FN Thomson Reuters Web of Science™ VR 1.0 PT J AU KRAMER, AF TREJO, LJ HUMPHREY, D AF KRAMER, AF TREJO, LJ HUMPHREY, D TI ASSESSMENT OF MENTAL WORKLOAD WITH TASK-IRRELEVANT AUDITORY PROBES SO BIOLOGICAL PSYCHOLOGY LA English DT Article DE ERP; MENTAL WORKLOAD; ATTENTION CAPTURE; IRRELEVANT PROBE TECHNIQUE ID ABRUPT VISUAL ONSETS; SELECTIVE ATTENTION; MISMATCH NEGATIVITY; EVOKED-POTENTIALS; BRAIN POTENTIALS; PERFORMANCE; RECIPROCITY; ALLOCATION; ERP AB A study was performed to examine the utility of an ERP-based irrelevant probe technique for the assessment of variations in mental workload. Ten highly trained Navy radar operators performed a simulated radar-monitoring task which varied in the density and type of targets to be detected and identified. This task was performed in the presence of a series of irrelevant auditory probes which the radar operators were instructed to ignore. Prior to performing the radar-monitoring task the subjects performed a block of auditory detection trials in which they were asked to respond to the occurrence of one of two low probability tones and ignore the other low probability tone along with a higher probability standard tone. ERPs were recorded from the occurrence of the tones in both the baseline and low and high workload radar-monitoring conditions. The amplitude of the N100, N200, and early and late mismatch negativity (MMN) components decreased from the baseline to the low load radar-monitoring task and again with an increase in the difficulty of the radar-monitoring task. P300 amplitude was sensitive only to the introduction of the radar-monitoring task. These results are interpreted with respect to the phenomenon of attentional capture and suggest that the ERP-based irrelevant-probe technique might prove an effective method for the nonintrusive evaluation of increases in mental workload in complex tasks. C1 USN,CTR PERSONNEL RES & DEV,TRAINING RES DEPT,SAN DIEGO,CA 92152. RP KRAMER, AF (reprint author), UNIV ILLINOIS,BECKMAN INST,405 N MATHEWS AVE,URBANA,IL 61801, USA. NR 30 TC 78 Z9 80 U1 0 U2 5 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0301-0511 J9 BIOL PSYCHOL JI Biol. Psychol. PD MAY PY 1995 VL 40 IS 1-2 BP 83 EP 100 DI 10.1016/0301-0511(95)05108-2 PG 18 WC Psychology, Biological; Behavioral Sciences; Psychology; Psychology, Experimental SC Psychology; Behavioral Sciences GA RB501 UT WOS:A1995RB50100006 PM 7647188 ER PT J AU JOHNSTONE, PAS DEGRAFF, WG MITCHELL, JB AF JOHNSTONE, PAS DEGRAFF, WG MITCHELL, JB TI PROTECTION FROM RADIATION-INDUCED CHROMOSOMAL-ABERRATIONS BY THE NITROXIDE TEMPOL SO CANCER LA English DT Article DE RADIOPROTECTION; NITROXIDE; TEMPOL; CHROMOSOMAL ABERRATION; CYTOGENETICS ID INDUCED CELL DEATH; TOPICAL APPLICATION; INDUCED ALOPECIA; DAMAGE; LYMPHOCYTES; SURVIVAL AB Background. The nitroxide Tempol (4-hydroxy-2,2,6,6-tetramethylpiperidine-1-oxyl) is a stable, free radical that exhibits protection from ionizing radiation damage and from oxidative stress mediated through exposure of cells to superoxide or hydrogen peroxide. Radiation protection has been observed in both in vivo and in vitro models. To understand the mechanism of Tempol-mediated radioprotection better, the production of radiation-induced chromosome aberrations was evaluated. This study analyzed Tempol-mediated radioprotection of human peripheral blood lymphocytes (PBLs). Methods. Peripheral blood lymphocytes were exposed to control (OmM), 10 mM (Tp10), and 50 mM (Tp50) concentrations of Tempol for 20 minutes before irradiation with 0, 150, 300, and 450 cGy. One quarter mi whole blood was cultured in F12 medium and phytohemagglutinin at 37 degrees C for 49, 54, 59, and 64 hours. Colcemide was added to each sample for the last 5 hours before harvest. Cells were harvested, treated with hypotonic solution, and fixed before dropping on cold clean slides. Mitotic indices and frequency of dicentric, ring, and triradial chromosomal aberrations were determined at 1000X magnification for each treatment group at each collection point. Results. Treatment of cells with Tempol alone did not induce the chromosomal aberration frequency above that for unirradiated controls. Radiation dose response curves for total chromosome aberration production revealed radioprotection for Tempol treatment for both 10 and 50 mM exposures. Tempol protection factors (assessed at 0.2 aberrations/cell level) for Tp 10 and Tp 50 were 2.2 and 2.8, respectively. Conclusions. Tempol protects against radiation-induced chromosome aberrations in human PBLs. This finding is consistent with and lends support to previous studies in which Tempol was reported to enhance cell survival and reduce radiation-induced DNA double strand breaks C1 NCI,DIV CANC TREATMENT,RADIAT BIOL BRANCH,BETHESDA,MD 20892. USN,MED CTR,DIV RADIAT ONCOL,SAN DIEGO,CA 92152. NR 19 TC 23 Z9 24 U1 0 U2 3 PU WILEY-LISS PI NEW YORK PA DIV JOHN WILEY & SONS INC 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0008-543X J9 CANCER JI Cancer PD MAY 1 PY 1995 VL 75 IS 9 BP 2323 EP 2327 DI 10.1002/1097-0142(19950501)75:9<2323::AID-CNCR2820750922>3.0.CO;2-2 PG 5 WC Oncology SC Oncology GA QU339 UT WOS:A1995QU33900021 PM 7712443 ER PT J AU WU, RW WU, EM THOMPSON, LH FELTON, JS AF WU, RW WU, EM THOMPSON, LH FELTON, JS TI IDENTIFICATION OF APRT GENE-MUTATIONS INDUCED IN REPAIR-DEFICIENT AND P450-EXPRESSING CHO CELLS BY THE FOOD-RELATED MUTAGEN/CARCINOGEN, PHIP SO CARCINOGENESIS LA English DT Article ID HAMSTER OVARY CELLS; POLYMERASE CHAIN-REACTION; CHINESE-HAMSTER; 2-AMINO-1-METHYL-6-PHENYLIMIDAZO<4,5-B>PYRIDINE PHIP; ENZYMATIC AMPLIFICATION; DEOXYRIBONUCLEIC-ACID; REPETITIVE SEQUENCES; DNA-SEQUENCE; COOKED BEEF; MUTAGENESIS AB We investigated the specific sequence changes produced by the dietary mutagen 2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PhIP) in UV5P3 cells [a Chinese hamster ovary (CHO) cell line]. Sequence analysis of the PhIP-induced mutations in the adenine phosphoribosyltransferase (aprt) gene, which is heterozygous in the UV5P3 cells, can provide insight into the mutagenic mechanism in these repair-deficient cells expressing P4501A2. Two allele-specific 20 mer oligonucleotide primer pairs were used in the polymerase chain reaction and the allele of interest was amplified. Single-base transversions occurred in 31/32 PhIP-induced mutants; of these, 6 were A . T-->T . A, 18 were C . G-->A . T and 6 were G . C-->T . A. Twenty of the 30 changes altered specific amino acid sequences and the other 10 resulted in a stop codon. One mutant had a change from C . G-->G . C at the 3' splice site of intron 4, thereby creating a new AG splice acceptor site. Another mutant had an insertion of T within a run of repeated sequences and resulted in a frameshift mutation. There were three 'hot-spots', two at the 3' end of exon 2 and one at the beginning of exon 3; 6 (19%) mutants showed a change from A . T-->T . A (exon 2, amino acid residue 57), 11 (34%) mutants from C . G-->A . T (exon 2, amino acid residue 62), and 7 (22%) mutants from C . G-->A . T (exon 3, amino acid residue 66). Consequently, 75 % of the mutations were observed at these three sites. In contrast, none of the 20 spontaneous mutants had alterations at these hotspot sites. The mutations induced by PHIP in these repair-deficient CHO cells were unique and specific, and suggest that these sequences, if found in important genes controlling cell replication and survival, may be more susceptible to mutation from these food mutagens than genes not containing these sequences. C1 USN,POSTGRAD SCH,DEPT AERONAUT,MONTEREY,CA 93943. RP WU, RW (reprint author), LAWRENCE LIVERMORE NATL LAB,BIOL & BIOTECHNOL RES PROGRAM,LIVERMORE,CA 94551, USA. FU NCI NIH HHS [CA55861] NR 55 TC 23 Z9 23 U1 0 U2 0 PU OXFORD UNIV PRESS UNITED KINGDOM PI OXFORD PA WALTON ST JOURNALS DEPT, OXFORD, ENGLAND OX2 6DP SN 0143-3334 J9 CARCINOGENESIS JI Carcinogenesis PD MAY PY 1995 VL 16 IS 5 BP 1207 EP 1213 DI 10.1093/carcin/16.5.1207 PG 7 WC Oncology SC Oncology GA QZ456 UT WOS:A1995QZ45600034 PM 7767987 ER PT J AU VALENT, PJ AF VALENT, PJ TI DREDGING - THE TIME IS NOW SO CIVIL ENGINEERING LA English DT Letter RP VALENT, PJ (reprint author), USN,RES LAB,BAY ST LOUIS,MS, USA. NR 0 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 0885-7024 J9 CIVIL ENG JI Civil Eng. PD MAY PY 1995 VL 65 IS 5 BP 40 EP 41 PG 2 WC Engineering, Civil SC Engineering GA QV717 UT WOS:A1995QV71700005 ER PT J AU HARLAN, DM ABE, R LEE, KP JUNE, CH AF HARLAN, DM ABE, R LEE, KP JUNE, CH TI POTENTIAL ROLES OF THE B7 AND CD28 RECEPTOR FAMILIES IN AUTOIMMUNITY AND IMMUNE EVASION SO CLINICAL IMMUNOLOGY AND IMMUNOPATHOLOGY LA English DT Review ID T-CELL ACTIVATION; MAJOR HISTOCOMPATIBILITY COMPLEX; ANTIGEN-PRESENTING CELLS; CTLA-4 COUNTER-RECEPTOR; ACCESSORY MOLECULE CD28; HUMAN LYMPHOCYTES-T; CLASS-II; HIV-INFECTION; IMMUNOGLOBULIN SUPERFAMILY; INTERLEUKIN-2 PRODUCTION AB Recognition of self major histocompatability complex (MHC) presented antigen (MHC:Ag) by the T cell antigen receptor (TCR) is by itself not sufficient to induce T cell proliferation. Rather, to be fully activated T cells require both a TCR-generated signal and a ''co-stimulatory'' signal. This important costimulatory signal is not completely understood. Recent evidence suggests that this costimulatory signal is generated by the interaction of the T cell CD28 receptor with the B7 counterreceptor found on antigen-presenting cells. Regulation of costimulation may well prove to be more complex than was previously imagined based on the discovery that CD28 and E7 are each members of larger gene families. The present review highlights recent advances in the understanding of the CD28 and B7 receptor families with an emphasis on controversies in the field. Certain forms of immunopathology that might result from the aberrant regulation of CD28 and/or B7 expression are also discussed. (C) 1995 Academic Press, Inc. C1 UNIFORMED SERV UNIV HLTH SCI,DEPT MED,BETHESDA,MD 20814. RP HARLAN, DM (reprint author), USN,MED RES INST,IMMUNE CELL BIOL PROGRAM,BETHESDA,MD 20889, USA. NR 138 TC 44 Z9 44 U1 0 U2 4 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 SN 0090-1229 J9 CLIN IMMUNOL IMMUNOP JI Clin. Immunol. Immunopathol. PD MAY PY 1995 VL 75 IS 2 BP 99 EP 111 DI 10.1006/clin.1995.1058 PG 13 WC Immunology; Pathology SC Immunology; Pathology GA QT379 UT WOS:A1995QT37900001 PM 7535672 ER PT J AU RENEKER, MH AF RENEKER, MH TI ACADEMIC-LIBRARIES - THE DIMENSIONS OF THEIR EFFECTIVENESS - MCDONALD,JA, MICIKAS,LB SO COLLEGE & RESEARCH LIBRARIES LA English DT Book Review RP RENEKER, MH (reprint author), USN,POSTGRAD SCH,MONTEREY,CA 93943, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU ASSN COLL RES LIBR PI CHICAGO PA 50 E HURON ST, CHICAGO, IL 60611 SN 0010-0870 J9 COLL RES LIBR JI Coll. Res. Libr. PD MAY PY 1995 VL 56 IS 3 BP 290 EP 292 PG 3 WC Information Science & Library Science SC Information Science & Library Science GA QX806 UT WOS:A1995QX80600014 ER PT J AU SKINNER, AJ BROUGHTON, JQ AF SKINNER, AJ BROUGHTON, JQ TI GENERATING OPTIMAL STRUCTURAL DATABASES FOR DEVELOPING ATOMISTIC POTENTIALS SO COMPUTATIONAL MATERIALS SCIENCE LA English DT Article ID REVERSE MONTE-CARLO; SILICON; SIMULATION AB Constructing structural databases that span many different local environments and atomic coordinations is important in the development of realistic atomistic potentials. Using reverse Monte Carlo techniques ''optimal'' structural databases may be generated that at a fixed density have both near uniform distance and angle distributions. For a database with a fixed to-be-fit distance range, the success of the reverse Monte Carlo scheme used here is determined by the minimum hard-sphere approach distance r(min) and the basis-point number density. At the equilibrium density for diamond silicon near uniform distance and angle distributions can only be generated for small values of r(min) for which high-energy structures are included. However, for lower densities near uniform distributions can be obtained for values of r(min) more typical of reality as basis-points have a larger volume of configuration space to explore. The Limits imposed by using hard-sphere constraints are discussed with respect to the classical theory of liquids. C1 USN,RES LAB,COMPLEX SYST THEORY BRANCH,WASHINGTON,DC 20375. NR 14 TC 4 Z9 4 U1 1 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0927-0256 J9 COMP MATER SCI JI Comput. Mater. Sci. PD MAY PY 1995 VL 4 IS 1 BP 1 EP 9 DI 10.1016/0927-0256(94)00012-2 PG 9 WC Materials Science, Multidisciplinary SC Materials Science GA QZ215 UT WOS:A1995QZ21500001 ER PT J AU LEWIS, T AF LEWIS, T TI ARE TELEPHONE COMPANIES PASSE SO COMPUTER LA English DT Article RP LEWIS, T (reprint author), USN,POSTGRAD 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 MAY PY 1995 VL 28 IS 5 BP 8 EP 8 DI 10.1109/2.410133 PG 1 WC Computer Science, Hardware & Architecture; Computer Science, Software Engineering SC Computer Science GA QW532 UT WOS:A1995QW53200005 ER PT J AU FLIPPEN, LD AF FLIPPEN, LD TI INTERPOLATION-BASED CONDENSATION OF ALGEBRAIC SEMIDISCRETE MODELS WITH FREQUENCY-RESPONSE APPLICATION SO COMPUTERS & MATHEMATICS WITH APPLICATIONS LA English DT Article DE CONDENSATION; DEGREE-OF-FREEDOM; SEMIDISCRETE; INTERPOLATION; FREQUENCY RESPONSE; FREQUENCY WINDOW ID RESONANCE CHARACTERISTICS; CONNECTED SUBSYSTEMS; CONFIGURATIONS AB Condensation model reduction theory, a method of degree-of-freedom-elimination for semi-discrete system models with response-prediction fidelity in the retained degrees-of-freedom (DOF), is applied to algebraic semi-discrete models. The condensation process makes use of an interpolation over a user-chosen subset, denoted as a ''window,'' of the set of continuous-independent-variable values. The window's ''size'' and ''location,'' as well as the accuracy of the method within the window, are hence controllable by the user. (There is a computational-cost versus accuracy/window-size tradeoff for a given DOF reduction, as would be expected.) One target of this capability is the DOF reduction of spatially-discrete, continuous-time-transformed (Fourier, Laplace, etc.) linear system models, for which the resulting semi-discrete model has frequency as the continuous independent variable. The window would then correspond to a selected frequency range, (a region of the complex frequency plane in the most general case). Another target of this capability is the DOF reduction of nonlinear, path-independent static or quasistatic models, for which the window corresponds to a region of the reduced-DOF-model solution space itself. As a demonstration, the method is applied to the frequency response of a non-periodic linear elastic laminate over a rectangular window in the complex frequency plane. It is seen that the frequency-response predicted by the reduced-DOF model at each of various values within the window, as well as the eigenvalues predicted by the reduced-DOF model within the window, agree well with the corresponding predictions of the original, full-DOF model. RP FLIPPEN, LD (reprint author), USN,RES LAB,CODE 6380,4555 OVERLOOK AVE SW,WASHINGTON,DC 20375, USA. NR 17 TC 4 Z9 4 U1 1 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0898-1221 J9 COMPUT MATH APPL JI Comput. Math. Appl. PD MAY PY 1995 VL 29 IS 9 BP 39 EP 52 DI 10.1016/0898-1221(95)00036-X PG 14 WC Computer Science, Interdisciplinary Applications; Mathematics, Applied SC Computer Science; Mathematics GA QR345 UT WOS:A1995QR34500003 ER PT J AU RABINOVICI, R NEVILLE, LF RUDOLPH, AS FEUERSTEIN, G AF RABINOVICI, R NEVILLE, LF RUDOLPH, AS FEUERSTEIN, G TI HEMOGLOBIN-BASED OXYGEN-CARRYING RESUSCITATION FLUIDS SO CRITICAL CARE MEDICINE LA English DT Editorial Material DE HEMORRHAGIC SHOCK; HEMOGLOBIN; BLOOD TRANSFUSION; RESUSCITATION ID LIPOSOME-ENCAPSULATED HEMOGLOBIN; POLYMERIZED PYRIDOXYLATED HEMOGLOBIN; CROSS-LINKED HEMOGLOBIN; RED-CELL SUBSTITUTE; BLOOD SUBSTITUTE; BIOLOGICAL RESPONSES; HEMORRHAGIC-SHOCK; COMPONENTS; STORAGE; SAFETY C1 JEFFERSON MED COLL,PHILADELPHIA,PA. USN,RES LAB,CTR BIOMOLEC SCI & ENGN,WASHINGTON,DC 20375. RP RABINOVICI, R (reprint author), SMITHKLINE BEECHAM PHARMACEUT,CARDIOVASC PHARMACOL,709 SWEDELAND RD,KING OF PRUSSIA,PA 19406, USA. NR 39 TC 17 Z9 18 U1 0 U2 0 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0090-3493 J9 CRIT CARE MED JI Crit. Care Med. PD MAY PY 1995 VL 23 IS 5 BP 801 EP 804 DI 10.1097/00003246-199505000-00004 PG 4 WC Critical Care Medicine SC General & Internal Medicine GA QX807 UT WOS:A1995QX80700004 PM 7736735 ER PT J AU MUNZIG, NC AF MUNZIG, NC TI THE FIRST STEPS IN IMPLEMENTING CONTINUOUS RENAL REPLACEMENT THERAPY AT THE CRITICAL CARE BEDSIDE SO DIALYSIS & TRANSPLANTATION LA English DT Article AB The premise of this article embraces two aspects of the American Nephrology Nurses Association (ANNA) philosophy: 1) interdisciplinary communication and cooperation are essential to the achievement of the highest attainable level of patient care, and 2) assisting the nursing generalist to achieve an optimum level of functioning within the field of nephrology through sound educational programs is important.(1) Utilizing this philosophy, a method was developed to smoothly implement a new form of continuos renal replacement therapy (CRRT) called continuous veno-venous hemofiltration/dialysis (CVVH/D), a pump-assisted procedure using a dual-lumen venous access. RP MUNZIG, NC (reprint author), USN,MED CTR,DEPT INTERNAL MED,DIV NEPHROL,SAN DIEGO,CA 92132, USA. NR 0 TC 1 Z9 1 U1 1 U2 1 PU CREATIVE AGE PUBL PI VAN NUYS PA 7628 DENSMORE AVE, VAN NUYS, CA 91406-2088 SN 0090-2934 J9 DIALYSIS TRANSPLANT JI Dial. Transplant. PD MAY PY 1995 VL 24 IS 5 BP 239 EP 242 PG 4 WC Engineering, Biomedical; Transplantation; Urology & Nephrology SC Engineering; Transplantation; Urology & Nephrology GA QU576 UT WOS:A1995QU57600004 ER PT J AU SHIFLER, DA MORAN, PJ KRUGER, J AF SHIFLER, DA MORAN, PJ KRUGER, J TI THE PASSIVE BEHAVIOR OF 304-STAINLESS-STEEL IN PC-H2O AND DME-H2O MIXTURES SO ELECTROCHIMICA ACTA LA English DT Article DE PASSIVITY; BREAKDOWN; ORGANIC-WATER MIXTURES; NONAQUEOUS SOLVENTS; 304 STAINLESS STEEL; DIMETHOXYETHANE; PROPYLENE CARBONATE ID ANHYDROUS PROPYLENE CARBONATE; ONLINE MS; ELECTROCHEMICAL-BEHAVIOR; LITHIUM CELLS; WATER; ELECTROLYTES; PLATINUM; INSITU; IRON; RADIOTRACER AB The passivation and breakdown behavior of 304 stainless steel in propylene carbonate (PC) or dimethoxyethane (DME) mixtures with water and containing 0.5 M LiAsF6 were studied. The air-formed film of 304 stainless steel provides a good passive film that resists breakdown. No pitting was observed in either PC-H2O-0.5 M LiAsF6 mixtures or mixed DME-H2O-0.5 M LiAsF6 solutions if the polarizations were conducted below the oxidation potential [1800 mV (sce)] of the hexafluoroarsenate electrolyte. It is apparent that even small amounts of water were sufficient to stabilize the passive film on stainless steel through a probable oxide-oxyhydroxide formation. Fitting of the 304 stainless steel was observed in both mixed organic-water solutions at potentials above the oxidation potential of AsF6- because of the lack of passivating mechanisms such as salt film formation, electropolymerization, or oxide-oxyhydroxide formation. C1 USN ACAD,DEPT ENGN MECH,ANNAPOLIS,MD 21402. RP SHIFLER, DA (reprint author), JOHNS HOPKINS UNIV,DEPT MAT SCI & ENGN,BALTIMORE,MD 21218, USA. NR 38 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 0013-4686 J9 ELECTROCHIM ACTA JI Electrochim. Acta PD MAY PY 1995 VL 40 IS 7 BP 897 EP 905 DI 10.1016/0013-4686(94)00353-3 PG 9 WC Electrochemistry SC Electrochemistry GA QZ838 UT WOS:A1995QZ83800015 ER PT J AU PANDE, SG HARDY, DR AF PANDE, SG HARDY, DR TI AN IN-DEPTH EVALUATION OF COMBUSTION PERFORMANCE PREDICTORS OF AVIATION FUELS SOOTING TENDENCIES SO ENERGY & FUELS LA English DT Article ID GAS-TURBINE COMBUSTORS; MOLECULAR-STRUCTURE; FLAME TEMPERATURE; DIFFUSION FLAMES AB The capabilities of combustion performance predictors to reliably predict the sooting tendencies of aviation fuels in jet combustors were evaluated. The test matrix included two primary fuel sets which were representative of current and future aviation fuels and combustor data, which consisted of radiation and soot data from two different combustors at specific levels of operation. Four of the predictors evaluated were based on a single parameter, viz., three current predictors (smoke point, hydrogen content, and total aromatics content), and one new predictor, Shell's Premixed Burner Number. The remaining predictors, which were based on more than one parameter, include Rosfjord's correlation, Chin-Lefebvre's correlation, a smoke point-hydrogen content combination predictor, and, in addition, three new trial predictors, of which two were based on composition and one on a combination of differentiated aromatics content and smoke point. The results indicate two of the new trial predictors exhibited the best overall predictability. These two trial predictors are monocyclic aromatics important extensions of the parameters employed in Rosfjord's and Chin-Lefebvre's correlations, respectively. The better predictabilities of the two trial predictors are likely attributable to better weighting of the compositional contributions to sooting, particularly at the highest power demand. C1 USN,RES LAB,TECHNOL CTR SAFETY & SURVIVABIL,WASHINGTON,DC 20375. GEOCENTERS INC,FT WASHINGTON,MD 20375. NR 43 TC 7 Z9 7 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0887-0624 J9 ENERG FUEL JI Energy Fuels PD MAY-JUN PY 1995 VL 9 IS 3 BP 448 EP 457 DI 10.1021/ef00051a009 PG 10 WC Energy & Fuels; Engineering, Chemical SC Energy & Fuels; Engineering GA QZ836 UT WOS:A1995QZ83600009 ER PT J AU CHAROENVIT, Y MELLOUK, S SEDEGAH, M TOYOSHIMA, T LEEF, MF DELAVEGA, P BEAUDOIN, RL AIKAWA, M FALLARME, V HOFFMAN, SL AF CHAROENVIT, Y MELLOUK, S SEDEGAH, M TOYOSHIMA, T LEEF, MF DELAVEGA, P BEAUDOIN, RL AIKAWA, M FALLARME, V HOFFMAN, SL TI PLASMODIUM-YOELII - 17-KDA HEPATIC AND ERYTHROCYTIC STAGE PROTEIN IS THE TARGET OF AN INHIBITORY MONOCLONAL-ANTIBODY SO EXPERIMENTAL PARASITOLOGY LA English DT Article DE PLASMODIUM YOELII; MAB ID SPOROZOITE SURFACE PROTEIN-2; CIRCUMSPOROZOITE PROTEIN; LIVER-STAGE; MALARIA; FALCIPARUM; ANTIGEN; BERGHEI; MICE; PROTECTION; SCHIZONTS AB Infected hepatocytes are important targets for malaria vaccines. To identify Plasmodium yoelii proteins expressed in infected hepatocytes, we immunized BALB/c ByJ mice with P. yoelii liver stage schizonts and produced a panel of monoclonal antibodies (Mabs). An IgG1 Mab, navy yoelii liver stage 3 (NYLS3), had the strongest reactivity against liver stage parasites and was selected for further characterization. The Mab does not recognize P. yoelii sporozoites, but recognizes liver stages parasites within 6 hr of invasion of mouse hepatocytes and throughout the hepatic and asexual erythrocytic stages of the parasite life cycle as determined by the immunofluorescent antibody test. This Mab is species-specific, and it reacts with liver stages of P. yoelii but does not react with liver stages of other Plasmodium species. The protein recognized by this Mab is present on the parasitophorous vacuole membrane of infected hepatocytes and erythrocytes as demonstrated by immunoelectron microscopy and has a relative molecular weight of 17 kDa as demonstrated by immunoblot of an extract of infected erythrocytes. It is therefore designated P. yoelii hepatic and erythrocytic stage protein, 17 kDa or PyHEP17. When added to primary cultures of mouse hepatocytes 24 hr after inoculation with P. yoelii sporozoites, when all sporozoites have invaded hepatocytes, NYLS3 eliminates up to 98% of liver-stage parasites. Intravenous injection of NYLS3 into mice delays the onset and reduces the density of blood-stage parasitemia after sporozoite or blood-stage challenge. The P. falciparum and P. vivax homologs of PyHEP17 may therefore be important targets for vaccines designed to attack the hepatic and erythrocytic stages of the parasite life cycle. (C) 1995 Academic Press, Inc. C1 UNIV MARYLAND,SCH MED,CTR VACCINE DEV,BALTIMORE,MD 21201. PAN AMER HLTH ORG,WASHINGTON,DC 20037. CASE WESTERN RESERVE UNIV,INST PATHOL,CLEVELAND,OH 44106. RP CHAROENVIT, Y (reprint author), USN,MED RES INST,MALARIA PROGRAM,12300 WASHINGTON AVE,ROCKVILLE,MD 20852, USA. FU NIAID NIH HHS [AI-10645-22] NR 32 TC 55 Z9 55 U1 0 U2 1 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 SN 0014-4894 J9 EXP PARASITOL JI Exp. Parasitol. PD MAY PY 1995 VL 80 IS 3 BP 419 EP 429 DI 10.1006/expr.1995.1054 PG 11 WC Parasitology SC Parasitology GA QX230 UT WOS:A1995QX23000007 PM 7729477 ER PT J AU BOSSHARD, M AF BOSSHARD, M TI LES 'CORPS CELESTES' - BREHAL,N SO FRENCH REVIEW LA English DT Book Review RP BOSSHARD, M (reprint author), USN ACAD,ANNAPOLIS,MD 21402, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU AMER ASSN TEACH FRENCH PI CHAMPAIGN PA 57 EAST ARMORY AVE, CHAMPAIGN, IL 61820 SN 0016-111X J9 FR REV JI Fr. Rev. PD MAY PY 1995 VL 68 IS 6 BP 1116 EP 1117 PG 2 WC Literature, Romance SC Literature GA QZ630 UT WOS:A1995QZ63000049 ER PT J AU VOGT, PR CRANE, K SUNDVOR, E AF VOGT, PR CRANE, K SUNDVOR, E TI DEEP PLEISTOCENE ICEBERG PLOWMARKS ON THE YERMAK PLATEAU - SIDESCAN AND 3.5-KHZ EVIDENCE FOR THICK CALVING ICE FRONTS AND A POSSIBLE MARINE ICE-SHEET IN THE ARCTIC-OCEAN - REPLY SO GEOLOGY LA English DT Note ID GREENLAND C1 UNIV BERGEN,SEISMOL OBSERV,N-5007 BERGEN,NORWAY. RP VOGT, PR (reprint author), USN,RES LAB,DIV MARINE GEOSCI,WASHINGTON,DC 20375, USA. NR 7 TC 5 Z9 5 U1 2 U2 2 PU GEOLOGICAL SOC AMERICA PI BOULDER PA PO BOX 9140 3300 PENROSE PLACE, BOULDER, CO 80301 SN 0091-7613 J9 GEOLOGY JI Geology PD MAY PY 1995 VL 23 IS 5 BP 477 EP 478 PG 2 WC Geology SC Geology GA QW694 UT WOS:A1995QW69400026 ER PT J AU BOBERG, PR TYLKA, AJ ADAMS, JH FLUCKIGER, EO KOBEL, E AF BOBERG, PR TYLKA, AJ ADAMS, JH FLUCKIGER, EO KOBEL, E TI GEOMAGNETIC TRANSMISSION OF SOLAR ENERGETIC PROTONS DURING THE GEOMAGNETIC DISTURBANCES OF OCTOBER 1989 SO GEOPHYSICAL RESEARCH LETTERS LA English DT Article ID FIELD AB We present orbit-averaged geomagnetic transmission measurements during the large solar energetic particle events of October 1989 using proton data from the NOAA-10 and GOES-7 satellites. We compare the measurements to geomagnetic transmission calculations determined by tracing particle trajectories through the combination of the International Geomagnetic Reference Field (IGRF) model and the 1989 Tsyganenko magnetospheric magnetic field model. We modify the effective 'ring current' parameter in the 1989 Tsyganenko model based on the Dst data. We compare our results to calculations employing only the IGRF and to a parameterization of geomagnetically quiet-time cutoff rigidities derived from Cosmos/lntercosmos observations. Our S-hour orbit-averaged results have similar to 15% accuracy during the October 1989 events. C1 UNIV BERN,INST PHYS,CH-3012 BERN,SWITZERLAND. RP BOBERG, PR (reprint author), USN,RES LAB,EO HULBURT CTR SPACE RES,CODE 7654,WASHINGTON,DC 20375, USA. RI Tylka, Allan/G-9592-2014 NR 22 TC 39 Z9 40 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 MAY 1 PY 1995 VL 22 IS 9 BP 1133 EP 1136 DI 10.1029/95GL00948 PG 4 WC Geosciences, Multidisciplinary SC Geology GA QW543 UT WOS:A1995QW54300033 ER PT J AU HARPER, MJ BAKER, BW NELSON, ME AF HARPER, MJ BAKER, BW NELSON, ME TI INVESTIGATION OF ALTERNATE DROPLET MATERIAL BUBBLE DOSIMETERS SO HEALTH PHYSICS LA English DT Article DE DOSIMETRY; NEUTRON DOSIMETRY; CO-60; NEUTRONS AB Past theoretical research involving superheated liquid droplet (bubble) neutron dosimeters has shown the possibility of using alternate droplet materials in order to give the dosimeter improved temperature stability. Based on that research testing was conducted on HFC-134a, propylene, propane, and hexafluoropropylene to determine (1) the compatibility of the novel superheated liquid material with the detector gel matrix material; (2) the gamma sensitivity of the detector droplets; (3) the response of the dosimeters as a function of neutron energy; and (4) the response of the dosimeters as a function of temperature. These tests were conducted at the Armed Forces Radiobiology Research Institute using a Co-60 source, the Naval Surface Warfare Center using a tandem neutron accelerator, and the United States Naval Academy using an unmoderated Cf-252 source. The response of the alternate droplet material dosimeters was compared to the response of the original Freon 12 droplet material dosimeter. The data indicated that the propane and propylene materials were chemically incompatible with the gel material and that the hexafluoropropylene dosimeters were sensitive to gamma radiation, thus making these types of dosimeters unsuitable. However, the HFC-134a superheated liquid droplets were stable in the gel material, responded uniformly over varying neutron energies, and had a predictable temperature response. C1 APFEL ENTERPRISES INC, NEW HAVEN, CT 06511 USA. RP HARPER, MJ (reprint author), USN ACAD, DEPT NAOME, 590 HOLLOWAY RD, ANNAPOLIS, MD 21402 USA. NR 4 TC 2 Z9 2 U1 0 U2 2 PU LIPPINCOTT WILLIAMS & WILKINS PI PHILADELPHIA PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA SN 0017-9078 EI 1538-5159 J9 HEALTH PHYS JI Health Phys. PD MAY PY 1995 VL 68 IS 5 BP 670 EP 673 DI 10.1097/00004032-199505000-00006 PG 4 WC Environmental Sciences; Public, Environmental & Occupational Health; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging SC Environmental Sciences & Ecology; Public, Environmental & Occupational Health; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging GA QT418 UT WOS:A1995QT41800006 PM 7730063 ER PT J AU WU, C AF WU, C TI MAXIMUM OBTAINABLE POWER OF A CARNOT COMBINED POWER-PLANT SO HEAT RECOVERY SYSTEMS & CHP LA English DT Article AB Maximum obtainable power of a combined endoreversible carnot cycle is analyzed. It is found that there is a bound on the obtainable power of real combined cycles. This bound provides a new theoretical criterion for the evaluation of existing combined power generating systems or for influencing the design of future combined heat engines. RP WU, C (reprint author), USN ACAD,DEPT ENGN MECH,ANNAPOLIS,MD 21402, USA. NR 0 TC 7 Z9 9 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0890-4332 J9 HEAT RECOV SYST CHP JI Heat Recovery Syst. CHP PD MAY PY 1995 VL 15 IS 4 BP 351 EP 355 DI 10.1016/0890-4332(95)90004-7 PG 5 WC Thermodynamics; Energy & Fuels; Engineering, Mechanical; Mechanics SC Thermodynamics; Energy & Fuels; Engineering; Mechanics GA QM146 UT WOS:A1995QM14600004 ER PT J AU HOBART, KD KUB, FJ PAPANICOLOAU, NA KRUPPA, W THOMPSON, PE AF HOBART, KD KUB, FJ PAPANICOLOAU, NA KRUPPA, W THOMPSON, PE TI SI/SI1-XGEX HETEROJUNCTION BIPOLAR-TRANSISTORS WITH HIGH BREAKDOWN VOLTAGE SO IEEE ELECTRON DEVICE LETTERS LA English DT Article AB Heterojunction bipolar transistors are desirable for microwave applications because a low base resistance can be achieved yielding high maximum frequency of oscillation, Here we report Si/Si1-xGex heterojunction bipolar transistors with high breakdown voltages and excellent small-signal microwave characteristics. The transistors structures were grown by molecular beam epitaxy and fabricated by a double-mesa process. Measured f(T) and f(max) were 10 and 22 GHz, respectively, for transistors with BVCBO Of 40 V. C1 SFA INC,LANDOVER,MD 20785. RP HOBART, KD (reprint author), USN,RES LAB,DIV ELECTR SCI & TECHNOL,WASHINGTON,DC 20375, USA. NR 8 TC 14 Z9 18 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 MAY PY 1995 VL 16 IS 5 BP 205 EP 207 DI 10.1109/55.382241 PG 3 WC Engineering, Electrical & Electronic SC Engineering GA QW571 UT WOS:A1995QW57100017 ER PT J AU ZHU, J LEWIS, TG JACKSON, W WILSON, RL AF ZHU, J LEWIS, TG JACKSON, W WILSON, RL TI SCHEDULING IN HARD REAL-TIME APPLICATIONS SO IEEE SOFTWARE LA English DT Article AB A major problem with hard real-time systems is how to be assured that they really work. The authors present theorems to extract timing information from a design diagram and then use it to analyze the feasibility that a uniprocessor system will meet its deadlines. RP ZHU, J (reprint author), USN,POSTGRAD SCH,DEPT COMP SCI,MONTEREY,CA 93943, USA. NR 8 TC 6 Z9 6 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 0740-7459 J9 IEEE SOFTWARE JI IEEE Softw. PD MAY PY 1995 VL 12 IS 3 BP 54 EP 63 DI 10.1109/52.382185 PG 10 WC Computer Science, Software Engineering SC Computer Science GA QV240 UT WOS:A1995QV24000015 ER PT J AU SANTORO, RP AF SANTORO, RP TI PIECEWISE-LINEAR MODELING OF IV CHARACTERISTICS WITH SPICE SO IEEE TRANSACTIONS ON EDUCATION LA English DT Article AB This paper presents a technique for piecewise-linear modeling of arbitrary nonlinear IV characteristics with SPICE. In particular, I-V characteristics (including those exhibiting negative resistance) that lend themseleves to piecewise-linear approximation are easily modeled using six elemental building blocks; three for voltage-controlled IV characteristics and three for current-controlled IV characteristics. The elemental building blocks are implemented with resistor, diode, independent voltage source, and independent current source SPICE primitives. Two of the elemental building blocks use the ability of SPICE to accept negative values for the resistance and diode saturation current parameters. The technique is applied to model a unijunction transistor and a tunnel diode. Two negative resistance oscillator examples which use these models are included; a current-controlled negative resistance sinusoidal oscillator (unijunction transistor) and a voltage-controlled negative resistance relaxation oscillator (tunnel diode). These examples have been used to teach the fundamentals of negative resistance oscillators and nonlinear effects to sophomores and juniors. RP SANTORO, RP (reprint author), USN ACAD,DEPT ELECT ENGN,ANNAPOLIS,MD 21402, USA. NR 3 TC 6 Z9 6 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9359 J9 IEEE T EDUC JI IEEE Trans. Educ. PD MAY PY 1995 VL 38 IS 2 BP 107 EP 117 DI 10.1109/13.387211 PG 11 WC Education, Scientific Disciplines; Engineering, Electrical & Electronic SC Education & Educational Research; Engineering GA RC147 UT WOS:A1995RC14700002 ER PT J AU WEI, A KOSIER, SL SCHRIMPF, RD COMBS, WE DELAUS, M AF WEI, A KOSIER, SL SCHRIMPF, RD COMBS, WE DELAUS, M TI EXCESS COLLECTOR CURRENT DUE TO AN OXIDE-TRAPPED-CHARGE-INDUCED EMITTER IN IRRADIATED NPN BJTS SO IEEE TRANSACTIONS ON ELECTRON DEVICES LA English DT Article AB Excess collector current in irradiated NPN BJT's is linked to an oxide-trapped-charge-induced inversion layer acting as an additional emitter. Excess collector current is modeled by interpreting the inversion layer as an extension of the emitter. C1 VTC INC,BLOOMINGTON,MN 55425. UNIV ARIZONA,DEPT ELECT & COMP ENGN,TUCSON,AZ 85721. USN,CTR SURFACE WARFARE,CRANE,IN 47522. ANALOG DEVICES INC,DIV SEMICOND,WILMINGTON,MA 01887. RP WEI, A (reprint author), MIT,MICROSYST TECHNOL LABS,CAMBRIDGE,MA 02139, USA. RI Schrimpf, Ronald/L-5549-2013 OI Schrimpf, Ronald/0000-0001-7419-2701 NR 12 TC 22 Z9 22 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 0018-9383 J9 IEEE T ELECTRON DEV JI IEEE Trans. Electron Devices PD MAY PY 1995 VL 42 IS 5 BP 923 EP 927 DI 10.1109/16.381989 PG 5 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA QU427 UT WOS:A1995QU42700019 ER PT J AU CHEN, JL KUNDU, A AF CHEN, JL KUNDU, A TI UNSUPERVISED TEXTURE SEGMENTATION USING MULTICHANNEL DECOMPOSITION AND HIDDEN MARKOV-MODELS SO IEEE TRANSACTIONS ON IMAGE PROCESSING LA English DT Article ID RANDOM-FIELDS; IMAGE SEGMENTATION; RELAXATION; CLASSIFICATION; RECOGNITION; ALGORITHM AB In this paper, we describe an automatic unsupervised texture segmentation scheme using hidden Markov models (HMM's), First, the feature map of the image is formed using Laws' micromasks and directional macromasks, Each pixel in the feature map is represented by a sequence of 4-D feature vectors, The feature sequences belonging to the same texture are modeled as an HMM, Thus, if there are M different textures present in an image, there are M distinct HMM's to be found and trained, Consequently, the unsupervised texture segmentation problem becomes an HMM-based problem, where the appropriate number of HMM's, the associated model parameters, and the discrimination among the HMM's become the foci of our scheme. A two-stage segmentation procedure is used, First, coarse segmentation is used to obtain the approximate number of HMM's and their associated model parameters, Then, fine segmentation is used to accurately estimate the number of HMM's and the model parameters, In these two stages, the critical task of merging the similar HMM's is accomplished by comparing the discrimination information (DI) between the two HMM's against a threshold computed from the distribution of all DI's, A postprocessing stage of multiscale majority filtering is used to further enhance the segmented result, The proposed scheme is highly suitable for pipeline/parallel implementation, Detailed experimental results are reported, These results indicate that the present scheme compares favorably with respect to other successful schemes reported in the literature. C1 USN COMMAND,CTR CONTROL & OCEAN SURVEILLANCE,DIV RDT&E,SAN DIEGO,CA 92152. SUNY BUFFALO,DEPT BIOPHYS SCI,BUFFALO,NY 14214. RP CHEN, JL (reprint author), CHUNG HUA POLYTECH INST,DEPT COMP SCI,HSINCHU,TAIWAN. NR 37 TC 35 Z9 39 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 1057-7149 J9 IEEE T IMAGE PROCESS JI IEEE Trans. Image Process. PD MAY PY 1995 VL 4 IS 5 BP 603 EP 619 DI 10.1109/83.382495 PG 17 WC Computer Science, Artificial Intelligence; Engineering, Electrical & Electronic SC Computer Science; Engineering GA QV845 UT WOS:A1995QV84500007 PM 18290010 ER PT J AU KROWNE, CM AF KROWNE, CM TI NONRECIPROCITY IN MAGNETOELECTRIC CRYSTALS SO IEEE TRANSACTIONS ON MAGNETICS LA English DT Article ID YIG AB We show here that antiferromagnetic crystals, and crystals with expected simultaneous ferroelectric and antiferromagnetic or antiferroelectric and antiferromagnetic properties, which display the magnetoelectric effect, will possess the fundamental property of nonreciprocity based solely upon this effect when exposed to electromagnetic waves. Proof is presented of this phenomenon by enlisting the anisotropic reaction theorem. Defining measures of nonreciprocity from this theorem, it is demonstrated which crystals have nonreciprocal behavior based upon the magnetoelectric effect and which crystals may be expected to show nonreciprocal behavior based upon the magnetoelectric effect. RP KROWNE, CM (reprint author), USN,RES LAB,DIV ELECTR SCI & TECHNOL,MICROWAVE TECHNOL BRANCH,CODE 68503,WASHINGTON,DC 20375, USA. NR 16 TC 12 Z9 12 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9464 J9 IEEE T MAGN JI IEEE Trans. Magn. PD MAY PY 1995 VL 31 IS 3 BP 2209 EP 2214 DI 10.1109/20.376243 PN 2 PG 6 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA QR395 UT WOS:A1995QR39500003 ER PT J AU KIRCHOEFER, SW AF KIRCHOEFER, SW TI MICROWAVE INTERACTIONS IN SEMICONDUCTOR MULTIPLE-QUANTUM-WELL HETEROSTRUCTURES UTILIZING A COPLANAR-STRIP GEOMETRY DEVICE SO IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES LA English DT Article ID NEGATIVE DIFFERENTIAL RESISTANCE; STATE TRANSFER DEVICE AB A novel device design utilizing a multiple-quantum-well heterostructure conduction channel with an oxide-isolated overlying coplanar-strip transmission line has been constructed, These devices exhibit negative differential conductance in their dc characteristics for current transport in the plane of the quantum-well layers, originating from the change in mobility of the heated electrons within the quantum-well structure. This device design has permitted the observation of nonlinear conduction properties using these multiple-quantum-well heterostructures at microwave frequencies. RP KIRCHOEFER, SW (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 8 TC 2 Z9 2 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9480 J9 IEEE T MICROW THEORY JI IEEE Trans. Microw. Theory Tech. PD MAY PY 1995 VL 43 IS 5 BP 1122 EP 1127 DI 10.1109/22.382075 PG 6 WC Engineering, Electrical & Electronic SC Engineering GA QW252 UT WOS:A1995QW25200019 ER PT J AU MALIK, A HOUGHTEN, R CORRADIN, G BUUS, S BERZOFSKY, JA HOFFMAN, SL AF MALIK, A HOUGHTEN, R CORRADIN, G BUUS, S BERZOFSKY, JA HOFFMAN, SL TI IDENTIFICATION OF A NONAMERIC H-2K(K)-RESTRICTED CD8+ CYTOTOXIC T-LYMPHOCYTE EPITOPE ON THE PLASMODIUM-FALCIPARUM CIRCUMSPOROZOITE PROTEIN SO INFECTION AND IMMUNITY LA English DT Article ID CLASS-I; PROTECTIVE IMMUNITY; PEPTIDES; CELLS; MALARIA; ANTIGEN; MICE; IMMUNIZATION; ASSOCIATION; MOLECULES AB Class I-restricted CD8(+) cytotoxic T lymphocytes (CTL) against the circumsporozoite protein (CSP) protect mice against the rodent malaria parasite, Plasmodium yoelii, and vaccines designed to produce protective CTL against the P. falciparum CSP (PfCSP) are under development. Humans and B10.BR (H-2(k)) mice have been shown to have CD8(+) CTL activity against a 23-amino-acid region of the PfCSP (residues 368 to 390 from the PfCSP 7G8 sequence) that is too long to bind directly to class I major histocompatibility complex molecules. To identify within this 23-amino-acid peptide a shorter peptide that binds to an H-2(k) class I major histocompatibility molecule, a primarily CD8(+) (97.8%) T-cell line (PfCSP TCL.1) was produced by immunizing B10.BR mice with recombinant vaccinia virus expressing the PfCSP and stimulating in vitro spleen cells from these immunized mice with L cells transfected with the PfCSP gene (LPF cells), PfCSP TCL.1 lysed LPF cells and L cells pulsed with peptide PfCSP 7G8 368-390. When 15 overlapping nonamer peptides spanning the 368 to 390 sequence were tested, only one peptide, PfCSP 7G8 375-383 (Y E N D I E K K I), which includes an H-2K(k)-binding motif E at amino acid residue 2, and I at residue 9, sensitized targets for lysis by PfCSP TCL.1. Furthermore, a 10(3)- to 10(4)-fold lower concentration of the nonamer than that of the 23-amino-acid peptide was required to sensitize target cells for lysis by PfCSP TCL.1. Presentation by H-2K(k) was demonstrated by using 3T3 fibroblast cells transfected with the murine H-2K(k) or H-2D(k) genes, and only the H-2K(k) transfectants were lysed by PfCSP TCL.1 after incubation with peptide PfCSP 7G8 375-383. Binding to H-2K(k) was confirmed by competitive inhibition of binding of labelled peptides to affinity-purified K-k molecules. Substitution of the anchor amino acid residue, E, at position 2 with A dramatically reduced binding to K-k and eliminated the capacity of the peptide to sensitize target cells for killing. Variation of non-anchor residues did not markedly reduce binding to K-k but in some cases eliminated the capacity of the peptide to sensitize targets for cytolysis by PfCSP TCL.1, presumably by eliminating T-cell receptor-binding sites. These data suggest that similar studies with human T cells will be required for optimal development of peptide-based vaccines designed to produce protective class I-restricted CD8(+) CTL against the PfCSP in humans. C1 USN,MED RES INST,MALARIA PROGRAM,BETHESDA,MD 20889. TORREY PINES INST MOLEC STUDIES,SAN DIEGO,CA 92121. UNIV LAUSANNE,INST BIOCHEM,CH-1066 EPALINGES,SWITZERLAND. UNIV COPENHAGEN,INST MED MICROBIOL & IMMUNOL,COPENHAGEN,DENMARK. NCI,METAB BRANCH,MOLEC IMMUNOGENET & VACCINE RES SECT,BETHESDA,MD 20814. RI Buus, Soren/F-5446-2010 NR 40 TC 8 Z9 8 U1 0 U2 1 PU AMER SOC MICROBIOLOGY PI WASHINGTON PA 1325 MASSACHUSETTS AVENUE, NW, WASHINGTON, DC 20005-4171 SN 0019-9567 J9 INFECT IMMUN JI Infect. Immun. PD MAY PY 1995 VL 63 IS 5 BP 1955 EP 1959 PG 5 WC Immunology; Infectious Diseases SC Immunology; Infectious Diseases GA QU941 UT WOS:A1995QU94100050 PM 7537251 ER PT J AU PARK, GS ARMSTRONG, CM KYSER, RH HIRSHFIELD, JL PARKER, RK AF PARK, GS ARMSTRONG, CM KYSER, RH HIRSHFIELD, JL PARKER, RK TI LINEARLY POLARIZED TE(N,1) COUPLER SO INTERNATIONAL JOURNAL OF ELECTRONICS LA English DT Article ID AMPLIFIER AB A novel, linearly polarized TE(n,1) mode coupler has been designed and demonstrated experimentally. 99% of the fundamental TE(1,0) mode in a rectangular waveguide is converted to the TE(3,1) mode in a cylindrical waveguide in this coupler. The field pattern of the linearly polarized TE(3,1) mode has been verified using a RF probe for an X-band coupler. The coupling and return losses in the X-band and Ka-band couplers measured are in good agreement with theoretical predictions. For the Ka-band coupler, -25 dB of return loss and 7% 3 dB bandwidth has been measured. C1 NORTHROP CORP,ROLLING MEADOWS,IL 60008. BK SYST INC,ROCKVILLE,MD 20852. YALE UNIV,NEW HAVEN,CT 06520. USN,RES LAB,WASHINGTON,DC 20375. RP PARK, GS (reprint author), OMEGA P INC,NEW HAVEN,CT 06520, USA. RI Park, Gunsik/A-1415-2014 NR 6 TC 10 Z9 10 U1 0 U2 1 PU TAYLOR & FRANCIS LTD LONDON PI LONDON PA ONE GUNDPOWDER SQUARE, LONDON, ENGLAND EC4A 3DE SN 0020-7217 J9 INT J ELECTRON JI Int. J. Electron. PD MAY PY 1995 VL 78 IS 5 BP 983 EP 990 DI 10.1080/00207219508926225 PG 8 WC Engineering, Electrical & Electronic SC Engineering GA RC667 UT WOS:A1995RC66700015 ER PT J AU BEATTY, DJ WALKER, JS BROWN, SH SONDERGAARD, NA AF BEATTY, DJ WALKER, JS BROWN, SH SONDERGAARD, NA TI INERTIAL EFFECTS IN ELECTROMAGNETICALLY DRIVEN LIQUID-METAL FLOWS WITH A PERIODICALLY WAVY BOUNDARY SO INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE LA English DT Article AB We treat a liquid-metal flow in a gap between two solid perfect conductors with different voltages and with an externally applied, transverse magnetic field. One conductor has a plane surface and the other has a periodically wavy surface. There is a free surface and an electrically insulating, inviscid gas on each side of the conductor with the plane surface. Most of the electric current lines between the conductors are parallel to the magnetic field lines, but, near each corner where a free surface and the plane conductor meet, current lines fringe across the magnetic field lines. This fringing creates an electromagnetic body force which drives a flow parallel to the conductor corner. The inertialess Bow for large values of the interaction parameter consists of flow over the tops of the hills of the wavy surface and a recirculation which is trapped between each pair of adjacent hills. Inertial effects convect the transverse parts of these recirculations to the crests of the hills and to the bottoms of the valleys, and this convection results in more circulations in planes which are perpendicular to the magnetic field. The flow is very different from the fully developed flow for two plane perfect conductors, and inertial effects significantly a:ter the periodic flow. This problem models the flow in a liquid-metal sliding electrical contact with a I,rush insert, and the periodically wavy boundary models the surface of the brush. C1 UNIV ILLINOIS,DEPT MECH & IND ENGN,URBANA,IL 61801. ANNAPOLIS DETACHMENT,NAVAL SURFACE WARFARE CTR,ANNAPOLIS,MD 21402. NR 8 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 0020-7225 J9 INT J ENG SCI JI Int. J. Eng. Sci. PD MAY PY 1995 VL 33 IS 6 BP 895 EP 906 DI 10.1016/0020-7225(94)00097-4 PG 12 WC Engineering, Multidisciplinary SC Engineering GA QK221 UT WOS:A1995QK22100011 ER PT J AU MEMORY, SB SUGIYAMA, DC MARTO, PJ AF MEMORY, SB SUGIYAMA, DC MARTO, PJ TI NUCLEATE POOL BOILING OF R-114 AND R-114-OIL MIXTURES FROM SMOOTH AND ENHANCED SURFACES .1. SINGLE TUBES SO INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER LA English DT Article ID HEAT-TRANSFER AB Measurements of pool-boiling heat-transfer coefficients in pure R-114 and R-114-oil mixtures are reported for a smooth tube and eight enhanced tubes (five finned and three re-entrant cavity). Tests were carried out at atmospheric pressure while decreasing the heat flux. For pure refrigerant, the finned tubes typically provide enhancements of between 3 and 4, whilst the re-entrant cavity tubes provide enhancements of more than 10 at low heat fluxes, decreasing to around 4 at high heat fluxes. With addition of oil, performance of the finned tubes at first increases (with 3% oil) before dropping off. For the reentrant cavity tubes, addition of oil causes a steady drop-off in performance; especially for the porous tube where heat transfer rates similar to that of the smooth tube were obtained. C1 USN,POSTGRAD SCH,DEPT MECH ENGN,MONTEREY,CA 93943. RP MEMORY, SB (reprint author), UNIV MIAMI,DEPT MECH ENGN,CORAL GABLES,FL 33124, USA. NR 48 TC 59 Z9 62 U1 0 U2 8 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0017-9310 J9 INT J HEAT MASS TRAN JI Int. J. Heat Mass Transf. PD MAY PY 1995 VL 38 IS 8 BP 1347 EP 1361 DI 10.1016/0017-9310(94)00263-U PG 15 WC Thermodynamics; Engineering, Mechanical; Mechanics SC Thermodynamics; Engineering; Mechanics GA QP902 UT WOS:A1995QP90200002 ER PT J AU MEMORY, SB AKCASAYAR, N ERAYDIN, H MARTO, PJ AF MEMORY, SB AKCASAYAR, N ERAYDIN, H MARTO, PJ TI NUCLEATE POOL BOILING OF R-114 AND R-114-OIL MIXTURES FROM SMOOTH AND ENHANCED SURFACES .2. TUBE BUNDLES SO INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER LA English DT Article ID HEAT-TRANSFER; HORIZONTAL TUBE; FINNED TUBE; CROSS-FLOW AB Measurements of pool boiling heat-transfer coefficients in pure R-114 and R-114-oil mixtures are reported for a bundle of smooth tubes and three enhanced tube bundles (finned; structured and porous). Each bundle contained 15 electrically heated tubes (five of which were instrumented) in a staggered triangular-pitch layout. Tests were carried out at atmospheric pressure while decreasing the heat flux. For pure refrigerant, the structured and porous bundles provide the highest average enhancements of between 4 and 6. For all but the porous bundle, the bundle effect is only significant at low heat fluxes: the porous tube bundle exhibits no bundle effect. With addition of oil, the performance of the smooth and finned tube bundles at first increases before dropping off slightly. For the structured and porous bundles, oil addition leads to a steady decrease in performance, especially for the porous bundle at high heat fluxes. C1 USN,POSTGRAD SCH,DEPT MECH ENGN,MONTEREY,CA 93943. RP MEMORY, SB (reprint author), UNIV MIAMI,DEPT MECH ENGN,CORAL GABLES,FL 33124, USA. NR 36 TC 38 Z9 39 U1 2 U2 6 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0017-9310 J9 INT J HEAT MASS TRAN JI Int. J. Heat Mass Transf. PD MAY PY 1995 VL 38 IS 8 BP 1363 EP 1376 DI 10.1016/0017-9310(94)00264-V PG 14 WC Thermodynamics; Engineering, Mechanical; Mechanics SC Thermodynamics; Engineering; Mechanics GA QP902 UT WOS:A1995QP90200003 ER PT J AU DUPRE, G DREMIN, AN CLAVIN, P DESBORDES, D ORAN, E KONDRIKOV, B MELIUS, C PRESLES, HN BORIS, JP NELSON, K GUPTA, YM DLOTT, D RAMSAY, JB BORISOV, AA AF DUPRE, G DREMIN, AN CLAVIN, P DESBORDES, D ORAN, E KONDRIKOV, B MELIUS, C PRESLES, HN BORIS, JP NELSON, K GUPTA, YM DLOTT, D RAMSAY, JB BORISOV, AA TI OVERALL ASPECTS OF DETONATION - LIQUIDS AND GASES - DISCUSSION SO JOURNAL DE PHYSIQUE IV LA English DT Discussion C1 INST CHEM PHYS,CHERNOGOLOVKA 142432,RUSSIA. CNRS,F-13397 MARSEILLE 20,FRANCE. ENSMA,F-86960 FUTUROSCOPE,FRANCE. USN,RES LAB,WASHINGTON,DC 20375. MENDELEEV UNIV CHEM TECHNOL,MOSCOW 125190,RUSSIA. SANDIA NATL LABS,LIVERMORE,CA 94551. MIT,CAMBRIDGE,MA 02139. WASHINGTON STATE UNIV,PULLMAN,WA 99164. UNIV ILLINOIS,URBANA,IL 61801. LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. INST CHEM PHYS,MOSCOW 117997,RUSSIA. RP DUPRE, G (reprint author), CNRS,CRCCHT,LCSR,AVE RECH SCI,F-45071 ORLEANS,FRANCE. NR 0 TC 0 Z9 0 U1 0 U2 0 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 1155-4339 J9 J PHYS IV JI J. Phys. IV PD MAY PY 1995 VL 5 IS C4 BP 171 EP 175 PG 5 WC Physics, Multidisciplinary SC Physics GA RL210 UT WOS:A1995RL21000022 ER PT J AU MILLER, RS GOLDWASSER, JM AF MILLER, RS GOLDWASSER, JM TI RESEARCH INTO THE DETONATION OF NON IDEAL VERSUS IDEAL EXPLOSIVES SO JOURNAL DE PHYSIQUE IV LA English DT Article; Proceedings Paper CT 2nd International Workshop on Microscopic and Macroscopic Approaches to Detonation CY OCT 02-07, 1994 CL ST MALO, FRANCE SP CEA, Ctr Etudes Vaujours Moronvilliers AB The objectives are to determine, understand, and control the mechanisms and the rates of energy release in metallized explosive compositions during the detonation state and in the post-detonation regime. The goals of the initiative are to: (i) account for the total energy and the rates of energy release in the underwater detonation of a composite metallized explosive, (ii) establish and demonstrate concepts which can be employed to ''dial'' the near field pressure/time profile in order to maximize the desired energy coupling to the target, and (iii) develop a laboratory scale underwater detonation experiment, which will be able to accurately characterize the performance of novel metallized composite explosives. Research will be conducted to: (i) characterize the detonation both inside the explosive medium and in the water column at near-field, (ii) understand the parameters in the microstructural transport processes which govern the reactions of metal fuels with oxidizer molecules at temperature and pressure extremes, and the rates with which these processes take place, and (iii) identify the mechanisms by which energy is added, lost, or modified as the detonation wave and subsequent gas expansion propagate from the explosive into the water. RP MILLER, RS (reprint author), OFF NAVAL RES,DIV MECH & ENERGY CONVERS,800 N QUINCY ST,ARLINGTON,VA 22217, USA. NR 0 TC 0 Z9 0 U1 1 U2 2 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 1155-4339 J9 J PHYS IV JI J. Phys. IV PD MAY PY 1995 VL 5 IS C4 BP 189 EP 190 DI 10.1051/jp4:1995416 PG 2 WC Physics, Multidisciplinary SC Physics GA RL210 UT WOS:A1995RL21000025 ER PT J AU BRUN, L FAUQUIGNON, C VEYRIE, P CLAVIN, P MELIUS, C DAVIS, WC VOLK, F MILLER, RS KONDRIKOV, BN MCAFFEE, JM BORISOV, AA AF BRUN, L FAUQUIGNON, C VEYRIE, P CLAVIN, P MELIUS, C DAVIS, WC VOLK, F MILLER, RS KONDRIKOV, BN MCAFFEE, JM BORISOV, AA TI STATEMENTS FROM LABORATORIES ON NONIDEAL BEHAVIOR OF ENERGETIC MATERIALS - DISCUSSION SO JOURNAL DE PHYSIQUE IV LA English DT Discussion C1 CNRS,F-13397 MARSEILLE 20,FRANCE. LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. ISL,F-68301 ST LOUIS,FRANCE. SANDIA NATL LABS,LIVERMORE,CA 94551. OFF NAVAL RES,ARLINGTON,VA 22217. ICT FRAUNHOFER INST,BERGHAUSEN,GERMANY. INST PHYS CHEM,MOSCOW 117997,RUSSIA. MENDELEEV UNIV CHEM TECHNOL,MOSCOW 125190,RUSSIA. RP BRUN, L (reprint author), CEA,BP 7,F-77181 COURTRY,FRANCE. NR 0 TC 0 Z9 0 U1 0 U2 0 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 1155-4339 J9 J PHYS IV JI J. Phys. IV PD MAY PY 1995 VL 5 IS C4 BP 216 EP 219 PG 4 WC Physics, Multidisciplinary SC Physics GA RL210 UT WOS:A1995RL21000028 ER PT J AU DOYLE, RJ DUNLAP, BI AF DOYLE, RJ DUNLAP, BI TI REARRANGEMENTS OF AMMONIUM-NITRATE CLUSTER IONS WITH HIGH INTERNAL ENERGY SO JOURNAL DE PHYSIQUE IV LA English DT Article; Proceedings Paper CT 2nd International Workshop on Microscopic and Macroscopic Approaches to Detonation CY OCT 02-07, 1994 CL ST MALO, FRANCE SP CEA, Ctr Etudes Vaujours Moronvilliers ID DENSITY; APPROXIMATION; GEOMETRIES; GAS AB Sputtering of condensed-phase ammonium nitrate yields an extensive distribution of negative cluster ions of the form [(NH4NO3)(n)NO3](-), n greater than or equal to 3. Collision-induced dissociation of mass-selected cluster ions suggests that the first two members of the series, n = 1 and n = 2, are missing because the ions rearrange to lose one or more ammonia molecules. Gradient-corrected density-functional calculations show that NH4NO3 is strongly hydrogen bonded and that [(NH4NO3)NO3](-) has no hydrogen bonds, consistent with this ion rearranging to lose NH3 to form the strongly hydrogen-bonded ion [H(NO3)(2)](-). RP DOYLE, RJ (reprint author), USN,RES LAB,DIV CHEM,WASHINGTON,DC 20375, USA. NR 16 TC 0 Z9 0 U1 0 U2 2 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 1155-4339 J9 J PHYS IV JI J. Phys. IV PD MAY PY 1995 VL 5 IS C4 BP 417 EP 422 DI 10.1051/jp4:1995434 PG 6 WC Physics, Multidisciplinary SC Physics GA RL210 UT WOS:A1995RL21000050 ER PT J AU COFFEY, CS AF COFFEY, CS TI A TRANSITION FROM A MICROSCOPIC TO A MACROSCOPIC APPROACH TO STEADY-STATE DETONATION SO JOURNAL DE PHYSIQUE IV LA English DT Article; Proceedings Paper CT 2nd International Workshop on Microscopic and Macroscopic Approaches to Detonation CY OCT 02-07, 1994 CL ST MALO, FRANCE SP CEA, Ctr Etudes Vaujours Moronvilliers ID SHOCK; LOCALIZATION; INITIATION; SOLIDS; ENERGY AB Recent efforts to understand initiation of reaction in crystalline explosives on the microscopic level during shock or impact have been extended to the macroscopic case. This allows a different approach to the detonation problem. The initiation portion of the detonation wave is determined and when combined with the reaction zone length completely specifies the detonation wave. Detonation in an unconfined cylinderical charge is treated. This approach should have general application beyond the narrow confines of detonation in predicting the initiation response of crystalline explosives to any arbitrary shock or impact. RP COFFEY, CS (reprint author), USN,CTR SURFACE WARFARE,WHITE OAK LAB,SILVER SPRING,MD 20903, USA. NR 21 TC 1 Z9 1 U1 0 U2 2 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 1155-4339 J9 J PHYS IV JI J. Phys. IV PD MAY PY 1995 VL 5 IS C4 BP 477 EP 483 DI 10.1051/jp4:1995438 PG 7 WC Physics, Multidisciplinary SC Physics GA RL210 UT WOS:A1995RL21000056 ER PT J AU RUSSELL, TP ALLEN, TM RICE, JK GUPTA, YM AF RUSSELL, TP ALLEN, TM RICE, JK GUPTA, YM TI MICROSCOPIC EXPERIMENTAL APPROACHES TO HIGH-PRESSURE CHEMISTRY SO JOURNAL DE PHYSIQUE IV LA English DT Article; Proceedings Paper CT 2nd International Workshop on Microscopic and Macroscopic Approaches to Detonation CY OCT 02-07, 1994 CL ST MALO, FRANCE SP CEA, Ctr Etudes Vaujours Moronvilliers ID DIAMOND-ANVIL CELL; NITROMETHANE; TEMPERATURE AB The experimental study of the chemistry related to the deflagration/detonation of energetic materials is extremely challenging due to the high pressure, high temperature, and time domain under which the chemical reactions occur. in addition, non equilibrium pressure and temperature conditions temporally effect the reaction pathways and rates during the reaction process. The multiple phases of material present (i.e. the heterogeneous nature of the problem), the multiple reaction pathways (both in series and in parallel), and the temporal dependency of the physical conditions make the assignments of the early reaction products, product sequence, and reaction mechanism an extremely difficult if not nearly unsolvable problem. Recently, experimental approaches have been developed which permit the spectroscopic identification of products species, reaction sequences, and global reaction rates under simulated detonation conditions. Three experimental techniques: (1) high pressure matrix isolation (2) high pressure time-resolved absorption spectroscopy, and (3) high pressure time-resolved emission spectroscopy are used in conjunction with a gem anvil cell to probe the high pressure chemical processes. C1 WASHINGTON STATE UNIV,CTR SHOCK DYNAM,DEPT PHYS,PULLMAN,WA 99164. RP RUSSELL, TP (reprint author), USN,RES LAB,DIV CHEM,CODE 6110,WASHINGTON,DC 20375, USA. NR 14 TC 4 Z9 4 U1 0 U2 3 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 1155-4339 J9 J PHYS IV JI J. Phys. IV PD MAY PY 1995 VL 5 IS C4 BP 553 EP 559 DI 10.1051/jp4:1995444 PG 7 WC Physics, Multidisciplinary SC Physics GA RL210 UT WOS:A1995RL21000063 ER PT J AU BARDO, RD AF BARDO, RD TI REACTION-MECHANISMS IN SHOCKED, INTERCALATED GRAPHITE AND BORON-NITRIDE SO JOURNAL DE PHYSIQUE IV LA English DT Article; Proceedings Paper CT 2nd International Workshop on Microscopic and Macroscopic Approaches to Detonation CY OCT 02-07, 1994 CL ST MALO, FRANCE SP CEA, Ctr Etudes Vaujours Moronvilliers ID GROUND-STATES; MOLECULES AB The traditional ways of developing increasingly energetic materials usually lead to an increase in shock and impact sensitivities. It is, therefore, of practical and theoretical importance to design model, highly-energetic polycrystalline systems which will clearly indicate, at the molecular level, the interplay between the shock-induced reaction mechanisms and the associated excited lattice states. Theoretical and experimental studies indicate that such systems may possibly be constructed from special materials such as high-quality pyrolytic, layered graphite and hexagonal boron nitride (BN) crystals. Although each layer of graphite and BN is one of the most stable structures in nature, intercalation of the crystals with various oxidizing agents can yield energetic systems with the desired properties. As an example, intercalation with HNO3 gives crystals of density 2.20 g/cc. The optimal positioning of the HNO3 molecules between the BN layers allows the rapid formation of B2O3 in a single step with a large release of energy. A possible triggering mechanism is the shock-induced, partial sps hybridization of the layers as a result of kink band formation. RP BARDO, RD (reprint author), USN,CTR SURFACE WARFARE,10901 NEW HAMPSHIRE AVE,SILVER SPRING,MD 20903, USA. NR 18 TC 0 Z9 0 U1 0 U2 3 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 1155-4339 J9 J PHYS IV JI J. Phys. IV PD MAY PY 1995 VL 5 IS C4 BP 561 EP 570 DI 10.1051/jp4:1995445 PG 10 WC Physics, Multidisciplinary SC Physics GA RL210 UT WOS:A1995RL21000064 ER PT J AU ORAN, ES BORIS, JP AF ORAN, ES BORIS, JP TI THE LIMITS OF MOLECULAR-DYNAMICS APPLIED TO CONDENSED-PHASE ENERGETIC MATERIAL SO JOURNAL DE PHYSIQUE IV LA English DT Article; Proceedings Paper CT 2nd International Workshop on Microscopic and Macroscopic Approaches to Detonation CY OCT 02-07, 1994 CL ST MALO, FRANCE SP CEA, Ctr Etudes Vaujours Moronvilliers ID SHOCK-INDUCED DETONATIONS; SOLIDS; NITROMETHANE; PROPAGATION; SIMULATION; MODEL AB The limitations of various methods for computing manybody dynamics are summarized briefly in terms of the physical limits of the specific theory and generally of what can reasonably be computed. This information is then used to assess the current computational limit on using molecular dynamics to describe shocks and detonations in condensed phase energetic materials. This question is addressed by defining the computational requirements of a molecular dynamics simulation of a detonation propagating in an idealized nitromethane crystal lattice. The major questions addressed are: What is required to compute the properties of the system to obtain reasonable mesoscopic data? and What is the size of the system we can now compute, using one of the largest computers available? From this analysis, we discuss several directions in which future research in this field may proceed. RP ORAN, ES (reprint author), USN,RES LAB,COMPUTAT PHYS LAB,WASHINGTON,DC 20376, USA. NR 9 TC 3 Z9 3 U1 0 U2 4 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 1155-4339 J9 J PHYS IV JI J. Phys. IV PD MAY PY 1995 VL 5 IS C4 BP 609 EP & DI 10.1051/jp4:1995450 PG 0 WC Physics, Multidisciplinary SC Physics GA RL210 UT WOS:A1995RL21000070 ER PT J AU BOILEAU, J DICK, JJ DELPUECH, A PIVINA, TS RAMSAY, JB MELIUS, CF VANDERSTEEN, A ODIOT, S COFFEY, CS BORISOV, AA ZEMAN, S VAVRA, P AF BOILEAU, J DICK, JJ DELPUECH, A PIVINA, TS RAMSAY, JB MELIUS, CF VANDERSTEEN, A ODIOT, S COFFEY, CS BORISOV, AA ZEMAN, S VAVRA, P TI MACROSCOPIC AND MICROSCOPIC APPROACHES TO DETONATION - 2ND INTERNATIONAL WORKSHOP HELD AT ST-MALO, PALAIS-DU-GRAND-LARGE - OCTOBER 2-7, 1995 - CONCLUSION SO JOURNAL DE PHYSIQUE IV LA English DT Editorial Material C1 LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. CEA,F-37260 MONTS,FRANCE. INST CHEM PHYS,MOSKAV 117997,RUSSIA. USN,CTR SURFACE WARFARE,SILVER SPRING,MD 20903. INST CHEM PHYS,MOSKAV 142432,RUSSIA. UNIV MARYLAND,COLLEGE PK,MD 20742. ND ZELINSKII INST ORGAN CHEM,MOSCOW 117913,RUSSIA. SYNTHESIA AS,VUPCH,VYZKUMNY USTAV PRUMYSLOVE,CR-53217 PARDUBICE,CZECH REPUBLIC. UNIV PARDUBICE,CR-53210 PARDUBICE,CZECH REPUBLIC. TNO,PRINS MAURITS LAB,2280 AA RIJSWIJK,NETHERLANDS. SANDIA NATL LABS,LIVERMORE,CA 94551. NR 0 TC 0 Z9 0 U1 1 U2 2 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 1155-4339 J9 J PHYS IV JI J. Phys. IV PD MAY PY 1995 VL 5 IS C4 BP 623 EP 633 PG 11 WC Physics, Multidisciplinary SC Physics GA RL210 UT WOS:A1995RL21000071 ER PT J AU EKATERINARIS, JA COUTLEY, RL SCHIFF, LB PLATZER, MF AF EKATERINARIS, JA COUTLEY, RL SCHIFF, LB PLATZER, MF TI NUMERICAL INVESTIGATION OF HIGH-INCIDENCE FLOW OVER A DOUBLE-DELTA WING SO JOURNAL OF AIRCRAFT LA English DT Article AB The vortical flowfield over a double-delta wing configuration, consisting of a sharp leading-edge 76-deg sweep strake and a 40-deg sweep wing section is investigated numerically. The governing equations are solved with a partially upwind, finite difference, two-factor algorithm. The leeward-side vortex system resulting from the strake and wing vortices is investigated for a subsonic freestream speed of M(infinity) = 0.22, high Reynolds number turbulent flow at various angles of incidence. At low angles of attack the strake and wing vortices remain separate over the wing section, whereas for flows at higher angles of attack the two vortices merge and vortex breakdown develops. Vortex breakdown appears initially in the trailing-edge region of the wing section. As the angle of attack increases, bursting occurs further upstream closer to the strake section. The effect of numerical grid density is investigated, and the solutions are compared with available experimental data. The computed surface pressures are in good agreement with the experimental measurements for the lower angles of attack, but the agreement deteriorates as the angle of attack increases. RP EKATERINARIS, JA (reprint author), USN,POSTGRAD SCH,NASA,JOINT INST AERONAUT,MONTEREY,CA 93943, USA. NR 0 TC 15 Z9 15 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0021-8669 J9 J AIRCRAFT JI J. Aircr. PD MAY-JUN PY 1995 VL 32 IS 3 BP 457 EP 463 DI 10.2514/3.46742 PG 7 WC Engineering, Aerospace SC Engineering GA RA436 UT WOS:A1995RA43600001 ER PT J AU EKATERINARIS, JA CHANDRASEKHARA, MS PLATZER, MF AF EKATERINARIS, JA CHANDRASEKHARA, MS PLATZER, MF TI ANALYSIS OF LOW-REYNOLDS-NUMBER AIRFOIL FLOWS SO JOURNAL OF AIRCRAFT LA English DT Article AB Compressible steady and unsteady flowfields over a NACA 0012 airfoil at transitional Reynolds numbers are investigated. Comparisons with recently obtained experimental data are used to evaluate the ability of a numerical solution based on the compressible thin layer Navier-Stokes approximation, augmented with a transition model, to simulate transitional flow features, The discretization is obtained with an upwind-biased, factorized, iterative scheme. Transition onset is estimated using an empirical criterion based on the computed mean flow boundary-layer quantities. The transition length is computed from an empirical formula. The incorporation of transition modeling enables the prediction of the experimentally observed leading-edge separation bubbles. Results for steady airfoil flows at fixed angles of attack and for oscillating airfoils are presented. RP EKATERINARIS, JA (reprint author), USN,POSTGRAD SCH,NASA,JOINT INST AERONAUT,DEPT AERONAUT & ASTRONAUT,MONTEREY,CA 93943, USA. NR 0 TC 7 Z9 7 U1 1 U2 5 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0021-8669 J9 J AIRCRAFT JI J. Aircr. PD MAY-JUN PY 1995 VL 32 IS 3 BP 625 EP 630 DI 10.2514/3.46765 PG 6 WC Engineering, Aerospace SC Engineering GA RA436 UT WOS:A1995RA43600024 ER PT J AU HEBBAR, SK PLATZER, MF FRINK, WD AF HEBBAR, SK PLATZER, MF FRINK, WD TI EFFECT OF LEADING-EDGE EXTENSION FENCES ON THE VORTEX WAKE OF AN F/A-18 MODEL SO JOURNAL OF AIRCRAFT LA English DT Note RP HEBBAR, SK (reprint author), USN,POSTGRAD SCH,DEPT AERONAUT & ASTRONAUT,MONTEREY,CA 93943, USA. NR 0 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 0021-8669 J9 J AIRCRAFT JI J. Aircr. PD MAY-JUN PY 1995 VL 32 IS 3 BP 680 EP 682 DI 10.2514/3.46774 PG 3 WC Engineering, Aerospace SC Engineering GA RA436 UT WOS:A1995RA43600033 ER PT J AU KELSO, JM AF KELSO, JM TI BETTER DRUG TRIALS SO JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY LA English DT Letter C1 USN,MED CTR,DEPT INTERNAL MED,DIV ALLERGY,SAN DIEGO,CA 92134. RP KELSO, JM (reprint author), USN,MED CTR,DEPT CLIN INVEST,SAN DIEGO,CA 92134, USA. NR 1 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 0091-6749 J9 J ALLERGY CLIN IMMUN JI J. Allergy Clin. Immunol. PD MAY PY 1995 VL 95 IS 5 BP 1063 EP 1063 DI 10.1016/S0091-6749(95)70115-X PN 1 PG 1 WC Allergy; Immunology SC Allergy; Immunology GA QY917 UT WOS:A1995QY91700026 PM 7751508 ER PT J AU HORNBECK, CL BARTON, KM CZARNY, RJ AF HORNBECK, CL BARTON, KM CZARNY, RJ TI URINE CONCENTRATIONS OF ECGONINE FROM SPECIMENS WITH LOW BENZOYLECGONINE LEVELS USING A NEW ECGONINE ASSAY SO JOURNAL OF ANALYTICAL TOXICOLOGY LA English DT Article ID METHYL-ESTER; COCAINE; STABILITY; METABOLITES RP HORNBECK, CL (reprint author), USN,DRUG SCREENING LAB,SAN DIEGO,CA 92134, USA. NR 19 TC 12 Z9 12 U1 0 U2 0 PU PRESTON PUBLICATIONS INC PI NILES PA 7800 MERRIMAC AVE PO BOX 48312, NILES, IL 60648 SN 0146-4760 J9 J ANAL TOXICOL JI J. Anal. Toxicol PD MAY-JUN PY 1995 VL 19 IS 3 BP 133 EP 138 PG 6 WC Chemistry, Analytical; Toxicology SC Chemistry; Toxicology GA QX913 UT WOS:A1995QX91300001 PM 7564289 ER PT J AU ROMBERG, RW LEE, LW AF ROMBERG, RW LEE, LW TI COMPARISON OF THE HYDROLYSIS RATES OF MORPHINE-3-GLUCURONIDE AND MORPHINE-6-GLUCURONIDE WITH ACID AND BETA-GLUCURONIDASE SO JOURNAL OF ANALYTICAL TOXICOLOGY LA English DT Article ID PATELLA-VULGATA; MORPHINE; CODEINE; URINE; INGESTION; OPIATES; HEROIN RP ROMBERG, RW (reprint author), USN,DRUG SCREENING LAB,GREAT LAKES,IL 60088, USA. NR 20 TC 45 Z9 45 U1 0 U2 3 PU PRESTON PUBLICATIONS INC PI NILES PA 7800 MERRIMAC AVE PO BOX 48312, NILES, IL 60648 SN 0146-4760 J9 J ANAL TOXICOL JI J. Anal. Toxicol PD MAY-JUN PY 1995 VL 19 IS 3 BP 157 EP 162 PG 6 WC Chemistry, Analytical; Toxicology SC Chemistry; Toxicology GA QX913 UT WOS:A1995QX91300005 PM 7564293 ER PT J AU ZVANUT, ME CHEN, TL STAHLBUSH, RE STEIGENVALT, ES BROWN, GA AF ZVANUT, ME CHEN, TL STAHLBUSH, RE STEIGENVALT, ES BROWN, GA TI GENERATION OF THERMALLY-INDUCED DEFECTS IN BURIED SIO2-FILMS SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID INTERFACE; ELECTRON; CENTERS; SILICON; OXYGEN C1 USN,RES LAB,WASHINGTON,DC 20375. TEXAS INSTRUMENTS INC,DALLAS,TX 75265. RP ZVANUT, ME (reprint author), UNIV ALABAMA,BIRMINGHAM,AL 35294, USA. NR 18 TC 22 Z9 22 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD MAY 1 PY 1995 VL 77 IS 9 BP 4329 EP 4333 DI 10.1063/1.359456 PG 5 WC Physics, Applied SC Physics GA QV479 UT WOS:A1995QV47900014 ER PT J AU MOLNAR, B AF MOLNAR, B TI THE INFLUENCE OF ANNEALING ON THE INTERFACE PROPERTIES OF LOW-DOSE SI IMPLANTED N-LAYERS IN SEMIINSULATING INP SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID INDIUM-PHOSPHIDE; JUNCTION; GAAS RP MOLNAR, B (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 21 TC 0 Z9 0 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 MAY 1 PY 1995 VL 77 IS 9 BP 4393 EP 4398 DI 10.1063/1.359466 PG 6 WC Physics, Applied SC Physics GA QV479 UT WOS:A1995QV47900024 ER PT J AU WATERS, JH RIZZO, VL RAMANATHAN, S AF WATERS, JH RIZZO, VL RAMANATHAN, S TI A REEVALUATION OF THE ABILITY OF THIOPENTAL TO IDENTIFY CEREBROSPINAL-FLUID EPIDURAL IN CATHETER ASPIRATE SO JOURNAL OF CLINICAL ANESTHESIA LA English DT Article DE ANESTHETIC TECHNIQUES; EPIDURAL ASPIRATE; EPIDURAL; SODIUM THIOPENTAL; CEREBROSPINAL FLUID AB Study Objective: Sodium thiopental has been used to determine whether fluid aspirated from an epidural catheter is previously injected local anesthetic or cerebrospinal fluid (CSF). The purpose of this study was to test the efficacy of this test in distinguishing opioids from CSF. Design: in vitro study. Setting: Laboratory of a university hospital. Measurements and Main Results: Three in vitro studies were performed. The first study tested for precipitation when thiopental was mixed with several commonly used epidural medications. Then, thiopental was mixed in combinations of opioids with local anesthetics to see if the opioid might prevent the precipitation of the local anesthetics. Finally, lidocaine was serially diluted and precipitation with thiopental was assessed. It was found that certain concentrations of opioids as well as normal saline do not precipitate with thiopental. In addition, the ratio of opioids to local anesthetic of 10:1 prevented precipitation when thiopental was added. Local anesthetics combined with cerebrospinal fluid in a 1:10 ratio produced a precipitate on mixing with thiopental. Conclusions: Use of thiopental to differentiate opioids from cerebrospinal fluid is unreliable. In addition, in some simulated situations, opioids may mash the presence of local anesthetic. C1 USN,MED CTR,DEPT ANESTHESIOL,SAN DIEGO,CA. NR 0 TC 2 Z9 3 U1 0 U2 0 PU BUTTERWORTH-HEINEMANN PI WOBURN PA 225 WILDWOOD AVE #UNITB PO BOX 4500, WOBURN, MA 01801-2084 SN 0952-8180 J9 J CLIN ANESTH JI J. Clin. Anesth. PD MAY PY 1995 VL 7 IS 3 BP 224 EP 227 DI 10.1016/0952-8180(95)00009-7 PG 4 WC Anesthesiology SC Anesthesiology GA RC064 UT WOS:A1995RC06400010 PM 7669313 ER PT J AU KOHNE, CH HIDDEMANN, W SCHULLER, J WEISS, J LOHRMANN, HP SCHMITZHUBNER, U BODENSTEIN, H SCHOBER, C WILKE, H GREM, J SCHMOLL, HJ AF KOHNE, CH HIDDEMANN, W SCHULLER, J WEISS, J LOHRMANN, HP SCHMITZHUBNER, U BODENSTEIN, H SCHOBER, C WILKE, H GREM, J SCHMOLL, HJ TI FAILURE OF ORALLY-ADMINISTERED DIPYRIDAMOLE TO ENHANCE THE ANTINEOPLASTIC ACTIVITY OF FLUOROURACIL IN COMBINATION WITH LEUCOVORIN IN PATIENTS WITH ADVANCED COLORECTAL-CANCER - A PROSPECTIVE RANDOMIZED TRIAL SO JOURNAL OF CLINICAL ONCOLOGY LA English DT Article ID PHASE-I TRIAL; FOLINIC ACID; BIOCHEMICAL MODULATION; CONTINUOUS INFUSION; CYTO-TOXICITY; 5-FLUOROURACIL; CARCINOMA; CELLS; AUGMENTATION; CHEMOTHERAPY AB Purpose: A randomized trial was performed to investigate the ability of the nucleoside transport inhibitor dipyridamole (DP) to enhance the antitumor activity of fluorouracil (5-FU)/leucovorin (folinic acid [FA]). Patients and Methods: One hundred eighty-one untreated patients with advanced colorectal cancer were randomized to receive 5-FU 600 mg/m(2) plus FA 300 mg/m(2) on days 2 to 4 with or without DP 75 mg orally three times daily on days 1 to 5. Cycles were repeated every 3 weeks. Only patients with documented tumor progression before therapy were eligible. 5-FU pharmacokinetics using high-performance liquid chromatography (HPLC) were assessed in 11 nonrandomized patients receiving paired cycles with or without DP. Results: One hundred seventy-four patients were assessable for toxicity and response. There was no significant difference in toxicity, except DP-related headache in 24% of patients. An objective response rate of 15% (one complete response [CR] and 13 partial responses [PRs]) for 5-FU/FA and 13% (two CRs and nine PRs) for 5-FU/FA/DP was observed. The dose-intensity of 5-FU delivered was significantly higher (1.09- to 1.16-fold) for the DP-containing arm. Pharmacokinetic parameters of 5-FU did not differ significantly, except for a prolonged half-life (t(1/2)) induced by DP. The median time to progression (P = .8) and the median survival time (11.6 months for 5-FU/FA v 9.3 months for 5-FU/FA/DP; P = .14, log-rank test) were not different between treatment arms. Conclusion: Orally administered DP did not improve the antineoplastic activity of 5-FU/FA in patients with advanced colorectal cancer when used at this dose and schedule. The observed increase in 5-FU dose-intensity for FU/FA/DP was not clinically relevant. C1 HOSP RUDOLFSSTIFTUNG,VIENNA,AUSTRIA. UNIV GOTTINGEN,DEPT HEMATOL ONCOL,W-3400 GOTTINGEN,GERMANY. HOSP BARMHERZIGE,DEPT ONCOL,REGENSBURG,GERMANY. HOSP LEMGO,DEPT MED,LEMGO,GERMANY. HOSP HERFORD,DEPT MED,HERFORD,GERMANY. HOSP MINDEN,DEPT HEMATOL ONCOL,MINDEN,GERMANY. WESTDEUTSCH TUMORZENTRUM,ESSEN,GERMANY. USN HOSP,NCI,MED ONCOL BRANCH,BETHESDA,MD 20814. RP KOHNE, CH (reprint author), HANNOVER MED SCH,DEPT HEMATOL ONCOL,KONSTANTY GUTSCHOW STR 8,D-30625 HANNOVER,GERMANY. NR 35 TC 23 Z9 23 U1 0 U2 1 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0732-183X J9 J CLIN ONCOL JI J. Clin. Oncol. PD MAY PY 1995 VL 13 IS 5 BP 1201 EP 1208 PG 8 WC Oncology SC Oncology GA QV951 UT WOS:A1995QV95100022 PM 7738622 ER PT J AU SHIN, J VERMA, A STRINGFELLOW, GB GEDRIDGE, RW AF SHIN, J VERMA, A STRINGFELLOW, GB GEDRIDGE, RW TI GROWTH OF GASB USING TRISDIMETHYLAMINOANTIMONY SO JOURNAL OF CRYSTAL GROWTH LA English DT Article ID LIQUID-PHASE EPITAXY; GALLIUM ANTIMONIDE; GAAS; PHOTOLUMINESCENCE; SEMICONDUCTOR; MOVPE; CVD AB The organometallic vapor phase epitaxial (OMVPE) growth of GaSb using a new Sb source, trisdimethylaminoantimony (TDMASb) is described for a wide temperature range between 450 and 600 degrees C. Good surface morphologies were obtained at low V/III ratios due to the effective pyrolysis of TDMASb. High growth efficiencies were observed at growth temperatures as low as 475 degrees C. As the growth temperature was decreased, the incomplete decomposition of trimethylgallium (TMGa) was; found to lower the optimum V/III ratio necessary to produce layers with good surface morphologies. The as-grown, unintentionally doped GaSb layers were p-type with background carrier concentrations of approximately 10(17) cm(-3). Well resolved 15 K photoluminescence spectra and X-ray diffraction data indicate the GaSb layers to be of high quality for the growth temperature range studied. The results indicate that TDMASb is an excellent precursor for the OMVPE growth of GaSb over a wide range of growth temperatures. C1 USN,CTR AIR WARFARE,OPT & ELECTR MAT BRANCH,DIV CHEM,CHINA LAKE,CA 93555. RP SHIN, J (reprint author), UNIV UTAH,DEPT MAT SCI,SALT LAKE CITY,UT 84112, USA. NR 25 TC 17 Z9 17 U1 0 U2 2 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 MAY PY 1995 VL 151 IS 1-2 BP 1 EP 8 DI 10.1016/0022-0248(94)01024-2 PG 8 WC Crystallography; Materials Science, Multidisciplinary; Physics, Applied SC Crystallography; Materials Science; Physics GA RD987 UT WOS:A1995RD98700001 ER PT J AU WATERMAN, JR AF WATERMAN, JR TI SPECIAL ISSUE - 1993 US WORKSHOP ON THE PHYSICS AND CHEMISTRY OF HGCDTE AND OTHER IR MATERIALS - FOREWORD SO JOURNAL OF ELECTRONIC MATERIALS LA English DT Editorial Material RP WATERMAN, JR (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 0361-5235 J9 J ELECTRON MATER JI J. Electron. Mater. PD MAY PY 1995 VL 24 IS 5 BP 421 EP 421 PG 1 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary; Physics, Applied SC Engineering; Materials Science; Physics GA QZ283 UT WOS:A1995QZ28300001 ER PT J AU MEYER, JR HOFFMAN, CA OMAGGIO, JP YOUNGDALE, ER BARTOLI, FJ MILES, RH CHOW, DH RAMMOHAN, LR AF MEYER, JR HOFFMAN, CA OMAGGIO, JP YOUNGDALE, ER BARTOLI, FJ MILES, RH CHOW, DH RAMMOHAN, LR TI BAND-STRUCTURE, MAGNETOTRANSPORT, AND MAGNETOOPTICAL PROPERTIES OF INAS-GA1-XINXSB SUPERLATTICES SO JOURNAL OF ELECTRONIC MATERIALS LA English DT Article; Proceedings Paper CT 1993 US Workshop on the Physics and Chemistry of Mercury Cadmium Telluride and Other IR Materials CY OCT 19-21, 1993 CL SEATTLE, WA SP USA, CECOM NIGHT VIS & ELECTR SENSORS DIRECTORATE, USAF, WRIGHT LAB, USN, OFF NAVAL TECHNOL DE BAND STRUCTURE; INAS/GAINSB SUPERLATTICE; MAGNETOTRANSPORT; MAGNETOOPTICAL ID HGTE-CDTE SUPERLATTICES; INTERFACE ROUGHNESS SCATTERING; MOLECULAR-BEAM EPITAXY; INAS/GA1-XINXSB SUPERLATTICES; ELECTRONIC-STRUCTURE; SUPER-LATTICE; QUANTUM-WELLS; GAP; MAGNETOTRANSPORT; TRANSITION AB We have theoretically and experimentally investigated the electronic properties of InAs-Ga1-xInxSb superlattices. It is found that a strong repulsion between the El and HI bands in superlattices with thin Ga1-xInxSb layers leads to dispersion relations that closely resemble those in HgTe-CdTe superlattices. Temperature-dependent magneto-transport and magneto-optical measurements on samples with a range of InAs layer thicknesses confirm several of the theoretically predicted consequences, e.g., the coexistence of two electron species in semimetallic superlattices and a very light electron cyctron mass in narrow-gap semiconducting samples. The electron mobility is found to be dominated by interface roughness scattering under nearly all conditions of interest. Implications for this system as an infrared detector material are discussed. C1 HUGHES RES LABS,MALIBU,CA 90265. WORCESTER POLYTECH INST,WORCESTER,MA 01609. RP MEYER, JR (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. RI Ram-Mohan, Ramdas/C-5167-2012 NR 27 TC 1 Z9 1 U1 0 U2 3 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 0361-5235 J9 J ELECTRON MATER JI J. Electron. Mater. PD MAY PY 1995 VL 24 IS 5 BP 551 EP 557 DI 10.1007/BF02657962 PG 7 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary; Physics, Applied SC Engineering; Materials Science; Physics GA QZ283 UT WOS:A1995QZ28300021 ER PT J AU MEYER, JR HARRIS, KA YANKA, RW MOHNKERN, LM REISINGER, AR EGLER, JF MAHALINGAM, K OTSUKA, N AF MEYER, JR HARRIS, KA YANKA, RW MOHNKERN, LM REISINGER, AR EGLER, JF MAHALINGAM, K OTSUKA, N TI INVESTIGATION OF MONOLAYER ROUGHNESS IN HGTE-CDTE SUPERLATTICES SO JOURNAL OF ELECTRONIC MATERIALS LA English DT Article; Proceedings Paper CT 1993 US Workshop on the Physics and Chemistry of Mercury Cadmium Telluride and Other IR Materials CY OCT 19-21, 1993 CL SEATTLE, WA SP USA, CECOM NIGHT VIS & ELECTR SENSORS DIRECTORATE, USAF, WRIGHT LAB, USN, OFF NAVAL TECHNOL DE HGTE-CDTE SUPERLATTICES; PHOTOLUMINESCENCE; MOLECULAR BEAM EPITAXY (MBE); QUANTUM WELLS ID MOLECULAR-BEAM EPITAXY; QUANTUM-WELL STRUCTURES; LIQUID-PHASE EPITAXY; SEMICONDUCTOR INTERFACES; LASER ACTION; PHOTOLUMINESCENCE; ELECTRON; GROWTH; TRANSPORT AB Infrared photoluminescence (PL) measurements were performed on (211)-oriented superlattices with energy gaps in the range 110-495 meV. Most of the samples with thinner HgTe quantum wells displayed two PL peaks separated by Delta h omega congruent to 30-65 meV (which generally increased with decreasing well thickness). Both peak energies (E(p)) sometimes varied gradually with location on the surface, and in one case three peaks of approximately equal spacing were observed in some locations. The data are consistent with a model which assumes the presence of randomly distributed islands having well thicknesses varying by approximately one monolayer. We find that Delta h omega and the variations of the spectra with temperature agree well with calculations based on this simple model. C1 MARTIN MARIETTA ELECTR LAB,SYRACUSE,NY 13221. PURDUE UNIV,SCH MAT ENGN,W LAFAYETTE,IN 47907. RP MEYER, JR (reprint author), USN,RES LAB,CODE 5612,WASHINGTON,DC 20375, USA. NR 33 TC 2 Z9 2 U1 1 U2 2 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 0361-5235 J9 J ELECTRON MATER JI J. Electron. Mater. PD MAY PY 1995 VL 24 IS 5 BP 707 EP 712 DI 10.1007/BF02657982 PG 6 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary; Physics, Applied SC Engineering; Materials Science; Physics GA QZ283 UT WOS:A1995QZ28300041 ER PT J AU BLACKLEDGE, RD AF BLACKLEDGE, RD TI VISCOSITY COMPARISONS OF POLYDIMETHYLSILOXANE LUBRICANTS IN LATEX CONDOM BRANDS VIA FOURIER SELF-DECONVOLUTION OF THEIR FT-IR SPECTRA SO JOURNAL OF FORENSIC SCIENCES LA English DT Note DE FORENSIC SCIENCE; SEXUAL ASSAULT; DECONVOLUTION; POLYDIMETHYLSILOXANE; FT-IR; CONDOMS AB Many brands of latex condoms use a polydimethylsiloxane lubricant. The lubricant viscosity in ten different brands was compared by determining the average chain length through the ratio of the dimethyl to trimethyl peak area obtained after applying the resolution enhancement technique of Fourier self-deconvolution to their diffuse reflectance FT-IR spectra in the area around 800 cm(-1). RP BLACKLEDGE, RD (reprint author), USN,CRIMINAL INVESTIGAT SERV,REG FORENS LAB,BOX 368220,3475 SENN RD,STE 3,SAN DIEGO,CA 92136, USA. NR 8 TC 10 Z9 10 U1 2 U2 5 PU AMER SOC TESTING MATERIALS PI W CONSHOHOCKEN PA 100 BARR HARBOR DR, W CONSHOHOCKEN, PA 19428-2959 SN 0022-1198 J9 J FORENSIC SCI JI J. Forensic Sci. PD MAY PY 1995 VL 40 IS 3 BP 467 EP 469 PG 3 WC Medicine, Legal SC Legal Medicine GA RB239 UT WOS:A1995RB23900023 PM 7782753 ER PT J AU MELENDEZALVIRA, DJ TORR, DG RICHARDS, PG SWIFT, WR TORR, MR BALDRIDGE, T RASSOUL, H AF MELENDEZALVIRA, DJ TORR, DG RICHARDS, PG SWIFT, WR TORR, MR BALDRIDGE, T RASSOUL, H TI SENSITIVITY OF THE 6300 ANGSTROM TWILIGHT AIRGLOW TO NEUTRAL COMPOSITION SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article ID IONOSPHERIC PHOTOELECTRON FLUX; EXCITATION CROSS-SECTIONS; GROUND-BASED MEASUREMENTS; NOCTURNAL F-REGION; ATOMIC OXYGEN; O(1D) ATOMS; DISSOCIATIVE RECOMBINATION; COLLISIONAL EXCITATION; SOLAR CYCLE-21; EMISSION AB The field line interhemispheric plasma (FLIP) model is used to study the 6300 Angstrom line intensity measured during three morning twilights from the McDonald Observatory in Texas. The Imaging Spectrometric Observatory (ISO) measured the 6300 Angstrom intensity during the winter of 1987 and the spring and summer of 1988. The FLIP model reproduces the measured intensity and its variation through the twilight well on each day using neutral densities from the MSIS-86 empirical model. This is in spite of the fact that different component sources dominate the integrated volume emission rate on each of the days analyzled. The sensitivity of the intensity to neutral composition is computed by varying the N-2, O-2 and O densities in the FLIP model and comparing to the intensity computed with the unmodified MSIS-86 densities. The ion densities change self-consistently. Thus the change in neutral composition also changes the electron density. The F2 peak height is unchanged in the model runs for a given day. The intensity changes near 100 degrees SZA are comparable to within 10% when either [O-2], [N-2] or [O] is changed, regardless of which component source is dominant. There is strong sensitivity to changes in [N-2] when dissociative recombination is dominant, virtually no change in the nighttime (SZA greater than or equal to 108 degrees) intensity with [O-2] doubled, and sensitivity of over 50% to doubling or halving [O] at night. When excitation by conjugate photoelectrons is the dominant nighttime component source, the relative intensity change with [O] doubled of halved is very small. This study shows the strong need for simultaneous measurements of electron density and of emissions proportional to photoelectron fluxes if the 6300 Angstrom twilight airglow is to be used to retrieve neutral densities. C1 UNIV ALABAMA,CTR SPACE PLASMA & AERON RES,OPT AERON LAB,HUNTSVILLE,AL 35899. NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,PAYLOAD PROJECTS OFF,HUNTSVILLE,AL 35812. UNIV ALABAMA,DEPT PHYS,HUNTSVILLE,AL 35899. NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,SPACE SCI LAB,HUNTSVILLE,AL 35812. FLORIDA INST TECHNOL,DEPT PHYS & SPACE SCI,MELBOURNE,FL 32901. RP MELENDEZALVIRA, DJ (reprint author), USN,RES LAB,EO HULBURT CTR SPACE RES,CODE 76431,4555 OVERLOOK AVE SW,WASHINGTON,DC 20375, USA. NR 70 TC 5 Z9 6 U1 1 U2 1 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES JI J. Geophys. Res-Space Phys. PD MAY 1 PY 1995 VL 100 IS A5 BP 7839 EP 7853 DI 10.1029/94JA02487 PG 15 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QY981 UT WOS:A1995QY98100023 ER PT J AU MARLATT, GE AF MARLATT, GE TI RESEARCHING THE VIETNAM CONFLICT THROUGH US ARCHIVAL SOURCES SO JOURNAL OF GOVERNMENT INFORMATION LA English DT Review DE VIETNAMESE CONFLICT; ARCHIVES; RESEARCH; WAR AB This article presents a comprehensive survey of the U.S. federal government's documentation of the single most important American military action of the second half of the twentieth century. Included is an essay on resources and an accompanying bibliography pertaining to U.S. government documents related to the Vietnam conflict. Most of the materials noted are derived from archival sources. Major historical works published by federal government historical agencies are also included. Finding aids are listed as appropriate. RP MARLATT, GE (reprint author), USN,POSTGRAD SCH,DUDLEY KNOX LIB,MONTEREY,CA 93943, USA. NR 103 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 1352-0237 J9 J GOV INFORM JI J. Gov. Inf. PD MAY-JUN PY 1995 VL 22 IS 3 BP 195 EP 226 DI 10.1016/1352-0237(95)00001-J PG 32 WC Information Science & Library Science SC Information Science & Library Science GA QY243 UT WOS:A1995QY24300001 ER PT J AU KIRK, KM MERTE, H KELLER, R AF KIRK, KM MERTE, H KELLER, R TI LOW-VELOCITY SUBCOOLED NUCLEATE FLOW BOILING AT VARIOUS ORIENTATIONS SO JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME LA English DT Article DE BOILING; MICROGRAVITY HEAT TRANSFER; MULTIPHASE FLOWS AB Subcooled forced convection nucleate boiling experiments with R-113 were conducted at low velocities using both thin film semitransparent gold-on-quartz and gold-coated copper substrate flat heaters at various orientations. The experiments demonstrate that if buoyancy is significant relative to bulk liquid momentum, then a decrease in the buoyant force normal to and away from the heater surface enhances the heat transfer, with the effect being greatest at low values of heat flux. Furthermore, the effect of the bulk liquid velocity is shown to be dependent on the surface orientation. C1 UNIV MICHIGAN,DEPT MECH ENGN & APPL MECH,ANN ARBOR,MI 48109. RP KIRK, KM (reprint author), USN,CTR ANAL,4401 FORD AVE,ALEXANDRIA,VA 22302, USA. NR 11 TC 9 Z9 9 U1 1 U2 2 PU ASME-AMER SOC MECHANICAL ENG PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 0022-1481 J9 J HEAT TRANS-T ASME JI J. Heat Transf.