated by high [CO2] and showed little sensitivity to inorganic phosphate. Consequently, regulation of eelgrass SPS appeared similar to starch- rather than to sugar-accumulating species even though eelgrass accumulates sucrose. Leaf [sucrose] was constant and high throughout the diel cycle, which may contribute to the down-regulation of SPS. Root sucrose synthase activity was high but showed no response to nocturnal anoxia. Root [sucrose] also showed no diel cycle. The temporal stability of [sucrose] confers an ability for eelgrass to buffer the effects of prolonged light limitation that may be key to its survival and ecological success in environments subject to periods of extreme light limitation and chaotic daily variation in light availability. C1 OFF NAVAL RES,BIOL SCI & TECHNOL PROGRAM,ARLINGTON,VA 22217. RP ZIMMERMAN, RC (reprint author), UNIV CALIF LOS ANGELES,DEPT BIOL,LOS ANGELES,CA 90024, USA. NR 37 TC 50 Z9 51 U1 0 U2 8 PU AMER SOC PLANT PHYSIOLOGISTS PI ROCKVILLE PA 15501 MONONA DRIVE, ROCKVILLE, MD 20855 SN 0032-0889 J9 PLANT PHYSIOL JI Plant Physiol. PD AUG PY 1995 VL 108 IS 4 BP 1665 EP 1671 PG 7 WC Plant Sciences SC Plant Sciences GA RN848 UT WOS:A1995RN84800038 ER PT J AU SHIFLETT, JE LUNCEFORD, WH WILLIS, RP AF SHIFLETT, JE LUNCEFORD, WH WILLIS, RP TI APPLICATION OF DISTRIBUTED INTERACTIVE SIMULATION TECHNOLOGY WITHIN THE DEPARTMENT-OF-DEFENSE SO PROCEEDINGS OF THE IEEE LA English DT Article AB This paper focuses on distributed interactive simulation (DIS) as an emerging technology which offers new opportunities for the Department of Defense in the design of simulation systems, the approach to training, and the improvement of the materiel acquisition process. Discussion of these topics is followed by an overview of selected Department of Defense programs that employ DIS. The paper concludes with a brief discussion of technology challenges that must be overcome for this technology to reach its full potential. C1 USN,CTR WARFARE,DIV TRAINING SYST,TRAINING TECHNOL APPLICAT BRANCH,ORLANDO,FL 32826. RP SHIFLETT, JE (reprint author), USA,TRAINING & INSTRUMENTAT COMMAND,ORLANDO,FL 32826, USA. NR 15 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 0018-9219 J9 P IEEE JI Proc. IEEE PD AUG PY 1995 VL 83 IS 8 BP 1168 EP 1178 DI 10.1109/5.400456 PG 11 WC Engineering, Electrical & Electronic SC Engineering GA RM615 UT WOS:A1995RM61500006 ER PT J AU DESCHAMPS, JR MILLER, CE WARD, KB AF DESCHAMPS, JR MILLER, CE WARD, KB TI RAPID PURIFICATION OF RECOMBINANT GREEN FLUORESCENT PROTEIN USING THE HYDROPHOBIC PROPERTIES OF AN HPLC SIZE-EXCLUSION COLUMN SO PROTEIN EXPRESSION AND PURIFICATION LA English DT Article ID EXPRESSION AB The green fluorescent protein (GFP) of the jelly fish Aequoria victoria was cloned into an Escherichia coli cell line that is a methionine auxotroph. The recombinant GFP (rGFP) was isolated from the cells and purified using a simple procedure consisting of only two chromatographic steps: size-exclusion chromatography and ion-exchange HPLC. Due to the hydrophobic nature of the protein, the surface characteristics of the HPLC size column, and the high initial salt concentration, the rGFP sticks to the size column and is eluted by reducing the salt concentration. Due to this unique behavior the purification procedure can readily be scaled to handle larger quantities of rGFP. (C) 1995 Academic Press, Inc. RP DESCHAMPS, JR (reprint author), USN, RES LAB, CODE 6030, WASHINGTON, DC 20375 USA. NR 8 TC 39 Z9 39 U1 4 U2 18 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 1046-5928 EI 1096-0279 J9 PROTEIN EXPRES PURIF JI Protein Expr. Purif. PD AUG PY 1995 VL 6 IS 4 BP 555 EP 558 DI 10.1006/prep.1995.1073 PG 4 WC Biochemical Research Methods; Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology SC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology GA RM609 UT WOS:A1995RM60900023 PM 8527943 ER PT J AU AARONSON, HI HIRTH, JP AF AARONSON, HI HIRTH, JP TI ON THE THERMODYNAMICS OF PRECIPITATE PLATE FORMATION BY SHEAR ABOVE T-O ASSISTED BY SOLUTE ADSORPTION EFFECTS SO SCRIPTA METALLURGICA ET MATERIALIA LA English DT Article ID ZN-AL ALLOY; BAINITIC TRANSFORMATION; MARTENSITIC NUCLEATION; GENERAL MECHANISM; C ALLOYS; FERRITE C1 WASHINGTON STATE UNIV,DEPT MECH & MAT ENGN,PULLMAN,WA 99164. RP AARONSON, HI (reprint author), USN,RES LAB,PHYS MET BRANCH,GEICENTERS INC,CODE 6320,WASHINGTON,DC 20375, USA. NR 39 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 AUG 1 PY 1995 VL 33 IS 3 BP 347 EP 353 DI 10.1016/0956-716X(95)00222-H PG 7 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA RK597 UT WOS:A1995RK59700002 ER PT J AU PAO, PS MEYN, DA BAYLES, RA FENG, CR YODER, GR AF PAO, PS MEYN, DA BAYLES, RA FENG, CR YODER, GR TI EFFECT OF RIPPLE LOADS ON SUSTAINED-LOAD CRACKING IN TITANIUM-ALLOYS SO SCRIPTA METALLURGICA ET MATERIALIA LA English DT Article ID STRESS-CORROSION CRACKING C1 OFF NAVAL RES,ARLINGTON,VA 22217. RP PAO, PS (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 16 TC 6 Z9 6 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 1 PY 1995 VL 33 IS 3 BP 497 EP 501 DI 10.1016/0956-716X(95)00220-P PG 5 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA RK597 UT WOS:A1995RK59700024 ER PT J AU GOINS, B KLIPPER, R SANDERS, J CLIFF, RO RUDOLPH, AS PHILLIPS, WT AF GOINS, B KLIPPER, R SANDERS, J CLIFF, RO RUDOLPH, AS PHILLIPS, WT TI PHYSIOLOGICAL-RESPONSES, ORGAN DISTRIBUTION, AND CIRCULATION KINETICS IN ANESTHETIZED RATS AFTER HYPOVOLEMIC EXCHANGE-TRANSFUSION WITH TC-99M-LABELED LIPOSOME-ENCAPSULATED HEMOGLOBIN SO SHOCK LA English DT Article ID TC-99M-LABELED LIPOSOME; INVIVO; FLUID AB Physiological responses and circulation properties of liposome-encapsulated hemoglobin (LEH) labeled with technetium-99m Tc-99m) were measured in rats after a 10% (170 mg/kg hemoglobin, 430 mg/kg phospholipid) or a 50% (450 mg/kg hemoglobin, 2.3 g/kg phospholipid) hypovolemic exchange transfusion (n = 5 per exchange group). Mean arterial pressure returned to baseline values (105 +/- 8 mmHg) by 90 min post-infusion for both groups. By 20 h, mean arterial pressure remained at baseline values for the 10% group, but dropped to 30 +/- 14 mmHg for the 50% group. For both groups, bradycardia was seen after the exchange period, but heart rate recovered by 30 min for the 10% group and by 90 min for the 50% group. The (99m) Tc-99m-LEH remained in circulation longer for the 50% group (18.2 h half-life) than for the 10% group (2.4 h half-life). Removal of Tc-99m-LEK from the bloodstream was via the liver and spleen. At 20 h, Tc-99m-LEH accumulation in these organs was greater for the 10% group (liver, 36.2 +/- 1.7%; spleen, 37.5 +/- 2.5%) than for the 50% group (liver, 17.0 +/- 1.4%; spleen, 17.1 +/- 1.4%). The data show that there is less clearance of Tc-99m-LEH from the bloodstream by the reticuloendothelial system after a 50% hypovolemic exchange transfusion, thus supporting the possible use of LEH as an oxygen-carrying resuscitative fluid in situations of severe blood loss. C1 UNIV TEXAS,HLTH SCI CTR,DEPT RADIOL,SAN ANTONIO,TX 78284. USN,RES LAB,CTR BIOMOLEC SCI & ENGN,WASHINGTON,DC 20375. RI Goins, Beth/F-1311-2010; Phillips, William/E-8427-2010 OI Phillips, William/0000-0001-8248-7817 NR 35 TC 16 Z9 16 U1 0 U2 0 PU BIOMEDICAL PRESS PI AUGUSTA PA 1021 15TH ST, BIOTECH PARK STE 9, AUGUSTA, GA 30901 SN 1073-2322 J9 SHOCK JI Shock PD AUG PY 1995 VL 4 IS 2 BP 121 EP 130 DI 10.1097/00024382-199508000-00008 PG 10 WC Critical Care Medicine; Hematology; Surgery; Peripheral Vascular Disease SC General & Internal Medicine; Hematology; Surgery; Cardiovascular System & Cardiology GA RN500 UT WOS:A1995RN50000009 PM 7496897 ER PT J AU SCHREIBER, LR CRAIG, TJ AF SCHREIBER, LR CRAIG, TJ TI HICCUPS DUE TO GASTROESOPHAGEAL REFLUX - REPLY SO SOUTHERN MEDICAL JOURNAL LA English DT Letter C1 UNIV IOWA HOSP & CLIN,DEPT INTERNAL MED,DIV ALLERGY IMMUNOL,IOWA CITY,IA 52242. RP SCHREIBER, LR (reprint author), USN HOSP,DEPT FAMILY PRACTICE,29 PALMS,SAN DIEGO,CA 92134, USA. NR 4 TC 0 Z9 0 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 AUG PY 1995 VL 88 IS 8 BP 894 EP 894 PG 1 WC Medicine, General & Internal SC General & Internal Medicine GA RM717 UT WOS:A1995RM71700031 ER PT J AU WAHL, KJ SEITZMAN, LE BOLSTER, RN SINGER, IL AF WAHL, KJ SEITZMAN, LE BOLSTER, RN SINGER, IL TI LOW-FRICTION, HIGH-ENDURANCE, ION-BEAM-DEPOSITED PB-MO-S COATINGS SO SURFACE & COATINGS TECHNOLOGY LA English DT Article DE ION BEAM DEPOSITION; PB-MO-S COATINGS ID ASSISTED DEPOSITION; LUBRICANT FILMS; BEHAVIOR; LIFE AB Thin solid lubricating coatings of Pb-Mo-S were deposited on steel substrates via ion-beam deposition. Coating endurance and friction coefficients under dry air sliding conditions were monitored with ball-on-disk tests; additional tribological testing was performed using a ball-on-flat reciprocating test rig to investigate intermediate sliding distances (100-32000 cycles). Rutherford backscattering spectrometry (RES), X-ray diffraction (XRD), scanning Anger microscopy and micro-Raman spectroscopy were used to examine the structure, composition and chemistry of the coatings. Worn surfaces were characterized by optical microscopy and micro-Raman spectroscopy. The average endurance (at 1.4 GPa stress) of ion-beam-deposited (IBD) Pb-Mo-S coatings (thickness, 160-830 nm) containing 4-26 at.% Pb was 160 000 revolutions, more than twice that of MoS2 coatings obtained by ion-beam-assisted deposition. In addition, the IBD Pb-Mo-S coatings had friction coefficients between 0.005 and 0.02, similar to the MoS2 coatings obtained by ion-beam-assisted deposition. Friction coefficients were monitored as a function of the contact stress and found to obey the hertzian contact model; measured interfacial shear strengths (S-0 approximate to 12 MPa) were similar to those observed for MoS2 coatings. Although XRD and micro-Raman spectroscopy indicated that the IBD Pb-Mo-S coatings were initially amorphous, micro-Raman spectroscopy showed that crystalline MoS, was produced both in the wear tracks on coatings and in the transfer films on balls after as few as 100 sliding cycles. The wear resistance and low-friction properties of IBD Pb-Mo-S coatings are attributed to the combination of dense, adherent coatings and the formation of easily sheared, MoS2-containing sliding surfaces. RP WAHL, KJ (reprint author), USN,RES LAB,CODE 6170,WASHINGTON,DC 20375, USA. OI Wahl, Kathryn/0000-0001-8163-6964 NR 38 TC 70 Z9 73 U1 1 U2 7 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0257-8972 J9 SURF COAT TECH JI Surf. Coat. Technol. PD AUG PY 1995 VL 73 IS 3 BP 152 EP 159 DI 10.1016/0257-8972(94)02383-2 PG 8 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA RL412 UT WOS:A1995RL41200003 ER PT J AU NARAYAN, P GAJENDRAN, V TAYLOR, SP TEWARI, A PRESTI, JC LEIDICH, R LO, R PALMER, K SHINOHARA, K SPAULDING, JT AF NARAYAN, P GAJENDRAN, V TAYLOR, SP TEWARI, A PRESTI, JC LEIDICH, R LO, R PALMER, K SHINOHARA, K SPAULDING, JT TI THE ROLE OF TRANSRECTAL ULTRASOUND-GUIDED BIOPSY-BASED STAGING, PREOPERATIVE SERUM PROSTATE-SPECIFIC ANTIGEN, AND BIOPSY GLEASON SCORE IN PREDICTION OF FINAL PATHOLOGICAL DIAGNOSIS IN PROSTATE-CANCER SO UROLOGY LA English DT Article ID RADICAL PROSTATECTOMY; SURGICAL MARGIN; CLINICAL STAGE; TUMOR GRADE; ADENOCARCINOMA; INVOLVEMENT; RADIATION; CARCINOMA; ACCURACY; THERAPY AB Objectives. To evaluate the role of ultrasound-guided systematic and lesion-directed biopsies, biopsy Gleason score, and preoperative serum prostate-Specific antigen (PSA) as three objective and reproducible variables to provide a reliable combination in preoperative identification of risk of extraprostatic extension in patients with clinically localized prostate cancer. Methods. The case records of 813 patients who underwent radical prostatectomy for clinically localized prostate cancer were analyzed. All had multiple systematic biopsies, two to three from each lobe, in addition to lesion-directed biopsies. Additionally, biopsies were done on seminal vesicles (SVs), if abnormal. Based on biopsy results, patients were classified as having Stage B1 (T2a-T2b) or B2 (T2c) disease, depending on whether biopsies from one or both lobes were positive and Stage C (T3) if there was evidence of SV involvement by biopsy or biopsies from areas of extracapsular extension as seen on transrectal ultrasound (TRUS) were positive. Logistic regression analyses with log likelihood chi-square test was used to define the correlation between individual as well as combination of preoperative variables and pathologic stage. Results. On final pathologic examination, 473 (58%) patients had organ-confined disease, 188 (23%) had extracapsular extension (ECE), with or without positive surgical margins, and 72 (9%) had SV involvement. Eighty (10%) patients had pelvic lymph node metastases. Biopsy-based staging was superior to clinical staging in predicting final pathologic diagnosis. Logistic regression analyses revealed that the combination of biopsy-based stage, preoperative serum PSA, and biopsy Gleason score provided the best prediction of final pathologic stage. Probability plots constructed with these data can provide significant information on risk of extraprostatic extension in individual patients. Conclusions. This study demonstrates that TRUS-guided systematic biopsy in combination with preoperative serum PSA and biopsy Gleason score may provide a cost-effective approach for management decisions and prognostication in patients with prostate cancer. C1 STANFORD UNIV,PALO ALTO,CA 94304. UNIV CALIF SAN FRANCISCO,SCH MED,SAN FRANCISCO,CA 94143. ST FRANCIS MEM HOSP,SAN FRANCISCO,CA 94109. MT DIABLO MED CTR,CONCORD,CA 94520. USN HOSP,OAKLAND,CA. KAISER HOSP,SANTA ROSA,CA. RP NARAYAN, P (reprint author), UNIV FLORIDA,DEPT UROL,DIV UROL,POB 100247,GAINESVILLE,FL 32610, USA. NR 43 TC 134 Z9 139 U1 1 U2 4 PU CAHNERS PUBL CO PI NEW YORK PA 249 WEST 17 STREET, NEW YORK, NY 10011 SN 0090-4295 J9 UROLOGY JI UROLOGY PD AUG PY 1995 VL 46 IS 2 BP 205 EP 212 DI 10.1016/S0090-4295(99)80195-2 PG 8 WC Urology & Nephrology SC Urology & Nephrology GA RM641 UT WOS:A1995RM64100015 PM 7542823 ER PT J AU MEYER, JR HOFFMAN, CA BARTOLI, FJ RAMMOHAN, LR AF MEYER, JR HOFFMAN, CA BARTOLI, FJ RAMMOHAN, LR TI INTERSUBBAND 2ND-HARMONIC GENERATION WITH VOLTAGE-CONTROLLED PHASE-MATCHING SO APPLIED PHYSICS LETTERS LA English DT Article ID QUANTUM-WELLS; TRANSITIONS AB We propose an intersubband-based frequency-mixing device in which phase matching is imposed electrically. The dynamic tuning considerably relaxes fabrication tolerances, allows compensation for the intensity dependence of the index, and enables phase-matched operation at a range of degenerate and nondegenerate pump wavelengths. (C) 1995 American Institute of Physics. C1 WORCESTER POLYTECH INST,WORCESTER,MA 01609. RP MEYER, JR (reprint author), USN,RES LAB,CODE 5613,WASHINGTON,DC 20375, USA. RI Ram-Mohan, Ramdas/C-5167-2012 NR 16 TC 9 Z9 9 U1 1 U2 2 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD JUL 31 PY 1995 VL 67 IS 5 BP 608 EP 610 DI 10.1063/1.115404 PG 3 WC Physics, Applied SC Physics GA RL976 UT WOS:A1995RL97600011 ER PT J AU WEATHERFORD, TR MCMORROW, D CAMPBELL, AB CURTICE, WR AF WEATHERFORD, TR MCMORROW, D CAMPBELL, AB CURTICE, WR TI SIGNIFICANT REDUCTION IN THE SOFT ERROR SUSCEPTIBILITY OF GAAS FIELD-EFFECT TRANSISTORS WITH A LOW-TEMPERATURE-GROWN GAAS BUFFER LAYER SO APPLIED PHYSICS LETTERS LA English DT Article ID INDUCED CHARGE COLLECTION; MESFETS; CIRCUITS; MODEL AB The use of a low temperature grown GaAs buffer layer beneath the channel of a metal-semiconductor field-effect transistor is shown via computer simulation to reduce ion-induced charge collection by two or more orders of magnitude. This reduction in collected charge is expected to reduce the heavy ion soft error rate by four to seven orders of magnitude in GaAs integrated circuits, and could have significant implications for the applicability of GaAs technology in space-based systems. (C) 1995 American Institute of Physics. C1 USN,RES LAB,WASHINGTON,DC 20375. WR CURTICE CONSULTING,PRINCETON JCT,NJ 08550. RP WEATHERFORD, TR (reprint author), SFA INC,LANDOVER,MD 20785, USA. NR 25 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 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD JUL 31 PY 1995 VL 67 IS 5 BP 703 EP 705 DI 10.1063/1.115280 PG 3 WC Physics, Applied SC Physics GA RL976 UT WOS:A1995RL97600043 ER PT J AU RIZOS, AK JOHNSEN, RM BROWN, W NGAI, KL AF RIZOS, AK JOHNSEN, RM BROWN, W NGAI, KL TI COMPONENT DYNAMICS IN POLYSTYRENE BIS(2-ETHYLHEXYL) PHTHALATE SOLUTIONS BY POLARIZED AND DEPOLARIZED LIGHT-SCATTERING AND DIELECTRIC-SPECTROSCOPY SO MACROMOLECULES LA English DT Article ID SEGMENTAL RELAXATION; AROCLOR SOLUTIONS; MOLECULAR-DYNAMICS; POLYMER-SOLUTIONS; SOLVENT MOBILITY; BLENDS; DIFFUSION; MOTION AB Depolarized Rayleigh, polarized Rayleigh-Brillouin scattering, and dielectric spectroscopy have been used to resolve the dynamics of the two components in concentrated solutions of polystyrene (PS) in bis(2-ethylhexyl)phthalate (DOP) close to and above the glass transition temperature. Two distinct time scales of motion exist in the macroscopically homogeneous PS/DOP solutions which are associated with the faster solvent (DOP) and slower polymer (PS) dynamics with different temperature shift factors. The width and the degree of asymmetry of the distribution of relaxation times determined as a function of temperature for both components increase as temperature decreases, and also as the PS concentration increases, indicating that the contribution at a lower frequency has a larger temperature shift factor, alpha(T). The temperature dependencies of the most probable relaxation times, tau(iota) with iota = 1, 2, of both processes conform to the Vogel-Fulcher-Tammann (VFT) equation. These VFT dependencies for the two components, iota = 1, 2, in the mixture when replotted respectively against T-g iota/T, where T-g iota is the temperature at which tau(iota)(T-g iota) = 10(o) s, show a trend that can be expected from the enhancement (mitigation) of constraint dynamics of DOP (PS) with further addition of PS (DOP) to the mixture. There is an exact analogy between the current experimental findings in the mixture of polymer and small-molecule diluent and what we have found in the component dynamics in binary miscible polymer blends. Thus the physics in these two systems are similar. The Rayleigh-Brillouin experiment revealed the existence of an additional faster process associated with a localized motion of the phenyl group of the DOP molecule in the concentrated solutions in agreement with a previously reported study. C1 UNIV CRETE,FDN RES & TECHNOL HELLAS,GR-71409 IRAKLION,GREECE. UNIV UPPSALA,INST PHYS CHEM,S-75121 UPPSALA,SWEDEN. USN,RES LAB,WASHINGTON,DC 20375. RP RIZOS, AK (reprint author), UNIV CRETE,DEPT CHEM,POB 1527,GR-71409 IRAKLION,GREECE. RI Rizos, Apostolos/F-6807-2011 NR 40 TC 9 Z9 9 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0024-9297 J9 MACROMOLECULES JI Macromolecules PD JUL 31 PY 1995 VL 28 IS 16 BP 5450 EP 5457 DI 10.1021/ma00120a008 PG 8 WC Polymer Science SC Polymer Science GA RM940 UT WOS:A1995RM94000008 ER PT J AU TURNER, DC STRAUME, M KASIMOVA, MR GABER, BP AF TURNER, DC STRAUME, M KASIMOVA, MR GABER, BP TI THERMODYNAMICS OF INTERACTION OF THE FUSION-INHIBITING PEPTIDE Z-D-PHE-L-PHE-GLY WITH DIOLEOYLPHOSPHATIDYLCHOLINE VESICLES - DIRECT CALORIMETRIC DETERMINATION SO BIOCHEMISTRY LA English DT Article ID SENDAI VIRUS FUSION; PHOSPHOLIPID-VESICLES; AMINO ACIDS; TITRATION CALORIMETRY; HYDROPHOBIC PEPTIDES; PHASE-TRANSITIONS; MEMBRANE-FUSION; LIPID BILAYERS; BINDING; BEHAVIOR AB The binding of the fusion-inhibiting peptide Z-D-Phe-L-Phe-Gly to unilamellar lipid vesicles of dioleoylphosphatidylcholine (DOPC) was investigated by isothermal titration calorimetry (ITC). The peptide Z-D-Phe-L-Phe-Gly is known to inhibit fusion of myxo- and paramyxoviruses with cells as well as cell-cell and vesicle-vesicle fusion in model systems, Calorimetric titrations conducted over a range of temperatures permitted characterization of the thermodynamics of the interaction of Z-D-Phe-L-Phe-Gly with model DOPC lipid membranes. Simultaneous global analysis of 15 ITC binding curves acquired at four different temperatures allowed determination of the equilibrium site association constant (K), stoichiometry of binding (n), binding enthalpy change (Delta H), and heat capacity change of binding (Delta C-p) in a single set of experiments, The binding affinity and enthalpy change per mole of DOPC bound at 25 degrees C was log K = 2.463 +/- 0.075 and Delta H = -1.07 +/- 0.12 kcal/mol DOPC while the binding heat capacity change per mole of DOPC bound was Delta C-p = -20.3 +/- 2.8 cal/(K . mol DOPC) with a temperature dependence (from 10-45 degrees C) of d(Delta C-p)/dT = 0.37 +/- 0.18 call(K-2 . mol DOPC). A temperature-independent binding stoichiometry was determined to be n = 5.56 +/- 0.33 DOPC molecules per Z-D-Phe-L-Phe-Gly, A comparison of these results with previous peptide-lipid binding studies is discussed as is their relevance to a current model of the interaction of fusion-inhibiting peptides with phospholipid membranes. C1 UNIV VIRGINIA,NATL SCI FDN,CTR BIOL TIMING,DEPT MED,INTERDISCIPLINARY BIOPHYS PROGRAM,CHARLOTTESVILLE,VA 22903. JOHNS HOPKINS UNIV,DEPT BIOL,CTR BIOCALORIMETRY,BALTIMORE,MD 21218. RP TURNER, DC (reprint author), USN,RES LAB,CTR BIOMOLEC SCI & ENGN,CODE 6930,WASHINGTON,DC 20375, USA. FU NCRR NIH HHS [RR04328] NR 41 TC 17 Z9 17 U1 1 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0006-2960 J9 BIOCHEMISTRY-US JI Biochemistry PD JUL 25 PY 1995 VL 34 IS 29 BP 9517 EP 9525 DI 10.1021/bi00029a028 PG 9 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA RL610 UT WOS:A1995RL61000028 PM 7626621 ER PT J AU MCLEAN, EA BURRIS, HR STRAND, MP AF MCLEAN, EA BURRIS, HR STRAND, MP TI SHORT-PULSE RANGE-GATED OPTICAL IMAGING IN TURBID WATER SO APPLIED OPTICS LA English DT Article DE TURBID MEDIA IMAGING; LASER RANGE GATING; 3-DIMENSIONAL IMAGING AB Using a very short laser pulse and camera gate in a range-gated optical imaging system, we have demonstrated an improvement in imaging in turbid water. A 0.5-ns FWHM laser pulse at 532 nm and a camera gate time ranging down to 120 ps were used to record images of 0.635-cm-bar-resolution targets at 6.5 attenuation lengths through 4.572 m of turbid water. With a four-channel version of this camera, coupled to a CCD camera, we can observe a quasi-three-dimensional image in real time. C1 RES SUPPORT INSTRUMENTS INC,ALEXANDRIA,VA 22314. USN,CTR SURFACE WEAP,DIV DAHLGREN,PANAMA CITY,FL 32407. RP MCLEAN, EA (reprint author), USN,RES LAB,DIV PLASMA PHYS,LASER PLASMA BRANCH,CODE 6730,WASHINGTON,DC 20375, USA. NR 11 TC 41 Z9 53 U1 2 U2 9 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 20 PY 1995 VL 34 IS 21 BP 4343 EP 4351 PG 9 WC Optics SC Optics GA RL129 UT WOS:A1995RL12900026 PM 21052268 ER PT J AU HARRIS, MJ SHARE, GH MESSINA, DC AF HARRIS, MJ SHARE, GH MESSINA, DC TI LIMITS ON GALACTIC GAMMA-RAY LINES AT 4.44 MEV AND 6.13 MEV FROM NUCLEAR DEEXCITATION SO ASTROPHYSICAL JOURNAL LA English DT Article DE COSMIC RAYS; GALAXY, CENTER; GAMMA RAYS, OBSERVATIONS; ISM, ABUNDANCES ID RADIATION AB Inelastic collisions of low-energy cosmic-ray protons and alpha particles with interstellar C-12 and O-16 produce relatively narrow de-excitation lines at 4.44 and 6.13 MeV (FWHM similar to 100 keV); impacts of cosmic-ray C-12 and O-16 nuclei on interstellar H atoms produce broad lines at these energies (FWHM similar or equal to 1 MeV). Such broad-line emission, at a level similar or equal to 5 x 10(-5) gamma (cm(2) s)(-1) at 4.44 MeV and similar or equal to 3 x 10(-5) gamma (cm(2) s)(-1) at 6.13 MeV, was recently reported from the Orion Nebula by the COMPTEL instrument aboard the Compton Gamma Ray Observatory. We have used over 9 years of data from the Gamma Ray Spectrometer experiment on the Solar Maximum Mission satellite to search for both narrow and broad lines from the directions of the Galactic center and anticenter, with C-12* and O-16* line intensities fixed in the ratios expected from theory and observed by COMPTEL. No emission was detected in either broad or narrow lines from any source. Our 3 a upper limits on the combined emission from C-12* and O-16* are 8.7 x 10(-5) gamma (cm(2) s rad)(-1) for narrow lines from the central radian of the Galaxy, 3.0 x 10(-4) gamma (cm(2) s rad)(-1) for broad lines from the same direction, and 3.0 x 10(-4) gamma (cm(2) s)(-1) for broad lines from a point source in the direction of Orion. Our results suggest that the Galactic distribution of Orion-like sources does not follow the expected dependence on the square of the CO abundance and, in particular, that the C-12 and O-16 abundances in the cosmic rays accelerated in Orion-like sources are not proportional to the ambient CO abundance. We also place constraints on the fraction of Galactic Al-26 which can be due to cosmic-ray spallation reactions. C1 USN, RES LAB, EO HULBURT CTR SPACE RES, WASHINGTON, DC 20375 USA. SFA INC, LANDOVER, MD 20785 USA. RP HARRIS, MJ (reprint author), UNIV SPACE RES ASSOC, 300 D ST SW, SUITE 801, WASHINGTON, DC 20024 USA. NR 22 TC 12 Z9 12 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUL 20 PY 1995 VL 448 IS 1 BP 157 EP 163 DI 10.1086/175948 PN 1 PG 7 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA RJ489 UT WOS:A1995RJ48900013 ER PT J AU ULMER, MP MATZ, SM GRABELSKY, DA GROVE, JE STRICKMAN, MS MUCH, R BUSETTA, MC STRONG, A KUIPER, L THOMPSON, DJ BERTSCH, D FIERRO, JM NOLAN, PL AF ULMER, MP MATZ, SM GRABELSKY, DA GROVE, JE STRICKMAN, MS MUCH, R BUSETTA, MC STRONG, A KUIPER, L THOMPSON, DJ BERTSCH, D FIERRO, JM NOLAN, PL TI COMPTON GAMMA-RAY OBSERVATORY OBSERVATIONS OF THE CRAB PULSAR SO ASTROPHYSICAL JOURNAL LA English DT Article DE GAMMA RAYS, OBSERVATIONS; PULSARS, INDIVIDUAL (CRAB PULSAR) ID RAPIDLY SPINNING PULSARS; INSTRUMENT DESCRIPTION; ENERGETIC RADIATION; TELESCOPE; NEBULA AB We present Crab pulsar light curves and spectra over the similar to 50 keV to 10 GeV range from Compton Gamma-Ray Observatory observations made during MJD 48,373-48,406 (1991 April 27-1991 May 30 except for COMPTEL which started observations on April 28). The overall pulse phase-averaged spectrum is not well fitted by a single power law, but a broken power law does fit well, of the form F = A(E/E(B))((-alpha 1)); A(E/E(R))(-alpha 2) photons cm(-2) s(-1) MeV(-1) fits well (chi(min)(2), = 16, 26 degrees of freedom [dof]), where alpha(1) is the spectral index for E less than or equal to E(B) and alpha(2) for E > E(B). For the normalization values to the spectra quoted here, we report phase-averaged intensities, and we applied an estimate to the uncertainty of the absolute calibration of 10%. The best-fit values for the parameters with 68% uncertainties are A = 0.064 +/- 0.006, E(B) = 0.12 +/- 0.03 MeV, alpha(1) = 1.71(+0.15)(-0.19), and alpha(2) = 2.21 +/- 0.02. The outer gap model (with gap parameter equal to 0.38, and a normalization factor of 1.08) provided to us by Ho describes the data with an accuracy of better than 20%, but the formal chi(min)(2), is too high with a value of 68 for 28 dof. We derive a statistically equivalent result for the broken power law when we include lower energy data from the OSO 8 satellite. A broken power-law fit to the phase-resolved spectra (peak 1, the bridge, and peak 2) resulted in the following: for peak 1, A = 0.026 +/- 0.003, E(B) = 0.098 +/- 0.02 MeV, alpha(1) = 1.77(-0.25)(+0.188), alpha(2) = 2.09 +/- 0.01, chi(min)(2) = 45, 26 dof; for the bridge, A = 0.001 +/- 0.0001, E(B) = 0.45(-0.15)(+0.85) MeV, alpha(1) = 1.75 +/- 0.12, alpha(2) = 2.53(-0.12)(+0.10) chi(min)(2), d, = 16, 23 dof; and for peak 2, A = 0.02 +/- 0.002, E(B) = 0.13(-0.012)(+0.020) MeV, alpha(1) = 1.71 +/- 0.09, alpha 2 = 2.25 +/- 0.02, chi(min)(2) 21, 26 dof. For peak 1 only, the fit is greatly improved by using an outer gap model. The resultant values are a gap parameter of 0.450 +/- 0.003 with a normalization of 0.22 +/- 0.02, chi(min)(2). = 32, 28 dof. The separation of the pulse peaks is difficult to quantify objectively because the peaks are not symmetrical. When we use the maximum intensity values of each peak to determine the centroids, we find an energy-independent phase difference of 0.405 +/- 0.006 for the CGRO data (50 keV to 10 GeV) and 0.402 +/- 0.002 when other data were included covering the range from 0.5 to 300 keV. The energy-independent value of the phase of peak 1 relative to the radio is -0.003 +/- 0.012, where the uncertainty includes the absolute timing uncertainty. When the pulse shapes are characterized by asymmetric Lorentzian shapes, within the statistical uncertainty of the fits the widths of the peaks in the similar to 100 keV light curve are consistent within a factor of about 1.25 with the widths of the peaks in the similar to 100 MeV light curve. We discuss these results within the context of a bulk relativistic motion beaming model. C1 USN, RES LAB, EO HULBURT CTR SPACE RES, WASHINGTON, DC 20375 USA. ESTEC, DIV ASTROPHYS, 2200 AG NOORDWIJK, NETHERLANDS. MAX PLANCK INST EXTRATERR PHYS, D-85740 GARCHING, GERMANY. SRON, 3584 CA UTRECHT, NETHERLANDS. NASA, GODDARD SPACE FLIGHT CTR, GREENBELT, MD 20771 USA. STANFORD UNIV, WW HANSEN EXPTL PHYS LAB, STANFORD, CA 94305 USA. STANFORD UNIV, DEPT PHYS, STANFORD, CA 94305 USA. RP ULMER, MP (reprint author), NORTHWESTERN UNIV, DEPT PHYS & ASTRON, EVANSTON, IL 60208 USA. RI Nolan, Patrick/A-5582-2009; Thompson, David/D-2939-2012 OI Thompson, David/0000-0001-5217-9135 NR 38 TC 24 Z9 24 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUL 20 PY 1995 VL 448 IS 1 BP 356 EP 364 DI 10.1086/175966 PN 1 PG 9 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA RJ489 UT WOS:A1995RJ48900031 ER PT J AU ECKERMANN, SD AF ECKERMANN, SD TI EFFECT OF BACKGROUND WINDS ON VERTICAL WAVE-NUMBER SPECTRA OF ATMOSPHERIC GRAVITY-WAVES SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES LA English DT Article ID OCEANIC INTERNAL WAVES; MIDDLE ATMOSPHERE; LOWER STRATOSPHERE; LIDAR OBSERVATIONS; MOMENTUM FLUXES; RAYLEIGH LIDAR; MESOSCALE VARIABILITY; UNIVERSAL SPECTRUM; RADAR OBSERVATIONS; FREQUENCY-SPECTRA AB Observations of quasi-invariant m(-3) power spectra of various atmospheric perturbations at large vertical wavenumbers m have received considerable theoretical attention. Yet some other observations, most notably in the stratosphere, have revealed significant departures from this shape and much reduced spectral densities at large m. Here it is argued that these changes arise when a spectrum of gravity waves encounter mean wind changes which cause intrinsic horizontal phase speeds to increase. Concomitant changes in vertical wavenumbers, amplitudes, and shear variance can produce changes in spectral character qualitatively similar to observations. The two important dynamical processes governing the spectral response are refraction of vertical wavenumbers and conservation of Eliassen-Palm flux for nondissipating waves, processes already encapsulated in both single-wave and spectral parameterizations of gravity-wave processes. Retrospective application of these ideas to various observations in the literature leads to successful ''prediction'' (based on the background wind profile) of either quasi-invariant m(-3) spectra or attenuated spectra at large m. However, while explaining their occurrence, the precise changes in spectral shape predicted by simple models of wind-shifted spectra often differ from those observed. C1 USN, RES LAB, EO HULBURT CTR SPACE RES, WASHINGTON, DC 20375 USA. RP ECKERMANN, SD (reprint author), COMPUTAT PHYS INC, SUITE 600, 2750 PROSPER AVE, FAIRFAX, VA 22031 USA. NR 93 TC 39 Z9 41 U1 1 U2 6 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 2169-897X J9 J GEOPHYS RES-ATMOS JI J. Geophys. Res.-Atmos. PD JUL 20 PY 1995 VL 100 IS D7 BP 14097 EP 14112 DI 10.1029/95JD00987 PG 16 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA RK570 UT WOS:A1995RK57000024 ER PT J AU PULIAFITO, E BEVILACQUA, R OLIVERO, J DEGENHARDT, W AF PULIAFITO, E BEVILACQUA, R OLIVERO, J DEGENHARDT, W TI RETRIEVAL ERROR COMPARISON FOR SEVERAL INVERSION TECHNIQUES USED IN LIMB-SCANNING MILLIMETER-WAVE SPECTROSCOPY SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES LA English DT Article ID SOUNDING MEASUREMENTS; ATMOSPHERIC GASES; SUBMILLIMETER; TEMPERATURE; SHUTTLE AB The Rodgers formal retrieval error analysis allows the quantitative determination of such important retrieval properties as the total retrieval error, the contributions from the relevant error sources, the vertical resolution, and the inversion bias. Therefore it is a powerful tool for the objective evaluation and comparison of retrieval techniques. We have applied this error analysis to five numerical inversion techniques (the direct inversion, the linear constrained inversion,;the optimal estimation inversion, the general relaxation inversion, and the Twomey-modified Chahine relaxation inversion) used for the retrieval of middle atmospheric constituent concentrations from limb-scanning millimeter-wave spectroscopic measurements. As an example of such measurements, we use the geometry and instrument characteristic of the millimeter-wave atmospheric sounder (MAS) experiment, which has flown on the first three ATLAS series of spacelab shuttle missions (March 1992, April 1993, and November 1994). We find that the relaxation methods have somewhat better vertical resolution but are slightly more sensitive to measurement errors than the constrained matrix methods, However, for the assumed MAS instrument characteristics, the total retrieval error is similar for all of the inversion schemes. We also tested the error predicted by the theoretical analysis against numerical simulations and find good agreement. Trade-offs of these retrieval characteristics for several cases of measurement error and a priori profile uncertainty are presented, C1 USN, RES LAB, CTR ADV SPACE SENSING, WASHINGTON, DC 20375 USA. MAX PLANCK INST AERON, D-37189 KATLENBURG DUHM, GERMANY. PENN STATE UNIV, DEPT METEOROL, COMMUN & SPACE SCI LAB, UNIVERSITY PK, PA USA. NR 19 TC 11 Z9 11 U1 0 U2 1 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 2169-897X J9 J GEOPHYS RES-ATMOS JI J. Geophys. Res.-Atmos. PD JUL 20 PY 1995 VL 100 IS D7 BP 14257 EP 14267 DI 10.1029/95JD00212 PG 11 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA RK570 UT WOS:A1995RK57000038 ER PT J AU WORLEY, KC LINDSAY, EA BAILEY, W WISE, J MCCABE, ERB BALDINI, A AF WORLEY, KC LINDSAY, EA BAILEY, W WISE, J MCCABE, ERB BALDINI, A TI RAPID MOLECULAR CYTOGENETIC ANALYSIS OF X-CHROMOSOMAL MICRODELETIONS - FLUORESCENCE IN-SITU HYBRIDIZATION (FISH) FOR COMPLEX GLYCEROL KINASE-DEFICIENCY SO AMERICAN JOURNAL OF MEDICAL GENETICS LA English DT Article DE KINASE DEFICIENCY; FISH; MICRODELETION DIAGNOSIS; X CHROMOSOME; XP21; CARRIER DETECTION; PRENATAL DIAGNOSIS ID CONGENITAL ADRENAL HYPOPLASIA; MUSCULAR-DYSTROPHY LOCUS; SHORT ARM; XP21; DELETION; PATIENT; CONTIG; PROBES; DMD AB Diagnosis of X-chromosomal microdeletions has relied upon the traditional methods of Southern blotting and DNA amplification, with carrier identification requiring time-consuming and unreliable dosage calculations. In this report, we describe rapid molecular cytogenetic identification of deleted DNA in affected males with the Xp21 contiguous gene syndrome (complex glycerol kinase deficiency, CGKD) and female carriers for this disorder. CGKD deletions involve the genes for glycerol kinase, Duchenne muscular dystrophy, and/or adrenal hypoplasia congenita, We report an improved method for diagnosis of deletions in individuals with CGKD and for identification of female carriers within their families, using fluorescence in situ hybridization (FISH) with a cosmid marker (cosmid 35) within the glycerol kinase gene, When used in combination with an Xq control probe, affected males demonstrate a single signal from the control probe, while female carriers demonstrate a normal chromosome with two signals, as well as a deleted chromosome with a single signal from the control probe, FISH analysis for CGKD provides the advantages of speed and accuracy for evaluation of submicroscopic X-chromosomal deletions, particularly in identification of female carriers. In addition to improving carrier evaluation, FISH will make prenatal diagnosis of CGKD more readily available. (C) 1995 Wiley-Liss, Inc. C1 BAYLOR COLL MED,CTR HUMAN GENOME,HOUSTON,TX 77030. BAYLOR COLL MED,DEPT PEDIAT,HOUSTON,TX 77030. USN HOSP,DEPT PEDIAT,PENSACOLA,FL. UNIV ILLINOIS,DEPT PEDIAT,PEORIA,IL. RP WORLEY, KC (reprint author), BAYLOR COLL MED,DEPT MOLEC & HUMAN GENET,T-929,1 BAYLOR PLAZA,HOUSTON,TX 77030, USA. RI genes, anthony/F-2541-2012 FU NICHD NIH HHS [5 P30 HD24064, 3 R01-HD22563, 5 P30HD27832] NR 17 TC 6 Z9 7 U1 0 U2 0 PU WILEY-LISS PI NEW YORK PA DIV JOHN WILEY & SONS INC 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0148-7299 J9 AM J MED GENET JI Am. J. Med. Genet. PD JUL 17 PY 1995 VL 57 IS 4 BP 615 EP 619 DI 10.1002/ajmg.1320570420 PG 5 WC Genetics & Heredity SC Genetics & Heredity GA RG342 UT WOS:A1995RG34200019 PM 7573140 ER PT J AU SHI, FG TONG, HY AYERS, JD AF SHI, FG TONG, HY AYERS, JD TI FREE-ENERGY BARRIER TO NUCLEATION OF AMORPHOUS-TO-CRYSTALLINE TRANSFORMATION SELECTS THE SCALE OF MICROSTRUCTURE OF CRYSTALLIZED MATERIALS SO APPLIED PHYSICS LETTERS LA English DT Article AB Experimental determination of the free energy barrier to nucleation of amorphous-to-crystalline transformation reveals a selection principle for the average scale of crystalline microstructure of partially or fully crystallized materials prepared by crystallization of the amorphous precursors: it is determined by the free energy barrier to nucleation, and minimization of the free energy barrier leads to the formation of the finest crystalline microstructure. It is found that the nucleation at the temperature at which an amorphous alloy is crystallized with the finest crystalline microstructure is an isoenergetic process, the free energy barrier to the nucleation of crystallites at that temperature is contributed only by the entropic change. A model is developed to explain these observations that may provide a unified principle for designing materials with desirable scale of microstructure. (C) 1995 American Institute of Physics. C1 USN,RES LAB,WASHINGTON,DC 20375. RP SHI, FG (reprint author), UNIV CALIF IRVINE,DEPT CHEM ENGN & MAT SCI,IRVINE,CA 92717, USA. NR 15 TC 21 Z9 22 U1 1 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 17 PY 1995 VL 67 IS 3 BP 350 EP 352 DI 10.1063/1.115441 PG 3 WC Physics, Applied SC Physics GA RK396 UT WOS:A1995RK39600018 ER PT J AU SAKS, NS MA, DI FOWLER, WB AF SAKS, NS MA, DI FOWLER, WB TI NITROGEN DEPLETION DURING OXIDATION IN N2O SO APPLIED PHYSICS LETTERS LA English DT Article ID RAPID THERMAL-OXIDATION; INTERFACIAL NITROGEN; OXIDES; OXYNITRIDES; SIO2 AB The incorporation of nitrogen in oxides has been studied after furnace oxidation in N2O at 900 degrees C. We observe that nitrogen is removed from the oxide bulk during oxidation in N2O, while simultaneously nitrogen is incorporated at the growing Si-SiO2 interface. This results suggests that nitrogen incorporation involves a dynamic equilibrium between competing processes which causes both nitrogen incorporation and depletion. A chemical model for nitrogen removal is proposed based on a reaction with NO. Reaction energies, estimated from semiempirical quantum-mechanical calculations, support the proposed model. (C) 1995 American Institute of Physics. C1 LEHIGH UNIV,BETHLEHEM,PA 18015. RP SAKS, NS (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. RI Fowler, W/A-8821-2009 NR 21 TC 80 Z9 80 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 17 PY 1995 VL 67 IS 3 BP 374 EP 376 DI 10.1063/1.114633 PG 3 WC Physics, Applied SC Physics GA RK396 UT WOS:A1995RK39600026 ER PT J AU KIM, SS HERMAN, IP TUCHMAN, JA DOVERSPIKE, K ROWLAND, LB GASKILL, DK AF KIM, SS HERMAN, IP TUCHMAN, JA DOVERSPIKE, K ROWLAND, LB GASKILL, DK TI PHOTOLUMINESCENCE FROM WURTZITE GAN UNDER HYDROSTATIC-PRESSURE SO APPLIED PHYSICS LETTERS LA English DT Article ID GALLIUM NITRIDE; ZNSE AB The photoluminescence spectrum of undoped epitaxial wurtzite GaN layers on sapphire was measured for applied hydrostatic pressures up to 73 kbar at 9 K and up to 62 kbar at 300 K. The pressure dependences of the I-2 exciton recombination line and the ''yellow'' band (2.2 eV band at ambient pressure) were examined at 9 and 300 K, and the series of donor-acceptor-pair emission lines was analyzed at 9 K. From the I-2 lines, it was found that the band gap increases with pressure by 4.4+/-0.1 meV/kbar at 9 K and 4.7+/-0.1 meV/kbar at 300 K. (C) 1995 American Institute of Physics. C1 COLUMBIA UNIV,COLUMBIA RADIAT LAB,NEW YORK,NY 10027. USN,RES LAB,WASHINGTON,DC 20375. RP KIM, SS (reprint author), COLUMBIA UNIV,DEPT APPL PHYS,NEW YORK,NY 10027, USA. RI Rowland, Larry/C-4487-2008 NR 19 TC 54 Z9 54 U1 1 U2 8 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 17 PY 1995 VL 67 IS 3 BP 380 EP 382 DI 10.1063/1.114635 PG 3 WC Physics, Applied SC Physics GA RK396 UT WOS:A1995RK39600028 ER PT J AU NACIRI, J RATNA, BR BARALTOSH, S KELLER, P SHASHIDHAR, R AF NACIRI, J RATNA, BR BARALTOSH, S KELLER, P SHASHIDHAR, R TI ROOM-TEMPERATURE FERROELECTRIC TERPOLYMERS WITH LARGE SPONTANEOUS POLARIZATION SO MACROMOLECULES LA English DT Article ID LIQUID-CRYSTALS; POLYMERS AB It is well-known that the mesomorphic range as well as the physical properties of low molecular weight mesogens can be tuned by mixing different types of monomers. We show here that a similar tuning can be achieved for side-chain liquid crystalline polymers by incorporating two different types of side groups in the backbone in different ratios. The transition temperatures of these terpolymers show a linear dependence on the ratio of the two mesogenic side groups, while their spontaneous polarization shows nonmonotonic dependence. Also, the spontaneous polarization of the terpolymers shows an unusual (linear) temperature dependence throughout the smectic C-* phase. C1 UNIV COLORADO,DEPT CHEM,BOULDER,CO 80309. CENS,LAB LEON BRILLOUIN,F-91191 GIF SUR YVETTE,FRANCE. RP NACIRI, J (reprint author), USN,RES LAB,CTR BIOMOLEC SCI & ENGN,CODE 6900,WASHINGTON,DC 20375, USA. NR 22 TC 15 Z9 15 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0024-9297 J9 MACROMOLECULES JI Macromolecules PD JUL 17 PY 1995 VL 28 IS 15 BP 5274 EP 5279 DI 10.1021/ma00119a016 PG 6 WC Polymer Science SC Polymer Science GA RK469 UT WOS:A1995RK46900016 ER PT J AU PACE, MD SNOW, AW AF PACE, MD SNOW, AW TI NITROXIDE SPIN-PROBE LABEL STUDY OF HYDROGEN-BONDING AND PROBE SIZE EFFECTS IN A LINEAR EPOXY POLYMER SO MACROMOLECULES LA English DT Article ID MOLECULAR MOTIONS; CORRELATION TIMES; BETA; EPR AB An electron spin resonance (ESR) nitroxide spin probe/spin label study was performed on a linear diglycidyl ether Bisphenol A (DGEBA)-cyclohexylamine (CHA) epoxy polymer over a 30-200 degrees C temperature range. Measurements of correlation time and a T-50G parameter on two series of tetramethylpiperidyloxy-based spin probes occluded in an epoxy matrix and on the spin-labeled epoxy matrix itself have demonstrated the effects of probe size and hydrogen bonding. The probes in the series TEMPO, TEMPOL, and TAMINE (respectively, unsubstituted and 4-hydroxy- and 4-amino-2,2,6,6-tetramethylpiperidine-1-oxyl) display large increases in hydrogen-bonded effects, as indicated by T-50G measurements, while the probe size remains small and nearly constant. These increases correlate with an increasing hydrogen bond acceptor strength. The enhanced hydrogen-bonded effect of TAMINE over TEMPO was directly observed for these probes in methanol and cyclohexane solvents where free volume and viscosity effects of the polymer matrix do not interfere. As the probe size becomes larger, as in the series of probes BZONO, PGETA, and CPGETA (respectively, 4-(benzoyloxy)-2,2,6,6-tetramethylpiperidine-1-oxyl, 2:1 phenyl glycidyl ether:4-amino-2,2,6,6-tetramethylpiperidine-1-oxyl, and 2:1 4-cumylphenyl glycidyl ether:4-amino-2,2,6,6-tetramethylpiperidine-1-oxyl), the T-50G measurement gradually increases and approaches that of the spin-labeled epoxy matrix. These effects were analyzed using established theoretical relationships of T-50G to probe volume. C1 USN,RES LAB,WASHINGTON,DC 20375. NR 21 TC 18 Z9 18 U1 5 U2 9 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0024-9297 J9 MACROMOLECULES JI Macromolecules PD JUL 17 PY 1995 VL 28 IS 15 BP 5300 EP 5305 DI 10.1021/ma00119a020 PG 6 WC Polymer Science SC Polymer Science GA RK469 UT WOS:A1995RK46900020 ER PT J AU SHRIVERLAKE, LC BRESLIN, KA CHARLES, PT CONRAD, DW GOLDEN, JP LIGLER, FS AF SHRIVERLAKE, LC BRESLIN, KA CHARLES, PT CONRAD, DW GOLDEN, JP LIGLER, FS TI DETECTION OF TNT IN WATER USING AN EVANESCENT-WAVE FIBEROPTIC BIOSENSOR SO ANALYTICAL CHEMISTRY LA English DT Article AB A general health hazard from explosive toxicity exists due to poor storage facilities for explosives and from contamination of soil and water with byproducts of explosive manufacture. To provide an effective method for monitoring water contamination, the Naval Research Laboratory's fiber-optic biosensor was adapted for the detection of small molecules such as explosives. A competitive immunoassay was developed for the detection of the most widely used explosive, trinitrotoluene (TNT). Trinitrobenzenesulfonic acid (TNB), an analog of TNT, was labeled with a fluorophore and used as the analyte competitor. A solution containing 7.5 ng/mL sulfoindocyanine 5-ethylenediamine-labeled TNB (Cy5-EDA-TNB) was exposed to an antibody-coated optical fiber, generating a specific signal above background that corresponds to the 100% or reference signal. Inhibition of the 100% signal was proportional to the TNT concentration in the sample. Detection sensitivities of 10 ng/mL TNT (8 ppb) in buffer were achieved. Tests on river, harbor, and bilge water samples spiked with TNT showed results similar to tests on laboratory (buffer matrix) samples. To determine possible interferences, several structural analogs of TNT were tested. C1 USN,RES LAB,CTR MOLEC SCI & ENGN,WASHINGTON,DC 20375. NR 17 TC 123 Z9 127 U1 1 U2 10 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0003-2700 J9 ANAL CHEM JI Anal. Chem. PD JUL 15 PY 1995 VL 67 IS 14 BP 2431 EP 2435 DI 10.1021/ac00110a018 PG 5 WC Chemistry, Analytical SC Chemistry GA RJ072 UT WOS:A1995RJ07200018 ER PT J AU JOHNSTONE, PAS DELUCA, AM BACHER, JD HAMPSHIRE, VA TERRILL, RE ANDERSON, WJ KINSELLA, TJ SINDELAR, WF AF JOHNSTONE, PAS DELUCA, AM BACHER, JD HAMPSHIRE, VA TERRILL, RE ANDERSON, WJ KINSELLA, TJ SINDELAR, WF TI CLINICAL TOXICITY OF PERIPHERAL-NERVE TO INTRAOPERATIVE RADIOTHERAPY IN A CANINE MODEL SO INTERNATIONAL JOURNAL OF RADIATION ONCOLOGY BIOLOGY PHYSICS LA English DT Article DE ANIMAL MODELS; CANINE; INTRAOPERATIVE RADIOTHERAPY; NORMAL TISSUE TOLERANCE; PERIPHERAL NERVE ID RADIATION-THERAPY; TOLERANCE; IORT AB Purpose: The clinical late effects of intraoperative radiotherapy (IORT) on peripheral nerve were investigated in a foxhound model. Methods and Materials: Between 1982 and 1987, 40 animals underwent laparotomy with intraoperative radiotherapy of doses from 0-75 Gy administered to the right lumbosacral plexus, Subsequently, all animals were monitored closely and sacrificed to assess clinical effects to peripheral nerve, This analysis reports final clinical results of all animals, with follow-up to 5 years. Results: All animals treated with greater than or equal to 25 Gy developed ipsilateral neuropathy, An inverse relationship was noted between intraoperative radiotherapy dose and time to neuropathy, with an effective dose for 50% paralysis (ED(50)) of 17.2 Gy. One of the animals treated with 15 Gy IORT developed paralysis, after a much longer latency than the other animals. Conclusions: Doses of 15 Gy delivered intraoperatively may be accompanied by peripheral neuropathy with long-term follow-up, This threshold is less than that reported with shorter follow-up, The value of EDS, determined here is in keeping with data from other animal trials, and from clinical trials in humans. C1 NCI,RADIAT ONCOL BRANCH,BETHESDA,MD 20892. NCI,SURG BRANCH,BETHESDA,MD 20892. NCI,OFF LAB ANIM SCI,BETHESDA,MD 20892. NIH,NATL CTR RES RESOURCES,VET RESOURCES PROGRAM,BETHESDA,MD 20892. INDIANA UNIV,SCH MED,TERRE HAUTE,IN 47809. UNIV WISCONSIN,CTR CLIN SCI,DEPT HUMAN ONCOL,MADISON,WI 53792. NCI,RADIAT BIOL BRANCH,BETHESDA,MD 20892. RP JOHNSTONE, PAS (reprint author), USN,MED CTR,DIV RADIAT ONCOL,SAN DIEGO,CA 92134, USA. NR 11 TC 14 Z9 14 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. PD JUL 15 PY 1995 VL 32 IS 4 BP 1031 EP 1034 DI 10.1016/0360-3016(95)00028-W PG 4 WC Oncology; Radiology, Nuclear Medicine & Medical Imaging SC Oncology; Radiology, Nuclear Medicine & Medical Imaging GA RL555 UT WOS:A1995RL55500015 PM 7607923 ER PT J AU BYUN, D HWANG, S ZHANG, JD ZENG, H PERKINS, FK VIDALI, G DOWBEN, PA AF BYUN, D HWANG, S ZHANG, JD ZENG, H PERKINS, FK VIDALI, G DOWBEN, PA TI SYNCHROTRON-RADIATION-INDUCED DECOMPOSITION OF CLOSO-1,2-DICARBADODECABORANE SO JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS LA English DT Article DE ORTHOCARBORANE; SYNCHROTRON RADIATION; CHEMICAL VAPOR DEPOSITION; THIN FILM GROWTH; HETEROJUNCTION ID SI EPITAXIAL-GROWTH; CHEMICAL-VAPOR-DEPOSITION; MOLECULAR-BEAM SYSTEM; BORON-CARBIDE FILMS; SELECTIVE AREA; THIN-FILMS; CARBORANES; DISILANE; BORANES; SI(111) AB We have observed that molecular films of closo-1,2-dicarbadodecaborane (C2B10H12) decompose due to exposure to synchrotron light. Dissociation results in films that form a heterogeneous intermediate phase between associative molecular fragments and solid, thin film boron-carbide. This heterogeneous phase has an observed electronic structure that is an admixture of the electronic structure observed for molecularly condensed orthocarborane and the electronic structure anticipated for rhombohedral boron-carbide (based on the B-12 icosahedral ''building block''). With the synchrotron radiation exposure at room temperature there is dissociative adsorption of this icosahedral molecule and the growth of boron-carbide film is enhanced. The composition of the growing him changes for very thin films on Si(111), as determined by the boron to carbon ratio. The boron concentration of the film increases with increasing film thickness until the boron to carbon ratio reaches 5 when the film thickness is approximately 12 Angstrom. After about 12 Angstrom of film growth the composition is constant, i.e. B5C. C1 UNIV NEBRASKA,DEPT PHYS,LINCOLN,NE 68588. SYRACUSE UNIV,SOLID STATE SCI & TECHNOL PROGRAM,SYRACUSE,NY 13244. SYRACUSE UNIV,DEPT PHYS,SYRACUSE,NY 13244. USN,RES LAB,DIV ELECTR SCI TECHNOL,WASHINGTON,DC 20375. RP BYUN, D (reprint author), UNIV NEBRASKA,CTR MAT RES & ANAL,LINCOLN,NE 68588, USA. NR 46 TC 17 Z9 17 U1 1 U2 2 PU JAPAN J APPLIED PHYSICS PI MINATO-KU TOKYO PA DAINI TOYOKAIJI BLDG 24-8 SHINBASHI 4-CHOME, MINATO-KU TOKYO 105, JAPAN SN 0021-4922 J9 JPN J APPL PHYS 2 JI Jpn. J. Appl. Phys. Part 2 - Lett. PD JUL 15 PY 1995 VL 34 IS 7B BP L941 EP L944 DI 10.1143/JJAP.34.L941 PG 4 WC Physics, Applied SC Physics GA RK732 UT WOS:A1995RK73200022 ER PT J AU BARKYOUMB, JH LAND, DJ AF BARKYOUMB, JH LAND, DJ TI THERMAL-DIFFUSIVITY MEASUREMENT OF THIN WIRES USING PHOTOTHERMAL DEFLECTION SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID MIRAGE TECHNIQUE; SPECTROSCOPY; SOLIDS; DIAMOND RP BARKYOUMB, JH (reprint author), USN,CTR SURFACE WARFARE,CARDEROCK DIV,WHITE OAK SITE,SILVER SPRING,MD 20903, USA. NR 28 TC 8 Z9 8 U1 1 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD JUL 15 PY 1995 VL 78 IS 2 BP 905 EP 912 DI 10.1063/1.360282 PG 8 WC Physics, Applied SC Physics GA RH819 UT WOS:A1995RH81900034 ER PT J AU ROLAND, CM NGAI, KL AF ROLAND, CM NGAI, KL TI SHORT-TIME DYNAMICS OF GLASS-FORMING LIQUIDS SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID INCOHERENT NEUTRON-SCATTERING; SEGMENTAL RELAXATION; LIGHT-SCATTERING; ALPHA-RELAXATION; TEMPERATURE-DEPENDENCE; MOLECULAR GLASS; BETA-RELAXATION; TRANSITION; POLYMER; BEHAVIOR AB Calculations have been presented for the intermediate scattering function, dynamic structure factor, and dynamic susceptibility of a complex correlated system undergoing relaxation with independent vibrations. The vibrational contribution was approximated by a Debye spectrum, smoothed at high frequency, while the coupling model was used to describe the relaxation. This model asserts for nonpolymeric glass-forming liquids a crossover at a microscopic time from intermolecularly uncorrelated relaxation at a constant rate to intermolecularly coupled relaxation with a time-dependent, slowed-down rate. Although the model has previously been employed to successfully predict and otherwise account for a number of macroscopic relaxation phenomena, critical phenomena are not included in, and cannot be addressed by, the coupling model. Notwithstanding an absence of any change in transport mechanism for the supercooled liquid at a critical temperature, the coupling model data, when analyzed in the manner used for mode coupling theory, shows various features interpreted by MCT as critical dynamic singularities. These include an apparent fast ''beta'' relaxation giving rise to a cusp in the temperature dependence of the Debye-Waller factor, a power-law divergence in the temperature dependence of the relaxation time for the a process, and critical exponents for the relaxation having a defined relationship to one another. Additionally, other experimental features of the short-time dynamics, such as the anomalous Debye-Waller factor and the von Schweidler law, are also observed in results derived from the coupling model. Whatever similarities underlie the coupling model and MCT, a crucial difference is that only the latter predicts the existence of critical phenomena. Yet these and other distinct features are exhibited by the coupling model data. Evidently, any interpretation of short-time behavior in terms of MCT is ambiguous, if not necessarily incorrect. This indicates the importance of the many macroscopic-time relaxation properties found over the years in glass forming liquids (including polymers, small molecule van der Waal liquids, and inorganic materials), and the necessity that they be addressed by any theory, including MCT, purporting to offer a fundamental description of relaxation phenomena. RP ROLAND, CM (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 48 TC 30 Z9 30 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 1995 VL 103 IS 3 BP 1152 EP 1159 DI 10.1063/1.469825 PG 8 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA RJ371 UT WOS:A1995RJ37100032 ER PT J AU MOWREY, RC KROES, GJ AF MOWREY, RC KROES, GJ TI APPLICATION OF AN EFFICIENT ASYMPTOTIC ANALYSIS METHOD TO MOLECULE-SURFACE SCATTERINGE SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID DEPENDENT SCHRODINGER-EQUATION; WAVE PACKET APPROACH; FAST FOURIER-TRANSFORM; REACTIVE SCATTERING; QUANTUM DYNAMICS; ABSORBING POTENTIALS; INELASTIC-SCATTERING; PROPAGATION; SYSTEMS; PHOTOFRAGMENTATION AB An improved method for performing asymptotic analysis developed by Balint-Kurti et al. [J. Chem. Sec. Faraday Trans. 86, 1741 (1990)] was used with the close-coupling wave packet (CCWP) method. S-matrix elements are computed from the time dependence of the wave packet amplitude at a dividing surface in the asymptotic region. The analysis technique can be combined in a natural way with the use of an optical potential to absorb the scattered wave function beyond the dividing surface and with a technique in which the initial wave function is brought in on a separate, one-dimensional grid, thereby allowing the use of a smaller grid. The use of the method in conjunction with the Chebyshev and short-iterative Lanczos propagation techniques is demonstrated for a model problem in which H-2 is scattered from LiF(001). Computed S-matrix elements an in good agreement with those obtained using a time-independent close-coupling method. (C) 1995 American Institute of Physics. C1 VRIJE UNIV AMSTERDAM,1081 HV AMSTERDAM,NETHERLANDS. RP MOWREY, RC (reprint author), USN,RES LAB,THEORET CHEM SECT,CODE 6179,WASHINGTON,DC 20375, USA. NR 56 TC 44 Z9 44 U1 0 U2 7 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 1995 VL 103 IS 3 BP 1216 EP 1225 DI 10.1063/1.469831 PG 10 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA RJ371 UT WOS:A1995RJ37100039 ER PT J AU ACKLESON, SG AF ACKLESON, SG TI SPECIAL SECTION - ADVANCES IN OCEAN OPTICS - ISSUES OF CLOSURE - PREFACE SO JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS LA English DT Editorial Material RP ACKLESON, SG (reprint author), OFF NAVAL RES,ARLINGTON,VA 22217, USA. NR 7 TC 1 Z9 1 U1 0 U2 0 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES-OCEANS JI J. Geophys. Res.-Oceans PD JUL 15 PY 1995 VL 100 IS C7 BP 13133 EP 13134 DI 10.1029/95JC00840 PG 2 WC Oceanography SC Oceanography GA RJ356 UT WOS:A1995RJ35600001 ER PT J AU WEIDEMANN, AD STAVN, RH ZANEVELD, JRV WILCOX, MR AF WEIDEMANN, AD STAVN, RH ZANEVELD, JRV WILCOX, MR TI ERROR IN PREDICTING HYDROSOL BACKSCATTERING FROM REMOTELY-SENSED REFLECTANCE SO JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS LA English DT Article ID CASE-I WATERS; OPTICAL-PROPERTIES; OCEANIC WATERS; DIFFUSE-REFLECTANCE; BIOGENOUS MATTER; LIGHT-SCATTERING; NATURAL-WATERS; SARGASSO SEA; PHYTOPLANKTON; CHLOROPHYLL AB Monte Carlo simulations are carried out to determine the error in the inversion of backscattering from remotely sensed reflectance when geometrical shape factors of the light field are assumed to be unity. The results show that error in backscattering inversion can vary from a 40% overestimation to a 20% underestimation and is dependent on the solar angle and the hydrosol constituents contributing to backscattering. The simulations also demonstrate that for chlorophyll concentrations ranging from 0.05 to 20 mg m(-3) the most dramatic change in the geometrical shape factor occurs near 1.0 to 1.5 mg m(-3) chlorophyll. The potential importance of bacteria in influencing the shape factor and the subsequent effect of bacteria on the retrieval of the backscattering from remote sensing reflectance are shown. Quartzlike material's strong impact on geometrical shape factors and errors of retrieval of backscattering at low chlorophyll concentrations are also demonstrated. Remote sensing reflectance inversion schemes must include information about the backscattering function to be successful. C1 UNIV N CAROLINA,DEPT BIOL,GREENSBORO,NC 27412. OREGON STATE UNIV,COLL OCEAN & ATMOSPHER SCI,CORVALLIS,OR 97331. NEPTUNE SCI INC,SLIDELL,LA 70458. RP WEIDEMANN, AD (reprint author), USN,RES LAB,BAY ST LOUIS,MS 39529, USA. NR 42 TC 6 Z9 6 U1 0 U2 0 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES-OCEANS JI J. Geophys. Res.-Oceans PD JUL 15 PY 1995 VL 100 IS C7 BP 13163 EP 13177 DI 10.1029/95JC00459 PG 15 WC Oceanography SC Oceanography GA RJ356 UT WOS:A1995RJ35600005 ER PT J AU PEGAU, WS CLEVELAND, JS DOSS, W KENNEDY, CD MAFFIONE, RA MUELLER, JL STONE, R TREES, CC WEIDEMANN, AD WELLS, WH ZANEVELD, JRV AF PEGAU, WS CLEVELAND, JS DOSS, W KENNEDY, CD MAFFIONE, RA MUELLER, JL STONE, R TREES, CC WEIDEMANN, AD WELLS, WH ZANEVELD, JRV TI A COMPARISON OF METHODS FOR THE MEASUREMENT OF THE ABSORPTION-COEFFICIENT IN NATURAL-WATERS SO JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS LA English DT Article ID SPECTRAL ABSORPTION; LIGHT; SEA; PHYTOPLANKTON; PARTICLES; RADIANCE; METER; OCEAN AB In the spring of 1992 an optical closure experiment was conducted at Lake Pend Oreille, Idaho, A primary objective of the experiment was to compare techniques for the measurement of the spectral absorption coefficient and other inherent optical properties of natural waters. Daily averages of absorption coefficients measured using six methods are compared at wavelengths of 456, 488, and 532 nm. Overall agreement was within 40% at 456 nm and improved with increasing wavelength to 25% at 532 nm. These absorption measurements were distributed over the final 9 days of the experiment, when bio-optical conditions in Lake Pend Oreille (as indexed by the beam attenuation coefficient c(p)(660) and chlorophyll a fluorescence profiles) were representative of those observed throughout the experiment. However, profiles of stimulated chlorophyll a fluorescence and beam transmission showed that bio-optical properties in the lake varied strongly on all time and space scales. Therefore environmental variability contributed significantly to deviations between daily mean absorption coefficients measured using the different techniques. C1 SAN DIEGO STATE UNIV,CTR HYDROOPT & REMOTE SENSING,SAN DIEGO,CA 92120. TETRA TECH DATA SYST INC,CARLSBAD,CA 92008. USN,RES LAB,BAY ST LOUIS,MS 39529. SRI INT,MENLO PK,CA 94025. RP PEGAU, WS (reprint author), OREGON STATE UNIV,COLL ATMOSPHER & OCEAN SCI,OCEAN ADM BLDG 104,CORVALLIS,OR 97331, USA. NR 37 TC 38 Z9 46 U1 3 U2 7 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES-OCEANS JI J. Geophys. Res.-Oceans PD JUL 15 PY 1995 VL 100 IS C7 BP 13201 EP 13220 DI 10.1029/95JC00456 PG 20 WC Oceanography SC Oceanography GA RJ356 UT WOS:A1995RJ35600008 ER PT J AU ABBOTT, MR BRINK, KH BOOTH, CR BLASCO, D SWENSON, MS DAVIS, CO CODISPOTI, LA AF ABBOTT, MR BRINK, KH BOOTH, CR BLASCO, D SWENSON, MS DAVIS, CO CODISPOTI, LA TI SCALES OF VARIABILITY OF BIOOPTICAL PROPERTIES AS OBSERVED FROM NEAR-SURFACE DRIFTERS SO JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS LA English DT Article ID COASTAL TRANSITION ZONE; NORTHERN CALIFORNIA; NATURAL FLUORESCENCE; SARGASSO SEA; CHLOROPHYLL CONCENTRATION; PHYTOPLANKTON BIOMASS; SPECIES COMPOSITION; CONTINENTAL-SHELF; TIDAL CURRENTS; UPPER OCEAN AB A drifter equipped with bio-optical sensors and an automated water sampler was deployed in the California Current as part of the coastal transition zone program to study the biological, chemical, and physical dynamics of the meandering filaments, During deployments in 1987 and 1988, measurements were made of fluorescence, downwelling irradiance, upwelling radiance, and beam attenuation using several bio-optical sensors. Samples were collected by an automated sampler for later analysis of nutrients and phytoplankton species composition. Large-scale spatial and temporal changes in the bio-optical and biological properties of the region were driven by changes in phytoplankton species composition which, in turn, were associated with the meandering circulation. Variance spectra of the bio-optical parameters revealed fluctuations on both diel and semidiurnal scales, perhaps associated with solar variations and internal tides, respectively, Offshore, inertial-scale fluctuations were apparent in the variance spectra of temperature, fluorescence, and beam attenuation. Although calibration samples can help remove some of these variations, these results suggest that the use of bio-optical data from unattended platforms such as moorings and drifters must be analyzed carefully. Characterization of the scales of phytoplankton variability must account for the scales of variability in the algorithms used to convert bio-optical measurements into biological quantities. C1 WOODS HOLE OCEANOG INST, WOODS HOLE, MA 02543 USA. BIOSPHER INC, SAN DIEGO, CA 92110 USA. OFF NAVAL RES, ARLINGTON, VA 22217 USA. USN, RES LAB, WASHINGTON, DC 20375 USA. NOAA, ATLANTIC OCEANOG & METEOROL LAB, MIAMI, FL 33149 USA. RP ABBOTT, MR (reprint author), OREGON STATE UNIV, COLL OCEAN & ATMOSPHER SCI, CORVALLIS, OR 97331 USA. NR 48 TC 24 Z9 24 U1 1 U2 1 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 0148-0227 J9 J GEOPHYS RES-OCEANS JI J. Geophys. Res.-Oceans PD JUL 15 PY 1995 VL 100 IS C7 BP 13345 EP 13367 DI 10.1029/94JC02457 PG 23 WC Oceanography SC Oceanography GA RJ356 UT WOS:A1995RJ35600019 ER PT J AU HALLOCK, ZR TEAGUE, WJ AF HALLOCK, ZR TEAGUE, WJ TI ON THE MERIDIONAL SURFACE PROFILE OF THE GULF-STREAM AT 55-DEGREES-W SO JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS LA English DT Article ID NEW-ENGLAND SEAMOUNTS; INVERTED ECHO SOUNDERS; CAPE-HATTERAS; OBJECTIVE ANALYSIS; FRONTAL STRUCTURE; GEOSAT ALTIMETER; GRAND-BANKS; TRANSPORT; VARIABILITY; MEANDERS AB Nine-month records from nine inverted echo sounders (IESs) are analyzed to describe the mean baroclinic Gulf Stream at 55 degrees W. IES acoustic travel times are converted to thermocline depth which is optimally interpolated. Kinematic and dynamic parameters (Gulf Stream meridional position, velocity, and vorticity) are calculated. Primary Gulf Stream variability is attributed to meandering and changes in direction. A mean, stream-coordinate (relative to Gulf Stream instantaneous position and direction) meridional profile is derived and compared with results presented by other investigators. The mean velocity is estimated at 0.84 m s(-1) directed 14 degrees to the right of eastward, and the thermocline (12 degrees C) drops 657 m (north to south), corresponding to a baroclinic rise of the surface of 0.87 m. The effect of Gulf Stream curvature on temporal mean profiles is found to be unimportant and of minimal importance overall. The derived, downstream current profile is well represented by a Gaussian function and is about 190 km wide where it crosses zero. Surface baroclinic transport is estimated to be 8.5 x 10(4) m(2) s(-1), and maximum shear (flanking the maximum) is 1.2 x 10(-5) s(-1). Results compare well with other in situ observational results from the same time period. On the other hand, analyses (by others) of concurrent satellite altimetry (Geosat) suggest a considerably narrower, more intense mean Gulf Stream. RP HALLOCK, ZR (reprint author), USN,RES LAB,BAY ST LOUIS,MS 39529, USA. NR 34 TC 0 Z9 0 U1 0 U2 0 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES-OCEANS JI J. Geophys. Res.-Oceans PD JUL 15 PY 1995 VL 100 IS C7 BP 13615 EP 13624 DI 10.1029/95JC00943 PG 10 WC Oceanography SC Oceanography GA RJ356 UT WOS:A1995RJ35600035 ER PT J AU WIZEL, B HOUGHTEN, R CHURCH, P TINE, JA LANAR, DE GORDON, DM BALLOU, WR SETTE, A HOFFMAN, SL AF WIZEL, B HOUGHTEN, R CHURCH, P TINE, JA LANAR, DE GORDON, DM BALLOU, WR SETTE, A HOFFMAN, SL TI HLA-A2-RESTRICTED CYTOTOXIC T-LYMPHOCYTE RESPONSES TO MULTIPLE PLASMODIUM-FALCIPARUM SPOROZOITE SURFACE PROTEIN-2 EPITOPES IN SPOROZOITE-IMMUNIZED VOLUNTEERS SO JOURNAL OF IMMUNOLOGY LA English DT Article ID HIV-SEROPOSITIVE INDIVIDUALS; CLASS-I MOLECULES; CIRCUMSPOROZOITE PROTEIN; MALARIA SPOROZOITES; CELLS RECOGNIZE; SIGNAL SEQUENCE; CS PROTEIN; PEPTIDES; ANTIGEN; CD4+ AB CD8(+) CTL specific for the Plasmodium yoelii sporozoite surface protein 2 (PySSP2) protect mice against malaria. For this reason, vaccines designed to induce CTL against P. falciparum SSP2 (PfSSP2) are under development. Optimal development of PfSSP2 as a component of human malaria vaccines requires characterization of HLA class I-restricted CTL against this Ag. For this purpose, PBMC from four HLA-A2(+) human volunteers immunized with P. falciparum irradiated sporozoites were stimulated with a recombinant vaccinia virus expressing PfSSP2 and with 35 PfSSP2-derived 15-amino acid peptides containing sequences conforming to HLA-A2 binding motifs. Ag-specific, genetically restricted, CD8(+) T cell-dependent cytotoxic activity against autologous target cells transfected with the PfSSP2 gene was demonstrated in the four volunteers. Twelve of the 35 peptides sensitized HLA-A2-matched target cells for lysis by peptide-stimulated effecters. Three volunteers had CTL against 9 of the 12 peptides, and one had no peptide-specific CTL. HLA-A*0201 restriction was confirmed by demonstrating that effecters from the three responders could be stimulated with six different peptides to lyse HLA-A*0201(+) T2 cells incubated with the homologous peptides. Peptide-specific, genetically restricted, CD8(+) T cell-dependent cytotoxic activity was also demonstrated against two peptides using unstimulated PBMC as effecters. Available data indicate that the motif-bearing sequences in 6 of the 12 positive peptides are conserved among P. falciparum isolates and clones. Demonstration of HLA-A2-restricted CTL responses to multiple PfSSP2-derived peptides, and of circulating activated CTL against PfSSP2 in immune volunteers provide important information for optimal design and evaluation of vaccines containing this pre-erythrocytic stage Ag. C1 USN,MED RES INST,MALARIA PROGRAM,ROCKVILLE,MD 20852. JOHNS HOPKINS UNIV,SCH HYG & PUBL HLTH,DEPT MOLEC MICROBIOL & IMMUNOL,BALTIMORE,MD 21205. TORREY PINES INST MOLEC STUDIES,SAN DIEGO,CA 92121. HOUGHTEN PHARMACEUT INC,SAN DIEGO,CA 92121. VIROGENET CORP,TROY,NY 12180. WALTER REED ARMY INST RES,DEPT IMMUNOL,WASHINGTON,DC 20307. CYTEL CORP,SAN DIEGO,CA 92121. RI Lanar, David/B-3560-2011 NR 52 TC 58 Z9 59 U1 0 U2 1 PU AMER ASSOC IMMUNOLOGISTS PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814 SN 0022-1767 J9 J IMMUNOL JI J. Immunol. PD JUL 15 PY 1995 VL 155 IS 2 BP 766 EP 775 PG 10 WC Immunology SC Immunology GA RG973 UT WOS:A1995RG97300030 PM 7541824 ER PT J AU KRUGER, J LILLARD, RS STREINZ, CC MORAN, PJ AF KRUGER, J LILLARD, RS STREINZ, CC MORAN, PJ TI EFFECT OF MICROSTRUCTURE ON PASSIVE FILM FORMATION AND BREAKDOWN IN SPUTTER-DEPOSITED AL-TA ALLOY-FILMS SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING LA English DT Article; Proceedings Paper CT 3rd US/Japan Seminar on Development and Environmental Characteristics of New Materials CY JUN 07-09, 1994 CL MT HOOD, OR SP Japan Soc Promot Sci, Natl Sci Fdn, USN, Off Naval Res DE MICROSTRUCTURE; FITTING; PASSIVATION; BREAKDOWN; AL-TA ALLOY FILMS ID DYNAMIC IMAGING MICROELLIPSOMETRY; ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY; OXIDE-FILMS; ALUMINUM; CHEMISTRY; THICKNESS; GROWTH AB The role played by microstructural features in the passivation and breakdown processes which lead to pitting has been examined for the first time by the new techniques of dynamic imaging microellipsometry (DIM) and local electrochemical impedance spectroscopy (LEIS). Contrary to expectations, an examination of the passivation of sputter-deposited Al-Ta alloy films found that the film on the Al3Ta precipitates formed a thicker passive layer than that on the solid solution matrix surrounding the precipitates. The LEIS study of the microstructural effects under breakdown conditions found that the film on the Al3Ta precipitate had a higher capacitance than the dealloyed region surrounding it, indicating that the film on the precipitate has different properties from the dealloyed region in its vicinity. This difference in film thickness and properties, found by both DIM and LEIS, may be responsible for the breakdown which leads to pitting initiated in the region adjacent to the precipitates. C1 USN ACAD,ANNAPOLIS,MD 21402. RP KRUGER, J (reprint author), JOHNS HOPKINS UNIV,BALTIMORE,MD 21218, USA. NR 30 TC 6 Z9 6 U1 1 U2 3 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 JUL 15 PY 1995 VL 198 IS 1-2 BP 11 EP 18 DI 10.1016/0921-5093(95)80053-W PG 8 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA RQ439 UT WOS:A1995RQ43900003 ER PT J AU LECHTER, W TOTH, L OSOFSKY, M SKELTON, E SOULEN, RJ QADRI, S SCHWARTZ, J KESSLER, J WOLTERS, C AF LECHTER, W TOTH, L OSOFSKY, M SKELTON, E SOULEN, RJ QADRI, S SCHWARTZ, J KESSLER, J WOLTERS, C TI ONE-STEP REACTION AND CONSOLIDATION OF HG BASED HIGH-TEMPERATURE SUPERCONDUCTORS BY HOT ISOSTATIC PRESSING SO PHYSICA C LA English DT Article ID HGBA2CACU2O6+DELTA; SYSTEM AB A hot isostatic press (HIP) technique has been used successfully to react and consolidate in one step the Hg based high-temperature superconductors (HTS's). Hot isostatic pressing (HIPping) overcomes some of the problems encountered in the quartz-encapsulation technique typically used to make Hg based HTS samples, such as containing the high vapor pressures of Hg and avoiding explosions. The HIPping conditions for processing (i.e., range of temperature and pressure) are significantly different from those used in the quartz-encapsulation method. These differences seem to relax the stringent conditions on precursor processing required in other processing methods. Hg based I-ITS samples were successfully made from both nitrate and carbonate precursors, as well as from commercially available precursors. X-ray diffraction experiments indicated that the best materials were made with nitrate precursors and were composed of 1223 phase (66%), 1212 phase (33%) and a small amount of BaCuO2 (1%). We have HIPped powders and contained them in selected high-purity metal foils. We find that Au is a good containment material for processing as it reacts very little with the Hg compounds being formed. Ag, on the other hand, reacts extensively. Samples with densities as high as 97% of theoretical density were formed. This technique has been used to successfully fabricate components that may lead directly to devices. C1 USN,RES LAB,DIV MAT SCI & TECHNOL,WASHINGTON,DC 20375. FLORIDA STATE UNIV,NATL HIGH MAGNET FIELD LAB,TALLAHASSEE,FL 32306. RI Schwartz, Justin/D-4124-2009 OI Schwartz, Justin/0000-0002-7590-240X NR 10 TC 17 Z9 17 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4534 J9 PHYSICA C JI Physica C PD JUL 15 PY 1995 VL 249 IS 3-4 BP 213 EP 219 DI 10.1016/0921-4534(95)00280-4 PG 7 WC Physics, Applied SC Physics GA RK953 UT WOS:A1995RK95300001 ER PT J AU AGASSI, D BARDO, RD AF AGASSI, D BARDO, RD TI FLUX-CREEP IN THE PRESENCE OF TWIN BOUNDARIES SO PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS LA English DT Article ID HIGH-TEMPERATURE SUPERCONDUCTORS; CU-O CRYSTAL; YBA2CU3O7-DELTA; VORTEX; IRREVERSIBILITY; DISSIPATION; DEPENDENCE; BEHAVIOR; LATTICE; MOTION AB The flux-creep rate associated with twin boundary pinning is calculated in the framework of a Brownian motion model. Systematic elimination of the velocity degrees of freedom exposes the relevant small parameter and validates the strong-friction limit for a ''typical'' high-temperature superconductor. The corresponding expression for the vortex-escape probability is obtained in a closed form. For a piecewise linear pinning potential approximation this expression yields an analytic result. The ensuing critical current strongly depends not only on the pinning-potential maximum depth, but also on the existence of deep, steep features in its shape. For a ''realistic'' twin boundary pinning potential, the calculated vortex-escape probability is compared to the Anderson-Kim theory. The comparison shows that the Anderson-Kim expression greatly overestimates the vortex-escape probability. Inter-defect diffusion is found to be particularly important in the ''weak'' current, low-temperature regime. RP USN, CTR SURFACE WARFARE, WHITE OAK, MD USA. NR 46 TC 4 Z9 4 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4534 EI 1873-2143 J9 PHYSICA C JI Physica C PD JUL 15 PY 1995 VL 249 IS 3-4 BP 361 EP 376 DI 10.1016/0921-4534(95)00321-5 PG 16 WC Physics, Applied SC Physics GA RK953 UT WOS:A1995RK95300017 ER PT J AU GOVER, A VANAMERSFOORT, W COLSON, WB MIMA, K WARREN, R AF GOVER, A VANAMERSFOORT, W COLSON, WB MIMA, K WARREN, R TI NEW LIGHT ON FREE-ELECTRON LASERS SO SCIENCE LA English DT Letter C1 TEL AVIV UNIV,DEPT ELECT ENGN PHYS ELECTR,IL-69978 TEL AVIV,ISRAEL. FOM,INST PLASMA PHYS,3430 BF NIEUWEGEIN,NETHERLANDS. USN,POSTGRAD SCH,DEPT PHYS,MONTEREY,CA 93943. OSAKA UNIV,INST LASER ENGN,OSAKA 565,JAPAN. LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. RP GOVER, A (reprint author), TEL AVIV UNIV,INT FEL EXECUT COMM,AD HOC COMM,IL-69978 TEL AVIV,ISRAEL. NR 2 TC 0 Z9 0 U1 0 U2 1 PU AMER ASSOC ADVAN SCIENCE PI WASHINGTON PA 1333 H ST NW, WASHINGTON, DC 20005 SN 0036-8075 J9 SCIENCE JI Science PD JUL 14 PY 1995 VL 269 IS 5221 BP 148 EP 149 DI 10.1126/science.269.5221.148-a PG 2 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA RJ029 UT WOS:A1995RJ02900010 PM 17789830 ER PT J AU SCHALINSKI, CJ JOHNSTON, KJ WITZEL, A SPENCER, RE FIEDLER, R WALTMAN, E POOLEY, GG HJELLMING, R MOLNAR, LA AF SCHALINSKI, CJ JOHNSTON, KJ WITZEL, A SPENCER, RE FIEDLER, R WALTMAN, E POOLEY, GG HJELLMING, R MOLNAR, LA TI VLBI OBSERVATIONS OF CYGNUS-X-3 DURING THE 1985 OCTOBER RADIO OUTBURST SO ASTROPHYSICAL JOURNAL LA English DT Article DE BINARIES, CLOSE; ISM, JETS AND OUTFLOWS; STARS, INDIVIDUAL (CYGNUS X-3); X-RAYS, STARS ID INTERSTELLAR-MEDIUM; SCATTERING; DISCOVERY; EXPANSION; 0.35C AB Cygnus X-3 underwent a large outburst beginning on 1985 October 2 and reached a peak flux density of 18 Jy at 11.1 cm on October 10. Between October 7 and October 19 we performed seven snapshot observations at a wavelength of 6 cm using telescopes of the European VLBI Network. The source structure may be represented by three components, consistent with a pair of symmetrical jets emanating from a central compact object. The component sizes are consistent with broadening by interstellar scattering to 16 +/- 6 mas. Comparison with other data shows that the frequency dependence of the scattered image varies as v(-2.07+/-0.04) and that the scattering toward Cygnus X-3 is enhanced compared with other Galactic sources. We estimate that the emission in the symmetrical components has an apparent proper motion of 4.2 mas day(-1) or 0.3e at a distance of 10 kpc. Study of the VLBI structure and total flux density variability yields an upper limit for the distance to Cygnus X-3 of 15 kpc. C1 MAX PLANCK INST RADIOASTRON,D-53121 BONN,GERMANY. UNIV BONN,INST GEODAT,D-53121 BONN,GERMANY. USN OBSERV,WASHINGTON,DC 20392. UNIV MANCHESTER,NUFFIELD RADIO ASTRON LABS,JODRELL BANK,MACCLESFIELD SK11 9DL,CHESHIRE,ENGLAND. USN,RES LAB,DIV REMOTE SENSING,WASHINGTON,DC 20375. UNIV CAMBRIDGE OBSERV,INST ASTRON,CAMBRIDGE CB3 0HA,ENGLAND. NATL RADIO ASTRON OBSERV,SOCORRO,NM 87801. UNIV IOWA,DEPT PHYS & ASTRON,IOWA CITY,IA 52242. NR 28 TC 25 Z9 25 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 JUL 10 PY 1995 VL 447 IS 2 BP 752 EP 759 DI 10.1086/175914 PN 1 PG 8 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA RF788 UT WOS:A1995RF78800025 ER PT J AU NEWTON, EK EMSLIE, AG MARISKA, JT AF NEWTON, EK EMSLIE, AG MARISKA, JT TI THE VELOCITY DIFFERENTIAL EMISSION MEASURE - DIAGNOSTIC OF BULK PLASMA MOTION IN SOLAR-FLARES SO ASTROPHYSICAL JOURNAL LA English DT Article DE SUN, CORONA; SUN, FLARES; SUN, PARTICLE EMISSION; SUN, X-RAYS, GAMMA RAYS ID BRAGG CRYSTAL SPECTROMETER; X-RAY-SPECTRA; CHROMOSPHERIC EVAPORATION; IMPULSIVE PHASE; LINE; LOOP; XIX; SIMULATIONS AB Mass motions are a ubiquitous product of solar dare energy release. A better understanding of the flare plasma's distribution-how much is moving and how fast-permits insight into the mechanisms of energy transport (and release) which lead to those motions. Observationally, mass motions during flares are often manifested in the shape and location of soft X-ray emission lines. Observed line profiles generally exhibit a width greater than the thermal Doppler width and a blue-wing asymmetry which has been cited as evidence for plasma motions along the line of sight. Past efforts to characterize this excess width and asymmetry have primarily involved the parametric fitting of a double-Gaussian form. In this paper we show, however, that simple two-component models are inconsistent with the observed evolution of spectral lines and hence serve as a poor diagnostic of plasma motions. We therefore generalize the synthesis of line profiles to the case of a continuum of Gaussian components, by introducing a quantity which we term the velocity differential emission measure (VDEM). The VDEM measures the distribution of emission from a volume of plasma as a function of its line-of-sight velocity. It can either be computed from theoretical model atmospheres, or recovered from observed line profiles using an inversion technique. We present the VDEMs of two model flare atmospheres and discuss the differences between them. We also deconvolve a VDEM from a representative Ca XIX flare spectrum observed by the Bragg Crystal Spectrometer instrument aboard Yohkoh. C1 USN,RES LAB,WASHINGTON,DC 20375. RP NEWTON, EK (reprint author), UNIV ALABAMA,DEPT PHYS,HUNTSVILLE,AL 35899, USA. NR 38 TC 15 Z9 15 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 JUL 10 PY 1995 VL 447 IS 2 BP 915 EP 922 DI 10.1086/175929 PN 1 PG 8 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA RF788 UT WOS:A1995RF78800040 ER PT J AU GROVE, JE TAVANI, M PURCELL, WR JOHNSON, WN KURFESS, JD STRICKMAN, MS ARONS, J AF GROVE, JE TAVANI, M PURCELL, WR JOHNSON, WN KURFESS, JD STRICKMAN, MS ARONS, J TI EVIDENCE FOR SHOCK ACCELERATION IN THE BINARY PULSAR SYSTEM PSR B1259-63 SO ASTROPHYSICAL JOURNAL LA English DT Article DE ACCELERATION OF PARTICLES; GAMMA RAYS, OBSERVATIONS; PULSARS, INDIVIDUAL (PSR B1259-63); SHOCK WAVES AB The PSR B1259-63 system (Johnston et al. 1992, 1994) was observed near periastron by the Compton Gamma-Ray Observatory in 1994 January. This system contains a rapidly rotating pulsar and a Be star in a highly eccentric binary orbit. We report the discovery by the OSSE instrument of unpulsed emission with a hard power-law spectrum between 50 and 200 keV from the direction of this system. Neither diffuse Galactic background emission nor nearby X-ray binaries contribute significantly to the detected flux. Our results are particularly important for the theory of interaction of pulsars with gaseous environments. We interpret the hard X-ray emission as synchrotron radiation from relativistic particles of the PSR B1259-63 wind being shocked and accelerated within the binary. Our results indicate, for the first time in a binary pulsar, that shock acceleration can increase the original energy of pulsar wind particles by a factor greater than or similar to 10, despite the high synchrotron and inverse Compton cooling rates near periastron. The derived shock properties (efficiency, radiation spectrum, timescale) are relevant for a broad class of high-energy astrophysical sources characterized by shocked relativistic plasmas subject to strong radiative cooling. C1 PRINCETON UNIV,JOSEPH HENRY LABS,PRINCETON,NJ 08544. PRINCETON UNIV,DEPT PHYS,PRINCETON,NJ 08544. USN,RES LAB,EO HULBURT CTR SPACE RES,WASHINGTON,DC 20375. NORTHWESTERN UNIV,DEPT PHYS & ASTRON,EVANSTON,IL 60208. UNIV CALIF BERKELEY,DEPT ASTRON,BERKELEY,CA 94720. RP GROVE, JE (reprint author), COLUMBIA UNIV,COLUMBIA ASTROPHYS LAB,PUPIN HALL,NEW YORK,NY 10027, USA. RI Johnson, Neil/G-3309-2014 NR 16 TC 37 Z9 37 U1 2 U2 2 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUL 10 PY 1995 VL 447 IS 2 BP L113 EP L115 PN 2 PG 3 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA RF790 UT WOS:A1995RF79000013 ER PT J AU WANG, YM SHEELEY, NR AF WANG, YM SHEELEY, NR TI SOLAR IMPLICATIONS OF ULYSSES INTERPLANETARY FIELD-MEASUREMENTS SO ASTROPHYSICAL JOURNAL LA English DT Article DE INTERPLANETARY MEDIUM; SOLAR WIND; SUN, CORONA; SUN, MAGNETIC FIELDS ID SUNS POLAR FIELDS; MAGNETIC-FIELD; SECTOR STRUCTURE; STRENGTH; EVOLUTION; CYCLE-21; CORONA AB Recent observations by the Ulysses magnetometer team have shown that the strength of the radial interplanetary field component, \B-r\, is essentially independent of latitude, a result which implies that the heliospheric currents are confined entirely to thin sheets. Using such a current sheet model, we extrapolate the observed photospheric field to 1 AU and compare the predicted magnitude and sign of B-r with spacecraft measurements during 1970-1993. Approximate agreement can be obtained if the solar magnetograph measurements in the Fe I lambda 5250 line are scaled upward by a