-Trans. ASME PD MAY PY 1995 VL 117 IS 2 BP 380 EP 386 DI 10.1115/1.2822533 PG 7 WC Thermodynamics; Engineering, Mechanical SC Thermodynamics; Engineering GA RC949 UT WOS:A1995RC94900020 ER PT J AU BROOK, I GILLMORE, JD AF BROOK, I GILLMORE, JD TI EXPRESSION OF CAPSULES BY HAEMOPHILUS-INFLUENZAE IN MIXED INFECTIONS SO JOURNAL OF INFECTION LA English DT Article ID TYPABLE HEMOPHILUS-INFLUENZAE; BACTEROIDES-FRAGILIS; PATHOGENICITY AB The pathogenicity of eight clinical isolates of non-type b Haemophilus influenzae was investigated by inoculating them subcutaneously into mice, alone or mixed with viable or non-viable bacteria of certain other species. Three of the H. influenzae isolates were non-capsulated while five were slightly capsulated (less than 1% of organisms had capsules). The other strains of bacteria tested were four isolates of capsulated and four isolates of non-capsulated pigmented strains of Prevotella sp, and Porphyromonus sp, as well as a capsulate Klebsiella pneumoniae (''helpers''). None of the non-capsulated strains induced an abscess when inoculated alone. Following co-inoculation of viable or non-viable ''helpers'' with H. influenzae, abscesses were formed in all instances in which the ''helper'' had a capsule. Profusely capsulated cells of H. influenzae were recovered, however, only from abscesses induced with the five slightly capsulated strains of H. influenzae. These capsulated organisms were found serologically to be of type b and induced abscesses when inoculated alone. Our findings illustrate the ability of non-capsulated strains of H, influenzae to produce progeny of capsulated type b organisms after co-inoculation with certain other species. C1 USN,MED RES INST,BETHESDA,MD. NR 15 TC 2 Z9 2 U1 0 U2 0 PU W B SAUNDERS CO LTD PI LONDON PA 24-28 OVAL RD, LONDON, ENGLAND NW1 7DX SN 0163-4453 J9 J INFECTION JI J. Infect. PD MAY PY 1995 VL 30 IS 3 BP 219 EP 222 DI 10.1016/S0163-4453(95)90716-5 PG 4 WC Infectious Diseases SC Infectious Diseases GA RG267 UT WOS:A1995RG26700006 PM 7673745 ER PT J AU WEISS, PJ WALLACE, MR OLDFIELD, EC OBRIEN, J JANOFF, EN AF WEISS, PJ WALLACE, MR OLDFIELD, EC OBRIEN, J JANOFF, EN TI RESPONSE OF RECENT HUMAN-IMMUNODEFICIENCY-VIRUS SEROCONVERTERS TO THE PNEUMOCOCCAL POLYSACCHARIDE VACCINE AND HAEMOPHILUS-INFLUENZAE TYPE-B CONJUGATE VACCINE SO JOURNAL OF INFECTIOUS DISEASES LA English DT Article ID INTRAVENOUS DRUG-USERS; CD4 LYMPHOCYTE COUNTS; UNITED-STATES-NAVY; STREPTOCOCCUS-PNEUMONIAE; HIV-INFECTION; YOUNG-ADULTS; CAPSULAR POLYSACCHARIDES; ANTIBODY-RESPONSES; MARINE-CORPS; AIDS AB Antibody responses in recent human immunodeficiency virus (HIV) seroconverters to 2 vaccines were studied. Twenty patients infected with HIV for <18 months and 15 HIV-seronegative controls were vaccinated with the 23-valent pure polysaccharide pneumococcal vaccine and the Haemophilus influenzae type b (Hib) capsular polysaccharide diphtheria CRM,,, protein toroid conjugate vaccine in separate arms, Despite increased levels of total serum IgG, recent seroconverters and controls showed similar specific IgG responses for 6 of 7 antigens, Baseline levels were equivalent in both groups, as were peak levels of IgG at 1 month to conjugated polysaccharide (Hib), delayed-type hypersensitivity, and pneumococcal capsular serotypes 4, 6B, 12F, and 14, At 6 months, IgG levels were similar for 4 of 7 antigens. Antibody responses to pure pneumococcal capsular polysaccharides and to a protein recall antigen were most often similar among recent seroconverters and seronegative controls, Both total levels and fold-rises of IgC to the Hib conjugate were similar in the 2 groups, Immunization of HIV-infected patients soon after seroconversion rather than later appears to improve antibody responses. C1 UNIV MINNESOTA, VET ADM MED CTR,SCH MED,DEPT MED,INFECT DIS SECT, MINNEAPOLIS, MN 55417 USA. USN, MED CTR, DEPT INTERNAL MED, DIV INFECT DIS, SAN DIEGO, CA USA. USN, MED CTR, DEPT CLIN INVEST, SAN DIEGO, CA USA. FU NIAID NIH HHS [AI-31373] NR 42 TC 53 Z9 53 U1 0 U2 0 PU OXFORD UNIV PRESS INC PI CARY PA JOURNALS DEPT, 2001 EVANS RD, CARY, NC 27513 USA SN 0022-1899 EI 1537-6613 J9 J INFECT DIS JI J. Infect. Dis. PD MAY PY 1995 VL 171 IS 5 BP 1217 EP 1222 PG 6 WC Immunology; Infectious Diseases; Microbiology SC Immunology; Infectious Diseases; Microbiology GA QU640 UT WOS:A1995QU64000020 PM 7751696 ER PT J AU BARRETT, DJ AF BARRETT, DJ TI A ONE-DIMENSIONAL CONSTITUTIVE MODEL FOR SHAPE-MEMORY ALLOYS SO JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES LA English DT Article AB This paper describes a constitutive model for the one-dimensional analysis of shape memory alloys. The model can treat thermal loads, mechanical loads, residual stresses and the temperature and phase change dependence of the material properties. Unique features of the model include phase change hardening, hysteresis with partial transformations and tension-compression transformations. The model differentiates between stress induced and temperature induced transformation strains and introduces the importance of accounting for the tension-compression phase change history. The paper discusses these features and presents several analytical predictions. RP BARRETT, DJ (reprint author), USN,CTR AIR WARFARE,DIV AIRCRAFT,ADV STRUCT TECHNOL BRANCH,CODE 4331R,WARMINSTER,PA 18974, USA. NR 16 TC 15 Z9 15 U1 0 U2 0 PU TECHNOMIC PUBL CO INC PI LANCASTER PA 851 NEW HOLLAND AVE, BOX 3535, LANCASTER, PA 17604 SN 1045-389X J9 J INTEL MAT SYST STR JI J. Intell. Mater. Syst. Struct. PD MAY PY 1995 VL 6 IS 3 BP 329 EP 337 PG 9 WC Materials Science, Multidisciplinary SC Materials Science GA RD585 UT WOS:A1995RD58500004 ER PT J AU MCCARTHY, MC KHALID, IO ELTIGANI, A AF MCCARTHY, MC KHALID, IO ELTIGANI, A TI HIV-1 INFECTION IN JUBA, SOUTHERN SUDAN SO JOURNAL OF MEDICAL VIROLOGY LA English DT Article DE HIV-1 ANTIBODIES; AFRICA; SUDAN POPULATION ID HUMAN IMMUNODEFICIENCY VIRUS; SEXUALLY-TRANSMITTED DISEASES; AFRICA; ZAIRE; AIDS AB Thirty years of civil war in the Sudan have resulted in the isolation of the southern provinces which border Central and East Africa. Consequently, little is known about the epidemiology of HIV-1 infection in this region. To estimate the prevalence of HIV-1 infection in southern Sudan and the risk factors associated with disease transmission, a seroepidemiologic survey was conducted in the township of Juba. Study subjects invited to participate in this study included medical outpatients, inpatients hospitalized for active tuberculosis, and female prostitutes. A total of 401 subjects participated in the study. HIV-1 infection was confirmed in 25 subjects. The prevalence of HIV-1 infection was 19% (8/42) among tuberculosis patients, 16% (8/50) among prostitutes, and 3% (9/309) among outpatients. A significantly higher prevalence of HIV-1 infection was found among female prostitutes when compared to female outpatients: 16% (8/50) vs. 2% (4/178), P < 0.001. Correspondingly, the prevalence of seropositives was significantly higher among male outpatients reporting a history of sexual relations with prostitutes during the prior 10 years compared to male outpatients denying relations with prostitutes: 14% (5/37) vs. 0% (0/94), P = 0.001. A history of a sexually transmitted disease (STD) was also associated with HIV-1 infection among male outpatients. The findings of this study indicate that HIV-1 infection is highly prevalent in southern Sudan and that prostitutes and their sexual partners represent a major reservoir of HIV infection in this population. This epidemiologic pattern resembles that seen in the African nations neighboring southern Sudan. Further spread of HIV-1 to northern Sudan could occur because of the movement of military personnel and refugees between the North and South of Sudan. (C) 1995 Wiley-Liss, Inc.(*) C1 USN,MED RES UNIT 3,CAIRO,EGYPT. MINIST HLTH SUDAN,KHARTOUM,SUDAN. NR 10 TC 13 Z9 13 U1 0 U2 2 PU WILEY-LISS PI NEW YORK PA DIV JOHN WILEY & SONS INC 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0146-6615 J9 J MED VIROL JI J. Med. Virol. PD MAY PY 1995 VL 46 IS 1 BP 18 EP 20 DI 10.1002/jmv.1890460105 PG 3 WC Virology SC Virology GA QV462 UT WOS:A1995QV46200004 PM 7623001 ER PT J AU SPARGO, BJ CLIFF, RO ROLLWAGEN, FM RUDOLPH, AS AF SPARGO, BJ CLIFF, RO ROLLWAGEN, FM RUDOLPH, AS TI CONTROLLED-RELEASE OF TRANSFORMING GROWTH-FACTOR-BETA FROM LIPID-BASED MICROCYLINDERS SO JOURNAL OF MICROENCAPSULATION LA English DT Article DE CONTROL RELEASE; WOUND REPAIR; MICROCYLINDERS; TRANSFORMING GROWTH FACTOR-BETA ID BEHAVIOR; DELIVERY AB The release of transforming growth factor-beta (TGF-beta) from a lipid microstructure has been demonstrated. Lipid microcylinders, with dimensions of 100 X 0.5 mu m and composed of a diacetylenic lipid, have been loaded with 25 ng TGF-beta/mg lipid. Physical and bioactive release characteristics of TGF-beta from these microcylinders and from microcylinders embedded in an agarose hydrogel are reported. Release of TGF-beta from lipid microcylinders follows typical diffusion-limited characteristics, where 10-12% of the TGF is released in the first 10 h at 37 degrees C. The release rate is shown to be temperature controlled and dependent on the integrity of the lipid microcylinder. Immobilization of the lipid microcylinder in a hydrogel matrix composed of agarose and gelatin does not impair the diffusion of TGF-beta from the lipid microcylinders. The utilization of microcylinders as release vehicles in wound repair is discussed. C1 GEOCENTERS INC,FT WASHINGTON,MD 20744. USN,MED RES INST,WOUND REPAIR ENHANCEMENT PROGRAM,BETHESDA,MD 20889. RP SPARGO, BJ (reprint author), USN,RES LAB,CTR BIOMOLEC SCI & ENGN,CODE 6900,WASHINGTON,DC 20375, USA. NR 19 TC 29 Z9 29 U1 1 U2 3 PU TAYLOR & FRANCIS LTD LONDON PI LONDON PA ONE GUNDPOWDER SQUARE, LONDON, ENGLAND EC4A 3DE SN 0265-2048 J9 J MICROENCAPSUL JI J. Microencapsul. PD MAY-JUN PY 1995 VL 12 IS 3 BP 247 EP 254 DI 10.3109/02652049509010293 PG 8 WC Chemistry, Applied; Engineering, Chemical; Pharmacology & Pharmacy SC Chemistry; Engineering; Pharmacology & Pharmacy GA QY609 UT WOS:A1995QY60900002 PM 7650589 ER PT J AU MONSHIPOURI, M PRICE, RR AF MONSHIPOURI, M PRICE, RR TI EMULSIFICATION PREPARATION OF CALCIUM ALGINATE BEADS IN THE PRESENCE OF SEQUESTERANT SO JOURNAL OF MICROENCAPSULATION LA English DT Article DE MICROENCAPSULATION; CELLS; ALGINATE SEQUESTERANT; BIOCOMPATIBLE; ENZYME ID MICROBIAL-CELLS AB A biocompatible emulsification method has been developed for microencapsulation of live cells and enzymes within a calcium alginate matrix. Fabrication of alginate beads was achieved by premixing a sequestering agent (sodium polyphosphate) and the calcium source (calcium sulphate) with the hydrogel monomer prior to the introduction to the oil phase. The competition between the sequesterant and sodium alginate in binding the available calcium ions results in a slowing down of the rate of polymerization and thereby lead to a successful calcium alginate bead formation. The mean diameter of the fabricated beads may be easily controlled by employing soy bean lecithin as an emulsifier. The polymerization time in this process may vary between 3 and 35 min depending on the ratio of sequesterant to that of calcium source at constant sodium alginate concentration. This preparation method avoids the use of pH extremes at all times and therefore is particularly suitable for encapsulating pH-sensitive cells and enzymes. C1 USN,RES LAB,CTR BIOMOLEC SCI & ENGN,WASHINGTON,DC 20375. RP MONSHIPOURI, M (reprint author), GEOCENTERS INC,10903 INDIAN HEAD HIGHWAY,FT WASHINGTON,MD 20744, USA. NR 22 TC 11 Z9 15 U1 1 U2 9 PU TAYLOR & FRANCIS LTD LONDON PI LONDON PA ONE GUNDPOWDER SQUARE, LONDON, ENGLAND EC4A 3DE SN 0265-2048 J9 J MICROENCAPSUL JI J. Microencapsul. PD MAY-JUN PY 1995 VL 12 IS 3 BP 255 EP 262 DI 10.3109/02652049509010294 PG 8 WC Chemistry, Applied; Engineering, Chemical; Pharmacology & Pharmacy SC Chemistry; Engineering; Pharmacology & Pharmacy GA QY609 UT WOS:A1995QY60900003 PM 7650590 ER PT J AU LAVOIE, DM LITTLE, BJ RAY, RI BENNETT, RH LAMBERT, MW ASPER, V BAERWALD, RJ AF LAVOIE, DM LITTLE, BJ RAY, RI BENNETT, RH LAMBERT, MW ASPER, V BAERWALD, RJ TI ENVIRONMENTAL SCANNING ELECTRON-MICROSCOPY OF MARINE AGGREGATES SO JOURNAL OF MICROSCOPY-OXFORD LA English DT Article DE ENVIRONMENTAL SCANNING ELECTRON MICROSCOPY; ESEM; MARINE AGGREGATES ID SEM AB Marine aggregates were examined for the first time in the hydrated state using an environmental scanning electron microscope (ESEM). Sample preparation consisted of fixation followed by rinsing with distilled water to remove excess salts and fixative. Aggregates were continuously observed at resolutions comparable to conventional scanning electron microscopy through stages of hydration, from completely immersed to desiccated. Because no metallic coating is required, energy-dispersive X-ray spectroscopy (EDXS) can be used to analyse rapidly constituent elements occurring at low concentrations with no spectral interference. Subtle differences in mineral particles were seen in both EDXS spectra and in direct observation of relative hydration, reflecting apparent differences in mineralogy, ESEM enabled-examination of effects of desiccation and rehydration on individual particles composed primarily of hydrated polymer and eliminated dehydration artefacts in delicate organisms. C1 UNIV SO MISSISSIPPI,CTR MARINE SCI,BAY ST LOUIS,MS 39529. UNIV NEW ORLEANS,DEPT BIOL,NEW ORLEANS,LA 70148. RP LAVOIE, DM (reprint author), USN,RES LAB,CODE 7333,BAY ST LOUIS,MS 39529, USA. NR 7 TC 15 Z9 15 U1 0 U2 0 PU BLACKWELL SCIENCE LTD PI OXFORD PA OSNEY MEAD, OXFORD, OXON, ENGLAND OX2 0EL SN 0022-2720 J9 J MICROSC-OXFORD JI J. Microsc.-Oxf. PD MAY PY 1995 VL 178 BP 101 EP 106 PN 2 PG 6 WC Microscopy SC Microscopy GA RA029 UT WOS:A1995RA02900002 ER PT J AU OWENS, AL DENISON, TJ VERSNEL, H REBBERT, M PECKERAR, M SHAMMA, SA AF OWENS, AL DENISON, TJ VERSNEL, H REBBERT, M PECKERAR, M SHAMMA, SA TI MULTIELECTRODE ARRAY FOR MEASURING EVOKED-POTENTIALS FROM SURFACE OF FERRET PRIMARY AUDITORY-CORTEX SO JOURNAL OF NEUROSCIENCE METHODS LA English DT Article DE MULTIELECTRODE; PRIMARY AUDITORY CORTEX; EVOKED POTENTIAL; (FERRET) ID FUNCTIONAL TOPOGRAPHY AB Using silicon-integrated circuit technology, we have fabricated a:flexible multi-electrode array and used it for measuring evoked potentials at the surface of the ferret primary auditory cortex (AI). Traditionally, maps of cortical activity are recorded from numerous sequential penetrations with a single electrode. A common problem with this approach is that the state of the cortex (defined in part by level of anesthesia and number of active cells) changes during the time required to generate these maps, The multi-electrode array reduces this problem by allowing the recording of 24 locations simultaneously. The specific array described in this report is designed to record cortical activity over a 1 mm(2) area. It is comprised of 24 gold electrodes (40 x 40 mu m(2)) each spaced 210 mu m apart. These electrodes are connected to contact pads via gold leads (5 cm in length). The electrodes, leads, and contact pads are sandwiched between two layers of polyimide. The polyimide passivates the device and makes the device flexible enough to conform to the shape of the cortex. The fabrication procedures described here allow various other layouts and areas to be readily implemented. Measurements of the electrical properties of the electrodes, together with details of the multichannel amplification, acquisition, and display of the data: are also discussed. Finally, results of AI mapping experiments with these arrays are illustrated. C1 USN,RES LAB,NANOELECTR PROC FACIL,WASHINGTON,DC 20375. RP OWENS, AL (reprint author), UNIV MARYLAND,SYST RES INST,DEPT ELECT ENGN,COLLEGE PK,MD 20742, USA. RI Shamma, Shihab/F-9852-2012 NR 18 TC 26 Z9 28 U1 1 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0165-0270 J9 J NEUROSCI METH JI J. Neurosci. Methods PD MAY PY 1995 VL 58 IS 1-2 BP 209 EP 220 DI 10.1016/0165-0270(94)00178-J PG 12 WC Biochemical Research Methods; Neurosciences SC Biochemistry & Molecular Biology; Neurosciences & Neurology GA RA403 UT WOS:A1995RA40300025 PM 7475229 ER PT J AU GUTMARK, EJ SCHADOW, KC NINA, MNR PITA, GPA AF GUTMARK, EJ SCHADOW, KC NINA, MNR PITA, GPA TI SUPPRESSION OF COMBUSTION INSTABILITY BY GEOMETRICAL DESIGN OF THE BLUFF-BODY STABILIZER SO JOURNAL OF PROPULSION AND POWER LA English DT Article ID AXISYMMETRIC BAFFLES; FLOW; ENHANCEMENT; TURBULENCE; VELOCITY; DUMP AB Passive Control methods were used to suppress combustion instability in a combustor with a bluff-body stabilizer. The instabilities in this combustor are excited by interaction between vortices shed downstream of the stabilizer and the combustion chamber acoustic modes. The passive control methodology was to change the geometrical design of the stabilizer in a manner that will disrupt the formation or reduce the coherence of the wake vortices, thus eliminating the source of the instability excitation. Two geometrical designs were tested and compared to the regular baseline disk stabilizer. The first was a corrugated stabilizer that promotes the shedding of longitudinal vortices from the stabilizer's base. These vortices induce azimuthal instability in the axisymmetric wake vortices and accelerates their breakdown. The second configuration was a multistep cone that was shown to enhance the production of small-scale turbulence in the flow, Both methods were effective in the suppression of the pressure oscillations and reduced significantly the range of unstable combustion without adversely affecting the lean and rich flammability limits. The optimal configuration was the multistepped cone stabilizer. The orientation of the stabilizers and the effect of central ventilations were studied as well as the instability mode characteristics. C1 Univ Tecn Lisboa, DEPT ENGN MECH, INST SUPER TECN, P-1096 LISBON, PORTUGAL. RP GUTMARK, EJ (reprint author), USN, CTR WARFARE, DIV WEAP, RES DEPT, CHINA LAKE, CA 93555 USA. NR 16 TC 3 Z9 3 U1 0 U2 2 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA SN 0748-4658 J9 J PROPUL POWER JI J. Propul. Power PD MAY-JUN PY 1995 VL 11 IS 3 BP 456 EP 463 DI 10.2514/3.23865 PG 8 WC Engineering, Aerospace SC Engineering GA QZ089 UT WOS:A1995QZ08900009 ER PT J AU KUSHNIR, O IZQUIERDO, LA SMITH, JF BLANKSTEIN, J CURET, LB AF KUSHNIR, O IZQUIERDO, LA SMITH, JF BLANKSTEIN, J CURET, LB TI TRANSVAGINAL SONOGRAPHIC MEASUREMENT OF CERVICAL LENGTH - EVALUATION OF TWIN PREGNANCIES SO JOURNAL OF REPRODUCTIVE MEDICINE LA English DT Article DE ULTRASONOGRAPHY; TWINS ID UTERINE ACTIVITY; GESTATIONS AB Twin gestations continue to contribute significantly to perinatal morbidity and mortality. The increased perinatal risks associated with twin gestations are directly related to prematurity. Thus, further characterization of the risks of prematurity may yield useful information in managing these patients. We investigated transvaginal ultrasound measurement of the cervix throughout twin gestations and compared these findings to those in singleton pregnancies. Twenty-five patients with twin gestations underwent 53 cervical length measurements, As compared to cervical length in singleton pregnancies, that in twins was significantly shorter for matched gestational age groups. C1 MT SINAI MED CTR,DEPT OBSTET & GYNECOL,CLEVELAND,OH 44106. UNIV NEW MEXICO HOSP,DEPT OBSTET & GYNECOL,DIV MATERNAL FETAL MED,ALBUQUERQUE,NM. USN HOSP,DEPT OBSTET & GYNECOL,PORTSMOUTH,VA. NR 10 TC 34 Z9 35 U1 0 U2 1 PU SCI PRINTERS & PUBL INC PI ST LOUIS PA P.O. DRAWER 12425 8342 OLIVE BLVD, ST LOUIS, MO 63132 SN 0024-7758 J9 J REPROD MED JI J. Reprod. Med. PD MAY PY 1995 VL 40 IS 5 BP 380 EP 382 PG 3 WC Obstetrics & Gynecology SC Obstetrics & Gynecology GA QY127 UT WOS:A1995QY12700011 PM 7608880 ER PT J AU EKATERINARIS, JA AF EKATERINARIS, JA TI ANALYSIS OF FLOWFIELDS OVER MISSILE CONFIGURATIONS AT SUBSONIC SPEEDS SO JOURNAL OF SPACECRAFT AND ROCKETS LA English DT Article ID FLOW AB Flowfields over missile configurations at subsonic speeds and high angle of attack are computed with a Navier-Stokes flow solver using oversee grids. The accuracy of the computed solutions is first validated for flows at high incidence over a fuselage-wing and a fuselage-canard-wing configuration. The effects of grid density and turbulent versus laminar solutions are assessed by comparison with detailed experimental surface pressures. Development of vortex breakdown over the wing is predicted in accordance with the experiment. Delay of vortex breakdown over the wing caused by the presence of the canard was also captured by the numerical solution. The computed surface pressures are in good agreement with the experiment. Solutions for a complete missile configuration with fms and tails at 45-deg roll are also obtained for subsonic flow at high incidence. The computed normal force and pitching moment are in good agreement with available measurements. The effect of the fin deflection on the development of the vortical flowfield is investigated. It is found that the flowfield in the fin and gap regions can be of primary importance to the overall development of the forebody flowfield. RP EKATERINARIS, JA (reprint author), USN,POSTGRAD SCH,DEPT AERONAUT & ASTRONAUT,MONTEREY,CA 93943, USA. NR 19 TC 9 Z9 11 U1 1 U2 2 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 MAY-JUN PY 1995 VL 32 IS 3 BP 385 EP 391 DI 10.2514/3.26626 PG 7 WC Engineering, Aerospace SC Engineering GA RC460 UT WOS:A1995RC46000001 ER PT J AU COLLINS, MD COURY, RA SIEGMANN, WL AF COLLINS, MD COURY, RA SIEGMANN, WL TI BEACH ACOUSTICS SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA LA English DT Article ID CONSERVING PARABOLIC EQUATION; OCEAN; PROPAGATION C1 RENSSELAER POLYTECH INST,TROY,NY 12180. RP COLLINS, MD (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 16 TC 10 Z9 10 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0001-4966 J9 J ACOUST SOC AM JI J. Acoust. Soc. Am. PD MAY PY 1995 VL 97 IS 5 BP 2767 EP 2770 DI 10.1121/1.413042 PN 1 PG 4 WC Acoustics; Audiology & Speech-Language Pathology SC Acoustics; Audiology & Speech-Language Pathology GA QY601 UT WOS:A1995QY60100015 ER PT J AU CORSARO, RD YOUNG, RM AF CORSARO, RD YOUNG, RM TI INFLUENCE OF BACKING COMPLIANCE ON TRANSDUCER PERFORMANCE SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA LA English DT Article C1 SFA INC,LANDOVER,MD 20785. RP CORSARO, RD (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 11 TC 9 Z9 9 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 MAY PY 1995 VL 97 IS 5 BP 2849 EP 2854 DI 10.1121/1.413101 PN 1 PG 6 WC Acoustics; Audiology & Speech-Language Pathology SC Acoustics; Audiology & Speech-Language Pathology GA QY601 UT WOS:A1995QY60100022 ER PT J AU RUCKMAN, CE FULLER, CR AF RUCKMAN, CE FULLER, CR TI A REGRESSION APPROACH FOR SIMULATING FEEDFORWARD ACTIVE NOISE-CONTROL SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA LA English DT Article ID ENCLOSED SOUND FIELDS; VIBRATION INPUTS; RADIATION; MINIMIZATION; PLATES C1 VIRGINIA POLYTECH INST & STATE UNIV,VIBRAT LAB,BLACKSBURG,VA 24061. VIRGINIA POLYTECH INST & STATE UNIV,ACOUST LAB,BLACKSBURG,VA 24061. RP RUCKMAN, CE (reprint author), USN,CTR SURFACE WARFARE,STRUCT ACOUST & HYDROACOUST RES BRANCH,DIV CARDEROCK,BETHESDA,MD 20084, USA. NR 31 TC 2 Z9 2 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 MAY PY 1995 VL 97 IS 5 BP 2906 EP 2918 DI 10.1121/1.411857 PN 1 PG 13 WC Acoustics; Audiology & Speech-Language Pathology SC Acoustics; Audiology & Speech-Language Pathology GA QY601 UT WOS:A1995QY60100029 ER PT J AU SKELTON, HG SMITH, KJ LASKIN, WB MCCARTHY, WF GAGNIER, JM GRAHAM, JH LUPTON, GP AF SKELTON, HG SMITH, KJ LASKIN, WB MCCARTHY, WF GAGNIER, JM GRAHAM, JH LUPTON, GP TI DESMOPLASTIC MALIGNANT-MELANOMA SO JOURNAL OF THE AMERICAN ACADEMY OF DERMATOLOGY LA English DT Article ID NEUROTROPIC MELANOMA; PROGNOSTIC FACTORS; VARIANT; CELL AB Background: Desmoplastic malignant melanoma (DMM) is an uncommon variant of malignant melanoma and often is difficult to diagnose. Because of the relative rarity of this tumor, it has not been well studied and controversy remains concerning its biologic potential. Objective: We compared survival rates of DMM with those of other malignant melanomas and determined what clinical and/or histologic features, if any, correlated with survival. Methods: The files of the Armed Forces Institute of Pathology were searched for cases of DMM or related tumors with adequate material for further histologic and immunohistochemical evaluation. Follow-up on each patient was requested from the pathologist, clinician, and/or the patient. The follow-up was correlated with the histologic findings in each case. The relationship of histologic features to disease-free survival was evaluated. Results: Adequate material for evaluation was available in 128 cases. The overall histologic features were similar to those previously reported. Immunohistochemical studies showed that all lesions were negative for HMB-45, a marker for premelanosomes. Factors that correlated with survival included tumor location, sex, tumor depth, and the presence of stromal mucin. The 5-year disease-free survival rate was 68% for all cases and 61% for lesions more than 4 mm deep. Conclusion: With a 5-year disease-free survival rate of 61%, DMM has a significantly better prognosis than other melanomas that have a 5-year disease-free survival rates of 40% to 41%. This may be related to neural differentiation of these tumors. C1 USA,RES LOGIST & ACQUIST COMMAND,BETHESDA,MD. US HLTH SCI MED SCH,DEPT ANAT PATHOL,BETHESDA,MD. USN HOSP,DEPT SURG,BETHESDA,MD. SCRIPPS CLIN & RES FDN,DEPT PATHOL,DIV DERMATOPATHOL,LA JOLLA,CA. RP SKELTON, HG (reprint author), ARMED FORCES INST PATHOL,DEPT DERMATOPATHOL,WASHINGTON,DC 20306, USA. NR 31 TC 105 Z9 106 U1 0 U2 0 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0190-9622 J9 J AM ACAD DERMATOL JI J. Am. Acad. Dermatol. PD MAY PY 1995 VL 32 IS 5 BP 717 EP 725 DI 10.1016/0190-9622(95)91448-X PN 1 PG 9 WC Dermatology SC Dermatology GA QW104 UT WOS:A1995QW10400004 PM 7722014 ER PT J AU SMITH, SR KIRKPATRICK, RC KERR, JH MEZEBICH, D AF SMITH, SR KIRKPATRICK, RC KERR, JH MEZEBICH, D TI ALOPECIA-AREATA IN A PATIENT WITH PILI ANNULATI SO JOURNAL OF THE AMERICAN ACADEMY OF DERMATOLOGY LA English DT Note C1 USN,MED CTR,DEPT DERMATOL,SAN DIEGO,CA 92134. RP SMITH, SR (reprint author), USN,MED CTR,DEPT CLIN INVEST,SAN DIEGO,CA 92134, USA. NR 7 TC 10 Z9 10 U1 0 U2 0 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0190-9622 J9 J AM ACAD DERMATOL JI J. Am. Acad. Dermatol. PD MAY PY 1995 VL 32 IS 5 BP 816 EP 818 DI 10.1016/0190-9622(95)91486-2 PN 1 PG 3 WC Dermatology SC Dermatology GA QW104 UT WOS:A1995QW10400025 PM 7722034 ER PT J AU DOCIMO, SG REMMENGA, S SEGNE, R DMOCHOWSKI, RR AF DOCIMO, SG REMMENGA, S SEGNE, R DMOCHOWSKI, RR TI HYSTERECTOMY BY THE TRANSVAGINAL APPROACH AFTER INTESTINAL BLADDER AUGMENTATION AND PSOAS HITCH REIMPLANTATION SO JOURNAL OF THE AMERICAN COLLEGE OF SURGEONS LA English DT Note ID PREGNANCY; CYSTOPLASTY C1 JOHNS HOPKINS UNIV,SCH MED,DEPT UROL,BALTIMORE,MD 21205. USN HOSP,DEPT OBSTET,DIV GYNECOL ONCOL,PORTSMOUTH,VA. KAISER PERMANENTE,DEPT UROL,LOS ANGELES,CA. NR 7 TC 0 Z9 0 U1 0 U2 0 PU AMER COLL SURGEONS PI CHICAGO PA 54 EAST ERIE ST, CHICAGO, IL 60611 SN 1072-7515 J9 J AM COLL SURGEONS JI J. Am. Coll. Surg. PD MAY PY 1995 VL 180 IS 5 BP 610 EP 612 PG 3 WC Surgery SC Surgery GA QW522 UT WOS:A1995QW52200017 PM 7749540 ER PT J AU MCCAFFERTY, E MCARDLE, JV AF MCCAFFERTY, E MCARDLE, JV TI CORROSION INHIBITION OF IRON IN ACID-SOLUTIONS BY BIOLOGICAL SIDEROPHORES SO JOURNAL OF THE ELECTROCHEMICAL SOCIETY LA English DT Article ID COORDINATION CHEMISTRY; TRANSPORT COMPOUNDS; ENTEROBACTIN; BEHAVIOR; SURFACE; ELECTROCHEMISTRY; CAPACITANCE; ADSORPTION; CONSTANTS; COMPLEXES AB Four siderophores isolated from bacteria have been studied as possible corrosion inhibitors for iron in deareated 1N HCl. These compounds are aerobactin, enterobactin, parabactin, and rhodotorulic acid. Polarization measurements and ac impedance studies show that all four compounds are inhibitors, with the order of effectiveness being rhodotorulic acid < aerobactin < enterobactin < parabactin. X-ray photoelectron spectroscopy surface analysis with one of the siderophores, rhodotorulic acid, shows that it chemisorbs at the iron/HCl interface. Enterobactin and parabactin are the most effective corrosion inhibitors of the four because they have the optimum combination of relatively high values of pK(al) and the largest molecular cross-sectional areas. C1 UNIV MARYLAND,DEPT CHEM,COLLEGE PK,MD 20742. RP MCCAFFERTY, E (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 34 TC 12 Z9 12 U1 0 U2 4 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 10 SOUTH MAIN STREET, PENNINGTON, NJ 08534 SN 0013-4651 J9 J ELECTROCHEM SOC JI J. Electrochem. Soc. PD MAY PY 1995 VL 142 IS 5 BP 1447 EP 1453 DI 10.1149/1.2048595 PG 7 WC Electrochemistry; Materials Science, Coatings & Films SC Electrochemistry; Materials Science GA QX765 UT WOS:A1995QX76500019 ER PT J AU STECKL, AJ XU, J MOGUL, HC PROKES, SM AF STECKL, AJ XU, J MOGUL, HC PROKES, SM TI SI OXYHYDRIDES ON STAIN-ETCHED POROUS SI THIN-FILMS AND CORRELATION WITH CRYSTALLINITY AND PHOTOLUMINESCENCE SO JOURNAL OF THE ELECTROCHEMICAL SOCIETY LA English DT Letter ID SILICON SURFACES; LIGHT-EMISSION; LUMINESCENCE; DECOMPOSITION; SPECTROSCOPY; HYDROGEN; FTIR AB Porous Si has been fabricated from amorphous and polycrystalline Si films by stain-etching in HF:HNO3:H2O. Infrared transmission measurements have revealed an absorption peak at 880-890 cm(-1) only in crystalline porous Si samples. This peak is probably due to an SIH, bending mode in the presence of oxygen. Similarly, only crystalline PoSi films exhibit visible (similar to 650-670 nm) photoluminescence under UV excitation. Amorphous PoSi samples do not luminesce even after very long etch times, in spite of greatly increased porosity. Therefore, it appears that there exists a unique correlation between the presence of crystallinity in the starting Si film and the presence of surface oxyhydrides and photoluminescence after stain-etching. C1 USN,RES LAB,WASHINGTON,DC 20375. RP STECKL, AJ (reprint author), UNIV CINCINNATI,DEPT ELECT & COMP ENGN,NANOELECTR LAB,CINCINNATI,OH 45221, USA. NR 20 TC 28 Z9 28 U1 1 U2 2 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 MAY PY 1995 VL 142 IS 5 BP L69 EP L71 DI 10.1149/1.2048652 PG 3 WC Electrochemistry; Materials Science, Coatings & Films SC Electrochemistry; Materials Science GA QX765 UT WOS:A1995QX76500002 ER PT J AU FRIED, DL AF FRIED, DL TI ANALYSIS OF THE CLEAN ALGORITHM AND IMPLICATIONS FOR SUPERRESOLUTION SO JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION LA English DT Article AB The capability of the CLEAN algorithm, which is able to develop image information corresponding to spatial frequencies for which the imaging system's optical transfer function (OTF) is equal to zero, is shown to be dependent on the limited size of the object being imaged. It is found that this capability is available without a severe signal-to-noise-ratio penalty only for the recovery of a spatial frequency that is sufficiently close to some other spatial frequency for which the OTF is not equal to zero. As used here the term ''sufficiently close'' means that the magnitude of the separation of the spatial frequencies is less than one half of the inverse of the size of the object being imaged. This represents a limitation of CLEAN's capability deriving from object size. It is suggested that this capability can he thought of in terms of superresolution, with the same limitation in regard to object size. RP FRIED, DL (reprint author), USN,POSTGRAD SCH,DEPT PHYS,MONTEREY,CA 93943, USA. NR 14 TC 23 Z9 23 U1 1 U2 1 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 MAY PY 1995 VL 12 IS 5 BP 853 EP 860 DI 10.1364/JOSAA.12.000853 PG 8 WC Optics SC Optics GA QV029 UT WOS:A1995QV02900004 ER PT J AU FRIED, DL AF FRIED, DL TI FOCUS ANISOPLANATISM IN THE LIMIT OF INFINITELY MANY ARTIFICIAL-GUIDE-STAR REFERENCE SPOTS SO JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION LA English DT Article ID OPTICS; LIGHT AB The concept that the focus anisoplanatism effect, which limits the useful diameter of an adaptive-optics system that relies on an artificial guide star [(AGS), a laser atmospheric backscatter spot] as a reference source for determining the turbulence-induced wave-front distortion, can be eliminated (or greatly reduced) by use of a multiplicity of AGS spots is evaluated. The case of an infinite density of such spots with an infinite density of wave-front sensor subapertures (each infinitely small) is analyzed assuming that performance is limited only by the fact that turbulence is distributed along the propagation path rather than being contained in a single plane. It is found that even in this case focus anisoplanatism limits performance. Relative to what can be achieved with a single AGS spot, it is found that at most approximately a factor-of-2.5 increase in the useful aperture diameter can be obtained by use of infinitely many AGS spots and that this increase is available only for a laser backscatter altitude as high as the 90-km mesospheric sodium layer. RP FRIED, DL (reprint author), USN,POSTGRAD SCH,DEPT PHYS,MONTEREY,CA 93943, USA. NR 14 TC 17 Z9 17 U1 0 U2 1 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 MAY PY 1995 VL 12 IS 5 BP 939 EP 949 DI 10.1364/JOSAA.12.000939 PG 11 WC Optics SC Optics GA QV029 UT WOS:A1995QV02900013 ER PT J AU FRIED, DL AF FRIED, DL TI HORIZON IRREGULARITY INDUCED BY TURBULENCE SO JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION LA English DT Article DE TURBULENCE; IMAGE DISTORTION; HORIZON; APPARENT IRREGULARITY; TARGET DETECTION AB At any instant the optical effects of atmospheric turbulence can result in a somewhat distorted image. As a consequence, the image of the horizon that ought to appear to be a smooth straight line may instead appear somewhat irregular. When we consider turbulence effects we call into question the idea that a small object that we expect to see just above the horizon will stand out (i.e., will be detectable) because it appears as a bump on what is otherwise a smooth straight horizon line. The degree of irregularity that turbulence may be expected to introduce in the image of the horizon is studied, and a theory that permits evaluation of the vertical irregularity as a function of horizontal extent is developed. It is concluded that for a sample case the effect is small but that, for an object close enough to the horizon line, the detection of this object could be interfered with by this effect. RP FRIED, DL (reprint author), USN,POSTGRAD SCH,DEPT PHYS,MONTEREY,CA 93943, USA. NR 2 TC 0 Z9 0 U1 0 U2 0 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 MAY PY 1995 VL 12 IS 5 BP 950 EP 957 DI 10.1364/JOSAA.12.000950 PG 8 WC Optics SC Optics GA QV029 UT WOS:A1995QV02900014 ER PT J AU PELLEGRINO, JG RICHTER, CA DURA, JA AMIRTHARAJ, PM QADRI, SB ROUGHANI, B AF PELLEGRINO, JG RICHTER, CA DURA, JA AMIRTHARAJ, PM QADRI, SB ROUGHANI, B TI BUFFER LAYER-MODULATION-DOPED FIELD-EFFECT-TRANSISTOR INTERACTIONS AL0.33GA0.67AS/GAAS SUPERLATTICE SYSTEM SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A LA English DT Article; Proceedings Paper CT 41st National Symposium of the American-Vacuum-Society CY OCT 24-28, 1994 CL DENVER, CO SP Amer Vacuum Soc ID INTERFACE C1 USN, RES LAB, WASHINGTON, DC 20375 USA. GMI, INST ENGN & MANAGEMENT, FLINT, MI 48504 USA. RP PELLEGRINO, JG (reprint author), NIST, GAITHERSBURG, MD 20899 USA. RI Dura, Joseph/B-8452-2008 OI Dura, Joseph/0000-0001-6877-959X NR 13 TC 2 Z9 2 U1 0 U2 1 PU A V S AMER INST PHYSICS PI MELVILLE PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA SN 0734-2101 J9 J VAC SCI TECHNOL A JI J. Vac. Sci. Technol. A PD MAY-JUN PY 1995 VL 13 IS 3 BP 787 EP 791 DI 10.1116/1.579828 PN 1 PG 5 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA RD766 UT WOS:A1995RD76600056 ER PT J AU KREIFELS, TL HENGEHOLD, RL YEO, YK THOMPSON, PE SIMONS, DS AF KREIFELS, TL HENGEHOLD, RL YEO, YK THOMPSON, PE SIMONS, DS TI SI1-XGEX/SI MULTIPLE-QUANTUM WELLS ON SI(100) AND SI(110) FOR INFRARED-ABSORPTION SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS LA English DT Article; Proceedings Paper CT 41st National Symposium of the American-Vacuum-Society CY OCT 24-28, 1994 CL DENVER, CO SP Amer Vacuum Soc ID MOLECULAR-BEAM EPITAXY; INTERSUBBAND ABSORPTION; SILICON; DETECTOR; MBE C1 USN,RES LAB,WASHINGTON,DC 20375. NATL INST STAND & TECHNOL,GAITHERSBURG,MD 20899. RP KREIFELS, TL (reprint author), USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433, USA. NR 19 TC 7 Z9 7 U1 1 U2 1 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 MAY-JUN PY 1995 VL 13 IS 3 BP 636 EP 641 DI 10.1116/1.579798 PN 1 PG 6 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA RD766 UT WOS:A1995RD76600026 ER PT J AU GILMORE, CM SPRAGUE, JA AF GILMORE, CM SPRAGUE, JA TI A MOLECULAR-DYNAMICS STUDY OF TRANSIENT PROCESSES DURING DEPOSITION ON (001) METAL-SURFACES SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS LA English DT Article; Proceedings Paper CT 41st National Symposium of the American-Vacuum-Society CY OCT 24-28, 1994 CL DENVER, CO SP Amer Vacuum Soc ID EMBEDDED-ATOM-METHOD; EPITAXIAL-GROWTH; BEAM EPITAXY; CU; CU(100) C1 USN,RES LAB,SURFACE MODIFICAT BRANCH,WASHINGTON,DC 20375. RP GILMORE, CM (reprint author), GEORGE WASHINGTON UNIV,SCH ENGN & APPL SCI,INST SCI MAT,WASHINGTON,DC 20052, USA. NR 15 TC 6 Z9 6 U1 1 U2 1 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 MAY-JUN PY 1995 VL 13 IS 3 BP 1160 EP 1164 DI 10.1116/1.579854 PN 1 PG 5 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA RD766 UT WOS:A1995RD76600125 ER PT J AU MELI, CA GRABOWSKI, KS HINSHELWOOD, DD STEPHANAKIS, SJ REJ, DJ WAGANAAR, WJ AF MELI, CA GRABOWSKI, KS HINSHELWOOD, DD STEPHANAKIS, SJ REJ, DJ WAGANAAR, WJ TI FILM DEPOSITION AND SURFACE MODIFICATION USING INTENSE PULSED ION-BEAMS SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS LA English DT Article; Proceedings Paper CT 41st National Symposium of the American-Vacuum-Society CY OCT 24-28, 1994 CL DENVER, CO SP Amer Vacuum Soc C1 LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. RP MELI, CA (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. OI Grabowski, Kenneth/0000-0003-0816-001X NR 12 TC 30 Z9 32 U1 0 U2 1 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 MAY-JUN PY 1995 VL 13 IS 3 BP 1182 EP 1187 DI 10.1116/1.579858 PN 1 PG 6 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA RD766 UT WOS:A1995RD76600129 ER PT J AU BASKI, AA WHITMAN, LJ AF BASKI, AA WHITMAN, LJ TI A SCANNING-TUNNELING-MICROSCOPY STUDY OF HYDROGEN ADSORPTION ON SI(112) SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS LA English DT Article ID SURFACE; GROWTH RP BASKI, AA (reprint author), USN,RES LAB,CODE 6177,WASHINGTON,DC 20375, USA. RI Whitman, Lloyd/G-9320-2011; OI Whitman, Lloyd/0000-0002-3117-1174; Baski, Alison/0000-0002-8985-8067 NR 12 TC 13 Z9 13 U1 0 U2 2 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 MAY-JUN PY 1995 VL 13 IS 3 BP 1469 EP 1472 DI 10.1116/1.579688 PN 2 PG 4 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA RD767 UT WOS:A1995RD76700045 ER PT J AU CHRISEY, DB HORWITZ, JS DORSEY, PC POND, JM AF CHRISEY, DB HORWITZ, JS DORSEY, PC POND, JM TI LASER DEPOSITION OF CERAMICS CREATES HIGH-QUALITY THIN-FILMS SO LASER FOCUS WORLD LA English DT Article AB The technique of using excimer lasers to flash-evaporate ceramic target material provides many advantages over traditional methods. RP CHRISEY, DB (reprint author), USN,RES LAB,4555 OVERLOOK AVE,WASHINGTON,DC 20375, USA. NR 5 TC 1 Z9 1 U1 0 U2 2 PU PENNWELL PUBL CO PI NASHUA PA 5TH FLOOR TEN TARA BOULEVARD, NASHUA, NH 03062-2801 SN 0740-2511 J9 LASER FOCUS WORLD JI Laser Focus World PD MAY PY 1995 VL 31 IS 5 BP 155 EP & PG 0 WC Optics SC Optics GA QY219 UT WOS:A1995QY21900029 ER PT J AU BASHKANSKY, M BATTLE, P MAHON, R REINTJES, J AF BASHKANSKY, M BATTLE, P MAHON, R REINTJES, J TI SPECTRAL AND SPATIAL CHARACTERISTICS OF OPTICALLY PUMPED CASCADE EMISSIONS IN NA VAPOR SO LASER PHYSICS LA English DT Article; Proceedings Paper CT International Workshop on Laser Physics (LPHYS-94) CY OCT 10-14, 1994 CL CUNY, GRAD SCH & UNIV CTR, NEW YORK, NY SP Russian Acad Sci, Gen Phys Inst, Joint Inst Nucl Res Dubna, Columbia Univ, City Coll New York HO CUNY, GRAD SCH & UNIV CTR AB We present experimental results of spectral and spatial properties of the laser-pumped cascade emissions from sodium vapor when the 3S(1/2)-4P(1/2,3/2) transitions of sodium are excited with resonant 330-nm narrowband radiation. We observe a pronounced conical emission of the 3P-3S cascade transition. We propose an explanation for the observations. RP BASHKANSKY, M (reprint author), USN,RES LAB,DIV OPT SCI,LASER PHYS BRANCH,CODE 5640,WASHINGTON,DC 20375, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU INTERPERIODICA PI BIRMINGHAM PA PO BOX 1831, BIRMINGHAM, AL 35201-1831 SN 1054-660X J9 LASER PHYS JI Laser Phys. PD MAY-JUN PY 1995 VL 5 IS 3 BP 474 EP 478 PG 5 WC Optics; Physics, Applied SC Optics; Physics GA RE193 UT WOS:A1995RE19300007 ER PT J AU KENNEY, C HEWER, G AF KENNEY, C HEWER, G TI TRACE NORM BOUNDS FOR STABLE LYAPUNOV OPERATORS SO LINEAR ALGEBRA AND ITS APPLICATIONS LA English DT Article ID EQUATION; RICCATI; SENSITIVITY AB Certain aspects of stable Lyapunov operators can be easily studied by exploiting the linearity of the trace operator and its invariance under reversal of order in matrix products. For example, sharp upper and lower bounds on the trace of solutions to the stable Lyapunov equation can be obtained by applying the trace operator to a well-known integral representation of these solutions. Other applications include using the connection between dual norms and the trace operator to obtain new results on the norms of Lyapunov operators associated with the conditioning of solutions to the Riccati equation. In this regard, trace norm results can be obtained from well-known spectral norm results, since the trace and spectral norms are dual to each other. A somewhat deeper analysis involving the power method gives monotonically decreasing upper bounds on the Frobenius norms of these Lyapunov operators; these upper bounds complement the usual monotonically increasing lower bounds associated with the power method and provide a nice means of assessing the accuracy of the resulting Frobenius norm estimates. C1 USN, CTR WEAP, DEPT RES, CHINA LAKE, CA 93555 USA. RP UNIV CALIF SANTA BARBARA, DEPT ELECT & COMP ENGN, SANTA BARBARA, CA 93106 USA. NR 24 TC 2 Z9 2 U1 0 U2 0 PU ELSEVIER SCIENCE INC PI NEW YORK PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA SN 0024-3795 EI 1873-1856 J9 LINEAR ALGEBRA APPL JI Linear Alg. Appl. PD MAY PY 1995 VL 221 BP 1 EP 18 DI 10.1016/0024-3795(93)00219-P PG 18 WC Mathematics, Applied; Mathematics SC Mathematics GA RC373 UT WOS:A1995RC37300001 ER PT J AU VASUDEVAN, AK SADANANDA, K AF VASUDEVAN, AK SADANANDA, K TI CLASSIFICATION OF FATIGUE-CRACK GROWTH-BEHAVIOR SO METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE LA English DT Article ID STRESS-RATIO; PROPAGATION BEHAVIOR; THRESHOLD; ENVIRONMENT; CLOSURE; INTENSITIES; STEELS; ALLOY AB A self-consistent theory has been developed to account for the variation in fatigue crack growth rates with load ratio, R, without reference to crack closure concepts. The theory states that (a) for an unambiguous description of cyclic damage, two loading parameters are required; (b) consequently, there are two thresholds corresponding to each parameter that must be satisfied for a crack to grow; (c) these two thresholds are intrinsic and are independent of specimen geometry; (d) a fundamental threshold curve can be developed that is independent of test methods defining these two thresholds from the asymptotic values, and last; (e) the two thresholds vary with the degree of slip planarity, microstructure, and environment. Based on these new concepts, we have classified the entire fatigue crack growth behavior into five different classes using the experimental Delta K-th-R data. The characteristic feature of each class is discussed, and the supporting examples of materials behavior are provided. This classification could provide a basis for understanding the synergistic effects of mechanical and chemical driving forces and microstructure contributing to fatigue crack growth. C1 USN,RES LAB,DIV MAT SCI & TECHNOL,WASHINGTON,DC 20375. RP VASUDEVAN, AK (reprint author), OFF NAVAL RES,ARLINGTON,VA 22217, USA. NR 39 TC 78 Z9 78 U1 2 U2 6 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 1073-5623 J9 METALL MATER TRANS A JI Metall. Mater. Trans. A-Phys. Metall. Mater. Sci. PD MAY PY 1995 VL 26 IS 5 BP 1221 EP 1234 DI 10.1007/BF02670617 PG 14 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA QV327 UT WOS:A1995QV32700022 ER PT J AU LEE, EU AF LEE, EU TI SCC PATH IN FORGED AERMET-100 STEEL SO METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE LA English DT Note ID STRESS-CORROSION CRACKING; STAINLESS-STEEL; CHROMIUM DEPLETION; RESISTANCE; ALLOYS RP LEE, EU (reprint author), USN,CTR AIR WARFARE,DIV AIRCRAFT,WARMINSTER,PA 18974, USA. NR 14 TC 11 Z9 13 U1 0 U2 3 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 1073-5623 J9 METALL MATER TRANS A JI Metall. Mater. Trans. A-Phys. Metall. Mater. Sci. PD MAY PY 1995 VL 26 IS 5 BP 1313 EP 1316 DI 10.1007/BF02670628 PG 4 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA QV327 UT WOS:A1995QV32700033 ER PT J AU BLOOD, CC JOLLY, CR AF BLOOD, CC JOLLY, CR TI COMPARISONS OF DISEASE AND NONBATTLE INJURY INCIDENCE ACROSS VARIOUS MILITARY OPERATIONS SO MILITARY MEDICINE LA English DT Article AB Daily rates of disease and nonbattle injury (DNBI) incidence were analyzed and compared for four ground operations: Okinawa, Korea, Vietnam, and the Falklands, Average daily DNBI admission rates among operations ranged from 0.99 per 1,000 strength to 4.03 for combat troops. Average daily admission rates for support troops ranged from 0.71 to 1.15, Among combat troops, between 26 and 38% of DNBI presentations were of a nature that precluded returns to their unit due to a medical transfer; among support troops, less than 17% were not returned to their units due to transfers. RP BLOOD, CC (reprint author), USN,HLTH RES CTR,MED INFORMAT SYST & OPERAT RES DEPT,POB 85122,SAN DIEGO,CA 92186, USA. NR 0 TC 35 Z9 37 U1 0 U2 0 PU ASSN MILITARY SURG US PI BETHESDA PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 SN 0026-4075 J9 MIL MED JI Milit. Med. PD MAY PY 1995 VL 160 IS 5 BP 258 EP 263 PG 6 WC Medicine, General & Internal SC General & Internal Medicine GA RE457 UT WOS:A1995RE45700014 PM 7659217 ER PT J AU BERINSTEIN, TH AMUNDSON, DE AF BERINSTEIN, TH AMUNDSON, DE TI THE PROBLEM CENTRAL VENOUS CATHETER SO MILITARY MEDICINE LA English DT Note AB Central venous catheter complications are an important nosocomial problem. This report outlines three complications of central line placement and provides some insights that may help physicians and surgeons avoid consequential problems with invasive line placement. RP BERINSTEIN, TH (reprint author), USN,NAVAL MED CTR,DEPT CLIN INVEST,SAN DIEGO,CA 92134, USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU ASSN MILITARY SURG US PI BETHESDA PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 SN 0026-4075 J9 MIL MED JI Milit. Med. PD MAY PY 1995 VL 160 IS 5 BP 270 EP 271 PG 2 WC Medicine, General & Internal SC General & Internal Medicine GA RE457 UT WOS:A1995RE45700016 PM 7659219 ER PT J AU SKINNER, AJ LILL, JV BROUGHTON, JQ AF SKINNER, AJ LILL, JV BROUGHTON, JQ TI FREE-ENERGY CALCULATION OF EXTENDED DEFECTS THROUGH SIMULATED ALCHEMY - APPLICATION TO NI3AL ANTIPHASE BOUNDARIES SO MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING LA English DT Article ID SEGREGATION; STABILITY; SOLIDS AB Accurate calculation of the free energy of defects is important in understanding many mechanical processes and properties in materials. Here a method is proposed for directly calculating the free energy difference between bulk crystal and defect multi-component atomic systems. Based on lambda-integration techniques it involves defining a nonphysical but reversible thermodynamic pathway that connects the bulk reference crystal and defect structures. This pathway can be thought of as an alchemic route to the free energy as selected atoms are allowed to transform their atomic character. The method is demonstrated by using it to calculate the free energy of Ni3Al antiphase boundaries where atomic interactions are modeled through a Finnis-Sinclair type potential. C1 USN,RES LAB,COMPLEX SYST THEORY BRANCH,WASHINGTON,DC 20375. NR 27 TC 15 Z9 15 U1 0 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA TECHNO HOUSE, REDCLIFFE WAY, BRISTOL, ENGLAND BS1 6NX SN 0965-0393 J9 MODEL SIMUL MATER SC JI Model. Simul. Mater. Sci. Eng. PD MAY PY 1995 VL 3 IS 3 BP 359 EP 369 DI 10.1088/0965-0393/3/3/005 PG 11 WC Materials Science, Multidisciplinary; Physics, Applied SC Materials Science; Physics GA RA327 UT WOS:A1995RA32700005 ER PT J AU SKINNER, AJ BROUGHTON, JQ AF SKINNER, AJ BROUGHTON, JQ TI NEURAL NETWORKS IN COMPUTATIONAL MATERIALS SCIENCE - TRAINING ALGORITHMS SO MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING LA English DT Article ID INTERATOMIC POTENTIALS; GENETIC ALGORITHMS; SYSTEMS; SILICON; METALS; ORDER AB Neural networks can be used in principle in an unbiased way for a multitude of pattern recognition and interpolation problems within computational material science. Reliably finding the weights of large feed-forward neural networks with both accuracy and speed is crucial to their use. In this paper, the rate of convergence of numerous optimization techniques that can be used to determine the weights is compared for two problems related to the construction of atomistic potentials. Techniques considered were back propagation (steepest descent), conjugate gradient methods, real-string genetic algorithms, simulated annealing and a new swarm search algorithm. For small networks, where only a few optimal solutions exist, we find that conjugate-gradient methods are most successful. However, for larger networks where the parameter space to be searched is more complex, a hybrid scheme is most effective; genetic algorithm or simulated annealing to End a good initial starting set of weights, followed by a conjugate-gradient approach to home in on a final solution. These hybrid approaches are now our method of choice for training large networks. C1 USN,RES LAB,COMPLEX SYST THEORY BRANCH,WASHINGTON,DC 20375. NR 45 TC 36 Z9 36 U1 0 U2 6 PU IOP PUBLISHING LTD PI BRISTOL PA TECHNO HOUSE, REDCLIFFE WAY, BRISTOL, ENGLAND BS1 6NX SN 0965-0393 J9 MODEL SIMUL MATER SC JI Model. Simul. Mater. Sci. Eng. PD MAY PY 1995 VL 3 IS 3 BP 371 EP 390 DI 10.1088/0965-0393/3/3/006 PG 20 WC Materials Science, Multidisciplinary; Physics, Applied SC Materials Science; Physics GA RA327 UT WOS:A1995RA32700006 ER PT J AU HARR, PA ELSBERRY, RL AF HARR, PA ELSBERRY, RL TI LARGE-SCALE CIRCULATION VARIABILITY OVER THE TROPICAL WESTERN NORTH PACIFIC .1. SPATIAL PATTERNS AND TROPICAL CYCLONE CHARACTERISTICS SO MONTHLY WEATHER REVIEW LA English DT Article ID EMPIRICAL ORTHOGONAL FUNCTIONS; MULTIPLE FLOW REGIMES; HEMISPHERE WINTER; PERSISTENT ANOMALIES; PRINCIPAL COMPONENTS; HEIGHT FIELD; GEOGRAPHICAL-DISTRIBUTION; CLUSTER-ANALYSIS; TIME-SCALE; CONVECTION AB The basic structure of the variability of the large-scale circulations over the tropical western Pacific is investigated with respect to its influence on tropical cyclone characteristics. A vector empirical orthogonal function analysis and fuzzy cluster algorithm are applied to a 9-yr dataset to define six recurrent 700-mb circulation patterns that represent large-scale variabilities associated with the monsoon trough and subtropical ridge. Five of the cluster patterns, which contain 48% of the sample, define combinations of active (inactive) monsoon trough and strong (weak) subtropical ridge circulations. The sixth cluster, which contains 26% of the data sample, depicts small deviations from the long-term climatology. After the cluster centers are defined, the fuzzy cluster coefficients are used to identify a seventh cluster, which contains the remaining 26% of the circulation patterns that could not be classified within any of the original six clusters. The 700-mb circulation patterns are physically consistent with outgoing longwave radiation anomalies and the 200-mb streamfunction and velocity potential anomalies. Active and inactive monsoon trough patterns are related to large-scale velocity potential anomalies over the tropical western Pacific and Indian Ocean basins. Anomalous cyclonic circulations are found to be regions of anomalous convergence at 700 mb, divergence at 200 mb, and enhanced large-scale convection. Anticyclonic anomalies are regions of anomalous 700-mb divergence, 200-mb convergence, and reduced large-scale convection. Variability of the subtropical ridge is associated with large-scale, 200-mb streamfunction anomalies that are related to variations in the midlatitude longwave pattern. Tropical cyclone activity is found to be related significantly to the variability of the monsoon trough described within the cluster framework. Active (inactive) periods are found to occur when the large-scale circulation anomalies are contained within clusters that represent an active (inactive) monsoon trough, However, grouping of clusters based exclusively on the variability of the monsoon trough does not adequately account for the variability in tropical cyclone track types. Comparisons between observed tropical cyclone track characteristics and the cluster definition at the rime the tropical cyclone reaches tropical storm strength identify a statistically significant relationship between track type (straight-moving versus recurving) and the individual five cluster patterns that describe the variability of the monsoon trough and subtropical ridge. No relationships are found between tropical cyclone characteristics and the cluster that represents small deviations from the climatological mean or the cluster that is defined to contain circulation patterns not classified in any of the original six clusters. It is concluded that the cluster patterns define the basic structure of large-scale circulation variability over the tropical western Pacific and that these structures are related to tropical cyclone characteristics. RP HARR, PA (reprint author), USN,POSTGRAD SCH,DEPT METEOROL,MONTEREY,CA 93943, USA. NR 54 TC 92 Z9 110 U1 0 U2 5 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 MAY PY 1995 VL 123 IS 5 BP 1225 EP 1246 DI 10.1175/1520-0493(1995)123<1225:LSCVOT>2.0.CO;2 PG 22 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA QV855 UT WOS:A1995QV85500001 ER PT J AU HARR, PA ELSBERRY, RL AF HARR, PA ELSBERRY, RL TI LARGE-SCALE CIRCULATION VARIABILITY OVER THE TROPICAL WESTERN NORTH PACIFIC .2. PERSISTENCE AND TRANSITION CHARACTERISTICS SO MONTHLY WEATHER REVIEW LA English DT Article ID MULTIPLE FLOW REGIMES; HEMISPHERE WINTER; CYCLONE MOTION; DAY-PERIOD; CONVECTION; DISTURBANCES; ANOMALIES; OSCILLATIONS; EXTRATROPICS AB The variability of the large-scale circulation over the tropical western North Pacific is described within a framework defined by recurrent 700-mb circulation patterns that were defined by a fuzzy cluster analysis. Individual cluster patterns (defined in Part I), which represent instantaneous depictions of the circulation variability, define favorable and unfavorable regions for tropical cyclone genesis and preferred track types. The fuzzy cluster coefficients, which describe the time variability of 700-mb large-scale circulation anomalies, are used to identify the basic persistence properties of the recurrent, anomalous circulation patterns. It is found that recurrent circulation patterns that are defined by small anomalies (i.e., close to the center of the cluster analysis phase space) are less persistent than recurrent patterns that represent distinct circulation anomaly patterns. Furthermore, the persistence of a particular sequence of anomaly maps that pass through a cluster is dependent upon the size of the cluster coefficients, which define how well the cluster pattern represents individual anomaly maps. Analysis of transitions between clusters reveals that a rather limited set of transition paths exist. The most significant transition paths occur across a boundary within the cluster analysis phase space that separates circulation patterns that represent an active monsoon trough from patterns that represent an inactive monsoon trough. Physical descriptions of the significant transition paths are based upon 700-mb and 200-mb streamfunction and velocity potential anomalies, and anomalies of outgoing longwave radiation. The primary transition paths are found to be dependent upon interrelationships between several spatial and temporal scales of atmospheric variability. Furthermore, specific relationships were found to be critical for determining which transition path is followed. Secondary transition paths, which occur less frequently, are more dependent upon regional characteristics such as circulations within the tropical upper-tropospheric trough. Physical associations between cluster patterns and tropical cyclone characteristics that were defined in Part I remain intact during transitions between the individual clusters. This is a significant result since the variability of the large-scale circulation within the cluster framework, which is defined by the cluster membership coefficients, can be used to infer sequences of persistent or transitioning circulation patterns. The potential application of the cluster framework for estimation of the stability of large-scale atmospheric circulation patterns and expected durations and transition paths is discussed in relation to the predictability of tropical cyclone characteristics. RP HARR, PA (reprint author), USN,POSTGRAD SCH,DEPT METEOROL,MONTEREY,CA 93943, USA. NR 29 TC 19 Z9 25 U1 0 U2 2 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 MAY PY 1995 VL 123 IS 5 BP 1247 EP 1268 DI 10.1175/1520-0493(1995)123<1247:LSCVOT>2.0.CO;2 PG 22 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA QV855 UT WOS:A1995QV85500002 ER PT J AU KRAUSS, AR AUCIELLO, O SCHULTZ, JA AF KRAUSS, AR AUCIELLO, O SCHULTZ, JA TI TIME-OF-FLIGHT, ION-BEAM SURFACE-ANALYSIS FOR IN-SITU CHARACTERIZATION OF THIN-FILM GROWTH-PROCESSES SO MRS BULLETIN LA English DT Article ID SCATTERING SPECTROSCOPY; COAXIAL IMPACT; ALKALI C1 MICROELECTR CTR N CAROLINA,DIV ELECTR TECHNOL,RES TRIANGLE PK,NC 27709. ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. IBM CORP,ARMONK,NY. UNIV HOUSTON,CTR SPACE VACUUM EPITAXY,HOUSTON,TX 77204. USN,RES LABS,WASHINGTON,DC. ARGONNE NATL LAB,DEPT ENERGY MOUND,ARGONNE,IL 60439. HITACHI LTD,CENT RES LABS,TOKYO,JAPAN. BEER SHEVA NUCL RES CTR,BEER SHEVA,ISRAEL. RP KRAUSS, AR (reprint author), ARGONNE NATL LAB,DIV MAT SCI,9700 S CASS AVE,ARGONNE,IL 60439, USA. NR 33 TC 22 Z9 22 U1 0 U2 0 PU MATERIALS RESEARCH SOCIETY PI PITTSBURGH PA 9800 MC KNIGHT ROAD SUITE 327, PITTSBURGH, PA 15237 SN 0883-7694 J9 MRS BULL JI MRS Bull. PD MAY PY 1995 VL 20 IS 5 BP 18 EP 23 PG 6 WC Materials Science, Multidisciplinary; Physics, Applied SC Materials Science; Physics GA QZ093 UT WOS:A1995QZ09300005 ER PT J AU FREDERICK, JW MILLER, RE AF FREDERICK, JW MILLER, RE TI WEAPONS STRUCTURAL TEST FIRING ABOARD THE USS-ARLEIGH-BURKE SO NAVAL ENGINEERS JOURNAL LA English DT Article; Proceedings Paper CT ASNE Day 1995 CY MAY 17-19, 1995 CL WASHINGTON, DC SP AMER SOC NAVAL ENGINEERS AB During gun or missile firings, Navy ships are subjected to extremely high blast levels: over pressure, noise, temperatures, gas and debris. These weapons firing effects may have serious impacts on ship structure, personnel safety and operational capability The U.S. Navy's Structural Test Firing (STF) program exists to identify, quantify and correct problems associated with weapons blast. Results of the STFs are used to verify the adequacy of ship-building specifications and design, and to ensure that no safety hazards exist due to improper design, construction or installation. The tests also provide data to develop specifications for future ship design. STFs are required on the first ship ill a class to ensure the ship can be operated safely during its own weapons fire. STFs are designed to impose the worst possible gun and missile blast effects to the ship. The USS Arleigh Burke (DDG 51), which represents the Navy's newest class of combatants, completed STF in 1991. The Arleigh Burke was designed with a fully integrated Collective Protection System (CPS) which provides protection from chemical and biological agents. The STF results show that the Arleigh Burke structure, equipment and systems are adequately designed to meet all the STF objectives. RP FREDERICK, JW (reprint author), USN,CTR SURFACE WARFARE,DIV DAHLGREN,STRUCT TEST FIRING GRP,DAHLGREN,VA 22448, USA. NR 0 TC 0 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 MAY PY 1995 VL 107 IS 3 BP 19 EP 34 PG 16 WC Engineering, Marine; Engineering, Civil; Oceanography SC Engineering; Oceanography GA QY169 UT WOS:A1995QY16900004 ER PT J AU BIRD, WR HARADER, WR METZLER, TA MCMILLAN, SB AF BIRD, WR HARADER, WR METZLER, TA MCMILLAN, SB TI SHIPBOARD LOW OBSERVABLE ANTENNA CONCEPTS - MULTIPLE APERATURE PANEL (MAP) - MULTIPLE FUNCTION ANTENNA (MFA) SO NAVAL ENGINEERS JOURNAL LA English DT Article; Proceedings Paper CT ASNE Day 1995 CY MAY 17-19, 1995 CL WASHINGTON, DC SP AMER SOC NAVAL ENGINEERS AB Two new concepts for low radar cross section (RCS) shipboard-mounted antenna systems are presented in this paper. The first concept for integration of low (RCS) antenna apertures into Low Observable (LO) ship super structures has been developed and evaluated in laboratory experiments. The concept consists of using conformal antenna apertures that have low monostatic radar returns and placing them into a sloped deckhouse or mast structure. Critical to the concept is the ability to place multiple apertures close to one another in a small space. A Multiple Aperture Panel (MAP) concept containing antennas for Identification Friend or Foe (IFF), UHF Line of Sight, LAMPS data link, and Navigation Radar functions was developed. Detailed designs for the IFF and UHF antennas were completed and 1/2 scale versions of these antennas were built and tested, Measurements on the 1/2 scale antennas have demonstrated that the proposed antennas will perform well as transmitters/receivers and provide significantly reduced RCS. Conceptual designs and performance estimates for retrofit of the low RCS IFF antenna on a modem combatant and integration of the IFF antenna into a composite deckhouse structure have been completed. An alternate low RCS UHF antenna for the MAP concept, using a horizontally mounted annular slot aperture was designed, built and tested, The second low RCS antenna system concept is for a compact, self-contained, low RCS antenna suite containing radar, GPS, IFF, UHF communication, and UHF SATCOM antennas has been developed, built, and demonstrated in full scale tests. RP BIRD, WR (reprint author), USN,CTR SURFACE WARFARE,CARDEROCK DIV,INFRARED SIGNATURE CONTROL BRANCH,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 MAY PY 1995 VL 107 IS 3 BP 49 EP 60 PG 12 WC Engineering, Marine; Engineering, Civil; Oceanography SC Engineering; Oceanography GA QY169 UT WOS:A1995QY16900007 ER PT J AU MCCARTHEY, FN MAYER, JC DOYLE, DJ AF MCCARTHEY, FN MAYER, JC DOYLE, DJ TI THE PATROL COASTAL CYCLONE CLASS - A DESCRIPTION OF THE NEWEST ADDITION TO THE US-NAVY SO NAVAL ENGINEERS JOURNAL LA English DT Article; Proceedings Paper CT ASNE Day 1995 CY MAY 17-19, 1995 CL WASHINGTON, DC SP AMER SOC NAVAL ENGINEERS AB The U.S. Navy is procuring a new class of ships to serve Coastal Patrol and Interdiction and Naval Special Warfare roles. The new ship, the Patrol Coastal (PC-1 class), was procured using a non-developmental item (NDI) acquisition strategy and is currently under construction at Bollinger Machine Shop and Shipyard, Inc. of Lockport, Louisiana, Thirteen PC's will be delivered to replace the aging 65 ft. MK III Patrol Boats. The 170 ft., 331 ton PC is based upon the Vosper Thornycroft designed and built 52 meter Ramadan class missile attack craft and will provide enhanced endurance, seakeeping and speed relative to the boats they are replacing, The authors describe the design, arrangements and unique features of the Cyclone Class Patrol Coastal ships. Topics that are discussed include the ships general characteristics, general arrangements, hull structure, propulsion system, electrical systems, command and control systems, auxiliary systems, outfit and furnishings and weapon systems. Special features of the Cyclone Class will also be highlighted to include a discussion on the as-delivered configuration as well as future upgrades. The Cyclone Class is a forerunner of the Secretary of Defense's new initiative on the use of commercial specifications and standards. RP MCCARTHEY, FN (reprint author), USN,SEA SYST COMMAND,PC PROGRAM,WASHINGTON,DC 20350, USA. NR 0 TC 0 Z9 0 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 MAY PY 1995 VL 107 IS 3 BP 61 EP 75 PG 15 WC Engineering, Marine; Engineering, Civil; Oceanography SC Engineering; Oceanography GA QY169 UT WOS:A1995QY16900008 ER PT J AU YANKASKAS, K SLOTWINSKI, T AF YANKASKAS, K SLOTWINSKI, T TI ACOUSTIC CHARACTERISTICS OF T-AGOS-19 CLASS SWATH SHIPS SO NAVAL ENGINEERS JOURNAL LA English DT Article; Proceedings Paper CT ASNE Day 1995 CY MAY 17-19, 1995 CL WASHINGTON, DC SP AMER SOC NAVAL ENGINEERS AB Small Waterplane Twin Hull (SWATH) vessels exhibit superior seakeeping capabilities in rough water, which render them more capable than monohull ships for many missions. SWATH vessels are currently in use for a variety of acoustic missions, including oceanographic research and surveillance, which render it necessary to assess and minimize underwater noise generated by the ship. In addition, potential future missions such as anti-submarine warfare require the development of quiet SWATH ships. A wide range of acoustic and vibration data are needed to support the design and construction of SWATH ships with acoustic missions. A number of acoustic tests and trials have been conducted on USNS Victorious (T-AGOS 19) Class ships. During these tests, several innovative acoustic and vibration measurement and analysis techniques were used to identify, investigate and correct a number of acoustic deficiencies. This paper provides an overview of these trials and the acoustic deficiency correction process, Personnel from a variety of organizations worked as a focused team to provide the technical and implementable solutions necessary to improve the acoustic characteristics of the T-AGOS 19 class. Additionally, the results of a diagnostic acoustic trial conducted on the Victorious are prepared and discussed in terms of the unique platform acoustic characteristics found on SWATH ships. RP YANKASKAS, K (reprint author), USN,SEA SYST COMMAND,SHIP SIGNATURES OFF,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 MAY PY 1995 VL 107 IS 3 BP 95 EP 119 PG 25 WC Engineering, Marine; Engineering, Civil; Oceanography SC Engineering; Oceanography GA QY169 UT WOS:A1995QY16900010 ER PT J AU SIKORA, JP AF SIKORA, JP TI DESIGN ALGORITHMS FOR PRIMARY AND SECONDARY LOADS ON SWATH SHIPS SO NAVAL ENGINEERS JOURNAL LA English DT Article; Proceedings Paper CT ASNE Day 1995 CY MAY 17-19, 1995 CL WASHINGTON, DC SP AMER SOC NAVAL ENGINEERS AB The scantlings of SWATH ships must be designed to withstand the primary and secondary loadings imposed by the seaway. These loadings are not as well known for SWATH ships as they are for conventional monohull ships. Previous studies used Froude scaled response characteristics from model tests to predict the maximum lifetime primary loads (transverse bending of the strut and lower hull assemblies). Design algorithms were developed from these studies for ships in the 3,000 to 30,000 ton range. Lacking comparable guidance for smaller ships, these algorithms have frequently been misapplied to smaller vessels. This paper extends the previous method and develops primary load algorithms for ships as small as 50 tons. Also presented herein are algorithms for predicting the slam impact pressures (secondary loads) for SWATHs in the 50 to 30,000 ton size range. Slam pressure measurements from four SWATH ships and two models were Froude scaled to different size ships, pressure area curves were used to convert the pressures to one square meter patch loads, and maximum lifetime values were extrapolated using empirically derived distributions. Next, conservative design algorithms were generated for both pressure magnitudes and distributions. These algorithms are useful for preliminary design studies and are not intended to replace or supplant experimental data for a particular design. RP SIKORA, JP (reprint author), USN,CTR SURFACE WARFARE,CARDEROCK DIV,DEPT SHIP STRUCT & COMPOSITES,DESIGN APPLICAT BRANCH,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 MAY PY 1995 VL 107 IS 3 BP 121 EP 127 PG 7 WC Engineering, Marine; Engineering, Civil; Oceanography SC Engineering; Oceanography GA QY169 UT WOS:A1995QY16900011 ER PT J AU DUVA, AW AF DUVA, AW TI USE OF NAVY EXTERNAL COMBUSTION ENGINE TECHNOLOGY - FOR ULTRA-HIGH ALTITUDE AIRCRAFT PROPULSION SYSTEMS SO NAVAL ENGINEERS JOURNAL LA English DT Article; Proceedings Paper CT ASNE Day 1995 CY MAY 17-19, 1995 CL WASHINGTON, DC SP AMER SOC NAVAL ENGINEERS AB Conceptual design considerations specifically for the application of United States Navy external combustion engine technology in ultra high altitude aircraft including general feasibility study results are presented. The performance data available on existing engines is scaled to identify the system performance of a theoretical application. The results of the studies are used for comparison to ultra high altitude aircraft systems presently in operation. This technology represents an existing low cost alternative to development of high performance turbine or multiple stage turbocharged internal combustion engines for short duration missions at altitudes up to 100,000 feet. RP DUVA, AW (reprint author), USN,DIV UNDERSEA WARFARE CTR,DEPT TORPEDO SYST,NEWPORT,RI 02840, 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 MAY PY 1995 VL 107 IS 3 BP 141 EP 147 PG 7 WC Engineering, Marine; Engineering, Civil; Oceanography SC Engineering; Oceanography GA QY169 UT WOS:A1995QY16900013 ER PT J AU FERREIRO, L AUTRET, G AF FERREIRO, L AUTRET, G TI A COMPARISON OF FRENCH AND US AMPHIBIOUS SHIPS - THE TCD-FOUDRE AND THE LSD-41 SO NAVAL ENGINEERS JOURNAL LA English DT Article; Proceedings Paper CT ASNE Day 1995 CY MAY 17-19, 1995 CL WASHINGTON, DC SP AMER SOC NAVAL ENGINEERS AB Amphibious and littoral operations have become the prime naval focus for many countries, and have elevated the level of interest in the ships acid technologies concerned. This paper explores the effects of differing national approaches to amphibious warfare by comparing the capabilities and systems of two amphibious ships, the French TCD (equivalent to LSD in English) Foudre and the U.S, LSD 41 Whidbey Island class. Both classes of ships have broadly similar roles and capabilities, but differing operational doctrines, military requirements and design standards have led to quite different approaches in ship design. The French Navy is similar in function and composition to the U.S. Navy, but about one-fifth the size. French amphibious assault is carried out by an Army division, while the U.S. assault force is a branch of the Navy, the Marines. The French amphibious fleet is sized to carry a proportionally smaller landing force than that of the U.S but the Foudre would be the centerpiece of the French assault group, while the LSD 41 would normally operate with big-deck ships like LHDs and LHAs. Current French assault doctrine calls for conventional landing craft, while the U.S, uses air cushion vehicles. Finally, the ground assault forces differ in size and composition. These operational differences, as well as other technical ones, have led to outwardly similar but in fact rather different ships. This paper describes the technical differences between the ships in the context of differing operational requirements, and illustrates how these larger factors greatly influence the outcome of the design process. C1 USN,CTR SURFACE WARFARE,CANDEROCK DIV,WASHINGTON,DC. 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 MAY PY 1995 VL 107 IS 3 BP 167 EP 184 PG 18 WC Engineering, Marine; Engineering, Civil; Oceanography SC Engineering; Oceanography GA QY169 UT WOS:A1995QY16900015 ER PT J AU EWING, DL HOLMES, RW ROCHON, BG DALEY, JB HELLMAN, TT AF EWING, DL HOLMES, RW ROCHON, BG DALEY, JB HELLMAN, TT TI A SURFACE COMBATANT FOR THE 21ST-CENTURY - DDG-51 FLIGHT-IIA SO NAVAL ENGINEERS JOURNAL LA English DT Article; Proceedings Paper CT ASNE Day 1995 CY MAY 17-19, 1995 CL WASHINGTON, DC SP AMER SOC NAVAL ENGINEERS AB In a major upgrade to the DDG 51 Class, the ship design is being modified to reflect the Navy's increased emphasis on littoral operations while retaining significant open ocean capabilities. This upgrade is known as the Flight IIA and the Navy recently awarded the construction contract for the first of these ships, DDG 79. This paper reviews the origins of the Flight IIA design and provides an overview of the major design changes. In addition, a detailed discussion of unique management aspects of the Flight IIA design is presented. The initial plan is compared to what is actually taking place with explanations of all changes in approach. Finally, the emphasis on affordability in all phases of the Flight IIA design is discussed and examples are given of the many efforts to reduce the cost of the Flight IIA ships. RP EWING, DL (reprint author), USN,SEA SYST COMMAND,SHIP DESIGN & SYST ENGN GRP,WASHINGTON,DC 20350, USA. NR 0 TC 0 Z9 0 U1 1 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 MAY PY 1995 VL 107 IS 3 BP 217 EP 232 PG 16 WC Engineering, Marine; Engineering, Civil; Oceanography SC Engineering; Oceanography GA QY169 UT WOS:A1995QY16900018 ER PT J AU PESILE, C HESS, L TUTTLE, J AF PESILE, C HESS, L TUTTLE, J TI BREAKING THE ICE OF ACQUISITION REFORM SO NAVAL ENGINEERS JOURNAL LA English DT Article; Proceedings Paper CT ASNE Day 1995 CY MAY 17-19, 1995 CL WASHINGTON, DC SP AMER SOC NAVAL ENGINEERS AB In the spring of 1992 the Naval Sea Systems Command was forced to cancel the solicitation for the Coast Guard Polar Icebreaker replacement due to affordability issues. Yet less than a year later a contract was awarded for detailed design and construction of a Polar Icebreaker. To accomplish this, a team was organized in April of 1992 to rethink the technical and programmatic approach for acquisition. A number of the approaches used have been included in the new Department of Defense (DoD) acquisition policy statement of June 1994. Because of the innovative nature of the approach, the Program Office conducted a lessons learned review by revisiting program documentation and interviewing the major players. This paper examines the process through which changes were made and the rationale for them. It finishes with a summary of some of the more important lessons learned by the project team both during the redevelopment of the solicitation and the first phase of the contract. C1 USN ACAD,ANNAPOLIS,MD 21402. 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 MAY PY 1995 VL 107 IS 3 BP 303 EP 311 PG 9 WC Engineering, Marine; Engineering, Civil; Oceanography SC Engineering; Oceanography GA QY169 UT WOS:A1995QY16900024 ER PT J AU SZU, H TAKEFUJI, Y FOO, SY AF SZU, H TAKEFUJI, Y FOO, SY TI PRESENTING THE SPECIAL ISSUE ON OPTIMIZATION AND COMBINATORICS SO NEUROCOMPUTING LA English DT Editorial Material C1 FLORIDA STATE UNIV,COLL ENGN,FAMU,DEPT ELECT ENGN,TALLAHASSEE,FL 32316. CASE WESTERN RESERVE UNIV,DEPT ELECT ENGN & APPL PHYS,CLEVELAND,OH 44106. KEIO UNIV,FAC ENVIRONM INFORMAT,FUJISAWA,KANAGAWA 252,JAPAN. RP SZU, H (reprint author), USN,CTR SURFACE WARFARE,R44,SILVER SPRING,MD 20903, USA. NR 11 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0925-2312 J9 NEUROCOMPUTING JI Neurocomputing PD MAY PY 1995 VL 8 IS 1 BP 3 EP 4 DI 10.1016/0925-2312(95)00006-2 PG 2 WC Computer Science, Artificial Intelligence SC Computer Science GA RA669 UT WOS:A1995RA66900001 ER PT J AU FOO, SY TAKEFUJI, Y SZU, H AF FOO, SY TAKEFUJI, Y SZU, H TI SCALING PROPERTIES OF NEURAL NETWORKS FOR JOB-SHOP SCHEDULING SO NEUROCOMPUTING LA English DT Article DE OPTIMIZATION; SCHEDULING; MIXED INTEGER LINEAR PROGRAMMING; TANK-HOPFIELD NEURAL NETWORKS AB This paper investigates the scaling properties of neural networks for solving job-shop scheduling problems. Specifically, the Tank-Hopfield linear programming network is modified to solve mixed integer linear programming with the addition of step-function amplifiers. Using a linear energy function, our approach avoids the traditional problems associated with most Hopfield networks using quadratic energy functions. Although our approach requires more hardware (in terms of processing elements and resistive interconnects) than a recent approach by Zhou et al. [2], the neurons in the modified Tank-Hopfieid network do not perform extensive calculations unlike those described by Zhou et al. C1 CASE WESTERN RESERVE UNIV,DEPT ELECT ENGN & APPL PHYS,CLEVELAND,OH 44106. FLORIDA STATE UNIV,COLL ENGN,FAMU,DEPT ELECT ENGN,TALLAHASSEE,FL 32316. RP FOO, SY (reprint author), USN,CTR SURFACE WARFARE,INFORMAT SCI GRP,SILVER SPRING,MD 20903, USA. NR 6 TC 17 Z9 19 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0925-2312 J9 NEUROCOMPUTING JI Neurocomputing PD MAY PY 1995 VL 8 IS 1 BP 79 EP 91 DI 10.1016/0925-2312(94)00011-5 PG 13 WC Computer Science, Artificial Intelligence SC Computer Science GA RA669 UT WOS:A1995RA66900006 ER PT J AU CHAMBERS, GP HUBLER, GK AF CHAMBERS, GP HUBLER, GK TI A PARTICLE TELESCOPE SYSTEM FOR NUCLEAR-REACTION IDENTIFICATION SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT 13th International Conference on the Application of Accelerators in Research and Industry CY NOV 07-10, 1994 CL DENTON, TX SP US DOE, Natl Sci Fdn, Univ N Texas AB A particle telescope system is described, consisting of a thin (28 mu m) dE/dx and a thick (300 mu m) E silicon detector operating in coincidence mode, with relatively high solid angle of acceptance and very low background characteristics. This apparatus is capable of determining both the energy and identity of incident charged particle species and therefore of identifying nuclear processes. Additional advantages of this system are that it is capable of operating in corrosive environments and of reducing the charged particle background to as low as one count per week. The system calibration was carried out for MeV energy protons, He-4 and beta particles. Nuclear reactions were produced through high energy (190 keV) deuterium ion implantation of metallic foils and thin films. The particle telescope system was employed to measure the energy and determine the species of charged particles produced by nuclear reactions occurring within the films and foils. RP CHAMBERS, GP (reprint author), USN,RES LAB,CODE 6671,WASHINGTON,DC 20375, USA. NR 6 TC 0 Z9 0 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD MAY PY 1995 VL 99 IS 1-4 BP 669 EP 673 DI 10.1016/0168-583X(94)00670-9 PG 5 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA RK760 UT WOS:A1995RK76000176 ER PT J AU PHILLIPS, GW AF PHILLIPS, GW TI GAMMA-RAY IMAGING WITH COMPTON CAMERAS SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT 13th International Conference on the Application of Accelerators in Research and Industry CY NOV 07-10, 1994 CL DENTON, TX SP US DOE, Natl Sci Fdn, Univ N Texas ID EMISSION COMPUTED-TOMOGRAPHY; TELESCOPE; RECONSTRUCTION AB Compton cameras use the kinematics of Compton scattering to construct a source image without the use of collimators or masks. Compton telescopes were first built in the 1970s for astronomical observations. The first laboratory instrument was designed for medical imaging. Recently, three dimensional imaging has been demonstrated using an array of high resolution germanium detectors for characterization of mixed radioactive waste containers. Image resolution depends on the detector accuracy in both energy and position and on the image reconstruction algorithm. Advantages of Compton imaging include a wide field of view, background suppression, the ability to image high energy gamma rays (up to 10 MeV) and the ability to obtain three dimensional images from a fixed position on one side of the source without the need for tomography. The operation of Compton cameras will be reviewed along with recent results and future prospects. RP PHILLIPS, GW (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 23 TC 35 Z9 35 U1 0 U2 5 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD MAY PY 1995 VL 99 IS 1-4 BP 674 EP 677 DI 10.1016/0168-583X(95)80085-9 PG 4 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA RK760 UT WOS:A1995RK76000177 ER PT J AU ADLER, H MEYER, ES SERPA, FG TAKACS, E GILLASPY, JD BROWN, CM FELDMAN, U AF ADLER, H MEYER, ES SERPA, FG TAKACS, E GILLASPY, JD BROWN, CM FELDMAN, U TI FABRY-PEROT SPECTROSCOPY OF A VISIBLE MAGNETIC DIPOLE TRANSITION IN BA34+ SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT 7th International Conference on the Physics of Highly Charged Ions (HCI-94) CY SEP 19-23, 1994 CL VIENNA, AUSTRIA AB We are using Fabry-Perot interferometry to study visible lines from highly-charged ions created and trapped within an electron beam ion trap (EBIT). The 3d(4) D-5(2)-D-5(3) titanium-like barium (Ba34+) line at 3932(2) Angstrom was recently measured in Ref. [1] (C.A. Morgan et al., Phys. Rev. Lett. 74 (1995) 1716) using a grating monochromator. We present preliminary Fabry-Perot spectra of this line with significantly improved resolution. The Doppler-broadened 1 Angstrom line width is consistent with an expected ion temperature of less than 1 keV. We discuss the possibility of resolving Zeeman splittings, and of using these visible lines as a diagnostic in high temperature, low density plasmas, like those that exist in tokamaks and the EBIT itself. C1 NATL INST STAND & TECHNOL,DIV ATOM PHYS,GAITHERSBURG,MD 20899. PRINCETON PLASMA PHYS LAB,PRINCETON,NJ 08543. USN,RES LAB,EO HULBURT CTR SPACE RES,WASHINGTON,DC 20375. NR 8 TC 14 Z9 14 U1 1 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD MAY PY 1995 VL 98 IS 1-4 BP 581 EP 584 DI 10.1016/0168-583X(95)00016-X PG 4 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA RD637 UT WOS:A1995RD63700136 ER PT J AU TONNERRE, JM SEVE, L RAOUX, D RODMACQ, B DESANTIS, M TROUSSEL, P BROT, JM CHAKARIAN, V KAO, CC JOHNSON, ED CHEN, CT AF TONNERRE, JM SEVE, L RAOUX, D RODMACQ, B DESANTIS, M TROUSSEL, P BROT, JM CHAKARIAN, V KAO, CC JOHNSON, ED CHEN, CT TI X-RAY RESONANT MAGNETIC SCATTERING AT L-EDGES OF 3D TRANSITION-METALS IN MULTILAYERS SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT 1st European Conference on Synchrotron Radiation in Materials Science CY JUL 03-08, 1994 CL CHESTER, ENGLAND SP CEA Aktiebolag, Stringnis, Sweden, Daresbury Rutherford Appleton Lab, Daresbury, UK, EG&G Ortec, Oakridge, USA, Elsevier Sci BV, Amsterdam, the Netherlands, Engn & Phys Sci Res Council, Swindon, UK European Union, Brussels, Belgium, ICI Chem & Polym, Runcorn, UK, Pilkington Technol Management Ltd, Ormskirk, UK, Princeton Instruments, Trenton, USA, Siemens, Karlsruhe, Germany, Spectrolab Res Labs Ltd, Newbury, UK, Unilever Res, Wirral, UK, VCH Publ, Cambridge, UK ID AG/NI SUPERLATTICES; CIRCULAR-DICHROISM; EXCHANGE SCATTERING; MONOCHROMATORS; DIFFRACTION; NICKEL AB X-ray resonant magnetic scattering experiments using linear and circular polarised light have been caried out at the Ni and Fe L(2,3) absorption edges on magnetically coupled Ag/Ni and Ag/NiFe multilayers. The strong enhancement of the X-ray magnetic resonant scattering, especially at the Fe L edges, allows to evidence a superlattice magnetic peak due to the antiferromagnetic coupling between Ni or NiFe layers. Magnetic reflections represent several % of the intensity of the charge peak. With the magnetic moments aligned between layers, large changes (up to 75%) in the intensity of the chemical modulation peak have been observed upon reversal of the direction of the magnetic field. For the Ag/Ni, multilayer a detailed analysis gives a magnetic scattering amplitude equal to 8 r(o) per nickel atom. C1 CEA,DEPT RECH FONDAMENTALE MATIERE CONDENSEE,SP2M,MP,F-38054 GRENOBLE 9,FRANCE. LAB UTILISAT RAYONNEMENT ELECTROMAGNET,MESR,CEA,CNRS,F-91405 ORSAY,FRANCE. CEA,CTR ETUD LIMEIL VALENTON,F-94195 VILLENEUVE ST GEO,FRANCE. BROOKHAVEN NATL LAB,NSLS,UPTON,NY 11973. BROOKHAVEN NATL LAB,NAVAL RES LAB,UPTON,NY 11973. AT&T BELL LABS,MURRAY HILL,NJ 07974. RP TONNERRE, JM (reprint author), CNRS,CRISTALLOG LAB,25 AV MARTYRS,BP 166,F-38042 GRENOBLE 9,FRANCE. NR 21 TC 17 Z9 17 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD MAY PY 1995 VL 97 IS 1-4 BP 444 EP 448 DI 10.1016/0168-583X(94)00721-7 PG 5 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA RF158 UT WOS:A1995RF15800097 ER PT J AU ELSON, JM AF ELSON, JM TI THEORETICAL COMPARISON OF LIGHT-SCATTERING AND GUIDED-WAVE COUPLING IN MULTILAYER COATED OPTICAL-COMPONENTS WITH RANDOM INTERFACE ROUGHNESS SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT Symposium in Honor of R H Ritchie on His 70th Birthday - The Interaction of Swift Particles and Electromagnetic Fields with Matter CY OCT 23-25, 1994 CL OAK RIDGE, TN SP Oak Ridge Nat Lab, US DOE, Univ Tennessee Knoxville, Sci Alliance ID GRATINGS; SURFACES AB In this work, we use first-order perturbation theory to calculate and then compare the (1) angular distribution of incident light scattered from a multilayer-coated optical component and (2) the angular distribution of incident light coupled into guided waves supported by the multilayer component. The incident beam is assumed to be a monochromatic plane wave and the scattering/coupling is assumed to be caused by roughness at the interfaces of the optical component. Numerical results show that for high quality (low root mean square roughness) optical components, comparison of the relative amounts of incident energy (1) scattered out of the specular beam and (2) coupled into guided waves are comparable. It follows that the guided wave energy will further contribute to the scattered field via radiative decay or be converted to heat. Thus, this work can help provide an estimation of when guided wave coupling can occur along with the expected magnitude. RP ELSON, JM (reprint author), USN,CTR AIR WARFARE,DIV WEAPONS,DIV RES & TECHNOL,CHINA LAKE,CA 93555, USA. NR 15 TC 2 Z9 2 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD MAY PY 1995 VL 96 IS 3-4 BP 486 EP 493 DI 10.1016/0168-583X(95)00247-2 PG 8 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA RE039 UT WOS:A1995RE03900010 ER PT J AU MORAN, MJ HAIGH, RE LOWRY, ME SWEIDER, DR ABEL, GR CARLSON, JT LEWIA, SD ATCHLEY, AA GAITAN, DF MARUYAMA, XK AF MORAN, MJ HAIGH, RE LOWRY, ME SWEIDER, DR ABEL, GR CARLSON, JT LEWIA, SD ATCHLEY, AA GAITAN, DF MARUYAMA, XK TI DIRECT OBSERVATIONS OF SINGLE SONOLUMINESCENCE PULSES SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT Symposium in Honor of R H Ritchie on His 70th Birthday - The Interaction of Swift Particles and Electromagnetic Fields with Matter CY OCT 23-25, 1994 CL OAK RIDGE, TN SP Oak Ridge Nat Lab, US DOE, Univ Tennessee Knoxville, Sci Alliance ID GAS BUBBLE AB Previous reports have described experimental measurements and theoretical descriptions of sonoluminescence without clearly resolving the physical events that underlie this phenomenon. Although incomplete, these results have led to suggestions that sonoluminescence might be such an extreme process that it could serve as an unusual inertial confinement source of fusion neutrons. Such a possibility depends on physical details of individual sonoluminescence events such as the source temperature, diameter, and density. The present report describes attempts to measure the diameter and duration of single sonoluminescence flashes. In both cases the results were limited by the resolution of the instruments, giving diameters of the order of 3 mu m or less and durations of the order of 12 ps, or less. C1 USN,POSTGRAD SCH,DEPT PHYS,MONTEREY,CA 93943. RP MORAN, MJ (reprint author), LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550, USA. RI GAITAN, DARIO/N-2727-2016 OI GAITAN, DARIO/0000-0002-2139-8535 NR 10 TC 28 Z9 28 U1 1 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD MAY PY 1995 VL 96 IS 3-4 BP 651 EP 656 DI 10.1016/0168-583X(95)00241-3 PG 6 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA RE039 UT WOS:A1995RE03900033 ER PT J AU DUTTA, P JOSHI, Y JANASWAMY, R AF DUTTA, P JOSHI, Y JANASWAMY, R TI THERMAL MODELING OF GAS TUNGSTEN ARC-WELDING PROCESS WITH NONAXISYMMETRIC BOUNDARY-CONDITIONS SO NUMERICAL HEAT TRANSFER PART A-APPLICATIONS LA English DT Article ID FLUID-FLOW; PURE METAL; POOL; CONVECTION AB A numerical study of three-dimensional heat transfer and fluid flow in a moving gas tungsten are welding (GTAW) process is performed by considering nonaxisymmetric boundary conditions. The current density distribution and the resulting Lorentz force field are evaluated by numerically solving Maxwell's equations in the domain of the workpiece. The numerical modeling of the melting/solidification process is done by appropriately applying the enthalpy-porosity approach to the GTAW process. Numerical computations of the heat transfer and flow characteristics are carried out by including the effects of buoyancy, surface tension, and electromagnetic forces. The weld-pool dynamics is found to be strongly dependent on the relative locations of the clamp and electrode. C1 UNIV MARYLAND,DEPT MECH ENGN,COLLEGE PK,MD 20742. COLUMBIA UNIV,DEPT MECH ENGN,NEW YORK,NY 10027. USN,POSTGRAD SCH,DEPT ELECT & COMP ENGN,MONTEREY,CA 93943. NR 18 TC 47 Z9 47 U1 0 U2 0 PU HEMISPHERE PUBL CORP PI BRISTOL PA 1900 FROST ROAD, SUITE 101, BRISTOL, PA 19007-1598 SN 1040-7782 J9 NUMER HEAT TR A-APPL JI Numer. Heat Tranf. A-Appl. PD MAY PY 1995 VL 27 IS 5 BP 499 EP 518 DI 10.1080/10407789508913715 PG 20 WC Thermodynamics; Mechanics SC Thermodynamics; Mechanics GA QY823 UT WOS:A1995QY82300001 ER PT J AU BORGES, CF FREZZA, R GRAGG, WB AF BORGES, CF FREZZA, R GRAGG, WB TI SOME INVERSE EIGENPROBLEMS FOR JACOBI AND ARROW MATRICES SO NUMERICAL LINEAR ALGEBRA WITH APPLICATIONS LA English DT Article DE JACOBI MATRIX; ARROW MATRIX; INVERSE PROBLEM AB We consider the problem of reconstructing Jacobi matrices and real symmetric arrow matrices from two eigenpairs. Algorithms for solving these inverse problems are presented. We show that there are reasonable conditions under which this reconstruction is always possible. Moreover, it is seen that in certain cases reconstruction can proceed with little or no cancellation. The algorithm is particularly elegant for the tridiagonal matrix associated with a bidiagonal singular value decomposition. C1 UNIV PADUA,DEI,I-35131 PADUA,ITALY. RP BORGES, CF (reprint author), USN,POSTGRAD SCH,CODE MA-BC,MONTEREY,CA 93943, USA. RI Borges, Carlos/E-3157-2010 NR 13 TC 7 Z9 8 U1 0 U2 1 PU JOHN WILEY & SONS LTD PI W SUSSEX PA BAFFINS LANE CHICHESTER, W SUSSEX, ENGLAND PO19 1UD SN 1070-5325 J9 NUMER LINEAR ALGEBR JI Numer. Linear Algebr. Appl. PD MAY-JUN PY 1995 VL 2 IS 3 BP 195 EP 203 DI 10.1002/nla.1680020302 PG 9 WC Mathematics, Applied; Mathematics SC Mathematics GA RC341 UT WOS:A1995RC34100001 ER PT J AU HUSTON, AL JUSTUS, BL AF HUSTON, AL JUSTUS, BL TI PHOTOREVERSIBLE BIREFRINGENCE IN DOPED VYCOR GLASS SO OPTICS LETTERS LA English DT Article ID OPTICAL FIBERS; PHOTOINDUCED BIREFRINGENCE; POLARIZATION HOLOGRAPHY; BRAGG GRATINGS; INDEX CHANGES; PHOTOSENSITIVITY AB Photoreversible birefringence is demonstrated in Vycor glass, doped with nanocrystalline ZnS and Cu, by linearly polarized 266-nm pulsed excitation. The birefringence is readily reversed by exposure to orthogonally polarized UV radiation. Photoinduced birefringence is stable at room temperature and can be removed by annealing at temperatures above 250 degrees C. RP HUSTON, AL (reprint author), USN,RES LAB,DIV OPT SCI,WASHINGTON,DC 20375, USA. NR 16 TC 4 Z9 4 U1 0 U2 0 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0146-9592 J9 OPT LETT JI Opt. Lett. PD MAY 1 PY 1995 VL 20 IS 9 BP 952 EP 954 DI 10.1364/OL.20.000952 PG 3 WC Optics SC Optics GA QV829 UT WOS:A1995QV82900002 PM 19859387 ER PT J AU YANG, LM SOSNOWSKI, T STOCK, ML NORRIS, TB SQUIER, J MOURON, G DENNIS, ML DURLING, IN AF YANG, LM SOSNOWSKI, T STOCK, ML NORRIS, TB SQUIER, J MOURON, G DENNIS, ML DURLING, IN TI CHIRPED-PULSE AMPLIFICATION OF ULTRASHORT PULSES WITH A MULTIMODE TM-ZBLAN FIBER UP-CONVERSION AMPLIFIER SO OPTICS LETTERS LA English DT Article ID FLUOROZIRCONATE AB Microjoule pulse energies are achieved from a single-stage upconversion fiber amplifier for the first time, to our knowledge, in this demonstration of chirped-pulse amplification with a multimode Tm:ZBLAN fiber. A Ti:sapphire laser system provides the seed pulse for the fiber upconversion amplifier that produces picosecond pulse trains with energies as great as 16 mu J at a repetition rate of 4.4 kHz. C1 USN,RES LAB,WASHINGTON,DC 20375. RP YANG, LM (reprint author), UNIV MICHIGAN,CTR ULTRAFAST OPT SCI,2200 BONISTEEL BLVD,1006 IST,ANN ARBOR,MI 48109, USA. NR 19 TC 5 Z9 5 U1 1 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 MAY 1 PY 1995 VL 20 IS 9 BP 1044 EP 1046 DI 10.1364/OL.20.001044 PG 3 WC Optics SC Optics GA QV829 UT WOS:A1995QV82900033 PM 19859418 ER PT J AU GIBSON, WK DUGDALE, TW AF GIBSON, WK DUGDALE, TW TI A TRIGONOMETRIC ANALYSIS OF DISTAL PATELLOFEMORAL REALIGNMENT SO ORTHOPEDICS LA English DT Article AB Patellofemoral malalignment is often treated successfully with realignment procedures, Although distal patellar realignment has been used widely with excellent results, there is no published equation to predict degrees of change in the Q angle with millimeters of medialization, The purpose of this study was to quantify this relationship, In 20 fresh cadaver knees, threaded Kirschner (K) wires were placed in the anterior superior iliac spine, center of patella, and tibial tubercle, Q angles and measurements from the center of the patella to tibial tubercle were obtained, After using Fulkerson's technique of antero-medialization, Q angles were measured with 5 mm and 10 mm of medialization in a plane parallel to the floor and perpendicular to the threaded K-wires, The triangle formed by the center of the patella, tibial tubercle (initial), and tibial tubercle (medialized) was in one plane and could be studied by trigonometric analysis, A formula derived from the Law of Cosines to predict the change in the Q angle with medialization was found to be highly accurate, The authors present an equation that can be used to ensure adequate correction of the Q angle in distal patellar realignment. RP GIBSON, WK (reprint author), USN HOSP,DEPT ORTHOPED,PORTSMOUTH,VA 23708, USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU SLACK INC PI THOROFARE PA 6900 GROVE RD, THOROFARE, NJ 08086 SN 0147-7447 J9 ORTHOPEDICS JI Orthopedics PD MAY PY 1995 VL 18 IS 5 BP 457 EP 460 PG 4 WC Orthopedics SC Orthopedics GA QY448 UT WOS:A1995QY44800004 PM 7610093 ER PT J AU BROTO, JM RAKOTO, H OUSSET, JC COFFE, G ASKENAZY, S OSOFSKY, MS SOULEN, RJ WOLF, SA PARI, P BOZOVIC, I ECKSTEIN, JN VIRSHUP, GF AF BROTO, JM RAKOTO, H OUSSET, JC COFFE, G ASKENAZY, S OSOFSKY, MS SOULEN, RJ WOLF, SA PARI, P BOZOVIC, I ECKSTEIN, JN VIRSHUP, GF TI ANOMALOUS TEMPERATURE-DEPENDENCE OF H-C2 IN BISRCUO SO PHYSICA B LA English DT Article; Proceedings Paper CT 4th International Symposium on Research in High Magnetic Fields CY AUG 29-31, 1994 CL NIJMEGEN, NETHERLANDS SP Koninklijke Nederlandse Akad Wetenschappen, Amsterdam, Stichting Physica, Bilthoven, Stichting Fundamenteel Onderzoek Materie, Utrecht, Elsevier Sci B V, Amsterdam, HOLEC Projects B V, Hengelo, Philips Res, Eindhoven, AB Millimetre, Paris, Vacutech B V, Rijswijk, Cryogenic Ltd, London, Gemeente Nijmegen, Katholieke Univ Nijmegen, Univ Amsterdam ID UPPER CRITICAL-FIELD; SUPERLATTICES; CRYSTALS AB H-c2(T) has been measured for thin BSCO films at temperatures down to 65 mK and pulsed fields up to 35 T. H-c2(T) diverged anomalously as the temperature decreased: at the lowest temperature, it was five times that expected for a conventional superconductor. Although deviations from the conventional behavior have been observed in other superconductors, such strong divergence over such a large range of reduced temperature has not been seen before. C1 USN,RES LAB,WASHINGTON,DC 20375. CENS,BASSES TEMP LAB,SERV PHYS ETAT CONDENSE,F-91191 GIF SUR YVETTE,FRANCE. VARIAN ASSOCIATES INC,EDWARD L GINZTON RES CTR,PALO ALTO,CA 94304. RP BROTO, JM (reprint author), SERV NATL CHAMPS MAGNET PULSES,F-31077 TOULOUSE,FRANCE. RI Wolf, Stuart/A-7513-2009; Osofsky, Michael/A-1050-2010 NR 11 TC 3 Z9 3 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 J9 PHYSICA B JI Physica B PD MAY PY 1995 VL 211 IS 1-4 BP 254 EP 256 DI 10.1016/0921-4526(94)01000-Q PG 3 WC Physics, Condensed Matter SC Physics GA RD544 UT WOS:A1995RD54400065 ER PT J AU FLOM, SR BARTOLI, FJ SARKAS, HW MERRITT, CD KAFAFI, ZH AF FLOM, SR BARTOLI, FJ SARKAS, HW MERRITT, CD KAFAFI, ZH TI RESONANT NONLINEAR-OPTICAL PROPERTIES AND EXCITED-STATE DYNAMICS OF PRISTINE, OXYGEN-DOPED, AND PHOTOPOLYMERIZED C-60 IN THE SOLID-STATE SO PHYSICAL REVIEW B LA English DT Article ID THIN-FILMS; FULLERENES; C-70 C1 USN,RES LAB,WASHINGTON,DC 20375. NR 35 TC 42 Z9 42 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 1 PY 1995 VL 51 IS 17 BP 11376 EP 11381 DI 10.1103/PhysRevB.51.11376 PG 6 WC Physics, Condensed Matter SC Physics GA QY781 UT WOS:A1995QY78100017 ER PT J AU LIEBENBERG, DH SOULEN, RJ FRANCAVILLA, TL FULLERMORA, WW MCINTYRE, PC CIMA, MJ AF LIEBENBERG, DH SOULEN, RJ FRANCAVILLA, TL FULLERMORA, WW MCINTYRE, PC CIMA, MJ TI CURRENT-VOLTAGE MEASUREMENTS OF THIN YBA2CU3O6.9 FILMS COMPARED WITH A MODIFIED AMBEGAOKAR-HALPERIN THEORY SO PHYSICAL REVIEW B LA English DT Article ID HIGH-TC SUPERCONDUCTORS; COLLECTIVE FLUX CREEP; METALORGANIC DEPOSITION C1 USN,RES LAB,WASHINGTON,DC 20395. MIT,CAMBRIDGE,MA 02139. RP LIEBENBERG, DH (reprint author), OFF NAVAL RES,800 N QUINCY ST,ARLINGTON,VA 22217, USA. NR 26 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 1 PY 1995 VL 51 IS 17 BP 11838 EP 11847 DI 10.1103/PhysRevB.51.11838 PG 10 WC Physics, Condensed Matter SC Physics GA QY781 UT WOS:A1995QY78100077 ER PT J AU DEENEY, C LEPELL, PD FAILOR, BH WONG, SL APRUZESE, JP WHITNEY, KG THORNHILL, JW DAVIS, J YADLOWSKY, E HAZELTON, RC MOSCHELLA, JJ NASH, T LOTER, N AF DEENEY, C LEPELL, PD FAILOR, BH WONG, SL APRUZESE, JP WHITNEY, KG THORNHILL, JW DAVIS, J YADLOWSKY, E HAZELTON, RC MOSCHELLA, JJ NASH, T LOTER, N TI INCREASED KILO-ELECTRON-VOLT X-RAY YIELDS FROM Z-PINCH PLASMAS BY MIXING ELEMENTS OF SIMILAR ATOMIC NUMBERS SO PHYSICAL REVIEW E LA English DT Article ID WIRE-ARRAY IMPLOSIONS; EMISSION C1 PHYS INT CO,SAN LEANDRO,CA 94577. USN,RES LAB,WASHINGTON,DC 20375. HYTECH RES CORP,RADFORD,VA 24141. MAXWELL LABS INC,SAN DIEGO,CA 92123. RP DEENEY, C (reprint author), SANDIA NATL LABS,MS-1194,1515 EUBANK AVE,ALBUQUERQUE,NM 87185, USA. NR 17 TC 60 Z9 60 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 MAY PY 1995 VL 51 IS 5 BP 4823 EP 4832 DI 10.1103/PhysRevE.51.4823 PN B PG 10 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA QZ155 UT WOS:A1995QZ15500033 ER PT J AU CARR, TW SCHWARTZ, LB AF CARR, TW SCHWARTZ, LB TI CONTROLLING THE UNSTABLE STEADY-STATE IN A MULTIMODE LASER SO PHYSICAL REVIEW E LA English DT Note ID SYSTEM; CHAOS RP CARR, TW (reprint author), USN,RES LAB,DIV PLASMA PHYS,SPECIAL PROJECT NONLINEAR SCI,CODE 67003,WASHINGTON,DC 20375, USA. NR 9 TC 27 Z9 27 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 MAY PY 1995 VL 51 IS 5 BP 5109 EP 5111 DI 10.1103/PhysRevE.51.5109 PN B PG 3 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA QZ155 UT WOS:A1995QZ15500064 ER PT J AU ESAREY, E PILLOFF, M AF ESAREY, E PILLOFF, M TI TRAPPING AND ACCELERATION IN NONLINEAR PLASMA-WAVES SO PHYSICS OF PLASMAS LA English DT Article ID WAKE-FIELD ACCELERATOR; INTENSE LASER-PULSES; ELECTROMAGNETIC-RADIATION; PARTICLE-ACCELERATION; GENERATION; ELECTRONS; EXCITATION C1 CORNELL UNIV, DEPT PHYS, ITHACA, NY 14853 USA. RP USN, RES LAB, DIV PLASMA PHYS, BEAM PHYS BRANCH, WASHINGTON, DC 20375 USA. NR 39 TC 134 Z9 137 U1 3 U2 30 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 MAY PY 1995 VL 2 IS 5 BP 1432 EP 1436 DI 10.1063/1.871358 PG 5 WC Physics, Fluids & Plasmas SC Physics GA QZ330 UT WOS:A1995QZ33000011 ER PT J AU FREUND, HP READ, ME JACKSON, RH PERSHING, DE TACCETTI, JM AF FREUND, HP READ, ME JACKSON, RH PERSHING, DE TACCETTI, JM TI A FREE-ELECTRON LASER FOR CYCLOTRON RESONANT HEATING IN MAGNETIC FUSION-REACTORS SO PHYSICS OF PLASMAS LA English DT Article C1 USN,RES LAB,WASHINGTON,DC 20375. SCI APPLICAT INT CORP,MCLEAN,VA 22102. MISSION RES CORP,NEWINGTON,VA 22122. UNIV MARYLAND,COLLEGE PK,MD 20742. RP FREUND, HP (reprint author), PHYS SCI INC,ALEXANDRIA,VA 22314, USA. NR 9 TC 12 Z9 12 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 MAY PY 1995 VL 2 IS 5 BP 1755 EP 1759 DI 10.1063/1.871323 PG 5 WC Physics, Fluids & Plasmas SC Physics GA QZ330 UT WOS:A1995QZ33000044 ER PT J AU FLIFLET, AW GOLD, SH AF FLIFLET, AW GOLD, SH TI THEORY OF COMPETITION BETWEEN SYNCHRONOUS AND NONSYNCHRONOUS MODES IN A MAGNICON OUTPUT CAVITY SO PHYSICS OF PLASMAS LA English DT Article ID GYROTRON OSCILLATORS; MULTIMODE SIMULATION; AMPLIFIER RP FLIFLET, AW (reprint author), USN,RES LAB,DIV PLASMA PHYS,BEAM PHYS BRANCH,WASHINGTON,DC 20375, USA. NR 17 TC 6 Z9 6 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 1070-664X J9 PHYS PLASMAS JI Phys. Plasmas PD MAY PY 1995 VL 2 IS 5 BP 1760 EP 1765 DI 10.1063/1.871324 PG 6 WC Physics, Fluids & Plasmas SC Physics GA QZ330 UT WOS:A1995QZ33000045 ER PT J AU DAVIS, J GIULIANI, JL MULBRANDON, M AF DAVIS, J GIULIANI, JL MULBRANDON, M TI INFLUENCE OF L-SHELL DYNAMICS ON K-SHELL YIELDS FOR IMPLODING KRYPTON Z-PINCH PLASMAS SO PHYSICS OF PLASMAS LA English DT Article ID IMPLOSIONS; RADIATION RP DAVIS, J (reprint author), USN,RES LAB,DIV PLASMA PHYS,RADIAT HYDRODYNAM BRANCH,WASHINGTON,DC 20375, USA. NR 17 TC 21 Z9 22 U1 0 U2 2 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 MAY PY 1995 VL 2 IS 5 BP 1766 EP 1774 DI 10.1063/1.871325 PG 9 WC Physics, Fluids & Plasmas SC Physics GA QZ330 UT WOS:A1995QZ33000046 ER PT J AU OTT, E SPANO, M AF OTT, E SPANO, M TI CONTROLLING CHAOS SO PHYSICS TODAY LA English DT Article ID TRACKING UNSTABLE ORBITS; DIRECT TRAJECTORIES; SYSTEM; LASER C1 UNIV MARYLAND,INST SYST RES,COLLEGE PK,MD 20742. USN,CTR SURFACE WARFARE,SILVER SPRING,MD 20903. GEORGIA INST TECHNOL,APPL CHAOS LAB,ATLANTA,GA 30332. RP OTT, E (reprint author), UNIV MARYLAND,INST PLASMA RES,COLLEGE PK,MD 20742, USA. RI Spano, Mark/B-6883-2011; O, E/F-1630-2015 NR 35 TC 74 Z9 74 U1 0 U2 4 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0031-9228 J9 PHYS TODAY JI Phys. Today PD MAY PY 1995 VL 48 IS 5 BP 34 EP 40 DI 10.1063/1.881461 PG 7 WC Physics, Multidisciplinary SC Physics GA QW822 UT WOS:A1995QW82200006 ER PT J AU ARMSTRONG, JT HUTTER, DJ JOHNSTON, KJ MOZURKEWICH, D AF ARMSTRONG, JT HUTTER, DJ JOHNSTON, KJ MOZURKEWICH, D TI STELLAR OPTICAL INTERFEROMETRY IN THE 1990S SO PHYSICS TODAY LA English DT Article ID STARS C1 USN OBSERV,DEPT ASTROMETRY,DIV INTERFEROMETRY,WASHINGTON,DC. NRL,CTR ADV SPACE SENSING,WASHINGTON,DC. NRL,DIV REMOTE SENSING,RADIO INFRARED OPT SENSORS BRANCH,WASHINGTON,DC. RP ARMSTRONG, JT (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 22 TC 24 Z9 24 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0031-9228 J9 PHYS TODAY JI Phys. Today PD MAY PY 1995 VL 48 IS 5 BP 42 EP 49 PG 8 WC Physics, Multidisciplinary SC Physics GA QW822 UT WOS:A1995QW82200007 ER PT J AU WAGNER, LS GOLDSTEIN, JA RUPAR, MA AF WAGNER, LS GOLDSTEIN, JA RUPAR, MA TI DELAY, DOPPLER, AND AMPLITUDE CHARACTERISTICS OF HF SIGNALS RECEIVED OVER A 1300-KM TRANSAURORAL SKY WAVE CHANNEL SO RADIO SCIENCE LA English DT Article; Proceedings Paper CT Ionospheric Effects Symposium (IES 93) CY 1993 CL ALEXANDRIA, VA SP USN, NAVAL RES LAB, PHILLIPS LAB, USA, SPACE & TERRESTRIAL COMMUN DIRECTORATE, USN, OFF NAVAL RES ID REGION AB Channel probe observations of propagation conditions along a 1294-km transauroral path between Sondrestrom, Greenland, and Keflavik, Iceland, were made during the period from March 13 to April 2, 1992. The midpoint of this path was located at a corrected geomagnetic latitude of 72 degrees. The objective of these measurements was to supplement the existing data base describing propagation conditions on the HF transauroral channel with data pertaining to a period around the time of solar maximum. Received signals for this path fell into three distinct groups depending on their amplitude and delay and Doppler spread characteristics. These are (1) strong, specularly reflected ionospheric returns characteristic of a quiescent daytime ionospheric channel during magnetically quiet conditions; (2) strong specular multipath signals reflected from horizontal gradients of electron density and regularly encountered at night; and (3) weak scatter returns that are also a persistent nighttime phenomenon. The scatter returns are usually observed at delays exceeding those anticipated for the one-hop return and, very often, at frequencies that are well above the MUF for the great circle propagation path. The multipath and scatter returns exhibit large delay and Doppler spreads indicative of spatially extensive distributions of drifting and randomly moving irregularities. Two measurement events are discussed which illustrate these conclusions: a noontime measurement with Kp = 3, and a midnight measurement with Kp = 2. The noontime measurement exhibited a scatter return from an isolated irregularity region in addition to the usual ionospheric reflected signals. A simple irregularity drift model produced delay and Doppler shift curves that were consistent with those observed for the scatter component of the received signal and supported a hypothesis of an irregularity region drift speed of 1200 m s(-1) parallel to the great circle propagation path. RP WAGNER, LS (reprint author), USN,RES LAB,CODE 5554,WASHINGTON,DC 20375, USA. NR 24 TC 7 Z9 7 U1 0 U2 0 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0048-6604 J9 RADIO SCI JI Radio Sci. PD MAY-JUN PY 1995 VL 30 IS 3 BP 659 EP 676 DI 10.1029/94RS03177 PG 18 WC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology & Atmospheric Sciences; Remote Sensing; Telecommunications SC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology & Atmospheric Sciences; Remote Sensing; Telecommunications GA RB414 UT WOS:A1995RB41400016 ER PT J AU REILLY, MH AF REILLY, MH TI VIRTUAL HEIGHTS FOR OBLIQUE PATH CALCULATIONS SO RADIO SCIENCE LA English DT Article; Proceedings Paper CT Ionospheric Effects Symposium (IES 93) CY 1993 CL ALEXANDRIA, VA SP USN, NAVAL RES LAB, PHILLIPS LAB, USA, SPACE & TERRESTRIAL COMMUN DIRECTORATE, USN, OFF NAVAL RES AB The propagation model of the Ionospheric Communications Analysis and Predictions Program (IONCAP) program, which is designed for fast throughput calculations in the prediction of high-frequency sky wave system performance, makes use of virtual heights, as calculated from known height profiles of the electron density. Use of these for oblique path calculations relies on the well known flat Earth theorems of Breit-Tuve and Martyn, with additional curved Earth correction terms. These approximate corrections are examined in the light of exact results from other models, and alternative strategies are discussed. RP REILLY, MH (reprint author), USN,RES LAB,DEPT SPACE SYST DEV,MISS DEV BRANCH,CODE 8111,WASHINGTON,DC 20375, USA. NR 9 TC 0 Z9 0 U1 1 U2 1 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0048-6604 J9 RADIO SCI JI Radio Sci. PD MAY-JUN PY 1995 VL 30 IS 3 BP 677 EP 682 DI 10.1029/94RS03180 PG 6 WC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology & Atmospheric Sciences; Remote Sensing; Telecommunications SC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology & Atmospheric Sciences; Remote Sensing; Telecommunications GA RB414 UT WOS:A1995RB41400017 ER PT J AU SAILORS, DB AF SAILORS, DB TI A DISCREPANCY IN THE INTERNATIONAL-RADIO-CONSULTATIVE-COMMITTEE REPORT-322-3 RADIO NOISE MODEL - THE PROBABLE CAUSE SO RADIO SCIENCE LA English DT Article; Proceedings Paper CT Ionospheric Effects Symposium (IES 93) CY 1993 CL ALEXANDRIA, VA SP USN, NAVAL RES LAB, PHILLIPS LAB, USA, SPACE & TERRESTRIAL COMMUN DIRECTORATE, USN, OFF NAVAL RES ID SCATTERED DATA; INTERPOLATION; SURFACE; SPHERE AB The cause of a discrepancy in the CCIR Report 322-3 (International Radio Consultative Committee (CCIR), 1988) radio noise model is reported. The basis for this discrepancy results from the procedure used to prepare the measured noise data for the determination of a global numerical representation of the 1-MHz data. In the development of the model, correction factors fo an older CCIR model were determined for each measurement site. These corrections were interpolated for each time block and season to a grid of 100 latitude points by 84 longitude points. The correction factors at each grid point were then added to corresponding values for the older CCIR model, and finally, the resulting data for each time block and season were numerically mapped. Nineteen locations were used in the final model. Four sites used in the original CCIR model were not used. As either no correction factors were obtained for these locations or a correction factor of zero was used to maintain the status quo, the interpolation algorithm produced erroneous values near these four sites in determining the 100-by-84 grid of correction factors. For Bill, Wyoming, the result is not too serious; but for the other three sites at some seasons and time of day, the error is serious. For Thule, Greenland; for Ibadan, Nigeria; and for Byrd Station, Antarctica; the maximum and minimum errors were 10.1 and -10.8 dB; 12.5 and -1.5 dB; and 12.0 and 3.0 dB, respectively. Examination of the geographical extent of these errors reveals that the error is not confined to the measurement location but in fact can be very large. This geographical enhancement of the error is most serious during June, July, and August and least serious during December, January, and February. The error as a function of frequency was found to be diurnally dependent, being more serious during the daytime hours. The absence of the data locations as nodes in the interpolation affected the accuracy of the interpolation itself. The CCIR Report 322-3 atmospheric noise model should be used with caution, especially for locations in the northern and southern high latitudes, the Arabian Peninsula, northern Africa, and the Mid-Atlantic Ocean areas. RP SAILORS, DB (reprint author), USN,CTR COMMAND CONTROL & OCEAN SURVEILLANCE,DIV RDT&E 542,53570 SILVERGATE AVE,RM 2505,SAN DIEGO,CA 92152, USA. NR 22 TC 0 Z9 0 U1 0 U2 0 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0048-6604 J9 RADIO SCI JI Radio Sci. PD MAY-JUN PY 1995 VL 30 IS 3 BP 713 EP 728 DI 10.1029/94RS03188 PG 16 WC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology & Atmospheric Sciences; Remote Sensing; Telecommunications SC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology & Atmospheric Sciences; Remote Sensing; Telecommunications GA RB414 UT WOS:A1995RB41400021 ER PT J AU HEADRICK, JM ROOT, BT THOMASON, JF AF HEADRICK, JM ROOT, BT THOMASON, JF TI RADARC MODEL COMPARISONS WITH AMCHITKA RADAR DATA SO RADIO SCIENCE LA English DT Article; Proceedings Paper CT Ionospheric Effects Symposium (IES 93) CY 1993 CL ALEXANDRIA, VA SP USN, NAVAL RES LAB, PHILLIPS LAB, USA, SPACE & TERRESTRIAL COMMUN DIRECTORATE, USN, OFF NAVAL RES AB Data collected with the AN/TPS-71 relocatable over-the-horizon radar (ROTHR) has been used to validate the RADARC Model. For the first 10 days of January, April, and July, 1200 and 0000 UTC, the vertical ionograms, oblique backscatter soundings, radar ground backscatter amplitudes, and noise levels have been compared with model predictions. The differences between the model and median h'f soundings are small enough to have negligble effect on predictions. The coverage predicted for oblique backscatter soundings agrees well with observed median data except for sporadic E effects which were underestimated. Medians of observed ground backscatter levels agree fairly well with predictions. The actual noise that controlled radar performance was the most significant deviation from the model; all nighttime and January day noise was higher than that predicted, and this was due to spread-in-Doppler clutter appearing as noise. RP HEADRICK, JM (reprint author), USN,RES LAB,DIV RADAR,CODE 5309,WASHINGTON,DC 20375, USA. NR 9 TC 0 Z9 0 U1 1 U2 3 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0048-6604 J9 RADIO SCI JI Radio Sci. PD MAY-JUN PY 1995 VL 30 IS 3 BP 729 EP 737 DI 10.1029/94RS03184 PG 9 WC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology & Atmospheric Sciences; Remote Sensing; Telecommunications SC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology & Atmospheric Sciences; Remote Sensing; Telecommunications GA RB414 UT WOS:A1995RB41400022 ER PT J AU MCNEAL, GD AF MCNEAL, GD TI THE HIGH-FREQUENCY ENVIRONMENT AT THE ROTHR AMCHITKA RADAR SITE SO RADIO SCIENCE LA English DT Article; Proceedings Paper CT Ionospheric Effects Symposium (IES 93) CY 1993 CL ALEXANDRIA, VA SP USN, NAVAL RES LAB, PHILLIPS LAB, USA, SPACE & TERRESTRIAL COMMUN DIRECTORATE, USN, OFF NAVAL RES AB The successful performance of a high-frequency (HF) over-the-horizon radar (OTHR) is dependent upon the environment in which the radar must operate. This study investigates measured power levels of noise and signal characteristics in the HF environment of an operational OTHR system located in Amchitka, Alaska. These measurements were acquired by the Navy's AN/TPS-71 radar (ROTHR) spectrum monitor and represent a new source of HF environmental measurements for noise characteristics, channel availability, and expected duration of various channel widths as a function of frequency, time of day, and season of year. The analysis and results presented are based on HF environmental measurements obtained over the 5-28 MHz frequency band by a receiver with a very low noise figure, an efficient antenna, high dynamic range, and which was seldom internally noise limited. The analysis of this data has provided information on power levels associated with noise and HF users in the geographic region of the radar. Clear channel availability results are based on a threshold level defined by empirical distribution functions (EDF) of the measured power levels from the ROTHR site in Amchitka, Alaska. RP MCNEAL, GD (reprint author), USN,RES LAB,CODE 5325,WASHINGTON,DC 20375, USA. NR 8 TC 12 Z9 13 U1 0 U2 1 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0048-6604 J9 RADIO SCI JI Radio Sci. PD MAY-JUN PY 1995 VL 30 IS 3 BP 739 EP 746 PG 8 WC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology & Atmospheric Sciences; Remote Sensing; Telecommunications SC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology & Atmospheric Sciences; Remote Sensing; Telecommunications GA RB414 UT WOS:A1995RB41400023 ER PT J AU FERGUSON, JA AF FERGUSON, JA TI IONOSPHERIC MODEL VALIDATION AT VLF AND LF SO RADIO SCIENCE LA English DT Article; Proceedings Paper CT Ionospheric Effects Symposium (IES 93) CY 1993 CL ALEXANDRIA, VA SP USN, NAVAL RES LAB, PHILLIPS LAB, USA, SPACE & TERRESTRIAL COMMUN DIRECTORATE, USN, OFF NAVAL RES AB A reliable knowledge of radio signal amplitude and phase characteristics is required to design and maintain communications and navigational circuits at VLF and LF. The ability to accurately calculate signal levels as a function of frequency, position, and time is of considerable importance in achieving reliable assessment of communication coverage. Detailed computer models based on multiple mode waveguide theory have been developed. These models have been found to produce good comparisons between measurements and calculations of signal variations as a function of propagation distance. However, results can be very sensitive to the ionospheric inputs to these computer models. This paper has two purposes. The first is to present the results of a systematic comparison of a set of measurements of signal strength from various transmitters over a number of propagation paths using a simple model of the ionosphere. The variation of the parameters of this simple model with basic propagation parameters is examined. The second purpose is to examine the built-in version of this simple model of the ionosphere as implemented in the Long Wave Propagation Capability. This model is found to adequately represent a set of in-flight signal strength measurements. It is also clear that there is still room for improvements in this ionospheric model. RP FERGUSON, JA (reprint author), USN,CTR COMMOND CONTROL & OCEAN SURVEILLANCE,DIV RDT&E 542,53570 SILVERGATE AVE,RM 2505,SAN DIEGO,CA 92152, USA. NR 23 TC 10 Z9 10 U1 1 U2 2 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0048-6604 J9 RADIO SCI JI Radio Sci. PD MAY-JUN PY 1995 VL 30 IS 3 BP 775 EP 782 DI 10.1029/94RS03190 PG 8 WC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology & Atmospheric Sciences; Remote Sensing; Telecommunications SC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology & Atmospheric Sciences; Remote Sensing; Telecommunications GA RB414 UT WOS:A1995RB41400027 ER PT J AU SHUMAKER, RP AF SHUMAKER, RP TI SOFTWARE-DEVELOPMENT - A SMALL MATTER OF PROGRAMMING SO SEA TECHNOLOGY LA English DT Article C1 USN,RES LAB,NAVY CTR APPL RES ARTIFICIAL INTELLIGENCE,WASHINGTON,DC 20375. RP SHUMAKER, RP (reprint author), USN,RES LAB,DIV INFORMAT TECHNOL,WASHINGTON,DC 20375, 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 MAY PY 1995 VL 36 IS 5 BP 10 EP 14 PG 5 WC Engineering, Ocean SC Engineering GA QZ572 UT WOS:A1995QZ57200002 ER PT J AU DURHAM, DL AF DURHAM, DL TI US-NAVY OPERATIONAL OCEANOGRAPHIC NOWCAST FORECAST SYSTEM - METEOROLOGICAL, OCEANOGRAPHIC MODELS SUPPORT NAVAL, MARINE-CORPS FORCES IN CRITICAL CONTIGUOUS SEAS, COASTAL ZONES SO SEA TECHNOLOGY LA English DT Article RP DURHAM, DL (reprint author), USN,METEOROL & OCEANOG COMMAND,BAY ST LOUIS,MS, 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 MAY PY 1995 VL 36 IS 5 BP 59 EP 62 PG 4 WC Engineering, Ocean SC Engineering GA QZ572 UT WOS:A1995QZ57200009 ER PT J AU WHITTEN, RC AF WHITTEN, RC TI THE PENTAGON WARS - REFORMERS CHALLENGE THE OLD GUARD - BURTON,JG SO SOCIETY LA English DT Book Review RP WHITTEN, RC (reprint author), USN LEAGUE,WASHINGTON,DC, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU TRANSACTION PERIOD CONSORTIUM PI NEW BRUNSWICK PA DEPT 3091 RUTGERS-THE STATE UNIV OF NJ, NEW BRUNSWICK, NJ 08903 SN 0147-2011 J9 SOCIETY JI Society PD MAY-JUN PY 1995 VL 32 IS 4 BP 92 EP 92 PG 1 WC Social Sciences, Interdisciplinary; Sociology SC Social Sciences - Other Topics; Sociology GA QU483 UT WOS:A1995QU48300019 ER PT J AU THOMS, BD BUTLER, JE AF THOMS, BD BUTLER, JE TI HREELS AND LEED OF H/C(100) - THE 2X1 MONOHYDRIDE DIMER ROW RECONSTRUCTION SO SURFACE SCIENCE LA English DT Article DE DIAMOND; ELECTRON ENERGY LOSS SPECTROSCOPY; HYDROGEN; LOW ENERGY ELECTRON DIFFRACTION (LEED); LOW INDEX SINGLE CRYSTAL SURFACES; SEMICONDUCTING SURFACES; SURFACE RELAXATION AND RECONSTRUCTION; SURFACE STRUCTURE, MORPHOLOGY, ROUGHNESS, AND TOPOGRAPHY ID CHEMICAL-VAPOR-DEPOSITION; DIAMOND 100 SURFACE; C(100) SURFACES; HYDROGEN; GROWTH; ADSORPTION; FILMS; SPECTROSCOPY; MICROSCOPY; DESORPTION AB High resolution electron energy loss spectroscopy (HREELS) and low energy electron diffraction (LEED) have been used to investigate the hydrogen (deuterium) atom exposed diamond (100) surface. HREEL spectra indicate only monohydride species after ex situ exposure of the surface at 800 degrees C to a hydrogen plasma. Likewise, no dihydride is observed after in situ exposure of the surface to hydrogen atoms produced by a hot tungsten filament. In addition, a sharp two-domain 2 X 1 reconstruction is observed by LEED for the hydrogen (deuterium) saturated surface. These data indicate that hydrogenated C(100) assumes the monohydride dimer row reconstruction. A two-domain 2 X 1 LEED pattern is also observed from C(100) following heating to approximately 1050 degrees C and HREEL spectra show no features due to adsorbed hydrogen (deuterium). These data are consistent with the pi-bonded dimer row reconstruction for bare C(100). HREEL spectra of the bare surface show peaks at 710, 1060, and 1280 cm(-1). RP THOMS, BD (reprint author), USN,RES LAB,GAS SURFACE DYNAM SECT,CODE 6174,WASHINGTON,DC 20375, USA. RI Butler, James/B-7965-2008 OI Butler, James/0000-0002-4794-7176 NR 57 TC 110 Z9 110 U1 3 U2 11 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0039-6028 J9 SURF SCI JI Surf. Sci. PD MAY 1 PY 1995 VL 328 IS 3 BP 291 EP 301 DI 10.1016/0039-6028(95)00039-9 PG 11 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA QW796 UT WOS:A1995QW79600019 ER PT J AU MEHL, PM AF MEHL, PM TI SUPPRESSION OF CRYSTALLIZATION IN THE BINARY-SYSTEM 1,2-PROPANEDIOL-DEUTERIUM OXIDE - COMPARISON WITH LIGHT-WATER AS SOLVENT SO THERMOCHIMICA ACTA LA English DT Article DE CRYSTALLIZATION; DEUTERIUM OXIDE; NUCLEATION; PHASE DIAGRAM; PROPANEDIOL; SLE; VITRIFICATION; WATER ID AQUEOUS-SOLUTIONS; GLASS-TRANSITION; VITRIFICATION; NUCLEATION; D2O; CRYOPRESERVATION; CRYOMICROSCOPY; 1,3-BUTANEDIOL; TEMPERATURE; PRESSURE AB The solid-liquid phase diagram of the binary system D2O-1,2-propanediol has been studied for concentrations up to 50% w/w. The homogeneous nucleation was also analyzed using an emulsification technique within the classical theory. The isothermal and non-isothermal crystallizations of ice were studied during warming for samples which vitrify during the initial cooling down below the glass transition. The thermal analysis was performed using the Johnson-Mehl-Avrami model extended to non-isothermal conditions. Comparisons are made with previous results from the binary system H2O-1,2-propanediol. The suppression of crystallization during cooling is similar for both binary systems for concentrations in %mole/mole. The differences between melting and devitrification temperatures are also similar. The results do not indicate major differences between the crystallization kinetics with H2O or with D2O. Calculations of the kinetics parameters do, however, underline detailed differences. The suppression of the nucleation of ice is steeper for the D2O system than for the H2O system, even if the homogeneous nucleation temperatures are higher with D2O than with H2O. Estimates of the solid-liquid surface free energies are higher for the H2O solvent than for the D2O solvent and decrease as the 1,2-propanediol concentration increases. They cross over for a concentration close to 89% mole/mole solvent. For the isothermal and non-isothermal crystallization, the determination of the Avrami exponent is similar for the two solvents, with values of between 2.5 and 2 for solute concentrations higher than 37.5% w/w. However, D2O presents higher absolute activation energy values than H2O. These variations confirm that the nucleation is better suppressed and the crystal growth less suppressed by addition of 1,2-propanediol in D2O solutions than in H2O solutions for dilute concentrations. C1 AMER RED CROSS,HOLLAND LAB,ROCKVILLE,MD 20855. RP MEHL, PM (reprint author), USN,MED RES INST,TRANSFUS MED RES PROGRAM,8901 WISCONSIN AVE,BLDG 29,BETHESDA,MD 20889, USA. NR 31 TC 1 Z9 1 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0040-6031 J9 THERMOCHIM ACTA JI Thermochim. Acta PD MAY 1 PY 1995 VL 255 BP 297 EP 317 DI 10.1016/0040-6031(94)02134-A PG 21 WC Thermodynamics; Chemistry, Analytical; Chemistry, Physical SC Thermodynamics; Chemistry GA RA042 UT WOS:A1995RA04200026 ER PT J AU HARABIN, AL SURVANSHI, SS HOMER, LD AF HARABIN, AL SURVANSHI, SS HOMER, LD TI A MODEL FOR PREDICTING CENTRAL-NERVOUS-SYSTEM OXYGEN-TOXICITY FROM HYPERBARIC-OXYGEN EXPOSURES IN HUMANS SO TOXICOLOGY AND APPLIED PHARMACOLOGY LA English DT Article AB Under certain circumstances, Navy divers breathe 100% O-2 when working underwater, Serious symptoms of central nervous system (CNS) O-2 toxicity can develop from hyperbaric O-2 exposure; immersion and exercise are also known to exacerbate toxicity. We developed risk models for quantitative prediction of the probability of developing symptoms using a large set of human data in which occupational exposure conditions were simulated, Exposures were 5 to 265 min at P-o2 levels from 20 to 50 feet of sea water (fsw) (1 fsw = 3.06 kPa). Approximately half of the exposures were to a single P-o2, while the remainder were more complicated consisting of exposures to multiple levels of hyperbaric O-2. In 688 trials, there were 42 exposure-stopping symptoms. We used maximum likelihood to estimate parameters, likelihood ratios to compare model fits, and chi(2) tests to judge goodness-of-fit of model predictions to observations. The modeling shows that risk has a steep P-o2 dependence. A model with autocatalytic features fits the data as well as a simpler model: when P-o2 is elevated beyond 34 fsw, risk accumulates rapidly without bound while accumulating toward an asymptote at lower P-o2 levels. This autocatalytic feature of risk accumulation implies a testable hypothesis that substantial protection from human CNS O-2 toxicity can be obtained from intermittent exposure (periodic exposure to lower P-o2). The models predict that the probability of O-2 toxicity is less than 7% with current Navy limits while breathing 95% O-2. Probability of symptoms is <1% if FIO2 is maintained at the United States Navy recommended level of 75%. RP HARABIN, AL (reprint author), USN,MED RES INST,8901 WISCONSIN AVE,BETHESDA,MD 20889, USA. NR 17 TC 10 Z9 11 U1 0 U2 3 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 SN 0041-008X J9 TOXICOL APPL PHARM JI Toxicol. Appl. Pharmacol. PD MAY PY 1995 VL 132 IS 1 BP 19 EP 26 DI 10.1006/taap.1995.1082 PG 8 WC Pharmacology & Pharmacy; Toxicology SC Pharmacology & Pharmacy; Toxicology GA QY789 UT WOS:A1995QY78900003 PM 7747281 ER PT J AU CORWIN, A JAROT, K LUBIS, I NASUTION, K SUPARMAWO, S SUMARDIATI, A WIDODO, S NAZIR, S ORNDORFF, G CHOI, Y TAN, R SIE, A WIGNALL, S GRAHAM, R HYAMS, K AF CORWIN, A JAROT, K LUBIS, I NASUTION, K SUPARMAWO, S SUMARDIATI, A WIDODO, S NAZIR, S ORNDORFF, G CHOI, Y TAN, R SIE, A WIGNALL, S GRAHAM, R HYAMS, K TI 2 YEARS INVESTIGATION OF EPIDEMIC HEPATITIS-E VIRUS TRANSMISSION IN WEST KALIMANTAN (BORNEO), INDONESIA SO TRANSACTIONS OF THE ROYAL SOCIETY OF TROPICAL MEDICINE AND HYGIENE LA English DT Article DE HEPATITIS E VIRUS; EPIDEMIOLOGY; SEROLOGY; INDONESIA ID NON-B-HEPATITIS; NON-A; MOLECULAR-BIOLOGY AB Two years' follow-up investigation of a hepatitis E virus (HEV) outbreak in West Kalimantan, Indonesia in 1991 was carried out to investigate the epidemiology of epidemic HEV transmission and the persistence of the immunoglobulin G (IgG) antibody response. Sixty cases identified as anti-HEV IgG positive during the outbreak in 1991 were matched with 67 controls and examined, together with 318 members of their families. Overall, the prevalence of anti-HEV IgG among the 445 subjects (representing 127 households) was 59%. There was no significant difference in anti-HEV prevalence between cases (72%) and controls (61%). Loss of detectable anti-HEV IgG after 2 years was demonstrated in 17 of 60 subjects (28%) who were originally positive for anti-HEV in 1991. The mean number of anti-HEV positive subjects per household was 2.04. Cross-sectional prevalence of anti-HEV IgG increased significantly with age (P=0.01). When communities were grouped into areas of low (<40%), medium (40-59%) and high (greater than or equal to 60%) anti-HEV prevalence, use of river water for drinking and cooking (P<0.001), personal washing (P<0.0001), and human excreta disposal (P<0.001) were associated with high prevalence communities. Conversely, boiling drinking water was negatively associated with increased prevalence(P=0.02). Subnormal rainfall during the month (August) leading up to the 1991 outbreak (19 cm compared to the monthly mean of 209 cm in 1985-1993) may have contributed to favourable epidemic conditions. C1 DINAS KESEHATAN,KABUPATEN SINTANG,INDONESIA. NATL INST HLTH,LITBANGKES,JAKARTA,INDONESIA. MINIST HLTH,FIELD EPIDEMIOL TRAINING PROGRAM,JAKARTA,INDONESIA. RSPAD GATOT SUBROTO,DEPT INTERNAL MED,JAKARTA,INDONESIA. USN,MED RES INST,BETHESDA,MD. KANTOR WILAYAH,DEPT KESEHATAN,PONTIANAK,INDONESIA. RP CORWIN, A (reprint author), USN,MED RES UNIT 2,JAKARTA,INDONESIA. NR 13 TC 39 Z9 40 U1 0 U2 4 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 MAY-JUN PY 1995 VL 89 IS 3 BP 262 EP 265 DI 10.1016/0035-9203(95)90529-4 PG 4 WC Public, Environmental & Occupational Health; Tropical Medicine SC Public, Environmental & Occupational Health; Tropical Medicine GA RF454 UT WOS:A1995RF45400007 PM 7660427 ER PT J AU BERTHA, CM FLIPPENANDERSON, JL ROTHMAN, RB PORRECA, F DAVIS, P XU, H BECKETTS, K CHA, XY RICE, KC AF BERTHA, CM FLIPPENANDERSON, JL ROTHMAN, RB PORRECA, F DAVIS, P XU, H BECKETTS, K CHA, XY RICE, KC TI PROBES FOR NARCOTIC RECEPTOR-MEDIATED PHENOMENA .20. ALTERATION OF OPIOID RECEPTOR SUBTYPE SELECTIVITY OF THE 5-(3-HYDROXYPHENYL)MORPHANS BY APPLICATION OF THE MESSAGE-ADDRESS CONCEPT - PREPARATION OF DELTA-OPIOID RECEPTOR LIGANDS SO JOURNAL OF MEDICINAL CHEMISTRY LA English DT Article ID PHARMACOLOGICAL CHARACTERIZATION; FUNCTIONAL EXPRESSION; INDUCED STIMULATION; BINDING-SITES; CLONING; ANTAGONIST; ANTINOCICEPTION; MODULATION; DEPENDENCE; TOLERANCE AB Derivatives of racemic and optically active 5-(3-hydroxyphenyl)-2-methylmorphan (5-(3-hydroxyphenyl)-2-methyl-2-azabicyclo[3.3.1]nonane, 1) were synthesized containing additional aromatic moieties, as an application of the message-address concept targeted at producing delta-opioid receptor selective ligands. In vitro radioreceptor binding studies in rat brain revealed that both of the parent enantiomers, (-)- and (+)-1, had a high affinity for the mu-opioid receptor (21 nM), a slight affinity for kappa(1)-opioid receptors (similar to 800-900 nM), and less than 1000 nM affinity for the delta-opioid receptor (mu/delta IC50 ratio of (0.02 for both). A derivative of(-)-1 containing an indole moiety fused at the C6-C7 position of the phenylmorphan nucleus, (-)-11, displayed a > 180-fold increase in affinity for the delta-opioid receptor with an IC50 value of 6 nM. The parent compound (-)-1 had only 26% agonist activity at 30 mu M in the mouse vas deferens (delta) bioassay, whereas compound (-)-11 had an IC50 Of 393 nM in this preparation, indicating the importance of the indole moiety in imparting delta-opioid agonist activity to the phenylmorphan (-)-11. A structure-activity relationship (SAR) study of N-alkyl derivatives of the racemic nor 11 indicated similarities between the interaction of various derivatives with the mu- and delta- but not the kappa(1)-opioid receptor. As studies on the molecular basis of the interaction of opioid ligands with their respective receptors continue to gain momentum, the SAR data described herein for the synthetic phenylmorphans will prove useful for further studies. C1 NIDDKD,MED CHEM LAB,BETHESDA,MD 20892. USN,RES LAB,STRUCT MATTER LAB,WASHINGTON,DC 20375. NIDA,ADDICT RES CTR,CLIN PSYCHOPHARMACOL SECT,BALTIMORE,MD 21224. UNIV ARIZONA,ARIZONA HLTH SCI CTR,DEPT PHARMACOL,TUCSON,AZ 85724. NR 55 TC 12 Z9 12 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0022-2623 J9 J MED CHEM JI J. Med. Chem. PD APR 28 PY 1995 VL 38 IS 9 BP 1523 EP 1537 DI 10.1021/jm00009a013 PG 15 WC Chemistry, Medicinal SC Pharmacology & Pharmacy GA QV560 UT WOS:A1995QV56000013 PM 7739011 ER PT J AU SOTO, MR AF SOTO, MR TI RATE-CONSTANT DETERMINATIONS FOR HBO+F CHANNELS FROM AB-INITIO REACTION-PATH CALCULATIONS SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article ID R = H; CONFIGURATION-INTERACTION; ELECTRONIC-STRUCTURE; BASIS-SETS; AFFINITIES; SPECTRA; HEATS; HBF+; CH3; HCN AB Understanding the detailed mechanism of boron combustion in;the presence of fluorine has important consequences to the development of energetic materials. From a recently proposed reaction mechanism,(1) one of the dominant reactions for which very little kinetic or mechanistic information is available is HBO + F --> FBO + H. Ab initio multiconfigurational methods have been used to study two reactive pathways stemming from the reactants HBO + F. These are HBO + F --> HF + BO and HBO + F --> H(F)BO --> H + FBO. The optimized structures and harmonic vibrational frequencies of the stationary points are reported, and other features of the potential energy surface of HBOF are discussed. Furthermore, the rate constants were calculated by using transition-state theory and variational transition-state theory. For reaction 2, Delta H-R = -20.7 kcal/mol, E(A) = 2.7 kcal/mol, and k(2)(T) = (5.08 x 10(-16))T-1.77 exp(-1666/T) cm(3) molecule(-1) s(-1). Reaction 3a is two and a half times more exothermic than reaction 2 and proceeds without a barrier. For this reaction, Delta H-R = -56.5 kcal/mol and k(3a)(T) = (4.22 x 10(-14))T-0.98 exp(353/T) cm(3) molecule(-1) s(-1). Reaction 3b is endothermic with Delta H-R = 9.9 kcal/mol, E(A) = 13.0 kcal/mol, and k(3b)(T) = (7.00 X 10(13))T--0.01 exp(7817/T) s(-1). These calculations predict that reaction 1 proceeds through the formation of an H(F)BO complex which dissociates to form FBO + H. At low temperatures, the complex formation dominates the HBO + F reaction, but at temperatures exceeding 1500 K it competes with the abstraction pathway. These findings have important implications to the development of the reaction mechanism because they predict the formation of a complex which was not previously included in the model, and they provide kinetic parameters that are not available experimentally. RP SOTO, MR (reprint author), USN,RES LAB,COMPUTAT PHYS & FLUID DYNAM LAB,CODE 6410,WASHINGTON,DC 20375, USA. NR 25 TC 10 Z9 10 U1 0 U2 0 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 APR 27 PY 1995 VL 99 IS 17 BP 6540 EP 6547 DI 10.1021/j100017a039 PG 8 WC Chemistry, Physical SC Chemistry GA QV527 UT WOS:A1995QV52700039 ER PT J AU NAY, JC PITT, WG ARMSTRONGCARROLL, E AF NAY, JC PITT, WG ARMSTRONGCARROLL, E TI IMPROVING ADHESION IN INTERLEAF COMPOSITES USING PLASMA PROCESSING SO JOURNAL OF APPLIED POLYMER SCIENCE LA English DT Article AB A novel radio frequency (RF) plasma processing technique, known as plasma induced polymerization (PIP), was used in a multistep plasma process to deposit a thin, uniform layer of viscoelastic material on Upilex-S high-temperature polyimide film in order to enhance adhesion between the film and the resin in carbon fiber interleaf composites using epoxy (Hercules 8551-7A) resin systems. In a three-phase study, the processing parameters of residence time, plasma power, plasma pressure, and monomer gas were varied to investigate adhesion improvement. Depositions were characterized using scanning electron microscopy and X-ray photoelectron spectroscopy (XPS) analysis. Compressive mode II strain energy release rate (G(IIc)) was characterized by end-notched flexure testing to rank and predict the best RF process for a thermoplastic film interleaf composite structure using polyimide film. Adhesion was improved by as much as 140% over the adhesive performance of untreated Upilex-S using the epoxy resin system. However, adhesive performance was improved in the relatively low temperature (177 degrees C) processing system, and this plasma deposition may not be stable at the higher processing temperatures needed for processing polyimide matrix systems such as PMR-15. (C) 1995 John Wiley and Sons, Inc. C1 BRIGHAM YOUNG UNIV,COLL ENGN & TECHNOL,PROVO,UT 84602. USN,CTR AIR WARFARE,WARMINSTER,PA 18974. NR 18 TC 5 Z9 5 U1 0 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 APR 25 PY 1995 VL 56 IS 4 BP 461 EP 469 DI 10.1002/app.1995.070560407 PG 9 WC Polymer Science SC Polymer Science GA QP626 UT WOS:A1995QP62600007 ER PT J AU ROLAND, CM AF ROLAND, CM TI MECHANICAL AND DIELECTRIC-SPECTROSCOPY OF AROCLOR, 1,2-POLYBUTADIENE, AND THEIR MIXTURES SO MACROMOLECULES LA English DT Article ID ADAM-GIBBS FORMULATION; GLASS-FORMING LIQUIDS; SEGMENTAL RELAXATION; EPOXIDIZED POLYISOPRENE; VISCOELASTIC PROPERTIES; TEMPERATURE-DEPENDENCE; ENTHALPY RELAXATION; AMORPHOUS POLYMERS; SOLVENT DYNAMICS; FREE-VOLUME AB Dynamic mechanical and dielectric spectra were obtained in the glass transition zone for Aroclor 1248 (a polychlorinated biphenyl), for a low molecular weight polybutadiene (88% 1,2-microstructure), and for a 50% mixture. The neat materials exhibit two different and unusual characteristics. For Aroclor, the shape of the relaxation function measured mechanically is quite different from the dielectric result. In accord with the well-established correlation between time and temperature dependences, the relaxation times for the (narrower) dielectric spectrum exhibit a weaker temperature dependence. Dielectric and mechanical relaxation functions measured for the polybutadiene are in dose agreement; however, the shape of the spectrum varies with temperature. Thus, neat polybutadiene with high vinyl content is thermorheologically complex at temperatures near T-g. The 50% mixture displays the previously observed anomaly of isothermal relaxation proceeding faster than that of the neat components. A comparison of this effect as measured mechanically and dielectrically implies that its origin is a positive excess mixing volume. RP ROLAND, CM (reprint author), USN,RES LAB,DIV CHEM,CODE 6120,WASHINGTON,DC 20375, USA. NR 45 TC 29 Z9 29 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 APR 24 PY 1995 VL 28 IS 9 BP 3463 EP 3467 DI 10.1021/ma00113a053 PG 5 WC Polymer Science SC Polymer Science GA QV060 UT WOS:A1995QV06000054 ER PT J AU BAYER, M SCHMIDT, A FORCHEL, A FALLER, F REINECKE, TL KNIPP, PA DREMIN, AA KULAKOVSKII, VD AF BAYER, M SCHMIDT, A FORCHEL, A FALLER, F REINECKE, TL KNIPP, PA DREMIN, AA KULAKOVSKII, VD TI ELECTRON-HOLE TRANSITIONS BETWEEN STATES WITH NONZERO ANGULAR MOMENTA IN THE MAGNETOLUMINESCENCE OF QUANTUM DOTS SO PHYSICAL REVIEW LETTERS LA English DT Article ID WIRES; EMISSION C1 USN,RES LAB,WASHINGTON,DC 20375. CHRISTOPHER NEWPORT UNIV,DEPT PHYS & COMP SCI,NEWPORT NEWS,VA 23606. RUSSIAN ACAD SCI,INST SOLID STATE PHYS,CHERNOGOLOVKA 142432,RUSSIA. RP BAYER, M (reprint author), UNIV WURZBURG,D-97074 WURZBURG,GERMANY. OI Forchel, Alfred/0000-0002-9377-9935 NR 12 TC 77 Z9 79 U1 0 U2 3 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 APR 24 PY 1995 VL 74 IS 17 BP 3439 EP 3442 DI 10.1103/PhysRevLett.74.3439 PG 4 WC Physics, Multidisciplinary SC Physics GA QU827 UT WOS:A1995QU82700034 ER PT J AU INCHIOSA, ME BULSARA, AR AF INCHIOSA, ME BULSARA, AR TI COUPLING ENHANCES STOCHASTIC RESONANCE IN NONLINEAR DYNAMIC ELEMENTS DRIVEN BY A SINUSOID PLUS NOISE SO PHYSICS LETTERS A LA English DT Article ID SINGLE EFFECTIVE NEURON; BISTABLE SYSTEMS; INFORMATION AB We consider the response signal-to-noise ratio of a network of N globally and nonlinearly coupled overdamped nonlinear dynamic elements driven by a weak sinusoidal signal embedded in Gaussian white noise. In the ''stochastic resonance'' operating regime, the coupling significantly enhances the system's collective response over that of a single element. RP INCHIOSA, ME (reprint author), USN COMMAND, CTR CONTROL & OCEAN SURVEILLANCE, DIV RES DEV TEST & EVALUAT, MAT RES BRANCH, SAN DIEGO, CA 92152 USA. NR 50 TC 37 Z9 39 U1 0 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9601 J9 PHYS LETT A JI Phys. Lett. A PD APR 24 PY 1995 VL 200 IS 3-4 BP 283 EP 288 DI 10.1016/0375-9601(95)00198-C PG 6 WC Physics, Multidisciplinary SC Physics GA QV086 UT WOS:A1995QV08600010 ER PT J AU KORENDYKE, CM DERE, KP SOCKER, DG BRUECKNER, GE SCHMIEDER, B AF KORENDYKE, CM DERE, KP SOCKER, DG BRUECKNER, GE SCHMIEDER, B TI ULTRAVIOLET OBSERVATIONS OF THE STRUCTURE AND DYNAMICS OF AN ACTIVE-REGION AT THE LIMB SO ASTROPHYSICAL JOURNAL LA English DT Article DE SUN, ACTIVITY; SUN, CHROMOSPHERE; SUN, CORONA; SUN, TRANSITION REGION; SUN, UV RADIATION ID HIGH-RESOLUTION TELESCOPE; SOLAR TRANSITION ZONE; LINE RATIOS; SPECTROGRAPH; SUN; ACCELERATION; EJECTION; CORONA; JETS; WIND AB The structure and dynamics of active region NOAA 7260 at the limb has been studied using ultraviolet spectra and spectroheliograms obtained during the eighth rocket flight of the Naval Research Laboratory's High Resolution Telescope and Spectrograph (HRTS). The instrument configuration included a narrow-bandpass spectroheliograph to observe the Sun in the lines of C IV lambda 1550 and a tandem-Wadsworth mount spectrograph to record the profiles of chromospheric, transition region and coronal lines in the 1850-2670 Angstrom region. The combination of high spatial resolution and high spectral purity C IV slit jaw images with ultraviolet emission-line spectra corresponding allows examination of a variety of active region phenomena. A time series of spectroheliograms show large-scale loop systems composed of fine-scale threads with some extending up to 100 Mm above the limb. The proper motion of several supersonic features, including a surge were measured. The accelerated plasmas appear in several different geometries and environments. Spectrogaph exposures were taken with the slit positioned at a range of altitudes above the limb and provide a direct comparison between coronal, transition region and chromospheric emission line profiles. The spectral profiles of chromospheric and transition region emission lines show line-of-sight velocities up to 70 km s(-1). These lower temperature, emission-line spectra show small-scale spatial and velocity variations which are correlated with the threadlike structures seen in C IV. Coronal lines of Fe XII show much lower velocities and no fine structure. C1 OBSERV PARIS,DASOP,SECT MEUDON,F-92195 MEUDON,FRANCE. RP KORENDYKE, CM (reprint author), USN,RES LAB,EO HULBURT CTR SPACE RES,CODE 7660,WASHINGTON,DC 20375, USA. NR 26 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 APR 20 PY 1995 VL 443 IS 2 BP 869 EP 877 DI 10.1086/175577 PN 1 PG 9 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QU584 UT WOS:A1995QU58400037 ER PT J AU HYMAN, SD VANDYK, SD WEILER, KW SRAMEK, RA AF HYMAN, SD VANDYK, SD WEILER, KW SRAMEK, RA TI THE RADIO DETECTION OF SN 1968D IN NGC-6946 SO ASTROPHYSICAL JOURNAL LA English DT Article DE RADIO CONTINUUM, STARS; STARS, EVOLUTION; SUPERNOVA REMNANTS; SUPERNOVAE, GENERAL; SUPERNOVAE, INDIVIDUAL (SN 1968D) ID SUPERNOVA-REMNANTS; OPTICAL-EMISSION; M83; EVOLUTION; SN-1979C; MODEL AB We report the radio detection of the Type II supernova SN 1968D in the nearby spiral galaxy NGC 6946 from continuum observations at 6 and 21 cm using the Very Large Array. This radio detection is similar to 26 yr after its optical discovery. SN 1968D is only the fourth ''intermediate-age'' SN ever recovered in the radio. The current flux densities of this supernova at these wavelengths are consistent with the extrapolated radio behavior of another Type II supernova in this galaxy, the well-studied supernova SN 1980K. It is therefore likely that the radio emission from SN 1968D arises from the same mechanism as for SN 1980K and other known radio supernovae, i.e., interaction of the supernova shock with preexisting circumstellar matter. C1 UNIV CALIF BERKELEY,DEPT ASTRON,BERKELEY,CA 94720. USN,RES LAB,DIV REMOTE SENSING,WASHINGTON,DC 20375. NATL RADIO ASTRON OBSERV,SOCORRO,NM 87801. RP HYMAN, SD (reprint author), SWEET BRIAR COLL,DEPT PHYS,SWEET BRIAR,VA 24595, USA. OI Van Dyk, Schuyler/0000-0001-9038-9950 NR 34 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 APR 20 PY 1995 VL 443 IS 2 BP L77 EP L80 DI 10.1086/187840 PN 2 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QU585 UT WOS:A1995QU58500007 ER PT J AU SINGH, DJ PICKETT, WE AF SINGH, DJ PICKETT, WE TI SUPERCONDUCTIVITY OF BORO-NITRIDES SO NATURE LA English DT Letter RP SINGH, DJ (reprint author), USN,RES LAB,COMPLEX SYST THEORY BRANCH,WASHINGTON,DC 20375, USA. RI Singh, David/I-2416-2012 NR 9 TC 9 Z9 9 U1 0 U2 2 PU MACMILLAN MAGAZINES LTD PI LONDON PA 4 LITTLE ESSEX STREET, LONDON, ENGLAND WC2R 3LF SN 0028-0836 J9 NATURE JI Nature PD APR 20 PY 1995 VL 374 IS 6524 BP 682 EP 682 DI 10.1038/374682a0 PG 1 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA QU304 UT WOS:A1995QU30400034 ER PT J AU GEORGE, C GILARDI, RD ZAJAC, WW BUZBY, JH WALTERS, TR AF GEORGE, C GILARDI, RD ZAJAC, WW BUZBY, JH WALTERS, TR TI 3,7-DINITRONORADAMANTANE, C9H12N2O4, AND 3,7,9-TRINITRONORADAMANTANE, C9H11N3O(6) SO ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS LA English DT Article ID 1,3,5,7-TETRANITROADAMANTANE; 1,3,5,7-TETRAAMINOADAMANTANE AB The possible C-2v molecular symmetry for the dinitronoradamantane compound is not present; however, the carbon cages in each of the title compounds [3a,6a-dinitrooctahydro-2,5-methanopentalene and 3a,6a,7-trinitrooctahydro-2,5-methanopentalene, respectively] have approximate C-2v symmetry. Although the C-C-N-O torsion angles of the nitro groups differ significantly from the 90 degrees required for C-2v molecular symmetry, approximate C-2 symmetry is maintained for both molecules in the asymmetric unit, Bond distances and angles are near expected values with the exception of the C3-C7 bond distance in both title compounds which averages 1.594(4) Angstrom. C1 VILLANOVA UNIV,DEPT CHEM,VILLANOVA,PA 19085. RP GEORGE, C (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 19 TC 2 Z9 2 U1 0 U2 0 PU MUNKSGAARD INT PUBL LTD PI COPENHAGEN PA 35 NORRE SOGADE, PO BOX 2148, DK-1016 COPENHAGEN, DENMARK SN 0108-2701 J9 ACTA CRYSTALLOGR C JI Acta Crystallogr. Sect. C-Cryst. Struct. Commun. PD APR 15 PY 1995 VL 51 BP 703 EP 706 DI 10.1107/S0108270194011868 PN 4 PG 4 WC Chemistry, Multidisciplinary; Crystallography SC Chemistry; Crystallography GA QZ662 UT WOS:A1995QZ66200066 ER PT J AU WANG, J LARSON, D FOSTER, N ARMALIS, S LU, JM RONGRONG, X OLSEN, K ZIRINO, A AF WANG, J LARSON, D FOSTER, N ARMALIS, S LU, JM RONGRONG, X OLSEN, K ZIRINO, A TI REMOTE ELECTROCHEMICAL SENSOR FOR TRACE-METAL CONTAMINANTS SO ANALYTICAL CHEMISTRY LA English DT Note ID ANODIC-STRIPPING VOLTAMMETRY; ULTRAMICROELECTRODES AB An electrochemical sensor technology, based on stripping potentiometry at a 100-mu m gold fiber electrode, has been developed for remote detection of trace metal contaminants, The new probe circumvents technical difficulties, including the need for mercury surfaces, removal of oxygen, or forced convection, that previously prevented the adaptation of stripping analysis to in situ remote operations, The gold microelectrode, connected to a long communication cable, allows convenient measurements of trace copper, mercury, lead, or selenium at 3-4-min intervals and instrument/sample distances up to 32 m, The remarkable sensitivity of the probe is coupled with multielement capability, high stability, and simplicity, Field demonstrations involving both downhole ground-water monitoring and in situ shipboard seawater analysis were successful, The new probe should be extremely useful. for the characterization of priority metal pollutants in hazardous waste sites and for the immediate detection of sudden metal contaminations, C1 PACIFIC NW LAB, DEPT ENVIRONM SCI, RICHLAND, WA 99352 USA. USN, CTR OCEAN SYST, MARINE ENVIRONM BRANCH, SAN DIEGO, CA 92152 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 18 TC 67 Z9 67 U1 1 U2 11 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0003-2700 J9 ANAL CHEM JI Anal. Chem. PD APR 15 PY 1995 VL 67 IS 8 BP 1481 EP 1485 DI 10.1021/ac00104a029 PG 5 WC Chemistry, Analytical SC Chemistry GA QR985 UT WOS:A1995QR98500029 ER PT J AU BEVILACQUA, RM HOPPEL, KW HORNSTEIN, JS LUCKE, RL SHETTLE, EP AINSWORTH, TL DEBRESTIAN, D FROMM, MD KRIGMAN, SS LUMPE, J GLACCUM, W OLIVERO, JJ CLANCY, RT RANDALL, CE RUSCH, DW CHASSEFIERE, E DALAUDIER, F DENIEL, C BROGNIEZ, C LENOBLE, J AF BEVILACQUA, RM HOPPEL, KW HORNSTEIN, JS LUCKE, RL SHETTLE, EP AINSWORTH, TL DEBRESTIAN, D FROMM, MD KRIGMAN, SS LUMPE, J GLACCUM, W OLIVERO, JJ CLANCY, RT RANDALL, CE RUSCH, DW CHASSEFIERE, E DALAUDIER, F DENIEL, C BROGNIEZ, C LENOBLE, J TI FIRST RESULTS FROM FOAM-II - THE DISSIPATION OF THE 1993 ANTARCTIC OZONE HOLE SO GEOPHYSICAL RESEARCH LETTERS LA English DT Article AB POAM II is a space-borne instrument which uses solar occultation technique to measure the vertical distribution of ozone, aerosols and polar stratospheric clouds, and other properties of the stratosphere and mesosphere. FOAM II was launched aboard the SPOT 3 satellite in time to observe the dissipation of the 1993 Antarctic ozone hole. FOAM data indicates that the Antarctic ozone hole dissipates from the top downward. It also supports the hypothesis that the Antarctic vortex is an effective containment vessel. However the strength of the containment appears to decrease markedly at altitudes below 18 km C1 COMPUTAT PHYS INC,FAIRFAX,VA 22031. APPL RES CORP,LANDOVER,MD 20785. EMBRY RIDDLE AERONAUT UNIV,DEPT PHYS SCI,DAYTONA BEACH,FL 32114. UNIV COLORADO,LASP,BOULDER,CO 80309. CNRS,SERV AERON,F-91371 VERRIERES BUISSON,FRANCE. UNIV SCI & TECHNOL LILLE,LOA,F-59655 VILLENEUVE DASCQ,FRANCE. RP BEVILACQUA, RM (reprint author), USN,RES LAB,CODE 7227,WASHINGTON,DC 20375, USA. RI Fromm, Michael/F-4639-2010 NR 8 TC 17 Z9 17 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 APR 15 PY 1995 VL 22 IS 8 BP 909 EP 912 DI 10.1029/95GL00535 PG 4 WC Geosciences, Multidisciplinary SC Geology GA QT666 UT WOS:A1995QT66600011 ER PT J AU MCGONIGAL, M RUSSELL, JN PEHRSSON, PE MAGUIRE, HG BUTLER, JE AF MCGONIGAL, M RUSSELL, JN PEHRSSON, PE MAGUIRE, HG BUTLER, JE TI MULTIPLE INTERNAL-REFLECTION INFRARED-SPECTROSCOPY OF HYDROGEN ADSORBED ON DIAMOND(110) SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID CHEMICAL-VAPOR-DEPOSITION; GROWTH-MECHANISM; LOW-PRESSURE; FILMS; SURFACE; ELECTRON RP MCGONIGAL, M (reprint author), USN,RES LAB,DIV CHEM,CODE 6174,WASHINGTON,DC 20375, USA. RI Butler, James/B-7965-2008; Russell, John/A-3621-2009 OI Butler, James/0000-0002-4794-7176; NR 37 TC 25 Z9 25 U1 0 U2 2 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD APR 15 PY 1995 VL 77 IS 8 BP 4049 EP 4053 DI 10.1063/1.359487 PG 5 WC Physics, Applied SC Physics GA QU387 UT WOS:A1995QU38700070 ER PT J AU DVORAK, MD JUSTUS, BL BERRY, AD AF DVORAK, MD JUSTUS, BL BERRY, AD TI PUMP/PROBE Z-SCAN STUDIES OF GAAS NANOCRYSTALS GROWN IN POROUS-GLASS SO OPTICS COMMUNICATIONS LA English DT Note ID OPTICAL NONLINEARITY AB Time-resolved pump/probe Z-scan experiments using 1064 nm, 100 ps duration pulses were performed to determine the temporal characteristics of the optical nonlinearities of quantum confined GaAs nanocrystals doped in Vycor glass. The build-in and decay of the nonlinearities are instantaneous with respect to the excitation pulses. Single-beam Z-scan experiments were also used to measure the two-photon absorption coefficient, beta, and bound electronic nonlinear refractive index, gamma, of the quantum confined nanocrystals. The ratio gamma/beta is enhanced by a factor of approximately ten compared to bulk GaAs. C1 USN,RES LAB,DIV OPT SCI,WASHINGTON,DC 20375. USN,RES LAB,DIV CHEM,WASHINGTON,DC 20375. NR 17 TC 16 Z9 16 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 APR 15 PY 1995 VL 116 IS 1-3 BP 149 EP 152 DI 10.1016/0030-4018(95)00049-E PG 4 WC Optics SC Optics GA QT733 UT WOS:A1995QT73300025 ER PT J AU MOON, JA BATTLE, PR BASHKANSKY, M REINTJES, J AF MOON, JA BATTLE, PR BASHKANSKY, M REINTJES, J TI GENERATION OF HIGH-CONTRAST NARROW-BAND SUBPICOSECOND CORRELATIONS FROM BROAD-BAND STOCHASTIC FIELDS SO OPTICS LETTERS LA English DT Article ID PHASE; PULSE AB We demonstrate that two broadband stochastic fields generated by use of either parametric frequency conversion or stimulated Raman scattering can be mixed in a nonlinear crystal to produce an output spectrum with a pronounced narrow-band feature. This narrow-band feature, which we show is due to the phase-correlated nature of the beams, is present when the two broadband beams are delayed less than a coherence length relative to each other. We apply this technique to a novel measurement of the field cross-correlation function between two broadband stochastic fields with different center frequencies. RP USN, RES LAB, CODE 5603, WASHINGTON, DC 20375 USA. NR 14 TC 0 Z9 0 U1 0 U2 0 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA SN 0146-9592 EI 1539-4794 J9 OPT LETT JI Opt. Lett. PD APR 15 PY 1995 VL 20 IS 8 BP 831 EP 833 DI 10.1364/OL.20.000831 PG 3 WC Optics SC Optics GA QT452 UT WOS:A1995QT45200009 PM 19859344 ER PT J AU KLEIN, PB CROSSFIELD, MD FREITAS, JA COLLINS, AT AF KLEIN, PB CROSSFIELD, MD FREITAS, JA COLLINS, AT TI DONOR-ACCEPTOR PAIR RECOMBINATION IN SYNTHETIC TYPE-IIB SEMICONDUCTING DIAMOND SO PHYSICAL REVIEW B LA English DT Article ID CATHODOLUMINESCENCE; BORON; LUMINESCENCE C1 UNIV LONDON KINGS COLL,DEPT PHYS,LONDON WCR2R 2LS,ENGLAND. SACHS FREEMAN ASSOCIATES INC,LANDOVER,MD 20785. RP KLEIN, PB (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 22 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 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD APR 15 PY 1995 VL 51 IS 15 BP 9634 EP 9642 DI 10.1103/PhysRevB.51.9634 PG 9 WC Physics, Condensed Matter SC Physics GA QV237 UT WOS:A1995QV23700023 ER PT J AU YU, WY TWARDOWSKI, A FU, LP PETROU, A JONKER, BT AF YU, WY TWARDOWSKI, A FU, LP PETROU, A JONKER, BT TI MAGNETOANISOTROPY IN ZN1-XMNX SE STRAINED EPILAYERS SO PHYSICAL REVIEW B LA English DT Article ID QUANTUM-WELL STRUCTURES; MAGNETOOPTICAL ANISOTROPY; EXCITONS; MAGNETOREFLECTANCE; MAGNETIZATION C1 USN,RES LAB,WASHINGTON,DC 20375. RP YU, WY (reprint author), SUNY BUFFALO,DEPT PHYS,BUFFALO,NY 14260, USA. NR 23 TC 24 Z9 24 U1 2 U2 4 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD APR 15 PY 1995 VL 51 IS 15 BP 9722 EP 9727 DI 10.1103/PhysRevB.51.9722 PG 6 WC Physics, Condensed Matter SC Physics GA QV237 UT WOS:A1995QV23700035 ER PT J AU PIERSON, SW REINECKE, TL RUDIN, S AF PIERSON, SW REINECKE, TL RUDIN, S TI NEUTRAL-DONOR-BOUND COLLECTIVE EXCITATIONS IN THE BULK AND IN QUANTUM-WELLS SO PHYSICAL REVIEW B LA English DT Article ID ELECTRON-PHONON INTERACTION; POLAR SEMICONDUCTORS; IMPURITIES C1 USA,RES LAB,FT MONMOUTH,NJ 07703. RP PIERSON, SW (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 12 TC 3 Z9 3 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD APR 15 PY 1995 VL 51 IS 16 BP 10817 EP 10824 DI 10.1103/PhysRevB.51.10817 PG 8 WC Physics, Condensed Matter SC Physics GA QW284 UT WOS:A1995QW28400057 ER PT J AU PROKES, SM GLEMBOCKI, OJ AF PROKES, SM GLEMBOCKI, OJ TI ROLE OF INTERFACIAL OXIDE-RELATED DEFECTS IN THE RED-LIGHT EMISSION IN POROUS SILICON - REPLY SO PHYSICAL REVIEW B LA English DT Letter ID OPTICAL-PROPERTIES; LUMINESCENCE; PHOTOLUMINESCENCE; ABSORPTION; CENTERS; SPECTRA; WAFERS; RAMAN; GLASS; SI RP PROKES, SM (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 26 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 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD APR 15 PY 1995 VL 51 IS 16 BP 11183 EP 11186 DI 10.1103/PhysRevB.51.11183 PG 4 WC Physics, Condensed Matter SC Physics GA QW284 UT WOS:A1995QW28400117 ER PT J AU SCHOCH, KF BYERS, WA BUCKLEY, LJ AF SCHOCH, KF BYERS, WA BUCKLEY, LJ TI DEPOSITION AND CHARACTERIZATION OF CONDUCTING POLYMER THIN-FILMS ON INSULATING SUBSTRATES SO SYNTHETIC METALS LA English DT Article DE DEPOSITION; FILMS; INSULATING SUBSTRATES ID POLYANILINE; POLYPYRROLE AB Chemical polymerization of aniline and pyrrole in dilute aqueous solution was used to produce coatings having a conductivity as high as 0.72 and 0.073 S/cm for films having optical absorbance of 0.032 (800 nm) and 0.012 (1000 nm), respectively. Assessment of the stability of the conductivity for films having optical properties of the coatings during weathering, salt fog and humidity exposure showed that there was some loss in conductivity over an eight-day period, but no deterioration in optical transparency. Electron spectroscopy for chemical analysis was used to determine changes in surface composition and bonding during the environmental exposure tests. C1 USN,CTR AIR WARFARE,WARMINSTER,PA 19084. RP SCHOCH, KF (reprint author), WESTINGHOUSE SCI & TECHNOL CTR,PITTSBURGH,PA 15235, USA. NR 21 TC 33 Z9 33 U1 0 U2 2 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0379-6779 J9 SYNTHETIC MET JI Synth. Met. PD APR 15 PY 1995 VL 72 IS 1 BP 13 EP 23 DI 10.1016/0379-6779(94)02314-O PG 11 WC Materials Science, Multidisciplinary; Physics, Condensed Matter; Polymer Science SC Materials Science; Physics; Polymer Science GA QT998 UT WOS:A1995QT99800003 ER PT J AU BURKE, TR BARCHI, JJ GEORGE, C WOLF, G SHOELSON, SE YAN, XJ AF BURKE, TR BARCHI, JJ GEORGE, C WOLF, G SHOELSON, SE YAN, XJ TI CONFORMATIONALLY CONSTRAINED PHOSPHOTYROSYL MIMETICS DESIGNED AS MONOMERIC SRC HOMOLOGY-2 DOMAIN INHIBITORS SO JOURNAL OF MEDICINAL CHEMISTRY LA English DT Article ID TYROSINE-PHOSPHORYLATED PEPTIDES; SH2 DOMAIN; BINDING; RECOGNITION; P56(LCK); TARGETS; KINASE AB Inhibitors of specific src homology 2 (SH2) domain binding interactions could potentially afford new therapeutic approaches toward a variety of diseases, including several cancers. To date SH2 domain inhibitors have been confined to small phosphotyrosyl (pTyr)-containing peptides that appear to bind along the surface of SH2 domains with specific recognition features protruding into the protein. Among these protrusions is the pTyr residue itself, which is inserted into a well-formed binding pocket. In the present study monomeric pTyr mimetics were prepared having key aspects of their structure constrained to conformations of the bound pTyr residue observed in the previously reported X-ray structure of a pTyr-peptide bound to the Lck SH2 domain. The resulting constrained pTyr mimetics were examined for inhibitory potency ih six SH2 domain constructs: Lck, Src, Grb2, and the C-terminal SH2 domains of PLC gamma (PLC gamma-C) and the p85 subunit of PI-3 kinase (p85-C), as well as the N-terminal SH2 domain of SH PTP2. Although inhibition constants were in the millimolar range, it was observed that capping pTyr as its N-alpha-acetyl carboxamide [(L)-1] provided a roughly 2-3-fold increase in potency relative to free pTyr. Diastereomeric indanylglycine-based analogues (+/-)-3a,b were essentially inactive. Of note was methanobenzazocine (+/-)-2. While being racemic and a partial pTyr structure, this analogue retained full binding potency of the enantiomerically pure N-alpha-acetyl pTyr amide (L)-1. Modification and elaboration of 2 could potentially result in small molecule inhibitors having greater potency. C1 USN,RES LAB,STRUCT