latitude-dependent factor, similar to that derived by Ulrich from a study of magnetic saturation effects. The correction factor implies sharply peaked polar fields near sunspot minimum, with each polar coronal hole having a mean field strength of 10 G. RP WANG, YM (reprint author), USN,RES LAB,EO HULBURT CTR SPACE RES,CODE 7672,WASHINGTON,DC 20375, USA. NR 30 TC 154 Z9 156 U1 0 U2 1 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUL 10 PY 1995 VL 447 IS 2 BP L143 EP L146 DI 10.1086/309578 PN 2 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA RF790 UT WOS:A1995RF79000021 ER PT J AU MOSCOVICI, J LOUPIAS, G RABII, S ERWIN, S RASSAT, A FABRE, C AF MOSCOVICI, J LOUPIAS, G RABII, S ERWIN, S RASSAT, A FABRE, C TI COMPTON PROFILES AND ELECTRONIC DENSITY IN C-60 SO EUROPHYSICS LETTERS LA English DT Article ID LITHIUM-INTERCALATED GRAPHITE; SCATTERING; BERYLLIUM; CARBON AB High-resolution measurements of Compton profile on C-60 powder have been carried out as a function of temperature both below and above the orientational ordering phase transition (260 K). Simultaneously, theoretical profiles are obtained using the plane-wave expansion of wave functions from an ab initio self-consistent field calculation (SCF) of the energy band structure, using the linear combination of atomic orbitals (LCAO) method within the local-density approximation. Compared to graphite, the C-60 profiles indicate substantially greater delocalisation of the ground-state charge density. We have demonstrated, both by experiment and calculation, that this delocalisation is mainly a molecular effect. C1 UNIV PARIS 07, CNRS, MINERAL CRISTALLOG LAB, F-75252 PARIS 05, FRANCE. UNIV PARIS 07, CNRS, MINERAL CRISTALLOG LAB, F-75252 PARIS 05, FRANCE. UNIV PENN, DEPT ELECT ENGN, PHILADELPHIA, PA 19104 USA. USN, RES LAB, COMPLEX SYST THEORY BRANCH, WASHINGTON, DC 20375 USA. ECOLE NORMALE SUPER, CHIM LAB, CNRS, URA 1679, F-75005 PARIS, FRANCE. RI Erwin, Steven/B-1850-2009 NR 26 TC 11 Z9 11 U1 0 U2 0 PU EDP SCIENCES S A PI LES ULIS CEDEX A PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE SN 0295-5075 J9 EUROPHYS LETT JI Europhys. Lett. PD JUL 10 PY 1995 VL 31 IS 2 BP 87 EP 93 DI 10.1209/0295-5075/31/2/005 PG 7 WC Physics, Multidisciplinary SC Physics GA RK365 UT WOS:A1995RK36500005 ER PT J AU GREGA, LM WEI, T LEIGHTON, RI NEVES, JC AF GREGA, LM WEI, T LEIGHTON, RI NEVES, JC TI TURBULENT MIXED-BOUNDARY FLOW IN A CORNER FORMED BY A SOLID WALL AND A FREE-SURFACE SO JOURNAL OF FLUID MECHANICS LA English DT Article ID CHANNEL FLOW; REYNOLDS-NUMBER; LAYER; JET AB Results from a joint numerical/experimentaI study of turbulent flow along a corner formed by a vertical wall and a horizontal free surface are presented. The objective of the investigation was to understand transport mechanisms in the corner. Numerical simulations were conducted at NRL to obtain data describing the dynamics of the near corner region. The Reynolds number for the simulations was Re-theta approximate to 220. Flow visualization experiments conducted in the Rutgers free surface water tunnel were used to initially identify coherent structures and to determine the effect of these structures on the free surface. Time-resolved streamwise LDA measurements were made for Re-theta approximate to 1150. The most significant results were the identification of inner and outer secondary flow regions in the corner. The inner secondary motion is characterized by a weak slowly evolving vortex with negative streamwise vorticity. The outer secondary motion is characterized by an upflow along the wall and outflow away from the wall at the free surface. Additional salient results included observations of surfactant transport away from the surface in cores of vortices connected to the free surface, intermittent energetic transport of fluid to the surface, and attenuation of streak motion by the free surface. C1 USN,RES LAB,DIV REMOTE SENSING,WASHINGTON,DC 20375. GEORGE MASON UNIV,CTR COMPUTAT SCI & INFORMANT,FAIRFAX,VA 22030. RP GREGA, LM (reprint author), RUTGERS STATE UNIV,DEPT MECH & AEROSP ENGN,PISCATAWAY,NJ 08855, USA. NR 23 TC 24 Z9 24 U1 1 U2 5 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 JUL 10 PY 1995 VL 294 BP 17 EP 46 DI 10.1017/S0022112095002795 PG 30 WC Mechanics; Physics, Fluids & Plasmas SC Mechanics; Physics GA RM288 UT WOS:A1995RM28800002 ER PT J AU HOBART, KD GODBEY, DJ TWIGG, ME FATEMI, M THOMPSON, PE AF HOBART, KD GODBEY, DJ TWIGG, ME FATEMI, M THOMPSON, PE TI SURFACE SEGREGATION AND STRUCTURE OF SB-DOPED SI(100) FILMS GROWN AT LOW-TEMPERATURE BY MOLECULAR-BEAM EPITAXY SO SURFACE SCIENCE LA English DT Article DE ANTIMONY; MOLECULAR BEAM EPITAXY; SECONDARY ION MASS SPECTROSCOPY; SILICON; SURFACE SEGREGATION ID SILICON; LAYERS; MBE; MICROSCOPY AB Sb surface segregation and doping during Si(100) molecular beam epitaxy were studied for growth temperatures of 320-500 degrees C. Surface segregation was analyzed by depth profiling with secondary ion mass spectrometry and the results indicate the existence of several distinct dopant concentration- and temperature-dependent surface segregation regimes: (1) For dilute Sb surface concentrations the measurements reveal a region where bulk and surface concentrations are linearly related, and the surface segregation is described by a constant. However, the experimentally determined temperature dependence of the segregation does not follow simple kinetics theory, and appreciable surface segregation is observed at temperatures less than or equal to 400 degrees C. (2) At temperatures >350 degrees C, the surface segregation reaches a maximum for Sb surface concentrations of 0.5 monolayers. (3) For surface concentrations near 1 monolayer, the surface segregation decreases with increasing surface Sb coverage due to dopant interaction within surface and subsurface layers. In cases where films were grown under very high dopant fluxes, we have identified cone-like defects and stacking faults that are the result of the apparent surface concentration exceeding 1 monolayer. C1 NATL INST STAND & TECHNOL,DIV SURFACE & MICROANAL SCI,GAITHERSBURG,MD 20899. USN,RES LAB,DIV ELECTR SCI & TECHNOL,WASHINGTON,DC 20375. NR 36 TC 36 Z9 36 U1 2 U2 5 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0039-6028 J9 SURF SCI JI Surf. Sci. PD JUL 10 PY 1995 VL 334 IS 1-3 BP 29 EP 38 DI 10.1016/0039-6028(95)00435-1 PG 10 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA RK973 UT WOS:A1995RK97300011 ER PT J AU KOO, KP KERSEY, AD AF KOO, KP KERSEY, AD TI FIBER LASER SENSOR WITH ULTRAHIGH STRAIN RESOLUTION USING INTERFEROMETRIC INTERROGATION SO ELECTRONICS LETTERS LA English DT Article DE FIBER OPTIC SENSORS; GRATINGS IN FIBERS; STRAIN SENSORS AB A fibre Bragg grating based laser sensor system with an RMS strain resolution of 5.6 x 10(-14)/root Hz at 7 kHz is reported. An interferometric readout technique is used to determine strain induced wavelength shifts in the laser with high resolution. C1 SFA INC,LANDOVER,MD 20785. RP KOO, KP (reprint author), USN,RES LAB,DIV OPT SCI,WASHINGTON,DC 20375, USA. NR 8 TC 48 Z9 53 U1 0 U2 4 PU IEE-INST ELEC ENG PI HERTS PA MICHAEL FARADAY HOUSE SIX HILLS WAY STEVENAGE, HERTS, ENGLAND SG1 2AY SN 0013-5194 J9 ELECTRON LETT JI Electron. Lett. PD JUL 6 PY 1995 VL 31 IS 14 BP 1180 EP 1182 DI 10.1049/el:19950811 PG 3 WC Engineering, Electrical & Electronic SC Engineering GA RL032 UT WOS:A1995RL03200050 ER PT J AU BOYLE, ME ADKINS, JD SNOW, AW COZZENS, RF BRADY, RF AF BOYLE, ME ADKINS, JD SNOW, AW COZZENS, RF BRADY, RF TI SYNTHESIS AND CHARACTERIZATION OF MELT-POLYMERIZABLE AMINOPHTHALOCYANINE MONOMERS SO JOURNAL OF APPLIED POLYMER SCIENCE LA English DT Article ID PHTHALOCYANINE AB The strategy, synthesis, and characterization of a soluble amine-functionalized phthalocyanine monomer and two examples of its polymerization into optically transparent glasses are reported. A simple, fast, and versatile method for incorporating metal ions into the metal-free phthalocyanine is demonstrated. Measurements of the nonlinear optical properties associated with a lead-substituted phthalocyanine/urethane copolymer are also reported. (C) 1995 John Wiley and Sons, Inc. RP BOYLE, ME (reprint author), USN,RES LAB,MAT CHEM BRANCH,WASHINGTON,DC 20375, USA. NR 12 TC 13 Z9 13 U1 1 U2 2 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 JUL 5 PY 1995 VL 57 IS 1 BP 77 EP 85 DI 10.1002/app.1995.070570108 PG 9 WC Polymer Science SC Polymer Science GA RC734 UT WOS:A1995RC73400008 ER PT J AU BROIDO, DA REINECKE, TL AF BROIDO, DA REINECKE, TL TI THERMOELECTRIC FIGURE OF MERIT OF QUANTUM-WIRE SUPERLATTICES SO APPLIED PHYSICS LETTERS LA English DT Article C1 USN,RES LAB,WASHINGTON,DC 20375. RP BROIDO, DA (reprint author), BOSTON COLL,DEPT PHYS,CHESTNUT HILL,MA 02167, USA. NR 18 TC 58 Z9 60 U1 2 U2 12 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 3 PY 1995 VL 67 IS 1 BP 100 EP 102 DI 10.1063/1.115495 PG 3 WC Physics, Applied SC Physics GA RF829 UT WOS:A1995RF82900034 ER PT J AU LINDNER, JF MEADOWS, BK DITTO, WL INCHIOSA, ME BULSARA, AR AF LINDNER, JF MEADOWS, BK DITTO, WL INCHIOSA, ME BULSARA, AR TI ARRAY ENHANCED STOCHASTIC RESONANCE AND SPATIOTEMPORAL SYNCHRONIZATION SO PHYSICAL REVIEW LETTERS LA English DT Article ID SYSTEMS C1 COLL WOOSTER, WOOSTER, OH 44691 USA. USN COMMAND, CTR CONTROL & OCEAN SURVEILLANCE, DIV RES DEV TEST & EVALUAT, MAT RES BRANCH, SAN DIEGO, CA 92152 USA. RP LINDNER, JF (reprint author), GEORGIA INST TECHNOL, SCH PHYS, APPL CHAOS LAB, ATLANTA, GA 30332 USA. OI Ditto, William/0000-0002-7416-8012 NR 21 TC 371 Z9 374 U1 1 U2 11 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 JUL 3 PY 1995 VL 75 IS 1 BP 3 EP 6 DI 10.1103/PhysRevLett.75.3 PG 4 WC Physics, Multidisciplinary SC Physics GA RF700 UT WOS:A1995RF70000002 ER PT J AU ABE, K AKAGI, T ANTHONY, PL ANTONOV, R ARNOLD, RG AVERETT, T BAND, HR BAUER, JM BOREL, H BOSTED, PE BRETON, V BUTTONSHAFER, J CHEN, JP CHUPP, TE CLENDENIN, J COMPTOUR, C COULTER, KP COURT, G CRABB, D DAOUDI, M DAY, D DIETRICH, FS DUNNE, J DUTZ, H ERBACHER, R FELLBAUM, J FELTHAM, A FONVIEILLE, H FRLEZ, E GARVEY, D GEARHART, R GOMEZ, J GRENIER, PO GRIFFIOEN, KA HOIBRATEN, S HUGHES, EW HYDEWRIGHT, C JOHNSON, JR KAWALL, D KLEIN, A KUHN, SE KURIKI, M LINDGREN, R LIU, T LOMBARDNELSEN, RM MARRONCLE, J MARUYAMA, T MARUYAMA, XK MCCARTHY, J MEYER, W MEZIANI, ZE MINEHART, R MITCHELL, J MORGENSTERN, J PETRATOS, GG PITTHAN, R POCANIC, D PRESCOTT, C PREPOST, R RAINES, P RAUE, B REYNA, D RIJLLART, A ROBLIN, Y ROCHESTER, LS ROCK, SE RONDON, OA SICK, I SMITH, LC SMITH, TB SPENGOS, M STALEY, F STEINER, P STLORANT, S STUART, LM SUEKANE, F SZALATA, ZM TANG, H TERRIEN, Y USHER, T WALZ, D WHITE, JL WITTE, K YOUNG, CC YOUNGMAN, B YUTA, H ZAPALAC, G ZIHLMANN, B ZIMMERMANN, D AF ABE, K AKAGI, T ANTHONY, PL ANTONOV, R ARNOLD, RG AVERETT, T BAND, HR BAUER, JM BOREL, H BOSTED, PE BRETON, V BUTTONSHAFER, J CHEN, JP CHUPP, TE CLENDENIN, J COMPTOUR, C COULTER, KP COURT, G CRABB, D DAOUDI, M DAY, D DIETRICH, FS DUNNE, J DUTZ, H ERBACHER, R FELLBAUM, J FELTHAM, A FONVIEILLE, H FRLEZ, E GARVEY, D GEARHART, R GOMEZ, J GRENIER, PO GRIFFIOEN, KA HOIBRATEN, S HUGHES, EW HYDEWRIGHT, C JOHNSON, JR KAWALL, D KLEIN, A KUHN, SE KURIKI, M LINDGREN, R LIU, T LOMBARDNELSEN, RM MARRONCLE, J MARUYAMA, T MARUYAMA, XK MCCARTHY, J MEYER, W MEZIANI, ZE MINEHART, R MITCHELL, J MORGENSTERN, J PETRATOS, GG PITTHAN, R POCANIC, D PRESCOTT, C PREPOST, R RAINES, P RAUE, B REYNA, D RIJLLART, A ROBLIN, Y ROCHESTER, LS ROCK, SE RONDON, OA SICK, I SMITH, LC SMITH, TB SPENGOS, M STALEY, F STEINER, P STLORANT, S STUART, LM SUEKANE, F SZALATA, ZM TANG, H TERRIEN, Y USHER, T WALZ, D WHITE, JL WITTE, K YOUNG, CC YOUNGMAN, B YUTA, H ZAPALAC, G ZIHLMANN, B ZIMMERMANN, D TI PRECISION-MEASUREMENT OF THE DEUTERON SPIN STRUCTURE-FUNCTION G(1)(D) SO PHYSICAL REVIEW LETTERS LA English DT Article ID INELASTIC E-P; SCATTERING CROSS-SECTIONS; BJORKEN SUM-RULE; POLARIZED PROTONS; GLOBAL ANALYSIS; ELECTROPRODUCTION; ASYMMETRY; EXCHANGE; LEPTONS C1 AMERICAN UNIV,WASHINGTON,DC 20016. UNIV BASEL,INST PHYS,CH-4056 BASEL,SWITZERLAND. UNIV CLERMONT FERRAND,PHYS CORPUSCULAIRE LAB,CNRS,IN2P3,F-63170 CLERMONT FERRAND,FRANCE. CONTINUOUS ELECTRON BEAM ACCELERATOR FACIL CTR,NEWPORT NEWS,VA 23606. CTR ETUD SACLAY,SERV PHYS NUCL,DAPNIA,F-91191 GIF SUR YVETTE,FRANCE. LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. UNIV MASSACHUSETTS,AMHERST,MA 01003. UNIV MICHIGAN,ANN ARBOR,MI 48109. USN,POSTGRAD SCH,MONTEREY,CA 93943. OLD DOMINION UNIV,NORFOLK,VA 23529. UNIV PENN,PHILADELPHIA,PA 19104. STANFORD LINEAR ACCELERATOR CTR,STANFORD,CA 94309. STANFORD UNIV,STANFORD,CA 94305. TEMPLE UNIV,PHILADELPHIA,PA 19122. UNIV VIRGINIA,CHARLOTTESVILLE,VA 22901. UNIV WISCONSIN,MADISON,WI 53706. UNIV LIVERPOOL,OLIVER LODGE LAB,LIVERPOOL L69 3BX,MERSEYSIDE,ENGLAND. CERN,CH-1211 GENEVA 23,SWITZERLAND. UNIV BONN,D-53313 BONN,GERMANY. RP ABE, K (reprint author), TOHOKU UNIV,SENDAI,MIYAGI 980,JAPAN. RI Averett, Todd/A-2969-2011; Rondon Aramayo, Oscar/B-5880-2013; Frlez, Emil/B-6487-2013; Day, Donal/C-5020-2015 OI Day, Donal/0000-0001-7126-8934 NR 44 TC 260 Z9 260 U1 0 U2 0 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 JUL 3 PY 1995 VL 75 IS 1 BP 25 EP 28 DI 10.1103/PhysRevLett.75.25 PG 4 WC Physics, Multidisciplinary SC Physics GA RF700 UT WOS:A1995RF70000007 ER PT J AU VOHRA, ST FABINY, L BUCHOLTZ, F AF VOHRA, ST FABINY, L BUCHOLTZ, F TI SUPPRESSED AND INDUCED CHAOS BY NEAR-RESONANT PERTURBATION OF BIFURCATIONS SO PHYSICAL REVIEW LETTERS LA English DT Article ID PERIOD-DOUBLING SYSTEMS; PARAMETRIC PERTURBATIONS; NOISE RISE; DYNAMICS; LASER RP VOHRA, ST (reprint author), USN,RES LAB,CODE 5675,WASHINGTON,DC 20375, USA. NR 24 TC 39 Z9 39 U1 0 U2 1 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 JUL 3 PY 1995 VL 75 IS 1 BP 65 EP 68 DI 10.1103/PhysRevLett.75.65 PG 4 WC Physics, Multidisciplinary SC Physics GA RF700 UT WOS:A1995RF70000017 ER PT J AU CHEN, CT IDZERDA, YU LIN, HJ SMITH, NV MEIGS, G CHABAN, E HO, GH PELLEGRIN, E SETTE, F AF CHEN, CT IDZERDA, YU LIN, HJ SMITH, NV MEIGS, G CHABAN, E HO, GH PELLEGRIN, E SETTE, F TI EXPERIMENTAL CONFIRMATION OF THE X-RAY MAGNETIC CIRCULAR-DICHROISM SUM-RULES FOR IRON AND COBALT SO PHYSICAL REVIEW LETTERS LA English DT Article ID ORBITAL MAGNETISM; NICKEL; NI; CO; MULTILAYERS; EDGES; SPIN; FE C1 USN,RES LAB,WASHINGTON,DC 20375. UNIV PENN,DEPT PHYS,PHILADELPHIA,PA 19104. RP CHEN, CT (reprint author), AT&T BELL LABS,600 MT AVE,MURRAY HILL,NJ 07974, USA. NR 26 TC 1059 Z9 1069 U1 14 U2 112 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 JUL 3 PY 1995 VL 75 IS 1 BP 152 EP 155 DI 10.1103/PhysRevLett.75.152 PG 4 WC Physics, Multidisciplinary SC Physics GA RF700 UT WOS:A1995RF70000039 ER PT J AU GREBENC, ML GORMAN, JD SUMIDA, FK AF GREBENC, ML GORMAN, JD SUMIDA, FK TI FIBROUS PSEUDOTUMOR OF THE TUNICA VAGINALIS TESTIS - IMAGING APPEARANCE SO ABDOMINAL IMAGING LA English DT Article DE PARATESTICULAR; FIBROUS PSEUDOTUMOR; TUNICA VAGINALIS; MAGNETIC RESONANCE IMAGING; ULTRASOUND; HEMISCROTUM ID TUMOR AB Fibrous pseudotumor is a benign paratesticular tumor that typically presents as a painless mass of the hemiscrotum, Because this tumor can mimic a malignant process, it is usually not diagnosed preoperatively. We describe a case of fibrous pseudotumor of the tunica vaginalis, demonstrating the ultrasound and magnetic resonance image (MRI) appearance with pathologic correlation. C1 USN,MED CTR,INVEST CLIN,SAN DIEGO,CA 92134. USN,MED CTR,DIV ANAT PATHOL LAB,SAN DIEGO,CA 92134. RP GREBENC, ML (reprint author), USN,MED CTR,DEPT RADIOL,SAN DIEGO,CA 92134, USA. NR 7 TC 17 Z9 18 U1 0 U2 0 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0942-8925 J9 ABDOM IMAGING JI Abdom. Imaging PD JUL-AUG PY 1995 VL 20 IS 4 BP 379 EP 380 DI 10.1007/BF00203377 PG 2 WC Gastroenterology & Hepatology; Radiology, Nuclear Medicine & Medical Imaging SC Gastroenterology & Hepatology; Radiology, Nuclear Medicine & Medical Imaging GA RG148 UT WOS:A1995RG14800022 PM 7549749 ER PT J AU LEWIS, D SINGH, M FISHMAN, SG AF LEWIS, D SINGH, M FISHMAN, SG TI IN-SITU COMPOSITES SO ADVANCED MATERIALS & PROCESSES LA English DT Article C1 NASA,LEWIS RES CTR,CLEVELAND,OH 44135. USN,RES LAB,WASHINGTON,DC 20375. OFF NAVAL RES,ARLINGTON,TX. NR 0 TC 4 Z9 4 U1 0 U2 0 PU ASM INTERNATIONAL PI MATERIALS PARK PA SUBSCRIPTIONS SPECIALIST CUSTOMER SERVICE, MATERIALS PARK, OH 44073-0002 SN 0026-0665 J9 ADV MATER PROCESS JI Adv. Mater. Process. PD JUL PY 1995 VL 148 IS 1 BP 29 EP 31 PG 3 WC Materials Science, Multidisciplinary SC Materials Science GA TA323 UT WOS:A1995TA32300005 ER PT J AU SHAW, JK SIRKIS, JS FRIEBELE, EJ JONES, RT KERSEY, AD AF SHAW, JK SIRKIS, JS FRIEBELE, EJ JONES, RT KERSEY, AD TI MODEL OF TRANSVERSE PLATE IMPACT DYNAMICS FOR DESIGN OF IMPACT DETECTION METHODOLOGIES SO AIAA JOURNAL LA English DT Article ID NEURAL NETWORKS; DAMAGE AB A closed-form analytical description of the deformation in a fully clamped, homogeneous, and isotropic rectangular plate subjected to transverse impact is presented. This solution is used to design two artificial neural network-based impact location techniques. C1 UNIV MARYLAND,CTR SMART STRUCT RES & DEV,DEPT MECH ENGN,COLLEGE PK,MD 20742. USN,RES LAB,DIV OPT SCI,WASHINGTON,DC 20375. UNIV MARYLAND,DEPT MECH ENGN,COLLEGE PK,MD 20742. RP SHAW, JK (reprint author), VIRGINIA POLYTECH INST & STATE UNIV,DEPT MATH,BLACKSBURG,VA 24061, USA. NR 18 TC 14 Z9 15 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0001-1452 J9 AIAA J JI AIAA J. PD JUL PY 1995 VL 33 IS 7 BP 1327 EP 1334 DI 10.2514/3.12553 PG 8 WC Engineering, Aerospace SC Engineering GA RG319 UT WOS:A1995RG31900020 ER PT J AU BRUNER, CWS AF BRUNER, CWS TI GEOMETRIC-PROPERTIES OF ARBITRARY POLYHEDRA IN TERMS OF FACE GEOMETRY SO AIAA JOURNAL LA English DT Note RP BRUNER, CWS (reprint author), USN,CTR AIR WARFARE,AERODYNAM & PERFORMANCE BRANCH,CODE 4-3-2-1,MAIL STOP 2,BLDG 1403,PATUXENT RIVER,MD 20670, USA. NR 3 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 0001-1452 J9 AIAA J JI AIAA J. PD JUL PY 1995 VL 33 IS 7 BP 1350 EP 1350 DI 10.2514/3.12556 PG 1 WC Engineering, Aerospace SC Engineering GA RG319 UT WOS:A1995RG31900023 ER PT J AU DEMIERI, P LEHNER, W KISER, WR AF DEMIERI, P LEHNER, W KISER, WR TI THERMOMETRY FOR DIAGNOSING ACUTE OTITIS-MEDIA SO AMERICAN JOURNAL OF EMERGENCY MEDICINE LA English DT Letter RP DEMIERI, P (reprint author), USN HOSP,DEPT FAMILY PRACTICE,JACKSONVILLE,FL 32214, 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 0735-6757 J9 AM J EMERG MED JI Am. J. Emerg. Med. PD JUL PY 1995 VL 13 IS 4 BP 491 EP 492 DI 10.1016/0735-6757(95)90153-1 PG 2 WC Emergency Medicine SC Emergency Medicine GA RK511 UT WOS:A1995RK51100034 PM 7605548 ER PT J AU MALONE, JL WALLACE, MR HENDRICK, BB LAROCCO, A TONON, E BRODINE, SK BOWLER, WA LAVIN, BS HAWKINS, RE OLDFIELD, EC AF MALONE, JL WALLACE, MR HENDRICK, BB LAROCCO, A TONON, E BRODINE, SK BOWLER, WA LAVIN, BS HAWKINS, RE OLDFIELD, EC TI SYPHILIS AND NEUROSYPHILIS IN A HUMAN-IMMUNODEFICIENCY-VIRUS TYPE-1 SEROPOSITIVE POPULATION - EVIDENCE FOR FREQUENT SEROLOGIC RELAPSE AFTER THERAPY SO AMERICAN JOURNAL OF MEDICINE LA English DT Article ID SECONDARY SYPHILIS; HIV-INFECTION; LATENT SYPHILIS; RISK; ASSOCIATION; DIAGNOSIS; PATIENT; CLINICS AB OBJECTIVE: To describe clinical and treatment aspects of syphilis infection among patients seropositive for the human immunodeficiency virus (HIV). PATIENTS AND METHODS: Results of serologic tests for syphilis, CD4+ T-lymphocyte counts, and clinical response to therapy were retrospectively monitored in 100 HIV-infected adults with syphilis from a tertiary-care military HIV program. RESULTS: Of the 1,206 HIV-infected patients, 100 (8.3%) in the cohort had syphilis; 61 patients were treated for active syphilis. Serologic or clinical relapse eventually occurred in 10 of the 56 treated patients (17.9%) with follow-up available; 7 of the 10 who relapsed had previously received high-dose intravenous or procaine penicillin therapy. Relapse occurred more than 12 months after initial therapy in 6 of 10 patients (60%) who experienced relapse; 5 patients experienced multiple relapses. The mean CD4+ T-lymphocyte count was not predictive of relapse. Patients with reactive cerebrospinal fluid (CSF) Venereal Disease Research Laboratory (VDRL) test titers (4 of 7 patients [57%]) or the rash of secondary syphilis (4 of 14 patients [29%]) were at highest risk of subsequent relapse or treatment failure when monitored for an average of 2 years. CONCLUSION: Standard penicillin regimens, including high-dose intravenous penicillin, transiently lowered serum VDRL titers in nearly ail cases, but were sometimes inadequate in preventing serologic and clinical relapse in patients infected with HIV type-1, especially among those with secondary syphilis and reactive CSF VDRL titers. Careful long-term follow-up is essential, and repeated courses of therapy may be needed for patients infected with HIV type-1 who have syphilis. C1 USN,MED CTR,DEPT INTERNAL MED,DIV INFECT DIS,SAN DIEGO,CA. USN,MED CTR,DEPT CLIN INVEST,SAN DIEGO,CA. USN HOSP,DEPT INTERNAL MED,PORTSMOUTH,HANTS,ENGLAND. NR 30 TC 62 Z9 68 U1 0 U2 2 PU CAHNERS PUBL CO PI NEW YORK PA 249 WEST 17 STREET, NEW YORK, NY 10011 SN 0002-9343 J9 AM J MED JI Am. J. Med. PD JUL PY 1995 VL 99 IS 1 BP 55 EP 63 DI 10.1016/S0002-9343(99)80105-3 PG 9 WC Medicine, General & Internal SC General & Internal Medicine GA RH259 UT WOS:A1995RH25900010 PM 7598143 ER PT J AU COLEMAN, AL HILL, R WILSON, MR CHOPLIN, N KOTASNEUMANN, R TAM, M BACHARACH, J PANEK, WC AF COLEMAN, AL HILL, R WILSON, MR CHOPLIN, N KOTASNEUMANN, R TAM, M BACHARACH, J PANEK, WC TI INITIAL CLINICAL-EXPERIENCE WITH THE AHMED GLAUCOMA VALVE IMPLANT SO AMERICAN JOURNAL OF OPHTHALMOLOGY LA English DT Article ID PLATE MOLTENO IMPLANT; SINGLE-PLATE; COMPLICATED GLAUCOMAS; SURGERY; TUBE AB PURPOSE: We studied the Ahmed Glaucoma Valve implant, an aqueous shunting device that has a unidirectional valve mechanism designed to prevent postoperative hypotony in eyes with in tractable glaucoma. METHODS: In this multicenter, prospective clinical trial, we studied 60 eyes (60 patients) with increased intraocular pressure or glaucoma that had not responded to medical treatment, laser photocoagulation, or previous glaucoma surgery, in which the Ahmed Glaucoma Valve implant was placed to decrease intraocular pressure. RESULTS: Success was defined as intraocular pressure less than 22 mm Hg and greater than 4 mm Hg for two months or longer, intraocular pressure that was lowered by at least 20% from preoperative values (in eyes with preoperative intraocular pressures less than 22 mm Hg), and no additional glaucoma surgery or visually devastating complications. Cumulative probability of success at 12 months was 78%. Eight (13%) of 60 eyes had intraocular pressure less than 5 mm Hg the first postoperative day, Two other eyes had shallow anterior chambers, which required anterior chamber reformation. The major complications associated with the use of the valve were serous choroidal detachments in 13 eyes (22%), blockage of the tube in six eyes (10%), malposition of the tube in four eyes (7%), a suprachoroidal hemorrhage in one eye (2%), and corneal graft rejections in three (19%) of 16 eyes with corneal grafts. CONCLUSIONS: Although the 12-month success with the Ahmed Glaucoma Valve implant is similar to that reported for other drainage devices, the complications associated with overfiltration in the immediate postoperative period appear to be less frequent than with other valved drainage devices, Randomized, prospective studies to compare the Ahmed Glaucoma Valve implant with other drainage devices are needed to make clinical comparisons of the different devices. C1 UNIV CALIF IRVINE,SCH MED,DEPT OPHTHALMOL,IRVINE,CA 92717. USN,MED CTR,SAN DIEGO,CA 92152. CHAIM SHEBA MED CTR,GOLDSCHLEGER EYE INST,IL-52621 TEL HASHOMER,ISRAEL. CALIF PACIFIC MED CTR,SAN FRANCISCO,CA. VET ADM OUTPATIENT CLIN,SACRAMENTO,CA. RP COLEMAN, AL (reprint author), UNIV CALIF LOS ANGELES,SCH MED,JULES STEIN EYE INST,100 STEIN PLAZA,LOS ANGELES,CA 90024, USA. NR 18 TC 183 Z9 197 U1 0 U2 3 PU OPHTHALMIC PUBL CO PI CHICAGO PA 77 WEST WACKER DR, STE 660, CHICAGO, IL 60601 SN 0002-9394 J9 AM J OPHTHALMOL JI Am. J. Ophthalmol. PD JUL PY 1995 VL 120 IS 1 BP 23 EP 31 PG 9 WC Ophthalmology SC Ophthalmology GA RH066 UT WOS:A1995RH06600003 PM 7611326 ER PT J AU BYNUM, EB BARRACK, RL ALEXANDER, AH AF BYNUM, EB BARRACK, RL ALEXANDER, AH TI OPEN VERSUS CLOSED CHAIN KINETIC EXERCISES AFTER ANTERIOR CRUCIATE LIGAMENT RECONSTRUCTION - A PROSPECTIVE RANDOMIZED STUDY SO AMERICAN JOURNAL OF SPORTS MEDICINE LA English DT Article AB We conducted a prospective, randomized study of open and closed kinetic chain exercises during accelerated rehabilitation after anterior cruciate ligament reconstruction to determine if closed kinetic chain exercises are safe and if they offer any advantages over conventional rehabilitation. The closed kinetic chain group used a length of elastic tubing, the Sport Cord, to perform weightbearing exercises and the open kinetic chain group used conventional physical therapy equipment. Results are reported with a minimum 1-year followup (mean, 19 months), Pre- and postoperative evaluation included the Lysholm knee function scoring scale, Tegner activity rating scale and KT-1000 arthrometer measurements. Overall, stability was restored in over 90% of the knees. Preoperative patellofemoral pain was reduced significantly; 95% of the patients had a full range of motion, The closed kinetic chain group had lower mean KT-1000 arthrometer side-to-side differences, less patellofemoral pain, was generally more satisfied with the end result, and more often thought they returned to normal daily activities and sports sooner than expected, We concluded that closed kinetic chain exercises are safe and effective and offer some important advantages over open kinetic chain exercises. As a result of this study, we now use the closed kinetic chain protocol exclusively after anterior cruciate ligament reconstruction. C1 USN,MED CTR,DEPT ORTHOPAED SURG,OAKLAND,CA 94627. NR 0 TC 150 Z9 155 U1 2 U2 16 PU AMER ORTHOPAEDIC SOC SPORT MED PI WALTHAM PA 230 CALVARY STREET, WALTHAM, MA 02154 SN 0363-5465 J9 AM J SPORT MED JI Am. J. Sports Med. PD JUL-AUG PY 1995 VL 23 IS 4 BP 401 EP 406 DI 10.1177/036354659502300405 PG 6 WC Orthopedics; Sport Sciences SC Orthopedics; Sport Sciences GA RJ945 UT WOS:A1995RJ94500005 PM 7573647 ER PT J AU HENNRIKUS, WL MAPES, RC BRATTON, MW LAPOINT, JM AF HENNRIKUS, WL MAPES, RC BRATTON, MW LAPOINT, JM TI LATERAL TRACTION DURING SHOULDER ARTHROSCOPY - ITS EFFECT ON TISSUE PERFUSION MEASURED BY PULSE OXIMETRY SO AMERICAN JOURNAL OF SPORTS MEDICINE LA English DT Article AB We studied the effect of three methods of shoulder traction during arthroscopy on arterial oxygen saturation measured by a pulse oximeter applied to the fingertip of the arm in traction. Simple longitudinal traction ablated the oxygen saturation in only 1 of 30 patients. Adding vertical traction perpendicular to the arm ablated the oxygen saturation in 25 of 30 patients when a 2-inch wide sling was used and in 7 of 30 patients when a 4-inch sling was used. In this series, the pulse oximeter did not demonstrate gradual gradations in arterial oxygen saturation loss. Rather, the pulse oximeter provided an all-or-none warning signal for tissue hypoxia. RP HENNRIKUS, WL (reprint author), USN HOSP,DEPT ORTHOPAED SURG & CLIN INVEST,SAN DIEGO,CA 92134, USA. NR 0 TC 10 Z9 11 U1 0 U2 0 PU AMER ORTHOPAEDIC SOC SPORT MED PI WALTHAM PA 230 CALVARY STREET, WALTHAM, MA 02154 SN 0363-5465 J9 AM J SPORT MED JI Am. J. Sports Med. PD JUL-AUG PY 1995 VL 23 IS 4 BP 444 EP 446 DI 10.1177/036354659502300412 PG 3 WC Orthopedics; Sport Sciences SC Orthopedics; Sport Sciences GA RJ945 UT WOS:A1995RJ94500012 PM 7573654 ER PT J AU WEDDLE, JR CHAN, TC THOMPSON, K PAXTON, H KELLY, DJ DASCH, G STRICKMAN, D AF WEDDLE, JR CHAN, TC THOMPSON, K PAXTON, H KELLY, DJ DASCH, G STRICKMAN, D TI EFFECTIVENESS OF A DOT-BLOT IMMUNOASSAY OF ANTI-RICKETTSIA TSUTSUGAMUSHI ANTIBODIES FOR SEROLOGIC ANALYSIS OF SCRUB TYPHUS SO AMERICAN JOURNAL OF TROPICAL MEDICINE AND HYGIENE LA English DT Article ID ILLNESS AB We compared a commercially available dot-blot immunoassay system with the indirect immunofluorescence assay (IFA) in tests of known negative and known positive sera from scrub typhus cases. Using a panel of 100 sera from patients with various rickettsial and nonrickettsial infections, we observed that the IFA was 99% specific and the dipstick assay was 98% specific. In tests of 91 sera (30 negative and 61 positive for scrub typhus antibodies) from a study of febrile patients in Malaysia, using the standard of an IFA titer < 1:64 as negative, an IFA titer > 1:128 as positive, and an IFA titer = 1:64 as either positive or negative (supported by clinical records), dipsticks were 83% specific and 90% sensitive. The quantitative correlation of the dipsticks to IFA titers was confirmed by significant differences in geometric means of inverse IFA titers corresponding to the number of positive dipstick spots (no dots = 8.5, one dot = 43.3, two dots = 206.7, and three dots = 676.9). The assay would enable physicians and public health workers who deal with patients to quickly diagnose and appropriately treat most cases of the disease, especially in areas of high prevalence where the proportion of false-positve results to true-positive results would be low. C1 WALTER REED ARMY MED CTR,DEPT CLIN INVEST,WASHINGTON,DC 20307. WALTER REED ARMY INST RES,DEPT RICKETTSIAL DIS,WASHINGTON,DC 20307. INTEGRATED DIAGNOST INC,BALTIMORE,MD 21227. RP WEDDLE, JR (reprint author), USN,MED RES INST,VIRAL & RICKETTSIAL DIS PROGRAM,8901 WISCONSIN AVE,BETHESDA,MD 20889, USA. NR 25 TC 28 Z9 29 U1 0 U2 0 PU AMER SOC TROP MED & HYGIENE PI MCLEAN PA 8000 WESTPARK DRIVE SUITE 130, MCLEAN, VA 22101 SN 0002-9637 J9 AM J TROP MED HYG JI Am. J. Trop. Med. Hyg. PD JUL PY 1995 VL 53 IS 1 BP 43 EP 46 PG 4 WC Public, Environmental & Occupational Health; Tropical Medicine SC Public, Environmental & Occupational Health; Tropical Medicine GA RL499 UT WOS:A1995RL49900008 PM 7625532 ER PT J AU MUNOZ, C BAQAR, S VANDEVERG, L THUPARI, J GOLDBLUM, S OLSON, JG TAYLOR, DN HERESI, GP MURPHY, JR AF MUNOZ, C BAQAR, S VANDEVERG, L THUPARI, J GOLDBLUM, S OLSON, JG TAYLOR, DN HERESI, GP MURPHY, JR TI CHARACTERISTICS OF SHIGELLA-SONNEI INFECTION OF VOLUNTEERS - SIGNS, SYMPTOMS, IMMUNE-RESPONSES, CHANGES IN SELECTED CYTOKINES AND ACUTE-PHASE SUBSTANCES SO AMERICAN JOURNAL OF TROPICAL MEDICINE AND HYGIENE LA English DT Article ID TUMOR NECROSIS FACTOR; FALCIPARUM-MALARIA; PERIPHERAL-BLOOD; SECRETING CELLS; VACCINE; HUMANS; INTERLEUKIN-1-BETA; RADIOIMMUNOASSAY; DIARRHEA; INVIVO AB Shigella sonnei infection resulting from oral administration of 500 colony-forming units was followed in 11 volunteers with the objective of studying the immune response and pathogenesis. Characterization of infection included recording of signs and symptoms, excretion of S. sonnei in stool, measurement of humoral tumor necrosis factor-alpha (TNF-(a)lpha), interleukin-1 beta (IL-1 beta), interferon-gamma (IFN-gamma), C-reactive protein, IL-2 receptor, soluble CD8, antibody-antigen complexes, and endotoxin. Measurements were also made of the immune response including lymphocytes secreting antibody to S. sonnei O antigen and serum antibody to this antigen. Six of the volunteers developed typical shigellosis with excretion of bacteria in stool and systemic signs and symptoms, three excreted bacteria but did not show illness, and two showed no evidence of infection or illness. Shigellosis was characterized by excretion in stool of S. sonnei beginning on average 1.3 days after ingestion. Excretion of S. sonnei (mean of time of the first positive cultures) was followed in sequence by the onset of increases in TNF-alpha (10 hr), liquid stools (14 hr), fever and dysentery (18 hr), IFN-gamma (22 hr), and C-reactive protein (34 hr). A S. sonnei-specific immune response was demonstrated somewhat later, between days 4 and 7 postinfection by antibody-secreting cells, and between days 7 and 14 postinfection by humoral antibody. Shigellosis was not associated with increased humoral IL-1 beta, endotoxin, or antigen-antibody complexes. C1 UNIV MARYLAND,SCH MED,DEPT MED,DIV INFECT DIS,BALTIMORE,MD 21001. WALTER REED ARMY MED CTR,WALTER REED ARMY INST RES,DEPT BACTERIAL DIS,WASHINGTON,DC 20307. UNIV TEXAS,HLTH SCI CTR,SCH PUBL HLTH,CTR INFECT DIS,HOUSTON,TX 77030. UNIV TEXAS,HLTH SCI CTR,SCH MED,DEPT PEDIAT,HOUSTON,TX 77030. UNIV MARYLAND,SCH MED,DEPT MED,DIV GEOG MED,BALTIMORE,MD 21201. USN,MED RES UNIT 3,ENTER PROGRAM,CAIRO,EGYPT. USN,MED RES UNIT 3,DIV CLIN INVEST,CAIRO,EGYPT. NR 36 TC 22 Z9 22 U1 0 U2 1 PU AMER SOC TROP MED & HYGIENE PI MCLEAN PA 8000 WESTPARK DRIVE SUITE 130, MCLEAN, VA 22101 SN 0002-9637 J9 AM J TROP MED HYG JI Am. J. Trop. Med. Hyg. PD JUL PY 1995 VL 53 IS 1 BP 47 EP 54 PG 8 WC Public, Environmental & Occupational Health; Tropical Medicine SC Public, Environmental & Occupational Health; Tropical Medicine GA RL499 UT WOS:A1995RL49900009 PM 7542845 ER PT J AU SHARP, TW WALLACE, MR HAYES, CG SANCHEZ, JL DEFRAITES, RF ARTHUR, RR THORNTON, SA BATCHELOR, RA ROZMAJZL, PJ HANSON, RK WU, SJ BURANS, JP AF SHARP, TW WALLACE, MR HAYES, CG SANCHEZ, JL DEFRAITES, RF ARTHUR, RR THORNTON, SA BATCHELOR, RA ROZMAJZL, PJ HANSON, RK WU, SJ BURANS, JP TI DENGUE FEVER IN US TROOPS DURING OPERATION-RESTORE-HOPE, SOMALIA, 1992-1993 SO AMERICAN JOURNAL OF TROPICAL MEDICINE AND HYGIENE LA English DT Article ID IDENTIFICATION; VIRUS; ASSAY AB Dengue fever (DF) was considered to be a potential cause of febrile illness in U.S. troops deployed to Somalia during Operation Restore Hope in 1992-1993. A prospective study of hospitalized troops with fever and a seroepidemiologic survey of 530 troops were conducted. Among 289 febrile troops hospitalized, 129 (45%) did not have an identified cause of their fever. Dengue (DEN) virus was recovered from 41 (43%) of 96 of these patients by inoculation of admission sera into C6/36 cell cultures. Thirty-nine (41%) of the isolates were identified as DEN-2 and two (2%) as DEN-3 by an indirect immunofluorescent antibody assay. An additional 18 (49%) of 37 culture-negative cases were shown by immunoglobulin M (IgM) antibody capture enzyme-linked immunosorbent assay to have anti-DEN virus antibody. All identified DF cases recovered within 1-2 weeks; no case of dengue hemorrhagic fever or shock syndrome was observed. A seroepidemiologic survey of a unit (n = 494) with 17 culture or serologically identified DF cases and a 13% attack rate of unidentified febrile illness revealed a 7.7% prevalence of anti-DEN virus IgM antibody. Failure to use bed nets was the only identified risk factor for DEN infection (adjusted odds ratio = 2.2, 95% confidence interval = 1.4-3.0). These data indicate that DF was an important cause of febrile illness among US troops in Somalia, and demonstrate the difficulties in preventing DEN infection in troops operating in field conditions. C1 USN,MED RES UNIT 3,CAIRO,EGYPT. USN,ENVIRONM & PREVENT MED UNIT 7,NAPLES,ITALY. USN,ENVIRONM & PREVENT MED UNIT 6,HONOLULU,HI. USN,MED CTR,OAKLAND,CA. JOHNS HOPKINS UNIV,BALTIMORE,MD. USN,MED CTR,DIV INFECT DIS,SAN DIEGO,CA 92134. WALTER REED ARMY INST RES,DIV PREVENT MED,WASHINGTON,DC 20307. USN,MED RES INST,BETHESDA,MD 20889. RP SHARP, TW (reprint author), US MARINE CORPS,HEADQUARTERS,CODE HS,2 NAVY ANNEX,ROOM 1116,WASHINGTON,DC 20380, USA. NR 21 TC 78 Z9 80 U1 0 U2 0 PU AMER SOC TROP MED & HYGIENE PI MCLEAN PA 8000 WESTPARK DRIVE SUITE 130, MCLEAN, VA 22101 SN 0002-9637 J9 AM J TROP MED HYG JI Am. J. Trop. Med. Hyg. PD JUL PY 1995 VL 53 IS 1 BP 89 EP 94 PG 6 WC Public, Environmental & Occupational Health; Tropical Medicine SC Public, Environmental & Occupational Health; Tropical Medicine GA RL499 UT WOS:A1995RL49900017 PM 7625541 ER PT J AU KORGEN, BJ AF KORGEN, BJ TI SEICHES SO AMERICAN SCIENTIST LA English DT Article ID COASTAL SEICHES; LARGE-AMPLITUDE; INTERNAL WAVES; SOLITARY WAVES; SULU SEA; EXCITATION RP KORGEN, BJ (reprint author), USN,OCEANOG OFF,DIV ENVIRONM PROD & STUDIES,BAY ST LOUIS,MS 39522, USA. NR 18 TC 8 Z9 8 U1 0 U2 0 PU SIGMA XI-SCI RES SOC PI RES TRIANGLE PK PA PO BOX 13975, RES TRIANGLE PK, NC 27709 SN 0003-0996 J9 AM SCI JI Am. Scientist PD JUL-AUG PY 1995 VL 83 IS 4 BP 330 EP 341 PG 12 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA RB828 UT WOS:A1995RB82800013 ER PT J AU COLLINS, GE ROSEPEHRSSON, SL AF COLLINS, GE ROSEPEHRSSON, SL TI CHEMILUMINESCENT CHEMICAL SENSORS FOR OXYGEN AND NITROGEN-DIOXIDE SO ANALYTICAL CHEMISTRY LA English DT Article ID LUMINESCENCE; DETECTOR; SYSTEM; WATER AB Chemiluminescent chemical sensors for oxygen and nitrogen dioxide have been investigated via the immobilization of 3-aminophthalhydrazide (luminol) within a hydrogel or polymeric, sorbent coating that is positioned in front of a photomultiplier tube. Some selectivity is tailored into these devices by careful section of the polymer type, pH, and metal catalyst incorporated within the film. Oxygen levels as low as 2.4 ppm in nitrogen have been detected using the oligomer fluoropolyol as the support matrix for immobilizing luminol, KOH, and the metal. catalyst, Fe-2(SO4)(3). For the detection of NO2(g), the use of sorbent, polymer coatings such as fluoropolyol or polyethylenimine resulted in strong humidity dependencies, exhibiting no chemiluminescence under dry conditions. Incorporation of the chemiluminescent reagents within a hydrogel (e.g., poly(vinyl alcohol) or superabsorbing polymer Waterlock) eliminated this effect. A survey of various hydrogel immobilization matrices and metal catalysts found that, for the determination of NO2(g), Cu(II) and the superabsorbing polymer Waterlock provided the best film performance with respect to sensitivity (0.46 ppb) and stabitity. Discussions center about the complete characterization of these chemiluminescent chemical sensors and an examination of specific methods used to extend the sensitivity and selectivity of these devices. RP COLLINS, GE (reprint author), USN,RES LAB,DIV CHEM,CODE 6110,WASHINGTON,DC 20375, USA. NR 27 TC 31 Z9 33 U1 3 U2 6 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0003-2700 J9 ANAL CHEM JI Anal. Chem. PD JUL 1 PY 1995 VL 67 IS 13 BP 2224 EP 2230 DI 10.1021/ac00109a049 PG 7 WC Chemistry, Analytical SC Chemistry GA RF792 UT WOS:A1995RF79200054 ER PT J AU YESINOWSKI, JP BUESS, ML GARROWAY, AN ZIEGEWEID, M PINES, A AF YESINOWSKI, JP BUESS, ML GARROWAY, AN ZIEGEWEID, M PINES, A TI DETECTION OF N-14 AND CL-35 IN COCAINE BASE AND HYDROCHLORIDE USING NQR, NMR, AND SQUID TECHNIQUES SO ANALYTICAL CHEMISTRY LA English DT Article ID NUCLEAR-QUADRUPOLE RESONANCE; RELAXATION MEASUREMENTS; AMINO-ACIDS; DC SQUID; SOLIDS; FIELD AB Results from N-14 pure NQR of cocaine in the free base form (cocaine base) yield a nuclear quadrupole coupling constant (NQCC) e(2)Qq/h of 5.0229 (+/-0.0001) MHz and an asymmetry parameter eta of 0.0395 (+/0.0001) at 295 K, with corresponding values of 5.0460 (+/-0.0013) MHz and 0.0353 (+/-0.000S) at 77 K. The NQR peaks of a sample of cocaine base containing similar to 1% impurities are a factor of 3 broader than those of a recrystallized sample, but spin-lattice and spin-spin relaxation times are essentially unchanged, Both pure NQR (at 295-77 K) and a superconducting quantum interference device (SQUID) detector (at 4.2 K) were used to measure the very low (<1 MHz) N-14 transition frequencies in cocaine hydrochloride; at 295 K the NQCC is 1.1780 (+/-0.0014) MHz and the asymmetry parameter is 0.2632 (+/-0.0034). Cocaine hydrochloride exhibits a broad Cl-35 pure NQR resonance at 2.53 MRz. The Cl-35 NMR spectrum at 7.0 T is that of a central 1/2 --> -1/2 transition greatly broadened by second-order quadrupolar effects. Stepping the carrier frequency enables one to obtain a powder pattern without the severe intensity distortions that otherwise arise from finite pulse power. A powder pattern simulation using an NQCC value of 5.027 MHz and an asymmetry parameter eta of 0.2 agrees reasonably well with the experimental stepped-frequency spectrum, The use of pure NQR for providing nondestructive, quantitative, and highly specific detection of crystalline compounds is discussed, as are experimental strategies. C1 UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720. UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV SCI MAT,BERKELEY,CA 94720. RP YESINOWSKI, JP (reprint author), USN,RES LAB,DIV CHEM,CODE 6122,WASHINGTON,DC 20375, USA. NR 37 TC 78 Z9 78 U1 0 U2 7 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0003-2700 J9 ANAL CHEM JI Anal. Chem. PD JUL 1 PY 1995 VL 67 IS 13 BP 2256 EP 2263 DI 10.1021/ac00109a053 PG 8 WC Chemistry, Analytical SC Chemistry GA RF792 UT WOS:A1995RF79200058 ER PT J AU DATTOLO, RA NESBIT, GM KELLY, KE CUPP, CL AF DATTOLO, RA NESBIT, GM KELLY, KE CUPP, CL TI INFILTRATING INTRAMUSCULAR LIPOMA OF THE PARASPINAL MUSCLES SO ANNALS OF OTOLOGY RHINOLOGY AND LARYNGOLOGY LA English DT Note ID HEAD; NECK; MR; LIPOSARCOMA C1 USN,MED CTR,DEPT CLIN INVEST,USNR,SAN DIEGO,CA 92134. USN,MED CTR,DEPT OTOLARYNGOL,SAN DIEGO,CA 92134. USN,MED CTR,DEPT RADIOL,SAN DIEGO,CA 92134. NR 11 TC 5 Z9 6 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 JUL PY 1995 VL 104 IS 7 BP 582 EP 584 PG 3 WC Otorhinolaryngology SC Otorhinolaryngology GA RJ908 UT WOS:A1995RJ90800014 PM 7598373 ER PT J AU GREASON, KL HEMP, JR MAXWELL, JM FETTER, JE MORENOCABRAL, RJ AF GREASON, KL HEMP, JR MAXWELL, JM FETTER, JE MORENOCABRAL, RJ TI PREVENTION OF DISTAL LIMB ISCHEMIA DURING CARDIOPULMONARY SUPPORT VIA FEMORAL CANNULATION SO ANNALS OF THORACIC SURGERY LA English DT Note AB The indications for prolonged cardiopulmonary support or extracorporeal membrane oxygenation are expanding. A potential serious complication of these techniques is distal limb ischemia. Techniques have been developed to provide the distal limb with blood now. Unfortunately, specialized skills and materials are required. We describe a simple method of providing distal limb perfusion using ordinary pressure tubing and a standard cordis catheter. This technique is capable of reproducing normal superficial femoral artery blood now. C1 USN MED CTR,DEPT GEN SURG,DIV CARDIOTHORAC SURG,SAN DIEGO,CA 92134. RP GREASON, KL (reprint author), USN MED CTR,DEPT CLIN INVEST,SAN DIEGO,CA 92134, USA. NR 7 TC 45 Z9 45 U1 0 U2 1 PU ELSEVIER SCIENCE PUBL CO 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 JUL PY 1995 VL 60 IS 1 BP 209 EP 210 PG 2 WC Cardiac & Cardiovascular Systems; Respiratory System; Surgery SC Cardiovascular System & Cardiology; Respiratory System; Surgery GA RG159 UT WOS:A1995RG15900047 PM 7598601 ER PT J AU MENG, M SUN, WQ GEELHAAR, LA KUMAR, G PATEL, AR PAYNE, GF SPEEDIE, MK STACY, JR AF MENG, M SUN, WQ GEELHAAR, LA KUMAR, G PATEL, AR PAYNE, GF SPEEDIE, MK STACY, JR TI DENITRATION OF GLYCEROL TRINITRATE BY RESTING CELLS AND CELL-EXTRACTS OF BACILLUS-THURINGIENSIS CEREUS AND ENTEROBACTER-AGGLOMERANS SO APPLIED AND ENVIRONMENTAL MICROBIOLOGY LA English DT Article ID PHANEROCHAETE-CHRYSOSPORIUM; BIOCONVERSION; NITROGLYCERIN; DEGRADATION; METABOLISM AB A number of microorganisms were selected from soil and sediment samples which were known to have been previously exposed to nitrate ester contaminants. The two most effective bacteria for transforming glycerol trinitrate (GTN) were identified as Bacillus thuringiensis/cereus and Enterobacter agglomerans. For both isolates, denitration activities were expressed constitutively and GTN was not required for induction. Dialysis of cell extracts from both isolates did not affect denitration, which indicates that dissociable and depletable cofactors are not required for denitration. With thin-layer chromatography and high-performance liquid chromatography, the denitration pathway for both isolates was shown to be a sequential denitration of GTN to glycerol dinitrate isomers, glycerol mononitrate isomers, and ultimately to glycerol. GTN was observed to be completely converted to glycerol during a long-term incubation of cell extracts. C1 UNIV MARYLAND,DEPT PHARMACEUT SCI,BALTIMORE,MD 21201. UNIV MARYLAND,DEPT CHEM & BIOCHEM ENGN,BALTIMORE,MD 21228. UNIV MARYLAND,CTR AGR BIOTECHNOL,BALTIMORE,MD 21228. USN,CTR SURFACE WARFARE,INDIAN HEAD,MD 20640. NR 18 TC 34 Z9 36 U1 1 U2 1 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 1995 VL 61 IS 7 BP 2548 EP 2553 PG 6 WC Biotechnology & Applied Microbiology; Microbiology SC Biotechnology & Applied Microbiology; Microbiology GA RG334 UT WOS:A1995RG33400016 PM 7618866 ER PT J AU WINTER, EM METCALF, TW STOTTS, LB AF WINTER, EM METCALF, TW STOTTS, LB TI SKY-RADIANCE GRADIENT MEASUREMENTS AT NARROW BANDS IN THE INVISIBLE SO APPLIED OPTICS LA English DT Article DE SKY RADIANCE; RAYLEIGH; MIE AB Accurate calibrated measurements of the radiance of the daytime sky were made in narrow bands in the visible portion of the spectrum. These measurements were made over several months and were tabulated in a sun-referenced coordinate system. The radiance as a function of wavelength at angles ranging from 5 to 90 deg was plotted. A best-fit inverse power-law fit shows inversely linear behavior of the radiance versus wavelength near the Sun (5 deg) and a slope approaching inverse-fourth power far from the Sun (60 deg). This behavior fits a Mie-scattering interpretation near the Sun and a Rayleigh-scattering interpretation away from the Sun. The results are-also compared with LOWTRAN models. C1 USN,CTR CONTROL & OCEAN SURVEILLANCE,SAN DIEGO,CA. ADV RES PROJECTS AGCY,ARLINGTON,VA 22203. RP WINTER, EM (reprint author), TECH RES ASSOCIATES INC,CAMARILLO,CA 93010, USA. NR 8 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 JUL 1 PY 1995 VL 34 IS 19 BP 3681 EP 3685 PG 5 WC Optics SC Optics GA RE615 UT WOS:A1995RE61500017 PM 21052188 ER PT J AU ZIMMERMAN, RC REGUZZONI, JL ALBERTE, RS AF ZIMMERMAN, RC REGUZZONI, JL ALBERTE, RS TI EELGRASS (ZOSTERA-MARINA L) TRANSPLANTS IN SAN-FRANCISCO BAY - ROLE OF LIGHT AVAILABILITY ON METABOLISM, GROWTH AND SURVIVAL SO AQUATIC BOTANY LA English DT Article DE SEAGRASS; TRANSPLANT; PHOTOSYNTHESIS; CARBON BUDGET; ZOSTERA MARINA ID LAMINARIA-LONGICRURIS; AQUATIC VEGETATION; SEASONAL GROWTH; CHESAPEAKE BAY; SEAGRASS; IRRADIANCE; PHOTOSYNTHESIS; PHYTOPLANKTON; AUSTRALIA; DECLINE AB Survival, metabolism and growth of Zostera marina L. transplants were examined along depth gradients in Keil Cove and Paradise Cove in the extremely turbid San Francisco Bay estuary. Water transparency was unusually high throughout 1989-1990 for San Francisco Bay. Transplant survival was strongly depth-dependent at Paradise Cove but not at Keil Cove. All transplants were lost below - 1.0 m depth within 1 year at Paradise Cove, but survived to depths of - 1.5 m at Keil Cove. Half the transplants growing in shallow water survived the first year at both sites. Shoot photosynthesis, respiration, growth, and sugar content did not differ between sites. Daily periods of irradiance-saturated photosynthesis (H-sat) were over 6 h all year. Seasonal photosynthetic acclimation to light availability maintained long H-sat periods and high ratios of daily whole-plant production to respiration through the winter, indicating a potential for net carbon gain throughout the year. Winter growth was 50% of the summer rate, Despite high initial losses, surviving transplants have persisted at both sites through 1994. Although eelgrass transplants can succeed in San Francisco Bay given sufficient light availability, the role of carbon reserves and transplant timing may influence transplant survival. C1 UNIV CALIF LOS ANGELES,DEPT BIOL,LOS ANGELES,CA 90024. SAN FRANCISCO STATE UNIV,PAUL F ROMBERG TIBURON CTR ENVIRONM STUDIES,TIBURON,CA 94920. OFF NAVAL RES,BIOL SCI & TECHNOL PROGRAM,ARLINGTON,VA 22217. NR 50 TC 86 Z9 94 U1 0 U2 19 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0304-3770 J9 AQUAT BOT JI Aquat. Bot. PD JUL PY 1995 VL 51 IS 1-2 BP 67 EP 86 DI 10.1016/0304-3770(95)00472-C PG 20 WC Plant Sciences; Marine & Freshwater Biology SC Plant Sciences; Marine & Freshwater Biology GA RM405 UT WOS:A1995RM40500003 ER PT J AU BROOK, I FRAZIER, EH AF BROOK, I FRAZIER, EH TI CLINICAL-FEATURES AND AEROBIC AND ANAEROBIC MICROBIOLOGICAL CHARACTERISTICS OF CELLULITIS SO ARCHIVES OF SURGERY LA English DT Article ID CUTANEOUS CELLULITIS; BACTEROIDES; ABSCESSES; ETIOLOGY; BACTERIA; ADULTS; GROWTH; COCCI AB Objectives: To investigate the aerobic and anaerobic microbiological characteristics of cellulitis and correlate them with the infection site. Design: Of 342 specimens, 64 obtained using needle aspiration and 278 using swabs were studied over 10 years. Results: Bacterial growth was noted in 15 (23%) of the 64 needle aspirates and 259 (93%) of the 278 swab aspirates. The microbial results of the 15 specimens obtained through needle aspiration are separately presented. Aerobic or facultative bacteria only were present in 138 (53%) of swab samples, anaerobic bacteria only in 69 (27%), and mixed aerobic-anaerobic nora in 52 (20%). In total, there were 582 isolates, 247 aerobic or facultative and 335 anaerobic bacteria, with an average of 2.2 isolates per specimen. The predominance of certain isolates in different anatomical sites correlated with their distribution in the normal flora adjacent to the infected site. The highest recovery rates of anaerobes was from the neck, trunk, groin, external genitalia, and leg areas. Aerobes outnumbered anaerobes in the arm and hand. The predominant aerobes were Staphylococcus aureus, group A streptococci, and Escherichia coli. The predominant anaerobes were Peptostreptococcus sp, Bacteroides fragilis group, Prevotella and Porphyromonas sp, and Clostridium sp. Certain clinical findings correlated with the following organisms: swelling and tenderness with Clostridium sp, Prevotella sp, S aureus, and group A streptococci; regional adenopathy with B fragilis group; bulbous lesions with Enterobacteriaceae; gangrene and necrosis with Peptostreptococcus sp, B fragilis group, Clostridium sp, and Enterobacteriaceae; foul odor with Bacteroides sp; and gas in tissues with Peptostreptococcus sp, B fragilis group and Clostridium sp. Certain predisposing conditions correlated with the following organisms: trauma with Clostridium sp; diabetes with Bacteroides sp, Enterobacteriaceae, and S aureus; and burn with Pseudomonas aeruginosa. Conclusion: These data highlight the polymicrobial nature of cellulitis. C1 USN HOSP,DEPT PEDIAT,BETHESDA,MD. USN HOSP,DEPT INFECT DIS,BETHESDA,MD. NR 25 TC 53 Z9 54 U1 1 U2 5 PU AMER MEDICAL ASSOC PI CHICAGO PA 515 N STATE ST, CHICAGO, IL 60610 SN 0004-0010 J9 ARCH SURG-CHICAGO JI Arch. Surg. PD JUL PY 1995 VL 130 IS 7 BP 786 EP 792 PG 7 WC Surgery SC Surgery GA RK168 UT WOS:A1995RK16800023 PM 7611872 ER PT J AU MAGNUS, RH NABY, E AF MAGNUS, RH NABY, E TI AFGHANISTAN AND CENTRAL-ASIA - MIRRORS AND MODELS SO ASIAN SURVEY LA English DT Article C1 HARVARD UNIV,CTR MIDDLE EASTERN STUDIES,CAMBRIDGE,MA 02138. RP MAGNUS, RH (reprint author), USN,POSTGRAD SCH,DEPT NATL SECUR AFFAIRS,MONTEREY,CA 93940, USA. NR 14 TC 0 Z9 0 U1 0 U2 1 PU UNIV CALIF PRESS PI BERKELEY PA JOURNALS DEPT 2120 BERKELEY WAY, BERKELEY, CA 94720 SN 0004-4687 J9 ASIAN SURV JI Asian Surv. PD JUL PY 1995 VL 35 IS 7 BP 605 EP 620 DI 10.1525/as.1995.35.7.01p0034v PG 16 WC Area Studies SC Area Studies GA RT189 UT WOS:A1995RT18900001 ER PT J AU WALTMAN, EB GHIGO, FD JOHNSTON, KJ FOSTER, RS FIELDER, RL SPENCER, JH AF WALTMAN, EB GHIGO, FD JOHNSTON, KJ FOSTER, RS FIELDER, RL SPENCER, JH TI THE EVOLUTION OF OUTBURSTS IN CYGNUS-X-3 AT 2.25 AND 8.3 GHZ SO ASTRONOMICAL JOURNAL LA English DT Article ID RADIO OUTBURSTS; EMISSION C1 NATL RADIO ASTRON OBSERV,GREEN BANK,WV 24944. USN OBSERV,WASHINGTON,DC 20392. RP WALTMAN, EB (reprint author), USN,RES LAB,DIV REMOTE SENSING,CODE 7210,WASHINGTON,DC 20375, USA. NR 21 TC 46 Z9 46 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0004-6256 J9 ASTRON J JI Astron. J. PD JUL PY 1995 VL 110 IS 1 BP 290 EP 299 DI 10.1086/117518 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA RE741 UT WOS:A1995RE74100026 ER PT J AU HUMMEL, CA ARMSTRONG, JT BUSCHER, DF MOZURKEWICH, D QUIRRENBACH, A VIVEKANAND, M AF HUMMEL, CA ARMSTRONG, JT BUSCHER, DF MOZURKEWICH, D QUIRRENBACH, A VIVEKANAND, M TI ORBITS OF SMALL ANGULAR SCALE BINARIES RESOLVED WITH THE MARK-III INTERFEROMETER SO ASTRONOMICAL JOURNAL LA English DT Article ID M-CIRCLE-DOT; OPTICAL INTERFEROMETRY; STELLAR MODELS; STARS; MASSES; GRIDS C1 USN OBSERV,NRL,USNO,OPT INTERFEROMETER PROJECT,WASHINGTON,DC 20392. NR 42 TC 59 Z9 60 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0004-6256 J9 ASTRON J JI Astron. J. PD JUL PY 1995 VL 110 IS 1 BP 376 EP 390 DI 10.1086/117528 PG 15 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA RE741 UT WOS:A1995RE74100036 ER PT J AU DERMER, CD GEHRELS, N AF DERMER, CD GEHRELS, N TI 2 CLASSES OF GAMMA-RAY EMITTING ACTIVE GALACTIC NUCLEI SO ASTROPHYSICAL JOURNAL LA English DT Review DE GALAXIES, ACTIVE; GALAXIES, JETS; GALAXIES, NUCLEI; GALAXIES, SEYFERT GAMMA; RAYS, OBSERVATIONS ID LACERTAE OBJECT MARKARIAN-421; EXTRAGALACTIC RADIO-SOURCES; CENTAURUS-A; EGRET TELESCOPE; SEYFERT-GALAXIES; COMPTON REFLECTION; NONTHERMAL SOURCES; SIGMA-OBSERVATION; X-RAYS; EMISSION AB We interpret recent gamma-ray observations of active galactic nuclei (AGNs) made with the Whipple Observatory, Granat and especially the Compton Gamma Ray Observatory. The gamma-ray data show that there are two distinct classes of AGNs defined by their redshift and luminosity distributions and high-energy spectral properties. Sources in the first class, which are generally associated with AGNs classified in other wavelength ranges as Seyferts, have redshifts z less than or similar to 0.06 and 50-150 keV luminosities in the range 10(41)-10(44) ergs s(-1). These sources display spectral softenings at similar to 100 keV energies, with no measured emission at photon energies E > several MeV. This class includes radio-quiet AGNs in addition to radio galaxies apparently viewed at large angles with respect to the radio jet axis. The redshifts of objects in the second class, which are associated with AGNs classified as blazars, are as large as z congruent to 2.3, and the range of 100 MeV-5 GeV luminosities, assuming isotropic emission, extends to 10(49) ergs s(-1). The approximate to 20 MeV-30 GeV gamma-ray luminosity often dominates the bolometric luminosity in objects of this class. These sources probably represent AGNs that are observed nearly along the axis of a radio jet. Some AGNs show evidence from the high-energy data for transitional behavior between the two classes. We consider whether the qualitatively different properties of the two gamma-ray classes provide evidence for quasi-isotropic emission from the Seyferts and beamed emission from the blazars. Comparison of the observed redshift and luminosity distributions with model distributions derived from a treatment of the cosmological statistics of isotropic and beamed sources gives, however, inconclusive results. We treat gamma-ray transparency arguments for beaming, avoiding earlier unproven assumptions that X-rays and E > 100 MeV gamma rays originate from the same site. The pair-production optical depth of E > 100 MeV gamma rays interacting with other gamma rays is much less than 1 and does not require beaming, but data from OSSE give evidence for beaming in a few blazars. We generalize to the gamma-ray regime the Elliot-Shapiro relation, which is based on the assumption that AGN radiation is isotropically emitted and that the luminosity is generated by Eddington-limited accretion. Available gamma-ray data do not yet demonstrate a strong conflict with this limit. The generalization of the Eddington-luminosity limit to the Klein-Nishina limit suggests, however, a new type of object that can accrete at luminosities much greater than 10(46) M(8) ergs s(-1) by radiating photons at gamma-ray energies. Here M(8), is the black hole mass in units of 10(8) M(.). Beaming arguments from gamma-ray observations require more observations of blazars, but superluminal observations probably still provide the most compelling evidence for bulk relativistic motion in blazars. C1 NASA, GODDARD SPACE FLIGHT CTR, HIGH ENERGY ASTROPHYS LAB, GREENBELT, MD 20771 USA. RP USN, RES LAB, EO HULBURT CTR SPACE RES, CODE 7653, WASHINGTON, DC 20375 USA. RI Gehrels, Neil/D-2971-2012 NR 172 TC 101 Z9 104 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X EI 1538-4357 J9 ASTROPHYS J JI Astrophys. J. PD JUL 1 PY 1995 VL 447 IS 1 BP 103 EP 120 DI 10.1086/175859 PN 1 PG 18 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA RF079 UT WOS:A1995RF07900009 ER PT J AU SHENDER, BS KAUFMAN, JW ILMARINEN, R AF SHENDER, BS KAUFMAN, JW ILMARINEN, R TI COLD-WATER IMMERSION SIMULATIONS USING THE WISSLER-TEXAS-THERMAL-MODEL - VALIDATION AND SENSITIVITY ANALYSIS SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Note AB Background: Wissler's Texas Thermal Model (TM) has been used to simulate the effects of thermal stresses on individuals under a variety of conditions. As part of a U.S. Navy effort to develop integrated protection garments, TM was modified to predict tolerance to cold water immersion (CWI) with garments with do Values less than 0.1 (15). Methods: With these modifications, TM predictions were validated using experimental data obtained from 39 males and females during anti-exposure suit CWI assessments. Data analyses were based on changes in rectal (Tre) and various skin temperatures (Tsk). A sensitivity analysis was also performed to determine which TM parameters were most affected during simulated CWI. The condition tested was head-out immersion in 4.4 degrees C water by a 72.6 kg man (10 mm mean skinfold thickness). Results: For most of the subject pool, the estimated change in Tre, chest, thigh, calf, and arm temperatures were not statistically different from experimental values. However, TM predictions were less accurate with respect to female responses. Based on thermal end points, TM predictions indicated that the following body segments were most sensitive to changes in insulation level (ordered from most to least important): chest and abdomen, leg, head, and arm. The physical parameters mean skinfold thickness, basal metabolic rate, body weight, and exercise metabolic rate had the most impact on TM predictions. Conclusions: The relative benefit of increased insulation on individual body segments was identified to aid garment design. Further, the relative importance of model physical parameters was identified so that judicious initial conditions could be selected to ensure that only garment design changes would be reflected in model predictions. C1 INST OCCUPAT HLTH,HELSINKI,FINLAND. RP SHENDER, BS (reprint author), USN,CTR AIR WARFARE,AIRCRAFT DIV WARMINSTER,POB 5152,CODE 4641,WARMINSTER,PA 18974, USA. NR 21 TC 2 Z9 2 U1 0 U2 1 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD JUL PY 1995 VL 66 IS 7 BP 678 EP 686 PG 9 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA RE623 UT WOS:A1995RE62300012 PM 7575319 ER PT J AU JIN, NR LUM, LG BUREN, EV LERMAN, SP WALKER, AL JUNE, CH AF JIN, NR LUM, LG BUREN, EV LERMAN, SP WALKER, AL JUNE, CH TI SIGNAL-TRANSDUCTION BY B-CELLS AND T-CELLS EARLY AFTER BONE-MARROW TRANSPLANTATION - B-CELL CALCIUM FLUX RESPONSES ARE INTACT WHEREAS LACK OF CD4 CELLS ACCOUNTS FOR IMPAIRED T-CELL RESPONSES SO BONE MARROW TRANSPLANTATION LA English DT Article DE SIGNAL TRANSDUCTION; CALCIUM FLUX RESPONSES; RESPONDING CELLS; BONE MARROW TRANSPLANTATION ID HOST-DISEASE; IMMUNOGLOBULIN-SYNTHESIS; CHRONIC GRAFT; DIFFERENTIATIVE RESPONSES; IMMUNE RECONSTITUTION; INVITRO REGULATION; RECIPIENTS; DYSFUNCTION; STIMULATION; RECOVERY AB We previously found that intracellular ionized calcium ([Ca2+]i) flux responses after anti-CDS crosslinking of CD3/TCR on T cells from allogeneic and autologous bone marrow transplant (BMT) recipients were impaired, Yamagami et al. J Clin Invest 1990; 86: 1347-1351, In contrast to the earlier study, this study focuses on identifying the T cell subset(s) responsible for the defects and determining if B cell responses are defective in BMT recipients early after BMT, In 37 recipients after anti-CD3 stimulation of PBL, a mean of 25.9% responding T cells was observed, This was significantly lower than the mean of 43.6% responding T cells in PBL from 21 normals (P < 0.001), The proportion of responding T cells in PBL (T PBL) increased in the recipients with time after BMT, By 6 months after BMT, the mean percent of responding T PBL approached the normal range, On the other hand, a mean of 8.1% responding B cells in anti-IgM crosslinked PBL from 24 recipients was not different from the mean of 7.4% responding B cells in anti-IgM crosslinked PBL from 16 normals (P = 0.6), Four color flow cytometry was used to identify subpopulations of lymphocytes. Enriched B cells were tested by gating out CD3(+) and CD56(+) cells to confirm the results of unfractionated PBL, In 8 recipients, the mean percent responding B cells was 36.6% and was not different from 6 normals (mean = 41.0%), Although the mean percent responding CD4(+) and CD8(+) cells in recipients was not different from the controls, the absolute number of responding CD4(+) cells (67/mm(3)) from 13 recipients was significantly lower than that (244/mm(3)) seen for 9 controls (P = 0.003), In contrast, the absolute numbers of responding CD8(+) cells (304/mm(3)) were not different from that (163/mm(3)) seen for the same controls (P = 0.28), The data show that impaired recipient T cell responses are due to low absolute numbers of CD4(+) cells and not due to the inability of CD4(+) cells to respond to anti-CD3 crosslinking. Signal transduction by recipient B cells was in the normal range. This strongly suggests that defective B cell functions mag be due, in part, to delayed reconstitution of CD4(+) cells after marrow transplantation. C1 WAYNE STATE UNIV,DEPT MED,DIV HEMATOL & ONCOL,BONE MARROW TRANSPLANTAT PROGRAM,DETROIT,MI 48202. WAYNE STATE UNIV,DEPT PEDIAT,DETROIT,MI 48202. WAYNE STATE UNIV,DEPT IMMUNOL,DETROIT,MI. USN,MED RES INST,BETHESDA,MD. NR 28 TC 8 Z9 8 U1 0 U2 1 PU STOCKTON PRESS PI BASINGSTOKE PA HOUNDMILLS, BASINGSTOKE, HANTS, ENGLAND RG21 2XS SN 0268-3369 J9 BONE MARROW TRANSPL JI Bone Marrow Transplant. PD JUL PY 1995 VL 16 IS 1 BP 103 EP 109 PG 7 WC Biophysics; Oncology; Hematology; Immunology; Transplantation SC Biophysics; Oncology; Hematology; Immunology; Transplantation GA RM793 UT WOS:A1995RM79300015 PM 7581108 ER PT J AU SMITH, DR BASTIAANS, LM GADOMSKI, FJ WEINBECK, RS ZEITLER, JW RAO, GV WARTHAN, HP HECKMAN, BE PAULEY, PM AF SMITH, DR BASTIAANS, LM GADOMSKI, FJ WEINBECK, RS ZEITLER, JW RAO, GV WARTHAN, HP HECKMAN, BE PAULEY, PM TI 4TH AMS SYMPOSIUM ON EDUCATION SO BULLETIN OF THE AMERICAN METEOROLOGICAL SOCIETY LA English DT Editorial Material AB The American Meteorological Society (AMS) held its Fourth Symposium on Education in conjunction with the 75th Annual Meeting in Dallas, Texas. The theme of the symposium was ''Opening the Doors to the Future: Education in the Classroom and Beyond.'' Thirty-eight oral presentations and 53 poster presentations summarized a variety of educational programs or examined issues of importance for both the precollege and university levels. There were also two joint sessions with other meetings. The K-12 education session was held as part of the 24th Conference on Broadcast Meteorology, in recognition of the contributions made by media meteorologists. The second joint session was with the 11th International Conference on Interactive Information and Processing Systems for Meteorology, Oceanography, and Hydrology on new technologies for the classroom. Over 200 people representing a wide spectrum of the Society attended one or more of the sessions in this two-day conference, where they increased their awareness of educational initiatives of members and institutions associated with the AMS. C1 NASSAU CTY COMMUNITY COLL,DEPT PHYS SCI,GARDEN CITY,NY. PENN STATE UNIV,DEPT METEOROL,UNIVERSITY PK,PA 16802. SUNY COLL BROCKPORT,DEPT EARTH SCI,BROCKPORT,NY 14420. TEXAS A&M UNIV,CTR AGR WEATHER SERV,NWS SW AGR,COLLEGE STN,TX. ST LOUIS UNIV,DEPT EARTH & ATMOSPHER SCI,ST LOUIS,MO 63103. TOWERS HIGH SCH,STONE MT,GA. UNIV CORP ATMOSPHER RES,COMET,BOULDER,CO. USN,POSTGRAD SCH,DEPT METEOROL,MONTEREY,CA 93943. RP SMITH, DR (reprint author), USN ACAD,DEPT OCEANOG,572 HOLLOWAY RD,ANNAPOLIS,MD 21402, USA. NR 1 TC 2 Z9 2 U1 1 U2 1 PU AMER METEOROLOGICAL SOC PI BOSTON PA 45 BEACON ST, BOSTON, MA 02108-3693 SN 0003-0007 J9 B AM METEOROL SOC JI Bull. Amer. Meteorol. Soc. PD JUL PY 1995 VL 76 IS 7 BP 1219 EP 1224 PG 6 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA RM117 UT WOS:A1995RM11700010 ER PT J AU NACIRI, J RUTH, J CRAWFORD, G SHASHIDHAR, R RATNA, BR AF NACIRI, J RUTH, J CRAWFORD, G SHASHIDHAR, R RATNA, BR TI NOVEL FERROELECTRIC AND ELECTROCLINIC ORGANOSILOXANE LIQUID-CRYSTALS SO CHEMISTRY OF MATERIALS LA English DT Article ID BEHAVIOR AB A new series of organosiloxane ferroelectric liquid crystalline materials have been synthesized, and their mesomorphic and physical properties have been characterized. The new series contains a siloxy chain attached to the hydrocarbon chain at the nonchiral end of the molecule. All materials show a very low melting point (<5 degrees C) and exhibit chiral smectic A (SmA) and chiral smectic C (SmC*) mesophases. The changes in the siloxy chain length strongly affect the mesomorphic behavior and electrooptic properties of these materials. Increasing the number of siloxy units in the chain increases the temperature range of the SmA phase, with a concomitment decrease in the SmA-SmC* transition temperature. The electroclinic effect in the smectic A phase is characterized by a large electroclinic coefficient (similar to 4 degrees V-1 mu m(-1) at T-T-Ac = 2 degrees C) and low switching time (<40 mu s) One of the materials shows one of the highest value of spontaneous polarization P-s ever reported in the SmC* phase for similar siloxane materials with P-s = 342 nC cm(-2) at 25 degrees C. RP NACIRI, J (reprint author), USN,RES LAB,CTR BIOMOLEC SCI & ENGN,CODE 6950,WASHINGTON,DC 20375, USA. NR 32 TC 84 Z9 84 U1 0 U2 8 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0897-4756 J9 CHEM MATER JI Chem. Mat. PD JUL PY 1995 VL 7 IS 7 BP 1397 EP 1402 DI 10.1021/cm00055a019 PG 6 WC Chemistry, Physical; Materials Science, Multidisciplinary SC Chemistry; Materials Science GA RK993 UT WOS:A1995RK99300019 ER PT J AU LEWIS, T AF LEWIS, T TI THE END OF WORK AS WE KNOW IT SO COMPUTER LA English DT Article RP LEWIS, T (reprint author), USN,POSTGRAD SCH,CODE CS,MONTEREY,CA 93943, USA. NR 0 TC 1 Z9 1 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 0018-9162 J9 COMPUTER JI Computer PD JUL PY 1995 VL 28 IS 7 BP 10 EP 11 PG 2 WC Computer Science, Hardware & Architecture; Computer Science, Software Engineering SC Computer Science GA RG242 UT WOS:A1995RG24200006 ER PT J AU PRATT, DR ZYDA, M KELLEHER, K AF PRATT, DR ZYDA, M KELLEHER, K TI VIRTUAL-REALITY - IN THE MIND OF THE BEHOLDER SO COMPUTER LA English DT Article RP PRATT, DR (reprint author), USN,POSTGRAD SCH,DEPT COMP SCI,MONTEREY,CA 93943, USA. NR 5 TC 27 Z9 27 U1 0 U2 1 PU IEEE COMPUTER SOC PI LOS ALAMITOS PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1264 SN 0018-9162 J9 COMPUTER JI Computer PD JUL PY 1995 VL 28 IS 7 BP 17 EP 19 PG 3 WC Computer Science, Hardware & Architecture; Computer Science, Software Engineering SC Computer Science GA RG242 UT WOS:A1995RG24200008 ER PT J AU LARSON, GE AF LARSON, GE TI EXPERIMENTAL SLIPS AND HUMAN ERROR - EXPLORING THE ARCHITECTURE OF VOLITION - BAARS,BJ SO CONTEMPORARY PSYCHOLOGY LA English DT Book Review RP LARSON, GE (reprint author), USN,CTR PERSONNEL RES & DEV,SAN DIEGO,CA 92152, USA. NR 5 TC 0 Z9 0 U1 0 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 1995 VL 40 IS 7 BP 649 EP 650 PG 2 WC Psychology, Multidisciplinary SC Psychology GA RG832 UT WOS:A1995RG83200011 ER PT J AU NIEHAUS, RJ AF NIEHAUS, RJ TI EVOLUTION OF THE STRATEGY AND STRUCTURE OF A HUMAN-RESOURCE PLANNING DSS APPLICATION SO DECISION SUPPORT SYSTEMS LA English DT Article; Proceedings Paper CT 2nd International-Society-for-Decision-Systems Conference (2nd ISDSS) CY JUN 22-25, 1992 CL UNIV ULM, ULM, GERMANY SP Int Soc Decis Syst HO UNIV ULM DE HUMAN RESOURCE PLANNING; DOWNSIZING; WORKFORCE PLANNING MODELS; GOAL PROGRAMMING AB A multi-year effort is described which resulted in the implementation of a series of human resource planning DSS applications in the U.S. Navy shipyard community. These applications span both corporate (integrated management of eight shipyards Navy-wide with 78,000 employees in 1986) and local (individual shipyards with 9,000 employees) perspectives. Many tough management and technical DSS implementation challenges were faced in the environment of the wide-scale reductions of the U.S. defense establishment. The paper first concentrates on the development, implementation and introduction of a DSS in a large organization that is going through a personnel downsizing process. Then, a discussion is provided of the implementation of complex human resource planning models in a DSS that can be used by a mid-level staff person. Methodological issues are discussed both in terms of the model and implementation technology. RP NIEHAUS, RJ (reprint author), USN,OFF CHIEF NAVAL OPERAT,PROGRAM MANAG BRANCH MANPOWER PERS & TRAIN INFORMAT RESOURCE MANAG,WASHINGTON,DC 20370, USA. NR 30 TC 12 Z9 12 U1 1 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0167-9236 J9 DECIS SUPPORT SYST JI Decis. Support Syst. PD JUL PY 1995 VL 14 IS 3 BP 187 EP 204 DI 10.1016/0167-9236(94)00016-L PG 18 WC Computer Science, Artificial Intelligence; Computer Science, Information Systems; Operations Research & Management Science SC Computer Science; Operations Research & Management Science GA RL796 UT WOS:A1995RL79600002 ER PT J AU SMITH, SR BRADY, JG AF SMITH, SR BRADY, JG TI STUMP THE EXPERTS SO DERMATOLOGIC SURGERY LA English DT Note RP SMITH, SR (reprint author), USN,MED CTR,DEPT DERMATOL,SAN DIEGO,CA 92134, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE PUBL CO INC PI NEW YORK PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 SN 1076-0512 J9 DERMATOL SURG JI Dermatol. Surg. PD JUL PY 1995 VL 21 IS 7 BP 581 EP 581 PG 1 WC Dermatology; Surgery SC Dermatology; Surgery GA RJ703 UT WOS:A1995RJ70300001 PM 7606366 ER PT J AU SMITH, SR BRADY, JG AF SMITH, SR BRADY, JG TI STUMP THE EXPERTS - RESOLUTION SO DERMATOLOGIC SURGERY LA English DT Note RP SMITH, SR (reprint author), USN,MED CTR,DEPT DERMATOL,SAN DIEGO,CA 92134, USA. NR 3 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE PUBL CO INC PI NEW YORK PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 SN 1076-0512 J9 DERMATOL SURG JI Dermatol. Surg. PD JUL PY 1995 VL 21 IS 7 BP 652 EP 652 PG 1 WC Dermatology; Surgery SC Dermatology; Surgery GA RJ703 UT WOS:A1995RJ70300017 ER PT J AU HARLAN, DM BARNETT, MA ABE, R PECHHOLD, K PATTERSON, NB GRAY, GS JUNE, CH AF HARLAN, DM BARNETT, MA ABE, R PECHHOLD, K PATTERSON, NB GRAY, GS JUNE, CH TI VERY-LOW-DOSE STREPTOZOTOCIN INDUCES DIABETES IN INSULIN PROMOTER-MB7-1 TRANSGENIC MICE SO DIABETES LA English DT Article ID COMPLEX CLASS-II; T-CELLS; EXPRESSION; B7; MOLECULES; TOLERANCE; COSTIMULATION; LYMPHOCYTES; INDUCTION; IMMUNITY AB Transgenic mice that express mouse B7-1 (mB7-1, recently designated CD80) on their pancreatic beta-cells maintain normal islet architecture, hare normal pancreatic insulin content, and only rarely spontaneously develop insulitis and diabetes. Nevertheless. these mice display an extreme sensitivity to streptozotocin (STZ)-induced diabetes. Female mice were administered two STZ doses intraperitoneally, 20 and 40 mg/kg body nt, each for five consecutive days. Nontransgenic but otherwise syngeneic mice responded to the STZ with a moderate diminution ill pancreatic insulin content but not with persistent glycosuria. In striking contrast, STZ administered to transgenic mice resulted in a severe diminution of pancreatic insulin content and in diabetes. Notably, the lower STZ dose resulted in diabetes only after a prolonged (26- to 100-day) latency. STZ-induced diabetes appears to be T-cell dependent, since treatment with T-cell-depleting (and in particular CD8(+) subset-depicting), antibodies ameliorated the response. Anti-mB7-1 monoclonal antibody administration also prevented STZ-induced diabetes. Thus, unmasked mB7-1 is a required component in the pathway resulting in beta-cell killing. Immunohistological analysis revealed that early after STZ administration, both mB7-1 transgenic and nontransgenic mice developed insulitis. While this insulitis resolved in the nontransgenic mice, the islet-infiltrating CD4(+) and CD8(+) T-cells in the transgenic mice were associated with complete beta-cell destruction. These data suggest that STZ-induced diabetes in mB7-1 transgenic mice is an immune-mediated process with distinct potential advantages over existing insulin-dependent diabetes models. C1 REPLIGEN CORP,CAMBRIDGE,MA 02139. RP HARLAN, DM (reprint author), USN,MED RES INST,CELL BIOL PROGRAM,8901 WISCONSIN AVE,BETHESDA,MD 20889, USA. NR 38 TC 30 Z9 30 U1 0 U2 0 PU AMER DIABETES ASSOC PI ALEXANDRIA PA 1660 DUKE ST, ALEXANDRIA, VA 22314 SN 0012-1797 J9 DIABETES JI Diabetes PD JUL PY 1995 VL 44 IS 7 BP 816 EP 823 DI 10.2337/diabetes.44.7.816 PG 8 WC Endocrinology & Metabolism SC Endocrinology & Metabolism GA RP493 UT WOS:A1995RP49300015 PM 7540575 ER PT J AU TRAHAN, RE GROSZ, FB GRIFFIN, S AF TRAHAN, RE GROSZ, FB GRIFFIN, S TI AN IMPROVED METHOD FOR DESIGN OF RECURSIVE DIGITAL-FILTERS USING OPTIMIZATION SO DIGITAL SIGNAL PROCESSING LA English DT Article AB With the increased capability of today's personal computers (PC) and software packages, it often is advantageous to formulate engineering problems in such a way as to take full advantage of these resources. In this paper a new approach to recursive filter design is presented which takes advantage of a popular spreadsheet program and a simple formulation of an optimization problem. No code must be written other than the formula definitions in a spreadsheet. Explicit derivatives are not needed and full interaction with the optimization process is possible, including graphical information. Results are given for an eighth-order filter and these are compared to previously published designs. (C) 1995 Academic Press, Inc. C1 USN,RES LAB,SYST & INSTRUMENTAT SECT,BAY ST LOUIS,MS 39529. RP TRAHAN, RE (reprint author), UNIV NEW ORLEANS,DEPT ELECT ENGN,NEW ORLEANS,LA 70148, USA. NR 10 TC 1 Z9 1 U1 1 U2 2 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 SN 1051-2004 J9 DIGIT SIGNAL PROCESS JI Digit. Signal Prog. PD JUL PY 1995 VL 5 IS 3 BP 167 EP 175 DI 10.1006/dspr.1995.1017 PG 9 WC Engineering, Electrical & Electronic SC Engineering GA RH769 UT WOS:A1995RH76900006 ER PT J AU TRAUTMAN, E TRAUTMAN, MA MOSKAL, P AF TRAUTMAN, E TRAUTMAN, MA MOSKAL, P TI PREFERRED VIEWING DISTANCES FOR HAND-HELD AND STRUCTURALLY FIXED DISPLAYS SO ERGONOMICS LA English DT Article DE VIEWING DISTANCE; RESTING POINT ACCOMMODATION ID VERTICAL GAZE DIRECTION; VISUAL FATIGUE; WORK AB This research was conducted to define viewing distance characteristics of individuals engaged in ordinary reading tasks. Specific attention was directed to assessing the potential relationship between observed distance and individual resting point accommodation. Consistent, statistically significant differences were observed across variable handheld and structurally-fixed hardcopy display configuration conditions. Relationships between observed viewing distance and resting point accommodation were not apparent. These findings suggest that simple eye-to-display viewing distance is fundamentally different for handheld text presentations and for the same text presented in a configuration similar to that of a video display terminal. C1 USN,CTR TRAINING SYST,ORLANDO,FL. UNIV S DAKOTA,VERMILLION,SD 57069. RP TRAUTMAN, E (reprint author), UNIV CENT FLORIDA,INST SIMULAT & TRAINING,ORLANDO,FL 32816, USA. NR 19 TC 4 Z9 4 U1 0 U2 0 PU TAYLOR & FRANCIS LTD LONDON PI LONDON PA ONE GUNDPOWDER SQUARE, LONDON, ENGLAND EC4A 3DE SN 0014-0139 J9 ERGONOMICS JI Ergonomics PD JUL PY 1995 VL 38 IS 7 BP 1385 EP 1394 DI 10.1080/00140139508925196 PG 10 WC Engineering, Industrial; Ergonomics; Psychology, Applied; Psychology SC Engineering; Psychology GA RF950 UT WOS:A1995RF95000007 PM 7635128 ER PT J AU GILLESPIE, DT AF GILLESPIE, DT TI INCOMPATIBILITY OF THE SCHRODINGER-EQUATION WITH LANGEVIN AND FOKKER-PLANCK EQUATIONS SO FOUNDATIONS OF PHYSICS LA English DT Article AB Quantum mechanics posits that the wave function of a one-particle system evolves with time according to the Schrodinger equation, and furthermore has a square modulus that serves as a probability density function for the position of the particle. It is natural to wonder if this stochastic characterization of the particle's position can be framed as a univariate continuous Markov process, sometimes also called a classical diffusion process, whose temporal evolution is governed by the classically transparent equations of Langevin and Fokker-Planck. It is shown here that this cannot generally be done in a consistent way, despite recent suggestions to the contrary. RP GILLESPIE, DT (reprint author), USN,CTR AIR WARFARE,DIV RES & TECHNOL,CHINA LAKE,CA 93555, USA. NR 10 TC 5 Z9 5 U1 1 U2 4 PU PLENUM PUBL CORP PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 SN 0015-9018 J9 FOUND PHYS JI Found. Phys. PD JUL PY 1995 VL 25 IS 7 BP 1041 EP 1053 DI 10.1007/BF02059525 PG 13 WC Physics, Multidisciplinary SC Physics GA RV720 UT WOS:A1995RV72000004 ER PT J AU CHEN, J SLINKER, S FEDDER, JA LYON, JG AF CHEN, J SLINKER, S FEDDER, JA LYON, JG TI SIMULATION OF GEOMAGNETIC STORMS DURING THE PASSAGE OF MAGNETIC CLOUDS SO GEOPHYSICAL RESEARCH LETTERS LA English DT Article ID FIELDS AB The response of the Earth's magnetosphere to the passage of interplanetary magnetic clouds is simulated using a three-dimensional magnetohydrodynamic (MHD) model. The input solar wind condition is give? by the magnetic field, particle density, and plasma flow calculated from a model magnetic cloud. The cross-polar potential (Phi(p)), Joule heating and electron energy precipitation into the polar cap are calculated. Synthetic magnetic indices D-st* and AE* are defined to serve as surrogates for the usual D-st and AE indices, respectively. We demonstrate that Phi(p)(2) provides a good predictor of the energy deposition into the ionosphere during storm conditions and that D-st* and AE* behave qualitatively similarly to D-st and AE. C1 DARTMOUTH COLL,DEPT PHYS & ASTRON,HANOVER,NH 03755. RP CHEN, J (reprint author), USN,RES LAB,CODE 6790,WASHINGTON,DC 20375, USA. NR 21 TC 10 Z9 10 U1 0 U2 0 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0094-8276 J9 GEOPHYS RES LETT JI Geophys. Res. Lett. PD JUL 1 PY 1995 VL 22 IS 13 BP 1749 EP 1752 DI 10.1029/95GL01520 PG 4 WC Geosciences, Multidisciplinary SC Geology GA RK059 UT WOS:A1995RK05900029 ER PT J AU BOLTON, SJ FOSTER, RS WALTMAN, WB AF BOLTON, SJ FOSTER, RS WALTMAN, WB TI OBSERVATIONS OF JUPITER SYNCHROTRON-RADIATION AT 18 CM DURING THE COMET SHOEMAKER-LEVY/9 IMPACTS SO GEOPHYSICAL RESEARCH LETTERS LA English DT Article AB The results of observations of Jupiter's synchrotron radiation during the period surrounding the impacts of comet Shoemaker-Levy/9 are reported. The observations were made at the Naval Research Laboratory's Maryland Point Observatory 85 foot radio antenna operating at 1665 MHz (18 cm). The data indicate that an increase in the intensity of the synchrotron emission of 23% took place over the full duration of the impact period. The increase was accompanied by two characteristic changes in the beaming curve: a flattening and the creation of brightness temperature variations on hourly timescales. We interpret the latter as longitudinal variations in the beaming curve which suggests a localized mechanism resulting in a redistribution of the radiating electrons in the Jovian radiation belts. C1 USN,RES LAB,DIV REMOTE SENSING,WASHINGTON,DC 20375. RP BOLTON, SJ (reprint author), CALTECH,JET PROP LAB,DIV EARTH & SPACE SCI,M-S 264-744,PASADENA,CA 91109, USA. NR 16 TC 19 Z9 19 U1 0 U2 0 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0094-8276 J9 GEOPHYS RES LETT JI Geophys. Res. Lett. PD JUL 1 PY 1995 VL 22 IS 13 BP 1801 EP 1804 DI 10.1029/95GL01516 PG 4 WC Geosciences, Multidisciplinary SC Geology GA RK059 UT WOS:A1995RK05900042 ER PT J AU MCLAUGHLIN, DJ ALLAN, N TWAROG, EM TRIZNA, DB AF MCLAUGHLIN, DJ ALLAN, N TWAROG, EM TRIZNA, DB TI HIGH-RESOLUTION POLARIMETRIC RADAR SCATTERING MEASUREMENTS OF LOW GRAZING ANGLE SEA CLUTTER SO IEEE JOURNAL OF OCEANIC ENGINEERING LA English DT Article ID MODEL AB This paper presents fully polarimetric radar scattering measurements of low grazing angle sea clutter. The measurements were obtained at a three degree grazing angle using a high range resolution (1.5 m) X-Band polarimetric radar operated from a shore site overlooking the Chesapeake Bay. The radar employs pulse-to-pulse switching between orthogonal transmitted polarizations and simultaneously measures two orthogonally polarized components of the backscattered wave to obtain full polarimetric information about the scattering process. The complete Stokes matrix, computed by averaging successive realizations of the polarization scattering matrix. Is used to obtain polarization signatures and to determine the polarization dependence of the clutter. Sea spike echoes are shown to be weakly polarized and to exhibit polarization signatures indicative of multiple independent scattering mechanisms. Clutter echoes in the absence of sea spikes are shown to be highly polarized and to exhibit polarization signatures indicative of a single dominant scattering mechanism. C1 SACHS FREEMAN ASSOCIATES INC,LANDOVER,MD 20785. USN,RES LAB,DIV RADAR,WASHINGTON,DC. RP MCLAUGHLIN, DJ (reprint author), NORTHEASTERN UNIV,DEPT ELECT & COMP ENGN,BOSTON,MA 02115, USA. NR 29 TC 23 Z9 24 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 0364-9059 J9 IEEE J OCEANIC ENG JI IEEE J. Ocean. Eng. PD JUL PY 1995 VL 20 IS 3 BP 166 EP 178 DI 10.1109/48.393072 PG 13 WC Engineering, Civil; Engineering, Ocean; Engineering, Electrical & Electronic; Oceanography SC Engineering; Oceanography GA RG936 UT WOS:A1995RG93600002 ER PT J AU KUO, EYT AF KUO, EYT TI JOINT PERTURBATION SCATTERING CHARACTERIZATION OF A LITTORAL OCEAN-BOTTOM REVERBERATION - THEORY, SCATTERING STRENGTH PREDICTIONS, AND DATA COMPARISONS SO IEEE JOURNAL OF OCEANIC ENGINEERING LA English DT Article ID BACKSCATTER; REFLECTION; MODEL AB A joint surface roughness/volumetric perturbation scattering theory is utilized to characterize the reverberation from a littoral ocean bottom. The result is a reflected held spectrum that consists of specular and off-specular components. The predicted scattering strength from the off-specular component is shown to be comprised of interface roughness scattering, sediment inhomogeneity volumetric scattering, and interface roughness/sediment inhomogeneity correlation scattering. The sediment inhomogeneity volumetric scattering is shown to contain two contributions that are due to fractional variations in sediment densities and sound velocities. Both contributions are shown to be affected by the interface effect by a round-trip transmission coefficient factor. These two fractional variations are shown to contribute differently to