MATTER LAB,WASHINGTON,DC 20375. HARVARD UNIV,SCH MED,JOSLIN DIABET CTR,BOSTON,MA 02215. HARVARD UNIV,SCH MED,DEPT MED,BOSTON,MA 02215. RP BURKE, TR (reprint author), NCI,DIV CANC TREATMENT,DEV THERAPEUT PROGRAM,MED CHEM LAB,BLDG 37,ROOM 5C06,BETHESDA,MD 20892, USA. RI Barchi Jr., Joseph/N-3784-2014; Burke, Terrence/N-2601-2014 NR 47 TC 62 Z9 62 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0022-2623 J9 J MED CHEM JI J. Med. Chem. PD APR 14 PY 1995 VL 38 IS 8 BP 1386 EP 1396 DI 10.1021/jm00008a017 PG 11 WC Chemistry, Medicinal SC Pharmacology & Pharmacy GA QU380 UT WOS:A1995QU38000017 PM 7537333 ER PT J AU ALLEN, R ESTEROWITZ, L AF ALLEN, R ESTEROWITZ, L TI CW TUNABLE YTTERBIUM YAG LASER-PUMPED BY TITANIUM SAPPHIRE SO ELECTRONICS LETTERS LA English DT Article DE LASER TUNING; OPTICAL PUMPING; SOLID LASERS ID YB-YAG AB Room-temperature CW laser operation from Yb3+ in YAG is reported. The pump source is a 1 W titanium-sapphire laser tuned to 940nm. The ytterbium laser was tuned continuously from 1.016 to 1.095 mu m. Output power up to 400mW was measured with 1 W of pump power incident on the laser crystal. RP ALLEN, R (reprint author), USN,RES LAB,4555 OVERLOOK AVE SW,WASHINGTON,DC 20375, USA. NR 8 TC 9 Z9 9 U1 0 U2 3 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 APR 13 PY 1995 VL 31 IS 8 BP 639 EP 641 DI 10.1049/el:19950439 PG 3 WC Engineering, Electrical & Electronic SC Engineering GA QV922 UT WOS:A1995QV92200030 ER PT J AU WILLIAMS, RW CHEH, JL LOWREY, AH WEIR, AF AF WILLIAMS, RW CHEH, JL LOWREY, AH WEIR, AF TI EFFECTS OF HYDRATION ON SCALE FACTORS FOR AB-INITIO FORCE-CONSTANTS .9. METHANOL SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article ID ALA-X PEPTIDES; N-METHYLACETAMIDE; ABINITIO; FREQUENCIES; SPECTRA; TRANS AB Scaled quantum mechanical force fields (SQMFFs) have been calculated for both isolated methanol and water-solvated methanol using both self-consistent reaction field (SCRF) calculations and supermolecule calculations performed on methanol hydrogen bonded to one, two, three, and four water molecules. Results obtained at the Hartree-Fock (HF) 4-31G, MP2 (second-order Moller-Plesset) 6-311G**, and density functional theory (DFT) (4,4;4,4) (7111/411/1*) levels are compared. A typical average standard deviation between measured and calculated frequencies for four isotopomers of methanol in both isolated and solvated states, and for all force fields, is 12 cm(-1). (The term ''isotopomer'' is used here to refer to isotopic species of a molecule that differ only by one or more isotopic atoms.) Excluding CH stretching frequencies, a typical average standard deviation is 7 cm(-1). Water solvation most strongly affects the CO stretching and OH bending frequencies, shifting the CO stretch down by 15 wavenumbers and the OH bend up by 70 wavenumbers. The SCRF calculations appear to correctly model the effect of solvation on the CO stretch, but not on the OH bend. The supermolecule calculations appear to correctly model the effect of solvation on the OH bend, but not on the CO stretch. Supermolecule normal mode calculations show artifacts due to vibrational coupling with water molecules in hydrogen-bonded rings. We remove these artifacts by deleting the Cartesian force constants and coordinates for water molecule atoms prior to transformation into internal symmetry coordinates. This change preserves the effect of solvation on electronic structure. Scale factors from the DFT calculations are closer to unity. The scaled force constants from both the MP2 and the DFT calculations are quite similar to those obtained at the lower HF level, indicating that scaling can fully compensate for errors in force constants obtained at the Hartree-Fock level. C1 USN,RES LAB,STRUCT MATTER LAB,WASHINGTON,DC 20375. RP WILLIAMS, RW (reprint author), UNIFORMED SERV UNIV HLTH SCI,DEPT BIOCHEM,4301 JONES BRIDGE RD,BETHESDA,MD 20814, USA. NR 22 TC 22 Z9 22 U1 0 U2 3 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 APR 13 PY 1995 VL 99 IS 15 BP 5299 EP 5307 DI 10.1021/j100015a011 PG 9 WC Chemistry, Physical SC Chemistry GA QT465 UT WOS:A1995QT46500011 ER PT J AU DANZL, DF POZOS, RS AF DANZL, DF POZOS, RS TI ACCIDENTAL HYPOTHERMIA - REPLY SO NEW ENGLAND JOURNAL OF MEDICINE LA English DT Letter C1 USN,HLTH RES CTR,SAN DIEGO,CA 92186. RP DANZL, DF (reprint author), UNIV LOUISVILLE,LOUISVILLE,KY 40292, USA. NR 5 TC 0 Z9 0 U1 1 U2 2 PU MASS MEDICAL SOC PI BOSTON PA 10 SHATTUCK, BOSTON, MA 02115 SN 0028-4793 J9 NEW ENGL J MED JI N. Engl. J. Med. PD APR 13 PY 1995 VL 332 IS 15 BP 1035 EP 1035 PG 1 WC Medicine, General & Internal SC General & Internal Medicine GA QT737 UT WOS:A1995QT73700025 ER PT J AU TANG, CM GOLDSTEIN, M SWYDEN, TA WALSH, JE AF TANG, CM GOLDSTEIN, M SWYDEN, TA WALSH, JE TI FREE-ELECTRON MICRO-LASERS SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT 16th International Free Electron Laser Conference CY AUG 22-26, 1994 CL STANFORD, CA SP W W HANSEN EXPTL PHYS LAB, STANFORD PICOSECOND FREE ELECTRON LASER CTR ID FIELD-EMISSION; SIMULATION AB The electron optical properties of microscopic gated field emitter arrays (FEA) are an ideal match to the electron beam requirements of free electron micro-lasers. Projected performance characteristics of the beam generators based on the FEA principle are reviewed and results from recent experiments with a single micro-beam filament are summarized. The latter are shown to support the claim that free electron micro-lasers based on either the Cherenkov or the Smith-Purcell interaction mechanism are a practical possibility. C1 USN,RES LAB,DIV PLASMA PHYS,WASHINGTON,DC 20375. DARTMOUTH COLL,HANOVER,NH 03755. FM TECHNOL INC,FAIRFAX,VA 22032. NR 23 TC 17 Z9 17 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD APR 11 PY 1995 VL 358 IS 1-3 BP 7 EP 10 DI 10.1016/0168-9002(94)01549-X PG 4 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA QR443 UT WOS:A1995QR44300004 ER PT J AU WINTER, GH HALL, J WONG, RK COLSON, WB AF WINTER, GH HALL, J WONG, RK COLSON, WB TI SIMULATIONS OF A KLYSTRON UNDULATOR FOR THE SLAC X-RAY FEL SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT 16th International Free Electron Laser Conference CY AUG 22-26, 1994 CL STANFORD, CA SP W W HANSEN EXPTL PHYS LAB, STANFORD PICOSECOND FREE ELECTRON LASER CTR AB The Stanford Linear Accelerator Center (SLAG) linac has been proposed as an electron beam source for a high power X-ray FEL. A klystron design with an enclosed dispersive section allows a shorter undulator to achieve bunching in a weak radiation field. Single-mode phase-space simulations are used to investigate the effectiveness of electron bunching and the onset of saturation. A longitudinal multimode simulation shows the resulting coherence development. RP WINTER, GH (reprint author), USN,POSTGRAD SCH,DEPT PHYS,MONTEREY,CA 93943, USA. NR 3 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD APR 11 PY 1995 VL 358 IS 1-3 BP 68 EP 69 DI 10.1016/0168-9002(94)01291-1 PG 2 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA QR443 UT WOS:A1995QR44300020 ER PT J AU PERSHING, DE SEELEY, RD JACKSON, RH FREUND, HP AF PERSHING, DE SEELEY, RD JACKSON, RH FREUND, HP TI AMPLIFIER PERFORMANCE OF THE NRL UBITRON SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT 16th International Free Electron Laser Conference CY AUG 22-26, 1994 CL STANFORD, CA SP W W HANSEN EXPTL PHYS LAB, STANFORD PICOSECOND FREE ELECTRON LASER CTR ID ELECTRON AB Operation of the Naval Research Laboratory K-u-band ubitron has successfully demonstrated a high power/efficiency and broad bandwidth. This device employs a helical wiggler/axial guide field configuration. Performance levels achieved at 16.6 GHz can be summarized as a peak power of 4.2 MW for an efficiency of 17.5% and a gain of 29 dB, and an instantaneous bandwidth of 22%. Substantial beam loss was observed. The specific loss rate was correlated with output power, and reached a level of 50% beam loss at the 4.2 MW level. Nonlinear simulations of the experiment are in good agreement with these observations. C1 MISSION RES CORP,NEWINGTON,VA 22122. SCI APPLICAT INT CORP,MCLEAN,VA 22102. RP PERSHING, DE (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 4 TC 20 Z9 20 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD APR 11 PY 1995 VL 358 IS 1-3 BP 104 EP 107 DI 10.1016/0168-9002(94)01581-3 PG 4 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA QR443 UT WOS:A1995QR44300031 ER PT J AU HIRSHFIELD, JL MARSHALL, TC ZHANG, TB GANGULY, AK SPRANGLE, PA AF HIRSHFIELD, JL MARSHALL, TC ZHANG, TB GANGULY, AK SPRANGLE, PA TI A MICROWAVE INVERSE FREE-ELECTRON-LASER ACCELERATOR (MIFELA) SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT 16th International Free Electron Laser Conference CY AUG 22-26, 1994 CL STANFORD, CA SP W W HANSEN EXPTL PHYS LAB, STANFORD PICOSECOND FREE ELECTRON LASER CTR C1 OMEGA P INC,NEW HAVEN,CT 06520. YALE UNIV,DEPT PHYS,NEW HAVEN,CT 06520. COLUMBIA UNIV,DEPT APPL PHYS,NEW YORK,NY 10027. USN,RES LAB,DIV PHYS,WASHINGTON,DC 20375. NR 5 TC 5 Z9 5 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD APR 11 PY 1995 VL 358 IS 1-3 BP 129 EP 130 DI 10.1016/0168-9002(94)01293-8 PG 2 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA QR443 UT WOS:A1995QR44300038 ER PT J AU FREUND, HP READ, ME JACKSON, RH PERSHING, DE TACCETTI, JM AF FREUND, HP READ, ME JACKSON, RH PERSHING, DE TACCETTI, JM TI DESIGN STUDY OF A G-BAND FEL AMPLIFIER FOR APPLICATION TO CYCLOTRON RESONANT HEATING IN MAGNETIC FUSION-REACTORS SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT 16th International Free Electron Laser Conference CY AUG 22-26, 1994 CL STANFORD, CA SP W W HANSEN EXPTL PHYS LAB, STANFORD PICOSECOND FREE ELECTRON LASER CTR AB A G-band (140-150 GHz) free-electron laser is described using a coaxial hybrid iron (CHI) wiggler. The CHI wiggler is produced by insertion into a solenoid of a central rod and an outer ring composed of alternating ferrite and nonferrite spacers. The position of the spacers is such that the ferrite (nonferrite) spacers on the central rod are opposite the nonferrite (ferrite) spacers on the outer ring. The field is cylindrically symmetric and exhibits minima in the center of the gap providing for enhanced beam focusing. We describe a tapered wiggler amplifier for plasma heating applications. Preliminary design studies using a nonlinear simulation indicates that output powers of 3.5 MW are possible using a 690 kV/40 A electron beam for a total efficiency of 13%. It is important to note that no beam loss was observed even for realistic values of beam energy spread. C1 USN,RES LAB,WASHINGTON,DC 20375. RP FREUND, HP (reprint author), PHYS SCI INC,ALEXANDRIA,VA 22314, USA. NR 8 TC 4 Z9 4 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD APR 11 PY 1995 VL 358 IS 1-3 BP 163 EP 166 DI 10.1016/0168-9002(94)01561-9 PG 4 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA QR443 UT WOS:A1995QR44300047 ER PT J AU BLAU, J WONG, RK COLSON, WB AF BLAU, J WONG, RK COLSON, WB TI ULTRA-SHORT PULSE FREE-ELECTRON LASER-OSCILLATORS SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT 16th International Free Electron Laser Conference CY AUG 22-26, 1994 CL STANFORD, CA SP W W HANSEN EXPTL PHYS LAB, STANFORD PICOSECOND FREE ELECTRON LASER CTR ID FELIX AB An RF linear accelerator can produce ultra-short electron pulses on the order of a picosecond. In a long wavelength FEL, the pulse length can be much less than the slippage distance. Simulations show the effects of such short pulses on weak-field gain, saturated power, and optical pulse structure. RP BLAU, J (reprint author), USN,POSTGRAD SCH,DEPT PHYS,MONTEREY,CA 93943, USA. NR 7 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD APR 11 PY 1995 VL 358 IS 1-3 BP 441 EP 443 DI 10.1016/0168-9002(94)01270-9 PG 3 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA QR443 UT WOS:A1995QR44300118 ER PT J AU FREUND, HP AF FREUND, HP TI A REEXAMINATION OF SCALING LAWS IN THE TRAVELING-WAVE INTERACTION SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT 16th International Free Electron Laser Conference CY AUG 22-26, 1994 CL STANFORD, CA SP W W HANSEN EXPTL PHYS LAB, STANFORD PICOSECOND FREE ELECTRON LASER CTR ID FREE-ELECTRON-LASER; GAIN; MICROWAVE; REGIME AB A re-examination of traveling wave interactions (in the helix traveling wave tube and the free-electron laser) is performed to investigate the validity of the well-known scaling laws in which the gain varies as the cube (fourth) root of the current when space-charge effects are negligible (dominant). The results indicate that these scaling laws are simplistic generalizations which break down for broad bandwidth interactions, and that the actual variation of the gain with the current can be more complex. RP FREUND, HP (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 18 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD APR 11 PY 1995 VL 358 IS 1-3 BP 497 EP 500 DI 10.1016/0168-9002(94)01504-X PG 4 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA QR443 UT WOS:A1995QR44300134 ER PT J AU COLSON, WB AF COLSON, WB TI STATUS OF FREE-ELECTRON LASERS IN 1994 SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT 16th International Free Electron Laser Conference CY AUG 22-26, 1994 CL STANFORD, CA SP W W HANSEN EXPTL PHYS LAB, STANFORD PICOSECOND FREE ELECTRON LASER CTR ID STIMULATED EMISSION; MAGNETIC-FIELD AB Eighteen years after the first operation of the short wavelength free electron laser (FEL) at Stanford University, there have been many significant accomplishments. FEL research in the infrared, visible, ultraviolet, and X-ray wavelength regimes is discussed. RP USN, POSTGRAD SCH, DEPT PHYS, MONTEREY, CA 93943 USA. NR 6 TC 1 Z9 1 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 EI 1872-9576 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD APR 11 PY 1995 VL 358 IS 1-3 BP 532 EP 535 DI 10.1016/0168-9002(94)01547-3 PG 4 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA QR443 UT WOS:A1995QR44300143 ER PT J AU FREUND, HP GRANATSTEIN, VL AF FREUND, HP GRANATSTEIN, VL TI LONG-WAVELENGTH FREE-ELECTRON LASERS IN 1994 SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT 16th International Free Electron Laser Conference CY AUG 22-26, 1994 CL STANFORD, CA SP W W HANSEN EXPTL PHYS LAB, STANFORD PICOSECOND FREE ELECTRON LASER CTR ID OPERATION AB A short summary of the current status and most important future directions for long wavelength free-electron lasers is presented. For the purposes of the discussion, long wavelength refers to wavelengths longer than 0.5 mm. The distinction between long and short wavelengths is not entirely arbitrary since different physical processes may be important. For example, higher current beams are typically employed at long wavelengths and space-charge effects may be important. Indeed, the dominant interaction mechanism is often coherent Raman rather than coherent Compton scattering. In addition, dispersion due to the beam dielectric effects and finite transverse dimensions in the drift tubes and cavities are important effects at longer wavelengths. The ultimate goals of long wavelength FEL research are to achieve much higher average powers with good overall efficiency in a compact design, and the highest average power produced in an FEL to date (36 W) has been recorded in the Ku-band. At the present time, electrostatic accelerators and long pulse modulators appear to be the prime candidates for drivers for these systems; however, advances in induction linac technology which lead to higher repetition rates and improved beam quality could alter this conclusion. C1 UNIV MARYLAND,COLLEGE PK,MD 20742. SCI APPLICAT INT CORP,MCLEAN,VA 22102. RP FREUND, HP (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 31 TC 7 Z9 7 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD APR 11 PY 1995 VL 358 IS 1-3 BP 551 EP 554 DI 10.1016/0168-9002(94)01601-1 PG 4 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA QR443 UT WOS:A1995QR44300193 ER PT J AU COLSON, WB AF COLSON, WB TI SHORT-WAVELENGTH FREE-ELECTRON LASERS IN 1994 SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT 16th International Free Electron Laser Conference CY AUG 22-26, 1994 CL STANFORD, CA SP W W HANSEN EXPTL PHYS LAB, STANFORD PICOSECOND FREE ELECTRON LASER CTR ID IR FEL PROJECT; STORAGE-RING; INSTITUTE; DESIGN; LINAC RP COLSON, WB (reprint author), USN,POSTGRAD SCH,DEPT PHYS,MONTEREY,CA 93943, USA. NR 49 TC 3 Z9 3 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD APR 11 PY 1995 VL 358 IS 1-3 BP 555 EP 557 DI 10.1016/0168-9002(94)01602-X PG 3 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA QR443 UT WOS:A1995QR44300194 ER PT J AU GRANATSTEIN, VL FLIFLET, AW MANHEIMER, WM GOVER, A AF GRANATSTEIN, VL FLIFLET, AW MANHEIMER, WM GOVER, A TI DESIGN OF A FAR-INFRARED FEL WITH AN ELECTROMAGNETIC WIGGLER SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article C1 USN,RES LAB,DIV PLASMA PHYS,WASHINGTON,DC 20375. TEL AVIV UNIV,FAC ENGN,IL-69978 TEL AVIV,ISRAEL. RP GRANATSTEIN, VL (reprint author), UNIV MARYLAND,INST PLASMA RES,COLLEGE PK,MD 20742, USA. NR 4 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD APR 11 PY 1995 VL 358 IS 1-3 BP ABS24 EP ABS25 PG 2 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA QR443 UT WOS:A1995QR44300158 ER PT J AU KELSEY, E BLAU, J QUICK, DD WONG, RK COLSON, WB AF KELSEY, E BLAU, J QUICK, DD WONG, RK COLSON, WB TI THE EFFECTS OF HIGH-GAIN IN AN FEL, OPTICAL KLYSTRON SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article C1 USN,POSTGRAD SCH,DEPT PHYS,MONTEREY,CA 93943. NR 6 TC 1 Z9 1 U1 1 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD APR 11 PY 1995 VL 358 IS 1-3 BP ABS61 EP ABS62 PG 2 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA QR443 UT WOS:A1995QR44300176 ER PT J AU LYON, RA COLSON, WB AF LYON, RA COLSON, WB TI POWER REQUIREMENTS FOR HIGH-AVERAGE POWER FELS SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article RP LYON, RA (reprint author), USN,POSTGRAD SCH,DEPT PHYS,MONTEREY,CA 93943, USA. NR 5 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD APR 11 PY 1995 VL 358 IS 1-3 BP ABS81 EP ABS82 PG 2 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA QR443 UT WOS:A1995QR44300186 ER PT J AU SMALL, DW WONG, RK BLAU, J COLSON, WB AF SMALL, DW WONG, RK BLAU, J COLSON, WB TI SIMULATIONS OF THE STANFORD FIREFLY 1-KW FREE-ELECTRON LASER SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article RP SMALL, DW (reprint author), USN,POSTGRAD SCH,DEPT PHYS,MONTEREY,CA 93943, USA. NR 2 TC 0 Z9 0 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD APR 11 PY 1995 VL 358 IS 1-3 BP ABS44 EP ABS45 PG 2 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA QR443 UT WOS:A1995QR44300168 ER PT J AU WONG, RK COLSON, WB AF WONG, RK COLSON, WB TI FREQUENCY-RESPONSE TO AN ELECTRON-ENERGY SHIFT SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article RP WONG, RK (reprint author), USN,POSTGRAD SCH,DEPT PHYS,MONTEREY,CA 93943, USA. NR 5 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD APR 11 PY 1995 VL 358 IS 1-3 BP ABS26 EP ABS27 PG 2 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA QR443 UT WOS:A1995QR44300159 ER PT J AU RODE, DL GASKILL, DK AF RODE, DL GASKILL, DK TI ELECTRON HALL-MOBILITY OF N-GAN SO APPLIED PHYSICS LETTERS LA English DT Article C1 USN,RES LAB,ADV MAT SYNTH LAB,WASHINGTON,DC 20375. RP RODE, DL (reprint author), WASHINGTON UNIV,DEPT ELECT ENGN,ST LOUIS,MO 63130, USA. NR 6 TC 75 Z9 75 U1 1 U2 7 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD APR 10 PY 1995 VL 66 IS 15 BP 1972 EP 1973 DI 10.1063/1.113294 PG 2 WC Physics, Applied SC Physics GA QR189 UT WOS:A1995QR18900039 ER PT J AU SMITH, DM LEVENTHAL, M GEHRELS, N TUELLER, J JOHNSON, WN KINZER, RL KURFESS, JD STRICKMAN, MS GRABELSKY, DA PURCELL, WR ULMER, MP JUNG, GV AF SMITH, DM LEVENTHAL, M GEHRELS, N TUELLER, J JOHNSON, WN KINZER, RL KURFESS, JD STRICKMAN, MS GRABELSKY, DA PURCELL, WR ULMER, MP JUNG, GV TI SEARCH FOR COMPTON-BACKSCATTERED ANNIHILATION RADIATION FROM THE GALACTIC-CENTER WITH THE OSSE SO ASTROPHYSICAL JOURNAL LA English DT Article DE GALAXY, CENTER; GAMMA-RAYS, OBSERVATIONS ID MOLECULAR CLOUD; LINE EMISSION; CENTER REGION; 1E1740.7-2942; TRANSIENT; NOVA AB An emission feature near 170 keV, interpreted as Compton-backscattered 511 keV positron-annihilation radiation, has been reported twice by balloon-borne germanium spectrometers from within similar to 15 degrees of the Galactic center (Leventhal, MacCallum, and Stang 1978; Smith et al. 1993). Upper limits on this feature set by HEAO 3 (Mahoney, Ling, and Wheaten 1993) and other instruments indicate that it must be transient. We have searched data from the Oriented Scintillation Spectrometer Experiment (OSSE) on the Compton Gamma Ray Observatory (CGRO) for this feature, using daily spectral accumulations from all pointings near the Galactic center up to 1993 August, and covering most of the region viewed by the balloon instruments. We find no evidence for backscatter emission. Under the hypothesis that the source is 1E 1740.7-2942, the OSSE data set (186 days) disagrees with the balloon measurements with 99.3% confidence. The average daily 3 sigma OSSE upper limit on backscatter flux from 1E 1740.7-2942 is 6.8 10(-4) photons cm(-2) s(-1), compared to the 1.3 x 10(-3) photons cm(-2) reported by the balloon observations. We also saw no evidence in 186 days for linelike emission from the point source EXS 1737.9-2952 recently discovered by Grindlay, Covault, and Manandhar (1993). This source exhibited bright emission from 83-111 keV, which has been interpreted as doubly backscattered 511 keV radiation. The average daily 3 sigma upper limit from OSSE for this line is 9.8 x 10(-4) photons cm(-2) s(-1), or similar to 8% of the reported flux. C1 NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. USN,RES LAB,EO HULBURT CTR SPACE RES,WASHINGTON,DC 20375. NORTHWESTERN UNIV,EVANSTON,IL 60208. UNIV SPACE RES ASSOC,WASHINGTON,DC 20024. RP SMITH, DM (reprint author), UNIV MARYLAND,DEPT ASTRON,COLLEGE PK,MD 20742, USA. RI Gehrels, Neil/D-2971-2012; Tueller, Jack/D-5334-2012; Johnson, Neil/G-3309-2014 NR 21 TC 3 Z9 3 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 APR 10 PY 1995 VL 443 IS 1 BP 117 EP 123 DI 10.1086/175507 PN 1 PG 7 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QQ879 UT WOS:A1995QQ87900012 ER PT J AU DRAKE, JJ LAMING, JM WIDING, KG AF DRAKE, JJ LAMING, JM WIDING, KG TI STELLAR CORONAL ABUNDANCES .2. THE FIRST IONIZATION-POTENTIAL EFFECT AND ITS ABSENCE IN THE CORONA OF PROCYON SO ASTROPHYSICAL JOURNAL LA English DT Review DE STARS, CORONAE; STARS, INDIVIDUAL (ALPHA CANIS MINORIS); ULTRAVIOLET, STARS ID MAIN-SEQUENCE STARS; EXTREME-ULTRAVIOLET SPECTRUM; SOLAR TRANSITION REGION; X-RAY-EMISSION; OSCILLATOR-STRENGTHS; MAGNETIC-FIELDS; ATOMIC DATA; F-STARS; CHROMOSPHERIC ACTIVITY; ELEMENTAL ABUNDANCES AB We present a detailed study of element abundances in the corona of Procyon based on spectroscopic observations obtained with the Extreme Ultraviolet Explorer Satellite (EUVE). Emission measures (EMs) have been derived from observed line fluxes for the elements O, Ne, Mg, Si, S, Ar, Fe, and Ni, using the most recent atomic data. The slope of the resulting EM distribution is very similar to the well-known result of 1.5 (EM proportional to T-3/2) found for the solar corona for log T = 5.3-6.0. The abundances in the corona of Procyon are found to be consistent with their photospheric values. No enhancement of species with low first ionization potentials (FIPs) is observed, such as is the case for the solar corona: the ''FIP effect'' appears to be absent in Procyon. We speculate that the dominant emission from the corona and transition region in Procyon could originate in low-altitude structures analogous to the solar supergranulation network, which does not appear to exhibit an FIP effect. A considerable body of observational evidence suggests both that Procyon is a ''basal'' star in terms of its chromospheric activity and that it is on the spectral type boundary which separates stars which exhibit activity levels correlated with rotation and those which do not. Such stars are thought by some workers to sustain coronae which are heated predominantly by acoustic means. We also note that an acoustically heated outer atmosphere might not possess sufficiently small structures to support a fractionation of elements with respect to FIP. Our results demonstrate that the FIP effect is not an ubiquitous feature of late-type stellar coronae. Consequently, speculations in the literature that the FIP effect observed in cosmic rays is a result of their originating from seed particles injected by late-type stellar coronae must await observational confirmation that the FIP effect does indeed operate on M dwarfs, which are likely to be the dominant particle injection source. C1 SFA INC, WASHINGTON, DC 20375 USA. USN, RES LAB, EO HULBURT CTR SPACE RES, WASHINGTON, DC 20375 USA. RP DRAKE, JJ (reprint author), UNIV CALIF BERKELEY, CTR EUV ASTROPHYS, 2150 KITTREDGE ST, BERKELEY, CA 94720 USA. NR 156 TC 117 Z9 117 U1 0 U2 0 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 APR 10 PY 1995 VL 443 IS 1 BP 393 EP 415 DI 10.1086/175533 PN 1 PG 23 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QQ879 UT WOS:A1995QQ87900038 ER PT J AU LAMING, JM DRAKE, JJ WIDING, KG AF LAMING, JM DRAKE, JJ WIDING, KG TI STELLAR CORONAL ABUNDANCES .3. THE SOLAR FIRST IONIZATION-POTENTIAL EFFECT DETERMINED FROM FULL-DISK OBSERVATION SO ASTROPHYSICAL JOURNAL LA English DT Article DE ATOMIC PROCESSES; SUN, CORONA; SUN, UV RADIATION ID ELEMENTAL ABUNDANCES; FE-XIV; OSCILLATOR-STRENGTHS; LINE EMISSION; BURST MODEL; TRANSITION-PROBABILITIES; COLLISION STRENGTHS; LEVEL POPULATIONS; PROTON EXCITATION; ULTRAVIOLET LINES AB In this paper we reanalyze the full-disk quiet-sun spectrum of Malinovsky and Heroux (1973) with modern atomic data. The purposes of this are to check our atomic data and methods in other investigations using data from nearby stars obtained with the NASA Extreme Ultraviolet Explorer satellite, and to confirm that the solar FIP effect investigated by previous authors studying discrete solar regions is the same as that found in full-disk spectra. We recover the usual solar FIP effect of a coronal abundance enhancement of elements with a low first ionization potential (FIP) of a factor similar to 3-4 for lines formed at temperatures greater than similar to 10(6) K. For lower temperatures, the FIP effect seems to be substantially smaller, in qualitative agreement with other data. Comparing our fill-disk result with those from discrete solar structures suggest that the FIP effect is a function of altitude, with the lower temperature full-disk emission being dominated by the super-granulation network. We also compare the recent Fe ionization balance of Arnaud and Raymond (1992) with that of Arnaud and Rothenflug (1985). C1 USN,RES LAB,EO HULBURT CTR SPACE RES,WASHINGTON,DC 20375. UNIV CALIF BERKELEY,CTR EUV ASTROPHYS,BERKELEY,CA 94720. RP LAMING, JM (reprint author), SFA INC,LANDOVER,MD 20785, USA. NR 69 TC 72 Z9 72 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 APR 10 PY 1995 VL 443 IS 1 BP 416 EP 422 DI 10.1086/175534 PN 1 PG 7 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QQ879 UT WOS:A1995QQ87900039 ER PT J AU MCGRATH, KJ NGAI, KL ROLAND, CM AF MCGRATH, KJ NGAI, KL ROLAND, CM TI A COMPARISON OF SEGMENTAL DYNAMICS IN POLYMERS BY SOLID-STATE C-13 NMR-SPECTROSCOPY SO MACROMOLECULES LA English DT Article ID VISCOELASTIC PROPERTIES; TEMPERATURE-DEPENDENCE; AMORPHOUS POLYMERS; GLASS-TRANSITION; CHAIN DYNAMICS; RELAXATION; BEHAVIOR AB The temperature dependences of the line widths observed in solid-state C-13 NMR spectra for several polymers are shown to correlate with the time and temperature dependences of the segmental dispersions in their dielectric relaxation spectra. The NMR line width variations arise from molecular motions which modulate the H-1-C-13 dipolar interaction and the chemical shift anisotropy (CSA), thus interfering with the proton decoupling of the dipolar interaction and the magic angle spinning modulation of the CSA. These same motions govern the local segmental dynamics, and hence there is a direct connection between the results from macroscopic probes of polymer relaxation such as dielectric spectroscopy and microscopy measurements like NMR. The polymers studied herein exhibit a range of segmental relaxation properties, ranging from narrow relaxation functions with weak temperature dependences to very broad relaxation spectra whose mean relaxation times change markedly with temperature. In the C-13 NMR experiments these behaviors correspond to line broadening over very wide or narrow temperature ranges, respectively Our analysis demonstrates the manner in which solid-state NMR spectroscopy can provide information on the segmental dynamics of polymers, interpretable in the framework of relaxation models. RP MCGRATH, KJ (reprint author), USN, RES LAB, CODE 6120, WASHINGTON, DC 20375 USA. NR 30 TC 17 Z9 18 U1 0 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0024-9297 J9 MACROMOLECULES JI Macromolecules PD APR 10 PY 1995 VL 28 IS 8 BP 2825 EP 2830 DI 10.1021/ma00112a030 PG 6 WC Polymer Science SC Polymer Science GA QT946 UT WOS:A1995QT94600030 ER PT J AU MCGRATH, KJ ROLAND, CM AF MCGRATH, KJ ROLAND, CM TI C-13 NMR-STUDY OF COMPONENT DYNAMICS IN AROCLOR/POLY(VINYLETHYLENE) MIXTURES SO MACROMOLECULES LA English DT Note ID NUCLEAR-MAGNETIC-RESONANCE; FLOW BIREFRINGENCE PROPERTIES; SOLVENT DYNAMICS; SEGMENTAL RELAXATION; FREE-VOLUME; POLYMER-SOLUTIONS; AROCLOR SOLUTIONS; GLASS-TRANSITION; BLENDS; POLYSTYRENE RP MCGRATH, KJ (reprint author), USN,RES LAB,DIV CHEM,CODE 6120,WASHINGTON,DC 20375, USA. NR 46 TC 8 Z9 8 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0024-9297 J9 MACROMOLECULES JI Macromolecules PD APR 10 PY 1995 VL 28 IS 8 BP 2982 EP 2984 DI 10.1021/ma00112a052 PG 3 WC Polymer Science SC Polymer Science GA QT946 UT WOS:A1995QT94600052 ER PT J AU JACKSON, EM WEAVER, BD SUMMERS, GP SHAPIRO, P BURKE, EA AF JACKSON, EM WEAVER, BD SUMMERS, GP SHAPIRO, P BURKE, EA TI RADIATION-INDUCED T-C REDUCTION AND PAIR-BREAKING IN HIGH-T-C SUPERCONDUCTORS SO PHYSICAL REVIEW LETTERS LA English DT Article ID ELECTRON-IRRADIATION; ATOMIC DISORDER; YBA2CU3O7-DELTA; TEMPERATURE C1 USN,RES LAB,WASHINGTON,DC 20375. UNIV MARYLAND,BALTIMORE,MD 21228. RP JACKSON, EM (reprint author), SFA INC,LANDOVER,MD 20875, USA. NR 20 TC 43 Z9 44 U1 0 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 APR 10 PY 1995 VL 74 IS 15 BP 3033 EP 3036 DI 10.1103/PhysRevLett.74.3033 PG 4 WC Physics, Multidisciplinary SC Physics GA QR453 UT WOS:A1995QR45300046 ER PT J AU YU, HY SANDAY, SC RATH, BB CHANG, CI AF YU, HY SANDAY, SC RATH, BB CHANG, CI TI ELASTIC FIELDS DUE TO DEFECTS IN TRANSVERSELY ISOTROPIC BIMATERIALS SO PROCEEDINGS OF THE ROYAL SOCIETY-MATHEMATICAL AND PHYSICAL SCIENCES LA English DT Article ID DISLOCATIONS; INCLUSION AB A method for obtaining the analytic solution of the elastic fields due to defects such as inclusions, dislocations, disclinations, and point defects in transversely isotropic bimaterials is presented. The bimaterial consists of two semi-infinite transversely isotropic solids either perfectly bonded together or in frictionless contact with each other at a planar interface which is parallel to the plane of isotropy of both solids. The elastic solution is expressed in terms of the hexagonal stress vectors for the double force and the double force with moment. Closed form solutions for inclusions with pure dilatational eigenstrain, straight dislocation and disclination lines, circular dislocation loops, and point defects are presented. C1 USAF, OFF SCI RES, WASHINGTON, DC 20332 USA. RP YU, HY (reprint author), USN, RES LAB, WASHINGTON, DC 20375 USA. NR 60 TC 18 Z9 18 U1 2 U2 5 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 APR 8 PY 1995 VL 449 IS 1935 BP 1 EP 30 DI 10.1098/rspa.1995.0029 PG 30 GA QU762 UT WOS:A1995QU76200001 ER PT J AU SNOW, ES JUAN, WH PANG, SW CAMPBELL, PM AF SNOW, ES JUAN, WH PANG, SW CAMPBELL, PM TI SI NANOSTRUCTURES FABRICATED BY ANODIC-OXIDATION WITH AN ATOMIC-FORCE MICROSCOPE AND ETCHING WITH AN ELECTRON-CYCLOTRON-RESONANCE SOURCE SO APPLIED PHYSICS LETTERS LA English DT Article ID SCANNING TUNNELING MICROSCOPE; SILICON C1 UNIV MICHIGAN,DEPT ELECT ENGN & COMP SCI,SOLID STATE ELECTR LAB,ANN ARBOR,MI 48109. RP SNOW, ES (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. RI Pang, Stella/A-7770-2012 OI Pang, Stella/0000-0002-4330-0877 NR 13 TC 70 Z9 71 U1 0 U2 4 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD APR 3 PY 1995 VL 66 IS 14 BP 1729 EP 1731 DI 10.1063/1.113348 PG 3 WC Physics, Applied SC Physics GA QQ377 UT WOS:A1995QQ37700006 ER PT J AU MEHLMAN, G CHRISEY, DB HORWITZ, JS AF MEHLMAN, G CHRISEY, DB HORWITZ, JS TI EARLY DYNAMICS OF LASER-ABLATED YBA2CU3O7 PLASMAS FROM THEIR VACUUM-ULTRAVIOLET RADIATION TIME HISTORY SO APPLIED PHYSICS LETTERS LA English DT Article ID GENERATED PLASMAS C1 USN,RES LAB,WASHINGTON,DC 20375. RP MEHLMAN, G (reprint author), SFA INC,LANDOVER,MD 20785, USA. NR 8 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 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD APR 3 PY 1995 VL 66 IS 14 BP 1848 EP 1850 DI 10.1063/1.113342 PG 3 WC Physics, Applied SC Physics GA QQ377 UT WOS:A1995QQ37700046 ER PT J AU SINKOVITS, RS SEN, S AF SINKOVITS, RS SEN, S TI NONLINEAR DYNAMICS IN GRANULAR COLUMNS SO PHYSICAL REVIEW LETTERS LA English DT Article ID SOUND C1 SUNY BUFFALO,DEPT PHYS,BUFFALO,NY 14260. RP SINKOVITS, RS (reprint author), USN,RES LAB,CODE 6410,WASHINGTON,DC 20375, USA. NR 14 TC 95 Z9 95 U1 0 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 APR 3 PY 1995 VL 74 IS 14 BP 2686 EP 2689 DI 10.1103/PhysRevLett.74.2686 PG 4 WC Physics, Multidisciplinary SC Physics GA QP891 UT WOS:A1995QP89100017 ER PT J AU CALVERT, JM AF CALVERT, JM TI CHEMISTRY AND APPLICATIONS OF SELF-ASSEMBLED FILMS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USN,RES LAB,WASHINGTON,DC 20375. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 7 EP COLL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP232 UT WOS:A1995QP23201518 ER PT J AU WYNNE, KJ HO, T VU, A CHEN, X GARDELLA, JA AF WYNNE, KJ HO, T VU, A CHEN, X GARDELLA, JA TI TOWARD MINIMALLY ADHESIVE POLYMER SURFACES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USN,DIV CHEM,ARLINGTON,VA 22217. USN,MAT CHEM BRANCH,WASHINGTON,DC 20375. GEORGE MASON UNIV,DEPT CHEM,FAIRFAX,VA 22030. SUNY BUFFALO,BUFFALO,NY 14214. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 8 EP POLY PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP233 UT WOS:A1995QP23301144 ER PT J AU DUNLAP, BI AF DUNLAP, BI TI ACCURATE DENSITY-FUNCTIONAL CALCULATIONS ON LARGE SYSTEMS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USN,RES LAB,THEORET CHEM SECT,WASHINGTON,DC 20375. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 9 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP233 UT WOS:A1995QP23300768 ER PT J AU FORD, KH KOFF, JL AF FORD, KH KOFF, JL TI ADVANCED DESIGN ELECTROLYTIC METAL RECOVERY-SYSTEMS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USN,CTR NAVAL FACIL ENGN SERV,PORT HUENEME,CA 93043. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 9 EP WCC PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP233 UT WOS:A1995QP23302104 ER PT J AU FRIEDLI, AC DULCEY, CS HSU, AR CALVERT, JM AF FRIEDLI, AC DULCEY, CS HSU, AR CALVERT, JM TI ULTRATHIN FILMS FROM OMEGA-PHENYLALKYLTRICHLOROSILANES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USN,RES LAB,CTR BIOMOLEC SCI & ENGN,WASHINGTON,DC 20375. MIDDLE TENNESSEE STATE UNIV,DEPT CHEM & PHYS,MURFREESBORO,TN 37132. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 10 EP COLL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP232 UT WOS:A1995QP23201521 ER PT J AU DUNLAP, BI AF DUNLAP, BI TI DESIGNING HIGH-MAGNETIC MOMENT CLUSTERS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USN,THEORET CHEM SECT,WASHINGTON,DC 20375. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 21 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP233 UT WOS:A1995QP23300780 ER PT J AU BITTERWOLF, TE SHADE, JE AF BITTERWOLF, TE SHADE, JE TI A FACILE SYNTHESIS OF HETEROBIMETALLIC COMPOUNDS CONTAINING RUTHENIUM SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV IDAHO,DEPT CHEM,MOSCOW,ID 83844. USN ACAD,DEPT CHEM,ANNAPOLIS,MD 21402. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 47 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP232 UT WOS:A1995QP23202646 ER PT J AU MILES, MH JOHNSON, KB AF MILES, MH JOHNSON, KB TI CORRELATIONS OF EXCESS POWER AND HELIUM PRODUCTION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 NAVAL AIR WARFARE CTR,DIV WEAPONS,CHINA LAKE,CA 93555. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 59 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP233 UT WOS:A1995QP23300059 ER PT J AU VONTERSCH, RL URBAN, JJ AF VONTERSCH, RL URBAN, JJ TI AB-INITIO ANALYSIS OF THE CONFORMATIONS OF LEWISITE USING EFFECTIVE CORE POTENTIALS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USAMRICD,ABERDEEN PROVING GROUND,MD 21010. USN ACAD,DEPT CHEM,ANNAPOLIS,MD 21402. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 71 EP COMP PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP232 UT WOS:A1995QP23201832 ER PT J AU LOWREY, AH FAMINI, GR AF LOWREY, AH FAMINI, GR TI USING THEORETICAL DESCRIPTORS IN QUANTITATIVE STRUCTURE-ACTIVITY-RELATIONSHIPS - CHROMATOGRAPHIC CAPACITY FACTORS FOR ENERGETIC MATERIALS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USN,RES LAB,WASHINGTON,DC 20375. SC BRD ASI,CTR DEV & ENGN,ABERDEEN PROVING GROUND,MD 21010. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 80 EP COMP PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP232 UT WOS:A1995QP23201841 ER PT J AU PEASE, MD SHRIVER, LC LIGLER, FS AF PEASE, MD SHRIVER, LC LIGLER, FS TI ENVIRONMENTAL MONITORING WITH THE FIBER OPTIC BIOSENSOR SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USN,RES LAB,CTR BIOMOLEC SCI & ENGN,WASHINGTON,DC 20375. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 95 EP BTEC PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP233 UT WOS:A1995QP23301974 ER PT J AU HARRISON, JA AF HARRISON, JA TI MOLECULAR TRIBOLOGY OF HYDROCARBON SYSTEMS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USN ACAD,DEPT CHEM,ANNAPOLIS,MD 21402. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 99 EP COLL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP232 UT WOS:A1995QP23201610 ER PT J AU NAGEL, DJ EDSON, R AF NAGEL, DJ EDSON, R TI RADIOACTIVITY IN THE ENVIRONMENT SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OFF NAVAL RES,ARLINGTON,VA 22217. USN,RES LAB,WASHINGTON,DC 20375. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 115 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP233 UT WOS:A1995QP23300115 ER PT J AU MELINGER, JS THANTU, N MCMORROW, D AF MELINGER, JS THANTU, N MCMORROW, D TI GENERATION OF HIGHLY VIBRATIONALLY EXCITED MOLECULES WITH MODULATED INFRARED-LASER PULSES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 NATL INST STAND & TECHNOL,DIV MOLEC PHYS,GAITHERSBURG,MD 20899. USN,RES LAB,WASHINGTON,DC 20375. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 129 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP233 UT WOS:A1995QP23300882 ER PT J AU GRUNEBERG, K SHASHIDHAR, R SPRUNT, S WALBA, D ROS, MB AF GRUNEBERG, K SHASHIDHAR, R SPRUNT, S WALBA, D ROS, MB TI NOVEL LIQUID-CRYSTAL MATERIALS AND MIXTURES FOR NLO-APPLICATIONS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USN,RES LAB,CTR BIOMOLEC ENGN,WASHINGTON,DC 20375. UNIV COLORADO,DEPT CHEM & BIOCHEM,BOULDER,CO 80309. UNIV COLORADO,CTR OPTOELECTR COMP SYST,BOULDER,CO 80309. RI Walba, David/F-7284-2013 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 151 EP COLL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP232 UT WOS:A1995QP23201662 ER PT J AU RATNA, BR AF RATNA, BR TI LAMELLAR-BICONTINUOUS CUBIC PHASE-TRANSITION - RELATION BETWEEN MOLECULAR-GEOMETRY AND MEMBRANE CURVATURE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USN,RES LAB,CTR BIOMOLEC SCI & ENGN,WASHINGTON,DC 20375. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 172 EP COLL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP232 UT WOS:A1995QP23201682 ER PT J AU NOUNESIS, G RATNA, B SHIN, S FLUGEL, RS SPRUNG, S LITSTER, JD SHASHIDHAR, R KUMAR, S AF NOUNESIS, G RATNA, B SHIN, S FLUGEL, RS SPRUNG, S LITSTER, JD SHASHIDHAR, R KUMAR, S TI MAGNETOOPTICAL AND CALORIMETRIC STUDIES OF SINGLE AND MULTIPLE BILAYER PHOSPHOLIPID TUBULES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 MIT,DEPT PHYS,CAMBRIDGE,MA 02139. MIT,FRANCIS BITTER NATL MAGNET LAB,CAMBRIDGE,MA 02139. USN,RES LAB,CTR BIOMOLEC SCI & ENGN,WASHINGTON,DC 20375. KENT STATE UNIV,DEPT PHYS,KENT,OH 44242. KENT STATE UNIV,INST LIQUID CRYSTAL,KENT,OH 44242. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 173 EP COLL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP232 UT WOS:A1995QP23201683 ER PT J AU RIZOS, AK JOHNSEN, B BROWN, W NGAI, KL AF RIZOS, AK JOHNSEN, B BROWN, W NGAI, KL TI DYNAMICS IN A POLYSTYRENE ADDITIVE MIXTURE AS STUDIED BY DYNAMIC LIGHT-SCATTERING AND DIELECTRIC-RELAXATION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CRETE,DEPT CHEM,GR-71409 IRAKLION,GREECE. FDN RES & TECHNOL,GR-71409 IRAKLION,GREECE. UNIV UPPSALA,INST PHYS CHEM,S-75121 UPPSALA,SWEDEN. USN,RES LAB,WASHINGTON,DC 20375. RI Rizos, Apostolos/F-6807-2011 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 194 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP233 UT WOS:A1995QP23300947 ER PT J AU GEER, RE SHASHIDHAR, R AF GEER, RE SHASHIDHAR, R TI CROSSOVER FROM STATIC TO THERMAL LAYER UNDULATIONS IN FINITE-SIZE LIQUID-CRYSTALLINE FILMS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USN,RES LAB,CTR BIOMOLEC SCI & ENGN,WASHINGTON,DC 20375. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 196 EP COLL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP232 UT WOS:A1995QP23201705 ER PT J AU SNOW, AW BUCKLEY, LJ AF SNOW, AW BUCKLEY, LJ TI LOW DIELECTRIC FLUOROMETHYLENE CYANATE ESTER RESINS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USN RES LAB,WASHINGTON,DC 20375. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 248 EP PMSE PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP233 UT WOS:A1995QP23301774 ER PT J AU HU, HSW GRIFFITH, JR BUCKLEY, LJ SNOW, AW AF HU, HSW GRIFFITH, JR BUCKLEY, LJ SNOW, AW TI FLUORINATED TRIALLYL ETHER-HYDROSILOXANE RESINS WITH LOW DIELECTRIC-CONSTANTS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USN,RES LAB,WASHINGTON,DC 20375. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 251 EP PMSE PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP233 UT WOS:A1995QP23301777 ER PT J AU NACIRI, J CRAWFORD, G RATNA, BR SHASHIDHAR, R AF NACIRI, J CRAWFORD, G RATNA, BR SHASHIDHAR, R TI NOVEL CHIRAL SMECTIC MATERIAL - EFFECT OF SILOXY CHAIN ON ELECTROOPTIC PROPERTIES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USN,CTR BIO MOLEC SCI & ENGN,WASHINGTON,DC 20375. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 252 EP COLL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP232 UT WOS:A1995QP23201760 ER PT J AU WRIGHT, ME MULLICK, S HOOVER, JM SELTZER, MD LEE, BC AF WRIGHT, ME MULLICK, S HOOVER, JM SELTZER, MD LEE, BC TI MOLECULAR CHANDELIERS - NOVEL STRUCTURES FOR THE CONSTRUCTION OF SUPRAMOLECULAR ASSEMBLIES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UTAH STATE UNIV,DEPT CHEM & BIOCHEM,LOGAN,UT 84322. USN,RES DEPT,DIV AIR WARFARE & WEAPONS,CHINA LAKE,CA 93555. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 296 EP POLY PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP233 UT WOS:A1995QP23301432 ER PT J AU WALLNER, AS NISSAN, RA MERWIN, LH STEPHENS, T IWOMIYA, J AF WALLNER, AS NISSAN, RA MERWIN, LH STEPHENS, T IWOMIYA, J TI MAGNETIC-RESONANCE-IMAGING (MRI) OF SOLID ROCKET COMPONENTS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 MISSOURI WESTERN STATE COLL,ST JOSEPH,MO 64507. LOCKHEED MISSILES & SPACE CO INC,PALO ALTO,CA 94304. USN,CTR AIR WARFARE,DIV WEAPONS,CHINA LAKE,CA 93555. RI Stephens, Thomas/D-9512-2012 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 310 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP233 UT WOS:A1995QP23301063 ER PT J AU CAMPBELL, ML MCCLEAN, RE AF CAMPBELL, ML MCCLEAN, RE TI REACTION-KINETICS OF W(A(5)DJ, A(7)S(3) WITH O2 FROM 296-600-K SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USN ACAD,DEPT CHEM,ANNAPOLIS,MD 21402. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 314 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP233 UT WOS:A1995QP23301067 ER PT J AU HO, T WYNNE, KJ MALIK, AA AF HO, T WYNNE, KJ MALIK, AA TI POLYURETHANES BASED ON A FLUORINATED OXETANE OLIGOMER SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 GENCORP AEROJET,DEPT ADV TECHNOL,SACRAMENTO,CA 95813. GEORGE MASON UNIV,DEPT CHEM,FAIRFAX,VA 22030. OFF NAVAL RES,DIV CHEM,ARLINGTON,VA 22217. NR 0 TC 4 Z9 4 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 319 EP POLY PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP233 UT WOS:A1995QP23301455 ER PT J AU GOODWIN, RH CAMPBELL, ML AF GOODWIN, RH CAMPBELL, ML TI REACTION-KINETICS OF MO(A(7)S(3), A(5)D(J), A(5)S(2)) WITH CO2, NO, SO2, AND N2O SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USN ACAD,DEPT CHEM,ANNAPOLIS,MD 21402. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 383 EP CHED PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP232 UT WOS:A1995QP23201245 ER PT J AU PURDY, AP AF PURDY, AP TI SYNTHESIS OF TERNARY SULFIDES BY REACTION OF METAL-THIOLATE AND SILYLAMIDE PRECURSORS WITH H2S SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USN,RES LAB,DIV CHEM,WASHINGTON,DC 20375. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 507 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP232 UT WOS:A1995QP23203106 ER PT J AU STUART, TD CLIFTON, JM SCHMIDT, LV AF STUART, TD CLIFTON, JM SCHMIDT, LV TI WIND-TUNNEL TESTS OF AN INCLINED CYLINDER HAVING HELICAL GROOVES SO AIAA JOURNAL LA English DT Article AB A series of Low-speed wind-tunnel investigations were conducted to determine the aerodynamic behavior of a helically grooved inclined cylinder representing a long trailing wire antenna towed from an orbiting aircraft. The large test angle-of-attack range of the wire required two model configurations. For higher angles of attack, full-scale wires were tested. For lower angles of attack, a 15-scale grooved, cylindrical model with an ogive nose was tested. Data were evaluated and empirical relationships for the normal and axial force coefficients were verified by comparison with historical references for the baseline clean circular cylinders and were extended for the grooved configurations. The existence of a side force coefficient due to circulation caused by the helical grooves was discovered, expressed analytically, and verified with flow-visualization techniques. The experimental coefficients were used to improve an existing digital simulation model describing the static-equilibrium conditions of a long cable towed by an aircraft. Inclusion of the side force influence in the static model proved consistent with night-test observations of the wife's lateral skew angle and direction. C1 USN,CTR AIR WARFARE,DIV AIRCRAFT,PATUXENT RIVER,MD 20670. USN,POSTGRAD SCH,DEPT AERONAUT & ASTRONAUT,MONTEREY,CA 93943. RP STUART, TD (reprint author), USN,ARLINGTON,VA 22202, USA. NR 14 TC 2 Z9 2 U1 0 U2 1 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0001-1452 J9 AIAA J JI AIAA J. PD APR PY 1995 VL 33 IS 4 BP 665 EP 670 DI 10.2514/3.12629 PG 6 WC Engineering, Aerospace SC Engineering GA QT118 UT WOS:A1995QT11800012 ER PT J AU BROWN, AE LANE, JR WAGNER, KF ZHOU, S CHUNG, R RAY, KL BLATT, SP AF BROWN, AE LANE, JR WAGNER, KF ZHOU, S CHUNG, R RAY, KL BLATT, SP TI RATES OF P24 ANTIGENEMIA AND VIRAL ISOLATION IN COMPARABLE WHITE AND BLACK HIV-INFECTED SUBJECTS SO AIDS LA English DT Article DE HIV; AIDS; P24 ANTIGEN; RACE; MILITARY MEDICINE ID IMMUNODEFICIENCY-VIRUS TYPE-1; CAPTURE ASSAY AB Objective: To determine the relative frequencies of HIV-1 p24 antigen and culture positivity in white and black patients. Design: Volunteers in the US military's HIV natural history study were 46% white, 44% black, 7% Hispanic and 3% other. Focusing on the comparable groups of whites and blacks, a retrospective analysis was performed of the results of virologic assays collected over a 2-year period. Methods: p24 antigen was quantitated in sera with and without immune complex dissociation (ICD); viral isolation was performed by coculture of peripheral blood mononuclear cells. Results: Results of the two virologic assays were very similar in the two racial groups, both overall and after stratification by CD4 cell count. As reported previously, the concentration of serum immunoglobulin G was found to be greater in black than white subjects. In contrast to results with ICD, sera tested without ICD resulted in differing (higher) rates of antigenemia in whites than blacks (P=0.002). Conclusions: The frequencies of p24 antigen and culture positivity were found to be independent of race. Previously observed racial differences in antigen positivity were likely to be due to more extensive antibody binding in blacks than in whites. C1 WALTER REED ARMY INST RES,DIV PREVENT MED,ROCKVILLE,MD 20850. SRA TECHNOL,ROCKVILLE,MD. HENRY M JACKSON FDN,ROCKVILLE,MD. USN,MED CTR,BETHESDA,MD 20889. WALTER REED ARMY MED CTR,WASHINGTON,DC 20307. WILFORD HALL USAF MED CTR,SAN ANTONIO,TX 78236. RP BROWN, AE (reprint author), WALTER REED ARMY INST RES,DEPT RETROVIRAL RES,SUITE 201,13 TAFT COURT,ROCKVILLE,MD 20850, USA. OI /0000-0002-5704-8094 NR 17 TC 6 Z9 6 U1 0 U2 0 PU RAPID SCIENCE PUBLISHERS PI LONDON PA 2-6 BOUNDARY ROW, LONDON, ENGLAND SE1 8NH SN 0269-9370 J9 AIDS JI Aids PD APR PY 1995 VL 9 IS 4 BP 325 EP 328 PG 4 WC Immunology; Infectious Diseases; Virology SC Immunology; Infectious Diseases; Virology GA QP022 UT WOS:A1995QP02200002 PM 7794537 ER PT J AU SYMONDS, CL AF SYMONDS, CL TI YANKEE DUTCHMAN - THE LIFE OF SIGEL,FRANZ - ENGLE,SD SO AMERICAN HISTORICAL REVIEW LA English DT Book Review RP SYMONDS, CL (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 APR PY 1995 VL 100 IS 2 BP 587 EP 588 DI 10.2307/2169158 PG 2 WC History SC History GA QV034 UT WOS:A1995QV03400161 ER PT J AU PEELER, DP AF PEELER, DP TI ARMED WITH CAMERAS - THE AMERICAN MILITARY PHOTOGRAPHERS OF WORLD-WAR-II - MASLOWSKI,P SO AMERICAN HISTORICAL REVIEW LA English DT Book Review RP PEELER, DP (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 APR PY 1995 VL 100 IS 2 BP 608 EP 608 DI 10.2307/2169190 PG 1 WC History SC History GA QV034 UT WOS:A1995QV03400193 ER PT J AU KAISER, D AF KAISER, D TI UNTITLED SO AMERICAN HISTORICAL REVIEW LA English DT Letter RP KAISER, D (reprint author), USN,COLL WAR,WASHINGTON,DC, USA. NR 0 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 APR PY 1995 VL 100 IS 2 BP 641 EP 642 PG 2 WC History SC History GA QV034 UT WOS:A1995QV03400220 ER PT J AU YAVORSKI, RT WONG, RKH MAYDONOVITCH, C BATTIN, LS FURNIA, A AMUNDSON, DE AF YAVORSKI, RT WONG, RKH MAYDONOVITCH, C BATTIN, LS FURNIA, A AMUNDSON, DE TI ANALYSIS OF 3,294 CASES OF UPPER GASTROINTESTINAL-BLEEDING IN MILITARY MEDICAL FACILITIES SO AMERICAN JOURNAL OF GASTROENTEROLOGY LA English DT Article ID NATIONAL ASGE SURVEY; PROGNOSTIC FACTORS; SEX-DIFFERENCES; ULCER DISEASE; PEPTIC-ULCER; HEMORRHAGE; RECURRENCE; MANAGEMENT; ENDOSCOPY; MORTALITY AB Objectives: Upper gastrointestinal bleeding (UGIB) remains a commonly encountered medical emergency with significant morbidity and mortality. Most large studies detailing the specific incidence, demographic, and mortality data were performed more than a decade ago. This study analyzes 3,294 cases of UGIB from 139 military medical treatment facilities over a 12-month period. Methods: A retrospective chart review of Department of Defense military medical treatment facilities for UGIB was performed from October 1990 through September 1991. Core data such as demographic information were analyzed, as well as specific data relating to UGIB. Results: The incidence of UGIB was 36 per 100,000 population with a male-to-female ratio of 2.18 and a mean age of 52 +/- 19.65 yr. The number of cases increased with age; 44.5% of all patients were greater than or equal to 60 yr old. The overall mortality was 7.0% (231 of 3294), and death rates were similar among males and females (7.1% vs. 6.8%) with an odds ratio of 1.03 (CI: 0.77-1.402). Mortality increased with age in both genders; 73.2% of deaths occurred in patients more than 60 yr old. Comorbid illness was noted in 50.9% (1675 of 3294) of patients, with similar occurrence in males (48.7%) and females (55.4%). One or more comorbid illnesses were noted in 98.3% of the patients who died, and in 72.3% of cases, they were the primary cause of death. Bleeding was the primary cause of death in 18.6% of patients. Upper endoscopy was performed in 68.8% of cases, therapeutic endoscopy in 12.6%, repeat endoscopy in 10.7%, and surgery in 4.4%. Blood transfusions were administered in 47.3% of cases, with most patients receiving < 5 units of blood. Rebleeding after initial hemostasis was noted in 7.1% of cases. Factors related to increased mortality include age > 60 (p < 0.001), transfusion requirement > 5 U (p < 0.001), presence of comorbid illness (p < 0.001), rebleeding after initial hemostasis (p < 0.005), surgery (p < 0.001), and UGIB occurring during hospitalization (p = 0.027). Conclusions: We conclude: 1) The incidence of UGIB is 2-fold greater in males than in females, in all age groups; however, the death rate is similar in both sexes. 2) The mortality rate in this study is slightly lower than in most previous studies and may be more reflective of the average mortality in the community at large. 3) In UGIB patients, comorbid illness and not actual bleeding is the major cause of death. 4) Upper endoscopy was performed less often in this study than in other studies, and there were fewer blood transfusions; however, rebleeding and mortality rates remained similar. C1 WALTER REED ARMY MED CTR,DEPT MED,GASTROENTEROL SERV,WASHINGTON,DC 20307. FORENS MED ADVISORY SERV INC,ROCKVILLE,MD. USN,MED CTR,DEPT CRIT CARE,SAN DIEGO,CA 92152. NR 32 TC 114 Z9 120 U1 0 U2 1 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0002-9270 J9 AM J GASTROENTEROL JI Am. J. Gastroenterol. PD APR PY 1995 VL 90 IS 4 BP 568 EP 573 PG 6 WC Gastroenterology & Hepatology SC Gastroenterology & Hepatology GA QR280 UT WOS:A1995QR28000008 PM 7717312 ER PT J AU GILLESPIE, DT AF GILLESPIE, DT TI WHY IS MOMENTUM CALLED P - ANSWER SO AMERICAN JOURNAL OF PHYSICS LA English DT Letter RP GILLESPIE, DT (reprint author), USN,CTR AIR WARFARE,DIV RES & TECHNOL,CHINA LAKE,CA 93555, USA. NR 1 TC 1 Z9 1 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0002-9505 J9 AM J PHYS JI Am. J. Phys. PD APR PY 1995 VL 63 IS 4 BP 297 EP 297 DI 10.1119/1.17951 PG 1 WC Education, Scientific Disciplines; Physics, Multidisciplinary SC Education & Educational Research; Physics GA QP661 UT WOS:A1995QP66100001 ER PT J AU HUNT, JL AF HUNT, JL TI A SIMPLE CIRCUIT FOR DEMONSTRATING REGULAR AND SYNCHRONIZED CHAOS SO AMERICAN JOURNAL OF PHYSICS LA English DT Note ID SYSTEMS; SIGNALS RP HUNT, JL (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 19 TC 46 Z9 46 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0002-9505 J9 AM J PHYS JI Am. J. Phys. PD APR PY 1995 VL 63 IS 4 BP 377 EP 379 DI 10.1119/1.17923 PG 3 WC Education, Scientific Disciplines; Physics, Multidisciplinary SC Education & Educational Research; Physics GA QP661 UT WOS:A1995QP66100015 ER PT J AU LONG, GW FRIES, L WATT, GH HOFFMAN, SL AF LONG, GW FRIES, L WATT, GH HOFFMAN, SL TI POLYMERASE CHAIN-REACTION AMPLIFICATION FROM PLASMODIUM-FALCIPARUM ON DRIED BLOOD SPOTS SO AMERICAN JOURNAL OF TROPICAL MEDICINE AND HYGIENE LA English DT Article ID HUMAN-IMMUNODEFICIENCY-VIRUS; FILTER-PAPER; WHOLE-BLOOD; PCR; DNA; MALARIA; SAMPLES AB We report a simple method for the polymerase chain reaction (PCR) amplification of whole blood samples collected on filter paper. The blood spot was used directly in the PCR after treatment with methanol. We evaluated this assay using clinical samples collected from subjects in a Plasmodium falciparum vaccine trial and from samples collected during a hospital-based study in Thailand. Specimens prepared from heparinized blood samples were successfully amplified following pretreatment with heparinase. Sensitivity was 100% when compared with thick blood film results in the vaccine trial (range = 4-60 parasites/mu l, median = 8/mu l) and 94.6% (range = 3-133,988 parasites/mu l, median = 616/mu l) in the hospital study. C1 JOHNS HOPKINS UNIV,SCH HYG & PUBL HLTH,CTR VACCINE RES,BALTIMORE,MD 21205. ARMED FORCES RES INST MED SCI,DEPT MED,BANGKOK 10400,THAILAND. RP LONG, GW (reprint author), USN,MED RES INST,MALARIA PROGRAM,12300 WASHINGTON AVE,ROCKVILLE,MD 20852, USA. NR 18 TC 23 Z9 23 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 APR PY 1995 VL 52 IS 4 BP 344 EP 346 PG 3 WC Public, Environmental & Occupational Health; Tropical Medicine SC Public, Environmental & Occupational Health; Tropical Medicine GA QX896 UT WOS:A1995QX89600013 PM 7741174 ER PT J AU GRAY, GC RODIER, GR MATRASMASLIN, VC HONEIN, MA ISMAIL, EA BOTROS, BAM SOLIMAN, AK MERRELL, BR WANG, SP GRAYSTON, JT AF GRAY, GC RODIER, GR MATRASMASLIN, VC HONEIN, MA ISMAIL, EA BOTROS, BAM SOLIMAN, AK MERRELL, BR WANG, SP GRAYSTON, JT TI SEROLOGIC EVIDENCE OF RESPIRATORY AND RICKETTSIAL INFECTIONS AMONG SOMALI REFUGEES SO AMERICAN JOURNAL OF TROPICAL MEDICINE AND HYGIENE LA English DT Article ID PNEUMONIAE STRAIN TWAR; CHLAMYDIA-PNEUMONIAE; SPOTTED-FEVER; EPIDEMIOLOGY; MORTALITY; DIAGNOSIS; DISEASES AB Somali refugees living in a camp located in Djibouti were studied in October 1991 and May 1992. The refugees had been living at the camp for about two years. The median age of volunteers was 25 years, of whom 69% were female. Paired sera obtained seven months apart were evaluated by complement fixation, microimmunofluorescence, indirect fluorescent antibody, streptococcal antibody, and enzyme-linked immunosorbent assay techniques for evidence of pathogen infection. Fifty-two percent, 31.3%, 8.0%, 5.9%, and 25.4% of the volunteers had serologic evidence for pre-enrollment infection with Chlamydia pneumoniae, Mycoplasma pneumoniae, Rickettsia typhi, R. conorii, and Coxiella burnetii, respectively. Similarly, 43.5%, 5.2%, 6.1%, 10.7%, 15.8%, and 11.9% of the volunteers studied had serologic evidence for new infection with Streptococcus pyogenes, C. pneumoniae, M. pneumoniae, R. typhi, R. conorii, and Cox. burnetii, respectively. These data suggest that the studied pathogens may be endemic in displaced populations living in the Horn of Africa. C1 DJIBOUTI MINIST WORK,SERV MED INTERENTREPRISES,DJIBOUTI,DJIBOUTI. UNIV CALIF LOS ANGELES,SCH PUBL HLTH,DEPT EPIDEMIOL,LOS ANGELES,CA 90024. WHO,DJIBOUTI,DJIBOUTI. USN,MED RES UNIT 3,VIROL BRANCH,CAIRO,EGYPT. USN,MED RES UNIT 3,EPIDEMIOL BRANCH,CAIRO,EGYPT. USN,MED RES UNIT 3,DEPT RES SERV,CAIRO,EGYPT. UNIV WASHINGTON,SCH PUBL HLTH & COMMUNITY MED,DEPT EPIDEMIOL,SEATTLE,WA 98195. RP GRAY, GC (reprint author), USN,MED RES UNIT 3,PSC 452 BOX 5000,FPO,AE 09835, USA. NR 33 TC 9 Z9 10 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 APR PY 1995 VL 52 IS 4 BP 349 EP 353 PG 5 WC Public, Environmental & Occupational Health; Tropical Medicine SC Public, Environmental & Occupational Health; Tropical Medicine GA QX896 UT WOS:A1995QX89600015 PM 7741176 ER PT J AU POSTMA, G AF POSTMA, G TI BILATERAL VOCAL CORD PARALYSIS SO ANAESTHESIA AND INTENSIVE CARE LA English DT Letter RP POSTMA, G (reprint author), USN,MED CTR PORTSMOUTH,DEPT OTOLARYNGOL,PORTSMOUTH,VA, USA. NR 2 TC 1 Z9 1 U1 0 U2 0 PU AUSTRALIAN SOC ANAESTHETISTS PI EDGECLIFF PA P O BOX 600, EDGECLIFF, NSW 2021, AUSTRALIA SN 0310-057X J9 ANAESTH INTENS CARE JI Anaesth. Intensive Care PD APR PY 1995 VL 23 IS 2 BP 253 EP 253 PG 1 WC Anesthesiology; Critical Care Medicine SC Anesthesiology; General & Internal Medicine GA QQ869 UT WOS:A1995QQ86900029 PM 7793607 ER PT J AU KRUITHOFF, WA AKL, BF BLACKY, AR AF KRUITHOFF, WA AKL, BF BLACKY, AR TI SURGICAL REPAIR OF AN ANTERIOR MITRAL SUBVALVULAR ANEURYSM SO ANNALS OF THORACIC SURGERY LA English DT Note ID LEFT-VENTRICULAR ANEURYSMS AB An individual with a ruptured congenital subvalvular aneurysm is presented. The anterior location in the mitral annulus compromised the intervalvular fibrosa shared by the aortic valve. Aortic and mitral valve replacement were required to obliterate the resulting fistula between the left ventricle and left atrium. C1 VIRGINIA HEART CTR,CARDIAC SURG SECT,FALLS CHURCH,VA. RP KRUITHOFF, WA (reprint author), USN,NATL MED CTR,DEPT INTERNAL MED,DIV CARDIOL,BETHESDA,MD 20889, USA. NR 8 TC 6 Z9 6 U1 0 U2 0 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 APR PY 1995 VL 59 IS 4 BP 1001 EP 1003 DI 10.1016/0003-4975(94)00739-T PG 3 WC Cardiac & Cardiovascular Systems; Respiratory System; Surgery SC Cardiovascular System & Cardiology; Respiratory System; Surgery GA QP487 UT WOS:A1995QP48700038 PM 7695371 ER PT J AU ZACHARIAS, N AF ZACHARIAS, N TI FIELD DISTORTIONS IN THE CPC2 PLATE DATA SO ASTRONOMICAL JOURNAL LA English DT Article ID CAPE PHOTOGRAPHIC CATALOG C1 USN OBSERV AD,WASHINGTON,DC 20392. NR 15 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 0004-6256 J9 ASTRON J JI Astron. J. PD APR PY 1995 VL 109 IS 4 BP 1880 EP 1888 DI 10.1086/117415 PG 9 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QP655 UT WOS:A1995QP65500043 ER PT J AU TEMME, LA STILL, DL FATCHERIC, AJ AF TEMME, LA STILL, DL FATCHERIC, AJ TI JET PILOT, HELICOPTER PILOT, AND COLLEGE-STUDENT - A COMPARISON OF CENTRAL VISION SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article ID FIGHTER PILOTS; NAVY AB Jet pilots (JP) (N = 44), helicopter pilots (Hp) (N = 29), and college students (CS) (N = 41) were tested with a battery of vision tests designed to assess vision skills important for success as a naval aviator. Tests included measures of reaction time, high-contrast acuity, low-contrast acuity, spot detection, far-to-near gaze shift, near-to-far gaze shift, low-contrast acuity with glare, and dark focus. A Multi-Variate Analysis of Variance (MANOVA) compared the vision test performance of the three subject groups (JP, HP, and CS). Only with the Far-to-Near test was there no difference among the three groups. On all other tests, JP outperformed CS. The difference between HP and CS was less consistent and less dramatic than the difference between JP and CS. Only with the glare test were CS significantly better than HP. The results were interpreted as reflecting the influence of various selection factors, operational requirements, differential attrition, and age. RP TEMME, LA (reprint author), USN,AEROSP MED RES LAB,DIV SENSORY SCI,51 HOVEY RD,PENSACOLA,FL 32508, USA. NR 22 TC 1 Z9 1 U1 2 U2 3 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD APR PY 1995 VL 66 IS 4 BP 297 EP 302 PG 6 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA QQ607 UT WOS:A1995QQ60700001 PM 7794219 ER PT J AU MARKOVITS, AS REDDIX, MD OCONNELL, SR COLLYER, PD AF MARKOVITS, AS REDDIX, MD OCONNELL, SR COLLYER, PD TI COMPARISON OF BIFOCAL AND PROGRESSIVE ADDITION LENSES ON AVIATOR TARGET DETECTION PERFORMANCE SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article ID HUMAN-EYE; ACCOMMODATION; PRESBYOPIA; PILOTS; FIELD; GAZE AB The objective of this project was to determine if the type of presbyopic correction worn by aviators, conventional bifocal versus progressive addition lenses (PAL's), differentially affects aviator visual search performance. Experienced aviators, most with tactical fighter aircraft experience, searched for high contrast targets under simulated dawn/dust (mesopic) lighting conditions (similar to 3.0 cd/m(2)) while wearing either a standard bifocal (St-25) or PAL spectacle correction. Latency of locating high-contrast targets under these viewing conditions wets differentially affected by the type of presbyopic correction used. Specifically, compared to a standard bifocal (ST-25), a PAL correction (Varilux infinity(R)) significantly lowered the time needed to locate static targets at a cockpit instrument viewing distance (83 cm). Accuracy of target location responses was not affected by the type of correction used. In addition, 7 months post-experiment, 7 of the 12 participants (58%) indicated that they used their PAL correction exclusively when flying the T-39 Sabre Liner. Three subjects (25%) used their PAL correction intermittently (primarily at night) when flying and two subjects preferred not to use the PAL's. These results suggest that relative to bifocals, speed of responding to static targets at intermediate viewing distances may be improved by wearing PAL's, and that subjects were able to adapt to PAL lenses quickly in a laboratory setting, using them later in a functional aviation environment. C1 USN,AEROSP MED RES LAB,PENSACOLA,FL. USN HOSP,DEPT OPHTHALMOL,SAN DIEGO,CA 92134. RP MARKOVITS, AS (reprint author), USN,INST AEROSP & OPERAT MED,220 HOVEY RD,PENSACOLA,FL 32508, USA. NR 25 TC 6 Z9 6 U1 0 U2 2 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD APR PY 1995 VL 66 IS 4 BP 303 EP 308 PG 6 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA QQ607 UT WOS:A1995QQ60700002 PM 7794220 ER PT J AU NERI, DF WIEGMANN, D STANNY, RR SHAPPELL, SA MCCARDIE, A MCKAY, DL AF NERI, DF WIEGMANN, D STANNY, RR SHAPPELL, SA MCCARDIE, A MCKAY, DL TI THE EFFECTS OF TYROSINE ON COGNITIVE PERFORMANCE DURING EXTENDED WAKEFULNESS SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article ID TOTAL SLEEP-DEPRIVATION; DIETARY TYROSINE; STRESS; MOOD; AMPHETAMINE; DECREMENT; RATS AB Tyrosine, a large neutral amino acid found in dietary proteins, has received recent attention as a potential treatment for stress. The behavioral effects of tyrosine were examined during an episode of continuous nighttime work involving one night's sleep loss. Subjects performed nine iterations of a battery of performance tasks and mood scales for approximately 13 h, beginning at 1930 and ending at 0820. They remained awake throughout the day on which the experiment began and were awake for more than 24 h by the end of testing. Six hours after the experiment began, one-half of the subjects received 150 mg . kg(-1) tyrosine in a split dose while the other half received cornstarch placebo in a double-blind procedure. Tyrosine administration was associated with a significant amelioration of the usual performance decline on a psychomotor task and a significant reduction in lapse probability on a high-event-rate vigilance task. The improvements lasted on the order of 3 h. The results of this study also suggest that tyrosine is a relatively benign treatment at this dose. After further testing with other doses and timing of administration, tyrosine may prove useful in counteracting performance decrements during episodes of sustained work coupled with sleep loss. C1 USN,AEROSP MED RES LAB,PENSACOLA,FL. NR 36 TC 45 Z9 47 U1 0 U2 5 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD APR PY 1995 VL 66 IS 4 BP 313 EP 319 PG 7 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA QQ607 UT WOS:A1995QQ60700004 PM 7794222 ER PT J AU MARCINIK, EJ HYDE, DE TAYLOR, WF AF MARCINIK, EJ HYDE, DE TAYLOR, WF TI THE RELATIONSHIP BETWEEN THE US NAVY FLEET GIVER PHYSICAL SCREENING-TEST AND JOB TASK-PERFORMANCE SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article AB The development of job related selection and training methods will improve safety and lead to substantial cost savings to the U.S. Navy through enhanced screening and productivity. The present investigation determined the extent to which the current U.S. Navy fleet diver physical screening test predicted performance of five representative physically demanding job tasks. Subjects were 146 male diver candidates (age 25.1 +/- 4.3 years, X +/- SD, range 18-37 years) undergoing training at the Naval Diving and Salvage Training Center, Panama City, FL. Results indicate the current U.S. Navy fleet diver physical screening test provides a poor estimate of representative job task performance for the population of diver candidates tested. A finding of particular operational significance was that a substantial number of diver candidates who passed current physical screening test standards were unable to complete (i.e., failed) the tool-bag swim (18.5%) and fin-kick (25.7%) tasks. Results suggest the current screening test has limited utility for physical selection purposes and underscore the need for developing a requirements based selection battery to ensure that diver physical capabilities are aligned to the job. C1 USN,MED RES INST,HYPERBAR ENVIRONM ADAPTAT PROGRAM,BETHESDA,MD. NR 6 TC 1 Z9 1 U1 0 U2 0 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD APR PY 1995 VL 66 IS 4 BP 320 EP 324 PG 5 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA QQ607 UT WOS:A1995QQ60700005 PM 7794223 ER PT J AU HACKNEY, AC FEITH, S POZOS, R SEALE, J AF HACKNEY, AC FEITH, S POZOS, R SEALE, J TI EFFECTS OF HIGH-ALTITUDE AND COLD-EXPOSURE ON RESTING THYROID-HORMONE CONCENTRATIONS SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article ID OPERATIONS; RESIDENCE AB This study examined the effect of high altitude and cold exposure on thyroid hormone status during a mountaineering expedition. There were 15 males participating in an expedition to climb Mt. McKinley, AK. Resting blood samples were collected and analyzed for thyroid-stimulating hormone (TSH), total (T)-free (f) thyroxine (T4), triiodothyronine (T3), reverse T3 (rT3), and cortisol. Measurements were made on three occasions: baseline in the continental U.S. one week pre-expedition (PRE-I), baseline in Alaska immediately pre-expedition (PRE-II), and immediately upon descent post-expedition (POST). Statistical analysis indicated that no significant trial PRE-I vs. PRE-II (p > 0.05) differences occurred. Significant (p < 0.05) reductions, however, occurred from PRE-II to POST expedition in TSH, TT3, and fT3. Also rT3 and cortisol increased significantly PRE-II to POST while TT4 and fT4 were unchanged. The increase (Delta = POST minus PRE-II) in cortisol was negatively correlated with the decrease (Delta) in TSH (r = -0.52, p = 0.05) and TT3 (r = -0.49, p < 0.06). Moreover, the reduction in TT3 was inversely correlated with the rT3 increase (Delta comparison, r = -0.66, p < 0.01). The findings demonstrate that the resting concentrations of thyroid hormones are disrupted by a mountaineering expedition, specifically an environmental stress-related ''low T3 condition'' seems to develop. These changes would seem to be related to an impaired peripheral conversion of T4 to T3, possibly brought about by elevations in the circulating cortisol levels. C1 USN,HLTH RES CTR,DEPT OCCUPAT PERFORMANCE,SAN DIEGO,CA 92152. BELTSVILLE HUMAN NUTR RES CTR,ENERGY & NUTR LAB,BELTSVILLE,MD. RP HACKNEY, AC (reprint author), UNIV N CAROLINA,APPL PHYSIOL LAB,CB 8700 FETZER BLDG,CHAPEL HILL,NC 27599, USA. RI HACKNEY, ANTHONY/D-9521-2013 FU NCRR NIH HHS [RR00046, 2 S07 RR07072] NR 21 TC 17 Z9 18 U1 0 U2 2 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD APR PY 1995 VL 66 IS 4 BP 325 EP 329 PG 5 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA QQ607 UT WOS:A1995QQ60700006 PM 7794224 ER PT J AU CHO, AA CLARK, JB RUPERT, AH AF CHO, AA CLARK, JB RUPERT, AH TI VISUALLY TRIGGERED MIGRAINE HEADACHES AFFECT SPATIAL ORIENTATION AND BALANCE IN A HELICOPTER PILOT SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article ID VESTIBULAR SYSTEM; YOUNG-ADULTS; ADOLESCENTS; DISCOMFORT; PREVALENCE; CHILDHOOD; PAIN AB The authors present a case of an attack helicopter pilot with recurrent spatial disorientation (SD) flying with night vision goggles (NVG's), diagnosed as having visually triggered migraine headaches. Serial Dynamic Platform Posturography testing during an acute migraine attach demonstrated balance dysfunction under visual and somatosensory deficient conditions, correlating with headache intensity, Vestibular symptoms are associated with migraine, and may be triggered by visual stimuli. NVG scintillations in susceptible individuals may act as a visual trigger for migraine, Migraine phenomenon may be a contributing factor to SD, especially during NVG operations, The association of visual and vestibular dysfunction with migraine and aeromedical disposition of migraine in aviators is discussed. C1 USN,AEROSP MED RES LAB,DIV ACCELERAT,PENSACOLA,FL 32508. MARINE AVIAT WEAP & TACT SQUADRON 1,YUMA,AZ. OI Clark, Jonathan/0000-0002-1162-1238 NR 28 TC 7 Z9 7 U1 0 U2 2 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD APR PY 1995 VL 66 IS 4 BP 353 EP 358 PG 6 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA QQ607 UT WOS:A1995QQ60700010 PM 7794228 ER PT J AU DAVIS, TA ROBINSON, DH LEE, KP KESSLER, SW AF DAVIS, TA ROBINSON, DH LEE, KP KESSLER, SW TI PORCINE BRAIN MICROVASCULAR ENDOTHELIAL-CELLS SUPPORT THE IN-VITRO EXPANSION OF HUMAN PRIMITIVE HEMATOPOIETIC BONE-MARROW PROGENITOR CELLS WITH A HIGH REPLATING POTENTIAL - REQUIREMENT FOR CELL-TO-CELL INTERACTIONS AND COLONY-STIMULATING FACTORS SO BLOOD LA English DT Article ID STROMAL CELLS; STEM-CELLS; ANTIGENIC ANALYSIS; FORMING CELLS; GROWTH-FACTORS; GM-CSF; INVITRO; CULTURE; DIFFERENTIATION; PROLIFERATION AB Primary autologous as well as allogeneic and xenogeneic stroma will support human stem cell proliferation and differentiation for several months. In the present study, we investigated the capacity of porcine microvascular endothelial cells (PMVECs) together with combinations of cytokines (granulocyte-macrophage colony-stimulating factor [GM-CSF] + stem cell factor [SCF], interleukin-3 [IL-3] + SCF + IL-6, and GM-CSF + IL-3 + SCF + IL-6) to support the expansion and development of purified human CD34(+) bone marrow cells. In short-term cultures (7 days), the greatest expansion of nonadherent hematopoietic cells and clonogenic progenitors was seen with CD34(+) cells in direct contact with PMVEC monolayers (PMVEC contact), followed by PMVEC noncontact and liquid suspension cultures, respectively. Maximal expansion of nonadherent cells (42-fold) and total CD34(+) cells (12.6-fold) occurred in PMVEC contact cultures treated with GM-CSF + IL-3 + SCF + IL-6, with similar increases in the number of granulocyte-macrophage colony-forming units (CFU-GM). CFU-mix, erythroid hurst-forming units (BFU-E), CFU-blast and CFU-megakaryocyte (CFU-Mk) progenitor cells. Moreover, the number of CD34(+) CD38(-) and CD34(+) CD38(+) cells increased 148.1-fold and 8.0-fold, respectively. Replating studies show that cells from day 7 dispersed blast cell colonies generated on cytokine-treated PMVEC monolayers have a high replating potential for multilineage progenitor cells. In long-term PMVEC contact cultures, CD34(+) cells seeded onto PMVEC monolayers with GM-CSF + IL-3 + SCF + IL-6 showed a total calculated expansion of over 5,000,000-fold of nonadherent cells over 35 days in culture. Maximal clonogenic cell production was observed at day 28, with 6,353-fold for total CFC and comparable increases for CFU-GM. CFU-mix, CPU-blast, BFU-E, and CFU-Mk. The total number of CD34(+) cells increased 2,584 fold at day 28. Furthermore, the extended growth kinetics of these cultures indicates that these phenotypically primitive progenitor cells are also functionally expanded on PMVEC monolayers. These results support the hypothesis that direct contact with a PMVEC monolayer supports the initial expansion of hematopoietic progenitor cells with a high replating potential and, possibly, a more primitive phenotype (CD34(+), CD34(+)/CD38(-)). (C) 1995 by The American Society of Hematology. C1 UNIFORMED SERV UNIV HLTH SCI,BETHESDA,MD. USN,MED RES INST,BAR CELLULAR & MOLEC NEUROBIOL PROGRAM,BETHESDA,MD. RP DAVIS, TA (reprint author), USN,MED RES INST,IMMUNE CELL BIOL PROGRAM,8901 WISCONSIN AVE,BETHESDA,MD 20889, USA. NR 59 TC 71 Z9 75 U1 1 U2 1 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0006-4971 J9 BLOOD JI Blood PD APR 1 PY 1995 VL 85 IS 7 BP 1751 EP 1761 PG 11 WC Hematology SC Hematology GA QP613 UT WOS:A1995QP61300009 PM 7535587 ER PT J AU STEVENS, RA BEARDSLEY, D WHITE, JL AF STEVENS, RA BEARDSLEY, D WHITE, JL TI DOES SPINAL-ANESTHESIA RESULT IN A MORE COMPLETE SYMPATHECTOMY THAN EXTRADURAL ANESTHESIA SO BRITISH JOURNAL OF ANAESTHESIA LA English DT Meeting Abstract DE ANESTHETIC TECHNIQUES, EXTRADURAL; ANESTHETICS LOCAL, LIGNOCAINE C1 LOYOLA UNIV,DEPT ANESTHESIOL,MAYWOOD,IL. USN,NATL NAVAL MED CTR,BETHESDA,MD. GEORGE WASHINGTON UNIV,WASHINGTON,DC. NR 2 TC 0 Z9 0 U1 0 U2 0 PU PROF SCI PUBL PI LONDON PA TAVISTOCK HOUSE EAST, TAVISTOCK SQUARE, LONDON, ENGLAND WC1H 9JR SN 0007-0912 J9 BRIT J ANAESTH JI Br. J. Anaesth. PD APR PY 1995 VL 74 IS 4 BP P480 EP P480 PG 1 WC Anesthesiology SC Anesthesiology GA QP368 UT WOS:A1995QP36800042 ER PT J AU LIMJOCO, UR LANDON, CW RAGLAND, JJ AF LIMJOCO, UR LANDON, CW RAGLAND, JJ TI THE CONTRIBUTIONS OF CARREL,ALEXIS TO THE MANAGEMENT OF CONTAMINATED WOUNDS SO CANADIAN JOURNAL OF SURGERY LA English DT Article AB Wound care through the ages has ranged from good to bad, and at times has been disgusting, with little scientific approach. von Eiselberg's dictum of no touch for military wounds proved disastrous to patients with gunshot and shrapnel wounds in the First World War. Alexis Carrel, a brilliant experimental surgeon, spearheaded the research that led to the development and application of debridement and irrigation for combat wounds. Early in his career, Carrel reported on a miraculous cure that he had observed in Lourdes, France. However, this report resulted in a strained professional environment in his homeland of France, which persisted in spite of his subsequent moves to Canada and then to the United States. There he was awarded the Nobel Prize for Physiology and Medicine. C1 USN,MED CTR,DEPT GEN SURG,SAN DIEGO,CA 92134. RP LIMJOCO, UR (reprint author), USN,MED CTR,DEPT CLIN INVEST,SAN DIEGO,CA 92134, USA. NR 28 TC 6 Z9 6 U1 0 U2 1 PU CANADIAN MEDICAL ASSOCIATION PI OTTAWA PA 1867 ALTA VISTA DR, OTTAWA ON K1G 3Y6, CANADA SN 0008-428X J9 CAN J SURG JI Can. J. Surg. PD APR PY 1995 VL 38 IS 2 BP 183 EP 187 PG 5 WC Surgery SC Surgery GA QR296 UT WOS:A1995QR29600017 PM 7728675 ER PT J AU SCHOBEL, HP OREN, RM MARK, AL FERGUSON, DW AF SCHOBEL, HP OREN, RM MARK, AL FERGUSON, DW TI INFLUENCE OF RESTING SYMPATHETIC ACTIVITY ON REFLEX SYMPATHETIC RESPONSES IN NORMAL MAN SO CLINICAL AUTONOMIC RESEARCH LA English DT Article DE AUTONOMIC NERVOUS SYSTEM; CARDIOPULMONARY BAROREFLEX; COLD PRESSER STIMULUS; PRESSORECEPTORS ID BODY NEGATIVE-PRESSURE; CONGESTIVE HEART-FAILURE; HUMAN MUSCLE NERVES; VASOCONSTRICTOR RESPONSES; BAROREFLEX CONTROL; BLOOD-PRESSURE; LEG MUSCLES; RECORDINGS; EXERCISE; OUTFLOW AB REFLEX sympathetic responses to physiologic stress are known to be modulated by afferent sensory mechanisms. However, the potential influence of baseline sympathetic tone on these reflex-mediated responses is unclear. To test the hypothesis that the resting level of muscle sympathetic nerve activity (MSNA) influences reflex-mediated changes in MSNA in normal man, MSNA blood pressure (BP), central venous pressure (CVP), and heart rate (HR) was measured in 38 normal subjects at rest and during deactivation of cardiopulmonary baroreceptors (CPBR) with lower body negative pressure (LBNP; 0 to -15 mmHg). A cold presser test (CPT) also was performed Fn 25 subjects. Incremental LBNP decreased CVP (from 5.8 +/- 0.4 to 2.1 +/- 0.4 mmHg) without altering BP or HR, and increased in MSNA burst frequency (from 22.5 +/- 1.4 to 30.2 +/- 1.4 bursts/min). There was no significant correlation between levels of MSNA and any haemodynamic parameter at rest. There was a significant inverse correlation between CPBR sympathetic gain (CPBRSG, slope of the regression line correlating percentage change in MSNA (bursts/min) pei mmHg decrease in CVP during non-hypotensive LBNP) and resting MSNA (r = -0.72, p < 0.0001). A significant inverse correlation was also observed between MSNA responses to the CPT (expressed as percentage change in burst frequency from control) and the resting MSNA (r = -0.63, p = 0.008). Sixteen subjects were restudied 3 weeks to 14 months later to determine reproducibility of measurements; resting BP and CVP, HR, and MSNA levels were not different between the two sessions, as was CPBRSG, In ten of these 16 subjects, in whom the CPT was repeated the MSNA response also was not significantly different. These studies demonstrate an inverse relationship between resting MSNA and both cardiopulmonary baroreflex sensitivity and sympathetic neural responses to the nonbaroreflex mediated cold presser stimulus. These findings suggest that resting levels of sympathetic neural activity influence reflex-mediated changes in muscle sympathetic nerve activity. C1 UNIV IOWA HOSP,CARDIOVASC RES CTR,DEPT INTERNAL MED,DIV CARDIOVASC,CLIN CARDIOVASC PHYSIOL LAB,IOWA CITY,IA. UNIV IOWA HOSP,CLIN RES CTR,DEPT INTERNAL MED,DIV CARDIOVASC,CLIN CARDIOVASC PHYSIOL LAB,IOWA CITY,IA. UNIV IOWA,COLL MED,IOWA CITY,IA 52242. USN,NATL MED CTR,USNR,CDR,MC,DIV CARDIOVASC,BETHESDA,MD 20889. FU NHLBI NIH HHS [HL-07121, HL-24962, HL-39340] NR 26 TC 19 Z9 19 U1 0 U2 1 PU RAPID SCIENCE PUBLISHERS PI LONDON PA 2-6 BOUNDARY ROW, LONDON, ENGLAND SE1 8NH SN 0959-9851 J9 CLIN AUTON RES JI Clin. Auton. Res. PD APR PY 1995 VL 5 IS 2 BP 71 EP 80 DI 10.1007/BF01827466 PG 10 WC Clinical Neurology; Neurosciences SC Neurosciences & Neurology GA QX939 UT WOS:A1995QX93900002 PM 7620296 ER PT J AU HYAMS, KC AF HYAMS, KC TI RISKS OF CHRONICITY FOLLOWING ACUTE HEPATITIS-B VIRUS-INFECTION - A REVIEW SO CLINICAL INFECTIOUS DISEASES LA English DT Review ID ACUTE VIRAL-HEPATITIS; CONTROLLED CLINICAL-TRIAL; POSITIVE CARRIER MOTHERS; PLACEBO-CONTROLLED TRIAL; SURFACE-ANTIGEN HBSAG; UNITED-STATES-ARMY; HOMOSEXUAL MEN; PERINATAL TRANSMISSION; VERTICAL TRANSMISSION; INFANTS BORN AB A bibliographic search was conducted of English-language articles dealing with chronic hepatitis B virus (HBV) infection to evaluate the risk of chronicity following acute infection, Chronic HBV infection was defined as carriage of hepatitis B surface antigen (HBsAg) for at least 6 months. On the basis of incidence studies employing standard serological test methods, the highest risk (80%-90%) of chronic infection was found to be among infected neonates born to hepatitis B e antigen-positive carrier mothers. Of children infected before 6 years of age, chronic infection was reported to develop in similar to 30%. A relatively wide range of risks (<1%-12%) was found among diverse populations of older children and adults. However, most of the 10 identified incidence studies of generally healthy adults indicated that the risk of chronicity is very low: less than or equal to 5% in eight studies. In addition, the pooled incidence of chronicity was <5% among two different adult population groups: initially uninfected subjects, who usually experienced asymptomatic infection, and patients presenting with acute hepatitis B. In addition to the primary influence of age, the studies revealed a higher risk of chronic HBV infection among males and among patients with impaired immunity due to various causes. RP HYAMS, KC (reprint author), USN,MED RES INST,12300 WASHINGTON AVE,ROCKVILLE,MD 20852, USA. NR 118 TC 219 Z9 233 U1 1 U2 7 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 APR PY 1995 VL 20 IS 4 BP 992 EP 1000 PG 9 WC Immunology; Infectious Diseases; Microbiology SC Immunology; Infectious Diseases; Microbiology GA QP662 UT WOS:A1995QP66200039 PM 7795104 ER PT J AU LEWIS, T AF LEWIS, T TI INFOBUSINESS MEETS NEUROMANCER 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 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 APR PY 1995 VL 28 IS 4 BP 7 EP 8 PG 2 WC Computer Science, Hardware & Architecture; Computer Science, Software Engineering SC Computer Science GA QR045 UT WOS:A1995QR04500004 ER PT J AU LEWIS, TG AF LEWIS, TG TI WHERE IS CLIENT-SERVER SOFTWARE HEADED SO COMPUTER LA English DT Article AB Business software applications account for more than half of the industrial software pie, so it's not surprising that these applications are occupying the thoughts of IT managers, programmers, and analysts. These experts are thinking about them in terms of distributed computing. In its present form, distributed computing is actually client/server computing, which is just a step toward the decentralized, peer-to-peer collaborative computing utopia predicted for the 21st century. The author outlines information technology as it evolved from the days of centralized mainframes to desktop PCs and relates the impact on programmers of new development technologies accompanying the evolution. Several promising software ideas are examined, especially distributed software, which affects everyone in computing because it seems to be the economic engine propelling all software. Distributed software's underlying infrastructure, called middleware, is also discussed. Middleware is key to the fortunes of software manufacturers because it will become the infrastructure of all applications, from home computers to large-scale enterprise computers. The two approaches discussed here are OLE/COM from Microsoft and Opendoc/DSOM from Component Integration Laboratories. In examining the driving forces behind industrial software and its ongoing evolution, the author defines a taxonomy for distributed computing, looks at interoperability issues, explains the role of object technology, and describes the possible eventual outcome of client/server computing. RP LEWIS, TG (reprint author), USN,POSTGRAD SCH,CODE CS,MONTEREY,CA 93943, USA. NR 2 TC 4 Z9 7 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 APR PY 1995 VL 28 IS 4 BP 49 EP 55 DI 10.1109/2.375177 PG 7 WC Computer Science, Hardware & Architecture; Computer Science, Software Engineering SC Computer Science GA QR045 UT WOS:A1995QR04500010 ER PT J AU LILLARD, RS KRUGER, J TAIT, WS MORAN, PJ AF LILLARD, RS KRUGER, J TAIT, WS MORAN, PJ TI USING LOCAL ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY TO EXAMINE COATING FAILURE SO CORROSION LA English DT Article DE COATINGS; DEFECTS; IMPEDANCE; ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY; LOCAL ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY; MODELING; UREA-FORMALDEHYDE; WELD SEAM ID ORGANIC COATINGS; CORROSION; SYSTEMS; METALS; STEEL AB Local electrochemical impedance spectroscopy (LEIS) was used to locate and examine the electrochemical properties of artificial and natural defects in a heat-cured, urea-formaldehyde modified epoxy coating. This coating is used to protect the interior of tin-coated mild steel cans sealed using resistance welding. Samples containing weld coating, nonweld coating, and an artificial defect were immersed in a 0.10 M sodium chloride (NaCl) solution buffered to pH 7.2 with boric acid/sodium borate. LEIS maps demonstrated that the coating failed preferentially over the weld seam at a rate greater than that at the artificial defect. Failure was detected by LEIS prior to visual observation of coating failure. Comparable electrochemical impedance spectroscopy (EIS) data generated after each LEIS experiment could be modeled by the conventional two-time constant porous penetration model. LEIS results demonstrated that there were three time constants in this system (coating, defect, and weld seam), indicating that a method for determining local impedance properties is preferable. C1 JOHNS HOPKINS UNIV,DEPT MAT SCI & ENGN,BALTIMORE,MD 21218. SC JOHNSON WAX CO,RACINE,WI 53403. USN ACAD,DEPT MECH ENGN,ANNAPOLIS,MD 21402. NR 30 TC 33 Z9 33 U1 0 U2 8 PU NATL ASSN CORROSION ENG PI HOUSTON PA 1440 SOUTH CREEK DRIVE, HOUSTON, TX 77084-4906 SN 0010-9312 J9 CORROSION JI Corrosion PD APR PY 1995 VL 51 IS 4 BP 251 EP 259 PG 9 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA RL388 UT WOS:A1995RL38800001 ER PT J AU WIESELTHIER, JE BARNHART, CM EPHREMIDES, A AF WIESELTHIER, JE BARNHART, CM EPHREMIDES, A TI STANDARD CLOCK SIMULATION AND ORDINAL OPTIMIZATION APPLIED TO ADMISSION CONTROL IN INTEGRATED COMMUNICATION-NETWORKS SO DISCRETE EVENT DYNAMIC SYSTEMS-THEORY AND APPLICATIONS LA English DT Article DE OPTIMIZATION; STANDARD CLOCK; ORDINAL OPTIMIZATION; COMMUNICATION NETWORK; VOICE DATA INTEGRATION; SIMULATION AB In this paper we apply the ideas of ordinal optimization and the technique of Standard Clock (SC) simulation to the voice-call admission-control problem in integrated voice/data multihop radio networks. This is an important problem in networking that is not amenable to exact analysis by means of the usual network modeling techniques. We first describe the use of the SC approach on sequential machines, and quantify the speedup in simulation time that is achieved by its use in a number of queueing examples. We then develop an efficient simulation model for wireless integrated networks based on the use of the SC approach, which permits the parallel simulation of a large number of admission-control policies, thereby reducing computation time significantly. This model is an extension of the basic SC approach in that it incorporates fixed-length data packets, whereas SC simulation is normally limited to systems with exponentially distributed interevent times. Using this model, we demonstrate the effectiveness of ordinal-optimization techniques, which provide a remarkably good ranking of admission-control policies after relatively short simulation runs, thereby facilitating the rapid determination of good policies. Moreover, we demonstrate that the use of crude, inaccurate analytical and simulation models can provide highly accurate policy rankings that can be used in conjunction with ordinal-optimization methods, provided that they incorporate the key aspects of system operation. C1 UNIV MARYLAND,DEPT ELECT ENGN,COLLEGE PK,MD 20742. UNIV MARYLAND,SYST RES INST,COLLEGE PK,MD 20742. RP WIESELTHIER, JE (reprint author), USN,RES LAB,DIV INFORMAT TECHNOL,WASHINGTON,DC 20375, USA. NR 29 TC 12 Z9 12 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0924-6703 J9 DISCRETE EVENT DYN S JI Discret. Event Dyn. Syst.-Theory Appl. PD APR-JUL PY 1995 VL 5 IS 2-3 BP 243 EP 280 DI 10.1007/BF01439042 PG 38 WC Automation & Control Systems; Operations Research & Management Science; Mathematics, Applied SC Automation & Control Systems; Operations Research & Management Science; Mathematics GA RG664 UT WOS:A1995RG66400008 ER PT J AU CHEN, JC WU, C AF CHEN, JC WU, C TI MAXIMUM SPECIFIC POWER OUTPUT OF A 2-STAGE ENDOREVERSIBLE COMBINED-CYCLE SO ENERGY LA English DT Article ID HEAT ENGINES AB The optimal performance of a two-stage endoreversible combined cycle is investigated for steady-state operation. The cycle efficiency at maximum specific power output equals the Curzon-Ahlborn efficiency, whereas the maximum specific power output of the cycle is, in general, smaller than that of a single-stage endoreversible cycle operating over the same temperature range. Optimization problems concerning temperatures of the working fluid and heat-transfer areas of the heat exchangers are discussed. C1 USN ACAD,DEPT ENGN MECH,ANNAPOLIS,MD 21402. RP CHEN, JC (reprint author), XIAMEN UNIV,DEPT PHYS,XIAMEN 361005,PEOPLES R CHINA. RI Chen, JC/G-4088-2010 NR 4 TC 6 Z9 7 U1 1 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 APR PY 1995 VL 20 IS 4 BP 305 EP 309 DI 10.1016/0360-5442(94)00081-D PG 5 WC Thermodynamics; Energy & Fuels SC Thermodynamics; Energy & Fuels GA QN191 UT WOS:A1995QN19100006 ER PT J AU PORCH, D AF PORCH, D TI MYOPIC GRANDEUR - THE AMBIVALENCE OF FRENCH FOREIGN-POLICY TOWARD THE FAR-EAST, 1919-1945 - DREIFORT,JE SO ENGLISH HISTORICAL REVIEW LA English DT Book Review RP PORCH, D (reprint author), USN,WAR COLL,NEWPORT,RI 02840, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU LONGMAN GROUP UK LTD PI HARLOW PA LONGMAN HOUSE, BURNT MILL, HARLOW, ESSEX, ENGLAND CM20 2JE SN 0013-8266 J9 ENGL HIST REV JI Engl. Hist. Rev. PD APR PY 1995 VL 110 IS 436 BP 535 EP 536 PG 2 WC History SC History GA QT780 UT WOS:A1995QT78000150 ER PT J AU BENNETT, BL HAGAN, RD HUEY, KA MINSON, C CAIN, D AF BENNETT, BL HAGAN, RD HUEY, KA MINSON, C CAIN, D TI COMPARISON OF 2 COOL VESTS ON HEAT-STRAIN REDUCTION WHILE WEARING A FIREFIGHTING ENSEMBLE SO EUROPEAN JOURNAL OF APPLIED PHYSIOLOGY AND OCCUPATIONAL PHYSIOLOGY LA English DT Article DE HEAT STRAIN; COOL VESTS; BODY TEMPERATURES; HEART RATE ID PHYSIOLOGICAL-RESPONSES AB This study evaluated the effectiveness of a six-pack versus a four-pack cool vest in reducing; heat strain in men dressed in firefighting ensemble, while resting and exercising in a warm/humid environment [34.4 degrees C (day bulb), 28.9 degrees C (wet bulb)]. Male volunteers (n = 12) were monitored for rectal temperature (T-re), mean skin temperature (T-sk), heart rate, and energy expenditure during three test trials: control (no cool vest), four-pack vest, and six-pack vest. The cool vests were worn under the firefighting ensemble and over Navy dungarees. The protocol consisted of two cycles of 30 min seated rest and 30 min walking on a motorized treadmill (1.12 m . s(-1), 0% grade). Tolerance time for the control trial (93 min) was significantly less than both vest trials (120 min). Throughout heat exposure, energy expenditure varied during rest and exercise. but no differences existed among all trials (P > 0.05). During the first 60 min of heat exposure, physiological responses were similar for the four-pack and six-pack vests. However, during the second 60 min of heat exposure the six-pack vest had a greater impact on reducing heat strain than the four-pack vest. Peak T-re and T-sk at the end of heat exposure for 6-pack vest [mean (SD) 38.0(0.3)degrees C and 36.8(0.7)degrees C] were significantly lower compared to four-pack [38.6(0.4)degrees C and 38.1(0.5)degrees C] and controls [38.9(0.5)degrees C and 38.4(0.5)degrees C]. Our findings suggest that the six-pack vest is more effective than the four-pack vest at reducing heat strain and improves performance of personnel wearing a firefighting ensemble. C1 USN,HLTH RES CTR,SAN DIEGO,CA 92186. GEOCENTERS INC,FT WASHINGTON,MD 20744. SAN DIEGO STATE UNIV FDN,SAN DIEGO,CA 92182. NR 22 TC 34 Z9 38 U1 1 U2 8 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0301-5548 J9 EUR J APPL PHYSIOL O JI Eur. J. Appl. Physiol. Occup. Physiol. PD APR PY 1995 VL 70 IS 4 BP 322 EP 328 DI 10.1007/BF00865029 PG 7 WC Physiology; Sport Sciences SC Physiology; Sport Sciences GA QX993 UT WOS:A1995QX99300007 PM 7649143 ER PT J AU SLINKER, SP FEDDER, JA AF SLINKER, SP FEDDER, JA TI PLASMOID FORMATION AND EVOLUTION IN A NUMERICAL-SIMULATION OF A SUBSTORM SO GEOPHYSICAL RESEARCH LETTERS LA English DT Article ID TRAVELING COMPRESSION REGIONS; GEOMAGNETIC TAIL; DISTANT MAGNETOTAIL AB Plasmoids are thought to occur as a consequence of the formation of a near-Earth neutral line during the evolution of a geomagnetic substorm. Using a 3D, global MHD simulation of the interaction of the Earth's magnetosphere with the solar wind, we initiate a substorm by a southward turning of the Interplanetary Magnetic Field (IMF) after a long period of steady northward field. A large plasmoid is formed and ejected. We show field line maps of its shape and relate its formation time to the progress of the substorm as indicated by the cross polar potential. Because of the large region of closed field in the magnetotail at the time of the substorm, this plasmoid is longer in axial dimension than is typically observed. We compare the simulation results with the type of satellite observations which have been used to argue for the existence of plasmoids or of traveling compression regions (TCRs) in the lobes or magnetosheath. The simulation predicts that plasmoid passage would result in a strong signal in the cross tail electric field. C1 DARTMOUTH COLL,DEPT PHYS & ASTRON,HANOVER,NH 03755. RP SLINKER, SP (reprint author), USN,RES LAB,DIV PLASMA PHYS,WASHINGTON,DC 20375, USA. NR 24 TC 19 Z9 19 U1 0 U2 1 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0094-8276 J9 GEOPHYS RES LETT JI Geophys. Res. Lett. PD APR 1 PY 1995 VL 22 IS 7 BP 859 EP 862 DI 10.1029/95GL00300 PG 4 WC Geosciences, Multidisciplinary SC Geology GA QR153 UT WOS:A1995QR15300030 ER PT J AU SCHLEHER, DC AF SCHLEHER, DC TI SOLVING RADAR DETECTION PROBLEMS USING SIMULATION SO IEEE AEROSPACE AND ELECTRONIC SYSTEMS MAGAZINE LA English DT Article AB Simulation is a well-known but often misunderstood method for predicting the detection range of radars. Recent advances in computer software and hardware have made simulation easier to apply and use. Users are putting increased reliance on computer simulation in lieu of more expensive test and evaluation. In this paper, a simulation example is given of a complex radar detection problem which is not solvable using conventional procedures. It is shown how this problem is easily solved using a MATLAB simulation on a personal computer (PC). RP SCHLEHER, DC (reprint author), USN,POSTGRAD SCH,MONTEREY,CA 93940, USA. NR 4 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 0885-8985 J9 IEEE AERO EL SYS MAG JI IEEE Aerosp. Electron. Syst. Mag. PD APR PY 1995 VL 10 IS 4 BP 36 EP 40 DI 10.1109/62.382259 PG 5 WC Engineering, Aerospace; Engineering, Electrical & Electronic SC Engineering GA QU291 UT WOS:A1995QU29100009 ER PT J AU PLUMTON, DL YUAN, HT KIM, TS TADDIKEN, AH LEY, V KOLLMAN, RI LAGNADO, I JOHNSON, L AF PLUMTON, DL YUAN, HT KIM, TS TADDIKEN, AH LEY, V KOLLMAN, RI LAGNADO, I JOHNSON, L TI A LOW ON-RESISTANCE, HIGH-CURRENT GAAS POWER VFET SO IEEE ELECTRON DEVICE LETTERS LA English DT Article ID SEMICONDUCTOR AB We have developed a new fabrication process for GaAs VFET's that results in excellent performance in a 10 A prototype designed for switching in low voltage synchronous rectifier applications, The new fabrication process uses a buried carbon-doped GaAs gate structure for the gate electrodes and an epitaxial overgrowth step, We have demonstrated 10 A devices with 3.5 m of gate width and 1.5 mOhm of on-resistance (specific on-resistance of 84 mu Ohm - cm(2)), The device required a 0.5 mu m channel etched between 0.5 mu m gates placing stringent requirements on the gate side wall etch profile and epitaxial doping uniformity. C1 USN,CTR COMMAND CONTROL & OCEAN SURVEILLANCE,DIV RDTE,SAN DIEGO,CA 92152. RP PLUMTON, DL (reprint author), TEXAS INSTRUMENTS INC,DALLAS,TX 75265, USA. NR 7 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 0741-3106 J9 IEEE ELECTR DEVICE L JI IEEE Electron Device Lett. PD APR PY 1995 VL 16 IS 4 BP 142 EP 144 DI 10.1109/55.372495 PG 3 WC Engineering, Electrical & Electronic SC Engineering GA QP581 UT WOS:A1995QP58100005 ER PT J AU LATZ, MI ROHR, J HOYT, J AF LATZ, MI ROHR, J HOYT, J TI A NOVEL FLOW VISUALIZATION TECHNIQUE USING BIOLUMINESCENT MARINE PLANKTON .1. LABORATORY STUDIES SO IEEE JOURNAL OF OCEANIC ENGINEERING LA English DT Note C1 SAN DIEGO STATE UNIV,DEPT MECH ENGN,SAN DIEGO,CA 92182. USN COMMAND,CTR CONTROL & OCEAN SURVEILLANCE,SAN DIEGO,CA 92152. RP LATZ, MI (reprint author), UNIV CALIF SAN DIEGO,SCRIPPS INST OCEANOG,LA JOLLA,CA 92093, USA. NR 4 TC 7 Z9 7 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 APR PY 1995 VL 20 IS 2 BP 144 EP 147 PG 4 WC Engineering, Civil; Engineering, Ocean; Engineering, Electrical & Electronic; Oceanography SC Engineering; Oceanography GA QR075 UT WOS:A1995QR07500006 ER PT J AU ROHR, J LATZ, MI HENDRICKS, E NAUEN, JC AF ROHR, J LATZ, MI HENDRICKS, E NAUEN, JC TI A NOVEL FLOW VISUALIZATION TECHNIQUE USING BIOLUMINESCENT MARINE PLANKTON .2. FIELD STUDIES SO IEEE JOURNAL OF OCEANIC ENGINEERING LA English DT Note C1 UNIV CALIF SAN DIEGO,SCRIPPS INST OCEANOG,LA JOLLA,CA 92093. RP ROHR, J (reprint author), USN COMMAND,CTR CONTROL & OCEAN SURVEILLANCE,SAN DIEGO,CA 92152, USA. 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 0364-9059 J9 IEEE J OCEANIC ENG JI IEEE J. Ocean. Eng. PD APR PY 1995 VL 20 IS 2 BP 147 EP 149 DI 10.1109/48.376679 PG 3 WC Engineering, Civil; Engineering, Ocean; Engineering, Electrical & Electronic; Oceanography SC Engineering; Oceanography GA QR075 UT WOS:A1995QR07500007 ER PT J AU HANSON, F AF HANSON, F TI CR-LISAF SLAB LASER PERFORMANCE SO IEEE JOURNAL OF QUANTUM ELECTRONICS LA English DT Article AB The performance of a hash-lamp pumped Cr3+: LiSrAlF6 multi-bounce slab laser is reported. The slab was conductively-cooled by a sapphire window which also transmitted the pump light. Laser output of 9 mJ and a slope efficiency of 0.061% were obtained although less than 15% of the total pump aperture was used. RP HANSON, F (reprint author), USN,CTR COMMAND CONTROL & OCEAN SURVEILLANCE,CODE 843,SAN DIEGO,CA 92152, USA. NR 10 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 0018-9197 J9 IEEE J QUANTUM ELECT JI IEEE J. Quantum Electron. PD APR PY 1995 VL 31 IS 4 BP 653 EP 656 DI 10.1109/3.371939 PG 4 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA QN088 UT WOS:A1995QN08800007 ER PT J AU MEYER, JR HOFFMAN, CA BARTOLI, FJ YOUNGDALE, ER RAMMOHAN, LR AF MEYER, JR HOFFMAN, CA BARTOLI, FJ YOUNGDALE, ER RAMMOHAN, LR TI MOMENTUM-SPACE RESERVOIR FOR ENHANCEMENT OF INTERSUBBAND 2ND-HARMONIC GENERATION SO IEEE JOURNAL OF QUANTUM ELECTRONICS LA English DT Article ID ASYMMETRIC QUANTUM-WELLS; 2ND-HARMONIC GENERATION; OPTICAL NONLINEARITIES; INTERVALLEY SCATTERING; INFRARED-SPECTROSCOPY; ELECTRIC-FIELD; HOT CARRIERS; GAAS; ABSORPTION; RELAXATION AB We analyze fundamental limits to the second harmonic conversion efficiency attainable from semiconductor intersubband devices employing asymmetric stepped and double quantum wells. The coupled propagation equations have been solved numerically, accounting for saturation, absorption, and optical heating. It is found that the key figure of merit is the conversion efficiency at the onset of saturation, which has a remarkably simple form depending only on the ratio of broadening time to intersubband relaxation time and on another ratio involving the optical matrix elements. We show that since there are fundamental limits to the values of these ratios, it is unlikely that conversion efficiencies exceeding approximate to 10% can be attained in devices of the type considered in the previous literature, and for surface incidence even efficiencies approaching that value will require impractically-thick active regions. While detuning from the double resonance condition is often advantageous, net improvements to the optimum performance are relatively modest. However, these limitations can be transcended by placing the subband system in contact with an optically-inactive momentum-space reservoir, which shunts the intersubband relaxation and delays saturation by refilling the depleted subband states with electrons from the reservoir. We propose a specific device based on Gamma-valley active states and L-valley reservoir states in InAs-GaSb-AlSb asymmetric double quantum wells, whose energy levels and optical matrix elements are modeled using an 8-band finite-element calculation. It is predicted that a conversion efficiency of 20% can be achieved in an active-layer thickness of less than 10 mu m. 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 48 TC 11 Z9 11 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 0018-9197 J9 IEEE J QUANTUM ELECT JI IEEE J. Quantum Electron. PD APR PY 1995 VL 31 IS 4 BP 706 EP 714 DI 10.1109/3.371946 PG 9 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA QN088 UT WOS:A1995QN08800014 ER PT J AU ESTEROWITZ, L AF ESTEROWITZ, L TI INTRODUCTION TO THE ISSUE ON TUNABLE SOLID-STATE LASERS SO IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS LA English DT Editorial Material RP ESTEROWITZ, L (reprint author), USN,RES LAB,CODE 5605,WASHINGTON,DC 20375, USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 1077-260X J9 IEEE J SEL TOP QUANT JI IEEE J. Sel. Top. Quantum Electron. PD APR PY 1995 VL 1 IS 1 BP 1 EP 1 PG 1 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA RW846 UT WOS:A1995RW84600001 ER PT J AU COOPER, DG DEXTER, JL ESMAN, RD AF COOPER, DG DEXTER, JL ESMAN, RD TI WIDELY TUNABLE POLARIZATION-STABLE FIBER LASERS SO IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS LA English DT Article ID RING LASER; LINEWIDTH AB Four different widely tunable polarization-stable lasers, each based on nonpolarization maintaining erbium-doped fiber are presented. We experimentally examine the effect of output coupling on laser performance, and compare the output power measurements with theoretical predictions. We also discuss the relative costs and construction factors of the four lasers. C1 USN, RES LAB, WASHINGTON, DC 20375 USA. RP JAYCOR, VIENNA, VA 22180 USA. NR 18 TC 28 Z9 28 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA SN 1077-260X EI 1558-4542 J9 IEEE J SEL TOP QUANT JI IEEE J. Sel. Top. Quantum Electron. PD APR PY 1995 VL 1 IS 1 BP 14 EP 21 DI 10.1109/2944.468376 PG 8 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA RW846 UT WOS:A1995RW84600003 ER PT J AU PINTO, JF ESTEROWITZ, L ROSENBLATT, GH AF PINTO, JF ESTEROWITZ, L ROSENBLATT, GH TI FREQUENCY TRIPLING OF A Q-SWITCHED CR-LISAF LASER TO THE UV REGION SO IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS LA English DT Article ID HARMONIC-GENERATION; BETA-BAB2O4 AB Frequency tripling of a Q-switched, tunable Cr:LiSAF laser to the uv wavelength region is accomplished by a mixing scheme involving second harmonic generation in lithium triborate (LBO); followed by sum frequency generation in, beta-barium berate (BBO). The generated UV output is tunable between 260 nm and 320 nm. C1 SFA INC,LANDOVER,MD 20785. RP PINTO, JF (reprint author), USN,RES LAB,CODE 5641,WASHINGTON,DC 20375, USA. NR 19 TC 13 Z9 13 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 1077-260X J9 IEEE J SEL TOP QUANT JI IEEE J. Sel. Top. Quantum Electron. PD APR PY 1995 VL 1 IS 1 BP 58 EP 61 DI 10.1109/2944.468371 PG 4 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA RW846 UT WOS:A1995RW84600008 ER PT J AU STONEMAN, RC ESTEROWITZ, L AF STONEMAN, RC ESTEROWITZ, L TI EFFICIENT 1.94-MU-M TM-YALO LASER SO IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS LA English DT Article ID OPERATION AB Laser emission from Tm:YALO is observed over the range 1.93-2.00 mu m. A model including reabsorption loss and polarization effects, predicting the output wavelength as a function of laser parameters, is used to design a Tm:YALO laser with output restricted to 1.94 mu m, without employing a tuning element. This laser is potentially useful for medical applications, owing to the strong absorption coefficient at 1.94 mu m in liquid water (twice that of the 2.02-mu m Tm:YAG laser and four times that of the 2.09-mu m Ho:YAG laser). RP STONEMAN, RC (reprint author), USN,RES LAB,CODE 5641,WASHINGTON,DC 20375, USA. NR 12 TC 93 Z9 97 U1 1 U2 9 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 1077-260X J9 IEEE J SEL TOP QUANT JI IEEE J. Sel. Top. Quantum Electron. PD APR PY 1995 VL 1 IS 1 BP 78 EP 81 DI 10.1109/2944.468368 PG 4 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA RW846 UT WOS:A1995RW84600011 ER PT J AU NAGLE, DT SANIIE, J AF NAGLE, DT SANIIE, J TI PERFORMANCE ANALYSIS OF LINEARLY COMBINED ORDER STATISTIC CFAR DETECTORS SO IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS LA English DT Article ID CLUTTER AB Linearly combined order statistic (LCOS) constant false-alarm rate (CFAR) detectors are examined for efficient and robust threshold estimation applied to exponentially distributed background observations for improved detection Two optimization philosophies have been employed to determine the weighting coefficients of the order statistics. The first method optimizes the coefficients to obtain efficient estimates of clutter referred to the censored maximum likelihood (CML) and best linear unbiased (BLU) CFAR detectors. The second optimization involves maximizing the probability of detection under Swerling II targets and is referred to as the most powerful linear (MPL) CFAR detector. The BLU-CFAR detector assumes no knowledge of the target distribution in contrast to the MPL CFAR detector which requires partial knowledge of the target distribution The design of these CFAR detectors and the probability of detection performance are mathematically analyzed for background observations having homogeneous and heterogeneous distributions wherein the trade-offs between robustness and detection performance are illustrated. C1 IIT,DEPT ELECT & COMP ENGN,ULTRASON INFORMAT PROC LAB,CHICAGO,IL 60616. RP NAGLE, DT (reprint author), USN,DIV UNDERSEA WARFARE CTR,DEPT WEAP SYST TECHNOL & ASSESSMENT,NEWPORT,RI 02841, USA. NR 19 TC 18 Z9 20 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 0018-9251 J9 IEEE T AERO ELEC SYS JI IEEE Trans. Aerosp. Electron. Syst. PD APR PY 1995 VL 31 IS 2 BP 522 EP 533 DI 10.1109/7.381903 PG 12 WC Engineering, Aerospace; Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA QW718 UT WOS:A1995QW71800003 ER PT J AU HAVLICEK, JP MCKEEMAN, JC REMAKLUS, PW AF HAVLICEK, JP MCKEEMAN, JC REMAKLUS, PW TI NETWORKS OF LOW-EARTH-ORBIT STORE-AND-FORWARD SATELLITES SO IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS LA English DT Article ID PACKET RADIO; SERVICE AB Networks of this type would provide communication between low cost geographically distributed Earth stations, and would be particularly attractive in areas where conventional terrestrial communications systems were not available. Applications of this type include data acquisition and remote process monitoring. The proposed protocol incorporates time-division multiplexing (TDM) on the downlink, slotted Aloha with collision resolution on the uplink, and an automatic repeat request (ARQ) algorithm Since the network connectivity is intermittent, analysis of networks of this type is difficult. Nevertheless, relationships among the performance parameters for a general network are deduced, and performance of three particular network configurations is studied via simulation. C1 IBM CORP,DIV TECHNOL PROD,RES TRIANGLE PK,NC 27709. VIRGINIA POLYTECH INST & STATE UNIV,BLACKSBURG,VA 24061. USN,RES LAB,WASHINGTON,DC 20375. RALPH KIRKLEY ASSOCIATES,AUSTIN,TX. RP HAVLICEK, JP (reprint author), UNIV TEXAS,DEPT ELECT & COMP ENGN,AUSTIN,TX 78712, USA. NR 11 TC 5 Z9 6 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 0018-9251 J9 IEEE T AERO ELEC SYS JI IEEE Trans. Aerosp. Electron. Syst. PD APR PY 1995 VL 31 IS 2 BP 543 EP 554 DI 10.1109/7.381905 PG 12 WC Engineering, Aerospace; Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA QW718 UT WOS:A1995QW71800005 ER PT J AU GRIEP, KR RITCEY, JA BURLINGAME, JJ AF GRIEP, KR RITCEY, JA BURLINGAME, JJ TI POLYPHASE CODES AND OPTIMAL FILTERS FOR MULTIPLE USER RANGING SO IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS LA English DT Article ID BINARY SEQUENCES; AUTOCORRELATION AB A technique is introduced to select poly-phase codes and optimal filters of a pulse compression system that have specific temporal and frequency characteristics. In the particular problem under study, multiple vehicles are assigned unique codes and receiver filters that have nearly orthogonal signatures. Narrowband users, that act as interference, are also present within the system. A code selection algorithm is used to select codes which have low autocorrelation sidelobes and low cross correlation peaks. Optimal mismatched filters are designed for these codes which minimize the peak values in the autocorrelation and the cross correlation functions. An adjustment to the filter design technique produces filters with nulls in their frequency response, in addition to having low correlation peaks. The method produces good codes and filters for a four-user system with length 34 four-phase codes. There is considerable improvement in cross and autocorrelation sidelobe levels over the matched filter case with only a slight decrease in the signal-to-noise ratio (SNR) of the system. The mismatched filter design also allows the design of frequency nulls at any frequency with arbitrary null attenuation, null width, and sidelobe level, at the cost of a slight decrease in processing gain. C1 UNIV WASHINGTON,DEPT ELECT ENGN,FT-10,SEATTLE,WA 98195. USN,CTR UNDERSEA WARFARE,DIV KEYPORT,KEYPORT,WA 98345. NR 19 TC 32 Z9 34 U1 0 U2 3 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9251 J9 IEEE T AERO ELEC SYS JI IEEE Trans. Aerosp. Electron. Syst. PD APR PY 1995 VL 31 IS 2 BP 752 EP 767 DI 10.1109/7.381922 PG 16 WC Engineering, Aerospace; Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA QW718 UT WOS:A1995QW71800023 ER PT J AU SODERSTRAND, MA DELASERNA, AE LOOMIS, HH AF SODERSTRAND, MA DELASERNA, AE LOOMIS, HH TI NEW APPROACH TO CLUSTERED LOOK-AHEAD PIPELINED IIR DIGITAL-FILTERS SO IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-ANALOG AND DIGITAL SIGNAL PROCESSING LA English DT Note AB Authors Lim and Liu recently introduced the ''minimum order augmentation'' technique for pipelining IIR digital filters which guarantees the addition of the least number of superfluous poles to obtain a stable pipelined IIR filter while maintaining a ''clustered look-ahead'' pipeline structure. Unfortunately, this minimization of the superfluous poles comes at the expense of adding additional denominator multipliers. In this paper, we introduce a ''minimum order clustered look-ahead'' that achieves the minimum number of superfluous poles possible while minimizing the total number of multipliers for a ''clustered look-ahead'' pipeline structure. We show that while our new technique does in some instances require more superfluous poles, the increase in hardware complexity with respect to incremental augmentation is lower when compared to the Lim and Liu approach. A MATLAB computer program is described which allows the design of any order pipelined IIR filter. Examples demonstrate that stable ''clustered look-ahead'' pipelined IIR filters can be designed with the minimum number of superfluous poles (as achieved by Lim and Liu), but with fewer denominator multipliers thus reducing significantly the computational complexity in many cases. Furthermore, an analytic solution to the second-order case gives a very practical approach to pipelined IIR filter design with great insight into the stability characteristics of pipelined IIR filters. C1 USN,POSTGRAD SCH,DEPT ELECT & COMP ENGN,MONTEREY,CA 93943. RP SODERSTRAND, MA (reprint author), UNIV CALIF DAVIS,DEPT ELECT & COMP ENGN,DAVIS,CA 95616, USA. NR 12 TC 10 Z9 11 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 1057-7130 J9 IEEE T CIRCUITS-II JI IEEE Trans. Circuits Syst. II-Analog Digit. Signal Process. PD APR PY 1995 VL 42 IS 4 BP 269 EP 274 DI 10.1109/82.378040 PG 6 WC Engineering, Electrical & Electronic SC Engineering GA QT392 UT WOS:A1995QT39200004 ER PT J AU THACKER, DL BEVILACQUA, RM WALTMAN, WB PAULS, TA GOMEZ, RM NEDOLUHA, GE SCHWARTZ, PR AF THACKER, DL BEVILACQUA, RM WALTMAN, WB PAULS, TA GOMEZ, RM NEDOLUHA, GE SCHWARTZ, PR TI GROUND-BASED SENSING OF WATER-VAPOR IN THE STRATOSPHERE AND MESOSPHERE SO IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT LA English DT Article; Proceedings Paper CT 1994 Conference on Precision Electromagnetic Measurements (CPEM 94) CY JUN 27-JUL 01, 1994 CL BOULDER, CO SP NIST, BOULDER LABS ID MICROWAVE AB We report on new developments of the WVMS instrument that provide extended altitude coverage (25-75 km) and precision that have not been achieved before with ground based microwave remote sensing of water vapor. This paper emphasizes the technical details of the instrument, experimental techniques, and especially accuracy and calibration issues. C1 USN,RES LAB,WASHINGTON,DC 20375. RP THACKER, DL (reprint author), INTERFEROMETR INC,VIENNA,VA 22182, USA. NR 11 TC 10 Z9 10 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9456 J9 IEEE T INSTRUM MEAS JI IEEE Trans. Instrum. Meas. PD APR PY 1995 VL 44 IS 2 BP 355 EP 359 DI 10.1109/19.377851 PG 5 WC Engineering, Electrical & Electronic; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA QV497 UT WOS:A1995QV49700075 ER PT J AU POND, JM KROWNE, CM AF POND, JM KROWNE, CM TI ON THE APPLICATION OF COMPLEX RESISTIVE BOUNDARY-CONDITIONS TO MODEL TRANSMISSION-LINES CONSISTING OF VERY THIN SUPERCONDUCTORS - REPLY SO IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES LA English DT Letter ID STRIP THICKNESS RP POND, JM (reprint author), USN,RES LAB,MICROWAVE TECHNOL BRANCH,WASHINGTON,DC 20375, USA. NR 7 TC 0 Z9 0 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9480 J9 IEEE T MICROW THEORY JI IEEE Trans. Microw. Theory Tech. PD APR PY 1995 VL 43 IS 4 BP 912 EP 914 PN 1 PG 3 WC Engineering, Electrical & Electronic SC Engineering GA QT615 UT WOS:A1995QT61500033 ER PT J AU ROSE, DV OTTINGER, PF OLSON, CL AF ROSE, DV OTTINGER, PF OLSON, CL TI TRANSPORT EFFICIENCY STUDIES FOR LIGHT-ION INERTIAL CONFINEMENT FUSION SYSTEMS USING BALLISTIC TRANSPORT WITH SOLENOIDAL LENS FOCUSING SO IEEE TRANSACTIONS ON PLASMA SCIENCE LA English DT Article ID BEAMS; DRIVER AB The proposed Laboratory Microfusion Facility (LMF) will require greater than or equal to 10 MJ of 30 MeV lithium ions to be transported and focused onto high-gain, high-yield inertial confinement fusion targets,.The light-ion LMF approach uses a multimodular system with individual ion extraction diodes as beam sources, Previous work examined the effect of time-of-flight bunching on energy transport efficiency, eta(t), under realistic constraints on diode operation, beam transport, and packing. Target design considerations suggest that the instantaneous power efficiency, Gamma(t), be maximized near peak power, Because of time-of-flight bunching, peak power occurs at the end of the power pulse for LMF designs, This work examines the effect of power efficiency tuning on eta(t) for an LMF design using ballistic transport with solenoidal lens focusing, Results indicate that tuning the power pulse to maximize Gamma(t) at about three-quarters through the pulse provides high power efficiency at the end of the pulse while still maintaining high eta(t). In addition to power efficiency tuning, effects on eta(t) from variations of the diode impedance model and the diode voltage waveform are also examined. C1 USN,RES LAB,DIV PLASMA PHYS,WASHINGTON,DC 20375. SANDIA NATL LABS,ALBUQUERQUE,NM 87185. RP ROSE, DV (reprint author), JAYCOR INC,VIENNA,VA 22182, USA. NR 16 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 0093-3813 J9 IEEE T PLASMA SCI JI IEEE Trans. Plasma Sci. PD APR PY 1995 VL 23 IS 2 BP 163 EP 170 DI 10.1109/27.376582 PG 8 WC Physics, Fluids & Plasmas SC Physics GA QT093 UT WOS:A1995QT09300008 ER PT J AU SONI, T ZEIDLER, JR KU, WH AF SONI, T ZEIDLER, JR KU, WH TI BEHAVIOR OF THE PARTIAL CORRELATION-COEFFICIENTS OF A LEAST-SQUARES LATTICE FILTER IN THE PRESENCE OF A NONSTATIONARY CHIRP INPUT SO IEEE TRANSACTIONS ON SIGNAL PROCESSING LA English DT Article ID ADAPTIVE EQUALIZATION; ALGORITHMS; PERFORMANCE; NOISE AB This paper studies the performance of the a posteriori recursive least squares lattice filter in the presence of a nonstationary chirp signal, The forward and backward partial correlation (PARCOR) coefficients for a Wiener-Hopf optimal filter are shown to be complex conjugates for the general case of a nonstationary input with constant power, Such an optimal filter is compared to a minimum mean square error based least squares lattice adaptive filter, Expressions are found for the behavior of the first stage of the adaptive filter based on the least squares algorithm, For the general nth stage, the PARCOR coefficients of the previous stages are assumed to have attained Wiener-Hopf optimal steady state, The PARCOR coefficients of such a least squares adaptive filter are compared with the optimal coefficients for such a nonstationary input. The optimal lattice filter is seen to track a chirp input without any error, and the tracking lag in such an adaptive filter is due to the least squares update procedure, The expression for the least squares based PARCOR coefficients are found to contain two terms: a decaying convergence term due to the weighted estimation procedure and a tracking component that asymptotically approaches the optimal coefficient value, The fate of convergence is seen to depend inversely on the forgetting factor. The tracking lag of the filter is derived as a function of the rate of nonstationarity and the forgetting factor, It is shown that for a given chirp rate there is a threshold adaptation constant below which the total tracking error is negligible, For forgetting factors above this threshold, the error increases nonlinearly. Further, this threshold forgetting factor decreases with increasing chirp rate, Simulations are presented to validate the analysis. C1 USN,CTR COMMAND CONTROL & OCEAN SURVEILLANCE,DIV RDT&E,SAN DIEGO,CA 92152. UNIV CALIF SAN DIEGO,DEPT ELECT & COMP ENGN,LA JOLLA,CA 92093. RP SONI, T (reprint author), NASA,AMES RES CTR,STERLING SOFTWARE INC,MOFFETT FIELD,CA 94035, USA. NR 25 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 1053-587X J9 IEEE T SIGNAL PROCES JI IEEE Trans. Signal Process. PD APR PY 1995 VL 43 IS 4 BP 852 EP 863 DI 10.1109/78.376838 PG 12 WC Engineering, Electrical & Electronic SC Engineering GA QT098 UT WOS:A1995QT09800005 ER PT J AU CREUSERE, CD MITRA, SK AF CREUSERE, CD MITRA, SK TI A SIMPLE METHOD FOR DESIGNING HIGH-QUALITY PROTOTYPE FILTERS FOR M-BAND PSEUDO QMF BANKS SO IEEE TRANSACTIONS ON SIGNAL PROCESSING LA English DT Letter ID MIRROR FILTERS AB This correspondence discusses a new method for designing the prototype filters necessary to implement M-band pseudo QMF banks, This method does not rely on the traditional nonlinear optimization used in past work but rather optimizes a single parameter on a convex error surface, consistently delivering the best equiripple filter possible while minimizing the overlapped passband distortion. C1 UNIV CALIF SANTA BARBARA,SANTA BARBARA,CA 93106. RP CREUSERE, CD (reprint author), USN,CTR AIR WARFARE,CHINA LAKE,CA, USA. NR 8 TC 90 Z9 94 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 1053-587X J9 IEEE T SIGNAL PROCES JI IEEE Trans. Signal Process. PD APR PY 1995 VL 43 IS 4 BP 1005 EP 1007 DI 10.1109/78.376856 PG 3 WC Engineering, Electrical & Electronic SC Engineering GA QT098 UT WOS:A1995QT09800022 ER PT J AU WRIGHT, ME LOWEMA, CK AF WRIGHT, ME LOWEMA, CK TI AN ORGANOMETALLIC POLYIMINE COPOLYMER PREPARED FROM (ETA(6)-1,4-BIS(CHO)C6H4)CR(CO)(3) AND 1,3-PHENYLENEDIAMINE SO INORGANICA CHIMICA ACTA LA English DT Note DE ORGANOMETALLIC POLYMERS; POLYIMINE COMPLEXES; ARENE COMPLEXES; CHROMIUM COMPLEXES; TRANSMETALATION; ORGANOTIN COMPLEXES; CRYSTAL STRUCTURES ID NONLINEAR OPTICAL POLYMERS; FERROCENE NLO-PHORES; MAIN-CHAIN; COMPLEXES; BIS(METHYLDIPHENYLPHOSPHINE)NICKEL; SYSTEMS AB The organometallic comonomer {eta(6)-1,4-bis(CHO)C6H4}Cr(CO)(3) (1) was prepared from {eta(6)-1,4-bis(Bu(3)Sn)C6H4}Cr(CO)(3) by Seyferth transmetalation and then treatment with N,N-dimethylformamide. Complex 1 was characterized by a single-crystal X-ray diffraction study: triclinic, P (1) over bar, a = 6.860(1), b = 12.649(3), c = 13.480(6) Angstrom, alpha = 111.10(3), beta = 90.30(3), gamma = 94.76(2)degrees, V = 1086.8(6) Angstrom(3), Z = 4, R = 3.93%, R(w) = 4.58%, GOF = 1.15. Complex 1 was copolymerized with 1,3-phenylenediamine to produce an organometallic-polyimine 2 (97%, T-m = 282 degrees C). The organometallic-polyimine 2 possesses a fully-conjugated organic polymer backbone. The copolymer was insoluble in common organic solvents, typical of a rigid-rod polymer. C1 USN,CTR WEAP,RES DEPT,CHINA LAKE,CA 93555. USN,DIV WEAP,CHINA LAKE,CA 93555. RP WRIGHT, ME (reprint author), UTAH STATE UNIV,DEPT CHEM & BIOCHEM,LOGAN,UT 84322, USA. NR 39 TC 16 Z9 16 U1 0 U2 1 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0020-1693 J9 INORG CHIM ACTA JI Inorg. Chim. Acta PD APR PY 1995 VL 232 IS 1-2 BP 223 EP 226 DI 10.1016/0020-1693(94)04374-5 PG 4 WC Chemistry, Inorganic & Nuclear SC Chemistry GA RA200 UT WOS:A1995RA20000035 ER PT J AU MOUSSOUROS, M FATT, MH AF MOUSSOUROS, M FATT, MH TI EFFECT OF SHEAR ON PLASTIC DENTING OF CYLINDERS SO INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES LA English DT Article AB The purpose of this paper is to study the effect of ''inplane shear'' on the damage experienced by an unstiffened circular cylindrical shell subjected to static knife loading at the middle of its length. The ends of the cylinder are assumed to be fully fixed. The material constitutive model is rigid-plastic. Only ''local'' behavior is analyzed and global effects are neglected. The methodology can be applied to earlier models as proposed by Wierzbicki and Suh and by Moussouros. Like the earlier two rigid-plastic models this analysis only obtains global quantities and can result in large nondimensional dent values prior to reaching its limits of applicability. However, it is shown that the nondimensional load increases with the geometrical characteristic ratio of radius to thickness (alh). This functional form has been obtained here for the first time and represents a novel result. The paper also shows that the present model compares well with experimental results. C1 MIT,DEPT OCEAN ENGN,CAMBRIDGE,MA 02139. RP MOUSSOUROS, M (reprint author), USN,CTR SURFACE WARFARE,DAHLGREN DIV,EXPLOS DAMAGE BRANCH R14,WHITE OAK DETACHMENT,SILVER SPRING,MD 20903, USA. NR 11 TC 6 Z9 7 U1 1 U2 2 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0020-7403 J9 INT J MECH SCI JI Int. J. Mech. Sci. PD APR PY 1995 VL 37 IS 4 BP 355 EP 371 DI 10.1016/0020-7403(94)00082-U PG 17 WC Engineering, Mechanical; Mechanics SC Engineering; Mechanics GA QW787 UT WOS:A1995QW78700002 ER PT J AU DANIELSON, DA AF DANIELSON, DA TI ANALYTICAL TRIPPING LOADS FOR STIFFENED PLATES SO INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES LA English DT Article ID AXIAL-COMPRESSION AB The subject of this paper is the buckling behavior of a rectangular plate, with parallel thin-walled stiffeners attached to one side, subjected to a combination of axial compression, lateral pressure and bending moment. The plate is modeled by the Von Karman plate equations and the stiffeners by a nonlinear beam theory recently derived. An analytical solution is obtained for the buckling load corresponding to a torsional tripping mode of the stiffeners. The effects of various boundary conditions, imperfections and residual stress are included. RP DANIELSON, DA (reprint author), USN,POSTGRAD SCH,DEPT MATH,MONTEREY,CA 93943, USA. NR 8 TC 3 Z9 3 U1 1 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0020-7683 J9 INT J SOLIDS STRUCT JI Int. J. Solids Struct. PD APR-MAY PY 1995 VL 32 IS 8-9 BP 1319 EP 1328 DI 10.1016/0020-7683(94)00196-4 PG 10 WC Mechanics SC Mechanics GA QP268 UT WOS:A1995QP26800018 ER PT J AU LOPRESTO, MD POLLACK, AF FLORENCE, J FERGUSON, RC FELDBERG, IE AF LOPRESTO, MD POLLACK, AF FLORENCE, J FERGUSON, RC FELDBERG, IE TI OPERATOR SUPPORT CONCEPTS FOR TOMAHAWK STRIKE MANAGEMENT SO JOHNS HOPKINS APL TECHNICAL DIGEST LA English DT Article AB Modeling and simulation play important roles in the exploration of future system capabilities. Plans for the next generation of Tomahawk include a strike management capability (the ability to control missiles after launch). The Laboratory has developed strike management conceptual and functional prototypes that have helped to refine system concepts and requirements, stimulate user feedback, and provide an environment for early algorithm development. The functional prototype has become a valuable tool for examining broader issues of weapon employment and has been incorporated into a distributed interactive simulation environment to help refine real-time control of precision strike weapons as system-level challenges grow in complexity. RP LOPRESTO, MD (reprint author), USN,TOMAHAWK PROGRAM,BATTLE GRP STRIKE WARFARE COORDINAT,WASHINGTON,DC, USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU JOHNS HOPKINS UNIV PI LAUREL PA APPLIED PHYSICS LABORATORY ATTN: MANAGING EDITOR JOHN HOPKINS RD, BLDG 1-E254, LAUREL, MD 20723-6099 SN 0270-5214 J9 J HOPKINS APL TECH D JI Johns Hopkins APL Tech. Dig. PD APR-JUN PY 1995 VL 16 IS 2 BP 148 EP 159 PG 12 WC Engineering, Multidisciplinary SC Engineering GA RA307 UT WOS:A1995RA30700005 ER PT J AU LEE, TF AF LEE, TF TI IMAGES OF PRECIPITATION SIGNATURES FROM DMSP SSM/T-2, SSM/I, AND OLS SO JOURNAL OF APPLIED METEOROLOGY LA English DT Article ID WATER-VAPOR PROFILES; MICROWAVE OBSERVATIONS; CLOUDS; OCEAN AB The Special Sensor Microwave Water Vapor Sounder (SSM/T-2) is a five-channel passive microwave instrument aboard recently launched spacecraft of the Defense Meteorological Satellite Program ( DMSP). Rather than address the primary purpose of the SSM/T-2, which is to retrieve atmospheric moisture, this paper examines its ability to sense precipitation as shown by images of a frontal system off the west coast of the United States. Images from the three SSM/T-2 183-GHz channels depict large regions of upper-level water vapor as evidenced by depressed brightness temperatures. Within the moist regions, even lower brightness temperatures at 183 GHz mark embedded precipitation due to volume scattering by precipitation-sized ice particles. Images of the SSM/T-2 channels at 150 and 92 GHz show ice-phase precipitation marked by low brightness temperatures and, over the ocean, low-level clouds and water vapor, both marked by warming with respect to the radiometrically cold background. This paper compares images of precipitation from the SSM/T-2 with a coincident visible image from the DMSP Operational Line Scanner (OLS) sensor and passive microwave images from the DMSP Special Sensor Microwave/Imager (SSM/I). The discussion emphasizes potential applications to operational workstation users who are increasingly able to produce real-time SSM/T-2 images by processing direct readout telemetry. The ability to produce useful images from the 92-, 150-, and 183-GHz microwave frequencies will increase substantially when the new DMSP Special Sensor Microwave/Imager Sounder (SSM/IS) replaces the SSM/I, the SSM/T-1 (for temperature sounding), and SSM/T-2 sensors later this decade. RP LEE, TF (reprint author), USN,RES LAB,DIV MARINE METEOROL,7 GRACE HOPPER AVE,MONTEREY,CA 93943, USA. NR 16 TC 3 Z9 3 U1 1 U2 3 PU AMER METEOROLOGICAL SOC PI BOSTON PA 45 BEACON ST, BOSTON, MA 02108-3693 SN 0894-8763 J9 J APPL METEOROL JI J. Appl. Meteorol. PD APR PY 1995 VL 34 IS 4 BP 788 EP 793 DI 10.1175/1520-0450(1995)034<0788:IOPSFD>2.0.CO;2 PG 6 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA QP501 UT WOS:A1995QP50100004 ER PT J AU JENSEN, KL ZAIDMAN, EG AF JENSEN, KL ZAIDMAN, EG TI ANALYTIC EXPRESSIONS FOR EMISSION IN SHARP FIELD EMITTER DIODES SO JOURNAL OF APPLIED PHYSICS LA English DT Note ID SIMULATION RP JENSEN, KL (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. RI Jensen, Kevin/I-1269-2015 OI Jensen, Kevin/0000-0001-8644-1680 NR 16 TC 4 Z9 4 U1 0 U2 4 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD APR 1 PY 1995 VL 77 IS 7 BP 3569 EP 3571 DI 10.1063/1.358591 PG 3 WC Physics, Applied SC Physics GA QQ609 UT WOS:A1995QQ60900106 ER PT J AU KOCH, WH HENRIKSON, E EISENSTADT, E CEBULA, TA AF KOCH, WH HENRIKSON, E EISENSTADT, E CEBULA, TA TI SALMONELLA-TYPHIMURIUM LT7 AND LT2 STRAINS CARRYING THE IMP OPERON ON COLIA SO JOURNAL OF BACTERIOLOGY LA English DT Note ID UV PROTECTION; PLASMIDS; MUTATION; MUTAGENESIS AB The imp operon is carried on a transmissible plasmid, Colla, in original isolates of Salmonella typhimurium LT7. LT2 strain recipients of F' factors from LT7 strains harboring Colla can acquire Colla and imp under nonselective conditions. Thus, S. typhimurium LT2 strains that have received plasmids by conjugal transfer from LT7 strains might be inadvertently harboring Coll factors. C1 OFF NAVAL RES,DIV BIOL SCI & TECHNOL,ARLINGTON,VA 22217. US FDA,MOLEC BIOL BRANCH,WASHINGTON,DC 20204. NR 25 TC 3 Z9 3 U1 0 U2 0 PU AMER SOC MICROBIOLOGY PI WASHINGTON PA 1325 MASSACHUSETTS AVENUE, NW, WASHINGTON, DC 20005-4171 SN 0021-9193 J9 J BACTERIOL JI J. Bacteriol. PD APR PY 1995 VL 177 IS 7 BP 1903 EP 1905 PG 3 WC Microbiology SC Microbiology GA QP810 UT WOS:A1995QP81000038 PM 7896721 ER PT J AU ANACHI, RB BANSAL, M EASWARAN, KRK NAMBOODRI, K GABER, BP AF ANACHI, RB BANSAL, M EASWARAN, KRK NAMBOODRI, K GABER, BP TI MOLECULAR MODELING STUDIES ON AMPHOTERICIN-B AND ITS COMPLEX WITH PHOSPHOLIPID SO JOURNAL OF BIOMOLECULAR STRUCTURE & DYNAMICS LA English DT Article ID HYDROGEN-BONDED CRYSTALS; CONSISTENT FORCE-FIELD; AGGREGATION; CHANNELS AB Molecular dynamics simulation studies on polyene antifungal antibiotic amphotericin B, its head-to-tail dimeric structure and lipid - amphotericin B complex demonstrate interesting features of the flexibilities within the molecule and define the optimal interactions for the formation of a stable dimeric structure and complex with phospholipid. C1 INDIAN INST SCI,MOLEC BIOPHYS UNIT,BANGALORE 560012,KARNATAKA,INDIA. USN,RES LAB,MOLEC INTERFACIAL INTERACT LAB,WASHINGTON,DC 20375. NR 15 TC 14 Z9 14 U1 8 U2 8 PU ADENINE PRESS INC PI GUILDERLAND PA PO BOX 355/340, GUILDERLAND, NY 12084 SN 0739-1102 J9 J BIOMOL STRUCT DYN JI J. Biomol. Struct. Dyn. PD APR PY 1995 VL 12 IS 5 BP 957 EP 970 PG 14 WC Biochemistry & Molecular Biology; Biophysics SC Biochemistry & Molecular Biology; Biophysics GA QZ728 UT WOS:A1995QZ72800002 PM 7626246 ER PT J AU KROES, GJ SNIJDERS, JG MOWREY, RC AF KROES, GJ SNIJDERS, JG MOWREY, RC TI PERFORMANCE OF A FULLY CLOSE-COUPLED WAVE-PACKET METHOD FOR THE H-2+LIF(001) MODEL PROBLEM SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID DEPENDENT SCHRODINGER-EQUATION; MOLECULE-SURFACE SCATTERING; FAST FOURIER-TRANSFORM; REACTIVE SCATTERING; QUANTUM DYNAMICS; ABSORBING POTENTIALS; DISSOCIATIVE ADSORPTION; INTERACTION PICTURE; ATOM SCATTERING; SYSTEMS C1 USN,RES LAB,DIV CHEM,WASHINGTON,DC 20375. RP KROES, GJ (reprint author), VRIJE UNIV AMSTERDAM,DE BOELELAAN 1083,1081 HV AMSTERDAM,NETHERLANDS. NR 89 TC 36 Z9 36 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 APR 1 PY 1995 VL 102 IS 13 BP 5512 EP 5524 DI 10.1063/1.469281 PG 13 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA QP515 UT WOS:A1995QP51500046 ER PT J AU TWOHY, CH DURKEE, PA HUEBERT, BJ CHARLSON, RJ AF TWOHY, CH DURKEE, PA HUEBERT, BJ CHARLSON, RJ TI EFFECTS OF AEROSOL-PARTICLES ON THE MICROPHYSICS OF COASTAL STRATIFORM CLOUDS SO JOURNAL OF CLIMATE LA English DT Article ID CONDENSATION NUCLEI; CLIMATE CHANGE; ALBEDO; RADIATION; POLLUTION; ATLANTIC; SHIPS; FIRE AB Aerosol particles can act as cloud condensation nuclei and thereby influence the number and size of droplets in clouds. Consequently, anthropogenic particles have the potential to influence global climate by increasing cloud albedo and decreasing precipitation efficiencies. Enhanced cloud reflectances associated with increases in particle number have been observed, but our understanding of these interactions has been hindered by incomplete empirical studies and models of limited scope. In this study, aerosol and droplet size distributions were measured on 13 research flights in stratiform clouds within 300 km west of the northern California coast. The chemical composition of the droplet solute was also assessed. Microphysical and chemical properties indicated that most of the clouds were influenced by pollution from the North American continent, but pristine marine clouds were sampled on one flight during westerly flow conditions. Data from this flight and another, representing a pristine and polluted environment, were compared with high-resolution satellite observations. In the polluted case, particle and droplet number concentrations decreased, mean droplet size increased, and satellite-derived reflectance at 3.7 mu m decreased with increasing distance from the northern California urban region. Relative to the unpolluted stratiform cloud, the polluted cloud had, on average, a sulfate concentration that was higher by an order of magnitude, droplet number concentrations higher by a factor of 6, droplet sizes smaller by a factor of 2, and 3.7-mu m reflectance that was higher by a factor of 2. However, no significant difference in the visible reflectance was detected between the two cases, probably a result of differences in liquid water path. C1 USN,POSTGRAD SCH,MONTEREY,CA. UNIV HAWAII,HONOLULU,HI 96822. UNIV WASHINGTON,SEATTLE,WA 98195. RP TWOHY, CH (reprint author), NATL CTR ATMOSPHER RES,POB 3000,BOULDER,CO 80307, USA. NR 55 TC 40 Z9 48 U1 1 U2 3 PU AMER METEOROLOGICAL SOC PI BOSTON PA 45 BEACON ST, BOSTON, MA 02108-3693 SN 0894-8755 J9 J CLIMATE JI J. Clim. PD APR PY 1995 VL 8 IS 4 BP 773 EP 783 DI 10.1175/1520-0442(1995)008<0773:EOAPOT>2.0.CO;2 PG 11 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA QV555 UT WOS:A1995QV55500009 ER PT J AU SCHRIER, RD FREEMAN, WR WILEY, CA MCCUTCHAN, JA AF SCHRIER, RD FREEMAN, WR WILEY, CA MCCUTCHAN, JA TI IMMUNE PREDISPOSITIONS FOR CYTOMEGALOVIRUS RETINITIS IN AIDS SO JOURNAL OF CLINICAL INVESTIGATION LA English DT Article DE HIV; HUMAN; CMV; HLA; T CELL PROLIFERATION ID ACQUIRED-IMMUNODEFICIENCY-SYNDROME; DEFICIENCY-SYNDROME; SEVERE MALARIA; INFECTION; VIRUS; TRANSPLANTATION; PROLIFERATION; LYMPHOCYTES; RECIPIENTS; DISEASE AB CMV retinitis develops in similar to 28-35% of all AIDS patients at later stages of disease, often leading to blindness, To determine whether the subset of AIDS patients who developed CMV retinitis (CMV-R) were immunologically predisposed, T cell proliferation responses to CMV were examined prospectively in an HIV infected, HLA typed, longitudinal study population, Individuals who developed CMV-R had significantly lower T cell proliferation responses to CMV, both early and late in disease, compared to CD4 matched controls who have not developed CMV-R, Since HLA proteins influence T-cell recognition, phenotypes of 21 CMV-R patients were examined to determine whether certain HLA alleles were associated with low immune response and predisposed AIDS patients to CMV-R, HLA DR7 and B44 were at increased (nearly twice the expected) frequency in those with CMV-R, The combined association of either B44, 51 or DR7 with CMV-R was highly significant (P=.008, relative risk of CMV-R=15) with correction for multiple comparisons, Low immune responses were twice as frequent in those with (61%) compared to those without (30%) predisposing alleles, Thus, AIDS patients with immunogenetically related hyporesponsiveness to CMV antigens may be at increased risk of retinitis. C1 UNIV CALIF SAN DIEGO,DEPT OPHTHALMOL,LA JOLLA,CA 92093. UNIV CALIF SAN DIEGO,DEPT MED,LA JOLLA,CA 92093. UNIV PITTSBURGH,DEPT PATHOL,PITTSBURGH,PA 15213. UNIV CALIF SAN DIEGO,HIV NEUROBEHAV RES CTR,SAN DIEGO,CA 92093. USN HOSP,SAN DIEGO,CA 92093. VET ADM MED CTR,SAN DIEGO,CA 92093. RP SCHRIER, RD (reprint author), UNIV CALIF SAN DIEGO,DEPT PATHOL,MC 8416,LA JOLLA,CA 92093, USA. FU CSAP SAMHSA HHS [SP50 MH 45294]; NEI NIH HHS [R01-EY07366]; NIMH NIH HHS [R01-MH46790] NR 33 TC 63 Z9 64 U1 0 U2 0 PU ROCKEFELLER UNIV PRESS PI NEW YORK PA 222 E 70TH STREET, NEW YORK, NY 10021 SN 0021-9738 J9 J CLIN INVEST JI J. Clin. Invest. PD APR PY 1995 VL 95 IS 4 BP 1741 EP 1746 DI 10.1172/JCI117851 PG 6 WC Medicine, Research & Experimental SC Research & Experimental Medicine GA QQ596 UT WOS:A1995QQ59600042 PM 7706482 ER PT J AU KENNEDY, TA GLASER, ER FREITAS, JA CARLOS, WE KHAN, MA WICKENDEN, DK AF KENNEDY, TA GLASER, ER FREITAS, JA CARLOS, WE KHAN, MA WICKENDEN, DK TI NATIVE DEFECTS AND DOPANTS IN GAN STUDIED THROUGH PHOTOLUMINESCENCE AND OPTICALLY DETECTED MAGNETIC-RESONANCE SO JOURNAL OF ELECTRONIC MATERIALS LA English DT Article DE ACCEPTORS; DONORS; ENERGY LEVELS; GAN; MG DOPED; OPTICALLY DETECTED MAGNETIC RESONANCE (ODMR); PHOTOLUMINESCENCE (PL) ID LUMINESCENCE; GROWTH; LAYERS; FILMS AB Native defects and dopants in GaN grown by organometallic chemical vapor deposition have been studied with photoluminescence and optically detected magnetic resonance. For undoped samples, the combined results indicate the presence of residual shallow donors and accepters and deep donors. A model for the capture and recombination among these defects is developed. For Mg-doped samples, the experiments reveal shallow and perturbed accepters and shallow and deep donors. Hence, shallow and deep states for the native donor or donors appear in all samples. The Mg-acceptor is perturbed from its effective-mass state by nearby point defects. C1 APA OPT INC,BLAINE,MN 55434. JOHNS HOPKINS UNIV,APPL PHYS LAB,LAUREL,MD 20723. SFA INC,LANDOVER,MD 20785. RP KENNEDY, TA (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 19 TC 24 Z9 24 U1 0 U2 5 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 0361-5235 J9 J ELECTRON MATER JI J. Electron. Mater. PD APR PY 1995 VL 24 IS 4 BP 219 EP 223 DI 10.1007/BF02659678 PG 5 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary; Physics, Applied SC Engineering; Materials Science; Physics GA QR224 UT WOS:A1995QR22400003 ER PT J AU DOVERSPIKE, K ROWLAND, LB GASKILL, DK FREITAS, JA AF DOVERSPIKE, K ROWLAND, LB GASKILL, DK FREITAS, JA TI THE EFFECT OF GAN AND ALN BUFFER LAYERS ON GAN FILM PROPERTIES GROWN ON BOTH C-PLANE AND A-PLANE SAPPHIRE SO JOURNAL OF ELECTRONIC MATERIALS LA English DT Article DE A-PLANE SAPPHIRE; GAN GROWTH; ORGANOMETALLIC VAPOR PHASE EPITAXY (OMVPE) AB This paper presents a comparative study of the properties of GaN grown by organometallic vapor phase epitaxy, using both a GaN and AlN buffer layer, as a function of sapphire orientation (c-plane vs a-plane). Results are presented for varying the thickness of the buffer layer, varying the growth temperature of the GaN film, and also varying the ammonia/trimethylgallium mass flow ratio. The electron Hall mobilities of GaN films grown on an AlN buffer layer were, in general, higher compared to films grown using a GaN buffer layer. In addition, growth on a-plane sapphire resulted in higher quality films (over a wider range of buffer thicknesses) than growth on c-plane sapphire. The room temperature electron mobilities were also found to be dependent on, not only the growth temperature, but also the ammonia/trimethylgallium mass flow ratio. C1 SACHS FREEMAN ASSOCIATES INC,LANDOVER,MD 20785. RP DOVERSPIKE, K (reprint author), USN,RES LAB,ADV MAT SYNTH LAB,WASHINGTON,DC 20375, USA. RI Rowland, Larry/C-4487-2008 NR 13 TC 48 Z9 51 U1 0 U2 14 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 0361-5235 J9 J ELECTRON MATER JI J. Electron. Mater. PD APR PY 1995 VL 24 IS 4 BP 269 EP 273 DI 10.1007/BF02659686 PG 5 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary; Physics, Applied SC Engineering; Materials Science; Physics GA QR224 UT WOS:A1995QR22400011 ER PT J AU JOHNSON, NE SACCUZZO, DP LARSON, GE AF JOHNSON, NE SACCUZZO, DP LARSON, GE TI SELF-REPORTED EFFORT VERSUS ACTUAL PERFORMANCE IN INFORMATION-PROCESSING PARADIGMS SO JOURNAL OF GENERAL PSYCHOLOGY LA English DT Article ID VERBAL REPORTS; MENTAL PROCESSES; INTERNAL EVENTS; NISBETT; WILSON; INTELLIGENCE; LIMITATIONS; REFUTATION; BEM AB This study provided data supporting Ericsson and Simon's (1980) conclusion that, within the framework of human information processing, verbal reports can provide a valid and informative source of data. One hundred nine volunteer participants were tested on a battery of microcomputerized tasks. After each task, participants were given a self-report questionnaire concerning perceived difficulty and effort expended. One hundred participants returned and were randomly assigned to either an incentive or a no-incentive condition for retest. As a group, participants in the incentive condition reported expending significantly more effort than did participants who received no incentive. There was a parallel between verbal reports (metacognition) and actual performance on the more difficult task, whereas, for some participants, verbal report data proved to be a more sensitive indicator than performance on less difficult tasks. In each case, verbal data either paralleled or augmented the analysis of performance. C1 USN,CTR PERSONNEL RES & DEV,DEPT TESTING SYST,SAN DIEGO,CA. RP JOHNSON, NE (reprint author), SAN DIEGO STATE UNIV,DEPT PSYCHOL,6363 ALVARADO COURT,SUITE 103,SAN DIEGO,CA 92120, USA. NR 30 TC 7 Z9 7 U1 0 U2 4 PU HELDREF PUBLICATIONS PI WASHINGTON PA 1319 EIGHTEENTH ST NW, WASHINGTON, DC 20036-1802 SN 0022-1309 J9 J GEN PSYCHOL JI J. Gen. Psychol. PD APR PY 1995 VL 122 IS 2 BP 195 EP 210 PG 16 WC Psychology, Multidisciplinary SC Psychology GA RC715 UT WOS:A1995RC71500005 ER PT J AU MEIER, RR COX, R STRICKLAND, DJ CRAVEN, JD FRANK, LA AF MEIER, RR COX, R STRICKLAND, DJ CRAVEN, JD FRANK, LA TI INTERPRETATION OF DYNAMICS EXPLORER FAR UV IMAGES OF THE QUIET TIME THERMOSPHERE SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article ID ATOMIC OXYGEN; OI 1304-A; SOLAR EUV; DAYGLOW; MODEL; TRANSPORT; FLUX AB A selected set of far ultraviolet images of the Earth have been analyzed quantitatively to establish their validity for studying thermospheric ''weather.'' The set of images chosen for study was restricted to mostly geomagnetically quiet conditions in order to obtain a baseline understanding of the relationship between the observations and thermospheric phenomenology. The images included low to moderate solar activity levels. A new model was developed to generate global dayglow images using first principles methods. The mass spectrometer/incoherent scatter (MSIS-86) model was used to predict the thermospheric concentrations. The analyses of thermospheric images observed in the 123 to 160-nm nominal passband show that the spectral composition for observations on the projected Earth disk is dominated by O I 130.4-nm radiation (85-90%), with contributions from O I 135.6-nm and N-2 Lyman-Birge-Hopfield (LBH) bands of about 5-8% each. The synthetic images reproduce the global features of the observed images rather well. Differences between the model and the data are attributed to real atmospheric effects, such as atomic oxygen depletions which are not well reproduced by the MSIS model when geomagnetic activity is elevated. The absolute values recorded were 38-54% higher than predicted. We attribute this discrepancy to low values of the solar extreme ultraviolet irradiances used in the model. Images obtained in the 136 to 165-nm nominal passband are a factor of 2.7 greater than the model. The excess signal observed is most likely due to a long wavelength tail in the instrument sensitivity which allowed Rayleigh scattered sunlight between 180 and 250 nm to be detected. The understanding of the DE 1 images gained by this study provides the basis for future work on the global response of the thermosphere to geomagnetic forcing. C1 COMPUTAT PHYS INC,FAIRFAX,VA 22031. UNIV ALASKA,INST GEOPHYS,FAIRBANKS,AK 99775. UNIV IOWA,DEPT PHYS & ASTRON,IOWA CITY,IA 52242. RP MEIER, RR (reprint author), USN,RES LAB,EO HULBURT CTR SPACE RES,CODE 7640,4555 OVERLOOK AVE SW,WASHINGTON,DC 20375, USA. NR 37 TC 20 Z9 20 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 APR 1 PY 1995 VL 100 IS A4 BP 5777 EP 5794 DI 10.1029/94JA02679 PG 18 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QR195 UT WOS:A1995QR19500020 ER PT J AU KANG, YH LEE, CH BRUMMEL, SE NEWBALL, HH FORRESTER, J AF KANG, YH LEE, CH BRUMMEL, SE NEWBALL, HH FORRESTER, J TI EFFECTS OF ENDOTOXIN ON EXPRESSION OF VLA INTEGRINS BY HUMAN BRONCHOALVEOLAR LAVAGE MACROPHAGES SO JOURNAL OF LEUKOCYTE BIOLOGY LA English DT Article DE LIPOPOLYSACCHARIDE; MATRIX PROTEIN; RECEPTORS; BAL MONONUCLEAR CELLS ID TUMOR NECROSIS FACTOR; HUMAN MONONUCLEAR PHAGOCYTES; HUMAN-MONOCYTES; PLASMA FIBRONECTIN; CELL-ADHESION; INVITRO DIFFERENTIATION; GENE-EXPRESSION; ADHERENCE; LIPOPOLYSACCHARIDE; NEUTROPHILS AB Endotoxin (lipopolysaccharide, LPS) is known to induce inflammatory responses, such as monocyte/macrophage adherence, migration, and accumulation. Recruitment and accumulation of macrophages during infection and inflammation are regulated by integrin-mediated cell-extracellular matrix interactions. In the present report, we studied the effects of LPS on the expression of VLA-5 (alpha(5) beta(1)), VLA-3 (alpha(3) beta(1)), and VLA-5 (alpha(2) beta(1)) integrins and fibronectin (FN) by human alveolar macrophages in an attempt to understand the mechanism by which LPS regulates macrophage adhesion to matrix proteins. Bronchoalveolar lavage macrophages were treated with varying concentrations of Escherichia coli LPS for different times and evaluated for expression of the integrins and FN by immunofluorescence, immunoelectron microscopy, autoradiography, and radioimmunoassay. Immunofluorescent and immunoelectron microscopic observations showed that VLA integrins were constitutively expressed on the cell surface and concentrated on the microvilli and pseudopodia of the macrophages. The effects of LPS on expression of the integrins were dose and time related. VLA-5 expression was increased after 30 min of stimulation by LPS, suggesting that LPS may induce rapid secretion of the integrin. However, incubations with LPS longer than 30 min decreased VLA-5 expression in a dose-dependent pattern. LPS also caused dose-related decreases in the expression of VLA-3 and VLA-2 integrins and increases of intracellular FN 24 h after stimulation. The results suggest that a prolonged exposure to LPS may impede VLA integrin-mediated migration and result in local accumulation of macrophages in the lung. C1 NATL NAVAL MED CTR, BETHESDA, MD USA. RP KANG, YH (reprint author), USN, MED RES INST, SEPT SHOCK RES PROGRAM, BETHESDA, MD 20889 USA. NR 56 TC 17 Z9 17 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 APR PY 1995 VL 57 IS 4 BP 624 EP 634 PG 11 WC Cell Biology; Hematology; Immunology SC Cell Biology; Hematology; Immunology GA QU085 UT WOS:A1995QU08500017 PM 7722420 ER PT J AU WU, CCM MCKINNEY, KR RICE, RW AF WU, CCM MCKINNEY, KR RICE, RW TI ZIGZAG CRACK-PROPAGATION IN MGAL2O4 CRYSTALS SO JOURNAL OF MATERIALS SCIENCE LETTERS LA English DT Article RP WU, CCM (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 13 TC 7 Z9 7 U1 2 U2 3 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 APR 1 PY 1995 VL 14 IS 7 BP 474 EP 477 DI 10.1007/BF00665906 PG 4 WC Materials Science, Multidisciplinary SC Materials Science GA QT261 UT WOS:A1995QT26100006 ER PT J AU MANSOUR, NS MIKHAIL, EM ELMASRY, NA SABRY, AG MOHAREB, EW AF MANSOUR, NS MIKHAIL, EM ELMASRY, NA SABRY, AG MOHAREB, EW TI BIOCHEMICAL-CHARACTERIZATION OF HUMAN ISOLATES OF BLASTOCYSTIS-HOMINIS SO JOURNAL OF MEDICAL MICROBIOLOGY LA English DT Article ID AMEBAS AB SDS-PAGE and iso-enzyme analysis of 11 human isolates of Blastocystis hominis revealed at least two variants with different polypeptide patterns and two zymodemes, respectively. This is the first iso-enzyme and the second protein analysis to indicate strain differences in B. hominis. RP MANSOUR, NS (reprint author), USN,MED RES UNIT 3,RES PUBLICAT BRANCH,PSC 452 BOX 5000,CODE 101F,CAIRO,EGYPT. NR 19 TC 25 Z9 28 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 0022-2615 J9 J MED MICROBIOL JI J. Med. Microbiol. PD APR PY 1995 VL 42 IS 4 BP 304 EP 307 PG 4 WC Microbiology SC Microbiology GA QP910 UT WOS:A1995QP91000013 PM 7707340 ER PT J AU PORTER, KR ANTHONY, RL SOLIHIN, A HAYES, CG AF PORTER, KR ANTHONY, RL SOLIHIN, A HAYES, CG TI MAPPING OF A HUMAN T-LYMPHOTROPIC VIRUS TYPE-I GAG PROTEIN EPITOPE THAT CROSS-REACTS WITH ANTI-PLASMODIUM FALCIPARUM ANTIBODIES SO JOURNAL OF MEDICAL VIROLOGY LA English DT Article DE HTLV-I; ANTI-PLASMODIUM FALCIPARUM ANTIBODIES; CROSS-REACTING MALARIA ANTIBODIES ID PAPUA-NEW-GUINEA; INFECTION; GENE AB Studies in Palawan, Philippines, and Irian Jaya, Indonesia, showed that indeterminate human T-lymphotropic virus type I (HTLV-I) Western blot immunoreactivity is due to cross-reacting anti-Plasmodium falciparum antibodies. To further define this immunoreactivity, mapping studies were conducted using the HTLV-I pig protein to identify the precise epitope that reacts with these antibodies. Anti-P. falciparum antibody-positive sera from Palawan, Philippines, and Irian Jaya, Indonesia, were studied using overlapping synthetic peptides. Immunoreactivity was localized to residues 108-120 of pig. Further analysis of the sera with 5 biotinylated synthetic peptides showed that the cross-reactive epitope consists of the sequence PDSDPQI (amino acid residues 110-116), which was shown to be homologous to a 7 amino acid sequence on the Exp-1 protein of the P. falciparum blood stage parasite. This is the first study that identifies a specific HTLV-I protein epitope that cross-reacts with malaria antibodies. (C) 1995 Wiley-Liss, Inc. C1 USN,MED RES INST,DEPT INFECT DIS,VIRAL & RICKETTSIAL DIS PROGRAM,BETHESDA,MD. USN,MED RES UNIT 2,DEPT VIROL,JAKARTA,INDONESIA. NR 14 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 0146-6615 J9 J MED VIROL JI J. Med. Virol. PD APR PY 1995 VL 45 IS 4 BP 469 EP 474 DI 10.1002/jmv.1890450419 PG 6 WC Virology SC Virology GA QQ263 UT WOS:A1995QQ26300018 PM 7545215 ER PT J AU MCKEOWN, DA MERZBACHER, CI AF MCKEOWN, DA MERZBACHER, CI TI RAMAN-SPECTROSCOPIC STUDIES OF BAO-GA2O3-GEO2 GLASSES SO JOURNAL OF NON-CRYSTALLINE SOLIDS LA English DT Article ID GERMANATE GLASSES; SODIUM ALUMINOSILICATE; GALLIUM; SILICA; GEO2; JOIN AB Raman spectra were collected for barium gallogermanate glasses along two compositional joins to determine relationships among glass structure, chemistry, and physical property variations. As GeO2 content decreases for both glass series, the mid-frequency envelope shifts to higher frequencies while the high-frequency features increase in intensity and shift to lower frequencies. These trends in the Raman spectra parallel those reported for binary Li, Na and K germanate glasses, and are interpreted in terms of a reduction in average ring size, as well as an average lengthening of T-O bonds. The more extreme trends for the most barium-rich glasses indicate partial depolymerization of the tetrahedral network and a concomitant increase in the number of non-bridging oxygens. There is no evidence for octahedral Ge or Ga in any of the barium gallogermanate glasses investigated in this study. The findings determined from the Raman data are consistent with earlier conclusions drawn from Ge and Ga X-ray absorption spectra. C1 HOWARD UNIV,DEPT CHEM,WASHINGTON,DC 20059. USN,RES LAB,DIV OPT SCI,WASHINGTON,DC 20375. NR 20 TC 22 Z9 24 U1 0 U2 9 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 APR PY 1995 VL 183 IS 1-2 BP 61 EP 72 DI 10.1016/0022-3093(94)00648-2 PG 12 WC Materials Science, Ceramics; Materials Science, Multidisciplinary SC Materials Science GA QQ905 UT WOS:A1995QQ90500008 ER PT J AU XIE, H WANG, WI MEYER, JR HOFFMAN, CA RAMMOHAN, LR AF XIE, H WANG, WI MEYER, JR HOFFMAN, CA RAMMOHAN, LR TI NORMAL-INCIDENCE INTERSUBBAND TRANSITIONS FOR INFRARED ELECTROOPTICAL MODULATION AND 2ND-HARMONIC GENERATION SO JOURNAL OF NONLINEAR OPTICAL PHYSICS & MATERIALS LA English DT Article ID ASYMMETRIC QUANTUM-WELLS; VALENCE-BAND DISCONTINUITY; 2ND-HARMONIC GENERATION; MU-M; SEMICONDUCTOR SUPERLATTICES; 2ND-ORDER SUSCEPTIBILITY; ORIENTATION DEPENDENCE; POPULATION-INVERSION; MULTIQUANTUM WELLS; CONDUCTION-BAND AB We have developed a fundamental theory for electro-optical and nonlinear optical processes involving intersubband transitions in conduction valleys with arbitrary effective-mass anisotropy and orientation. New classes of amplitude and phase modulators, as well as frequency converters employing L-valley interactions in GaSb/AlSb-based quantum well systems are proposed. Key advantages of these devices include operation at normal incidence (enabled by the L-valley effective-mass anisotropy and tilted growth direction with respect to the L-valley constant energy ellipsoids) and adaptability to a wide range of infrared wavelengths (as short as 1.5 mu m, made possible by the large band offsets). The electro-optic coefficients and second-order nonlinear susceptibilities derived from our modeling are larger than any measured or predicted to date for conventional Gamma-valley processes. C1 USN,RES LAB,DIV OPT SCI,WASHINGTON,DC 20375. WORCESTER POLYTECH INST,DEPT PHYS,WORCESTER,MA 01609. WORCESTER POLYTECH INST,DEPT ELECT & COMP ENGN,WORCESTER,MA 01609. RP XIE, H (reprint author), COLUMBIA UNIV,DEPT ELECT ENGN,NEW YORK,NY 10027, USA. RI Ram-Mohan, Ramdas/C-5167-2012 NR 85 TC 1 Z9 1 U1 2 U2 4 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA JOURNAL DEPT PO BOX 128 FARRER ROAD, SINGAPORE 9128, SINGAPORE SN 0218-1991 J9 J NONLINEAR OPT PHYS JI J. Nonlinear Opt. Phys. Mater. PD APR PY 1995 VL 4 IS 2 BP 337 EP 361 DI 10.1142/S021886359500015X PG 25 WC Optics; Physics, Applied SC Optics; Physics GA RM489 UT WOS:A1995RM48900006 ER PT J AU MEYER, JR AF MEYER, JR TI SEMICONDUCTOR NONLINEAROPTICS AND ELECTROOPTICS AND PHOTONICS - PREFACE SO JOURNAL OF NONLINEAR OPTICAL PHYSICS & MATERIALS LA English DT Editorial Material RP MEYER, JR (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 0 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 0218-1991 J9 J NONLINEAR OPT PHYS JI J. Nonlinear Opt. Phys. Mater. PD APR PY 1995 VL 4 IS 2 BP R5 EP R5 PG 1 WC Optics; Physics, Applied SC Optics; Physics GA RM489 UT WOS:A1995RM48900001 ER PT J AU SMOOT, NC MEYERHOFF, AA AF SMOOT, NC MEYERHOFF, AA TI TECTONIC FABRIC OF THE ATLANTIC-OCEAN FLOOR - SPECULATION VS REALITY SO JOURNAL OF PETROLEUM GEOLOGY LA English DT Article ID FRACTURE-ZONE DISTRIBUTION; NORTH-ATLANTIC; MULTIBEAM SONAR; PATTERNS AB Almost all published charts of the world's ocean floors have been drawn deliberately to reflect the predictions of the plate-tectonics hypothesis. For example, the Atlantic Ocean floor is unvaryingly shown to be dominated by a sinuous, north-south mid-ocean ridge, flanked on either side by abyssal plains, cleft at its crest by a rift valley and offset at more-or-less regular 40- to 60-km intervals by east-west-striking fracture zones. However, it is now clear that as new detailed bathymetric surveys are being completed, this oversimplified portrayal of the Atlantic Basin is largely wrong. Thousands of bathymetric features present, many of them major, are wholly unexplained by plate tectonics. Others, predicted by plate tectonics, are totally absent. We show, on the basis of specific examples based on real data from the North Atlantic Ocean, that the real bathymetry and the real tectonic fabric are very different from the bathymetry and tectonic fabric portrayed (but rarely documented) in plate-tectonics publications. A new hypothesis is needed to explain the origin of the real bathymetry and tectonic fabric of the deep oceans. Such a hypothesis could very well provide clues for future petroleum and other mineral exploration along the continental margins. RP SMOOT, NC (reprint author), USN,OCEANOG OFF,DIV SEAFLOOR DATA BASES,BAY ST LOUIS,MS 39522, USA. NR 31 TC 7 Z9 7 U1 0 U2 2 PU SCIENTIFIC PRESS LTD PI BEACONSFIELD PA PO BOX 21, BEACONSFIELD, BUCKS, ENGLAND HP9 1NS SN 0141-6421 J9 J PETROL GEOL JI J. Pet. Geol. PD APR PY 1995 VL 18 IS 2 BP 207 EP 222 DI 10.1111/j.1747-5457.1995.tb00898.x PG 16 WC Geosciences, Multidisciplinary SC Geology GA QX880 UT WOS:A1995QX88000005 ER PT J AU COLLINS, MD MCDONALD, BE KUPERMAN, WA SIEGMANN, WL AF COLLINS, MD MCDONALD, BE KUPERMAN, WA SIEGMANN, WL TI JOVIAN ACOUSTICS AND COMET SHOEMAKER-LEVY-9 SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA LA English DT Article ID PARABOLIC-EQUATION METHOD; SOUND; PROPAGATION; JUPITER; MODEL; OCEAN; APPROXIMATION; DEPTH; FLOW C1 UNIV CALIF SAN DIEGO,SCRIPPS INST OCEANOG,LA JOLLA,CA 92093. RENSSELAER POLYTECH INST,TROY,NY 12180. RP COLLINS, MD (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 55 TC 16 Z9 17 U1 1 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 APR PY 1995 VL 97 IS 4 BP 2147 EP 2158 DI 10.1121/1.412948 PG 12 WC Acoustics; Audiology & Speech-Language Pathology SC Acoustics; Audiology & Speech-Language Pathology GA QR369 UT WOS:A1995QR36900017 ER PT J AU CHANDLER, HA FEUILLADE, C SMITH, GB AF CHANDLER, HA FEUILLADE, C SMITH, GB TI SECTOR-FOCUSED PROCESSING FOR STABILIZED RESOLUTION OF MULTIPLE ACOUSTIC SOURCES SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA LA English DT Article ID MATCHED-FIELD LOCALIZATION; WATER PACIFIC ENVIRONMENT; SHALLOW-WATER; DEPTH ESTIMATION; WAVE-GUIDES; VERTICAL ARRAY; NORMAL-MODES; MISMATCH; SENSITIVITY; PERFORMANCE RP CHANDLER, HA (reprint author), USN,RES LAB,BAY ST LOUIS,MS 39529, USA. NR 40 TC 4 Z9 7 U1 1 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 APR PY 1995 VL 97 IS 4 BP 2159 EP 2172 DI 10.1121/1.412007 PG 14 WC Acoustics; Audiology & Speech-Language Pathology SC Acoustics; Audiology & Speech-Language Pathology GA QR369 UT WOS:A1995QR36900018 ER PT J AU NORTON, GV NOVARINI, JC KEIFFER, RS AF NORTON, GV NOVARINI, JC KEIFFER, RS TI COUPLING SCATTERING FROM THE SEA-SURFACE TO A ONE-WAY MARCHING PROPAGATION MODEL VIA CONFORMAL MAPPING - VALIDATION SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA LA English DT Article ID PARABOLIC WAVE-EQUATION; ACOUSTIC SCATTERING C1 PLANNING SYST INC,SLIDELL,LA 70458. RP NORTON, GV (reprint author), USN,RES LAB,BAY ST LOUIS,MS 39529, USA. NR 13 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 APR PY 1995 VL 97 IS 4 BP 2173 EP 2180 DI 10.1121/1.412008 PG 8 WC Acoustics; Audiology & Speech-Language Pathology SC Acoustics; Audiology & Speech-Language Pathology GA QR369 UT WOS:A1995QR36900019 ER PT J AU GABRIELSON, TB GARDNER, DL GARRETT, SL AF GABRIELSON, TB GARDNER, DL GARRETT, SL TI A SIMPLE NEUTRALLY BUOYANT SENSOR FOR DIRECT MEASUREMENT OF PARTICLE-VELOCITY AND INTENSITY IN WATER SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA LA English DT Article ID RADIATION; PRESSURE; SPHERE C1 NOAA,PACIFIC MARINE ENVIRONM LAB,EDD,SEATTLE,WA 98115. USN,POSTGRAD SCH,DEPT PHYS,MONTEREY,CA 93943. RP GABRIELSON, TB (reprint author), NAWC,DIV AIRCRAFT,CODE 45544,WARMINSTER,PA 18974, USA. NR 42 TC 28 Z9 33 U1 0 U2 6 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 APR PY 1995 VL 97 IS 4 BP 2227 EP 2237 DI 10.1121/1.411948 PG 11 WC Acoustics; Audiology & Speech-Language Pathology SC Acoustics; Audiology & Speech-Language Pathology GA QR369 UT WOS:A1995QR36900025 ER PT J AU REIDY, RF SWIDER, KE AF REIDY, RF SWIDER, KE TI DETERMINATION OF THE CERIUM OXIDATION-STATE IN CERIUM VANADATE SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY LA English DT Note AB Use of low-quality fuels in gas turbines can lead to vanadium hot corrosion of stabilized-zirconia turbine blade coatings, The stabilizing oxide reacts with V2O5 in the melt, forming a vanadate, thus removing the stabilizer from the zirconia, To better understand the vanadation reaction of one such oxide, CeO2, we have employed X-ray absorption spectroscopy to determine the oxidation state of the resulting vanadate, CeVO4. A comparison of the cerium vanadate X-ray absorption spectra with Ce4+ and Ce3+ standards has established that the cerium valence in this compound is 3(+), This result indicates that cerium is reduced during CeVO4 formation and suggests that the vanadium reactant remains in the 5(+) oxidation state. RP REIDY, RF (reprint author), USN,RES LAB,CODE 6170,WASHINGTON,DC 20375, USA. NR 10 TC 30 Z9 30 U1 0 U2 10 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 APR PY 1995 VL 78 IS 4 BP 1121 EP 1122 DI 10.1111/j.1151-2916.1995.tb08453.x PG 2 WC Materials Science, Ceramics SC Materials Science GA QT907 UT WOS:A1995QT90700050 ER PT J AU LI, FY BAINUM, PM CREAMER, NG FISHER, S TENEZA, NC AF LI, FY BAINUM, PM CREAMER, NG FISHER, S TENEZA, NC TI 3-AXIS NEAR-MINIMUM-TIME MANEUVERS OF RESHAPE - NUMERICAL AND EXPERIMENTAL RESULTS SO JOURNAL OF THE ASTRONAUTICAL SCIENCES LA English DT Article ID LARGE-ANGLE MANEUVERS; FLEXIBLE SPACECRAFT; RIGID SPACECRAFT; REORIENTATION AB Numerical and experimental results of the minimum-time and near-minimum-time maneuvers of a rigid structure are presented. A numerical algorithm based on the quasilinearization method with time shortening strategy and a shooting method has been developed to obtain the open-loop solution of the time-optimal control problem. The experiment is performed on the Naval Research Laboratory's Reconfigurable Spacecraft Host for Attitude and Pointing Experiments (RESHAPE) three-axis maneuver facility. In the experiment, this open-loop control solution provides the ''feedforward'' control command and state trajectories which the system is required to follow. A second loop, a state-error feedback control loop, is then designed to add guaranteed stability to the system, so that small disturbances during the maneuver and post-maneuver-error can be damped out. Numerical and experimental results are presented to illustrate the success of this method. C1 SWALES & ASSOCIATES INC,BELTSVILLE,MD 20705. USN,RES LAB,WASHINGTON,DC 20375. RP LI, FY (reprint author), HOWARD UNIV,DEPT MECH ENGN,WASHINGTON,DC 20059, USA. NR 15 TC 4 Z9 5 U1 0 U2 2 PU AMER ASTRONAUTICAL SOC PI SPRINGFIELD PA 6352 ROLLING MILL PLACE SUITE 102, SPRINGFIELD, VA 22152 SN 0021-9142 J9 J ASTRONAUT SCI JI J. Astronaut. Sci. PD APR-JUN PY 1995 VL 43 IS 2 BP 161 EP 178 PG 18 WC Engineering, Aerospace SC Engineering GA TA400 UT WOS:A1995TA40000004 ER PT J AU REIDY, RF JONES, RL AF REIDY, RF JONES, RL TI THERMOGRAVIMETRIC ANALYSIS OF THE REACTION OF CEO2 WITH THE NAVO3-SO3 SYSTEM SO JOURNAL OF THE ELECTROCHEMICAL SOCIETY LA English DT Article ID HOT CORROSION; VANADIUM; OXIDES; SOLUBILITIES; SODIUM; FUELS; MELTS AB A thermogravimetric analysis (TGA)/SO3 equilibrium technique was used to study the reaction of CeO2 at 1073 K with NaVO3 in equilibrium with SO3 over the partial pressure range of 10(-7) to 10(-3) atm in air. The CeO2 was inert to chemical reaction for SO3 partial pressures up to 3 x 10(-6) atm, where reaction of CeO2 with the V2O5 component of the melt commenced with CeVO4 being produced. Thermodynamic calculations from the TGA/SO3 data are consistent with a standard Gibbs energy of formation for CeVO4 at 1073 K of about - 1445 kJ/mol, and an activity coefficient for V2O5 in the melt