scattering strength but similarly to backscattering strength. Inversely predicted roughness spectra from various sets of backscattering strength data are shown to be consistent with a generally known roughness spectrum. Both inversely predicted roughness and volumetric scattering physical property spectra are found to be self-consistent. However, the use of only ocean bottom backscattering strength data is found to be insufficient to judge whether the roughness or the volumetric scattering dominates. Reverberation characterizations using bistatic scattering strength data and signal spread data are planned for future studies. RP KUO, EYT (reprint author), USN,UNDERSEA WARFARE CTR DETACHMENT,NEW LONDON,CT 06320, USA. NR 13 TC 4 Z9 4 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 0364-9059 J9 IEEE J OCEANIC ENG JI IEEE J. Ocean. Eng. PD JUL PY 1995 VL 20 IS 3 BP 198 EP 210 DI 10.1109/48.393075 PG 13 WC Engineering, Civil; Engineering, Ocean; Engineering, Electrical & Electronic; Oceanography SC Engineering; Oceanography GA RG936 UT WOS:A1995RG93600005 ER PT J AU WATSON, GA BLAIR, WD AF WATSON, GA BLAIR, WD TI INTERACTING ACCELERATION COMPENSATION ALGORITHM FOR TRACKING MANEUVERING TARGETS SO IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS LA English DT Letter ID INPUT ESTIMATION AB The two-stage Kalman estimator has been studied for state estimation in the presence of random bias and applied to the tracking of maneuvering targets by treating the target acceleration as a bias vector. Since the target acceleration is considered a bias, the first stage contains a constant velocity motion model and estimates the target position and velocity, while the second stage estimates the target acceleration. When a maneuver is detected, the acceleration estimate is used to correct the estimates of the first stage. The Interacting Acceleration Compensation (IAC) algorithm is proposed to overcome the requirement of explicit maneuver detection of the two-stage estimator. The IAC algorithm is viewed as a two-stage estimator having two acceleration models: the zero acceleration of the constant velocity model and a constant acceleration model. The Interacting Multiple Model (IMM) algorithm is used to compute the acceleration estimates that compensate the estimate of the constant velocity filter Simulation results indicate the tracking performance of the IAC algorithm approaches that of a comparative IMM algorithm while requiring approximately 50% of the computations. RP WATSON, GA (reprint author), USN,CTR SURFACE WARFARE,DAHLGREN DIV,DEPT SYST RES & TECHNOL,DAHLGREN,VA 22448, USA. NR 19 TC 9 Z9 9 U1 3 U2 3 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9251 J9 IEEE T AERO ELEC SYS JI IEEE Trans. Aerosp. Electron. Syst. PD JUL PY 1995 VL 31 IS 3 BP 1152 EP 1159 DI 10.1109/7.395225 PG 8 WC Engineering, Aerospace; Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA RJ728 UT WOS:A1995RJ72800027 ER PT J AU STEINER, M AF STEINER, M TI THE EFFECT OF THE CLUTTER-TO-NOISE RATIO ON DOPPLER FILTER PERFORMANCE SO IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS LA English DT Letter AB The effect of the clutter-to-noise ratio on the performance of a Doppler filter is considered. Clutter is assumed to have a power level which is unknown and varies in range. The assessment of the performance of a Doppler filter is based on the gain of the filter, which is the normalized output signal-to-interference ratio improvement at a given Doppler. The gain is generally a complex function of the statistics of the clutter. New upper and lower bounds on the gain differential between the expected design point clutter-to-noise ratio and the actual clutter-to-noise ratio are found. These bounds are independent of the clutter covariance matrix and are only a function of the unknown clutter-to-noise ratio. The bounds are valid for both Gaussian and non-Gaussian noise and for arbitrary linear filters. The upper and lower bounds differ by the theoretical coherent integration gain, 10logN dB, where N is the number of pulses. A tighter lower bound is found for the case when the filters are matched filters. A simple exact expression is found for matched filters assuming a Gaussian Markov clutter model as the clutter spectral width approaches zero. An easily implementable adaptive procedure is given which improves performance due to the unknown clutter-to-noise ratio. This work extends a previous result, valid for the Emerson filter, that shows the effect of clutter-to-noise ratio on performance in term of an average quantity, the improvement factor. RP USN, RES LAB, CODE 5341, WASHINGTON, DC 20375 USA. OI Steiner, Michael/0000-0003-3199-0935 NR 13 TC 0 Z9 0 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA SN 0018-9251 EI 1557-9603 J9 IEEE T AERO ELEC SYS JI IEEE Trans. Aerosp. Electron. Syst. PD JUL PY 1995 VL 31 IS 3 BP 1177 EP 1186 DI 10.1109/7.395221 PG 10 WC Engineering, Aerospace; Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA RJ728 UT WOS:A1995RJ72800032 ER PT J AU KANG, W AF KANG, W TI NONLINEAR H-INFINITY CONTROL AND ITS APPLICATION TO RIGID SPACECRAFT SO IEEE TRANSACTIONS ON AUTOMATIC CONTROL LA English DT Note ID ATTITUDE-CONTROL; MOMENTUM MANAGEMENT; FEEDBACK; STATION; STABILIZATION; SYSTEMS AB The problem of H-infinity control of a rigid spacecraft with three control torques and disturbances is addressed. The Hamilton-Jacobi-Isaacs inequality for H-infinity feedback design is solved. An H-infinity suboptimal feedback is given, and the stability properties of the closed-loop system are studied. RP KANG, W (reprint author), USN,POSTGRAD SCH,DEPT MATH,MONTEREY,CA 93943, USA. NR 15 TC 83 Z9 90 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 0018-9286 J9 IEEE T AUTOMAT CONTR JI IEEE Trans. Autom. Control PD JUL PY 1995 VL 40 IS 7 BP 1281 EP 1285 DI 10.1109/9.400476 PG 5 WC Automation & Control Systems; Engineering, Electrical & Electronic SC Automation & Control Systems; Engineering GA RH925 UT WOS:A1995RH92500020 ER PT J AU GERLACH, K AF GERLACH, K TI ASYMPTOTIC S/N RESULTS FOR AN ADAPTIVE POLYSPECTRAL CANCELER USING SAMPLE MATRIX-INVERSION SO IEEE TRANSACTIONS ON SIGNAL PROCESSING LA English DT Article ID CONVERGENCE PROPERTIES; GRAM-SCHMIDT; ALGORITHMS AB An adaptive polyspectral canceller configuration is defined, whereby auxiliary canceller channels are formed using distinct monomial expressions of the auxiliary sensor channels, If noises in the auxiliary canceller channels are correlated with the noise in a main channel, then improvement in output signal-to-noise (S/N) power ratio is possible by cancelling in linear fashion the correlated auxiliary canceller channels with the main channel. The convergence performance of the polyspectral canceller is analyzed, A simple expression is derived for the asymptotic S/N efficiency of the adaptive polyspectral canceller as a function of the number of independent input sample vectors used to calculate the adaptive canceller weights and other canceller/noise model parameters, It is shown by simulation for low-order polyspectral cancellers of a specific form with Gaussian inputs that this asymptotic expression is a good approximation of the actual S/N efficiency for a moderate number of input sample vectors, However, for moderate-to-high order polyspectral cancellers, the asymptotic expression is a poor indicator of performance. RP GERLACH, K (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 11 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 1053-587X J9 IEEE T SIGNAL PROCES JI IEEE Trans. Signal Process. PD JUL PY 1995 VL 43 IS 7 BP 1613 EP 1619 DI 10.1109/78.398722 PG 7 WC Engineering, Electrical & Electronic SC Engineering GA RJ144 UT WOS:A1995RJ14400006 ER PT J AU BOISE, LH MINN, AJ NOEL, PJ JUNE, CH ACCAVITTI, MA LINDSTEN, T THOMPSON, CB AF BOISE, LH MINN, AJ NOEL, PJ JUNE, CH ACCAVITTI, MA LINDSTEN, T THOMPSON, CB TI CD28 COSTIMULATION CAN PROMOTE T-CELL SURVIVAL BY ENHANCING THE EXPRESSION OF BCL-X(L) SO IMMUNITY LA English DT Article ID HUMAN PERIPHERAL-BLOOD; ACTIVATION PATHWAY; GENE-EXPRESSION; MESSENGER-RNA; FAS ANTIGEN; DEATH; BCL-2; APOPTOSIS; INTERLEUKIN-2; PROTEIN AB T cell activation through the TCR can result in either cell proliferation or cell death. The role of costimulatory receptors in regulating T cell survival has not been defined. Here, we present data demonstrating that CD28 costimulation enhances the in vitro survival of activated T cells. One mechanism for this enhancement is the ability of CD28 costimulation to augment the production of IL-2, which acts as an extrinsic survival factor for T cells. In addition, CD28 costimulation augments the intrinsic ability of T cells to resist apoptosis. Although CD28 signal transduction had no effect on Bcl-2 expression, CD28 costimulation was found to augment the expression of Bcl-x(L) substantially. Transfection experiments demonstrated that this level of Bcl-x(L) could prevent T cell death in response to TCR cross-linking, Fas cross-linking, or IL-2 withdrawal. These data suggest that an important role of CD28 costimulation is to augment T cell survival during antigen activation. C1 UNIV CHICAGO,DEPT MED,CHICAGO,IL 60637. UNIV CHICAGO,COMM IMMUNOL,CHICAGO,IL 60637. UNIV CHICAGO,HOWARD HUGHES MED INST,CHICAGO,IL 60637. USN,MED RES INST,IMMUNOL CELL BIOL PROGRAM,BETHESDA,MD 20889. UNIV ALABAMA,DEPT MED,BIRMINGHAM,AL 35294. RP BOISE, LH (reprint author), UNIV CHICAGO,GWEN KNAPP CTR LUPUS & IMMUNOL RES,CHICAGO,IL 60637, USA. FU NIAID NIH HHS [P01 AI35294] NR 40 TC 962 Z9 974 U1 3 U2 11 PU CELL PRESS PI CAMBRIDGE PA 50 CHURCH ST CIRCULATION DEPT, CAMBRIDGE, MA 02138 SN 1074-7613 J9 IMMUNITY JI Immunity PD JUL PY 1995 VL 3 IS 1 BP 87 EP 98 DI 10.1016/1074-7613(95)90161-2 PG 12 WC Immunology SC Immunology GA RK868 UT WOS:A1995RK86800010 PM 7621080 ER PT J AU GRANDZOL, JR TRAAEN, T AF GRANDZOL, JR TRAAEN, T TI USING MATHEMATICAL-PROGRAMMING TO HELP SUPERVISORS BALANCE WORKLOADS SO INTERFACES LA English DT Article AB As resources in the Department of Defense shrink, the Naval Aviation Supply Office must reduce the size of its organization, balancing work assignments fairly as it does. Having recently converted to Deming's TQM principles, management assembled an employee involvement: group to develop appropriate criteria for assigning work. Our introduction of management science techniques enabled this group to pursue its objectives. Using participative processes throughout, we applied mixed-integer programming to produce a model for repetitive use that all the participants own and understand. We utilized this model several times to mix types of work so that all participating employees received at least, and no more than, their fair shares. C1 USN,AVIAT SUPPL OFF,WASHINGTON,DC. NR 4 TC 2 Z9 2 U1 0 U2 0 PU INST MANAGEMENT SCI PI PROVIDENCE PA 290 WESTMINISTER ST, PROVIDENCE, RI 02903 SN 0092-2102 J9 INTERFACES JI Interfaces PD JUL-AUG PY 1995 VL 25 IS 4 BP 92 EP 103 DI 10.1287/inte.25.4.92 PG 12 WC Management; Operations Research & Management Science SC Business & Economics; Operations Research & Management Science GA RQ301 UT WOS:A1995RQ30100008 ER PT J AU KARLE, IL RANGANATHAN, D AF KARLE, IL RANGANATHAN, D TI THE DELINEATION OF HYDROGEN-BONDING PATTERNS IN SUPRAMOLECULAR SELF-ASSEMBLY OF SEVERAL CORE OXALO RETRO-PEPTIDES AND CRYSTAL-STRUCTURE OF MEO-SER-LEU-COCO-EEU-SER-OME SO INTERNATIONAL JOURNAL OF PEPTIDE AND PROTEIN RESEARCH LA English DT Article DE C-5-TYPE HYDROGEN BONDING; HYDROGEN-BONDED SHEETS; HELICES AND RIBBONS; X-RAY DIFFRACTION ID MOLECULAR RECOGNITION; CHEMISTRY; DESIGN; MODEL AB Pseudo-C-5-type intramolecular hydrogen bonding, arising from the C-2 disposition of the core NH-CO-CO-NH unit in oxalo retro-peptides, is formed in addition to extended hydrogen bonding with neighbors forming sheets in MeO-Aib-COCO-Aib-OMe (1), helices in MeO-Leu-COCO-Leu-OMe (2) and ribbons in MeO-Ser-Leu-COCO-Leu-Ser-OMe (3). In 3 the OH in the Ser side-chains form hydrogen bonds with the backbone carbonyl of Leu groups from neighboring molecules. Crystal parameters for 3 are: C22H38N4O10, monoclinic, space group P2(1), a = 7.374(1), b = 18.218(4), c = 10.661(3) Angstrom, beta = 95.72(2)degrees, R = 0.063 for 1738 observed reflections with \F-0\>3 sigma(F). (C) Munksgaard 1995. C1 CSIR,REG RES LAB,BIOMOLEC RES UNIT,TRIVANDRUM 695019,KERALA,INDIA. RP KARLE, IL (reprint author), USN,RES LAB,STRUCT MATTER LAB,WASHINGTON,DC 20375, USA. RI TVM, NIIST/E-5132-2012 OI TVM, NIIST/0000-0002-5814-466X FU NIGMS NIH HHS [GM30902] NR 18 TC 13 Z9 13 U1 0 U2 1 PU MUNKSGAARD INT PUBL LTD PI COPENHAGEN PA 35 NORRE SOGADE, PO BOX 2148, DK-1016 COPENHAGEN, DENMARK SN 0367-8377 J9 INT J PEPT PROT RES JI Int. J. Pept. Protein Res. PD JUL PY 1995 VL 46 IS 1 BP 18 EP 23 PG 6 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA RG751 UT WOS:A1995RG75100003 PM 7558592 ER PT J AU KARLE, I RANGANATHAN, D AF KARLE, I RANGANATHAN, D TI POLYMETHYLENE SPACER LINKED BIS(ALA) PEPTIDES FORM MODIFIED BETA-SHEET STRUCTURES - CRYSTAL-STRUCTURE AND SELF-ASSEMBLY PATTERN OF ADIPOYL AND SUBEROYL ANALOGS SO INTERNATIONAL JOURNAL OF PEPTIDE AND PROTEIN RESEARCH LA English DT Article DE EXTENDED BACKBONE; MEO-L-ALA-CO-(CH2)(4)-CO-L-ALA-OME; MEO-L-ALA-CO-(CH2)(6)-CO-L-ALA-OME; RETROPEPTIDE, X-RAY DIFFRACTION ID MOLECULAR-SOLIDS; PROTEIN DESIGN AB The adipoyl- and suberoyl-linked bis(Ala) peptides have an extended backbone between the two C-alpha atoms in each molecule. They self-assemble, through intermolecular hydrogen bonds and stacking of parallel strands, into highly ordered modified beta-sheet-like structures. Crystal data for adipoyl bis(Ala)diester are as follows: C14H24N2O6, monoclinic space group P2(1), a = 4.900(1), b = 29.093(10), c = 6.021(2) Angstrom, beta = 104.20(2)degrees, R = 0.053 for 1100 data > 3 sigma(F); for suberoyl bis(Ala)diester: C16H28N2O6, monoclinic space group P2(1), a = 4.887(2), b = 32.650(9), c = 6.004(2) Angstrom, beta = 103.79(3), R = 0.070 for 1065 data > 3 sigma(F). (C) Munksgaard 1995. C1 CSIR,REG RES LAB,BIOMOLEC RES UNIT,TRIVANDRUM 695019,KERALA,INDIA. RP KARLE, I (reprint author), USN,RES LAB,STRUCT MATTER LAB,WASHINGTON,DC 20375, USA. RI TVM, NIIST/E-5132-2012 OI TVM, NIIST/0000-0002-5814-466X FU NIGMS NIH HHS [GM 30902] NR 13 TC 6 Z9 6 U1 0 U2 0 PU MUNKSGAARD INT PUBL LTD PI COPENHAGEN PA 35 NORRE SOGADE, PO BOX 2148, DK-1016 COPENHAGEN, DENMARK SN 0367-8377 J9 INT J PEPT PROT RES JI Int. J. Pept. Protein Res. PD JUL PY 1995 VL 46 IS 1 BP 24 EP 29 PG 6 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA RG751 UT WOS:A1995RG75100004 PM 7558593 ER PT J AU KARLE, IK RANGANATHAN, D AF KARLE, IK RANGANATHAN, D TI METHANOL-MEDIATED, MODULAR SELF-ASSEMBLY OF ANTIPARALLEL BETA-DIMERS - CRYSTAL-STRUCTURE OF C-ALPHA BACKBONE-MODIFIED TRIPEPTIDE BZ-AIB-NHCOCO-AIB-OME SO INTERNATIONAL JOURNAL OF PEPTIDE AND PROTEIN RESEARCH LA English DT Article DE C-5 HYDROGEN BOND; OXALYL GROUP; PLANAR MODIFIED BACKBONE; SOLVENT-MEDIATED INTERMOLECULAR STACKING; X-RAY DIFFRACTION ID PEPTIDE AB The backbone-modified tripeptide Bz-Aib-NHCOCO-Aib-OMe (1), in which the central C-alpha has been replaced with CO, self-assembles in the solid state into highly ordered two-dimensional arrays through MeOH mediated intermolecular stacking of dimeric 'disk' modules formed by an antiparallel beta-sheet-type arrangement of tripeptide molecules. The C-alpha(C'O)N(C'O)(C'O)NCalpha segment is nearly coplanar (average deviation from a mean least-square plane is +/- 0.037 Angstrom). The oxalyl moiety forms two pseudo-C-5 intramolecular hydrogen bonds. Crystal parameters are as follows: C18H23N3O6 . CH3OH, triclinic space group P ($) over bar 1, a = 9.796(4), b = 10.348(3), c = 11.836(4) Angstrom, alpha = 78.28(3), beta = 73.72(3), gamma = 69.45(3), R = 0.082 for 1747 reflections measured with \F-o\>3 sigma(F). (C) Munksgaard 1995. C1 CSIR,REG RES LAB,BIOMOLEC RES UNIT,TRIVANDRUM 695019,KERALA,INDIA. RP KARLE, IK (reprint author), USN,RES LAB,STRUCT MATTER LAB,WASHINGTON,DC 20375, USA. RI TVM, NIIST/E-5132-2012 OI TVM, NIIST/0000-0002-5814-466X FU NIGMS NIH HHS [GM-30902] NR 8 TC 6 Z9 6 U1 0 U2 1 PU MUNKSGAARD INT PUBL LTD PI COPENHAGEN PA 35 NORRE SOGADE, PO BOX 2148, DK-1016 COPENHAGEN, DENMARK SN 0367-8377 J9 INT J PEPT PROT RES JI Int. J. Pept. Protein Res. PD JUL PY 1995 VL 46 IS 1 BP 65 EP 68 PG 4 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA RG751 UT WOS:A1995RG75100009 PM 7558598 ER PT J AU STANKUS, AA XAPSOS, MA KOLANKO, CJ GERSTENBERG, HM BLAKELY, WF AF STANKUS, AA XAPSOS, MA KOLANKO, CJ GERSTENBERG, HM BLAKELY, WF TI ENERGY DEPOSITION EVENTS PRODUCED BY FISSION NEUTRONS IN AQUEOUS-SOLUTIONS OF PLASMID DNA SO INTERNATIONAL JOURNAL OF RADIATION BIOLOGY LA English DT Article ID SINGLE-STRAND BREAKS; ENHANCE NEOPLASTIC TRANSFORMATION; TUMOR-ASSOCIATED ANTIGEN; LOW-DOSE RATE; SCAVENGER CONCENTRATION; SPECTRUM NEUTRONS; MAMMALIAN-CELLS; OH RADICALS; HE-4 IONS; SV40 DNA AB Using an agarose gel electrophoresis assay, single-strand breaks (ssb) induced by fission neutrons and Co-60 gamma-rays in aerobic aqueous solutions of pBR322 plasmid DNA were studied. The energy-deposition events of the two radiations were characterized using a Rossi-type proportional counter to measure lineal-energy spectra. For neutrons, the dose-weighted lineal-energy mean, (y) over bar(D), is 63 keV mu m(-1)-about 30 times that for gamma-rays. With increasing (y) over bar(D), hydroxyl radicals produced within spurs or tracks are less likely to survive due to recombination effects, resulting in decreased ssb yields. In TE buffer solution, the ssb yield induced by gamma-rays is 3 . 2 +/- 0 . 66 times that induced by neutrons at the same dose. Since the direct radiation effect is small under these conditions, we can estimate that the previously unknown G for hydroxyl radical production by fission neutrons is 0 . 088 mu mol J(-1). For glycerol concentrations that give the solution a hydroxyl radical scavenging capacity similar to that of cellular environments, the ssb yield induced by gamma-rays is about 2 . 0 +/- 0 . 24 times that induced by neutrons. Analysis shows that this trend with added scavenger is caused primarily by hydroxyl radical yields. C1 USN,RES LAB,WASHINGTON,DC 20375. ARMED FORCES RADIOBIOL RES INST,BETHESDA,MD 20889. NR 44 TC 26 Z9 27 U1 0 U2 0 PU TAYLOR & FRANCIS LTD LONDON PI LONDON PA ONE GUNDPOWDER SQUARE, LONDON, ENGLAND EC4A 3DE SN 0955-3002 J9 INT J RADIAT BIOL JI Int. J. Radiat. Biol. PD JUL PY 1995 VL 68 IS 1 BP 1 EP 9 DI 10.1080/09553009514550851 PG 9 WC Biology; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging SC Life Sciences & Biomedicine - Other Topics; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging GA RP034 UT WOS:A1995RP03400001 PM 7629431 ER PT J AU TEMPLER, RH TURNER, DC HARPER, P SEDDON, JM AF TEMPLER, RH TURNER, DC HARPER, P SEDDON, JM TI CORRECTIONS TO SOME MODELS OF THE CURVATURE ELASTIC ENERGY OF INVERSE BICONTINUOUS CUBIC PHASES SO JOURNAL DE PHYSIQUE II LA English DT Article ID STRONGLY CURVED MONOLAYERS; SURFACTANT FILMS; NEUTRAL SURFACE; MODULI AB Recently a number of papers have appeared which have attempted to measure the curvature elastic coefficients of lipid monolayers from the structural data of inverse bicontinuous cubic phases [1-3]. It has subsequently become apparent that these efforts have been flawed in at least two ways. Firstly, errors have been made in setting physically inappropriate constraints on the differential geometry of the bicontinuous cubic phases and secondly, it has not been appreciated that in the systems which have been studied, the degree and variance of the mean and Gaussian curvature at the interface are so great that three curvature elastic coefficients are insufficient to correctly describe the bending energetics. In this paper we have re-cast and corrected the curvature elastic description used in references [1-3] and then re-analysed the experimental data with the revised theory. Of course as we have already stated these analyses are inadequate measurements of the curvature elasticity, both in terms of the model used and also because of the relative increase in the energetic contribution from packing frustration and forces acting between bilayers when the lattice parameter is relatively small. However, all is not lost and Ne show that inverse bicontinuous cubic structures do exist of sufficient size that a simple curvature elastic model may be an adequate description of the mesophase and hence allow one to measure the curvature elastic moduli. C1 USN,RES LAB,WASHINGTON,DC 20375. GRAND CANYON UNIV,DEPT PHYS,PHOENIX,AZ 85061. RP TEMPLER, RH (reprint author), UNIV LONDON IMPERIAL COLL SCI TECHNOL & MED,DEPT CHEM,LONDON SW7 2AY,ENGLAND. NR 26 TC 43 Z9 43 U1 0 U2 5 PU EDITIONS PHYSIQUE PI LES ULIS CEDEX PA Z I DE COURTABOEUF AVE 7 AV DU HOGGAR, BP 112, 91944 LES ULIS CEDEX, FRANCE SN 1155-4312 J9 J PHYS II JI J. Phys. II PD JUL PY 1995 VL 5 IS 7 BP 1053 EP 1065 PG 13 WC Mechanics; Physics, Atomic, Molecular & Chemical SC Mechanics; Physics GA RH665 UT WOS:A1995RH66500011 ER PT J AU TING, A FISCHER, R FISHER, A EVANS, K BURRIS, R KRALL, J ESAREY, E SPRANGLE, P AF TING, A FISCHER, R FISHER, A EVANS, K BURRIS, R KRALL, J ESAREY, E SPRANGLE, P TI OBSERVATION OF 20 EV X-RAY GENERATION IN A PROOF-OF-PRINCIPLE LASER SYNCHROTRON SOURCE EXPERIMENT SO JOURNAL OF APPLIED PHYSICS LA English DT Note ID RELATIVISTIC ELECTRON-BEAM; PARALLEL VELOCITY SPREAD C1 GEORGE MASON UNIV,FAIRFAX,VA 22030. RSI INC,ALEXANDRIA,VA 22314. RP TING, A (reprint author), USN,RES LAB,DIV PLASMA PHYS,BEAM PHYS BRANCH,WASHINGTON,DC 20375, USA. NR 11 TC 36 Z9 41 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 JUL 1 PY 1995 VL 78 IS 1 BP 575 EP 577 DI 10.1063/1.360644 PG 3 WC Physics, Applied SC Physics GA RE582 UT WOS:A1995RE58200086 ER PT J AU SMOOT, EC BOWEN, DG LAPPERT, P RUIZ, JA AF SMOOT, EC BOWEN, DG LAPPERT, P RUIZ, JA TI DELAYED DEVELOPMENT OF AN ECTOPIC FRONTAL-SINUS MUCOCELE AFTER PEDIATRIC CRANIAL TRAUMA SO JOURNAL OF CRANIOFACIAL SURGERY LA English DT Note DE FRONTAL SINUS; ECTOPIC; MUCOCELE ID ETHMOIDAL MUCOCELES AB We describe the delayed occurrence of a frontal sinus mucocele 14 years after the original trauma. The patient presented with a laterally displaced, enlarging mass that encroached on the dura. The sterile mucocele was removed, and the cranial defect was reconstructed with methyl methacrylate and wire mesh. Our experience confirms the known but rarely observed late development of a mucocele after pediatric facial trauma. To prevent the sequela of mucocele development, the mucosa of the rudimentary frontal sinus in the pediatric patient must be carefully sought and ablated during reconstructive procedures of the forehead when traumatic injury significantly disrupts the normal bony anatomy. C1 UNIV TENNESSEE,DEPT PEDIAT,MEMPHIS,TN. GEORGETOWN UNIV,MED CTR,DIV PLAST SURG,WASHINGTON,DC 20007. USN,DEPT MED,CHESAPEAKE,VA. PERUVIAN NAVAL FORCES,CTR MED NAVAL,DEPT CIRUGIA,LIMA,PERU. RP SMOOT, EC (reprint author), UNIV TENNESSEE,DEPT SURG,777 WASHINGTON AVE,SUITE P430,MEMPHIS,TN, USA. NR 8 TC 16 Z9 17 U1 0 U2 0 PU LITTLE BROWN CO PI BOSTON PA 34 BEACON STREET, BOSTON, MA 02108-1493 SN 1049-2275 J9 J CRANIOFAC SURG JI J. Craniofac. Surg. PD JUL PY 1995 VL 6 IS 4 BP 327 EP 331 DI 10.1097/00001665-199507000-00012 PG 5 WC Surgery SC Surgery GA RH648 UT WOS:A1995RH64800012 PM 9020708 ER PT J AU DAGGETT, DL VENINGER, A LEWIS, C BULLOCK, S KAMIN, R AF DAGGETT, DL VENINGER, A LEWIS, C BULLOCK, S KAMIN, R TI THE DEVELOPMENT OF AN AVIATION FUEL THERMAL-STABILITY TEST UNIT SO JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME LA English DT Article; Proceedings Paper CT 39th International Gas Turbine and Aeroengine Congress and Exposition CY JUN 13-16, 1994 CL THE HAGUE, NETHERLANDS AB A test unit has been developed by Rolls-Royce for the U.S. Navy to use in evaluating fuel thermal deposition typically found in various aircraft engine components. Although the current Jet Fuel Thermal Oxidation Tester (JFTOT) provides a qualitative thermal stability evaluation, it may not be able to predict in-service problems. Conditioning and testing of the fuel under realistic conditions is crucial if one is to predict deposit formations accurately. Engine fuel deposit evaluations and evidence from unpublished Rolls-Royce laboratory rig tests were used to help design a test unit that would address fuel stability problems in current or future aircraft. The Aviation Fuel Thermal Stability (AFTS) rest unit embodies test modules that were selected with extensive fuel systems experience to enable the evaluation of thermal deposition in various fuel components using properly conditioned fuel. The test modules are controlled and results are recorded by a computer. This paper includes a review of the AFTS test unit design and preliminary rest results thereof. C1 ROLLS ROYCE PLC,DERBY,ENGLAND. USN,CTR AIR WARFARE,DIV AIRCRAFT,TRENTON,NJ 08628. RP DAGGETT, DL (reprint author), ROLLS ROYCE INC,ENGN,ATLANTA,GA 30339, USA. NR 8 TC 2 Z9 2 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 JUL PY 1995 VL 117 IS 3 BP 468 EP 474 DI 10.1115/1.2814119 PG 7 WC Engineering, Mechanical SC Engineering GA RR457 UT WOS:A1995RR45700012 ER PT J AU SHEPARD, SB BOWEN, TL CHIPRICH, JM AF SHEPARD, SB BOWEN, TL CHIPRICH, JM TI DESIGN AND DEVELOPMENT OF THE WR-21 INTERCOOLED RECUPERATED (ICR) MARINE GAS-TURBINE SO JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME LA English DT Article; Proceedings Paper CT 39th International Gas Turbine and Aeroengine Congress and Exposition CY JUN 13-16, 1994 CL THE HAGUE, NETHERLANDS AB The U.S. Navy is developing an Intercooled Recuperated (ICR) marine gas turbine, designated the WR-21, for propulsion of future surface ships. The objectives of this development program and the key technical requirements are summarized. The design of the WR-21 is described in considerable detail. Meeting all the design requirements for performance, space, weight, reliability, maintainability, and life has been challenging. Numerous design tradeoffs and iterations have been performed to optimize the design within the constraints imposed in the ICR technical specification. Integration of the WR-21 engine into the DDG51 Flight IIA ship, which is the U.S. Navy's first application, has influenced the WR-21 design. This paper discusses the aspects of the DDG-51 application that were factored into the design of the ICR engine in order to reduce installation costs. C1 USN,CTR SURFACE WARFARE,ANNAPOLIS DETACHMENT,CARDEROCK DIV,ANNAPOLIS,MD 21802. WESTINGHOUSE ELECT CORP,DIV MARINE,SUNNYVALE,CA 94088. RP SHEPARD, SB (reprint author), USN,SEA SYST COMMAND,WASHINGTON,DC 20362, USA. NR 5 TC 7 Z9 7 U1 0 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 JUL PY 1995 VL 117 IS 3 BP 557 EP 562 DI 10.1115/1.2814131 PG 6 WC Engineering, Mechanical SC Engineering GA RR457 UT WOS:A1995RR45700024 ER PT J AU FISHER, S SCHULTZ, KI TAYLOR, LW AF FISHER, S SCHULTZ, KI TAYLOR, LW TI VIBRATIONS OF THE LOW-POWER ATMOSPHERIC COMPENSATION EXPERIMENT SATELLITE SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS LA English DT Article AB The Low Power Atmospheric Compensation (LACE) satellite dynamics experiment has measured vibrations of an orbiting satellite from a ground site and has observed the excitation of satellite vibrations by a sequence of boom movements. The preprogrammed boom movements were initiated by commands from a ground control site and observed by the Massachusetts Institute of Technology Lincoln Laboratory Firepond laser radar facility located in Westford, Massachusetts. In the tests, a narrow-band heterodyne CO2 laser radar, operating at a wavelength of 10.6 mu m, detected vibration-induced differential Doppler signatures of the LACE satellite. Augmentation of vibration amplitudes was achieved through timing of repeated boom movements. Evidence of open loop vibration damping by this method of repeated boom movements was also obtained, although the data were not conclusive since only a single attempt at open-loop damping was observed. The tests have demonstrated the feasibility and advantages of using relatively low cost ground-based observation techniques for vibration measurements and health monitoring of orbiting structures and for improving the accuracy of mathematical models for the structural dynamics of light, flexible space structures. C1 MIT,LINCOLN LAB,DEPT AIR DEF TECHNOL,LEXINGTON,MA 02173. NASA,LANGLEY RES CTR,SPACECRAFT CONTROL BRANCH,HAMPTON,VA 23681. RP FISHER, S (reprint author), USN,RES LAB,DEPT SPACECRAFT ENGN,WASHINGTON,DC 20375, USA. NR 14 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 0731-5090 J9 J GUID CONTROL DYNAM JI J. Guid. Control Dyn. PD JUL-AUG PY 1995 VL 18 IS 4 BP 650 EP 656 DI 10.2514/3.21443 PG 7 WC Engineering, Aerospace; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA RP557 UT WOS:A1995RP55700002 ER PT J AU HEALY, LM AF HEALY, LM TI CLOSE CONJUNCTION DETECTION ON PARALLEL COMPUTER SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS LA English DT Article ID SATELLITE AB Close conjunction detection is the task of finding which satellites will come within a given distance of other satellites. The algorithms described here are implemented on the Connection Machine (CM) in a program called CM-COMBO. It will find close conjunctions of satellites over a time range for one, a few, or all satellites against the original or another catalog and works with an arbitrary propagator. The problem of comparing an entire catalog against itself is beyond the computing power of current serial machines. This program does not prefilter any orbits and does not make any assumptions about the type of orbit (that it be nearly circular, for instance), This paper describes the algorithm for this computation, the implementation on the CM, and results of several studies using this program. RP HEALY, LM (reprint author), USN,RES LAB,NAVAL CTR SPACE TECHNOL,ORBIT DYNAM SECT,WASHINGTON,DC 20375, USA. NR 9 TC 5 Z9 5 U1 1 U2 1 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0731-5090 J9 J GUID CONTROL DYNAM JI J. Guid. Control Dyn. PD JUL-AUG PY 1995 VL 18 IS 4 BP 824 EP 829 DI 10.2514/3.21465 PG 6 WC Engineering, Aerospace; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA RP557 UT WOS:A1995RP55700024 ER PT J AU CLIFTON, JM SCHMIDT, LV STUART, TD AF CLIFTON, JM SCHMIDT, LV STUART, TD TI DYNAMIC MODELING OF A TRAILING WIRE TOWED BY AN ORBITING AIRCRAFT SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS LA English DT Article AB A numerical model treating the dynamics of a long trailing wire towed by an orbiting aircraft is described. The dynamics are based on the superposition of a ''dangling chain'' model upon the steady-state, no-wind wire equilibrium position. Excitation is due to the wind's nonuniform vertical profile causing a once-per-orbit cycle harmonic aerodynamic input. The model was validated both by analytic methods and by comparison with experimental data. C1 USN,CTR AIR WARFARE,DIV FORCE WARFARE,PATUXENT RIVER,MD 20670. USN,POSTGRAD SCH,DEPT AERONAUT & ASTRONAUT,MONTEREY,CA 93943. USN,ARLINGTON,VA 22202. RP CLIFTON, JM (reprint author), USN,CTR AIR WARFARE,DIV AIRCRAFT,PATUXENT RIVER,MD 20670, USA. NR 12 TC 15 Z9 16 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 1995 VL 18 IS 4 BP 875 EP 881 DI 10.2514/3.21472 PG 7 WC Engineering, Aerospace; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA RP557 UT WOS:A1995RP55700031 ER PT J AU ROSS, IM ALFRIEND, KT AF ROSS, IM ALFRIEND, KT TI LOW-EARTH-ORBIT MAINTENANCE - REBOOST VS THRUST-DRAG CANCELLATION SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS LA English DT Note C1 USN,POSTGRAD SCH,SPACE SYST ACAD GRP,MONTEREY,CA 93943. RP ROSS, IM (reprint author), USN,POSTGRAD SCH,DEPT AERONAUT & ASTRONAUT,MONTEREY,CA 93943, USA. NR 7 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 1995 VL 18 IS 4 BP 930 EP 932 DI 10.2514/3.21486 PG 3 WC Engineering, Aerospace; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA RP557 UT WOS:A1995RP55700045 ER PT J AU KOO, KP KERSEY, AD AF KOO, KP KERSEY, AD TI BRAGG GRATING-BASED LASER SENSORS SYSTEMS WITH INTERFEROMETRIC INTERROGATION AND WAVELENGTH-DIVISION MULTIPLEXING SO JOURNAL OF LIGHTWAVE TECHNOLOGY LA English DT Article ID STRAIN-SENSOR; FIBER-LASER; OPTICAL FIBERS AB We describe the use of fiber Bragg grating based lasers as sensors, An interferometric detection technique is presented for interrogating laser wavelength shifts due to measurand induced laser cavity strain with high resolution from both single-mode and multimode lasers, The principle of integrating multiple sensors to form an array is demonstrated using a wavelength division multiplexing approach. C1 USN,RES LAB,WASHINGTON,DC 20375. RP KOO, KP (reprint author), SFA INC,LANDOVER,MD 20785, USA. NR 14 TC 97 Z9 110 U1 1 U2 3 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0733-8724 J9 J LIGHTWAVE TECHNOL JI J. Lightwave Technol. PD JUL PY 1995 VL 13 IS 7 BP 1243 EP 1249 DI 10.1109/50.400692 PG 7 WC Engineering, Electrical & Electronic; Optics; Telecommunications SC Engineering; Optics; Telecommunications GA RK698 UT WOS:A1995RK69800008 ER PT J AU SIRKIS, J BERKOFF, TA JONES, RT SINGH, H KERSEY, AD FRIEBELE, EJ PUTNAM, MA AF SIRKIS, J BERKOFF, TA JONES, RT SINGH, H KERSEY, AD FRIEBELE, EJ PUTNAM, MA TI IN-LINE FIBER ETALON (ILFE) FIBEROPTIC STRAIN SENSORS SO JOURNAL OF LIGHTWAVE TECHNOLOGY LA English DT Article AB This paper describes an optical fiber interferometer that uses a short segment of silica hollow-core fiber spliced between two sections of single-mode fiber to form a mechanically robust in-line optical cavity. The hollow-core fiber is specifically manufactured to have an outer diameter that is equal to the outer diameter of the single mode lead fibers, thereby combining the best qualities of existing intrinsic and extrinsic Fabry-Perot sensors. Uniaxial tension and pure bending strength tests are used to show that the new configuration does not diminish the axial strength of bare fiber and reduces the bending strength by 17% at most, Similar tests confirm that the fiber sensor has 1.96% strain to failure, Axisymmetric finite element analysis is used to investigate the reliability of the in-line etalon when it is embedded in a typical thermoset composite, and parametric studies are performed to determine the mechanically optimal cavity length. The fiber optic sensor is tested using low coherence interferometry with pseudo-heterodyne demodulation under strain and temperature fields, The strain response compares well with resistance strain gages, and the temperature tests confirm the low thermal apparent strain of this sensor. C1 SFA INC,LANDOVER,MD 20785. USN,RES LAB,DIV OPT SCI,WASHINGTON,DC 20375. RP SIRKIS, J (reprint author), UNIV MARYLAND,SMART MAT & STRUCT RES CTR,COLLEGE PK,MD 20742, USA. NR 18 TC 82 Z9 85 U1 2 U2 11 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0733-8724 J9 J LIGHTWAVE TECHNOL JI J. Lightwave Technol. PD JUL PY 1995 VL 13 IS 7 BP 1256 EP 1263 DI 10.1109/50.400690 PG 8 WC Engineering, Electrical & Electronic; Optics; Telecommunications SC Engineering; Optics; Telecommunications GA RK698 UT WOS:A1995RK69800010 ER PT J AU DAVIS, MA KERSEY, AD AF DAVIS, MA KERSEY, AD TI APPLICATION OF A FIBER FOURIER-TRANSFORM SPECTROMETER TO THE DETECTION OF WAVELENGTH-ENCODED SIGNALS FROM BRAGG GRATING SENSORS SO JOURNAL OF LIGHTWAVE TECHNOLOGY LA English DT Article ID STRAIN-SENSOR; INTERFEROMETERS; SYSTEM AB We describe an all-fiber Fourier transform spectrometer for decoding the wavelength shifts from a series of Bragg grating sensors. The system described uses an optical fiber Michelson interferometer with one arm wrapped on a piezoelectric driven stretcher capable of inducing a similar to 10 cm fiber length change. Passive polarization compensation is utilized which eliminates the possibility of random polarization fading in the interferometer causing apodization of the interferogram. This permits an all-fiber design without the need for specialty optical fiber or external polarization adjustments. A reference Nd:YAG laser is used to stabilize the interferometric scan in a phase-locked loop configuration by way of slow and fast feedback correction elements. A spectral resolution of <0.07 cm(-1) was obtained, which corresponds to a Bragg wavelength shift of similar to 0.015 nm in the 1.55 mu m region, The simultaneous wavelength determination capacity of the device also permits it to be used in a variety of other applications for analysis of optical spectra. RP DAVIS, MA (reprint author), USN,RES LAB,DIV OPT SCI,WASHINGTON,DC 20375, USA. NR 17 TC 78 Z9 81 U1 1 U2 13 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0733-8724 J9 J LIGHTWAVE TECHNOL JI J. Lightwave Technol. PD JUL PY 1995 VL 13 IS 7 BP 1289 EP 1295 DI 10.1109/50.400685 PG 7 WC Engineering, Electrical & Electronic; Optics; Telecommunications SC Engineering; Optics; Telecommunications GA RK698 UT WOS:A1995RK69800015 ER PT J AU BUCHOLTZ, F VILLARRUEL, CA DAVIS, AR KIRKENDALL, CK DAGENAIS, DM MCVICKER, JA PATRICK, SS KOO, KP WANG, G VALO, H LUND, T ANDERSEN, AG GJESSING, R EIDEM, EJ KNUDSEN, T AF BUCHOLTZ, F VILLARRUEL, CA DAVIS, AR KIRKENDALL, CK DAGENAIS, DM MCVICKER, JA PATRICK, SS KOO, KP WANG, G VALO, H LUND, T ANDERSEN, AG GJESSING, R EIDEM, EJ KNUDSEN, T TI MULTICHANNEL FIBEROPTIC MAGNETOMETER SYSTEM FOR UNDERSEA MEASUREMENTS SO JOURNAL OF LIGHTWAVE TECHNOLOGY LA English DT Article ID INTERFEROMETRIC SENSORS; LOW-FREQUENCY; NOISE; ELIMINATION AB We have designed, fabricated, and operated an undersea array of eight fiber-optic vector magnetometers. Each magnetometer consists of three magnetostrictive transducers aligned on orthogonal axes and incorporated in a single Michelson interferometer, During undersea operation, each interferometer exhibited less than 1 mu rad/root Hz phase noise, and the self-noise of each magnetic transducer was less than 0.2 nT/root Hz at 0.1 Hz, We discuss the design and performance of the optical system including noise mechanisms, We present the results of magnetic measurements of the geomagnetic field and the magnetic tracking of ships. C1 UNIV RES FDN,GREENBELT,MD 20770. SFA INC,LANDOVER,MD 20785. VIRGINIA POLYTECH INST & STATE UNIV,BLACKSBURG,VA 24061. NORWEGIAN DEF RES ESTAB,DIV ELECTR,N-2007 KJELLER,NORWAY. NORWEGIAN DEF ESTAB,DIV UNDERWATER DEF,N-3191 HORTEN,NORWAY. RP BUCHOLTZ, F (reprint author), USN,RES LAB,DIV OPT SCI,WASHINGTON,DC 20375, USA. NR 27 TC 16 Z9 18 U1 0 U2 5 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0733-8724 J9 J LIGHTWAVE TECHNOL JI J. Lightwave Technol. PD JUL PY 1995 VL 13 IS 7 BP 1385 EP 1395 DI 10.1109/50.400703 PG 11 WC Engineering, Electrical & Electronic; Optics; Telecommunications SC Engineering; Optics; Telecommunications GA RK698 UT WOS:A1995RK69800028 ER PT J AU HALL, DC BURNS, WK MOELLER, RP AF HALL, DC BURNS, WK MOELLER, RP TI HIGH-STABILITY ER3(+)-DOPED SUPERFLUORESCENT FIBER SOURCES SO JOURNAL OF LIGHTWAVE TECHNOLOGY LA English DT Article ID BROAD-BAND; INDUCED NONRECIPROCITY; WAVELENGTH STABILITY; OPTIC GYROSCOPES; EXCESS NOISE; LASER; EMISSION; DIODE AB Data are presented on Er3+-doped superfluorescent fiber sources showing the dependence of output characteristics on pump wavelength and power, fiber length, fiber temperature, and feedback, In particular, the broadband operation and mean wavelength stability required for fiber optic gyroscope applications are evaluated, Substantial improvements in the mean wavelength stability with pump power have been achieved by optimizing the fiber length, An all-fiber superfluorescent fiber source utilizing a fiber-pigtailed 980-nm diode pump laser is demonstrated, with a l-h mean wavelength stability better than 0.9 ppm RMS and less than or equal to ppm drift over 20 h, The intrinsic mean wavelength variation versus fiber temperature is measured, with values of 4.8 and 3.0 ppm/degrees C obtained for fiber lengths of 23 and 78 m, respectively. C1 USN,RES LAB,DIV OPT SCI,WASHINGTON,DC 20375. NR 36 TC 61 Z9 77 U1 0 U2 4 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0733-8724 J9 J LIGHTWAVE TECHNOL JI J. Lightwave Technol. PD JUL PY 1995 VL 13 IS 7 BP 1452 EP 1460 DI 10.1109/50.400711 PG 9 WC Engineering, Electrical & Electronic; Optics; Telecommunications SC Engineering; Optics; Telecommunications GA RK698 UT WOS:A1995RK69800036 ER PT J AU CHENG, SF WUNFOGLE, M RESTORFF, JB TETER, JP HATHAWAY, KB AF CHENG, SF WUNFOGLE, M RESTORFF, JB TETER, JP HATHAWAY, KB TI MAGNETOSTRICTIVE EFFECTS IN CU/CO/CU/FE SPIN-VALVE STRUCTURES SO JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS LA English DT Article; Proceedings Paper CT 14th International Colloquium on Magnetic Films and Surfaces (ICMFS)/International Symposium on Magnetic Ultrathin Films, Multilayers and Surfaces CY AUG 29-SEP 02, 1994 CL DUSSELDORF, GERMANY SP Mat Res Soc, E MRS AB We have investigated the magnetoelastic response of a series of Cu/Co/Cu/Fe multilayer films to applied stress by observing changes in the spin-valve magnetoresistance. The films were prepared by de magnetron sputtering onto glass or polyimide substrates with individual layer thicknesses ranging from 35 to 50 Angstrom. The typical magnetoresistance without external stress is about 1.2%. The strain induced by the applied stress varies from + 1600 (tension) to - 1300 (compression) parts per million. We observed a decrease (increase) of coercivity with compressive (tensile) strain for both Fe and Co. This indicates that in the film plane, Fe and Co films have the same positive sign of magnetostriction. The observed coercivity change is about +/- 10 Oe for the maximum applied strain in both cases. The resulting maximum change in Delta R/R with a 1% strain is about - 0.018 (+ 0.012) at the coercive field of Fe (Go). RP CHENG, SF (reprint author), USN,CTR SURFACE WARFARE,SILVER SPRING,MD 20903, USA. NR 3 TC 2 Z9 2 U1 1 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0304-8853 J9 J MAGN MAGN MATER JI J. Magn. Magn. Mater. PD JUL PY 1995 VL 148 IS 1-2 BP 344 EP 345 DI 10.1016/0304-8853(95)00265-0 PG 2 WC Materials Science, Multidisciplinary; Physics, Condensed Matter SC Materials Science; Physics GA RM330 UT WOS:A1995RM33000146 ER PT J AU JOHNSON, M AF JOHNSON, M TI SPIN INJECTION IN NIOBIUM FILMS SO JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS LA English DT Article; Proceedings Paper CT 14th International Colloquium on Magnetic Films and Surfaces (ICMFS)/International Symposium on Magnetic Ultrathin Films, Multilayers and Surfaces CY AUG 29-SEP 02, 1994 CL DUSSELDORF, GERMANY SP Mat Res Soc, E MRS ID CHARGE AB The spin injection technique is used to study spin transport in niobium films. Below the superconducting transition temperature, T-c, the data show evidence for the injection, diffusion and subsequent detection of spin polarized quasiparticles. RP JOHNSON, M (reprint author), USN,RES LAB,CODE 6340,WASHINGTON,DC 20375, USA. NR 15 TC 1 Z9 1 U1 1 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0304-8853 J9 J MAGN MAGN MATER JI J. Magn. Magn. Mater. PD JUL PY 1995 VL 148 IS 1-2 BP 349 EP 350 DI 10.1016/0304-8853(95)00267-7 PG 2 WC Materials Science, Multidisciplinary; Physics, Condensed Matter SC Materials Science; Physics GA RM330 UT WOS:A1995RM33000148 ER PT J AU ANZALONE, DA ANZALONE, FL FOS, PJ AF ANZALONE, DA ANZALONE, FL FOS, PJ TI HIGH-DENSITY LIPOPROTEIN-CHOLESTEROL - DETERMINING HYGIENIC FACTORS FOR INTERVENTION SO JOURNAL OF OCCUPATIONAL AND ENVIRONMENTAL MEDICINE LA English DT Article ID CORONARY HEART-DISEASE; MIDDLE-AGED MEN; PHYSICAL-ACTIVITY; COLLEGE ALUMNI; LIPIDS; SERUM; EXERCISE; FRAMINGHAM; POPULATION; PROGRAM AB Current guidelines of the Adult Treatment Panel on High-Density Lipoprotein-Cholesterol (HDL-C) emphasize the protective effect of HDL-C in reducing one's risk for coronary heart disease and recommend that individuals with serum HDL-C levels below 35 mg/dL utilize hygienic means to raise them. A cross-sectional study was performed to examine the relationship of the hygienic factors obesity (measured by percent body fat and body mass index), smoking, and aerobic exercise to HDL-C. The sample consisting of 1701 male employees of a large aerospace hardware assembly plant, were evaluated by health risk appraisal and anthropometric measurement. Regression analysis revealed a significant negative relationship Between body mass index, percent body fat, age, smoking and the level of HDL-C in the blood. Alcohol consumption was directly related to HDL-C, and Whites had a lower HDL-C than all other races combined. Aerobic exercise was not found to be significantly related to HDL-C. A model (multiple R(2) = 1136) consisting of age, race, alcohol consumption smoking and body mass index fit the data well. These findings justify weight management and smoking cessation interventions for raising HDL-C. However, the role of aerobic exercise was not supported in this study as a means of raising HDL-C. Future studies should use maximum oxygen consumption as a measure of aerobic capacity, which may be a better indicator of aerobic exercise level. The role of medication, and genetic and dietary factors in HDL-C management should also be explored Although findings from this study support smoking cessation and weight management interventions, longitudinal research is needed to determine the most effective strategy for HDL-C management. C1 USN,MED CLIN,WASHINGTON,DC. TULANE UNIV,MED CTR,SCH PUBL HLTH & TROP MED,NEW ORLEANS,LA 70112. NR 32 TC 5 Z9 5 U1 3 U2 3 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 1076-2752 J9 J OCCUP ENVIRON MED JI J. Occup. Environ. Med. PD JUL PY 1995 VL 37 IS 7 BP 856 EP 861 DI 10.1097/00043764-199507000-00016 PG 6 WC Public, Environmental & Occupational Health SC Public, Environmental & Occupational Health GA RJ124 UT WOS:A1995RJ12400014 PM 7552471 ER PT J AU GROSSMAN, TW MAZUR, JM CUMMINGS, RJ AF GROSSMAN, TW MAZUR, JM CUMMINGS, RJ TI AN EVALUATION OF THE ADAMS FORWARD BEND TEST AND THE SCOLIOMETER IN A SCOLIOSIS SCHOOL SCREENING SETTING SO JOURNAL OF PEDIATRIC ORTHOPAEDICS LA English DT Article DE ADAMS FORWARD BEND TEST; SCOLIOMETER; SCOLIOSIS SCREENING AB We examined the ability of the Adams forward test and the scoliometer to detect truncal rotation or asymmetry in a school screening setting. Of 954 sixth graders examined with each test independently, 123 and 13 [using an angle of trunk rotation (ATR) of >5 and 7 degrees, respectively] were found to be abnormal on scoliometer examination but appeared normal on the Adams test. Se lecting children for scoliometer examination on the basis of the Adams test is not supported by our data and may not be consistent with generally accepted principles of public health screening. C1 USN HOSP,DEPT ORTHOPAED,GREAT LAKES,IL. NR 0 TC 28 Z9 32 U1 1 U2 4 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 0271-6798 J9 J PEDIATR ORTHOPED JI J. Pediatr. Orthop. PD JUL-AUG PY 1995 VL 15 IS 4 BP 535 EP 538 PG 4 WC Orthopedics; Pediatrics SC Orthopedics; Pediatrics GA RE167 UT WOS:A1995RE16700025 PM 7560050 ER PT J AU TERRY, T AF TERRY, T TI HOW TO HAVE FUN AT SCHOOL, FIND FREE TIME, AND GET GOOD GRADES TOO SO JOURNAL OF PROFESSIONAL ISSUES IN ENGINEERING EDUCATION AND PRACTICE LA English DT Article AB In today's competitive environment, businesses must adopt continuous improvement to succeed. As a result, engineering students must become familiar with continuous improvement to function in business when they graduate. The best way for them to learn is by putting these ideas into action in school. This paper presents a plan that shows students how to use their available time effectively, track their progress, foresee problems before they occur, and take action to prevent those problems. The paper is written primarily for students and has applications for all of education. I urge you to pass out copies of it to students you know and at ASCE Student Chapter meetings. C1 USA,CORPS ENGINEERS,COLD REG RES & ENGN LAB,HANOVER,NH 03755. RP TERRY, T (reprint author), USN,CIV ENGR CORPS,72 LYME RD,HANOVER,NH 03755, USA. NR 2 TC 0 Z9 0 U1 0 U2 0 PU ASCE-AMER SOC CIVIL ENG PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2398 SN 1052-3928 J9 J PROF ISS ENG ED PR JI J. Prof. Issues Eng. Educ. Pract. PD JUL PY 1995 VL 121 IS 3 BP 177 EP 182 DI 10.1061/(ASCE)1052-3928(1995)121:3(177) PG 6 WC Education, Scientific Disciplines; Engineering, Multidisciplinary SC Education & Educational Research; Engineering GA RD999 UT WOS:A1995RD99900005 ER PT J AU CLARK, MT RICHARDS, MW MEIERS, JC AF CLARK, MT RICHARDS, MW MEIERS, JC TI SEATING ACCURACY AND FRACTURE STRENGTH OF VENTED AND NONVENTED CERAMIC CROWNS LUTED WITH 3 CEMENTS SO JOURNAL OF PROSTHETIC DENTISTRY LA English DT Article ID CAST RESTORATIONS; LUTING AGENTS; MARGINAL FIT; METAL AB Methods to facilitate the seating of artificial crowns can improve the gingival margins and ensure longevity. This study examined the effects of venting and different luting agents on the seating accuracy and compressive strength of Dicor ceramic crowns. Vented and unaltered anterior restorations were tested using zinc phosphate cement (ZnPO4), glass ionomer, and composite resin cement. Rexillium metal dies of a tooth preparation of a maxillary canine were provided and standardized crowns were fabricated. The artificial crowns were evaluated for adaptation of the finish line before and after cementation, then were compressively loaded to failure. Under the conditions of this study, neither the design of the artificial crown nor the luting agent had a significant effect on the compressive strength. Composite resinous cement appeared to enhance seating of the crown, whereas ZnPO4 cement inhibited seating. C1 USN,SCH DENT,NATL NAVAL DENT CTR,RES DEPT,BETHESDA,MD 20889. USN,SCH DENT,NATL NAVAL DENT CTR,DEPT PROSTHODONT,BETHESDA,MD 20889. NR 21 TC 16 Z9 18 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 JUL PY 1995 VL 74 IS 1 BP 18 EP 24 DI 10.1016/S0022-3913(05)80223-9 PG 7 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA RG141 UT WOS:A1995RG14100003 PM 7674185 ER PT J AU SNEESBY, TA MEIERS, JC AF SNEESBY, TA MEIERS, JC TI INFLUENCE OF SALIVA CONTAMINATION AND ABRASION ON RESIN TO TIN-PLATED ALLOY BOND STRENGTHS SO JOURNAL OF PROSTHETIC DENTISTRY LA English DT Article ID RETAINERS AB This investigation studied the effects of abrasion and salivary contamination on the shear bond strength of a composite resin bonded to tin-plated gold alloy. Experimental groups (n = 15) consisted of: group 1, no surface treatment; group 2, enamel abraded; and group 3, saliva-contaminated. After surface stressing and bonding, groups were thermocycled before shear testing. Fractured interfaces were analyzed by use of light microscopy and SEM. Specimens in group 3 (12.2 +/- 2.5 MPa) had significantly lower bond strengths than group 1 (17.9 +/- 6.8 MPa). The shear bond strengths of resin bonded to tin-plated metal were significantly affected by salivary contamination but not by abrasion. C1 USN,SCH DENT,RES DEPT,BETHESDA,MD 20889. NIDR,RES DEPT,BETHESDA,MD. NR 16 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 0022-3913 J9 J PROSTHET DENT JI J. Prosthet. Dent. PD JUL PY 1995 VL 74 IS 1 BP 100 EP 105 DI 10.1016/S0022-3913(05)80232-X PG 6 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA RG141 UT WOS:A1995RG14100012 PM 7674179 ER PT J AU DAHLBURG, JP KLAPISCH, M GARDNER, JH DEVORE, CR SCHMITT, AJ BARSHALOM, A AF DAHLBURG, JP KLAPISCH, M GARDNER, JH DEVORE, CR SCHMITT, AJ BARSHALOM, A TI RADIATING PLASMA STRUCTURES IN ABLATING, LASER-PRODUCED PLASMAS SO JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER LA English DT Article ID TRANSITION-ARRAYS; INSTABILITIES; SPECTRA; MODEL; IRON AB Radiation driven, shock-like plasma structures (RPS) are observed in simulations of low Z, laser-produced, ablating plasmas. The locations of the structures correlate with density-temperature peaks in the integrated emission coefficient as computed from the STA opacity database that is used in the simulations. Many aspects of the RPS closely resemble those of radiative condensates such as enhanced densities and reduced temperatures. Experiments to detect RPS should validate both the hydrodynamics and the opacity modeling in regions of relevance to inertial confinement fusion pellet design. C1 USN,RES LAB,FD,WASHINGTON,DC 20375. ARTEP INC,COLUMBIA,MD. USN,RES LAB,DIV PLASMA PHYS,WASHINGTON,DC 20375. NUCL RES CTR NEGEV,IL-84190 BEER SHEVA,ISRAEL. RP DAHLBURG, JP (reprint author), USN,RES LAB,LCP,WASHINGTON,DC 20375, USA. RI DeVore, C/A-6067-2015 OI DeVore, C/0000-0002-4668-591X NR 29 TC 19 Z9 19 U1 0 U2 2 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-AUG PY 1995 VL 54 IS 1-2 BP 113 EP 121 DI 10.1016/0022-4073(95)00047-O PG 9 WC Optics; Spectroscopy SC Optics; Spectroscopy GA RL456 UT WOS:A1995RL45600013 ER PT J AU JACOBS, VL AF JACOBS, VL TI AUTOIONIZATION PHENOMENA IN PLASMA RADIATION PROCESSES SO JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER LA English DT Article ID DIELECTRONIC SATELLITE SPECTRA; RECOMBINATION; IONS; COLLISIONS; IONIZATION; EMISSION AB Autoionizing resonances can play important roles in atomic radiation processes associated with electron-ion collisions in a high-temperature plasma. In the kinetic-theory description, autoionizing resonances provide indirect contributions to the rates for excitation, ionization, and recombination. Calculations have been performed for the rate coefficients describing dielectronic recombination, which is often the dominant recombination mechanism for non-hydrogenic ions, In the determination of the distribution of charge states, account has been taken of the contributions from autoionization following inner-shell-electron excitation and radiative stabilization following radiationless electron capture (dielectronic recombination). The radiative emission processes that have been investigated correspond to bound-bound, free-bound, and free-free transitions, Particular emphasis has been given to the detailed simulation of the K-alpha satellite spectra due to both inner-shell-electron excitation and dielectronic recombination. In a sufficiently dense plasma, the populations of the autoionizing states can be substantially altered by both collision processes and plasma electric microfields. As a result, significant modifications can occur in the dielectronic recombination rates and satellite line intensities. It is desirable to treat these effects self-consistently with the high-density modifications to the spectral-line shapes, taking into account the same set of elementary atomic collision, radiation, and autoionization processes. A comprehensive framework for a self-consistent description is provided by a density-matrix approach, in conjunction with Liouville-space projection-operator and resolvent-operator techniques. RP JACOBS, VL (reprint author), USN,RES LAB,DIV CONDENSED MATTER & RADIAT SCI,CODE 6693,WASHINGTON,DC 20375, USA. NR 32 TC 12 Z9 12 U1 0 U2 1 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-AUG PY 1995 VL 54 IS 1-2 BP 195 EP 205 DI 10.1016/0022-4073(95)00055-P PG 11 WC Optics; Spectroscopy SC Optics; Spectroscopy GA RL456 UT WOS:A1995RL45600021 ER PT J AU SEELY, JF AF SEELY, JF TI HIGH-RESOLUTION IMAGING AND SPECTROSCOPY OF DENSE-PLASMAS USING MULTILAYER X-RAY OPTICS SO JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER LA English DT Article ID WAVELENGTH REGION; OPERATION AB Instruments incorporating normal-incidence mirrors and gratings have been used to record images and spectra in the extreme u.v. and soft x-ray regions. The multilayer coatings were optimized to reflect wavebands of interest for the diagnosis of dense plasmas. Images at wavelengths of 33.8 and 130 Angstrom were recorded with spatial resolution of 5 mu m. Using normal-incidence multilayer gratings operating in the wavelength region 130-300 Angstrom, spectra with resolution of 14,000 were recorded which allows the use of line profiles to determine Doppler plasma motion an Stark densities. Because of the high throughput of the multilayer optics, the instruments can be located at large distances from the plasmas, and the optics were undamaged by the intense radiation and debris fluxes from laser-produced plasmas. The absolute radiation flux was determined at wavelengths of 33.8 and 130 Angstrom. RP SEELY, JF (reprint author), USN,RES LAB,DIV SPACE SCI,WASHINGTON,DC 20375, USA. NR 8 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 0022-4073 J9 J QUANT SPECTROSC RA JI J. Quant. Spectrosc. Radiat. Transf. PD JUL-AUG PY 1995 VL 54 IS 1-2 BP 377 EP 385 DI 10.1016/0022-4073(95)00073-T PG 9 WC Optics; Spectroscopy SC Optics; Spectroscopy GA RL456 UT WOS:A1995RL45600039 ER PT J AU LOTSHAW, WT MCMORROW, D THANTU, N MELINGER, JS KITCHENHAM, R AF LOTSHAW, WT MCMORROW, D THANTU, N MELINGER, JS KITCHENHAM, R TI INTERMOLECULAR VIBRATIONAL COHERENCE IN MOLECULAR LIQUIDS SO JOURNAL OF RAMAN SPECTROSCOPY LA English DT Article ID OPTICAL KERR DYNAMICS; FEMTOSECOND DYNAMICS; RAMAN-SPECTROSCOPY; LIGHT-SCATTERING; BINARY-SOLUTIONS; CS2; RESPONSES; SPECTRA; MOTION; ACETONITRILE AB The femtosecond optical heterodyne detected optical Kerr effect/Raman-induced Kerr effect (OHD OKE/RIKE) is described in detail with emphasis on the utility for investigating the intermolecular spectra and dynamics of liquids, The femtosecond dynamics of the liquids CS2, benzene and CCl4 are addressed through a combination of conventional time-domain kinetic and Fourier-transform analyses, and the physical origin of the intermolecular intensity is addressed for each, The distinctions between the excitation mechanisms of the femtosecond OKE/RIKE and other continuous-wave and picosecond Raman techniques are described, The distinctions between the dephasing mechanisms of intramolecular and intermolecular vibrational modes are discussed. C1 USN,RES LAB,WASHINGTON,DC 20375. ROBERT KITCHENHAM CONSULTING,MISSISSAUGA,ON LSN 2K9,CANADA. RP LOTSHAW, WT (reprint author), GE CO,RES & DEV,POB 8,RM KWC-627,SCHENECTADY,NY 12301, USA. NR 52 TC 159 Z9 159 U1 3 U2 19 PU JOHN WILEY & SONS LTD PI W SUSSEX PA BAFFINS LANE CHICHESTER, W SUSSEX, ENGLAND PO19 1UD SN 0377-0486 J9 J RAMAN SPECTROSC JI J. Raman Spectrosc. PD JUL PY 1995 VL 26 IS 7 BP 571 EP 583 DI 10.1002/jrs.1250260712 PG 13 WC Spectroscopy SC Spectroscopy GA RN347 UT WOS:A1995RN34700010 ER PT J AU TREECE, RE HORWITZ, JS QADRI, SB SKELTON, EF DONOVAN, EP CHRISEY, DB AF TREECE, RE HORWITZ, JS QADRI, SB SKELTON, EF DONOVAN, EP CHRISEY, DB TI METASTABLE NITRIDE SYNTHESIS BY PULSED-LASER DEPOSITION - A NEW PHASE IN THE NBNX SYSTEM SO JOURNAL OF SOLID STATE CHEMISTRY LA English DT Article ID THIN-FILMS; SUPERCONDUCTING FILMS; EPITAXIAL-GROWTH; NIOBIUM; TEMPERATURE AB Pulsed laser deposition (PLD) has been used to grow a series of NbNx (0 less than or equal to x less than or equal to 1.2) thin-film materials, including a new superconducting phase. The structural and electrical properties of the NbN, films were characterized. Structural analysis of the new NbN phase indicates that it is stabilized by heteroepitaxial growth on (100) MgO and is shown to be a primitive cubic distortion from the typical B1, or rock-salt structure. In addition, the NbN phase has a higher superconducting critical temperature and a larger lattice parameter when compared with films of B1-NbN. Growth of this new phase demonstrates that the nonequilibrium synthesis properties of PLD can be used to deposit new, metastable materials. (C) 1995 Academic Press, Inc. RP TREECE, RE (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 36 TC 14 Z9 14 U1 2 U2 5 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 SN 0022-4596 J9 J SOLID STATE CHEM JI J. Solid State Chem. PD JUL PY 1995 VL 117 IS 2 BP 294 EP 299 DI 10.1006/jssc.1995.1276 PG 6 WC Chemistry, Inorganic & Nuclear; Chemistry, Physical SC Chemistry GA RJ668 UT WOS:A1995RJ66800010 ER PT J AU LOWEMA, CK VANDERAH, TA SMITH, TE AF LOWEMA, CK VANDERAH, TA SMITH, TE TI THE TERNARY YTTRIUM SULFIDES, CAY2S4, SRY2S4, AND BAY2S4 - STRUCTURES AND PROPERTIES SO JOURNAL OF SOLID STATE CHEMISTRY LA English DT Article ID CRYSTAL-CHEMISTRY; AB2X4 AB X-ray single-crystal structure determinations have confirmed that CaY2S4 crystallizes in the orthorhombic [Yb3S4]-type structure whereas SrY2S4 and BaY2S4 adopt the orthorhombic [CaFe2O4] structure. Both structure types feature three-dimensional frameworks built of edge- and corner-sharing [YS6] octahedra. CaY2S4, in space group Pnma, has cell dimensions a = 12.953(3) Angstrom, b = 3.8835(5) Angstrom, c = 13.081(3) Angstrom, Vol = 658.0(2) Angstrom(3), Z = 4, and D-x = 3.494 g/cm(3) (M(F) 346.1). SrY2S4, in Pmnb, has a 3.9775(6), b = 11.974(2), c = 14.294(2) Angstrom, Vol = 680.8(2) Angstrom(3), Z = 4, and D-x = 3.841 g/cm(3) for M(F) = 393.7; BaY2S4, in Pmnb, has a = 4.0263(2), b = 12.2134(8), c 14.484(1) Angstrom, Vol 712.23(9) Angstrom(3), Z = 4, and D-x = 4.135 g/cm(3) for M(F) = 443.4. Room temperature X-ray powder diffraction data for all three compounds and high-temperature unit cells for CaY2S4 are also reported. The overall average linear thermal expansion of CaY2S4 upon heating was found to be approximately 11.9 x 10(-6)/degrees K as compared to that of 7.2 x 10(-6)/degrees K found for ZnS. The onset oxidative decomposition temperatures for CaY2S4, SrY2S4, and BaY2S4 were observed to be 545, 565, and 590 degrees C, respectively, as compared to 530 degrees C for ZnS. The properties of these compounds indicate that they are potentially useful as infrared window materials. (C) 1995 Academic Press, Inc. C1 CONNECTICUT COLL,DEPT CHEM,NEW LONDON,CT 06320. RP LOWEMA, CK (reprint author), USN,CTR AIR WARFARE,RES DEPT,CHINA LAKE,CA 93555, USA. NR 58 TC 29 Z9 32 U1 0 U2 5 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 SN 0022-4596 J9 J SOLID STATE CHEM JI J. Solid State Chem. PD JUL PY 1995 VL 117 IS 2 BP 363 EP 372 DI 10.1006/jssc.1995.1286 PG 10 WC Chemistry, Inorganic & Nuclear; Chemistry, Physical SC Chemistry GA RJ668 UT WOS:A1995RJ66800020 ER PT J AU HEBBAR, SK PLATZER, MF SMITH, EH SALAZAR, ME AF HEBBAR, SK PLATZER, MF SMITH, EH SALAZAR, ME TI HIGH-ANGLE-OF-ATTACK WIND-TUNNEL INVESTIGATION OF A MULTIMISSION VEHICLE SO JOURNAL OF SPACECRAFT AND ROCKETS LA English DT Note C1 USN,CTR AIR WARFARE,DIV WEAPONS,CHINA LAKE,CA 93555. RP HEBBAR, SK (reprint author), USN,POSTGRAD SCH,DEPT AERONAUT & ASTRONAUT,MONTEREY,CA 93943, USA. NR 7 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 0022-4650 J9 J SPACECRAFT ROCKETS JI J. Spacecr. Rockets PD JUL-AUG PY 1995 VL 32 IS 4 BP 734 EP 736 DI 10.2514/3.26677 PG 3 WC Engineering, Aerospace SC Engineering GA RP016 UT WOS:A1995RP01600023 ER PT J AU SEMMEL, RD WILSON, M AF SEMMEL, RD WILSON, M TI REENGINEERING COMPLEX-SYSTEMS SO JOURNAL OF SYSTEMS AND SOFTWARE LA English DT Editorial Material C1 USN,CTR SURFACE WEAP,SILVER SPRING,MD 20910. RP SEMMEL, RD (reprint author), JOHNS HOPKINS UNIV,APPL PHYS LAB,JOHNS HOPKINS RD,LAUREL,MD 20723, USA. NR 3 TC 1 Z9 1 U1 0 U2 0 PU ELSEVIER SCIENCE PUBL CO INC PI NEW YORK PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 SN 0164-1212 J9 J SYST SOFTWARE JI J. Syst. Softw. PD JUL-AUG PY 1995 VL 30 IS 1-2 BP 1 EP 2 DI 10.1016/0164-1212(94)00113-2 PG 2 WC Computer Science, Software Engineering; Computer Science, Theory & Methods SC Computer Science GA RC945 UT WOS:A1995RC94500001 ER PT J AU WELCH, LR SAMUEL, AL MASTERS, MW HARRISON, RD WILSON, M CARUSO, J AF WELCH, LR SAMUEL, AL MASTERS, MW HARRISON, RD WILSON, M CARUSO, J TI REENGINEERING COMPUTER-BASED SYSTEMS FOR ENHANCED CONCURRENCY AND LAYERING SO JOURNAL OF SYSTEMS AND SOFTWARE LA English DT Article AB This article presents a methodology for reengineering complex computer systems. An important aspect of the reengineering methodology is the mission-critical software architecture (MCSA), a hierarchical view of complex systems that includes the levels of task clusters, tasks, packages, procedures, and statements. Reverse engineering identifies system attributes at each level of the MCSA. After reverse engineering, the system's software design is restructured to increase layering and concurrency, and code is generated to effectively use language constructs. Given the code of tasks and packages, program components are partitioned into tightly coupled clusters, and clusters are assigned to hardware processors. A key element of the reengineering methodology is a set of concurrency metrics for guiding the transformation tasks. The metrics are defined at each level of the MCSA and enable the assessment of concurrency within a component or a cluster, and also among components and clusters. The reengineering methodology is illustrated via a complex Navy system called AEGIS. The article also presents a generic Ada module, which serves as a template for reengineered AEGIS modules. C1 USN,CTR SURFACE WARFARE,DAHLGREN DIV,DAHLGREN,VA 22448. USN,CTR SURFACE WEAP,CTR SURFACE WARFARE,WHITE OAK DETACHMENT,SILVER SPRING,MD 20910. COMP SCI CORP,DAHLGREN,VA. RP WELCH, LR (reprint author), NEW JERSEY INST TECHNOL,DEPT COMP & INFORMAT SCI,NEWARK,NJ 07102, USA. NR 22 TC 1 Z9 1 U1 0 U2 0 PU ELSEVIER SCIENCE PUBL CO INC PI NEW YORK PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 SN 0164-1212 J9 J SYST SOFTWARE JI J. Syst. Softw. PD JUL-AUG PY 1995 VL 30 IS 1-2 BP 45 EP 70 DI 10.1016/0164-1212(94)00116-5 PG 26 WC Computer Science, Software Engineering; Computer Science, Theory & Methods SC Computer Science GA RC945 UT WOS:A1995RC94500004 ER PT J AU AU, WWL PAWLOSKI, JL NACHTIGALL, PE BLONZ, M GISNER, RC AF AU, WWL PAWLOSKI, JL NACHTIGALL, PE BLONZ, M GISNER, RC TI ECHOLOCATION SIGNALS AND TRANSMISSION BEAM PATTERN OF A FALSE KILLER WHALE (PSEUDORCA CRASSIDENS) SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA LA English DT Article ID ATLANTIC BOTTLENOSE DOLPHIN; PROPAGATION C1 ECOLE NATL VET NANTES,F-44087 NANTES 03,FRANCE. OFF NAVAL RES,ARLINGTON,VA 22217. RP AU, WWL (reprint author), UNIV HAWAII,HAWAII INST MARINE BIOL,POB 1106,KAILUA,HI 96734, USA. NR 28 TC 89 Z9 91 U1 1 U2 8 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0001-4966 J9 J ACOUST SOC AM JI J. Acoust. Soc. Am. PD JUL PY 1995 VL 98 IS 1 BP 51 EP 59 DI 10.1121/1.413643 PG 9 WC Acoustics; Audiology & Speech-Language Pathology SC Acoustics; Audiology & Speech-Language Pathology GA RH803 UT WOS:A1995RH80300007 PM 7608405 ER PT J AU PFLUG, LA IOUP, GE IOUP, JW FIELD, RL AF PFLUG, LA IOUP, GE IOUP, JW FIELD, RL TI PREDICTION OF SIGNAL-TO-NOISE RATIO GAIN FOR PASSIVE HIGHER-ORDER CORRELATION DETECTION OF ENERGY TRANSIENTS SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA LA English DT Article ID DETERMINISTIC TRANSIENTS; BISPECTRAL ANALYSIS; SPECTRA C1 UNIV NEW ORLEANS,DEPT PHYS,NEW ORLEANS,LA 70148. RP PFLUG, LA (reprint author), USN,RES LAB,BAY ST LOUIS,MS 39529, USA. NR 27 TC 4 Z9 4 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0001-4966 J9 J ACOUST SOC AM JI J. Acoust. Soc. Am. PD JUL PY 1995 VL 98 IS 1 BP 248 EP 260 DI 10.1121/1.414332 PG 13 WC Acoustics; Audiology & Speech-Language Pathology SC Acoustics; Audiology & Speech-Language Pathology GA RH803 UT WOS:A1995RH80300029 ER PT J AU AINSLEIGH, PL GEORGE, JD AF AINSLEIGH, PL GEORGE, JD TI SIGNAL MODELING IN REVERBERANT ENVIRONMENTS WITH APPLICATION TO UNDERWATER ELECTROACOUSTIC TRANSDUCER CALIBRATION SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA LA English DT Article ID TRANSIENT SUPPRESSION; VARIABLES C1 SIGNALMETR INC,WINTER PK,FL 32789. RP AINSLEIGH, PL (reprint author), USN,RES LAB,UNDERWATER SOUND REFERENCE DETACHMENT,ORLANDO,FL 32856, USA. NR 26 TC 3 Z9 4 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0001-4966 J9 J ACOUST SOC AM JI J. Acoust. Soc. Am. PD JUL PY 1995 VL 98 IS 1 BP 270 EP 279 DI 10.1121/1.413720 PG 10 WC Acoustics; Audiology & Speech-Language Pathology SC Acoustics; Audiology & Speech-Language Pathology GA RH803 UT WOS:A1995RH80300031 ER PT J AU CUSCHIERI, JM FEIT, D AF CUSCHIERI, JM FEIT, D TI ACOUSTIC SCATTERING FROM A FLUID-LOADED CYLINDRICAL-SHELL WITH DISCONTINUITIES - SINGLE-PLATE BULKHEAD SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA LA English DT Article C1 DAVID TAYLOR RES CTR,NSWC,DIV CARDEROCK,BETHESDA,MD 20084. RP CUSCHIERI, JM (reprint author), FLORIDA ATLANTIC UNIV,DEPT OCEAN ENGN,CTR ACOUST & VIBRAT,BOCA RATON,FL 33431, USA. NR 9 TC 7 Z9 8 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0001-4966 J9 J ACOUST SOC AM JI J. Acoust. Soc. Am. PD JUL PY 1995 VL 98 IS 1 BP 320 EP 338 DI 10.1121/1.413681 PG 19 WC Acoustics; Audiology & Speech-Language Pathology SC Acoustics; Audiology & Speech-Language Pathology GA RH803 UT WOS:A1995RH80300037 ER PT J AU CUSCHIERI, JM FEIT, D AF CUSCHIERI, JM FEIT, D TI ACOUSTIC SCATTERING FROM A FLUID-LOADED CYLINDRICAL-SHELL WITH DISCONTINUITIES - DOUBLE-PLATE BULKHEAD SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA LA English DT Article C1 DAVID TAYLOR RES CTR,NSWC,DIV CARDEROCK,BETHESDA,MD 20084. RP CUSCHIERI, JM (reprint author), FLORIDA ATLANTIC UNIV,DEPT OCEAN ENGN,CTR ACOUST & VIBRAT,BOCA RATON,FL 33431, USA. NR 6 TC 6 Z9 7 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0001-4966 J9 J ACOUST SOC AM JI J. Acoust. Soc. Am. PD JUL PY 1995 VL 98 IS 1 BP 339 EP 352 DI 10.1121/1.413687 PG 14 WC Acoustics; Audiology & Speech-Language Pathology SC Acoustics; Audiology & Speech-Language Pathology GA RH803 UT WOS:A1995RH80300038 ER PT J AU PIQUETTE, JC AF PIQUETTE, JC TI A FULLY MECHANICAL LINEAR TRANSDUCER MODEL WITH APPLICATION TO GENERALIZING THE NONLINEAR HUNT ELECTROSTATIC TRANSDUCER FOR HARMONIC AND TRANSIENT SUPPRESSION SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA LA English DT Article RP PIQUETTE, JC (reprint author), USN,RES LAB,UNDERWATER SOUND REFERENCE DETACHMENT,POB 568337,ORLANDO,FL 32856, USA. NR 11 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0001-4966 J9 J ACOUST SOC AM JI J. Acoust. Soc. Am. PD JUL PY 1995 VL 98 IS 1 BP 422 EP 430 DI 10.1121/1.413698 PG 9 WC Acoustics; Audiology & Speech-Language Pathology SC Acoustics; Audiology & Speech-Language Pathology GA RH803 UT WOS:A1995RH80300046 ER PT J AU GRAGG, RF WURMSER, D AF GRAGG, RF WURMSER, D TI PSEUDO-DOPPLER RESONANCE PHENOMENA IN CONTINUOUS-WAVE SCATTERING FROM EVOLVING INTERMEDIATE BUBBLE PLUMES SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA LA English DT Article RP GRAGG, RF (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 12 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0001-4966 J9 J ACOUST SOC AM JI J. Acoust. Soc. Am. PD JUL PY 1995 VL 98 IS 1 BP 473 EP 483 DI 10.1121/1.413705 PG 11 WC Acoustics; Audiology & Speech-Language Pathology SC Acoustics; Audiology & Speech-Language Pathology GA RH803 UT WOS:A1995RH80300053 ER PT J AU GAUNAURD, GC HUANG, H STRIFORS, HC AF GAUNAURD, GC HUANG, H STRIFORS, HC TI ACOUSTIC SCATTERING BY A PAIR OF SPHERES SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA LA English DT Article ID WAVES AB If acoustic scattering by a single sphere is the most basic problem of scalar scattering, then sound scattering by a pair of spheres is next in the hierarchy of complexity. The problem has been formulated by several approaches in the past, but no actual detailed studies have been openly published so far. Two spheres insonified by plane waves at arbitrary angles of incidence are considered. The solution of this simplest of multiple-scattering problems is generated by exactly accounting for the interaction between the two spheres, which can be strong or weak depending on their separation, compositions, frequency, and directions of observation. The tools to attack this type of problem are the (forward/backward) addition theorems for the spherical wave functions, which permit the field expansions-all referred to the center of one of the spheres-by means of Wigner (3-j) symbols. The fields scattered by each sphere are obtained as pairs of (double) sums in the spherical wave functions, with coefficients that are coupled through an infinite set of two linear, complex, algebraic equations. These are then solved (by truncation) and used to obtain (i) the scattered fields and (ii) the scattering cross section of the pair of spheres. These exact results are illustrated with many plots of the form functions at various relevant incidence angles, separations, frequencies, etc. Finally, some asymptotic approximations for this problem that are analytically simple are obtained. They are displayed and compared to the exact solutions found above, with quite satisfactory results, even for the simple approximations used here. Thus the phenomenon is described, explained, graphically displayed, physically interpreted, and reduced to a simple accurate approximation in some important cases. (C) 1995 Acoustical Society of America. C1 NATL DEF RES ESTAB,S-17290 STOCKHOLM,SWEDEN. RP GAUNAURD, GC (reprint author), USN,CTR SURFACE WARFARE,DAHLGREN DIV,WHITE OAK DETACHMENT,SILVER SPRING,MD 20903, USA. NR 46 TC 50 Z9 52 U1 0 U2 10 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0001-4966 J9 J ACOUST SOC AM JI J. Acoust. Soc. Am. PD JUL PY 1995 VL 98 IS 1 BP 495 EP 507 DI 10.1121/1.414447 PG 13 WC Acoustics; Audiology & Speech-Language Pathology SC Acoustics; Audiology & Speech-Language Pathology GA RH803 UT WOS:A1995RH80300055 ER PT J AU ROSEN, EM CANNING, FX COUCHMAN, LS AF ROSEN, EM CANNING, FX COUCHMAN, LS TI A SPARSE INTEGRAL-EQUATION METHOD FOR ACOUSTIC SCATTERING SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA LA English DT Article ID MATRIX C1 ROCKWELL INT SCI CTR,THOUSAND OAKS,CA 91360. USN,RES LAB,WASHINGTON,DC 20375. RP ROSEN, EM (reprint author), SPA INC,1401 MCCORMICK DR,LANDOVER,MD 20785, USA. NR 21 TC 7 Z9 7 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0001-4966 J9 J ACOUST SOC AM JI J. Acoust. Soc. Am. PD JUL PY 1995 VL 98 IS 1 BP 599 EP 610 DI 10.1121/1.413652 PG 12 WC Acoustics; Audiology & Speech-Language Pathology SC Acoustics; Audiology & Speech-Language Pathology GA RH803 UT WOS:A1995RH80300066 ER PT J AU YANG, Y NORRIS, AN COUCHMAN, LS AF YANG, Y NORRIS, AN COUCHMAN, LS TI ACOUSTIC SCATTERING FROM FLUID-LOADED ELASTIC SHELLS - A GAUSSIAN-BEAM APPROACH SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA LA English DT Article ID COMPLEX RAYS; INHOMOGENEOUS-MEDIA C1 RUTGERS STATE UNIV,DEPT MECH & AEROSP ENGN,PISCATAWAY,NJ 08855. USN,RES LAB,WASHINGTON,DC 20375. RP YANG, Y (reprint author), SPA INC,1401 MCCORMICK DR,LANDOVER,MD 20785, USA. RI Norris, Andrew/B-1821-2008 OI Norris, Andrew/0000-0001-7577-3698 NR 19 TC 13 Z9 14 U1 0 U2 3 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0001-4966 J9 J ACOUST SOC AM JI J. Acoust. Soc. Am. PD JUL PY 1995 VL 98 IS 1 BP 611 EP 622 DI 10.1121/1.413655 PG 12 WC Acoustics; Audiology & Speech-Language Pathology SC Acoustics; Audiology & Speech-Language Pathology GA RH803 UT WOS:A1995RH80300067 ER PT J AU BRANDOW, SL DRESSICK, WJ MARRIAN, CRK CHOW, GM CALVERT, JM AF BRANDOW, SL DRESSICK, WJ MARRIAN, CRK CHOW, GM CALVERT, JM TI THE MORPHOLOGY OF ELECTROLESS NI DEPOSITION ON A COLLOIDAL PD(II) CATALYST SO JOURNAL OF THE ELECTROCHEMICAL SOCIETY LA English DT Article ID COPLANAR MOLECULAR ASSEMBLIES; MIXED PDCL2-SNCL2 CATALYSTS; DEEP UV PHOTOCHEMISTRY; METAL-DEPOSITION; MONOLAYER FILMS; METALLIZATION; LITHOGRAPHY; PALLADIUM AB The surface morphology of a surface-bound colloidal Pd(II) catalyst and its effect on the particle size of an electroless Ni deposit is examined. The deposited catalyst is found to have a broad distribution of particle sizes with the largest particles reaching approximately 50 nm in diameter. Catalyst surface coverages as low as 20% are found to be sufficient to initiate complete and homogenous metallization. The distribution of particle sizes for the electroless metal deposit, found to be a function of plating time, is broad with the maximum Ni particle size exceeding 120 nm. Results indicate controlling the size of the bound catalyst is the principal determining factor in controlling the particle size of the electroless deposit. Modification of the surface by depleting the concentration of surface functional groups capable of binding catalyst is used to shift the size distribution of bound catalyst to smaller values. A resulting three- to fourfold reduction in the particle size of the electroless deposit is demonstrated. C1 USN, RES LAB, DIV ELECTR SCI & TECHNOL, WASHINGTON, DC 20375 USA. RP BRANDOW, SL (reprint author), USN, RES LAB, CTR BIOMOLEC SCI & ENGN, WASHINGTON, DC 20375 USA. NR 47 TC 82 Z9 83 U1 2 U2 13 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 65 SOUTH MAIN STREET, PENNINGTON, NJ 08534 USA SN 0013-4651 EI 1945-7111 J9 J ELECTROCHEM SOC JI J. Electrochem. Soc. PD JUL PY 1995 VL 142 IS 7 BP 2233 EP 2243 DI 10.1149/1.2044280 PG 11 WC Electrochemistry; Materials Science, Coatings & Films SC Electrochemistry; Materials Science GA RJ355 UT WOS:A1995RJ35500028 ER PT J AU HANSON, F POIRIER, P AF HANSON, F POIRIER, P TI MULTIPLE-WAVELENGTH OPERATION OF A DIODE-PUMPED ND-YALO3 LASER SO JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS LA English DT Article ID CRYSTAL; YA1O3; ND3+ AB The Q-switched laser performance of a diode-pumped Nd:YAlO3 laser, discretely tunable between 1.064 and 1.099 mu m, is reported. Intracavity frequency doubling yielded outputs of 253 and 144 mW at 532 and 550 nm, and with external conversion to the fourth harmonic, 22.5 and 6.7 mW were obtained at 266 and 275 nm. Polarized absorption curves for the diode pump bands from 780 to 830 nm and spectroscopic measurements of the polarized emission cross sections for the F-4(3/2) --> I-4(11/2) band are presented. RP HANSON, F (reprint author), USN COMMAND,CTR CONTROL & OCEAN SURVEILLANCE,DIV RDT&E,CODE 843,SAN DIEGO,CA 92152, USA. NR 16 TC 17 Z9 17 U1 0 U2 1 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0740-3224 J9 J OPT SOC AM B JI J. Opt. Soc. Am. B-Opt. Phys. PD JUL PY 1995 VL 12 IS 7 BP 1311 EP 1315 DI 10.1364/JOSAB.12.001311 PG 5 WC Optics SC Optics GA RH119 UT WOS:A1995RH11900017 ER PT J AU EDDY, CR SARTWELL, BD AF EDDY, CR SARTWELL, BD TI BORON-NITRIDE THIN-FILM DEPOSITION FROM SOLID BORANE AMMONIA USING AN ELECTRON-CYCLOTRON-RESONANCE MICROWAVE PLASMA SOURCE SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS LA English DT Article ID CHEMICAL-VAPOR-DEPOSITION; N-TRIMETHYLBORAZINE; GROWTH AB An electron cyclotron resonance (ECR) microwave plasma source has been used to deposit boron nitride thin films onto silicon substrates. Borane-ammonia (BH3 . NH3) vapor was introduced in a controlled fashion by congruent thermal sublimation of the non-toxic white crystalline solid and resulted in the deposition of stoichiometric films without the need for additional nitrogen-bearing precursors. Deposition parameters involved a constant microwave power, substrate bias (effective ion energy) ranging from -10 to -100 V de, and substrate temperatures ranging from 350 degrees C to 575 degrees C. The films were characterized with respect to their crystal structure, composition and nature of bonding using a variety of techniques. The crystalline structure and bonding type were weak functions of substrate bias and temperature. At modest bias (-100 V) there was evidence for the existence of the wurtzitic and/or cubic phase, but in general the films were predominantly sp(2) bonded and amorphous. RP EDDY, CR (reprint author), USN,RES LAB,CODE 6675,WASHINGTON,DC 20375, USA. NR 18 TC 12 Z9 12 U1 0 U2 6 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0734-2101 J9 J VAC SCI TECHNOL A JI J. Vac. Sci. Technol. A-Vac. Surf. Films PD JUL-AUG PY 1995 VL 13 IS 4 BP 2018 EP 2022 DI 10.1116/1.579646 PG 5 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA RK461 UT WOS:A1995RK46100032 ER PT J AU CARLOS, WE PROKES, SM AF CARLOS, WE PROKES, SM TI OXYGEN-ASSOCIATED DEFECTS NEAR SI-SIO2 INTERFACES IN POROUS SI AND THEIR ROLE IN PHOTOLUMINESCENCE SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B LA English DT Article; Proceedings Paper CT 22nd Annual Conference on the Physics and Chemistry of Semiconductor Interfaces (PCSI-22) CY JAN 08-12, 1995 CL SCOTTSDALE, AZ SP Amer Vacuum Soc, Electr Mat & Proc Div, USN, Off Naval Res ID SILICON; CENTERS; LUMINESCENCE AB Porous is comprised of nanometer-scale crystallites of Si which, on exposure to the atmosphere, become surrounded by thin oxide layers. It has been proposed that the red room temperature luminescence in this material is primarily due to defects at or near the interface between the crystallites and the thin oxide. We report here the observation of two electron spin resonance (ESR) active oxygen-centric defects; one in nominally unoxidized porous Si and the second in material which has been oxidized for a short period of time. The first is a variant of the thermal donors observed in crystalline Si and the second is the EX center observed in thin layers of SiO2 on crystalline Si. These two centers are thought to have similar cores, a Si vacancy surrounded by four Si-O linkages, with the primary difference in the surrounding lattice (Si vs SiO2). The ESR intensity of the EX center is related to the photoluminescence intensity and may be directly involved in the luminescence process. RP CARLOS, WE (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 23 TC 13 Z9 13 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 JUL-AUG PY 1995 VL 13 IS 4 BP 1653 EP 1656 DI 10.1116/1.587873 PG 4 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Physics, Applied SC Engineering; Science & Technology - Other Topics; Physics GA RP992 UT WOS:A1995RP99200044 ER PT J AU GORDON, DF DESJARDINS, M AF GORDON, DF DESJARDINS, M TI EVALUATION AND SELECTION OF BIASES IN MACHINE LEARNING SO MACHINE LEARNING LA English DT Article DE BIAS; CONCEPT LEARNING AB In this introduction, we define the term bias as it is used in machine learning systems. We motivate the importance of automated methods for evaluating and selecting biases using a framework of bias selection as search in bias and meta-bias spaces. Recent research in the field of machine learning bias is summarized. C1 SRI INT, MENLO PK, CA 94025 USA. RP USN, RES LAB, WASHINGTON, DC 20375 USA. NR 41 TC 35 Z9 36 U1 0 U2 4 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 0885-6125 EI 1573-0565 J9 MACH LEARN JI Mach. Learn. PD JUL-AUG PY 1995 VL 20 IS 1-2 BP 5 EP 22 DI 10.1007/BF00993472 PG 18 WC Computer Science, Artificial Intelligence SC Computer Science GA RX350 UT WOS:A1995RX35000001 ER PT J AU RATH, BB AF RATH, BB TI KINETICS OF NUCLEATION AND GROWTH-PROCESSES SO MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY LA English DT Article; Proceedings Paper CT Indo/US Workshop on Nucleation and Growth in Solids CY MAR 14-16, 1994 CL BANGALORE, INDIA SP USN, Off Naval Res, Indian Inst Sci, Jawahar Lal Nehru Ctr Adv Sci Res DE RECRYSTALLIZATION; GRAIN BOUNDARIES; IRON; NUCLEATION AB The time evolution of the microstructural properties during phase transformations in solids, associated with the phenomena of nucleation and growth, has been modeled to provide an exact description of the kinetics of the process. The process analytical approach uses easily measured metallographic parameters, obtained from a two-dimensional surface examination to provide details on the time dependence of nucleation, nucleation rate, growth rate and interfacial migration. Results of a recrystallization study in deformed single crystals of pure iron have been used to demonstrate the predictions of the model. RP RATH, BB (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 19 TC 2 Z9 3 U1 0 U2 0 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0921-5107 J9 MAT SCI ENG B-SOLID JI Mater. Sci. Eng. B-Solid State