of about 0.01. The results are discussed in terms of vanadate-sulfate melt thermochemistry and earlier findings in the field. RP REIDY, RF (reprint author), USN,RES LAB,DIV CHEM,WASHINGTON,DC 20375, USA. NR 19 TC 2 Z9 2 U1 0 U2 3 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 10 SOUTH MAIN STREET, PENNINGTON, NJ 08534 SN 0013-4651 J9 J ELECTROCHEM SOC JI J. Electrochem. Soc. PD APR PY 1995 VL 142 IS 4 BP 1353 EP 1357 DI 10.1149/1.2044177 PG 5 WC Electrochemistry; Materials Science, Coatings & Films SC Electrochemistry; Materials Science GA QT029 UT WOS:A1995QT02900062 ER PT J AU VANKEUREN, D AF VANKEUREN, D TI THE VICTORIAN INTERPRETATION OF RACIAL CONFLICT - THE MAORI, THE BRITISH, AND THE NEW-ZEALAND WARS - BELICH,J SO JOURNAL OF THE HISTORY OF THE BEHAVIORAL SCIENCES LA English DT Book Review RP VANKEUREN, D (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU CLINICAL PSYCHOLOGY PUBL CO PI BRANDON PA 4 CONANT SQUARE, BRANDON, VT 05733 SN 0022-5061 J9 J HIST BEHAV SCI JI J. Hist. Behav. Sci. PD APR PY 1995 VL 31 IS 2 BP 169 EP 171 PG 3 WC History Of Social Sciences SC Social Sciences - Other Topics GA RC970 UT WOS:A1995RC97000011 ER PT J AU ELSON, JM AF ELSON, JM TI MULTILAYER-COATED OPTICS - GUIDED-WAVE COUPLING AND SCATTERING BY MEANS OF INTERFACE RANDOM ROUGHNESS SO JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION LA English DT Article ID LIGHT-SCATTERING; GRATINGS; SURFACES AB For plane-wave light incident upon multilayer optical components, we use first-order perturbation theory to calculate two effects of interface roughness: (1) angle-resolved scattering and (2) guided-made coupling. The interface roughness, which is assumed to be a random variable having root-mean-square roughness much less than the incident wavelength, is the perturbation parameter. When guided-wave mode resonances are inherent in optical component design, we show that fractions of incident energy scattered directly and coupled into guided-wave modes are comparable. It follows that, in consideration of multilayer optics, energy coupled into guided-wave modes can be an equally important consideration, as this energy may then end up as an additional contribution to scattering and absorption. RP ELSON, JM (reprint author), USN,CTR AIR WARFARE,DIV WEAP,DIV RES & TECHNOL,CHINA LAKE,CA 93555, USA. NR 13 TC 22 Z9 23 U1 0 U2 0 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 APR PY 1995 VL 12 IS 4 BP 729 EP 742 DI 10.1364/JOSAA.12.000729 PG 14 WC Optics SC Optics GA QN506 UT WOS:A1995QN50600009 ER PT J AU VANDERSTRATEN, M KISER, WR AF VANDERSTRATEN, M KISER, WR TI PSYCHIATRIC MORBIDITY IN ADULTS WITH HYPOPITUITARISM SO JOURNAL OF THE ROYAL SOCIETY OF MEDICINE LA English DT Letter RP VANDERSTRATEN, M (reprint author), USN HOSP,DEPT FAMILY PRACTICE,2080 CHILD ST,JACKSONVILLE,FL 32214, USA. NR 2 TC 0 Z9 0 U1 0 U2 0 PU ROYAL SOC MEDICINE SERVICES LTD PI LONDON PA 1 WIMPOLE STREET, LONDON, ENGLAND W1M 8AE SN 0141-0768 J9 J ROY SOC MED JI J. R. Soc. Med. PD APR PY 1995 VL 88 IS 4 BP 238 EP 238 PG 1 WC Medicine, General & Internal SC General & Internal Medicine GA QQ925 UT WOS:A1995QQ92500021 PM 7745579 ER PT J AU FERRER, FA MCKENNA, PH AF FERRER, FA MCKENNA, PH TI CAVERNOUS HEMANGIOMA OF THE SCROTUM - A RARE BENIGN GENITAL TUMOR OF CHILDHOOD SO JOURNAL OF UROLOGY LA English DT Article DE SCROTUM; HEMANGIOMA, CAVERNOUS; ABNORMALITIES ID HISTORY AB Cavernous hemangioma is a benign congenital lesion that rarely involves the scrotum and primarily presents during childhood. We report a case of subcutaneous scrotal-perineal hemangioma in a boy initially believed to have an inguinal hernia. These lesions can be diagnostically and therapeutically challenging. Definitive treatment by en bloc excision is recommended, Special staining techniques may be required for accurate pathological diagnosis. C1 USN,MED CTR,DIV PEDIAT UROL,PORTSMOUTH,VA. NR 19 TC 13 Z9 16 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 APR PY 1995 VL 153 IS 4 BP 1262 EP 1264 DI 10.1016/S0022-5347(01)67582-7 PG 3 WC Urology & Nephrology SC Urology & Nephrology GA QL361 UT WOS:A1995QL36100068 PM 7869525 ER PT J AU BATTEGAY, M FIKES, J DIBISCEGLIE, AM WENTWORTH, PA SETTE, A CELIS, E CHING, WM GRAKOUL, A RICE, CM KUROKOHCHI, K BERZOFSKY, JA HOOFNAGLE, JH FEINSTONE, SM AKATSUKA, T AF BATTEGAY, M FIKES, J DIBISCEGLIE, AM WENTWORTH, PA SETTE, A CELIS, E CHING, WM GRAKOUL, A RICE, CM KUROKOHCHI, K BERZOFSKY, JA HOOFNAGLE, JH FEINSTONE, SM AKATSUKA, T TI PATIENTS WITH CHRONIC HEPATITIS-C HAVE CIRCULATING CYTOTOXIC T-CELLS WHICH RECOGNIZE HEPATITIS-C VIRUS-ENCODED PEPTIDES BINDING TO HLA-A2.1 MOLECULES SO JOURNAL OF VIROLOGY LA English DT Article ID TERM FOLLOW-UP; LYMPHOCYTE-T; ANTIGENIC SITES; CTL RESPONSES; NON-A; GENOME; SEQUENCE; INTERFERON; INFECTION; INDUCTION AB Antiviral cytotoxic T lymphocytes (CTL) may play a role in clearance of hepatitis C virus (HCV)-infected cells and thereby cause hepatocellular injury during acute and chronic HCV infection. The aim of this study was to identify HLA-A2.1-restricted HCV T-cell epitopes and to evaluate whether anti-HCV-specific CTL are present during chronic hepatitis C. Peripheral blood mononuclear cells from four HLA-A2-positive patients with chronic hepatitis C and from two individuals after recovery from HCV infection were tested against a panel of HCV-encoded peptides derived from different regions of the genome, including some peptides containing HLA-A2.1 binding moths. HLA-A2-negative patients,vith chronic hepatitis C as well as healthy HLA-A2-positive (anti-HCV-negative) donors served as controls. Peripheral blood mononuclear cells stimulated repeatedly with several HCV-encoded peptides (three in core, one in NS4B, and one in NS5B) yielded cytolytic responses. All four HLA-A2-positive patients with active infection had CTL specific for at least one of the identified epitopes, whereas two patients who had recovered from HCV infection had almost no CTL responses. Monoclonal antibody blocking experiments performed for two epitopes demonstrated a class I- and HLA-A2-restricted CTL response. CTL epitopes could partially be predicted by HLA-AZ, binding motifs and more reliably by quantitative HLA-A2.1 molecule binding assays. Most of the identified epitopes could also be produced via the endogenous pathway. Specific CTL against multiple, mostly highly conserved epitopes of HCV were detected during chronic HCV infection. This finding may be important for further investigations of the immunopathogenesis of HCV, the development of potential therapies against HCV on the basis of induction or enhancement of cellular immunity, and the design of vaccines. C1 US FDA,CTR BIOL EVALUAT & RES,DIV VIROL,HEPATITIS RES LAB,BETHESDA,MD 20892. USN,MED RES INST,BETHESDA,MD. NIDDKD,LIVER DIS SECT,BETHESDA,MD. NCI,MOLEC IMMUNOGENET & VACCINE RES SECT,BETHESDA,MD. CYTEL CORP,SAN DIEGO,CA. WASHINGTON UNIV,SCH MED,DEPT MOLEC MICROBIOL,ST LOUIS,MO. RI Yang, Chen/G-1379-2010 FU NCI NIH HHS [CA57973] NR 68 TC 199 Z9 203 U1 0 U2 1 PU AMER SOC MICROBIOLOGY PI WASHINGTON PA 1325 MASSACHUSETTS AVENUE, NW, WASHINGTON, DC 20005-4171 SN 0022-538X J9 J VIROL JI J. Virol. PD APR PY 1995 VL 69 IS 4 BP 2462 EP 2470 PG 9 WC Virology SC Virology GA QL683 UT WOS:A1995QL68300059 PM 7884894 ER PT J AU SASSLER, LCDRAM MCCLATCHEY, KD WOLF, GT AF SASSLER, LCDRAM MCCLATCHEY, KD WOLF, GT TI EOSINOPHILIC INFILTRATION IN ADVANCED LARYNGEAL SQUAMOUS-CELL CARCINOMA SO LARYNGOSCOPE LA English DT Article ID TUMOR-ASSOCIATED EOSINOPHILIA; CANCER AB Tumor-associated tissue eosinophilia (TATE) has been related to prognosis in epithelial cancers, including cancers at several head and neck sites. This study prospectively examined 248 patients with stage III and IV laryngeal squamous cell carcinoma to determine prevalence and potential prognostic significance of TATE. Pretreatment tumor specimens were histopathologically evaluated. Presence and degree of TATE were analyzed with regard to other tumor characteristics, patient characteristics, and outcome criteria. Median follow-up was 48 months. Eosinaphilia was found in 22.5% of specimens and was not related to tumor site, stage, patient age or sex, or treatment modality. Overall and disease-free survival rates and response to induction chemotherapy did not differ significantly with respect to TATE, This study represents the first long-term, prospective evaluation of TATE and its prognostic significance in a single head and neck site. Contrary to the findings of earlier preliminary reports, our results suggest that TATE is not a clinical useful prognostic parameter in advanced laryngeal squamous cell carcinoma. C1 UNIV MICHIGAN,MED CTR,DEPT OTOLARYNGOL HEAD & NECK SURG,ANN ARBOR,MI 48109. UNIV MICHIGAN,DEPT PATHOL,ANN ARBOR,MI 48109. USN,MED CTR,DEPT OTOLARYNGOL HEAD & NECK SURG,PORTSMOUTH,VA. VET ADM COOPERAT STUDY PROGRAMS COORDINATING CTR,HINES,IL. NR 16 TC 16 Z9 16 U1 0 U2 0 PU LARYNGOSCOPE CO PI ST LOUIS PA 10 S BROADWAY 14TH FLOOR, ST LOUIS, MO 63102-1741 SN 0023-852X J9 LARYNGOSCOPE JI Laryngoscope PD APR PY 1995 VL 105 IS 4 BP 413 EP 416 PN 1 PG 4 WC Medicine, Research & Experimental; Otorhinolaryngology SC Research & Experimental Medicine; Otorhinolaryngology GA QQ337 UT WOS:A1995QQ33700014 ER PT J AU RIDGWAY, S KAMOLNICK, T REDDY, M CURRY, C TARPLEY, RJ AF RIDGWAY, S KAMOLNICK, T REDDY, M CURRY, C TARPLEY, RJ TI ORPHAN-INDUCED LACTATION IN TURSIOPS AND ANALYSIS OF COLLECTED MILK SO MARINE MAMMAL SCIENCE LA English DT Article DE BOTTLE-NOSED DOLPHIN; TURSIOPS TRUNCATUS; MILK; LACTATION; RELACTATION; INDUCED LACTATION; NURSING; ORPHAN ID TRUNCATUS AB Two non-lactating, non-gravid female bottlenose dolphins, Tursiops truncatus, (SLA, age 32 yr and TOD, age 34 yr) began lactating within one week after being housed with a 6.5- and 6.75-month-old orphaned calf, respectively. Cooperative swimming and nursing behaviors were quickly evident in both cow/ calf pairs. During the first 2.5 mo a milk substitute, eventually in combination with some whole fish, was used to supplement nursing in both carves. After this initial period, supplemental feeding was discontinued. SLA then became her adopted calfs sole source of nutrition for the next 5 mo, followed by another 6 mo during which the calf shifted to a predominantly fish diet with occasional nursing. TOD's orphan also continued to nurse beyond the 2.5-mo supplementation period and began voluntarily accepting small quantities of fish; suckling continued over the next year while fish consumption increased. Using a modified human breast pump, trainers collected milk at intervals from the adult dolphins throughout the lactation period. The first milk collected from TOD (day 8 after housing with calf) and SLA (day 12 with her calf) contained 6.0% and 10.3% fat, respectively. On day 68 TOD's milk fat had increased to 23.5%, and on day 37 that of SLA measured 22.5%. These later values are similar to those reported for normally lactating bottlenose dolphins. C1 TEXAS A&M UNIV,DEPT VET ANAT & PUBL HLTH,COLLEGE STN,TX 77843. RP RIDGWAY, S (reprint author), USN,CTR COMMAND CONTROL & OCEAN SURVEILLANCE,DIV BIOSCI,RDTE DIV 5107B,SAN DIEGO,CA 92152, USA. NR 35 TC 18 Z9 21 U1 1 U2 3 PU SOC MARINE MAMMALOGY PI LAWRENCE PA 1041 NEW HAMPSHIRE ST, LAWRENCE, KS 66044 SN 0824-0469 J9 MAR MAMMAL SCI JI Mar. Mamm. Sci. PD APR PY 1995 VL 11 IS 2 BP 172 EP 182 DI 10.1111/j.1748-7692.1995.tb00516.x PG 11 WC Marine & Freshwater Biology; Zoology SC Marine & Freshwater Biology; Zoology GA QX646 UT WOS:A1995QX64600005 ER PT J AU COMPTON, RH ADLER, A BLOUNT, DL MORLAN, C DINSENBACHER, A SIKORA, J ZSELECZKY, JJ SAVITSKY, D GHOSH, D BARRY, CD AF COMPTON, RH ADLER, A BLOUNT, DL MORLAN, C DINSENBACHER, A SIKORA, J ZSELECZKY, JJ SAVITSKY, D GHOSH, D BARRY, CD TI COMMENTS ON THE STRUCTURAL DESIGN OF HIGH-SPEED CRAFT - DISCUSSION SO MARINE TECHNOLOGY AND SNAME NEWS LA English DT Discussion RP COMPTON, RH (reprint author), USN ACAD,ANNAPOLIS,MD 21402, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SOC NAVAL ARCH MARINE ENG PI JERSEY CITY PA 601 PAVONIA AVENUE, JERSEY CITY, NJ 07306 SN 0025-3316 J9 MAR TECHNOL SNAME N JI Mar. Technol. Sname News PD APR PY 1995 VL 32 IS 2 BP 90 EP 99 PG 10 WC Engineering, Ocean; Oceanography SC Engineering; Oceanography GA QU154 UT WOS:A1995QU15400017 ER PT J AU KOELBEL, JG AF KOELBEL, JG TI COMMENTS ON THE STRUCTURAL DESIGN OF HIGH-SPEED CRAFT - CLOSURE SO MARINE TECHNOLOGY AND SNAME NEWS LA English DT Note RP KOELBEL, JG (reprint author), USN ACAD,ANNAPOLIS,MD 21402, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SOC NAVAL ARCH MARINE ENG PI JERSEY CITY PA 601 PAVONIA AVENUE, JERSEY CITY, NJ 07306 SN 0025-3316 J9 MAR TECHNOL SNAME N JI Mar. Technol. Sname News PD APR PY 1995 VL 32 IS 2 BP 99 EP 100 PG 2 WC Engineering, Ocean; Oceanography SC Engineering; Oceanography GA QU154 UT WOS:A1995QU15400018 ER PT J AU CHEN, CT IDZERDA, YU KAO, CC TJENG, LH LIN, HJ MEIGS, G AF CHEN, CT IDZERDA, YU KAO, CC TJENG, LH LIN, HJ MEIGS, G TI MAGNETIC-PROPERTIES OF MULTILAYERS FROM SOFT-X-RAY MAGNETIC CIRCULAR-DICHROISM SO MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY LA English DT Article; Proceedings Paper CT 5th NEC Symposium on Fundamental Approaches to New Material Phases - Spin-Dependent Phenomena in Multilayer Systems CY OCT 16-20, 1994 CL KARUIZAWA, JAPAN SP NEC CORP DE MAGNETIC MEASUREMENTS; X-RAY SPECTROSCOPY; FILM DEPOSITION ID ELECTRONIC-STRUCTURE; FE/CR/FE TRILAYERS; ULTRATHIN FILMS; ABSORPTION; NICKEL; EDGES; IRON; MONOCHROMATORS; SUPERLATTICES; SURFACES AB Soft X-ray magnetic circular dichroism (MCD) is the difference between the absorptivity or reflectivity of left and right circularly polarized soft X-rays at the magnetically interesting L(2,3) edges of 3d transition metals or the M(4,5) edges of the 4f rare earth elements. Thanks to its large absorption cross-section and strong MCD effect, this technique has become a powerful new means for probing, in an element- and site-specific manner, the magnetic properties of ultra-thin films and multilayers. Soft X-ray MCD experiments, recently conducted at the Dragon beamline, are utilized to demonstrate the key applications of this technique in magnetic thin film research. C1 USN,RES LAB,WASHINGTON,DC 20375. BROOKHAVEN NATL LAB,NATL SYNCHROTRON LIGHT SOURCE DEPT,UPTON,NY 11973. RP CHEN, CT (reprint author), AT&T BELL LABS,600 MT AVE,MURRAY HILL,NJ 07974, USA. NR 41 TC 3 Z9 3 U1 1 U2 6 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 APR PY 1995 VL 31 IS 1-2 BP 49 EP 56 DI 10.1016/0921-5107(94)08018-6 PG 8 WC Materials Science, Multidisciplinary; Physics, Condensed Matter SC Materials Science; Physics GA QV619 UT WOS:A1995QV61900008 ER PT J AU PROKES, SM AF PROKES, SM TI EFFECTS OF STRESS ON INTERDIFFUSION IN SI1-XGEX/SI SUPERLATTICES SO MATERIALS SCIENCE AND TECHNOLOGY LA English DT Article; Proceedings Paper CT 1st International Conference on Materials for Microelectronics CY OCT 17-19, 1994 CL BARCELONA, SPAIN SP Inst Mat ID MOLECULAR-BEAM EPITAXY; HETEROJUNCTION BIPOLAR-TRANSISTORS; STRAINED-LAYER SUPERLATTICES; QUANTUM-WELLS; RELAXATION; DIFFUSION; SILICON; SI AB The effects of grown in stress and applied external stress on the intel diffusion behaviour in long period Si0.7Ge0.3/Si are examined using X-ray diffraction and Raman spectroscopy. Both symmetrically and asymmetrically strained superlattices have been examined, and activation energies for interdiffusion of 3.9 and 4.6 eV respectively have been obtained. In addition, an enhanced interdiffusion was also measured when the asymmetrically strained superlattice was subjected to an external tensile stress during annealing. In both types of superlattice, enhanced interdiffusion was measured whenever the Si barrier layers experienced tensile stress during annealing. The Raman results indicate that enhanced Ge diffusion into the Si barriers occurs when these barriers are placed under tensile stress. The result is discussed in terms of the kinetics of defect formation and motion in the strained Si barriers. RP PROKES, SM (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 31 TC 4 Z9 4 U1 0 U2 1 PU INST MATERIALS PI LONDON PA 1 CARLTON HOUSE TERRACE, LONDON, ENGLAND SW1Y 5DB SN 0267-0836 J9 MATER SCI TECH SER JI Mater. Sci. Technol. PD APR PY 1995 VL 11 IS 4 BP 389 EP 395 PG 7 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA RP529 UT WOS:A1995RP52900011 ER PT J AU CLABORN, D AF CLABORN, D TI ABUNDANCE OF 3 MOSQUITO VECTORS IN OKINAWA WITH RELEVANCE TO DISEASE RISK SO MILITARY MEDICINE LA English DT Article AB The abundances of three mosquito vectors on Okinawa were determined using New Jersey light traps and compared with data from an identical survey in 1969. The focal distribution of the primary vector of Japanese encephalitis (JE), Culex tritaeniorhynchus Giles, indicates that exposure risks are not uniform throughout the island. The populations of the primary vectors of JE and malaria appear to be declining, resulting in significant changes in the relative abundances of mosquito species. These changes have implications for the current dependent JE immunization program as well as for the possible reintroduction of malaria to Okinawa. RP CLABORN, D (reprint author), USN STN,NAVY ENVIRONM & PREVENT MED UNIT 5,SAN DIEGO,CA, USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU ASSN MILITARY SURG US PI BETHESDA PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 SN 0026-4075 J9 MIL MED JI Milit. Med. PD APR PY 1995 VL 160 IS 4 BP 172 EP 174 PG 3 WC Medicine, General & Internal SC General & Internal Medicine GA RC128 UT WOS:A1995RC12800008 PM 7617223 ER PT J AU STEINFELD, R BAGGETT, JC MITCHELL, RE AF STEINFELD, R BAGGETT, JC MITCHELL, RE TI ORTHOPEDIC INJURIES EXPERIENCED BY UNITED-STATES PRISONERS OF WAR DURING OPERATION DESERT-STORM - A DESCRIPTIVE ANALYSIS SO MILITARY MEDICINE LA English DT Article AB U.S. prisoners of war from Operation Desert Storm suffered significant orthopedic injuries. The repatriated prisoners of war (RPOWs) have been medically evaluated over a 3-year period with orthopedic follow-up. A significant proportion of the musculoskeletal injuries were located around the neck and spine, shoulder, and upper extremity. Aircraft ejection was the cause of the majority of these injuries. Lower extremity injuries after ejection, aside from the knee, were not reported. Flail injuries of the lower extremities were absent as well. These results were examined with reference to Vietnam RPOW data. RP STEINFELD, R (reprint author), USN,INST AEROSP & OPERAT MED,DEPT SPECIAL STUDIES,PENSACOLA,FL 32508, USA. NR 0 TC 3 Z9 3 U1 0 U2 0 PU ASSN MILITARY SURG US PI BETHESDA PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 SN 0026-4075 J9 MIL MED JI Milit. Med. PD APR PY 1995 VL 160 IS 4 BP 175 EP 177 PG 3 WC Medicine, General & Internal SC General & Internal Medicine GA RC128 UT WOS:A1995RC12800009 PM 7617224 ER PT J AU DAY, FJ AF DAY, FJ TI ESSENCE, INVESTIGATION, AND MANAGEMENT OF NEUROPATHIC PAINS - HOPES FROM ACKNOWLEDGMENT OF CHAOS SO MUSCLE & NERVE LA English DT Letter RP DAY, FJ (reprint author), USN HOSP,DEPT ANESTHESIOL,8750 MT BLVD,OAKLAND,CA 94627, USA. NR 7 TC 2 Z9 2 U1 0 U2 0 PU JOHN WILEY & SONS INC PI NEW YORK PA 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0148-639X J9 MUSCLE NERVE JI Muscle Nerve PD APR PY 1995 VL 18 IS 4 BP 454 EP 455 DI 10.1002/mus.880180413 PG 2 WC Clinical Neurology; Neurosciences SC Neurosciences & Neurology GA QN272 UT WOS:A1995QN27200012 PM 7715632 ER PT J AU BITTERS, DL AF BITTERS, DL TI EFFICIENT CONCENTRATION OF FORCES, OR HOW TO FIGHT OUTNUMBERED AND WIN SO NAVAL RESEARCH LOGISTICS LA English DT Article AB The dramatic outcome of Operation Desert Storm has caused a paradigm shift in military thinking. Traditionally the overriding factor in combat operations has been mission accomplishment, but doctrinal developers now include additional criteria. Though there are many ways to conduct a campaign to assure a military victory, some are costlier than others in terms of casualties. Current thinking requires that the commander have the goal of mission accomplishment with minimum loss of friendly forces. This article explores the principle of efficient force concentration as a means of minimizing losses while defeating an enemy farce, particularly one that is numerically superior. It looks at several attrition mechanisms and considers conditions under which theory suggests defeat of a larger force is and is not possible. It also investigates properties of a measure of effectiveness called force elasticity and argues that this is the proper benchmark for comparing the relative effectiveness of combatants. (C) 1995 John Wiley and Sons, Inc. C1 USN,POSTGRAD SCH,MONTEREY,CA 93943. RP BITTERS, DL (reprint author), USA,COMMAND & GEN STAFF COLL,FT LEAVENWORTH,KS 66027, USA. NR 21 TC 0 Z9 0 U1 0 U2 0 PU JOHN WILEY & SONS INC PI NEW YORK PA 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0894-069X J9 NAV RES LOG JI Nav. Res. Logist. PD APR PY 1995 VL 42 IS 3 BP 397 EP 418 DI 10.1002/1520-6750(199504)42:3<397::AID-NAV3220420306>3.0.CO;2-Q PG 22 WC Operations Research & Management Science SC Operations Research & Management Science GA QM302 UT WOS:A1995QM30200004 ER PT J AU JUSTUS, BL JOHNSON, TL HUSTON, AL AF JUSTUS, BL JOHNSON, TL HUSTON, AL TI RADIATION-DOSIMETRY USING THERMOLUMINESCENCE OF SEMICONDUCTOR-DOPED VYCOR GLASS SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article AB We report a semiconductor-doped, thermoluminescent Vycor glass with properties well suited for radiation dosimetry. The glow curve is dominated by a broad peak centered at 220 degrees C having a very low fade rate at room temperature, and an exceptionally linear dose vs. thermoluminescent response that extends over the range 1 mGy to 500 Gy. C1 USN,RES LAB,DIV COMMAND SUPPORT,WASHINGTON,DC 20375. RP JUSTUS, BL (reprint author), USN,RES LAB,DIV OPT SCI,WASHINGTON,DC 20375, USA. NR 11 TC 12 Z9 12 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD APR PY 1995 VL 95 IS 4 BP 533 EP 536 DI 10.1016/0168-583X(94)00745-4 PG 4 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA QT045 UT WOS:A1995QT04500016 ER PT J AU CHAKRABARTI, SK LIBBY, AR PALO, P AF CHAKRABARTI, SK LIBBY, AR PALO, P TI SMALL-SCALE TESTING ON CURRENT-INDUCED FORCES ON A MOORED TANKER SO OCEAN ENGINEERING LA English DT Article AB Tankers and barges are often moored in high current in restricted channels. The design of the mooring lines requires the accurate knowledge of the current forces on these vessels. Tests were conducted on a tanker model in current produced in shallow and deep water. Current generated in the test tank had both uniform and linear shear profiles. The shear was positive as well as negative. The angle of the tanker to the current direction was varied and the inline and transverse forces on the tanker were measured with load cells placed in the mooring lines. Extensive data have been presented on the lateral force coefficients on the tanker model. Deviation of the results from the OCIMF data has been discussed. C1 USN,FAC CHEM ENGN JASSY,FACIL ENGN SERV CTR,PORT HUENEME,CA. RP CHAKRABARTI, SK (reprint author), CBITSC,PLAINFIELD,IL, USA. NR 11 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 0029-8018 J9 OCEAN ENG JI Ocean Eng. PD APR PY 1995 VL 22 IS 3 BP 271 EP & DI 10.1016/0029-8018(94)00007-T PG 0 WC Engineering, Marine; Engineering, Civil; Engineering, Ocean; Oceanography SC Engineering; Oceanography GA PX705 UT WOS:A1995PX70500003 ER PT J AU SENGUPTA, K AF SENGUPTA, K TI COGNITIVE FEEDBACK IN ENVIRONMENTS CHARACTERIZED BY IRRELEVANT INFORMATION SO OMEGA-INTERNATIONAL JOURNAL OF MANAGEMENT SCIENCE LA English DT Article DE COGNITIVE FEEDBACK; DECISION MAKING PROCESS; DECISION SUPPORT SYSTEMS ID OUTCOME FEEDBACK; DECISION-MAKING; JUDGMENT; PERFORMANCE; VALIDITY AB Research in human information processing demonstrates that the presence of irrelevant information has an adverse effect on the quality of decisions. Decision makers are unable to identify and separate the effect of irrelevant information, thereby reducing the quality of decisions, The propensity to overutilize irrelevant information is significant because present day work environments are increasingly rich in information. This study examines the comparative efficacies of two types of information-cognitive feedback and outcome feedback-in identifying irrelevant information and thereby improving decision quality. Outcome feedback is information on the accuracy of a decision. Cognitive feedback is information on the how and why underlying the accuracy. The results show that subjects provided with cognitive feedback attained significantly better identification of irrelevant information than those relying solely on outcome feedback. The use of cognitive feedback also resulted in greater accuracy and cognitive control. We discuss the implications of the results for designing decision support systems and for research in decision aiding. RP SENGUPTA, K (reprint author), USN,POSTGRAD SCH,DEPT SYST MANAGEMENT,CODE SM-SE,MONTEREY,CA 93943, USA. NR 50 TC 3 Z9 3 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0305-0483 J9 OMEGA-INT J MANAGE S JI Omega-Int. J. Manage. Sci. PD APR PY 1995 VL 23 IS 2 BP 125 EP 143 DI 10.1016/0305-0483(94)00061-E PG 19 WC Management; Operations Research & Management Science SC Business & Economics; Operations Research & Management Science GA QX470 UT WOS:A1995QX47000002 ER PT J AU COHEN, ME SIMECEK, JW AF COHEN, ME SIMECEK, JW TI EFFECTS OF GENDER-RELATED FACTORS ON THE INCIDENCE OF LOCALIZED ALVEOLAR OSTEITIS SO ORAL SURGERY ORAL MEDICINE ORAL PATHOLOGY ORAL RADIOLOGY AND ENDODONTICS LA English DT Article ID MANDIBULAR 3RD MOLARS; SURGICAL REMOVAL; SURGERY; COMPLICATIONS AB Numerous literature references have suggested increased risk for localized alveolar osteitis associated with female gender, use of oral contraceptives, and point in menstrual/contraceptive cycle. However, the available information has not been systematically considered with the intent to accurately estimate the magnitude of these effects. The present review suggests that under certain conditions, some of which may be avoidable, females may have at least a two to threefold increase in osteitis risk compared with males. It appears that this greater risk may be reduced by considering hormonal cycles when scheduling elective exodontia. RP COHEN, ME (reprint author), USN,DENT RES INST,BLDG 1-H,2701 SHERIDAN RD,GREAT LAKES,IL 60088, USA. NR 30 TC 18 Z9 18 U1 0 U2 1 PU MOSBY, INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 USA SN 1079-2104 J9 ORAL SURG ORAL MED O JI Oral Surg. Oral Med. Oral Pathol. Oral Radiol. Endod. PD APR PY 1995 VL 79 IS 4 BP 416 EP 422 DI 10.1016/S1079-2104(05)80120-9 PG 7 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA QT453 UT WOS:A1995QT45300007 PM 7614198 ER PT J AU CHAMPA, JR CULLISON, TR MACK, GR AF CHAMPA, JR CULLISON, TR MACK, GR TI IRREDUCIBLE ANTERIOR DISLOCATION OF THE PROXIMAL RADIUS IN AN ADULT SO ORTHOPEDICS LA English DT Note C1 USN HOSP,DEPT CLIN INVEST,SAN DIEGO,CA 92134. USN HOSP,DEPT ORTHOPED,SAN DIEGO,CA 92134. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SLACK INC PI THOROFARE PA 6900 GROVE RD, THOROFARE, NJ 08086 SN 0147-7447 J9 ORTHOPEDICS JI Orthopedics PD APR PY 1995 VL 18 IS 4 BP 387 EP 388 PG 2 WC Orthopedics SC Orthopedics GA QR450 UT WOS:A1995QR45000008 PM 7603922 ER PT J AU HOANG, JT MARTIN, PJ AF HOANG, JT MARTIN, PJ TI SUPRAGLOTTIC BEE STING SO OTOLARYNGOLOGY-HEAD AND NECK SURGERY LA English DT Note ID ANAPHYLAXIS; HYPERSENSITIVITY; HYMENOPTERA; MANAGEMENT; RISK C1 USN, MED CTR, DEPT OTOLARYNGOL HEAD & NECK SURG, SAN DIEGO, CA 92134 USA. RP HOANG, JT (reprint author), NAVAL MED CTR, DEPT CLIN INVEST, USN, SAN DIEGO, CA 92134 USA. NR 14 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 APR PY 1995 VL 112 IS 4 BP 592 EP 594 DI 10.1177/019459989511200415 PG 3 WC Otorhinolaryngology; Surgery SC Otorhinolaryngology; Surgery GA QR876 UT WOS:A1995QR87600015 PM 7700668 ER PT J AU BROOK, I FRAZIER, EH YEAGER, JK AF BROOK, I FRAZIER, EH YEAGER, JK TI AEROBIC AND ANAEROBIC MICROBIOLOGY OF KERIONS SO PEDIATRIC INFECTIOUS DISEASE JOURNAL LA English DT Note DE KERION; TINEA CAPITIS; ANAEROBIC BACTERIA; TRICHOPHYTON TONSURANS ID PROPIONIBACTERIUM-ACNES; TINEA CAPITIS; CHILDREN; VULGARIS; INVITRO; SCALP C1 USN HOSP,DEPT PEDIAT,BETHESDA,MD. USN HOSP,DEPT LAB MED,BETHESDA,MD. USN HOSP,DEPT DERMATOL,BETHESDA,MD. NR 23 TC 5 Z9 5 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 APR PY 1995 VL 14 IS 4 BP 326 EP 327 DI 10.1097/00006454-199504000-00018 PG 2 WC Immunology; Infectious Diseases; Pediatrics SC Immunology; Infectious Diseases; Pediatrics GA QT556 UT WOS:A1995QT55600018 PM 7603820 ER PT J AU MITCHELL, DK VAN, R MASON, EH NORRIS, DM PICKERING, LK AF MITCHELL, DK VAN, R MASON, EH NORRIS, DM PICKERING, LK TI PROSPECTIVE-STUDY OF INFECTION WITH CLOSTRIDIUM-DIFFICILE IN CHILDREN GIVEN AMOXICILLIN/CLAVULANATE FOR OTITIS-MEDIA SO PEDIATRIC RESEARCH LA English DT Meeting Abstract C1 CHILDRENS HOSP KINGS DAUGHTERS, NORFOLK, VA USA. EVMS, NORFOLK, VA USA. USN, MED CTR, PORTSMOUTH, VA 23708 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0031-3998 J9 PEDIATR RES JI Pediatr. Res. PD APR PY 1995 VL 37 IS 4 BP A142 EP A142 PN 2 PG 1 WC Pediatrics SC Pediatrics GA QP082 UT WOS:A1995QP08200835 ER PT J AU SHOEMAKER, LR BERGSTROM, W WELCH, TR RAGOSTA, K AF SHOEMAKER, LR BERGSTROM, W WELCH, TR RAGOSTA, K TI THE ROLE OF BASIC FIBROBLAST GROWTH-FACTOR (BFGF) IN HEPARIN-INDUCED BONE-RESORPTION SO PEDIATRIC RESEARCH LA English DT Meeting Abstract C1 SUNY HLTH SCI CTR, SYRACUSE, NY USA. USN, DIV PEDIAT, BETHESDA, MD 20814 USA. CHILDRENS HOSP RES FDN, CINCINNATI, OH 45229 USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0031-3998 J9 PEDIATR RES JI Pediatr. Res. PD APR PY 1995 VL 37 IS 4 BP A79 EP A79 PN 2 PG 1 WC Pediatrics SC Pediatrics GA QP082 UT WOS:A1995QP08200461 ER PT J AU OBRIEN, F HAMMEL, SE NGUYEN, CT AF OBRIEN, F HAMMEL, SE NGUYEN, CT TI INDUCTION PROOF FOR A GENERAL EXPONENTIAL INTEGRAL FORMULA SO PERCEPTUAL AND MOTOR SKILLS LA English DT Article AB The authors' Poisson probability method for detecting stochastic randomness in three-dimensional space involved the need to evaluate an integral for which no appropriate closed-form solution could be located in standard handbooks. This resulted in a formula specifically calculated to solve this integral in closed form. In this paper the calculation is verified by the method of mathematical induction. RP OBRIEN, F (reprint author), USN,UNDERSEA WARFARE CTR DIV,CODE 2211,B1171-1,1176 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 APR PY 1995 VL 80 IS 2 BP 424 EP 426 PG 3 WC Psychology, Experimental SC Psychology GA RC315 UT WOS:A1995RC31500015 ER PT J AU FELDMAN, JL KLUGE, MD AF FELDMAN, JL KLUGE, MD TI REALISTIC MODEL-CALCULATIONS BASED ON THE KUBO THEORY FOR THE THERMAL-CONDUCTIVITY OF AMORPHOUS INSULATORS SO PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES LA English DT Article; Proceedings Paper CT 5th International Workshop on Disordered Systems CY FEB 27-MAR 03, 1994 CL ANDALO, ITALY ID COMPUTER-SIMULATION; MOLECULAR-DYNAMICS; SILICON; GLASSES; SOLIDS; SI; PLATEAU; HEAT AB The thermal conductivity of models of amorphous silicon and vitreous silica are discussed. In previous work on amorphous silicon, 216- and 1000-atom models were studied within the Kubo theory and the harmonic approximation using the Stillinger-Weber potential and good agreement with the experimental high-temperature apparent saturation value was obtained. In order to test the model dependence of such results we performed calculations for models based on the Keating potential. The Keating model apparently gives much less force-constant disorder than does the Stillinger-Weber model, as evident from the N dependence and the frequency range of localized states. We also present results of calculations for vitreous silica based on the Feuston-Garofalini model that we relaxed, using their potential, to zero pressure. The results for vitreous silica are in fair agreement with experiment at temperatures above 100 K which corresponds to the lowest normal-mode frequency contained within the model. RP FELDMAN, JL (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 20 TC 5 Z9 5 U1 0 U2 3 PU TAYLOR & FRANCIS LTD LONDON PI LONDON PA ONE GUNDPOWDER SQUARE, LONDON, ENGLAND EC4A 3DE SN 0141-8637 J9 PHILOS MAG B JI Philos. Mag. B-Phys. Condens. Matter Stat. Mech. Electron. Opt. Magn. Prop. PD APR PY 1995 VL 71 IS 4 BP 641 EP 647 DI 10.1080/01418639508238553 PG 7 WC Materials Science, Multidisciplinary; Mechanics; Physics, Applied; Physics, Condensed Matter SC Materials Science; Mechanics; Physics GA QT964 UT WOS:A1995QT96400018 ER PT J AU DEKINDER, J BOUKAHIL, A FELDMAN, JL HUBER, DL BOUWEN, A SCHOEMAKER, D AF DEKINDER, J BOUKAHIL, A FELDMAN, JL HUBER, DL BOUWEN, A SCHOEMAKER, D TI VIBRATIONAL COUPLING IN DISORDERED-SYSTEMS - SOLID H-2 AND D-2 SO PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES LA English DT Article; Proceedings Paper CT 5th International Workshop on Disordered Systems CY FEB 27-MAR 03, 1994 CL ANDALO, ITALY ID MOLECULAR-CRYSTALS; RELAXATION; COHERENCE; DECAY AB High-resolution Raman measurements were performed of the intramolecular vibrational transition in mixed crystals of (o-H-2)(x)(p-H-2)(1-x) and (p-D-2)(x)(o-D-2)(1-x). The spectra obtained clearly show the effect of coupling between the vibrational states of the two constituent molecules. Calculations of the line shapes by the coherent potential approximation and by diagonalization of the dynamical matrix of a 5324 molecule supercell are compared with the experimental results. C1 UNIV WISCONSIN,CTR SYNCHROTRON RADIAT,STOUGHTON,WI 53589. USN,RES LAB,WASHINGTON,DC 20375. UNIV WISCONSIN,DEPT PHYS,MADISON,WI 53706. RP DEKINDER, J (reprint author), UNIV INSTELLING ANTWERP,DEPT PHYS,B-2610 WILRIJK,BELGIUM. NR 20 TC 0 Z9 0 U1 0 U2 0 PU TAYLOR & FRANCIS LTD LONDON PI LONDON PA ONE GUNDPOWDER SQUARE, LONDON, ENGLAND EC4A 3DE SN 0141-8637 J9 PHILOS MAG B JI Philos. Mag. B-Phys. Condens. Matter Stat. Mech. Electron. Opt. Magn. Prop. PD APR PY 1995 VL 71 IS 4 BP 669 EP 675 DI 10.1080/01418639508238556 PG 7 WC Materials Science, Multidisciplinary; Mechanics; Physics, Applied; Physics, Condensed Matter SC Materials Science; Mechanics; Physics GA QT964 UT WOS:A1995QT96400021 ER PT J AU MELINGER, JS MCMORROW, D HILLEGAS, C WARREN, WS AF MELINGER, JS MCMORROW, D HILLEGAS, C WARREN, WS TI SELECTIVE EXCITATION OF VIBRATIONAL OVERTONES IN AN ANHARMONIC LADDER WITH FREQUENCY-MODULATED AND AMPLITUDE-MODULATED LASER-PULSES SO PHYSICAL REVIEW A LA English DT Note ID MODEL SIMULATIONS; ANALYTICAL SHAPES; COHERENT CONTROL; DISSOCIATION C1 PRINCETON UNIV,DEPT CHEM,PRINCETON,NJ 08544. PRINCETON UNIV,PRINCETON CTR PHOTON & OPTOELECTR,PRINCETON,NJ 08544. RP MELINGER, JS (reprint author), USN,RES LAB,CODE 6613,WASHINGTON,DC 20375, USA. NR 13 TC 32 Z9 32 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD APR PY 1995 VL 51 IS 4 BP 3366 EP 3369 DI 10.1103/PhysRevA.51.3366 PG 4 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA QT401 UT WOS:A1995QT40100095 ER PT J AU SINGH, DJ PICKETT, WE AF SINGH, DJ PICKETT, WE TI ELECTRONIC AND STRUCTURAL-PROPERTIES OF LA3NI2B2N3 SO PHYSICAL REVIEW B LA English DT Note ID PRESSURE RP SINGH, DJ (reprint author), USN,RES LAB,COMPLEX SYST THEORY BRANCH,WASHINGTON,DC 20375, USA. RI Singh, David/I-2416-2012 NR 17 TC 23 Z9 23 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD APR 1 PY 1995 VL 51 IS 13 BP 8668 EP 8671 DI 10.1103/PhysRevB.51.8668 PG 4 WC Physics, Condensed Matter SC Physics GA QR978 UT WOS:A1995QR97800090 ER PT J AU ROSENBERG, A KENDZIORA, C AF ROSENBERG, A KENDZIORA, C TI EFFECT OF C-13 ISOTOPIC-SUBSTITUTION ON THE RAMAN-SPECTRUM OF C-60 SO PHYSICAL REVIEW B LA English DT Note ID MODES; FILMS; SCATTERING RP ROSENBERG, A (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 15 TC 8 Z9 8 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 APR 1 PY 1995 VL 51 IS 14 BP 9321 EP 9324 DI 10.1103/PhysRevB.51.9321 PG 4 WC Physics, Condensed Matter SC Physics GA QT246 UT WOS:A1995QT24600075 ER PT J AU TREECE, RE OSOFSKY, MS SKELTON, EF QADRI, SB HORWITZ, JS CHRISEY, DB AF TREECE, RE OSOFSKY, MS SKELTON, EF QADRI, SB HORWITZ, JS CHRISEY, DB TI NEW PHASE OF SUPERCONDUCTING NBN STABILIZED BY HETEROEPITAXIAL FILM GROWTH SO PHYSICAL REVIEW B LA English DT Note ID PULSED-LASER DEPOSITION; THIN-FILMS; CRITICAL-TEMPERATURE; NITRIDE; RESISTIVITY RP TREECE, RE (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. RI Osofsky, Michael/A-1050-2010 NR 31 TC 36 Z9 36 U1 2 U2 13 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD APR 1 PY 1995 VL 51 IS 14 BP 9356 EP 9359 DI 10.1103/PhysRevB.51.9356 PG 4 WC Physics, Condensed Matter SC Physics GA QT246 UT WOS:A1995QT24600084 ER PT J AU UMSTADTER, D KIM, J ESAREY, E DODD, E NEUBERT, T AF UMSTADTER, D KIM, J ESAREY, E DODD, E NEUBERT, T TI RESONANTLY LASER-DRIVEN PLASMA-WAVES FOR ELECTRON ACCELERATION SO PHYSICAL REVIEW E LA English DT Article ID WAKE-FIELD GENERATION; CHIRPED-PULSE AMPLIFICATION; ELECTROMAGNETIC-RADIATION; PHOTON ACCELERATOR; EXCITATION C1 UNIV MICHIGAN,DEPT ELECT ENGN & COMP SCI,ANN ARBOR,MI 48109. USN,RES LAB,DIV PLASMA PHYS,WASHINGTON,DC 20375. UNIV MICHIGAN,SPACE PHYS RES LAB,ANN ARBOR,MI 48109. RP UMSTADTER, D (reprint author), UNIV MICHIGAN,CTR ULTRAFAST OPT SCI,ANN ARBOR,MI 48109, USA. RI Umstadter, Donald/A-1581-2016 OI Umstadter, Donald/0000-0002-2182-4346 NR 57 TC 33 Z9 34 U1 0 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 APR PY 1995 VL 51 IS 4 BP 3484 EP 3497 DI 10.1103/PhysRevE.51.3484 PN B PG 14 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA QV541 UT WOS:A1995QV54100009 ER PT J AU FIORITO, RB RULE, DW PIESTRUP, MA MARUYAMA, XK SILZER, RM SKOPIK, DM SHCHAGIN, AV AF FIORITO, RB RULE, DW PIESTRUP, MA MARUYAMA, XK SILZER, RM SKOPIK, DM SHCHAGIN, AV TI POLARIZED ANGULAR-DISTRIBUTIONS OF PARAMETRIC X-RADIATION AND VACUUM-ULTRAVIOLET TRANSITION RADIATION FROM RELATIVISTIC ELECTRONS SO PHYSICAL REVIEW E LA English DT Note ID EXTREME ULTRAVIOLET; SILICON-CRYSTALS; RAY; GENERATION C1 ADELPHI TECHNOL INC,PALO ALTO,CA 94301. USN,POSTGRAD SCH,MONTEREY,CA 93943. UNIV SASKATCHEWAN,SASKATCHEWAN ACCELERATOR LAB,SASKATOON,SK S7N 0W0,CANADA. KHARKOV PHYS & TECHNOL INST,KHARKOV 310108,UKRAINE. RP FIORITO, RB (reprint author), USN,CTR SURFACE WARFARE,DIV CARDEROCK,10901 NEW HAMPSHIRE AVE,SILVER SPRING,MD 20903, USA. NR 31 TC 21 Z9 21 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 APR PY 1995 VL 51 IS 4 BP R2759 EP R2762 PN A PG 4 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA QV540 UT WOS:A1995QV54000019 ER PT J AU IN, V DITTO, WL SPANO, ML AF IN, V DITTO, WL SPANO, ML TI ADAPTIVE-CONTROL AND TRACKING OF CHAOS IN A MAGNETOELASTIC RIBBON SO PHYSICAL REVIEW E LA English DT Note ID UNSTABLE ORBITS C1 USN,CTR SURFACE WARFARE,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 NR 12 TC 16 Z9 16 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1063-651X J9 PHYS REV E JI Phys. Rev. E PD APR PY 1995 VL 51 IS 4 BP R2689 EP R2692 PN A PG 4 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA QV540 UT WOS:A1995QV54000001 ER PT J AU MCKEOWN, DA KIM, CC BELL, MI AF MCKEOWN, DA KIM, CC BELL, MI TI VIBRATIONAL ANALYSIS OF DIOPTASE CU6SI6O18-CENTER-DOT-6(H2O) AND ITS PUCKERED 6-MEMBERED RING SO PHYSICS AND CHEMISTRY OF MINERALS LA English DT Article AB The normal modes of vibration and their frequencies are calculated for dioptase, a mineral whose crystal structure (space group R $($) over bar$$ 3 or C-3i(2) consists of puckered six-membered silicate rings (Si6O18) linked by CU2+ ions and H2O groups. The calculation employs a valence force potential consisting of central interactions between nearest neighbors and bond-bending interactions centered at the Si4+ and CU2+ ions. The force constants are determined by fitting the calculated frequencies to values obtained by measuring the single-crystal Raman spectra. The calculated frequencies are in reasonable agreement with experiment, permitting assignment of normal modes to the observed spectral frequencies. Considerable mixing of Cu and H2O motions with those of the ring is found for the Raman-active modes below 430 cm(-1). The normal modes and frequencies of the hypothetical isolated ring with C-3i symmetry are determined by neglecting all interactions between the rings and the surrounding Cu and H2O. The identification of normal modes characteristic of the puckered six-membered silicate rings and the effect of the environment on these modes may prove useful in the interpretation of the Raman spectra of amorphous silicates. C1 USN,RES LAB,DYNAM SOLID BRANCH,WASHINGTON,DC 20375. RP MCKEOWN, DA (reprint author), HOWARD UNIV,DEPT CHEM,525 COLL ST NW,WASHINGTON,DC 20059, USA. NR 11 TC 8 Z9 8 U1 1 U2 1 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0342-1791 J9 PHYS CHEM MINER JI Phys. Chem. Miner. PD APR PY 1995 VL 22 IS 3 BP 137 EP 144 PG 8 WC Materials Science, Multidisciplinary; Mineralogy SC Materials Science; Mineralogy GA QW829 UT WOS:A1995QW82900001 ER PT J AU SHEN, CY AF SHEN, CY TI EQUILIBRIUM SALT-FINGERING CONVECTION SO PHYSICS OF FLUIDS LA English DT Article ID INSTABILITY; STABILITY RP SHEN, CY (reprint author), USN,RES LAB,CODE 7250,WASHINGTON,DC 20375, USA. NR 12 TC 22 Z9 22 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 1070-6631 J9 PHYS FLUIDS JI Phys. Fluids PD APR PY 1995 VL 7 IS 4 BP 706 EP 717 DI 10.1063/1.868596 PG 12 WC Mechanics; Physics, Fluids & Plasmas SC Mechanics; Physics GA QP778 UT WOS:A1995QP77800006 ER PT J AU KRALL, J JOYCE, G AF KRALL, J JOYCE, G TI TRANSVERSE EQUILIBRIUM AND STABILITY OF THE PRIMARY BEAM IN THE PLASMA WAKE-FIELD ACCELERATOR SO PHYSICS OF PLASMAS LA English DT Article ID ION-FOCUSED REGIME; RELATIVISTIC ELECTRON-BEAM; WAKEFIELD ACCELERATOR; HOSE INSTABILITY; SIMULATIONS; DYNAMICS; WAVES RP USN, RES LAB, DIV PLASMA PHYS, BEAM PHYS BRANCH, WASHINGTON, DC 20375 USA. NR 29 TC 31 Z9 31 U1 0 U2 3 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 APR PY 1995 VL 2 IS 4 BP 1326 EP 1331 DI 10.1063/1.871344 PG 6 WC Physics, Fluids & Plasmas SC Physics GA QQ860 UT WOS:A1995QQ86000034 ER PT J AU PRINZ, G HATHAWAY, K AF PRINZ, G HATHAWAY, K TI MAGNETOELECTRONICS - SPECIAL ISSUE SO PHYSICS TODAY LA English DT Editorial Material C1 OFF NAVAL RES,WASHINGTON,DC. USN,CTR SURFACE WARFARE,WASHINGTON,DC. RP PRINZ, G (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 0 TC 108 Z9 108 U1 4 U2 7 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0031-9228 J9 PHYS TODAY JI Phys. Today PD APR PY 1995 VL 48 IS 4 BP 24 EP 25 DI 10.1063/1.881446 PG 2 WC Physics, Multidisciplinary SC Physics GA QT561 UT WOS:A1995QT56100006 ER PT J AU PRINZ, GA AF PRINZ, GA TI SPIN-POLARIZED TRANSPORT SO PHYSICS TODAY LA English DT Article ID GIANT MAGNETORESISTANCE; MAGNETIC MULTILAYERS; TUNNEL-JUNCTIONS; SCATTERING; STATES; ALLOYS; FIELD; FILMS; CO RP PRINZ, GA (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 25 TC 785 Z9 793 U1 6 U2 38 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0031-9228 J9 PHYS TODAY JI Phys. Today PD APR PY 1995 VL 48 IS 4 BP 58 EP 63 DI 10.1063/1.881459 PG 6 WC Physics, Multidisciplinary SC Physics GA QT561 UT WOS:A1995QT56100011 ER PT J AU KAWESKI, S AF KAWESKI, S TI BREAST RECONSTRUCTION SO PLASTIC AND RECONSTRUCTIVE SURGERY LA English DT Letter RP KAWESKI, S (reprint author), USN RESERVE,MED CORPS,34800 BOB WILSON DR,SAN DIEGO,CA 92134, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0032-1052 J9 PLAST RECONSTR SURG JI Plast. Reconstr. Surg. PD APR PY 1995 VL 95 IS 4 BP 774 EP 774 PG 1 WC Surgery SC Surgery GA QM073 UT WOS:A1995QM07300035 PM 7892334 ER PT J AU HENDEN, AA HONEYCUTT, RK AF HENDEN, AA HONEYCUTT, RK TI SECONDARY PHOTOMETRIC STANDARDS FOR NORTHERN NOVA-LIKE CATACLYSMIC VARIABLES SO PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC LA English DT Article ID CATALOG; ATLAS AB An average of 11 B,V secondary standards per field have been established for 58 cataclysmic variable stars, most of which are nova-like variables. The standards are within a few arcminutes of the variable and are therefore well-suited for CCD photometry. The standards have brightness of V similar to 12-17 and have a typical accuracy per standard of +/-0.02 mag. C1 INDIANA UNIV, DEPT ASTRON, BLOOMINGTON, IN 47405 USA. RP HENDEN, AA (reprint author), USRA, USN OBSERV, FLAGSTAFF STN, POB 1149, FLAGSTAFF, AZ 86002 USA. NR 6 TC 58 Z9 58 U1 0 U2 0 PU UNIV CHICAGO PRESS PI CHICAGO PA 1427 E 60TH ST, CHICAGO, IL 60637-2954 USA SN 0004-6280 J9 PUBL ASTRON SOC PAC JI Publ. Astron. Soc. Pac. PD APR PY 1995 VL 107 IS 710 BP 324 EP 346 DI 10.1086/133557 PG 23 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QT979 UT WOS:A1995QT97900002 ER PT J AU PENG, MS LI, SW CHANG, SW WILLIAMS, RT AF PENG, MS LI, SW CHANG, SW WILLIAMS, RT TI FLOW OVER MOUNTAINS - CORIOLIS-FORCE, TRANSIENT TROUGHS AND 3 DIMENSIONALITY SO QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY LA English DT Article ID FROUDE-NUMBER FLOW; PAST 3-DIMENSIONAL OBSTACLES; SEMIGEOSTROPHIC FLOW; STRATIFIED FLOW; ATMOSPHERE; TOPOGRAPHY AB Some issues, concerning uniform, stratified flow over a three-dimensional mountain, that have not been fully explored are studied using primitive-equation models. When the Froude number (Fr) is small (e.g. Fr < 0.5), we find that the Coriolis force cannot be neglected for flow over small-scale mountains (characteristic length L < 50 km) even though the Rossby number (Re) is large. When the Coriolis force is neglected, a pair of symmetric vortices is induced on the lee side, irrespective of the scale of the mountain, as long as Fr lies roughly between 0.1 and 0.5. The major effect of the Coriolis force is to modify or diminish the lee vortices due to the leftward deflection on the upstream side of the mountain. The Coriolis deflection also reduces the upstream propagation. When Fr is greater than or equal to 1, most of the flow goes over the mountain and the Coriolis effect is small for the same Ro. Therefore, the importance of the Coriolis effect is determined by both Ro and Fr. As the scale of the mountain increases from small-scale to mesoscale (100 km < L < 300 km), the upstream flow is deflected more to the left by the Coriolis effect,and a trough develops on the lee side. The length-scale of the trough depends on the scale of the mountain in the along-flow direction. For smaller-scale mountains, small vortices can be generated within the lee-side trough when Fr is small. When the mountain scale is increased, the lee-side vortices disappear, and only a lee-side trough remains. Depending on the mean wind speed and the mountain scale, the lee-side trough can be advected by the anticyclonic flow over the mountain to the south, and remain attached to the mountain for a long time. A train of troughs is generated on the lee side of an elliptic mountain associated with the lee-side gravity waves. Simulations of flows over mountains in two-dimensional and three-dimensional models with the same cross-sectional profile are compared. For small-scale mountains (L < 100 km), the two-dimensional model overestimates the amount of airflow over the mountain and also the lee-side downslope wind. C1 USN,RES LAB,MONTEREY,CA. RP PENG, MS (reprint author), USN,POSTGRAD SCH,DEPT METEOROL,MONTEREY,CA 93943, USA. NR 23 TC 34 Z9 35 U1 0 U2 0 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 APR PY 1995 VL 121 IS 523 BP 593 EP 613 DI 10.1256/smsqj.52306 PN A PG 21 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA QZ800 UT WOS:A1995QZ80000006 ER PT J AU FOX, AG BROTHERS, DG AF FOX, AG BROTHERS, DG TI THE ROLE OF TITANIUM IN THE NONMETALLIC INCLUSIONS WHICH NUCLEATE ACICULAR FERRITE IN THE SUBMERGED-ARC WELD (SAW) FUSION ZONES OF NAVY HY-100 STEEL SO SCRIPTA METALLURGICA ET MATERIALIA LA English DT Article ID STRENGTH RP FOX, AG (reprint author), USN, POSTGRAD SCH, DEPT MECH ENGN, MAT SCI SECT, MONTEREY, CA 93943 USA. NR 14 TC 17 Z9 21 U1 0 U2 2 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0956-716X J9 SCRIPTA METALL MATER JI Scr. Metall. Materialia PD APR 1 PY 1995 VL 32 IS 7 BP 1061 EP 1066 DI 10.1016/0956-716X(95)00075-7 PG 6 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA QL456 UT WOS:A1995QL45600022 ER PT J AU HOLLAND, WJ AF HOLLAND, WJ TI UNTITLED SO SEA TECHNOLOGY LA English DT Letter RP HOLLAND, WJ (reprint author), USN,BURKE,VA 22015, USA. NR 0 TC 2 Z9 2 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 APR PY 1995 VL 36 IS 4 BP 91 EP 92 PG 2 WC Engineering, Ocean SC Engineering GA QU451 UT WOS:A1995QU45100014 ER PT J AU JONES, DA AF JONES, DA TI UNTITLED SO SEA TECHNOLOGY LA English DT Letter RP JONES, DA (reprint author), USN,OFF CHIEF NAVAL OPERAT,DIV SUBMARINE WARFARE,WASHINGTON,DC 20375, 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 APR PY 1995 VL 36 IS 4 BP 92 EP 93 PG 2 WC Engineering, Ocean SC Engineering GA QU451 UT WOS:A1995QU45100015 ER PT J AU BROWN, IP WILLIAMS, RL MCKIRNAN, MD LIMJOCO, UR GRAY, CG AF BROWN, IP WILLIAMS, RL MCKIRNAN, MD LIMJOCO, UR GRAY, CG TI NITRIC-OXIDE SYNTHESIS INHIBITION DOES NOT IMPROVE THE HEMODYNAMIC-RESPONSE TO HEMORRHAGIC-SHOCK IN DEHYDRATED CONSCIOUS SWINE SO SHOCK LA English DT Article ID HYPOXIC CORONARY VASODILATATION; VASCULAR ENDOTHELIAL-CELLS; GUINEA-PIG HEART; L-ARGININE; BLOOD-PRESSURE; ARTERIAL-PRESSURE; RELAXING FACTOR; SYNTHASE; RELEASE; FLOW AB Nitric oxide (NO) may influence the hemodynamic response to hemorrhage. To test this hypothesis, the NO synthesis inhibitor N-omega-nitro-L-arginine methyl ester (L-NAME) was administered to conscious, dehydrated swine during a 37% blood volume hemorrhage and a 180 min recovery period without fluid resuscitation. L-NAME (.75 mg/kg bolus plus. constant infusion of .75 mg/kg/h) was given via a central intravenous catheter during the bleed. The selectivity and specificity of L-NAME as a NO synthesis inhibitor in pigs was validated in pilot studies. The present study shows that inhibition of NO synthesis with L-NAME had no significant effect on the major hemodynamic parameters during and after hemorrhage when compared to dehydrated and euhydrated control groups. Only stroke volume and A-Vo(2) were significantly different from controls. Mortality was 83% for the L-NAME group and 44% for controls at 180 min of recovery (NS). The results suggest that NO synthesis inhibition provides no hemodynamic benefit during hemorrhage in dehydrated, conscious swine. C1 USN,MED CTR,DEPT CLIN INVEST,SAN DIEGO,CA 92134. USN,MED CTR,DEPT GEN SURG,SAN DIEGO,CA 92134. RP BROWN, IP (reprint author), UNIV CALIF SAN DIEGO,DEPT PATHOL 0612,9500 GILMAN DR,SAN DIEGO,CA 92093, USA. NR 35 TC 22 Z9 23 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 APR PY 1995 VL 3 IS 4 BP 292 EP 298 DI 10.1097/00024382-199504000-00008 PG 7 WC Critical Care Medicine; Hematology; Surgery; Peripheral Vascular Disease SC General & Internal Medicine; Hematology; Surgery; Cardiovascular System & Cardiology GA QT198 UT WOS:A1995QT19800008 PM 7600196 ER PT J AU WANG, YM AF WANG, YM TI LATITUDE AND SOLAR-CYCLE DEPENDENCE OF RADIAL IMF INTENSITY SO SPACE SCIENCE REVIEWS LA English DT Review DE HELIOSPHERE; LATITUDE EFFECTS; MAGNETIC FIELDS; SOLAR CYCLE; ULYSSES ID INTERPLANETARY MAGNETIC-FIELD; STRENGTH AB I describe a simple procedure for extrapolating the observed solar magnetic field into the heliosphere, which averages the asymptotic fields computed using the standard ''source surface'' and ''current sheet'' models. The resultant field is characterized by strong latitudinal gradients (maintained by volume currents outside the source surface) and by abrupt reversals in direction at the current sheets. The model yields good agreement with the observed long-term variation of the radial IMF component in the ecliptic, and is used to predict the variation of \Br-\ along the latitudinal trajectory of Ulysses during 1990-1994. As found in earlier studies, the magnitude of B-r at any latitude is determined largely by the strength and relative orientation of the Sun's dipole moment. RP USN, RES LAB, EO HULBURT CTR SPACE RES, CODE 7672W, WASHINGTON, DC 20375 USA. NR 7 TC 8 Z9 8 U1 0 U2 0 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 0038-6308 EI 1572-9672 J9 SPACE SCI REV JI Space Sci. Rev. PD APR PY 1995 VL 72 IS 1-2 BP 193 EP 196 DI 10.1007/BF00768778 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QU893 UT WOS:A1995QU89300034 ER PT J AU COLLINS, GE LATTURNER, S ROSEPEHRSSON, SL AF COLLINS, GE LATTURNER, S ROSEPEHRSSON, SL TI CHEMILUMINESCENCE DETECTION OF HYDRAZINE VAPOR SO TALANTA LA English DT Article ID CHEMI-LUMINESCENCE; HYDROGEN-PEROXIDE; IRON(II); LUMINOL AB An efficient, real-time chemiluminescence detector for hydrazine vapor, N2H4(g), is described, capable of monitoring sub part-per-billion levels of hydrazine in air. The catalytic oxidation of hydrazine by colloidal platinum forms an intermediate, oxidizing agent (e.g. (OH)-O-. or (OOH)-O-.) which subsequently oxidizes luminol, generating a chemiluminescence signal that is proportional to the hydrazine concentration. Major components of the instrument include a photomultiplier tube (PMT), a short length of glass tubing coiled directly in front of the PMT cathode surface, a vacuum pump For sampling the air, and a peristaltic pump for circulating the liquid reagent. The liquid reagent, a basic solution (pH 13) of Luminol and colloidal platinum, is continuously recycled. The detection sequence is initiated by pumping the hydrazine vapor through a short length of teflon tubing that is concurrently transporting the liquid reagent. The liquid is separated from the gas stream in an impinger and quickly pumped to the PMT. We have evaluated the effect of solution pH, luminol and platinum concentrations, and air and liquid Row rates on the analytical characteristics of this system. A linear, dynamic detection range for hydrazine has been obtained from 1 to 2000 ppb in air, with an instrument response that is fully reversible and achieves plateau response in less than 2 min. C1 UNIV CALIF SANTA BARBARA,DEPT CHEM,SANTA BARBARA,CA 93106. RP COLLINS, GE (reprint author), USN,RES LAB,DIV CHEM,CODE 6110,WASHINGTON,DC 20375, USA. NR 23 TC 21 Z9 24 U1 1 U2 4 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0039-9140 J9 TALANTA JI Talanta PD APR PY 1995 VL 42 IS 4 BP 543 EP 551 DI 10.1016/0039-9140(95)01443-F PG 9 WC Chemistry, Analytical SC Chemistry GA QV784 UT WOS:A1995QV78400006 PM 18966262 ER PT J AU SEITZMAN, LE BOLSTER, RN SINGER, IL WEGAND, JC AF SEITZMAN, LE BOLSTER, RN SINGER, IL WEGAND, JC TI RELATIONSHIP OF ENDURANCE TO MICROSTRUCTURE OF IBAD MOS2 COATINGS SO TRIBOLOGY TRANSACTIONS LA English DT Article DE SOLID LUBRICANTS; MOLYBDENUM DISULFIDE; SURFACE COATINGS; XRD; WEAR, AND FAILURE ID BEAM-ASSISTED DEPOSITION; LUBRICATION PROPERTIES; ION-BOMBARDMENT; FILMS; FRICTION; STEEL; LIFE; WEAR AB The endurance of ion-beam-assist-deposited (IBAD) MoS2 is correlated with coating structure and orientation. Structure and orientation are determined by X-ray diffraction, while endurance is measured with a ball-on-disk tribometer operating in dry air. The IBAD MoS2 coatings contain both crystalline and non-crystalline components. Only two orientations of the crystalline component are observed: the (001) planes parallel (basal orientation) and perpendicular (edge orientation) to the surface. Endurance of the coating is not related to coating thickness or substrate chemistry, but is related to the relative amount of the two MoS2 crystal orientations. Coating endurance decreases with increasing edge (100) intensity. Furthermore, MoS2 coatings with poor cystallinity exhibit good endurance. These results are discussed in terms of a possible oxidative wear mechanism and stress-induced Basal re-orientation of the non-crystalline IBAD MoS2. C1 GEOCENTERS INC,FT WASHINGTON,MD 20744. RP SEITZMAN, LE (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 38 TC 24 Z9 24 U1 0 U2 3 PU SOC TRIBOLOGISTS & LUBRICATION ENGINEERS PI PARK RIDGE PA 838 BUSSE HIGHWAY, PARK RIDGE, IL 60068 SN 0569-8197 J9 TRIBOL T JI Tribol. Trans. PD APR PY 1995 VL 38 IS 2 BP 445 EP 451 DI 10.1080/10402009508983427 PG 7 WC Engineering, Mechanical SC Engineering GA QP544 UT WOS:A1995QP54400031 ER PT J AU CAMPBELL, ML MCCLEAN, RE HARTER, JSS AF CAMPBELL, ML MCCLEAN, RE HARTER, JSS TI REACTION-KINETICS OF MO(A(7)S(3), A(5)S(2), A(5)D(J), A(5)G(J)) WITH O-2 SO CHEMICAL PHYSICS LETTERS LA English DT Article ID TRANSITION-METAL ATOMS; SPIN-ORBIT STATE; CHEMI-LUMINESCENT; GAS-PHASE AB The gas phase reactivities of Mo(a(7)S(3) a(5)S(2), a(5)D(J), a(5)G(J)) with O-2 in the temperature range 297-620 K are reported. Mo atoms were produced by the photodissociation of Mo(CO)(6) and MoCl4 and detected by laser-induced fluorescence. The disappearance rates of all states are found to be pressure independent with argon buffer gas. The disappearance rate constants of the s(1)d(5) a(7)S(3), a(5)S(2) and a (5)G(J), states are on the order of the gas kinetic rate constant. The s(2)d(4) a(5)D(J) states are not as reactive and are found to be temperature dependent. Results are discussed in terms of the different electron configurations of the states. RP CAMPBELL, ML (reprint author), USN ACAD,DEPT CHEM,ANNAPOLIS,MD 21402, USA. NR 13 TC 32 Z9 32 U1 0 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0009-2614 J9 CHEM PHYS LETT JI Chem. Phys. Lett. PD MAR 31 PY 1995 VL 235 IS 5-6 BP 497 EP 502 DI 10.1016/0009-2614(95)00165-Z PG 6 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA QP344 UT WOS:A1995QP34400016 ER PT J AU RAMAKER, DE FRY, RA IDZERDA, YU AF RAMAKER, DE FRY, RA IDZERDA, YU TI ANGLE-RESOLVED AUGER-ELECTRON SPECTROSCOPY - AN ALTERNATE TOOL FOR IDENTIFYING ELECTRONIC EXCITATION PROCESSES IN SOLIDS SO JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA LA English DT Article; Proceedings Paper CT 3rd International Workshop on Auger Spectroscopy and Electronic Structure (IWASES III) CY SEP 04-08, 1994 CL UNIV LIVERPOOL, LIVERPOOL, ENGLAND HO UNIV LIVERPOOL ID X-RAY PHOTOELECTRON; ANGULAR-DISTRIBUTION; SPIN POLARIZATION; IMPACT IONIZATION; ENERGY AUGER; SCATTERING; EMISSION; DIFFRACTION; SURFACE; COPPER AB Angle resolved Auger electron spectroscopy (ARAES) is shown to be a useful tool for obtaining unique electronic structure information and identifying ''satellite'' excitation processes in solids. Although relatively unexplored, ARAES is an attractive tool which may complement the more conventional energy resolved AES. The ARAES method is successful because the diffraction patterns exhibited in ARAES at fixed energy are strongly dependent on the l-wave of the emitted electron and its magnetic alignment, and each Auger process is generally dominated by a different single l-wave. Potential applications for elucidating satellite excitation processes (resonant excitation, shakeup/shakeoff, and backscattering), one- and two-center decay processes, and electronic structure (directional valence bonds and orbital magnetic moments) at surfaces are discussed. C1 GEORGE WASHINGTON UNIV,DEPT CHEM,WASHINGTON,DC 20052. USN,RES LAB,WASHINGTON,DC 20375. RP RAMAKER, DE (reprint author), GEORGE WASHINGTON UNIV,INST MAT SCI,WASHINGTON,DC 20052, USA. NR 82 TC 9 Z9 9 U1 0 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0368-2048 J9 J ELECTRON SPECTROSC JI J. Electron Spectrosc. Relat. Phenom. PD MAR 31 PY 1995 VL 72 BP 169 EP 179 DI 10.1016/0368-2048(94)02317-4 PG 11 WC Spectroscopy SC Spectroscopy GA QR253 UT WOS:A1995QR25300028 ER PT J AU VANCOTT, TC GASYNA, Z SCHATZ, PN BOYLE, ME AF VANCOTT, TC GASYNA, Z SCHATZ, PN BOYLE, ME TI MAGNETIC CIRCULAR-DICHROISM AND ABSORPTION-SPECTRA OF LUTETIUM BIS(PHTHALOCYANINE) ISOLATED IN AN ARGON MATRIX SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article ID DIMENSIONAL MOLECULAR SEMICONDUCTOR; FIELD-EFFECT TRANSISTORS; VIBRONIC COUPLING MODEL; DIPHTHALOCYANINE FILMS; ZINC PHTHALOCYANINE; THIN-FILMS; SPECTROSCOPIC CHARACTERIZATION; ELECTROCHROMIC PROPERTIES; ELECTRICAL-PROPERTIES; HOLE DELOCALIZATION AB The magnetic circular dichroism (MCD) and absorption spectra of lutetium bis(phthalocyanine) (LuPc(2)) are reported in an argon matrix at similar to 7 K over the range 5 000-60 000 cm(-1). The better spectral resolution of the species isolated in an argon matrix, combined with determination of excited-state symmetries by MCD, permits an assignment of the main electronic transitions. The experimental data are compared with the valence effective Hamiltonian calculations of Orti et al. and the localized orbital calculations of Ishikawa et al. The spectra support the view that LuPc(2) is a delocalized mixed-valence system. C1 UNIV VIRGINIA,DEPT CHEM,CHARLOTTESVILLE,VA 22901. USN,RES LAB,MAT CHEM BRANCH,WASHINGTON,DC 20375. NR 67 TC 23 Z9 23 U1 1 U2 4 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 MAR 30 PY 1995 VL 99 IS 13 BP 4820 EP 4830 DI 10.1021/j100013a061 PG 11 WC Chemistry, Physical SC Chemistry GA QQ601 UT WOS:A1995QQ60100061 ER PT J AU QADRI, SB HORWITZ, JS CHRISEY, DB AUYEUNG, RCY GRABOWSKI, KS AF QADRI, SB HORWITZ, JS CHRISEY, DB AUYEUNG, RCY GRABOWSKI, KS TI X-RAY CHARACTERIZATION OF EXTREMELY HIGH-QUALITY (SR,BA)TIO3 FILMS GROWN BY PULSED-LASER DEPOSITION SO APPLIED PHYSICS LETTERS LA English DT Article ID THIN-FILMS; EVAPORATION RP QADRI, SB (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. OI Grabowski, Kenneth/0000-0003-0816-001X NR 15 TC 26 Z9 26 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 MAR 27 PY 1995 VL 66 IS 13 BP 1605 EP 1607 DI 10.1063/1.113866 PG 3 WC Physics, Applied SC Physics GA QN767 UT WOS:A1995QN76700011 ER PT J AU WALTERS, DL AF WALTERS, DL TI MEASUREMENTS OF OPTICAL TURBULENCE WITH HIGHER-ORDER STRUCTURE FUNCTIONS SO APPLIED OPTICS LA English DT Article AB Higher-order structure functions have been used to extract atmospheric optical C-n(2) profiles from a vertical sequence of temperature data collected by a single probe carried by a meteorological balloon. This technique circumvents trends and fluctuations in the atmospheric mean temperature and simplifies the equipment and complexity of measurement collection compared with traditional, horizontal differential-probe pair systems. RP WALTERS, DL (reprint author), USN,POSTGRAD SCH,DEPT PHYS,MONTEREY,CA 93943, USA. NR 15 TC 5 Z9 5 U1 0 U2 0 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD MAR 20 PY 1995 VL 34 IS 9 BP 1591 EP 1597 PG 7 WC Optics SC Optics GA QM282 UT WOS:A1995QM28200018 PM 21037700 ER PT J AU SPRUNT, S NACIRI, J RATNA, BR SHASHIDHAR, R BIHARI, B KUMAR, J TRIPATHY, SK AF SPRUNT, S NACIRI, J RATNA, BR SHASHIDHAR, R BIHARI, B KUMAR, J TRIPATHY, SK TI LARGE AND STABLE 2ND-HARMONIC GENERATION IN A CRYSTALLINE PHASE OF A FERROELECTRIC LIQUID-CRYSTAL SO APPLIED PHYSICS LETTERS LA English DT Article C1 UNIV LOWELL,DEPT CHEM,CTR ADV MAT,LOWELL,MA 01854. RP SPRUNT, S (reprint author), USN,RES LAB,CTR BIOMOLEC SCI & ENGN,WASHINGTON,DC 20375, USA. NR 12 TC 10 Z9 10 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 MAR 20 PY 1995 VL 66 IS 12 BP 1443 EP 1445 DI 10.1063/1.113648 PG 3 WC Physics, Applied SC Physics GA QM485 UT WOS:A1995QM48500001 ER PT J AU ROWLAND, LB DOVERSPIKE, K GASKILL, DK AF ROWLAND, LB DOVERSPIKE, K GASKILL, DK TI SILICON DOPING OF GAN USING DISILANE SO APPLIED PHYSICS LETTERS LA English DT Article ID CHEMICAL VAPOR-DEPOSITION; GAAS; MOVPE C1 USN,RES LAB,ADV MAT SYNTH LAB,WASHINGTON,DC 20375. RI Rowland, Larry/C-4487-2008 NR 16 TC 42 Z9 43 U1 0 U2 10 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD MAR 20 PY 1995 VL 66 IS 12 BP 1495 EP 1497 DI 10.1063/1.113666 PG 3 WC Physics, Applied SC Physics GA QM485 UT WOS:A1995QM48500019 ER PT J AU COLLISON, AJ NEDOLUHA, GE AF COLLISON, AJ NEDOLUHA, GE TI A NONLOCAL CALCULATION OF CIRCUMSTELLAR OH MASER EMISSION SO ASTROPHYSICAL JOURNAL LA English DT Article DE CIRCUMSTELLAR MATTER; MASERS; MOLECULAR PROCESSES; STARS, LATE-TYPE ID ASTROPHYSICAL MASERS; OH/IR STARS; IR STARS; VLA OBSERVATIONS; MIRA VARIABLES; DUST FORMATION; LINE OVERLAP; VLBI MAPS; U-ORIONIS; ENVELOPES AB We present calculations for circumstellar OH masers which explicitly account for the nonlocal interaction throughout the masing region. Excitation temperatures and the observed emission are calculated for all four ground-state maser lines. All other transitions, including far-infrared and excited state microwave transitions, are treated using a modified Sobolev approximation for the lowest 24 hyperfine levels. Calculations are performed within the context of a simplified, self-consistent dust/outflow model which provides the pumping conditions and their variation with radius. Total velocity relaxation is implicitly assumed. We, find general agreement with the qualitative results of earlier work (Collison & Nedoluha 1994) and agree with the conclusions of Alcock & Ross (1986b) who showed that observed profiles cannot be produced by the ''standard model'' description of a smooth, spherically symmetric, steady, windlike mass loss. Alternative descriptions of the circumstellar outflow are discussed, and it is shown that the observed maser line profiles cannot be explained by minor changes to the standard model. Instead, a combination of significant clumping, sporadic mass loss, and/or deviations from spherical symmetry are required. The sensitive dependence of the observed emission on the physical conditions within the circumstellar shell implies that detailed information can be obtained by self-consistent modeling of both the outflow and the OH masers. Such models will require a method for solving the maser radiative transfer within a clumpy, possibly turbulent, medium. C1 USN,RES LAB,DIV REMOTE SENSING,WASHINGTON,DC 20375. NR 59 TC 13 Z9 13 U1 0 U2 0 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD MAR 20 PY 1995 VL 442 IS 1 BP 311 EP 327 DI 10.1086/175442 PN 1 PG 17 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QM747 UT WOS:A1995QM74700027 ER PT J AU WIDING, KG FELDMAN, U AF WIDING, KG FELDMAN, U TI ABUNDANCE RATIOS OF OXYGEN, NEON, AND MAGNESIUM IN SOLAR ACTIVE REGIONS AND FLARES - THE FIP EFFECT SO ASTROPHYSICAL JOURNAL LA English DT Article DE SUN, ABUNDANCES; SUN, ACTIVITY; SUN, FLARES; SUN, PROMINENCES; SUN, UV RADIATION ID ELEMENTAL ABUNDANCES; ENERGETIC PARTICLES; PHOTOSPHERIC ABUNDANCES; ATMOSPHERE; SPECTRUM; PLASMA; SKYLAB AB Relative abundances of oxygen, neon, and magnesium have been derived for a sample of nine solar active regions, flares, and an erupting prominence by combining plots of the ion differential emission measures. The observations were photographed in the 300-600 Angstrom range by the NRL spectroheliograph on Skylab. Methods for deriving the Mg/Ne abundance ratio-which measures the separation between the low-FIP and high-FIP abundance plateaus-have been described in previous papers. In this paper we describe the spectroscopic methods for deriving the O/Ne abundance ratio, which gives the ratio between two high-FIP elements. The plot of the O/Ne ratio versus the Mg/Ne ratio in the sample of nine Skylab events is shown. The variation in the Mg/Ne ratio by a factor of 6 is associated with a much smaller range in the O/Ne ratio. This is broadly consistent with the presence of the standard FIP pattern of abundances in the outer atmosphere of the Sun. However, a real change in the relative abundances of oxygen and neon by a factor of 1.5 cannot be excluded. RP WIDING, KG (reprint author), USN,RES LAB,EO HULBURT CTR SPACE RES,WASHINGTON,DC 20375, USA. NR 26 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 MAR 20 PY 1995 VL 442 IS 1 BP 446 EP 450 DI 10.1086/175452 PN 1 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QM747 UT WOS:A1995QM74700037 ER PT J AU FUENTE, A MARTINPINTADO, J GAUME, R AF FUENTE, A MARTINPINTADO, J GAUME, R TI HIGH-DENSITY CN FILAMENTS IN NGC-2023 SO ASTROPHYSICAL JOURNAL LA English DT Article DE ISM, ABUNDANCES; ISM, INDIVIDUAL, NGC 2023; STARS, EARLY-TYPE; STARS, INDIVIDUAL; HD 37903 ID COLLISIONAL EXCITATION; MOLECULAR CLOUDS; EMISSION; NGC-2023 AB We report high angular resolution observations of CN, SO, and HCN toward the reflection nebula NGC 2023. The CN data reveal the existence of high-density gas (n > 10(5) cm(-3)) close to the illuminating star (less than or similar to 0.13 pc) which is not detected in HCN or SO. Since the spatial distribution of the dense gas is similar to that of the vibrationally excited H-2 fluorescent emission, we propose that this dense gas is located in the inner walls of the cavity photodissociated by the illuminating star. The CN/HCN abundance ratio is a factor of similar to 25 larger in these dense gas layers than in the bulk of the molecular cloud, suggesting that CN is especially abundant in regions exposed to UV radiation. Thus, the CN/HCN abundance ratio is a good tracer of enhanced UV fields. C1 USN OBSERV,WASHINGTON,DC 20392. RP FUENTE, A (reprint author), CTR ASTRON YEBES,APARTADO 148,E-19080 GUADALAJARA,SPAIN. RI Fuente, Asuncion/G-1468-2016; Martin-Pintado, Jesus/H-6107-2015 OI Fuente, Asuncion/0000-0001-6317-6343; Martin-Pintado, Jesus/0000-0003-4561-3508 NR 16 TC 41 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 MAR 20 PY 1995 VL 442 IS 1 BP L33 EP L36 DI 10.1086/187809 PN 2 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QM748 UT WOS:A1995QM74800009 ER PT J AU MEHRINGER, DM DEPREE, CG GAUME, RA GOSS, WM CLAUSSEN, MJ AF MEHRINGER, DM DEPREE, CG GAUME, RA GOSS, WM CLAUSSEN, MJ TI VERY HOT IONIZED MATERIAL IN SAGITTARIUS-B2-F SO ASTROPHYSICAL JOURNAL LA English DT Article DE H II REGIONS; ISM, INDIVIDUAL, SAGITTARIUS B2 F; RADIO CONTINUUM, ISM; RADIO LINES, ISM ID RECOMBINATION LINE OBSERVATIONS; RADIO-CONTINUUM; RESOLUTION; HELIUM; MODELS; WIND AB VLA 20 cm continuum observations (2'' x 1'' resolution) of the Sgr B2 star-forming region have been carried out. The peak intensity, which occurs at the location of the Sgr B2 F complex of H II regions, corresponds to a brightness temperature of 23,000 K. The continuum spectrum appears to be thermal; thus the brightness temperature provides a lower limit to the electron temperature. The H66 alpha recombination lines (v = 22.4 GHz) in this region also suggest that the temperature is high. The LTE electron temperature derived from the H66 alpha data is 19,600 K. It is unclear what the heating mechanism is, although a highly nonequilibrium situation which occurs at the edge of the expanding ionization front might be responsible. C1 NATL RADIO ASTRON OBSERV,SOCORRO,NM 87801. UNIV N CAROLINA,CHAPEL HILL,NC. USN OBSERV,WASHINGTON,DC 20392. RP MEHRINGER, DM (reprint author), UNIV ILLINOIS,210 ASTRON BLDG,1002 W GREEN ST,URBANA,IL 61801, USA. NR 18 TC 10 Z9 10 U1 0 U2 0 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD MAR 20 PY 1995 VL 442 IS 1 BP L29 EP L31 DI 10.1086/187808 PN 2 PG 3 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QM748 UT WOS:A1995QM74800008 ER PT J AU PEDERSON, MR QUONG, AA AF PEDERSON, MR QUONG, AA TI FULLERENE DIMERS - COHESIVE ENERGY, ELECTRONIC-STRUCTURE, AND VIBRATIONAL-MODES SO PHYSICAL REVIEW LETTERS LA English DT Article ID C-60; SIMULATIONS C1 SANDIA LIVERMORE NATL LAB,LIVERMORE,CA 94551. RP PEDERSON, MR (reprint author), USN,RES LAB,COMPLEX SYST THEORY BRANCH,WASHINGTON,DC 20375, USA. NR 21 TC 50 Z9 50 U1 0 U2 3 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 MAR 20 PY 1995 VL 74 IS 12 BP 2319 EP 2322 DI 10.1103/PhysRevLett.74.2319 PG 4 WC Physics, Multidisciplinary SC Physics GA QM943 UT WOS:A1995QM94300043 ER PT J AU PIERSON, SW AF PIERSON, SW TI I-T PHASE-DIAGRAM OF VORTICES IN LAYERED SUPERCONDUCTORS SO PHYSICAL REVIEW LETTERS LA English DT Article ID SINGLE-CRYSTALS; FILMS; FLUCTUATIONS RP PIERSON, SW (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 17 TC 40 Z9 40 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 MAR 20 PY 1995 VL 74 IS 12 BP 2359 EP 2362 DI 10.1103/PhysRevLett.74.2359 PG 4 WC Physics, Multidisciplinary SC Physics GA QM943 UT WOS:A1995QM94300053 ER PT J AU PARK, GS CHOI, JJ PARK, SY ARMSTRONG, CM GANGULY, AK KYSER, RH PARKER, RK AF PARK, GS CHOI, JJ PARK, SY ARMSTRONG, CM GANGULY, AK KYSER, RH PARKER, RK TI GAIN BROADENING OF 2-STAGE TAPERED GYROTRON TRAVELING-WAVE TUBE AMPLIFIER SO PHYSICAL REVIEW LETTERS LA English DT Article ID LARGE-SIGNAL THEORY RP PARK, GS (reprint author), USN,RES LAB,CODE 6840,WASHINGTON,DC 20375, USA. RI Park, Gunsik/A-1415-2014 NR 8 TC 77 Z9 79 U1 0 U2 3 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 MAR 20 PY 1995 VL 74 IS 12 BP 2399 EP 2402 DI 10.1103/PhysRevLett.74.2399 PG 4 WC Physics, Multidisciplinary SC Physics GA QM943 UT WOS:A1995QM94300063 ER PT J AU HOFF, HA WAYTENA, GL GLESENER, JW HARRIS, VG PAPPAS, DP AF HOFF, HA WAYTENA, GL GLESENER, JW HARRIS, VG PAPPAS, DP TI CRITICAL THICKNESS OF SINGLE-CRYSTAL FCC IRON ON DIAMOND SO SURFACE SCIENCE LA English DT Article DE COPPER; DIAMOND; EXTENDED X-RAY ABSORPTION FINE STRUCTURE (EXAFS); IRON; LOW INDEX SINGLE CRYSTAL SURFACES; REFLECTION HIGH-ENERGY ELECTRON DIFFRACTION (RHEED); SURFACE STRUCTURE; SURFACE TENSION ID EPITAXIAL MULTILAYERS; PARTIAL DISLOCATIONS; MISFIT DISLOCATIONS; STRAINED LAYERS; FE FILMS; GAMMA-FE; CU(100); SUPERLATTICES; SPECTROSCOPY; RELAXATION AB The growth of (100) diamond/iron/copper multilayer structures has been examined by reflection high energy electron diffraction, extended X-ray absorption fine structure, and scanning electron microscopy in an effort to determine the thickness limit for metastable face-centered-cubic Fe on (100) diamond. Both copper films deposited on iron layers with thicknesses below 1.4 nm and the iron layers themselves were found to be face-centered cubic single crystal, while films grown on iron that was 2.0 nm and thicker and the iron itself were found to be polycrystalline. This critical thickness range of 1.4-2.0 nm compares well with the theoretically calculated value of 1.8 nm. This value was determined using the mechanical equilibrium theories (Matthews-Blakeslee and van der Merwe) with a lattice parameter for face-centered cubic iron that was derived by estimating the functional form of the linear thermal expansion coefficient and extrapolating the Poisson's ratio for austenitic stainless steel to the temperature of interest. The shear modulus, and intrinsic stacking fault energy for fcc Fe from similar to 1350 degrees C down to below room temperature have also been estimated. A more likely room temperature lattice parameter for fcc Fe than is usually assumed was estimated to be 0.3579 nm. The measured in-plane lattice parameter of strained fcc Fe on diamond was 3.54 +/- 0.1 Angstrom. C1 VIRGINIA COMMONWEALTH UNIV,RICHMOND,VA 23284. RP HOFF, HA (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. RI Harris, Vincent/A-8337-2009 NR 57 TC 4 Z9 4 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0039-6028 J9 SURF SCI JI Surf. Sci. PD MAR 20 PY 1995 VL 326 IS 3 BP 252 EP 266 DI 10.1016/0039-6028(94)00787-X PG 15 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA QN626 UT WOS:A1995QN62600011 ER PT J AU ZHANG, Q BROWN, DA KUNG, H TOWNSEND, JE CHEN, M REINHART, LJ MORSE, TF AF ZHANG, Q BROWN, DA KUNG, H TOWNSEND, JE CHEN, M REINHART, LJ MORSE, TF TI USE OF HIGHLY OVERCOUPLED COUPLERS TO DETECT SHIFTS IN BRAGG WAVELENGTH SO ELECTRONICS LETTERS LA English DT Article DE OPTICAL COUPLERS; GRATINGS IN FIBERS AB The authors present a technique for detecting Bragg wavelength shifts using highly overcoupled couplers (HOCC). An HOCC of 60%/nm was fabricated with 626 cycles. With our HOCC, a 5 mu W LED and a 95% reflective Bragg grating we were able to detect 10 mu strain (Delta lambda = 0.01 nm). C1 USN,POSTGRAD SCH,DEPT PHYS,MONTEREY,CA 93943. RP ZHANG, Q (reprint author), BROWN UNIV,DIV ENGN,LIGHTWAVE TECHNOL LAB,PROVIDENCE,RI 02912, USA. NR 8 TC 25 Z9 29 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 MAR 16 PY 1995 VL 31 IS 6 BP 480 EP 482 DI 10.1049/el:19950292 PG 3 WC Engineering, Electrical & Electronic SC Engineering GA QQ517 UT WOS:A1995QQ51700047 ER PT J AU GEORGE, C PURDY, A AF GEORGE, C PURDY, A TI 1,3,5,7-TETRAKIS(TRIFLUOROMETHYL)-2,6-DIOXABICYCLO[3.3.0]OCTANE-3,7-DIOL SO ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS LA English DT Article AB There are two molecules in the asymmetric unit of C10H6F12O4 that differ primarily in their packing and hydrogen bonding. The molecules are linked in groups of four by the hydrogen bonding between the hydroxyls about an inversion center. In one of the independent molecules, one hydroxyl is a hydrogen donor and the other is an acceptor, while in the second molecule the hydroxyls act as both donor and acceptor. C1 USN,RES LAB,DIV CHEM,WASHINGTON,DC 20375. RP GEORGE, C (reprint author), USN,RES LAB,STRUCT MATTER LAB,WASHINGTON,DC 20375, USA. NR 7 TC 0 Z9 0 U1 0 U2 1 PU MUNKSGAARD INT PUBL LTD PI COPENHAGEN PA 35 NORRE SOGADE, PO BOX 2148, DK-1016 COPENHAGEN, DENMARK SN 0108-2701 J9 ACTA CRYSTALLOGR C JI Acta Crystallogr. Sect. C-Cryst. Struct. Commun. PD MAR 15 PY 1995 VL 51 BP 445 EP 447 DI 10.1107/S0108270194007511 PN 3 PG 3 WC Chemistry, Multidisciplinary; Crystallography SC Chemistry; Crystallography GA QN634 UT WOS:A1995QN63400037 ER PT J AU SCHMIDT, PP AF SCHMIDT, PP TI SELF-CONSISTENT METHODS FOR THE TREATMENT OF LOW-LYING MOLECULAR VIBRATIONS SO INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY LA English DT Article ID CARTESIAN GAUSSIAN FUNCTIONS; TRIATOMIC-MOLECULES; FIELD METHOD; ENERGIES; HCN; INTEGRALS; SPECTRUM; HYDROGEN; STATES; JACOBI AB The subject of this article is the self-consistent-field (SCF) treatment of low-lying molecular vibrations in molecules subject to solvent effects and light atom migration. The analyses use a Cartesian Gaussian basis and Gaussian functional expansions of potential energy operators. The objective of the work was to establish approximate and practical methods of analysis of vibrational degrees of freedom in molecules that build on and compare well with the highly accurate treatments of vibrations in small molecular systems of the past decade. An application to a system in which hydrogen bonding contributes the major anharmonic effect illustrates the method. (C) 1995 John Wiley & Sons, Inc. RP SCHMIDT, PP (reprint author), OFF NAVAL RES,800 N QUINCY ST,ARLINGTON,VA 22217, USA. NR 42 TC 5 Z9 5 U1 0 U2 0 PU JOHN WILEY & SONS INC PI NEW YORK PA 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0020-7608 J9 INT J QUANTUM CHEM JI Int. J. Quantum Chem. PD MAR 15 PY 1995 VL 53 IS 6 BP 635 EP 649 DI 10.1002/qua.560530607 PG 15 WC Chemistry, Physical; Mathematics, Interdisciplinary Applications; Physics, Atomic, Molecular & Chemical SC Chemistry; Mathematics; Physics GA QF591 UT WOS:A1995QF59100006 ER PT J AU SCHMIDT, PP AF SCHMIDT, PP TI THE EVALUATION OF MATRIX-ELEMENTS IN THE ANALYSIS OF ANHARMONIC MOLECULAR VIBRATIONS - FUNCTIONAL TAYLOR-SERIES EXPANSIONS SO INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY LA English DT Article ID CARTESIAN GAUSSIAN FUNCTIONS; CONSISTENT-FIELD METHOD; TRIATOMIC-MOLECULES; ENERGIES; HCN; POTENTIALS; INTEGRALS; HYDROGEN; JACOBI; MODEL AB This article presents methods for computing Cartesian Gaussian matrix elements using a Taylor series for general potential energy operators that admit well-behaved radial derivatives. These operators arise in the analyses of anharmonic vibrations in molecules. Application to the evaluation of matrix elements for hydrogen associated two wells illustrates the method. (C) 1995 John Wiley & Sons, Inc. RP SCHMIDT, PP (reprint author), OFF NAVAL RES,800 N QUINCY ST,ARLINGTON,VA 22217, USA. NR 37 TC 4 Z9 4 U1 0 U2 1 PU JOHN WILEY & SONS INC PI NEW YORK PA 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0020-7608 J9 INT J QUANTUM CHEM JI Int. J. Quantum Chem. PD MAR 15 PY 1995 VL 53 IS 6 BP 651 EP 661 DI 10.1002/qua.560530608 PG 11 WC Chemistry, Physical; Mathematics, Interdisciplinary Applications; Physics, Atomic, Molecular & Chemical SC Chemistry; Mathematics; Physics GA QF591 UT WOS:A1995QF59100007 ER PT J AU SCHMIDT, PP AF SCHMIDT, PP TI THE EVALUATION OF MATRIX-ELEMENTS IN THE ANALYSIS OF ANHARMONIC MOLECULAR VIBRATIONS - OPTIMIZED EXPANSIONS AND QUADRATURES SO INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY LA English DT Article ID CARTESIAN GAUSSIAN FUNCTIONS; ENERGIES; POTENTIALS; INTEGRALS; MODEL; HCN AB This article presents methods for computing matrix elements with Cartesian Gaussian wave functions of potential energy operators that depend on functions of the form (r - r0)n exp[-a(r - r0)] as well as matrix elements of the class of polynomial many-body potentials developed by Murrell et al. The matrix elements arise in the analyses of anharmonic vibrations in molecules. (C) 1995 John Wiley & Sons, Inc. RP SCHMIDT, PP (reprint author), OFF NAVAL RES,800 N QUINCY ST,ARLINGTON,VA 22217, USA. NR 21 TC 5 Z9 5 U1 0 U2 0 PU JOHN WILEY & SONS INC PI NEW YORK PA 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0020-7608 J9 INT J QUANTUM CHEM JI Int. J. Quantum Chem. PD MAR 15 PY 1995 VL 53 IS 6 BP 663 EP 677 DI 10.1002/qua.560530609 PG 15 WC Chemistry, Physical; Mathematics, Interdisciplinary Applications; Physics, Atomic, Molecular & Chemical SC Chemistry; Mathematics; Physics GA QF591 UT WOS:A1995QF59100008 ER PT J AU BLANTON, CL SCHALLHOM, SC NG, JD GILBERT, BT WHITE, LJ PARMLEY, VC MADER, TH AF BLANTON, CL SCHALLHOM, SC NG, JD GILBERT, BT WHITE, LJ PARMLEY, VC MADER, TH TI REFRACTIVE CHANGES DURING PROLONGED EXPOSURE TO ALTITUDE FOLLOWING REFRACTIVE SURGERY SO INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE LA English DT Meeting Abstract C1 USN,MED CTR,DEPT OPHTHALMOL,SAN DIEGO,CA 92132. EISENHOWER ARMY MED CTR,DEPT OPHTHALMOL,FT GORDON,GA. MADIGAN ARMY MED CTR,DEPT OPHTHALMOL,TACOMA,WA 98431. CASCADE EYE & SKIN CTR,TACOMA,WA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQUARE, PHILADELPHIA, PA 19106 SN 0146-0404 J9 INVEST OPHTH VIS SCI JI Invest. Ophthalmol. Vis. Sci. PD MAR 15 PY 1995 VL 36 IS 4 BP S435 EP S435 PG 1 WC Ophthalmology SC Ophthalmology GA QM915 UT WOS:A1995QM91501990 ER PT J AU BRINSKO, KJ STILL, DL AF BRINSKO, KJ STILL, DL TI THE EFFECT OF SCORING ON VISUAL-ACUITY SO INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE LA English DT Meeting Abstract C1 NATL NAVAL MED CTR, DEPT OPHTHALMOL, BETHESDA, MD 20814 USA. USN, AEROSP MED RES INST, PENSACOLA, FL USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQUARE, PHILADELPHIA, PA 19106 SN 0146-0404 J9 INVEST OPHTH VIS SCI JI Invest. Ophthalmol. Vis. Sci. PD MAR 15 PY 1995 VL 36 IS 4 BP S943 EP S943 PG 1 WC Ophthalmology SC Ophthalmology GA QM915 UT WOS:A1995QM91504337 ER PT J AU LUNDY, DC SIDOTI, P WINARKO, T LEE, PP MINCKLER, DS HEUER, DK AF LUNDY, DC SIDOTI, P WINARKO, T LEE, PP MINCKLER, DS HEUER, DK TI INTRACAMERAL TISSUE-PLASMINOGEN ACTIVATOR (TPA) FOLLOWING GLAUCOMA SURGERY SO INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE LA English DT Meeting Abstract C1 USN,MED CTR,DEPT OPHTHALMOL,SAN DIEGO,CA 92132. NEW YORK EYE & EAR INFIRM,NEW YORK,NY 10003. UNIV SO CALIF,DOHENY EYE INST,LOS ANGELES,CA 90089. NR 0 TC 0 Z9 0 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQUARE, PHILADELPHIA, PA 19106 SN 0146-0404 J9 INVEST OPHTH VIS SCI JI Invest. Ophthalmol. Vis. Sci. PD MAR 15 PY 1995 VL 36 IS 4 BP S21 EP S21 PG 1 WC Ophthalmology SC Ophthalmology GA QM915 UT WOS:A1995QM91500089 ER PT J AU MUSCH, DC GARLAND, FC GARLAND, CF GORHAM, ED BALASZS, L AF MUSCH, DC GARLAND, FC GARLAND, CF GORHAM, ED BALASZS, L TI DESCRIPTIVE EPIDEMIOLOGY OF EYE INJURY REQUIRING HOSPITALIZATION IN US-NAVY ENLISTED PERSONNEL SO INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE LA English DT Meeting Abstract C1 UNIV MICHIGAN,DEPT OPHTHALMOL,ANN ARBOR,MI 48109. UNIV MICHIGAN,DEPT EPIDEMIOL,ANN ARBOR,MI 48109. USN,HLTH RES CTR,DEPT HLTH SCI & EPIDEMIOL,SAN DIEGO,CA 92132. UNIV CALIF SAN DIEGO,DEPT COMMUNITY & FAMILY MED,LA JOLLA,CA 92093. USN,HLTH RES CTR,DEPT OPERAT RES,SAN DIEGO,CA 92132. NR 0 TC 0 Z9 0 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQUARE, PHILADELPHIA, PA 19106 SN 0146-0404 J9 INVEST OPHTH VIS SCI JI Invest. Ophthalmol. Vis. Sci. PD MAR 15 PY 1995 VL 36 IS 4 BP S506 EP S506 PG 1 WC Ophthalmology SC Ophthalmology GA QM915 UT WOS:A1995QM91502339 ER PT J AU RAO, MV GRIFFITHS, P HOLLAND, OW KELNER, G FREITAS, JA SIMONS, DS CHI, PH GHEZZO, M AF RAO, MV GRIFFITHS, P HOLLAND, OW KELNER, G FREITAS, JA SIMONS, DS CHI, PH GHEZZO, M TI AL AND B ION-IMPLANTATIONS IN 6H-SIC AND 3C-SIC SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID CHEMICAL-VAPOR-DEPOSITION; BETA SILICON-CARBIDE; STOICHIOMETRIC DISTURBANCES; COMPOUND SEMICONDUCTORS; ELECTRICAL-PROPERTIES; JUNCTION DIODES; NITROGEN; BORON; PHOTOLUMINESCENCE; DEFECTS C1 OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. USN,RES LAB,WASHINGTON,DC 20375. NIST,GAITHERSBURG,MD 20899. GE CO,CORP RES & DEV,SCHENECTADY,NY 12301. RP RAO, MV (reprint author), GEORGE MASON UNIV,DEPT ELECT & COMP ENGN,FAIRFAX,VA 22030, USA. NR 51 TC 110 Z9 111 U1 3 U2 16 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 MAR 15 PY 1995 VL 77 IS 6 BP 2479 EP 2485 DI 10.1063/1.358776 PG 7 WC Physics, Applied SC Physics GA QN148 UT WOS:A1995QN14800038 ER PT J AU STUMBORG, MF SANTIAGO, F CHU, TK PRICE, JL LEIBOWITZ, JR AF STUMBORG, MF SANTIAGO, F CHU, TK PRICE, JL LEIBOWITZ, JR TI GROWTH AND INTERFACIAL CHEMISTRY OF INSULATING (100) BARIUM FLUORIDE ON GALLIUM-ARSENIDE SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID SURFACE-STRUCTURE; GAAS; GAAS(100); GAAS(001); EPITAXY; LEED C1 CATHOLIC UNIV AMER,WASHINGTON,DC 20064. RP STUMBORG, MF (reprint author), USN,CTR SURFACE WARFARE,WHITE OAK LAB,DAHLGREN DIV,SILVER SPRING,MD 20903, USA. NR 22 TC 6 Z9 6 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD MAR 15 PY 1995 VL 77 IS 6 BP 2739 EP 2744 DI 10.1063/1.358743 PG 6 WC Physics, Applied SC Physics GA QN148 UT WOS:A1995QN14800078 ER PT J AU OVERLAND, JE CURTIN, TB SMITH, WO AF OVERLAND, JE CURTIN, TB SMITH, WO TI LEADS AND POLYNYAS - PREFACE SO JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS LA English DT Editorial Material C1 OFF NAVAL RES,ARLINGTON,VA. UNIV TENNESSEE,GRAD PROGRAM ECOL,KNOXVILLE,TN 37996. RP OVERLAND, JE (reprint author), NOAA,PACIFIC MARINE ENVIRONM LAB,7600 SAND POINT WAY NE,SEATTLE,WA 98115, USA. NR 2 TC 4 Z9 4 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 MAR 15 PY 1995 VL 100 IS C3 BP 4267 EP 4268 DI 10.1029/95JC00336 PG 2 WC Oceanography SC Oceanography GA QN009 UT WOS:A1995QN00900001 ER PT J AU BURK, SD THOMPSON, WT AF BURK, SD THOMPSON, WT TI PASSAGE OF A SHALLOW FRONT ACROSS A BEAUFORT SEA POLYNYA SO JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS LA English DT Article ID MARGINAL ICE-ZONE; BOUNDARY-LAYER; CANADIAN ARCHIPELAGO; OCEAN INTERACTION; MODEL; PREDICTION; ATMOSPHERE; HEAT; COEFFICIENTS; LEADS AB A mesoscale numerical weather prediction model is used to investigate the passage of a shallow front across a polynya in the Beaufort Sea near Point Barrow, Alaska. In order to properly resolve the phenomena with the model's grid, the polynya is specified larger than actually observed, but otherwise this represents a real data case. Prior to frontal passage, a well-mixed boundary layer exists over the polynya to a depth of about 1.5 km, while following frontal passage, the frontal inversion acts to confine the strong fluxes to a depth of only a few hundred meters. The temporal behavior of surface stresses, heat fluxes, and two separate low-level jets are examined as the front passes over this large polynya. RP USN, RES LAB, DIV MARINE METEOROL, 7 GRACE HOPPER AVE, MONTEREY, CA 93943 USA. NR 25 TC 2 Z9 2 U1 0 U2 1 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 MAR 15 PY 1995 VL 100 IS C3 BP 4461 EP 4472 DI 10.1029/94JC02301 PG 12 WC Oceanography SC Oceanography GA QN009 UT WOS:A1995QN00900015 ER PT J AU OVERLAND, JE WALTER, BA CURTIN, TB TURET, P AF OVERLAND, JE WALTER, BA CURTIN, TB TURET, P TI HIERARCHY AND SEA-ICE MECHANICS - A CASE-STUDY FROM THE BEAUFORT SEA SO JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS LA English DT Article ID MICROMECHANICS MODEL; PRESSURE; DYNAMICS; FIELDS; FLOWS AB Hierarchy implies that the study of sea ice can be divided into analysis of subsets of processes based on scale and their interaction with adjacent scales. We apply these concepts to regional sea ice dynamics. The apparent self-similar property of ice floes seen in aircraft or satellite images argues for an aggregate nature of sea ice, that viscouslike regional behavior arises from discrete flee interactions. However, for some regions and some times, characteristic behavior, where lead patterns seen in basin-wide advanced very high resolution radiometer images appear to be related to coastal orientation hundreds of kilometers away, suggests that small regional scale processes O(10 km) and discontinuities in the velocity or stress state along boundaries can affect the larger-scale sea ice distribution and dynamics O(500 km). Thus sea ice displays both aggregate type behavior and discontinuous type behavior based on the history of forcing and shape of the enclosing basin. The appropriate matching of atmospheric processes to sea ice processes in air-ice interaction is through the sea ice deformation field rather than the response of ice velocity to the local wind. This is because atmospheric forcing and sea ice deformation have matching energetic scales at several hundred kilometers and timescales of days. An example of northerly winds during the April 1992 Arctic Leads Experiment period suggests discontinuous type behavior upwind of the Alaska coast followed by a general opening behavior with easterly winds. There appear to be natural scale divisions between climate scale sea ice processes of O(100-300 km) which resolve aggregate behavior, regional scale O(10-50 km) which is necessary to resolve observed shearing behavior, and the flee scale O(1 km). Because the climate scale is two levels removed from the flee scale, care must be exercised in using ice properties from the flee scale in climate scale models; ice strength is an example of such a scale dependent parameter. C1 SCI APPLICAT INT CORP,BELLEVUE,WA 98005. OFF NAVAL RES,ARLINGTON,VA 22217. NOAA,PACIFIC MARINE ENVIRONM LAB,SEATTLE,WA 98115. NR 27 TC 43 Z9 44 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-OCEANS JI J. Geophys. Res.