Mater. Adv. Technol. PD JUL PY 1995 VL 32 IS 3 BP 101 EP 106 DI 10.1016/0921-5107(95)03001-8 PG 6 WC Materials Science, Multidisciplinary; Physics, Condensed Matter SC Materials Science; Physics GA RK057 UT WOS:A1995RK05700002 ER PT J AU AARONSON, HI SPANOS, G MASAMURA, RA VARDIMAN, RG MOON, DW MENON, ESK HALL, MG AF AARONSON, HI SPANOS, G MASAMURA, RA VARDIMAN, RG MOON, DW MENON, ESK HALL, MG TI SYMPATHETIC NUCLEATION - AN OVERVIEW SO MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY LA English DT Article; Proceedings Paper CT Indo/US Workshop on Nucleation and Growth in Solids CY MAR 14-16, 1994 CL BANGALORE, INDIA SP USN, Off Naval Res, Indian Inst Sci, Jawahar Lal Nehru Ctr Adv Sci Res DE SYMPATHETIC NUCLEATION; LEDGES; TRANSFORMATIONS; STEEL ID DISLOCATION INTERPHASE BOUNDARIES; AUSTENITE GRAIN-BOUNDARIES; FE-C ALLOYS; INTERFACIAL STRUCTURE; DIFFUSIONAL NUCLEATION; PROEUTECTOID FERRITE; ATOMIC MECHANISMS; GROWTH-KINETICS; KINK MOTION; PLATES AB Sympathetic nucleation is defined as the nucleation of a precipitate crystal at an interphase boundary of a crystal of the same phase when these crystals differ in composition from their matrix phase throughout the transformation process. Following a brief history of the discovery and interpretation of this phenomenon, the means of identifying the presence of sympathetic nucleation are described. The morphological configurations most frequently produced by sympathetic nucleation are illustrated. Heterogeneous nucleation theory is then applied to explain sympathetic nucleation. Particular emphasis is placed upon the driving force for sympathetic nucleation, since many of the effects of phase diagram geometry and supersaturation upon sympathetic nucleation can be simply explained upon this basis. C1 USN,POSTGRAD SCH,DEPT MECH ENGN,MAT SCI SECT,MONTEREY,CA 93943. UNIV BIRMINGHAM,SCH MET & MAT,BIRMINGHAM B15 2TT,W MIDLANDS,ENGLAND. RP AARONSON, HI (reprint author), USN,RES LAB,GEO CTR INC,PHYS MET BRANCH,WASHINGTON,DC 20375, USA. NR 70 TC 83 Z9 89 U1 0 U2 17 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0921-5107 J9 MAT SCI ENG B-SOLID JI Mater. Sci. Eng. B-Solid State Mater. Adv. Technol. PD JUL PY 1995 VL 32 IS 3 BP 107 EP 123 DI 10.1016/0921-5107(95)80022-0 PG 17 WC Materials Science, Multidisciplinary; Physics, Condensed Matter SC Materials Science; Physics GA RK057 UT WOS:A1995RK05700003 ER PT J AU YU, HY SANDAY, SC RATH, BB AF YU, HY SANDAY, SC RATH, BB TI ON THE HETEROGENEOUS NUCLEATION OF MARTENSITE SO MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY LA English DT Article; Proceedings Paper CT Indo/US Workshop on Nucleation and Growth in Solids CY MAR 14-16, 1994 CL BANGALORE, INDIA SP USN, Off Naval Res, Indian Inst Sci, Jawahar Lal Nehru Ctr Adv Sci Res DE MARTENSITIC TRANSFORMATION; INCLUSION NEAR INTERFACES; NUCLEATION ID GENERAL MECHANISM; STEEL AB Martensitic nucleation near inhomogeneities is modeled using linear elasticity. The coherent strain energy due to the formation of a martensite embryo decreases when the inhomogeneity is elastically stiffer than the matrix and vice versa. A maximum reduction of 20% in strain energy is calculated for the case when the embryo is formed near a free surface. The results are consistent with the experimental observations of preferential nucleation of martensite at a free surface. A possible explanation for the nature of the ''pre-existing martensite embryo'' in the Kaufman and Cohen model of a nucleation site is also proposed: the dislocation loop in the parent phase is itself the site for the embryo such that it will transform into martensite during transformation. The calculated critical characteristics of this embryo are in good agreement with the model of Chen and Chiao and their experimental results. RP YU, HY (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 23 TC 6 Z9 6 U1 0 U2 2 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0921-5107 J9 MAT SCI ENG B-SOLID JI Mater. Sci. Eng. B-Solid State Mater. Adv. Technol. PD JUL PY 1995 VL 32 IS 3 BP 153 EP 158 DI 10.1016/0921-5107(95)03005-0 PG 6 WC Materials Science, Multidisciplinary; Physics, Condensed Matter SC Materials Science; Physics GA RK057 UT WOS:A1995RK05700007 ER PT J AU MARSH, SP AF MARSH, SP TI ASYMPTOTIC KINETICS OF PHASE COARSENING IN DILUTE SYSTEMS SO MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY LA English DT Article; Proceedings Paper CT Indo/US Workshop on Nucleation and Growth in Solids CY MAR 14-16, 1994 CL BANGALORE, INDIA SP USN, Off Naval Res, Indian Inst Sci, Jawahar Lal Nehru Ctr Adv Sci Res DE DIFFUSION; PHASE TRANSITIONS; OSTWALD RIPENING ID PARTICLE DIFFUSION PROBLEM; NUMERICAL-SIMULATION; OSTWALD; GROWTH AB A detailed discussion is presented of the monopole approximation commonly used to model coarsening systems, whereby each particle is represented by an equivalent point source or sink of solute located at the particle center. This approach applies the inter facial boundary condition only in an average sense for each particle and does not exclude the interior volume of the particles from the field domain. These approximations introduce an error in the derived coarsening rate that scales as phi(1/3) to first order, where phi is the volume fraction of the dispersed phase. This error is larger than the phi(1/2) correction to infinitely dilute systems (phi = 0) that results from analyses of electrostatic monopole interactions. RP MARSH, SP (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 18 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0921-5107 J9 MAT SCI ENG B-SOLID JI Mater. Sci. Eng. B-Solid State Mater. Adv. Technol. PD JUL PY 1995 VL 32 IS 3 BP 159 EP 167 DI 10.1016/0921-5107(95)03006-9 PG 9 WC Materials Science, Multidisciplinary; Physics, Condensed Matter SC Materials Science; Physics GA RK057 UT WOS:A1995RK05700008 ER PT J AU COTELL, CM HORWITZ, JS SPRAGUE, JA AUYEUNG, RCY DANTONIO, P KONNERT, J AF COTELL, CM HORWITZ, JS SPRAGUE, JA AUYEUNG, RCY DANTONIO, P KONNERT, J TI MICROSTRUCTURAL DEVELOPMENT OF THIN-FILMS GROWN BY PULSED-LASER DEPOSITION SO MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY LA English DT Article; Proceedings Paper CT Indo/US Workshop on Nucleation and Growth in Solids CY MAR 14-16, 1994 CL BANGALORE, INDIA SP USN, Off Naval Res, Indian Inst Sci, Jawahar Lal Nehru Ctr Adv Sci Res DE NUCLEATION; PULSED LASER DEPOSITION; SUPERCONDUCTIVITY; ATOMIC FORCE MICROSCOPY AB Pulsed laser deposition (PLD) of thin films involves conditions that differ substantially from those of other vapor deposition techniques and that may be expected to influence film nucleation and growth mechanisms. In order to study the effect of these conditions on these mechanisms, a series of films was deposited using discrete numbers of laser pulses ranging from 1 to 3000. The films were YBa2Cu3O7-delta (YBCO) and Sr0.5Ba0.5TiO(3) (SET) and the substrates were single-crystal (100) MgO and (100) LaAlO3 (LAG), or YBCO films deposited by PLD on (100) MgO substrates. Substrate temperatures ranged from 675 to 875 degrees C. Characterization of the surfaces by atomic force microscopy showed that both SET and YBCO films exhibited an island growth mechanism. For the same number of pulses, SET films were smoother than YBCO films due to the smaller unit cell height of SET. X-ray diffraction and cross-sectional transmission electron microscopy showed that the crystal quality of SET films improved with increasing deposition temperature and was higher for films on LAO substrates than for those on MgO. The LAO substrates were found to be microscopically smoother than MgO substrates. The island growth mechanism observed was similar to that of other vapor deposition techniques and suggests that the high vapor flux and pulsed nature of the PLD flux did not have a substantial effect on the nucleation and growth mechanisms. C1 SACHS FREEMAN ASSOCIATES INC,LANDOVER,MD 20785. USN,RES LAB,STRUCT MATTER LAB,WASHINGTON,DC 20375. RP COTELL, CM (reprint author), USN,RES LAB,SURFACE MODIFICAT BRANCH,CODE 6670,WASHINGTON,DC 20375, USA. NR 8 TC 10 Z9 10 U1 1 U2 2 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0921-5107 J9 MAT SCI ENG B-SOLID JI Mater. Sci. Eng. B-Solid State Mater. Adv. Technol. PD JUL PY 1995 VL 32 IS 3 BP 221 EP 230 DI 10.1016/0921-5107(95)03012-3 PG 10 WC Materials Science, Multidisciplinary; Physics, Condensed Matter SC Materials Science; Physics GA RK057 UT WOS:A1995RK05700014 ER PT J AU PANDE, CS MASUMURA, RA AF PANDE, CS MASUMURA, RA TI GRAIN-BOUNDARY AND GRAIN-SIZE EFFECTS IN HIGH AND LOW TRANSITION-TEMPERATURE SUPERCONDUCTORS SO MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY LA English DT Article; Proceedings Paper CT Indo/US Workshop on Nucleation and Growth in Solids CY MAR 14-16, 1994 CL BANGALORE, INDIA SP USN, Off Naval Res, Indian Inst Sci, Jawahar Lal Nehru Ctr Adv Sci Res DE GRAIN BOUNDARIES; SUPERCONDUCTIVITY MATERIALS; JOSEPHSON EFFECT; THEORY OF ELECTRON TRANSPORT ID CRITICAL CURRENTS; YBA2CU3O7-DELTA; SPECTROSCOPY; BICRYSTALS; VORTICES; MODEL AB The role played by grain boundaries in both low and high transition temperature superconductors is discussed, using dislocation models of a grain boundary. Analytical expressions are obtained which relate critical current capacity with grain size in these materials. The analytical results are in good accord with experiments. RP PANDE, CS (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 32 TC 5 Z9 5 U1 0 U2 3 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0921-5107 J9 MAT SCI ENG B-SOLID JI Mater. Sci. Eng. B-Solid State Mater. Adv. Technol. PD JUL PY 1995 VL 32 IS 3 BP 247 EP 253 DI 10.1016/0921-5107(95)03015-8 PG 7 WC Materials Science, Multidisciplinary; Physics, Condensed Matter SC Materials Science; Physics GA RK057 UT WOS:A1995RK05700017 ER PT J AU PANDE, CS RATH, BB RANGANATHAN, S CHATTOPADHYAY, K AF PANDE, CS RATH, BB RANGANATHAN, S CHATTOPADHYAY, K TI CONTAINING PAPERS PRESENTED AT THE INDO-US WORKSHOP ON NUCLEATION AND GROWTH IN SOLIDS, MARCH 14-16, 1994, BANGALORE, INDIA - PREFACE SO MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY LA English DT Editorial Material C1 INDIAN INST SCI,DEPT MET,CTR ADV STUDY,BANGALORE 560012,KARNATAKA,INDIA. RP PANDE, CS (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. RI Ranganathan, Srinivasa/F-9187-2013 NR 0 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0921-5107 J9 MAT SCI ENG B-SOLID JI Mater. Sci. Eng. B-Solid State Mater. Adv. Technol. PD JUL PY 1995 VL 32 IS 3 BP R9 EP R9 DI 10.1016/0921-5107(95)80021-2 PG 1 WC Materials Science, Multidisciplinary; Physics, Condensed Matter SC Materials Science; Physics GA RK057 UT WOS:A1995RK05700001 ER PT J AU TRENT, LK STEVENS, LT AF TRENT, LK STEVENS, LT TI EVALUATION OF THE NAVY OBESITY TREATMENT PROGRAM SO MILITARY MEDICINE LA English DT Article AB This study evaluated the overall effectiveness of the Navy's three-tiered obesity treatment program and compared effectiveness across the three treatment levels. Height, weight, and body circumference measurements were obtained from 369 program participants at baseline and follow-up (6 weeks, 6 months, 12 months), Results demonstrated a significant and sustained reduction in percent body fat in all three program tiers, but the absolute losses at the end of 12 months were small: -3.7% fat for men, -4.5% fat for women. The level III tier, which employs a multidimensional approach to treatment, was the most effective program, even after differences in enrollees' initial percent body fat were taken into account. Changes in the approach to treatment and development of a supportive, long-term, behaviorally based aftercare program are recommended. RP TRENT, LK (reprint author), USN,HLTH RES CTR,DEPT HLTH SCI & EPIDEMIOL,POB 85122,SAN DIEGO,CA 92186, USA. NR 0 TC 19 Z9 19 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 1995 VL 160 IS 7 BP 326 EP 330 PG 5 WC Medicine, General & Internal SC General & Internal Medicine GA RM138 UT WOS:A1995RM13800003 PM 7659236 ER PT J AU OYOFO, BA ELETR, SH AF OYOFO, BA ELETR, SH TI A SURVEY OF ENTEROPATHOGENS AMONG UNITED-STATES MILITARY PERSONNEL DURING OPERATION-BRIGHT-STAR-94, IN CAIRO, EGYPT SO MILITARY MEDICINE LA English DT Article AB Acute gastroenteritis is a potential cause of substantial morbidity in U.S. military personnel during deployment. This study was conducted to evaluate enteric pathogens associated with diarrhea in a U.S. military population on deployment in Cairo, Egypt, during November 1993. Enteric pathogens found to be associated with cases of diarrhea included: enterotoxigenic Escherichia coli (ETEC), 27% (22% heat-stable [ST], 3% heat-labile [LT], and 2% ST/LT producers); Campylobacter spp., 3%; and Salmonella spp. 3%. Other enteric pathogens, namely Shigella, Aeromonas, Plesiomonas, Vibrio spp., Bacillus cereus, and enteric parasites, were not found in any of the 36 patients. Of the 8 patients who were ETEC-positive, three expressed colonization factor antigens (CFA)/II, and two expressed putative colonization factor antigen (PCF) 0159. All of the latter isolates produced ST. ETEC with different surface protein antigens were found to have surface hydrophobicity in the range of 0.2 M to greater than 2.0 M. Plasmid profiles of the ETEC strains showed no correlation with toxin production. In vitro susceptibility testing of the ETEC strain showed that 32% of the strains were resistant to three or more antimicrobial agents, whereas 24% showed 100% susceptibility. The enteropathogens tested were susceptible to norfloxacin, ciprofloxacin, and nalidixic acid, suggesting that the quinolones might be useful for the treatment of diarrheic patients. RP OYOFO, BA (reprint author), USN,ENTER MICROBIOL BRANCH,MED RES UNIT 3,PSC 452,POB 5000,FPO,AE 09835, USA. NR 0 TC 16 Z9 18 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 1995 VL 160 IS 7 BP 331 EP 334 PG 4 WC Medicine, General & Internal SC General & Internal Medicine GA RM138 UT WOS:A1995RM13800004 PM 7659237 ER PT J AU CRUTCHER, JM BEECHAM, HJ LAXER, MA AF CRUTCHER, JM BEECHAM, HJ LAXER, MA TI SHORT-TERM MEDICAL FIELD MISSIONS IN DEVELOPING-COUNTRIES - A PRACTICAL APPROACH SO MILITARY MEDICINE LA English DT Article RP CRUTCHER, JM (reprint author), USN,MED RES INST,MALARIA PROGRAM,12300 WASHINGTON AVE,ROCKVILLE,MD 20852, USA. NR 0 TC 7 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 JUL PY 1995 VL 160 IS 7 BP 339 EP 343 PG 5 WC Medicine, General & Internal SC General & Internal Medicine GA RM138 UT WOS:A1995RM13800006 PM 7659239 ER PT J AU THOMAS, GB AF THOMAS, GB TI NAMRL WORKS TO VERIFY RESEARCH IN ENHANCED HEARING PROTECTION SO MODERN PLASTICS LA English DT Letter C1 USN,AEROSP MED RES LAB,PENSACOLA,FL. NR 1 TC 0 Z9 0 U1 0 U2 0 PU MCGRAW HILL INC PI NEW YORK PA 1221 AVENUE OF THE AMERICAS, NEW YORK, NY 10020 SN 0026-8275 J9 MOD PLAST JI Mod. Plast. PD JUL PY 1995 VL 72 IS 7 BP 10 EP 10 PG 1 WC Materials Science, Multidisciplinary; Polymer Science SC Materials Science; Polymer Science GA RH483 UT WOS:A1995RH48300001 ER PT J AU NUSS, WA AF NUSS, WA TI USE OF MULTIQUADRIC INTERPOLATION FOR METEOROLOGICAL OBJECTIVE ANALYSIS - REPLY SO MONTHLY WEATHER REVIEW LA English DT Note RP NUSS, WA (reprint author), USN,POSTGRAD SCH,DEPT METEOROL,MONTEREY,CA 93943, USA. NR 3 TC 1 Z9 1 U1 0 U2 0 PU AMER METEOROLOGICAL SOC PI BOSTON PA 45 BEACON ST, BOSTON, MA 02108-3693 SN 0027-0644 J9 MON WEATHER REV JI Mon. Weather Rev. PD JUL PY 1995 VL 123 IS 7 BP 2257 EP 2259 DI 10.1175/1520-0493(1995)123<2257:R>2.0.CO;2 PG 3 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA RG135 UT WOS:A1995RG13500020 ER PT J AU WILLIAMS, LM FIREBAUGH, MS HOOD, JT HUCHTING, GA ROBERTS, M FELTON, LA WAGNER, GFA AF WILLIAMS, LM FIREBAUGH, MS HOOD, JT HUCHTING, GA ROBERTS, M FELTON, LA WAGNER, GFA TI GANG-OF-6 - DISCUSSION SO NAVAL ENGINEERS JOURNAL LA English DT Discussion RP WILLIAMS, LM (reprint author), USN,WASHINGTON,DC, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC NAVAL ENG INC PI ALEXANDRIA PA 1452 DUKE STREET, ALEXANDRIA, VA 22314-3458 SN 0028-1425 J9 NAV ENG J JI Nav. Eng. J. PD JUL PY 1995 VL 107 IS 4 BP 57 EP 81 PG 25 WC Engineering, Marine; Engineering, Civil; Oceanography SC Engineering; Oceanography GA RT312 UT WOS:A1995RT31200005 ER PT J AU EARNER, WA AF EARNER, WA TI BANQUET ADDRESS SO NAVAL ENGINEERS JOURNAL LA English DT Editorial Material RP EARNER, WA (reprint author), USN,NAVAL OPERAT LOGIST,WASHINGTON,DC, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC NAVAL ENG INC PI ALEXANDRIA PA 1452 DUKE STREET, ALEXANDRIA, VA 22314-3458 SN 0028-1425 J9 NAV ENG J JI Nav. Eng. J. PD JUL PY 1995 VL 107 IS 4 BP 83 EP 86 PG 4 WC Engineering, Marine; Engineering, Civil; Oceanography SC Engineering; Oceanography GA RT312 UT WOS:A1995RT31200006 ER PT J AU BOWEN, D CHANG, PM VOSS, DL AF BOWEN, D CHANG, PM VOSS, DL TI WEAPONS STRUCTURAL TEST FIRING ABOARD THE USS-ARLEIGH-BURKE SO NAVAL ENGINEERS JOURNAL LA English DT Note RP BOWEN, D (reprint author), USN,SEA SYST COMMAND,WASHINGTON,DC 20350, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC NAVAL ENG INC PI ALEXANDRIA PA 1452 DUKE STREET, ALEXANDRIA, VA 22314-3458 SN 0028-1425 J9 NAV ENG J JI Nav. Eng. J. PD JUL PY 1995 VL 107 IS 4 BP 105 EP 106 PG 2 WC Engineering, Marine; Engineering, Civil; Oceanography SC Engineering; Oceanography GA RT312 UT WOS:A1995RT31200013 ER PT J AU ALBANESE, J AF ALBANESE, J TI STANDARD FLEX DISTRIBUTED ARCHITECTURE COMBAT SYSTEM - COMMENTS SO NAVAL ENGINEERS JOURNAL LA English DT Note RP ALBANESE, J (reprint author), USN,SEA SYST COMMAND,WASHINGTON,DC, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC NAVAL ENG INC PI ALEXANDRIA PA 1452 DUKE STREET, ALEXANDRIA, VA 22314-3458 SN 0028-1425 J9 NAV ENG J JI Nav. Eng. J. PD JUL PY 1995 VL 107 IS 4 BP 110 EP 110 PG 1 WC Engineering, Marine; Engineering, Civil; Oceanography SC Engineering; Oceanography GA RT312 UT WOS:A1995RT31200017 ER PT J AU DONNELLY, W AF DONNELLY, W TI STANDARD FLEX DISTRIBUTED ARCHITECTURE COMBAT SYSTEM - COMMENTS SO NAVAL ENGINEERS JOURNAL LA English DT Note RP DONNELLY, W (reprint author), USN,SEA SYST COMMAND,WASHINGTON,DC, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC NAVAL ENG INC PI ALEXANDRIA PA 1452 DUKE STREET, ALEXANDRIA, VA 22314-3458 SN 0028-1425 J9 NAV ENG J JI Nav. Eng. J. PD JUL PY 1995 VL 107 IS 4 BP 111 EP 112 PG 2 WC Engineering, Marine; Engineering, Civil; Oceanography SC Engineering; Oceanography GA RT312 UT WOS:A1995RT31200019 ER PT J AU EVERSTINE, GC BROOKS, EW AF EVERSTINE, GC BROOKS, EW TI FINITE-ELEMENT ANALYSIS OF THE QUARTER SCALE ADVANCED DOUBLE-HULL DESIGN - COMMENTS SO NAVAL ENGINEERS JOURNAL LA English DT Note RP EVERSTINE, GC (reprint author), USN,CTR SURFACE WARFARE,WASHINGTON,DC 20350, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC NAVAL ENG INC PI ALEXANDRIA PA 1452 DUKE STREET, ALEXANDRIA, VA 22314-3458 SN 0028-1425 J9 NAV ENG J JI Nav. Eng. J. PD JUL PY 1995 VL 107 IS 4 BP 152 EP 152 PG 1 WC Engineering, Marine; Engineering, Civil; Oceanography SC Engineering; Oceanography GA RT312 UT WOS:A1995RT31200048 ER PT J AU EAGLE, A PATTISON, J AF EAGLE, A PATTISON, J TI DETERMINATION OF EXTREME SEAS ENCOUNTERED BY OPERATIONAL SHIPS - COMMENTS SO NAVAL ENGINEERS JOURNAL LA English DT Note RP EAGLE, A (reprint author), USN,SEA SYST COMMAND,WASHINGTON,DC 20350, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC NAVAL ENG INC PI ALEXANDRIA PA 1452 DUKE STREET, ALEXANDRIA, VA 22314-3458 SN 0028-1425 J9 NAV ENG J JI Nav. Eng. J. PD JUL PY 1995 VL 107 IS 4 BP 153 EP 154 PG 2 WC Engineering, Marine; Engineering, Civil; Oceanography SC Engineering; Oceanography GA RT312 UT WOS:A1995RT31200050 ER PT J AU SILVER, A AF SILVER, A TI DETERMINATION OF EXTREME SEAS ENCOUNTERED BY OPERATIONAL SHIPS - COMMENTS SO NAVAL ENGINEERS JOURNAL LA English DT Note RP SILVER, A (reprint author), USN,CTR SURFACE WARFARE,WASHINGTON,DC 20350, USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU AMER SOC NAVAL ENG INC PI ALEXANDRIA PA 1452 DUKE STREET, ALEXANDRIA, VA 22314-3458 SN 0028-1425 J9 NAV ENG J JI Nav. Eng. J. PD JUL PY 1995 VL 107 IS 4 BP 154 EP 155 PG 2 WC Engineering, Marine; Engineering, Civil; Oceanography SC Engineering; Oceanography GA RT312 UT WOS:A1995RT31200051 ER PT J AU TOLL, R AF TOLL, R TI DETERMINATION OF EXTREME SEAS ENCOUNTERED BY OPERATIONAL SHIPS - COMMENTS SO NAVAL ENGINEERS JOURNAL LA English DT Note RP TOLL, R (reprint author), USN,OFF OCEANOGRAPHER,WASHINGTON,DC 20350, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC NAVAL ENG INC PI ALEXANDRIA PA 1452 DUKE STREET, ALEXANDRIA, VA 22314-3458 SN 0028-1425 J9 NAV ENG J JI Nav. Eng. J. PD JUL PY 1995 VL 107 IS 4 BP 155 EP 156 PG 2 WC Engineering, Marine; Engineering, Civil; Oceanography SC Engineering; Oceanography GA RT312 UT WOS:A1995RT31200052 ER PT J AU MAHONEY, DP AF MAHONEY, DP TI A SURFACE COMBATANT FOR THE 21ST-CENTURY - THE DDG-51 FLIGHT IIA - COMMENTS SO NAVAL ENGINEERS JOURNAL LA English DT Note RP MAHONEY, DP (reprint author), USN,SC 21,WASHINGTON,DC 20350, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC NAVAL ENG INC PI ALEXANDRIA PA 1452 DUKE STREET, ALEXANDRIA, VA 22314-3458 SN 0028-1425 J9 NAV ENG J JI Nav. Eng. J. PD JUL PY 1995 VL 107 IS 4 BP 158 EP 159 PG 2 WC Engineering, Marine; Engineering, Civil; Oceanography SC Engineering; Oceanography GA RT312 UT WOS:A1995RT31200054 ER PT J AU HARTIGAN, JD AF HARTIGAN, JD TI LASER-BASED 3D VOLUMETRIC DISPLAY SYSTEM (THE IMPROVED 2ND-GENERATION) - COMMENTS SO NAVAL ENGINEERS JOURNAL LA English DT Note RP HARTIGAN, JD (reprint author), USN,SPACE & WARFARE SYST COMMAND,WASHINGTON,DC 20350, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC NAVAL ENG INC PI ALEXANDRIA PA 1452 DUKE STREET, ALEXANDRIA, VA 22314-3458 SN 0028-1425 J9 NAV ENG J JI Nav. Eng. J. PD JUL PY 1995 VL 107 IS 4 BP 161 EP 162 PG 2 WC Engineering, Marine; Engineering, Civil; Oceanography SC Engineering; Oceanography GA RT312 UT WOS:A1995RT31200057 ER PT J AU YEE, JH AF YEE, JH TI LASER-BASED 3D VOLUMETRIC DISPLAY SYSTEM (THE IMPROVED 2ND-GENERATION) - COMMENTS SO NAVAL ENGINEERS JOURNAL LA English DT Note RP YEE, JH (reprint author), USN,CTR SURFACE WARFARE,WASHINGTON,DC 20350, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC NAVAL ENG INC PI ALEXANDRIA PA 1452 DUKE STREET, ALEXANDRIA, VA 22314-3458 SN 0028-1425 J9 NAV ENG J JI Nav. Eng. J. PD JUL PY 1995 VL 107 IS 4 BP 162 EP 163 PG 2 WC Engineering, Marine; Engineering, Civil; Oceanography SC Engineering; Oceanography GA RT312 UT WOS:A1995RT31200058 ER PT J AU SAMPSON, H AF SAMPSON, H TI AUTOMATED OPPOSING FORCES FOR TRAINING SIMULATIONS - COMMENTS SO NAVAL ENGINEERS JOURNAL LA English DT Note RP SAMPSON, H (reprint author), USN,WASHINGTON,DC 20350, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC NAVAL ENG INC PI ALEXANDRIA PA 1452 DUKE STREET, ALEXANDRIA, VA 22314-3458 SN 0028-1425 J9 NAV ENG J JI Nav. Eng. J. PD JUL PY 1995 VL 107 IS 4 BP 164 EP 164 PG 1 WC Engineering, Marine; Engineering, Civil; Oceanography SC Engineering; Oceanography GA RT312 UT WOS:A1995RT31200060 ER PT J AU FIREMAN, H FOWLER, J MCINTIRE, J WILKINS, J AF FIREMAN, H FOWLER, J MCINTIRE, J WILKINS, J TI LPD-17 - IN THE MIDST OF REFORM - REPLY SO NAVAL ENGINEERS JOURNAL LA English DT Note RP FIREMAN, H (reprint author), USN,WASHINGTON,DC 20350, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC NAVAL ENG INC PI ALEXANDRIA PA 1452 DUKE STREET, ALEXANDRIA, VA 22314-3458 SN 0028-1425 J9 NAV ENG J JI Nav. Eng. J. PD JUL PY 1995 VL 107 IS 4 BP 168 EP 168 PG 1 WC Engineering, Marine; Engineering, Civil; Oceanography SC Engineering; Oceanography GA RT312 UT WOS:A1995RT31200064 ER PT J AU PESILE, C HESS, L TUTTLE, J AF PESILE, C HESS, L TUTTLE, J TI BREAKING THE ICE OF ACQUISITION REFORM - REPLY SO NAVAL ENGINEERS JOURNAL LA English DT Note RP PESILE, C (reprint author), USN,WASHINGTON,DC 20350, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC NAVAL ENG INC PI ALEXANDRIA PA 1452 DUKE STREET, ALEXANDRIA, VA 22314-3458 SN 0028-1425 J9 NAV ENG J JI Nav. Eng. J. PD JUL PY 1995 VL 107 IS 4 BP 177 EP 178 PG 2 WC Engineering, Marine; Engineering, Civil; Oceanography SC Engineering; Oceanography GA RT312 UT WOS:A1995RT31200070 ER PT J AU BROWN, LM DENALE, R AF BROWN, LM DENALE, R TI COMPUTER-ASSISTED WELD EVALUATION SO NAVAL ENGINEERS JOURNAL LA English DT Article AB The Naval Surface Warfare Center has developed a knowledge-based nondestructive evaluation (KBNDE) system to automate the interpretation of ultrasonic weld inspections. The designed software prototype, KBNDE Version 1.0, operates on IBM(R), PS/2(R) or AT compatible computers operating under Microsoft(R) Windows(TM) 3.1. The system automates the following functions: 1) examination of the recorded UT data to determine the location of potential discontinuities in the material, 2) 3-dimensional sizing and classification of the disclosed discontinuities, and 3) application of an acceptance criteria to the discontinuities. The KBNDE system employs time-of-flight-diffraction ultrasonics to locate and size the discontinuities in the weld metal, and a 3-layer back-propagation artificial neural network to classify the discontinuities as being planar or volumetric. In addition, advanced algorithms are used to determine whether the discontinuities in the weld material are acceptable or rejectable, based on an automated implementation of NAVSEA 0900-LP-006-3010. The system has been demonstrated on flush ground welds and on various laboratory specimens. RP BROWN, LM (reprint author), USN,CTR SURFACE WARFARE,DIV CARDEROCK,WELDING BRANCH,ANNAPOLIS,MD 21402, USA. NR 0 TC 1 Z9 1 U1 0 U2 1 PU AMER SOC NAVAL ENG INC PI ALEXANDRIA PA 1452 DUKE STREET, ALEXANDRIA, VA 22314-3458 SN 0028-1425 J9 NAV ENG J JI Nav. Eng. J. PD JUL PY 1995 VL 107 IS 4 BP 179 EP 190 PG 12 WC Engineering, Marine; Engineering, Civil; Oceanography SC Engineering; Oceanography GA RT312 UT WOS:A1995RT31200071 ER PT J AU SOLKA, JL PERRY, JC POELLINGER, BR ROGERS, GW AF SOLKA, JL PERRY, JC POELLINGER, BR ROGERS, GW TI FAST COMPUTATION OF OPTIMAL PATHS USING A PARALLEL DIJKSTRA ALGORITHM WITH EMBEDDED CONSTRAINTS SO NEUROCOMPUTING LA English DT Article DE ROUTE PLANNING; ARTIFICIAL NEURAL SYSTEM; OPTIMAL PATH; TURNING CONSTRAINTS ID OPTIMIZATION AB We have developed a new optimal path algorithm in which the paths are subjected to turning constraints. The restriction which we have incorporated is the next link in the path must not make an angle exceeding 45 degrees in magnitude with the preceeding link. This algorithm has a natural implementation as an artificial neural system with either synchronous or asynchronous weight updating, and as an automata executing on a massively parallel array processor. At a given step in the path solution process our path planning artificial neural system keeps track of all constrained optimal paths flowing into the nodes of the network. This new algorithm has applications to any path planning problem where the vehicle traveling the path is subject to a limited turning capability. The ability of the network to solve for constrained paths is illustrated with both a graph theoretic example and a scenario involving an unmanned vehicle that must travel a constrained path through a real terrain area containing artificially generated keep out zones. C1 USN,RES LAB,HIGH ASSURANCE COMP SYST BRANCH,WASHINGTON,DC 20375. RP SOLKA, JL (reprint author), USN,CTR SURFACE WARFARE,DAHLGREN DIV,DEPT SYST RES & TECHNOL,ADV COMPUTAT TECHNOL GRP,B10,DAHLGREN,VA 22448, USA. NR 11 TC 11 Z9 11 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0925-2312 J9 NEUROCOMPUTING JI Neurocomputing PD JUL PY 1995 VL 8 IS 2 BP 195 EP 212 DI 10.1016/0925-2312(94)00018-N PG 18 WC Computer Science, Artificial Intelligence SC Computer Science GA RK065 UT WOS:A1995RK06500007 ER PT J AU DAVIS, AJ WAH, RM KOHLER, CL YOUNGER, JB VISSCHER, RD SOULES, MR AF DAVIS, AJ WAH, RM KOHLER, CL YOUNGER, JB VISSCHER, RD SOULES, MR TI IDEAL RESIDENCY CURRICULUM IN REPRODUCTIVE ENDOCRINOLOGY AND INFERTILITY SO OBSTETRICS AND GYNECOLOGY LA English DT Article AB Objective: Knowledge in reproductive endocrinology and infertility is fundamental to the delivery of quality women's health care. In 1991, the American Fertility Society formed a resident education committee to gather data on the current status of reproductive endocrinology and infertility training and develop an ideal curriculum. Methods: Program directors and reproductive endocrinology and infertility faculty from 288 residencies in obstetrics and gynecology were surveyed about training in reproductive endocrinology and infertility; 257 (89%) of the program directors (survey I) and 203 (82%) of the reproductive endocrinology and infertility faculty (survey II) responded. An ideal curriculum has been developed from consensus discussions, review of survey data, and polling of experienced educators. The curriculum was reviewed and approved by the board of directors of both the Society for Reproductive Endocrinologists and the American Fertility Society. Results: The curriculum is divided into subject matter and therapeutics, which are prioritized into three levels of knowledge: critical core curriculum, less critical material, and material with which residents should have familiarity and general knowledge. In addition, other recommendations and suggestions are made regarding the number of rotations, duration of rotations, and teaching methods. Conclusion: The ideal curriculum may serve as a guide to assist program directors in the formulation of the most effective residency training in reproductive endocrinology and infertility. The curriculum can help prioritize what should be taught and where an emphasis can be placed. There is not enough time or resources to teach residents all aspects of reproductive endocrinology and infertility. C1 USN,MED CTR,DEPT OBSTET & GYNECOL,DIV REPROD ENDOCRINOL,SAN DIEGO,CA 92152. UNIV CALIF SAN DIEGO,SCH MED,SAN DIEGO,CA 92103. UNIV ALABAMA,SCH PUBL HLTH,DEPT HLTH BEHAV,BIRMINGHAM,AL 35294. UNIV ALABAMA,SCH MED,DEPT OBSTET & GYNECOL,DIV REPROD ENDOCRINOL,BIRMINGHAM,AL 35294. UNIV WASHINGTON,SCH MED,DEPT OBSTET & GYNECOL,DIV REPROD ENDOCRINOL,SEATTLE,WA 98195. AMER FERTIL SOC,BIRMINGHAM,AL. RP DAVIS, AJ (reprint author), TUFTS UNIV,SCH MED,DEPT OBSTET & GYNECOL,DIV REPROD ENDOCRINOL,BOSTON,MA 02111, USA. NR 0 TC 2 Z9 2 U1 0 U2 0 PU ELSEVIER SCIENCE PUBL CO INC PI NEW YORK PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 SN 0029-7844 J9 OBSTET GYNECOL JI Obstet. Gynecol. PD JUL PY 1995 VL 86 IS 1 BP 132 EP 136 DI 10.1016/0029-7844(95)00071-X PG 5 WC Obstetrics & Gynecology SC Obstetrics & Gynecology GA RE544 UT WOS:A1995RE54400025 PM 7784008 ER PT J AU ROYER, MA MEIERS, JC AF ROYER, MA MEIERS, JC TI SHEAR BOND STRENGTH OF RESIN TO ACID PUMICE-MICROABRADED ENAMEL SO OPERATIVE DENTISTRY LA English DT Article ID BOVINE ENAMEL AB The effect of enamel microabrasion techniques consisting of either 18% hydrochloric acid in pumice or a commercially available abrasive/10% hydrochloric acid mixture, PREMA, on composite/enamel shear bond strengths was investigated. Sixty extracted third molars had the bonding surface flattened and were divided into six treatment groups (n=10) with the enamel treated prior to bonding as follows: Group 1-untreated; Group 2-37% phosphoric acid etched for 30 seconds; Group 3-18% hydrochloric acid/pumice pumice mixture applied for five 20-second treatments; Group 4-similar to Group 3 with additional 37% phosphoric acid etch; Group 5-treated with PREMA compound applied for five 20-second treatments; Group 6-similar to Group 5 treatment with additional 37% phosphoric acid. Herculite XR composite resin was then bonded to all samples using a VLC unit. Samples were tested in shear, and fractured enamel surfaces were evaluated using light microscopy to determine the enamel-to-resin failures. Resin bond strengths to microabraded and H3PO4-etched enamel were similar to bond strengths of untreated H3PO4-etched enamel and were significantly better than bond strengths to PREMA-treated or unetched enamel. RP ROYER, MA (reprint author), USN,NATL NAVAL DENT CTR,SCH DENT,BETHESDA,MD 20814, USA. NR 10 TC 3 Z9 3 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 1995 VL 20 IS 4 BP 155 EP 159 PG 5 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA RG162 UT WOS:A1995RG16200007 PM 8700784 ER PT J AU WILLARD, CC FOSS, RD HOBBS, TJ AUCLAIR, PL RILEY, F AF WILLARD, CC FOSS, RD HOBBS, TJ AUCLAIR, PL RILEY, F TI PRIMARY ANAPLASTIC LARGE-CELL (KI-1 POSITIVE) LYMPHOMA OF THE MANDIBLE AS THE INITIAL MANIFESTATION OF ACQUIRED-IMMUNODEFICIENCY-SYNDROME IN A PEDIATRIC-PATIENT SO ORAL SURGERY ORAL MEDICINE ORAL PATHOLOGY ORAL RADIOLOGY AND ENDODONTICS LA English DT Article ID CLINICAL-FEATURES; AIDS AB A case of an anaplastic large-cell lymphoma with Ki-1 immunobistochemical reactivity presenting in the mandible of a 12-year-old girl with Waiter Reed Stage 6 human immunodeficiency virus infection is described. C1 USN,NATL DENT CTR,DEPT ORAL PATHOL,BETHESDA,MD. USA,DENT ACTIV,FT RILEY,KS. RP WILLARD, CC (reprint author), ARMED FORCES INST PATHOL,DEPT ORAL PATHOL,WASHINGTON,DC 20306, USA. NR 14 TC 12 Z9 12 U1 0 U2 0 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 1079-2104 J9 ORAL SURG ORAL MED O JI Oral Surg. Oral Med. Oral Pathol. Oral Radiol. Endod. PD JUL PY 1995 VL 80 IS 1 BP 67 EP 70 DI 10.1016/S1079-2104(95)80018-2 PG 4 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA RJ493 UT WOS:A1995RJ49300017 PM 7552865 ER PT J AU KEYSER, JS DIAZORDAZ, E SAMSON, MJ KARTUSH, JM AF KEYSER, JS DIAZORDAZ, E SAMSON, MJ KARTUSH, JM TI USE OF INTRAOPERATIVE NEUROMONITORING TO PREVENT ORBITAL COMPLICATIONS IN ETHMOID SINUS SURGERY SO OTOLARYNGOLOGY-HEAD AND NECK SURGERY LA English DT Article; Proceedings Paper CT Annual Meeting of the American-Academy-of-Otolaryngology-Head-and-Neck-Surgery CY SEP 18-21, 1994 CL SAN DIEGO, CA SP Amer Acad Otolaryngol Head & Neck Surg ID ENDOSCOPIC INTRANASAL ETHMOIDECTOMY AB Orbital injury is one of the most serious complications in sinus surgery. Although these injuries are generally infrequent, there is a considerable increased risk for orbital complications during procedures in which anatomic landmarks are distorted because of the severity of disease or prior surgery. Currently there are no methods to detect early defects in the lamina papyracea or to prevent continued resection until orbital fat or periorbita is seen. Thirteen New Zealand white rabbits were studied by use of a nerve monitor to identify the periorbita and orbital fat in surgically created lamina defects. Evoked potentials were measured at the medial orbit when the lamina papyracea, periorbita, and orbital fat were stimulated at current intensities ranging from 0.25 to 1.00 mA. Stimulation of the lamina at 0.8 and 1.0 mA resulted in response amplitudes that were significantly lower compared with those of periorbita stimulation (means at I mA, 38.26 mu V vs. 117.85 mu V; p < 0.01). Stimulation of the orbital fat also resulted in higher potentials (mean, 59.47 mu V) than those of the lamina papyracea (mean, 38.26 mu V) but did not reach statistical significance. The statistically significant difference in response amplitudes between the lamina papyracea and the periorbita indicate that intraoperative monitoring may be useful in identifying early lamina defects, which could in turn reduce the risk of orbital injury during sinus surgery. C1 MICHIGAN EAR INST,FARMINGTON HILLS,MI. RP KEYSER, JS (reprint author), USN,MED CTR,DEPT OTOLARYNGOL HEAD & NECK SURG,PORTSMOUTH,VA 23708, USA. NR 11 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 0194-5998 J9 OTOLARYNG HEAD NECK JI Otolaryngol. Head Neck Surg. PD JUL PY 1995 VL 113 IS 1 BP 99 EP 103 DI 10.1016/S0194-5998(95)70151-6 PG 5 WC Otorhinolaryngology; Surgery SC Otorhinolaryngology; Surgery GA RH255 UT WOS:A1995RH25500015 PM 7603729 ER PT J AU GIRGIS, NI SULTAN, Y HAMMAD, O FARID, Z AF GIRGIS, NI SULTAN, Y HAMMAD, O FARID, Z TI COMPARISON OF THE EFFICACY, SAFETY AND COST OF CEFIXIME, CEFTRIAXONE AND AZTREONAM IN THE TREATMENT OF MULTIDRUG-RESISTANT SALMONELLA-TYPHI SEPTICEMIA IN CHILDREN SO PEDIATRIC INFECTIOUS DISEASE JOURNAL LA English DT Article DE ENTERIC FEVER; THERAPY; MULTIDRUG-RESISTANT AB An increase in the incidence of Salmonella typhi strains resistant to chloramphenicol, ampicillin and trimethoprim-sulfamethoxazole causing enteric fever in Egyptian children stimulated the evaluation of alternative drugs. Children with positive blood cultures were treated with cefixime, ceftriaxone or aztreonam, and the efficacy, safety and cost of these regimens were evaluated and compared. Cefixime (7.5 mg/kg) was given orally twice daily to 50 children for 14 days, ceftriaxone (50 to 70 mg/kg) was given im once daily for 5 days to 43 children and aztreonam (50 to 70 mg/kg) was given im every 8 hours for 7 days to 31 children. Children in the 3 groups were comparable with regard to age, sex, duration and severity of illness before admission. All children were cured. A significant difference (P < 0.05) in duration of treatment before becoming afebrile seemed to favor ceftriaxone (3.9 days) over aztreonam (5.5 days) and cefixime (5.3 days), During the 4-week follow-up period relapses occurred in 3 (6%) children in the cefixime group, in 2 (5%) in the ceftriaxone group and in 2 (6%) in the aztreonam group. Safety and efficacy were comparable for all 3 drugs. Ceftriaxone was most cost-effective on an inpatient basis, because of a more rapid clinical cure, and cefixime was the most cost-effective on an outpatient basis, because of drug cost. C1 ABBASSIA FEVER HOSP,CAIRO,EGYPT. RP GIRGIS, NI (reprint author), USN,MED RES UNIT 3,RES PUBLICAT BRANCH,PSC 452,BOX 5000,CODE 101F,FPO,AE 09835, USA. NR 8 TC 26 Z9 28 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 JUL PY 1995 VL 14 IS 7 BP 603 EP 605 DI 10.1097/00006454-199507000-00010 PG 3 WC Immunology; Infectious Diseases; Pediatrics SC Immunology; Infectious Diseases; Pediatrics GA RH936 UT WOS:A1995RH93600010 PM 7567290 ER PT J AU WHITLOCK, RR WARK, JS AF WHITLOCK, RR WARK, JS TI ORTHOGONAL STRAINS AND ONSET OF PLASTICITY IN SHOCKED LIF CRYSTALS SO PHYSICAL REVIEW B LA English DT Note ID X-RAY-DIFFRACTION; ELASTIC PRECURSOR DECAY; WAVE COMPRESSION C1 UNIV OXFORD,DEPT PHYS,CLARENDON LAB,OXFORD OX1 3PU,ENGLAND. RP WHITLOCK, RR (reprint author), USN,RES LAB,DYNAM SOLIDS BRANCH,WASHINGTON,DC 20375, USA. NR 22 TC 26 Z9 26 U1 0 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 JUL 1 PY 1995 VL 52 IS 1 BP 8 EP 11 DI 10.1103/PhysRevB.52.8 PG 4 WC Physics, Condensed Matter SC Physics GA RH930 UT WOS:A1995RH93000003 ER PT J AU CULLEN, JR AF CULLEN, JR TI PAIR MODEL OF MAGNETOSTRICTION FOR HEXAGONAL CLOSE-PACKED CRYSTALS SO PHYSICAL REVIEW B LA English DT Note RP CULLEN, JR (reprint author), USN,CTR SURFACE WARFARE,DIV CARDEROCK,SILVER SPRING,MD 20903, USA. NR 10 TC 1 Z9 1 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD JUL 1 PY 1995 VL 52 IS 1 BP 57 EP 60 DI 10.1103/PhysRevB.52.57 PG 4 WC Physics, Condensed Matter SC Physics GA RH930 UT WOS:A1995RH93000016 ER PT J AU SINGH, DJ AF SINGH, DJ TI RELATIONSHIP OF SR2RUO4 TO THE SUPERCONDUCTING LAYERED CUPRATES SO PHYSICAL REVIEW B LA English DT Article ID HIGH-TC SUPERCONDUCTIVITY; NORMAL-STATE AB The properties of Sr2RuO4 are discussed in relation to the high-critical-temperature cuprate superconductors. The discussion is based on local-density-approximation band structure and phonon calculations. The electronic structure is highly anisotropic. Three hybridized Ru 4d-plane O p bands cross the Fermi energy, yielding cylindrical sheets of Fermi surface. Two of these are electronlike sheets around Gamma, while the third is an X-centered hole surface. The electronlike sheets change topology as the energy is raised leading to Van Hove singularities in close proximity to the Fermi energy. In general, the electronic properties are related to those of the cuprates, with the exception that Coulomb correlations are expected to be much less significant due to the larger bandwidth and smaller on-site energy. Sr2RuO4 is expected to be a very useful reference material for interpreting experiments on the cuprate superconductors. RP SINGH, DJ (reprint author), USN,RES LAB,COMPLEX SYST THEORY BRANCH,WASHINGTON,DC 20375, USA. RI Singh, David/I-2416-2012 NR 22 TC 254 Z9 254 U1 2 U2 21 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 JUL 1 PY 1995 VL 52 IS 2 BP 1358 EP 1361 DI 10.1103/PhysRevB.52.1358 PG 4 WC Physics, Condensed Matter SC Physics GA RJ711 UT WOS:A1995RJ71100089 ER PT J AU ALBANO, AM RAPP, PE PASSAMANTE, A AF ALBANO, AM RAPP, PE PASSAMANTE, A TI KOLMOGOROV-SMIRNOV TEST DISTINGUISHES ATTRACTORS WITH SIMILAR DIMENSIONS SO PHYSICAL REVIEW E LA English DT Article ID RELATIVE ROTATION RATES; TIME-SERIES; LYAPUNOV EXPONENTS; STRANGE ATTRACTORS; CHAOTIC ATTRACTORS; SYSTEMS AB Recent advances in nonlinear dynamics have led to more informative characterizations of complex signals making it possible to probe correlations in data to which traditional linear statistical and spectral analyses were not sensitive. Many of these new tools require detailed knowledge of small scale structures of the attractor; knowledge that can be acquired only from relatively large amounts of precise data that are not contaminated by noise-not the kind of data one usually obtains from experiments. There is a need for tools that can take advantage of ''coarse-grained'' information, but which nevertheless remain sensitive to higher-order correlations in the data. We propose that the correlation integral, now much used as an intermediate step in the calculation of dimensions and entropies, can be used as such a tool and that the Kolmogorov-Smirnov test is a convenient and reliable way of comparing correlation integrals quantitatively. This procedure makes it possible to distinguish between attractors with similar dimensions. For example, it can unambiguously distinguish (p < 10(-8)) the Lorenz, Rossler, and Mackey-Glass (delay = 17) attractors whose correlation dimensions are within 1% of each other. We also show that the Kolmogorov-Smirnov test is a convenient way of comparing a data set with its surrogates. C1 MED COLL PENN,DEPT PHYSIOL,PHILADELPHIA,PA 19129. USN,CTR AIR WARFARE,DIV AIRCRAFT,WARMINSTER,PA 18974. RP ALBANO, AM (reprint author), BRYN MAWR COLL,DEPT PHYS,BRYN MAWR,PA 19010, USA. NR 49 TC 24 Z9 24 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1063-651X J9 PHYS REV E JI Phys. Rev. E PD JUL PY 1995 VL 52 IS 1 BP 196 EP 206 DI 10.1103/PhysRevE.52.196 PN A PG 11 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA RK545 UT WOS:A1995RK54500030 ER PT J AU INCHIOSA, ME BULSARA, AR AF INCHIOSA, ME BULSARA, AR TI NONLINEAR DYNAMIC ELEMENTS WITH NOISY SINUSOIDAL FORCING - ENHANCING RESPONSE VIA NONLINEAR COUPLING SO PHYSICAL REVIEW E LA English DT Article ID SINGLE EFFECTIVE NEURON; STOCHASTIC RESONANCE; ADIABATIC ELIMINATION; SLAVING PRINCIPLE; BISTABLE SYSTEMS; INFORMATION; MODEL AB We consider a network of nonlinear dynamic elements with nonlinear, global coupling, subject to noise and a time-periodic signal. The system response, characterized by its signal-to-noise ratio, is computed via approximate analytic techniques and precise numerical simulations. We find that cooperative effects arising from the noise and coupling lead to an enhancement of the response of the network over that of a single element. RP INCHIOSA, ME (reprint author), USN COMMAND, CTR CONTROL & OCEAN SURVEILLANCE, DIV RES DEV TEST & EVALUAT, CODE 573, SAN DIEGO, CA 92152 USA. NR 68 TC 77 Z9 78 U1 0 U2 2 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1063-651X J9 PHYS REV E JI Phys. Rev. E PD JUL PY 1995 VL 52 IS 1 BP 327 EP 339 DI 10.1103/PhysRevE.52.327 PN A PG 13 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA RK545 UT WOS:A1995RK54500047 ER PT J AU GEER, RE QADRI, SB SHASHIDHAR, R THIBODEAUX, AF DURAN, RS AF GEER, RE QADRI, SB SHASHIDHAR, R THIBODEAUX, AF DURAN, RS TI OFF-SPECULAR X-RAY-SCATTERING IN LANGMUIR-BLODGETT MULTILAYERS OF A LIQUID-CRYSTALLINE POLYMER SO PHYSICAL REVIEW E LA English DT Article ID INTERFACIAL ROUGHNESS; SMECTIC FILMS; DIFFRACTION; REFLECTIVITY AB The effect of surface roughness on the static layer undulations of multilayer films of a side-chain liquid-crystalline polymer has been investigated by off-specular x-ray scattering. The roughness correlation length evaluated from the off-specular data is shown to vary inversely with the average roughness of the multilayer film. The features of the off-specular x-ray scattering are similar to those exhibited by inorganic heterostructural films. C1 UNIV FLORIDA,DEPT CHEM,GAINESVILLE,FL 32611. RP GEER, RE (reprint author), USN,RES LAB,CODE 6900,WASHINGTON,DC 20375, USA. NR 32 TC 12 Z9 12 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1063-651X J9 PHYS REV E JI Phys. Rev. E PD JUL PY 1995 VL 52 IS 1 BP 671 EP 680 DI 10.1103/PhysRevE.52.671 PN A PG 10 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA RK545 UT WOS:A1995RK54500078 ER PT J AU LINCHUNG, PJ RAJAGOPAL, AK AF LINCHUNG, PJ RAJAGOPAL, AK TI HELICAL COORDINATE SYSTEM AND ELECTROSTATIC FIELDS OF DOUBLE-HELIX CHARGE-DISTRIBUTIONS SO PHYSICAL REVIEW E LA English DT Article AB We present a helical coordinate system and illustrate its use in solving electrostatic problems due to charge distribution on a double helix. It is shown that for systems with helical symmetry the resulting expression provides the structural information in the solution in a transparent way, with a structure factor separated out displaying the proper symmetry. The expressions for vector operators and other invariants for this coordinate system are also presented. We believe that this method provides an elegant description of physical systems possessing inherent helical structures. RP LINCHUNG, PJ (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 12 TC 11 Z9 12 U1 0 U2 2 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1063-651X J9 PHYS REV E JI Phys. Rev. E PD JUL PY 1995 VL 52 IS 1 BP 901 EP 906 DI 10.1103/PhysRevE.52.901 PN B PG 6 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA RK547 UT WOS:A1995RK54700023 ER PT J AU WONG, RK COLSON, WB AF WONG, RK COLSON, WB TI TUNABILITY OF FREE-ELECTRON LASERS SO PHYSICAL REVIEW E LA English DT Article ID WAVELENGTH AB In a free-electron laser oscillator, a variation in the electron beam energy leads to a change in the resonant optical frequency. Simulations are used to study the optical response to an electron beam energy change. A step change in the electron beam energy is used to define a characteristic response time for changing the optical frequency. RP WONG, RK (reprint author), USN,POSTGRAD SCH,DEPT PHYS,MONTEREY,CA 93943, USA. NR 10 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 1063-651X J9 PHYS REV E JI Phys. Rev. E PD JUL PY 1995 VL 52 IS 1 BP 981 EP 985 DI 10.1103/PhysRevE.52.981 PN B PG 5 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA RK547 UT WOS:A1995RK54700031 ER PT J AU COCHRAN, FL DAVIS, J VELIKOVICH, AL AF COCHRAN, FL DAVIS, J VELIKOVICH, AL TI STABILITY AND RADIATIVE PERFORMANCE OF STRUCTURED Z-PINCH LOADS IMPLODED ON HIGH-CURRENT PULSED-POWER GENERATORS SO PHYSICS OF PLASMAS LA English DT Article ID RAYLEIGH-TAYLOR INSTABILITY; PLASMA C1 USN,RES LAB,DIV PLASMA PHYS,WASHINGTON,DC 20375. BERKELEY SCHOLARS INC,SPRINGFIELD,VA 22150. RP COCHRAN, FL (reprint author), BERKELEY RES ASSOCIATES INC,SPRINGFIELD,VA 22150, USA. RI Velikovich, Alexander/B-1113-2009 NR 12 TC 35 Z9 37 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 1070-664X J9 PHYS PLASMAS JI Phys. Plasmas PD JUL PY 1995 VL 2 IS 7 BP 2765 EP 2772 DI 10.1063/1.871475 PG 8 WC Physics, Fluids & Plasmas SC Physics GA RG335 UT WOS:A1995RG33500020 ER PT J AU PARKER, DS AF PARKER, DS TI PRACTICAL APPLICATION OF HVOF THERMAL SPRAY TECHNOLOGY FOR NAVY JET ENGINE OVERHAUL AND REPAIRS SO PLATING AND SURFACE FINISHING LA English DT Article AB Innovations in the area of high-velocity oxygen fuel (HVOF) thermal spray coating deposition have provided aircraft repair facilities numerous new options in overhaul procedures. Parts that were previously approved for repairs utilizing only D-gun technology can now be successfully coated using an HVOF gun to achieve similar properties. This edited version of a presentation at the 31st Annual Aerospace/Airline Plating and Metal Finishing Forum, held April 25-27 in Denver, CO, examines the test program developed by the Naval Aviation Depot Jacksonville, FL, to apply coatings using an HVOF gun. The presentation won the Robert C, Garland Award, named for a long-time supporter of AESF who helped create and organize the first Forum in 1963, As the Garland Award winner, the author of the presentation receives a certificate and an honorarium. C1 USN,AIR STN,AVIAT DEPOT,PENSACOLA,FL. RP PARKER, DS (reprint author), USN,AIR STN,NAVAL AVIAT DEPOTS THERMAL SPRAY FACIL,JACKSONVILLE,FL 32212, USA. NR 0 TC 2 Z9 2 U1 0 U2 1 PU AMER ELECTROPLATERS SOC INC PI ORLANDO PA 12644 RESEARCH PKWY, ORLANDO, FL 32826-3298 SN 0360-3164 J9 PLAT SURF FINISH JI Plat. Surf. Finish. PD JUL PY 1995 VL 82 IS 7 BP 20 EP 23 PG 4 WC Metallurgy & Metallurgical Engineering; Materials Science, Coatings & Films SC Metallurgy & Metallurgical Engineering; Materials Science GA RF132 UT WOS:A1995RF13200004 ER PT J AU COWDRY, RW ALFRED, DC FOX, JC GOLDMANRAKIC, PS HAMBURG, BA JARVIS, CD MATARAZZO, JD MCGAUGH, JL SHUMWAY, DL TUCKER, GJ STRETE, C VARMUS, RT SCARAMOZZINO, JA SHALALA, DE BORNEMANN, TH BOWER, GH JACKSON, JS BIEDERMAN, I CARPENTER, P CONGER, R GALLISTEL, CR GOLDSMITH, HH HOUSE, J KIHLSTROM, JF JONES, JM KAHNEMAN, D LEVENSON, RW ROVEECOLLIER, C RUBLE, D SNOWDON, C ALBERTS, J CAUCE, AM CLARK, M CUTRONA, C DEWAAL, F EAGLY, A EMDE, R FUNDER, D GARDNER, H GELMAN, S GOOD, B HARACKIEWICZ, J HARTER, S HIGGINS, ET HOLYOAK, K KITAYAMA, S LOFTUS, E MCCLINTOCK, M MCLANAHAN, S MENAGHAN, E MINEKA, S NEWPORT, E POSNER, M RESCORLA, R ROSS, CE SATINOFF, E SCHACTER, D SEIDENBERG, M KOSLOW, SH OLIVERI, ME COCKING, RR HANN, DM SHERMAN, SJ SHINN, M STERNBERG, R SUOMI, S THELEN, E TREISMAN, A HUFFMAN, LC KURTZMAN, HS TRICKETT, EJ ROSENFELD, AH TROTTER, R AF COWDRY, RW ALFRED, DC FOX, JC GOLDMANRAKIC, PS HAMBURG, BA JARVIS, CD MATARAZZO, JD MCGAUGH, JL SHUMWAY, DL TUCKER, GJ STRETE, C VARMUS, RT SCARAMOZZINO, JA SHALALA, DE BORNEMANN, TH BOWER, GH JACKSON, JS BIEDERMAN, I CARPENTER, P CONGER, R GALLISTEL, CR GOLDSMITH, HH HOUSE, J KIHLSTROM, JF JONES, JM KAHNEMAN, D LEVENSON, RW ROVEECOLLIER, C RUBLE, D SNOWDON, C ALBERTS, J CAUCE, AM CLARK, M CUTRONA, C DEWAAL, F EAGLY, A EMDE, R FUNDER, D GARDNER, H GELMAN, S GOOD, B HARACKIEWICZ, J HARTER, S HIGGINS, ET HOLYOAK, K KITAYAMA, S LOFTUS, E MCCLINTOCK, M MCLANAHAN, S MENAGHAN, E MINEKA, S NEWPORT, E POSNER, M RESCORLA, R ROSS, CE SATINOFF, E SCHACTER, D SEIDENBERG, M KOSLOW, SH OLIVERI, ME COCKING, RR HANN, DM SHERMAN, SJ SHINN, M STERNBERG, R SUOMI, S THELEN, E TREISMAN, A HUFFMAN, LC KURTZMAN, HS TRICKETT, EJ ROSENFELD, AH TROTTER, R TI BASIC BEHAVIORAL-SCIENCE RESEARCH FOR MENTAL-HEALTH - A NATIONAL INVESTMENT - A REPORT OF THE NATIONAL-ADVISORY-MENTAL-HEALTH-COUNCIL BEHAVIORAL-SCIENCE TASK-FORCE SO PSYCHOLOGICAL SCIENCE LA English DT Editorial Material C1 MOREHOUSE SCH MED,ATLANTA,GA 30310. UNIV VIRGINIA,CHARLOTTESVILLE,VA 22903. YALE UNIV,SCH MED,NEW HAVEN,CT 06520. WILLIAM T GRANT FDN,NEW YORK,NY. COUNCIL DIST COLUMBIA,WASHINGTON,DC. OREGON HLTH SCI UNIV,PORTLAND,OR 97201. UNIV CALIF IRVINE,IRVINE,CA 92717. NEW HAMPSHIRE DIV MENTAL HLTH & DEV SERV,CONCORD,NH. UNIV WASHINGTON,SEATTLE,WA 98195. NIH,BETHESDA,MD 20892. DEPT VET AFFAIRS,WASHINGTON,DC. USN,POSTGRAD SCH,MONTEREY,CA 93940. US DEPT HHS,WASHINGTON,DC 20201. SUBST ABUSE & MENTAL HLTH ADM,ROCKVILLE,MD. RP COWDRY, RW (reprint author), NIMH,ROCKVILLE,MD 20857, USA. NR 0 TC 0 Z9 0 U1 0 U2 8 PU CAMBRIDGE UNIV PRESS PI NEW YORK PA 40 WEST 20TH STREET, NEW YORK, NY 10011-4211 SN 0956-7976 J9 PSYCHOL SCI JI Psychol. Sci. PD JUL PY 1995 VL 6 IS 4 BP 192 EP 202 PG 11 WC Psychology, Multidisciplinary SC Psychology GA RK948 UT WOS:A1995RK94800002 ER PT J AU TREJO, LJ RYANJONES, DL KRAMER, AF AF TREJO, LJ RYANJONES, DL KRAMER, AF TI ATTENTIONAL MODULATION OF THE MISMATCH NEGATIVITY ELICITED BY FREQUENCY DIFFERENCES BETWEEN BINAURALLY PRESENTED TONE BURSTS SO PSYCHOPHYSIOLOGY LA English DT Article DE AUDITORY EVENT-RELATED POTENTIAL; MISMATCH NEGATIVITY; SELECTIVE ATTENTION ID EVENT-RELATED POTENTIALS; SELECTIVE-ATTENTION; AUDITORY-STIMULI; INTERSTIMULUS-INTERVAL; EVOKED-POTENTIALS; BRAIN POTENTIALS; WAVE; ERP AB We examined the attentional sensitivity of the frequency-change mismatch negativity (MMN). Subjects listened to a binaural mixture of a narrative and a series of tone bursts that included 1200-Hz standards and two deviants (1000 and 1400 Hz). In the attend-tones condition, subjects responded to one deviant and ignored the narrative. In the attend-words condition, subjects responded to target words in the narrative and ignored the tones. Event-related potentials (ERPs) were recorded for the tones, and difference waves (deviant ERPs minus standard ERPs) were computed. Two negative peaks in the difference waves, DN1 (100-180 ms) and DN2 (200-300 ms), overlapped the known scalp distribution and latency of the MMN. Mean DN1 and DN2 amplitudes were greater in the attend-tones condition than in the attend-words condition. These data suggest that the frequency-change MMN is modulated by nonspatial shifts of auditory attention. C1 USN, CTR PERSONNEL RES & DEV, TRAINING RES DEPT, SAN DIEGO, CA USA. RP TREJO, LJ (reprint author), UNIV ILLINOIS, DEPT PSYCHOL, 603 E DANIEL ST, CHAMPAIGN, IL 61820 USA. NR 35 TC 72 Z9 73 U1 0 U2 2 PU SOC PSYCHOPHYSIOL RES PI WASHINGTON PA 1010 VERMONT AVE NW SUITE 1100, WASHINGTON, DC 20005 SN 0048-5772 J9 PSYCHOPHYSIOLOGY JI Psychophysiology PD JUL PY 1995 VL 32 IS 4 BP 319 EP 328 DI 10.1111/j.1469-8986.1995.tb01214.x PG 10 WC Psychology, Biological; Neurosciences; Physiology; Psychology; Psychology, Experimental SC Psychology; Neurosciences & Neurology; Physiology GA RJ252 UT WOS:A1995RJ25200002 PM 7652108 ER PT J AU RYAN, B AF RYAN, B TI NAVAL STATION MAYPORT JUMP-STARTS QUALITY SO QUALITY PROGRESS LA English DT Article RP RYAN, B (reprint author), USN,OFF UNDER SECRETARY,TOTAL QUAL LEADERSHIP OFF,ALEXANDRIA,VA 22302, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC QUALITY CONTROL-ASQC PI MILWAUKEE PA ASQC MEMBERSHIP MANAGER 611 E. WISCONSIN AVENUE, MILWAUKEE, WI 53202 SN 0033-524X J9 QUAL PROG JI Qual. Prog. PD JUL PY 1995 VL 28 IS 7 BP 95 EP 100 PG 6 WC Engineering, Multidisciplinary; Engineering, Industrial; Management; Operations Research & Management Science SC Engineering; Business & Economics; Operations Research & Management Science GA RG824 UT WOS:A1995RG82400026 ER PT J AU LANGLAND, RH ELSBERRY, RL ERRICO, RM AF LANGLAND, RH ELSBERRY, RL ERRICO, RM TI EVALUATION OF PHYSICAL PROCESSES IN AN IDEALIZED EXTRATROPICAL CYCLONE USING ADJOINT SENSITIVITY SO QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY LA English DT Article DE ADJOINT METHODS; AIR-SEA INTERACTION; BAROCLINIC INSTABILITY; CYCLOGENESIS; SEA SURFACE TEMPERATURE; SURFACE STRESS ID LINEAR BAROCLINIC WAVES; 4-DIMENSIONAL VARIATIONAL ASSIMILATION; EXPLOSIVELY DEEPENING CYCLONE; SURFACE-ENERGY FLUXES; NCAR MESOSCALE MODEL; AIR-SEA INTERACTION; NUMERICAL-SIMULATION; WESTERN ATLANTIC; NORTH-ATLANTIC; LIFE-CYCLE AB An adjoint model is used to examine the sensitivity of an idealized dry extratropical cyclogenesis simulation to perturbations of predictive variables and parameters during the cyclone life cycle. The adjoint sensitivity indicates how small perturbations of model variables or parameters anywhere in the model domain can influence cyclone central pressure. Largest sensitivity for both temperature and wind perturbations is located between 600 and 900 hPa in the baroclinic zone above the developing cyclone. Perturbations of a given size have more influence on cyclone intensity when located in high-sensitivity regions (the middle and lower troposphere in this simulation). The effects of physical processes can be interpreted with adjoint sensitivity by considering perturbations that are proportional to temperature and wind tendencies in the basic state (nonlinear forecast). In the early phase of the cyclone life cycle, temperature advection near the steering level in the lower troposphere (about 800 hPa) is strongly cyclogenetic and resembles a Charney mode of baroclinic instability. During the phase of most rapid deepening, temperature advection in the lower troposphere remains important, while interpretation of sensitivity to wind perturbations suggests that increased vorticity in the middle and upper troposphere above the surface low-pressure centre may also be significant for cyclone intensification. Adjoint techniques can provide insight into spatial and temporal sensitivity not easily obtained from other methods. Higher sea surface temperature (SST) has a cyclogenetic effect mainly in a localized region corresponding to the cyclone warm sector. Outside the areas of high sensitivity, small perturbations of SST have very little effect on central pressure of the forecast cyclone. When strong upward sensible-heat flux, F-s, exists, it can have a cyclogenetic (preconditioning) influence early in the cyclone life cycle, although downward F-s in the cyclone warm sector is anticyclogenetic during the phase of most rapid deepening. The sensitivity indicates that F-s can be cyclogenetic in one location and anticyclogenetic at the same time in another location, so that F-s effects on cyclone intensity are partially self-cancelling. Surface momentum stress is anticyclogenetic, with sensitivity highly localized in the cyclone warm sector. C1 USN,POSTGRAD SCH,MONTEREY,CA. NATL CTR ATMOSPHER RES,BOULDER,CO 80307. RP LANGLAND, RH (reprint author), USN,RES LAB,MONTEREY,CA 93943, USA. NR 78 TC 63 Z9 63 U1 0 U2 3 PU ROYAL METEOROLOGICAL SOC PI READING PA 104 OXFORD ROAD, READING, BERKS, ENGLAND RG1 7LJ SN 0035-9009 J9 Q J ROY METEOR SOC JI Q. J. R. Meteorol. Soc. PD JUL PY 1995 VL 121 IS 526 BP 1349 EP 1386 DI 10.1002/qj.49712152608 PN B PG 38 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA RR995 UT WOS:A1995RR99500007 ER PT J AU SCHNARKOWSKI, P TIRMAN, PFJ FUCHIGAMI, KD CRUES, JV BUTLER, MG GENANT, HK AF SCHNARKOWSKI, P TIRMAN, PFJ FUCHIGAMI, KD CRUES, JV BUTLER, MG GENANT, HK TI MENISCAL OSSICLE - RADIOGRAPHIC AND MR-IMAGING FINDINGS SO RADIOLOGY LA English DT Article DE KNEE, ABNORMALITIES; KNEE, LIGAMENTS, MENISCI, AND CARTILAGE AB PURPOSE: To determine the magnetic resonance (MR) imaging appearance of meniscal ossicles and correlate that with the radiographic and clinical features. MATERIALS AND METHODS: Radiographs and MR images were studied retrospectively in six patients with meniscal ossicles; all patients had intermittent discomfort in the knee, and five patients had experienced knee trauma. Imaging findings were correlated with the clinical history. Four patients underwent arthroscopy. RESULTS: All patients had a visible ossicle on conventional radiographs initially interpreted as a loose joint body. MR imaging features included a corticated marrow-containing structure within the substance of the medial meniscus near the tibial attachment that appeared as a rounded focus of increased signal intensity on T1-weighted images that decreased in signal intensity on T2-weighted images. CONCLUSION: Meniscal ossicles have a characteristic MR appearance that may help distinguish them from loose bodies. They should be considered diagnostically when a circumscribed ossification is identified near the posterior horn of the medial meniscus oil radiographs. C1 CEDARS SINAI MED CTR,MRI,DEPT MED IMAGING,LOS ANGELES,CA. UNIV CALIF SAN FRANCISCO,DEPT RADIOL,SAN FRANCISCO,CA 94143. USN,MED CTR,DEPT RADIOL,PORTSMOUTH,VA 23708. SAN FRANCISCO MAGNET RESONANCE CTR,SAN FRANCISCO,CA 94118. NR 12 TC 32 Z9 33 U1 0 U2 0 PU RADIOLOGICAL SOC NORTH AMER PI EASTON PA 20TH AND NORTHAMPTON STS, EASTON, PA 18042 SN 0033-8419 J9 RADIOLOGY JI Radiology PD JUL PY 1995 VL 196 IS 1 BP 47 EP 50 PG 4 WC Radiology, Nuclear Medicine & Medical Imaging SC Radiology, Nuclear Medicine & Medical Imaging GA RE308 UT WOS:A1995RE30800013 PM 7784586 ER PT J AU ASKARI, F DONATO, T KELLER, WC AF ASKARI, F DONATO, T KELLER, WC TI AIRBORNE SCATTEROMETER DETECTION OF WINDS AND SEA-SURFACE ROUGHNESS CHANGES ACROSS THE GULF-STREAM FRONT SO REMOTE SENSING OF ENVIRONMENT LA English DT Article ID MARINE BOUNDARY-LAYER; RADAR CROSS-SECTION; COLD-AIR OUTBREAK; THERMAL FRONTS; OCEANIC FRONT; JANUARY 1986; NORTH WALL; GALE; CIRCULATION; TEMPERATURE AB This article investigates the scatterometer radar cross-section distributions and wind stress spatial variability across a sea surface temperature (SST) front under different wind directions and synoptic scale atmospheric forcings. Shipboard meteorological measurements in concert with airborne K-u-band (14.0 Ghz) rotating scatterometer data show evidence of mesoscale circulation near the front during low ambient winds (4 m/s) blowing from the cold side of the SST front to the warm side. The mesoscale signature is characterized by a 25-35 degrees counterclockwise shift in the wind direction and a maximum of 4.9 dB increase in the backscattering cross section across the front. The mesoscale circulation is reduced when the wind direction reverses, and the ambient wind flow increases to 13.6 m/s. The maximum cross-section change across the front is reduced to 3.6 dB. The azimuthal characteristics of the scatterometer data are compared with the predictions of two scatterometer model functions. According to the models, the anisotropy of the short waves is inversely related to the wind speed, such that the short wave directional spreads tend to broaden as the wind speed increases. The scatterometer data, however, show greater short-wave anisotropy at the higher wind speeds. This measured difference could be caused by current velocity changes or by longwave directional changes across the front. C1 N CAROLINA STATE UNIV,DEPT MARINE EARTH & ATMOSPHER SCI,RALEIGH,NC 27695. UNIV WASHINGTON,APPL PHYS LAB,SEATTLE,WA 98105. RP ASKARI, F (reprint author), USN,RES LAB,DIV REMOTE SENSING,WASHINGTON,DC 20375, USA. NR 28 TC 6 Z9 6 U1 0 U2 1 PU ELSEVIER SCIENCE PUBL CO INC PI NEW YORK PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 SN 0034-4257 J9 REMOTE SENS ENVIRON JI Remote Sens. Environ. PD JUL PY 1995 VL 53 IS 1 BP 31 EP 45 DI 10.1016/0034-4257(94)00112-Z PG 15 WC Environmental Sciences; Remote Sensing; Imaging Science & Photographic Technology SC Environmental Sciences & Ecology; Remote Sensing; Imaging Science & Photographic Technology GA RN884 UT WOS:A1995RN88400003 ER PT J AU NGAI, KL PLAZEK, DJ AF NGAI, KL PLAZEK, DJ TI IDENTIFICATION OF DIFFERENT MODES OF MOLECULAR-MOTION IN POLYMERS THAT CAUSE THERMORHEOLOGICAL COMPLEXITY SO RUBBER CHEMISTRY AND TECHNOLOGY LA English DT Review ID LOCAL CHAIN MOTION; BULK AMORPHOUS POLYMERS; GLASS-TRANSITION TEMPERATURE; NEUTRON-SCATTERING EXPERIMENTS; NUCLEAR-MAGNETIC-RESONANCE; DYNAMIC LIGHT-SCATTERING; TIME-SCALE SHIFTS; DIELECTRIC-RELAXATION; VISCOELASTIC BEHAVIOR; SEGMENTAL RELAXATION AB The viscoelastic properties of amorphous polymers are reviewed with emphasis on the glass to rubber dispersion (often referred to as the transition zone). Deviations from thermorheological simplicity (where molecular retardation and relaxation mechanisms have the same temperature dependence) are identified. Most theories and models of polymer chain dynamics do not address or acknowledge thermorheological complexities and correlations, such as that between the temperature dependence and the breadth of viscoelastic and dielectric dispersions of the local segmental motion. Without successful theories of these phenomena the understanding of polymer chain dynamics must be considered incomplete. In this review, old and new experimental data are used to identify the different modes of molecular motions and the domains of their contributions to the time and frequency dependence of the mechanical response of amorphous polymers. The different modes are then shown generally to have their own dependence on temperature. Thus the viscoelastic spectrum, including local segmental motions which dominate the onset of glassy behavior and largely determine the glass temperature, T-g, the glass to rubber softening dispersion, the rubbery plateau and the terminal zone, is thermorheologically complex. A coupling theory, with the physics of intermolecular interactions and cooperativity built into it, describes well the many-body dynamics of densely packed molecular systems such as polymers. The many predictions of the coupling theory are applied to the different viscoeleatic modes to explain the observed anomalous experimental facts and established correlations. The theoretical understanding has been improved to the extent that now a connection can be made between the chemical structure of the monomer and the viscoelastic properties of the polymer. C1 UNIV PITTSBURGH, DEPT MAT SCI & ENGN, PITTSBURGH, PA 15261 USA. RP NGAI, KL (reprint author), USN, RES LAB, WASHINGTON, DC 20375 USA. NR 209 TC 250 Z9 253 U1 4 U2 44 PU AMER CHEMICAL SOC INC PI AKRON PA RUBBER DIV UNIV AKRON PO BOX 499, AKRON, OH 44309-0499 USA SN 0035-9475 J9 RUBBER CHEM TECHNOL JI Rubber Chem. Technol. PD JUL-AUG PY 1995 VL 68 IS 3 BP 376 EP 434 DI 10.5254/1.3538749 PG 59 WC Polymer Science SC Polymer Science GA RU698 UT WOS:A1995RU69800003 ER PT J AU FOX, RB AF FOX, RB TI NOMENCLATURE OF POLYMERIC MATERIALS SO RUBBER CHEMISTRY AND TECHNOLOGY LA English DT Review RP FOX, RB (reprint author), USN,RES LAB,CODE 6120,WASHINGTON,DC 20375, USA. NR 5 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC INC PI AKRON PA RUBBER DIV UNIV AKRON PO BOX 499, AKRON, OH 44309-0499 SN 0035-9475 J9 RUBBER CHEM TECHNOL JI Rubber Chem. Technol. PD JUL-AUG PY 1995 VL 68 IS 3 BP 547 EP 550 DI 10.5254/1.3538755 PG 4 WC Polymer Science SC Polymer Science GA RU698 UT WOS:A1995RU69800009 ER PT J AU COMBS, G KELF, M AF COMBS, G KELF, M TI INTERCONNECT TECHNOLOGY - A NEW DIGITAL CABLE TEST SYSTEM SO SEA TECHNOLOGY LA English DT Article C1 USN,CTR UNDERSEA WAREFARE,KEYPORT DIV,DEPT ENVIRONM TEST SCI,KEYPORT,WA 98345. RP COMBS, G (reprint author), USN,CTR UNDERSEA WARFARE,DIV KEYPORT,INTERCONNECT TECHNOL PROJECT,CODE 53,610 DOWELL ST,KEYPORT,WA 98345, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU COMPASS PUBL INC PI ARLINGTON PA SUITE 1000 1117 N 19 ST, ARLINGTON, VA 22209 SN 0093-3651 J9 SEA TECHNOL JI Sea Technol. PD JUL PY 1995 VL 36 IS 7 BP 41 EP 43 PG 3 WC Engineering, Ocean SC Engineering GA RK609 UT WOS:A1995RK60900007 ER PT J AU LEE, CH CHEN, HH HOKE, G JONG, JS WHITE, L KANG, YH AF LEE, CH CHEN, HH HOKE, G JONG, JS WHITE, L KANG, YH TI ANTISENSE GENE SUPPRESSION AGAINST HUMAN ICAM-1, ELAM-1, AND VCAM-1 IN CULTURED HUMAN UMBILICAL VEIN ENDOTHELIAL-CELLS SO SHOCK LA English DT Article ID LEUKOCYTE ADHESION MOLECULE-1; TUMOR-NECROSIS-FACTOR; RNASE-H; OLIGONUCLEOTIDES; EXPRESSION; INVIVO; MECHANISMS AB Antisense gene suppression has been carried out for human ICAM-1, ELAM-1, and VCAM-1 in cultured human umbilical vein endothelial cells (HUVEC) stimulated by lipopolysaccharide, tumor necrosis factor alpha, or interleukin-1 beta. A panel of antisense phosphorothioate oligodeoxyribonucleotides (PS-ODN), complementary to mRNA or pre-mRNA of these molecules, were tested for their gene suppression activity monitored by radioimmunoassay of the respective cell surface adhesion molecules. Sequences targeted by effective antisense PS-ODNs were located throughout the mRNA and pre-mRNA. ''Hot spots'' of gene suppression sites for each region were observed. Shift of the PS-ODN hybridizing site upstream or downstream by a few bases resulted in drastic change of gene suppression efficiency. In addition to translation arrest and RNase H activity, a third mechanism was proposed for antisense gene suppression, involving multiple binding sites for PS-ODN and the activities of RNase H and RNases other than RNase H. Suppression of ICAM-1, ELAM-1, or VCAM-1 in HUVEC by their antisense PS-ODNs resulted in the reduction of adhesion of monocytes and U937 to HUVEC. This may suggest cooperativity among the adhesion molecule pairs in endothelial-leukocyte adhesion, since decrease of a single adhesion molecule on EC surface significantly reduced cell-cell adherence. C1 USN,MED RES CTR,PATHOBIOL BRANCH,BETHESDA,MD 20889. GEORGE MASON UNIV,DEPT CHEM,FAIRFAX,VA 22030. DYAD PHARMACEUT,COLUMBIA,MD 21046. RP LEE, CH (reprint author), USN,MED RES CTR,SEPT SHOCK RES PROGRAM,CODE 062,BETHESDA,MD 20889, USA. NR 31 TC 49 Z9 51 U1 0 U2 0 PU BIOMEDICAL PRESS PI AUGUSTA PA 1021 15TH ST, BIOTECH PARK STE 9, AUGUSTA, GA 30901 SN 1073-2322 J9 SHOCK JI Shock PD JUL PY 1995 VL 4 IS 1 BP 1 EP 10 DI 10.1097/00024382-199507000-00001 PG 10 WC Critical Care Medicine; Hematology; Surgery; Peripheral Vascular Disease SC General & Internal Medicine; Hematology; Surgery; Cardiovascular System & Cardiology GA RG902 UT WOS:A1995RG90200001 PM 7552771 ER PT J AU ROGERS, GW SOLKA, JL PRIEBE, CE AF ROGERS, GW SOLKA, JL PRIEBE, CE TI A PDP APPROACH TO LOCALIZED FRACTAL DIMENSION COMPUTATION WITH SEGMENTATION BOUNDARIES SO SIMULATION LA English DT Article DE PARALLEL DISTRIBUTED PROCESSING; FRACTAL DIMENSION; COVERING METHOD; KULLBACK-LEIBLER ID CLASSIFICATION; FEATURES; IMAGES AB A parallel distributed processing approach to the computation of localized fractal dimension values in imagery is presented. This approach is a further development of the covering method which requires only nearest neighbor communication. A major benefit of our approach is the ability to readily incorporate any boundary information that may be available. Many fractal textures or surfaces are fractal only in distribution. With this in mind, we show that comparison of the fractal dimension distributions via Kullback-Leibler can give an improved texture discrimination capability over comparison of computed fractal dimension. Results are presented for a set of textures. C1 GEORGE MASON UNIV,CTR COMPUTAT STAT,FAIRFAX,VA 22030. JOHNS HOPKINS UNIV,DEPT MATH SCI,BALTIMORE,MD 21218. USN,CTR OCEAN SYST,SAN DIEGO,CA 92152. RP ROGERS, GW (reprint author), USN,CTR SURFACE WARFARE,ADV COMPUTAT TECHNOL GRP,DAHLGREN DIV,DAHLGREN,VA 22448, USA. RI Priebe, Carey E./A-3305-2010 NR 13 TC 2 Z9 2 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 JUL PY 1995 VL 65 IS 1 BP 26 EP 36 DI 10.1177/003754979506500104 PG 11 WC Computer Science, Interdisciplinary Applications; Computer Science, Software Engineering SC Computer Science GA RP483 UT WOS:A1995RP48300003 ER PT J AU MELESE, F AF MELESE, F TI GOVERNMENT-MANDATED BENEFITS, TAXES, AND WAGES SO SOUTHERN ECONOMIC JOURNAL LA English DT Article C1 UNIV CALIF SANTA CRUZ,SANTA CRUZ,CA 95064. RP MELESE, F (reprint author), USN,GRAD SCH,DRMI,MONTEREY,CA 93940, USA. NR 29 TC 1 Z9 1 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 JUL PY 1995 VL 62 IS 1 BP 53 EP 70 DI 10.2307/1061375 PG 18 WC Economics SC Business & Economics GA RH033 UT WOS:A1995RH03300005 ER PT J AU SOLIMAN, A TRIBBLE, D LOUIS, M SULTAN, Y SALIB, A HIBBS, R GIRGIS, N AF SOLIMAN, A TRIBBLE, D LOUIS, M SULTAN, Y SALIB, A HIBBS, R GIRGIS, N TI CRYPTOCOCCAL MENINGITIS IN CAIRO, EGYPT - REPORT OF 5 CASES SO TRANSACTIONS OF THE ROYAL SOCIETY OF TROPICAL MEDICINE AND HYGIENE LA English DT Note DE CRYPTOCOCCUS; CRYPTOCOCCAL MENINGITIS; CASE REPORTS; EGYPT C1 MINIST HLTH CAIRO,ABBASSIA FEVER HOSP,CAIRO,EGYPT. RP SOLIMAN, A (reprint author), USN,MED RES UNIT 3,RES PUBL BRANCH,PSC 452,BOX 5000,CODE 101F,FPO,AE 09835, USA. NR 4 TC 1 Z9 2 U1 0 U2 0 PU ROYAL SOC TROPICAL MEDICINE PI LONDON PA MANSON HOUSE 26 PORTLAND PLACE, LONDON, ENGLAND W1N 4EY SN 0035-9203 J9 T ROY SOC TROP MED H JI Trans. Roy. Soc. Trop. Med. Hyg. PD JUL-AUG PY 1995 VL 89 IS 4 BP 410 EP 410 DI 10.1016/0035-9203(95)90033-0 PG 1 WC Public, Environmental & Occupational Health; Tropical Medicine SC Public, Environmental & Occupational Health; Tropical Medicine GA RT595 UT WOS:A1995RT59500027 PM 7570882 ER PT J AU LATENDRESSE, JR BROOKS, CL CAPEN, CC AF LATENDRESSE, JR BROOKS, CL CAPEN, CC TI TOXIC EFFECTS OF BUTYLATED TRIPHENYL PHOSPHATE-BASED HYDRAULIC FLUID AND TRICRESYL PHOSPHATE IN FEMALE F344 RATS SO VETERINARY PATHOLOGY LA English DT Article DE ADRENOCORTICAL FUNCTION; FEMALE F344 RATS; HYDRAULIC FLUID; LIVER FUNCTION; OVARIAN FUNCTION; TRICRESYL PHOSPHATE; TRIPHENYL PHOSPHATE ID CELLS AB Triaryl phosphates, including tricresyl phosphate (TCP) and butylated triphenyl phosphates (BTP), are used in the commercial manufacture of plastics, lubricants, and hydraulic fluids. Recent reports implicate these compounds as endocrine and reproductive toxicants that can cause cholesteryl lipidosis in adrenocortical (AC) and ovarian interstitial (OI) cells, suggesting altered metabolism of steroid hormones or cholesterol or of both. We investigated potential mechanisms of BTP and TCP toxicity to determine if there were functional abnormalities of the adrenal cortex or ovary. Groups of intact (nine or 12) and ovariectomized (six) female F344 rats, 10-12 weeks of age, received 0, 0.4 g/kg TCP, or 1.7 g/kg BTP in sesame oil vehicle or 1.7 g/kg neat BTP for 20, 40, or 60 days. All rats administered BTP and TCP developed cholesteryl lipidosis in AC and OI cells; the TCP-treated group was most severely affected. Serum concentrations of androstenedione and corticosterone were unchanged, but estradiol levels were significantly (P less than or equal to 0.05) elevated in BTP- and TCP-treated groups (14.5 times and 37.5 times greater than controls, respectively). Vaginal cytology revealed that BTP- but not TCP-treated females had abnormal reproductive cycles that were significantly prolonged in diestrus (3 times greater than control). There were significant elevations in serum total cholesterol (TCP-treated group was 1.3 times greater than controls), low-density lipoprotein (TCP-treated group was 1.8 times greater than controls), alanine transaminase (BTP-treated group was 2 times greater than controls), and albumin (a major serum estradiol-binding protein; BTP-treated group was 4.6 g/dl vs. 3.6 g/dl for controls). Liver weights (134% that of controls) and P-450 enzymes (3 times greater than controls) were significantly increased in BTP-treated rats. Abnormal reproductive cycles, elevated serum albumin, and increased hepatic P-450 concentration suggested fecundity could be affected in female rats exposed to BTP, most likely because of altered liver metabolism. Ovariectomized BTP-treated and control rats had similarly increased uterine weights after challenge with estradiol and estradiol benzoate, indicating that triaryl phosphate-induced esterase inhibition or other xenobiotic-induced block of hormone action in estradiol-responsive tissues was not responsible for the prolonged diestrus in rats with elevated serum estradiol. The pathogenesis of the cholesteryl lipidosis induced by TCP and BTP appeared to be separate from the reproductive effects because the lipidosis was most severe in TCP-treated rats, which had normal reproductive cycles and fertility. C1 USN,MED RES INST,TOXICOL DETACHMENT,WRIGHT PATTERSON AFB,OH 45433. OHIO STATE UNIV,DEPT VET BIOSCI,COLUMBUS,OH. RI Latendresse, John/A-9215-2009 NR 27 TC 6 Z9 7 U1 0 U2 3 PU AMER COLL VET PATHOLOGIST PI LAWRENCE PA 810 EAST 10TH STREET, LAWRENCE, KS 66044 SN 0300-9858 J9 VET PATHOL JI Vet. Pathol. PD JUL PY 1995 VL 32 IS 4 BP 394 EP 402 PG 9 WC Pathology; Veterinary Sciences SC Pathology; Veterinary Sciences GA RH947 UT WOS:A1995RH94700008 PM 7483214 ER PT J AU DECREDICO, MA AF DECREDICO, MA TI LEE ADJUTANT - THE WARTIME LETTERS OF TAYLOR,WALTER,HERRON, 1862-1865 - TOWER,R, BELMONT,JS SO VIRGINIA MAGAZINE OF HISTORY AND BIOGRAPHY LA English DT Book Review RP DECREDICO, MA (reprint author), USN ACAD,ANNAPOLIS,MD 21402, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU VIRGINIA HISTORICAL SOC PI RICHMOND PA BOX 7311, RICHMOND, VA 23221 SN 0042-6636 J9 VA MAG HIST BIOG JI VA. Mag. Hist. Biogr. PD JUL PY 1995 VL 103 IS 3 BP 382 EP 383 PG 2 WC History SC History GA RP434 UT WOS:A1995RP43400010 ER PT J AU WANG, J FOSTER, N ARMALIS, S LARSON, D ZIRINO, A OLSEN, K AF WANG, J FOSTER, N ARMALIS, S LARSON, D ZIRINO, A OLSEN, K TI REMOTE STRIPPING ELECTRODE FOR IN-SITU MONITORING OF LABILE COPPER IN THE MARINE-ENVIRONMENT SO ANALYTICA CHIMICA ACTA LA English DT Article DE SENSORS; POTENTIOMETRY; SEA WATER; COPPER; REMOTE ELECTRODE; WATERS ID NATURAL-WATERS; VOLTAMMETRY; SEAWATER AB A remote electrode, operated in the stripping potentiometric mode, is employed for in situ marine surveys of labile copper in bay seawater. The probe relies on a novel electrode assembly, coupled to a long shielded cable, and allows direct immersion of the gold working electrode in seawater. Continuous operation. of the probe from a small boat is used for obtaining the distribution pattern of copper in San Diego Bay. Monitoring of labile copper in the unpolluted water of Sequim Bay (Washington state) is also reported. As desired for metal speciation studies, such a submersible in situ operation is performed without perturbation of the natural equilibria. Laboratory optimization, in situ characterization, and future prospects are described and discussed. C1 USN, CTR OCEAN SYST, MARINE ENVIRONM BRANCH, SAN DIEGO, CA 92152 USA. UABC, CTR INVEST OCEANOL, ENSENADA, BAJA CALIFORNIA, MEXICO. PACIFIC NW LAB, GEOCHEM SECT, RICHLAND, WA 99352 USA. RP WANG, J (reprint author), NEW MEXICO STATE UNIV, DEPT CHEM & BIOCHEM, LAS CRUCES, NM 88003 USA. RI Wang, Joseph/C-6175-2011 NR 13 TC 63 Z9 63 U1 0 U2 9 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0003-2670 J9 ANAL CHIM ACTA JI Anal. Chim. Acta PD JUN 30 PY 1995 VL 310 IS 2 BP 223 EP 231 DI 10.1016/0003-2670(95)00155-S PG 9 WC Chemistry, Analytical SC Chemistry GA RF308 UT WOS:A1995RF30800003 ER PT J AU WASHBURN, A AF WASHBURN, A TI DYNAMIC-PROGRAMMING AND THE BACKPACKERS LINEAR SEARCH PROBLEM SO JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS LA English DT Article DE SEARCH; DYNAMIC PROGRAMMING ID PATHS AB A backpacker approaches a road with a marker on it, desirous of finding the marker but having only a rough idea of where it is located. It is well known among backpackers that it is best to aim either right or left of the marker, since otherwise it will not be clear which way to turn upon reaching the road. The problem of deciding exactly where to aim can be formalized as a modification of the Linear Search Problem. This paper does so, and also discusses dynamic programming as a solution method. C1 USN,POSTGRAD SCH,DEPT OPERAT RES,MONTEREY,CA 93943. NR 8 TC 3 Z9 3 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0377-0427 J9 J COMPUT APPL MATH JI J. Comput. Appl. Math. PD JUN 30 PY 1995 VL 60 IS 3 BP 357 EP 365 DI 10.1016/0377-0427(94)00038-3 PG 9 WC Mathematics, Applied SC Mathematics GA TB750 UT WOS:A1995TB75000006 ER PT J AU NATISHAN, PM EVERETT, RK GLESENER, JW PEHRSSON, PE MARUYAMA, B EDELSTEIN, AS MORRISH, AA AF NATISHAN, PM EVERETT, RK GLESENER, JW PEHRSSON, PE MARUYAMA, B EDELSTEIN, AS MORRISH, AA TI ELECTROCHEMICAL-BEHAVIOR OF DIAMOND-REINFORCED COMPOSITES SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING LA English DT Article DE ELECTROCHEMICAL BEHAVIOR; DIAMOND-REINFORCED COMPOSITES; CARBIDE FORMATION ID METAL-MATRIX COMPOSITES; CORROSION AB A diamond-reinforced 1100 aluminum matrix composite (DRC) containing 15% by volume of 30 mu m diamond particles was fabricated using standard powder metallurgy techniques at 600 degrees C. A temperature higher than that required solely for composite consolidation was selected to investigate whether carbide formation occurred. Scanning electron micrographs and Raman spectroscopy showed no detectable amount of carbide formation. Electrochemical testing showed that the pitting potential of the composite was the same as that of the pure matrix material, which also indicates that either carbides did not form or the amount formed was so small as not to alter the breakdown potential of the DRC. RP NATISHAN, PM (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. OI Everett, Richard/0000-0002-6725-9442 NR 13 TC 8 Z9 9 U1 0 U2 1 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 JUN 30 PY 1995 VL 197 IS 1 BP 79 EP 81 DI 10.1016/0921-5093(94)09738-0 PG 3 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA RG814 UT WOS:A1995RG81400009 ER PT J AU DEPATER, I HEILES, C WONG, M MADDALENA, RJ BIRD, MK FUNKE, O NEIDHOEFER, J PRICE, RM KESTEVEN, M CALABRETTA, M KLEIN, MJ GULKIS, S BOLTON, SJ FOSTER, RS SUKUMAR, S STROM, RG LEPOOLE, RS SPOELSTRA, T ROBISON, M HUNSTEAD, RW CAMPBELLWILSON, D YE, T DULK, G LEBLANC, Y GALOPEAU, P GERARD, E LECACHEUX, A AF DEPATER, I HEILES, C WONG, M MADDALENA, RJ BIRD, MK FUNKE, O NEIDHOEFER, J PRICE, RM KESTEVEN, M CALABRETTA, M KLEIN, MJ GULKIS, S BOLTON, SJ FOSTER, RS SUKUMAR, S STROM, RG LEPOOLE, RS SPOELSTRA, T ROBISON, M HUNSTEAD, RW CAMPBELLWILSON, D YE, T DULK, G LEBLANC, Y GALOPEAU, P GERARD, E LECACHEUX, A TI OUTBURST OF JUPITER SYNCHROTRON-RADIATION AFTER THE IMPACT OF COMET SHOEMAKER-LEVY-9 SO SCIENCE LA English DT Article ID RADIO IMAGES AB Jupiter's nonthermal microwave emission, as measured by a global network of 11 radio telescopes, increased dramatically during the Shoemaker-Levy 9 impacts. The increase was wavelength-dependent, varying from similar to 10 percent at 70 to 90 centimeters to similar to 45 percent at 6 and 36 centimeters. The radio spectrum hardened (flattened toward shorter wavelengths) considerably during the week of impacts and continued to harden afterward. After the week of cometary impacts, the flux density began to subside at all wavelengths and was still declining 3 months later. Very Large Array and Australia Telescope images of the brightness distribution showed the enhancement to be localized in longitude and concentrated near the magnetic equator. The evidence therefore suggests that the increase in flux density was caused by a change in the resident particle population, for example, through an energization or spatial redistribution of the emitting particles. C1 NATL RADIO ASTRON OBSERV,GREEN BANK,WV 24944. UNIV BONN,D-53121 BONN,GERMANY. MAX PLANCK INST RADIOASTRON,D-53121 BONN,GERMANY. CSIRO,EPPING,NSW 2121,AUSTRALIA. CALTECH,JET PROP LAB,PASADENA,CA 91109. USN,RES LAB,WASHINGTON,DC 20375. NATL RES COUNCIL CANADA,DOMIN RADIO ASTROPHYS OBSERV,PENTICTON,BC V2A 6K3,CANADA. NETHERLANDS FDN RES ASTRON,7990 AA DWINGELOO,NETHERLANDS. LEIDEN UNIV,2300 RA LEIDEN,NETHERLANDS. NEW MEXICO INST MIN & TECHNOL,SOCORRO,NM 87801. UNIV SYDNEY,SCH PHYS,SYDNEY,NSW 2006,AUSTRALIA. DEPT ASTROPHYS PLANETARY & ATMOSPHER SCI,BOULDER,CO 80309. OBSERV PARIS,F-92195 MEUDON,FRANCE. RP DEPATER, I (reprint author), UNIV CALIF BERKELEY,DEPT ASTRON,BERKELEY,CA 94720, USA. NR 31 TC 32 Z9 32 U1 0 U2 1 PU AMER ASSOC ADVAN SCIENCE PI WASHINGTON PA 1333 H ST NW, WASHINGTON, DC 20005 SN 0036-8075 J9 SCIENCE JI Science PD JUN 30 PY 1995 VL 268 IS 5219 BP 1879 EP 1883 DI 10.1126/science.11536723 PG 5 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA RF990 UT WOS:A1995RF99000032 PM 11536723 ER PT J AU HANSON, F AF HANSON, F TI IMPROVED LASER PERFORMANCE AT 946 AND 473 NM FROM A COMPOSITE ND-Y3AL5O12 ROD SO APPLIED PHYSICS LETTERS LA English DT Article ID ND-YAG LASER; ROOM-TEMPERATURE RP HANSON, F (reprint author), USN COMMAND,CTR CONTROL & OCEAN SURVEILLANCE,DIV RDT&E 843,SAN DIEGO,CA 92152, USA. NR 10 TC 63 Z9 64 U1 1 U2 3 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD JUN 26 PY 1995 VL 66 IS 26 BP 3549 EP 3551 DI 10.1063/1.113812 PG 3 WC Physics, Applied SC Physics GA RE742 UT WOS:A1995RE74200003 ER PT J AU BOUTROS, KS ROBERTS, JC BEDAIR, SM CARRUTHERS, TF FRANKEL, MY AF BOUTROS, KS ROBERTS, JC BEDAIR, SM CARRUTHERS, TF FRANKEL, MY TI HIGH-SPEED METAL-SEMICONDUCTOR-METAL PHOTODETECTOR MANUFACTURED ON GAAS BY LOW-TEMPERATURE PHOTOASSISTED METALORGANIC CHEMICAL-VAPOR-DEPOSITION SO APPLIED PHYSICS LETTERS LA English DT Article ID MOLECULAR-BEAM EPITAXY; LOW SUBSTRATE TEMPERATURES; SELECTIVE AREA EPITAXY; III-V-COMPOUNDS; PICOSECOND GAAS C1 USN,RES LAB,DIV OPT SCI,WASHINGTON,DC 20375. RP BOUTROS, KS (reprint author), N CAROLINA STATE UNIV,DEPT ELECT & COMP ENGN,RALEIGH,NC 27695, USA. NR 22 TC 5 Z9 5 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 JUN 26 PY 1995 VL 66 IS 26 BP 3651 EP 3653 DI 10.1063/1.114129 PG 3 WC Physics, Applied SC Physics GA RE742 UT WOS:A1995RE74200037 ER PT J AU HENDERSON, DR AF HENDERSON, DR TI THE CASE FOR SMALL GOVERNMENT SO FORTUNE LA English DT Editorial Material C1 HOOVER INST WAR REVOLUT & PEACE,STANFORD,CA. RP HENDERSON, DR (reprint author), USN,POSTGRAD SCH,MONTEREY,CA 93940, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU TIME INC PI NEW YORK PA TIME & LIFE BUILDING ROCKEFELLER CENTER, NEW YORK, NY 10020-1393 SN 0015-8259 J9 FORTUNE JI Fortune PD JUN 26 PY 1995 VL 131 IS 12 BP 39 EP 40 PG 2 WC Business SC Business & Economics GA RB690 UT WOS:A1995RB69000011 ER PT J AU BARONAVSKI, AP OWRUTSKY, JC AF BARONAVSKI, AP OWRUTSKY, JC TI LIFETIME OF THE V'(2)=1 (A)OVER-BAR STATE OF ND3 MEASURED BY 2-COLOR DEEP-UV FEMTOSECOND MULTIPHOTON IONIZATION SPECTROSCOPY SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article ID SELECTIVE PHOTODISSOCIATION DYNAMICS; ULTRAVIOLET-ABSORPTION SPECTRUM; DOUBLE-RESONANCE SPECTROSCOPY; RAMAN EXCITATION PROFILES; JET-COOLED AMMONIA; A1A2'' STATE; NH3; PREDISSOCIATION; DISSOCIATION; TRANSITION AB The photodissociation lifetime of the v(2)' = 1 band of the A state of gas phase ND3 has been directly measured using two-color deep-UV (similar to 200 nm) femtosecond multiphoton ionization spectroscopy. The rotationally averaged lifetime of 2.6 +/- 0.1 ps compares favorably with the values obtained by previous line width studies. RP BARONAVSKI, AP (reprint author), USN,RES LAB,DIV CHEM,CODE 6111,WASHINGTON,DC 20375, USA. RI Owrutsky, Jeffrey/K-7649-2012 NR 25 TC 10 Z9 10 U1 0 U2 6 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0022-3654 J9 J PHYS CHEM-US JI J. Phys. Chem. PD JUN 22 PY 1995 VL 99 IS 25 BP 10077 EP 10080 DI 10.1021/j100025a005 PG 4 WC Chemistry, Physical SC Chemistry GA RE633 UT WOS:A1995RE63300005 ER PT J AU GASYNA, Z SCHATZ, PN BOYLE, ME AF GASYNA, Z SCHATZ, PN BOYLE, ME TI ANALYSIS OF THE INTERVALENCE BAND IN LUTETIUM BIS(PHTHALOCYANINE) - THE SYSTEM IS DELOCALIZED SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article ID VIBRONIC COUPLING MODEL; VALENCE LINE-SHAPES; CREUTZ-TAUBE ION; SPECTROSCOPIC CHARACTERIZATION; SANDWICH COMPLEXES; PHTHALOCYANINE AB The intervalence band-(IVB) of LuPc(2) has been measured over the temperature range 268-328 K in CDCl3 solution and at 11 K isolated in an Ar matrix. The IVB shows resolved structure and a pronounced temperature dependence in CDCl3 solution. The various properties of the IVB are accounted for quite well if it is assumed that the system involves two conformers in equilibrium with an associated Delta H-o value of about 1000 cm(-1) One conformer is assumed to have D-4d symmetry, and the other is assumed to be slightly distorted. Piepho's MO treatment of mixed-valence systems is generalized to the case of an unsymmetrical system. The parameters extracted from fits of the IVB clearly indicate that LuPc(2) is a delocalized system, i.e., ''Pc(1.5-)(Lu3+)Pc(1.5-)'', not ''Pc(2-)(Lu3+)Pc(. 