-Oceans PD MAR 15 PY 1995 VL 100 IS C3 BP 4559 EP 4571 DI 10.1029/94JC02502 PG 13 WC Oceanography SC Oceanography GA QN009 UT WOS:A1995QN00900022 ER PT J AU GLENDENING, JW AF GLENDENING, JW TI HORIZONTALLY INTEGRATED ATMOSPHERIC HEAT-FLUX FROM AN ARCTIC LEAD SO JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS LA English DT Article ID LARGE-EDDY-SIMULATION; SEA ICE; MODEL; CLIMATE AB Vertical distribution of the horizontally integrated heat injected into the atmosphere by an Arctic lead is investigated, based upon large-eddy simulations of its convective plume. The horizontally integrated heat flux varies exponentially with height except under conditions of relatively weak cross how, when vertical advective transport becomes significant. Its vertical scale, which depends upon the lead size, surface heat flux, atmospheric stratification, and cross-lead wind component, is approximately one fourth of the maximum plume height, indicating that the depth of largest heat transfer is significantly shallower than the depth of the plume. A parameterization is developed to incorporate this small-scale heat injection into large-scale models which cannot resolve individual leads. The amount of heat recaptured by the ice downwind of a lead is significant when cross-lead flow is relatively strong and when the plume depth is shallow. RP GLENDENING, JW (reprint author), USN,RES LAB,DIV MARINE METEOROL,CODE 7541,MONTEREY,CA 93943, USA. NR 15 TC 19 Z9 19 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-OCEANS JI J. Geophys. Res.-Oceans PD MAR 15 PY 1995 VL 100 IS C3 BP 4613 EP 4620 DI 10.1029/94JC02424 PG 8 WC Oceanography SC Oceanography GA QN009 UT WOS:A1995QN00900026 ER PT J AU KINDLE, JC PHOEBUS, PA AF KINDLE, JC PHOEBUS, PA TI THE OCEAN RESPONSE TO OPERATIONAL WESTERLY WIND BURSTS DURING THE 1991-1992 EL-NINO SO JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS LA English DT Article ID ATMOSPHERIC PREDICTION SYSTEM; EQUATORIAL PACIFIC-OCEAN; KELVIN WAVES; SEA-LEVEL; SOUTHERN OSCILLATION; TROPICAL PACIFIC; MODEL AB Numerical simulations of the remotely forced ocean response to westerly wind bursts prior to and during the 1991-1992 El Ni (n) over tilde o are examined; the models are forced by wind stress from the U.S. Navy's atmospheric global operational analysis/forecast system. The study focuses on (1) the relative response of the first and second internal modes to a single episode of westerly bursts; (2) the role of westerly bursts in producing the eastern Pacific sea level variations from October 1990 to February 1992; and (3) the relative importance of the remotely forced sea level responses generated by central and western Pacific wind anomalies. The simulations use the Naval Research Laboratory global multilayer formulation; the suite of experiments includes hydrodynamic simulations that use both one- and three- active-layer reduced gravity models as well as an experiment that also includes thermodynamic effects. The models are executed from January 1, 1990, to March 1, 1992, a period that includes 10 significant westerly wind bursts or burst clusters and the 1991-1992 El Ni (n) over tilde event. The numerical experiments reveal an ability to accurately simulate the eastern Pacific sea level variations during this period. In response to a single burst the three-layer hydrodynamic simulation reveals that the second internal mode Kelvin wave yields a sea level change at the eastern boundary that is approximately one third that of the first mode and a surface velocity signature that is equivalent to the first mode. During the onset of the El Ni (n) over tilde o event the inclusion of higher modes also produces a more realistic representation of the observed eastern boundary sea level signal. Furthermore, by comparing the model response to particular wind bursts with the observed sea level at Baltra, Galapagos, a value of 2.5-2.6 m/s is suggested as the most appropriate mean speed for the first internal mode Kelvin wave during the onset phase. The models reveal the following scenario for the onset of the 1991-1992 El Ni (n) over tilde o. The eastern boundary sea level exhibited three, distinct pulselike events superimposed on a general rise; the observed sea level pulses occurred in October-November, December-January, and February. The numerical simulations indicate that the pulses in December-January and February were the result of three powerful, westerly wind bursts in the western Pacific preceded by westerly anomalies in the central Pacific. The Kelvin wave pulse generated in the western Pacific by the wind burst in late December to early January was reinforced by a strong central Pacific westerly wind anomaly in mid-January. These westerly wind events were associated with the development of western Pacific tropical cyclones near the equator in one or both hemispheres. C1 USN,RES LAB,MONTEREY,CA 93943. RP KINDLE, JC (reprint author), USN,RES LAB,CODE 7331,BAY ST LOUIS,MS 39529, USA. NR 39 TC 50 Z9 52 U1 0 U2 4 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 MAR 15 PY 1995 VL 100 IS C3 BP 4893 EP 4920 DI 10.1029/94JC02392 PG 28 WC Oceanography SC Oceanography GA QN009 UT WOS:A1995QN00900047 ER PT J AU HEBURN, GW JOHNSON, CD AF HEBURN, GW JOHNSON, CD TI SIMULATIONS OF THE MESOSCALE CIRCULATION OF THE GREENLAND-ICELAND-NORWEGIAN SEAS SO JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS LA English DT Article ID OCEAN CIRCULATION; MODEL AB The Greenland, Iceland, and Norwegian Seas provide the only link between the North Atlantic and the Arctic Oceans. This is a very dynamic region, rich in mesoscale variability. A two-layer, hydrodynamic version of the Navy layered ocean model is used to simulate the mesoscale frontal features and associated current systems. The model is wind-driven using monthly mean wind stresses and inflow/outflow mass flux from the Arctic and North Atlantic Oceans. The current transports from the model results compare favorably with transport measurements from a number of observational experiments. RP HEBURN, GW (reprint author), USN,RES LAB,CODE 7322,BAY ST LOUIS,MS 39529, USA. NR 38 TC 11 Z9 11 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 MAR 15 PY 1995 VL 100 IS C3 BP 4921 EP 4941 DI 10.1029/94JC02809 PG 21 WC Oceanography SC Oceanography GA QN009 UT WOS:A1995QN00900048 ER PT J AU ELGAR, S HERBERS, THC CHANDRAN, V GUZA, RT AF ELGAR, S HERBERS, THC CHANDRAN, V GUZA, RT TI HIGHER-ORDER SPECTRAL-ANALYSIS OF NONLINEAR OCEAN SURFACE GRAVITY-WAVES SO JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS LA English DT Article ID STATISTICS; BISPECTRA AB Bispectral and trispectral analyses are used to detect secondary and tertiary wave components resulting from nonlinear interactions among large-amplitude ocean surface gravity waves in 8- and 13-m water depths. Bispectra of bottom-pressure measurements indicate forced secondary waves at frequencies 2f(p) about twice the primary power spectral peak frequency f(p). However, the interpretation of the bispectrum at sum frequencies of approximately 3f(p) is ambiguous because contributions of both secondary and tertiary forced waves may be significant. Trispectral analysis confirms the presence of tertiary waves with frequency approximately 3f(p) In 8 m depth the tertiary bottom-pressure field is dominated by interactions between three colinearly propagating wind-wave components with frequencies close to f(p). In 13 m depth these relatively short-wavelength forced waves are strongly attenuated at the seafloor and the tertiary wave field is driven by interactions between the dominant waves at f(p) and obliquely propagating higher-frequency wind waves. The phases of the higher-order spectra are consistent with weakly nonlinear wave theory (Hasselmann, 1962). C1 UNIV QUEENSLAND,SCH ELECT & ELECTR SYST ENGN,GPO BOX 2434,BRISBANE,QLD 4001,AUSTRALIA. UNIV CALIF SAN DIEGO,CTR COASTAL STUDIES 0209,LA JOLLA,CA 92093. USN,POSTGRAD SCH,DEPT OCEANOG,MONTEREY,CA 93943. RP ELGAR, S (reprint author), WASHINGTON STATE UNIV,SCH ELECT ENGN & COMP SCI,PULLMAN,WA 99164, USA. RI Chandran, Vinod/I-9691-2012 OI Chandran, Vinod/0000-0003-3185-0852 NR 27 TC 17 Z9 18 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-OCEANS JI J. Geophys. Res.-Oceans PD MAR 15 PY 1995 VL 100 IS C3 BP 4977 EP 4983 DI 10.1029/94JC02900 PG 7 WC Oceanography SC Oceanography GA QN009 UT WOS:A1995QN00900051 ER PT J AU SPIEL, DE AF SPIEL, DE TI ON THE BIRTHS OF JET DROPS FROM BUBBLES BURSTING ON WATER SURFACES SO JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS LA English DT Article ID AIR BUBBLES; MODEL AB The parameters of the births of jet droplets originating from bubbles bursting on water surfaces are presented. Results are given for bubble sizes R(b) from 350- to 1500-mu m equivalent volume radius in both sea and fresh waters. The ejection speeds of the jet droplets generated by a collapsing bubble and the height above the surface, as well as the time, at which the top drop breaks off the ascending jet have been measured. The dependence of the average droplet speed s(e) on bubble size is shown to be an exponential for at least the top two drops. For the top drop this dependence is given by s(e) = 10.7 exp (-0.00127 R(b)) m s(-1) for R(b) in micrometers which is a fit to measurements between 350- and 1500-mu m radius. Extrapolated to small bubble size, this equation projects that the-maximum droplet speed of ejection will approach 10.7 m s(-1) as bubble size vanishes. Extrapolated to larger bubbles, on the other hand, this equation projects that a bubble with R(b) = 3000 mu m will emit a droplet with a speed of only 0.2 m s(-1). The time t that the top drop separates from the rising jet is given by t = 2.45 x 10(-5) R(b)(1.65), where R(b) is in micrometers and t is in milliseconds. RP SPIEL, DE (reprint author), USN,POSTGRAD SCH,DEPT PHYS,MONTEREY,CA 93943, USA. NR 11 TC 35 Z9 36 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-OCEANS JI J. Geophys. Res.-Oceans PD MAR 15 PY 1995 VL 100 IS C3 BP 4995 EP 5006 DI 10.1029/94JC03055 PG 12 WC Oceanography SC Oceanography GA QN009 UT WOS:A1995QN00900053 ER PT J AU WANG, RB CHAROENVIT, Y CORRADIN, G PORROZZI, R HUNTER, RL GLENN, G ALVING, CR CHURCH, P HOFFMAN, SL AF WANG, RB CHAROENVIT, Y CORRADIN, G PORROZZI, R HUNTER, RL GLENN, G ALVING, CR CHURCH, P HOFFMAN, SL TI INDUCTION OF PROTECTIVE POLYCLONAL ANTIBODIES BY IMMUNIZATION WITH A PLASMODIUM-YOELII CIRCUMSPOROZOITE PROTEIN MULTIPLE ANTIGEN PEPTIDE VACCINE SO JOURNAL OF IMMUNOLOGY LA English DT Article ID T-CELL EPITOPES; SYNTHETIC PEPTIDE; MALARIA VACCINE; MONOCLONAL-ANTIBODIES; MURINE MALARIA; REPEAT REGION; SURFACE-ANTIGEN; INVITRO ASSAY; FALCIPARUM; SPOROZOITE AB Monoclonal Abs against the repeat region of the circumsporozoite protein (CSP) completely protect mice against Plasmodium yoelii (Py), but synthetic peptide and recombinant protein vaccines designed to produce only Abs to the PyCSP repeat region have never been reported to consistently provide protection. This lack of protection in the rodent model system has predicted the poor protection achieved in humans after immunization with synthetic peptide and recombinant protein P. falciparum CSP vaccines and has raised serious questions regarding the capacity for vaccine-induced polyclonal Abs against the CSP to consistently protect humans. We now report immunization studies with a multiple Ag peptide vaccine designed to rely on ''universal'' T epitopes from tetanus toxin to produce T cell help for induction of protective Abs against the repeat region of the PyCSP. When delivered with a nonionic block co-polymer adjuvant, the vaccine protected 78 to 100% of three inbred strains of mice, and 100% of outbred mice against P. yoelii sporozoite challenge. Protection was associated with Ab titer, and passive transfer of purified IgG from immune mice protected naive recipients. Similar protection was achieved when the peptide was encapsulated in liposomes with lipid A and mixed with aluminum hydroxide. By demonstrating for the first time solid protection against P. yoelii by polyclonal Abs against the CSP, these data provide the rationale for assessment of a similarly constructed and formulated P. falciparum CSP multiple Ag peptide vaccine in humans. C1 USN,MED RES INST,MALARIA PROGRAM,BETHESDA,MD 20889. UNIV LAUSANNE,INST BIOCHEM,CH-1066 EPALINGES,SWITZERLAND. FIOCRUZ MS,DEPT ULTRASTRUCT & CELL BIOL,RIO JANEIRO,BRAZIL. EMORY UNIV,DEPT PATHOL,ATLANTA,GA 30322. WALTER REED ARMY INST RES,DEPT MEMBRANE BIOCHEM,WASHINGTON,DC 20307. NR 51 TC 72 Z9 76 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 MAR 15 PY 1995 VL 154 IS 6 BP 2784 EP 2793 PG 10 WC Immunology SC Immunology GA QL084 UT WOS:A1995QL08400025 PM 7876549 ER PT J AU TEPPER, G LOSEE, J AF TEPPER, G LOSEE, J TI HIGH-RESOLUTION ROOM-TEMPERATURE IONIZATION-CHAMBER XENON GAMMA-RADIATION DETECTOR SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article AB A unique thin walled dual-type gridded ionization chamber gamma radiation detector using ultra pure Xe gas as the detection medium is described. The detector was operated at room temperature and the energy spectra of Co-60, (CS)-C-137, Na-22 and Ba-133 were obtained. An energy resolution of (16 keV) 2.4% FWHM was determined for the 662 keV Cs-137 gamma peak which is substantially better than the resolution of conventional NaI(Tl) detectors. The effect of electric field strength, grid field ratio, gamma energy, and electronegative impurities on energy resolution are discussed. RP TEPPER, G (reprint author), USN,COMMAND CONTROL & OCEAN SURVEILLANCE CTR,DIV RES DEV TEST & EVALUAT,SAN DIEGO,CA, USA. NR 9 TC 27 Z9 27 U1 2 U2 5 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD MAR 15 PY 1995 VL 356 IS 2-3 BP 339 EP 346 DI 10.1016/0168-9002(94)01206-7 PG 8 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA QM883 UT WOS:A1995QM88300026 ER PT J AU ERWIN, SC KRISHNA, GV MELE, EJ AF ERWIN, SC KRISHNA, GV MELE, EJ TI 3-DIMENSIONAL ELECTRONIC INSTABILITIES IN POLYMERIZED SOLID AC(60) SO PHYSICAL REVIEW B LA English DT Note C1 UNIV PENN,DEPT PHYS,PHILADELPHIA,PA 19104. UNIV PENN,RES STRUCT MATTER LAB,PHILADELPHIA,PA 19104. RP ERWIN, SC (reprint author), USN,RES LAB,COMPLEX SYST THEORY BRANCH,WASHINGTON,DC 20375, USA. RI Erwin, Steven/B-1850-2009 NR 11 TC 77 Z9 77 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD MAR 15 PY 1995 VL 51 IS 11 BP 7345 EP 7348 DI 10.1103/PhysRevB.51.7345 PG 4 WC Physics, Condensed Matter SC Physics GA QP774 UT WOS:A1995QP77400077 ER PT J AU YATER, JE SHIH, A IDZERDA, YU AF YATER, JE SHIH, A IDZERDA, YU TI STRUCTURAL CHARACTERIZATION OF STEPPED GA/SI(112) SURFACES SO PHYSICAL REVIEW B LA English DT Note ID AUGER-ELECTRON DIFFRACTION; ABSORPTION FINE-STRUCTURE; RAY STANDING-WAVE; PHOTOELECTRON-DIFFRACTION; SCATTERING; SILICON; GROWTH; BEAM RP YATER, JE (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 24 TC 11 Z9 11 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD MAR 15 PY 1995 VL 51 IS 11 BP 7365 EP 7368 DI 10.1103/PhysRevB.51.7365 PG 4 WC Physics, Condensed Matter SC Physics GA QP774 UT WOS:A1995QP77400082 ER PT J AU CAMPBELL, PM SNOW, ES MCMARR, PJ AF CAMPBELL, PM SNOW, ES MCMARR, PJ TI FABRICATION OF NANOMETER-SCALE SIDE-GATED SILICON FIELD-EFFECT TRANSISTORS WITH AN ATOMIC-FORCE MICROSCOPE SO APPLIED PHYSICS LETTERS LA English DT Article ID SCANNING TUNNELING MICROSCOPE C1 SFA INC,LANDOVER,MD. RP CAMPBELL, PM (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 16 TC 173 Z9 174 U1 2 U2 9 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD MAR 13 PY 1995 VL 66 IS 11 BP 1388 EP 1390 DI 10.1063/1.113210 PG 3 WC Physics, Applied SC Physics GA QL577 UT WOS:A1995QL57700030 ER PT J AU CHUI, ST CULLEN, JR AF CHUI, ST CULLEN, JR TI SPIN TRANSMISSION IN METALLIC TRILAYERS SO PHYSICAL REVIEW LETTERS LA English DT Article C1 USN,CTR SURFACE WARFARE,WHITE OAK LAB,SILVER SPRING,MD 20903. RP CHUI, ST (reprint author), UNIV DELAWARE,BARTOL RES INST,NEWARK,DE 19716, USA. NR 9 TC 21 Z9 21 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 MAR 13 PY 1995 VL 74 IS 11 BP 2118 EP 2121 DI 10.1103/PhysRevLett.74.2118 PG 4 WC Physics, Multidisciplinary SC Physics GA QL584 UT WOS:A1995QL58400056 ER PT J AU VOELLER, DM CHANGCHIEN, LM MALEY, GF MALEY, F TAKECHI, T TURNER, RE MONTFORT, WR ALLEGRA, CJ CHU, E AF VOELLER, DM CHANGCHIEN, LM MALEY, GF MALEY, F TAKECHI, T TURNER, RE MONTFORT, WR ALLEGRA, CJ CHU, E TI CHARACTERIZATION OF A SPECIFIC INTERACTION BETWEEN ESCHERICHIA-COLI THYMIDYLATE SYNTHASE AND ESCHERICHIA-COLI THYMIDYLATE SYNTHASE MESSENGER-RNA SO NUCLEIC ACIDS RESEARCH LA English DT Article ID MESSENGER-RNA TRANSLATION; 3' UNTRANSLATED REGION; BINDING-SITE; NUCLEOTIDE-SEQUENCE; DNA-POLYMERASE; PROTEIN; IDENTIFICATION; FERRITIN; INVITRO; ENZYME AB Previous studies have shown that human TS mRNA translation is controlled by a negative autoregulatory mechanism. In this study, an RNA electrophoretic gel mobility shift assay confirmed a direct interaction between Escherichia coli (E.coli) TS protein and its own E.coli TS mRNA. Two cis-acting sequences in the E.coli TS mRNA protein-coding region were identified, with one site corresponding to nucleotides 207-460 and the second site corresponding to nucleotides 461-807. Each of these mRNA sequences bind TS with a relative affinity similar to that of the full-length E.coli TS mRNA sequence (IC50 = 1 nM). A third binding site was identified, corresponding to nucleotides 808-1015, although its relative affinity for TS (IC50 = 5.1 nM) was lower than that of the other two cis-acting elements. E.coli TS proteins with mutations in amino acids located within the nucleotide-binding region retained the ability to bind RNA while proteins with mutations at either the nucleotide active site cysteine (C146S) or at amino acids located within the folate-binding region were unable to bind TS mRNA. These studies suggest that the regions on E.coli TS defined by the folate-binding site and/or critical cysteine sulfhydryl groups may represent important RNA binding domains. Further evidence is presented which demonstrates that the direct interaction with TS results in in vitro repression of E.coli TS mRNA translation. C1 NCI, USN, MED ONCOL BRANCH, BETHESDA, MD 20889 USA. NEW YORK STATE DEPT HLTH, WADSWORTH CTR, ALBANY, NY 12201 USA. UNIV ARIZONA, DEPT BIOCHEM, TUCSON, AZ 85721 USA. FU NCI NIH HHS [CA44355] NR 45 TC 23 Z9 24 U1 0 U2 1 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0305-1048 EI 1362-4962 J9 NUCLEIC ACIDS RES JI Nucleic Acids Res. PD MAR 11 PY 1995 VL 23 IS 5 BP 869 EP 875 DI 10.1093/nar/23.5.869 PG 7 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA QQ184 UT WOS:A1995QQ18400023 PM 7708505 ER PT J AU LEE, JN AF LEE, JN TI OPTICAL CORRELATION OF DATABASES IN CONVENTIONALLY ENCODED OPTICAL DISKS - TECHNIQUES FOR IMPROVED ACCURACY SO APPLIED OPTICS LA English DT Note DE DATABASE CORRELATION; OPTICAL DISKS; PULSE COUNTING AB Optical correlation of multiple tracks of conventional optical-disk data, digitally encoded by transitions in reflectance rather than absolute reflectance, can be improved with a pulse-counting version of the digital-multiplication-by-analog-convolution algorithm, which also avoids analog weighting. RP LEE, JN (reprint author), USN,RES LAB,DIV OPT SCI,WASHINGTON,DC 20375, USA. NR 9 TC 0 Z9 0 U1 0 U2 0 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD MAR 10 PY 1995 VL 34 IS 8 BP 1416 EP 1419 PG 4 WC Optics SC Optics GA QK906 UT WOS:A1995QK90600018 PM 21037677 ER PT J AU KEEFE, RG AXLEY, MJ HARABIN, AL AF KEEFE, RG AXLEY, MJ HARABIN, AL TI KINETIC MECHANISM STUDIES OF THE SOLUBLE HYDROGENASE FROM ALCALIGENES-EUTROPHUS H16 SO ARCHIVES OF BIOCHEMISTRY AND BIOPHYSICS LA English DT Article DE HYDROGENASE; KINETICS; ENZYME ACTIVATION; PING PONG BIREACTANT ID ALCALIGENES-EUTROPHUS-H16; DEHYDROGENASE; PURIFICATION AB Purified soluble hydrogenase (H-2:NAD(+) oxidoreductase, EC 1.12.1.2) from Alcaligenes eutrophus was activated to high specific activities by flushing the enzyme consecutively with N-2 and H-2 and then adding substoichiometric quantities of NADH. H-2-dependent NAD(+) reduction activities greater than or equal to 110 mu mol NADH formed/min/mg protein at pH 8.0 and 30 degrees C were obtained which were stable for several hours at 40 degrees C. Kinetic studies were conducted anaerobically using activated enzyme for the purpose of evaluating the potential of using hydrogenase to enhance decompression of mammals breathing H-2/O-2 mixtures under hyperbaric conditions (i.e., at ambient pressures greater than 1 atm). Using nonlinear curve fitting of the kinetic data, it was found that H-2 and NAD(+) bind hydrogenase via a ping pong bi bi mechanism with K-m values (+/-SE) of 11 +/- 0.9 and 138 +/- 11 mu M, respectively, at 30 degrees C and pH 8.0. Sodium ions were found to reversibly inhibit hydrogenase via a dead-end type of inhibition in which two catalytic forms of the enzyme bind Na+ with dissociation constants calculated to be 8.3 +/- 1.2 and 49.8 +/- 11.5 mM. In the absence of NaCl, maximum NAD(+) reduction activity was measured at pH 8.3 at 30 and 37 degrees C. In the presence of 50 mM NaCl, inhibition was observed primarily at alkaline pH, and at assay pH values less than or equal to 7.0, little or no difference was observed in activity in the presence or absence of 50 mM NaCl at a given temperature. Least squares analyses of the kinetic data indicated that substrate inhibition by H-2 occurs at high substrate concentrations (K-i = 1.46 +/- 0.64 mM), which would become a significant influence on enzyme catalytic activity at hyperbaric levels of Hz. (C) 1995 Academic Press, Inc. C1 USN,MED RES INST,BETHESDA,MD 20889. NR 14 TC 22 Z9 22 U1 1 U2 1 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 SN 0003-9861 J9 ARCH BIOCHEM BIOPHYS JI Arch. Biochem. Biophys. PD MAR 10 PY 1995 VL 317 IS 2 BP 449 EP 456 DI 10.1006/abbi.1995.1187 PG 8 WC Biochemistry & Molecular Biology; Biophysics SC Biochemistry & Molecular Biology; Biophysics GA QN338 UT WOS:A1995QN33800019 PM 7893162 ER PT J AU GRABELSKY, DA MATZ, SM PURCELL, WR ULMER, MP GROVE, JE JOHNSON, WN KINZER, RL KURFESS, JD STRICKMAN, MS JUNG, GV AF GRABELSKY, DA MATZ, SM PURCELL, WR ULMER, MP GROVE, JE JOHNSON, WN KINZER, RL KURFESS, JD STRICKMAN, MS JUNG, GV TI OSSE OBSERVATIONS OF GX-339-4 SO ASTROPHYSICAL JOURNAL LA English DT Article DE GAMMA RAYS, OBSERVATIONS; STARS, INDIVIDUAL (GX 339 -4); X-RAYS, BINARIES ID BLACK-HOLE CANDIDATES; CYGNUS X-1; X-RAYS; SPECTRUM; STATE AB The Oriented Scintillation Spectrometer Experiment (OSSE) on the Compton Gamma Ray Observatory observed the Galactic black hole candidate GX 339-4 as a target of opportunity in 1991 September, in response to the outburst reported by BATSE. We report here on energy spectra in the 50 keV-10 MeV range obtained by OSSE. The source was detected from 50 to 400 keV at a level relative to the Crab Nebula of similar to 30%. The observed spectrum was described reasonably well by a power law with an exponential cutoff; a least-squares fit yielded a photon index of 0.88 +/- 0.05 and a cutoff energy of 68 +/- 2 keV. The addition of a Compton reflection component did not significantly improve the overall fit. An optically thin thermal bremsstrahlung spectrum also provides a good fit, and the thermal Comptonization model of Sunyaev & Titarchuk, while deficient in describing the data above similar to 200 keV, cannot formally be ruled out. A pure power law with reflection does not fit the observed spectrum. During a follow-up observation made in 1991 November, the intensity of the source below 100 keV had dropped by more than a factor of 40, and it was no longer detected above similar to 100 keV. The energy spectrum during the November observation could be characterized by a power law with a photon index of 2.3 +/- 0.3; the spectrum was fitted equally well with the same exponentially cutoff power-law model applied to the September observation, reduced in intensity by a factor of similar to 40. During the 1991 September observation, the luminosity in the 50-400 keV band was approximately 2 x 10(37) ergs s(-1) (assuming a distance of 4 kpc), no more than a factor of 5 below the soft X-ray luminosity of GX 339-4 observed in its X-ray high state. The luminosity during the 1991 November observation was similar to 5 x 10(35) ergs s(-1). Extrapolations of both the exponentially cutoff power-law and Sunyaev-Titarchuk models to the similar to 5-20 keV X-ray band yield flux levels very close to that observed by Ginga during an overlapping interval in 1991 September, when GX 339-4 was reported to be in its low X-ray state. This may be one of the strongest indications to date of a direct correspondence between the low X-ray state and gamma-ray outbursts of GX 339-4. C1 USN,RES LAB,EO HULBURT CTR SPACE RES,WASHINGTON,DC 20375. UNIV SPACE RES ASSOC,WASHINGTON,DC 20024. RP GRABELSKY, DA (reprint author), NORTHWESTERN UNIV,DEPT PHYS & ASTRON,EVANSTON,IL 60208, USA. RI Johnson, Neil/G-3309-2014 NR 24 TC 20 Z9 20 U1 0 U2 0 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD MAR 10 PY 1995 VL 441 IS 2 BP 800 EP 805 DI 10.1086/175403 PN 1 PG 6 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QK140 UT WOS:A1995QK14000034 ER PT J AU FEITH, SJ HARTSFIELD, JF KAEHR, JW POZOS, RS AF FEITH, SJ HARTSFIELD, JF KAEHR, JW POZOS, RS TI INCIDENCE OF NECK BACK PAIN IN AIRCREWS OF F-14 AND F/A-18 AIRCRAFT SO FASEB JOURNAL LA English DT Meeting Abstract C1 USN,HLTH SCI CTR,SAN DIEGO,CA 92186. NR 0 TC 0 Z9 0 U1 0 U2 0 PU FEDERATION AMER SOC EXP BIOL PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3998 SN 0892-6638 J9 FASEB J JI Faseb J. PD MAR 10 PY 1995 VL 9 IS 4 BP A873 EP A873 PN 2 PG 1 WC Biochemistry & Molecular Biology; Biology; Cell Biology SC Biochemistry & Molecular Biology; Life Sciences & Biomedicine - Other Topics; Cell Biology GA QM406 UT WOS:A1995QM40601446 ER PT J AU KING, C JIA, X JUNE, CH ABE, R LEE, KP AF KING, C JIA, X JUNE, CH ABE, R LEE, KP TI CD28 DEFICIENT MICE GENERATE AN IMPAIRED TH2 RESPONSE TO SCHISTOSOMA-MANSONI INFECTION SO FASEB JOURNAL LA English DT Meeting Abstract C1 CASE WESTERN RESERVE UNIV,CLEVELAND,OH 44106. USN,MED RES INST,BETHESDA,MD 20814. NR 0 TC 0 Z9 0 U1 0 U2 0 PU FEDERATION AMER SOC EXP BIOL PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3998 SN 0892-6638 J9 FASEB J JI Faseb J. PD MAR 10 PY 1995 VL 9 IS 4 BP A775 EP A775 PN 2 PG 1 WC Biochemistry & Molecular Biology; Biology; Cell Biology SC Biochemistry & Molecular Biology; Life Sciences & Biomedicine - Other Topics; Cell Biology GA QM406 UT WOS:A1995QM40600870 ER PT J AU MEYER, LG SAXTON, JL LOTZ, WG AF MEYER, LG SAXTON, JL LOTZ, WG TI CHANGES IN FLUID BALANCE HORMONES IN RHESUS-MONKEYS DURING COLD-AIR EXPOSURE SO FASEB JOURNAL LA English DT Meeting Abstract C1 NIOSH,CINCINNATI,OH 45226. USN,AER MED RES LAB,PENSACOLA,FL 32508. NR 0 TC 0 Z9 0 U1 0 U2 0 PU FEDERATION AMER SOC EXP BIOL PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3998 SN 0892-6638 J9 FASEB J JI Faseb J. PD MAR 10 PY 1995 VL 9 IS 4 BP A646 EP A646 PN 2 PG 1 WC Biochemistry & Molecular Biology; Biology; Cell Biology SC Biochemistry & Molecular Biology; Life Sciences & Biomedicine - Other Topics; Cell Biology GA QM406 UT WOS:A1995QM40600128 ER PT J AU PERRIN, PJ RACKE, MK DAVIS, TA JUNE, CH SCOTT, DE AF PERRIN, PJ RACKE, MK DAVIS, TA JUNE, CH SCOTT, DE TI DIFFERENTIAL ROLES OF THE CTLA-4 LIGANDS CD80(B7-1) AND CD86(B7-2) IN THE INDUCTION OF EXPERIMENTAL ALLERGIC ENCEPHALOMYELITIS SO FASEB JOURNAL LA English DT Meeting Abstract C1 WASHINGTON UNIV,ST LOUIS,MO. USN,MED RES INST,BETHESDA,MD. US FDA,BETHESDA,MD 20014. NR 0 TC 0 Z9 0 U1 0 U2 0 PU FEDERATION AMER SOC EXP BIOL PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3998 SN 0892-6638 J9 FASEB J JI Faseb J. PD MAR 10 PY 1995 VL 9 IS 4 BP A788 EP A788 PN 2 PG 1 WC Biochemistry & Molecular Biology; Biology; Cell Biology SC Biochemistry & Molecular Biology; Life Sciences & Biomedicine - Other Topics; Cell Biology GA QM406 UT WOS:A1995QM40600943 ER PT J AU RENZI, PM LEE, CH AF RENZI, PM LEE, CH TI LIPOTEICHOIC ACIDS (LTAS) STIMULATE CELL-ADHESION MOLECULE (CAM) EXPRESSION BY CULTURED HUMAN UMBILICAL VEIN ENDOTHELIAL-CELLS (HUVEC) SO FASEB JOURNAL LA English DT Meeting Abstract C1 USN,MED RES INST,BETHESDA,MD 20889. NR 0 TC 0 Z9 0 U1 0 U2 0 PU FEDERATION AMER SOC EXP BIOL PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3998 SN 0892-6638 J9 FASEB J JI Faseb J. PD MAR 10 PY 1995 VL 9 IS 4 BP A886 EP A886 PN 2 PG 1 WC Biochemistry & Molecular Biology; Biology; Cell Biology SC Biochemistry & Molecular Biology; Life Sciences & Biomedicine - Other Topics; Cell Biology GA QM406 UT WOS:A1995QM40601524 ER PT J AU ROBERTS, DE READING, JE FEITH, SJ POZOS, RS AF ROBERTS, DE READING, JE FEITH, SJ POZOS, RS TI THE EFFECT OF HYDRATION ON FINGER TEMPERATURE DURING COLD WEATHER TRAINING SO FASEB JOURNAL LA English DT Meeting Abstract C1 USN,HLTH RES CTR,SAN DIEGO,CA 92186. NR 0 TC 0 Z9 0 U1 0 U2 0 PU FEDERATION AMER SOC EXP BIOL PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3998 SN 0892-6638 J9 FASEB J JI Faseb J. PD MAR 10 PY 1995 VL 9 IS 4 BP A646 EP A646 PN 2 PG 1 WC Biochemistry & Molecular Biology; Biology; Cell Biology SC Biochemistry & Molecular Biology; Life Sciences & Biomedicine - Other Topics; Cell Biology GA QM406 UT WOS:A1995QM40600126 ER PT J AU WITTMERS, L POZOS, R HOFFMAN, R INGERSOLL, B ISRAEL, D AF WITTMERS, L POZOS, R HOFFMAN, R INGERSOLL, B ISRAEL, D TI EVALUATION OF MICROCLIMATE COOLING (MCC) CONFIGURATIONS IN MEN WEARING CHEMICAL PROTECTION ENSEMBLES DURING HEAT AND EXERCISE STRESS SO FASEB JOURNAL LA English DT Meeting Abstract C1 UNIV MINNESOTA,DULUTH SCH MED,DEPT PHYSIOL,DULUTH,MN 55812. UNIV MINNESOTA,DULUTH SCH MED,DEPT BEHAV SCI,DULUTH,MN 55812. USN,HLTH RES CTR,SAN DIEGO,CA 92186. NR 0 TC 0 Z9 0 U1 0 U2 0 PU FEDERATION AMER SOC EXP BIOL PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3998 SN 0892-6638 J9 FASEB J JI Faseb J. PD MAR 10 PY 1995 VL 9 IS 4 BP A644 EP A644 PN 2 PG 1 WC Biochemistry & Molecular Biology; Biology; Cell Biology SC Biochemistry & Molecular Biology; Life Sciences & Biomedicine - Other Topics; Cell Biology GA QM406 UT WOS:A1995QM40600114 ER PT J AU ZHANG, JK MORRISON, TK FALK, MC LEE, CH AF ZHANG, JK MORRISON, TK FALK, MC LEE, CH TI BINDING OF SOLUBLE CD14 TO HUVEC SO FASEB JOURNAL LA English DT Meeting Abstract C1 USN,MED RES INST,SEPT SHOCK RES PROGRAM,BETHESDA,MD 20889. NR 0 TC 0 Z9 0 U1 0 U2 0 PU FEDERATION AMER SOC EXP BIOL PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3998 SN 0892-6638 J9 FASEB J JI Faseb J. PD MAR 10 PY 1995 VL 9 IS 4 BP A885 EP A885 PN 2 PG 1 WC Biochemistry & Molecular Biology; Biology; Cell Biology SC Biochemistry & Molecular Biology; Life Sciences & Biomedicine - Other Topics; Cell Biology GA QM406 UT WOS:A1995QM40601515 ER PT J AU THOMPSON, CB MINN, A PENA, J JUNE, C LINDSTEN, T NUNEZ, G GONZALEZGARCIA, M QUINTANS, J GOTTSCHALK, A BOISE, LH AF THOMPSON, CB MINN, A PENA, J JUNE, C LINDSTEN, T NUNEZ, G GONZALEZGARCIA, M QUINTANS, J GOTTSCHALK, A BOISE, LH TI COSTIMULATORY SIGNALS THAT PREVENT DEATH DURING T-CELL ACTIVATION SO JOURNAL OF CELLULAR BIOCHEMISTRY LA English DT Meeting Abstract C1 UNIFORMED SERV UNIV HLTH SCI,DEPT MED,BETHESDA,MD 20814. UNIV MICHIGAN,SCH MED,DEPT PATHOL,ANN ARBOR,MI 48109. USN,MED RES INST,IMMUNE CELL BIOL PROGRAM,BETHESDA,MD 20889. HOWARD HUGHES MED INST,DEPT MOLEC GENET & CELL BIOL,COCONUT GROVE,FL 33133. UNIV CHICAGO,DEPT MED,CHICAGO,IL 60637. UNIV CHICAGO,GWEN KNAPP CTR LUPUS & IMMUNOL RES,CHICAGO,IL 60637. UNIV CHICAGO,COMM IMMUNOL,CHICAGO,IL 60637. NR 0 TC 0 Z9 0 U1 0 U2 0 PU WILEY-LISS PI NEW YORK PA DIV JOHN WILEY & SONS INC 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0730-2312 J9 J CELL BIOCHEM JI J. Cell. Biochem. PD MAR 10 PY 1995 SU 21A BP 58 EP 58 PG 1 WC Biochemistry & Molecular Biology; Cell Biology SC Biochemistry & Molecular Biology; Cell Biology GA QT864 UT WOS:A1995QT86400186 ER PT J AU TAYLORFISHWICK, DA TWITTY, SA SIEGEL, JN AF TAYLORFISHWICK, DA TWITTY, SA SIEGEL, JN TI RAF-1, EITHER ALONE OR IN COMBINATION WITH CALCIUM IONOPHORE, ACTIVATES MULTIPLE PROMOTER ELEMENTS IMPORTANT IN T-CELL ACTIVATION SO JOURNAL OF CELLULAR BIOCHEMISTRY LA English DT Meeting Abstract C1 USN,RES INST,IMMUNE CELL BIOL PROGRAM,BETHESDA,MD 20814. NR 0 TC 0 Z9 0 U1 0 U2 0 PU WILEY-LISS PI NEW YORK PA DIV JOHN WILEY & SONS INC 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0730-2312 J9 J CELL BIOCHEM JI J. Cell. Biochem. PD MAR 10 PY 1995 SU 21A BP 85 EP 85 PG 1 WC Biochemistry & Molecular Biology; Cell Biology SC Biochemistry & Molecular Biology; Cell Biology GA QT864 UT WOS:A1995QT86400288 ER PT J AU JUNE, CH LEVINE, BL UEDA, Y CRAIGHEAD, N HUANG, ML AF JUNE, CH LEVINE, BL UEDA, Y CRAIGHEAD, N HUANG, ML TI ANTI-CD28 ANTIBODY AND LIGANDS CD80 AND CD86 INDUCE DISTINCT PATTERNS OF CYTOKINE SECRETION AND MAINTAIN LONG-TERM AUTOCRINE GROWTH OF CD4+ T-CELLS SO JOURNAL OF CELLULAR BIOCHEMISTRY LA English DT Meeting Abstract C1 USN,MED RES INST,IMMUNE CELL BIOL,BETHESDA,MD 20889. RI Levine, Bruce/D-1688-2009 NR 0 TC 0 Z9 0 U1 0 U2 0 PU WILEY-LISS PI NEW YORK PA DIV JOHN WILEY & SONS INC 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0730-2312 J9 J CELL BIOCHEM JI J. Cell. Biochem. PD MAR 10 PY 1995 SU 21A BP 121 EP 121 PG 1 WC Biochemistry & Molecular Biology; Cell Biology SC Biochemistry & Molecular Biology; Cell Biology GA QT864 UT WOS:A1995QT86400432 ER PT J AU KAYE, PM GORAK, P MURPHY, M PERRIN, PJ JUNE, CH AF KAYE, PM GORAK, P MURPHY, M PERRIN, PJ JUNE, CH TI ANTI-CD28 IMMUNOTHERAPY IN MURINE VISCERAL LEISHMANIASIS SO JOURNAL OF CELLULAR BIOCHEMISTRY LA English DT Meeting Abstract C1 UNIV LONDON LONDON SCH HYG & TROP MED,DEPT MED PARASITOL,LONDON WC1E 7HT,ENGLAND. USN,MED RES INST,IMMUNE CELL BIOL PROGRAM,BETHESDA,MD 20889. NR 0 TC 0 Z9 0 U1 0 U2 1 PU WILEY-LISS PI NEW YORK PA DIV JOHN WILEY & SONS INC 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0730-2312 J9 J CELL BIOCHEM JI J. Cell. Biochem. PD MAR 10 PY 1995 SU 21A BP 171 EP 171 PG 1 WC Biochemistry & Molecular Biology; Cell Biology SC Biochemistry & Molecular Biology; Cell Biology GA QT864 UT WOS:A1995QT86400628 ER PT J AU SNARSKI, SR LUEPTOW, RM AF SNARSKI, SR LUEPTOW, RM TI WALL-PRESSURE AND COHERENT STRUCTURES IN A TURBULENT BOUNDARY-LAYER ON A CYLINDER IN AXIAL-FLOW SO JOURNAL OF FLUID MECHANICS LA English DT Article ID CHANNEL FLOW; PIPE-FLOW; FLUCTUATIONS; RESOLUTION; FREQUENCY; SPECTRA; STRESS; THICK AB Measurements of wall pressure and streamwise velocity fluctuations in a turbulent boundary layer on a cylinder in an axial air flow (delta/a = 5.04, Re-theta = 2870) have been used to investigate the turbulent flow structures in the cylindrical boundary layer that contribute to the fluctuating pressure at the wall in an effort to deduce the effect of transverse curvature on the structure of boundary layer turbulence. Wall pressure was measured at a single location with a subminiature electret condenser microphone, and the velocity was measured throughout a large volume of the boundary layer with a hot-wire probe. Auto- and cross-spectral densities, cross-correlations, and conditional sampling of the pressure and streamwise velocity indicate that two primary groups of flow disturbances contribute to the fluctuating pressure at the wall: (i) low-frequency large-scale structures with dynamical significance across the entire boundary layer that are consistent with a pair of large-scale spanwise-oriented counter-rotating vortices and (ii) higher frequency small-scale disturbances concentrated close to the wall that are associated with the burst-sweep cycle and are responsible for the short-duration large-amplitude wall pressure fluctuations. A bidirectional relationship was found to exist between both positive and negative pressure peaks and the temporal derivative of u near the wall. Because the frequency of the large-scale disturbance observed across the boundary layer is consistent with the bursting frequency deduced from the average time between bursts, the burst-sweep cycle appears to be linked to the outer motion. A stretching of the large-scale structures very near the wall, as suggested by space-time correlation convection velocity results, may provide the coupling mechanism. Since the high-frequency disturbance observed near the wall is consistent with the characteristic frequency deduced from the average duration of bursting events, the bursting process provides the two characteristic time scales responsible for the bimodal distribution of energy near the wall. Because many of the observed structural features of the cylindrical boundary layer are similar to those observed in flat-plate turbulent boundary layers, transverse curvature appears to have little effect on the fundamental turbulent structure of the boundary layer for the moderate transverse curvature ratio used in this investigation. From differences that exist between the turbulence intensity, skewness, and spectra of the streamwise velocity, however, it appears that transverse curvature may enhance (i.e. energize) the large-scale motion owing to the reduced constraint imposed on the flow by the smaller cylindrical wall. C1 NORTHWESTERN UNIV,DEPT MECH ENGN,EVANSTON,IL 60208. RP SNARSKI, SR (reprint author), USN,UNDERSEA WARFARE CTR DETACHMENT,NEW LONDON,CT 06320, USA. RI Lueptow, Richard /B-6740-2009; Lueptow, Richard/J-4998-2012; OI Lueptow, Richard/0000-0002-1855-1471 NR 81 TC 38 Z9 38 U1 0 U2 8 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 MAR 10 PY 1995 VL 286 BP 137 EP 171 DI 10.1017/S0022112095000681 PG 35 WC Mechanics; Physics, Fluids & Plasmas SC Mechanics; Physics GA QM523 UT WOS:A1995QM52300007 ER PT J AU DRAKE, JJ LAMING, JM WIDING, KG SCHMITT, JHMM HAISCH, B BOWYER, S AF DRAKE, JJ LAMING, JM WIDING, KG SCHMITT, JHMM HAISCH, B BOWYER, S TI THE ELEMENTAL COMPOSITION OF THE CORONA OF PROCYON - EVIDENCE FOR THE ABSENCE OF THE FIP EFFECT SO SCIENCE LA English DT Article ID MAIN-SEQUENCE STARS; ABUNDANCES; SOLAR AB The chemical composition of the solar corona is not the same as that of the underlying photosphere. In the corona, elements with a first ionization potential (FIP) of less than or equal to 10 electron volts (for example, iron, magnesium, silicon, and calcium) are overabundant relative to those with an FIP of greater than or equal to 10 electron volts (for example, oxygen, neon, and sulfur) by factors of 3 to 10 with respect to the photosphere. The origin of this FIP effect is unknown. The launch of the Extreme Ultraviolet Explorer Satellite (EUVE) opened up the spectroscopic capability required to determine elemental abundances in the coronae of other stars. Spectroscopic observations of the corona of the nearby F5 IV star Procyon obtained with EUVE have yielded estimates of the relative abundances of high- and low-FIP species. The results provide evidence that Procyon, unlike the sun, does not exhibit the FIP effect. Whether the sun or Procyon is more typical of the general late-type stellar population is of fundamental interest to the physics of stellar outer atmospheres and has a bearing on the origin of cosmic rays. C1 USN,RES LAB,EO HULBURT CTR SPACE RES,WASHINGTON,DC 20375. SACHS FREEMAN ASSOCIATES INC,LANDOVER,MD 20785. MAX PLANCK INST EXTRATERR PHYS,D-85740 GARCHING,GERMANY. LOCKHEED SOLAR & ASTROPHYS LAB,DEPT 9130,PALO ALTO,CA 94304. RP DRAKE, JJ (reprint author), UNIV CALIF BERKELEY,CTR EXTREME ULTRAVIOLET ASTROPHYS,2150 KITTREDGE ST,BERKELEY,CA 94720, USA. NR 33 TC 21 Z9 21 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 MAR 10 PY 1995 VL 267 IS 5203 BP 1470 EP 1473 DI 10.1126/science.267.5203.1470 PG 4 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA QL497 UT WOS:A1995QL49700028 PM 17743544 ER PT J AU KAUFMAN, JW ASKEW, GK FARAHMAND, K AF KAUFMAN, JW ASKEW, GK FARAHMAND, K TI DIFFERENCES IN HUMAN BUCCAL AND LINGUAL HEAT-TRANSFER SO FASEB JOURNAL LA English DT Meeting Abstract C1 TEXAS A&I UNIV,KINGSVILLE,TX 78363. USN,CTR AIR WARFARE,WARMINSTER,PA 18974. NR 0 TC 0 Z9 0 U1 0 U2 0 PU FEDERATION AMER SOC EXP BIOL PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3998 SN 0892-6638 J9 FASEB J JI Faseb J. PD MAR 9 PY 1995 VL 9 IS 3 BP 151 EP 151 PN 1 PG 1 WC Biochemistry & Molecular Biology; Biology; Cell Biology SC Biochemistry & Molecular Biology; Life Sciences & Biomedicine - Other Topics; Cell Biology GA QL987 UT WOS:A1995QL98700905 ER PT J AU KAYAR, SR AUKHERT, Y COLTON, JS FOTHERGILL, DM AF KAYAR, SR AUKHERT, Y COLTON, JS FOTHERGILL, DM TI CARDIAC REPOLARIZATION AND INTRAPLEURAL PRESSURES IN HYPERBARIA SO FASEB JOURNAL LA English DT Meeting Abstract C1 USN,MED RES INST,BETHESDA,MD 20889. NR 0 TC 0 Z9 0 U1 0 U2 0 PU FEDERATION AMER SOC EXP BIOL PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3998 SN 0892-6638 J9 FASEB J JI Faseb J. PD MAR 9 PY 1995 VL 9 IS 3 BP A353 EP A353 PN 1 PG 1 WC Biochemistry & Molecular Biology; Biology; Cell Biology SC Biochemistry & Molecular Biology; Life Sciences & Biomedicine - Other Topics; Cell Biology GA QL987 UT WOS:A1995QL98702071 ER PT J AU MACDONALD, VW CHAVEZ, MD RUDOLPH, AS AF MACDONALD, VW CHAVEZ, MD RUDOLPH, AS TI LIPOSOME ENCAPSULATION DOES NOT IMPEDE INTERACTIONS OF HEMOGLOBIN WITH NITRIC-OXIDE SO FASEB JOURNAL LA English DT Meeting Abstract C1 WALTER REED ARMY MED CTR,WALTER REED ARMY INST RES,WASHINGTON,DC 20307. USN,RES LAB,CTR BIOMOLEC SCI & ENGN,WASHINGTON,DC 20375. NR 0 TC 0 Z9 0 U1 0 U2 1 PU FEDERATION AMER SOC EXP BIOL PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3998 SN 0892-6638 J9 FASEB J JI Faseb J. PD MAR 9 PY 1995 VL 9 IS 3 BP A27 EP A27 PN 1 PG 1 WC Biochemistry & Molecular Biology; Biology; Cell Biology SC Biochemistry & Molecular Biology; Life Sciences & Biomedicine - Other Topics; Cell Biology GA QL987 UT WOS:A1995QL98700153 ER PT J AU MALIK, MM DALESANDRO, MM REED, HL LOPEZ, A HARFORD, R HOMER, L AF MALIK, MM DALESANDRO, MM REED, HL LOPEZ, A HARFORD, R HOMER, L TI MONONUCLEAR LEUKOCYTE NUCLEAR THYROID-HORMONE RECEPTORS - EFFECTS OF PROLONGED ANTARCTIC RESIDENCE ON RECEPTOR KINETICS SO FASEB JOURNAL LA English DT Meeting Abstract C1 USN,MED RES INST,BETHESDA,MD 20889. NR 0 TC 0 Z9 0 U1 0 U2 0 PU FEDERATION AMER SOC EXP BIOL PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3998 SN 0892-6638 J9 FASEB J JI Faseb J. PD MAR 9 PY 1995 VL 9 IS 3 BP A362 EP A362 PN 1 PG 1 WC Biochemistry & Molecular Biology; Biology; Cell Biology SC Biochemistry & Molecular Biology; Life Sciences & Biomedicine - Other Topics; Cell Biology GA QL987 UT WOS:A1995QL98702125 ER PT J AU QUESADA, MH AHLERS, ST FOREMAN, CL SAUSEN, KP AF QUESADA, MH AHLERS, ST FOREMAN, CL SAUSEN, KP TI THERMAL AND PHYSIOLOGICAL-RESPONSES TO CHRONIC ADMINISTRATION OF DPAT SO FASEB JOURNAL LA English DT Meeting Abstract C1 USN,MED RES INST,BETHESDA,MD 20889. NR 0 TC 0 Z9 0 U1 0 U2 0 PU FEDERATION AMER SOC EXP BIOL PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3998 SN 0892-6638 J9 FASEB J JI Faseb J. PD MAR 9 PY 1995 VL 9 IS 3 BP A357 EP A357 PN 1 PG 1 WC Biochemistry & Molecular Biology; Biology; Cell Biology SC Biochemistry & Molecular Biology; Life Sciences & Biomedicine - Other Topics; Cell Biology GA QL987 UT WOS:A1995QL98702096 ER PT J AU ZHU, X GAFNEY, WCM PACHECO, ND ROLLWAGEN, FM AF ZHU, X GAFNEY, WCM PACHECO, ND ROLLWAGEN, FM TI LIPOSOME-ENCAPSULATED HEMOGLOBIN (LEH) DIFFERENTIALLY INCREASES IL-6 GENE-EXPRESSION BY MACROPHAGES AND ENDOTHELIAL-CELLS IN-VITRO SO FASEB JOURNAL LA English DT Meeting Abstract C1 USN,MED RES INST,BETHESDA,MD 20889. NR 0 TC 0 Z9 0 U1 0 U2 1 PU FEDERATION AMER SOC EXP BIOL PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3998 SN 0892-6638 J9 FASEB J JI Faseb J. PD MAR 9 PY 1995 VL 9 IS 3 BP A245 EP A245 PN 1 PG 1 WC Biochemistry & Molecular Biology; Biology; Cell Biology SC Biochemistry & Molecular Biology; Life Sciences & Biomedicine - Other Topics; Cell Biology GA QL987 UT WOS:A1995QL98701450 ER PT J AU LEDBETTER, E SHALLOW, S HANSON, KR AF LEDBETTER, E SHALLOW, S HANSON, KR TI MALARIA IN SOMALIA - LESSONS IN PREVENTION SO JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION LA English DT Letter C1 SAN DIEGO STATE UNIV,SAN DIEGO,CA 92182. FIRST MARINE EXPEDITIONARY FORCE,CAMP PENDLETON,CA. RP LEDBETTER, E (reprint author), USN,ENVIRONM & PREVENT MED UNIT 5,SAN DIEGO,CA 92152, USA. NR 3 TC 4 Z9 4 U1 0 U2 0 PU AMER MEDICAL ASSOC PI CHICAGO PA 515 N STATE ST, CHICAGO, IL 60610 SN 0098-7484 J9 JAMA-J AM MED ASSOC JI JAMA-J. Am. Med. Assoc. PD MAR 8 PY 1995 VL 273 IS 10 BP 774 EP 775 DI 10.1001/jama.273.10.774 PG 2 WC Medicine, General & Internal SC General & Internal Medicine GA QJ750 UT WOS:A1995QJ75000018 PM 7861567 ER PT J AU WALLACE, MR AF WALLACE, MR TI MALARIA IN SOMALIA - LESSONS IN PREVENTION - REPLY SO JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION LA English DT Letter RP WALLACE, MR (reprint author), USN,MED CTR,SAN DIEGO,CA 92152, USA. NR 2 TC 0 Z9 0 U1 0 U2 0 PU AMER MEDICAL ASSOC PI CHICAGO PA 515 N STATE ST, CHICAGO, IL 60610 SN 0098-7484 J9 JAMA-J AM MED ASSOC JI JAMA-J. Am. Med. Assoc. PD MAR 8 PY 1995 VL 273 IS 10 BP 775 EP 775 PG 1 WC Medicine, General & Internal SC General & Internal Medicine GA QJ750 UT WOS:A1995QJ75000019 ER PT J AU ROBINSON, KM OGRADY, WE AF ROBINSON, KM OGRADY, WE TI X-RAY-DIFFRACTION AND ELECTROCHEMICAL STUDY ON THE OXIDATION OF FLAME-ANNEALED AU(100) SINGLE-CRYSTAL SURFACES SO JOURNAL OF ELECTROANALYTICAL CHEMISTRY LA English DT Article DE FLAME ANNEALING; SURFACE STRUCTURE; SINGLE-CRYSTAL ELECTROCHEMISTRY ID GOLD SURFACES; RECONSTRUCTION; CELL; AU(110)-(1X2); MICROSCOPY; STABILITY; ROUGHNESS AB A comparison of the surface structure and the cyclic voltammograms of a Au(100) single crystal surface after various non-UHV preparation techniques has been made. Comparisons were made between two flaming temperatures, above and below the annealing transition temperature, and two cooling methods (air and water quenching). A chemical cleaning method was also used as a standard for the flame results. None of the preparation techniques produced a (5 X 20) reconstruction as measured by surface X-ray diffraction. The high temperature annealing produced the smoothest surface; however, the bulk mosaics, as measured by the full width at half maximum of the (0, 0, 2) reflection, were increased. Upon immersion in 0.1 M HClO4 at +0.4 V/SCE asymmetry in the (0, 0, l) specular rod associated with the (5 X 20) reconstruction was observed. The increased mosaics associated with an increase in the surface defects resulted in the growth of the oxidation peak at +0.95 V/SCE in the cyclic voltammogram. C1 USN,RES LAB,DIV CHEM,WASHINGTON,DC 20375. NR 23 TC 3 Z9 3 U1 1 U2 4 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0022-0728 J9 J ELECTROANAL CHEM JI J. Electroanal. Chem. PD MAR 7 PY 1995 VL 384 IS 1-2 BP 139 EP 144 DI 10.1016/0022-0728(94)03707-A PG 6 WC Chemistry, Analytical; Electrochemistry SC Chemistry; Electrochemistry GA QM992 UT WOS:A1995QM99200018 ER PT J AU QIAN, W SKOWRONSKI, M DEGRAEF, M DOVERSPIKE, K ROWLAND, LB GASKILL, DK AF QIAN, W SKOWRONSKI, M DEGRAEF, M DOVERSPIKE, K ROWLAND, LB GASKILL, DK TI MICROSTRUCTURAL CHARACTERIZATION OF ALPHA-GAN FILMS GROWN ON SAPPHIRE BY ORGANOMETALLIC VAPOR-PHASE EPITAXY SO APPLIED PHYSICS LETTERS LA English DT Article ID MOLECULAR-BEAM EPITAXY; AIN BUFFER LAYER; GALLIUM NITRIDE; THIN-FILMS; MOVPE; SUBSTRATE; SILICON 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; DeGraef, Marc/G-5827-2010 OI Skowronski, Marek/0000-0002-2087-0068; DeGraef, Marc/0000-0002-4721-6226 NR 18 TC 247 Z9 254 U1 1 U2 15 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD MAR 6 PY 1995 VL 66 IS 10 BP 1252 EP 1254 DI 10.1063/1.113253 PG 3 WC Physics, Applied SC Physics GA QK344 UT WOS:A1995QK34400033 ER PT J AU MORGAN, CA SERPA, FG TAKACS, E MEYER, ES GILLASPY, JD SUGAR, J ROBERTS, JR BROWN, CM FELDMAN, U AF MORGAN, CA SERPA, FG TAKACS, E MEYER, ES GILLASPY, JD SUGAR, J ROBERTS, JR BROWN, CM FELDMAN, U TI OBSERVATION OF VISIBLE AND UV MAGNETIC DIPOLE TRANSITIONS IN HIGHLY-CHARGED XENON AND BARIUM SO PHYSICAL REVIEW LETTERS LA English DT Article ID FORBIDDEN LINES; TOKAMAK PLASMAS; CONFIGURATIONS; IRON; IONS C1 USN,RES LAB,EO HULBURT CTR SPACE RES,WASHINGTON,DC 20375. TEXAS A&M UNIV,COLLEGE STN,TX 77843. UNIV NOTRE DAME,NOTRE DAME,IN 46556. HUNGARIAN ACAD SCI,INST NUCL RES,H-4001 DEBRECEN,HUNGARY. RP MORGAN, CA (reprint author), NATL INST STAND & TECHNOL,DIV ATOM PHYS,GAITHERSBURG,MD 20899, USA. NR 24 TC 72 Z9 72 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 MAR 6 PY 1995 VL 74 IS 10 BP 1716 EP 1719 DI 10.1103/PhysRevLett.74.1716 PG 4 WC Physics, Multidisciplinary SC Physics GA QK075 UT WOS:A1995QK07500005 ER PT J AU PIERSON, SW BUAN, J ZHOU, B HUANG, CC VALLS, OT AF PIERSON, SW BUAN, J ZHOU, B HUANG, CC VALLS, OT TI 3D X-Y SCALING OF THE SPECIFIC-HEAT OF YBA2CU3O7-DELTA SINGLE-CRYSTALS - COMMENT SO PHYSICAL REVIEW LETTERS LA English DT Note ID HC2 LINE C1 UNIV MINNESOTA,DEPT PHYS,MINNEAPOLIS,MN 55455. RP PIERSON, SW (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 8 TC 20 Z9 20 U1 1 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 MAR 6 PY 1995 VL 74 IS 10 BP 1887 EP 1887 DI 10.1103/PhysRevLett.74.1887 PG 1 WC Physics, Multidisciplinary SC Physics GA QK075 UT WOS:A1995QK07500051 ER PT J AU RICE, JK RUSSELL, TP AF RICE, JK RUSSELL, TP TI HIGH-PRESSURE MATRIX-ISOLATION OF HETEROGENEOUS CONDENSED-PHASE CHEMICAL-REACTIONS UNDER EXTREME CONDITIONS SO CHEMICAL PHYSICS LETTERS LA English DT Article ID THERMAL-DECOMPOSITION; ENERGETIC MATERIALS; HEXANITROHEXAAZAISOWURTZITANE; CELL; RDX; HEXANITROHEXAZAISOWURTZITANE; THERMOLYSIS; NH4NO3 AB A new technique which combines high-pressure and thermal-shock conditions with low-temperature matrix isolation in a gem anvil cell is presented. This serves to partially quench or arrest the reaction sequence of an energetic material. New chemical species are observed which indicate that intermediates are trapped in addition to final products. This combination of high pressure and low temperature helps elucidate the complicated reaction pathways in the deflagration to detonation regime. We have applied this technique to hexanitrohexaazaisowurtzitane (HNIW, chemical name: 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazatetracyclo[5.5.0.0(5,9).0(3,11)]dodecane). Products are identified using infrared spectroscopy and comparisons are made to previously reported data taken under thermal, ambient pressure conditions. RP RICE, JK (reprint author), USN,RES LAB,DIV CHEM,CODE 6110,4555 OVERLOOK AVE SW,WASHINGTON,DC 20375, USA. NR 27 TC 7 Z9 7 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0009-2614 J9 CHEM PHYS LETT JI Chem. Phys. Lett. PD MAR 3 PY 1995 VL 234 IS 1-3 BP 195 EP 202 DI 10.1016/0009-2614(95)00044-5 PG 8 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA QJ742 UT WOS:A1995QJ74200033 ER PT J AU ROSENBERG, A PEEBLES, DL AF ROSENBERG, A PEEBLES, DL TI LUMINESCENCE OF C-60 ADSORBED ON AG AND IN SURFACES SO CHEMICAL PHYSICS LETTERS LA English DT Article ID ENHANCED RAMAN-SCATTERING; PHOTOPHYSICAL PROPERTIES; METAL-SURFACES; SOLID C-60; SILVER; FILMS; SPECTROSCOPY; STATES; C-70 AB The photoluminescence (PL) of 1-2 monolayers (ML) of C-60 adsorbed on cold-deposited Ag and In surfaces is strongly quenched by the metal-C-60 interaction. However, similar to the case of the Raman spectra of C-60 on the same surfaces, the PL intensity increases substantially upon annealing of the surfaces to 300 K. Changes in the PL spectrum indicate that the metal-C-60 interaction, which includes charge transfer from the surface to the adsorbed C-60, perturbs the first C-60 ML more strongly than the second. We attribute these effects to the introduction of nonradiative deexcitation channels involving electronic states near the metal's Fermi level. RP ROSENBERG, A (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 28 TC 5 Z9 5 U1 1 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0009-2614 J9 CHEM PHYS LETT JI Chem. Phys. Lett. PD MAR 3 PY 1995 VL 234 IS 1-3 BP 221 EP 226 DI 10.1016/0009-2614(95)00011-R PG 6 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA QJ742 UT WOS:A1995QJ74200037 ER PT J AU PRANGE, R ENGLE, IM CLARKE, JT DUNLOP, M BALLESTER, GE IP, WH MAURICE, S TRAUGER, J AF PRANGE, R ENGLE, IM CLARKE, JT DUNLOP, M BALLESTER, GE IP, WH MAURICE, S TRAUGER, J TI AURORAL SIGNATURE OF COMET SHOEMAKER-LEVY-9 IN THE JOVIAN MAGNETOSPHERE SO SCIENCE LA English DT Article AB The electrodynamic interaction of the dust and gas comae of comet Shoemaker-Levy 9 with the jovian magnetosphere was unique and different from the atmospheric effects. Early theoretical predictions of auroral-type processes on the comet magnetic field line and advanced modeling of the time-varying morphology of these lines allowed dedicated observations with the Hubble Space Telescope Wide Field Planetary Camera 2 and resulted in the detection of a bright auroral spot, In that respect, this observation of the surface signature of an externally triggered auroral process can be considered as a ''magnetospheric active experiment'' on Jupiter. C1 INST ASTROPHYS,PARIS,FRANCE. USN ACAD,DEPT PHYS,ANNAPOLIS,MD 21402. UNIV MICHIGAN,DEPT ATMOSPHER OCEAN & SPACE SCI,ANN ARBOR,MI 48109. UNIV LONDON IMPERIAL COLL SCI TECHNOL & MED,SPACE & ATMOSPHER PHYS GRP,LONDON SW7 2BZ,ENGLAND. MAX PLANCK INST AERON,D-37191 KATLENBURG DUHM,GERMANY. EUROPEAN SPACE AGCY,ESTEC,DEPT SPACE SCI,SO,2200 AG NOORDWIJK,NETHERLANDS. JET PROPULS LAB,PASADENA,CA 91109. RP PRANGE, R (reprint author), UNIV PARIS 11,CNRS,INST ASTROPHYS SPATIALE,F-91405 ORSAY,FRANCE. RI dunlop, malcolm/F-1347-2010; Clarke, John/C-8644-2013 NR 18 TC 14 Z9 14 U1 0 U2 2 PU AMER ASSOC ADVAN SCIENCE PI WASHINGTON PA 1333 H ST NW, WASHINGTON, DC 20005 SN 0036-8075 J9 SCIENCE JI Science PD MAR 3 PY 1995 VL 267 IS 5202 BP 1317 EP 1320 DI 10.1126/science.7871430 PG 4 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA QK068 UT WOS:A1995QK06800035 PM 7871430 ER PT J AU KNOOP, K TROTT, A AF KNOOP, K TROTT, A TI OPHTHALMOLOGIC PROCEDURES IN THE EMERGENCY DEPARTMENT .3. SLIT LAMP USE AND FOREIGN-BODIES SO ACADEMIC EMERGENCY MEDICINE LA English DT Article DE EYE INJURIES; OPHTHALMOLOGY; EMERGENCY MEDICINE; SLIT LAMP; OCULAR FOREIGN BODIES; EYE PATCH AB The emergency physician (EP) must be familiar with carrrying out ophthalmologic procedures for evaluation and treatment of a multitude of eye complaints. This article is the lost of three articles addressing ophthalmologic procedures of use by the EP. This article reviews the indications and the techniques for slit lamp examination of the eye and techniques of foreign body removal. Criteria for consultation also are addressed. C1 USN,MED CTR,DEPT EMERGENCY MED,PORTSMOUTH,VA. RP KNOOP, K (reprint author), UNIV CINCINNATI,DEPT EMERGENCY MED,231 BETHESDA AVE,CINCINNATI,OH 45267, USA. NR 10 TC 2 Z9 2 U1 0 U2 0 PU HANLEY & BELFUS INC PI PHILADELPHIA PA 210 S 13TH ST, PHILADELPHIA, PA 19107 SN 1069-6563 J9 ACAD EMERG MED JI Acad. Emerg. Med. PD MAR PY 1995 VL 2 IS 3 BP 224 EP 230 DI 10.1111/j.1553-2712.1995.tb03205.x PG 7 WC Emergency Medicine SC Emergency Medicine GA RA300 UT WOS:A1995RA30000014 PM 7497039 ER PT J AU HUBER, C SADOQI, M HUBER, T CHACKO, D AF HUBER, C SADOQI, M HUBER, T CHACKO, D TI MICROENGINEERED CONDUCTING COMPOSITES FROM NANOCHANNEL TEMPLATES SO ADVANCED MATERIALS LA English DT Article ID POROUS VYCOR GLASS; METAL; INDIUM AB Research News: Novel nanostructures of conducting materials (e.g. see Figure) generated by the template approach are becoming available through a variety of syntheses, processes, and hosts. Here, a class of electronic composites prepared by the injection of the conducting melt into nanochannel templates is described. The injection process, and the analysis and potential uses of the composite microstructures are discussed. C1 POLYTECH INST NEW YORK,DEPT PHYS,BROOKLYN,NY 11201. HOWARD UNIV,WASHINGTON,DC 20059. RP HUBER, C (reprint author), USN,CTR SURFACE WARFARE,DEPT RES & TECHNOL,SILVER SPRING,MD 20903, USA. NR 20 TC 19 Z9 19 U1 0 U2 2 PU VCH PUBLISHERS INC PI DEERFIELD BEACH PA 303 NW 12TH AVE, DEERFIELD BEACH, FL 33442-1788 SN 0935-9648 J9 ADV MATER JI Adv. Mater. PD MAR PY 1995 VL 7 IS 3 BP 316 EP 318 DI 10.1002/adma.19950070316 PG 3 WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter SC Chemistry; Science & Technology - Other Topics; Materials Science; Physics GA QQ960 UT WOS:A1995QQ96000016 ER PT J AU Aha, DW AF Aha, DW TI Case-Based Reasoning SO AI MAGAZINE LA English DT Editorial Material AB The 1994 Workshop on Case-Based Reasoning (CBR) focused on the evaluation of CBR theories, models, systems, and system components. The CBR community addressed the evaluation of theories and implemented systems, with the consensus that a balance between novel innovations and evaluations could maximize progress. RP Aha, DW (reprint author), USN,RES LAB,CTR APPL RES ARTIFICIAL INTELLIGENCE,WASHINGTON,DC 20375, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER ASSOC ARTIFICIAL INTELL PI MENLO PK PA 445 BURGESS DRIVE, MENLO PK, CA 94025-3496 SN 0738-4602 J9 AI MAG JI AI Mag. PD SPR PY 1995 VL 17 IS 1 BP 92 EP 92 PG 1 WC Computer Science, Artificial Intelligence SC Computer Science GA UB770 UT WOS:A1995UB77000012 ER PT J AU SMALL, RA YOSHIMOTO, B AF SMALL, RA YOSHIMOTO, B TI THE VLS TECH-ASSIST EXPERT-SYSTEM SO AI MAGAZINE LA English DT Article AB The vertical launch system (VLS) tech-assist expert system is being used by the in-service engineering agent as a force multiplier to maintain the readiness, with fewer resources, of a growing population of VLSS in the U.S. Navy fleet. This article describes the collaborative development of this knowledge-based system for diagnosis; its main features, including case-based and model-based reasoning; and the lessons we learned from the process. C1 USN,CTR SURFACE WARFARE,DIV SYST ENGN,VERT LAUNCHING SYST,TECH ASSISTANCE EXPERT SYST D,PORT HUENEME,CA. RP SMALL, RA (reprint author), VITRO CORP,ROCKVILLE,MD 20850, USA. NR 0 TC 3 Z9 3 U1 0 U2 0 PU AMER ASSOC ARTIFICIAL INTELL PI MENLO PK PA 445 BURGESS DRIVE, MENLO PK, CA 94025-3496 SN 0738-4602 J9 AI MAG JI AI Mag. PD SPR PY 1995 VL 16 IS 1 BP 41 EP 50 PG 10 WC Computer Science, Artificial Intelligence SC Computer Science GA QP019 UT WOS:A1995QP01900007 ER PT J AU HOYT, R AF HOYT, R TI SHORTCUT FOR QUANTIFYING PROTEINURIA ON URINALYSIS SO AMERICAN FAMILY PHYSICIAN LA English DT Letter RP HOYT, R (reprint author), USN HOSP,PENSACOLA,FL, USA. NR 0 TC 1 Z9 1 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 MAR PY 1995 VL 51 IS 4 BP 749 EP 750 PG 2 WC Primary Health Care; Medicine, General & Internal SC General & Internal Medicine GA QM003 UT WOS:A1995QM00300007 PM 7887350 ER PT J AU MCNAMARA, KJ AF MCNAMARA, KJ TI PATIENTS LEAVING THE ED WITHOUT BEING SEEN BY A PHYSICIAN - IS SAME-DAY FOLLOW-UP INDICATED SO AMERICAN JOURNAL OF EMERGENCY MEDICINE LA English DT Article DE LEFT WITHOUT BEING SEEN; WAITING TIMES; ACCESS TO MEDICAL CARE; EMERGENCY MEDICAL SERVICES AB A prospective study was performed to determine acuity level, waiting times, and reasons why patients who sought care in an emergency department (ED) left without being seen by a physician, and to evaluate whether timed telephone follow-up improved their health outcomes. A comparison and follow-up survey was conducted on all patients who registered for care in the ED at the Naval Medical Center, San Diego, GA, and left without being seen (n = 32) and a 20% systematic: sampling of patients who waited until they were seen (n = 170) during a one-week period in Spring, 1993. Baseline demographics and health statuses on reporting to the ED were gathered on all patients waiting to be seen that agreed to participate in the study (n = 533). Demographics for those seen versus those who left without being seen (LWBS) were similar (mean age 23.9 v 23.2, not significant [NS]; percent male 50.5% v 50.0%, NS). Seen versus LWBS had a similar proportion of patients triaged urgent (15% v 6%, NS), and nonurgent (85% v 69%, NS). Twenty-five percent of LWBS left before triage. Acuity levels were compared for patients seen versus LWBS for level I (1.5% v 3%, NS), level II (75% v 78%, NS), and level III (23.5% v 19%, NS). For the 25% that left before triage, level I was 9%, level II was 64%, and level III was 27%. Sixty-nine percent of patients who LWBS were seen for evaluation within 48 hours, 9% in an ED and 60% in a clinic. One patient was admitted with a diagnosis of possible lithium toxicity and remained hospitalized for 7 days. Fifty one percent of those seen received further care within one week, 3% in an ED and 48% in a clinic, with 80% being status cheeks rather than care because the patients said they felt worse. Mean waiting time of patients seen was 1.17 hours versus 1.78 hours for patients LWBS (significant at .05). The primary reason for a patient to LWBS was waiting time (69%). On followup, patients rated how they felt on a scale of 1 to 6, with 1 being mush worse, and 6 being 100% better. Seen versus LWBS ratings were 5.10, much better (seen) versus 4.28, somewhat better (LWBS), significant at .01. When asked if they felt better as a direct result of their care/phone call, seen versus LWBS ratings were 5.1, to a large degree (seen) versus 4.0, to some degree (LWBS), significant at .01. The one acuity level I patient who LWBS said that her phone follow-up directly improved her health outcome (5, to a large degree). It was concluded that ED patients who LWBS have similar acuity levels to those who remain to be seen. The primary reason they leave is waiting time. Waiting time is directly related to limited access to primary care facilities after hours. This ultimately leads to ED overcrowding and increases the number of patients who LWBS, which potentially leads to poor health outcomes. Gall-backs to patients who LWBS affects and, in certain cases, may improve health outcomes for this population. (Am J Emerg Med 1995;13:136-141. This is a US government work. There are no restrictions on its use.) RP MCNAMARA, KJ (reprint author), USN,MED CTR,DEPT CLIN INVEST,SAN DIEGO,CA 92134, USA. NR 0 TC 18 Z9 18 U1 1 U2 1 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 MAR PY 1995 VL 13 IS 2 BP 136 EP 141 DI 10.1016/0735-6757(95)90079-9 PG 6 WC Emergency Medicine SC Emergency Medicine GA QQ147 UT WOS:A1995QQ14700004 PM 7893294 ER PT J AU GIBSON, JS MUNTER, DW AF GIBSON, JS MUNTER, DW TI INTRAVENOUS BRETYLIUM OVERDOSE SO AMERICAN JOURNAL OF EMERGENCY MEDICINE LA English DT Note DE BRETYLIUM TOSYLATE; BRETYLIUM COMPOUNDS; BRAIN DEATH AB An 81.5-mg/kg intravenous overdose of bretylium tosylate was administered to a 74-year-old patient after resuscitation from inferior wall myocardial infarction and cardiac arrest, The patient exhibited prolonged neurological depression with eventual neurological recovery. This case demonstrates the central nervous system depression that can occur with bretylium overdose. The emergency physician should be aware of this effect and avoid ending lifesaving measures because of apparent brain death in patients with bretylium overdose. RP GIBSON, JS (reprint author), USN,MED CTR,DEPT EMERGENCY MED,PORTSMOUTH,VA 23708, USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0735-6757 J9 AM J EMERG MED JI Am. J. Emerg. Med. PD MAR PY 1995 VL 13 IS 2 BP 177 EP 179 DI 10.1016/0735-6757(95)90089-6 PG 3 WC Emergency Medicine SC Emergency Medicine GA QQ147 UT WOS:A1995QQ14700014 PM 7893304 ER PT J AU DAVIS, DS AF DAVIS, DS TI MULTIPLEXED IMAGING BY MEANS OF OPTICALLY GENERATED KRONECKER PRODUCTS .1. THE BASIC CONCEPT SO APPLIED OPTICS LA English DT Article ID AIRBORNE; WATER; COMET AB A technique for multiplexed imaging is described. By using mask combinations, this technique requires far fewer encoding masks to generate the same number of masking operations than do more traditional approaches. It is also theoretically capable of higher optical throughput efficiencies. The method is readily adaptable to new image geometries and to applications in multispectral imaging. RP DAVIS, DS (reprint author), USN,POSTGRAD SCH,DEPT PHYS,CODE PH-DV,MONTEREY,CA 93943, USA. NR 18 TC 5 Z9 5 U1 0 U2 2 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD MAR 1 PY 1995 VL 34 IS 7 BP 1170 EP 1176 PG 7 WC Optics SC Optics GA QK127 UT WOS:A1995QK12700004 PM 21037646 ER PT J AU QIAN, SJ BRITZEN, S WITZEL, A KRICHBAUM, TP WEGNER, R WALTMAN, E AF QIAN, SJ BRITZEN, S WITZEL, A KRICHBAUM, TP WEGNER, R WALTMAN, E TI FLUX-DENSITY VARIABILITY OF 1741-038 - REFRACTIVE SCINTILLATION AND INTRINSIC VARIATIONS SO ASTRONOMY & ASTROPHYSICS LA English DT Article DE QUASARS, Q 1741-038; RADIO CONTINUUM, GALAXIES; ISM, STRUCTURE; SCATTERING ID EXTRAGALACTIC RADIO-SOURCES; LOW-FREQUENCY VARIABILITY; INTERSTELLAR SCINTILLATION; PULSAR SCINTILLATION; SPECTRUM; FLICKER; MHZ AB The structure functions D(tau) Of the flux density variations at 2.7 GHz and 8.1 GHz in the compact radio source 1741-038 (z=1.054) are compared with those at 1.5, 4.9, 15 and 22 GHz given by Hjellming and Narayan (1986) for a similar observing period. It is shown that for time lags 5 less than or similar to tau less than or similar to 30 days the structure functions at 2.7 GHz and 1.5 GHz are very similar and can be approximately represented by a power law D(tau) alpha tau(p) With index p similar to 1.7-1.8. The structure functions at 8.1, 15 and 22 GHz differ from those at the lower frequencies. A two-component model involving the extended Galactic interstellar medium and a thin screen with enhanced scattering strength is proposed. Using the refractive interstellar scintillation theory, the theoretical structure functions for the six observing frequencies are calculated. It is shown that the observed structure functions at 1.5 and 2.7 GHz can be well fitted by the model. The theoretical structure functions for the three higher frequencies (8.1, 15 and 22 GHz) are found to be much smaller than the observed structure functions. Thus the high frequency variations can not be fitted within the presently discussed RISS models and are probably intrinsic to the source. C1 MAX PLANCK INST RADIOASTRON, D-53121 BONN, GERMANY. CHINESE ACAD SCI, BEIJING ASTRON OBSERV, BEIJING 10080, PEOPLES R CHINA. USN, RES LAB, WASHINGTON, DC 20375 USA. NR 28 TC 16 Z9 18 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 MAR PY 1995 VL 295 IS 1 BP 47 EP 53 PG 7 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QL104 UT WOS:A1995QL10400009 ER PT J AU JUNG, GV KURFESS, DJ JOHNSON, WN KINZER, RL GROVE, JE STRICKMAN, MS PURCELL, WR GRABELSKY, DA ULMER, MP AF JUNG, GV KURFESS, DJ JOHNSON, WN KINZER, RL GROVE, JE STRICKMAN, MS PURCELL, WR GRABELSKY, DA ULMER, MP TI OSSE OBSERVATIONS OF 1E-1740.7-2942 IN 1992 SEPTEMBER SO ASTRONOMY & ASTROPHYSICS LA English DT Letter DE GALAXY, CENTER OF; GAMMA-RAYS, OBSERVATIONS; STARS, INDIVIDUAL, 1E 1740.7-2942 ID GALACTIC-CENTER REGION; GAMMA-RAY SPECTRUM; ANNIHILATION LINE; VARIABILITY; RADIATION; EMISSION AB We present data, on the galactic X-ray source 1E 1740.7-2942 from the Oriented Scintillation Spectrometer Experiment (OSSE) on board NASA's Compton Gamma Ray Observatory. Episodes of increased low-energy gamma, radiation have been reported from this source, including 1-day events in 1990 October and 1992 September. These events, of intensity 7 x 10(-3) and 4 x 10(-3) photons cm(-2) s(-1), respectively, have been interpreted as broadened and redshifted positron annihilation radiation. OSSE conducted observations of the Galactic Center region during a al-day interval from 1992 September 17 thru 1992 October 8. This includes the time of increased 200-450 keV emission from 1E 1740.7-2942 reported by SIGMA. The OSSE observations do not confirm this event. For the specific outburst recorded by SIGMA, 1999 Sep. 19.42-20.58 (UT), OSSE data provide an upper limit (3 sigma) of 2.4 x 10(-3) photons cm(-2) s(-1). C1 USN, RES LAB, WASHINGTON, DC 20375 USA. NORTHWESTERN UNIV, DEPT PHYS & ASTRON, EVANSTON, IL 60208 USA. RP JUNG, GV (reprint author), UNIV SPACE RES ASSOC, 300 D ST SW, SUITE 801, WASHINGTON, DC 20024 USA. RI Johnson, Neil/G-3309-2014 NR 23 TC 24 Z9 24 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 MAR PY 1995 VL 295 IS 2 BP L23 EP L26 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QM277 UT WOS:A1995QM27700003 ER PT J AU BENNETT, BL HAGAN, RD BANTA, G WILLIAMS, F AF BENNETT, BL HAGAN, RD BANTA, G WILLIAMS, F TI PHYSIOLOGICAL-RESPONSES DURING SHIPBOARD FIREFIGHTING SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article ID FIRE FIGHTERS; HEAT STRAIN AB This study determined the level of heat strain experienced by U.S. Navy personnel while combating fires aboard a damage control research ship, Male volunteers (9 = 9), wearing the standard Navy firefighting ensemble, were recorded for core temperature (Tie), skin temperatures (weighted mean, Tmsk), and heart rate (HR) during three fire test days, During the tests, air temperatures in the compartment containing the fire to be extinguished averaged 470 +/- 170 degrees C, while air temperatures in the compartment from which the fire wets fought ranged from 40 to 125 degrees C, Dressing in the ensemble and execution of preliminary firefighting activities led to a gradual increase in Tie, Tmsk, and HR; while during active firefighting, Tre, Tmsk, and HR increased rapidly, For all tests, the rate of Tmsk rise (8.73 degrees C . h(-1)) exceeded the rate of Tre rise (2.95 degrees C . h(-1)), leading to convergence of these values, Average peak values for ail tests were: Tie, 39.2 +/- 1.0 degrees C; Tmsk, 39.5 +/- 0.9 degrees C; body heat storage (HS), 2.02 +/- 0.77 kcal . kg(-1); rate of HS during firefighting, 170 +/- 92 kcal . m(-2) . h(-1); HR, 186 +/- 13 bpm, Our findings quantify the limits of tolerance of heat strain encountered during shipboard firefighting. C1 USN,HLTH RES CTR,SAN DIEGO,CA 92152. GEOCENTERS INC,FT WASHINGTON,MD 20744. USN,RES LAB,DIV CHEM,WASHINGTON,DC 20375. NR 19 TC 6 Z9 6 U1 0 U2 1 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD MAR PY 1995 VL 66 IS 3 BP 225 EP 231 PG 7 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA QK391 UT WOS:A1995QK39100005 PM 7661831 ER PT J AU SINGH, A CHOW, GM CHANG, EL MARKOWITZ, MA AF SINGH, A CHOW, GM CHANG, EL MARKOWITZ, MA TI MAKING STABLE NANOSCALE SPHERES AND TUBULES SO CHEMTECH LA English DT Article ID MICROSTRUCTURES; BILAYERS RP SINGH, A (reprint author), USN,RES LAB,CTR BIOMOLEC SCI & ENGN,MOLEC INTERFACIAL INTERACT LAB,CODE 6930,WASHINGTON,DC 20375, USA. NR 30 TC 4 Z9 4 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0009-2703 J9 CHEMTECH JI Chemtech PD MAR PY 1995 VL 25 IS 3 BP 38 EP 43 PG 6 WC Chemistry, Applied SC Chemistry GA QQ117 UT WOS:A1995QQ11700010 ER PT J AU MEYER, GA SHOPE, TR WAECKER, MJ LANNINGHAM, FH AF MEYER, GA SHOPE, TR WAECKER, MJ LANNINGHAM, FH TI MORAXELLA (BRANHAMELLA) CATARRHALIS BACTEREMIA IN CHILDREN - A REPORT OF 2 PATIENTS AND REVIEW OF THE LITERATURE SO CLINICAL PEDIATRICS LA English DT Article ID ACUTE OTITIS-MEDIA; BACTERIAL TRACHEITIS; PNEUMONIA; CULTURES; SEPTICEMIA; SINUSITIS; DISEASE; SEPSIS; VIRUS; BLOOD AB We report two cases of Moraxella catarrhalis (M. catarrhalis) bacteremia in apparently healthy children. One patient had bilateral otitis media and the other had pharyngitis and sinusitis; both patients had uncomplicated clinical courses. A literature review revealed 22 reported cases of M. catarrhalis bacteremia in children, 14 (63%) of which occurred in patients who had no identified underlying condition. Eight (36%) cases were seen in children who were immunocompromised. Nine (40%) patients presented with either purpura, petechia, or a maculopapular rash. M. catarrhalis is well known as a respiratory pathogen, but it has not been recognized as a common cause of unsuspected bacteremia in children. C1 USN,MED CTR,DEPT PEDIAT,SAN DIEGO,CA 92134. RP MEYER, GA (reprint author), USN,MED CTR,DEPT CLIN INVEST,SAN DIEGO,CA 92134, USA. NR 37 TC 27 Z9 27 U1 1 U2 1 PU WESTMINSTER PUBL INC PI GLEN HEAD PA 708 GLEN COVE AVE, GLEN HEAD, NY 11545 SN 0009-9228 J9 CLIN PEDIATR JI Clin. Pediatr. PD MAR PY 1995 VL 34 IS 3 BP 146 EP 150 DI 10.1177/000992289503400305 PG 5 WC Pediatrics SC Pediatrics GA QM648 UT WOS:A1995QM64800005 PM 7774141 ER PT J AU DOUGLASS, CH LADOUCEUR, HD SHAMAMIAN, VA MCDONALD, JR AF DOUGLASS, CH LADOUCEUR, HD SHAMAMIAN, VA MCDONALD, JR TI COMBUSTION CHEMISTRY IN PREMIXED C2F4-O-2 FLAMES SO COMBUSTION AND FLAME LA English DT Article ID MOLECULAR-OXYGEN; DRIVEN OXIDATION; CARBON-DIOXIDE; GAS-PHASE; O-ATOMS; TETRAFLUOROETHYLENE; INTENSITIES; KINETICS; METHANE AB The flame speed and combustion product distribution in a premixed C2F4-O-2 flame at atmospheric pressure have been measured and are compared with computational predictions. The dependence of the flame speed on fuel/oxygen ratio compares well with previous measurements. In contrast to hydrocarbon flames, the flame speed does not correlate with the adiabatic flame temperature, i.e., the maximum flame speed does not occur at the composition corresponding to the maximum adiabatic flame temperature. COF2 is observed to be the predominant combustion product for all fuel concentrations. The relative amounts of products experimentally observed are not in accord with those predicted by thermodynamic calculations. The previously published chemical mechanism derived from shock tube data is not adequate to explain our experimental results. An improved chemical combustion mechanism is proposed and tested using modern chemical kinetic computational codes. Suggestions are made for experiments to validate and improve the proposed mechanism. C1 USN,RES LAB,DIV CHEM,WASHINGTON,DC 20375. NR 62 TC 8 Z9 8 U1 0 U2 1 PU ELSEVIER SCIENCE PUBL CO INC PI NEW YORK PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 SN 0010-2180 J9 COMBUST FLAME JI Combust. Flame PD MAR PY 1995 VL 100 IS 4 BP 529 EP 542 DI 10.1016/0010-2180(94)00145-I PG 14 WC Thermodynamics; Energy & Fuels; Engineering, Multidisciplinary; Engineering, Chemical; Engineering, Mechanical SC Thermodynamics; Energy & Fuels; Engineering GA QP526 UT WOS:A1995QP52600002 ER PT J AU WILLIAMS, BA FLEMING, JW AF WILLIAMS, BA FLEMING, JW TI COMPARISON OF SPECIES PROFILES BETWEEN O-2 AND NO2 OXIDIZERS IN PREMIXED METHANE FLAMES SO COMBUSTION AND FLAME LA English DT Article ID LASER-INDUCED FLUORESCENCE; LOW-PRESSURE FLAMES; + NO; CH3O; CN; TEMPERATURES; COMBUSTION; RADICALS; STATES; TORR AB The profiles of the species H, OH, CH, NH, CN, NCO, NO2, and CH3O are compared in a series of five premixed stoichiometric 15-torr CH4/O-2/NO2/N-2 flames with NO2 comprising between 0% and 40% of the oxidizer. Relative species concentrations were measured by laser-induced fluorescence (LIF) and these results are compared with calculations using measured temperature profiles. The reaction mechanism of Miller and Bowman incorrectly predicts the standoff from the burner in flames containing more than 20% NO2; addition of several reactions involving NO, and HONO produces excellent agreement with experiment for most species. The reaction CH3 + NO2 --> CH3O + NO is found to be particularly important in the reaction mechanism. LIF profiles of CH3O show this species to be present in far larger quantities in the NO2 supported flames than in the CH4/O-2 system. The nitrogen-containing intermediates CN, NCO, and NH are all overpredicted by a factor of two in the 40% NO2 flame relative to the 10% NO2 flame, This indicates an inaccuracy in either the reburn reactions or the fuel nitrogen chemistry when large amounts of NO are present. The kinetic modeling shows that in the 40% NO2 flame, the dominant pathway to N-2 formation is through N2O, which is produced primarily by the reaction of NCO with NO. Comparison of emission profiles of NO2* for the various flames indicates that the appearance of an orange-yellow luminous zone at the base of NO2 supported flames is caused by thermal excitation of NO2, not by a chemiluminescence mechanism. C1 USN,RES