1-), Pc(. 1-)(Lu3+)Pc(2-)''. C1 UNIV VIRGINIA, DEPT CHEM, CHARLOTTESVILLE, VA 22901 USA. USN, RES LAB, CHEM MAT BRANCH, WASHINGTON, DC 20375 USA. NR 20 TC 14 Z9 14 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0022-3654 J9 J PHYS CHEM-US JI J. Phys. Chem. PD JUN 22 PY 1995 VL 99 IS 25 BP 10159 EP 10165 DI 10.1021/j100025a016 PG 7 WC Chemistry, Physical SC Chemistry GA RE633 UT WOS:A1995RE63300016 ER PT J AU MARTINPINTADO, J GAUME, RA JOHNSTON, KJ BACHILLER, R AF MARTINPINTADO, J GAUME, RA JOHNSTON, KJ BACHILLER, R TI THE DISRUPTION OF THE DENSE DISK IN CRL-618 SO ASTROPHYSICAL JOURNAL LA English DT Article DE CIRCUMSTELLAR MATTER; ISM, INDIVIDUAL (CRL 618); RADIO CONTINUUM, ISM; STARS, LATE-TYPE; STARS, MASS LOSS ID PROTO-PLANETARY NEBULAE; MOLECULAR OUTFLOW; CIRCUMSTELLAR ENVELOPES; CONTINUUM EMISSION; RADIO-CONTINUUM; EVOLVED STARS; CRL-618; AMMONIA; DISCOVERY; CRL-2688 AB High angular resolution (0''.066) 23 GHz observations of the radio continuum and NH3 (3,3) line absorption toward the protoplanetary nebula CRL 618 are presented. The (3,3) line is detected in absorption toward the continuum source. The absorption line profile shows multiple blended velocity components, symmetrically placed with respect to the approaching part of the expanding asymptotic giant branch envelope, -40 km s(-1). Kinetic temperatures and column density images reveal for the first time the presence of a hot (greater than or similar to 200 K) and dense (similar to 10(7) cm(-3)) ridge perpendicular to the bipolar molecular outflow. Hot filamentary structures are also observed along the outflow. All the observational features, the gradient in the radial velocities, the systematic behavior of the line widths observed in the (3,3) line, as well as the derived kinetic temperature gradients, are explained by a model in which the NH3 lines arise from postshocked clumps produced when the fast stellar wind from the central star impinges on the inner regions of the circumstellar disk responsible for collimating the molecular outflow. C1 USN OBSERV,WASHINGTON,DC 20392. USN,RES LAB,WASHINGTON,DC 20375. RP MARTINPINTADO, J (reprint author), CTR ASTRON YEBES,IGN,APARTADO 148,E-19080 GUADALAJARA,SPAIN. RI Martin-Pintado, Jesus/H-6107-2015 OI Martin-Pintado, Jesus/0000-0003-4561-3508 NR 21 TC 16 Z9 16 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 JUN 20 PY 1995 VL 446 IS 2 BP 687 EP 691 DI 10.1086/175826 PN 1 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA RC755 UT WOS:A1995RC75500023 ER PT J AU FELDMAN, U SEELY, JF DOSCHEK, GA BROWN, CM PHILLIPS, KJH LANG, J AF FELDMAN, U SEELY, JF DOSCHEK, GA BROWN, CM PHILLIPS, KJH LANG, J TI MORPHOLOGY AND PHYSICAL PARAMETERS FOR 2 LONG-DURATION SOLAR-FLARES - OBSERVATIONS FROM YOHKOH SO ASTROPHYSICAL JOURNAL LA English DT Article DE SUN, FLARES; SUN, X-RAYS, GAMMA RAYS ID X-RAY TELESCOPE; MAGNETIC RECONNECTION; PLASMA; SPECTRA; EVENTS AB We have analyzed the Yohkoh soft X-ray telescope images and Bragg crystal spectrometer spectra of two long-duration X-class events (LDEs), obtained from instruments on the Japanese Yohkoh spacecraft. The two events are a limb flare that occurred on 1992 November 2 near 03 UT and a disk flare that occurred on 1992 February 27 near 10 UT. The spatial resolution of the images is about 2.''5, and the time resolution is 2 s. The emission originates from plasma at temperatures greater than or equal to 10(7) K. The morphology of the LDEs is quite complicated, but the most intense emission consists of a small number of loops (usually one or two prominent loops). The brightest emission regions are located at the tops of loops for most of the flares' duration, as was found in earlier studies of compact flares observed by Yohkoh. In the case of the 1992 November 2 limb flare, the brightening at the loop top is visible for a period of 24 hr after flare onset. This implies that the heating mechanism must act over a period of tens of hours for these long-duration events, that the energy is deposited at the top of the loop, and that the hot plasma is confined at the top of the loop. We derive emission measures and temperatures from the soft X-ray telescope and Bragg crystal spectrometer data. Lower limit estimates of electron density of the bright regions at the loop tops are derived from the morphology of the regions and the emission measures. Fractional ion abundances for highly ionized iron are deduced from the spectrometer data. We relate the Yohkoh observations to previous observations from the solar instruments on the Skylab manned space station. C1 RUTHERFORD APPLETON LAB,DIV ASTROPHYS,DIDCOT OX11 0QX,OXON,ENGLAND. RP FELDMAN, U (reprint author), USN,RES LAB,EO HULBURT CTR SPACE RES,WASHINGTON,DC 20375, USA. NR 22 TC 42 Z9 42 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 JUN 20 PY 1995 VL 446 IS 2 BP 860 EP 876 DI 10.1086/175844 PN 1 PG 17 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA RC755 UT WOS:A1995RC75500041 ER PT J AU DERMER, CD AF DERMER, CD TI ON THE BEAMING STATISTICS OF GAMMA-RAY SOURCES SO ASTROPHYSICAL JOURNAL LA English DT Article DE GALAXIES, ACTIVE; GAMMA RAYS, BURSTS; GAMMA RAYS, THEORY; RADIATION MECHANISMS, NONTHERMAL ID EXTRAGALACTIC RADIO-SOURCES; RADIATION AB The beaming pattern produced by a relativistically moving blob of isotropic nonthermal electrons that Thomson-scatter photons from an external isotropic radiation held goes as D-4+2 alpha. Here D is the Doppler factor, and a is the energy spectral index of the radiation. This differs from the well-known beaming pattern produced by radiation emitted isotropically in the blob frame, which is proportional to D-3+alpha. This result is important for treatments of blazar statistics, beaming constraints, and tests of gamma-ray source models. RP DERMER, CD (reprint author), USN, RES LAB, EO HULBURT CTR SPACE RES, CODE 7653, WASHINGTON, DC 20375 USA. NR 29 TC 165 Z9 165 U1 1 U2 2 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUN 20 PY 1995 VL 446 IS 2 BP L63 EP L66 DI 10.1086/187931 PN 2 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA RC759 UT WOS:A1995RC75900003 ER PT J AU SISKIND, DE CONNOR, BJ ECKMAN, RS REMSBERG, EE TSOU, JJ PARRISH, A AF SISKIND, DE CONNOR, BJ ECKMAN, RS REMSBERG, EE TSOU, JJ PARRISH, A TI AN INTERCOMPARISON OF MODEL OZONE DEFICITS IN THE UPPER-STRATOSPHERE AND MESOSPHERE FROM 2 DATA SETS SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES LA English DT Article ID GRAVITY-WAVES; PHOTOCHEMISTRY; N2O AB We have compared a diurnal photochemical model of ozone with nighttime data from the limb infrared monitor of the stratosphere (LIMS) and ground-based microwave observations. Consistent with previous studies, the model underpredicts the observations by about 10-30%. This agreement is strong confirmation that the model ozone deficit is not simply an artifact of observational error since it is unlikely to occur for two completely different ozone data sets. We have also examined dhe seasonal, altitudinal, and diurnal morphology of the ozone deficit. Both comparisons show a deficit that peaks in the upper stratosphere (2-3 mbar) and goes through a minimum in the lower mesosphere from 1.0 to 0.4 mbar. At lower pressures (< 0.2 mbar) the deficit appears to increase again. The seasonal variation of the deficit is less consistent. The deficit kith respect to the LIMS data is least in winter while with respect to the microwave data, the deficit shows little seasonal variation. Finally, the night-to-day ratio in our model is iii generally good agreement with that seen in the microwave experiment. Increasing the rate coefficient for the reaction O + O-2 + M --> O-3 + M improves the fit, while a very large (50%) decrease in the HOx catalytic cycle is not consistent with our observations. Increasing the atomic oxygen recombination rate also improves the overall agreement with both data sets; however, a residual discrepancy still remains. There appears to be no single chemical parameter which, when modified, can simultaneously resolve both the stratospheric and mesospheric ozone deficits. C1 NASA, LANGLEY RES CTR, DIV ATMOSPHER SCI, HAMPTON, VA 23681 USA. UNIV MASSACHUSETTS, AMHERST, MA 01003 USA. LOCKHEED ENGN & SCI CO, HAMPTON, VA 23666 USA. MILLITECH CORP, DEERFIELD, MA USA. RP SISKIND, DE (reprint author), USN, RES LAB, EO HULBURT CTR SPACE RES, CODE 7641, 4555 OVERLOOK AVE SW, WASHINGTON, DC 20375 USA. NR 45 TC 48 Z9 48 U1 0 U2 3 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 2169-897X J9 J GEOPHYS RES-ATMOS JI J. Geophys. Res.-Atmos. PD JUN 20 PY 1995 VL 100 IS D6 BP 11191 EP 11201 DI 10.1029/95JD00366 PG 11 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA RF051 UT WOS:A1995RF05100012 ER PT J AU BACMEISTER, JT SCHOEBERL, MR SUMMERS, ME ROSENFIELD, JR ZHU, X AF BACMEISTER, JT SCHOEBERL, MR SUMMERS, ME ROSENFIELD, JR ZHU, X TI DESCENT OF LONG-LIVED TRACE GASES IN THE WINTER POLAR VORTEX SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES LA English DT Article ID ATMOSPHERIC TRANSPORT; NUMERICAL ADVECTION; MIDDLE ATMOSPHERE; MODEL; CIRCULATION; OZONE; PARAMETERIZATION; DYNAMICS; RATES AB Recent observations of CH4 and HF from the UARS Halogen Limb Occultation Experiment (HALOE) suggest that vigorous descent occurs within the polar winter vortex with ''mesospheric'' values of CH4 evident down to 30 mbar. This study shows that a highly accurate two-dimensional model advection scheme coupled with a modern radiation scheme, parameterized planetary and gravity wave drag algorithms can produce tracer distributions consistent with HALOE observations. The modeled tracer distribution within the polar vortex is found to be principally dependent on the strength of dynamical drag in the middle atmosphere and the strength of the planetary wave forcing. However, the strong downward transport of tracers at the poles during winter can be disrupted in midwinter by planetary wave mixing. Thus the weaker planetary wave forcing in the southern hemisphere winter allows for a more coherent descent of long-lived tracers from the mesosphere than during the northern hemisphere winter. Multiple-year integrations of the model reveal a general circulation of the stratosphere which lofts tracers to mesospheric altitudes. Material removed from the mesosphere returns to the stratosphere principally within the polar regions. Upward vertical transport of material is found to be enhanced by horizontal planetary wave mixing. C1 UNIV SPACE RES ASSOC, GREENBELT, MD 20771 USA. NASA, GODDARD SPACE FLIGHT CTR, GREENBELT, MD 20771 USA. JOHNS HOPKINS UNIV, BALTIMORE, MD 21218 USA. RP BACMEISTER, JT (reprint author), USN, RES LAB, EO HULBURT CTR SPACE RES, CODE 7641, WASHINGTON, DC 20375 USA. RI Zhu, Xun/C-2097-2016 OI Zhu, Xun/0000-0001-7860-6430 NR 31 TC 43 Z9 43 U1 0 U2 2 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 2169-897X J9 J GEOPHYS RES-ATMOS JI J. Geophys. Res.-Atmos. PD JUN 20 PY 1995 VL 100 IS D6 BP 11669 EP 11684 DI 10.1029/94JD02958 PG 16 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA RF051 UT WOS:A1995RF05100049 ER PT J AU SANDBERG, WC HEYES, DM AF SANDBERG, WC HEYES, DM TI SELF-DIFFUSION IN EQUILIBRIUM AND SHEARED LIQUID-MIXTURES BY MOLECULAR-DYNAMICS SO MOLECULAR PHYSICS LA English DT Article ID SIMPLE FLUIDS; VISCOSITY; COEFFICIENTS; FLOW AB The mass and shear rate, gamma, dependence of the self-diffusion tenser, D, of isotopically substituted Lennard-Jones (LJ) and Weeks-Chandler-Anderson liquids are determined here, for the first time, by non-equilibrium molecular dynamics using the Gaussian thermostatted SLLOD algorithm. The mass and composition dependence of the self-diffusion coefficients of solute and solvent are characterized as a function of mass ratio of the two species and composition at zero shear rate. In a LJ mixture containing 10% of impurity atoms, each of the three diagonal elements D-alpha alpha of the self-diffusion tenser D, increases initially with shear rate, reaches a maximum (which depends on the mass of the solute particle, m(A)), and then decreases with a further increase in shear rate. D(m(A), gamma) can be represented well by a polynomial, up to second order in the reduced shear rate gamma*. The individual D-alpha alpha diverge as the shear rate increases, with diffusion along the flow direction always being the largest. To help interpret the trends in D-alpha alpha, directionally resolved velocity autocorrelation functions and crosscorrelation functions between the momentum of an impurity particle and its surrounding shell are used. C1 UNIV SURREY,DEPT CHEM,GUILDFORD GU2 5XH,SURREY,ENGLAND. RP SANDBERG, WC (reprint author), USN,RES LAB,COMPUTAT PHYS & FLUID DYNAM LAB,WASHINGTON,DC 20375, USA. NR 26 TC 11 Z9 11 U1 0 U2 1 PU TAYLOR & FRANCIS LTD LONDON PI LONDON PA ONE GUNDPOWDER SQUARE, LONDON, ENGLAND EC4A 3DE SN 0026-8976 J9 MOL PHYS JI Mol. Phys. PD JUN 20 PY 1995 VL 85 IS 3 BP 635 EP 649 DI 10.1080/00268979500101351 PG 15 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA RM016 UT WOS:A1995RM01600014 ER PT J AU POREZAG, D PEDERSON, MR AF POREZAG, D PEDERSON, MR TI DENSITY-FUNCTIONAL BASED STUDIES OF TRANSITION-STATES AND BARRIERS FOR HYDROGEN-EXCHANGE AND ABSTRACTION REACTIONS SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID ORBITAL APPROACH; APPROXIMATION; SIMULATIONS; ACCURATE; ENERGY; SYSTEMS; ATOMS C1 TECH UNIV CHEMNITZ, INST PHYS, D-09009 CHEMNITZ, GERMANY. USN, RES LAB, COMPLEX SYST THEORY BRANCH, WASHINGTON, DC 20375 USA. NR 31 TC 55 Z9 55 U1 0 U2 5 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0021-9606 EI 1089-7690 J9 J CHEM PHYS JI J. Chem. Phys. PD JUN 15 PY 1995 VL 102 IS 23 BP 9345 EP 9349 DI 10.1063/1.468801 PG 5 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA RD124 UT WOS:A1995RD12400022 ER PT J AU FRATANTONI, DM JOHNS, WE TOWNSEND, TL AF FRATANTONI, DM JOHNS, WE TOWNSEND, TL TI RINGS OF THE NORTH BRAZIL CURRENT - THEIR STRUCTURE AND BEHAVIOR INFERRED FROM OBSERVATIONS AND A NUMERICAL-SIMULATION SO JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS LA English DT Article ID WESTERN EQUATORIAL ATLANTIC; WARM-CORE RING; CURRENT RETROFLECTION; SEASONAL CYCLE; PACIFIC-OCEAN; EDDIES; EVOLUTION; GULF; MODEL; REGION AB Large anticyclonic rings are shed from the retroflecting North Brazil Current (NBC) near 8 degrees N in the tropical western Atlantic. New subsurface velocity and temperature measurements within three such rings are presented here and are found to be consistent with previous in situ and remotely sensed NBC ring measurements. A high-resolution numerical model of the Atlantic Ocean forced by monthly wind stress and an imposed meridional overturning cell is found to shed NBC rings that approximate those observed. The model rings are more surface-intensified than those observed and somewhat smaller in diameter. Both observed and modeled NBC rings move northwestward along the coast of South America with a speed of 8-16 cm/s, considerably slower than predicted by analytical theories describing westward ring propagation. At least 2-3 rings per year separate from the NBC retroflection. Annually, 1-3 rings translate intact from their formation region near 50 degrees W to the islands of the southeastern Caribbean, where they disintegrate after a lifetime of about 100 days. The volume of fluid trapped within the core of an NBC ring and isolated from external mixing is estimated using potential vorticity as a tracer. The horizontal limits of the trapped core volume closely coincide with the radius of maximum swirl velocity, while the vertical limit of the core is typically less than the subsurface extent of significant swirl velocity. The core volume of a typical observed ring is 3.2 +/- 1.0 x 10(13) m(3). This corresponds to an annualized per-ring mass transport near 1 Sv (10(6) m(3)/s), similar to previous estimates. This study is the first to make use of subsurface temperature and velocity data to compute the volume of the anomalous ring core. NBC rings may be responsible for 3-4 Sv of direct mass transport across the equatorial-tropical gyre boundary or 20-25% of the total upper ocean cross-gyre transport required by the Atlantic meridional overturning cell. Translating NBC rings may contribute 20% of the total meridional heat transport by the ocean at this latitude. C1 USN, RES LAB, DIV OCEAN SENSING & PREDICT, BAY ST LOUIS, MS 39529 USA. RP UNIV MIAMI, ROSENSTIEL SCH MARINE & ATMOSPHER SCI, DIV METEOROL & PHYS OCEANOG, MIAMI, FL 33149 USA. RI Fratantoni, David/C-7121-2011 NR 54 TC 80 Z9 80 U1 0 U2 2 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 2169-9275 EI 2169-9291 J9 J GEOPHYS RES-OCEANS JI J. Geophys. Res.-Oceans PD JUN 15 PY 1995 VL 100 IS C6 BP 10633 EP 10654 DI 10.1029/95JC00925 PG 22 WC Oceanography SC Oceanography GA RD775 UT WOS:A1995RD77500005 ER PT J AU BRAY, NA OCHOA, J KINDER, TH AF BRAY, NA OCHOA, J KINDER, TH TI THE ROLE OF THE INTERFACE IN EXCHANGE THROUGH THE STRAIT OF GIBRALTAR SO JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS LA English DT Article ID MEDITERRANEAN OUTFLOW; SILL; FLOW AB Five cross-strait hydrographic sections repeated several times during the Gibraltar Experiment in 1985-1986 are used to examine the structure of the interface layer between the inflowing Atlantic waters and outflowing Mediterranean waters in the Strait of Gibraltar. The interface is 60-100 m thick, with a strong vertical salinity gradient identified by fitting individual salinity profiles to a piecewise-linear, three-layer model. The interface is deeper, thicker, fresher, and colder on the west end of the strait than in the Narrows, where there is a minimum in thickness and a maximum in salinity gradient. Farther east, the interface thickens again and continues to get saltier, warmer, and shallower. Property variations in ah three layers are also cast in terms of the three principal water types involved in the exchange. The traditional Knudsen model of exchange is extended to three layers, assuming that the interface is a transport-carrying third layer with uniform vertical shear. As much as half of the inflowing or outflowing transport occurs in the interface layer. Transport converges in both the upper and lower layers, implying, over the length of the strait, vertical exchange between layers that is comparable to about half the horizontal exchange. The richness of structure and complexity of interaction between the interface and the upper and lower layers argues against the use of two-layer models to characterize exchange through the Strait of Gibraltar. C1 USN ACAD,DEPT OCEANOG,ANNAPOLIS,MD 21402. CTR INVEST & EDUC SUPER ENSENADA,ENSENADA,BAJA CALIFORNIA,MEXICO. RP BRAY, NA (reprint author), UNIV CALIF SAN DIEGO,SCRIPPS INST OCEANOG,CTR COASTAL STUDIES,9500 GILMAN DR,LA JOLLA,CA 92093, USA. NR 28 TC 72 Z9 73 U1 1 U2 6 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES-OCEANS JI J. Geophys. Res.-Oceans PD JUN 15 PY 1995 VL 100 IS C6 BP 10755 EP 10776 DI 10.1029/95JC00381 PG 22 WC Oceanography SC Oceanography GA RD775 UT WOS:A1995RD77500011 ER PT J AU GUEST, PS GLENDENING, JW DAVIDSON, KL AF GUEST, PS GLENDENING, JW DAVIDSON, KL TI AN OBSERVATIONAL AND NUMERICAL STUDY OF WIND STRESS VARIATIONS WITHIN MARGINAL ICE ZONES SO JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS LA English DT Article ID ATMOSPHERIC BOUNDARY-LAYER; SEA ICE; DRAG COEFFICIENT; OCEAN MODEL; AIRCRAFT OBSERVATIONS; GREENLAND SEA; BERING SEA; HEAT-FLUX; SYSTEM; TEMPERATURE AB Published studies of ocean mesoscale processes in marginal ice zones (MIZs) using numerical coupled ice-ocean models usually assume that the surface wind speed is constant over the model domain and that wind stress variations are simply proportional to surface roughness variations. We show that this assumption is not realistic in most situations because the surface wind stress is also significantly affected by mesoscale pressure variations, by changes in the surface wind vector, and by changes in surface layer stability. Two numerical case studies, utilizing detailed surface and atmospheric measurements, examine the factors affecting small-scale (<5 km) variations in wind stress within MIZs. These case studies and surveyed observational and modeling results demonstrate that wind stress fields are qualitatively different from the surface roughness fields. A realistic wind stress scenario consists of a maximum just inside the ice edge and another maximum in the open ocean. Stress minima occur within the pack ice region away from the MIZ and over grease ice, if present. The effect of the rougher MIZ ice is counteracted when wind stresses over the open ocean are enhanced by large surface heat fluxes over the ocean, by a strong low level inversion over the ice, or by a sharp atmospheric front with surface winds paralleling the ice edge. Such situations are common in MIZ regions. Some simple methods for including first-order atmospheric effects on wind stress variations, which could be incorporated into current ice-ocean mesoscale models of MIZ regions, are suggested. C1 USN,POSTGRAD SCH,DIV MARINE METEOROL,MONTEREY,CA 93940. RP GUEST, PS (reprint author), USN,POSTGRAD SCH,DEPT METEOROL,589 DYER RD,MONTEREY,CA 93940, USA. NR 49 TC 19 Z9 19 U1 0 U2 0 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES-OCEANS JI J. Geophys. Res.-Oceans PD JUN 15 PY 1995 VL 100 IS C6 BP 10887 EP 10904 DI 10.1029/94JC03391 PG 18 WC Oceanography SC Oceanography GA RD775 UT WOS:A1995RD77500019 ER PT J AU PERRY, MD HARRISON, JA AF PERRY, MD HARRISON, JA TI UNIVERSAL ASPECTS OF THE ATOMIC-SCALE FRICTION OF DIAMOND SURFACES SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article ID MOLECULAR-DYNAMICS SIMULATIONS; CHEMICAL-VAPOR-DEPOSITION; LANGMUIR-BLODGETT-FILMS; FORCE MICROSCOPY; MUSCOVITE MICA; TUNGSTEN TIP; GROWTH; ACETYLENE; MECHANISM; CRYSTAL AB Several facets are observed when diamond films are produced by chemical vapor deposition methods. It is unknown, however, if all of these facets exhibit the same atomic-scale frictional behavior. In an effort to determine whether a facet or surface topological dependence of the atomic-scale friction of diamond exists, we have used molecular dynamics simulations to examine the friction which occurs when the (100)-(2 x 1) reconstructed surfaces of two diamond lattices are placed in sliding contact. Calculations are performed as a function of applied load, crystallographic sliding direction, and sliding velocity. Results from these calculations are compared with previous computations performed on a diamond (111) surface. We find that the general dependence of the friction coefficient, mu, on the applied load is similar, regardless of the facet. Indeed, this conclusion is supported by atomic force microscope experiments which have examined the friction of diamond (100) and (111) surfaces [Germann et al., J. Appl. Phys. 1993, 73, 163]. While the friction coefficients, and therefore the amount of energy dissipation, are similar regardless of facet, the atomic-scale motions which lead to energy dissipation differ slightly depending on the facet. C1 USN ACAD,DEPT CHEM,ANNAPOLIS,MD 21402. NR 49 TC 48 Z9 48 U1 0 U2 5 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0022-3654 J9 J PHYS CHEM-US JI J. Phys. Chem. PD JUN 15 PY 1995 VL 99 IS 24 BP 9960 EP 9965 DI 10.1021/j100024a044 PG 6 WC Chemistry, Physical SC Chemistry GA RD471 UT WOS:A1995RD47100044 ER PT J AU VASUDEVAN, AK PRZYSTUPA, MA FRICKE, WG AF VASUDEVAN, AK PRZYSTUPA, MA FRICKE, WG TI EFFECT OF COMPOSITION ON CRYSTALLOGRAPHIC TEXTURE OF HOT-ROLLED AL-LI BINARY-ALLOYS SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING LA English DT Article DE COMPOSITION; CRYSTALLOGRAPHIC TEXTURE; HOT ROLLING; AI-LI BINARY ALLOYS ID POLYCRYSTALLINE FCC METALS; ROLLING TEXTURES; DEFORMATION; MECHANISM AB A series of binary Al-Li alloys were identically hot rolled to study the effects of composition on texture. It was observed that at low Li levels (less than 2 wt.% Li) the alloys tend to be dynamically recrystallized, which gives rise to primary Goss and secondary Cube texture components. Alloys with higher Li levels (greater than 2 wt.% Li) developed a beta fiber texture with maximum intensity at near-Brass location. The transition between the texture types coincided with the start of the formation of delta precipitates during rolling. An increase in the volume fraction of these precipitates reduced the overall texture intensity. The changes in texture resulted in a decrease in the yield strength anisotropy in alloys with 2-3 wt.% Li. This trend agrees qualitatively with the changes in Taylor factors calculated from texture. C1 UNIV CALIF LOS ANGELES,DEPT MAT SCI & ENGN,LOS ANGELES,CA 90024. ALCOA TECH CTR,ALCOA CTR,PA 15069. RP VASUDEVAN, AK (reprint author), OFF NAVAL RES,CODE 332,800 N QUINCY ST,ARLINGTON,VA 22217, USA. NR 28 TC 13 Z9 13 U1 1 U2 4 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0921-5093 J9 MAT SCI ENG A-STRUCT JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process. PD JUN 15 PY 1995 VL 196 IS 1-2 BP 1 EP 8 DI 10.1016/0921-5093(94)09704-6 PG 8 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA RE690 UT WOS:A1995RE69000001 ER PT J AU KEANE, MM RIVEROLEZCANO, OM MITCHELL, JA ROBBINS, KC LIPKOWITZ, S AF KEANE, MM RIVEROLEZCANO, OM MITCHELL, JA ROBBINS, KC LIPKOWITZ, S TI CLONING AND CHARACTERIZATION OF CBL-B - A SH3 BINDING-PROTEIN WITH HOMOLOGY TO THE C-CBL PROTOONCOGENE SO ONCOGENE LA English DT Article DE CBL-B; SK3 PROTEIN INTERACTIONS; MAMMARY CELLS; DIFFERENTIATION ID ACUTE PROMYELOCYTIC LEUKEMIA; MESSENGER-RNA; DNA-BINDING; ZINC FINGER; V-CBL; SACCHAROMYCES-CEREVISIAE; POINT MUTATIONS; RAR-ALPHA; GENE; SEQUENCE AB We have cloned a new gene, cbl-b, with homology to the c-cbl proto-oncogene. A large protein is predicted (approx, MW 108 000) that has a proline rich domain, a nuclear localization signal, a C3HC4 zinc finger and a putative leucine zipper. There is striking nucleotide and amino acid homology to the c-cbl proto-oncogene most notably in the structural motifs described above. Cbl-b is expressed in normal and malignant mammary epithelial cells, in a variety of normal tissues, and in hematopoietic tissue and cell lines. Cbl-b expressions is up-regulated with macrophage/monocyte differentiation of the HL60 and U937 cell lines, There is direct association of the cbl-b protein with the Src Homology 3 domains of several proteins including signaling, cytoskeletal and adaptor proteins. Our data suggest that cbl-b encodes a protein which can interact with signal transduction proteins to regulate their function or to be regulated by them, Together, cbl-b and c-cbl are members of a novel family of proto-oncogenes involved in signal transduction. C1 USN HOSP,NCI,MED ONCOL BRANCH,BETHESDA,MD 20889. NIDR,CELLULAR DEV & ONCOL LAB,BETHESDA,MD 20892. RI Rivero-Lezcano, Octavio/J-9089-2015 OI Rivero-Lezcano, Octavio/0000-0002-8793-0731 NR 43 TC 159 Z9 164 U1 0 U2 4 PU STOCKTON PRESS PI BASINGSTOKE PA HOUNDMILLS, BASINGSTOKE, HANTS, ENGLAND RG21 2XS SN 0950-9232 J9 ONCOGENE JI Oncogene PD JUN 15 PY 1995 VL 10 IS 12 BP 2367 EP 2377 PG 11 WC Biochemistry & Molecular Biology; Oncology; Cell Biology; Genetics & Heredity SC Biochemistry & Molecular Biology; Oncology; Cell Biology; Genetics & Heredity GA RE543 UT WOS:A1995RE54300012 PM 7784085 ER PT J AU LEHECKA, T LEHMBERG, RH DENIZ, AV GERBER, KA OBENSCHAIN, SP PAWLEY, CJ PRONKO, MS SULLIVAN, CA AF LEHECKA, T LEHMBERG, RH DENIZ, AV GERBER, KA OBENSCHAIN, SP PAWLEY, CJ PRONKO, MS SULLIVAN, CA TI PRODUCTION OF HIGH-ENERGY, UNIFORM FOCAL PROFILES WITH THE NIKE LASER SO OPTICS COMMUNICATIONS LA English DT Note ID FUSION; INCOHERENCE AB Nike, a KrF laser facility at the Naval Research Laboratory, is designed to produce high intensity, ultra-uniform focal profiles for experiments relating to direct drive inertial confinement fusion. We present measurements of focal profiles through the next-to-last amplifier, a 20 X 20 cm(2) aperture electron beam pumped amplifier capable of producing more than 120 J of output in a 120 ns pulse. Using echelon free induced spatial incoherence beam smoothing this system has produced focal profiles with less than 2% tilt and curvature and less than 2% rms variation from a flat top distribution. C1 USN,RES LAB,DIV PLASMA PHYS,WASHINGTON,DC 20375. RP LEHECKA, T (reprint author), SCI APPLICAT INT CORP,MS 2-3-1,1710 GOODRIDGE DR,MCLEAN,VA 22102, USA. NR 10 TC 18 Z9 25 U1 0 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0030-4018 J9 OPT COMMUN JI Opt. Commun. PD JUN 15 PY 1995 VL 117 IS 5-6 BP 485 EP 491 DI 10.1016/0030-4018(95)00179-C PG 7 WC Optics SC Optics GA RE542 UT WOS:A1995RE54200017 ER PT J AU GAYEN, SK BILLMERS, RI CONTARINO, VM SQUICCIARINI, MF SCHARPF, WJ YANG, GN HERCZFELD, PR ALLOCCA, DM AF GAYEN, SK BILLMERS, RI CONTARINO, VM SQUICCIARINI, MF SCHARPF, WJ YANG, GN HERCZFELD, PR ALLOCCA, DM TI INDUCED-DICHROISM-EXCITED ATOMIC LINE FILTER AT 532 NM SO OPTICS LETTERS LA English DT Article ID OPTICAL FILTER AB The operation of a narrow-linewidth optical filter based on the 4P(1/2)-->8S(1/2) excited-state transition in potassium vapor is reported. The 4P(1/2) state is excited by a circularly polarized, 769.9-nm, 10-ns pulse from a dye laser. A linearly polarized, time-sequenced, and spatially overlapped probe pulse at 532.33 nm completes the transition to the 8S(1/2) state. The peak filter transmission is similar to 40% with a bandwidth of less than 4 GHz. Corroborative experimental results suggest that the rotation of probe-pulse polarization by an induced circular birefringence is the dominant mechanism behind the filter operation. C1 USN,CTR AIR WARFARE,DIV AIRCRAFT,WARMINSTER,PA 18974. DREXEL UNIV,CTR MICROWAVE LIGHTWAVE ENGN,PHILADELPHIA,PA 19104. AMPAC INC,NORRISTOWN,PA 19403. RP GAYEN, SK (reprint author), STEVENS INST TECHNOL,DEPT PHYS & ENGN PHYS,HOBOKEN,NJ 07030, USA. RI Gayen, Swapan/K-8159-2015; OI Gayen, Swapan/0000-0002-4071-6084 NR 7 TC 24 Z9 24 U1 0 U2 1 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0146-9592 J9 OPT LETT JI Opt. Lett. PD JUN 15 PY 1995 VL 20 IS 12 BP 1427 EP 1429 DI 10.1364/OL.20.001427 PG 3 WC Optics SC Optics GA RD232 UT WOS:A1995RD23200026 PM 19862037 ER PT J AU CHAKRABARTI, K SHARMA, J MATHUR, VK BARKYOUMB, JH AF CHAKRABARTI, K SHARMA, J MATHUR, VK BARKYOUMB, JH TI OPTICAL-PROPERTIES OF RADIATION DEFECT CENTERS INVOLVING SINGLE AND PAIRED MN2+ CENTERS IN CAF2-MN SO PHYSICAL REVIEW B LA English DT Article ID LUMINESCENCE; ABSORPTION; SPECTRA; TRAPS C1 USN,CTR SURFACE WARFARE,SILVER SPRING,MD 20903. NR 21 TC 6 Z9 6 U1 0 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 JUN 15 PY 1995 VL 51 IS 23 BP 16541 EP 16548 DI 10.1103/PhysRevB.51.16541 PG 8 WC Physics, Condensed Matter SC Physics GA RF570 UT WOS:A1995RF57000001 ER PT J AU GAMMON, D RUDIN, S REINECKE, TL KATZER, DS KYONO, CS AF GAMMON, D RUDIN, S REINECKE, TL KATZER, DS KYONO, CS TI PHONON BROADENING OF EXCITONS IN GAAS/ALXGA1-XAS QUANTUM-WELLS SO PHYSICAL REVIEW B LA English DT Article ID SIZE DEPENDENCE; LINEWIDTHS; GAAS; SINGLE; ABSORPTION; INTERFACES; RESONANCE; SPECTRA C1 USA,RES LAB,FT MONMOUTH,NJ 07703. RP GAMMON, D (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. RI Katzer, D. Scott/N-7841-2013 NR 25 TC 83 Z9 83 U1 0 U2 3 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 JUN 15 PY 1995 VL 51 IS 23 BP 16785 EP 16789 DI 10.1103/PhysRevB.51.16785 PG 5 WC Physics, Condensed Matter SC Physics GA RF570 UT WOS:A1995RF57000032 ER PT J AU CHAKARIAN, V IDZERDA, YU MEIGS, G CHABAN, EE PARK, JH CHEN, CT AF CHAKARIAN, V IDZERDA, YU MEIGS, G CHABAN, EE PARK, JH CHEN, CT TI ELEMENT-SPECIFIC VECTOR MAGNETOMETRY WITH MAGNETIC CIRCULAR-DICHROISM SO APPLIED PHYSICS LETTERS LA English DT Article C1 USN,RES LAB,WASHINGTON,DC 20375. AT&T BELL LABS,MURRAY HILL,NJ 07974. NR 10 TC 32 Z9 32 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 JUN 12 PY 1995 VL 66 IS 24 BP 3368 EP 3370 DI 10.1063/1.113760 PG 3 WC Physics, Applied SC Physics GA RC259 UT WOS:A1995RC25900045 ER PT J AU SHLESINGER, MF AF SHLESINGER, MF TI STOCHASTIC-PROCESS WITH ULTRASLOW CONVERGENCE TO A GAUSSIAN - THE TRUNCATED LEVY FLIGHT - COMMENT SO PHYSICAL REVIEW LETTERS LA English DT Note RP SHLESINGER, MF (reprint author), OFF NAVAL RES,DIV CHEM PHYS,800 N QUINCY ST,ARLINGTON,VA 22203, USA. NR 2 TC 21 Z9 21 U1 0 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 12 PY 1995 VL 74 IS 24 BP 4959 EP 4959 DI 10.1103/PhysRevLett.74.4959 PG 1 WC Physics, Multidisciplinary SC Physics GA RC191 UT WOS:A1995RC19100050 ER PT J AU SKIBO, JG DERMER, CD RAMATY, R MCKINELY, JM AF SKIBO, JG DERMER, CD RAMATY, R MCKINELY, JM TI THERMAL COMPTONIZATION IN MILDLY RELATIVISTIC PAIR PLASMAS SO ASTROPHYSICAL JOURNAL LA English DT Article DE GALAXIES, NUCLEI; GALAXIES, SEYFERT; PLASMAS; RADIATION MECHANISMS, NONTHERMAL; RELATIVITY ID ACTIVE GALACTIC NUCLEI; ELECTRON-POSITRON BREMSSTRAHLUNG; X-RAY; SPECTRAL VARIABILITY; GALAXIES; EQUILIBRIUM; LUMINOSITY; CYGNUS-X-1; REFLECTION; RADIATION AB We use a Monte Carlo simulation to calculate the spectra of mildly relativistic thermal plasmas in pair balance. We use the exact integral expression for the electron-positron thermal annihilation spectrum and provide accurate expressions for the Gaunt factors of electron-ion, electron-electron, and electron-positron thermal bremsstrahlung in the transrelativistic temperature regime. The particles are assumed to be uniformly distributed throughout a sphere, and the pair opacity is self-consistently calculated from the energy and angular distribution of scattered photons. The resultant photon spectra are compared with the nonrelativistic diffusion treatment of Sunyaev and Titarchuk, the bridging formulas of Zdziarski, and the relativistic corrections proposed by Titarchuk. We give a corrected formula for the spectral index resulting from Comptonization in the low-temperature, low optical depth regime, and show where the effects of bremsstrahlung production are important in spectral calculations. We calculate allowed pair-balanced states of thermal plasmas with no pair escape which include bremsstrahlung and internal soft photons. The results are presented in the spectral index/compactness plane and can be directly compared with observations of spectra from AGNs and Galactic black hole candidates. By comparing with X-ray spectral indices of Seyfert AGNs and compactnesses inferred from X-ray variability data, we find that the allowed solutions for pair equilibrium plasma imply that the temperatures of Seyfert galaxies are less than or similar to 300 keV. This prediction can be tested with more sensitive gamma-ray observations of Seyfert galaxies. We find that if the X-ray variability timescale gives an accurate measure of the compactness, pair-dominated solutions are inconsistent with the data. C1 NASA, GODDARD SPACE FLIGHT CTR, HIGH ENERGY ASTROPHYS LAB, GREENBELT, MD 20771 USA. RP SKIBO, JG (reprint author), USN, RES LAB, EO HULBURT CTR SPACE RES, CODE 7653, WASHINGTON, DC 20375 USA. NR 57 TC 25 Z9 25 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUN 10 PY 1995 VL 446 IS 1 BP 86 EP 100 DI 10.1086/175770 PN 1 PG 15 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA RF810 UT WOS:A1995RF81000010 ER PT J AU VRBA, FJ HARTMANN, DH JENNINGS, MC AF VRBA, FJ HARTMANN, DH JENNINGS, MC TI DEEP OPTICAL COUNTERPART SEARCHES OF GAMMA-RAY BURST LOCALIZATIONS SO ASTROPHYSICAL JOURNAL LA English DT Article DE GAMMA RAYS, BURSTS; QUASARS, GENERAL; SURVEYS; TECHNIQUES, PHOTOMETRIC ID QSOS; TRANSIENT; CANDIDATES; EVOLUTION; GALAXIES; RADIO; LOCATIONS; MAGNITUDE; PROGRAM; COUNTS AB We report the results of a 5 year CCD imaging program of small gamma-ray burst (GRB) error boxes from the First Interplanetary Network and an optical transient held The fields include GBS 0010-16, GBS 0552-08, GBS 1028 + 46, GBS 1205 + 23, GBS 1412 + 79, OTS 1809 + 31, GBS 2006-22, and GBS 2252-03. A total of 274 hours of open shutter time was used to obtain multiple UBVI-filtered frames covering an area approximately twice that of the 99% confidence localizations. For 2070 objects in these fields above the survey detection limit of V approximate to 24, 79,000 calibrated photometric measurements were made. The objectives of the survey were to search for objects of unusual colors, variability, or proper motions. The final census of objects in these fields is consistent with the expected numbers of normal stars, galaxies, and proper motion objects based on statistics of large-scale surveys. While no obvious GRB optical counterparts were found, several potentially interesting objects were discovered, along with marginal evidence for a QSO excess at the rate of one per high Galactic latitude localization. The results and implications are discussed in detail along with suggestions for future work. C1 CLEMSON UNIV,DEPT PHYS & ASTRON,KINARD LAB PHYS,CLEMSON,SC 29634. RP VRBA, FJ (reprint author), USN OBSERV,FLAGSTAFF STN,POB 1149,FLAGSTAFF,AZ 86002, USA. NR 78 TC 24 Z9 24 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 JUN 10 PY 1995 VL 446 IS 1 BP 115 EP 149 DI 10.1086/175773 PN 1 PG 35 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA RF810 UT WOS:A1995RF81000013 ER PT J AU STURNER, SJ AF STURNER, SJ TI ELECTRON-ENERGY LOSSES NEAR PULSAR POLAR CAPS SO ASTROPHYSICAL JOURNAL LA English DT Article DE ACCELERATION OF PARTICLES; PULSARS, GENERAL; RADIATION MECHANISMS, NONTHERMAL ID TRIPLET PAIR PRODUCTION; STRONG MAGNETIC-FIELDS; SOFT PHOTON FIELD; ULTRARELATIVISTIC ELECTRONS; COMPTON; BEAMS; SCATTERING; EMISSION; SPECTRA AB We present results of a model for the energetics of electrons accelerated by the large electric fields generated by a rotating highly magnetized neutron star. The energy-loss mechanisms we consider in our calculations include magnetic Compton scattering of thermal X-ray photons, triplet pair production, and curvature radiation emission. The electron acceleration mechanism is assumed to operate only to a height above the polar cap approximately equal to the polar cap radius. We find several interesting results. First, magnetic Compton scattering is the dominant energy-loss process when the electron Lorentz factors are less than a few x 10(6) for typical gamma-ray pulsar magnetic fields and surface temperatures measured by ROSAT. The amount of energy converted to photons by accelerated electrons ranges from similar to 10% to similar to 100% of y(0) m(e)c(2), where y(0) is the maximum Lorentz factor an electron can attain with no radiative losses. We also find that if B > 10(13) G and T > 3 x 10(6) K, the Lorentz factors of the electrons can be limited to values less than or similar to 10(3), assuming values for the size of the neutron star thermal polar cap comparable to the polar cap size determined by the open field lines. Such small Lorentz factors may be capable of explaining the gamma-ray emission from PSR 1509-58 which is observed only at energies less than or similar to 1 MeV. We calculated the fraction of the electron's kinetic energy that is converted to gamma rays for the three gamma-ray pulsars which show thermal X-ray spectra, namely, Vela, Geminga, and PSR 1055-52. Using the pulsar parameters derived by Ogelman (1995), we found that we can expect these pulsars to have between similar to 5% (Geminga) and similar to 60% (Vela) of the accelerated electron luminosity converted to gamma-ray luminosity. RP STURNER, SJ (reprint author), USN,RES LAB,EO HULBURT CTR SPACE RES,CODE 7653,WASHINGTON,DC 20375, USA. NR 24 TC 53 Z9 54 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 JUN 10 PY 1995 VL 446 IS 1 BP 292 EP 299 DI 10.1086/175788 PN 1 PG 8 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA RF810 UT WOS:A1995RF81000028 ER PT J AU WANG, YM SHEELEY, NR AF WANG, YM SHEELEY, NR TI IDENTIFICATION OF LOW-LATITUDE CORONAL PLUMES IN EXTREME-ULTRAVIOLET SPECTROHELIOGRAMS SO ASTROPHYSICAL JOURNAL LA English DT Article DE SOLAR WIND; SUN, CORONA; SUN, MAGNETIC FIELDS; SUN, UV RADIATION ID SOLAR-WIND; MAGNETIC-FIELDS; POLAR PLUME; HOLES; MODEL; FLUX AB Using Skylab extreme ultraviolet images of the solar disk, we have identified plumelike features inside low-latitude coronal holes undergoing limb passage. Like their polar counterparts, these diffuse Mg IX structures are located above enhancements in the weak neon and helium background emission within the coronal hole. We conclude that coronal plumes are not unique to the polar regions but may occur in open magnetic regions at any latitude. RP WANG, YM (reprint author), USN,RES LAB,EO HULBURT CTR SPACE RES,CODE 7672,WASHINGTON,DC 20375, USA. NR 32 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 JUN 10 PY 1995 VL 446 IS 1 BP L51 EP L53 DI 10.1086/187928 PN 2 PG 3 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA RF811 UT WOS:A1995RF81100013 ER PT J AU BURTON, NC BUTLER, JE LANG, AR STEEDS, JW AF BURTON, NC BUTLER, JE LANG, AR STEEDS, JW TI ON A CHARACTERISTIC MISORIENTATION STRUCTURE WITHIN (001) FACETS OF CVD-GROWN DIAMOND CRYSTALLITES - AN ANALYSIS BY OPTICAL MICROTOPOGRAPHY, INTERFEROMETRY, ELECTRON-DIFFRACTION AND CATHODOLUMINESCENCE SO PROCEEDINGS OF THE ROYAL SOCIETY-MATHEMATICAL AND PHYSICAL SCIENCES LA English DT Article AB Certain crystallite populations in microwave plasma CVD-grown diamond films contain large octahedral grains oriented with [001] normal to the film and topped by (001) facets several tens of micrometres in edge length. These facets show characteristic growth step patterns and related characteristic cathodoluminescence patterns. Conflict between the interpretation of step patterns and the facet surface profiles determined interferometrically required a quadrantal division of (001) facets by low-angle boundaries for its explanation. Misorientation determination by electron channelling and electron backscatter diffraction techniques confirmed this model; and partially polarized cathodoluminescence attributed to dislocations associated with the low-angle boundaries was observed. Occurrences of this misorientation texture in (001)-faceted CVD-grown crystallites, without restriction to particular growth techniques, are to be expected. C1 USN, RES LAB, WASHINGTON, DC 20375 USA. RP BURTON, NC (reprint author), UNIV BRISTOL, HH WILLS PHYS LAB, TYNDALL AVE, BRISTOL BS8 1TL, AVON, ENGLAND. RI Butler, James/B-7965-2008 OI Butler, James/0000-0002-4794-7176 NR 17 TC 17 Z9 17 U1 0 U2 3 PU ROYAL SOC PI LONDON PA 6-9 CARLTON HOUSE TERRACE, LONDON SW1Y 5AG, ENGLAND SN 0962-8444 J9 P R SOC-MATH PHYS SC JI P. Roy. Soc.-Math. Phys. Sci. PD JUN 8 PY 1995 VL 449 IS 1937 BP 555 EP 566 DI 10.1098/rspa.1995.0058 PG 12 GA RD979 UT WOS:A1995RD97900008 ER PT J AU BOISE, LH MINN, AJ JUNE, CH LINDSTEN, T THOMPSON, CB AF BOISE, LH MINN, AJ JUNE, CH LINDSTEN, T THOMPSON, CB TI GROWTH-FACTORS CAN ENHANCE LYMPHOCYTE SURVIVAL WITHOUT COMMITTING THE CELL TO UNDERGO CELL-DIVISION SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA LA English DT Article ID RECEPTOR GAMMA-CHAIN; T-CELLS; FUNCTIONAL COMPONENT; IL-2 RECEPTOR; INTERLEUKIN-2; EXPRESSION; GENE; PROLIFERATION; ACTIVATION; THYMOCYTES AB Growth factors have been defined by their ability to promote the proliferative expansion of receptor-earing cells. For example, antigen-activated T cells expressing the alpha beta gamma form of the interleukin 2 (IL-2) receptor will proliferate in response to IL-2, In contrast, resting T cells, which express the IL-2 receptor beta and gamma chains, do not proliferate in response to IL-2, We demonstrate that the survival of resting T cells following gamma irradiation is greatly enhanced by pretreatment with IL-2, The radioprotective effect of IL-2 is dose dependent, does not result from the induction ofcell proliferation, and does not require expression of the IL-2 receptor alpha chain, Thus, the beta gamma IL-2 receptor expressed on resting T cells can transduce signals that promote cell survival without committing the T cell to undergo cell division, IL-4 and IL-7, but not IL-1, IL-3, or IL-6, were also found to enhance the survival of quiescent T cells following gamma irradiation, Thus, certain growth factor-receptor interactions can serve to maintain cell viability in a manner that is independent of their ability to initiate or maintain cell proliferation. These data may have important implications for the use of growth factors in patients being treated with radiation and/or chemotherapy. C1 UNIV CHICAGO,GWEN KNAPP CTR,CHICAGO,IL 60637. UNIV CHICAGO,COMM IMMUNOL,CHICAGO,IL 60637. UNIV CHICAGO,HOWARD HUGHES MED INST,CHICAGO,IL 60637. UNIV CHICAGO,DEPT MED,CHICAGO,IL 60637. UNIV CHICAGO,DEPT MOLEC GENET & CELL BIOL,CHICAGO,IL 60637. USN,MED RES INST,BETHESDA,MD 20814. FU PHS HHS [P01 A135294] NR 29 TC 124 Z9 125 U1 0 U2 1 PU NATL ACAD SCIENCES 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 JUN 6 PY 1995 VL 92 IS 12 BP 5491 EP 5495 DI 10.1073/pnas.92.12.5491 PG 5 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA RB804 UT WOS:A1995RB80400049 PM 7777536 ER PT J AU SPRUNT, S SELINGER, JV CRAWFORD, GP RATNA, BR SHASHIDHAR, R AF SPRUNT, S SELINGER, JV CRAWFORD, GP RATNA, BR SHASHIDHAR, R TI NEW FLUCTUATION MODE IN A CHIRAL SMECTIC-A LIQUID-CRYSTAL WITH A UNIAXIAL LAYER MODULATION SO PHYSICAL REVIEW LETTERS LA English DT Article ID PHASE; FIELD RP SPRUNT, S (reprint author), USN,RES LAB,CTR BIOMOLEC SCI & ENGN,WASHINGTON,DC 20375, USA. RI Selinger, Jonathan/D-1445-2010 OI Selinger, Jonathan/0000-0002-4982-2457 NR 16 TC 6 Z9 6 U1 1 U2 2 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 5 PY 1995 VL 74 IS 23 BP 4671 EP 4674 DI 10.1103/PhysRevLett.74.4671 PG 4 WC Physics, Multidisciplinary SC Physics GA RB200 UT WOS:A1995RB20000028 ER PT J AU SABRA, JP AMUNDSON, DE CHIN, CG AF SABRA, JP AMUNDSON, DE CHIN, CG TI WATERMELON STOMACH - AN OBSCURE SOURCE OF BLEEDING SO AMERICAN FAMILY PHYSICIAN LA English DT Letter RP SABRA, JP (reprint author), USN,MED CTR,SAN DIEGO,CA 92132, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER ACAD FAMILY PHYSICIANS PI KANSAS CITY PA 8880 WARD PARKWAY, KANSAS CITY, MO 64114-2797 SN 0002-838X J9 AM FAM PHYSICIAN JI Am. Fam. Physician PD JUN PY 1995 VL 51 IS 8 BP 1821 EP & PG 0 WC Primary Health Care; Medicine, General & Internal SC General & Internal Medicine GA RB381 UT WOS:A1995RB38100005 PM 7762473 ER PT J AU VANDEMARK, B AF VANDEMARK, B TI AFTER TET - THE BLOODIEST YEAR IN VIETNAM - SPECTOR,RH SO AMERICAN HISTORICAL REVIEW LA English DT Book Review RP VANDEMARK, B (reprint author), USN ACAD,ANNAPOLIS,MD 21402, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU AMER HISTORICAL REVIEW PI WASHINGTON PA 400 A ST SE, WASHINGTON, DC 20003 SN 0002-8762 J9 AM HIST REV JI Am. Hist. Rev. PD JUN PY 1995 VL 100 IS 3 BP 975 EP 975 DI 10.2307/2168754 PG 1 WC History SC History GA RJ069 UT WOS:A1995RJ06900157 ER PT J AU LASKIN, WB KNITTEL, DR FRAME, JN AF LASKIN, WB KNITTEL, DR FRAME, JN TI S100 PROTEIN AND HMB-45 NEGATIVE RHABDOID MALIGNANT-MELANOMA - A TOTALLY DEDIFFERENTIATED MALIGNANT-MELANOMA SO AMERICAN JOURNAL OF CLINICAL PATHOLOGY LA English DT Letter C1 USN,NATL MED CTR,DIV MED ONCOL,BETHESDA,MD 20814. RP LASKIN, WB (reprint author), USN,NATL MED CTR,DEPT LAB MED,BETHESDA,MD 20814, USA. NR 3 TC 22 Z9 22 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQUARE, PHILADELPHIA, PA 19106 SN 0002-9173 J9 AM J CLIN PATHOL JI Am. J. Clin. Pathol. PD JUN PY 1995 VL 103 IS 6 BP 772 EP 773 PG 2 WC Pathology SC Pathology GA RC241 UT WOS:A1995RC24100021 PM 7785665 ER PT J AU DOLLEAR, T GOLDBERG, J RAMAKRISHNAN, V BAGGETT, JC MITCHELL, RE AF DOLLEAR, T GOLDBERG, J RAMAKRISHNAN, V BAGGETT, JC MITCHELL, RE TI THE EFFECT OF CAPTIVITY ON LONG-TERM WEIGHT CHANGE IN FORMER VIETNAM PRISONERS OF WAR SO AMERICAN JOURNAL OF EPIDEMIOLOGY LA English DT Meeting Abstract C1 USN,INST AEROSP & OPERAT MED,PENSACOLA,FL 32508. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER J EPIDEMIOLOGY PI BALTIMORE PA 624 N BROADWAY RM 225, BALTIMORE, MD 21205 SN 0002-9262 J9 AM J EPIDEMIOL JI Am. J. Epidemiol. PD JUN 1 PY 1995 VL 141 IS 11 SU S BP S51 EP S51 PG 1 WC Public, Environmental & Occupational Health SC Public, Environmental & Occupational Health GA RA788 UT WOS:A1995RA78800202 ER PT J AU IRWIN, D SAVITZ, D STANDRE, K AF IRWIN, D SAVITZ, D STANDRE, K TI RACE, AGE, AND CESAREAN DELIVERY IN A MILITARY POPULATION SO AMERICAN JOURNAL OF EPIDEMIOLOGY LA English DT Meeting Abstract C1 USN,BUR MED & SURG,WASHINGTON,DC 20024. UNIV N CAROLINA,CHAPEL HILL,NC 27514. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER J EPIDEMIOLOGY PI BALTIMORE PA 624 N BROADWAY RM 225, BALTIMORE, MD 21205 SN 0002-9262 J9 AM J EPIDEMIOL JI Am. J. Epidemiol. PD JUN 1 PY 1995 VL 141 IS 11 SU S BP S50 EP S50 PG 1 WC Public, Environmental & Occupational Health SC Public, Environmental & Occupational Health GA RA788 UT WOS:A1995RA78800196 ER PT J AU HANSEN, KA KILIANSKI, J NEWHALL, K WRIGHT, G STOCK, RJ ARCHER, D AF HANSEN, KA KILIANSKI, J NEWHALL, K WRIGHT, G STOCK, RJ ARCHER, D TI LACK OF MAGAININ-LIKE ACTIVITY IN HUMAN CERVICAL TISSUE SO AMERICAN JOURNAL OF REPRODUCTIVE IMMUNOLOGY LA English DT Article DE INNATE IMMUNITY; IMMUNOHISTOCHEMISTRY; SUBMANDIBULAR GLAND AB PROBLEM: The cervix plays an integral role in innate immunity of the human reproductive tract, Magainins are antimicrobial and spermicidal peptides recently described in human submandibular glands. We investigated the human cervix for magainin-like peptides. METHOD: Histologic sections of frozen and paraffin embedded cervical tissue from nine subjects were separately incubated with two rabbit, polyclonal, anti-magainin antibodies (CB-2 and CB-7) to investigate for magainin-like activity in the human cervix. RESULTS: There was no specific staining of cervical columnar cells within the endocervical canal or in the endocervical crypts. Magainin-like immunoreactivity in the human submandibular gland confirmed previous observations. CONCLUSION: Antigen related to magainin-like peptides were not discovered in the human cervix. C1 USN HOSP,DEPT OBSTET GYNECOL,CAMP LEJEUNE,NC. EASTERN VIRGINIA MED SCH,JONES INST REPROD MED,NORFOLK,VA 23501. USN HOSP,DEPT OBSTET GYNECOL,PORTSMOUTH,VA. RP HANSEN, KA (reprint author), MED COLL GEORGIA,DEPT OBSTET GYNECOL,REPROD ENDOCRINE SECT,AUGUSTA,GA 30912, USA. NR 4 TC 1 Z9 1 U1 0 U2 0 PU MUNKSGAARD INT PUBL LTD PI COPENHAGEN PA 35 NORRE SOGADE, PO BOX 2148, DK-1016 COPENHAGEN, DENMARK SN 8755-8920 J9 AM J REPROD IMMUNOL JI Am. J. Reprod. Immunol. PD JUN PY 1995 VL 33 IS 6 BP 481 EP 484 PG 4 WC Immunology; Reproductive Biology SC Immunology; Reproductive Biology GA RH017 UT WOS:A1995RH01700002 PM 7576122 ER PT J AU BAIRD, JK FRYAUFF, DJ BASRI, H BANGS, MJ SUBIANTO, B WIADY, I PURNOMO LEKSANA, B MASBAR, S RICHIE, TL JONES, TR TJITRA, E WIGNALL, FS HOFFMAN, SL AF BAIRD, JK FRYAUFF, DJ BASRI, H BANGS, MJ SUBIANTO, B WIADY, I PURNOMO LEKSANA, B MASBAR, S RICHIE, TL JONES, TR TJITRA, E WIGNALL, FS HOFFMAN, SL TI PRIMAQUINE FOR PROPHYLAXIS AGAINST MALARIA AMONG NONIMMUNE TRANSMIGRANTS IN IRIAN-JAYA, INDONESIA SO AMERICAN JOURNAL OF TROPICAL MEDICINE AND HYGIENE LA English DT Article ID CHLOROQUINE; RESISTANCE; VIVAX AB A comparison of primaquine versus chloroquine for prophylaxis among nonimmune transmigrants from Java and Ball in the hyperendemic Arso region of Irian Jaya, Indonesia was conducted. Forty-five subjects received 0.5 mg of primaquine base/kg of body weight every other day, and 54 people in the same village received weekly 5 mg of chloroquine base/kg for 16-19 weeks beginning in December 1992. Plasmodium falciparum accounted for 18 of 30 infections with chloroquine, and four of five infections among subjects receiving primaquine. Plasmodium vivax was found in 12 people taking chloroquine but in just one person taking primaquine. The risk of malaria among people taking chloroquine relative to that among subjects taking primaquine was 3.96 (P = 0.014) for P. falciparum and 10.56 (P = 0.012) for P. vivax. Primaquine was better tolerated than chloroquine. The minimal protective efficacy for primaquine prophylaxis was 74% against P. falciparum and 90% against P. vivax among nonimmune children and adults living in Irian Jaya. These findings require confirmation with randomized, double-blinded, and placebo-controlled trials. C1 USN,MED RES UNIT 2,JAKARTA,INDONESIA. PROV HLTH SERV,IRIAN JAYA,INDONESIA. INFECT DIS RES CTR,JAKARTA,INDONESIA. USN,MED RES INST,BETHESDA,MD. NR 20 TC 56 Z9 57 U1 0 U2 1 PU AMER SOC TROP MED & HYGIENE PI MCLEAN PA 8000 WESTPARK DRIVE SUITE 130, MCLEAN, VA 22101 SN 0002-9637 J9 AM J TROP MED HYG JI Am. J. Trop. Med. Hyg. PD JUN PY 1995 VL 52 IS 6 BP 479 EP 484 PG 6 WC Public, Environmental & Occupational Health; Tropical Medicine SC Public, Environmental & Occupational Health; Tropical Medicine GA RK696 UT WOS:A1995RK69600001 PM 7611550 ER PT J AU BASSILY, S HYAMS, KC FOUAD, RA SAMAAN, MD HIBBS, RG AF BASSILY, S HYAMS, KC FOUAD, RA SAMAAN, MD HIBBS, RG TI A HIGH-RISK OF HEPATITIS-C INFECTION AMONG EGYPTIAN BLOOD-DONORS - THE ROLE OF PARENTERAL DRUG-ABUSE SO AMERICAN JOURNAL OF TROPICAL MEDICINE AND HYGIENE LA English DT Article ID VIRUS-INFECTION; NON-A; NON-B; ANTIBODIES; TRANSMISSION AB To determine the prevalence and risk factors of hepatitis C virus (HCV) infection among Egyptian blood donors, 188 consecutive adult blood donors from four hospitals and one temporary donor center located in Cairo, Egypt were evaluated. Sera were tested for HCV antibodies (anti-HCV) using second-generation enzyme-linked immunosorbent assay (ELISA) test kits. Sera that were repeatedly reactive by ELISA were further verified by a second-generation recombinant immunoblot assay (RIBA). Antibodies to HCV were detected by RIBA in 26.6% of the blood donors, which is higher than the 10-19% prevalence of antibody found in other studies of Egyptian blood donors. A history of selling blood (odds ratio [OR] = 12.1) and the use of illicit parenteral drugs (OR = 2.5) were significantly associated with anti-HCV seropositivity after controlling for age and gender. These data indicate that the use of illicit drugs may be one reason for high levels of reported HCV infection among Egyptian blood donors. These findings also indicate that Egyptian blood donors should be screened for anti-HCV and individuals who have a history of drug abuse should be deferred from donating blood. C1 USN,MED RES UNIT 3,CAIRO,EGYPT. USN,MED RES INST,BETHESDA,MD. MINIST HLTH CAIRO,ABBASSIA FEVER HOSP,CAIRO,EGYPT. RI Saad, Magdi/H-5561-2013 OI Saad, Magdi/0000-0003-2111-8115 NR 13 TC 28 Z9 29 U1 0 U2 0 PU AMER SOC TROP MED & HYGIENE PI MCLEAN PA 8000 WESTPARK DRIVE SUITE 130, MCLEAN, VA 22101 SN 0002-9637 J9 AM J TROP MED HYG JI Am. J. Trop. Med. Hyg. PD JUN PY 1995 VL 52 IS 6 BP 503 EP 505 PG 3 WC Public, Environmental & Occupational Health; Tropical Medicine SC Public, Environmental & Occupational Health; Tropical Medicine GA RK696 UT WOS:A1995RK69600005 PM 7541968 ER PT J AU LICHTI, GG BALONEK, T COURVOISIER, TJL JOHNSON, N MCCONNELL, M MCNAMARA, B VONMONTIGNY, C PACIESAS, W ROBSON, EI SADUN, A SCHALINSKI, C SMITH, AG STAUBERT, R STEPPE, H SWANENBURG, BN TURNER, MJL ULRICH, MH WILLIAMS, OR AF LICHTI, GG BALONEK, T COURVOISIER, TJL JOHNSON, N MCCONNELL, M MCNAMARA, B VONMONTIGNY, C PACIESAS, W ROBSON, EI SADUN, A SCHALINSKI, C SMITH, AG STAUBERT, R STEPPE, H SWANENBURG, BN TURNER, MJL ULRICH, MH WILLIAMS, OR TI SIMULTANEOUS AND QUASI-SIMULTANEOUS OBSERVATIONS OF THE CONTINUUM EMISSION OF THE QUASAR-3C-273 FROM RADIO TO GAMMA-RAY ENERGIES SO ASTRONOMY & ASTROPHYSICS LA English DT Article DE GAMMA-RAYS, OBSERVATIONS; QUASARS, INDIVIDUAL (3C 273); INFRARED, GALAXIES; ULTRAVIOLET, GALAXIES; RADIO CONTINUUM, GALAXIES; X-RAYS, GALAXIES ID ACTIVE GALACTIC NUCLEI; X-RAY; RELATIVISTIC JETS; 2-FLOW MODEL; COS-B; H-I; 3C-273; 3C273; VARIABILITY; RADIATION AB From June 15-28, 1991 the Compton Gamma-Ray Observatory (CGRO) observed the radio-loud quasar 3C 273. All four CGRO instruments detected radiation from this quasar in their relevant energy ranges (from 20 keV to 5 GeV). Simultaneous and quasi-simultaneous observations by instruments sensitive at other wavelengths have also been performed. The data from all these observations, spanning the frequency range from 5 10(9) Hz to 8.5 . 10(24) Hz, were collected and analysed. Details of the observations and an overall energy-density spectrum are presented. This spectrum shows three maxima, one in the infrared (IR), one in the UV and another one at low-energy gamma-rays, the latter two having nearly the same strength of 3.1 . 10(46) erg/(s frequency decade) and 2.7 . 10(46) erg/(s frequency decade), respectively. At low-energy gamma-rays a break around 1 MeV (= 2.418 . 10(20) Hz) in the energy-density spectrum is evident. The change of the spectral index between X- and gamma-rays is similar to 0.8. The implications of these simultaneous and quasi-simultaneous observations on some theoretical models are discussed. C1 MAX PLANCK INST EXTRATERR PHYS, D-85748 GARCHING, GERMANY. COLGATE UNIV, DEPT PHYS & ASTRON, HAMILTON, NY 13343 USA. OBSERV GENEVA, CH-1290 SAUVERNY, SWITZERLAND. USN, RES LAB, WASHINGTON, DC 20375 USA. UNIV NEW HAMPSHIRE, INST STUDY EARTH OCEANS & SPACE, DURHAM, NH 03824 USA. NEW MEXICO STATE UNIV, LAS CRUCES, NM 88003 USA. UNIV ALABAMA, DEPT PHYS, HUNTSVILLE, AL 35899 USA. UNIV CENT LANCASHIRE, SCH PHYS & ASTRON, PRESTON PR1 2HE, LANCS, ENGLAND. AGNES SCOTT COLL, BRADLEY OBSERV, DEPT PHYS & ASTROPHYS, DECATUR, GA 30030 USA. INST RADIOASTRON MILLIMETERBEREICH, GRENOBLE, FRANCE. UNIV FLORIDA, DEPT ASTRON, GAINESVILLE, FL 32611 USA. UNIV TUBINGEN, INST ASTRON, D-72076 TUBINGEN, GERMANY. INST RADIOASTRON MILLIMETERBEREICH, E-18012 GRANADA, SPAIN. LAB SPACE RES LEIDEN, 2300 RA LEIDEN, NETHERLANDS. UNIV LEICESTER, DEPT PHYS, LEICESTER LE1 7RH, LEICS, ENGLAND. EUROPEAN SO OBSERV, D-85748 GARCHING, GERMANY. EUROPEAN SPACE AGCY, ESTEC, DEPT SPACE SCI, DIV ASTROPHYS, 2200 AG NOORDWIJK, NETHERLANDS. NR 79 TC 82 Z9 82 U1 0 U2 1 PU EDP SCIENCES S A PI LES ULIS CEDEX A PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE SN 0004-6361 J9 ASTRON ASTROPHYS JI Astron. Astrophys. PD JUN PY 1995 VL 298 IS 3 BP 711 EP 725 PG 15 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA RG130 UT WOS:A1995RG13000011 ER PT J AU MILLER, JA DERMER, CD AF MILLER, JA DERMER, CD TI ABUNDANCE ENHANCEMENTS IN BLACK-HOLE ACCRETION - APPLICATION TO GAMMA-RAY LINE OBSERVATIONS OF THE ORION COMPLEX SO ASTRONOMY & ASTROPHYSICS LA English DT Letter DE GAMMA RAYS, LINES; BLACK HOLE PHYSICS AB We show that stochastic acceleration of a Solar composition plasma in the accretion disk of a black hole can lead to enhancements of energetic C and O relative to H and He. The mechanism whereby this occurs is gyroresonance with cascading Alfven wave turbulence, which preferentially accelerates ions with a low charge to mass (Q/A) ratio. For reasonable conditions found near Solar mass black holes, this can produce enhanced energetic C and O abundances, in accordance with COMPTEL observations of nuclear deexcitation line signatures from the direction of the Orion complex. We predict time-variable line signatures due to variations in the accretion rate, along with a radiation pattern consistent with a point source. C1 USN, RES LAB, EO HULBURT CTR SPACE RES, WASHINGTON, DC 20375 USA. RP MILLER, JA (reprint author), UNIV ALABAMA, DEPT PHYS, HUNTSVILLE, AL 35899 USA. NR 19 TC 11 Z9 11 U1 0 U2 0 PU EDP SCIENCES S A PI LES ULIS CEDEX A PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE SN 0004-6361 J9 ASTRON ASTROPHYS JI Astron. Astrophys. PD JUN PY 1995 VL 298 IS 1 BP L13 EP L16 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA RD584 UT WOS:A1995RD58400004 ER PT J AU STURNER, SJ DERMER, CD MICHEL, FC AF STURNER, SJ DERMER, CD MICHEL, FC TI MAGNETIC COMPTON-INDUCED PAIR CASCADE MODEL FOR GAMMA-RAY PULSARS SO ASTROPHYSICAL JOURNAL LA English DT Article DE ACCELERATION OF PARTICLES; GAMMA RAYS, THEORY; PULSARS, GENERAL; RADIATION MECHANISMS, NONTHERMAL; STARS, NEUTRON ID RAPIDLY SPINNING PULSARS; ENERGETIC RADIATION; POLAR CAPS; X-RAYS; EMISSION; GEMINGA; FIELDS; BEAMS; GAPS; CRAB AB Electrons accelerated to relativistic energies in pulsar magnetospheres will Compton scatter surface thermal emission and nonthermal optical, UV, and soft X-ray emission to gamma-ray energies, thereby initiating a pair cascade through synchrotron radiation and magnetic pair production. This process is proposed as the origin of the high-energy radiation that has been detected from six isolated pulsars. We construct an analytic model of magnetic Compton scattering near the polar cap of isolated pulsar magnetospheres and present approximate analytic derivations for scattered spectra, electron energy-loss rates, and photon luminosities. A Monte Carlo simulation is used to model the pair cascade induced by relativistic electrons scattering photons through the cyclotron resonance. For simplicity, the primary electrons are assumed to be monoenergetic and the nonresonant emission is omitted. Assuming that the angle phi(B) between the magnetic and spin axes is approximately equal to the polar-cap angle theta(pc), this model can produce both double-peaked and broad single-peaked pulse profiles and account for the trend of harder gamma-ray spectra observed from older pulsars. C1 RICE UNIV, DEPT SPACE PHYS & ASTRON, HOUSTON, TX 77251 USA. RP STURNER, SJ (reprint author), USN, RES LAB, EO HULBURT CTR SPACE RES, CODE 7653, WASHINGTON, DC 20375 USA. NR 67 TC 90 Z9 92 U1 0 U2 2 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUN 1 PY 1995 VL 445 IS 2 BP 736 EP 755 DI 10.1086/175736 PN 1 PG 20 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA RA625 UT WOS:A1995RA62500020 ER PT J AU BOYD, PT CARTER, PH GILMORE, R DOLAN, JF AF BOYD, PT CARTER, PH GILMORE, R DOLAN, JF TI NONPERIODIC VARIATIONS IN ASTROPHYSICAL SYSTEMS - INVESTIGATING FREQUENCY EVOLUTION SO ASTROPHYSICAL JOURNAL LA English DT Article DE CELESTIAL MECHANICS, STELLAR DYNAMICS; STARS, INDIVIDUAL (HD 60535); STARS, OSCILLATIONS; STARS, PECULIAR; METHODS, ANALYTICAL ID RAPIDLY OSCILLATING PECULIAR; SINGLE STAR SCATTERING; EQUAL MASSES; AP STARS; HD-60435; ENCOUNTERS AB We present a method related to the wavelet transform, the Gabor transform, for investigating astronomical time series containing nonconstant frequencies. Instances in which such data sets may arise include variable star light curves, numerical studies of the gravitational three-body problem, X-ray binaries, and signals from more exotic objects such as planets around pulsars and mass infall from accretion structures onto compact objects. As an illustration of its power, we apply the technique to a numerical data set of a gravitational three-body interaction and to photometry of the rapidly oscillating peculiar A star HD 60435. In the three-body example, the method provides an insightful shorthand that allows for the determination of episodes where the system behaves as two nearly Keplerian orbits. For HD 60435, the power in the main frequency exhibits unusual evolution over the duration of the observation. C1 USN, CTR SURFACE WARFARE, WHITE OAK, MD 20903 USA. DREXEL UNIV, DEPT PHYS & ATMOSPHER SCI, PHILADELPHIA, PA 19104 USA. NASA, GODDARD SPACE FLIGHT CTR, ASTRON & SOLAR PHYS LAB, GREENBELT, MD 20771 USA. RP BOYD, PT (reprint author), UNIV SPACE RES ASSOC, WASHINGTON, DC 20036 USA. RI Boyd, Patricia/D-3274-2012 NR 34 TC 7 Z9 7 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUN 1 PY 1995 VL 445 IS 2 BP 861 EP 871 DI 10.1086/175746 PN 1 PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA RA625 UT WOS:A1995RA62500030 ER PT J AU SHAPPELL, SA AF SHAPPELL, SA TI NAVAL FLIGHT DECK INJURIES - A REVIEW OF NAVAL-SAFETY-CENTER DATA, 1977-91 SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Note AB A comprehensive review of injuries sustained by personnel working on naval flight decks between January 1977 and December 1991 was conducted using database records maintained at the U.S. Naval Safety Center, Norfolk, VA. Data included ail fatalities, permanent total disabilities, permanent partial disabilities, and major injuries resulting in 5 or more lost work days. Injuries were coded using ICD-9-CM codes for analysis. A total of 918 flight deck personnel were reported injured during this 15-yr period, including 43 fatalities, 5 permanent total disabilities, 42 permanent partial disabilities, and 828 major injuries. Of the non-fatalities, a plethora of fractures, traumatic amputations, major lacerations, dislocations, contusions, concussions, burns, crushing injuries, sprains, and strains were reported. Nearly all naval platforms with a flight deck reported an injury. While an average of 51 injuries per 100,000 aircraft recoveries were reported annually on aircraft carriers from 1977-86, a marked reduction to a rate of roughly 30 injuries was observed annually from 1987-90. What makes injuries sustained on the flight deck particularly disconcerting is that over 90% can be attributed to human causal factors. RP SHAPPELL, SA (reprint author), USN,US ATLANTIC FLEET,CODE N02M3,1279 FRANKLIN ST,NORFOLK,VA 23511, USA. NR 3 TC 5 Z9 5 U1 0 U2 0 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD JUN PY 1995 VL 66 IS 6 BP 590 EP 595 PG 6 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA RB018 UT WOS:A1995RB01800013 PM 7646412 ER PT J AU SMITH, DR WEINBECK, RS GEER, IW SNOW, JT GINGER, KM MORAN, JM AF SMITH, DR WEINBECK, RS GEER, IW SNOW, JT GINGER, KM MORAN, JM TI 1994 ANIS PROJECT ATMOSPHERE SUMMER PROGRAMS FOR TEACHERS SO BULLETIN OF THE AMERICAN METEOROLOGICAL SOCIETY LA English DT Article ID WORKSHOP AB Project ATMOSPHERE, the K-12 educational program of the American Meteorological Society, has been involved in teacher enhancement for four years. Summer workshops for teachers have been a primary component of the AMS K-12 educational initiatives since its inception. During the summer of 1994, Project ATMOSPHERE conducted four workshops: two of the workshops were for teachers in the Atmospheric Education Resource Agent program; another was for K-12 teachers, including one teacher each from Canada and Australia; and the fourth was for faculty members at community colleges or four-year undergraduate institutions. These workshops provide teachers at all levels with instruction on a variety of atmospheric topics, an introduction to the operational and research activities of the meteorological community, and exposure to atmospheric scientists and their facilities. Such workshops provide enriching experiences for educators who teach about weather and climate topics in their science classrooms. C1 SUNY COLL BROCKPORT,DEPT EARTH SCI,BROCKPORT,NY. AMER METEOROL SOC,WASHINGTON,DC. UNIV OKLAHOMA,COLL GEOSCI,NORMAN,OK. UNIV WISCONSIN,COLL ENVIRONM SCI,GREEN BAY,WI. RP SMITH, DR (reprint author), USN ACAD,DEPT OCEANOG,572 HOLLOWAY RD,ANNAPOLIS,MD 21402, USA. NR 7 TC 1 Z9 1 U1 0 U2 0 PU AMER METEOROLOGICAL SOC PI BOSTON PA 45 BEACON ST, BOSTON, MA 02108-3693 SN 0003-0007 J9 B AM METEOROL SOC JI Bull. Amer. Meteorol. Soc. PD JUN PY 1995 VL 76 IS 6 BP 945 EP 950 PG 6 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA RG210 UT WOS:A1995RG21000007 ER PT J AU HOLLOWAY, SK TOMLINSON, R AF HOLLOWAY, SK TOMLINSON, R TI THE NEW-WORLD ORDER AND THE GENERAL-ASSEMBLY - BLOC REALIGNMENT AT THE UN IN THE POST-COLD-WAR WORLD SO CANADIAN JOURNAL OF POLITICAL SCIENCE-REVUE CANADIENNE DE SCIENCE POLITIQUE LA English DT Article ID UNITED-NATIONS AB The demise of the Cold War and greater cooperation among the Security Council's permanent members have created a situation frequently characterized as a New World Order at the United Nations. This study examines whether that characterization can also be applied to the politics of the UN General Assembly. Using descriptive analysis of roll-call votes, the authors find that recent sessions, and in particular the 46th session, witnessed the end of a fairly stable decade of voting blocs in the General Assembly. An indicator of vote changing is developed which documents the rapid movement of the former Warsaw Pact members and Baltic states towards more western European positions. Hierarchical cluster and multidimensional scaling analyses are employed to identify the emerging voting alliances. The results suggest that the accommodation has not been as widespread in the General Assembly and that our longstanding conceptualizations of east/west/north/south polarizations are in need of revision. C1 USN ACAD,ANNAPOLIS,MD 21401. RP HOLLOWAY, SK (reprint author), ST FRANCIS XAVIER UNIV,DEPT POLIT SCI,ANTIGONISH,NS B2G 2W5,CANADA. NR 17 TC 9 Z9 9 U1 1 U2 4 PU WILFRID LAURIER UNIV PRESS PI WATERLOO ONTARIO PA 75 UNIVERSITY AVENUE WEST, WATERLOO ONTARIO N2L 3C5, CANADA SN 0008-4239 J9 CAN J POLIT SCI JI Can. J. Polit. Sci.-Rev. Can. Sci. Polit. PD JUN PY 1995 VL 28 IS 2 BP 227 EP 254 PG 28 WC Political Science SC Government & Law GA RL930 UT WOS:A1995RL93000002 ER PT J AU HYAMS, KC HANSON, K WIGNALL, FS ESCAMILLA, J OLDFIELD, EC AF HYAMS, KC HANSON, K WIGNALL, FS ESCAMILLA, J OLDFIELD, EC TI THE IMPACT OF INFECTIOUS-DISEASES ON THE HEALTH OF US TROOPS DEPLOYED TO THE PERSIAN-GULF DURING OPERATION-DESERT-SHIELD AND OPERATION-DESERT-STORM SO CLINICAL INFECTIOUS DISEASES LA English DT Article ID CHRONIC FATIGUE SYNDROME; CHRONIC MONONUCLEOSIS; RESPIRATORY-DISEASE; MILITARY PERSONNEL; LEISHMANIA-TROPICA; SAUDI-ARABIA; SHIGELLOSIS; DIARRHEAL; OUTBREAK; KUWAIT AB An assessment was conducted of the impact of infectious diseases on the 697,000 U.S. troops deployed to the Persian Gulf during 1990-1991 in Operations Desert Shield and Desert Storm. The incidence of nonbattle injuries, including infectious diseases, during this conflict was lower than during previous wars involving U.S. military personnel. The major reported causes of morbidity were generally mild cases of acute diarrheal and upper respiratory disease. The most unexpected outcome was the lack of arboviral infections, particularly sandfly fever, and the occurrence among U.S. troops of 12 cases of visceral leishmaniasis due to Leishmania tropica. The fact that infectious diseases were not a major cause of lost manpower, in sharp contrast to the experience among military personnel in World War II, can be attributed to a combination of factors: the presence of a comprehensive infrastructure of medical care, extensive preventive medicine efforts, and several fortuitous circumstances. Beneficial conditions that may not be present in future conflicts in this region include isolation of most combat troops to barren desert locations during the cooler, winter months, which provided the least favorable conditions for transmission of arthropod-borne diseases. C1 USN, MED RES INST, DIV EPIDEMIOL, BETHESDA, MD USA. OFF I MARINE EXPEDITIONARY FORCE SURGEON, CAMP PENDLETON, CA USA. USN, MED RES UNIT 2, JAKARTA, INDONESIA. USN, ENVIRONM & PREVENT MED UNIT 6, HONOLULU, HI USA. EASTERN VIRGINIA MED SCH, DIV INFECT DIS, NORFOLK, VA 23501 USA. NR 72 TC 85 Z9 87 U1 1 U2 4 PU OXFORD UNIV PRESS INC PI CARY PA JOURNALS DEPT, 2001 EVANS RD, CARY, NC 27513 USA SN 1058-4838 EI 1537-6591 J9 CLIN INFECT DIS JI Clin. Infect. Dis. PD JUN PY 1995 VL 20 IS 6 BP 1497 EP 1504 PG 8 WC Immunology; Infectious Diseases; Microbiology SC Immunology; Infectious Diseases; Microbiology GA RD668 UT WOS:A1995RD66800007 PM 7548499 ER PT J AU CLAPPER, MF OBRIEN, TJ LYONS, PM AF CLAPPER, MF OBRIEN, TJ LYONS, PM TI FRACTURES OF THE 5TH METATARSAL - ANALYSIS OF A FRACTURE REGISTRY SO CLINICAL ORTHOPAEDICS AND RELATED RESEARCH LA English DT Article AB To understand better the natural history of fractures of the fifth metatarsal, a fracture registry was established consisting of patients who had acute fractures of the fifth metatarsal. The first 100 patients were studied to develop data on the natural history of injuries to this bone, and on the results of standard treatment for those injuries. In this study, 3 fracture subtypes were identified: avulsion, true Jones' fracture, and shaft/neck fracture. Avulsion fractures healed without immobilization, usually in 4 weeks, Shaft/neck fractures healed in plaster casts with weight bearing as tolerated in 4 to 6 weeks. True Jones' fractures required a prolonged time to heal when treated with 8 weeks of nonweight bearing and then weight bearing as tolerated in a cast. This method was, however, successful in 72% of patients (average time until union, 21.2 weeks). For the 7 patients in whom conservative treatment failed, surgical fixation at an average of 25 weeks after injury reliably achieved bony union in half the time required with cast treatment. This low-risk procedure met with higher patient satisfaction than prolonged casting. C1 USN HOSP,DEPT ORTHOPAED,PENSACOLA,FL. USN HOSP,DEPT ORTHOPAED,CORPUS CHRISTI,TX. RP CLAPPER, MF (reprint author), USN,MED CTR,DEPT ORTHOPAED,SAN DIEGO,CA 92134, USA. NR 7 TC 83 Z9 84 U1 0 U2 5 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQUARE, PHILADELPHIA, PA 19106 SN 0009-921X J9 CLIN ORTHOP RELAT R JI Clin. Orthop. Rel. Res. PD JUN PY 1995 IS 315 BP 238 EP 241 PG 4 WC Orthopedics; Surgery SC Orthopedics; Surgery GA RC035 UT WOS:A1995RC03500027 PM 7634674 ER PT J AU LEWIS, T AF LEWIS, T TI WHERE THE BIG MONEY IS SO COMPUTER LA English DT Article RP LEWIS, T (reprint author), USN,POSTGRAD SCH,CODE CS,MONTEREY,CA 93943, 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 0018-9162 J9 COMPUTER JI Computer PD JUN PY 1995 VL 28 IS 6 BP 6 EP 7 DI 10.1109/2.471166 PG 2 WC Computer Science, Hardware & Architecture; Computer Science, Software Engineering SC Computer Science GA RC385 UT WOS:A1995RC38500005 ER PT J AU KERNEY, PJ NISENOFF, M AF KERNEY, PJ NISENOFF, M TI WORKSHOP ON CRYOGENIC PACKAGING OF HIGH-TEMPERATURE SUPERCONDUCTING (HTS) ELECTRONIC DEVICES - MARRIOTT COOLEY SQUARE HOTEL, BOSTON, MA, USA, 16 OCTOBER 1994 SO CRYOGENICS LA English DT Editorial Material C1 USN,RES LAB,WASHINGTON,DC 20375. RP KERNEY, PJ (reprint author), HELIX TECHNOL CORP,CTI CRYOGEN,MANSFIELD,MA, USA. NR 0 TC 3 Z9 3 U1 0 U2 1 PU BUTTERWORTH-HEINEMANN LTD PI OXFORD PA LINACRE HOUSE JORDAN HILL, OXFORD, OXON, ENGLAND OX2 8DP SN 0011-2275 J9 CRYOGENICS JI Cryogenics PD JUN PY 1995 VL 35 IS 6 BP 405 EP 406 DI 10.1016/0011-2275(95)99822-P PG 2 WC Thermodynamics; Physics, Applied SC Thermodynamics; Physics GA RF609 UT WOS:A1995RF60900008 ER PT J AU MASTELLER, EL LARSEN, RD CARLSON, LM PICKEL, JM NICKOLOFF, B LOWE, J THOMPSON, CB LEE, KP AF MASTELLER, EL LARSEN, RD CARLSON, LM PICKEL, JM NICKOLOFF, B LOWE, J THOMPSON, CB LEE, KP TI CHICKEN B-CELLS UNDERGO DISCRETE DEVELOPMENTAL-CHANGES IN SURFACE CARBOHYDRATE STRUCTURE THAT APPEAR TO PLAY A ROLE IN DIRECTING LYMPHOCYTE MIGRATION DURING EMBRYOGENESIS SO DEVELOPMENT LA English DT Article DE AVIAN B CELL DEVELOPMENT; LYMPHOCYTE MIGRATION; SIALYL LEWIS X; BURSA OF FABRICIUS; CHICK; CARBOHYDRATE ID DIFFERENTIAL REGULATION; EMBRYONIC BURSA; STEM-CELLS; FABRICIUS; GENE; REARRANGEMENT; ONTOGENY; ANTIGEN; RECIRCULATION; EXPRESSION AB The migration of progenitor cells to specific microenvironments is essential for the development of complex organisms. Avian species possess a unique primary lymphoid organ, the bursa of Fabricius, that plays a central role in the development of B cells. B cell progenitors, however, arise outside the bursa of Fabricius and, during embryonic development, must migrate through the vasculature to the bursa of Fabricius. In this report, we demonstrate that these progenitor B cells express the sialyl Lewis x carbohydrate structure previously shown to be a ligand for the selectin family of vascular adhesion receptors. Soon after migration to the bursa of Fabricius, B cell progenitors are induced to undergo a developmental switch and terminate the expression of sialyl Lewis x in a temporal pattern that correlates with the developmental decline in the ability of these cells to home to the bursa of Fabricius upon transplantation. The induction of the developmental switch in the glycosylation pattern of developing B cells requires the bursal environment, In addition, sialyl Lewis x carbohydrate determinants or structurally similar determinants on the surface of immortalized bursal lymphoid stem cells participate in the adherence of these cells to the vascular regions of the bursal microenvironment, These data demonstrate that the carbohydrate structure sialyl Lewis x is developmentally regulated during chicken B cell development and may facilitate the migration of B cell progenitors to the bursal microenvironment by serving as a ligand for a lectin-like adhesion receptor. C1 UNIV CHICAGO,HOWARD HUGHES MED INST,DEPT MOLEC GENET & CELL BIOL,DEPT MED,CHICAGO,IL 60637. USN,MED RES INST,IMMUNE CELL BIOL PROGRAM,BETHESDA,MD 20889. UNIFORMED SERV UNIV HLTH SCI,BETHESDA,MD 20889. NCI,FREDERICK CANC RES & DEV CTR,FREDERICK,MD 21701. NIAID,BETHESDA,MD 20892. GLYCOMED INC,ALAMEDA,CA 94501. UNIV MICHIGAN,DEPT MICROBIOL & IMMUNOL,ANN ARBOR,MI 48109. UNIV MICHIGAN,DEPT PATHOL,ANN ARBOR,MI 48109. UNIV MICHIGAN,HOWARD HUGHES MED INST,ANN ARBOR,MI 48109. FU NCI NIH HHS [R37CA48023] NR 37 TC 32 Z9 32 U1 0 U2 1 PU COMPANY OF BIOLOGISTS LTD PI CAMBRIDGE PA BIDDER BUILDING CAMBRIDGE COMMERCIAL PARK COWLEY RD, CAMBRIDGE, CAMBS, ENGLAND CB4 4DL SN 0950-1991 J9 DEVELOPMENT JI Development PD JUN PY 1995 VL 121 IS 6 BP 1657 EP 1667 PG 11 WC Developmental Biology SC Developmental Biology GA RD802 UT WOS:A1995RD80200010 PM 7600983 ER PT J AU BLANK, DA WU, C AF BLANK, DA WU, C TI POWER OPTIMIZATION OF AN EXTRATERRESTRIAL, SOLAR-RADIANT STIRLING HEAT ENGINE SO ENERGY LA English DT Article AB The power output and thermal efficiency of a finite-time, optimized, extra-terrestrial, solar-radiant Stirling heat engine have been studied. The thermodynamic model adopted is a regenerative gas Stirling cycle coupled to a heat source and heat sink by radiant heat transfer. Both the heat source and sink are assumed to have infinite heat-capacity rates. Expressions are obtained for optimum power and efficiency at optimum power for a cycle based on higher and lower temperature bounds. C1 USN ACAD,DEPT MECH ENGN,ANNAPOLIS,MD 21402. NR 14 TC 28 Z9 29 U1 0 U2 2 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0360-5442 J9 ENERGY JI Energy PD JUN PY 1995 VL 20 IS 6 BP 523 EP 530 DI 10.1016/0360-5442(94)00092-H PG 8 WC Thermodynamics; Energy & Fuels SC Thermodynamics; Energy & Fuels GA RB884 UT WOS:A1995RB88400005 ER PT J AU LEAN, JL WHITE, OR SKUMANICH, A AF LEAN, JL WHITE, OR SKUMANICH, A TI ON THE SOLAR ULTRAVIOLET SPECTRAL IRRADIANCE DURING THE MAUNDER MINIMUM SO GLOBAL BIOGEOCHEMICAL CYCLES LA English DT Article ID SUNS RADIATIVE OUTPUT; FLUX VARIATIONS; UV FLUX; OZONE CHANGE; K-LINE; CLIMATE; CYCLE; VARIABILITY; INSTRUMENT; MODEL AB In the historical record of solar activity the period from 1645 to 1715 is a singular epoch during which the number of sunspots decreased markedly for a generation. Known as the Maunder Minimum, this solar epoch coincided with the coldest part of the Little Ice Age (circa 1450 to 1850). We estimate the change at this time in the output of solar ultraviolet (UV) radiation at wavelengths from 120 to 300 nm, relative to contemporary observations. Since this portion of the solar UV spectrum determines ozone composition in the stratosphere, our results bear on the historical variability of ozone and its potential climatic effects. Between the Maunder Minimum and 1986 (the present day solar activity minimum between cycles 21 and 22) we estimate reductions of 64% in the irradiance of the Lyman alpha line of neutral hydrogen (at 121.6 nm), 8% at 200 nm, and 3.5% in the wavelength range from 210 to 250 mt. The reduction in the solar output from the entire spectral band between 120 and 300 nm is estimated to be 0.17 W/m(2), which is approximately 6% of the change in the total Solar irradiance of 2.7 W/m(2) previously estimated by us (Lean et al., 1992a) over the same time span. Because of this diminished UV output due to very low solar activity the Maunder Minimum total ozone concentration may have been 4% below its 1980 level. While the climatic consequences of such a change have yet to be determined, recent work by Haigh (1994) on modulation of radiative climate forcing by stratospheric ozone emphasizes the need to understand the role of UV irradiance variability as one forcing mechanism. C1 NATL CTR ATMOSPHER RES,HIGH ALTITUDE OBSERV,BOULDER,CO 80307. RP LEAN, JL (reprint author), USN,RES LAB,EO HULBURT CTR SPACE RES,CODE 7673L,WASHINGTON,DC 20375, USA. OI Lean, Judith/0000-0002-0087-9639 NR 66 TC 28 Z9 28 U1 0 U2 3 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0886-6236 J9 GLOBAL BIOGEOCHEM CY JI Glob. Biogeochem. Cycle PD JUN PY 1995 VL 9 IS 2 BP 171 EP 182 DI 10.1029/95GB00159 PG 12 WC Environmental Sciences; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences SC Environmental Sciences & Ecology; Geology; Meteorology & Atmospheric Sciences GA TE974 UT WOS:A1995TE97400001 ER PT J AU DOLL, TJ HANNA, TE AF DOLL, TJ HANNA, TE TI SPATIAL AND SPECTRAL RELEASE FROM MASKING IN 3-DIMENSIONAL AUDITORY DISPLAYS SO HUMAN FACTORS LA English DT Article ID NOISE; FILTER; LEVEL AB The extent to which simultaneous sounds in three-dimensional (3D) auditory displays mask one another was examined as a function of their spectral proximity and spatial separation. A tonal signal of either 0.5 or 4 kHz was presented at 0 deg azimuth in the horizontal plane of the listener's head. Spectral proximity was varied by centering a notched-noise masker on the signal frequency and varying the notch width. The masker was presented at an azimuth of 0, 20, or 40 deg, and the listener's head was immobilized. Detection levels decreased with both masker notch width and spatial separation. Analysis of the results shows that spatial separation produces both a broadening of the band over which masking is effective and a decrease in the minimum signal-to-noise ratio needed to detect the signal at all notch widths. Both effects were greater at 0.5 kHz than at 4 kHz. Additional experiments showed that these mechanisms are disrupted when two maskers are positioned symmetrically around the signal and head. The results are interpreted in terms of the effects of spatial separation on binaural processing and the listener's ability to resolve the signal and masker in frequency. C1 USN,SUBMARINE MED RES LAB,DEPT SUBMARINE SYST,GROTON,CT. RP DOLL, TJ (reprint author), GEORGIA INST TECHNOL,GEORGIA TECH RES INST,ATLANTA,GA 30332, USA. NR 28 TC 11 Z9 17 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 JUN PY 1995 VL 37 IS 2 BP 341 EP 355 DI 10.1518/001872095779064573 PG 15 WC Behavioral Sciences; Engineering, Industrial; Ergonomics; Psychology, Applied; Psychology SC Behavioral Sciences; Engineering; Psychology GA RN919 UT WOS:A1995RN91900010 ER PT J AU DAMOS, DL CARTER, RC AF DAMOS, DL CARTER, RC TI INFORMATION-PROCESSING SLOPE SCORES CAN BE RELIABLE SO HUMAN FACTORS LA English DT Article ID RELIABILITY AB Several recently published articles imply that slope and difference scores may be unreliable. We present data from a mental rotation experiment that demonstrate high test-retest reliabilities for slope scores. We develop a formula that may be used to estimate intersession reliabilities for slope scores and discuss practical steps to ensure that high reliabilities may be obtained. C1 USN MED SERV CORPS,MED RES & DEV COMMAND,BETHESDA,MD 20814. RP DAMOS, DL (reprint author), UNIV SO CALIF,INST SAFETY & SYST MANAGEMENT,LOS ANGELES,CA 90089, USA. NR 12 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 JUN PY 1995 VL 37 IS 2 BP 424 EP 429 DI 10.1518/001872095779064591 PG 6 WC Behavioral Sciences; Engineering, Industrial; Ergonomics; Psychology, Applied; Psychology SC Behavioral Sciences; Engineering; Psychology GA RN919 UT WOS:A1995RN91900016 ER PT J AU KEMPEL, LC VOLAKIS, JL SLIVA, RJ AF KEMPEL, LC VOLAKIS, JL SLIVA, RJ TI RADIATION BY CAVITY-BACKED ANTENNAS ON A CIRCULAR-CYLINDER SO IEE PROCEEDINGS-MICROWAVES ANTENNAS AND PROPAGATION LA English DT Article DE MICROSTRIP ANTENNAS; CONFORMAL ANTENNA ARRAYS ID RECTANGULAR PATCH ANTENNA; MICROSTRIP ANTENNAS AB Conformal antenna arrays are popular for deployment on curved aircraft, spacecraft and land-vehicle platforms because of their inherent low weight, cost and drag properties. The finite element-boundary integral method is extended to radiation by cavity-backed structures recessed in an infinite, metallic cylinder. The accuracy of the developed FE-BI code for a microstrip patch array is established by comparison with measurements. The formulation is then used to investigate the effect of the finite aperture on the radiation pattern. In addition, the effect of curvature on resonant frequency, gain, input impedance and pattern shape is examined. C1 UNIV MICHIGAN,RADIAT LAB,ANN ARBOR,MI 48109. USN,CTR AIR WARFARE,CHINA LAKE,CA 93555. RP KEMPEL, LC (reprint author), MISSION RES CORP,147 JOHN SIME PKWY,VALPARAISO,FL 32580, USA. RI Kempel, Leo/A-6837-2010; OI Kempel, Leo/0000-0002-8888-6197 NR 12 TC 22 Z9 22 U1 1 U2 3 PU IEE-INST ELEC ENG PI HERTS PA MICHAEL FARADAY HOUSE SIX HILLS WAY STEVENAGE, HERTS, ENGLAND SG1 2AY SN 1350-2417 J9 IEE P-MICROW ANTEN P JI IEE Proc.-Microw. Antennas Propag. PD JUN PY 1995 VL 142 IS 3 BP 233 EP 239 DI 10.1049/ip-map:19951778 PG 7 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA RF920 UT WOS:A1995RF92000007 ER PT J AU BEEX, AA WILKES, DM FARGUES, MP AF BEEX, AA WILKES, DM FARGUES, MP TI C-RISE ALGORITHM FOR EIGENDECOMPOSITION OF HERMITIAN PENCILS SO IEE PROCEEDINGS-RADAR SONAR AND NAVIGATION LA English DT Article DE EIGENDECOMPOSITION; HERMITIAN PENCILS; ORDER-RECURSIVE ALGORITHM ID EIGENSPACE DECOMPOSITION; TOEPLITZ-SYSTEMS; SIGNALS AB An order-recursive algorithm is presented for the generalised eigendecomposition of definite Hermitian pencils. An important feature is that it consists of a number (equal to the current order) of independent iterative eigenvalue searches followed by direct computation of the corresponding eigenvectors. The independence aspect produces the potential for parallel hardware implementations. The order-recursive nature of the algorithm results in the potential for solving problems of an a priori unknown, adequate minimal size rather than a single maximum size only. Such algorithms may be useful for sensor-array signal processing, for example in early direction-of-arrival estimation; The order-recursive nature is not detrimental to numerical performance, as it is shown that the algorithm is competitive with standard algorithms solving the single maximum-size problem only. C1 VANDERBILT UNIV, DEPT ELECT ENGN, NASHVILLE, TN 37235 USA. USN, POSTGRAD SCH, DEPT ELECT & COMP ENGN, MONTEREY, CA 93943 USA. RP BEEX, AA (reprint author), VIRGINIA POLYTECH INST & STATE UNIV, DEPT ELECT ENGN, BLACKSBURG, VA 24061 USA. NR 30 TC 0 Z9 0 U1 0 U2 0 PU INST ENGINEERING TECHNOLOGY-IET PI HERTFORD PA MICHAEL FARADAY HOUSE SIX HILLS WAY STEVENAGE, HERTFORD SG1 2AY, ENGLAND SN 1350-2395 J9 IEE P-RADAR SON NAV JI IEE Proc.-Radar Sonar Navig. PD JUN PY 1995 VL 142 IS 3 BP 97 EP 104 DI 10.1049/ip-rsn:19951875 PG 8 WC Telecommunications SC Telecommunications GA RE954 UT WOS:A1995RE95400003 ER PT J AU DELAHOUSSAYE, PR CHANG, CE OFFORD, B IMTHURN, G JOHNSON, R ASBECK, PM GARCIA, GA LAGNADO, I AF DELAHOUSSAYE, PR CHANG, CE OFFORD, B IMTHURN, G JOHNSON, R ASBECK, PM GARCIA, GA LAGNADO, I TI MICROWAVE PERFORMANCE OF OPTICALLY FABRICATED T-GATE THIN-FILM SILICON-ON-SAPPHIRE BASED MOSFETS SO IEEE ELECTRON DEVICE LETTERS LA English DT Article ID CIRCUITS AB Microwave characteristics of n and p-MOS transistors fabricated in thin film (50 and 100 nm) silicon-on-sapphire with T-gate lengths drawn at 0.5 and 0.7 mu m are reported, The observed f(max) was as high as 32 GHz for a n-MOS 0.7 mu m gate length device. Minimum noise figure values of 1.4, 1.8, and 2.1 dB at 2, 8, and 12 GHz respectively were obtained in a 100 nm thick n-channel device, N-channel device results were comparable in the 50 acid 100 nn films, For the p-channel FETs, the thinner, more highly stressed films gave significantly better results than the thicker p-channel films. At 2 GHz, p-FET noise figures as low as 1.7 dB were found, These results are, to the authors' knowledge, the lowest reported noise figures for either the p- or n-channel devices of any silicon based FET technology, Thinner films showed better voltage gain (g(m)/g(out)) than the thicker films. C1 UNIV CALIF SAN DIEGO,DEPT ELECT & COMP ENGN,LA JOLLA,CA 92093. RP DELAHOUSSAYE, PR (reprint author), USN,COMMAND CONTROL & OCEAN SURVEILLANCE CTR,DIV RES DEV TEST & EVALUAT,SAN DIEGO,CA 92152, USA. NR 13 TC 20 Z9 20 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 JUN PY 1995 VL 16 IS 6 BP 289 EP 292 DI 10.1109/55.790738 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA RA182 UT WOS:A1995RA18200026 ER PT J AU MITSCHANG, GW AF MITSCHANG, GW TI SPACE APPLICATIONS AND IMPLICATIONS OF HIGH-TEMPERATURE SUPERCONDUCTIVITY SO IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY LA English DT Article; Proceedings Paper CT 1994 Applied Superconductivity Conference CY OCT 16-21, 1994 CL BOSTON, MA SP MIT, Plasma Fus Ctr, Dept Elect Engn & Comp Sci, US DOE, Off Fus Energy, High Energy Phys, Adv Res Projects Agcy, Natl Inst Stand & Technol, USN, Naval Res Lab, USN, Off Naval Res, Quantum Magnet, IGC Adv Superconductors, Stone & Webster Engn Corp, Technova, Martin Marietta Astronaut, Walker Sci Inc, Westinghouse Sci & Technol Ctr, Babcock & Wilcox, Bechtel Corp, Cosine, Inc, Synchrony AB The High Temperature Superconductivity Space Experiment (HTSSE) opened new opportunities and applications for high temperature superconductivity. Space missions inherently benefit from reduced weight, size and power and HTS offers order of magnitude improvement in these as well as simultaneously improving performance. The talk provides a short history of HTSSE and the current status of the next phase. I will outline lessons learned from building the First space experiment and some challenges still remaining. I will address the unique problems faced when HTS is ''qualified'' for use in the space environment and conclude with projections and predictions of what is next, The talk is intended to be of general interest and will address material and electronics aspects of space applications. Summary results of tests conducted at the Naval Research Lab and elsewhere will be presented as they relate to space qualification of HTS RP MITSCHANG, GW (reprint author), USN,SPACE & NAVY WARFARE SYST COMMAND,WASHINGTON,DC 20350, USA. NR 4 TC 9 Z9 11 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 1051-8223 J9 IEEE T APPL SUPERCON JI IEEE Trans. Appl. Supercond. PD JUN PY 1995 VL 5 IS 2 BP 69 EP 73 DI 10.1109/77.402510 PN 1 PG 5 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA RP634 UT WOS:A1995RP63400005 ER PT J AU BRAY, SL EKIN, JW WALTMAN, DJ SUPERCZYNSKI, MJ AF BRAY, SL EKIN, JW WALTMAN, DJ SUPERCZYNSKI, MJ TI QUENCH ENERGY AND FATIGUE DEGRADATION PROPERTIES OF CU-STABILIZED AND AL/CU-STABILIZED NB-TI EPOXY-IMPREGNATED SUPERCONDUCTOR COILS SO IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY LA English DT Article; Proceedings Paper CT 1994 Applied Superconductivity Conference CY OCT 16-21, 1994 CL BOSTON, MA SP MIT, Plasma Fus Ctr, Dept Elect Engn & Comp Sci, US DOE, Off Fus Energy, High Energy Phys, Adv Res Projects Agcy, Natl Inst Stand & Technol, USN, Naval Res Lab, USN, Off Naval Res, Quantum Magnet, IGC Adv Superconductors, Stone & Webster Engn Corp, Technova, Martin Marietta Astronaut, Walker Sci Inc, Westinghouse Sci & Technol Ctr, Babcock & Wilcox, Bechtel Corp, Cosine, Inc, Synchrony AB In comparative measurements of small-scale epoxy-impregnated Cu-stabilized and Al/Cu-stabilized Nb-Ti test coils at 4 K and 5 T, the heat energy required to quench the Al/Cu-stabilized coil was 4 to 12 times greater than for the Cu-stabilized coil, depending on the relative operating current. Also, the coils' stabilizer resistivity (rho) was measured as a function of mechanical fatigue to test for strain-induced degradation. The rho of the Cu-stabilized coil is relatively unaffected by fatigue, while that of the Al/Cu-stabilized coil increases with fatigue. However, in these coils, having a typical stabilizer:superconductor ration of 4:1, the degradation of the Al/Cu-stabilized coil begins to saturate after several hundred fatigue cycles; after 2000 fatigue cycles to 0.2% strain, the rho of the Al/Cu-stabilized coil is still 2.6 times lower than the rho of the Cu-stabilized coil. Furthermore, after annealing the Al/Cu-stabilized coil at room temperature for 48 hours, the rho degradation was reduced by 76%. Thus, the use of Al/Cu stabilizer may offer substantial improvements in magnet stability, even where the magnet is subjected to fatigue degradation from repeatedly energizing the magnet. C1 USN,CTR SURFACE WARFARE,ANNAPOLIS,MD 21402. RP BRAY, SL (reprint author), NATL INST STAND & TECHNOL,325 BROADWAY,BOULDER,CO, USA. NR 8 TC 2 Z9 2 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 1051-8223 J9 IEEE T APPL SUPERCON JI IEEE Trans. Appl. Supercond. PD JUN PY 1995 VL 5 IS 2 BP 222 EP 225 DI 10.1109/77.402529 PN 1 PG 4 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA RP634 UT WOS:A1995RP63400023 ER PT J AU ALLEN, LH CUKAUSKAS, EJ FISHER, MA AF ALLEN, LH CUKAUSKAS, EJ FISHER, MA TI THIN-FILM COMPOSITES OF AU AND YBA2CU3O7-DELTA SO IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY LA English DT Article; Proceedings Paper CT 1994 Applied Superconductivity Conference CY OCT 16-21, 1994 CL BOSTON, MA SP MIT, Plasma Fus Ctr, Dept Elect Engn & Comp Sci, US DOE, Off Fus Energy, High Energy Phys, Adv Res Projects Agcy, Natl Inst Stand & Technol, USN, Naval Res Lab, USN, Off Naval Res, Quantum Magnet, IGC Adv Superconductors, Stone & Webster Engn Corp, Technova, Martin Marietta Astronaut, Walker Sci Inc, Westinghouse Sci & Technol Ctr, Babcock & Wilcox, Bechtel Corp, Cosine, Inc, Synchrony ID HIGH-TC; DEVICES AB We are using a novel bilayer deposition process to grow composite films of An with YBa2Cu3O7-delta. The composites have well-separated regions of Au and YBa2Cu3O7-delta, and we see no evidence for structural or chemical degradation of the grains and grain boundaries. For composite films on MgO substrates, the transport properties indicate the presence of weakened superconductivity in the films. Composites on SrTiO3 and LaAlO3 do not show this as strongly. The MgO composites behave like arrays of Josephson junctions and show promise as materials for nux flow devices. RP ALLEN, LH (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 13 TC 5 Z9 5 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 1051-8223 J9 IEEE T APPL SUPERCON JI IEEE Trans. Appl. Supercond. PD JUN PY 1995 VL 5 IS 2 BP 1218 EP 1221 DI 10.1109/77.402781 PN 2 PG 4 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA RP637 UT WOS:A1995RP63700018 ER PT J AU BROUSSARD, PR CESTONE, VC ALLEN, LH AF BROUSSARD, PR CESTONE, VC ALLEN, LH TI CHARACTERIZATION OF THIN-FILM COMPOSITE MIXTURES OF Y1BA2CU3O7-DELTA AND Y2O3 SO IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY LA English DT Article; Proceedings Paper CT 1994 Applied Superconductivity Conference CY OCT 16-21, 1994 CL BOSTON, MA SP MIT, Plasma Fus Ctr, Dept Elect Engn & Comp Sci, US DOE, Off Fus Energy, High Energy Phys, Adv Res Projects Agcy, Natl Inst Stand & Technol, USN, Naval Res Lab, USN, Off Naval Res, Quantum Magnet, IGC Adv Superconductors, Stone & Webster Engn Corp, Technova, Martin Marietta Astronaut, Walker Sci Inc, Westinghouse Sci & Technol Ctr, Babcock & Wilcox, Bechtel Corp, Cosine, Inc, Synchrony ID CRITICAL CURRENTS AB In our studies of the behavior of materials forming thin film composites with Y1Ba2Cu3O7-delta(YBCO), we have characterized thin film composite mixtures of YBCO and Y2O3 (Yttria) grown onto (100) MgO and (100) SrTiO3 substrates by off-axis sputtering. We have examined the transport properties of the films, in particular the critical current density, J(c). The temperature dependence of J(c) for composites on SrTiO3 is identical to that of our pure YBCO films, while for composites on MgO the 3, is similar to measurements on our earlier composites of YBCO and Y2Ba1Cu1O5 (''211''), The field dependence of J(c) for the YBCO/Yttria composites is different from our pure YBCO films, and from our earlier composites, but the magnitude of the flux pinning is similar. RP BROUSSARD, PR (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 10 TC 7 Z9 8 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 1051-8223 J9 IEEE T APPL SUPERCON JI IEEE Trans. Appl. Supercond. PD JUN PY 1995 VL 5 IS 2 BP 1222 EP 1224 DI 10.1109/77.402854 PN 2 PG 3 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA RP637 UT WOS:A1995RP63700019 ER PT J AU GUBSER, DU SOULEN, RJ AF GUBSER, DU SOULEN, RJ TI I-V CHARACTERISTICS OF SUPERCONDUCTING AG/BI2SR2CA2CU3O10 TAPES SO IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY LA English DT Article; Proceedings Paper CT 1994 Applied Superconductivity Conference CY OCT 16-21, 1994 CL BOSTON, MA SP MIT, Plasma Fus Ctr, Dept Elect Engn & Comp Sci, US DOE, Off Fus Energy, High Energy Phys, Adv Res Projects Agcy, Natl Inst Stand & Technol, USN, Naval Res Lab, USN, Off Naval Res, Quantum Magnet, IGC Adv Superconductors, Stone & Webster Engn Corp, Technova, Martin Marietta Astronaut, Walker Sci Inc, Westinghouse Sci & Technol Ctr, Babcock & Wilcox, Bechtel Corp, Cosine, Inc, Synchrony AB We have measured the current-voltage (I-V) characteristics of Ag-clad BiSrCaCuO tapes as a function of magnetic field (0-20 T) and temperature (4, 65, and 77 K). The magnetic field mas applied parallel and perpendicular to the face of the tape. Samples mere commercially prepared by the OPIT process. The I-V curves were analyzed by conventional means to extract J(C) as a function of the applied magnetic field. Some of the curves mere also fitted by an adaptation of the Ambegaokar-Halperin model from which mere obtained J(C) and the pinning potential. We found that, at 4 K, J(C) from both sources were generally comparable with J(C) similar to 10(4) A/cm(2) from 5 T to 20 T. C1 UNIV S CAROLINA,COLUMBIA,SC 29208. RP GUBSER, DU (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 1 TC 3 Z9 3 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 1051-8223 J9 IEEE T APPL SUPERCON JI IEEE Trans. Appl. Supercond. PD JUN PY 1995 VL 5 IS 2 BP 1302 EP 1304 DI 10.1109/77.402801 PN 2 PG 3 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA RP637 UT WOS:A1995RP63700039 ER PT J AU CLAASEN, JH AF CLAASEN, JH TI SPATIALLY-RESOLVED MEASUREMENTS OF CRITICAL-CURRENT DENSITY OF SUPERCONDUCTING FILMS ON 2 INCH SUBSTRATES SO IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY LA English DT Article; Proceedings Paper CT 1994 Applied Superconductivity Conference CY OCT 16-21, 1994 CL BOSTON, MA SP MIT, Plasma Fus Ctr, Dept Elect Engn & Comp Sci, US DOE, Off Fus Energy, High Energy Phys, Adv Res Projects Agcy, Natl Inst Stand & Technol, USN, Naval Res Lab, USN, Off Naval Res, Quantum Magnet, IGC Adv Superconductors, Stone & Webster Engn Corp, Technova, Martin Marietta Astronaut, Walker Sci Inc, Westinghouse Sci & Technol Ctr, Babcock & Wilcox, Bechtel Corp, Cosine, Inc, Synchrony AB An apparatus is described that makes non-invasive measurements of the critical current density at an array of 32 locations across a 2 inch diameter wafer. It operates at 77 K, and can resolve variations of a few percent. Measurements of the critical temperature of a single location on the film are also possible. RP CLAASEN, JH (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 2 TC 1 Z9 1 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 1051-8223 J9 IEEE T APPL SUPERCON JI IEEE Trans. Appl. Supercond. PD JUN PY 1995 VL 5 IS 2 BP 1413 EP 1415 DI 10.1109/77.402829 PN 2 PG 3 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA RP637 UT WOS:A1995RP63700067 ER PT J AU FRANCAVILLA, TL CUKAUSKAS, EJ ALLEN, LH BROUSSARD, PR AF FRANCAVILLA, TL CUKAUSKAS, EJ ALLEN, LH BROUSSARD, PR TI OBSERVATION OF A TRANSVERSE VOLTAGE IN THE MIXED-STATE OF YBCO THIN-FILMS SO IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY LA English DT Article; Proceedings Paper CT 1994 Applied Superconductivity Conference CY OCT 16-21, 1994 CL BOSTON, MA SP MIT, Plasma Fus Ctr, Dept Elect Engn & Comp Sci, US DOE, Off Fus Energy, High Energy Phys, Adv Res Projects Agcy, Natl Inst Stand & Technol, USN, Naval Res Lab, USN, Off Naval Res, Quantum Magnet, IGC Adv Superconductors, Stone & Webster Engn Corp, Technova, Martin Marietta Astronaut, Walker Sci Inc, Westinghouse Sci & Technol Ctr, Babcock & Wilcox, Bechtel Corp, Cosine, Inc, Synchrony ID OXYGEN AB The occurrence of a transverse voltage peak has been observed in YBCO thin films. This phenomenon occurs under conditions of temperature and current in the earth's magnetic field such that the films are in the mixed state. The magnitude of the peak was found to scale with both temperature and current, and exhibited a Sin(2 theta) orientational dependence measured between the film-substrate and the position of the measurement electrodes on the film surface. These observations are similar to observations made in conventional superconducting thin films such as Nb, NbN, NbCN, and PbBi. RP FRANCAVILLA, TL (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 15 TC 18 Z9 18 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 1051-8223 J9 IEEE T APPL SUPERCON JI IEEE Trans. Appl. Supercond. PD JUN PY 1995 VL 5 IS 2 BP 1717 EP 1720 DI 10.1109/77.402909 PN 2 PG 4 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA RP637 UT WOS:A1995RP63700142 ER PT J AU CLEM, TR AF CLEM, TR TI SUPERCONDUCTING MAGNETIC SENSORS OPERATING FROM A MOVING PLATFORM SO IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY LA English DT Article; Proceedings Paper CT 1994 Applied Superconductivity Conference CY OCT 16-21, 1994 CL BOSTON, MA SP MIT, Plasma Fus Ctr, Dept Elect Engn & Comp Sci, US DOE, Off Fus Energy, High Energy Phys, Adv Res Projects Agcy, Natl Inst Stand & Technol, USN, Naval Res Lab, USN, Off Naval Res, Quantum Magnet, IGC Adv Superconductors, Stone & Webster Engn Corp, Technova, Martin Marietta Astronaut, Walker Sci Inc, Westinghouse Sci & Technol Ctr, Babcock & Wilcox, Bechtel Corp, Cosine, Inc, Synchrony ID SQUID AB Sensors incorporating Superconducting Quantum Interference Devices (SQUIDs) provide the greatest sensitivity for magnetic anomaly detection available with current technology, The Coastal Systems Station (CSS) has pioneered the use of superconducting magnetic sensors in the field operating onboard airborne and undersea moving platforms, where environmental and instrument noises present operational problems which are not encountered under laboratory conditions Basic conceptual approaches for utilizing these sensors onboard moving platforms, including field deployable sensor configurations, are described Environmental and instrumental technical issues are also addressed. A historical sketch of sensor development, current sensor capabilities, recent technology advances, and future trends is included Naval applications and dual use opportunities for this technology is given based on experience developed at CSS. RP CLEM, TR (reprint author), USN,CTR SURFACE WARFARE,DAHLGREN DIV,COASTAL SYST STN,PANAMA CITY,FL 32407, USA. NR 7 TC 12 Z9 12 U1 0 U2 4 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 1051-8223 J9 IEEE T APPL SUPERCON JI IEEE Trans. Appl. Supercond. PD JUN PY 1995 VL 5 IS 2 BP 2124 EP 2128 DI 10.1109/77.403002 PN 3 PG 5 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA RP640 UT WOS:A1995RP64000013 ER PT J AU BLAMIRE, MG PORTER, FS KIRK, ECG VANVECHTEN, D AF BLAMIRE, MG PORTER, FS KIRK, ECG VANVECHTEN, D TI TA-BASED TUNNEL-JUNCTIONS FOR ENERGY RESOLVING X-RAY-DETECTION SO IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY LA English DT Article; Proceedings Paper CT 1994 Applied Superconductivity Conference CY OCT 16-21, 1994 CL BOSTON, MA SP MIT, Plasma Fus Ctr, Dept Elect Engn & Comp Sci, US DOE, Off Fus Energy, High Energy Phys, Adv Res Projects Agcy, Natl Inst Stand & Technol, USN, Naval Res Lab, USN, Off Naval Res, Quantum Magnet, IGC Adv Superconductors, Stone & Webster Engn Corp, Technova, Martin Marietta Astronaut, Walker Sci Inc, Westinghouse Sci & Technol Ctr, Babcock & Wilcox, Bechtel Corp, Cosine, Inc, Synchrony ID TRAPPING LAYERS; QUASIPARTICLE; BARRIER; NIOBIUM AB We report the results of a programme to develop an energy-resolving superconducting tunnel junction based on a Ta X-ray absorber. The design is based on a vertical heterostructure consisting of a Nb underlayer to act as a quasiparticle reflector, a thick Ta absorber layer and an Al trap layer. The upper surface of this trap layer is oxidised to form the tunnel barrier. The counterelectrode consists of an Al and thin Nb layer with thicknesses controlled to give approximately equal energy gaps in both electrodes and minimal absorption in the Nb counterelectrode. The effect of electro-magnetic barrier resonances on detection performance has been evaluated. Very high quality junctions have been fabricated, tested and evaluated for X-ray energy resolution. C1 USN,RES LAB,EO HULBURT CTR SPACE RES,WASHINGTON,DC 20375. RP BLAMIRE, MG (reprint author), UNIV CAMBRIDGE,DEPT MAT SCI,PEMBROKE ST,CAMBRIDGE CB2 3QZ,ENGLAND. RI Porter, Frederick/D-3501-2012 OI Porter, Frederick/0000-0002-6374-1119 NR 22 TC 4 Z9 4 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 1051-8223 J9 IEEE T APPL SUPERCON JI IEEE Trans. Appl. Supercond. PD JUN PY 1995 VL 5 IS 2 BP 3014 EP 3017 DI 10.1109/77.403226 PN 3 PG 4 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA RP640 UT WOS:A1995RP64000234 ER PT J AU PORTER, FS VANVECHTEN, D BLAMIRE, MG KIRK, ECG AF PORTER, FS VANVECHTEN, D BLAMIRE, MG KIRK, ECG TI SUPPRESSION OF EXTRINSIC RESOLUTION LIMITING FACTORS IN EPITAXIAL SUPERCONDUCTING TUNNEL JUNCTION DETECTORS SO IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY LA English DT Article; Proceedings Paper CT 1994 Applied Superconductivity Conference CY OCT 16-21, 1994 CL BOSTON, MA SP MIT, Plasma Fus Ctr, Dept Elect Engn & Comp Sci, US DOE, Off Fus Energy, High Energy Phys, Adv Res Projects Agcy, Natl Inst Stand & Technol, USN, Naval Res Lab, USN, Off Naval Res, Quantum Magnet, IGC Adv Superconductors, Stone & Webster Engn Corp, Technova, Martin Marietta Astronaut, Walker Sci Inc, Westinghouse Sci & Technol Ctr, Babcock & Wilcox, Bechtel Corp, Cosine, Inc, Synchrony AB Superconducting tunnel junctions have been shown to have potential as high resolution x-ray detectors. Recent reductions in the noise environment of our experiment have yielded a substantial increase in the resolution of our Nb/Ta junctions. The junctions used in the experiment are epitaxial base layer devices including a thick Ta absorber and have survived more than 30 cycles to low temperatures. Current experiments with a Fe-55 source have yielded an energy resolution of 68 eV at 5.89 keV with a quantum efficiency of 13%. Additional measurements using a higher energy Cd-109 source are also reported. We discuss how a reduction of extrinsic and quasi-extrinsic noise sources affects the performance of the detectors and why we believe we are still not observing the intrinsic limitations of these junctions. C1 UNIV CAMBRIDGE,CAMBRIDGE,ENGLAND. RP PORTER, FS (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. RI Porter, Frederick/D-3501-2012 OI Porter, Frederick/0000-0002-6374-1119 NR 7 TC 10 Z9 10 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 1051-8223 J9 IEEE T APPL SUPERCON JI IEEE Trans. Appl. Supercond. PD JUN PY 1995 VL 5 IS 2 BP 3026 EP 3029 DI 10.1109/77.403229 PN 3 PG 4 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA RP640 UT WOS:A1995RP64000237 ER PT J AU VANVECHTEN, D PORTER, FS WOOD, KS BLAMIRE, MG KIRK, ECG AF VANVECHTEN, D PORTER, FS WOOD, KS BLAMIRE, MG KIRK, ECG TI MODELING THE SPECTRA OF SUPERCONDUCTING TUNNEL JUNCTION X-RAY-DETECTORS SO IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY LA English DT Article; Proceedings Paper CT 1994 Applied Superconductivity Conference CY OCT 16-21, 1994 CL BOSTON, MA SP MIT, Plasma Fus Ctr, Dept Elect Engn & Comp Sci, US DOE, Off Fus Energy, High Energy Phys, Adv Res Projects Agcy, Natl Inst Stand & Technol, USN, Naval Res Lab, USN, Off Naval Res, Quantum Magnet, IGC Adv Superconductors, Stone & Webster Engn Corp, Technova, Martin Marietta Astronaut, Walker Sci Inc, Westinghouse Sci & Technol Ctr, Babcock & Wilcox, Bechtel Corp, Cosine, Inc, Synchrony AB SIS tunnel junctions (STJD) are predicted to have exceptionally good energy resolution as x-ray detectors. This paper interprets spectra illustrative of the current state of the art. They were obtained when Fe-55 and Cd-109 x-ray sources bombarded an epitaxial base layer Nb/Ta/Al/AlOx/Al/Nb junction having a diamond shape and sides 15 microns long. Our model of energy loss vial the escape of photoelectrons early in the energy cascade is demonstrated to be qualitatively correct. Earlier results based on fine-grained junctions suggested that such small area devices will have a large characteristic ''foot'' (asymmetric broadening of low energy side) on the peaks in the spectra that correspond to complete capture of the incident energy in the device. Our device is small, yet its full energy peaks lack significant feet. We conclude that this device is in the fast diffusion limit. This result contradicts the suggestion that Andreev reflection should severely restrict lateral diffusion in clean superconducting bilayers. C1 UNIV CAMBRIDGE,CAMBRIDGE,ENGLAND. RP VANVECHTEN, D (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. RI Porter, Frederick/D-3501-2012 OI Porter, Frederick/0000-0002-6374-1119 NR 8 TC 4 Z9 4 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 1051-8223 J9 IEEE T APPL SUPERCON JI IEEE Trans. Appl. Supercond. PD JUN PY 1995 VL 5 IS 2 BP 3030 EP 3033 DI 10.1109/77.403230 PN 3 PG 4 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA RP640 UT WOS:A1995RP64000238 ER PT J AU PURPURA, JW CLEM, TR WIEGERT, RF AF PURPURA, JW CLEM, TR WIEGERT, RF TI NONLINEAR RESPONSE IN THIN-FILM MAGNETOMETER SENSE LOOPS AT 77 K SO IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY LA English DT Article; Proceedings Paper CT 1994 Applied Superconductivity Conference CY OCT 16-21, 1994 CL BOSTON, MA SP MIT, Plasma Fus Ctr, Dept Elect Engn & Comp Sci, US DOE, Off Fus Energy, High Energy Phys, Adv Res Projects Agcy, Natl Inst Stand & Technol, USN, Naval Res Lab, USN, Off Naval Res, Quantum Magnet, IGC Adv Superconductors, Stone & Webster Engn Corp, Technova, Martin Marietta Astronaut, Walker Sci Inc, Westinghouse Sci & Technol Ctr, Babcock & Wilcox, Bechtel Corp, Cosine, Inc, Synchrony AB The onset of nonlinear response to applied magnetic field in GdBa2Cu3O7-delta thin film magnetometer sense loops was measured in experiments performed at 77 K. As the magnetic field applied to the magnetometers was ramped, the output magnetic flux of the sense loops was monitored with a YBa2Cu3O7-delta dc superconducting quantum interference device flip-chip coupled to the loop sample's output washer. In experiments devised to minimize circulating current in the magnetometers, nonlinear onset fields ranging from 26 to 120 mu T were measured for samples having linewidths ranging from 20 to 800 mu m. The loops also exhibited hysteresis in conjunction with the nonlinear behavior. These results indicate that nonlinear hysteresis is an issue for magnetometer loops operating in the earth's field. RP USN, CTR SURFACE WARFARE, COASTAL SYST STN, PANAMA CITY, FL 32407 USA. NR 8 TC 2 Z9 2 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA SN 1051-8223 EI 1558-2515 J9 IEEE T APPL SUPERCON JI IEEE Trans. Appl. Supercond. PD JUN PY 1995 VL 5 IS 2 BP 3123 EP 3126 DI 10.1109/77.403253 PN 3 PG 4 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA RP640 UT WOS:A1995RP64000261 ER PT J AU PATTEN, FW WOLF, SA AF PATTEN, FW WOLF, SA TI THE ARPA HIGH-TEMPERATURE SUPERCONDUCTIVITY PROGRAM SO IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY LA English DT Article; Proceedings Paper CT 1994 Applied Superconductivity Conference CY OCT 16-21, 1994 CL BOSTON, MA SP MIT, Plasma Fus Ctr, Dept Elect Engn & Comp Sci, US DOE, Off Fus Energy, High Energy Phys, Adv Res Projects Agcy, Natl Inst Stand & Technol, USN, Naval Res Lab, USN, Off Naval Res, Quantum Magnet, IGC Adv Superconductors, Stone & Webster Engn Corp, Technova, Martin Marietta Astronaut, Walker Sci Inc, Westinghouse Sci & Technol Ctr, Babcock & Wilcox, Bechtel Corp, Cosine, Inc, Synchrony AB This paper presents an overview of the Advanced Research Projects Agency (ARPA) program on high temperature superconductivity (HTS). This multidisciplinary effort has, since 1987, spent about $220,000,000 on promoting the science and technology of these materials. Support of many aspects of R and D has been provided to universities, national laboratories and an emerging industrial base. The current program is focused on several promising applications: 1) the development of RF and microwave passive components and subsystems for radar, EW, wireless communications and medical instrumentation; 2) developing digital applications of cryogenic technology both utilizing superconductors as well as semiconductors; 3) contributing to the development,of a conductor for power applications, and 4) developing a variety of low-cost reliable cryocoolers that will be the enabler for many aforementioned applications. C1 USN,RES LAB,WASHINGTON,DC 20375. RP PATTEN, FW (reprint author), ADV RES PROJECTS AGCY,ARLINGTON,VA 22203, USA. RI Wolf, Stuart/A-7513-2009 NR 0 TC 3 Z9 3 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 1051-8223 J9 IEEE T APPL SUPERCON JI IEEE Trans. Appl. Supercond. PD JUN PY 1995 VL 5 IS 2 BP 3203 EP 3207 DI 10.1109/77.403273 PN 3 PG 5 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA RP640 UT WOS:A1995RP64000281 ER PT J AU PALJUG, E YUN, XP AF PALJUG, E YUN, XP TI EXPERIMENTAL-STUDY OF 2 ROBOT ARMS MANIPULATING LARGE OBJECTS SO IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY LA English DT Article ID ARCHITECTURE AB In this paper, we present the architecture of an experimental real-time control system called TRACS (two robotic arm coordination system) and experimental results using two PUMA 250 robot arms that perform tasks of manipulating large objects. The system uses an IBM PC-AT as the host computer which is equipped with an AMD29000 high speed floating point coprocessor. It is configured in such a way that the Intel 80286 processor performs all the input-output interface operations (interface to the sensors, arms, and user) while the AMD29000 carries out the real-time computations of feedback control algorithms, Using the system, we have successfully implemented the dynamic control algorithm developed for coordinating two robotic arms, The two arms perform the task of manipulating a large object by means of enveloping grasp. The coordinated control algorithm utilizes the full dynamics of the two arms, The results from two experimental tasks are described in detail, in which the two arms move an object while adapting the grasp configuration to the motion trajectory and to the external disturbance force. C1 USN,POSTGRAD SCH,DEPT ELECT & COMP ENGN,MONTEREY,CA 93943. RP PALJUG, E (reprint author), CALTECH,JET PROP LAB,MAN MACHINES SYST GRP,PASADENA,CA 91109, USA. NR 45 TC 4 Z9 5 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 1063-6536 J9 IEEE T CONTR SYST T JI IEEE Trans. Control Syst. Technol. PD JUN PY 1995 VL 3 IS 2 BP 177 EP 188 DI 10.1109/87.388126 PG 12 WC Automation & Control Systems; Engineering, Electrical & Electronic SC Automation & Control Systems; Engineering GA RA651 UT WOS:A1995RA65100003 ER PT J AU JONES, JR TAIT, GB JONES, SH KATZER, DS AF JONES, JR TAIT, GB JONES, SH KATZER, DS TI DC AND LARGE-SIGNAL TIME-DEPENDENT ELECTRON-TRANSPORT IN HETEROSTRUCTURE DEVICES - AN INVESTIGATION OF THE HETEROSTRUCTURE BARRIER VARACTOR SO IEEE TRANSACTIONS ON ELECTRON DEVICES LA English DT Article ID RAY PHOTOEMISSION SPECTROSCOPY; HETEROJUNCTION BAND OFFSETS; SUBMILLIMETER-WAVE POWER; MILLIMETER-WAVE; CYCLOTRON-RESONANCE; MATERIAL PARAMETERS; NUMERICAL-ANALYSIS; BOUNDARY-CONDITION; INP; DIODES AB The de and large-signal time-dependent electron transport properties of Heterostructure Barrier Varactors () are investigated using a physical model which combines drift-diffusion current transport through the heterostructure bulk with thermionic and thermionic-field emission currents imposed at the abrupt heterointerfaces in a fully self-consistent manner. A fast and accurate hydrodynamic device simulator for generic unipolar InGaAs/InAlAs on InP, InGaAs/InP on InP, and GaAs/InGaAs/AlGaAs on GaAs has been developed based on this model, The experimentally observed current-voltage and capacitance-voltage characteristics of GaAs/AlGaAs and GaAs/InGaAs/AlGaAs are compared with the simulated results over a wide range of de bias, Large-signal time-dependent simulations at a pump frequency of 100 GHz confirm the odd-harmonic operation of these devices and indicate that multiple barrier should provide efficient frequency multiplication, especially in high order frequency multipliers, broadband frequency triplers, and quasi-optical tripler arrays. C1 US MIL ACAD,DEPT ELECT ENGN & COMP SCI,W POINT,NY 10996. USN,RES LAB,DIV ELECTR SCI & TECHNOL,WASHINGTON,DC 20375. RP JONES, JR (reprint author), UNIV VIRGINIA,DEPT ELECT ENGN,CHARLOTTESVILLE,VA 22903, USA. RI Katzer, D. Scott/N-7841-2013 NR 48 TC 6 Z9 6 U1 0 U2 2 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9383 J9 IEEE T ELECTRON DEV JI IEEE Trans. Electron Devices PD JUN PY 1995 VL 42 IS 6 BP 1070 EP 1080 DI 10.1109/16.387239 PG 11 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA QZ200 UT WOS:A1995QZ20000008 ER PT J AU SUDOFF, SD ZIVI, EL COLLINS, TD AF SUDOFF, SD ZIVI, EL COLLINS, TD TI START UP PERFORMANCE OF LOAD-COMMUTATED INVERTER-FED SYNCHRONOUS MACHINE DRIVES SO IEEE TRANSACTIONS ON ENERGY CONVERSION LA English DT Article; Proceedings Paper CT 1994 IEEE/PES Summer Meeting CY JUL 24-28, 1994 CL SAN FRANCISCO, CA SP IEEE, Power Engn Soc AB Load-commutated inverter (LCI) synchronous machine drives are common in the high power range. However, the starting performance of these systems is a concern since load-commutation can not occur at arbitrarily low speeds. This paper compares three different starting strategies including one apparently neglected method - normal load commutation. In particular, it is shown that depending on system parameters it may be possible to start the system with no special provision for start up. A method to determine whether a given system can be started using load commutation is presented. C1 USN,CTR SURFACE WARFARE,ANNAPOLIS DETACHMENT,CARDEROCK DIV,ANNAPOLIS,MD 21402. CATERPILLAR INC,DIV POWER SYST,LAFAYETTE,IN 47905. RP SUDOFF, SD (reprint author), UNIV MISSOURI,DEPT ELECT ENGN,ROLLA,MO 65401, USA. NR 9 TC 15 Z9 15 U1 1 U2 3 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0885-8969 J9 IEEE T ENERGY CONVER JI IEEE Trans. Energy Convers. PD JUN PY 1995 VL 10 IS 2 BP 268 EP 274 DI 10.1109/60.391892 PG 7 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA RG487 UT WOS:A1995RG48700010 ER PT J AU BUSS, AH LAWRENCE, SR AF BUSS, AH LAWRENCE, SR TI MEAN-VARIANCE INTERACTIONS IN-PROCESS IMPROVEMENT AND CAPACITY DESIGN SO IIE TRANSACTIONS LA English DT Article ID LOT AB We investigate mean-variance interactions of processing time as applied to process improvement and capacity design. For general capacity cost and flowcost functions, we demonstrate that production processes fall into one of six regions on the mean-variance interaction plane, each with its own policy implications. The general model is specialized to the case of an M/G/1 queue with linear and separable mean and variance costs, and with flowcosts proportional to mean queue length. Optimal solutions for processing-time mean and variance are derived, and easily obtained operating parameters are used to identify appropriate process improvement policies. A simulation example of a production network taken from industry verifies the efficacy of the linear M/G/1 model in a more general setting. We conclude that intelligent management of both processing capacity (i.e. mean processing time) and processing-time variances can be powerful tools for both capacity design and process improvement. C1 UNIV COLORADO,COLL BUSINESS ADM,BOULDER,CO 80309. RP BUSS, AH (reprint author), USN,POSTGRAD SCH,DEPT OPERAT RES,MONTEREY,CA 93943, USA. NR 16 TC 2 Z9 3 U1 1 U2 2 PU CHAPMAN HALL LTD PI LONDON PA 2-6 BOUNDARY ROW, LONDON, ENGLAND SE1 8HN SN 0740-817X J9 IIE TRANS JI IIE Trans. PD JUN PY 1995 VL 27 IS 3 BP 339 EP 347 DI 10.1080/07408179508936749 PG 9 WC Engineering, Industrial; Operations Research & Management Science SC Engineering; Operations Research & Management Science GA RL249 UT WOS:A1995RL24900010 ER PT J AU CHILLER, TM DEMIERI, P COHEN, I AF CHILLER, TM DEMIERI, P COHEN, I TI INTERNATIONAL HEALTH TRAINING - THE TULANE EXPERIENCE SO INFECTIOUS DISEASE CLINICS OF NORTH AMERICA LA English DT Article AB At the heart of imminent healthcare reform are the future physicians of this decade. Medical educators will want to stimulate a desire within students to practice humanitarian, cost-effective, community-oriented primary care. Further studies to examine the effects of medical student experiences in international electives should be encouraged. C1 TULANE UNIV,SCH MED,COMMUNITY MED PROGRAM,NEW ORLEANS,LA 70112. PARKLAND MEM HOSP & AFFILIATED INST,DALLAS,TX. USN HOSP,JACKSONVILLE,FL. NR 4 TC 29 Z9 29 U1 2 U2 3 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0891-5520 J9 INFECT DIS CLIN N AM JI Infect. Dis. Clin. North Am. PD JUN PY 1995 VL 9 IS 2 BP 439 EP 443 PG 5 WC Immunology; Infectious Diseases SC Immunology; Infectious Diseases GA RG039 UT WOS:A1995RG03900021 PM 7673680 ER PT J AU LEVINE, BL UEDA, Y CRAIGHEAD, N HUANG, ML JUNE, CH AF LEVINE, BL UEDA, Y CRAIGHEAD, N HUANG, ML JUNE, CH TI CD28 LIGANDS CD80 (B7-1) AND CD86 (B7-2) INDUCE LONG-TERM AUTOCRINE GROWTH OF CD4(+) T-CELLS AND INDUCE SIMILAR PATTERNS OF CYTOKINE SECRETION IN-VITRO SO INTERNATIONAL IMMUNOLOGY LA English DT Article DE B7; CD28; CD80; CD86; CO-STIMULATION; CYTOKINE; T HELPER ID CTLA-4 COUNTER-RECEPTOR; HUMAN LYMPHOCYTES-T; ACTIVATION ANTIGEN; GENE-EXPRESSION; IL-4 PRODUCTION; CO-STIMULATION; INTERLEUKIN-2; PROLIFERATION; PATHWAY; COSTIMULATION AB The interaction of CD28 and its ligands is critical for antigen-induced T cell activation. Recent studies have demonstrated the existence of at least two members of the B7 receptor family. In this report, the co-stimulatory signals provided by CD80 (B7-1) or CD86 (B7-2) were compared to CD28 ligation by mAb. We demonstrate that the kinetics of induction of T cell proliferation after anti-CD3 stimulation was similar regardless of the form of co-stimulation. Similarly, B7-1 and B7-2 could both maintain long-term expansion of CD4 cells. The co-stimulatory effects of both B7-1 and B7-2 were dependent on CD28 cross-linking, based on complete inhibition of proliferation by CD28 antibody Fab fragments. Go-stimulation with B7-1 and B7-2 induced high levels of cytokine secretion by resting T cells, and the effects of B7-1 and B7-2 could not be distinguished. This conclusion is based on analysis of the initial activation of CD28(+) T cells, as well as T cell subpopulations consisting of CD4(+) and CD8(+) T cells. Both B7-1 and B7-2 could elicit IL-4 secretion from CD4(+) T cells while anti-CD28 antibody induced substantially less IL-4 secretion. Furthermore, both B7-1 and B7-2 could stimulate high revels of IFN-gamma and IL-4 from CD4(+)CD45RO(+) cells, while neither B7 receptor could co-stimulate IFN-gamma and IL-4 secretion from CD4(+)CD45RA(+) T cells. B7-1 and B7-2 could, however, co-stimulate CD4(+)CD45RA(+) T cells to secrete IL-2. By contrast, when previously activated T cells were tested, re-stimulation of CD4 T cell blasts with B7-1 or B7-2 resulted in higher secretion of IL-4 and IL-5 than anti-CD28, while re-stimulation with anti-CD28 antibody maintained a higher level of secretion of IL-2 and IFN-gamma than B7-1 or B7-2. These observations may have important implications because they suggest that the manner of CD28 ligation can be a critical determinant in the development of cytokine secretion that corresponds to T(h)1- and T(h)2-like patterns of differentiation. Together these observations suggest that there are no intrinsic differences between B7-1 and B7-2 in their ability to co-stimulate the populations of cells that we have tested. C1 USN,MED RES INST,IMMUNE CELL BIOL PROGRAM,BETHESDA,MD 20889. UNIFORMED SERV UNIV HLTH SCI,DEPT MED,BETHESDA,MD 20889. GEOCENTERS INC,FT WASHINGTON,MD 20744. RI Levine, Bruce/D-1688-2009 NR 65 TC 137 Z9 137 U1 0 U2 0 PU OXFORD UNIV PRESS UNITED KINGDOM PI OXFORD PA WALTON ST JOURNALS DEPT, OXFORD, ENGLAND OX2 6DP SN 0953-8178 J9 INT IMMUNOL JI Int. Immunol. PD JUN PY 1995 VL 7 IS 6 BP 891 EP 904 DI 10.1093/intimm/7.6.891 PG 14 WC Immunology SC Immunology GA RF403 UT WOS:A1995RF40300001 PM 7577797 ER PT J AU UEDA, Y LEVINE, BL HUANG, ML FREEMAN, GJ NADLER, LM JUNE, CH WARD, SG AF UEDA, Y LEVINE, BL HUANG, ML FREEMAN, GJ NADLER, LM JUNE, CH WARD, SG TI BOTH CD28 LIGANDS CD80 (B7-1) AND CD86 (B7-2) ACTIVATE PHOSPHATIDYLINOSITOL 3-KINASE, AND WORTMANNIN REVEALS HETEROGENEITY IN THE REGULATION OF T-CELL IL-2 SECRETION SO INTERNATIONAL IMMUNOLOGY LA English DT Article DE B7-1; 87-2; CD28; CD80; CD86 ID PROTEIN-KINASE-C; LYMPHOCYTES-T; D-3 PHOSPHOINOSITIDES; MATURE THYMOCYTES; PHOSPHOLIPASE-C; RECEPTOR; ANTIGEN; INTERLEUKIN-2; RESPONSES; LIGATION AB In this report, the co-stimulatory signals provided by CD80 (B7-1) or CD86 (B7-2) were compared to CD28 ligation by mAb. We demonstrate that while both anti-CD3 and anti-CD28 antibodies induced activation of phosphoinositide (PI) 3-kinase, the kinetics of activation differed. Anti-CD28 produced a sustained activation of PI 3-kinase while anti-CD3 induced activation was transient. Both B7-1 and B7-2 could induce prolonged activation of PI 3-kinase. The co-stimulatory effects of B7-1 and B7-2 were dependent on CD28 cross-linking, based on complete inhibition of PI 3-kinase activation by CD28 antibody Fab fragments. While Jurkat T cells co-stimulated with anti-CD3 and B7-1 or B7-2 secreted high levels of IL-2, there were distinct effects of anti-CD28 mAb and B7-1 or B7-2 on IL-2 secretion in conjunction with protein kinase C activation. To assess functional effects of CD28 ligation, pharmacologic inhibitors of PI 3-kinase were evaluated. In Jurkat cells, efficient inhibition of PI 3-kinase activation after B7-2 stimulation was achieved using wortmannin; however, we observed a surprising increase in IL-2 secretion after B7 or anti-CD28 stimulation. The effect of wortmannin was concentration dependent. Moreover, the effect was specific for receptor-mediated activation as wortmannin did not enhance phorbol ester plus ionomycin-induced IL-2 secretion. Another inhibitor of PI 3-kinase, LY294002, also resulted in augmentation of anti-CD28-induced IL-2 secretion by Jurkat cells. The effects of wortmannin on IL-2 secretion were also examined in primary T cells. In marked contrast, wortmannin resulted in a potent inhibition of anti-CD3 plus B7-1 or anti-CD28-induced IL-2 secretion while phorbol ester plus ionomycin-induced IL-2 secretion was wortmannin resistant. Together these observations demonstrate that signal transduction by both B7-1 and B7-2 involves PI 3-kinase, and that PI 3-kinase or other wortmannin-sensitive targets are important for IL-2 secretion. Finally, treatment of Jurkat cells with PI 3-kinase inhibitors alone was sufficient to induce low levels of IL-2 secretion. This is consistent with the notion that a wortmannin-sensitive target such as PI 3-kinase may down-regulate IL-2 secretion in Jurkat cells. C1 USN,MED RES INST,IMMUNE CELL BIOL PROGRAM,BETHESDA,MD 20889. UNIFORMED SERV UNIV HLTH SCI,DEPT MED,BETHESDA,MD 20889. GEOCENTERS INC,FT WASHINGTON,MD 20744. DANA FARBER CANC INST,DIV HEMATOL MALIGNANCY,BOSTON,MA 02115. UNIV BATH,SCH PHARM & PHARMACOL,DEPT PHARMACOL,BATH BA2 7AY,AVON,ENGLAND. RI Levine, Bruce/D-1688-2009 NR 58 TC 77 Z9 80 U1 0 U2 2 PU OXFORD UNIV PRESS UNITED KINGDOM PI OXFORD PA WALTON ST JOURNALS DEPT, OXFORD, ENGLAND OX2 6DP SN 0953-8178 J9 INT IMMUNOL JI Int. Immunol. PD JUN PY 1995 VL 7 IS 6 BP 957 EP 966 DI 10.1093/intimm/7.6.957 PG 10 WC Immunology SC Immunology GA RF403 UT WOS:A1995RF40300008 PM 7577804 ER PT J AU GHER, ME RICHARDSON, AC AF GHER, ME RICHARDSON, AC TI THE ACCURACY OF DENTAL RADIOGRAPHIC TECHNIQUES USED FOR EVALUATION OF IMPLANT FIXTURE PLACEMENT SO INTERNATIONAL JOURNAL OF PERIODONTICS & RESTORATIVE DENTISTRY LA English DT Article AB Periapical, panoramic, linear tomographic, and computerized tomographic radiographs were made of a partially dentate human mandible with four implants in place. Measurements taken from the radiographs and computer-generated images were compared to measurements made directly on the cross-sectioned test specimen. Periapical radiographs produced the most accurate measurements. Computerized and linear tomographic images provided the unique advantage of cross-sectional views of anatomic structures, but image blurring inherent to linear tomography and volume-averaging error inherent to computerized tomography affected the accuracy of measurements made from these images. The use of a dense dimensional reference object helped to compensate for radiographic distortion and is appropriate when projection radiographic techniques are used. The CT reference scale provided the most accurate method for interpreting measurements made from the computerized tomogram. The use of a dense dimensional reference object is inappropriate with CT because of ifs volume-averaging error. C1 USN,CTR DENT,DEPT PERIODONT,SAN DIEGO,CA 92152. RP GHER, ME (reprint author), NATL NAVAL DENT CTR,NAVAL DENT SCH,DEPT RES,8901 WISCONSIN AVE,BETHESDA,MD 20889, USA. NR 11 TC 10 Z9 10 U1 0 U2 1 PU QUINTESSENCE PUBL CO INC PI CAROL STREAM PA 551 KIMBERLY DR, CAROL STREAM, IL 60188-1881 SN 0198-7569 J9 INT J PERIODONT REST JI Int. J. Periodontics Restor. Dent. PD JUN PY 1995 VL 15 IS 3 BP 269 EP 283 PG 15 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA RD231 UT WOS:A1995RD23100006 ER PT J AU BILODEAU, TG EWING, KJ NAU, GM AGGARWAL, ID AF BILODEAU, TG EWING, KJ NAU, GM AGGARWAL, ID TI COMPARISON OF IN-SITU IONIZING-RADIATION EFFECTS ON RAMAN AND PHOTOLUMINESCENCE INTENSITY OF HIGH OH, LOW OH SILICA, AND FLUORIDE CORE FIBERS SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID SCATTERING RP BILODEAU, TG (reprint author), USN,RES LAB,4555 OVERLOOK AVE,WASHINGTON,DC 20375, USA. NR 16 TC 1 Z9 1 U1 1 U2 3 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD JUN 1 PY 1995 VL 77 IS 11 BP 5524 EP 5527 DI 10.1063/1.359596 PG 4 WC Physics, Applied SC Physics GA QZ282 UT WOS:A1995QZ28200005 ER PT J AU GRUBER, JB SELTZER, MD PUGH, VJ RICHARDSON, FS AF GRUBER, JB SELTZER, MD PUGH, VJ RICHARDSON, FS TI ELECTRONIC ENERGY-LEVEL STRUCTURE OF TRIVALENT HOLMIUM IN YTTRIUM-ALUMINUM-GARNET SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID CRYSTAL-FIELD ANALYSES; SOLID-STATE LASERS; TRIGONAL NA3.2NACLO4.6H2O; SPECTRA; SCANDIUM; ABSORPTION; SYSTEMS; ND-3+ C1 USN,DIV WARFARE CTR WEAPONS,RES DEPT,DIV CHEM,CHINA LAKE,CA 93555. UNIV VIRGINIA,DEPT CHEM,CHARLOTTESVILLE,VA 22901. RP GRUBER, JB (reprint author), SAN JOSE STATE UNIV,DEPT PHYS,SAN JOSE,CA 95192, USA. NR 33 TC 23 Z9 25 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 JUN 1 PY 1995 VL 77 IS 11 BP 5882 EP 5901 DI 10.1063/1.359169 PG 20 WC Physics, Applied SC Physics GA QZ282 UT WOS:A1995QZ28200054 ER PT J AU BUOT, FA RAJAGOPAL, AK AF BUOT, FA RAJAGOPAL, AK TI ZENER TUNNELING CONDITION AND THE HYSTERESIS OF TRAPPED CHARGE IN AN ALGASB BARRIER IN ALGASB/INAS/ALGASB DOUBLE-BARRIER STRUCTURES SO JOURNAL OF APPLIED PHYSICS LA English DT Note RP BUOT, FA (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 4 TC 2 Z9 2 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD JUN 1 PY 1995 VL 77 IS 11 BP 6046 EP 6048 DI 10.1063/1.359192 PG 3 WC Physics, Applied SC Physics GA QZ282 UT WOS:A1995QZ28200079 ER PT J AU HANEY, RL HALE, RA COLLINS, CA AF HANEY, RL HALE, RA COLLINS, CA TI ESTIMATING SUBPYCNOCLINE DENSITY-FLUCTUATIONS IN THE CALIFORNIA CURRENT REGION FROM UPPER OCEAN OBSERVATIONS SO JOURNAL OF ATMOSPHERIC AND OCEANIC TECHNOLOGY LA English DT Article ID NORTHERN CALIFORNIA; SHELF AB A method for extending upper ocean density observations to the deep ocean is tested using a large number of deep CTD (conductivity-temperature-depth) stations in the California Current. The specific problem considered is that of constructing the best estimate for the density profile below a certain depth D given an observed profile above that depth. For this purpose, the estimated disturbance profile is modeled as a weighted sum of empirical vertical modes (EOFs). The EOFs are computed from the surface to 2000 m, using 126 largely independent CTD stations off Point Sur, California. Separate computations are made for the summer half-year (mid-April to mid-October) and the winter half-year (mid-October to mid-April). For each observed density profile, the EOF weights that determine the estimated profile are obtained by performing a successive least-squares fit of the disturbance density profile above D to the first N EOFs. In this study, N is taken to be 7, which is the number of EOFs that account for the ''signal'' in the profiles as determined by the methods of Preisendorfer et al. and Smith et al. The estimated profiles are then verified against the observed profiles to 2000 m, and the results are presented as a function of the depth D. In general, the vertical extension method is moderately successful at estimating density fluctuations at and below 500 m from data entirely above 500 m. Observed density profiles to depths shallower than 500 m can be extended to 500 m, with a correlation that depends on the time of year as well as on the depth of the observed profile. For example, a minimum of 200 m of data is needed to perform a useful extension to 500 m, and in all cases extensions are more successful in winter than in summer. As might be expected, correlations between the estimated profiles and a seven-mode reconstruction of the observed profiles, representing the ''signal'' part of the observed profiles, are somewhat higher. The dynamic height of the sea surface relative to 500 m, an important integral quantity, can be estimated quite well with only 300 m of data. A practical result of this study is that data down to only 200 or 300 m, as might be acquired by a SeaSoar CTD survey, can be extended to 500 m or more using the EOF-based method with a known and useful level of skill. Tests with a small sample of independent data confirm the above results. The success of the method is attributed to the fact that in this part of the ocean the dominant EOFs represent variability in the upper ocean that is also reflected at deeper depths. C1 USN,POSTGRAD SCH,DEPT OCEANOG,MONTEREY,CA 93943. RP HANEY, RL (reprint author), USN,POSTGRAD SCH,DEPT METEOROL,589 DYER RD,BLDG 235,RM 254,MONTEREY,CA 93943, USA. NR 16 TC 10 Z9 10 U1 0 U2 0 PU AMER METEOROLOGICAL SOC PI BOSTON PA 45 BEACON ST, BOSTON, MA 02108-3693 SN 0739-0572 J9 J ATMOS OCEAN TECH JI J. Atmos. Ocean. Technol. PD JUN PY 1995 VL 12 IS 3 BP 550 EP 566 DI 10.1175/1520-0426(1995)012<0550:ESDFIT>2.0.CO;2 PG 17 WC Engineering, Ocean; Meteorology & Atmospheric Sciences SC Engineering; Meteorology & Atmospheric Sciences GA RD279 UT WOS:A1995RD27900008 ER PT J AU VARGO, TG BEKOS, EJ KIM, YS RANIERI, JP BELLAMKONDA, R AEBISCHER, P MARGEVICH, DE THOMPSON, PM BRIGHT, FV GARDELLA, JA AF VARGO, TG BEKOS, EJ KIM, YS RANIERI, JP BELLAMKONDA, R AEBISCHER, P MARGEVICH, DE THOMPSON, PM BRIGHT, FV GARDELLA, JA TI SYNTHESIS AND CHARACTERIZATION OF FLUOROPOLYMERIC SUBSTRATA WITH IMMOBILIZED MINIMAL PEPTIDE SEQUENCES FOR CELL-ADHESION STUDIES .1. SO JOURNAL OF BIOMEDICAL MATERIALS RESEARCH LA English DT Article ID ION MASS-SPECTROMETRY; SURFACE MODIFICATION; FILMS; POLY(TETRAFLUOROETHYLENE-CO-HEXAFLUOROPROPYLENE); INTEGRATION; FIBRONECTIN; PERFORMANCE; ATTACHMENT; ADSORPTION; MONOLAYERS AB In this work, poly(tetrafluoroethylene-co-hexafluoropropyl ene) (also known as fluorinated ethylene propylene; FEP) was functionalized at the surface using a radio frequency glow discharge plasma. This particular surface modification produced controlled densities of hydroxyl functionality on the FEP surface. These surface hydroxyl groups provided sites for the covalent attachment of minimal peptide sequences, that are specific for neuronal attachment. FSCA, ATR-FTIR, ToF-SIMS, and fluorescence spectroscopy were used to evaluate peptide reaction efficiencies and to verify that intact peptide sequences were covalently attached to the FEP surfaces. These modified substrata were then used to study the cell attachment and response to covalently bound minimal peptide sequences. Cell attachment and differentiation results using NG108-15 and PC12 neuronal cell lines are presented in the adjoining paper by Ranieri et al. (C) 1995 John Wiley & Sons, Inc. C1 SUNY BUFFALO,DEPT CHEM,BUFFALO,NY 14260. USN,RES LAB,CTR BIOMOLEC SCI & ENGN,WASHINGTON,DC 20375. KOREA STAND RES,SURFACE ANAL LAB,TAEJON 305606,SOUTH KOREA. CHU VAUDOIS,DIV SURG RES,CH-1011 LAUSANNE,SWITZERLAND. EASTMAN KODAK CO,RES LABS,RES & DEV,ROCHESTER,NY 14650. RI Aebischer, Patrick/E-1387-2013 NR 39 TC 38 Z9 38 U1 0 U2 5 PU JOHN WILEY & SONS INC PI NEW YORK PA 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0021-9304 J9 J BIOMED MATER RES JI J. Biomed. Mater. Res. PD JUN PY 1995 VL 29 IS 6 BP 767 EP 778 DI 10.1002/jbm.820290613 PG 12 WC Engineering, Biomedical; Materials Science, Biomaterials SC Engineering; Materials Science GA RA473 UT WOS:A1995RA47300012 PM 7593014 ER PT J AU BRUCKNER, JD ALEXANDER, AH LICHTMAN, DM AF BRUCKNER, JD ALEXANDER, AH LICHTMAN, DM TI ACUTE DISLOCATIONS OF THE DISTAL RADIOULNAR JOINT SO JOURNAL OF BONE AND JOINT SURGERY-AMERICAN VOLUME LA English DT Article ID GALEAZZI FRACTURE-DISLOCATION; COMPUTED-TOMOGRAPHY; OPERATIVE TREATMENT; WRIST; INJURIES; CHILDREN; SUBLUXATION; DIAGNOSIS; FOREARM C1 USN,MED CTR,DEPT ORTHOPAED SURG,OAKLAND,CA 94627. BAYLOR COLL MED,HOUSTON,TX 77030. RP BRUCKNER, JD (reprint author), UNIV WASHINGTON,DEPT PEDIAT,RK-10,1959 NE PACIFIC ST,SEATTLE,WA 98195, USA. NR 96 TC 7 Z9 8 U1 0 U2 0 PU JOURNAL BONE JOINT SURGERY INC PI NEEDHAM PA 20 PICKERING ST, NEEDHAM, MA 02192 SN 0021-9355 J9 J BONE JOINT SURG AM JI J. Bone Joint Surg.-Am. vol. PD JUN PY 1995 VL 77A IS 6 BP 958 EP 968 PG 11 WC Orthopedics; Surgery SC Orthopedics; Surgery GA RF518 UT WOS:A1995RF51800017 ER PT J AU LAVELL, WT AF LAVELL, WT TI PHOTOENOLIZATION - AN ORGANIC-CHEMISTRY LABORATORY EXPERIMENT SO JOURNAL OF CHEMICAL EDUCATION LA English DT Article RP LAVELL, WT (reprint author), USN ACAD,ANNAPOLIS,MD 21402, USA. NR 6 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0021-9584 J9 J CHEM EDUC JI J. Chem. Educ. PD JUN PY 1995 VL 72 IS 6 BP 552 EP 553 PG 2 WC Chemistry, Multidisciplinary; Education, Scientific Disciplines SC Chemistry; Education & Educational Research GA RG158 UT WOS:A1995RG15800030 ER PT J AU APRUZESE, JP CLARK, RW THORNHILL, JW AF APRUZESE, JP CLARK, RW THORNHILL, JW TI A SINGLE RAY APPROXIMATION FOR ALPHA-PARTICLE TRANSPORT SO JOURNAL OF COMPUTATIONAL PHYSICS LA English DT Article ID PHOTON-ESCAPE PROBABILITIES; ARRAY IMPLOSIONS; Z-PINCH; EQUATION; PLASMA AB We report the development of a one-ray approximation for the numerical transport of 3.5 MeV alpha particles generated in DT fusion reactions. Similar in spirit to techniques used in photon transport, this method provides respectable accuracy at potentially large savings in time and storage when compared to multigroup diffusion, S-n, or Monte Carlo techniques. The approximation works in a restricted, but large, class of plasmas, those in which scattering of the alpha's and bending of their trajectories by magnetic fields can be neglected. Test cases in planar, cylindrical, and spherical geometry are presented. In another calculation it is demonstrated that the achievement of ignition in an imploding Z pinch may depend sensitively on the degree to which a magnetic field confines the alpha particles in the dense central core. (C) 1995 Academic Press. Inc. RP APRUZESE, JP (reprint author), USN,RES LAB,DIV PLASMA PHYS,RADIAT HYDRODYNAM BRANCH,WASHINGTON,DC 20375, USA. NR 20 TC 2 Z9 2 U1 0 U2 0 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 SN 0021-9991 J9 J COMPUT PHYS JI J. Comput. Phys. PD JUN PY 1995 VL 119 IS 1 BP 156 EP 163 DI 10.1006/jcph.1995.1124 PG 8 WC Computer Science, Interdisciplinary Applications; Physics, Mathematical SC Computer Science; Physics GA QZ750 UT WOS:A1995QZ75000013 ER PT J AU QIAN, W SKOWRONSKI, M DOVERSPIKE, K ROWLAND, LB GASKILL, DK AF QIAN, W SKOWRONSKI, M DOVERSPIKE, K ROWLAND, LB GASKILL, DK TI OBSERVATION OF NANOPIPES IN ALPHA-GAN CRYSTALS SO JOURNAL OF CRYSTAL GROWTH LA English DT Note AB Long hollow pipes, a few nanometers in radius, have been observed for the first time in alpha-GaN films grown on sapphire substrates by organometallic vapor phase epitaxy. Transmission electron microscopy investigation shows that the nanopipes are oriented along the [0001] growth direction, and exhibit a funnel-like shape with its wider crater ended at the GaN crystal free surface. Both the crater and the pipe are generally hexagonal, although in some cases, the pipe is almost circular. These nanopipes are most likely the open-cores of screw dislocations formed under local thermodynamic equilibrium. The close similarity between the pipes in alpha-GaN and the micropipes (a few micrometers in diameter) observed in alpha-SiC crystals suggests that these hollow pipes are probably nucleated under the same mechanism. C1 USN,RES LAB,ADV MAT SYNTH LAB,WASHINGTON,DC 20375. RP QIAN, W (reprint author), CARNEGIE MELLON UNIV,DEPT MAT SCI & ENGN,PITTSBURGH,PA 15213, USA. RI Rowland, Larry/C-4487-2008; Skowronski, Marek/A-8934-2011 OI Skowronski, Marek/0000-0002-2087-0068 NR 14 TC 60 Z9 60 U1 2 U2 9 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-0248 J9 J CRYST GROWTH JI J. Cryst. Growth PD JUN PY 1995 VL 151 IS 3-4 BP 396 EP 400 DI 10.1016/0022-0248(95)00082-8 PG 5 WC Crystallography; Materials Science, Multidisciplinary; Physics, Applied SC Crystallography; Materials Science; Physics GA RE621 UT WOS:A1995RE62100027 ER PT J AU KELLY, JR TESK, JA SORENSEN, JA AF KELLY, JR TESK, JA SORENSEN, JA TI FAILURE OF ALL-CERAMIC FIXED PARTIAL DENTURES IN-VITRO AND IN-VIVO - ANALYSIS AND MODELING SO JOURNAL OF DENTAL RESEARCH LA English DT Article DE DENTAL CERAMICS; FAILURE ANALYSIS; PROSTHODONTICS ID FRACTURE AB Hertzian cone cracks visible at the loading site of 20 all-ceramic fixed partial dentures (FPDs), tested in vitro, led to the hypotheses that failure was due to the propagation of localized contact damage crack systems (Hertzian stress state) and that such damage was an unlikely clinical failure mode. Fractographic analysis of the 20 laboratory-failed and nine clinically-failed all-ceramic FPDs allowed for definitive testing of these hypotheses and a comparison between in vitro and in vivo failure behavior. In all cases, failure occurred in the FPD connectors (none from contact damage), with approximately 70 to 78% originating from the interface between the core and veneer ceramics. The coincidence between failure origins provides strong evidence that the in vitro test modeled aspects of structural behavior having clinical importance. The fractographic observations, coupled with the in vitro failure load data, furnished very specific boundary conditions which were applied to constrain mathematical models of FPD connector failure. Finite element analysis (FEA) of the laboratory FPDs found that maximum principal tensile stresses would occur at locations consistent with the fractographic observations only if: (1) there were appropriate elastic moduli differences between the ceramics; and (2) a small amount of abutment rotation was allowed. Weibull failure probability (P-f) calculations, incorporating FEA stress profiles, very closely replicated the laboratory failure distribution only when: (1) the veneer ceramic was much weaker than the core ceramic; and (2) the Weibull modulus of the core-veneer interface was much lower than that for the free veneer surface (i.e., the interface is of lower quality with regard to defects). This combined fractographic and mathematical analysis of FPD connectors suggests that the core-veneer interface is an important failure source and that the veneering ceramic overwhelmingly controls load-bearing capability. Observations from failed clinical restorations provided critical guidance in validating a laboratory test and focusing a mathematical failure model. C1 USN,SCH DENT,DENT RES INST DETACHMENT,BETHESDA,MD 20814. OREGON HLTH SCI UNIV,PORTLAND,OR 97201. RP KELLY, JR (reprint author), NATL INST STAND & TECHNOL,DENT & MED MAT GRP,BLDG 224-A143,GAITHERSBURG,MD 20899, USA. FU NIDCR NIH HHS [IA-2Y01-DE30001]; PHS HHS [DN 241120] NR 24 TC 226 Z9 232 U1 2 U2 15 PU AMER ASSOC DENTAL RESEARCH PI ALEXANDRIA PA 1619 DUKE ST, ALEXANDRIA, VA 22314 SN 0022-0345 J9 J DENT RES JI J. Dent. Res. PD JUN PY 1995 VL 74 IS 6 BP 1253 EP 1258 PG 6 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA RN489 UT WOS:A1995RN48900003 PM 7629333 ER PT J AU HEDRICK, JW GILL, D KISER, WR AF HEDRICK, JW GILL, D KISER, WR TI NEBULIZED SALINE AND BRONCHITIS SO JOURNAL OF FAMILY PRACTICE LA English DT Letter RP HEDRICK, JW (reprint author), USN HOSP,DEPT FAMILY PRACTICE,JACKSONVILLE,FL, USA. NR 4 TC 0 Z9 0 U1 0 U2 0 PU APPLETON & LANGE PI E NORWALK PA 25 VAN ZANT ST, E NORWALK, CT 06855 SN 0094-3509 J9 J FAM PRACTICE JI J. Fam. Pract. PD JUN PY 1995 VL 40 IS 6 BP 535 EP 536 PG 2 WC Primary Health Care; Medicine, General & Internal SC General & Internal Medicine GA RC213 UT WOS:A1995RC21300003 PM 7775900 ER PT J AU CLEARY, DD GNANALINGAM, S MCCOY, RP DYMOND, KF EPARVIER, FG AF CLEARY, DD GNANALINGAM, S MCCOY, RP DYMOND, KF EPARVIER, FG TI THE MIDDLE ULTRAVIOLET DAYGLOW SPECTRUM SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article ID LOWER THERMOSPHERE; NITRIC-OXIDE; SELF-ABSORPTION; EMISSION AB Spectroscopic measurements of the thermospheric dayglow in the wavelength range 1900 to 3400 Angstrom are presented. These measurements were made during two rocket experiments conducted on March 30, 1990, and March 19, 1992, from White Sands Missile Range, New Mexico. The data are presented to provide reference spectra in the lower, middle, and upper thermosphere. The 1990 observations, which were made during high geomagnetic activity, showed considerably enhanced nitric oxide (NO) intensities. Self-absorption theory is applied to the upsilon'' = 0 bands of the NO gamma system, It is found that a recently published self-absorption algorithm correctly accounts for the attenuation of the gamma(1,0) bands. There is a small discrepancy between the theory and observation for the (2,0) band and the (0,0) band intensity. The fact that there is reasonable agreement for all three bands suggests that both the NO slant column density and oscillator strengths for these bands are correct. C1 USN,RES LAB,WASHINGTON,DC 20375. NOAA,SPACE ENVIRONM LAB,BOULDER,CO 80303. RP CLEARY, DD (reprint author), USN,POSTGRAD SCH,DEPT PHYS,CODE PH CL,MONTEREY,CA 93943, USA. NR 18 TC 22 Z9 22 U1 0 U2 1 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES JI J. Geophys. Res-Space Phys. PD JUN 1 PY 1995 VL 100 IS A6 BP 9729 EP 9739 DI 10.1029/94JA03145 PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA RC077 UT WOS:A1995RC07700027 ER PT J AU BYNUM, EB CULP, RW BONATUS, TJ ALEXANDER, CE MCCARROLL, HR AF BYNUM, EB CULP, RW BONATUS, TJ ALEXANDER, CE MCCARROLL, HR TI REPEAT RUSSE BONE-GRAFTING AFTER FAILED BONE-GRAFT SURGERY FOR SCAPHOID NONUNION SO JOURNAL OF HAND SURGERY-BRITISH AND EUROPEAN VOLUME LA English DT Article AB We report the long-term outcome of repeat Russe bone grafting after failure of a previous Russe graft for scaphoid non-union. 15 patients were followed for a mean of 71 months after their last surgical procedure. 11 patients had undergone a single previous Russe graft and four patients had two previous graft attempts. Internal fixation was used in only three patients. Eight out of 15 (53%) patients achieved union after a single repeat graft and one out of four united after a third attempt. When union was achieved, range of motion was unchanged, grip strength was increased 10%, and pain was slight to none, allowing return to full employment in seven out of the nine patients. Ah patients who did not achieve union have either undergone a salvage procedure or are contemplating one. Based on the literature and our relatively low rate of union without internal fixation (53%), we recommend supplementary internal fixation if repeat Russe bone grafting is undertaken, When union is achieved, satisfactory results can be expected. RP BYNUM, EB (reprint author), USN HOSP,DEPT ORTHOPAED SURG,3600 RIVERS AVE,CHARLESTON,SC 29405, USA. NR 0 TC 9 Z9 9 U1 0 U2 0 PU CHURCHILL LIVINGSTONE PI EDINBURGH PA JOURNAL PRODUCTION DEPT, ROBERT STEVENSON HOUSE, 1-3 BAXTERS PLACE, LEITH WALK, EDINBURGH, MIDLOTHIAN, SCOTLAND EH1 3AF SN 0266-7681 J9 J HAND SURG-BRIT EUR JI J. Hand Surg.-Br. Eur Vol. PD JUN PY 1995 VL 20B IS 3 BP 373 EP 378 DI 10.1016/S0266-7681(05)80096-8 PG 6 WC Orthopedics; Surgery SC Orthopedics; Surgery GA RF902 UT WOS:A1995RF90200020 PM 7561415 ER PT J AU WEISS, WR OLOO, AJ JOHNSON, A KOECH, D HOFFMAN, SL AF WEISS, WR OLOO, AJ JOHNSON, A KOECH, D HOFFMAN, SL TI DAILY PRIMAQUINE IS EFFECTIVE FOR PROPHYLAXIS AGAINST FALCIPARUM-MALARIA IN KENYA - COMPARISON WITH MEFLOQUINE, DOXYCYCLINE, AND CHLOROQUINE PLUS PROGUANIL SO JOURNAL OF INFECTIOUS DISEASES LA English DT Article ID CHEMOPROPHYLAXIS; PREVENTION AB Primaquine was tested as a prophylactic drug against Plasmodium falciparum in a region in western Kenya in which malaria is holoendemic. Children 9-14 years old were randomized to receive regimens of daily primaquine, daily doxycycline, daily proguanil plus weekly chloroquine, daily vitamin plus weekly mefloquine, or daily vitamin alone, Primaquine, doxycycline, and mefloquine were equally effective in preventing both symptomatic and asymptomatic malarial infections. Chloroquine plus proguanil was the least effective regimen, There was no toxicity from daily primaquine during the 11 weeks of the study, Findings show that primaquine can be successfully used as a causal prophylactic regimen against falciparum malaria in western Kenya; chloroquine plus proguanil was not as efficacious as the three other preventive regimens; most Kenyan children receiving standard doses of mefloquine and doxycycline had lower than expected serum trough drug levels; and some volunteers with adequate mefloquine or doxycycline levels at trough developed asymptomatic parasitemias and clinical malaria. C1 NAVAL MED RES INST DETACHMENT KENYA,KISUMU,KENYA. KENYA GOVT MED RES CTR,NAIROBI,KENYA. USA,MED RES UNIT KENYA,NAIROBI,KENYA. USN,MED RES INST,BETHESDA,MD. NR 23 TC 80 Z9 81 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 JUN PY 1995 VL 171 IS 6 BP 1569 EP 1575 PG 7 WC Immunology; Infectious Diseases; Microbiology SC Immunology; Infectious Diseases; Microbiology GA RB298 UT WOS:A1995RB29800025 PM 7769294 ER PT J AU BAIRD, JK BASRI, H SUBIANTO, B FRYAUFF, DJ MCELROY, PD LEKSANA, B RICHIE, TL MASBAR, S WIGNALL, FS HOFFMAN, SL AF BAIRD, JK BASRI, H SUBIANTO, B FRYAUFF, DJ MCELROY, PD LEKSANA, B RICHIE, TL MASBAR, S WIGNALL, FS HOFFMAN, SL TI TREATMENT OF CHLOROQUINE-RESISTANT PLASMODIUM-VIVAX WITH CHLOROQUINE AND PRIMAQUINE OR HALOFANTRINE SO JOURNAL OF INFECTIOUS DISEASES LA English DT Note AB Optimal therapy for infection by chloroquine-resistant Plasmodium vivax has not been established, From 1992 to 1994 during three separate studies, 147 Javanese residents of Irian Jaya infected by P, vivax were treated with either chloroquine (25 mg of base/kg during 3 days or 10 mg of base/kg in one dose) plus primaquine (10 mg/kg during 28 days or 2.5 mg/kg during 3 days) (n = 78), chloroquine plus placebo (n = 50), or halofantrine (24 mg base/kg in 12 h; 12 = 19), There was no difference in tolerance to or side effects of any of the regimens, Within 14 days of starting therapy, therapeutic failure among these patients was 44% for chloroquine, 5% for chloroquine plus primaquine (P < .001), and 0 for halofantrine (P < .001), After 28 days, therapeutic failure was 78%, 15%, and 6%, respectively, Thus, chloroquine plus primaquine in combination and halofantrine alone are effective therapies for chloroquine-resistant P. vivax. C1 USN,MED RES UNIT 2,JAKARTA,INDONESIA. PROV HLTH SERV,IRIAN JAYA,INDONESIA. USN,MED RES INST,BETHESDA,MD. NR 15 TC 90 Z9 92 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 JUN PY 1995 VL 171 IS 6 BP 1678 EP 1682 PG 5 WC Immunology; Infectious Diseases; Microbiology SC Immunology; Infectious Diseases; Microbiology GA RB298 UT WOS:A1995RB29800051 PM 7769318 ER PT J AU SCHWARTZ, GN KESSLER, SW SZABO, JM BURRELL, LM FRANCIS, ML AF SCHWARTZ, GN KESSLER, SW SZABO, JM BURRELL, LM FRANCIS, ML TI NEGATIVE REGULATORS MAY MEDIATE SOME OF THE INHIBITORY EFFECTS OF HIV-1-INFECTED STROMAL CELL-LAYERS ON ERYTHROPOIESIS AND MYELOPOIESIS IN HUMAN BONE-MARROW LONG-TERM CULTURES SO JOURNAL OF LEUKOCYTE BIOLOGY LA English DT Article DE COLONY FORMING UNITS FOR GRANULOCYTES MACROPHAGES (CFU-GM); BURST FORMING UNITS ERYTHROID (BFU-E); BONE MARROW LONG-TERM CULTURES (LTC); HIV-1(ADA); INTERFERON-ALPHA (IFN-ALPHA); TUMOR NECROSIS FACTOR ALPHA (TNF-ALPHA); INTERLEUKIN-4 (IL-4); TRANSFORMING GROWTH FACTOR BETA (TGF-BETA) ID HUMAN-IMMUNODEFICIENCY-VIRUS; HEMATOPOIETIC PROGENITOR CELLS; RECOMBINANT INTERFERON-ALPHA; TUMOR-NECROSIS-FACTOR; HIV-1-INFECTED SUBJECTS; MONOCYTES MACROPHAGES; INVITRO GROWTH; REPLICATION; PROLIFERATION; INTERLEUKIN-4 AB This report presents results concerning the potential role of negative regulators in hematopoietic suppression observed in human immunodeficiency virus (HIV)-infected long-term cultures (LTC) of human bone marrow cells, Confluent stromal cell layers established from human bone marrow cells were exposed to HIV-1(ADA), a monocytotropic strain of HIV-1, A progressive increase in the concentration of HIV-1 p24 antigen in cultures exposed to HIV-1(ADA) demonstrated that there was a productive infection, Cells from both noninfected and HIV-infected stromal cell layers produced factors that stimulated the proliferation of colony-forming units for granulocytes and macrophages (CFU-GM) from noninfected CD34(+) cells, In contrast, when noninfected CD34(+) cells were directly cocultured on intact stromal cell layers fewer CFU-GM and burst-forming units for erythroid cells (CFU-GM) were detected in HN-infected LTC than in noninfected LTC, One week after the addition of CD34(+) cells, the number of CFU-GM in HIV-infected LTC in six of nine experiments was reduced compared to noninfected control LTC, In those six experiments, the number of CFU-GM was only 53 +/- 5% (SEM) of the number in noninfected LTC, The number of BFU-E in HIV-1-infected LTC was only 46 +/- 5% of the number in noninfected LTC (n = 5), There were fewer BFU-E in HIV-1-infected LTC, whether or not there was a reduced number of CFU-GM, Neutralizing antibody to tumor necrosis factor alpha (TNF-alpha) had no effect on the number of BFU-E in HIV-infected LTC, The number of BFU-E, however, was 2.1 +/- 0.2-fold greater (n = 3) in HIV-infected LTC incubated with neutralizing antibody to interferona-alpha. In HIV-infected LTC with decreased numbers of CFU-GM, the number of CFU-CM was approximately 2-fold greater after incubation of HIV-infected LTC with anti-interleukin-4 (IL-4), The effect of anti-TNF-alpha was variable, and anti-transforming growth factor-beta had no effect on the number of CFU GM in HIV-infected LTC, After 2 weeks, the number of CFU-GM in HN-infected LTC incubated with anti-IL-4 and anti-TNF-alpha was 2- to 4-fold greater than in untreated HIV-infected LTC, Antibody treatment did not promote an increase in the number of CFU CM in noninfected LTC or in LTC in which CFU-GM numbers were not reduced after HIV infection. These results demonstrate that some cells in the stromal cell layers of LTC were targets for HIV-1(ADA), and that HIV-infected stromal cell layers suppressed or delayed the production of both CFU-GM and BFU-E. These results also suggest that hematopoietic suppression in HIV-infected LTC may be mediated by growth-in-hibitory cytokines that are different for erythropoiesis and myelopoiesis. C1 USN,MED RES INST,IMMUNE CELL BIOL PROGRAM,BETHESDA,MD. WALTER REED ARMY MED CTR,DEPT HEMATOL ONCOL,WASHINGTON,DC 20307. WALTER REED ARMY MED CTR,DEPT CELLULAR IMMUNOL,WASHINGTON,DC 20307. RP SCHWARTZ, GN (reprint author), NCI,MED BRANCH,TRANPLANTAT THERAPY SECT,BLDG 10,RM 12N226,BETHESDA,MD 20892, USA. NR 53 TC 15 Z9 15 U1 0 U2 1 PU FEDERATION AMER SOC EXP BIOL PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3998 SN 0741-5400 J9 J LEUKOCYTE BIOL JI J. Leukoc. Biol. PD JUN PY 1995 VL 57 IS 6 BP 948 EP 955 PG 8 WC Cell Biology; Hematology; Immunology SC Cell Biology; Hematology; Immunology GA RE360 UT WOS:A1995RE36000021 PM 7540643 ER PT J AU HUSAIN, A LEE, JN AF HUSAIN, A LEE, JN TI INTRODUCTION TO SPECIAL ISSUE ON OPTICAL INTERCONNECTIONS FOR INFORMATION-PROCESSING SO JOURNAL OF LIGHTWAVE TECHNOLOGY LA English DT Editorial Material C1 USN,RES LAB,OPT INFORMAT PROC SECT,WASHINGTON,DC 20375. RP HUSAIN, A (reprint author), ARPA,MICROELECTR TECHNOL OFF,ARLINGTON,TX, USA. NR 0 TC 2 Z9 2 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 0733-8724 J9 J LIGHTWAVE TECHNOL JI J. Lightwave Technol. PD JUN PY 1995 VL 13 IS 6 BP 985 EP 986 PG 2 WC Engineering, Electrical & Electronic; Optics; Telecommunications SC Engineering; Optics; Telecommunications GA RE002 UT WOS:A1995RE00200001 ER PT J AU YANG, ZD DU, HH LIBERA, M SINGER, IL AF YANG, ZD DU, HH LIBERA, M SINGER, IL TI EFFECTS OF IMPLANTATION TEMPERATURE ON THE STRUCTURE, COMPOSITION, AND OXIDATION RESISTANCE OF ALUMINUM-IMPLANTED SIC SO JOURNAL OF MATERIALS RESEARCH LA English DT Article ID ION-IMPLANTATION; SILICON-CARBIDE; CHEMISTRY; BEHAVIOR AB alpha-SiC crystals were implanted with aluminum to a high dose at room temperature or 800 degrees C. Transmission electron microscopy showed that SiC was amorphized by room temperature implantation but remained crystalline after 800 degrees C implantation. Crystalline aluminum carbide was formed and aluminum redistribution took place in SiC implanted at 800 degrees C. Implanted and unimplanted crystals were oxidized in 1 atm flowing oxygen at 1300 degrees C. Amorphization led to accelerated oxidation of SiC. The oxidation resistance of SiC implanted at 800 degrees C was comparable with that of pure SiC. The oxidation layers formed on SiC implanted at both temperatures consisted of silica embedded with mullite precipitates. The phase formation during implantation and oxidation is consistent with thermodynamic predictions. The results from our current and earlier studies suggest that there exists an optimum range of implantation temperature, probably above 500 degrees C but below 800 degrees C, which preserves the substrate crystallinity and retains the high aluminum dosage, for the enhancement of oxidation resistance of SiC. C1 USN,RES LAB,DIV CHEM,WASHINGTON,DC 20375. RP YANG, ZD (reprint author), STEVENS INST TECHNOL,DEPT MAT SCI & ENGN,HOBOKEN,NJ 07030, USA. NR 22 TC 11 Z9 12 U1 0 U2 2 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 JUN PY 1995 VL 10 IS 6 BP 1441 EP 1447 DI 10.1557/JMR.1995.1441 PG 7 WC Materials Science, Multidisciplinary SC Materials Science GA QZ899 UT WOS:A1995QZ89900017 ER PT J AU FARABAUGH, EN ROBINS, L FELDMAN, A JOHNSON, CE AF FARABAUGH, EN ROBINS, L FELDMAN, A JOHNSON, CE TI GROWTH AND OXIDATION OF BORON-DOPED DIAMOND FILMS SO JOURNAL OF MATERIALS RESEARCH LA English DT Article ID CHEMICAL VAPOR-DEPOSITION; THIN-FILMS; ELECTRICAL CHARACTERIZATION; KINETICS; CARBON; DIODE AB Boron-doped diamond films have been grown by the hot filament chemical vapor deposition process. The feed gas was a mixture of argon, bubbled through a solution of B2O3 in ethanol, and hydrogen. The highest growth rate was 0.7 mu m/h. The boron concentration in the films depended on the concentration of B2O3 in the ethanol. The highest boron doping level, as measured by secondary ion mass spectroscopy, was 6300 atomic ppm. Raman spectroscopy and x-ray diffraction both confirmed the presence of crystalline diamond in the films. The frequency of the diamond Raman line decreased with increasing boron concentration. This shift may arise from an interaction of the charged carriers (holes) produced by the boron doping and the Raman-active optic phonon. The oxidation rates of doped and undoped films were measured by thermogravimetric analysis at 700 degrees C in flowing high purity oxygen. Films with a boron concentration of 6300 ppm oxidized at one-tenth the rate of undoped diamond. A layer of B2O3, detected on the surface of an oxidized B-doped film, is believed to act as a protective barrier that decreases the oxidation rate. C1 USN,CTR WEAP,CTR AIR WARFARE,CHINA LAKE,CA 93555. RP FARABAUGH, EN (reprint author), NATL INST STAND & TECHNOL,GAITHERSBURG,MD 20899, USA. NR 31 TC 11 Z9 11 U1 0 U2 6 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 JUN PY 1995 VL 10 IS 6 BP 1448 EP 1454 DI 10.1557/JMR.1995.1448 PG 7 WC Materials Science, Multidisciplinary SC Materials Science GA QZ899 UT WOS:A1995QZ89900018 ER PT J AU CHOW, GM KURIHARA, LK KEMNER, KM SCHOEN, PE ELAM, WT ERVIN, A KELLER, S ZHANG, YD BUDNICK, J AMBROSE, T AF CHOW, GM KURIHARA, LK KEMNER, KM SCHOEN, PE ELAM, WT ERVIN, A KELLER, S ZHANG, YD BUDNICK, J AMBROSE, T TI STRUCTURAL, MORPHOLOGICAL, AND MAGNETIC STUDY OF NANOCRYSTALLINE COBALT-COPPER POWDERS SYNTHESIZED BY THE POLYOL PROCESS SO JOURNAL OF MATERIALS RESEARCH LA English DT Article ID GIANT MAGNETORESISTANCE; METALLIC MATRIX; FE; PARTICLES; FILMS; FINE; NMR AB Nanocrystalline CoxCu100-x (4 less than or equal to x less than or equal to 49 at. %) powders were prepared by the reduction of metal acetates in a polyol. The structure of powders was characterized by x-ray diffraction (XRD), transmission electron microscopy (TEM), high resolution transmission electron microscopy (HRTEM), extended x-ray absorption fine structure (EXAFS) spectroscopy, solid-state nuclear magnetic resonance (NMR) spectroscopy, and vibrating sample magnetometry (VSM). As-synthesized powders were composites consisting of nanoscale crystallites of face-centered cubic (fcc) Cu and metastable face-centered cubic (fcc) Co. Complementary results of XRD, HRTEM, EXAFS, NMR, and VSM confirmed that there was no metastable alloying between Co and Cu. The NMR data also revealed that there was some hexagonal-closed-packed (hcp) Co in the samples. The powders were agglomerated, and consisted of aggregates of nanoscale crystallites of Co and Cu. Upon annealing, the powders with low Co contents showed an increase in both saturation magnetization and coercivity with increasing temperature. The results suggested that during preparation the nucleation of Cu occurred first, and the Cu