LAB,DIV CHEM,WASHINGTON,DC 20375. NR 49 TC 17 Z9 17 U1 0 U2 6 PU ELSEVIER SCIENCE PUBL CO INC PI NEW YORK PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 SN 0010-2180 J9 COMBUST FLAME JI Combust. Flame PD MAR PY 1995 VL 100 IS 4 BP 571 EP 590 DI 10.1016/0010-2180(94)00146-J PG 20 WC Thermodynamics; Energy & Fuels; Engineering, Multidisciplinary; Engineering, Chemical; Engineering, Mechanical SC Thermodynamics; Energy & Fuels; Engineering GA QP526 UT WOS:A1995QP52600006 ER PT J AU LEWIS, T AF LEWIS, T TI SLEEPER AT COMPCON SO COMPUTER LA English DT Editorial Material RP LEWIS, T (reprint author), NAVAL POSTGRADUATE SCH,CODE CS,MONTEREY,CA 93943, USA. NR 3 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 MAR PY 1995 VL 28 IS 3 BP 6 EP 7 DI 10.1109/2.471166 PG 2 WC Computer Science, Hardware & Architecture; Computer Science, Software Engineering SC Computer Science GA QL910 UT WOS:A1995QL91000001 ER PT J AU MCCAFFERTY, E AF MCCAFFERTY, E TI THE ELECTRODE-KINETICS OF PIT INITIATION ON ALUMINUM SO CORROSION SCIENCE LA English DT Article ID CHLORIDE-IONS; MECHANISM; CORROSION; PASSIVITY; ALLOYS AB An electrode kinetic model for pit initiation has been described in terms of the charge on the oxide surface and the pH of zero charge parameter. The model takes into account adsorption of chloride ions on the oxide surface, penetration of chloride ions through the oxide him via vacancy transport, and localized dissolution of aluminum at the metal/oxide interface in three consecutive single electron transfer steps. Mathematical expressions are derived which agree with the experimentally determined variation in pitting potential with chloride ion concentration al constant pH and with the variation in pitting potential with pH at constant chloride ion concentration. RP MCCAFFERTY, E (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 30 TC 100 Z9 102 U1 5 U2 25 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0010-938X J9 CORROS SCI JI Corrosion Sci. PD MAR PY 1995 VL 37 IS 3 BP 481 EP 492 DI 10.1016/0010-938X(94)00150-5 PG 12 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA QL699 UT WOS:A1995QL69900010 ER PT J AU RICHARDSON, MD BRIGGS, KB BOWLES, FA TIETJEN, JH AF RICHARDSON, MD BRIGGS, KB BOWLES, FA TIETJEN, JH TI A DEPAUPERATE BENTHIC ASSEMBLAGE FROM THE NUTRIENT-POOR SEDIMENTS OF THE PUERTO-RICO TRENCH SO DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS LA English DT Article ID DEEP-SEA; VENEZUELA BASIN; BIOLOGICAL-ACTIVITY; BOTTOM CURRENTS; CARIBBEAN SEA; PACIFIC; COMMUNITIES; MEIOBENTHOS; ABUNDANCE; ATLANTIC AB The Puerto Rico Trench contains a low-density-biomass assemblage of macrofauna and meiofauna. The depauperate character of this assemblage is primarily the result of the low percentage and refractory nature of organic matter in the sediments. Recent turbidite flows may have contributed to the paucity of fauna. Sediments from this portion of the Puerto Rico Trench are the result of pelagic sedimentation interspersed with thin laminae that probably originated as turbidity flows from the northern and eastern, or deep-sea, walls of the trench. These recently deposited pelagic clays are low in available organic matter. Bioturbation and other mechanical and geochemical processes have not compacted these sediments into a stable, habitable substrate. The ''oligotrophic'' assemblages found in the Puerto Rico Trench contrast with ''eutrophic'' hadal assemblages which inhabit coarser-grained, organic-rich sediments. These types of sediments usually originate as turbidity flows from the walls of island-are trenches proximal to shallow-water shelves and provide a substrate of higher shear strength and greater nutritive value. C1 CUNY CITY COLL, DEPT BIOL, NEW YORK, NY 10031 USA. RP USN, RES LAB, STENNIS SPACE CTR, DIV MARINE GEOSCI, BAY ST LOUIS, MS 39529 USA. NR 46 TC 16 Z9 16 U1 3 U2 7 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0967-0637 EI 1879-0119 J9 DEEP-SEA RES PT I JI Deep-Sea Res. Part I-Oceanogr. Res. Pap. PD MAR PY 1995 VL 42 IS 3 BP 351 EP 364 DI 10.1016/0967-0637(95)00007-S PG 14 WC Oceanography SC Oceanography GA RE720 UT WOS:A1995RE72000004 ER PT J AU KELLY, JR AF KELLY, JR TI PERSPECTIVES ON STRENGTH SO DENTAL MATERIALS LA English DT Article ID BRITTLE MATERIALS; DENTAL CERAMICS; FLEXURE TEST; ALUMINA; FRACTURE; FATIGUE AB Strength values are often relied upon as indicators of structural performance for brittle dental materials. Strength, however, is more of a ''conditional'' than an inherent material property, and strength data alone cannot be directly extrapolated to predict structural performance. Strength data are meaningful when placed into context via knowledge of material microstructure, processing history, testing methodology, testing environment and failure mechanism(s). Structural failure is determined by additional failure probability variables (in concert with strength) that describe stress distributions, flaw size distributions, and that can account for either single or multiple failure modes. Lifetime predictions require additional information about the time dependence of slow crack growth. Basic fracture mechanics principles and Weibull failure modeling will be reviewed for the perspective they provide in understanding strength and the data obtained using various laboratory tests. Examples will be given to demonstrate how failed specimens can provide crucial information to either validate or question the failure mechanisms invoked during laboratory testing. The role of interfacial stresses is discussed as applied to dental structures of current interest. Overall, it is emphasized that an understanding of actual clinical failure modes is absolutely necessary before results of in vitro strength testing can be considered to have clinical validity. C1 USN,SCH DENT,BETHESDA,MD 20814. RP KELLY, JR (reprint author), NIST,DENT & MED MAT GRP,BLDG 224-A143,GAITHERSBURG,MD 20899, USA. NR 68 TC 163 Z9 166 U1 1 U2 17 PU ACAD DENTAL MATERIALS PI DALLAS PA BAYLOR COLLEGE DENTISTRY, 3302 GASTON AVE, DALLAS, TX 75266-0677 SN 0109-5641 J9 DENT MATER JI Dent. Mater. PD MAR PY 1995 VL 11 IS 2 BP 103 EP 110 DI 10.1016/0109-5641(95)80043-3 PG 8 WC Dentistry, Oral Surgery & Medicine; Materials Science, Biomaterials SC Dentistry, Oral Surgery & Medicine; Materials Science GA RY521 UT WOS:A1995RY52100006 PM 8621029 ER PT J AU MCGOWAN, LM KISER, WR AF MCGOWAN, LM KISER, WR TI REGARDING THE ROLE OF GROWTH-HORMONE IN THE DEVELOPMENT OF DIABETIC-RETINOPATHY SO DIABETES CARE LA English DT Letter RP MCGOWAN, LM (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 AMER DIABETES ASSOC PI ALEXANDRIA PA 1660 DUKE ST, ALEXANDRIA, VA 22314 SN 0149-5992 J9 DIABETES CARE JI Diabetes Care PD MAR PY 1995 VL 18 IS 3 BP 422 EP 423 PG 2 WC Endocrinology & Metabolism SC Endocrinology & Metabolism GA QM296 UT WOS:A1995QM29600026 PM 7555494 ER PT J AU DEGIORGI, VG HARVEY, DP KIRBY, GC MATIC, P AF DEGIORGI, VG HARVEY, DP KIRBY, GC MATIC, P TI EXPERIMENTAL AND COMPUTATIONAL EVALUATION OF CRACK-GROWTH THROUGH A SPATIALLY NONUNIFORM MICROSTRUCTURE SO FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES LA English DT Article ID FINITE-ELEMENT; FRACTURE; TOUGHNESS; PREDICTION; STEEL; HAZ AB Crack growth through a spatially non-uniform microstructure of 1045 steel edge-notched and pre-cracked panel specimens was investigated experimentally and computationally. The microstructural gradient was produced by heat treatment and differential quenching. A fractographic examination was performed on the crack growth specimens to correlate fracture mode and local toughness. Tensile specimens, corresponding to different sites in the edge-notched panel, were used to characterize the constitutive response and fracture resistance of the as-treated material. The Rockwell B hardness was used to identify and map material constitutive responses to corresponding locations in a finite element model of the panel. A debonding algorithm was used in the finite element simulations to model stable crack growth using a local fracture criterion. RP DEGIORGI, VG (reprint author), USN,RES LAB,MAT & MECH BRANCH,WASHINGTON,DC 20375, USA. NR 15 TC 0 Z9 0 U1 0 U2 1 PU FATIGUE & FRACTURE ENGINEERINGMATERIALS STRUCTURES LIMITED PI SHEFFIELD PA C/O SIRIUS UNIV OF SHEFFIELD/FAC OF ENG MAPPIN STREET, SHEFFIELD, S YORKSHIRE, ENGLAND S1 3JD SN 8756-758X J9 FATIGUE FRACT ENG M JI Fatigue Fract. Eng. Mater. Struct. PD MAR PY 1995 VL 18 IS 3 BP 305 EP 317 DI 10.1111/j.1460-2695.1995.tb00877.x PG 13 WC Engineering, Mechanical; Materials Science, Multidisciplinary SC Engineering; Materials Science GA RB039 UT WOS:A1995RB03900002 ER PT J AU CARGILL, PJ CHEN, J SPICER, DS ZALESAK, ST AF CARGILL, PJ CHEN, J SPICER, DS ZALESAK, ST TI GEOMETRY OF INTERPLANETARY MAGNETIC CLOUDS SO GEOPHYSICAL RESEARCH LETTERS LA English DT Article ID MAGNETOSPHERE; TOPOLOGY; FIELDS; STORMS AB Two dimensional magnetohydrodynamic simulations are presented of the distortion of a magnetic flux rope that is being accelerated through ambient solar wind plasma. The flux rope magnetic field has an axial component parallel to the solar wind field and an azimuthal component, which lies in the simulation plane. As the flux rope moves through the solar wind plasma, vortices form on its trailing edge and couple strongly to its interior. If the flux rope azimuthal field is weak, it deforms into an elongated banana-like shape after a few Alfven transit times. A strong azimuthal field component tends to inhibit this distortion. If the flux rope is taken to model a magnetic cloud, it is suggested that the shape of the cloud at 1 AU is determined by its distortion in the inner solar wind. Distortion timescales beyond 1 AU are estimated as many days. It is estimated that effective drag coefficients somewhat greater than unity are appropriate for modelling flux rope propagation. C1 NASA,GODDARD SPACE FLIGHT CTR,CTR COMPUTAT SCI,GREENBELT,MD 20771. RP CARGILL, PJ (reprint author), USN,RES LAB,DIV PLASMA PHYS,BEAM PHYS BRANCH,CODE 6790,WASHINGTON,DC 20375, USA. NR 18 TC 28 Z9 28 U1 0 U2 1 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0094-8276 J9 GEOPHYS RES LETT JI Geophys. Res. Lett. PD MAR 1 PY 1995 VL 22 IS 5 BP 647 EP 650 DI 10.1029/95GL00013 PG 4 WC Geosciences, Multidisciplinary SC Geology GA QL415 UT WOS:A1995QL41500031 ER PT J AU LEAN, JL MARISKA, JT STRONG, KT HUDSON, HS ACTON, LW ROTTMAN, GJ WOODS, TN WILLSON, RC AF LEAN, JL MARISKA, JT STRONG, KT HUDSON, HS ACTON, LW ROTTMAN, GJ WOODS, TN WILLSON, RC TI CORRELATED BRIGHTNESS VARIATIONS IN SOLAR RADIATIVE OUTPUT FROM THE PHOTOSPHERE TO THE CORONA SO GEOPHYSICAL RESEARCH LETTERS LA English DT Article ID IRRADIANCE COMPARISON EXPERIMENT-1; LUMINOSITY; INSTRUMENT; MISSION; NETWORK; LINE; SUN AB Correlated brightness variations are shown to occur in time series of coronal soft X-rays exclusive of prominent active regions, chromospheric ultraviolet radiation, and the photospheric total solar irradiance corrected for sunspot effects. These temporal correlations suggest that upwardly extending magnetic fields may have a large scale impact on the solar atmosphere in addition to their demonstrable role of generating localized active regions. The correlations have implications for improving and extending solar spectrum variability models. C1 LOCKHEED PALO ALTO RES LABS,PALO ALTO,CA 94304. UNIV HAWAII,HONOLULU,HI 96822. MONTANA STATE UNIV,BOZEMAN,MT 59717. NATL CTR ATMOSPHER RES,HIGH ALTITUDE OBSERV,BOULDER,CO 80307. JET PROPULS LAB,PASADENA,CA. RP LEAN, JL (reprint author), USN,RES LAB,EO HULBURT CTR SPACE RES,CODE 7673L,WASHINGTON,DC 20375, USA. NR 29 TC 7 Z9 8 U1 0 U2 1 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0094-8276 J9 GEOPHYS RES LETT JI Geophys. Res. Lett. PD MAR 1 PY 1995 VL 22 IS 5 BP 655 EP 658 DI 10.1029/95GL00114 PG 4 WC Geosciences, Multidisciplinary SC Geology GA QL415 UT WOS:A1995QL41500033 ER PT J AU CULHAM, P AF CULHAM, P TI HIPPEIS - THE CAVALRY OF ANCIENT-GREECE - WORLEY,L SO HISTORIAN LA English DT Book Review RP CULHAM, P (reprint author), USN ACAD,ANNAPOLIS,MD 21402, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU PHI ALPHA THETA PI ALLENTOWN PA THE HISTORIAN 2333 LIBERTY STREET, ALLENTOWN, PA 18104 SN 0018-2370 J9 HISTORIAN JI Historian PD SPR PY 1995 VL 57 IS 3 BP 653 EP 655 PG 3 WC History SC History GA QX547 UT WOS:A1995QX54700077 ER PT J AU FEDERICO, PA AF FEDERICO, PA TI EXPERT AND NOVICE RECOGNITION OF SIMILAR SITUATIONS SO HUMAN FACTORS LA English DT Article ID PROBLEM-SOLVING STRATEGIES; DECISION-MAKING; ANALOGICAL TRANSFER; PHYSICS PROBLEMS; KNOWLEDGE; PERFORMANCE; PERCEPTION; JUDGMENT; REPRESENTATION; ACQUISITION AB Situation assessment is crucial for making schema-driven decisions in naturalistic settings. Recognizing that some situations are similar to a specific category of scenarios underscores the classification aspect. To test hypotheses regarding expert and novice differences in recognizing similar scenarios, 28 senior naval officers and 52 junior naval officers classified tactical situations, each of which appeared on a note card, labeled every created cluster to convey a category description, and signified their criteria for sorting scenarios. Principal-components and discriminant analyses, and associated statistics, established that when categorizing situations, experts and novices used surface features and deep structures as criteria for recognizing similarity; experts are significantly more context-dependent than are novices; experts and novices do not differ significantly in the number of schemata and scenarios per schema formed or in the access avenues ascribed for these schemata; experts do not process scenarios at significantly deeper levels of analysis than do novices; and experts do not assign significantly more importance to conceptual aspects or less importance to perceptual properties than do novices. RP FEDERICO, PA (reprint author), USN,CTR PERSONNEL RES & DEV,53335 RYNE RD,SAN DIEGO,CA 92152, USA. NR 76 TC 10 Z9 11 U1 1 U2 8 PU HUMAN FACTORS SOC PI SANTA MONICA PA BOX 1369, SANTA MONICA, CA 90406 SN 0018-7208 J9 HUM FACTORS JI Hum. Factors PD MAR PY 1995 VL 37 IS 1 BP 105 EP 122 DI 10.1518/001872095779049471 PG 18 WC Behavioral Sciences; Engineering, Industrial; Ergonomics; Psychology, Applied; Psychology SC Behavioral Sciences; Engineering; Psychology GA RL735 UT WOS:A1995RL73500007 ER PT J AU SALAS, E PRINCE, C BAKER, DP SHRESTHA, L AF SALAS, E PRINCE, C BAKER, DP SHRESTHA, L TI SITUATION AWARENESS IN TEAM PERFORMANCE - IMPLICATIONS FOR MEASUREMENT AND TRAINING SO HUMAN FACTORS LA English DT Article AB Situation awareness has long been recognized as an important variable in aviation performance. Research to date has focused on identifying characteristics of situation awareness for individuals, not on the behaviors and processes associated with team situation awareness. The purpose of this review is to delineate and identify characteristics of team situation awareness. In addition, implications are discussed and research questions are outlined that target the measurement and training of situation awareness in teams. C1 USN,CTR AIR WARFARE,DIV TRAINING SYST,DIV HUMAN FACTORS,ORLANDO,FL 32826. NR 56 TC 175 Z9 176 U1 2 U2 28 PU HUMAN FACTORS SOC PI SANTA MONICA PA BOX 1369, SANTA MONICA, CA 90406 SN 0018-7208 J9 HUM FACTORS JI Hum. Factors PD MAR PY 1995 VL 37 IS 1 BP 123 EP 136 DI 10.1518/001872095779049525 PG 14 WC Behavioral Sciences; Engineering, Industrial; Ergonomics; Psychology, Applied; Psychology SC Behavioral Sciences; Engineering; Psychology GA RL735 UT WOS:A1995RL73500008 ER PT J AU ZHENG, YF YUN, XP AF ZHENG, YF YUN, XP TI INTRODUCTION TO THE SPECIAL ISSUE ON MOBILE ROBOTS SO IEEE ROBOTICS & AUTOMATION MAGAZINE LA English DT Editorial Material C1 USN,POSTGRAD SCH,DEPT ELECT & COMP ENGN,WASHINGTON,DC. RP ZHENG, YF (reprint author), OHIO STATE UNIV,COLUMBUS,OH 43210, USA. NR 1 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 1070-9932 J9 IEEE ROBOT AUTOM MAG JI IEEE Robot. Autom. Mag. PD MAR PY 1995 VL 2 IS 1 BP 2 EP 5 PG 4 WC Automation & Control Systems; Robotics SC Automation & Control Systems; Robotics GA RB700 UT WOS:A1995RB70000001 ER PT J AU KOSIER, SL WEI, A SCHRIMPF, RD FLEETWOOD, DM DELAUS, MD COMBS, WE AF KOSIER, SL WEI, A SCHRIMPF, RD FLEETWOOD, DM DELAUS, MD COMBS, WE TI PHYSICALLY-BASED COMPARISON OF HOT-CARRIER-INDUCED AND IONIZING-RADIATION-INDUCED DEGRADATION IN BJTS SO IEEE TRANSACTIONS ON ELECTRON DEVICES LA English DT Article AB A physically based comparison between hot-carrier and ionizing radiation stress in BJT's is presented, Although both types of stress lead to qualitatively similar changes in the current gain of the device, the physical mechanisms responsible for the degradation are quite different, In the case of hot-carrier stress the damage is localized near the emitter-base junction, which causes the excess base current to have an ideality factor of two, For ionizing radiation stress, the damage occurs along all oxide-silicon interfaces, which causes the excess base current to have an ideality factor between one and two for low total doses of ionizing radiation, but an ideality factor of two for large total doses, The different physical mechanisms that apply for each type of stress imply that improvement in resistance to one type of stress does not necessarily imply improvement in resistance to the other type of stress, Based on the physical model, implications for correlating and comparing hot-carrier-induced and ionizing-radiation-induced damage are discussed. C1 UNIV ARIZONA,DEPT ELECT & COMP ENGN,TUCSON,AZ 85721. SANDIA NATL LABS,DEPT 1322,ALBUQUERQUE,NM 87185. ANALOG DEVICES INC,WILMINGTON,MA 01887. RLP RES,ALBUQUERQUE,NM 87122. USN,CTR SURFACE WARFARE,CRANE,IN 47522. RP KOSIER, SL (reprint author), VTC INC,BLOOMINGTON,MN 55425, USA. RI Schrimpf, Ronald/L-5549-2013 OI Schrimpf, Ronald/0000-0001-7419-2701 NR 22 TC 66 Z9 68 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 0018-9383 J9 IEEE T ELECTRON DEV JI IEEE Trans. Electron Devices PD MAR PY 1995 VL 42 IS 3 BP 436 EP 444 DI 10.1109/16.368041 PG 9 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA QK311 UT WOS:A1995QK31100009 ER PT J AU OLDFIELD, EC OLSON, PE BONE, WD BRADSHAW, DA MARTIN, CR AF OLDFIELD, EC OLSON, PE BONE, WD BRADSHAW, DA MARTIN, CR TI COCCIDIOIDOMYCOSIS PRESENTING AS NEOPLASIA - ANOTHER GREAT IMITATOR DISEASE SO INFECTIOUS DISEASES IN CLINICAL PRACTICE LA English DT Review ID INFECTION C1 USN, MED CTR, DEPT INTERNAL MED, DIV INFECT DIS, SAN DIEGO, CA 92134 USA. USN, MED CTR, DEPT INTERNAL MED, DIV PULM, SAN DIEGO, CA 92134 USA. RP OLDFIELD, EC (reprint author), USN, MED CTR, DEPT CLIN INVEST, SAN DIEGO, CA 92134 USA. NR 36 TC 6 Z9 6 U1 0 U2 0 PU LIPPINCOTT WILLIAMS & WILKINS PI PHILADELPHIA PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA SN 1056-9103 EI 1536-9943 J9 INFECT DIS CLIN PRAC JI Infect. Dis. Clin. Pract. PD MAR-APR PY 1995 VL 4 IS 2 BP 87 EP 92 DI 10.1097/00019048-199503000-00002 PG 6 WC Immunology; Infectious Diseases SC Immunology; Infectious Diseases GA QQ993 UT WOS:A1995QQ99300002 ER PT J AU BARDO, RD STANTON, CT JONES, WH AF BARDO, RD STANTON, CT JONES, WH TI PREDICTED STRUCTURES OF PRECURSORS B4N6H8, B4N8H8, AND B4N8H6, AND THE B24N36 ANALOG OF C-60 SO INORGANIC CHEMISTRY LA English DT Note ID METASTABLE POLYMERS; NITROGEN-OXIDES; BORON-NITRIDE; CLUSTERS; MNDO/AM1; CARBON C1 UNIV W FLORIDA,DEPT CHEM,PENSACOLA,FL 32514. RP BARDO, RD (reprint author), USN,CTR SURFACE WARFARE,DIV ENERGET MAT,SILVER SPRING,MD 20903, USA. NR 14 TC 5 Z9 5 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0020-1669 J9 INORG CHEM JI Inorg. Chem. PD MAR 1 PY 1995 VL 34 IS 5 BP 1271 EP 1272 DI 10.1021/ic00109a039 PG 2 WC Chemistry, Inorganic & Nuclear SC Chemistry GA QK314 UT WOS:A1995QK31400039 ER PT J AU BAUSCH, DO BROWN, GG RONEN, D AF BAUSCH, DO BROWN, GG RONEN, D TI CONSOLIDATING AND DISPATCHING TRUCK SHIPMENTS OF MOBIL HEAVY PETROLEUM-PRODUCTS SO INTERFACES LA English DT Article AB Mobil Oil Corporation consolidates and dispatches truck shipments of heavy petroleum products-lubricants in packages and in bulk-from 10 lubricant plants nationwide. It dispatches hundreds of orders daily either individually or as consolidated truckloads, using a very nonhomogeneous fleet of Mobil-controlled and contract vehicles and common carriers. Shipment schedules may span several days and include stops to pick up returned drums or entire trailers. Shipping costs depend upon the vehicle used, the shipment size, the locations of the stops, and the route distance and time. Candidate consolidations are generated automatically or with dispatcher assistance. Then, the dispatcher uses optimization to select a minimal-cost set of schedules. Mobil has been using this system for three years, reducing annual transportation;costs by about $1 million (US). C1 USN,POSTGRAD SCH,MONTEREY,CA 93943. UNIV MISSOURI,SCH BUSINESS ADM,ST LOUIS,MO 63121. RP BAUSCH, DO (reprint author), INSIGHT INC,19820 VILLAGE OFF COURT,BEND,OR 97702, USA. NR 7 TC 17 Z9 17 U1 0 U2 4 PU INST MANAGEMENT SCI PI PROVIDENCE PA 290 WESTMINISTER ST, PROVIDENCE, RI 02903 SN 0092-2102 J9 INTERFACES JI Interfaces PD MAR-APR PY 1995 VL 25 IS 2 BP 1 EP 17 DI 10.1287/inte.25.2.1 PG 17 WC Management; Operations Research & Management Science SC Business & Economics; Operations Research & Management Science GA RN460 UT WOS:A1995RN46000001 ER PT J AU LUQI COOKE, DE AF LUQI COOKE, DE TI HOW TO COMBINE NONMONOTONIC LOGIC AND RAPID PROTOTYPING TO HELP MAINTAIN SOFTWARE SO INTERNATIONAL JOURNAL OF SOFTWARE ENGINEERING AND KNOWLEDGE ENGINEERING LA English DT Article AB This paper explores the possibility of automated support for detecting inconsistencies in software systems and requirements. The inconsistencies are introduced when the environment of the software system changes. We refer to the software environment as its context. We review the recent research progress on nonmonotonic logics, pointing out the significance of these results to software maintenance. We explain how a practical implementation of such logics can be obtained via a simple extension to logic programming in the form of an answer procedure that realizes the Extended Logic Semantics [7] for nonmonotonic logic programs that have a unique answer set (which is a large and useful class of logic programs). We augment the existing automated capabilities of the Computer-Aided Prototyping System (CAPS) for rapid prototyping via the extension to logic programming to provide an improved automated capability for detecting certain kinds of inconsistencies created by implicit requirements changes. We illustrate the significance of this capability via an example prototype for a problem originally suggested by Lehman. C1 USN, POSTGRAD SCH, DEPT COMP SCI, MONTEREY, CA 93943 USA. UNIV TEXAS, DEPT COMP SCI, EL PASO, TX 79968 USA. NR 21 TC 4 Z9 4 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA 5 TOH TUCK LINK, SINGAPORE 596224, SINGAPORE SN 0218-1940 EI 1793-6403 J9 INT J SOFTW ENG KNOW JI Int. J. Softw. Eng. Knowl. Eng. PD MAR PY 1995 VL 5 IS 1 BP 89 EP 118 DI 10.1142/S021819409500006X PG 30 WC Computer Science, Artificial Intelligence; Computer Science, Software Engineering; Engineering, Electrical & Electronic SC Computer Science; Engineering GA QZ917 UT WOS:A1995QZ91700006 ER PT J AU MEHL, MJ PAPACONSTANTOPOULOS, DA COHEN, RE AF MEHL, MJ PAPACONSTANTOPOULOS, DA COHEN, RE TI A TIGHT-BINDING METHOD FOR THE EVALUATION OF THE TOTAL-ENERGY OF LARGE SYSTEMS SO INTERNATIONAL JOURNAL OF THERMOPHYSICS LA English DT Article; Proceedings Paper CT 12th Symposium on Thermophysical Properties CY JUN 19-24, 1994 CL UNIV COLORADO, BOULDER, CO SP NIST, Chem Sci & Technol Lab, Thermophys Div, Amer Soc Mech Engineers, Heat Transfer Div, Comm Thermophys Properties HO UNIV COLORADO DE COPPER; FIRST PRINCIPLES CALCULATIONS; GOLD; METALS; MOLYBDENUM; NIOBIUM; SILVER; TIGHT BINDING; VACANCY FORMATION ENERGY ID VACANCY FORMATION ENERGY; DENSITY-MATRIX; METALS; ENERGETICS; ALUMINUM; SILICON; ALLOYS; MODEL AB A new tight-binding total energy method, suitable for the description of atomic systems containing hundreds of atoms, is described. The method is applied to the calculation of the vacancy-formation energy in the noble metals and several transition metals. The method agrees reasonably well with experiment, even though no information about the vacancies was used in constructing the tight-binding Hamiltonian. C1 CARNEGIE INST WASHINGTON,GEOPHYS LAB,WASHINGTON,DC 20015. CTR HIGH PRESSURE RES,WASHINGTON,DC 20015. RP MEHL, MJ (reprint author), USN,RES LAB,COMPLEX SYST THEORY BRANCH,WASHINGTON,DC 20375, USA. RI Cohen, Ronald/B-3784-2010; Mehl, Michael/H-8814-2016 OI Cohen, Ronald/0000-0001-5871-2359; NR 27 TC 1 Z9 1 U1 0 U2 1 PU PLENUM PUBL CORP PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 SN 0195-928X J9 INT J THERMOPHYS JI Int. J. Thermophys. PD MAR PY 1995 VL 16 IS 2 BP 503 EP 510 DI 10.1007/BF01441916 PG 8 WC Thermodynamics; Chemistry, Physical; Mechanics; Physics, Applied SC Thermodynamics; Chemistry; Mechanics; Physics GA QU937 UT WOS:A1995QU93700022 ER PT J AU EKATERINARIS, JA SCHIFF, LB AF EKATERINARIS, JA SCHIFF, LB TI NAVIER-STOKES SOLUTION FOR AN OSCILLATING DOUBLE-DELTA WING SO JOURNAL OF AIRCRAFT LA English DT Article AB Steady-state and unsteady Navier-Stokes solutions of the vortical flow over a double-delta wing configuration, consisting of a sharp leading-edge 76-deg sweep strake and a 40-deg sweep wing section are presented. The governing equations are solved numerically with an upwind-biased, implicit, iterative, and factorized numerical scheme. At fixed angles of incidence, the steady-state flow and the leeward-side vortex system resulting from the strake and wing vortices are investigated for subsonic, high Reynolds number flows. The unsteady flowfield development resulting from the large amplitude oscillatory motion of the wing around a mean angle of attack of alpha = 22.4 deg, with an amplitude of 6.8 deg, is also investigated. Lag in the appearance of vortex breakdown caused by the pitch-up motion is found in accordance with the experiment. The computed unsteady solution is compared with available unsteady flow measurements at several phase angles during the oscillation cycle. RP EKATERINARIS, JA (reprint author), NASA,AMES RES CTR,USN,POSTGRAD SCH,DEPT AERONAT & ASTRONAUT,JOINT INST AERONAUT,MOFFETT FIELD,CA 94035, USA. NR 0 TC 2 Z9 2 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0021-8669 J9 J AIRCRAFT JI J. Aircr. PD MAR-APR PY 1995 VL 32 IS 2 BP 228 EP 234 DI 10.2514/3.46708 PG 7 WC Engineering, Aerospace SC Engineering GA QR089 UT WOS:A1995QR08900002 ER PT J AU ROGERS, DF AF ROGERS, DF TI POSSIBLE IMPOSSIBLE TURN SO JOURNAL OF AIRCRAFT LA English DT Article AB Turning back after engine failure during the takeoff phase of flight in a single engine aircraft is examined using a simplified analytical model. The important parameters are identified. The analysis shows that the optimum flight path is teardrop-shaped with a 45-deg bank angle at stall velocity during the turn. The effects of engine failure altitude, wind direction and velocity, climbout velocity, bank angle, and velocity in the turn on the required runway length are examined. The results show that the typical recommendations for general aviation single engine aircraft are not optimum. RP ROGERS, DF (reprint author), USN ACAD,DEPT AEROSP ENGN,ANNAPOLIS,MD 21402, USA. NR 0 TC 11 Z9 12 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0021-8669 J9 J AIRCRAFT JI J. Aircr. PD MAR-APR PY 1995 VL 32 IS 2 BP 392 EP 397 DI 10.2514/3.46728 PG 6 WC Engineering, Aerospace SC Engineering GA QR089 UT WOS:A1995QR08900022 ER PT J AU LOVE, RW AF LOVE, RW TI ORIGINS OF THE AMERICAN NAVY - SEA POWER IN THE COLONIES AND THE NEW NATION - OCONNOR,RG SO JOURNAL OF AMERICAN HISTORY LA English DT Book Review RP LOVE, RW (reprint author), USN ACAD,ANNAPOLIS,MD 21402, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU ORGAN AMER HISTORIANS PI BLOOMINGTON PA 112 N BRYAN ST, BLOOMINGTON, IN 47401 SN 0021-8723 J9 J AM HIST JI J. Am. Hist. PD MAR PY 1995 VL 81 IS 4 BP 1679 EP 1680 DI 10.2307/2081675 PG 2 WC History SC History GA QP952 UT WOS:A1995QP95200067 ER PT J AU GUO, QX WANG, JJ CLIFTON, RJ MERTAUGH, LJ AF GUO, QX WANG, JJ CLIFTON, RJ MERTAUGH, LJ TI ELASTIC ANALYSES OF PLANAR CRACKS OF ARBITRARY SHAPE SO JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME LA English DT Article ID STRESS INTENSITY FACTORS; BOUNDARY; EQUATIONS AB A numerical method is presented for planar cracks of arbitrary shape. The fundamental solution for a dislocation segment is obtained from the point force solution and used to derive three coupled surface integral equations in which the crack-face tractions are expressed in terms of the gradients of the relative crack-surface displacements. Because the singularity of the kernel in the integral equations is one order less for fundamental solutions based on dislocation segments than for those based on dislocation loops or the body force method no special numerical techniques are required. Most of the integrations over elements are evaluated analytically. The integral equations are solved numerically by covering the crack surface with triangular elements, and taking the relative displacements to vary linearly over the elements. The mesh is generated by optimizing the local aspect ratio, which is related to the difference in the principal stretches of the mapping of a square reference mesh onto the fracture surface. This mesh generator allows crack of a wide variety of shapes to be analyzed with good accuracy. Comparison with known solutions indicate that accurate numerical solutions are obtained with a relatively coarse mesh. C1 BROWN UNIV,DIV ENGN,PROVIDENCE,RI 02912. USN,DIV AIR WARFARE CTR,PATUXENT RIVER,MD 20670. RP GUO, QX (reprint author), TERRATEK INC,420 WAKARA WAY,SALT LAKE CITY,UT 84108, USA. NR 24 TC 1 Z9 1 U1 0 U2 2 PU ASME-AMER SOC MECHANICAL ENG PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 0021-8936 J9 J APPL MECH-T ASME JI J. Appl. Mech.-Trans. ASME PD MAR PY 1995 VL 62 IS 1 BP 108 EP 115 DI 10.1115/1.2895890 PG 8 WC Mechanics SC Mechanics GA QR187 UT WOS:A1995QR18700014 ER PT J AU DAWSON, RL SULLIVAN, GM AF DAWSON, RL SULLIVAN, GM TI A THEORETICAL INVESTIGATION OF THE EFFECT OF STRUCTURAL STIFFNESS IN UNDERWATER SHOCK-WAVE LOADING USING THE PLANE-WAVE APPROXIMATION SO JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME LA English DT Note AB The equations of motion for an explosively loaded infinite plate with stiffness are derived. The structural response of this plate is compared to that of an explosively loaded infinite plate without stiffness. The effect of stiffness on water cavitation and plate displacement is determined. RP DAWSON, RL (reprint author), USN,CTR SURFACE WARFARE,UNDERWATER EXPLOS RES DEPT,CARDEROCK DIV,PORTSMOUTH,VA 23709, USA. NR 5 TC 0 Z9 0 U1 1 U2 1 PU ASME-AMER SOC MECHANICAL ENG PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 0021-8936 J9 J APPL MECH-T ASME JI J. Appl. Mech.-Trans. ASME PD MAR PY 1995 VL 62 IS 1 BP 260 EP 262 DI 10.1115/1.2895921 PG 3 WC Mechanics SC Mechanics GA QR187 UT WOS:A1995QR18700046 ER PT J AU GRUBER, JB MORRISON, CA HARRIS, DC SELTZER, MD ALLIK, TH HUTCHINSON, JA SCRIPSICK, MP AF GRUBER, JB MORRISON, CA HARRIS, DC SELTZER, MD ALLIK, TH HUTCHINSON, JA SCRIPSICK, MP TI SPECTRA OF TETRAVALENT CHROMIUM IN CALCIUM FLUOROPHOSPHATE SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID SPECTROSCOPIC PROPERTIES; FORSTERITE; LASER; IONS C1 USA,RES LAB,ADELPHI,MD 20783. USN,CTR AIR WARFARE,RES DEPT,DIV CHEM,CHINA LAKE,CA 93555. SCI APPLICAT INT CORP,MCLEAN,VA 22102. USA,NIGHT VIS & ELECTR SENSORS DIRECTORATE,FT BELVOIR,VA 22060. W VIRGINIA UNIV,DEPT PHYS,MORGANTOWN,WV 26505. RP GRUBER, JB (reprint author), SAN JOSE STATE UNIV,DEPT PHYS,SAN JOSE,CA 95192, USA. NR 37 TC 2 Z9 2 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 MAR 1 PY 1995 VL 77 IS 5 BP 2116 EP 2123 DI 10.1063/1.358787 PG 8 WC Physics, Applied SC Physics GA RC303 UT WOS:A1995RC30300048 ER PT J AU COTAL, HL WALTERS, RJ SUMMERS, GP MESSENGER, SR AF COTAL, HL WALTERS, RJ SUMMERS, GP MESSENGER, SR TI ELECTRON-IRRADIATION OF 2-TERMINAL, MONOLITHIC INP/GA0.47IN0.53AS TANDEM SOLAR-CELLS SO JOURNAL OF APPLIED PHYSICS LA English DT Article C1 SFA INC,LANDOVER,MD 20785. RP COTAL, HL (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 19 TC 1 Z9 1 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD MAR 1 PY 1995 VL 77 IS 5 BP 2173 EP 2176 DI 10.1063/1.358795 PG 4 WC Physics, Applied SC Physics GA RC303 UT WOS:A1995RC30300057 ER PT J AU HENNRIKUS, WL SHIN, AY KLINGELBERGER, CE AF HENNRIKUS, WL SHIN, AY KLINGELBERGER, CE TI SELF-ADMINISTERED NITROUS-OXIDE AND A HEMATOMA BLOCK FOR ANALGESIA IN THE OUTPATIENT REDUCTION OF FRACTURES IN CHILDREN SO JOURNAL OF BONE AND JOINT SURGERY-AMERICAN VOLUME LA English DT Article ID PAIN AB We prospectively studied the efficacy and safety of self-administered nitrous oxide combined with a hematoma block in 100 children who had a closed reduction of a fracture in the emergency department. No child was excluded from the study because of the type of fracture. The average Children's Hospital of Eastern Ontario pain score (CHEOPS), as determined by the emergency-medicine physician who observed the reduction, was 6.8 points (range, 4 to 12 points). The average grade for pain, as recalled by the patient and indicated on a visual-analogue pain scale that ranged from 0 to 10 points, was 6.5 points before the patient received any analgesia and 1.2 points immediately after reduction of the fracture and application of a cast. Ninety-seven patients obtained an analgesic effect from the combination of nitrous oxide and a hematoma block. The three remaining children obtained no effect, and the fracture was reduced with use of general anesthesia. Three additional reductions were technically unsuccessful because of rotational or angular malalignment, and a second reduction was performed with general anesthesia. There were no complications such as vomiting, respiratory depression, a change in the oxygen-saturation level, infection, or nerve injury. We concluded that self-administration of nitrous oxide combined with use of a hematoma block is a safe and effective technique of analgesia for the outpatient reduction of fractures in children. C1 USN,MED CTR,DEPT ORTHOPAED SURG,SAN DIEGO,CA 92152. USN,MED CTR,DEPT EMERGENCY MED,SAN DIEGO,CA 92152. USN,MED CTR,DEPT CLIN INVEST,SAN DIEGO,CA 92152. OI Shin, Alexander/0000-0001-9658-8192 NR 25 TC 31 Z9 31 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 MAR PY 1995 VL 77A IS 3 BP 335 EP 339 PG 5 WC Orthopedics; Surgery SC Orthopedics; Surgery GA QN850 UT WOS:A1995QN85000001 PM 7890780 ER PT J AU WIESENEKKER, G KROES, GJ BAERENDS, EJ MOWREY, RC AF WIESENEKKER, G KROES, GJ BAERENDS, EJ MOWREY, RC TI DISSOCIATION OF H-2 ON CU(100) - DYNAMICS ON A NEW 2-DIMENSIONAL POTENTIAL-ENERGY SURFACE SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID DEPENDENT SCHRODINGER-EQUATION; WAVE-PACKET METHOD; CU(111) SURFACE; METAL-SURFACES; NI-SURFACES; VIBRATIONAL-EXCITATION; ASSOCIATIVE DESORPTION; ACTIVATED ADSORPTION; TRANSLATIONAL ENERGY; STICKING COEFFICIENT C1 USN, RES LAB, DIV CHEM, WASHINGTON, DC 20375 USA. RP VRIJE UNIV AMSTERDAM, DE BOELELAAN 1083, 1081 HV AMSTERDAM, NETHERLANDS. RI Baerends, Evert Jan/F-7206-2011 OI Baerends, Evert Jan/0000-0002-3045-4906 NR 75 TC 73 Z9 73 U1 1 U2 6 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 0021-9606 EI 1089-7690 J9 J CHEM PHYS JI J. Chem. Phys. PD MAR 1 PY 1995 VL 102 IS 9 BP 3873 EP 3883 DI 10.1063/1.468547 PG 11 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA QH968 UT WOS:A1995QH96800039 ER PT J AU WAYTENA, GL HOFF, HA WOLCOTT, RR BROUSSARD, PR VOLD, CL LEE, CB AF WAYTENA, GL HOFF, HA WOLCOTT, RR BROUSSARD, PR VOLD, CL LEE, CB TI EFFECTS OF SUBSTRATE SMOOTHNESS ON THE MICROSTRUCTURE OF YBA2CU3O7-X/Y2O3/YBA2CU3O7-X TRILAYERS SO JOURNAL OF ELECTRONIC MATERIALS LA English DT Article DE JOSEPHSON JUNCTIONS; STRAIN; SUBSTRATE SMOOTHNESS; SUPERCONDUCTORS; THIN FILMS; YTTRIA PARTICLES ID THIN-FILMS; ELECTRON-MICROSCOPY AB Transmission electron microscopy was used to analyze the microstructure of YBa2Cu3O7-x/Y2O3/YBa2Cu3O7-x trilayer structures deposited by off-axis sputtering on MgO substrates with varying degrees of roughness. Substrate surface hillocks with a peak-to-valley height of about 4.5 nm were found to contribute to strain that extended through the film and disrupted the smoothness of the Y2O3 layer. In some cases, these hillocks served as nucleation sites for yttria precipitates. Such defects may seriously jeopardize the realization of weak-link Josephson junctions. C1 N CAROLINA STATE UNIV,RALEIGH,NC 27695. N CAROLINA AGR & TECH STATE UNIV,DEPT ELECT ENGN,GREENSBORO,NC 27411. RP WAYTENA, GL (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 16 TC 2 Z9 2 U1 0 U2 0 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 0361-5235 J9 J ELECTRON MATER JI J. Electron. Mater. PD MAR PY 1995 VL 24 IS 3 BP 189 EP 195 DI 10.1007/BF02659894 PG 7 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary; Physics, Applied SC Engineering; Materials Science; Physics GA QK186 UT WOS:A1995QK18600013 ER PT J AU CHERMAK, JM PATRICK, RH AF CHERMAK, JM PATRICK, RH TI A WELL-BASED COST FUNCTION AND THE ECONOMICS OF EXHAUSTIBLE RESOURCES - THE CASE OF NATURAL-GAS SO JOURNAL OF ENVIRONMENTAL ECONOMICS AND MANAGEMENT LA English DT Article ID EXTRACTION AB A cost function for natural gas production is estimated, using a pool of data from 29 wells. Statistically exact tests are performed for parameter stability across locations, formations, wells, and producing firms. Costs are determined to be inversely related to remaining recoverable reserves, and marginal costs of production are decreasing in all cases. Theoretical implications of these cost characteristics on optimal exhaustible resource extraction are analyzed. Although marginal cost is decreasing, production effects on the resource stock imply that an interior production path may be optimal. Conditions under which production optimally occurs at the capacity bound are delineated, and optimal interior production paths are characterized. (C) 1995 Academic Press, Inc. C1 USN,POSTGRAD SCH,DRMI,MONTEREY,CA 93943. RP CHERMAK, JM (reprint author), RUTGERS STATE UNIV,GRAD SCH MANAGEMENT,DEPT FINANCE & ECON,NEWARK,NJ 07102, USA. NR 21 TC 19 Z9 20 U1 2 U2 6 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 SN 0095-0696 J9 J ENVIRON ECON MANAG JI J.Environ.Econ.Manage. PD MAR PY 1995 VL 28 IS 2 BP 174 EP 189 DI 10.1006/jeem.1995.1012 PG 16 WC Business; Economics; Environmental Studies SC Business & Economics; Environmental Sciences & Ecology GA QT227 UT WOS:A1995QT22700003 ER PT J AU REHERMANN, B FOWLER, P SIDNEY, J PERSON, J REDEKER, A BROWN, M MOSS, B SETTE, A CHISARI, FV AF REHERMANN, B FOWLER, P SIDNEY, J PERSON, J REDEKER, A BROWN, M MOSS, B SETTE, A CHISARI, FV TI THE CYTOTOXIC T-LYMPHOCYTE RESPONSE TO MULTIPLE HEPATITIS-B VIRUS POLYMERASE EPITOPES DURING AND AFTER ACUTE VIRAL-HEPATITIS SO JOURNAL OF EXPERIMENTAL MEDICINE LA English DT Article ID NUCLEOCAPSID ANTIGEN; BINDING PEPTIDES; EXPRESSION; PROTEIN; CELLS; RECOGNIZE; INFECTION AB Cytotoxic T lymphocytes (CTL) are thought to contribute to viral clearance and liver cell injury during hepatitis B virus (HBV) infection. Using a strategy involving the in vitro stimulation of peripheral blood mononuclear cells (PBMC) with HBV-derived synthetic peptides containing HLA-A2.1, -A31, and -Aw68 binding motifs, we have previously described CTL responses to several epitopes within the HBV nucleocapsid and envelope antigens in patients with acute hepatitis. In this study we define six HLA-A2-restricted CTL epitopes located in the highly conserved reverse transcriptase and RNase H domains of the viral polymerase protein, and we show that the CTL response to polymerase is polyclonal, multispecific, and mediated by CD8(+) T cells in patients with acute viral hepatitis, but that it is not detectable in patients with chronic HBV infection or uninfected healthy blood donors. Importantly, the peptide-activated CTL recognize target cells that express endogenously synthesized polymerase protein, suggesting that these peptides represent naturally processed viral epitopes. DNA sequence analysis of the viruses in patients who did not respond to peptide stimulation indicated that CTL nonresponsiveness was not due to infection by viral variants that differed in sequences from the synthetic peptides. CTL specific for one of the epitopes were unable to recognize several naturally occurring viral variants, except at high peptide concentration, underlining the HBV subtype specificity of this response. Furthermore, CTL responses against polymerase, core, and envelope epitopes were detectable for more than a year after complete clinical recovery and seroconversion, reflecting either the persistence of trace amounts of virus or the presence of long lived memory CTL in the absence of viral antigen. Finally, we demonstrated that wild type viral DNA and RNA can persist indefinitely, in trace quantities, in the serum and PBMC after complete clinical and serological recovery, despite a concomitant, vigorous, and sustained polyclonal CTL response. Since viral persistence is not due to escape from CTL recognition under these conditions, the data suggest that HBV may retreat into immunologically privileged sites from which it can seed the circulation and reach CTL-inaccessible tissues, thereby maintaining the CTL response in apparently cured individuals and, perhaps, prolonging the liver disease in patients with chronic hepatitis. C1 SCRIPPS RES INST, DEPT MOLEC & EXPTL MED, LA JOLLA, CA 92037 USA. CYTEL CORP, DEPT IMMUNOL, SAN DIEGO, CA 92121 USA. USN HOSP, DEPT GASTROENTEROL, SAN DIEGO, CA 92134 USA. UNIV SO CALIF, RANCHO LOS AMIGOS MED CTR, SCH MED, LIVER UNIT, DOWNEY, CA 90033 USA. NIAID, VIRAL DIS LAB, BETHESDA, MD 20892 USA. RI Chisari, Francis/A-3086-2008; OI Chisari, Francis/0000-0002-4832-1044 FU NCRR NIH HHS [RR-00833]; NIAID NIH HHS [AI-20001] NR 28 TC 351 Z9 367 U1 0 U2 6 PU ROCKEFELLER UNIV PRESS PI NEW YORK PA 222 E 70TH STREET, NEW YORK, NY 10021 SN 0022-1007 J9 J EXP MED JI J. Exp. Med. PD MAR 1 PY 1995 VL 181 IS 3 BP 1047 EP 1058 DI 10.1084/jem.181.3.1047 PG 12 WC Immunology; Medicine, Research & Experimental SC Immunology; Research & Experimental Medicine GA QH747 UT WOS:A1995QH74700021 PM 7532675 ER PT J AU LEFEBVRE, PJ BARKER, WP AF LEFEBVRE, PJ BARKER, WP TI CENTRIFUGAL PUMP PERFORMANCE DURING TRANSIENT OPERATION SO JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME LA English DT Article AB The effect of transient operation on the hydrodynamic performance of a centrifugal pump impeller was investigated experimentally. All experiments were conducted in the Naval Undersea Warfare Center's Impeller Test Facility (ITF), which was designed and built for transient and steady-state operation impeller research. The ITF provides transient operation through simultaneous control of both impeller rotational speed and flow rare over time. The impeller was accelerated from rest with peak angular accelerations up to 720 radians/s(2) and inlet flow mean accelerations up to 1.7 g, reaching a peak rotational speed of 2400 rpm and a flow rate of 416 l/s. The impeller was then decelerated to rest. Results showed substantial transient effects in overall impeller performance and demonstrated that the quasi-steady assumptions commonly used for the design of impellers that operate under high transient (accelerating or decelerating) conditions are not valid. RP LEFEBVRE, PJ (reprint author), USN,DIV UNDERSEA WARFARE CTR,NEWPORT,RI 02841, USA. NR 8 TC 31 Z9 32 U1 0 U2 1 PU ASME-AMER SOC MECHANICAL ENG PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 0098-2202 J9 J FLUID ENG-T ASME JI J. Fluids Eng.-Trans. ASME PD MAR PY 1995 VL 117 IS 1 BP 123 EP 128 DI 10.1115/1.2816801 PG 6 WC Engineering, Mechanical SC Engineering GA QP809 UT WOS:A1995QP80900024 ER PT J AU ALESSANDRIA, M KISER, WR AF ALESSANDRIA, M KISER, WR TI SCREENING FOR SICKLE-CELL TRAIT SO JOURNAL OF GENERAL INTERNAL MEDICINE LA English DT Letter RP ALESSANDRIA, M (reprint author), USN HOSP,DEPT FAMILY PRACTICE,JACKSONVILLE,FL 32214, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU BLACKWELL SCIENCE PUBL INC CAMBRIDGE PI CAMBRIDGE PA 238 MAIN ST, CAMBRIDGE, MA 02142 SN 0884-8734 J9 J GEN INTERN MED JI J. Gen. Intern. Med. PD MAR PY 1995 VL 10 IS 3 BP 174 EP 174 DI 10.1007/BF02599679 PG 1 WC Health Care Sciences & Services; Medicine, General & Internal SC Health Care Sciences & Services; General & Internal Medicine GA QM469 UT WOS:A1995QM46900012 PM 7619173 ER PT J AU FEDDER, JA LYON, JG SLINKER, SP MOBARRY, CM AF FEDDER, JA LYON, JG SLINKER, SP MOBARRY, CM TI TOPOLOGICAL-STRUCTURE OF THE MAGNETOTAIL AS A FUNCTION OF INTERPLANETARY MAGNETIC-FIELD DIRECTION SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article ID SOLAR-WIND; MAGNETOPAUSE RECONNECTION; ELECTRIC-FIELD; MAGNETOSPHERE; ENERGY; VOLTAGE; MODELS AB Magnetic reconnection between the interplanetary magnetic field (IMF) and the geomagnetic field is thought to play a major role in the transfer of solar wind momentum and energy to the magnetosphere. As the angle between the IMF and the geomagnetic field is changed at the bow of the magnetosphere, the topological record of the location of the reconnection region should be recorded in the magnetosheath and on the magnetopause along the flanks of the tail, because the super fast how freezes strong magnetic gradients formed in the bow reconnection regions into the plasma downstream. In this report, we present results from a three-dimensional, magnetohydrodynamic (MHD), global numerical simulation code for the location of the separatrix between unconnected IMF magnetosheath field lines and reconnected field lines which penetrate the magnetopause and connect to the polar ionosphere. The angle between the IMF direction and the line where the separatrix crosses the magnetopause is shown to be a sensitive function of the IMF clock angle. We also explain how this behavior can be used to derive an approximate relation for the dependence of the cross-polar voltage on the IMF clock angle. We conclude with a note of caution concerning the importance of physical boundary conditions in magnetoplasma simulations. C1 SFA INC,LANDOVER,MD. DARTMOUTH COLL,DEPT PHYS & ASTRON,HANOVER,NH. NASA,GODDARD SPACE FLIGHT CTR,CTR COMPUTAT SCI,GREENBELT,MD 20771. RP FEDDER, JA (reprint author), USN,RES LAB,DIV PLASMA PHYS,BEAM PHYS BRANCH,CODE 4790,WASHINGTON,DC 20375, USA. NR 31 TC 113 Z9 117 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 MAR 1 PY 1995 VL 100 IS A3 BP 3613 EP 3621 DI 10.1029/94JA02577 PG 9 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QL214 UT WOS:A1995QL21400025 ER PT J AU FEDDER, JA LYON, JG AF FEDDER, JA LYON, JG TI THE EARTHS MAGNETOSPHERE IS 165 R(E) LONG - SELF-CONSISTENT CURRENTS, CONVECTION, MAGNETOSPHERIC STRUCTURE, AND PROCESSES FOR NORTHWARD INTERPLANETARY MAGNETIC-FIELD SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article ID GLOBAL SIMULATION; BOUNDARY-LAYER; TAIL; SOUTHWARD; MODEL; IMF AB The subject of this paper is a self-consistent, magnetohydrodynamic numerical realization for the Earth's magnetosphere which is in a quasi-steady dynamic equilibrium for a due northward interplanetary magnetic field (IMF). Although a few hours of steady northward IMF are required for this asymptotic state to be set up, it should still be of considerable theoretical interest because it constitutes a ''ground state'' for the solar wind-magnetosphere interaction. Moreover, particular features of this ground state magnetosphere should be observable even under less extreme solar wind conditions. Certain characteristics of this magnetosphere, namely, NBZ Birkeland currents, four-cell ionospheric convection, a relatively weak cross-polar potential, and a prominent flow boundary layer, are widely expected. Other characteristics, such as no open tail lobes, no Earth-connected magnetic flux beyond 155 R(E) downstream, magnetic merging in a closed topology at the cusps, and a ''tadpole'' shaped magnetospheric boundary, might not be expected. In this paper, we will present the evidence for this unusual but interesting magnetospheric equilibrium. We will also discuss our present understanding of this singular state. C1 DARTMOUTH COLL,DEPT PHYS & ASTRON,HANOVER,NH. SFA INC,LANDOVER,MD. RP FEDDER, JA (reprint author), USN,RES LAB,DIV PLASMA PHYS,BEAM PHYS BRANCH,CODE 4790,WASHINGTON,DC 20375, USA. NR 28 TC 135 Z9 137 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 MAR 1 PY 1995 VL 100 IS A3 BP 3623 EP 3635 DI 10.1029/94JA02633 PG 13 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QL214 UT WOS:A1995QL21400026 ER PT J AU ALFRIEND, KT AF ALFRIEND, KT TI SPECIAL SECTION - HUBBLE-SPACE-TELESCOPE CONTROL SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS LA English DT Editorial Material RP ALFRIEND, KT (reprint author), USN,POSTGRAD SCH,MONTEREY,CA 93943, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0731-5090 J9 J GUID CONTROL DYNAM JI J. Guid. Control Dyn. PD MAR-APR PY 1995 VL 18 IS 2 BP 193 EP 193 DI 10.2514/3.56678 PG 1 WC Engineering, Aerospace; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA QU336 UT WOS:A1995QU33600001 ER PT J AU GEORGE, RD SNOW, AW AF GEORGE, RD SNOW, AW TI SYNTHESIS OF 3-NITROPHTHALONITRILE AND TETRA-ALPHA-SUBSTITUTED PHTHALOCYANINES SO JOURNAL OF HETEROCYCLIC CHEMISTRY LA English DT Article ID POLYMERS; RED AB An efficient synthesis of phthalocyanines prepared from ortho-substituted phthalonitriles is described. The precursor to these phthalocyanines, 3-nitrophthalonitrile, is a key reagent for syntheses of phthalonitriles substituted at the 3-position by means of nucleophilic aromatic substitutions. An example of this type of phthalocyanine, prepared from 3-(4-cumylphenoxy)phthalonitrile, is compared with the phthalocyanine derived from 4-(4-cumylphenoxy)phthalonitrile. Substitution of the phthalocyanine at this more sterically crowded site causes a 20 nm bathochromic shift of the Q-band (pi-pi* transition). RP GEORGE, RD (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 23 TC 77 Z9 77 U1 1 U2 5 PU HETERO CORPORATION PI TAMPA PA BOX 20285, TAMPA, FL 33622-0285 SN 0022-152X J9 J HETEROCYCLIC CHEM JI J. Heterocycl. Chem. PD MAR-APR PY 1995 VL 32 IS 2 BP 495 EP 498 PG 4 WC Chemistry, Organic SC Chemistry GA QW375 UT WOS:A1995QW37500019 ER PT J AU JAMUR, MC FARACO, CD LUNARDI, LO SIRAGANIAN, RP OLIVER, C AF JAMUR, MC FARACO, CD LUNARDI, LO SIRAGANIAN, RP OLIVER, C TI MICROWAVE FIXATION IMPROVES ANTIGENICITY OF GLUTARALDEHYDE-SENSITIVE ANTIGENS WHILE PRESERVING ULTRASTRUCTURAL DETAIL SO JOURNAL OF HISTOCHEMISTRY & CYTOCHEMISTRY LA English DT Note DE MICROWAVE FIXATION; ELECTRON MICROSCOPY; IMMUNOCYTOCHEMISTRY; GLUTARALDEHYDE-SENSITIVE ANTIGENS; MAST CELLS ID POSTEMBEDDING IMMUNOGOLD TECHNIQUE; AFFINITY IGE RECEPTOR; ELECTRON-MICROSCOPY; HISTOLOGICAL FIXATION; ENERGY FIXATION; HUMAN-TISSUES; MAST-CELLS; LIGHT; IRRADIATION; LOCALIZATION AB Microwave fixation for electron microscopy has been used primarily for post-embedding immunocytochemistry. The present study examined the ability of microwave fixation to preserve the antigenicity of glutaraldehyde-sensitive antigens for pre-embedding immunocytochemistry. Five monoclonal antibodies (MAbs) directed against cell surface components of rat mast cells were tested. The MAbs failed to show any labeling of conventionally fixed rat bone marrow-derived mast cells even at glutaraldehyde concentrations as low as 0.1%. Strong staining of mast cell plasma membranes was seen when bone marrow was initially fixed with 2% formaldehyde and then refixed in 2% glutaraldehyde/2% formaldehyde after immunostaining. However, the ultrastructural preservation of the cells was poor, Antigenicity and morphological detail were both preserved when bone marrow was fixed in 0.05% glutaraldehyde/2% formaldehyde for 4 sec in a 550-W microwave oven, With this method, mast cells in various stages of maturation as well as cells that did not contain granules were immunoreactive. This method should prove useful with antigens from many different cell types that are sensitive to glutaraldehyde fixation. C1 OFF NAVAL RES,BIOMED SCI & TECHNOL PROGRAM,ARLINGTON,VA 22217. FED UNIV PARANA,DEPT BIOL CELULAR,CURITIBA,PARANA,BRAZIL. RIBEIRAO PRETO UNIV,FAC MED,DEPT MORFOL,RIBEIRAO PRET,BRAZIL. NIDR,IMMUNOL LAB,BETHESDA,MD 20892. RI Jamur, Maria Celia/L-5520-2016 OI Jamur, Maria Celia/0000-0001-7065-8543 NR 29 TC 22 Z9 23 U1 0 U2 1 PU HISTOCHEMICAL SOC INC PI NEW YORK PA MT SINAI MEDICAL CENTER 19 EAST 98TH ST SUTIE 9G, NEW YORK, NY 10029 SN 0022-1554 J9 J HISTOCHEM CYTOCHEM JI J. Histochem. Cytochem. PD MAR PY 1995 VL 43 IS 3 BP 307 EP 311 PG 5 WC Cell Biology SC Cell Biology GA QJ287 UT WOS:A1995QJ28700009 PM 7868860 ER PT J AU BRODINE, SK HYAMS, KC MOLGAARD, CA ITO, SI THOMAS, RJ ROBERTS, CR GOLBECK, AL OLDFIELD, EC BLATTNER, WA AF BRODINE, SK HYAMS, KC MOLGAARD, CA ITO, SI THOMAS, RJ ROBERTS, CR GOLBECK, AL OLDFIELD, EC BLATTNER, WA TI THE RISK OF HUMAN T-CELL LEUKEMIA-VIRUS AND VIRAL-HEPATITIS INFECTION AMONG US MARINES STATIONED IN OKINAWA, JAPAN SO JOURNAL OF INFECTIOUS DISEASES LA English DT Note ID UNITED-STATES-NAVY; SEXUAL TRANSMISSION; MILITARY PERSONNEL; DISEASES; ANTIBODY AB The prevalence and incidence of human T cell leukemia virus type I/II (HTLV-I/II) and hepatitis A, B, and C virus infection were determined among US Marines stationed in Okinawa, Japan. Of 2875 personnel, 2 (0.07%) had antibody to HTLV-I/II. After 1-3 years, no HTLV seroconversions were observed, although 23% reported sexual contact with Okinawans. Of 1010 hepatitis-tested marines, 121 (12%) had antibody to hepatitis A virus (anti-HAV), 26 (2.6%) had antibody to hepatitis B core antigen (anti-HBc), and 2 (0.2%) had antibody to hepatitis C virus (anti-HCV). On follow-up, 1 subject seroconverted to anti-HAV, 8 to anti-HBc, and none to anti-HCV. Most marines with recent hepatitis B infection were young, single, and enlisted and had been on short deployments to other countries in Southeast Asia. Marines stationed in Okinawa are not at high risk for HTLV infection but are at increased risk for hepatitis B infection and should be considered for vaccination. C1 USN,MED CTR,DEPT INTERNAL MED,DIV INFECT DIS,SAN DIEGO,CA 92152. NCI,NAVAL MED RES INST,DIV EPIDEMIOL,BETHESDA,MD. NCI,VIRAL EPIDEMIOL SECT,BETHESDA,MD. NAVAL HOSP OKINAWA,DEPT PREVENT MED,MARINE EXPEDITIONARY FORCE 3,OKINAWA,JAPAN. WALTER REED ARMY INST RES,DIV RETROVIROL,WASHINGTON,DC. RP BRODINE, SK (reprint author), SAN DIEGO STATE UNIV,NAVAL HLTH RES CTR,GRAD SCH PUBL HLTH,DEPT MATH SCI,SAN DIEGO,CA 92186, USA. NR 17 TC 5 Z9 6 U1 0 U2 0 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0022-1899 J9 J INFECT DIS JI J. Infect. Dis. PD MAR PY 1995 VL 171 IS 3 BP 693 EP 696 PG 4 WC Immunology; Infectious Diseases; Microbiology SC Immunology; Infectious Diseases; Microbiology GA QJ455 UT WOS:A1995QJ45500028 PM 7876620 ER PT J AU MONSHIPOURI, M RUDOLPH, AS AF MONSHIPOURI, M RUDOLPH, AS TI LIPOSOME-ENCAPSULATED ALGINATE - CONTROLLED HYDROGEL PARTICLE FORMATION AND RELEASE SO JOURNAL OF MICROENCAPSULATION LA English DT Article DE LIPOSOME; ALGINATE; HYDROGEL PARTICLE; DRUG RELEASE ID IMMUNOLOGICAL ADJUVANTS; MULTILAMELLAR; PHOSPHOLIPIDS; IONOPHORES; SYSTEM AB Large unilamellar liposomes of dipalmitoyl phosphatidylcholine have been employed as reaction sites for calcium alginate gelation. Encapsulation of sodium alginate was accomplished by extrusion of phospholipid dispersions through polycarbonate filter of uniform pore size followed by incubation with high concentrations of calcium chloride. The diffusion of calcium into the liposome interior resulted in alginate gelatin within the liposome. Detergent treatment of the liposomes resulted in solubilization of the lipid bilayer with subsequent release of the alginate beads which were measured by laser light scattering and electron microscopy. The release profiles of both the liposomes with entrapped alginate beads and the alginate beads (released by detergent treatment of the liposomes) were determined using cytochrome-c as a marker for release. The release profiles show a rapid release of cytochrome-e over the first 2 for both preparations with slower subsequent release rates for the liposomes with encapsulated alginate beads. The similar early profile may be due to the release of cytochrome-e from bound calcium alginate adsorbed to the outer leaflet of the liposome. This is also supported by calorimetric results which indicate a marked reduction in the enthalpy of the main gel to liquid crystalline phase transition of multilamellar and large unilamellar dispersions of the lipid. This method results in the fabrication of easily controlled, unimodal submicron hydrogel particles which may be used for controlled-release applications. C1 USN,RES LAB,CTR BIOMOLEC SCI & ENGN,WASHINGTON,DC 20375. GEORGETOWN UNIV,DEPT BIOCHEM,WASHINGTON,DC 20007. NR 33 TC 19 Z9 20 U1 1 U2 10 PU TAYLOR & FRANCIS LTD LONDON PI LONDON PA ONE GUNDPOWDER SQUARE, LONDON, ENGLAND EC4A 3DE SN 0265-2048 J9 J MICROENCAPSUL JI J. Microencapsul. PD MAR-APR PY 1995 VL 12 IS 2 BP 117 EP 127 DI 10.3109/02652049509015282 PG 11 WC Chemistry, Applied; Engineering, Chemical; Pharmacology & Pharmacy SC Chemistry; Engineering; Pharmacology & Pharmacy GA QP475 UT WOS:A1995QP47500001 PM 7629654 ER PT J AU GRISCOM, DL COOK, M AF GRISCOM, DL COOK, M TI SI-29 SUPERHYPERFINE INTERACTIONS OF THE E' CENTER - A POTENTIAL PROBE OF RANGE-II ORDER IN SILICA GLASS SO JOURNAL OF NON-CRYSTALLINE SOLIDS LA English DT Article; Proceedings Paper CT Symposium on Amorphous Insulators, in Honour of Frank L Galeener CY AUG 07-11, 1994 CL WINTER PK, CO SP USN, OFF NAVAL RES, COLORADO STATE UNIV, MICHIGAN STATE UNIV ID BOND-ANGLE DISTRIBUTION; CRYSTALLINE SIO2; VITREOUS SILICA; OXYGEN VACANCY; HYPERFINE-STRUCTURE; ALPHA-QUARTZ; DEFECTS; MODEL; RELAXATION; NMR AB An electron spin resonance study has been carried out on E'(gamma) centers in gamma-irradiated silica glasses of various Si-29 enrichments, with the object of measuring superhyperfine splittings due to Si-29 nuclei at the three closest silicon neighbors to the silicon of the unpaired spin. Experimental spectra obtained at X band (9.1 GHz) in the absorption mode and at Ka band (35.0 GHz) in the rapid-passage dispersion mode are compared with computer lineshape simulations based on a simple tight-binding model anchored to literature values of the so-called 'weak'Si-29 hyperfine splittings of the E'(1) center in alpha-quartz. Surprisingly few E'(gamma) sites are found in the glasses to exhibit such 'weak' splittings. To reconcile this result with the model assumption made by Mozzi and Warren and the supporting analyses of Galeener, it is suppose that dihedral angles in grassy silica might be relatively uniformly distributed and uncorrelated with the Si-O-Si angle distribution in the undamaged glass but that backward puckering relaxations (similar to that calculated by Rudra et al. for the E'(2) center in quartz) may be pervasive at E'(gamma) (oxygen vacancy) sites in glassy silica, causing dihedral angles in the 100 less than or similar to alpha(1) less than or similar to 140 degrees to be 'read out' in the present experiment as failing in the range 80 greater than or similar to alpha(1) greater than or similar to 40 degrees C1 UNIV MASSACHUSETTS,DEPT CHEM ENGN,AMHERST,MA 01003. RP GRISCOM, DL (reprint author), USN,RES LAB,DIV OPT SCI,CODE 5612,4555 OVERLOOK AVE SW,WASHINGTON,DC 20375, USA. NR 46 TC 50 Z9 50 U1 0 U2 2 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 MAR PY 1995 VL 182 IS 1-2 BP 119 EP 134 DI 10.1016/0022-3093(94)00537-0 PG 16 WC Materials Science, Ceramics; Materials Science, Multidisciplinary SC Materials Science GA QK371 UT WOS:A1995QK37100014 ER PT J AU NGAI, KL ROLAND, CM GREAVES, GN AF NGAI, KL ROLAND, CM GREAVES, GN TI AN INTERPRETATION OF QUASI-ELASTIC NEUTRON-SCATTERING AND MOLECULAR-DYNAMICS SIMULATION RESULTS ON THE GLASS-TRANSITION SO JOURNAL OF NON-CRYSTALLINE SOLIDS LA English DT Article; Proceedings Paper CT Symposium on Amorphous Insulators, in Honour of Frank L Galeener CY AUG 07-11, 1994 CL WINTER PK, CO SP USN, OFF NAVAL RES, COLORADO STATE UNIV, MICHIGAN STATE UNIV ID CORRELATED SYSTEMS; ALPHA-RELAXATION; PHASE-SPACE; BEHAVIOR; DEBYE AB Results of recent molecular dynamics simulations and quasielastic neutron scattering experiments performed on several glass-forming materials are discussed and analyzed to show that they are in agreement with the fundamental laws of relaxation Proposed by the coupling model. Specifically, these results exhibit the existence of a temperature independent time, at which the correlation function crosses over from an exponential form, exp - (t/tau(0)), which holds for t < t(c) to a stretched exponential correlation function, exp - (t/tau*)(1-n), which holds for t > t(c). Continuity of the correlation function at t = t(c) leads to the important relation: tau* = [t(c)(-n)tau(0)](1/(1-n)) which has been formerly applied to explain many aspects of the dynamics of glass-forming materials. The characteristics of tau(0) indicate that it is the relaxation time of an independently relaxing species in accordance with the model. C1 EPSRC,DARESBURY LAB,WARRINGTON WA4 4AD,CHESHIRE,ENGLAND. RP NGAI, KL (reprint author), USN,RES LAB,455 OVERLOOK AVE,WASHINGTON,DC 20375, USA. NR 31 TC 18 Z9 18 U1 0 U2 0 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 MAR PY 1995 VL 182 IS 1-2 BP 172 EP 179 DI 10.1016/0022-3093(94)00544-3 PG 8 WC Materials Science, Ceramics; Materials Science, Multidisciplinary SC Materials Science GA QK371 UT WOS:A1995QK37100019 ER PT J AU HEISE, GJ MULLEN, MP AF HEISE, GJ MULLEN, MP TI OROMANDIBULAR DYSTONIA TREATED WITH BOTULINUM TOXIN - REPORT OF CASE SO JOURNAL OF ORAL AND MAXILLOFACIAL SURGERY LA English DT Note ID CERVICAL DYSTONIA; HEMIFACIAL SPASM; FOCAL DYSTONIA; THERAPY C1 USN HOSP,ORAL & MAXILLOFACIAL SURG SERV,OAKLAND,CA. NR 27 TC 8 Z9 8 U1 0 U2 1 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0278-2391 J9 J ORAL MAXIL SURG JI J. Oral Maxillofac. Surg. PD MAR PY 1995 VL 53 IS 3 BP 332 EP 335 DI 10.1016/0278-2391(95)90235-X PG 4 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA QK380 UT WOS:A1995QK38000022 PM 7861285 ER PT J AU COHEN, ME AF COHEN, ME TI DETECTION OF PERIODONTAL PROBING CHANGE BY ANALYSIS OF DISTRIBUTION MEAN AND SKEW SO JOURNAL OF PERIODONTAL RESEARCH LA English DT Article DE PERIODONTAL DISEASE; DETECTION AB A problem associated with probing measurement is that important site-specific change may be obscured by measurement variability. Furthermore, if many sites are monitored there is an increasing likelihood that any particular ''detected change'' might be the result of this measurement error. Since error and multiplicity effects would tend to increase mouth-wise false positive rate, demanding decision thresholds are often set. However, imposition of difficult criteria, increases site-wise false negative rate and therefore reduces utility in the clinical setting. Evaluation of mean change might sometimes be a useful alternative, but also problematic as a few dramatic site-level losses can be inconsequential among many stable or improving sites. A strategy is proposed for evaluating probing changes in a single patient, which is based on the statistical evaluation of two attributes of the change distribution. (1) Disease progression is concluded when mean probing loss increases over time, and (2) a clinically relevant asymmetry is concluded when the distribution tail corresponding to loss is skewed. Computerized simulation was used to determine alpha-error for tests of mean and skew, for three different distributions of probing change. Actual alpha-error was shown to be near nominal levels. Power was estimated as a function of the number and magnitude of sites with probing loss and as a function of whether there was change in both mean and skew or in skew alone. Under most conditions studied, simultaneous tests for skew and mean provided enhanced power relative to a test for loss alone and would appear to offer the clinician an aditional statistical context for appraising disease status. RP COHEN, ME (reprint author), USN,DENT RES INST,BLDG 1-H,2701 SHERIDAN RD,GREAT LAKES,IL 60088, USA. NR 8 TC 4 Z9 4 U1 0 U2 1 PU MUNKSGAARD INT PUBL LTD PI COPENHAGEN PA 35 NORRE SOGADE, PO BOX 2148, DK-1016 COPENHAGEN, DENMARK SN 0022-3484 J9 J PERIODONTAL RES JI J. Periodont. Res. PD MAR PY 1995 VL 30 IS 2 BP 81 EP 87 DI 10.1111/j.1600-0765.1995.tb01256.x PG 7 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA QR920 UT WOS:A1995QR92000001 PM 7776157 ER PT J AU COHEN, ME AF COHEN, ME TI UNTITLED SO JOURNAL OF PERIODONTAL RESEARCH LA English DT Letter ID PERIODONTAL-DISEASE; MODEL RP COHEN, ME (reprint author), USN,DENT RES INST,BLDG 1-H,2701 SHERIDAN RD,GREAT LAKES,IL 60088, USA. NR 9 TC 0 Z9 0 U1 0 U2 0 PU MUNKSGAARD INT PUBL LTD PI COPENHAGEN PA 35 NORRE SOGADE, PO BOX 2148, DK-1016 COPENHAGEN, DENMARK SN 0022-3484 J9 J PERIODONTAL RES JI J. Periodont. Res. PD MAR PY 1995 VL 30 IS 2 BP 147 EP 148 DI 10.1111/j.1600-0765.1995.tb01265.x PG 2 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA QR920 UT WOS:A1995QR92000011 ER PT J AU BAK, J VENKATESWARAN, U MAK, CL SOORYAKUMAR, R JONKER, BT AF BAK, J VENKATESWARAN, U MAK, CL SOORYAKUMAR, R JONKER, BT TI PRESSURE-DEPENDENCE OF THE FANO ASYMMETRY OF OPTICAL PHONONS IN ZN1-XCOXSE AND ZN1-XFEXSE SO JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS LA English DT Article; Proceedings Paper CT 6th International Conference on High Pressure Semiconductor Physics (HPSP VI) CY AUG 21-24, 1994 CL UNIV BRITISH COLUMBIA, VANCOUVER, CANADA SP UNIV BRIT COLUMBIA, DEPT PHYS, HARVARD UNIV, DEPT PHYS, SUNY BUFFALO, DEPT PHYS, HIGH PRESSURE DIAMOND OPT INC, TUCSON, DRUKKER INT BV, PRINCETON INSTRUMENTS INC HO UNIV BRITISH COLUMBIA DE SEMICONDUCTORS; HIGH PRESSURE; RAMAN SPECTROSCOPY; PHONONS AB Effects of hydrostatic pressure on the optical phonons in ZnSe doped with Co and Fe at 10 K and up to 5 GPa are presented. Raman spectra from Zn1-xCoxSe (x = 1.6%) show the LO phonon developing an asymmetry with increasing pressure while the asymmetry already present at 1 bar in the x = 7.4% sample increases slightly with pressure. The optical phonon in Zn1-xFexSe (x = 8.8%) shows no modifications to its line profile for all pressures. These results are discussed in terms of a coupling between the phonons and a Raman continuum that is thought to arise through a pressure tunable pd hybridization of the low lying crystal field levels and the valence band. C1 OAKLAND UNIV,DEPT PHYS,ROCHESTER,MI 48309. USN,RES LAB,WASHINGTON,DC 20375. RP BAK, J (reprint author), OHIO STATE UNIV,DEPT PHYS,COLUMBUS,OH 43210, USA. RI Mak, Chee Leung/D-4906-2016 OI Mak, Chee Leung/0000-0002-2992-7884 NR 8 TC 7 Z9 7 U1 0 U2 2 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 MAR-APR PY 1995 VL 56 IS 3-4 BP 563 EP 566 DI 10.1016/0022-3697(94)00241-X PG 4 WC Chemistry, Multidisciplinary; Physics, Condensed Matter SC Chemistry; Physics GA QQ625 UT WOS:A1995QQ62500050 ER PT J AU SCANLON, JF MORAN, PJ KRUGER, J AF SCANLON, JF MORAN, PJ KRUGER, J TI EFFECTS OF WATER ADDITIONS ON THE PASSIVITY OF IRON IN DIMETHOXYETHANE SOLUTIONS SO JOURNAL OF POWER SOURCES LA English DT Article; Proceedings Paper CT 7th International Meeting on Lithium Batteries CY MAY 15-20, 1994 CL BOSTON, MA DE IRON PASSIVITY; WATER; DIMETHOXYETHANE SOLUTIONS ID ANHYDROUS PROPYLENE CARBONATE; STEEL; ELECTROPOLYMERIZATION AB The effects of trace water additions on the passive behavior of iron in an otherwise anhydrous dimethoxyethane/0.5 M LiAsF6 solution have been studied by electrochemical and surface analytical techniques. The results indicate that the passivity observed in the anhydrous solvent is maintained when small (less than 2000 ppm) concentrations of water are present as a contaminant. Passive current densities increase slightly, but water does not cause any catastrophic interference with the various passivation mechanisms. Water, when present at these levels, actually helps to extend the passive range of iron by several hundred millivolts in this system. This behavior is the result of a complex interplay between iron dissolution and solvent electropolymerization at increasingly anodic potentials. Water is believed to be the component responsible for the localized acidification of areas of active dissolution, which then results in optimal conditions for polymer film formation. This behavior is peculiar to the system of iron in dimethoxyethane/LiAsF6. C1 USN ACAD,DEPT MECH ENGN,ANNAPOLIS,MD 21402. JOHNS HOPKINS UNIV,DEPT MAT SCI & ENGN,BALTIMORE,MD 21218. RP SCANLON, JF (reprint author), ROCHESTER INST TECHNOL,DEPT MICROELECTR ENGN,ROCHESTER,NY 14623, USA. NR 15 TC 7 Z9 7 U1 0 U2 0 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0378-7753 J9 J POWER SOURCES JI J. Power Sources PD MAR PY 1995 VL 54 IS 1 BP 85 EP 91 DI 10.1016/0378-7753(94)02045-5 PG 7 WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science GA QV720 UT WOS:A1995QV72000017 ER PT J AU WILSON, KJ GUTMARK, E SCHADOW, KC SMITH, RA AF WILSON, KJ GUTMARK, E SCHADOW, KC SMITH, RA TI FEEDBACK-CONTROL OF A DUMP COMBUSTOR WITH FUEL MODULATION SO JOURNAL OF PROPULSION AND POWER LA English DT Article ID ACTIVE CONTROL; INSTABILITIES; OSCILLATIONS; EXCITATION; JETS AB Closed-loop control tests were performed to suppress the combustion instability of a 0.7-MW dump combustor and to extend its flammability limits. The pressure oscillations originating from the unstable combustion were measured at the dump plane and at the exhaust nozzle. The signals were used as a reference to lock on and to produce an acoustic signal that modulated the fuel flow at a predetermined phase shift relative to them. At a certain range of phase shift angles, the amplitude of the combustion oscillations was reduced to 50% of its unforced level. The control system was most effective when the reference signal was picked up at the dump. The amount of reduction was proportional to the acoustic forcing level, but leveled off for high forcing amplitudes. The effectiveness of the control system was reduced as the mass flow rate of the air was increased. The combustion instability became himodal with multiple unstable frequencies, and a more sophisticated lock-on and phase-shift system is required to suppress effectively oscillations with more than a single dominant frequency. However, even for the high flow rates, the amplitude of the instability was reduced by nearly 40%. RP WILSON, KJ (reprint author), USN,CTR AIR WARFARE,RES DEPT,DIV WEAPONS,CHINA LAKE,CA 93555, USA. OI Gutmark, Ephraim/0000-0001-7816-4257 NR 20 TC 6 Z9 6 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0748-4658 J9 J PROPUL POWER JI J. Propul. Power PD MAR-APR PY 1995 VL 11 IS 2 BP 268 EP 274 DI 10.2514/3.51420 PG 7 WC Engineering, Aerospace SC Engineering GA QM084 UT WOS:A1995QM08400011 ER PT J AU CLARK, RW DAVIS, J APRUZESE, JP GIULIANI, JL AF CLARK, RW DAVIS, J APRUZESE, JP GIULIANI, JL TI A PROBABILISTIC MODEL FOR CONTINUUM TRANSPORT IN DENSE, OPTICALLY THICK PLASMAS SO JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER LA English DT Article ID PHOTON-ESCAPE PROBABILITIES; LINE FORMATION; APPROXIMATION; EQUATION; OPACITY AB Probability-of-escape concepts have previously been successfully employed for cell-to-cell transport of spectral lines in dense, optically thick media. In this paper, the same conceptual framework is extended to the transport of continuum radiation emitted in radiative recombination and to the transport of line radiation in the presence of an optically thick continuum. Specific comparisons with calculations using multifrequency probability-of-escape transport demonstrate the accuracy of the model. RP CLARK, RW (reprint author), USN,RES LAB,DIV PLASMA PHYS,RADIAT HYDRODYNAM BRANCH,WASHINGTON,DC 20375, USA. NR 18 TC 22 Z9 22 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 MAR PY 1995 VL 53 IS 3 BP 307 EP 320 DI 10.1016/0022-4073(95)90062-4 PG 14 WC Optics; Spectroscopy SC Optics; Spectroscopy GA QW823 UT WOS:A1995QW82300006 ER PT J AU HENDRIX, D NOBLESSE, F AF HENDRIX, D NOBLESSE, F TI EFFECT OF HULL DISCRETIZATION ON STEADY FREE-SURFACE FLOW CALCULATIONS SO JOURNAL OF SHIP RESEARCH LA English DT Article AB Steady free-surface potential flow about a mathematically defined hull form is considered. The flow is defined using the slender-ship approximation. The hull form is approximated by means of flat triangular panels within which the source strength is piecewise constant. Convergence of the computed velocity potential, wave profile, and lift, moment and drag with respect to hull discretization (size and aspect ratio of panels) is evaluated. RP HENDRIX, D (reprint author), NSWC,CARDEROCK DIV,BETHESDA,MD, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SOC NAVAL ARCH MARINE ENG PI JERSEY CITY PA 601 PAVONIA AVENUE, JERSEY CITY, NJ 07306 SN 0022-4502 J9 J SHIP RES JI J. Ship Res. PD MAR PY 1995 VL 39 IS 1 BP 42 EP 52 PG 11 WC Engineering, Marine; Engineering, Civil SC Engineering GA QN509 UT WOS:A1995QN50900003 ER PT J AU HUGHES, DH GAUMOND, CF DRAGONETTE, LR HOUSTON, BH AF HUGHES, DH GAUMOND, CF DRAGONETTE, LR HOUSTON, BH TI SYNTHESIZED WAVE-PACKET BASIS FOR MONOSTATIC SCATTERING FROM A RANDOMLY RIBBED, FINITE CYLINDRICAL-SHELL SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA LA English DT Article ID ACOUSTIC SCATTERING; WIGNER DISTRIBUTION; RESONANCE RP HUGHES, DH (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 25 TC 3 Z9 3 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 MAR PY 1995 VL 97 IS 3 BP 1399 EP 1408 DI 10.1121/1.412082 PG 10 WC Acoustics; Audiology & Speech-Language Pathology SC Acoustics; Audiology & Speech-Language Pathology GA QL236 UT WOS:A1995QL23600004 ER PT J AU PHOTIADIS, DM AF PHOTIADIS, DM TI TRANSPORT OF ENERGY ACROSS A DISCONTINUITY BY FLUID LOADING SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA LA English DT Article ID PROPAGATION; VIBRATION; PLATE; WAVES RP PHOTIADIS, DM (reprint author), USN,RES LAB,CODE 7131,WASHINGTON,DC 20375, USA. NR 16 TC 5 Z9 5 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0001-4966 J9 J ACOUST SOC AM JI J. Acoust. Soc. Am. PD MAR PY 1995 VL 97 IS 3 BP 1409 EP 1414 DI 10.1121/1.413094 PG 6 WC Acoustics; Audiology & Speech-Language Pathology SC Acoustics; Audiology & Speech-Language Pathology GA QL236 UT WOS:A1995QL23600005 ER PT J AU GAUMOND, CF YODER, T AF GAUMOND, CF YODER, T TI DETERMINATION OF STRUCTURAL IMPEDANCE FROM SCATTERING DATA SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA LA English DT Article ID FLUID C1 SFA INC,LANDOVER,MD 20745. RP GAUMOND, CF (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 8 TC 3 Z9 3 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0001-4966 J9 J ACOUST SOC AM JI J. Acoust. Soc. Am. PD MAR PY 1995 VL 97 IS 3 BP 1415 EP 1422 DI 10.1121/1.412083 PG 8 WC Acoustics; Audiology & Speech-Language Pathology SC Acoustics; Audiology & Speech-Language Pathology GA QL236 UT WOS:A1995QL23600006 ER PT J AU MAIDANIK, G DICKEY, J AF MAIDANIK, G DICKEY, J TI AN IMPULSE-RESPONSE FUNCTION FOR A FUZZY STRUCTURE SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA LA English DT Article ID RIBBED PANELS RP MAIDANIK, G (reprint author), USN,CTR SURFACE WARFARE,CARDEROCK DIV,BETHESDA,MD 20084, USA. NR 20 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 MAR PY 1995 VL 97 IS 3 BP 1460 EP 1476 DI 10.1121/1.412086 PG 17 WC Acoustics; Audiology & Speech-Language Pathology SC Acoustics; Audiology & Speech-Language Pathology GA QL236 UT WOS:A1995QL23600010 ER PT J AU WILD, M JOYCE, R AF WILD, M JOYCE, R TI MODELING THE SPATIAL AND FREQUENCY-DISTRIBUTION OF NARROW-BAND ACOUSTIC-SIGNALS SCATTERING FROM THE OCEAN SURFACE SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA LA English DT Article ID SPECTRUM; WAVES RP WILD, M (reprint author), USN,OFF OCEANOG,BAY ST LOUIS,MS 39522, USA. NR 14 TC 1 Z9 1 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0001-4966 J9 J ACOUST SOC AM JI J. Acoust. Soc. Am. PD MAR PY 1995 VL 97 IS 3 BP 1559 EP 1565 DI 10.1121/1.412095 PG 7 WC Acoustics; Audiology & Speech-Language Pathology SC Acoustics; Audiology & Speech-Language Pathology GA QL236 UT WOS:A1995QL23600020 ER PT J AU COLLINS, MD MCDONALD, BE HEANEY, KD KUPERMAN, WA AF COLLINS, MD MCDONALD, BE HEANEY, KD KUPERMAN, WA TI 3-DIMENSIONAL EFFECTS IN GLOBAL ACOUSTICS SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA LA English DT Article ID PARABOLIC-EQUATION METHOD; TIME-DOMAIN SOLUTION; PROPAGATION; MODEL; OCEAN; SOFAR C1 UNIV CALIF SAN DIEGO,SCRIPPS INST OCEANOG,LA JOLLA,CA 92093. RP COLLINS, MD (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 21 TC 19 Z9 19 U1 2 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 MAR PY 1995 VL 97 IS 3 BP 1567 EP 1575 DI 10.1121/1.413050 PG 9 WC Acoustics; Audiology & Speech-Language Pathology SC Acoustics; Audiology & Speech-Language Pathology GA QL236 UT WOS:A1995QL23600021 ER PT J AU NYSTUEN, JA MEDWIN, H AF NYSTUEN, JA MEDWIN, H TI UNDERWATER SOUND PRODUCED BY RAINFALL - SECONDARY SPLASHES OF AEROSOLS SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA LA English DT Article ID NOISE; RAINDROPS C1 USN,POSTGRAD SCH,DEPT PHYS,MONTEREY,CA 93943. RP NYSTUEN, JA (reprint author), UNIV MIAMI,ROSENSTIEL SCH MARINE & ATMOSPHER SCI,COOPERAT INST MARINE & ATMOSPHER STUDIES,MIAMI,FL 33149, USA. NR 17 TC 17 Z9 17 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 MAR PY 1995 VL 97 IS 3 BP 1606 EP 1613 DI 10.1121/1.412099 PG 8 WC Acoustics; Audiology & Speech-Language Pathology SC Acoustics; Audiology & Speech-Language Pathology GA QL236 UT WOS:A1995QL23600025 ER PT J AU LAGAKOS, N BUCARO, JA AF LAGAKOS, N BUCARO, JA TI PLANAR FIBER OPTIC ACOUSTIC VELOCITY SENSOR SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA LA English DT Article ID SENSITIVITY RP LAGAKOS, N (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 9 TC 2 Z9 2 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0001-4966 J9 J ACOUST SOC AM JI J. Acoust. Soc. Am. PD MAR PY 1995 VL 97 IS 3 BP 1660 EP 1663 DI 10.1121/1.412042 PG 4 WC Acoustics; Audiology & Speech-Language Pathology SC Acoustics; Audiology & Speech-Language Pathology GA QL236 UT WOS:A1995QL23600031 ER PT J AU PIQUETTE, JC AF PIQUETTE, JC TI ANALYTICAL BACKPLATE REMOVAL IN PANEL TESTS - AN EXPERIMENTAL DEMONSTRATION SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA LA English DT Letter ID TRANSDUCER TRANSIENT SUPPRESSION; UNDERWATER ACOUSTIC PANELS; COEFFICIENT MEASUREMENT; ONION METHOD RP PIQUETTE, JC (reprint author), USN,RES LAB,UNDERWATER SOUND REFERENCE DETACHMENT,POB 568337,ORLANDO,FL 32856, USA. NR 7 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 MAR PY 1995 VL 97 IS 3 BP 1978 EP 1979 DI 10.1121/1.413049 PG 2 WC Acoustics; Audiology & Speech-Language Pathology SC Acoustics; Audiology & Speech-Language Pathology GA QL236 UT WOS:A1995QL23600067 ER PT J AU GLENDENING, JW DOYLE, JD AF GLENDENING, JW DOYLE, JD TI MESOSCALE RESPONSE TO A MEANDERING SURFACE-TEMPERATURE INTERFACE SO JOURNAL OF THE ATMOSPHERIC SCIENCES LA English DT Article AB Mesoscale variation of the boundary-layer (BL) front produced by a surface temperature interface depends upon the scale of meander along that interface. For a relatively large-scale meander, the circulations are quasi two-dimensional relative to the local interface boundary, and a meander signature appears in the BL structure. For a relatively small-scale meander, alongfront blending eliminates organization about individual meanders to produce a quasi two-dimensional circulation and gradients oriented perpendicular to the mean front. The fundamental atmospheric scale controlling this transition is the mesoscale deformation radius, which depends upon the warm-side BL depth. With strong large-scale geostrophic forcing, however, the resulting alongfront advection length scale increases the meander size required to approach the large-scale limit. Large-scale meanders typically create two local maxima of vertical velocity, whereas small-scale meanders develop a single maximum on the warm side of the frontal zone. At intermediate scales, variations of the vertical velocity maximum are particularly complex when large-scale geostrophic winds are relatively weak. RP GLENDENING, JW (reprint author), USN,RES LAB,DIV MARINE METEOROL,CODE 7541,MONTEREY,CA 93943, USA. NR 12 TC 3 Z9 3 U1 0 U2 0 PU AMER METEOROLOGICAL SOC PI BOSTON PA 45 BEACON ST, BOSTON, MA 02108-3693 SN 0022-4928 J9 J ATMOS SCI JI J. Atmos. Sci. PD MAR 1 PY 1995 VL 52 IS 5 BP 505 EP 518 DI 10.1175/1520-0469(1995)052<0505:MRTAMS>2.0.CO;2 PG 14 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA QN298 UT WOS:A1995QN29800001 ER PT J AU HERMAN, WN HAYDEN, LM AF HERMAN, WN HAYDEN, LM TI MAKER FRINGES REVISITED - 2ND-HARMONIC GENERATION FROM BIREFRINGENT OR ABSORBING MATERIALS SO JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS LA English DT Article ID NONLINEAR-OPTICAL-PROPERTIES; POLYMERS; FILMS AB We present a new formulation of Maker fringes in parallel-surface films, using self-consistent boundary conditions for reflections and allowing for any degree of refractive-index dispersion. This treatment of the second-harmonic reflections and dispersion, unlike a number of previous derivations, leads correctly to the expected form for the effective second-harmonic d coefficients. Complete expressions with physically meaningful factors are given for the generated second-harmonic power for either absorbing or birefringent films including reflections for the case of no pump depletion. A comparison with the isotropic approximation is given, and practical considerations in the use of these expressions for the fitting of experimental data are discussed. C1 UNIV MARYLAND,DEPT PHYS,BALTIMORE,MD 21228. RP HERMAN, WN (reprint author), USN,CTR AIR WARFARE,WARMINSTER,PA 18974, USA. NR 16 TC 340 Z9 344 U1 5 U2 19 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 MAR PY 1995 VL 12 IS 3 BP 416 EP 427 DI 10.1364/JOSAB.12.000416 PG 12 WC Optics SC Optics GA QL286 UT WOS:A1995QL28600006 ER PT J AU WAX, JR SMITH, JF FLOYD, RC EGGLESTON, MK AF WAX, JR SMITH, JF FLOYD, RC EGGLESTON, MK TI PRENATAL ULTRASONOGRAPHIC FINDINGS ASSOCIATED WITH JACOBSEN-SYNDROME SO JOURNAL OF ULTRASOUND IN MEDICINE LA English DT Note RP WAX, JR (reprint author), USN,MED CTR,DEPT OBSTET & GYNECOL,DIV MATERNAL FETAL MED,PORTSMOUTH,VA 23708, USA. NR 6 TC 3 Z9 3 U1 0 U2 0 PU AMER INST ULTRASOUND MEDICINE PI LAUREL PA SUBSCRIPTION DEPT, 14750 SWEITZER LANE, STE 100, LAUREL, MD 20707-5906 SN 0278-4297 J9 J ULTRAS MED JI J. Ultrasound Med. PD MAR PY 1995 VL 14 IS 3 BP 256 EP 258 PG 3 WC Acoustics; Radiology, Nuclear Medicine & Medical Imaging SC Acoustics; Radiology, Nuclear Medicine & Medical Imaging GA QJ073 UT WOS:A1995QJ07300015 PM 7760474 ER EF