crystallites served as nuclei for the formation of Co. C1 USN,RES LAB,DIV CONDENSED MATTER & RADIAT,WASHINGTON,DC 20375. USN,RES LAB,DIV CHEM,WASHINGTON,DC 20375. UNIV CONNECTICUT,DEPT PHYS,STORRS,CT 06269. JOHNS HOPKINS UNIV,DEPT PHYS,BALTIMORE,MD 21218. RP CHOW, GM (reprint author), USN,RES LAB,CTR BIOMOLEC SCI & ENGN,MOLEC INTERFACIAL INTERACT LAB,WASHINGTON,DC 20375, USA. NR 29 TC 54 Z9 54 U1 1 U2 11 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 JUN PY 1995 VL 10 IS 6 BP 1546 EP 1554 DI 10.1557/JMR.1995.1546 PG 9 WC Materials Science, Multidisciplinary SC Materials Science GA QZ899 UT WOS:A1995QZ89900031 ER PT J AU WASHBURN, AR AF WASHBURN, AR TI FINITE METHOD FOR A NONLINEAR ALLOCATION PROBLEM SO JOURNAL OF OPTIMIZATION THEORY AND APPLICATIONS LA English DT Article DE NONLINEAR ALLOCATION PROBLEMS; NETWORKS; OPTIMIZATION AB The problem considered is as follows: m resources are to be allocated to n activities, with resource i contributing linearly to the potential for activity j according to the coefficient E(i, j). The objective is to minimize some nonlinear function of the potentials. If the objective function is sufficiently well behaved, the problem can be solved in finitely many steps using the method described in this paper. RP WASHBURN, AR (reprint author), USN,POSTGRAD SCH,OPERAT RES DEPT,MONTEREY,CA, USA. NR 24 TC 6 Z9 6 U1 0 U2 0 PU PLENUM PUBL CORP PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 SN 0022-3239 J9 J OPTIMIZ THEORY APP JI J. Optim. Theory Appl. PD JUN PY 1995 VL 85 IS 3 BP 705 EP 726 DI 10.1007/BF02193063 PG 22 WC Operations Research & Management Science; Mathematics, Applied SC Operations Research & Management Science; Mathematics GA RE407 UT WOS:A1995RE40700011 ER PT J AU HERBERS, THC ELGAR, S GUZA, RT OREILLY, WC AF HERBERS, THC ELGAR, S GUZA, RT OREILLY, WC TI INFRAGRAVITY-FREQUENCY (0.005-0.05 HZ) MOTIONS ON THE SHELF .2. FREE WAVES SO JOURNAL OF PHYSICAL OCEANOGRAPHY LA English DT Article ID PERIOD EDGE WAVES; SURF BEAT; COASTAL SEICHES; INTERNAL WAVES; GENERATION; MODEL; ENERGY AB In Part I, the energy levels of ocean surface waves at infragravity frequencies (nominally 0.005-0.05 Hz) locally forced by swell in 13-m water depth were shown to be predicted accurately by second-order nonlinear wave theory. However, forced infragravity waves were consistently much less energetic than free infragravity waves. Here, in Part II, observations in depths between 8 and 204 m, on Atlantic and Pacific shelves, are used to investigate the sources and variability of free infragravity wave energy. Both free and forced infragravity energy levels generally increase with increasing swell energy and decreasing water depth, but their dependencies are markedly different. Although free waves usually dominate the infragravity frequency band, forced waves contribute a significant fraction of the total infragravity energy with high energy swell and/or in very shallow water. The observed h(-1) variation of free infragravity energy with increasing water depth h is stronger than the h(-1/2) dependence predicted for leaky surface gravity waves propagating approximately perpendicular to local depth contours, but is consistent with a heuristic, geometrical optics-based (WKB) model of the refractive trapping of a directionally broad wave field generated close to shore. Preliminary analysis shows that free infragravity waves are indeed directionally broad and that the propagation directions of infragravity waves and incident swell are related. Free infragravity energy levels also depend on the general geographic surroundings. Comparisons of observations from the same depth and with similar swell conditions, but on different shelves, suggest that more free infragravity wave energy is radiated from wide, sandy beaches than from rocky, cliffed coasts and that less energy is trapped on a narrow shelf than on a wide shelf. C1 WASHINGTON STATE UNIV,SCH ELECT ENGN & COMP SCI,PULLMAN,WA 99164. SCRIPPS INST OCEANOG,CTR COASTAL STUDIES,LA JOLLA,CA. RP HERBERS, THC (reprint author), USN,POSTGRAD SCH,DEPT OCEANOG,CODE OC-HE,MONTEREY,CA 93943, USA. NR 58 TC 70 Z9 73 U1 0 U2 5 PU AMER METEOROLOGICAL SOC PI BOSTON PA 45 BEACON ST, BOSTON, MA 02108-3693 SN 0022-3670 J9 J PHYS OCEANOGR JI J. Phys. Oceanog. PD JUN PY 1995 VL 25 IS 6 BP 1063 EP 1079 DI 10.1175/1520-0485(1995)025<1063:IFHMOT>2.0.CO;2 PN 1 PG 17 WC Oceanography SC Oceanography GA RE588 UT WOS:A1995RE58800003 ER PT J AU GRYK, TJ BARTRAM, RH AF GRYK, TJ BARTRAM, RH TI EMBEDDED MOLECULAR CLUSTER MODELING OF TL-0(1), IN-0(1) AND GA-0(1) CENTERS IN POTASSIUM-CHLORIDE SO JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS LA English DT Article DE COLOR CENTERS ID ALKALINE-EARTH FLUORIDES; ATOMIC THALLIUM CENTERS; OPTICAL-PROPERTIES; SPIN-RESONANCE; HALIDES; POTENTIALS; KCL AB Ab initio, embedded-cluster RHF-SCF-LCAO molecular-orbital calculations were performed on both ground and excited states of the Tl-0(1) center in potassium chloride. Effective core potentials and valence orbitals were employed on the thallium atom and its nearest-neighbor chlorine ions. The remaining ions in the cluster were represented either by bare effective core potentials or by point ions. Spin-orbit effects were calculated perturbatively in the intermediate-coupling regime. External interactions of the molecular cluster were represented by pair potentials, and simultaneous relaxation of the cluster and surrounding lattice was accomplished with a modified lattice-statics program. Optical absorption energies for transitions to the first two excited states, the optical emission energy and a ground-state vibrational frequency were determined successfully. A simplified model based on a single-center expansion and fixed point-ion lattice, validated for the Tl-0(1) center, was also employed to determine the optical absorption energies of the analogous In-0(1) and Ga-0(1) centers in potassium chloride and to explain the non-radiative de-excitation of these centers. C1 UNIV CONNECTICUT,DEPT PHYS,STORRS,CT 06269. UNIV CONNECTICUT,INST MAT SCI,STORRS,CT 06269. RP GRYK, TJ (reprint author), USN,CTR UNDERSEA WARFARE,NEW LONDON,CT 06320, USA. NR 20 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 0022-3697 J9 J PHYS CHEM SOLIDS JI J. Phys. Chem. Solids PD JUN PY 1995 VL 56 IS 6 BP 863 EP 869 DI 10.1016/0022-3697(95)00002-X PG 7 WC Chemistry, Multidisciplinary; Physics, Condensed Matter SC Chemistry; Physics GA QX160 UT WOS:A1995QX16000013 ER PT J AU MAKRIS, NC AVELINO, LZ MENIS, R AF MAKRIS, NC AVELINO, LZ MENIS, R TI DETERMINISTIC REVERBERATION FROM OCEAN RIDGES SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA LA English DT Article RP MAKRIS, NC (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 24 TC 29 Z9 30 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0001-4966 J9 J ACOUST SOC AM JI J. Acoust. Soc. Am. PD JUN PY 1995 VL 97 IS 6 BP 3547 EP 3574 DI 10.1121/1.412440 PG 28 WC Acoustics; Audiology & Speech-Language Pathology SC Acoustics; Audiology & Speech-Language Pathology GA RD453 UT WOS:A1995RD45300011 ER PT J AU DRUMHELLER, DM HUGHES, DH OCONNOR, BT GAUMOND, CF AF DRUMHELLER, DM HUGHES, DH OCONNOR, BT GAUMOND, CF TI IDENTIFICATION AND SYNTHESIS OF ACOUSTIC SCATTERING COMPONENTS VIA THE WAVELET TRANSFORM SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA LA English DT Article RP DRUMHELLER, DM (reprint author), USN,RES LAB,DIV ACOUST,WASHINGTON,DC 20375, USA. NR 8 TC 14 Z9 14 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0001-4966 J9 J ACOUST SOC AM JI J. Acoust. Soc. Am. PD JUN PY 1995 VL 97 IS 6 BP 3649 EP 3656 DI 10.1121/1.412412 PG 8 WC Acoustics; Audiology & Speech-Language Pathology SC Acoustics; Audiology & Speech-Language Pathology GA RD453 UT WOS:A1995RD45300020 ER PT J AU GAUNAURD, GC HUANG, H WERTMAN, W AF GAUNAURD, GC HUANG, H WERTMAN, W TI ACOUSTIC SCATTERING BY ELASTIC SPHERICAL-SHELLS THAT HAVE MULTIPLE MASSIVE INTERNAL COMPONENTS ATTACHED BY COMPLIANT MOUNTS AND A SIMPLE METHOD FOR CALCULATING THE RESPONSE FROM INTERNALLY LOADED SPHERICAL-SHELLS - RESPONSE SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA LA English DT Letter RP GAUNAURD, GC (reprint author), USN,CTR SURFACE WARFARE,WHITE OAK,SILVER SPRING,MD 20903, USA. NR 6 TC 1 Z9 1 U1 0 U2 2 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0001-4966 J9 J ACOUST SOC AM JI J. Acoust. Soc. Am. PD JUN PY 1995 VL 97 IS 6 BP 3892 EP 3894 DI 10.1121/1.412402 PG 3 WC Acoustics; Audiology & Speech-Language Pathology SC Acoustics; Audiology & Speech-Language Pathology GA RD453 UT WOS:A1995RD45300045 ER PT J AU MANSOUR, AN MELENDRES, CA AF MANSOUR, AN MELENDRES, CA TI A STUDY OF THE STRUCTURE AND THE MORPHOLOGY OF OXIDE-FILMS ON AMORPHOUS AL-FE-CE ALLOYS BY XPS AND SEM SO JOURNAL OF THE ELECTROCHEMICAL SOCIETY LA English DT Article ID X-RAY PHOTOELECTRON; LOW-ENERGY ELECTRONS; METALLIC GLASSES; ALUMINUM; SPECTROSCOPY; AL90FEXCE10-X; OXIDATION; CHEMISTRY; ESCA AB Aluminum-based metallic glasses are of technological importance due to their high strength, low density, and anticipated high resistance to corrosion. We report on the corrosion characteristics of melt-spun ribbons of Al90Fe10-x Ce-x (x = 3, 5, and 7). The amorphous alloys showed excellent corrosion properties in aqueous NaCl. We have also examined the composition, structure, and morphology of the native and passive oxide films using scanning electron microscopy (SEM), x-ray photoelectron spectroscopy (XPS), and angle-resolved XPS. We show that the composition of the native oxide film is that of Alo(x)(OH)(y). The thickness of the native oxide is estimated from angle-resolved XPS data to be about 1.6 to 3.1 nm (i.e., nanometer). Passive films were formed in 0.9 weight percent (0.15M) NaCl solution by potentiostating below the pitting Potential for 30 and 60 min. The passive oxide films contain oxidized Al, Fe, and Ce. The chemistry of Al in the passive oxide films is also that of AlOx(OH)(y). Iron appears to be present in the passive film as Fe3O4 and Fe2O3 and/or FeOOH with varying mole fractions depending on alloy composition. Cerium in the passive film appears to be present in the +3 oxidation state as Ce2O3 or Ce(OH)(3). A small fraction of Ce in the passive film of Al90Fe3Ce7 is present in the +4 oxidation states as CeO2. C1 ARGONNE NATL LAB,ARGONNE,IL 60439. RP MANSOUR, AN (reprint author), USN,CTR SURFACE WARFARE,CARDEROCK DIV,SILVER SPRING,MD 20903, USA. NR 39 TC 19 Z9 20 U1 0 U2 5 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 JUN PY 1995 VL 142 IS 6 BP 1961 EP 1968 DI 10.1149/1.2044223 PG 8 WC Electrochemistry; Materials Science, Coatings & Films SC Electrochemistry; Materials Science GA RC289 UT WOS:A1995RC28900049 ER PT J AU AFANAS'EV, VV REVESZ, AG BROWN, GA HUGHES, HL AF AFANAS'EV, VV REVESZ, AG BROWN, GA HUGHES, HL TI CHARGE INSTABILITY OF BONDED SILICON DIOXIDE LAYER INDUCED BY WET-PROCESSING SO JOURNAL OF THE ELECTROCHEMICAL SOCIETY LA English DT Article ID INTERFACE; ELECTRON; OXIDES AB The charging of buried oxide (BOX) of bonded and etched-back silicon-on-insulator (BESOI) structures caused by electrical stress was studied. The top SI layer was removed and the structures with bare oxide were immersed in H2O before evaporation of aluminum. This treatment results in an ion-type charge instability effect observed at room temperature. If the top Si layer was removed by dry etching or not removed at all, then the structures do not exhibit a comparable effect even at 250 degrees C; neither do wet-treated nonbonded thermal SiO2 layers. Replacement of H2O by D2O delays the ionic charge buildup, suggesting an isotopic effect. It is suggested that the high-temperature postbonding anneal results in structural change in the BOX layer which promotes the transport of hydrogen-related charged species. C1 ST PETERSBURG STATE UNIV, INST PHYS, ST PETERSBURG 198904, RUSSIA. REVESZ ASSOCIATES, BETHESDA, MD 20817 USA. TEXAS INSTRUMENTS INC, DALLAS, TX 75265 USA. USN, RES LAB, WASHINGTON, DC 20375 USA. NR 16 TC 2 Z9 2 U1 1 U2 3 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 65 SOUTH MAIN STREET, PENNINGTON, NJ 08534 USA SN 0013-4651 J9 J ELECTROCHEM SOC JI J. Electrochem. Soc. PD JUN PY 1995 VL 142 IS 6 BP 1983 EP 1986 DI 10.1149/1.2044227 PG 4 WC Electrochemistry; Materials Science, Coatings & Films SC Electrochemistry; Materials Science GA RC289 UT WOS:A1995RC28900053 ER PT J AU BOTROS, BAM SOLIMAN, AK SALIB, AW OLSON, J HIBBS, RG WILLIAMS, JC DARWISH, M ELTIGANI, A WATTS, DM AF BOTROS, BAM SOLIMAN, AK SALIB, AW OLSON, J HIBBS, RG WILLIAMS, JC DARWISH, M ELTIGANI, A WATTS, DM TI COXIELLA-BURNETII ANTIBODY PREVALENCES AMONG HUMAN-POPULATIONS IN NORTHEAST AFRICA DETERMINED BY ENZYME-IMMUNOASSAY SO JOURNAL OF TROPICAL MEDICINE AND HYGIENE LA English DT Article DE COXIELLA BURNETII; SEROPREVALENCES; ENZYME IMMUNOASSAY; NORTHEAST AFRICA ID LINKED IMMUNOSORBENT-ASSAY; Q-FEVER; RESPONSES AB Retrospective serosurveys were conducted to determine the prevalence of antibody to phase-I Coxiella burnetii among humans in various locations of north-east Africa. Sera were tested by the enzyme immunoassay (EIA). Initially the EIA was compared with the standard indirect fluorescent antibody (IFA) method for the detection of antibody to C. burnetii. Results indicated that the EIA was slightly less sensitive (88%), but highly specific (94%) and less subjective than the IFA technique. EIA was subsequently adopted for estimating prevalences in the studied human populations. Data obtained by ELA indicated that the prevalence of C. burnetii antibody among adult Egyptian blood donors was 20% (n=358) in the Suez Canal area, 16% (n=501) in the Nile Valley and 10% (n=427) in the Nile Delta. Among adult patients with acute, undifferentiated fever in Egypt, the prevalence was 28% (n=50) of acute sera, with seroconversion in 12% of convalescent sera. Antibody to C. burnetii was detected by ELA in the sera of 25% (n=71) of cattle workers in Egypt, 10% (n=100) of housewives in Sudan, and 37% (n=104) of adults in north-west Somalia. Following a fever outbreak affecting all ages in northern Sudan, IgG antibody to C. burnetii was present in 54% of the febrile persons (n=185) and in 53% of afebrile persons (n=186). IgM antibody to C. burnetii was demonstrated in 29% of the febrile persons and 15% of the afebrile persons. These results implicate C. burnetii as a possibly important and under-reported cause of human disease and undiagnosed fevers in north-east Africa. C1 USN,DIV VIROL,MED RES UNIT 3,CAIRO,EGYPT. CTR DIS CONTROL,ATLANTA,GA. USA,MED RES INST INFECT DIS,DIV BACTERIOL,INTRACELLULAR PATHOGENS BRANCH,FREDERICK,MD 21701. AIN SHAMS UNIV,FAC MED,CAIRO,EGYPT. MINIST HLTH SUDAN,NATL HLTH LABS,KHARTOUM,SUDAN. USN,MED RES INST DETACHMENT,LIMA,PERU. RI Saad, Magdi/H-5561-2013 OI Saad, Magdi/0000-0003-2111-8115 NR 20 TC 6 Z9 6 U1 0 U2 2 PU BLACKWELL SCIENCE LTD PI OXFORD PA OSNEY MEAD, OXFORD, OXON, ENGLAND OX2 0EL SN 0022-5304 J9 J TROP MED HYG JI J. Trop. Med. Hyg. PD JUN PY 1995 VL 98 IS 3 BP 173 EP 178 PG 6 WC Public, Environmental & Occupational Health; Tropical Medicine SC Public, Environmental & Occupational Health; Tropical Medicine GA RD739 UT WOS:A1995RD73900007 PM 7783275 ER PT J AU VUKOVICH, JG MCKENNA, PH GRICE, GP DOCIMO, SG AF VUKOVICH, JG MCKENNA, PH GRICE, GP DOCIMO, SG TI A HETEROTOPIC AUTOINNERVATED URINARY NEOSPHINCTER SO JOURNAL OF UROLOGY LA English DT Article DE URINARY INCONTINENCE; SURGICAL FLAPS ID MUSCLE TRANSPLANTATION; INCONTINENCE; SPHINCTER AB Twenty-six female adult New Zealand white rabbits underwent surgical denervation of a gracilis muscle to study the possibility of developing an autologous neosphincter innervated by the pudendal nerve. The study was conducted in 2 phases. In both Phase I and Phase II, the study group had the motor nerve to the gracilis, a branch of the obturator nerve and the pudendal nerve coapted in the perineum. The control group was left denervated. In Phase I, all muscle flaps were wrapped around the urogenital sinus. In Phase II, the muscle flaps were returned to their anatomic location. With balbocavernosus reflex testing, 89% of the reinnervated group and 60% of the denervated group from Phase I and 86% of the reinnervated group and none of the denervated group from Phase II had a contractile response in the muscle flap. In Phase II, histologic examination of the gracilis muscle was suggestive of an early change in muscle myofiber physiology from fast twitch to slow twitch in the reinnervated group only. In the rabbit, a transplanted vascularized muscle flap, cross-innervated by the pudendal nerve has a reproducible response to bulbocavernosus reflex testing. This suggests that a transplanted muscle might be able to assume some of the characteristics of the voluntary urinary sphincter. The rabbit is a useful model in which to investigate the potential of the heterotopic neosphincter. C1 USN,MED CTR,DEPT PATHOL,PORTSMOUTH,VA. RP VUKOVICH, JG (reprint author), USN,MED CTR,DEPT UROL,PORTSMOUTH,VA, USA. NR 13 TC 1 Z9 1 U1 0 U2 1 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0022-5347 J9 J UROLOGY JI J. Urol. PD JUN PY 1995 VL 153 IS 6 BP 2010 EP 2013 DI 10.1016/S0022-5347(01)67392-0 PG 4 WC Urology & Nephrology SC Urology & Nephrology GA QX369 UT WOS:A1995QX36900092 PM 7752385 ER PT J AU ROBERTS, RS LOOMIS, HH AF ROBERTS, RS LOOMIS, HH TI PARALLEL COMPUTATION STRUCTURES FOR A CLASS OF CYCLIC SPECTRAL-ANALYSIS ALGORITHMS SO JOURNAL OF VLSI SIGNAL PROCESSING LA English DT Article ID MODULATED SIGNALS AB A digital frequency smoothing algorithm for cyclic spectral analysis is described. Partitioning schemes are presented that have properties amenable to parallel implementation, Parallel computation structures, based on the partitioning schemes, are described and system architectures proposed. C1 USN,POSTGRAD SCH,DEPT ELECT & COMP ENGN,MONTEREY,CA 93943. UNIV CALIF DAVIS,DEPT ELECT ENGN & COMP SCI,SIGNAL PROC GRP,DAVIS,CA 95616. RP ROBERTS, RS (reprint author), LOS ALAMOS NATL LAB,ESA MT GRP,MS J-580,LOS ALAMOS,NM 87545, USA. NR 9 TC 3 Z9 3 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0922-5773 J9 J VLSI SIGNAL PROC JI J. VLSI Signal Process. PD JUN PY 1995 VL 10 IS 1 BP 25 EP 40 DI 10.1007/BF02407024 PG 16 WC Computer Science, Information Systems; Engineering, Electrical & Electronic SC Computer Science; Engineering GA RJ081 UT WOS:A1995RJ08100002 ER PT J AU VanBonn, WG Ridgway, SH Williams, BH AF VanBonn, WG Ridgway, SH Williams, BH TI Chronic refractory emesis associated with a colonic lesion in a California sea lion (Zalophus californianus) SO JOURNAL OF ZOO AND WILDLIFE MEDICINE LA English DT Article DE sea lion; Zalophus californianus; Clostridium spp; vomiting; colon; enteritis AB An adult castrated male California sea Lion, Zalophus californianus, developed a pattern of intermittent vomiting of fish that progressed and was unresponsive to medical and behavioral intervention. The animal had been collected from the wild in 1985 and was utilized in the U.S. Navy's marine mammal program until March 1993. Necropsy findings included a ruptured saccular diverticulum of the distal colon and a peritoneal effusion. Campylobacter sputorum, Clostridium perfringens, Escherichia coli, and Streptococcus canis were isolated from the peritoneal effusion. Large numbers of gram-positive bacilli, consistent with Clostridium spp., were observed within the affected tissues on histologic sections. The cause of the gross lesion in the affected section of gut was not evident. A long-standing ulcerative or possibly obstructive lesion responsible for local stasis and conditions favorable for clostridial overgrowth was suspected. Gastrointestinal clostridial infections have not been previously reported in a California sea lion. Additionally, there have been no reports of vomiting associated with large colonic disease in marine mammals. C1 ARMED FORCES INST PATHOL,WASHINGTON,DC 20306. USN COMMAND,CONTROL & OCEAN SURVEILLANCE CTR,RES DEV TEST & EVALUAT DIV,SAN DIEGO,CA 92152. NR 9 TC 2 Z9 2 U1 0 U2 0 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 JUN PY 1995 VL 26 IS 2 BP 286 EP 292 PG 7 WC Veterinary Sciences SC Veterinary Sciences GA TV008 UT WOS:A1995TV00800015 ER PT J AU OLSEN, EA AF OLSEN, EA TI MARINE ENVIRONMENTAL COOPERATION IN NORTHEAST ASIA SO KOREAN JOURNAL OF DEFENSE ANALYSIS LA English DT Article AB Marine environmental confidence-building measures in Northeast Asia have received considerable attention from experts, and are acknowledged by policy makers to be important, yet they remain remarkably arcane from the latter's perspective. Although these CBMs are functioning among specialists, it is uncertain whether their appeal can be broadened for a larger audience. The East Sea (Sea of Japan) is a major focus of these CBMs. Despite this body of water's proximity to Japan-a country renowned for its marine expertise and interests-Japan's global scope and its regional priorities have produced some indifference toward it. That was rectified somewhat, but not as much as Japanese experts believe it should be. South Koreans are much more attentive to the East Sea, partly because the scope of their marine environmental agenda is constrained by capabilities to act locally. Although the ROK's national resources are more limited than Japan's, the sharper focus of its agenda makes it comparable to Japan when dealing with the water which both divides and unites them. There is a credible cadre of experts in South Korea who warrant serious international attention. They are engaged in a variety of maritime endeavors that constitute the framework for marine environmental CBMs. For Korea-Japan maritime CBMs to be fully effective, it will require the participation of North Korean experts, and there are some positive indicators that North Korea is prepared to engage in these matters. There is a genuine prospect for these CBMs, but some doubts exist about their benign nature and about the gaps between the three Northeast Asian states' levels of expertise. Although their potential is great, one must remain skeptical until leaders in Seoul, Pyongyang, and Tokyo are convinced they are not too arcane to warrant a high priority. RP OLSEN, EA (reprint author), USN,POSTGRAD SCH,MONTEREY,CA 93943, USA. NR 36 TC 1 Z9 1 U1 0 U2 1 PU KOREAN INST DEFENSE ANALYSES PI SEOUL PA OFFICE RESEARCH COOPERATION, PO BOX 250, SEOUL 130-650, SOUTH KOREA SN 1016-3271 J9 KOREAN J DEF ANAL JI Korean J. Def. Anal. PD SUM PY 1995 VL 7 IS 1 BP 7 EP 28 PG 22 WC International Relations SC International Relations GA RQ786 UT WOS:A1995RQ78600001 ER PT J AU POTOCHNIK, SJ PEHRSSON, PE HSU, DSY CALVERT, JM AF POTOCHNIK, SJ PEHRSSON, PE HSU, DSY CALVERT, JM TI SELECTIVE COPPER CHEMICAL-VAPOR-DEPOSITION USING PD-ACTIVATED ORGANOSILANE FILMS SO LANGMUIR LA English DT Letter ID ROOM-TEMPERATURE; OXIDATION; CU3SI AB Conductive, adherent copper films-were deposited selectively on diamond subtrates using ligating aminosilane self-assembled films and a Pd-based catalyst, Copper chemical vapor deposition (CVD) was performed at 444-456 K in a cold-walled chamber using 4 x 10(-3) Pa of (hexafluoroacetylacetonato)-copper(I)-trimethylvinylsilane mixed 1:1 (v/v) with H-2 carrier gas. In the absence of the:Pd catalyst, only isolated copper particles deposited on hydrogenated or aminosilane-coated diamond. The Pd;catalyst enhanced selectivity for Cu deposition by a factor of 10(3) to 10(4). Copper patterns with feature sizes to 1 mu m were formed by lithographically patterning an aminosilane film on diamond using UV (193 nm) radiation and a contact mask prior to catalyst deposition and copper CVD. The Pd catalyst also enhanced Cu deposition on aminosilane-coated Si(100) and quartz substrates. Treating substrates with octadecylsilane or aminosilane self-assembled films without the bound Pd catalyst reduced copper deposition compared to Si(100), native oxide or hydrogenated diamond surfaces. C1 USN,RES LAB,SURFACE CHEM BRANCH,WASHINGTON,DC 20375. RP POTOCHNIK, SJ (reprint author), USN,RES LAB,CTR BIOMOLEC SCI & ENGN,CODE 6174,CODE 6900,WASHINGTON,DC 20375, USA. NR 30 TC 56 Z9 56 U1 0 U2 5 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0743-7463 J9 LANGMUIR JI Langmuir PD JUN PY 1995 VL 11 IS 6 BP 1841 EP 1845 DI 10.1021/la00006a001 PG 5 WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science, Multidisciplinary SC Chemistry; Materials Science GA RF223 UT WOS:A1995RF22300001 ER PT J AU GEDRIDGE, RW HIGA, KT NISSAN, RA AF GEDRIDGE, RW HIGA, KT NISSAN, RA TI TE-125, C-13 AND H-1-NMR CHARACTERIZATION OF A SERIES OF DIORGANOTELLURIUM(II) AND TETRAORGANOTELLURIUM(IV) COMPOUNDS SO MAGNETIC RESONANCE IN CHEMISTRY LA English DT Article DE TE-125 NMR; C-13 NMR; H-1 NMR; DIORGANOTELLURIUM(II) COMPOUNDS; TETRAORGANOTELLURIUM(IV) COMPOUNDS; SUBSTITUENT EFFECTS ID MAGNETIC-RESONANCE SPECTROSCOPY; SYNTHETIC APPLICATIONS; METALORGANIC GROWTH; ORGANIC-COMPOUNDS; CHEMICAL-SHIFTS; = ME; TELLURIDES; DITELLURIDES; REDUCTION; SELENIDES AB Te-125, C-13 and H-1 NMR studies on a series of symmetric diorganotellurium(II) [R(2)Te, where R = Me, Et, n-Bu, CH(2)SiMe(3), allyl, vinyl, C=CMe, C=CEt, C=C(n-Pr), C=C(t-Bu), C=C(SiMe(3)) and C=CPh], unsymmetric diorganotellurium(II) (RTeR') (where R = allyl, R' = Me, Et, i-Pr, t-Bu; R = Me and R' = benzyl), symmetric bis(alkyltelluro)ethyne (RTeC=CTeR, where R = Me and Et) and symmetric tetraorganotellurium(IV) (R(4)Te, where R = Me, n-Bu, CH(2)SiMe(3) and vinyl) compounds are presented. Te-125 was acquired under H-1-decoupled and H-1-coupled conditions. Whereas the H-1-decoupled Te-125 NMR spectra are extremely useful in identifying low levels of tellurium containing impurities, the H-1-coupled Te-125 experiments allow for structure determination and identification of long- and short-range coupling pathways. H-1 and C-13 NMR were used to assess purity in terms of organic materials which can include solvents, decomposition byproducts and unwanted organometallic compounds from side reactions occurring during synthesis. Te-125 satellites are observed in the H-1 and C-13 NMR spectra and are useful in resonance assignments and in identification of long- and short-range coupling pathways. The effects of substituents on chemical shifts and coupling constants are discussed. C1 USN,CTR AIR WARFARE,RES DEPT,DIV CHEM,DIV WEAPONS,CHINA LAKE,CA 93555. NR 43 TC 6 Z9 6 U1 0 U2 2 PU JOHN WILEY & SONS LTD PI W SUSSEX PA BAFFINS LANE CHICHESTER, W SUSSEX, ENGLAND PO19 1UD SN 0749-1581 J9 MAGN RESON CHEM JI Magn. Reson. Chem. PD JUN PY 1995 VL 33 IS 6 BP 441 EP 448 DI 10.1002/mrc.1260330606 PG 8 WC Chemistry, Multidisciplinary; Chemistry, Physical; Spectroscopy SC Chemistry; Spectroscopy GA RD362 UT WOS:A1995RD36200005 ER PT J AU BOWLES, FA WOOD, WT AF BOWLES, FA WOOD, WT TI DIMINISHED AMPLITUDE REFLECTIONS (FADEOUT) IN BERMUDA RISE STRATIFICATION SO MARINE GEOLOGY LA English DT Article ID ABYSSAL-PLAIN AB Single and multichannel deep-tow seismic records collected on the southwestern Bermuda Rise reveal areas within the acoustic layering where the intensity of reflectors fade or even disappear over lateral distances of 20-60 m. The fadeouts are conspicuously present in a highly stratified interval consisting of lower to middle Eocene siliceous turbidites and thin, cherty layers interbedded with hemipelagic/pelagic clays and oozes. Acoustic scattering at rough interfaces, gas pockets, and changes in geoacoustic properties do not readily account for the diminished amplitudes of the reflections. Detailed examination of the wave coda from selected fadeout areas reveal changes in reflector geometry due to faulting of the sediments. Strong reflections within the stratified sequence are thought to result from the thin, high impedance chert beds that occur within the turbidite layers. Secondary reflections (multiples) generated by the hard, chert interfaces are thought to interact constructively with primary reflections to generate strong interference reflections, but also destructively to cause fadeouts where the faulting has changed the layer configuration. Alternatively, the fadeouts may result from the dissolution of chert beds due to the upward migration of silica-deficient pore fluids along faults and fractures in response to excess pore pressures. RP BOWLES, FA (reprint author), USN,RES LAB,DIV SEAFLOOR SCI,OCEAN SCI DIRECTORATE,BAY ST LOUIS,MS 39529, USA. NR 22 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0025-3227 J9 MAR GEOL JI Mar. Geol. PD JUN PY 1995 VL 125 IS 1-2 BP 133 EP 141 DI 10.1016/0025-3227(95)00023-R PG 9 WC Geosciences, Multidisciplinary; Oceanography SC Geology; Oceanography GA RM342 UT WOS:A1995RM34200009 ER PT J AU CHU, PC AF CHU, PC TI P-VECTOR METHOD FOR DETERMINING ABSOLUTE VELOCITY FROM HYDROGRAPHIC DATA SO MARINE TECHNOLOGY SOCIETY JOURNAL LA English DT Article ID NORTH-ATLANTIC CIRCULATION; GENERAL-CIRCULATION; OCEAN; FIELD AB Several major techniques (Stommel-Schott method, Wunsch method, and Bernoulli method) that have been developed to quantitatively estimate the geostrophic velocity at the reference level, have the same order of dynamical sophistication (geostrophy, hydrostatic, and density conservation.) From a technical point of view, the Stommel-Schott method is an overdetermined system (the number of equations is much larger than the number of variables), however, the Wunsch method is an underdetermined system (the number of equations is much smaller than the number of variables). Based on the same dynamical and thermodynamical framework, a simple, well-posed system (P-vector method) is proposed in this study. Consistent with geostrophy, the system is assumed non-dissipative. The conservation of mass and potential vorticity leads to the condition that the velocity vector is perpendicular to both density (p) and potential vorticity (q=f partial derivative p/partial derivative z) gradients, and that the velocity can be represented as V(x, y, z) = r(x, y, z)P (x, y, z), where P = (del p X del q)/\del p x del q\. The unit vector, P, is computed from the density field, and the parameter r(x, y, z) is determined by the thermal-wind relation. Furthermore, an error reduction scheme is also proposed in this study. RP CHU, PC (reprint author), USN,POSTGRAD SCH,DEPT OCEANOG,MONTEREY,CA 93943, USA. NR 20 TC 33 Z9 58 U1 1 U2 5 PU MARINE TECHNOLOGY SOC INC PI WASHINGTON PA 1828 L ST NW 9TH FLOOR, WASHINGTON, DC 20036 SN 0025-3324 J9 MAR TECHNOL SOC J JI Mar. Technol. Soc. J. PD SUM PY 1995 VL 29 IS 2 BP 3 EP 14 PG 12 WC Engineering, Ocean; Oceanography SC Engineering; Oceanography GA RR994 UT WOS:A1995RR99400001 ER PT J AU MCHUGH, GF AF MCHUGH, GF TI AN IMPROVED METHOD FOR MATCHING AND MERGING SHALLOW IN-SITU WITH DEEP-OCEAN CLIMATOLOGICAL TEMPERATURE PROFILES SO MARINE TECHNOLOGY SOCIETY JOURNAL LA English DT Article AB A viable surface-to-bottom temperature profile can be produced by use of a new method of matching and merging a deep-ocean climatological temperature profile with a shallow in situ bathythermograph (BT) profile. This new method provides a smoother transition of temperature gradient across the merge point without disturbing the in situ data. The more accurate match and the smoother merge may yield a significantly more accurate shape of the calculated sound speed profile around the merge point. (An example of the latter improvement is provided in the paper.) Although the described method primarily addresses temperature profiles, it is also applicable to the matching and merging of deep climatological/shallow in situ sound speed profiles. RP MCHUGH, GF (reprint author), USN,OCEANOG OFF,BAY ST LOUIS,MS 39529, USA. NR 2 TC 1 Z9 1 U1 0 U2 0 PU MARINE TECHNOLOGY SOC INC PI WASHINGTON PA 1828 L ST NW 9TH FLOOR, WASHINGTON, DC 20036 SN 0025-3324 J9 MAR TECHNOL SOC J JI Mar. Technol. Soc. J. PD SUM PY 1995 VL 29 IS 2 BP 32 EP 45 PG 14 WC Engineering, Ocean; Oceanography SC Engineering; Oceanography GA RR994 UT WOS:A1995RR99400004 ER PT J AU PEREPEZKO, JH BASSANI, MHD PARK, JS EDELSTEIN, AS EVERETT, RK AF PEREPEZKO, JH BASSANI, MHD PARK, JS EDELSTEIN, AS EVERETT, RK TI DIFFUSIONAL REACTIONS IN COMPOSITE SYNTHESIS SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING LA English DT Article; Proceedings Paper CT Workshop on In-Situ Processing of Composites CY JUN 07-09, 1994 CL WOODS HOLE, MA DE DIFFUSION; COMPOSITES; INTERFACES ID SOLID-STATE REACTION; DISPLACEMENT-REACTIONS; BRITTLE MATERIALS; PHASE; BINARY; NUCLEATION; SYSTEMS AB The thermal stability of advanced composites is dominated by the behavior of internal interfaces. In order to develop effective processing strategies and stable composite designs, it is essential to consider the relevant phase diagrams which are of ternary order or higher. In addition to phase diagram information, kinetic data such as the interdiffusion pathway and reaction rates are required to understand and control the possible interfacial chemical reactions. With this information, it may be possible to bias the reactions and to alter pathways. Often the initial nucleation stage of interfacial reactions has been neglected, but recent results indicate new kinetic behavior can develop during intermediate phase nucleation in a large concentration gradient. Multilayer thin film samples are well suited for probing the intital kinetic path and structural evolution during interdiffusion reaction and phase nucleation. In Al/Ni multilayer samples with compositional modulation wavelengths between 10 and 400 nm, thermal signal onsets due to phase nucleation have been examined to monitor the reaction kinetics and to probe the interdiffusion that precedes phase nucleation. The analysis of both bulk diffusion couple and multilayer sample behavior offers the basis for phase compatibility control that can be applied in developing stable composite structures by in situ reaction processing. C1 USN,RES LAB,COMPOSITES & CERAM BRANCH,WASHINGTON,DC 20375. RP PEREPEZKO, JH (reprint author), UNIV WISCONSIN,DEPT MAT SCI & ENGN,1509 UNIV AVE,MADISON,WI 53706, USA. OI Everett, Richard/0000-0002-6725-9442 NR 42 TC 40 Z9 40 U1 0 U2 8 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 JUN 1 PY 1995 VL 195 IS 1-2 BP 1 EP 11 DI 10.1016/0921-5093(94)06500-4 PG 11 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA RE426 UT WOS:A1995RE42600002 ER PT J AU EDELSTEIN, AS EVERETT, RK RICHARDSON, GR QADRI, SB FOLEY, JC PEREPEZKO, JH AF EDELSTEIN, AS EVERETT, RK RICHARDSON, GR QADRI, SB FOLEY, JC PEREPEZKO, JH TI REACTION-KINETICS AND BIASING IN AL/NI MULTILAYERS SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING LA English DT Article; Proceedings Paper CT Workshop on In-Situ Processing of Composites CY JUN 07-09, 1994 CL WOODS HOLE, MA DE ALUMINUM; NICKEL; MULTILAYERS; REACTION KINETICS ID PHASE FORMATION; NUCLEATION; SYSTEM AB The phase evolution from annealing ion-beam-sputtered Al/Ni multilayers was studied using X-ray diffraction and differential scanning calorimetry measurements. The sequence of phase formation depends on the modulation wavelength Lambda and the average composition (c). The initial phase formed may also depend on the composition gradient. Annealing short ii samples with a composition of either Al0.40Ni0.60 or Al0.75Ni0.25 produced only AlNi or Al3Ni, i.e. the stable phase with the same (c). At intermediate Lambda, Al3Ni2 was often the initial phase formed. Experiments were performed on multilayer samples in which 20 nm AlNi layers, denoted as biasing layers, were placed between each Al and Ni layer. The AlNi modified the kinetics, increasing the nucleation temperatures and changing the amounts of the product phases. The AlNi layer appears to dissociate in the later stages of annealing. Composition gradients and biasing layers may be used to control the phases present in technological materials. C1 UNIV WISCONSIN,DEPT MAT SCI & ENGN,MADISON,WI 53706. RP EDELSTEIN, AS (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. OI Everett, Richard/0000-0002-6725-9442 NR 18 TC 37 Z9 38 U1 0 U2 10 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 JUN 1 PY 1995 VL 195 IS 1-2 BP 13 EP 19 DI 10.1016/0921-5093(94)06501-2 PG 7 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA RE426 UT WOS:A1995RE42600003 ER PT J AU KELLER, CM CABOT, AV FLURY, BG AF KELLER, CM CABOT, AV FLURY, BG TI 2 ALGORITHMS FOR GLOBAL OPTIMIZATION SO MATHEMATICAL AND COMPUTER MODELLING LA English DT Article DE GLOBAL OPTIMIZATION; STOCHASTIC OPTIMIZATION; MIXTURES OF DISTRIBUTIONS; CLUSTER ANALYSIS AB In this paper, we develop and compare two methods for solving the problem of determining the global maximum of a function over a feasible set. The two methods begin with a random sample of points over the feasible set. Both methods then seek to combine these points into ''regions of attraction'' which represent subsets of the points which will yield the same local maximums when an optimization procedure is applied to points in the subset. The first method for constructing regions of attraction is based on approximating the function by a mixture of normal distributions over the feasible region and the second involves attempts to apply cluster analysis to form regions of attraction. The two methods are then compared on a set of well-known test problems. C1 INDIANA UNIV,SCH BUSINESS,DEPT DIS,BLOOMINGTON,IN 47405. INDIANA UNIV,DEPT MATH,BLOOMINGTON,IN 47405. RP KELLER, CM (reprint author), USN,POSTGRAD SCH,INST DEF RESOURCES MANAGEMENT,CODE 64KE,MONTEREY,CA 93943, USA. NR 12 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 0895-7177 J9 MATH COMPUT MODEL JI Math. Comput. Model. PD JUN PY 1995 VL 21 IS 12 BP 47 EP 59 DI 10.1016/0895-7177(95)00091-F PG 13 WC Computer Science, Interdisciplinary Applications; Computer Science, Software Engineering; Mathematics, Applied SC Computer Science; Mathematics GA RG987 UT WOS:A1995RG98700006 ER PT J AU PAZIRANDEH, M DESCHAMPS, J BARAL, S OWLETT, R AGGERWAL, A CAMPBELL, JR AF PAZIRANDEH, M DESCHAMPS, J BARAL, S OWLETT, R AGGERWAL, A CAMPBELL, JR TI RHAPIDOSOMES FROM AQUASPIRILLUM-ITERSONII - DISRUPTION AND SUBSEQUENT RENATURATION AND CHARACTERIZATION OF THE COMPONENT PROTEINS SO MICROBIOLOGY-UK LA English DT Article DE AQUASPIRILLUM ITERSONII; RHAPIDOSOMES; PROTEIN SELF-ASSEMBLY; BIOMATERIALS ID LAYER AB Rhapidosomes, tubular proteinaceous microstructures found in a variety of bacteria and algae, are resistant to disruption by many denaturing agents. They have potential application as a biomaterial and may also serve as a model for the study of self-assembly. Several reagents were tested for their ability to disrupt rhapidosomes isolated from Aquaspirillum itersonii into their component proteins. Only treatments with 0.1 M hydrochloric acid and 6 M guanidinium hydrochloride were found to disrupt rhapidosomes. A protocol was developed to renature the disrupted component proteins using rapid dilution and subsequent dialysis of the residual guanidinium hydrochloride. The renatured proteins were shown to have secondary structure as determined by circular dichroism. Furthermore, upon renaturation the two component proteins interacted with each other to form a complex of molecular mass > 2500 kDa. This complex, which may be a precursor in the pathway to rhapidosome formation, is currently being used to study the self-assembly process of these unique structures in vitro. C1 USN,RES LAB,STRUCT MATTER LAB,WASHINGTON,DC 20375. GEOCENTERS INC,FT WASHINGTON,MD 20744. RP PAZIRANDEH, M (reprint author), USN,RES LAB,CTR BIOMOLEC SCI & ENGN,WASHINGTON,DC 20375, USA. OI Deschamps, Jeffrey/0000-0001-5845-0010 NR 13 TC 0 Z9 0 U1 0 U2 0 PU SOC GENERAL MICROBIOLOGY PI READING PA HARVEST HOUSE 62 LONDON ROAD, READING, BERKS, ENGLAND RG1 5AS SN 1350-0872 J9 MICROBIOL-UK JI Microbiol.-UK PD JUN PY 1995 VL 141 BP 1419 EP 1423 PN 6 PG 5 WC Microbiology SC Microbiology GA RE704 UT WOS:A1995RE70400018 ER PT J AU STAHLBUSH, RE CARTIER, E BUCHANAN, DA AF STAHLBUSH, RE CARTIER, E BUCHANAN, DA TI ANOMALOUS POSITIVE CHARGE FORMATION BY ATOMIC-HYDROGEN EXPOSURE SO MICROELECTRONIC ENGINEERING LA English DT Article; Proceedings Paper CT 9th Biennial Conference on Insulating Films on Semiconductors (INFOS 95) CY JUN 07-10, 1995 CL VILLARD DE LANS, FRANCE SP Barclays Bank, Ctr Natl Etude Telecommun, CNRS, European Union, Inst Natl Polytech Grenoble, Minist Enseignement Super & Rech, Philips Composants, Schneider Elect, SGS Thomson, SOITEC, IEEE, Electron Devices Soc AB The formation of anomalous positive charge (APC) near the Si/SiO2 interface by atomic hydrogen exposure at room temperature has been studied. The APC exhibits a range of charging/discharging times from fractions of a second to hours. Room temperature annealing of the APC is observed and cycling its charge state makes the annealing significantly more rapid. The charge state of APC is driven by the silicon surface potential but not by the oxide field. RP STAHLBUSH, RE (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 0 TC 37 Z9 37 U1 1 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0167-9317 J9 MICROELECTRON ENG JI Microelectron. Eng. PD JUN PY 1995 VL 28 IS 1-4 BP 15 EP 18 DI 10.1016/0167-9317(95)00006-T PG 4 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Optics; Physics, Applied SC Engineering; Science & Technology - Other Topics; Optics; Physics GA RD492 UT WOS:A1995RD49200004 ER PT J AU SAKS, NS BATRA, S MANNING, M AF SAKS, NS BATRA, S MANNING, M TI CHARGE-PUMPING IN THIN-FILM TRANSISTORS SO MICROELECTRONIC ENGINEERING LA English DT Article; Proceedings Paper CT 9th Biennial Conference on Insulating Films on Semiconductors (INFOS 95) CY JUN 07-10, 1995 CL VILLARD DE LANS, FRANCE SP Barclays Bank, Ctr Natl Etude Telecommun, CNRS, European Union, Inst Natl Polytech Grenoble, Minist Enseignement Super & Rech, Philips Composants, Schneider Elect, SGS Thomson, SOITEC, IEEE, Electron Devices Soc AB Charge pumping (CP) has been used to study defects in p-channel poly-crystalline silicon thin film transistors (TFTs). At high frequencies (> similar to 1 kHz), we observe anomalous CP behavior in TFTs due to (a) the high resistivity of, and/or slow electron trapping in, the poly-Si channel and (b) the existence of a TFT drain offset region. At low frequencies, the CP technique still appears to provide a useful measure of the TFT grain boundary defect density. RP SAKS, NS (reprint author), USN,RES LAB,CODE 6813,WASHINGTON,DC 20375, USA. NR 0 TC 4 Z9 4 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0167-9317 J9 MICROELECTRON ENG JI Microelectron. Eng. PD JUN PY 1995 VL 28 IS 1-4 BP 379 EP 382 DI 10.1016/0167-9317(95)00080-R PG 4 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Optics; Physics, Applied SC Engineering; Science & Technology - Other Topics; Optics; Physics GA RD492 UT WOS:A1995RD49200078 ER PT J AU OLSON, PE BONE, WD LABARRE, RC MARTIN, CR UTZ, GC MILLER, LK GRESHAM, L AF OLSON, PE BONE, WD LABARRE, RC MARTIN, CR UTZ, GC MILLER, LK GRESHAM, L TI COCCIDIOIDOMYCOSIS IN CALIFORNIA - REGIONAL OUTBREAK, GLOBAL DIAGNOSTIC CHALLENGE SO MILITARY MEDICINE LA English DT Article AB Beginning in 1991, case reports of coccidioidomycosis in California increased dramatically, pursuant to a variety of natural and demographic factors, This highly infectious fungal disease with propensity to disseminate widely, mimic other conditions, and cause pathology at locations distant in place and time is readily treatable if recognized at an early stage, The concentration of military bases in endemic areas and the mobility of military personnel suggest a heightened potential for case presentations elsewhere and a need for elevated diagnostic suspicion on the part of military physicians worldwide, We review three cases of disseminated disease recently referred to our facility. RP OLSON, PE (reprint author), USN,MED CTR,DEPT CLIN INVEST,SAN DIEGO,CA 92134, USA. NR 0 TC 11 Z9 11 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 1995 VL 160 IS 6 BP 304 EP 308 PG 5 WC Medicine, General & Internal SC General & Internal Medicine GA RJ152 UT WOS:A1995RJ15200011 PM 7659230 ER PT J AU ALMEIDA, R GAVER, DP JACOBS, PA AF ALMEIDA, R GAVER, DP JACOBS, PA TI SIMPLE PROBABILITY-MODELS FOR ASSESSING THE VALUE OF INFORMATION IN DEFENSE AGAINST MISSILE ATTACK SO NAVAL RESEARCH LOGISTICS LA English DT Article ID SUM CONSTRAINT; SELECTION AB Suitable and timely information can enhance the effectiveness of a weapon system. This article presents simple models of an air defense situation that illustrates the expected payoff from a reduction in uncertainty by utilization of the products of sensor and C-3/I capabilities. Our model is of a single defensive unit (e.g., roughly resembling a Patriot battery) that assists in defending a high-value area against massed missile attack, perhaps by SCUD-like missiles. The defense engages each attacking missile in turn. The defense battery makes use of information available so as to plan the defensive resource allocation; application of that resource is possible only over a fixed known time interval. With minimal damage assessment available, termed INVISIBLE KILL, the defense allocates an equal time to each of a subset of all missiles so as to maximize the expected number killed; the size of the subset engaged depends upon the probability distribution of lethality time-the random time to kill an attacking missile acquired and engaged by the defense. If more information is available, that is, kills are observable, called VISIBLE KILL, the defense pursues a threshold policy: The time of engagement with a particular missile is limited (to tau); if kill is observed before tau defense attention switches (after a delay) to a new potential target. Suppose finally that still more information is available: The defense can order the lethality times in advance (this does not require that those times be actually known) and can also observe kills; call this COMPLETE INFORMATION. Then under some circumstances defense can prosecute substantially shorter time tasks first, crowding the majority of the kills into the earliest part of the window of opportunity of length T, leading to an advantage over the other policies. This capability is artificial, but the results supply an upper bound on defense capability as a function of the variability of lethality times. The above situations merely illustrate the impact of information in a time-constrained context. Numerous variations in the formulations are likely to be of interest, and of even more relevance. We hope that this article stimulates the analysis of a variety of such formulations. (C) 1995 John Wiley and Sons, Inc.* C1 USN,POSTGRAD SCH,MONTEREY,CA 93943. RP ALMEIDA, R (reprint author), PORTUGUESE NAVY,CTR INVEST ARMADA,LISBON,PORTUGAL. NR 10 TC 2 Z9 2 U1 2 U2 3 PU JOHN WILEY & SONS INC PI NEW YORK PA 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0894-069X J9 NAV RES LOG JI Nav. Res. Logist. PD JUN PY 1995 VL 42 IS 4 BP 535 EP 547 DI 10.1002/1520-6750(199506)42:4<535::AID-NAV3220420403>3.0.CO;2-6 PG 13 WC Operations Research & Management Science SC Operations Research & Management Science GA QT543 UT WOS:A1995QT54300001 ER PT J AU APPLEGET, JA AF APPLEGET, JA TI THE COMBAT SIMULATION OF DESERT-STORM WITH APPLICATIONS FOR CONTINGENCY OPERATIONS SO NAVAL RESEARCH LOGISTICS LA English DT Article AB Operation Desert Storm shattered the myth that the next war U.S. forces would light would be a European battle between NATO and the Warsaw Pact. The senior leadership of the Army, in conjunction with the National Command Authority, demanded insights from combat simulations to assist in war-planning and war-fighting efforts for Operation Desert Storm. This article describes how an existing theater-level simulation, the Concepts Evaluation Model, was used by analysts at the U.S. Army Concepts Analysis Agency (CAA) to simulate Desert Storm in support of those efforts, and details specific innovations that may have applications for future contingency operations. (C) 1995 John Wiley and Sons, Inc. RP APPLEGET, JA (reprint author), USN,POSTGRAD SCH,DEPT OPERAT RES,MONTEREY,CA 93943, USA. NR 6 TC 2 Z9 2 U1 0 U2 1 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 JUN PY 1995 VL 42 IS 4 BP 691 EP 713 DI 10.1002/1520-6750(199506)42:4<691::AID-NAV3220420411>3.0.CO;2-X PG 23 WC Operations Research & Management Science SC Operations Research & Management Science GA QT543 UT WOS:A1995QT54300009 ER PT J AU MAGANN, EF MARTIN, JN AF MAGANN, EF MARTIN, JN TI COMPLICATED POSTPARTUM PREECLAMPSIA ECLAMPSIA SO OBSTETRICS AND GYNECOLOGY CLINICS OF NORTH AMERICA LA English DT Article ID HELLP-SYNDROME; MATERNAL MORTALITY; PLASMA-EXCHANGE; PREGNANCY; NIFEDIPINE; RECOVERY; PERIOD AB The continuance of preeclampsia-eclampsia for more than 24 to 48 hours into the postpartum period is rare. Maternal morbidity and mortality is increased in women who persist in their disease and do not rapidly resolve their hypertension, decreased urinary output, depressed platelet count, and other related abnormalities within 72 to 96 hours postpartum. Clinical management of these patients demands continuous antepartum and postpartum reassessment so that increased maternal and perinatal morbidity and mortality can be minimized. C1 UNIV MISSISSIPPI,MED CTR,DEPT OBSTET & GYNECOL,DIV MATERNAL FETAL MED,JACKSON,MS 39216. USN,MED CTR,DEPT MATERNAL FETAL MED,SAN DIEGO,CA 92152. NR 35 TC 14 Z9 15 U1 0 U2 0 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0889-8545 J9 OBSTET GYN CLIN N AM JI Obstet. Gynecol. Clin. N. Am. PD JUN PY 1995 VL 22 IS 2 BP 337 EP 356 PG 20 WC Obstetrics & Gynecology SC Obstetrics & Gynecology GA RB285 UT WOS:A1995RB28500011 PM 7651675 ER PT J AU GOLDBERG, L BURNS, WK MCELHANON, RW AF GOLDBERG, L BURNS, WK MCELHANON, RW TI DIFFERENCE-FREQUENCY-GENERATION OF TUNABLE MIDINFRARED RADIATION IN BULK PERIODICALLY POLED LINBO3 SO OPTICS LETTERS LA English DT Article ID AGGAS2 AB A bulk, quasi-periodic phase-matched difference-frequency process is demonstrated in field-poled LiNbO3. Continuous tunability of output radiation in the 3.0-4.1-mu m wavelength range is achieved through grating rotation. A maximum mid-infrared output power of 0.5 mW is measured. C1 MARYLAND ADV DEV LAB,GREENBELT,MD 20770. RP GOLDBERG, L (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 12 TC 49 Z9 51 U1 0 U2 6 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0146-9592 J9 OPT LETT JI Opt. Lett. PD JUN 1 PY 1995 VL 20 IS 11 BP 1280 EP 1282 DI 10.1364/OL.20.001280 PG 3 WC Optics SC Optics GA RB330 UT WOS:A1995RB33000021 PM 19859499 ER PT J AU POSTMA, GN CHOLE, RA NEMZEK, WR AF POSTMA, GN CHOLE, RA NEMZEK, WR TI REVERSIBLE BLINDNESS SECONDARY TO ACUTE SPHENOID SINUSITIS SO OTOLARYNGOLOGY-HEAD AND NECK SURGERY LA English DT Note ID VISUAL-LOSS; COMPLICATIONS C1 UNIV CALIF DAVIS,DEPT OTOLARYNGOL HEAD & NECK SURG,SACRAMENTO,CA 95817. UNIV CALIF DAVIS,DEPT RADIOL,SACRAMENTO,CA 95817. RP POSTMA, GN (reprint author), USN,MED CTR,DEPT OTOLARYNGOL HEAD & NECK SURG,PORTSMOUTH,VA 23708, USA. NR 15 TC 21 Z9 23 U1 1 U2 2 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0194-5998 J9 OTOLARYNG HEAD NECK JI Otolaryngol. Head Neck Surg. PD JUN PY 1995 VL 112 IS 6 BP 742 EP 746 DI 10.1016/S0194-5998(95)70186-9 PG 5 WC Otorhinolaryngology; Surgery SC Otorhinolaryngology; Surgery GA RD374 UT WOS:A1995RD37400017 PM 7777362 ER PT J AU OBRIEN, F AF OBRIEN, F TI AN EXTENSION OF THE MOI FORMULA SO PERCEPTUAL AND MOTOR SKILLS LA English DT Article AB The application of the Moi Formula is extended to cover integrable odd and even functions on (-infinity, +infinity). RP OBRIEN, F (reprint author), USN,CTR UNDERSEA WARFARE DIV,1176 HOWELL ST,NEWPORT,RI 02841, USA. NR 2 TC 0 Z9 0 U1 0 U2 0 PU PERCEPTUAL MOTOR SKILLS PI MISSOULA PA PO BOX 9229, MISSOULA, MT 59807 SN 0031-5125 J9 PERCEPT MOTOR SKILL JI Percept. Mot. Skills PD JUN PY 1995 VL 80 IS 3 BP 1057 EP 1058 PN 1 PG 2 WC Psychology, Experimental SC Psychology GA RG588 UT WOS:A1995RG58800051 ER PT J AU OBRIEN, F HAMMEL, SE NGUYEN, CT AF OBRIEN, F HAMMEL, SE NGUYEN, CT TI A METHOD OF MOMENTS FOR EXPONENTIALS SO PERCEPTUAL AND MOTOR SKILLS LA English DT Article AB A methodological investigation is reported summarizing a substitution method for deriving probability density functions and moments for a class of exponential functions that could be useful to researchers in a variety of disciplines. RP OBRIEN, F (reprint author), USN,DIV UNDERSEA WARFARE CTR,CODE 2211,B 1171-1,1176 HOWELL ST,NEWPORT,RI 02841, USA. NR 3 TC 0 Z9 0 U1 0 U2 0 PU PERCEPTUAL MOTOR SKILLS PI MISSOULA PA PO BOX 9229, MISSOULA, MT 59807 SN 0031-5125 J9 PERCEPT MOTOR SKILL JI Percept. Mot. Skills PD JUN PY 1995 VL 80 IS 3 BP 1102 EP 1102 PN 2 PG 1 WC Psychology, Experimental SC Psychology GA RN835 UT WOS:A1995RN83500008 ER PT J AU OBRIEN, F AF OBRIEN, F TI COMPUTATIONAL FORM OF A GENERAL EXPONENTIAL INTEGRAL FORMULA SO PERCEPTUAL AND MOTOR SKILLS LA English DT Article AB For a recently derived general exponential formula the computational form of the expansion suitable for machine computation is given. RP OBRIEN, F (reprint author), USN,DIV UNDERSEA WARFARE CTR,1176 HOWELL ST,NEWPORT,RI 02841, USA. NR 2 TC 0 Z9 0 U1 0 U2 0 PU PERCEPTUAL MOTOR SKILLS PI MISSOULA PA PO BOX 9229, MISSOULA, MT 59807 SN 0031-5125 J9 PERCEPT MOTOR SKILL JI Percept. Mot. Skills PD JUN PY 1995 VL 80 IS 3 BP 1170 EP 1170 PN 2 PG 1 WC Psychology, Experimental SC Psychology GA RN835 UT WOS:A1995RN83500024 ER PT J AU OBRIEN, F AF OBRIEN, F TI THE POISSON 2-SPACE BOX-COUNTING METHOD REVISITED SO PERCEPTUAL AND MOTOR SKILLS LA English DT Article AB The author's box-counting method for assessing stochastic randomness, in two-dimensional space can be enhanced when the area oi residence is a square figure. A large improvement in the detection probability can be realized under the modification proposed even for very small populations. RP OBRIEN, F (reprint author), USN,DIV UNDERSEA WARFARE CTR,1176 HOWELL ST,CODE 2211,B 1171-1,NEWPORT,RI 02841, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU PERCEPTUAL MOTOR SKILLS PI MISSOULA PA PO BOX 9229, MISSOULA, MT 59807 SN 0031-5125 J9 PERCEPT MOTOR SKILL JI Percept. Mot. Skills PD JUN PY 1995 VL 80 IS 3 BP 1318 EP 1318 PN 2 PG 1 WC Psychology, Experimental SC Psychology GA RN835 UT WOS:A1995RN83500046 ER PT J AU MERRILL, LL MCGUIGAN, FJ KOBUS, DA AF MERRILL, LL MCGUIGAN, FJ KOBUS, DA TI AN AUDITORY EVENT-RELATED POTENTIAL EVALUATION OF SONAR TASK EXPERIENCE AND AGE SO PERCEPTUAL AND MOTOR SKILLS LA English DT Article ID SCALP TOPOGRAPHY; EVOKED-POTENTIALS; P300 AMPLITUDE; STIMULI; COMPONENTS; SEARCH AB To gauge the interaction of real-world sonar-task experience and age on brain electrical activity, the effect of sonar experience and age on event related potentials (ERP) was examined. A three-group design was used and the results suggest that sonar experience and age affect the amplitude and distribution of the ERP component. The results concerning age and ERPs support and extend the results of previous studies and suggest that age-related differences occur at a much younger age than is reported elsewhere. Attentional and stimulus evaluation processes which have been linked to parameters of the ERP component may be enhanced with real-world auditory task experience. Research on ERP should control for the possible confounds of auditory-task experience and age. C1 CENT MISSOURI STATE UNIV,WARRENSBURG,MO 64093. US INT UNIV,SAN DIEGO,CA 92131. RP MERRILL, LL (reprint author), USN,HLTH RES CTR,POB 85122,SAN DIEGO,CA 92186, USA. NR 34 TC 1 Z9 1 U1 0 U2 0 PU PERCEPTUAL MOTOR SKILLS PI MISSOULA PA PO BOX 9229, MISSOULA, MT 59807 SN 0031-5125 J9 PERCEPT MOTOR SKILL JI Percept. Mot. Skills PD JUN PY 1995 VL 80 IS 3 BP 1363 EP 1376 PN 2 PG 14 WC Psychology, Experimental SC Psychology GA RN835 UT WOS:A1995RN83500052 PM 7478898 ER PT J AU HENOCH, C STACE, J AF HENOCH, C STACE, J TI EXPERIMENTAL INVESTIGATION OF A SALT-WATER TURBULENT BOUNDARY-LAYER MODIFIED BY AN APPLIED STREAMWISE MAGNETOHYDRODYNAMIC BODY FORCE SO PHYSICS OF FLUIDS LA English DT Article RP HENOCH, C (reprint author), USN,CTR UNDERSEA WARFARE,HYDRODYNAM BRANCH,NEWPORT,RI 02841, USA. NR 25 TC 100 Z9 127 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 1070-6631 J9 PHYS FLUIDS JI Phys. Fluids PD JUN PY 1995 VL 7 IS 6 BP 1371 EP 1383 DI 10.1063/1.868525 PG 13 WC Mechanics; Physics, Fluids & Plasmas SC Mechanics; Physics GA RA446 UT WOS:A1995RA44600019 ER PT J AU GRINSTEIN, FF GUTMARK, E PARR, T AF GRINSTEIN, FF GUTMARK, E PARR, T TI NEAR-FIELD DYNAMICS OF SUBSONIC FREE SQUARE JETS - A COMPUTATIONAL AND EXPERIMENTAL-STUDY SO PHYSICS OF FLUIDS LA English DT Article ID NONCIRCULAR JETS C1 USN,CTR AIR WARFARE,PROPULS RES BRANCH,CHINA LAKE,CA 93555. RP GRINSTEIN, FF (reprint author), USN,RES LAB,COMPUTAT PHYS & FLUID DYNAM LAB,CODE 6410,WASHINGTON,DC 20375, USA. OI Gutmark, Ephraim/0000-0001-7816-4257 NR 19 TC 71 Z9 71 U1 0 U2 2 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 1070-6631 J9 PHYS FLUIDS JI Phys. Fluids PD JUN PY 1995 VL 7 IS 6 BP 1483 EP 1497 DI 10.1063/1.868534 PG 15 WC Mechanics; Physics, Fluids & Plasmas SC Mechanics; Physics GA RA446 UT WOS:A1995RA44600029 ER PT J AU DAHLBURG, JP FYFE, DE GARDNER, JH HAAN, SW BODNER, SE DOOLEN, GD AF DAHLBURG, JP FYFE, DE GARDNER, JH HAAN, SW BODNER, SE DOOLEN, GD TI 3-DIMENSIONAL MULTIMODE SIMULATIONS OF THE ABLATIVE RAYLEIGH-TAYLOR INSTABILITY SO PHYSICS OF PLASMAS LA English DT Article; Proceedings Paper CT 36th Annual Meeting of the Division-of-Plasma-Physics of the American-Physical-Society CY NOV 07-11, 1994 CL MINNEAPOLIS, MN SP Amer Phys Soc, Div Plasma Phys ID NUMERICAL-SIMULATION; TURBULENCE; FUSION; GROWTH C1 LAWRENCE LIVERMORE NATL LAB, LIVERMORE, CA 94550 USA. USN, RES LAB, DIV PLASMA PHYS, WASHINGTON, DC 20375 USA. LOS ALAMOS NATL LAB, LOS ALAMOS, NM 87545 USA. RP USN, RES LAB, LCP&FD, WASHINGTON, DC 20375 USA. NR 23 TC 32 Z9 34 U1 1 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 1070-664X EI 1089-7674 J9 PHYS PLASMAS JI Phys. Plasmas PD JUN PY 1995 VL 2 IS 6 BP 2453 EP 2459 DI 10.1063/1.871270 PN 2 PG 7 WC Physics, Fluids & Plasmas SC Physics GA RD262 UT WOS:A1995RD26200040 ER PT J AU HUBA, JD AF HUBA, JD TI HALL MAGNETOHYDRODYNAMICS IN-SPACE AND LABORATORY PLASMAS SO PHYSICS OF PLASMAS LA English DT Article; Proceedings Paper CT 36th Annual Meeting of the Division-of-Plasma-Physics of the American-Physical-Society CY NOV 07-11, 1994 CL MINNEAPOLIS, MN SP Amer Phys Soc, Div Plasma Phys ID LARGE-LARMOR-RADIUS; KELVIN-HELMHOLTZ INSTABILITY; MAGNETOTAIL BARIUM RELEASES; MAGNETIC-FIELD; OPENING SWITCH; PENETRATION; SIMULATION; SYSTEMS; CLOUDS; MODES RP HUBA, JD (reprint author), USN,RES LAB,DIV PLASMA PHYS,BEAM PHYS BRANCH,WASHINGTON,DC 20375, USA. NR 39 TC 63 Z9 65 U1 2 U2 11 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 1070-664X J9 PHYS PLASMAS JI Phys. Plasmas PD JUN PY 1995 VL 2 IS 6 BP 2504 EP 2513 DI 10.1063/1.871212 PN 2 PG 10 WC Physics, Fluids & Plasmas SC Physics GA RD262 UT WOS:A1995RD26200047 ER PT J AU KOEPKE, ME AMATUCCI, WE CARROLL, JJ GAVRISHCHAKA, V GANGULI, G AF KOEPKE, ME AMATUCCI, WE CARROLL, JJ GAVRISHCHAKA, V GANGULI, G TI VELOCITY-SHEAR-INDUCED ION-CYCLOTRON TURBULENCE - LABORATORY IDENTIFICATION AND SPACE APPLICATIONS SO PHYSICS OF PLASMAS LA English DT Article; Proceedings Paper CT 36th Annual Meeting of the Division-of-Plasma-Physics of the American-Physical-Society CY NOV 07-11, 1994 CL MINNEAPOLIS, MN SP Amer Phys Soc, Div Plasma Phys ID KELVIN-HELMHOLTZ INSTABILITY; ELECTRIC-FIELD; ELECTROSTATIC-WAVES; MAGNETIC-FIELD; PLASMA; TRANSVERSE; SIMULATION; DRIVEN C1 USN,RES LAB,DIV PLASMA PHYS,WASHINGTON,DC 20375. RP KOEPKE, ME (reprint author), W VIRGINIA UNIV,DEPT PHYS,MORGANTOWN,WV 26506, USA. NR 56 TC 32 Z9 32 U1 0 U2 5 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 1070-664X J9 PHYS PLASMAS JI Phys. Plasmas PD JUN PY 1995 VL 2 IS 6 BP 2523 EP 2531 DI 10.1063/1.871214 PN 2 PG 9 WC Physics, Fluids & Plasmas SC Physics GA RD262 UT WOS:A1995RD26200049 ER PT J AU MEGER, RA MATHEW, J GREGOR, JA PECHACEK, RE FERNSLER, RF MANHEIMER, W ROBSON, AE AF MEGER, RA MATHEW, J GREGOR, JA PECHACEK, RE FERNSLER, RF MANHEIMER, W ROBSON, AE TI EXPERIMENTAL INVESTIGATIONS OF THE FORMATION OF A PLASMA MIRROR FOR HIGH-FREQUENCY MICROWAVE BEAM-STEERING SO PHYSICS OF PLASMAS LA English DT Article; Proceedings Paper CT 36th Annual Meeting of the Division-of-Plasma-Physics of the American-Physical-Society CY NOV 07-11, 1994 CL MINNEAPOLIS, MN SP Amer Phys Soc, Div Plasma Phys RP MEGER, RA (reprint author), USN,RES LAB,DIV PLASMA PHYS,WASHINGTON,DC 20375, USA. NR 10 TC 27 Z9 28 U1 2 U2 3 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 1070-664X J9 PHYS PLASMAS JI Phys. Plasmas PD JUN PY 1995 VL 2 IS 6 BP 2532 EP 2538 DI 10.1063/1.871215 PN 2 PG 7 WC Physics, Fluids & Plasmas SC Physics GA RD262 UT WOS:A1995RD26200050 ER PT J AU WHITNEY, KG THORNHILL, JW APRUZESE, JP DAVIS, J DEENEY, C LEPELL, PD FAILOR, BH AF WHITNEY, KG THORNHILL, JW APRUZESE, JP DAVIS, J DEENEY, C LEPELL, PD FAILOR, BH TI OPTIMIZATION OF X-RAY-EMISSION IN Z-PINCH IMPLOSIONS - THEORY VERSUS EXPERIMENT SO PHYSICS OF PLASMAS LA English DT Article; Proceedings Paper CT 36th Annual Meeting of the Division-of-Plasma-Physics of the American-Physical-Society CY NOV 07-11, 1994 CL MINNEAPOLIS, MN SP Amer Phys Soc, Div Plasma Phys ID ARRAY IMPLOSIONS; ALUMINUM C1 PHYS INT CO,SAN LEANDRO,CA 94577. RP WHITNEY, KG (reprint author), USN,RES LAB,DIV PLASMA PHYS,RADIAT HYDRODYNAM BRANCH,WASHINGTON,DC 20375, USA. NR 16 TC 16 Z9 16 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 1070-664X J9 PHYS PLASMAS JI Phys. Plasmas PD JUN PY 1995 VL 2 IS 6 BP 2590 EP 2596 DI 10.1063/1.871221 PN 2 PG 7 WC Physics, Fluids & Plasmas SC Physics GA RD262 UT WOS:A1995RD26200057 ER PT J AU ZIMMERMAN, RC ALBERTE, RS AF ZIMMERMAN, RC ALBERTE, RS TI LIGHT AVAILABILITY, ROOT ANOXIA AND PATTERNS OF CARBON ALLOCATION IN THE MARINE ANGIOSPERM ZOSTERA-MARINA L (EELGRASS) SO PLANT PHYSIOLOGY LA English DT Meeting Abstract C1 OFF NAVAL RES,BIOL SCI TECH PROGRAM,ARLINGTON,VA 22217. UNIV CALIF LOS ANGELES,DEPT BIOL,LOS ANGELES,CA 90024. NR 0 TC 2 Z9 2 U1 0 U2 3 PU AMER SOC PLANT PHYSIOLOGISTS PI ROCKVILLE PA 15501 MONONA DRIVE, ROCKVILLE, MD 20855 SN 0032-0889 J9 PLANT PHYSIOL JI Plant Physiol. PD JUN PY 1995 VL 108 IS 2 SU S BP 24 EP 24 PG 1 WC Plant Sciences SC Plant Sciences GA RE289 UT WOS:A1995RE28900072 ER PT J AU GAO, Y SMITH, GJ ALBERTE, RS AF GAO, Y SMITH, GJ ALBERTE, RS TI INDUCTION OF NITRATE REDUCTASE-ACTIVITY BY LIGHT AND NO3 IN THE MARINE DIATOM SKELETONEMA-COSTATUM SO PLANT PHYSIOLOGY LA English DT Meeting Abstract C1 UNIV SO CALIF,DEPT BIOL SCI,LOS ANGELES,CA 90089. OFF NAVAL RES,ARLINGTON,VA 22217. NR 0 TC 1 Z9 1 U1 1 U2 3 PU AMER SOC PLANT PHYSIOLOGISTS PI ROCKVILLE PA 15501 MONONA DRIVE, ROCKVILLE, MD 20855 SN 0032-0889 J9 PLANT PHYSIOL JI Plant Physiol. PD JUN PY 1995 VL 108 IS 2 SU S BP 71 EP 71 PG 1 WC Plant Sciences SC Plant Sciences GA RE289 UT WOS:A1995RE28900356 ER PT J AU SMITH, CJ ALBERTE, RS AF SMITH, CJ ALBERTE, RS TI EXPRESSION OF HETEROLOGOUS GENES FOLLOWING ELECTROPORATION OF THE MARINE DIATOM SKELETONEMA-COSTATUM SO PLANT PHYSIOLOGY LA English DT Meeting Abstract C1 UNIV CALIF LOS ANGELES,DEPT BIOL,LOS ANGELES,CA 90024. OFF NAVAL RES,BIOL SCI TECH PROGRAM,ARLINGTON,VA 22217. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER SOC PLANT PHYSIOLOGISTS PI ROCKVILLE PA 15501 MONONA DRIVE, ROCKVILLE, MD 20855 SN 0032-0889 J9 PLANT PHYSIOL JI Plant Physiol. PD JUN PY 1995 VL 108 IS 2 SU S BP 152 EP 152 PG 1 WC Plant Sciences SC Plant Sciences GA RE289 UT WOS:A1995RE28900838 ER PT J AU STOCKTON, P AF STOCKTON, P TI BEYOND MICROMANAGEMENT - CONGRESSIONAL BUDGETING FOR A POST-COLD-WAR MILITARY SO POLITICAL SCIENCE QUARTERLY LA English DT Article ID DEPARTMENT-OF-DEFENSE; POLICY; OVERSIGHT RP STOCKTON, P (reprint author), USN,POSTGRAD SCH,CTR CIVIL MIL RELAT,WASHINGTON,DC 20350, USA. NR 51 TC 2 Z9 2 U1 0 U2 0 PU ACAD POLITICAL SCIENCE PI NEW YORK PA 475 RIVERSIDE DRIVE, SUITE 1274, NEW YORK, NY 10115-1274 SN 0032-3195 J9 POLIT SCI QUART JI Polit. Sci. Q. PD SUM PY 1995 VL 110 IS 2 BP 233 EP 259 DI 10.2307/2152361 PG 27 WC Political Science SC Government & Law GA RM930 UT WOS:A1995RM93000004 ER PT J AU COFFEY, CS DEVOST, VF AF COFFEY, CS DEVOST, VF TI IMPACT TESTING OF EXPLOSIVES AND PROPELLANTS SO PROPELLANTS EXPLOSIVES PYROTECHNICS LA English DT Article AB The drop weight impact test is the simplest and easiest test that can be performed on small quantities of explosives or propellants, and yet it has only a minimal role in assessing explosive sensitivity or performance. This paper examines the drop weight impact test as it is currently used, describes its major flaw, and suggests an alternative test that holds the promise of providing the impact energy required to ignite an energetic material. Other impact tests are described. One of these, the Ballistic Impact Chamber Test, measures the rate of reaction and extent of reaction during impact. This test demonstrates that during impact there are two forms of initiation reactions that occur, one that is very fast and is likely due to direct impact-shear initiation of the crystalline solids in the sample. The other, a much slower component, is thought to arise due to burning of the sample. RP COFFEY, CS (reprint author), USN,CTR SURFACE WARFARE,WHITE OAK LAB,SILVER SPRING,MD 20903, USA. NR 24 TC 29 Z9 29 U1 0 U2 5 PU VCH PUBLISHERS INC PI DEERFIELD BEACH PA 303 NW 12TH AVE, DEERFIELD BEACH, FL 33442-1788 SN 0721-3115 J9 PROPELL EXPLOS PYROT JI Propellants Explos. Pyrotech. PD JUN PY 1995 VL 20 IS 3 BP 105 EP 115 DI 10.1002/prep.19950200302 PG 11 WC Chemistry, Applied; Engineering, Chemical SC Chemistry; Engineering GA RK766 UT WOS:A1995RK76600001 ER PT J AU KAUFMAN, JW HAMILTON, R DEJNEKA, KY ASKEW, GK AF KAUFMAN, JW HAMILTON, R DEJNEKA, KY ASKEW, GK TI COMPARATIVE EFFECTIVENESS OF HYPOTHERMIA REWARMING TECHNIQUES - RADIO-FREQUENCY ENERGY VS WARM WATER SO RESUSCITATION LA English DT Article DE COLD; THERMAL; COLD WATER; HUMAN EXPOSURE; SURVIVAL; ELECTROMAGNETIC RADIATION AB The purpose of this study was to compare the rewarming effectiveness of a radio frequency coil (13.56 MHz) at a specific absorption rate (SAR) of 2.5 W/kg (RF) with warm water immersion (40 degrees C) (WW) and an insulated mummy-type insulating sack (IS) under simulated field conditions. Four male subjects, ages 24-35, were immersed in 10 degrees C water for up to 90 min or until their rectal temperatures (T-re) decreased to 35 degrees C. Each subject had 3 trials in which they were immersed. After each immersion, rewarming was accomplished with either RF, WW, or IS, so that each subject was rewarmed once with each method. Comparisons of the 3 rewarming methods were based on the rate of increase of T-re during rewarming (T-re/t), T-re 60 min after the start of rewarming (T-re60), the time-interval measured from extraction from the water to the end of afterdrop (t(ad)), and the magnitude of any observed T-re afterdrop (T-ad) WW had significantly greater T-re/t and T-re60 than either RF or IS (P < 0.03) and a smaller t(ad) than IS (P < 0.05). IS had significantly greater T-ad than either WW or RF (P < 0.05). No significant differences in T-re/t, T-re60, or t(ad) were observed between IS and RF. The results of this study indicate that for mildly hypothermic individuals, active rewarming with RF at a SAR of 2.5 W/kg is less effective than WW and roughly equivalent to passive rewarming with IS. RP KAUFMAN, JW (reprint author), USN,CTR AIR DEV,DIV AIRCRAFT,ENVIRONM EFFECTS BRANCH,CODE 6023,WARMINSTER,PA 18974, USA. NR 0 TC 2 Z9 2 U1 0 U2 1 PU ELSEVIER SCI PUBL IRELAND LTD PI CLARE PA CUSTOMER RELATIONS MANAGER, BAY 15, SHANNON INDUSTRIAL ESTATE CO, CLARE, IRELAND SN 0300-9572 J9 RESUSCITATION JI Resuscitation PD JUN PY 1995 VL 29 IS 3 BP 203 EP 214 DI 10.1016/0300-9572(94)00845-7 PG 12 WC Critical Care Medicine; Emergency Medicine SC General & Internal Medicine; Emergency Medicine GA RE685 UT WOS:A1995RE68500003 PM 7667550 ER PT J AU FRIEDMAN, M SERLIN, V AF FRIEDMAN, M SERLIN, V TI GENERATION OF A LARGE-DIAMETER INTENSE RELATIVISTIC ELECTRON-BEAM FOR THE TRIAXIAL RELATIVISTIC KLYSTRON AMPLIFIER SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article ID MODULATION RP FRIEDMAN, M (reprint author), USN,RES LAB,DIV PLASMA PHYS,WASHINGTON,DC 20375, USA. NR 7 TC 5 Z9 5 U1 1 U2 2 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 1995 VL 66 IS 6 BP 3488 EP 3493 DI 10.1063/1.1145459 PG 6 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA RD219 UT WOS:A1995RD21900014 ER PT J AU TOOMA, SG RICHARDSON, MD AF TOOMA, SG RICHARDSON, MD TI THE KEY-WEST CAMPAIGN SO SEA TECHNOLOGY LA English DT Article C1 USN,COASTAL BENTH BOUNDARY LAYER PROGRAM,GEOACOUST & GEOTECH SECT,BAY ST LOUIS,MS. RP TOOMA, SG (reprint author), USN,RES LAB,SEAFLOOR GEOSCI BRANCH,BAY ST LOUIS,MS, USA. NR 0 TC 4 Z9 4 U1 0 U2 0 PU COMPASS PUBL INC PI ARLINGTON PA SUITE 1000 1117 N 19 ST, ARLINGTON, VA 22209 SN 0093-3651 J9 SEA TECHNOL JI Sea Technol. PD JUN PY 1995 VL 36 IS 6 BP 17 EP 25 PG 9 WC Engineering, Ocean SC Engineering GA RE910 UT WOS:A1995RE91000003 ER PT J AU ROLLAND, DE DEMAS, TA KUKURA, JP AF ROLLAND, DE DEMAS, TA KUKURA, JP TI OCEANOGRAPHIC R/VS FOR THE 21ST-CENTURY SO SEA TECHNOLOGY LA English DT Article C1 USN SEA SYST COMMAND,WASHINGTON,DC 20362. RP ROLLAND, DE (reprint author), JOHN J MCMULLEN ASSOCIATES INC,OCEANOG & SURVEY SHIPS,ARLINGTON,VA, USA. RI Wright, Dawn/A-4518-2011 OI Wright, Dawn/0000-0002-2997-7611 NR 0 TC 0 Z9 0 U1 0 U2 0 PU COMPASS PUBL INC PI ARLINGTON PA SUITE 1000 1117 N 19 ST, ARLINGTON, VA 22209 SN 0093-3651 J9 SEA TECHNOL JI Sea Technol. PD JUN PY 1995 VL 36 IS 6 BP 34 EP & PG 0 WC Engineering, Ocean SC Engineering GA RE910 UT WOS:A1995RE91000005 ER PT J AU LEVINE, ER CONNORS, DN SHELL, R GAGLIARDI, T HANSON, R AF LEVINE, ER CONNORS, DN SHELL, R GAGLIARDI, T HANSON, R TI OCEANOGRAPHIC MAPPING WITH NAVY LARGE-DIAMETER UUV SO SEA TECHNOLOGY LA English DT Article C1 APPL SCI ASSOCIATES INC,NARRAGANSETT,RI. RP LEVINE, ER (reprint author), USN,UNDERSEA WARFARE CTR DIV,NEWPORT,RI 02840, USA. NR 6 TC 1 Z9 1 U1 0 U2 0 PU COMPASS PUBL INC PI ARLINGTON PA SUITE 1000 1117 N 19 ST, ARLINGTON, VA 22209 SN 0093-3651 J9 SEA TECHNOL JI Sea Technol. PD JUN PY 1995 VL 36 IS 6 BP 49 EP & PG 0 WC Engineering, Ocean SC Engineering GA RE910 UT WOS:A1995RE91000007 ER PT J AU WERNLI, RL AF WERNLI, RL TI OCEANS OF DREAMS SO SEA TECHNOLOGY LA English DT Editorial Material RP WERNLI, RL (reprint author), USN COMMAND,CTR CONTROL & OCEAN SURVEILLANCE,RDT&E DIV,SAN DIEGO,CA 92132, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU COMPASS PUBL INC PI ARLINGTON PA SUITE 1000 1117 N 19 ST, ARLINGTON, VA 22209 SN 0093-3651 J9 SEA TECHNOL JI Sea Technol. PD JUN PY 1995 VL 36 IS 6 BP 105 EP 105 PG 1 WC Engineering, Ocean SC Engineering GA RE910 UT WOS:A1995RE91000017 ER PT J AU JONES, DA SICHEL, M ORAN, ES AF JONES, DA SICHEL, M ORAN, ES TI REIGNITION OF DETONATIONS BY REFLECTED SHOCKS SO SHOCK WAVES LA English DT Article DE NUMERICAL SIMULATION; DETONATION REIGNITION; CELLULAR STRUCTURE; MACH REFLECTION; REACTION FRONT ID NUMERICAL SIMULATIONS AB Numerical simulations are used to study the diffraction, decay, and reignition that occurs when a detonation propagates past an increase in cross-sectional area in a rectangular tube. The computations solve the time-dependent two-dimensional equations describing a reactive flow in an argon-diluted stoichiometric hydrogen-oxygen mixture at atmospheric pressure. Previous studies have shown that soon after transmission to a larger area, the reaction front decouples from the leading shock and forms a decaying blast wave (''bubble'') in the larger tube. Then, depending on the initial conditions, the detonation either continues to decay or is reignited as the bubble reflects off confining surfaces. For a strongly overdriven initiating detonation, reignition occurs through an interaction between the bubble and the original contact surface. For a more weakly driven system, reignition can occur in two ways: either in the slip line and Mach stem of the Mach reflection formed when the bubble reflects off the bottom surface of the tube, or by multiple shock interactions that occur when the reflected bubble overtakes the initial detonation front. The computations show the evolution and development of the cellular structure of the steady detonation front. C1 UNIV MICHIGAN,DEPT AEROSP ENGN,ANN ARBOR,MI 48109. USN,RES LAB,COMPUTAT PHYS & FLUID DYNAM LAB,WASHINGTON,DC 20375. RP JONES, DA (reprint author), AERONAUT & MARITIME RES LAB,POB 4331,MELBOURNE,VIC 3001,AUSTRALIA. NR 12 TC 28 Z9 35 U1 0 U2 5 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0938-1287 J9 SHOCK WAVES JI Shock Waves PD JUN PY 1995 VL 5 IS 1-2 BP 47 EP 57 DI 10.1007/BF02425035 PG 11 WC Mechanics SC Mechanics GA RF864 UT WOS:A1995RF86400005 ER PT J AU LI, CP KAILASANATH, K ORAN, ES LANDSBERG, AM BORIS, JP AF LI, CP KAILASANATH, K ORAN, ES LANDSBERG, AM BORIS, JP TI DYNAMICS OF OBLIQUE DETONATIONS IN RAM ACCELERATORS SO SHOCK WAVES LA English DT Article DE DETONATION; RAM ACCELERATOR; SHOCK AB Time-accurate numerical simulations are used to study the dynamic development of oblique detonations on accelerating projectiles in ram accelerators. These simulations show that the oblique detonation can be stabilized on the projectile. The high pressure generated behind the detonation can result in accelerations up to 10(6)G and propel the projectile to velocities higher than 4.0 km/s. The detonation structure on the projectile is sensitive to the projectile geometry. A small change in the projectile shape is sufficient to alter the overall detonation structure and significantly affect the pressure distribution on the projectile. In order to maximize the thrust, an appropriate projectile shape has to be chosen to generate the detonation structure just behind the widest part of the projectile body. The projectile acceleration also has strong effects on the flow field and the detonation structure. During the acceleration, the location of the oblique detonation moves upstream from one reflected shock to another. However, once the detonation is stabilized behind the upstream shock, it remains at the new location until the transition to the next upstream shock occurs. In the simulations, the Non-Inertial-Source (NIS) technique was used to accurately represent of the projectile acceleration. Also, the Virtual-Cell-Embedding (VCE) method was employed to efficiently treat the complex projectile geometry on cartesian grids. RP LI, CP (reprint author), USN,RES LAB,COMPUTAT PHYS & FLUID DYNAM LAB,WASHINGTON,DC 20375, USA. NR 14 TC 19 Z9 20 U1 0 U2 4 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0938-1287 J9 SHOCK WAVES JI Shock Waves PD JUN PY 1995 VL 5 IS 1-2 BP 97 EP 101 DI 10.1007/BF02425040 PG 5 WC Mechanics SC Mechanics GA RF864 UT WOS:A1995RF86400010 ER PT J AU BRIAN, J KISER, WR AF BRIAN, J KISER, WR TI FINGERSTICK GLUCOSE DETERMINATION AND CPR SO SOUTHERN MEDICAL JOURNAL LA English DT Letter RP BRIAN, J (reprint author), USN HOSP,DEPT FAMILY PRACTICE,2080 CHILD ST,JACKSONVILLE,FL 32214, USA. NR 1 TC 0 Z9 0 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 JUN PY 1995 VL 88 IS 6 BP 697 EP 697 DI 10.1097/00007611-199506000-00026 PG 1 WC Medicine, General & Internal SC General & Internal Medicine GA RC172 UT WOS:A1995RC17200027 PM 7777898 ER PT J AU MICHELSON, AD BARNARD, MR HECHTMAN, HB MACGREGOR, H CONNOLLY, RJ VALERI, CR AF MICHELSON, AD BARNARD, MR HECHTMAN, HB MACGREGOR, H CONNOLLY, RJ VALERI, CR TI CIRCULATING DEGRANULATED PLATELETS RAPIDLY LOSE SURFACE P-SELECTIN BUT CONTINUE TO CIRCULATE AND FUNCTION SO THROMBOSIS AND HAEMOSTASIS LA English DT Meeting Abstract C1 UNIV MASSACHUSETTS,SCH MED,DEPT PEDIAT,BOSTON,MA 02125. BOSTON UNIV,SCH MED,USN,BLOOD RES LAB,BOSTON,MA 02118. NR 0 TC 5 Z9 5 U1 0 U2 0 PU F K SCHATTAUER VERLAG GMBH PI STUTTGART PA P O BOX 10 45 45, LENZHALDE 3, D-70040 STUTTGART, GERMANY SN 0340-6245 J9 THROMB HAEMOSTASIS JI Thromb. Haemost. PD JUN PY 1995 VL 73 IS 6 BP 1000 EP 1000 PG 1 WC Hematology; Peripheral Vascular Disease SC Hematology; Cardiovascular System & Cardiology GA RP385 UT WOS:A1995RP38500385 ER PT J AU Wahl, KJ Singer, IL AF Wahl, K. J. Singer, I. L. TI Quantification of a lubricant transfer process that enhances the sliding life of a MoS2 coating SO TRIBOLOGY LETTERS LA English DT Article DE solid lubrication; molybdenum disulfide; material transfer; coatings; transfer film ID MOLYBDENUM-DISULFIDE; FILMS; WEAR; DEPOSITION; MECHANISMS; RESISTANT AB A lubricant transfer process that enhanced the wear life of a MoS2 coating has been identified and quantified. A steel ball sliding against a coated steel fiat in reciprocating motion produced reservoirs at the turnaround part of the track ends, then emptied them, to provide replenishment similar to what is expected of liquid lubricants. The dynamics of the process were inferred from measurements of material loss and/or buildup in the track and on the ball; measurements were performed with Michelson interferometry and energy dispersive X-ray spectroscopy. C1 [Wahl, K. J.; Singer, I. L.] USN, Res Lab, Washington, DC 20375 USA. RP Wahl, KJ (reprint author), USN, Res Lab, Code 6170, Washington, DC 20375 USA. OI Wahl, Kathryn/0000-0001-8163-6964 FU National Research Council through NRL/NRC FX The authors thank R.N. Bolster for coating deposition, L. E. Seitzman for valuable comments, and KJW thanks the National Research Council for support through a NRL/NRC post doctoral associateship. NR 23 TC 70 Z9 71 U1 1 U2 12 PU SPRINGER/PLENUM PUBLISHERS PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1023-8883 J9 TRIBOL LETT JI Tribol. Lett. PD JUN PY 1995 VL 1 IS 1 BP 59 EP 66 DI 10.1007/BF00157976 PG 8 WC Engineering, Chemical; Engineering, Mechanical SC Engineering GA V17RX UT WOS:000207955400009 ER PT J AU TURNER, DC CHANG, CY BRANDOW, SL MURPHY, DB GABER, BP AF TURNER, DC CHANG, CY BRANDOW, SL MURPHY, DB GABER, BP TI USE OF A REPOSITIONABLE SUBSTRATE TO ACQUIRE AND COMPARE DISTINCT ATOMIC-FORCE MICROSCOPE IMAGES OF A FIELD OF MICROTUBULES SO ULTRAMICROSCOPY LA English DT Article ID SCANNING TUNNELING MICROSCOPE; ELECTRON-MICROSCOPE; OPTICAL MICROSCOPE; TUBULIN; STM AB Many scanning probe microscope (SPM) experiments of interest require removing the sample from the scanning head of the SPM for processing or examination by other techniques and then replacing it in the SPM head and relocating the original sample area. For feature sizes below 1 mu m this is often a tedious, if not impossible, task. To resolve this problem we have designed a patterned substrate which can be used with any SPM to relocate sub-micrometer features even after removal, and subsequent replacement of the sample in the scanning head. The use of this device with an atomic force microscope (AFM) is demonstrated by imaging a field of chicken brain microtubules with several different AFM probes and scan modes. Contact, Tapping(TM), and error-signal mode AFM images were acquired using normal pyramidal tips and Park Scientific Ultralevers. Images of individual tubules were obtained with all three imaging modes, allowing direct comparison with respect to height, width and feature resolution. C1 GEORGE WASHINGTON UNIV,DEPT ELECT ENGN & COMP SCI,WASHINGTON,DC 20052. JOHNS HOPKINS UNIV,SCH MED,DEPT CELL BIOL,BALTIMORE,MD 21205. RP TURNER, DC (reprint author), USN,RES LAB,CTR BIOMOLEC SCI & ENGN,MOLEC INTERACT & INTERFACES LAB,CODE 6930,WASHINGTON,DC 20375, USA. NR 22 TC 5 Z9 7 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0304-3991 J9 ULTRAMICROSCOPY JI Ultramicroscopy PD JUN PY 1995 VL 58 IS 3-4 BP 425 EP 434 DI 10.1016/0304-3991(95)00009-P PG 10 WC Microscopy SC Microscopy GA RU587 UT WOS:A1995RU58700019 ER PT J AU DLUGOS, DJ PERROTTA, PL HORN, WG AF DLUGOS, DJ PERROTTA, PL HORN, WG TI EFFECTS OF THE SUBMARINE ENVIRONMENT ON RENAL-STONE RISK-FACTORS AND VITAMIN-D METABOLISM SO UNDERSEA & HYPERBARIC MEDICINE LA English DT Article DE KIDNEY CALCULI; VITAMIN-D-DEFICIENCY; SUBMARINE MEDICINE; SUNLIGHT; PARATHYROID HORMONE; OSTEOCALCIN ID SERUM CONCENTRATIONS; PARATHYROID-HORMONE; SEASONAL-VARIATIONS; CALCIUM-OXALATE; D DEFICIENCY; 1,25-DIHYDROXYVITAMIN-D; 25-HYDROXYVITAMIN-D; UROLITHIASIS; 25-HYDROXYCHOLECALCIFEROL; PEOPLE AB The effects of total sunlight deprivation on urinary risk factors for nephrolithiasis and vitamin D metabolism were studied in 20 healthy male subjects. Blood and 24-h urine samples were collected before submarine deployment and 68 days later while still at sea. No subject received sunlight exposure during the test interval. Significant decreases in daily urinary excretion of calcium, uric acid, sodium, sulfate, and phosphorus were found. The relative supersaturation ratio of monosodium urate also fell. There was no change in urinary citrate or urine volume. Mean serum levels of 25-hydroxyvitamin D [25(OH)D] declined from 31 to 19 pg/ml (P < 0.0001), parathyroid hormone increased from 22 to 30 pg/ml (P < 0.0001), and osteocalcin (GLA) increased from 2.7 to 3.3 ng/ml (P = 0.005). Mean serum levels of 1,25 dihydroxyvitamin D were unchanged. Four subjects had 25(OH)D levels below 10 ng/ml by the end of the submarine patrol. These findings suggest that exposure to the submarine environment produces physiologic changes that decrease the risk for renal stone formation. The data are consistent with the role of vitamin D metabolism in sunlight deprivation and demonstrate that compensatory mechanisms are well established within 68 days. C1 USN,SUBMARINE BASE,KINGS BAY,GA. RP DLUGOS, DJ (reprint author), USN,SUBMARINE MED RES LAB,GROTON,CT 06349, USA. NR 33 TC 27 Z9 29 U1 0 U2 3 PU UNDERSEA & HYPERBARIC MEDICAL SOC INC PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814 SN 1066-2936 J9 UNDERSEA HYPERBAR M JI Undersea Hyperb. Med. PD JUN PY 1995 VL 22 IS 2 BP 145 EP 152 PG 8 WC Marine & Freshwater Biology; Medicine, Research & Experimental SC Marine & Freshwater Biology; Research & Experimental Medicine GA RB193 UT WOS:A1995RB19300004 PM 7633276 ER PT J AU FLEMING, B AF FLEMING, B TI INTIMATIONS OF INDIA SO VIRGINIA QUARTERLY REVIEW LA English DT Article RP FLEMING, B (reprint author), USN ACAD,ANNAPOLIS,MD 21402, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU UNIV VIRGINIA PI CHARLOTTESVILLE PA 1 W RANGE, CHARLOTTESVILLE, VA 22903 SN 0042-675X J9 VA QUART REV JI VA. Q. Rev. PD SUM PY 1995 VL 71 IS 3 BP 393 EP 413 PG 21 WC Literary Reviews SC Literature GA RF639 UT WOS:A1995RF63900002 ER PT J AU PENG, MS CHEN, DS CHANG, SW CHANG, CP JENG, BF AF PENG, MS CHEN, DS CHANG, SW CHANG, CP JENG, BF TI IMPROVEMENT OF NUMERICAL PREDICTION OF TYPHOON TRACKS IN THE WESTERN NORTH PACIFIC BASIN NEAR TAIWAN SO WEATHER AND FORECASTING LA English DT Article ID TROPICAL CYCLONE MOTION; MODEL; ASYMMETRIES; INTENSITY; SCHEME; FLOW AB In an effort to improve the tropical cyclone track forecast, two preprocessing procedures are applied to an operational baroclinic forecast system at the Central Weather Bureau (CWB) in Taipei. The first replaces the environmental wind field near the storm by the previous 6-h movement vector of the storm. The second incorporates a wavenumber-1 asymmetry constructed by matching the flow at the center of the asymmetry with the previous 6-h storm movement. Applying both processes to the 32 typhoon cases archived at the CWB in 1990 reduces the averaged 48-h forecast distance error from 474 to 351 km. Multiexisting typhoons may have interactions among themselves that depend on relative intensity. Proper representation of the intensities in the initial bogus is important for the track forecast. Experiments with different initial bogus intensities are conducted on a case of dual typhoons-Nat and Mireille in 1991. The forecast using different bogus vortices according to the estimated intensities of each typhoon gives substantially smaller errors than that using identical bogus vortices. The impact of initial bogus vortex intensity on the track forecast for single typhoon cases is also illustrated. C1 CENT WEATHER BUR,TAIPEI,TAIWAN. USN,RES LAB,MONTEREY,CA. RP PENG, MS (reprint author), USN,POSTGRAD SCH,DEPT METEOROL,CODE MR PG,MONTEREY,CA 93943, USA. NR 15 TC 1 Z9 1 U1 1 U2 1 PU AMER METEOROLOGICAL SOC PI BOSTON PA 45 BEACON ST, BOSTON, MA 02108-3693 SN 0882-8156 J9 WEATHER FORECAST JI Weather Forecast. PD JUN PY 1995 VL 10 IS 2 BP 411 EP 424 DI 10.1175/1520-0434(1995)010<0411:IONPOT>2.0.CO;2 PG 14 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA RC824 UT WOS:A1995RC82400016 ER PT J AU HARVEY, DP SUDARSHAN, TS AF HARVEY, DP SUDARSHAN, TS TI EFFECT OF BETA-MN FORMATION ON THE IMPACT BEHAVIOR OF FE-29 MN-8 AL-1 C-1.5 SI ALLOY SO ZEITSCHRIFT FUR METALLKUNDE LA English DT Article ID AUSTENITIC STAINLESS-STEEL; CR-C ALLOYS; MECHANICAL-PROPERTIES; NACL SOLUTION; TEMPERATURE; OXIDATION; CHROMIUM; FATIGUE; ALUMINUM; TENSILE AB Charpy V-notched impact tests were conducted on Fe-29 Mn-8 Al-1.5 Si-1 C austenitic stainless steel over a range of temperatures (293 K to 77 K) on solution treated and aged specimens. The results of this study demonstrate that aging promotes multiple crack initiation, reduces the energy absorbed by the material and lowers the peak load sustained by the material. These observations may be rationalized by the formation of a brittle beta-Mn phase upon aging. The room temperature impact properties of the solution treated specimens are comparable with those of conventional Fe-Cr-Ni stainless steels. C1 MAT MODIFICAT INC,FAIRFAX,VA 22031. RP HARVEY, DP (reprint author), USN,RES LAB,MECH MAT BRANCH,WASHINGTON,DC 20375, USA. NR 55 TC 0 Z9 0 U1 0 U2 2 PU CARL HANSER VERLAG PI MUNICH PA KOLBERGERSTRASSE 22, POSTFACH 860420, W-8163 MUNICH, GERMANY SN 0044-3093 J9 Z METALLKD JI Z. Metallk. PD JUN PY 1995 VL 86 IS 6 BP 434 EP 440 PG 7 WC Metallurgy & Metallurgical Engineering SC Metallurgy & Metallurgical Engineering GA RH776 UT WOS:A1995RH77600010 ER PT J AU GLEMBOCKI, OJ TUCHMAN, JA KO, KK PANG, SW GIORDANA, A KAPLAN, R STUTZ, CE AF GLEMBOCKI, OJ TUCHMAN, JA KO, KK PANG, SW GIORDANA, A KAPLAN, R STUTZ, CE TI EFFECTS OF ELECTRON-CYCLOTRON-RESONANCE ETCHING ON THE AMBIENT (100) GAAS SURFACE SO APPLIED PHYSICS LETTERS LA English DT Article ID FERMI LEVEL; PHOTOREFLECTANCE; REGION; MODEL C1 UNIV MICHIGAN,ANN ARBOR,MI 48109. WRIGHT PATTERSON LABS,DAYTON,OH 45433. RP GLEMBOCKI, OJ (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. RI Pang, Stella/A-7770-2012 OI Pang, Stella/0000-0002-4330-0877 NR 14 TC 8 Z9 8 U1 0 U2 3 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD MAY 29 PY 1995 VL 66 IS 22 BP 3054 EP 3056 DI 10.1063/1.114275 PG 3 WC Physics, Applied SC Physics GA QZ888 UT WOS:A1995QZ88800044 ER PT J AU IN, V MAHAN, SE DITTO, WL SPANO, ML AF IN, V MAHAN, SE DITTO, WL SPANO, ML TI EXPERIMENTAL MAINTENANCE OF CHAOS SO PHYSICAL REVIEW LETTERS LA English DT Article ID SYSTEM C1 USN,CTR SURFACE WARFARE,DIV CARDEROCK,SILVER SPRING,MD 20903. RP IN, V (reprint author), GEORGIA INST TECHNOL,SCH PHYS,APPL CHAOS LAB,ATLANTA,GA 30332, USA. RI Spano, Mark/B-6883-2011; OI Ditto, William/0000-0002-7416-8012 NR 17 TC 54 Z9 54 U1 1 U2 2 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 MAY 29 PY 1995 VL 74 IS 22 BP 4420 EP 4423 DI 10.1103/PhysRevLett.74.4420 PG 4 WC Physics, Multidisciplinary SC Physics GA QZ970 UT WOS:A1995QZ97000016 ER PT J AU SWAMINATHAN, RP WAGNER, DK AF SWAMINATHAN, RP WAGNER, DK TI THE ARBORESCENCE-REALIZATION PROBLEM SO DISCRETE APPLIED MATHEMATICS LA English DT Article ID GRAPH AB A {0, 1}-matrix M is arborescence graphic if there exists an arborescence T such that the arcs of T are indexed on the rows of M and the columns of M are the incidence vectors of the are sets of dipaths of T. If such a T exists, then T is an arborescence realization for M. This paper presents an almost-linear-time algorithm to determine whether a given {0, 1}-matrix is arborescence graphic and, if so, to construct an arborescence realization. The algorithm is then applied to recognize a subclass of the extended-Horn satisfiability problems introduced by Chandru and Hooker (1991). C1 OFF NAVAL RES, DIV MATH SCI, ARLINGTON, VA 22217 USA. RP UNIV CINCINNATI, DEPT COMP SCI, CINCINNATI, OH 45221 USA. NR 21 TC 9 Z9 9 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0166-218X EI 1872-6771 J9 DISCRETE APPL MATH JI Discret Appl. Math. PD MAY 26 PY 1995 VL 59 IS 3 BP 267 EP 283 DI 10.1016/0166-218X(93)E0170-4 PG 17 WC Mathematics, Applied SC Mathematics GA RB214 UT WOS:A1995RB21400005 ER PT J AU DICK, SJ AF DICK, SJ TI THE NORTON HISTORY OF ASTRONOMY AND COSMOLOGY - NORTH,J SO SCIENCE LA English DT Book Review RP DICK, SJ (reprint author), USN OBSERV,WASHINGTON,DC 20392, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU AMER ASSOC ADVAN SCIENCE PI WASHINGTON PA 1333 H ST NW, WASHINGTON, DC 20005 SN 0036-8075 J9 SCIENCE JI Science PD MAY 26 PY 1995 VL 268 IS 5214 BP 1214 EP 1215 DI 10.1126/science.268.5214.1214-a PG 2 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA RA604 UT WOS:A1995RA60400060 PM 17840646 ER PT J AU PUTNAM, MA ASKINS, CG WILLIAMS, GM FRIEBELE, EJ BASKANSKY, M REINTJES, J AF PUTNAM, MA ASKINS, CG WILLIAMS, GM FRIEBELE, EJ BASKANSKY, M REINTJES, J TI SINGLE-PULSE FABRICATION OF FIBER BRAGG GRATINGS USING A PHASE-CONJUGATED KRF EXCIMER-LASER SO ELECTRONICS LETTERS LA English DT Article DE EXCIMER LASERS; GRATINGS IN FIBERS; OPTICAL PHASE CONJUGATION AB A phase-conjugate mirror was used in the amplifier section of a KrF excimer laser to fabricate fibre Bragg gratings in singlemode Ge-doped silica core fibres with an uncompensated interferometer. Reflectivities as high as 26% and FWHM linewidths of 5.5GHz at 0.817 mu m were obtained in as-drawn fibre with a single pulse exposure. RP PUTNAM, MA (reprint author), USN,RES LAB,DIV OPT SCI,WASHINGTON,DC 20375, USA. NR 6 TC 4 Z9 4 U1 0 U2 1 PU IEE-INST ELEC ENG PI HERTS PA MICHAEL FARADAY HOUSE SIX HILLS WAY STEVENAGE, HERTS, ENGLAND SG1 2AY SN 0013-5194 J9 ELECTRON LETT JI Electron. Lett. PD MAY 25 PY 1995 VL 31 IS 11 BP 885 EP 886 DI 10.1049/el:19950594 PG 2 WC Engineering, Electrical & Electronic SC Engineering GA RC656 UT WOS:A1995RC65600033 ER PT J AU MARKOWITZ, MA PURANIK, DB SINGH, A AF MARKOWITZ, MA PURANIK, DB SINGH, A TI MONOLAYER STUDY OF MIXTURES OF DIACETYLENIC PHOSPHATIDYLCHOLINE AND PHOSPHOLIPIDS CONTAINING METAL-CHELATING IMINODIACETIC ACID HEADGROUP SO CHEMISTRY AND PHYSICS OF LIPIDS LA English DT Article DE METAL CHELATING PHOSPHOLIPID; LANGMUIR FILMS STUDIES; POLYMERIZABLE LIPIDS; DIACETYLENIC PHOSPHOLIPIDS; IMINODIACETIC ACID FUNCTIONALIZED PHOSPHOLIPIDS; PHOSPHOLIPID MONOLAYERS ID DOCOSYL SULFATE SYSTEM; 2-COMPONENT MONOLAYERS; MICRODOMAIN STRUCTURES; IMMOBILIZATION; ORGANIZATION; RECOGNITION; MISCIBILITY; METHYLATION; CHEMISTRY; MEMBRANES AB The mixing behavior of polymerizable diacetylenic phosphatidylcholine (1) with two diacetylenic phospholipids containing the iminodiacetic acid (IDA) functionality in the headgroup region was studied at the air-water interface. All three phospholipids contained tricosa-10,12-diynoyl acyl chains. In phospholipid 2, the choline group (-CH2-CH2-NMe(3)) was replaced by an -CH2-CH2-N-(CH2-COOH)(2) functionality. In phospholipid 3, the IDA unit was linked to the phosphate headgroup via a sulfonate linker, -CH2-CH2-OS(O-2)-O-CH2-CH2- Monolayers were prepared by mixing polymerizable 1,2 bis(tricosa-10,12-diynoyl)-sn-glycero-3-phosphocholine (1) with metal-chelating IDA phospholipids (2, 3) on a 10 mM CuCl2 subphase. Studies of monolayer properties of mixtures of 2 and 3 with 1 demonstrated that mixtures of 2 with 1 had better mixing behavior than mixtures of phospholipids 1 and 3. C1 USN,RES LAB,CTR BIOMOLEC SCI & ENGN,WASHINGTON,DC 20375. GEORGETOWN UNIV,WASHINGTON,DC 20007. NR 37 TC 6 Z9 6 U1 0 U2 0 PU ELSEVIER SCI PUBL IRELAND LTD PI CLARE PA CUSTOMER RELATIONS MANAGER, BAY 15, SHANNON INDUSTRIAL ESTATE CO, CLARE, IRELAND SN 0009-3084 J9 CHEM PHYS LIPIDS JI Chem. Phys. Lipids PD MAY 22 PY 1995 VL 76 IS 1 BP 63 EP 71 DI 10.1016/0009-3084(94)02430-D PG 9 WC Biochemistry & Molecular Biology; Biophysics SC Biochemistry & Molecular Biology; Biophysics GA RB656 UT WOS:A1995RB65600007 PM 7788800 ER PT J AU NGAI, KL ROLAND, CM AF NGAI, KL ROLAND, CM TI COMPONENT DYNAMICS IN POLYISOPRENE/POLY(VINYLETHYLENE) BLENDS SO MACROMOLECULES LA English DT Note ID SEGMENTAL RELAXATION; POLYMERS; MIXTURE; TIME RP NGAI, KL (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 17 TC 45 Z9 46 U1 2 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0024-9297 J9 MACROMOLECULES JI Macromolecules PD MAY 22 PY 1995 VL 28 IS 11 BP 4033 EP 4035 DI 10.1021/ma00115a042 PG 3 WC Polymer Science SC Polymer Science GA QZ934 UT WOS:A1995QZ93400042 ER PT J AU HEAGY, JF PECORA, LM CARROLL, TL AF HEAGY, JF PECORA, LM CARROLL, TL TI SHORT-WAVELENGTH BIFURCATIONS AND SIZE INSTABILITIES IN COUPLED OSCILLATOR-SYSTEMS SO PHYSICAL REVIEW LETTERS LA English DT Article ID CHAOTIC SYSTEMS RP HEAGY, JF (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. OI Carroll, Thomas/0000-0002-2371-2049 NR 19 TC 161 Z9 163 U1 1 U2 7 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 MAY 22 PY 1995 VL 74 IS 21 BP 4185 EP 4188 DI 10.1103/PhysRevLett.74.4185 PG 4 WC Physics, Multidisciplinary SC Physics GA QZ236 UT WOS:A1995QZ23600022 ER PT J AU LENTZ, WJ ATCHLEY, AA GAITAN, DF AF LENTZ, WJ ATCHLEY, AA GAITAN, DF TI MIE SCATTERING FROM A SONOLUMINESCING AIR BUBBLE IN WATER SO APPLIED OPTICS LA English DT Article DE SONOLUMINESCENCE; MIE THEORY; SCATTERING; BUBBLE; SIZING ID GAS-BUBBLE; DYNAMICS AB A single bubble of air in water can emit pulses of blue-white light that have durations of less than 50 ps while it is oscillating in an acoustic standing wave. The emission is called sonoluminescence. A knowledge of the bubble diameter throughout the cycle, and in particular near the time of sonoluminescence emission, can provide important information about the phenomenon. A new Mie scattering technique is developed to determine the size of the bubble through its expansion and collapse during the acoustic cycle. The technique does not rely on an independent means of calibration or on accurate measurements of the scattered intensity. RP LENTZ, WJ (reprint author), USN,POSTGRAD SCH,CODE PHLZ,833 DYER RD,MONTEREY,CA 93943, USA. RI GAITAN, DARIO/N-2727-2016 OI GAITAN, DARIO/0000-0002-2139-8535 NR 12 TC 30 Z9 37 U1 1 U2 3 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD MAY 20 PY 1995 VL 34 IS 15 BP 2648 EP 2654 PG 7 WC Optics SC Optics GA QZ042 UT WOS:A1995QZ04200007 PM 21052406 ER PT J AU TUCKER, JE MARQUARDT, CL BOWMAN, SR FELDMAN, BJ AF TUCKER, JE MARQUARDT, CL BOWMAN, SR FELDMAN, BJ TI TRANSIENT THERMAL LENS IN A ZNGEP2 CRYSTAL SO APPLIED OPTICS LA English DT Note ID LASER AB The first observations, to the authors' knowledge, of transient thermal lensing in a ZnGeP2 crystal achieved with 2.09-mu m laser excitation of 800-mu s, 70-mJ pulses at 30 Hz and by burst-made Q-switched pumping are presented.. The laser power transmitted through an aperture was approximated by an adiabatic model with currently accepted values for the thermal properties of ZnGeP2 and corresponded to focal-length changes from infinity to 10 cm during each 800-mu s pulse. Similar results were seen when the crystal was operated as an optical parametric oscillator. This transient thermal lens severely limits ZnGeP2 as a material for use in optical parametric oscillators for these modulated, high-power operating conditions. RP TUCKER, JE (reprint author), USN,RES LAB,LASER PHYS BRANCH,WASHINGTON,DC 20375, USA. NR 10 TC 10 Z9 10 U1 0 U2 5 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD MAY 20 PY 1995 VL 34 IS 15 BP 2678 EP 2682 PG 5 WC Optics SC Optics GA QZ042 UT WOS:A1995QZ04200012 PM 21052411 ER PT J AU JOHNSON, WN DERMER, CD KINZER, RL KURFESS, JD STRICKMAN, MS MCNARONBROWN, K JOURDAIN, E JUNG, GV GRABELSKY, DA PURCELL, WR ULMER, MP AF JOHNSON, WN DERMER, CD KINZER, RL KURFESS, JD STRICKMAN, MS MCNARONBROWN, K JOURDAIN, E JUNG, GV GRABELSKY, DA PURCELL, WR ULMER, MP TI OSSE OBSERVATIONS OF 3C-273 SO ASTROPHYSICAL JOURNAL LA English DT Article DE GAMMA RAYS, OBSERVATIONS; QUASARS, INDIVIDUAL (3C 273) ID ACTIVE GALACTIC NUCLEI; GAMMA-RAY EMISSION; COLD MATTER; COS-B; 3C-273; 3C273; GALAXIES; QUASARS; QUASAR-3C273; REFLECTION AB We report results of multiple observations of the quasar 3C 273 with the Oriented Scintillation Spectrometer Experiment (OSSE) instrument on the Compton Gamma Ray Observatory. These observations span the period from 1991 June through 1993 January and represent the most sensitive observations to date in low-energy gamma rays. The source was detected at historically weak 100 keV fluxes compared with previous measurements. Variability by factors of similar to 3 on timescales of approximate to 2 months was observed in the energy band 50-150 keV. The data are well described by a single power law with a photon number index Gamma = 1.7 +/- 0.1. No significant change of Gamma was observed during changes in intensity. Thermal models do not provide acceptable fits to the data. When the OSSE data are combined with contemporaneous measurements by COMPTEL and EGRET, the spectrum is seen to break at an energy of 1.0(-0.4)(+0.9) Mev to a softer power law with Delta Gamma = 0.7(-0.11)(+0.06), forming a power law with Gamma = 2.4 between similar to 1 MeV and several GeV. C1 GEORGE MASON UNIV, FAIRFAX, VA 22030 USA. CTR ETUD SPATIALE RAYONNEMENTS, TOULOUSE, FRANCE. UNIV SPACE RES ASSOC, WASHINGTON, DC 20375 USA. NORTHWESTERN UNIV, DEPT PHYS & ASTRON, EVANSTON, IL 60208 USA. RP JOHNSON, WN (reprint author), EO HULBURT CTR SPACE RES, NAVAL RES LAB, CODE 7650, WASHINGTON, DC 20375 USA. RI Johnson, Neil/G-3309-2014 NR 55 TC 22 Z9 22 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD MAY 20 PY 1995 VL 445 IS 1 BP 182 EP 188 DI 10.1086/175684 PN 1 PG 7 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QY129 UT WOS:A1995QY12900019 ER PT J AU MUKHERJEE, R ALLER, HD ALLER, MF BERTSCH, DL COLLMAR, W DIGEL, SW DINGUS, BL ESPOSITO, JA FICHTEL, CE HARTMAN, RC HUNTER, SD JOHNSON, WN KANBACH, G KNIFFEN, DA LIN, YC MATTOX, JR MAYERHASSELWANDER, HA MICHELSON, PF VONMONTIGNY, C NOLAN, PL RAMANAMURTHY, PV SCHNEID, E SREEKUMAR, P TERASRANTA, H THOMPSON, DJ WAGNER, SJ AF MUKHERJEE, R ALLER, HD ALLER, MF BERTSCH, DL COLLMAR, W DIGEL, SW DINGUS, BL ESPOSITO, JA FICHTEL, CE HARTMAN, RC HUNTER, SD JOHNSON, WN KANBACH, G KNIFFEN, DA LIN, YC MATTOX, JR MAYERHASSELWANDER, HA MICHELSON, PF VONMONTIGNY, C NOLAN, PL RAMANAMURTHY, PV SCHNEID, E SREEKUMAR, P TERASRANTA, H THOMPSON, DJ WAGNER, SJ TI EGRET GAMMA-RAY SOURCES - GRO-JO744+54 AND GRO-JO957+65 (=BL-LACERTAE OBJECT-0954+658) SO ASTROPHYSICAL JOURNAL LA English DT Article DE BL LACERTAE OBJECTS, INDIVIDUAL (0954+ 658); GAMMA RAYS, OBSERVATIONS ID TELESCOPE; VARIABILITY; 3C-279 AB EGRET detected an unidentified source, GRO J0744+54, at a significance of 6.5 sigma, during its observations from 1993 June 28 to July 12. The source was seen again in the following 2 week viewing period and was weakly evident in the earlier phase 1 of the EGRET observations. Considering the variability of its gamma-ray flux, and its location at high Galactic latitude, GRO J0744+54 is likely to be a previously undetected blazar. Its most likely identification is with the radio source 87GB 073840.5+545138. A second source, GRO J0957+65, was seen by EGRET during the same two viewing periods at a combined significance of 5.7 sigma. The most probable counterpart of GRO J0957+65 is the BL Lacertae object 0954+658. The spectra, time variability, and positions of the two sources are presented. Multiwavelength observations of 0954+658 are also presented. C1 UNIV SPACE RES ASSOC,WASHINGTON,DC. UNIV MICHIGAN,DEPT ASTRON,ANN ARBOR,MI 48109. MAX PLANCK INST EXTRATERR PHYS,W-8046 GARCHING,GERMANY. HARVARD SMITHSONIAN CTR ASTRON,CAMBRIDGE,MA 02138. USN,RES LAB,WASHINGTON,DC 20375. HAMPDEN SYDNEY COLL,HAMPDEN SYDNEY,VA 23943. STANFORD UNIV,WW HANSEN EXPTL PHYS LAB,STANFORD,CA 94305. GRUMMAN AEROSP CORP,BETHPAGE,NY 11714. METSAHOVI RADIO RES STN,SF-02540 KYLMALA,FINLAND. LANDESSTERNWARTE KONIGSTUHL,D-69117 HEIDELBERG,GERMANY. RP MUKHERJEE, R (reprint author), NASA,GODDARD SPACE FLIGHT CTR,CODE 662,GREENBELT,MD 20771, USA. RI Nolan, Patrick/A-5582-2009; Hunter, Stanley/D-2942-2012; Thompson, David/D-2939-2012; Johnson, Neil/G-3309-2014; OI Thompson, David/0000-0001-5217-9135; Dingus, Brenda/0000-0001-8451-7450 NR 31 TC 25 Z9 25 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 1995 VL 445 IS 1 BP 189 EP 195 DI 10.1086/175685 PN 1 PG 7 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QY129 UT WOS:A1995QY12900020 ER PT J AU HERTZ, P GROVE, JE GRABELSKY, DA MATZ, SM AF HERTZ, P GROVE, JE GRABELSKY, DA MATZ, SM TI A SEARCH FOR FAST GAMMA-RAY PULSARS WITH OSSE SO ASTROPHYSICAL JOURNAL LA English DT Article DE GAMMA RAYS, OBSERVATIONS; PULSARS, GENERAL ID SCINTILLATION SPECTROMETER EXPERIMENT; RAPIDLY SPINNING PULSARS; LARGE MAGELLANIC CLOUD; ENERGETIC RADIATION; PULSATIONS; EVOLUTION; DISCOVERY; GEMINGA; BINARY; VELA AB Pulsar mode data from the Oriented Scintillation Spectrometer Experiment (OSSE) onboard the Compton Gamma Ray Observatory, with time resolution between 125 mu s and 8 ms, have been analyzed for the presence of short-period gamma-ray pulsations. Observations of known point sources (including SN 1987A, SN 1993J, GRO J0422+32, and several pulsars) and of regions where higher densities of pulsars are expected (including the Galactic center, the Galactic plane and arms, and the Large Magellanic Cloud) are included in the study. Both isolated pulsars and pulsars in close binary systems are searched for; in the latter case, the quadratic coherence recovery technique is used to correct for broadening of the pulsar signal from orbital motion. No new gamma-ray pulsars have been detected. Upper limits on the pulsed gamma-ray flux from isolated pulsars in the 50-210 keV energy range of OSSE are between 0.2 x 10(-3) and 2.0 x 10(-3) photons s(-1) cm(-2) for pulse periods between 250 mu s and 0.5 s. Upper limits on the pulsed flux from binary pulsars are between 1.5 x 10(-3) and 6.4 x 10(-3) photons s(-1) cm(-2) for the same energy band and pulse period range. We estimate that, in the Galaxy, there are fewer than similar to 125 isolated pulsars similar to PSR B1509-58 with radiation peaks in the OSSE band but undetected in the radio and X-ray bands. C1 NORTHWESTERN UNIV, DEARBORN OBSERV, DEPT PHYS & ASTRON, EVANSTON, IL 60208 USA. RP HERTZ, P (reprint author), USN, RES LAB, EO HULBURT CTR SPACE RES, CODE 76215, WASHINGTON, DC 20375 USA. NR 53 TC 2 Z9 2 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD MAY 20 PY 1995 VL 445 IS 1 BP 351 EP 358 DI 10.1086/175700 PN 1 PG 8 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QY129 UT WOS:A1995QY12900035 ER PT J AU DAGENAIS, DM BUCHOLTZ, F AF DAGENAIS, DM BUCHOLTZ, F TI EXPERIMENTAL-EVIDENCE OF SLOW DYNAMICS IN AMORPHOUS METAL USING FIBEROPTIC INTERFEROMETRY SO APPLIED PHYSICS LETTERS LA English DT Article ID SENSOR; FERROMAGNETS; SIGNALS; MODEL C1 SFA INC,LANDOVER,MD 20785. RP DAGENAIS, DM (reprint author), USN,RES LAB,DIV OPT SCI,CODE 5675,WASHINGTON,DC 20375, USA. NR 13 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD MAY 15 PY 1995 VL 66 IS 20 BP 2605 EP 2607 DI 10.1063/1.113098 PG 3 WC Physics, Applied SC Physics GA QY400 UT WOS:A1995QY40000001 ER PT J AU JOHNSTONE, PAS RIFFENBURGH, R SAUNDERS, EL WILLISON, FW AF JOHNSTONE, PAS RIFFENBURGH, R SAUNDERS, EL WILLISON, FW TI GRADING INACCURACIES IN DIAGNOSTIC BIOPSIES REVEALING PROSTATIC ADENOCARCINOMA - IMPLICATIONS FOR DEFINITIVE RADIATION-THERAPY SO INTERNATIONAL JOURNAL OF RADIATION ONCOLOGY BIOLOGY PHYSICS LA English DT Note DE GLEASON SCORE; HISTOPATHOLOGY; PROGNOSIS; PROSTATE CANCER; RADIOTHERAPY; TUMOR GRADE ID PROSTATECTOMY SPECIMENS; RADICAL PROSTATECTOMY; TUMOR GRADE; CANCER; ACCURACY AB Purpose: A critical determinant of prognosis in prostate cancer is grade of disease. Historically, this has been determined by biopsy of the prostate using transperineal, transrectal, or transurethral approaches. Several reports in the literature reveal that these biopsies often underestimate the histologic grade of the tumor when compared with subsequent radical prostatectomy specimens. Methods and Materials: Data from the literature were analyzed to assess the magnitude of this bias towards undergrading. Grade of biopsy specimens (well-differentiated = Gleason scare 2-4; moderately differentiated = Gleason 5-7; poorly differentiated = Gleason 8-10) were correlated with the ultimate prostatectomy grade, Analysis was made of tendency to undergrade specimens using strict criteria of data inclusion for needle biopsies, and more relaxed criteria for all types of prostate biopsies. Results: Grading accuracy from needle biopsies was 71%, with 23% undergraded and 6% overgraded. A chi-square test on equal chance of under- vs. overgrading yielded p = 0.022. Grading accuracy from needle, open perineal, and transurethral biopsies was 65%, with 23% undergraded and 12% overgraded. A similar chi-square test yielded p = 0.007. In both cases, there appears to exist a significant bias towards undergrading. Conclusions: In addition to other well-documented factors that confound comparisons between radiation therapy and surgical series in carcinoma of the prostate, grade migration exists as well. The equivalence of radiation therapy and surgery with respect to overall survival in this disease is accomplished despite these biases. C1 WALTER REED ARMY MED CTR,RADIAT ONCOL SERV,WASHINGTON,DC. USN,MED CTR,DIV RADIAT ONCOL,SAN DIEGO,CA 92134. RP JOHNSTONE, PAS (reprint author), USN,MED CTR,DEPT CLIN INVEST,SAN DIEGO,CA 92134, USA. NR 18 TC 18 Z9 18 U1 0 U2 1 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. PD MAY 15 PY 1995 VL 32 IS 2 BP 479 EP 482 DI 10.1016/0360-3016(94)00619-V PG 4 WC Oncology; Radiology, Nuclear Medicine & Medical Imaging SC Oncology; Radiology, Nuclear Medicine & Medical Imaging GA RA038 UT WOS:A1995RA03800023 PM 7751188 ER PT J AU GRISCOM, DL AF GRISCOM, DL TI RADIATION HARDENING OF PURE-SILICA-CORE OPTICAL FIBERS BY ULTRA-HIGH-DOSE GAMMA-RAY PREIRRADATION SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID HIGH-PURITY SILICA; ABSORPTION RP GRISCOM, DL (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. RI shao, chongyun/M-6620-2013 NR 23 TC 40 Z9 44 U1 1 U2 3 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD MAY 15 PY 1995 VL 77 IS 10 BP 5008 EP 5013 DI 10.1063/1.359310 PG 6 WC Physics, Applied SC Physics GA QY839 UT WOS:A1995QY83900022 ER PT J AU LAVIN, MF GAXIOLACASTRO, G ROBLES, JM RICHTER, K AF LAVIN, MF GAXIOLACASTRO, G ROBLES, JM RICHTER, K TI WINTER WATER MASSES AND NUTRIENTS IN THE NORTHERN GULF OF CALIFORNIA SO JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS LA English DT Article ID GRAVITY CURRENTS; INVERSE ESTUARY; UPPER OCEAN; VARIABILITY; TEMPERATURE; SEA; SALINITY AB Hydrographic data (salinity, temperature, O-2, PO4, NO3 and SiO2) collected in the northern Gulf of California between February 27 and March 3, 1988, reveal that bottom water formation took place that winter. North of 30.5 degrees N, salinity increased with depth from similar to 35.30 practical salinity units (psu) at the surface to 35.57 psu at the bottom of the 200-m deep Wagner Basin; below similar to 25 m, temperature was almost homogeneous, at similar to 15 degrees C (+/-0.4 degrees C), with some inversions. The TS diagrams and the distribution of dissolved oxygen and nutrients suggest that the most likely origin of this bottom water is the Shallow coastal region (<40 m deep) of the northern Gulf. Elsewhere, the characteristic Gulf of California decrease of salinity with depth was found, from over 35.25 in the surface to 34.90 at 200 m. In the upper similar to 120 m, intermediate salinity (35.0 to 35.3) and nutrient concentrations (phosphate, 1.5-2.0 mu M; nitrate, 12-16 mu M; and silicate, 25-32 mu M) identify the Gulf of California Water this winter. in the deeper layers, low salinity (<35.0) and high nutrients (phosphate, >2.2 mu M; nitrate, >22 mu M; and silicate, >35 mu M) indicate the presence of oceanic water from Guaymas Basin, probably Subsurface Subtropical Water. The boundary between the two regimes was similar to 18 km wide, with clearly defined bottom fronts and intrusions at all depths. Of the several late-winter hydrographic data sets available, only that from March 1973 presents a similar distribution of high-salinity bottom water. Therefore interannual variability (not necessarily El Nino-Southern Oscillation (ENSO) related) can have a profound effect on vertical convection, which can occur both in ENSO and non-ENSO years. An important and as yet unexplained difference between the two data sets is that there was more Gulf of California Water in the northern Gulf of California in 1973 than in 1988. C1 USN,CTR OCEAN SYST,SAN DIEGO,CA 92152. RP LAVIN, MF (reprint author), CICESE,DIV OCEANOL,APARTADO POSTAL 2732,ENSENADA 22800,BAJA CALIFORNIA,MEXICO. NR 50 TC 33 Z9 35 U1 0 U2 3 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES-OCEANS JI J. Geophys. Res.-Oceans PD MAY 15 PY 1995 VL 100 IS C5 BP 8587 EP 8605 DI 10.1029/95JC00138 PG 19 WC Oceanography SC Oceanography GA QY345 UT WOS:A1995QY34500007 ER PT J AU BATTEEN, ML COLLINS, CA GUNDERSON, CR NELSON, CS AF BATTEEN, ML COLLINS, CA GUNDERSON, CR NELSON, CS TI THE EFFECT OF SALINITY ON DENSITY IN THE CALIFORNIA CURRENT SYSTEM SO JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS LA English DT Article ID NORTHERN CALIFORNIA; TEMPERATURE AB There are some indications that in large measure the density anomaly field of the California Current system (CCS) follows temperature, salinity playing a significantly lesser role. These indications have been used as justification for not taking as extensive salinity as temperature observations in the CCS, as well as for using fixed oi prescribed salinity fields in density calculations in dynamic models of the CCS. An extensive data base of temperature-salinity observations from the CCS is used to show that there are noticeable differences between the dynamic height field calculated with and without the inclusion of salinity variations. Hence the distribution of salinity is important in defining the large-scale circulation of the CCS. In particular, owing to the combined effect of temperature and salinity On density, the dynamic height fields show a significant equatorward component along the coast of California and a strong offshore component adjacent to Baja California. Based on these observations, it is concluded that descriptively and dynamically, both temperature and salinity are essential to accurately characterize the large-scale structure of the CCS. C1 USN ACAD,DEPT OCEANOG,ANNAPOLIS,MD 21402. RP BATTEEN, ML (reprint author), USN,POSTGRAD SCH,DEPT OCEANOG,MONTEREY,CA 93943, USA. NR 17 TC 9 Z9 10 U1 0 U2 0 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES-OCEANS JI J. Geophys. Res.-Oceans PD MAY 15 PY 1995 VL 100 IS C5 BP 8733 EP 8749 DI 10.1029/95JC00424 PG 17 WC Oceanography SC Oceanography GA QY345 UT WOS:A1995QY34500016 ER PT J AU RICE, RW WU, CC AF RICE, RW WU, CC TI SLOW CRACK-GROWTH IN MGAL2O4 SINGLE-CRYSTALS AND POLYCRYSTALS SO JOURNAL OF MATERIALS SCIENCE LETTERS LA English DT Article ID SIZE RP RICE, RW (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 22 TC 4 Z9 4 U1 0 U2 0 PU CHAPMAN HALL LTD PI LONDON PA 2-6 BOUNDARY ROW, LONDON, ENGLAND SE1 8HN SN 0261-8028 J9 J MATER SCI LETT JI J. Mater. Sci. Lett. PD MAY 15 PY 1995 VL 14 IS 10 BP 723 EP 727 PG 5 WC Materials Science, Multidisciplinary SC Materials Science GA RA961 UT WOS:A1995RA96100013 ER PT J AU MARTIN, AC CHARLES, PA WAGNER, RM CASARES, J HENDEN, AA PAVLENKO, EP AF MARTIN, AC CHARLES, PA WAGNER, RM CASARES, J HENDEN, AA PAVLENKO, EP TI NEAR-QUIESCENT PHOTOMETRY OF THE X-RAY TRANSIENT J0422+32 SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE ACCRETION, ACCRETION DISCS; BINARIES, CLOSE; BINARIES, SPECTROSCOPIC; STARS, INDIVIDUAL, J0422 + 32; X-RAYS, STARS ID SPACED DATA; BINARIES; MASS AB We present I-band photometry of the soft X-ray transient (SXT) J0422 + 32 taken during a low-brightness state over two weeks in 1993 October, The object had a mean V magnitude of 19.9, approximately 2 mag above its subsequent, presumably quiescent, level of V similar to 22.4. These data revealed a periodicity at 16.18 h (significance level >99 per cent), but we could find no evidence for the previously reported 5.1-h period. We cannot account for the physical origin of this 16-h modulation, but suspect that it is related to the brightness state of J0422 + 32. We show that it cannot be an ellipsoidal effect, as the secondary star would be much brighter than the current minimum. The 5.1-h period could be orbital, with a very late-type (similar to MO-M5) secondary which is too faint to be observable if the distance is greater than or equal to 1 kpc. C1 OHIO STATE UNIV,DEPT ASTRON,COLUMBUS,OH 43210. USN OBSERV,FLAGSTAFF STN,FLAGSTAFF,AZ 86002. CRIMEAN ASTROPHYS OBSERV,NAUCHNYI 334413,UKRAINE. RP MARTIN, AC (reprint author), UNIV OXFORD,NUCL & ASTROPHYS LAB,KEBLE RD,OXFORD OX1 3RH,ENGLAND. NR 32 TC 10 Z9 10 U1 0 U2 0 PU BLACKWELL SCIENCE LTD PI OXFORD PA OSNEY MEAD, OXFORD, OXON, ENGLAND OX2 0EL SN 0035-8711 J9 MON NOT R ASTRON SOC JI Mon. Not. Roy. Astron. Soc. PD MAY 15 PY 1995 VL 274 IS 2 BP 559 EP 564 PG 6 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QZ100 UT WOS:A1995QZ10000027 ER PT J AU JACKEL, S BURRIS, R GRUN, J TING, A MANKA, C EVANS, K KOSAKOWSKII, J AF JACKEL, S BURRIS, R GRUN, J TING, A MANKA, C EVANS, K KOSAKOWSKII, J TI CHANNELING OF TERAWATT LASER-PULSES BY USE OF HOLLOW WAVE-GUIDES SO OPTICS LETTERS LA English DT Article ID RADIATION AB Subpicosecond laser pulses at power levels in excess of 1 TW were channeled through hollow microcapillary tubes by use of a combination of grazing-incidence dielectric and plasma-wall reflection mechanisms. Maximum input and output intensities were 10(17),and 10(16) W/cm(2) through 50-mu m radius by S-cm-long glass microcapillary tubes with as few as two waveguide modes being excited. 133-mu m radius tubes as long as 13 cm resulted in successful channeling with an extinction coefficient of 0.2 cm(-1) and a plasma-wall reflectivity of 80%. RP JACKEL, S (reprint author), USN,RES LAB,DIV PLASMA PHYS,BEAM PHYS BRANCH,CODE 6795,WASHINGTON,DC 20375, USA. NR 17 TC 96 Z9 96 U1 1 U2 3 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 1995 VL 20 IS 10 BP 1086 EP 1088 DI 10.1364/OL.20.001086 PG 3 WC Optics SC Optics GA QX467 UT WOS:A1995QX46700002 PM 19859433 ER PT J AU ZHANG, Q BROWN, DA REINHART, LJ MORSE, TF AF ZHANG, Q BROWN, DA REINHART, LJ MORSE, TF TI LINEARLY AND NONLINEARLY CHIRPED BRAGG GRATINGS FABRICATED ON CURVED FIBERS SO OPTICS LETTERS LA English DT Article ID FILTERS AB We can introduce chirping, or a variation in the periodicity of a Bragg grating, into an optical fiber by writing gratings on curved optical fibers. By precisely specifying the curvature, we can obtain linear, quadratic, and square-root chirped gratings. Experimental and numerical verifications of the relationships between curvature and grating characteristics are presented. C1 BROWN UNIV,DIV ENGN,LIGHTWAVE TECHNOL LAB,PROVIDENCE,RI 02912. USN,POSTGRAD SCH,DEPT PHYS,MONTEREY,CA 93943. NR 9 TC 23 Z9 28 U1 0 U2 2 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 1995 VL 20 IS 10 BP 1122 EP 1124 DI 10.1364/OL.20.001122 PG 3 WC Optics SC Optics GA QX467 UT WOS:A1995QX46700014 PM 19859445 ER PT J AU GOLDBERG, L KLINER, DAV AF GOLDBERG, L KLINER, DAV TI DEEP-UV GENERATION BY FREQUENCY QUADRUPLING OF A HIGH-POWER GAALAS SEMICONDUCTOR-LASER SO OPTICS LETTERS LA English DT Article ID FLUORESCENCE AB Tunable UV radiation near 215 nm was produced by frequency quadrupling the 860-nm emission of a mode-locked external-cavity compound semiconductor laser containing a tapered GaAlAs amplifier. A KNbO3 crystal generated the 430-nm second harmonic, which was doubled by a beta-BaB2O4 crystal, producing tunable UV radiation with as much as 15 mu W of average power. C1 HARVARD UNIV,DEPT EARTH & PLANETARY SCI,CAMBRIDGE,MA 02138. RP GOLDBERG, L (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 17 TC 20 Z9 20 U1 1 U2 3 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 1995 VL 20 IS 10 BP 1145 EP 1147 DI 10.1364/OL.20.001145 PG 3 WC Optics SC Optics GA QX467 UT WOS:A1995QX46700022 PM 19859453 ER PT J AU LINCHUNG, PJ REINECKE, TL AF LINCHUNG, PJ REINECKE, TL TI THERMOELECTRIC FIGURE OF MERIT OF COMPOSITE SUPERLATTICE SYSTEMS SO PHYSICAL REVIEW B LA English DT Article RP LINCHUNG, PJ (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 12 TC 55 Z9 55 U1 0 U2 10 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 1995 VL 51 IS 19 BP 13244 EP 13248 DI 10.1103/PhysRevB.51.13244 PG 5 WC Physics, Condensed Matter SC Physics GA QZ165 UT WOS:A1995QZ16500038 ER PT J AU GLASER, ER KENNEDY, TA DOVERSPIKE, K ROWLAND, LB GASKILL, DK FREITAS, JA KHAN, MA OLSON, DT KUZNIA, JN WICKENDEN, DK AF GLASER, ER KENNEDY, TA DOVERSPIKE, K ROWLAND, LB GASKILL, DK FREITAS, JA KHAN, MA OLSON, DT KUZNIA, JN WICKENDEN, DK TI OPTICALLY DETECTED MAGNETIC-RESONANCE OF GAN FILMS GROWN BY ORGANOMETALLIC CHEMICAL-VAPOR-DEPOSITION SO PHYSICAL REVIEW B LA English DT Article ID SINGLE-CRYSTAL GAN; MG-DOPED GAN; LUMINESCENCE; LAYERS; RECOMBINATION; CENTERS C1 SACHS FREEMAN ASSOCIATES INC, LANDOVER, MD 20785 USA. APA OPT INC, BLAINE, MN 55434 USA. JOHNS HOPKINS UNIV, APPL PHYS LAB, LAUREL, MD 20723 USA. RP GLASER, ER (reprint author), USN, RES LAB, WASHINGTON, DC 20375 USA. RI Rowland, Larry/C-4487-2008 NR 52 TC 302 Z9 312 U1 1 U2 14 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 1995 VL 51 IS 19 BP 13326 EP 13336 DI 10.1103/PhysRevB.51.13326 PG 11 WC Physics, Condensed Matter SC Physics GA QZ165 UT WOS:A1995QZ16500049 ER PT J AU LAMBRECHT, WRL SEGALL, B RIFE, J HUNTER, WR WICKENDEN, DK AF LAMBRECHT, WRL SEGALL, B RIFE, J HUNTER, WR WICKENDEN, DK TI UV REFLECTIVITY OF GAN - THEORY AND EXPERIMENT SO PHYSICAL REVIEW B LA English DT Article ID EXCHANGE-CORRELATION POTENTIALS; HIGH-PRESSURE PHASE; ELECTRONIC-STRUCTURE; GALLIUM NITRIDE; OPTICAL-PROPERTIES; BAND-STRUCTURE; DIELECTRIC RESPONSE; SEMICONDUCTORS; INSULATORS; SPECTRUM C1 USN, RES LAB, WASHINGTON, DC 20375 USA. SACHS FREEMAN ASSOCIATES INC, LANDOVER, MD 20785 USA. JOHNS HOPKINS UNIV, APPL PHYS LAB, BALTIMORE, MD 20723 USA. RP CASE WESTERN RESERVE UNIV, DEPT PHYS, CLEVELAND, OH 44106 USA. RI Lambrecht, Walter/O-1083-2016 NR 68 TC 73 Z9 74 U1 1 U2 4 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 EI 1550-235X J9 PHYS REV B JI Phys. Rev. B PD MAY 15 PY 1995 VL 51 IS 19 BP 13516 EP 13532 DI 10.1103/PhysRevB.51.13516 PG 17 WC Physics, Condensed Matter SC Physics GA QZ165 UT WOS:A1995QZ16500068 ER PT J AU QI, J ANGERER, W YEGANEH, MS YODH, AG THEIS, WM AF QI, J ANGERER, W YEGANEH, MS YODH, AG THEIS, WM TI TRANSVERSE DIFFUSION OF MINORITY-CARRIERS CONFINED NEAR THE GAAS SURFACE PLANE SO PHYSICAL REVIEW B LA English DT Article ID 2ND-HARMONIC GENERATION; SEMICONDUCTOR SURFACES; PHOTOREFLECTANCE; RECOMBINATION; LENGTH; EDGE C1 USN,CTR AIR WARFARE,RES DEPT,DIV PHYS,CHINA LAKE,CA 93555. RP QI, J (reprint author), UNIV PENN,DEPT PHYS,PHILADELPHIA,PA 19104, USA. NR 23 TC 2 Z9 2 U1 0 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 1995 VL 51 IS 19 BP 13533 EP 13537 DI 10.1103/PhysRevB.51.13533 PG 5 WC Physics, Condensed Matter SC Physics GA QZ165 UT WOS:A1995QZ16500069 ER PT J AU BROIDO, DA REINECKE, TL AF BROIDO, DA REINECKE, TL TI EFFECT OF SUPERLATTICE STRUCTURE ON THE THERMOELECTRIC FIGURE OF MERIT SO PHYSICAL REVIEW B LA English DT Note C1 USN,RES LAB,WASHINGTON,DC 20375. RP BROIDO, DA (reprint author), BOSTON COLL,DEPT PHYS,CHESTNUT HILL,MA 02167, USA. NR 14 TC 119 Z9 125 U1 6 U2 30 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 1995 VL 51 IS 19 BP 13797 EP 13800 DI 10.1103/PhysRevB.51.13797 PG 4 WC Physics, Condensed Matter SC Physics GA QZ165 UT WOS:A1995QZ16500103 ER PT J AU SINKOVITS, RS SEN, S AF SINKOVITS, RS SEN, S TI HE ADSORPTION AND INTERCALATION IN C-60 FULLERITE CRYSTALS SO PHYSICAL REVIEW B LA English DT Note ID ORIENTATIONAL ORDERING TRANSITION; SOLID-STATE; GRAPHITE; CARBON; C60 C1 SUNY BUFFALO,DEPT PHYS,BUFFALO,NY 14260. RP SINKOVITS, RS (reprint author), USN,RES LAB,CODE 6410,WASHINGTON,DC 20375, USA. NR 15 TC 7 Z9 7 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD MAY 15 PY 1995 VL 51 IS 19 BP 13841 EP 13844 DI 10.1103/PhysRevB.51.13841 PG 4 WC Physics, Condensed Matter SC Physics GA QZ165 UT WOS:A1995QZ16500115 ER PT J AU DELAISSARDIERE, GT DANKHAZI, Z BELIN, E SADOC, A DUC, NM MAYOU, D KEEGAN, MA PAPACONSTANTOPOULOS, DA AF DELAISSARDIERE, GT DANKHAZI, Z BELIN, E SADOC, A DUC, NM MAYOU, D KEEGAN, MA PAPACONSTANTOPOULOS, DA TI EXPERIMENTAL AND THEORETICAL ELECTRONIC DISTRIBUTIONS IN AL-CU-BASED ALLOYS SO PHYSICAL REVIEW B LA English DT Article ID FE ICOSAHEDRAL PHASE; QUASI-CRYSTALS; X-RAY; STATES C1 CONCERTAT INVEST QUASICRISTAUX, GRPMENT RECH, F-38042 GRENOBLE, FRANCE. CNRS, CHIM PHYS MAT & RAYONNEMENT LAB, URA 176, PARIS, FRANCE. CONCERTAT INVEST QUASICRISTAUX, GRPMENT RECH, F-75231 PARIS 05, FRANCE. INST SOLID STATE PHYS, H-1088 BUDAPEST, HUNGARY. CEA, CNRS, UTILISAT RAYONNEMENT ELECTROMAGNET LAB, ORSAY, FRANCE. UNIV PARIS SUD, CONCERTAT INVEST QUASICRISTAUX, GRPMENT RECH, F-91405 PARIS, FRANCE. UNIV CERGY PONTOISE, PHYS MAT SURFACES LAB, F-95806 CERGY, FRANCE. GEORGE MASON UNIV, INST COMPUTAT SCI & INFORMAT, FAIRFAX, VA 22030 USA. USN, RES LAB, COMPLEX SYST THEORY BRANCH, WASHINGTON, DC 20375 USA. RP DELAISSARDIERE, GT (reprint author), CNRS, ETUD PROPRIETES ELECTR SOLIDES LAB, GRENOBLE, FRANCE. RI Trambly de Laissardiere, Guy/R-8090-2016 OI Trambly de Laissardiere, Guy/0000-0001-9065-7337 NR 39 TC 24 Z9 24 U1 0 U2 3 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD MAY 15 PY 1995 VL 51 IS 20 BP 14035 EP 14047 DI 10.1103/PhysRevB.51.14035 PG 13 WC Physics, Condensed Matter SC Physics GA RB213 UT WOS:A1995RB21300012 ER PT J AU KEEGAN, MA PAPACONSTANTOPOULOS, DA AF KEEGAN, MA PAPACONSTANTOPOULOS, DA TI ELECTRONIC-STRUCTURE AND TOTAL-ENERGY CALCULATIONS BY A SEMI-SELF-CONSISTENT AUGMENTED-PLANE-WAVE METHOD SO PHYSICAL REVIEW B LA English DT Article ID DENSITY-FUNCTIONAL THEORY; HARRIS; SOLIDS; METALS C1 USN, RES LAB, COMPLEX SYST THEORY BRANCH, WASHINGTON, DC 20375 USA. RP KEEGAN, MA (reprint author), GEORGE MASON UNIV, INST COMPUTAT SCI & INFORMAT, FAIRFAX, VA 22030 USA. NR 22 TC 1 Z9 1 U1 0 U2 1 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD MAY 15 PY 1995 VL 51 IS 20 BP 14048 EP 14056 DI 10.1103/PhysRevB.51.14048 PG 9 WC Physics, Condensed Matter SC Physics GA RB213 UT WOS:A1995RB21300013 ER PT J AU HELLIWELL, TM KONKOWSKI, DA AF HELLIWELL, TM KONKOWSKI, DA TI STABILITY OF THE CAUCHY HORIZON IN ANTI-DE SITTER SPACETIME SO PHYSICAL REVIEW D LA English DT Article ID QUASIREGULAR SINGULARITIES; BLACK-HOLES; TIMES; COSMOLOGIES; INTERIOR C1 USN ACAD,DEPT MATH,ANNAPOLIS,MD 21402. UNIV LONDON QUEEN MARY & WESTFIELD COLL,SCH MATH SCI,LONDON E1 4NS,ENGLAND. RP HELLIWELL, TM (reprint author), HARVEY MUDD COLL,DEPT PHYS,CLAREMONT,CA 91711, USA. NR 27 TC 7 Z9 7 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2821 J9 PHYS REV D JI Phys. Rev. D PD MAY 15 PY 1995 VL 51 IS 10 BP 5517 EP 5521 DI 10.1103/PhysRevD.51.5517 PG 5 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA QZ151 UT WOS:A1995QZ15100016 ER PT J AU SEITZMAN, LE BOLSTER, RN SINGER, IL AF SEITZMAN, LE BOLSTER, RN SINGER, IL TI EFFECTS OF TEMPERATURE AND ION-TO-ATOM RATIO ON THE ORIENTATION OF IBAD MOS2 COATINGS SO THIN SOLID FILMS LA English DT Article DE DEPOSITION; MOLYBDENUM SULFIDE; OXIDATION ID BEAM-ASSISTED DEPOSITION; FRICTION PROPERTIES; THIN-FILMS; LAYERS AB MoS2 coatings, 55-800 nm thick, were grown by ion-beam-assisted deposition (IBAD) using different ion-to-atom ratios and deposition temperatures. Crystallinity and orientation of the IBAD MoS2 coatings were determined by X-ray diffraction (XRD). Only XRD peaks corresponding to (001), (hkO), and amorphous MoS2, and a previously unreported low-2 Theta peak (2 Theta approximate to 10.7 degrees) were observed. The basal (002) peak intensities varied primarily with ion-to-atom ratio; the greatest basal intensity occurred when the ion-to-atom ratio produced about 1 displacement per atom. Although a secondary factor in basal intensity, deposition temperature was the primary factor in edge (100) intensity. Edge intensity increased with increasing temperature; it appears that the increases are due to annealing of randomly-oriented MoS2, which converts to edge orientation. The origin of the low-2 Theta peak is unknown, but appears to be associated with the basal planes of MoS2. RP SEITZMAN, LE (reprint author), USN,RES LAB,CODE 6170,WASHINGTON,DC 20375, USA. NR 24 TC 33 Z9 33 U1 0 U2 4 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 MAY 15 PY 1995 VL 260 IS 2 BP 143 EP 147 DI 10.1016/0040-6090(94)06419-9 PG 5 WC Materials Science, Multidisciplinary; Materials Science, Coatings & Films; Physics, Applied; Physics, Condensed Matter SC Materials Science; Physics GA RA214 UT WOS:A1995RA21400002 ER PT J AU HARRISON, JA WHITE, CT COLTON, RJ BRENNER, DW AF HARRISON, JA WHITE, CT COLTON, RJ BRENNER, DW TI INVESTIGATION OF THE ATOMIC-SCALE FRICTION AND ENERGY-DISSIPATION IN DIAMOND USING MOLECULAR-DYNAMICS SO THIN SOLID FILMS LA English DT Article DE ADHESION; ATOMIC FORCE MICROSCOPY; DIAMOND; INTERFACES ID FORCE MICROSCOPY; SURFACES; FILMS; SIMULATIONS; WEAR; TIP; NANOTRIBOLOGY AB We have used molecular dynamics simulations to examine friction when two diamond (111) surfaces are placed in sliding contact. The essence of atomic-scale friction was shown to be the mechanical excitation (in the form of vibrational and rotational energy) of the interface lattice layers upon sliding. This excitation was propagated to the rest of the lattice, and eventually dissipated as heat. In general, this excitation increases with increasing applied load; therefore, the atomic-scale friction also increases with load. Flexible hydrocarbon species, chemically bound to the diamond surface, can lead to a significant reduction of mechanical excitation upon sliding at high loads, leading to lower friction. In addition to clarifying the effects of chemically-bound hydrocarbon groups on atomic-scale friction at diamond interfaces, these simulations might also yield insight into more complicated systems, e.g. Langmuir-Blodgett films, and aid in the design of low-friction coatings. C1 USN,RES LAB,SURFACE CHEM SECT,CODE 6170,WASHINGTON,DC 20375. RP HARRISON, JA (reprint author), USN ACAD,DEPT CHEM,ANNAPOLIS,MD 21402, USA. RI Brenner, Donald/D-1741-2009 NR 30 TC 76 Z9 80 U1 2 U2 16 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 MAY 15 PY 1995 VL 260 IS 2 BP 205 EP 211 DI 10.1016/0040-6090(94)06511-X PG 7 WC Materials Science, Multidisciplinary; Materials Science, Coatings & Films; Physics, Applied; Physics, Condensed Matter SC Materials Science; Physics GA RA214 UT WOS:A1995RA21400012 ER PT J AU DAVIS, MA KERSEY, AD AF DAVIS, MA KERSEY, AD TI MATCHED-FILTER INTERROGATION TECHNIQUE FOR FIBER BRAGG GRATING ARRAYS SO ELECTRONICS LETTERS LA English DT Article DE FIBER OPTIC SENSORS; GRATINGS IN FIBERS ID STRAIN-SENSOR; SYSTEM AB A technique for the demodulation of fibre Bragg grating (FBG) sensor arrays that uses a matched grating array to optically Filter and track wavelength shifts from the FBG sensors is demonstrated. The use of matched grating arrays in the serial configuration represents an efficient and potentially low-cost interrogation technique for FBG sensors. RP DAVIS, MA (reprint author), USN,RES LAB,DIV OPT SCI,CODE 5673,WASHINGTON,DC 20375, USA. NR 6 TC 95 Z9 151 U1 0 U2 8 PU IEE-INST ELEC ENG PI HERTS PA MICHAEL FARADAY HOUSE SIX HILLS WAY STEVENAGE, HERTS, ENGLAND SG1 2AY SN 0013-5194 J9 ELECTRON LETT JI Electron. Lett. PD MAY 11 PY 1995 VL 31 IS 10 BP 822 EP 823 DI 10.1049/el:19950547 PG 2 WC Engineering, Electrical & Electronic SC Engineering GA RA565 UT WOS:A1995RA56500039 ER PT J AU COOK, JW KEENAN, FP DUFTON, PL KINGSTON, AE PRADHAN, AK ZHANG, HL DOYLE, JG HAYES, MA AF COOK, JW KEENAN, FP DUFTON, PL KINGSTON, AE PRADHAN, AK ZHANG, HL DOYLE, JG HAYES, MA TI THE O-IV AND S-IV INTERCOMBINATION LINES IN SOLAR AND STELLAR ULTRAVIOLET-SPECTRA SO ASTROPHYSICAL JOURNAL LA English DT Article DE ATOMIC DATA; ATOMIC PROCESSES; SUN, UV RADIATION; ULTRAVIOLET, STARS ID HIGH-RESOLUTION TELESCOPE; N-III; RATE COEFFICIENTS; EMISSION; RATIOS; SPECTROGRAPH; EXCITATION; REGION; IONS; SUN AB New calculations of O IV electron density diagnostic emission-line ratios involving the 1399.8, 1401.2, 1404.8, and 1407.4 Angstrom transitions are presented. A comparison of these calculations with observational data from a quiet solar region, a sunspot, and an active region obtained with the High Resolution Telescope and Spectrograph (HRTS), two flares observed with the SO82B spectrograph on board Skylab, and Hubble Space Telescope observations by the Goddard High Resolution Spectrograph (GHRS) of Capella, gives good results using the ratio R(1) = I(1407.4 Angstrom)/I(1401.2 Angstrom). However, the electron density obtained using the ratio R(2) = I(1407.4 Angstrom)/I(1404.8 Angstrom) is often an order of magnitude smaller. The O IV 1404.8 Angstrom line is blended with the S IV 1404.8 Angstrom line, and we investigate whether this ratio may still be used as a density diagnostic if the S IV 1406.1 Angstrom line intensity is used to correct for the presence of S IV 1404.8 Angstrom, using previous S IV calculations by Dufton et al. We still find systematic differences compared to density determinations from line ratios that do not involve the O IV 1404.8 Angstrom line, which we suggest are due to errors in earlier theoretical calculations of the S IV atomic data, and also possibly to previously unconsidered fluorescent pumping of the upper level of the S IV 1404.8 Angstrom transition. C1 QUEENS UNIV BELFAST,DEPT PURE & APPL PHYS,BELFAST BT7 1NN,ANTRIM,NORTH IRELAND. QUEENS UNIV BELFAST,DEPT APPL MATH & THEORET PHYS,BELFAST BT7 1NN,ANTRIM,NORTH IRELAND. OHIO STATE UNIV,DEPT ASTRON,COLUMBUS,OH 43210. ARMAGH OBSERV,ARMAGH BT61 9DG,NORTH IRELAND. DARESBURY LAB,WARRINGTON WA4 4AD,CHESHIRE,ENGLAND. RP COOK, JW (reprint author), USN,RES LAB,EO HULBURT CTR SPACE RES,CODE 7663,WASHINGTON,DC 20375, USA. NR 35 TC 32 Z9 32 U1 1 U2 1 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD MAY 10 PY 1995 VL 444 IS 2 BP 936 EP 942 DI 10.1086/175664 PN 1 PG 7 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QV701 UT WOS:A1995QV70100041 ER PT J AU BASSANI, L MALAGUTI, G JOURDAIN, E ROQUES, JP JOHNSON, WN AF BASSANI, L MALAGUTI, G JOURDAIN, E ROQUES, JP JOHNSON, WN TI DETECTION OF SOFT GAMMA-RAY EMISSION FROM THE SEYFERT-2 GALAXY NGC-4507 BY THE OSSE TELESCOPE SO ASTROPHYSICAL JOURNAL LA English DT Article DE GALAXIES, INDIVIDUAL (NGC 4507); GALAXIES, SEYFERT; GAMMA RAYS, OBSERVATIONS; X-RAYS, GALAXIES ID ACTIVE GALAXIES; ABSORPTION AB We report the first soft gamma-ray observation by the OSSE experiment on board the Compton Gamma Ray Observatory (CGRO) of the optically selected Seyfert 2 galaxy NGC 4507. The source was observed on two separate weeks in 1993 and detected between 50 and 200 keV at a confidence level of 7 sigma. There is no evidence of flux variability within or between the two observation periods which sample timescales from days to months. The source spectrum obtained from combining the two sets of data is best described by spectral forms including some exponential cutoff. For example, the best-fit thermal bremsstrahlung model provides a temperature of kT = 95(-25)(+31), while a thermal Comptonization model gives a plasma temperature of 44(-9)(+)7 keV for an optical depth of 3; the 100 keV intensity is typically 5 x 10(-6) photons cm(-2) s(-1) keV(-1). The observed shape is steeper than the one observed by Ginga in the X-ray band in 1990. The joint Ginga-OSSE spectrum is best described by an absorbed power law exponentially cut off at high energies and having an iron K alpha emission line; acceptable fits can be obtained without (f(r) = 0) or with (f(r) = 1) a Compton reflection component. In the first case we find a harder photon index (Gamma = 1.3 +/- 0.2) and a lower cutoff energy (E(c) = 73(-24)(+48) keV) than in Seyfert 1 galaxies, while in the second case the fit parameters are within the range of values observed in type 1 objects (Gamma = 1.7 +/- 0.2 and E(c) = 150(-66)(+290) keV); the statistics are, however, insufficient to discriminate between these two spectral shapes, although a slightly better fit is obtained with reflection included. Comparison between NGC 4507 and other Seyfert galaxies indicates that although al low energies a difference between type 1 and type 2 objects is possible (but still weak in this specific case), at high energies the observed shapes are indeed similar. We interpret this as evidence that the primary source emission (i.e., not reprocessed by material in the source) is the same for both types; this finding is in agreement with the unified scheme of Seyfert galaxies. Apart from its own interest, the OSSE detection of hard X-ray emission from a Seyfert 2 galaxy is also important because of the implications it has for the contribution of Seyfert galaxies of both types to the cosmic diffuse background, since type 2 objects are expected to outnumber type 1 sources. C1 CTR ETUD SPATIALE RAYONNEMENTS,CNRS,UPS,F-31029 TOULOUSE,FRANCE. USN,RES LAB,EO HULBURT CTR SPACE RES,WASHINGTON,DC 20375. RP BASSANI, L (reprint author), CNR,IST TESRE,VIA P GOBETTI 101,I-40129 BOLOGNA,ITALY. RI Johnson, Neil/G-3309-2014; OI Malaguti, Giuseppe/0000-0001-9872-3378; Bassani, Loredana/0000-0003-4858-6963 NR 18 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 MAY 10 PY 1995 VL 444 IS 2 BP L73 EP L76 DI 10.1086/187863 PN 2 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QV709 UT WOS:A1995QV70900004 ER PT J AU TYLKA, AJ BOBERG, PR ADAMS, JH BEAHM, LP DIETRICH, WF KLEIS, T AF TYLKA, AJ BOBERG, PR ADAMS, JH BEAHM, LP DIETRICH, WF KLEIS, T TI THE MEAN IONIC CHARGE-STATE OF SOLAR ENERGETIC FE IONS ABOVE 200 MEV PER NUCLEON SO ASTROPHYSICAL JOURNAL LA English DT Article DE ACCELERATION OF PARTICLES; SOLAR WIND; SUN, FLARES; SUN, PARTICLE EMISSION ID PARTICLE EVENTS; IONIZATION EQUILIBRIUM; GEOSYNCHRONOUS ORBIT; FLARES; ABUNDANCES; ACCELERATION; SERIES; MODEL AB We have analyzed the geomagnetic transmission of solar energetic Fe ions at similar to 200-600 MeV per nucleon during the great solar energetic particle (SEP) events of 1989 September-October. By comparing fluences from the Chicago charged-particle telescope on IMP-8 in interplanetary space and from NRL's Heavy Ions in Space (HIIS) experiment aboard the Long Duration Exposure Facility (LDEF) in low-Earth orbit, we obtain a mean ionic charge [Q] = 14.2 +/- 1.4. This result is significantly lower than [Q] observed at similar to 1 MeV per nucleon in impulsive, He-3-rich SEP events, indicating that neither acceleration at the flare site nor flare-heated plasma significantly contributes to the high-energy Fe ions we observe. But it agrees well with the (Q) observed in gradual SEP events at similar to 1 MeV per nucleon, in which ions are accelerated by shocks driven by fast coronal mass ejections, and hence shows that particles are accelerated to very high energies in this way. We also note apparent differences between solar wind and SEP charge state distributions, which may favor a coronal (rather than solar wind) seed population or may suggest additional ionization in the ambient shock-region plasma. C1 UNIV CHICAGO, ENRICO FERMI INST, ASTROPHYS & SPACE RES LAB, CHICAGO, IL 60637 USA. GEORGE MASON UNIV, CSI INST, FAIRFAX, VA 22030 USA. RP TYLKA, AJ (reprint author), USN, RES LAB, EO HULBURT CTR SPACE RES, WASHINGTON, DC 20375 USA. RI Tylka, Allan/G-9592-2014 NR 50 TC 72 Z9 72 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X EI 1538-4357 J9 ASTROPHYS J JI Astrophys. J. PD MAY 10 PY 1995 VL 444 IS 2 BP L109 EP L113 DI 10.1086/187872 PN 2 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QV709 UT WOS:A1995QV70900013 ER PT J AU NEEDLEMAN, SB PORVAZNIK, M AF NEEDLEMAN, SB PORVAZNIK, M TI IDENTIFICATION OF PARENT BENZODIAZEPINES BY GAS-CHROMATOGRAPHY MASS-SPECTROSCOPY (GC/MS) FROM URINARY EXTRACTS TREATED WITH B-GLUCURONIDASE SO FORENSIC SCIENCE INTERNATIONAL LA English DT Article DE PARENT BENZODIAZEPINES, IDENTIFICATION OF; GAS CHROMATOGRAPHY MASS SPECTROSCOPY; B-GLUCURONIDASE AB Urinary glucuronide metabolites of the benzodiazepines were converted back to the parent molecules after treatment with B-glucuronidase. The benzodiazepines were extracted by a one-step liquid/liquid extraction from urine or by a liquid/solid phase extraction. For the limit of detection (LOD), a standard solution of diazepam and oxazepam was serially diluted and analyzed to the point at which a reproducible analytical result was no longer obtained, Using a temperature program and a splitless mode of injection, excellent quantitation was achieved within an I-min run time. Based upon specimens obtained from patients under a physician's care, we have determined that urinary concentrations of the benzodiazepines > 200 ng/ml are most likely due to abuse rather than to a prescribed ingestion under strict medical surveillance. Therefore, the calibration standard and cutoff concentration for a positive result was set at 200 ng/ml. C1 USN,DRUG SCREENING LAB,AIR STN,GREAT LAKES,IL 60088. RP NEEDLEMAN, SB (reprint author), USN,DRUG SCREENING LAB,GREAT LAKES,IL 60088, USA. NR 10 TC 16 Z9 16 U1 0 U2 0 PU ELSEVIER SCI PUBL IRELAND LTD PI CLARE PA CUSTOMER RELATIONS MANAGER, BAY 15, SHANNON INDUSTRIAL ESTATE CO, CLARE, IRELAND SN 0379-0738 J9 FORENSIC SCI INT JI Forensic Sci.Int. PD MAY 9 PY 1995 VL 73 IS 1 BP 49 EP 60 DI 10.1016/0379-0738(95)80001-8 PG 12 WC Medicine, Legal SC Legal Medicine GA RA708 UT WOS:A1995RA70800006 PM 7750882 ER PT J AU VUILLERMOZ, P ORAN, ES AF VUILLERMOZ, P ORAN, ES TI MIXING REGIMES IN A SPATIALLY CONFINED 2-DIMENSIONAL COMPRESSIBLE MIXING LAYER SO PROCEEDINGS OF THE ROYAL SOCIETY-MATHEMATICAL AND PHYSICAL SCIENCES LA English DT Article ID TURBULENT SHEAR-LAYER AB The evolution of a high-speed compressible confined temporally evolving supersonic mixing layer between hydrogen and oxygen gas streams is examined using time-dependent two-dimensional numerical simulations that include the effects of viscosity, molecular diffusion and thermal conduction. The flow shows three distinct mixing regimes: an apparently ordered, laminar stage in which the structures grow due to the initial perturbation; a convective-mixing regime in which vortices begin to interact and structures grow; and a diffusive-mixing regime in which vortical structures break down and diffusive mixing dominates. Varying the strength of the diffusion terms shows that diffusion is important in the laminar and diffusive-mixing stages, but not in the convective-mixing stage. Varying the convective Mach shows that compressiblity does not change the general structural features of the mixing process, although higher compressibility results in a slower transition between the various flow regimes. Increasing the size of the computational domain increases the absolute time of transition from convective to diffusive mixing, but does not affect the dimensionless time normalized to the system size. Comparisons between full Navier-Stokes computations at different levels of numerical resolution show that the measurements of scalar mixing converge for resolutions at an order of magnitude greater than the Kolmogorov scale, although measurements of turbulence intensity are more sensitive to grid size. C1 USN, RES LAB, COMPUTAT PHYS & FLUID DYNAM LAB, WASHINGTON, DC 20375 USA. RP VUILLERMOZ, P (reprint author), CTR NATL ETUD SPATIALES, ROND POINT ESPACE, F-91023 EVRY, FRANCE. NR 36 TC 3 Z9 3 U1 0 U2 0 PU ROYAL SOC PI LONDON PA 6-9 CARLTON HOUSE TERRACE, LONDON SW1Y 5AG, ENGLAND SN 0962-8444 J9 P R SOC-MATH PHYS SC JI P. Roy. Soc.-Math. Phys. Sci. PD MAY 9 PY 1995 VL 449 IS 1936 BP 351 EP 380 DI 10.1098/rspa.1995.0049 PG 30 GA QY101 UT WOS:A1995QY10100011 ER PT J AU VAVRA, W CHENG, SF FINK, A KREBS, JJ PRINZ, GA AF VAVRA, W CHENG, SF FINK, A KREBS, JJ PRINZ, GA TI PERPENDICULAR CURRENT MAGNETORESISTANCE IN CO/CU/NIFECO/CU MULTILAYERED MICROSTRUCTURES SO APPLIED PHYSICS LETTERS LA English DT Article ID GIANT C1 USN,CTR SURFACE WARFARE,SILVER SPRING,MD 20910. NONVOLATILE ELECTR INC,EDEN PRAIRIE,MN 55344. RP VAVRA, W (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 6 TC 28 Z9 28 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 MAY 8 PY 1995 VL 66 IS 19 BP 2579 EP 2581 DI 10.1063/1.113507 PG 3 WC Physics, Applied SC Physics GA QX026 UT WOS:A1995QX02600044 ER PT J AU CLARK, AF ZIMMERMAN, NM WILLIAMS, ER AMAR, A SONG, D WELLSTOOD, FC LOBB, CJ SOULEN, RJ AF CLARK, AF ZIMMERMAN, NM WILLIAMS, ER AMAR, A SONG, D WELLSTOOD, FC LOBB, CJ SOULEN, RJ TI APPLICATION OF SINGLE-ELECTRON TUNNELING - PRECISION CAPACITANCE RATIO MEASUREMENTS SO APPLIED PHYSICS LETTERS LA English DT Article C1 UNIV MARYLAND,COLLEGE PK,MD 20742. USN,RES LAB,WASHINGTON,DC 20375. RP CLARK, AF (reprint author), NIST,GAITHERSBURG,MD 20899, USA. RI Joint Quantum Institute, NIST/UMD/H-4494-2011 NR 10 TC 14 Z9 14 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 8 PY 1995 VL 66 IS 19 BP 2588 EP 2590 DI 10.1063/1.113510 PG 3 WC Physics, Applied SC Physics GA QX026 UT WOS:A1995QX02600047 ER PT J AU KAUFMAN, B MIDDOUR, J DASENBROCK, R CAMPION, R AF KAUFMAN, B MIDDOUR, J DASENBROCK, R CAMPION, R TI AN OVERVIEW OF THE ASTRODYNAMICS FOR THE DEEP SPACE PROGRAM SCIENCE EXPERIMENT MISSION (DSPSE) SO ACTA ASTRONAUTICA LA English DT Article; Proceedings Paper CT 44th Congress of the International-Astronautical-Federation CY OCT 16, 1993 CL GRAZ, AUSTRIA SP Int Astron Federat AB In early 1994, the Deep Space Program Science Experiment (DSPSE) will place a spacecraft in orbit about the Moon to test lightweight BMDO technology components in a mapping mission and a flyby of the asteroid Geographos in early September of 1994. This paper will outline the unique astrodynamics aspects of the mission in an overview form. The topics covered will be: the transfer from Earth orbit to the Moon; the lunar orbit; the transfer to Geographos; the flyby of Geographos; the autonomous navigation aspects of the various phases of the mission; and orbit improvement for Geographos. RP KAUFMAN, B (reprint author), USN,RES LAB,ASTRODYNAM & SPACE APPLICAT OFF,CODE 8103,4455 OVERLOOK AVE,WASHINGTON,DC 20375, USA. NR 0 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 0094-5765 J9 ACTA ASTRONAUT JI Acta Astronaut. PD MAY-JUN PY 1995 VL 35 IS 9-11 BP 661 EP 668 DI 10.1016/0094-5765(95)00011-N PG 8 WC Engineering, Aerospace SC Engineering GA RK466 UT WOS:A1995RK46600013 ER PT J AU JACOBS, JC AF JACOBS, JC TI ASPIRATION CYTOLOGY OF PROLIFERATIVE MYOSITIS - A CASE-REPORT SO ACTA CYTOLOGICA LA English DT Note DE MYOSITIS; ASPIRATION BIOPSY; SOFT TISSUE NEOPLASMS ID MASSETER MUSCLE AB A case of proliferative myositis (PM) diagnosed by fine needle aspiration biopsy (FNAB) is described. A 72-year-old old, white male presented with a 3.0-cm, firm, nontender mass involving the right sternocleidomastoid muscle. FNAB showed loose clusters of uniform, fibroblastlike spindle cells and admired large, ganglion cell-like cells with eccentric nuclei, prominent nucleoli and abundant cytoplasm. The cytologic appearance of PM is characteristic, allowing exclusion of malignancy; reliable FNAB diagnosis when supported by clinical findings; and avoidance of unnecessary, radical surgery. RP JACOBS, JC (reprint author), USN HOSP,DEPT LAB,OAKLAND,CA 94627, USA. NR 13 TC 13 Z9 15 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 0001-5547 J9 ACTA CYTOL JI Acta Cytol. PD MAY-JUN PY 1995 VL 39 IS 3 BP 535 EP 538 PG 4 WC Pathology SC Pathology GA QZ565 UT WOS:A1995QZ56500029 PM 7762347 ER PT J AU HANSEN, DA ROBBINS, BA BYLUND, DJ ELLISON, DJ PIRO, LD SAVEN, A AF HANSEN, DA ROBBINS, BA BYLUND, DJ ELLISON, DJ PIRO, LD SAVEN, A TI BENCE-JONES PROTEINURIA IN CHRONIC LYMPHOCYTIC-LEUKEMIA - REPLY SO AMERICAN JOURNAL OF CLINICAL PATHOLOGY LA English DT Letter ID LIGHT-CHAINS C1 SCRIPPS CLIN & RES FDN,DEPT PATHOL,LA JOLLA,CA 92037. SCRIPPS CLIN & RES FDN,DIV HEMATOL & MED ONCOL,LA JOLLA,CA 92037. RP HANSEN, DA (reprint author), USN,MED CTR,DEPT PATHOL,PORTSMOUTH,VA, USA. NR 5 TC 0 Z9 0 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQUARE, PHILADELPHIA, PA 19106 SN 0002-9173 J9 AM J CLIN PATHOL JI Am. J. Clin. Pathol. PD MAY PY 1995 VL 103 IS 5 BP 666 EP 667 PG 2 WC Pathology SC Pathology GA QX171 UT WOS:A1995QX17100024 ER PT J AU STEVENS, DM DUTKA, AJ SNYDER, JE AF STEVENS, DM DUTKA, AJ SNYDER, JE TI VESTIBULOOCULAR REFLEX GAIN AS A MEASURE OF VESTIBULAR FUNCTION IN GUINEA-PIGS WHILE IN A RECOMPRESSION CHAMBER - APPARATUS DESIGN AND EFFECTS OF NITROGEN NARCOSIS SO AMERICAN JOURNAL OF OTOLOGY LA English DT Article AB There are several mechanisms whereby alteration of barometric pressure can produce vertigo in divers or aviators. Development of a reliable measure of vestibular function in an animal model is the first requirement for further study of these mechanisms. This report presents the development of a rotatory table device capable of evoking the vestibulo-ocular reflex (VOR) of a guinea pig while in a hyperbaric chamber. To assess the reproducibility of this response, eight animals were monitored by electronystagmography during rotations at three table velocities (62.4, 83.3, and 100 degrees/s). Two test sessions were performed on each animal with a 6-hour interval between sessions. The VOR gain was calculated by dividing the average peak velocity of the slow phase component of the nystagmus by the peak stimulus velocity. At least eight observations per test speed were averaged; calibration of eye movement was performed prior to each session by forced ocular abduction. Multifactorial analysis of variance revealed no significant differences (p > .05) between the differing rotation speeds nor between test sessions for individual animals. However, there was a significant difference in VOR gain between animals (p < .002). The VOR gain was then measured, using the same techniques, in another group of seven animals before, during, and after an air dive to the equivalent of 200 feet of seawater (7.06 atmospheres absolute) to assess the effects of nitrogen narcosis. Pre- and post-dive VOR gains were significantly greater than those measured at depth (p < .05). These results are consistent with the slow processing model of nitrogen narcosis and the controversial theory that central nervous system depressants decrease the VOR gain. The results also demonstrate the ability of this inexpensive apparatus to provide a sensitive measure of pressure-induced changes of vestibular function in guinea pigs. RP STEVENS, DM (reprint author), USN,MED COMMAND,DEPT OTOLARYNGOL HEAD & NECK SURG,BETHESDA,MD 20889, USA. NR 19 TC 3 Z9 3 U1 0 U2 1 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 0192-9763 J9 AM J OTOL JI Am. J. Otol. PD MAY PY 1995 VL 16 IS 3 BP 360 EP 364 PG 5 WC Otorhinolaryngology SC Otorhinolaryngology GA QV688 UT WOS:A1995QV68800016 PM 8588631 ER PT J AU MESZOELY, CAM ERBE, ER WERGIN, WP HOFFMAN, SL AF MESZOELY, CAM ERBE, ER WERGIN, WP HOFFMAN, SL TI PLASMODIUM-VIVAX - FREEZE-FRACTURE STUDIES ON THE ULTRASTRUCTURE OF THE SPOROZOITES WITHIN THE SALIVARY-GLAND OF THE MOSQUITO ANOPHELES-STEPHENSI SO AMERICAN JOURNAL OF TROPICAL MEDICINE AND HYGIENE LA English DT Article ID SURFACE PROTEIN-2 AB Freeze-fracturing has been used to study the ultrastructure of the sporozoites of the malarial parasite Plasmodium vivax within the salivary gland of the mosquito Anopheles stephensi. The architecture of the pellicular complex of the salivary gland sporozoites was essentially the same as that reported for the intraoocystic forms, but the outline of cross-fractured P. vivax sporozoites was more flattened and crescent shaped as opposed to the circular outline described for the intraoocystic sporozoites. The salivary gland sporozoites of P. vivax also exhibited apical rosettes and a cytosome connected to a food vacuole, two unique structures not previously reported for malarial sporozoites. C1 USDA,ELECTRON MICROSCOPY LAB,BELTSVILLE,MD 20705. USN,MED RES INST,MALARIA PROGRAM,BETHESDA,MD 20889. RP MESZOELY, CAM (reprint author), NORTHEASTERN UNIV,DEPT BIOL,BOSTON,MA 02115, USA. FU NCRR NIH HHS [RR07143] NR 10 TC 1 Z9 1 U1 1 U2 1 PU AMER SOC TROP MED & HYGIENE PI MCLEAN PA 8000 WESTPARK DRIVE SUITE 130, MCLEAN, VA 22101 SN 0002-9637 J9 AM J TROP MED HYG JI Am. J. Trop. Med. Hyg. PD MAY PY 1995 VL 52 IS 5 BP 443 EP 449 PG 7 WC Public, Environmental & Occupational Health; Tropical Medicine SC Public, Environmental & Occupational Health; Tropical Medicine GA RB019 UT WOS:A1995RB01900014 PM 7771612 ER PT J AU WU, SJL HAYES, CG DUBOIS, DR WINDHEUSER, MG KANG, YH WATTS, DM SIECKMANN, DG AF WU, SJL HAYES, CG DUBOIS, DR WINDHEUSER, MG KANG, YH WATTS, DM SIECKMANN, DG TI EVALUATION OF THE SEVERE COMBINED IMMUNODEFICIENT (SCID) MOUSE AS AN ANIMAL-MODEL FOR DENGUE VIRAL-INFECTION SO AMERICAN JOURNAL OF TROPICAL MEDICINE AND HYGIENE LA English DT Article ID VIRUS-INFECTION; MONONUCLEAR PHAGOCYTES; MONOCLONAL-ANTIBODIES; NK CELLS; MICE; BLOOD; INVIVO; ENHANCEMENT; LEUKOCYTES; SYSTEM AB Severe combined immunodeficient (SCID) mice reconstituted with human peripheral blood lymphocytes (hu-PBL) were evaluated as an animal model for demonstrating dengue (DEN) viral infection. Reconstituted mice (hu-PBL-SCID) that demonstrated successful engraftment by the presence of serum titers of human immunoglobulin (Ig) were inoculated intraperitoneally with DEN virus serotype 1 (DEN-1). Serial blood samples were taken postinoculation and assayed for virus in C6/36 cells. The identity of all viral isolates was confirmed by an immunofluorescence antibody assay using DEN-1 monoclonal antibody. A total of six experiments were performed using different procedures of reconstitution and infection, and in three of these experiments, DEN-1 virus was recovered from the hu-PBL-SCID mice. In the first successful experiment, DEN-1 virus was recovered on postinoculation day (PID) 24 from blood, spleen, thymus, and lung tissues of one of eight hu-PBL-SCID mice. A second group of eight hu-PBL-SCID mice were inoculated with human monocytes infected in vitro with DEN-1 virus. Virus was recovered from the blood of mice between PID 15 and 23, and from lung tissue of one of these mice. In a third experiment, seven SCID mice were treated initially with anti-asialo GM1 antibody to eliminate natural killer cells, and then were injected simultaneously with a mixture of hu-PBL and DEN-1 virus. Virus was demonstrated in the blood of one mouse on PID 38, and in another mouse on PID 8, 12, 20, 24, and 36. Virus was recovered from lung tissue of the first mouse on PID 85 and from all tissues tested from the second mouse on PID 50. Tissues from the second mouse also were tested by immunostaining, and DEN viral antigen was detected in liver, spleen, kidney and lune sections; human B cells were detected in spleen and lung tissues, and human T cells were detected in lung and brain. The DEN virus-positive mice from all three experiments had been reconstituted with lymphoid cells from the same human donor. None of the 16 nonreconstituted SCID mice inoculated with DEN-1 virus as controls for these three experiments had detectable virus in any tissues. Attempts to detect evidence of DEN-1 virus infection of hu-PBL-SCID mice in three additional experiments using other human donors were unsuccessful. Data derived from these experiments show that hu-PBL-SCID mice can be infected with DEN-1 virus, but the frequency of infection was low. Further studies need to be conducted to better define and control the factors responsible for susceptibility to DEN virus infection in the hu-PBL-SCID mouse before it will be useful as a laboratory model. C1 WALTER REED ARMY INST RES, DEPT BIOL RES, WASHINGTON, DC USA. USN, MED RES INST, DIV PATHOBIOL, BETHESDA, MD 20889 USA. RP WU, SJL (reprint author), USN, MED RES INST, DEPT INFECT DIS, CODE 4121, 8901 WISCONSIN AVE, BETHESDA, MD 20889 USA. NR 34 TC 49 Z9 53 U1 0 U2 1 PU AMER SOC TROP MED & HYGIENE PI MCLEAN PA 8000 WESTPARK DR, STE 130, MCLEAN, VA 22101 USA SN 0002-9637 J9 AM J TROP MED HYG JI Am. J. Trop. Med. Hyg. PD MAY PY 1995 VL 52 IS 5 BP 468 EP 476 PG 9 WC Public, Environmental & Occupational Health; Tropical Medicine SC Public, Environmental & Occupational Health; Tropical Medicine GA RB019 UT WOS:A1995RB01900018 PM 7771614 ER PT J AU KELSO, JM JONES, RT TELLEZ, R YUNGINGER, JW AF KELSO, JM JONES, RT TELLEZ, R YUNGINGER, JW TI ORAL ALLERGY SYNDROME SUCCESSFULLY TREATED WITH POLLEN IMMUNOTHERAPY SO ANNALS OF ALLERGY ASTHMA & IMMUNOLOGY LA English DT Article ID BIRCH POLLEN; FOOD HYPERSENSITIVITY; CROSS-REACTIVITY; IGE ANTIBODIES; SENSITIVITY; CELERY; VEGETABLES; POLLINOSIS; PROFILIN; FRUITS AB Background: Some patients with allergic rhinitis have oral allergic reactions to fresh fruits and vegetables This phenomenon has been termed ''oral allergy syndrome'' and is proposed to be due to cross-reacting allergens in the foods and pollens. Methods: We report a patient with allergic rhinitis and oral allergy syndrome treated with pollen immunotherapy. Prior to immunotherapy, eating any fresh fruit or vegetable caused immediate itching and swelling of his tongue and throat. Prick skin test titration with pollens and foods was performed before and after 13 months of immunotherapy. Specific IgE immunoassay was performed with the same extracts on serum obtained before and after 7 and 13 months of immunotherapy. IgE immunoblots were performed on the same extracts separated by polyacrylamide gel electrophoresis using sera from the same time periods. Results: After 1 year on immunotherapy, the patient's allergic rhinitis symptoms resolved. and ha was able to eat fresh fruits and vegetables without reaction. Skin testing and specific IgE immunoassay demonstrated a marked reduction in sensitivity to not only the pollens but the foods as well. Immunoblots revealed that the intensity of IgE binding to most components of the extracts, some common to pollens and foods, declined during immunotherapy. Conclusions: These results support the notion that oral allergy syndrome is due to cross-reacting allergens in foods and pollens and may be amenable to treatment with pollen immunotherapy. C1 USN,DEPT INTERNAL MED,DIV ALLERGY,SAN DIEGO,CA 92152. MAYO CLIN & MAYO FDN,ALLERG DIS RES LAB,ROCHESTER,MN 55905. NR 19 TC 55 Z9 56 U1 2 U2 2 PU AMER COLL ALLERGY ASTHMA IMMUNOLOGY PI ARLINGTON HTS PA 85 WEST ALGONQUIN RD SUITE 550, ARLINGTON HTS, IL 60005 SN 1081-1206 J9 ANN ALLERG ASTHMA IM JI Ann. Allergy Asthma Immunol. PD MAY PY 1995 VL 74 IS 5 BP 391 EP 396 PG 6 WC Allergy; Immunology SC Allergy; Immunology GA QZ039 UT WOS:A1995QZ03900005 PM 7749969 ER PT J AU ABAD, H JONKER, BT YU, WY STOLTZ, S PETROU, A AF ABAD, H JONKER, BT YU, WY STOLTZ, S PETROU, A TI N-TYPE DOPING OF THE DILUTED MAGNETIC SEMICONDUCTOR ZN1-XMNXSE SO APPLIED PHYSICS LETTERS LA English DT Article ID MOLECULAR-BEAM EPITAXY; ZNSE; GROWTH; LAYERS C1 SUNY BUFFALO,DEPT PHYS,BUFFALO,NY 14260. SUNY BUFFALO,CTR ELECTR & ELECTROOPT MAT,BUFFALO,NY 14260. RP ABAD, H (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 17 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 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD MAY 1 PY 1995 VL 66 IS 18 BP 2412 EP 2414 DI 10.1063/1.113957 PG 3 WC Physics, Applied SC Physics GA QV249 UT WOS:A1995QV24900036 ER PT J AU MOSIERBOSS, PA LIEBERMAN, SH NEWBERY, R AF MOSIERBOSS, PA LIEBERMAN, SH NEWBERY, R TI FLUORESCENCE REJECTION IN RAMAN-SPECTROSCOPY BY SHIFTED-SPECTRA, EDGE-DETECTION, AND FFT FILTERING TECHNIQUES SO APPLIED SPECTROSCOPY LA English DT Article DE RAMAN SPECTROSCOPY; FLUORESCENCE REJECTION; EDGE DETECTION; FOURIER DOMAIN FILTERING ID FOURIER SELF-DECONVOLUTION; LUMINESCENCE AB The use of shifted-spectra, first-derivative spectroscopy (or edge detection), and fast Fourier transform filtering techniques for fluorescence rejection in Raman spectra is demonstrated. These techniques take advantage of the fact that Raman signals are very narrow in comparison to fluorescence bands in order to discriminate between the two. None of these techniques require modification of existing instrumentation. Fast Fourier transform filtering and deconvolution techniques also provide a means of improving spectral resolution and the signal-to-noise ratio. RP MOSIERBOSS, PA (reprint author), USN COMMAND,CTR CONTROL & OCEAN SURVEILLANCE,RDT & E DIV,SAN DIEGO,CA 92152, USA. NR 25 TC 112 Z9 114 U1 2 U2 17 PU SOC APPLIED SPECTROSCOPY PI FREDERICK PA PO BOX 1438, FREDERICK, MD 21701 SN 0003-7028 J9 APPL SPECTROSC JI Appl. Spectrosc. PD MAY PY 1995 VL 49 IS 5 BP 630 EP 638 DI 10.1366/0003702953964039 PG 9 WC Instruments & Instrumentation; Spectroscopy SC Instruments & Instrumentation; Spectroscopy GA QZ569 UT WOS:A1995QZ56900013 ER PT J AU THE, LS LEISING, MD CLAYTON, DD JOHNSON, WN KINZER, RL KURFESS, JD STRICKMAN, MS JUNG, GV GRABELSKY, DA PURCELL, WR ULMER, MP AF THE, LS LEISING, MD CLAYTON, DD JOHNSON, WN KINZER, RL KURFESS, JD STRICKMAN, MS JUNG, GV GRABELSKY, DA PURCELL, WR ULMER, MP TI CGR0/OSSE OBSERVATIONS OF THE CASSIOPEIA-A SUPERNOVA REMNANT SO ASTROPHYSICAL JOURNAL LA English DT Article DE GAMMA RAYS, OBSERVATIONS; ISM, INDIVIDUAL (CASSIOPEIA A); NUCLEAR REACTIONS, NUCLEOSYNTHESIS, ABUNDANCES; SUPERNOVA REMNANTS ID SCINTILLATION SPECTROMETER EXPERIMENT; RAY-LINE EMISSION; X-RAY; EXPLOSIVE NUCLEOSYNTHESIS; NOVA REMNANTS; LIGHT CURVES; I SUPERNOVAE; SN-1987A; TI-44; MODELS AB Cassipeia A, the youngest known supernova remnant in the Galaxy and a strong radio and X-ray source, was observed by OSSE 1992 July 16-August 6. Its close distance (similar to 3 kpc) and its young age (similar to 300 yr) make Cas A the best candidate among known supernova remnants for detecting Ti-44 gamma-ray lines. We find no evidence of emission at 67.9 keV, 78.4 keV, or 1.157 MeV, the three strongest Ti-44 decay lines. From simultaneous fits to the three lines our 99% confidence upper limit to the flux in each line is 5.5 x 10(-5) gamma cm(-2) s(-1). We also report upper limits for the 4.44 MeV C-12 nuclear de-excitation line, which could be produced by interactions of accelerated particles in the supernova remnant, and for the hard X-ray continuum. C1 USN,RES LAB,EO HULBURT CTR SPACE RES,WASHINGTON,DC 20375. UNIV SPACE RES ASSOCIATES,WASHINGTON,DC 20375. NORTHWESTERN UNIV,DEPT PHYS & ASTRON,EVANSTON,IL 60208. RP THE, LS (reprint author), CLEMSON UNIV,DEPT PHYS & ASTRON,CLEMSON,SC 29634, USA. RI Johnson, Neil/G-3309-2014 NR 54 TC 18 Z9 18 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 1 PY 1995 VL 444 IS 1 BP 244 EP 250 DI 10.1086/175600 PN 1 PG 7 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QV080 UT WOS:A1995QV08000023 ER PT J AU MARISKA, JT AF MARISKA, JT TI FLARE PLASMA DYNAMICS OBSERVED WITH THE YOHKOH-BRAGG CRYSTAL SPECTROMETER .3. SPECTRAL SIGNATURES OF ELECTRON-BEAM-HEATED ATMOSPHERES SO ASTROPHYSICAL JOURNAL LA English DT Article DE PLASMAS; SUN, FLARES; SUN, PARTICLE EMISSION; SUN, X-RAYS, GAMMA RAYS ID LOOP RADIATIVE HYDRODYNAMICS; SOLAR-FLARES; X-RAY; NUMERICAL SIMULATIONS; IMPULSIVE PHASE; CHROMOSPHERE; EVAPORATION; DIAGNOSTICS; EMISSION; MODEL AB Using numerical simulations of an electron-beam-heated solar flare, we investigate the observational consequences of variations in the electron beam total energy flux and the low-energy cutoff value for models with both low and high initial densities. To do this we use the evolution of the physical parameters of the simulated flares to synthesize the time evolution of the spectrum in the wavelength region surrounding the Ca XIX resonance line. These spectra are then summed over a 9 s time interval to simulate typical spectra from the Yohkoh Bragg crystal spectrometer and the first three moments are computed for comparison with observational results. This comparison shows that no single low or high initial density model satisfies the observed average behavior of the Ca XIX resonance line. Low initial density models produce too large a blueshift velocity, while high initial density models have lines that are too narrow. Comparison of these models with the Yohkoh data suggests that the key problem for models of the impulsive phase of a solar flare is producing significant amounts of stationary hot plasma early in the flare. RP MARISKA, JT (reprint author), USN,RES LAB,EO HULBURT CTR SPACE RES,CODE 7673,WASHINGTON,DC 20375, USA. NR 24 TC 5 Z9 5 U1 0 U2 0 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD MAY 1 PY 1995 VL 444 IS 1 BP 478 EP 486 PN 1 PG 9 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QV080 UT WOS:A1995QV08000045 ER PT J AU BHATIA, AK DOSCHEK, GA AF BHATIA, AK DOSCHEK, GA TI ATOMIC DATA AND SPECTRAL-LINE INTENSITIES FOR FE-X SO ATOMIC DATA AND NUCLEAR DATA TABLES LA English DT Article ID CROSS-SECTIONS; EXCITATION; IONS; IRON AB Electron impact collision strengths and spontaneous radiative decay rates are calculated for the important astrophysical ion Fe X. The data pertain to the 54 levels of the configurations 3s(2)3p(5), (3)s(3)P(6) 3s(2)3p(4)3d, and 3s3p(5)3d. Collision strengths are calculated at five incident electron energies: 9.0, 18.0, 27.0, 36.0, and 45.0 Ry. Relative spectral line intensities are calculated for all astrophysically important transitions. These are obtained by computing the excitation rate coefficients( cm(3)s(-1)), i.e., the collision strengths integrated over a Maxwellian electron energy distribution, and then solving the equations of detailed balance for the populations of the 54 energy levels, assuming a collisional excitation model and an electron temperature of 1.0 X 10(6) K. This temperature is typical for Fe X when formed in. equilibrium by collisional ionization and recombination. Using the excitation rate coefficients and the radiative decay rates, level populations are computed for several electron densities and are given in this paper. We also investigate the effects of proton excitation and solar radiative excitation on the level populations and line intensities. Finally, the calculated relative line intensities are compared with experimental solar intensities where available, and two good electron-density-sensitive line ratios are discussed. One result of the comparison is the identification of four unidentified solar spectral lines as Fe X transitions: 220.86, 226.32, 238.71, and 324.71 Angstrom. (C) 1995 Academic Press, Inc. C1 USN,RES LAB,EO HULBURT CTR SPACE RES,WASHINGTON,DC 20375. RP BHATIA, AK (reprint author), GODDARD SPACE FLIGHT CTR,ASTRON & SOLAR PHYS LAB,GREENBELT,MD 20771, USA. NR 21 TC 66 Z9 66 U1 0 U2 0 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 SN 0092-640X J9 ATOM DATA NUCL DATA JI Atom. Data Nucl. Data Tables PD MAY PY 1995 VL 60 IS 1 BP 97 EP 143 DI 10.1006/adnd.1995.1005 PG 47 WC Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Physics GA QZ246 UT WOS:A1995QZ24600003 ER PT J AU BHATIA, AK DOSCHEK, GA AF BHATIA, AK DOSCHEK, GA TI ATOMIC DATA AND SPECTRAL-LINE INTENSITIES FOR C-LIKE MG-VII SO ATOMIC DATA AND NUCLEAR DATA TABLES LA English DT Article ID OPTICALLY ALLOWED TRANSITIONS; CROSS-SECTIONS; EXCITATION; IONS AB Electron impact collision strengths and spontaneous radiative decay rates are calculated for the C-like ion Mg VII. The data pertain to the 46 levels of the configurations 2s(2)2p(2), 2s2p(3), 2p(4), 2s(2)2p3S, 2s(2)2p3p, and 2s(2)2p3d, Collision strengths are calculated at three incident electron energies: 12.0, 24.0, and 36.0 Ry. Spectral line intensities are calculated for all transitions with intensities within two orders of magnitude of the most intense Mg VII line. These are obtained by computing the excitation rate coefficients (cm(3) s(-1)), i.e., the collision strengths integrated over a Maxwellian electron distribution, and then solving the equations of detailed balance for the populations of the 46 energy levels, assuming a collisional excitation model and an electron temperature of 6.31 X 10(5) K. This temperature is typical for Mg VII in solar and some other astrophysical plasmas. Using the excitation rate coefficients and the radiative decay rates, level populations are computed for several electron densities and are also given in this paper. (C) 1995 Academic Press. Inc. C1 USN,RES LAB,EO HULBURT CTR SPACE RES,WASHINGTON,DC 20375. RP BHATIA, AK (reprint author), GODDARD SPACE FLIGHT CTR,ASTRON & SOLAR PHYS LAB,GREENBELT,MD 20771, USA. NR 13 TC 19 Z9 19 U1 0 U2 0 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 SN 0092-640X J9 ATOM DATA NUCL DATA JI Atom. Data Nucl. Data Tables PD MAY PY 1995 VL 60 IS 1 BP 145 EP 173 DI 10.1006/adnd.1995.1006 PG 29 WC Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Physics GA QZ246 UT WOS:A1995QZ24600004 ER PT J AU BAILEY, DA GILLERAN, LG MERCHANT, PG AF BAILEY, DA GILLERAN, LG MERCHANT, PG TI WAIVERS FOR DISQUALIFYING MEDICAL CONDITIONS IN US NAVAL AVIATION PERSONNEL SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article ID PILOTS AB In the United States Navy, many diagnoses are considered disqualifying for aviation duty, but aircrew may be ''waived'' to return to flight duties after resolution of the disease or appropriate treatment of the condition. Personnel with waivers are usually subject to more frequent physical examinations and/or special diagnostic procedures. Although the Naval Aerospace and Operational Medical Institute promulgates written aeromedical guidelines as to which diseases may be waived and which may not, waivers are granted on a case-by-case basis considering not only the diagnosis, but the age, experience, and type of aviation duty of the individual in question. This study was undertaken to determine which conditions were most and least likely to be waived. We reviewed all records of aviators entered into the Naval Aviation Medical Data Retrieval System who had been diagnosed with a condition considered disqualifying for aviation duty, totaling over 39,000 records. cases were stratified by diagnosis and aviation duty, and the percentage waived was calculated for major diagnostic groups. Among designated aviation personnel, approximately 68% of all aviators with a disqualifying diagnosis were recommended for a waiver. Otolaryngologic, musculoskeletal, and cardiovascular disorders accounted for nearly 50% of diagnoses in personnel recommended for a waiver. Fear of flying, personality disorders, and adjustment disorders were the three diagnoses least likely to be granted a waiver. The most frequently occurring disqualifying diagnoses were allergic rhinitis, obesity, disorders of refraction and accommodation, urolithiasis, and alcohol dependence. RP BAILEY, DA (reprint author), USN,AEROSP & OPERAT MED INST,NAS,NAMI,CODE 32R,220 HOVEY RD,PENSACOLA,FL 32508, USA. NR 15 TC 9 Z9 9 U1 0 U2 0 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD MAY PY 1995 VL 66 IS 5 BP 401 EP 407 PG 7 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA QX391 UT WOS:A1995QX39100001 PM 7619031 ER EF